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比较T7E1和Surveyor核酸内切酶对于点突变的检测效率_图文

IT圈 admin 60浏览 0评论

2024年5月12日发(作者:聂弘文)

黄璃莘,等.莪术对局灶性脑缺血模型大鼠的神经保护作用 

学评分,莪术高、中剂量组大鼠神经行为学评分较模型对照 

组大鼠有显著的降低,说明莪术在一定程度上能缓解MCAO 

・ 887 ・ 

脑梗死和脑水肿程度、降低LDH、CK和Glu含量,其作用机 

制可能与保护缺血区脑组织、减轻脑水肿、抗氧自由基、减少 

EAA毒性有关。对于具体的脑缺血再灌注损伤保护机制有 

大鼠因脑缺血所引起的神经损伤。 

大量的文献证实E5,63,脑水肿在缺血性脑卒中的早期就 

会出现,并且会随着脑缺血时间的延长而逐渐加重,在2~4 d 

内就会达到峰值。同时脑缺血初期也会伴随着脑梗死,其主 

待进一步研究。 

参考文献: 

Pendlebury ST,Rothwell PM.Prevalence,incidence 

andfactors associated with pre—.stroke and post—,stroke 

要的发病机制是脑部供血不足甚至血流中断,引起神经细胞 

的损伤。本研究结果表明,与模型对照组相比,莪术能减少 

MCAO大鼠大脑脑梗死体积百分比和脑含水量,即可减轻脑 

水肿和脑梗死程度,提示莪术对MCAO模型大鼠具有一定 

dementia:a systematic review and meta—analysis[J]. 

Lancet Neurol,2009,8:1006—1018. 

的保护作用。 

Nilsson等l7 发现,LDH是标志脑组织损害最敏感的酶, 

高浓度乳酸与严重脑缺血有很好的相关性,故检测LDH含 

量不失为一种方法简单、又可初步判断病情和脑梗死面积及 

预后的参考方法。有文献报道_8],当机体发生缺血性脑卒中 

时,脑神经细胞由于长时间缺血缺氧而遭到破坏释放出大量 

口 

 一] ] ] 

张均田.现代药理试验方法[M].北京:北京医科大学、 

中国协和医科大学联合出版社,1997:1241. 

Zea Longa EL,Weinstein PR,Carlson S,et a1.Reversi— 

ble middle cerebral artery occlusion without craniecto— 

my in rats[J].Stroke,1989,20:81—84. 

Fisher M,Feuerstein G,Howells DW,et a1.Update of 

] ] ] ] 

的CK,CK透过血脑屏障而进入血液,因此CK可以作为缺 

血性脑卒中的特异性诊断指标。兴奋性氨基酸(EAA)主要 

the stroke therapy academic industry roundtable pre— 

clinical recommendations[J ̄.Stroke,2009,40(6):2244— 

225O. 

为天冬氨酸(Asp)和Glu,是机体内含量较高的一种氨基酸, 

尤其在脑内的含量较高,是机体中枢神经系统中主要的兴奋 

性递质。正常情况下,机体内存在着少量的EAA,维持着机 

体的兴奋性;一旦细胞外的EAA浓度过高,将会导致神经元 

的损伤,引起脑组织的病理损害。本研究发现,大鼠MCAO 

李燕华,张国威.影响缺血性脑水肿产生的相关因素 

EJ].中国急救医学,2006,26(11):846—848. 

李 强,陆兵勋.脑水肿的治疗研究进展I-J].实用医药 

杂志,2OO5,22(1):79 81. 

Nilsson OG,Brandt L,Ungerstedt U,et a1.Bedside de— 

后,血清中LDH、CK和Glu水平升高,其升高水平与脑组织 

损伤程度基本一致,这与以往研究报道一致。莪术在一定剂 

量下能有效地降低MCAO大鼠血清中LDH、CK和Glu含 

量,进一步表明莪术对于MCAO模型大鼠有一定的保护作 

用。 

tection of brain ischemia using intracerebral microdialy— 

sis subarachnoid hemorrhage and delayed ischemic dete— 

rioration[1].Neurosurgery,1999,(5):1176—1185. 

