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灵芝酸A通过调节AMPK/ULK1/mTOR通路对肺癌细胞凋亡和自噬的影响
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作者 邓宇新 黄伟 +4 位作者 韦思齐 黎恒杰 漆奋强 向敏峰 向水 《河北医学》 2025年第5期705-710,共6页
目的:探讨灵芝酸A(GA-A)调节腺苷5'-单磷酸活化蛋白激酶(AMPK)/unc-51样自噬激活激酶(ULK1)/哺乳动物雷帕霉素靶蛋白(mTOR)通路对人肺癌细胞凋亡和自噬的影响。方法:细胞计数试剂盒(CCK-8)检测GA-A(0~160μM)对A549细胞的毒性;将A54... 目的:探讨灵芝酸A(GA-A)调节腺苷5'-单磷酸活化蛋白激酶(AMPK)/unc-51样自噬激活激酶(ULK1)/哺乳动物雷帕霉素靶蛋白(mTOR)通路对人肺癌细胞凋亡和自噬的影响。方法:细胞计数试剂盒(CCK-8)检测GA-A(0~160μM)对A549细胞的毒性;将A549细胞分为对照组(Ctrl)、低剂量GA-A组(GA-A-L,40μM)、高剂量GA-A组(GA-A-H,80μM)和高剂量GA-A+AMPK抑制剂组(GA-A-H+compound C)。集落形成实验检测细胞增殖能力;流式细胞术检测A549细胞凋亡;MTT法检测细胞的增殖;Western blot检测A549细胞中凋亡、自噬和AMPK/ULK1/mTOR通路相关蛋白表达水平。结果:与0μM组相比,GA-A处理组A549细胞增殖抑制率显著升高(P<0.05),GA-A对A549细胞的IC50为81.44μM;与Ctrl组相比,GA-A-L、GA-A-H组中A549细胞存活率、集落形成率、Bcl-2、p62蛋白表达和p-mTOR/mTOR水平均显著降低(P<0.05),细胞凋亡率、自噬小体个数、Bax蛋白表达和LC3B-II/I、p-AMPK/AMPK、p-ULK1/ULK1水平均显著升高(P<0.05);与GA-A-H组相比,GA-A-H+compound C组中细胞存活率、集落形成率、Bcl-2、p62蛋白表达和p-mTOR/mTOR水平均显著升高(P<0.05),细胞凋亡率、自噬小体个数、Bax蛋白表达和LC3B-II/I、p-AMPK/AMPK、p-ULK1/ULK1水平均显著降低(P<0.05)。结论:GA-A可能通过调控AMPK/ULK1/mTOR通路中关键蛋白的表达诱导人肺癌细胞凋亡和自噬,抑制细胞增殖。 展开更多
关键词 肺癌细胞 灵芝酸A 腺苷5'-单磷酸活化蛋白激酶/unc-51样自噬激活激酶/哺乳动物雷帕霉素靶蛋白通路
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Newly identified genetic variant rs2294693 in UNC5CL gene is associated with decreased risk of esophageal carcinoma in the J&K Population–India
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作者 RUCHI SHAH SONALI VERMA +7 位作者 AMRITA BHAT GH RASOOL BHAT VARUN SHARMA INDU SHARMA HEMENDER SINGH SANDEEP KAUL EKTA RAI SWARKAR SHARMA 《BIOCELL》 SCIE 2021年第3期665-670,共6页
Esophageal cancer is the second most common type of cancer after lung carcinoma in the state of Jammu and Kashmir(J&K).The understanding of genetics in Esophageal cancer development is poor in the state.Genome wid... Esophageal cancer is the second most common type of cancer after lung carcinoma in the state of Jammu and Kashmir(J&K).The understanding of genetics in Esophageal cancer development is poor in the state.Genome wide association studies(GWAS)has proved to be unsurpassed tool in identification of new loci associated with different cancers.GWAS in Chinese population has identified SNP rs2294693 present in UNC5CL(UNC-5 Family C-Terminal like)to be associated with non-cardia gastric cancer.We performed a case control association study and genotyped the SNP rs2294693 using Taqman allele discrimination assay in 566 individuals(166 esophageal cancer patients and 400 controls)belonging to the J&K population.A statistically significant protective association with allelic odds ratio of 0.73(0.56–0.94 at 95%CI)and p value=0.016 was observed.This is the first study in relation to esophageal cancer in the Jammu and Kashmir population,so far it has been studied in association with gastric carcinoma in the Chinese population only.The results indicate that the polymorphism rs2294693 is associated with esophageal cancer susceptibility and the mutant(T)allele might be a protective factor for esophageal cancer among Jammu and Kashmir population.Further the functional characterization of the variation is also warranted. 展开更多
关键词 Esophageal cancer Single nucleotide polymorphism unc-5 Family C-Terminal(UNC5CL) Candidate gene
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