幽門(mén)螺桿菌毒力因子VacA促進(jìn)胃上皮GES-1細(xì)胞DNA同源重組修復(fù)
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目的 檢測(cè)幽門(mén)螺桿菌(Helicobacter pylori,H.pylori)標(biāo)準(zhǔn)株(Hp P12)和其毒力因子VacA對(duì)人胃黏膜上皮細(xì)胞(GES-1)DNA損傷和同源重組(homologous recombination,HR)修復(fù)的影響。方法 應(yīng)用Hp P12和其vacA基因敲除株(Hp P12 ΔvacA)以感染復(fù)數(shù)(multiplicity of infection,MOI)=100分別感染GES-1細(xì)胞,采用依托泊苷(50 μmol/L)或絲裂霉素(0.5 μg/ml)處理2 h的GES-1細(xì)胞作為陽(yáng)性對(duì)照,Western blot和免疫熒光方法檢測(cè)DNA損傷標(biāo)記蛋白γH2AX、HR修復(fù)關(guān)鍵蛋白(Rad51、pMRE11、CtIP和pCtIP)的表達(dá)水平以及在DNA損傷位點(diǎn)的募集情況;進(jìn)一步采用Hp P12和Hp P12 ΔvacA菌株感染人胚腎HEK-293(DR-GFP)細(xì)胞系,驗(yàn)證VacA蛋白對(duì)HR修復(fù)的影響。結(jié)果 DNA損傷標(biāo)記蛋白γH2AX的表達(dá)和募集,在Hp P12感染組較未感染組上調(diào)(P<0.05),在Hp P12 ΔvacA感染組較標(biāo)準(zhǔn)株感染組下調(diào)(P...
【文章來(lái)源】:中華微生物學(xué)和免疫學(xué)雜志. 2019,(06)
【文章頁(yè)數(shù)】:8 頁(yè)
【參考文獻(xiàn)】:
期刊論文
[1]Helicobacter pylori in gastric carcinogenesis[J]. Hyo Jun Ahn,Dong Soo Lee. World Journal of Gastrointestinal Oncology. 2015(12)
[2]What exists beyond cag A and vacA? Helicobacter pylori genes in gastric diseases[J]. Débora Menezes da Costa,Eliane dos Santos Pereira,Silvia Helena Barem Rabenhorst. World Journal of Gastroenterology. 2015(37)
[3]Effect of Helicobacter pylori on gastric epithelial cells[J]. Shatha Alzahrani,Taslima T Lina,Jazmin Gonzalez,Irina V Pinchuk,Ellen J Beswick,Victor E Reyes. World Journal of Gastroenterology. 2014(36)
[4]人胃粘膜上皮細(xì)胞系GES-1的建立及其生物學(xué)特性[J]. 柯楊,寧濤,王冰,路桂榮,馮莉雅,李吉友,呂有勇,鄂征. 中華腫瘤雜志. 1994(01)
本文編號(hào):3338022
【文章來(lái)源】:中華微生物學(xué)和免疫學(xué)雜志. 2019,(06)
【文章頁(yè)數(shù)】:8 頁(yè)
【參考文獻(xiàn)】:
期刊論文
[1]Helicobacter pylori in gastric carcinogenesis[J]. Hyo Jun Ahn,Dong Soo Lee. World Journal of Gastrointestinal Oncology. 2015(12)
[2]What exists beyond cag A and vacA? Helicobacter pylori genes in gastric diseases[J]. Débora Menezes da Costa,Eliane dos Santos Pereira,Silvia Helena Barem Rabenhorst. World Journal of Gastroenterology. 2015(37)
[3]Effect of Helicobacter pylori on gastric epithelial cells[J]. Shatha Alzahrani,Taslima T Lina,Jazmin Gonzalez,Irina V Pinchuk,Ellen J Beswick,Victor E Reyes. World Journal of Gastroenterology. 2014(36)
[4]人胃粘膜上皮細(xì)胞系GES-1的建立及其生物學(xué)特性[J]. 柯楊,寧濤,王冰,路桂榮,馮莉雅,李吉友,呂有勇,鄂征. 中華腫瘤雜志. 1994(01)
本文編號(hào):3338022
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