方芒,王婉灵,余术宜,等.后适应对大鼠实验性局灶 

性脑缺血、再灌注损伤的保护作用[J].中国药理学通 

报,2007,23(4):476-479. 

综合上述研究结果表明,莪术对MCAO模型大鼠具有 

定的神经保护作用,表现在其能改善神经行为损伤、减轻 

2015 Dec;32(6) 广西医科大学学报

比较T7E1和Surveyor核酸内切酶对于点突变的检测效率 

兰博谢秋巧 明建军黄仁彬张士军△ 

(广西医科大学药学院药理学教研室南宁 530021) 

摘要 目的:比较T7E1和Surveyor核酸内切酶对于CRISPR Cas9引起的点突变的错配剪切活性。方法:利用野生型和点突 

变的基因组DNA为模板,PCR扩增出突变位置的基因片段,用不同比例的野生型和点突变的PCR产物进行DNA杂交,分别 

用T7E1和Surveyor核酸内切酶对杂交后的产物进行切割,琼脂糖凝胶电泳分析结果。结果:当5 点突变DNA与95 野生 

型DNA杂交时,T7E1核酸内切酶剪切杂交产物的比例为9.5 ,Surveyor核酸内切酶为3.2 ;当点突变DNA与野生型 

DNA等比例杂交时,T7E1核酸内切酶剪切杂交产物的比例为45.6%,Surveyor核酸内切酶为26.4 ;且T7E1和Surveyor 

核酸内切酶均能检测5 的突变DNA。结论:T7E1核酸内切 

*基金项目:2011年度留学人员科技活动择优资助项目 

(No.人社厅函[2011]508号) 

△通信作者,E—mail:gxykdxzsl@163.corn 

收稿日期:2015—07—30 

酶检测点突变的效率高于Surveyor。 

关键词TTE1;Surveyor;点突变;杂交;错配剪切活性 

文献标志码:A 文章编号: 中图分类号:R一33 

1005—930X(2015)06—0887—04 

・ 

888 ・ 广西医科大学学报2015 Dec;32(6) 

CoMPARISoN BETWEEN PoINT MUTATIoN DETECTIoN EFFICIENCY oF T7E1 AND 

SURVEYoR ENDONUCLEASE 

Lan Bo,Xie Qiuqiao,Ming Jianjun,Huang Renbin,Zhang Shijun.(School of Pharmacy,Guangxi Medical 

University,Nanning 53002 1,China) 

Abstract Objective:To detect point mutations triggered by engineered nucleases by comparing T7E1 and 

Surveyor mismatch cleavage assays.Methods:Used wide type and point mutation genomic DNA as tem— 

plate,we amplified 500 bp length DNA fragment of angiomotin gene.After incubating wide type PCR 

product with point mutation PCR product at a series of different ratios,the hybridized DNA were digested 

by T7EI and Surveyor endonucleases. Enzyme efficiencies were evaluated by calculating the ratios of cut 

band intensities to overall band intensities on agarose ge1.Results:When 5 

and 95 wide type PCR product were hybridized,9.5 

point mutation PCR product 

hybridization product were cut by T7E1 endonu 

clease,and 3.2 hybridization product were cut by Surveyor endonuclease.When point mutation PCR 

product and wide type PCR product were hybridized at the same ratio,45.6 

cut by T7E1 endonucleasse,26.4 

hybridization product were 

hybridization product were cut by surveyor endonuclease.Both T7E1 

mutant DNA.Conclusion:T7E1 endonuclease is more sensitive and Surveyor endonuclease can detect 5 

than Surveyor in detecting point mutation in our assays. 

Key words T7E1;Surveyor;point mutation;hybridization;mismatch cleavage assay 

基因编辑在近十几年成为一项新兴且热门的技术, 

GTTTCCCCTTCCCAGGTC 3 (Sigma),(一)5 GACGTC 

ZFNs,TAI ENS,CRISPR Cas9技术都是利用核酸酶特异性 

切割目的基因序列l 。被切开的DNA序列引发基因的损伤 

( CTCGGTTCTCATC一3’(Sigma),琼脂糖凝胶(SeaKem,批 

号:50004),10×TBE,pH一8.3(Vivantis Technologies,批 

号:PB1040 1I ),1 KB DNA ladder(Promega,批号:G5711), 

核酸染料(RedSafe INtROM Biotechnology,批号:21 141), 

修复机制,非同源修复多为碱基的丢失、插入,同源修复需要 

特定的DNA模版,最终导敛基因突变[。 ]。随着基因编辑技 

术的发展,快速、高效、经济的检测突变的方法显得尤为重 

要,传统的基凶测序技术昂贵且费时,往往不能满足高通量 

检测突变的需求。近期发现的高分辨率熔融曲线被证实可 

以检测突变【 ,但是这种方法对于小片段PCR产物需要有 

特殊的定量方法 。另一种检测突变的有效方法是利用突 

DNA测序仪(Applied Biosystems,3130xl Genetic Analyzer), 

PCR仪(TProfessional Thermocycler Biometra),电泳槽 

(BIO RAD PowerPac Basic),微量离心机(CAPSUI EF— 

UGE TOMY PMC 860),紫外影像仪(ChemiDoc Touch 

Gel Imaging System 1708370 BI()RAD),分光光度计(Nano 

DropTM 2000 Spectrophotometers Thermo Scientific),恒温水 

变的DNA序列与未突变的DNA序列进行杂交使其形成异 

源双链,特异件核酸内切酶能够检测并切开错配的DNA序 

浴锅(PolyScience WB20A11B)。 

列 。常用的检测基因突变的特异型核酸内切酶为T7EI 

1.2 PCR突变基因片段:分别用野生型和点突变型的大鼠 

基因组DNA,PCR扩增出突变位置的基因片段。PCR反应 

体系:Nuclease—Free H 2 O 1 2.4“I ;5×Phusion HF Reaction 

Buffer 4“L;dNTP(2 mmol/L)0.4“L;Primer(+) 

和Surveyor。TTE1核酸内切酶能够识别并切割不完全配对 

DNA、十字型结构DNA、Holliday结构或交叉DNA、异源双 

链DNA或者以更慢的速度切割双链DNA。Surveyor核酸 

内切酶是CEI I错配特异性核酸酶中的一种。CELI是从芹 

菜中分离出来的一种单链特异性核酸酶,能准确切割异源双 

链DNA错配位点。本文的主要目的在于比较T7E1和Sur— 

veyor核酸内切酶对于由CRISPR~Cas9引发的点突变的检测 

活性的区别。 

(10/,mol/I )1 I ;Primer( )(10 tLmol/L)1 L;Template 

(100 ng/t*L)1 L;Phusion polymerase 0.2 L。PCR反应 

条件:98℃,30 s;98℃,10 8;64℃,3O s;72℃,15 s;72℃, 

5 min;4℃, ;35 cycles。 

1.3 DNA杂交:PCR反应结束后,琼脂糖凝胶电泳确认有 

条带后,PCR试剂盒纯化,对未突变和点突变的PCR产物分 

1材料和方法 

1.1 主要试剂和仪器:T7E1(New England Biolabs,批号: 

MO3O2S),Surveyor(Integrated DNA Technologies,批号: 

别进行定量并调至同一浓度。分别用0 Mut(10“L wT)、 

5 Mut(0.5/,L Mut+9.5 L wT)、10 (1 L Mut+9“L 

WT)、20 Mut(2 L Mut+8 L WT)、30 Mut(3 L Mut 

Mut 

706025),PCR纯化试剂盒(QIAGEN,批号:28106),Nucle— 

ase—Free Water(Promega,批号:P1193),5×Phusion HF Re 

action Buffer(Thermo Scientific,批号:F 538L),dNTP(Ap— 

plied Biosystems,批号:N8080261),phusion DNA polymerase 

(Thermo Scientific,批号:F一530L),Primer:(4-)5’一CT— 

+7 L WT)、40 Mut(4 I Mut+6 L WT)、50 

(5 L Mut+5 L WT)、60 

7O 

Mut(6 L Mut+4“L WT)、 

Mut(8 uL Mut+ 

Mut 

Mut(7 L Mut+3“L wT)、80 

2 L wT)、90 Mut(9/,L Mut+l L wT)、95 

(9.5 L Mut+0.5 L WT)、100 Mut(10 L Mut)进行 

・ 

890 ・ 广西医科大学学报2015 Dec;32(6) 

60 

5O 

,、

40 

3O 

¥ 

善20 

10 

0 

0 10 20 30 40 50 60 70 80 90 100 

突变DNA的百分量(%) 

图3 T7E1和Surveyor酶切效率的定量分析 

genetic editing tool kit:ZFNs,TALENs,and CRISPR— 

3 讨 论 

在DNA测序之前,任何的分子生物学实验室可以利用 

文中设计方法检测突变DNA,从基因组DNA到检测是否发 

生基因突变的整个过程仅需一天,大大的节省了时间及开 

支,是高通量检测基因突变的绝佳方法。研究结果表明, 

Cas9[J].The Journal of Clinical Investigation,2014, 

124(1O):4154—4161. 

Ga J。Gersbach CA,Barbas CF.ZFN,TALEN,and 

CRISPR/Cas based methods for genome engineering 

[J].Trends Biotechnol,2013,31(7):397—405. 

L。J 

Terns RM,Terns MP.CRISPR based technologies: 

T7E1和Surveyor核酸内切酶均具备检测点突变的能力,且 

均能检测5 的突变DNA,可见核酸内切酶检测基因突变的 

prokaryotic defense weapons repurposed[J].Trends 

Genet,2014,30(3):111 118. 

灵敏度很高,在突变型和野生型DNA等比例混合杂交时,酶 

切效率达到最高,且在检测点突变的效率上,T7E1核酸内切 

酶的效率要高于Surveyor,其检测突变的机制有待进一步研 

究。 

L J 

Sutter AG,Palanisamy AP,Kurtz N,et a1.Efficient 

method of genotyping ob/ob mice using high resolution 

melting analysis[J].PI oS One,2013,8(11):e78840. 

L0 J 

Dahlem TJ,Hoshijima K,Jurynec MJ,et a1.Simple 

methods for generating and detecting locus——specific mu—— 

tations induced with TALENs in the zebrafish genome 

核酸内切酶错配剪切法检测突变基因也存在一个关键 

的控制因素,就是PCR扩增模版DNA的过程,如果DNA聚 

合酶的保真度有限,那么扩增出来的DNA片段就可能引入 

突变,特别是对于PCR扩增末端的循环,会导致重组PCR产 

物的形成 ],从而导致后续的实验结果受到影响,对于该问 L0 

[J].PLoS Genet,2012,8(8):el002861. 

Vouillot L,Thflie A,Pollet N.Comparison of T7E1 and 

surveyor mismatch cleavage assays to detect mutations 

题的解决方案是必须使用高保真度的DNA聚合酶来扩增 

DNA片段,保证扩增片段的特异性,减少因DNA聚合酶嵌 

合错误导致出现的无关背景。 

triggered by engineered nucleases[J].G3(Bethesda), 

2015,5(3):407—415. 

对于该实验,本课题组只比较两种常用的检测突变的核 L,_ 

Qiu P,Shandilya H,13"Alessio J M,et a1.Mutation detec 

酸内切酶对于点突变基因检测活性的区别,后续的验证性实 

验应在片段丢失以及随机插入缺失突变基因中得到全面的 

tion using Surveyor nuclease[J].Biotechniques,2004, 

36(4):702—707. 

验证,探索两种核酸内切酶对于不同类型突变的检测原理及 L J 

Judo MS,Wede1 AB,Wils。n C.Stimulation and sup 

效率分析,完善核酸内切酶检测基因突变的方法,为高通量 

检测基因突变技术提供理论依据。 

pression of PCR—mediated recombination[J].Nucleic 

Acids Res,1998,26(7):1819—1825. 

参考文献: 

[1] Raj at M.Gupta and Kiran Musunuru.Expanding the 

2024年5月12日发(作者:聂弘文)

黄璃莘,等.莪术对局灶性脑缺血模型大鼠的神经保护作用 

学评分,莪术高、中剂量组大鼠神经行为学评分较模型对照 

组大鼠有显著的降低,说明莪术在一定程度上能缓解MCAO 

・ 887 ・ 

脑梗死和脑水肿程度、降低LDH、CK和Glu含量,其作用机 

制可能与保护缺血区脑组织、减轻脑水肿、抗氧自由基、减少 

EAA毒性有关。对于具体的脑缺血再灌注损伤保护机制有 

大鼠因脑缺血所引起的神经损伤。 

大量的文献证实E5,63,脑水肿在缺血性脑卒中的早期就 

会出现,并且会随着脑缺血时间的延长而逐渐加重,在2~4 d 

内就会达到峰值。同时脑缺血初期也会伴随着脑梗死,其主 

待进一步研究。 

参考文献: 

Pendlebury ST,Rothwell PM.Prevalence,incidence 

andfactors associated with pre—.stroke and post—,stroke 

要的发病机制是脑部供血不足甚至血流中断,引起神经细胞 

的损伤。本研究结果表明,与模型对照组相比,莪术能减少 

MCAO大鼠大脑脑梗死体积百分比和脑含水量,即可减轻脑 

水肿和脑梗死程度,提示莪术对MCAO模型大鼠具有一定 

dementia:a systematic review and meta—analysis[J]. 

Lancet Neurol,2009,8:1006—1018. 

的保护作用。 

Nilsson等l7 发现,LDH是标志脑组织损害最敏感的酶, 

高浓度乳酸与严重脑缺血有很好的相关性,故检测LDH含 

量不失为一种方法简单、又可初步判断病情和脑梗死面积及 

预后的参考方法。有文献报道_8],当机体发生缺血性脑卒中 

时,脑神经细胞由于长时间缺血缺氧而遭到破坏释放出大量 

口 

 一] ] ] 

张均田.现代药理试验方法[M].北京:北京医科大学、 

中国协和医科大学联合出版社,1997:1241. 

Zea Longa EL,Weinstein PR,Carlson S,et a1.Reversi— 

ble middle cerebral artery occlusion without craniecto— 

my in rats[J].Stroke,1989,20:81—84. 

Fisher M,Feuerstein G,Howells DW,et a1.Update of 

] ] ] ] 

的CK,CK透过血脑屏障而进入血液,因此CK可以作为缺 

血性脑卒中的特异性诊断指标。兴奋性氨基酸(EAA)主要 

the stroke therapy academic industry roundtable pre— 

clinical recommendations[J ̄.Stroke,2009,40(6):2244— 

225O. 

为天冬氨酸(Asp)和Glu,是机体内含量较高的一种氨基酸, 

尤其在脑内的含量较高,是机体中枢神经系统中主要的兴奋 

性递质。正常情况下,机体内存在着少量的EAA,维持着机 

体的兴奋性;一旦细胞外的EAA浓度过高,将会导致神经元 

的损伤,引起脑组织的病理损害。本研究发现,大鼠MCAO 

李燕华,张国威.影响缺血性脑水肿产生的相关因素 

EJ].中国急救医学,2006,26(11):846—848. 

李 强,陆兵勋.脑水肿的治疗研究进展I-J].实用医药 

杂志,2OO5,22(1):79 81. 

Nilsson OG,Brandt L,Ungerstedt U,et a1.Bedside de— 

后,血清中LDH、CK和Glu水平升高,其升高水平与脑组织 

损伤程度基本一致,这与以往研究报道一致。莪术在一定剂 

量下能有效地降低MCAO大鼠血清中LDH、CK和Glu含 

量,进一步表明莪术对于MCAO模型大鼠有一定的保护作 

用。 

tection of brain ischemia using intracerebral microdialy— 

sis subarachnoid hemorrhage and delayed ischemic dete— 

rioration[1].Neurosurgery,1999,(5):1176—1185. 

方芒,王婉灵,余术宜,等.后适应对大鼠实验性局灶 

性脑缺血、再灌注损伤的保护作用[J].中国药理学通 

报,2007,23(4):476-479. 

综合上述研究结果表明,莪术对MCAO模型大鼠具有 

定的神经保护作用,表现在其能改善神经行为损伤、减轻 

2015 Dec;32(6) 广西医科大学学报

比较T7E1和Surveyor核酸内切酶对于点突变的检测效率 

兰博谢秋巧 明建军黄仁彬张士军△ 

(广西医科大学药学院药理学教研室南宁 530021) 

摘要 目的:比较T7E1和Surveyor核酸内切酶对于CRISPR Cas9引起的点突变的错配剪切活性。方法:利用野生型和点突 

变的基因组DNA为模板,PCR扩增出突变位置的基因片段,用不同比例的野生型和点突变的PCR产物进行DNA杂交,分别 

用T7E1和Surveyor核酸内切酶对杂交后的产物进行切割,琼脂糖凝胶电泳分析结果。结果:当5 点突变DNA与95 野生 

型DNA杂交时,T7E1核酸内切酶剪切杂交产物的比例为9.5 ,Surveyor核酸内切酶为3.2 ;当点突变DNA与野生型 

DNA等比例杂交时,T7E1核酸内切酶剪切杂交产物的比例为45.6%,Surveyor核酸内切酶为26.4 ;且T7E1和Surveyor 

核酸内切酶均能检测5 的突变DNA。结论:T7E1核酸内切 

*基金项目:2011年度留学人员科技活动择优资助项目 

(No.人社厅函[2011]508号) 

△通信作者,E—mail:gxykdxzsl@163.corn 

收稿日期:2015—07—30 

酶检测点突变的效率高于Surveyor。 

关键词TTE1;Surveyor;点突变;杂交;错配剪切活性 

文献标志码:A 文章编号: 中图分类号:R一33 

1005—930X(2015)06—0887—04 

・ 

888 ・ 广西医科大学学报2015 Dec;32(6) 

CoMPARISoN BETWEEN PoINT MUTATIoN DETECTIoN EFFICIENCY oF T7E1 AND 

SURVEYoR ENDONUCLEASE 

Lan Bo,Xie Qiuqiao,Ming Jianjun,Huang Renbin,Zhang Shijun.(School of Pharmacy,Guangxi Medical 

University,Nanning 53002 1,China) 

Abstract Objective:To detect point mutations triggered by engineered nucleases by comparing T7E1 and 

Surveyor mismatch cleavage assays.Methods:Used wide type and point mutation genomic DNA as tem— 

plate,we amplified 500 bp length DNA fragment of angiomotin gene.After incubating wide type PCR 

product with point mutation PCR product at a series of different ratios,the hybridized DNA were digested 

by T7EI and Surveyor endonucleases. Enzyme efficiencies were evaluated by calculating the ratios of cut 

band intensities to overall band intensities on agarose ge1.Results:When 5 

and 95 wide type PCR product were hybridized,9.5 

point mutation PCR product 

hybridization product were cut by T7E1 endonu 

clease,and 3.2 hybridization product were cut by Surveyor endonuclease.When point mutation PCR 

product and wide type PCR product were hybridized at the same ratio,45.6 

cut by T7E1 endonucleasse,26.4 

hybridization product were 

hybridization product were cut by surveyor endonuclease.Both T7E1 

mutant DNA.Conclusion:T7E1 endonuclease is more sensitive and Surveyor endonuclease can detect 5 

than Surveyor in detecting point mutation in our assays. 

Key words T7E1;Surveyor;point mutation;hybridization;mismatch cleavage assay 

基因编辑在近十几年成为一项新兴且热门的技术, 

GTTTCCCCTTCCCAGGTC 3 (Sigma),(一)5 GACGTC 

ZFNs,TAI ENS,CRISPR Cas9技术都是利用核酸酶特异性 

切割目的基因序列l 。被切开的DNA序列引发基因的损伤 

( CTCGGTTCTCATC一3’(Sigma),琼脂糖凝胶(SeaKem,批 

号:50004),10×TBE,pH一8.3(Vivantis Technologies,批 

号:PB1040 1I ),1 KB DNA ladder(Promega,批号:G5711), 

核酸染料(RedSafe INtROM Biotechnology,批号:21 141), 

修复机制,非同源修复多为碱基的丢失、插入,同源修复需要 

特定的DNA模版,最终导敛基因突变[。 ]。随着基因编辑技 

术的发展,快速、高效、经济的检测突变的方法显得尤为重 

要,传统的基凶测序技术昂贵且费时,往往不能满足高通量 

检测突变的需求。近期发现的高分辨率熔融曲线被证实可 

以检测突变【 ,但是这种方法对于小片段PCR产物需要有 

特殊的定量方法 。另一种检测突变的有效方法是利用突 

DNA测序仪(Applied Biosystems,3130xl Genetic Analyzer), 

PCR仪(TProfessional Thermocycler Biometra),电泳槽 

(BIO RAD PowerPac Basic),微量离心机(CAPSUI EF— 

UGE TOMY PMC 860),紫外影像仪(ChemiDoc Touch 

Gel Imaging System 1708370 BI()RAD),分光光度计(Nano 

DropTM 2000 Spectrophotometers Thermo Scientific),恒温水 

变的DNA序列与未突变的DNA序列进行杂交使其形成异 

源双链,特异件核酸内切酶能够检测并切开错配的DNA序 

浴锅(PolyScience WB20A11B)。 

列 。常用的检测基因突变的特异型核酸内切酶为T7EI 

1.2 PCR突变基因片段:分别用野生型和点突变型的大鼠 

基因组DNA,PCR扩增出突变位置的基因片段。PCR反应 

体系:Nuclease—Free H 2 O 1 2.4“I ;5×Phusion HF Reaction 

Buffer 4“L;dNTP(2 mmol/L)0.4“L;Primer(+) 

和Surveyor。TTE1核酸内切酶能够识别并切割不完全配对 

DNA、十字型结构DNA、Holliday结构或交叉DNA、异源双 

链DNA或者以更慢的速度切割双链DNA。Surveyor核酸 

内切酶是CEI I错配特异性核酸酶中的一种。CELI是从芹 

菜中分离出来的一种单链特异性核酸酶,能准确切割异源双 

链DNA错配位点。本文的主要目的在于比较T7E1和Sur— 

veyor核酸内切酶对于由CRISPR~Cas9引发的点突变的检测 

活性的区别。 

(10/,mol/I )1 I ;Primer( )(10 tLmol/L)1 L;Template 

(100 ng/t*L)1 L;Phusion polymerase 0.2 L。PCR反应 

条件:98℃,30 s;98℃,10 8;64℃,3O s;72℃,15 s;72℃, 

5 min;4℃, ;35 cycles。 

1.3 DNA杂交:PCR反应结束后,琼脂糖凝胶电泳确认有 

条带后,PCR试剂盒纯化,对未突变和点突变的PCR产物分 

1材料和方法 

1.1 主要试剂和仪器:T7E1(New England Biolabs,批号: 

MO3O2S),Surveyor(Integrated DNA Technologies,批号: 

别进行定量并调至同一浓度。分别用0 Mut(10“L wT)、 

5 Mut(0.5/,L Mut+9.5 L wT)、10 (1 L Mut+9“L 

WT)、20 Mut(2 L Mut+8 L WT)、30 Mut(3 L Mut 

Mut 

706025),PCR纯化试剂盒(QIAGEN,批号:28106),Nucle— 

ase—Free Water(Promega,批号:P1193),5×Phusion HF Re 

action Buffer(Thermo Scientific,批号:F 538L),dNTP(Ap— 

plied Biosystems,批号:N8080261),phusion DNA polymerase 

(Thermo Scientific,批号:F一530L),Primer:(4-)5’一CT— 

+7 L WT)、40 Mut(4 I Mut+6 L WT)、50 

(5 L Mut+5 L WT)、60 

7O 

Mut(6 L Mut+4“L WT)、 

Mut(8 uL Mut+ 

Mut 

Mut(7 L Mut+3“L wT)、80 

2 L wT)、90 Mut(9/,L Mut+l L wT)、95 

(9.5 L Mut+0.5 L WT)、100 Mut(10 L Mut)进行 

・ 

890 ・ 广西医科大学学报2015 Dec;32(6) 

60 

5O 

,、

40 

3O 

¥ 

善20 

10 

0 

0 10 20 30 40 50 60 70 80 90 100 

突变DNA的百分量(%) 

图3 T7E1和Surveyor酶切效率的定量分析 

genetic editing tool kit:ZFNs,TALENs,and CRISPR— 

3 讨 论 

在DNA测序之前,任何的分子生物学实验室可以利用 

文中设计方法检测突变DNA,从基因组DNA到检测是否发 

生基因突变的整个过程仅需一天,大大的节省了时间及开 

支,是高通量检测基因突变的绝佳方法。研究结果表明, 

Cas9[J].The Journal of Clinical Investigation,2014, 

124(1O):4154—4161. 

Ga J。Gersbach CA,Barbas CF.ZFN,TALEN,and 

CRISPR/Cas based methods for genome engineering 

[J].Trends Biotechnol,2013,31(7):397—405. 

L。J 

Terns RM,Terns MP.CRISPR based technologies: 

T7E1和Surveyor核酸内切酶均具备检测点突变的能力,且 

均能检测5 的突变DNA,可见核酸内切酶检测基因突变的 

prokaryotic defense weapons repurposed[J].Trends 

Genet,2014,30(3):111 118. 

灵敏度很高,在突变型和野生型DNA等比例混合杂交时,酶 

切效率达到最高,且在检测点突变的效率上,T7E1核酸内切 

酶的效率要高于Surveyor,其检测突变的机制有待进一步研 

究。 

L J 

Sutter AG,Palanisamy AP,Kurtz N,et a1.Efficient 

method of genotyping ob/ob mice using high resolution 

melting analysis[J].PI oS One,2013,8(11):e78840. 

L0 J 

Dahlem TJ,Hoshijima K,Jurynec MJ,et a1.Simple 

methods for generating and detecting locus——specific mu—— 

tations induced with TALENs in the zebrafish genome 

核酸内切酶错配剪切法检测突变基因也存在一个关键 

的控制因素,就是PCR扩增模版DNA的过程,如果DNA聚 

合酶的保真度有限,那么扩增出来的DNA片段就可能引入 

突变,特别是对于PCR扩增末端的循环,会导致重组PCR产 

物的形成 ],从而导致后续的实验结果受到影响,对于该问 L0 

[J].PLoS Genet,2012,8(8):el002861. 

Vouillot L,Thflie A,Pollet N.Comparison of T7E1 and 

surveyor mismatch cleavage assays to detect mutations 

题的解决方案是必须使用高保真度的DNA聚合酶来扩增 

DNA片段,保证扩增片段的特异性,减少因DNA聚合酶嵌 

合错误导致出现的无关背景。 

triggered by engineered nucleases[J].G3(Bethesda), 

2015,5(3):407—415. 

对于该实验,本课题组只比较两种常用的检测突变的核 L,_ 

Qiu P,Shandilya H,13"Alessio J M,et a1.Mutation detec 

酸内切酶对于点突变基因检测活性的区别,后续的验证性实 

验应在片段丢失以及随机插入缺失突变基因中得到全面的 

tion using Surveyor nuclease[J].Biotechniques,2004, 

36(4):702—707. 

验证,探索两种核酸内切酶对于不同类型突变的检测原理及 L J 

Judo MS,Wede1 AB,Wils。n C.Stimulation and sup 

效率分析,完善核酸内切酶检测基因突变的方法,为高通量 

检测基因突变技术提供理论依据。 

pression of PCR—mediated recombination[J].Nucleic 

Acids Res,1998,26(7):1819—1825. 

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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742236699)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742456787)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742456787)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742506133)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742506133)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742506838)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742506838)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742569104)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742569104)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742570293)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742570293)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1742598564)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1742598564)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743597997)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743597997)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743670343)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743670343)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743775471)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743775471)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743779298)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743779298)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743813252)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743813252)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743814022)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743814022)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743814482)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743814482)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743815495)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743815495)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1743828277)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1743828277)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
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