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南京医科大学学报(自然科学版) 第43卷第5期
·604 · Journal of Nanjing Medical University(Natural Sciences) 2023年5月
·肿瘤专题研究·
mTOR信号通路在调控卵巢癌CD4 Treg糖代谢中的作用
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付 鑫 ,吴 茗 1,2,3 ,陈 献 ,刘书娜 ,张 磊 ,李 荣 ,徐 娟 ,陶子琦 ,王 婷 ,王 芳 1,2*
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南京医科大学第一附属医院检验学部,国家医学检验临床医学研究中心分中心,江苏 南京 210029;复旦大学附属儿科医
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院,国家儿童医学中心,上海 201102;深圳市宝安区妇幼保健院检验科,广东 深圳 518000
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[摘 要] 目的:初步探讨 mTOR 信号通路在卵巢癌患者 CD4 Treg(CD4 CD25 CD127 调节性 T 细胞)糖代谢过程中的作
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low
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用。方法:流式细胞术检测卵巢癌患者(ovarian cancer,OC)、卵巢良性肿瘤患者(benign ovarian tumor,BOT)以及健康对照者
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(healthy controls,HC)外周血CD4 Treg中mTOR 细胞的百分比;建立CD4 Treg与SKOV3共培养体系,检测共培养前后mTOR +
的CD4 Treg百分比,使用雷帕霉素抑制mTOR信号后,采用比色法检测CD4 Treg细胞糖摄取和糖酵解水平,采用实时荧光定
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量 PCR(real⁃time fluorescence quantitative PCR,RT⁃PCR)和 Western blot 检测 CD4 Treg 细胞糖代谢相关基因和蛋白的表达水
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平。结果:卵巢癌患者外周血中 mTOR 的CD4 Treg百分比显著高于健康对照组[(77.4±8.12)% vs.(64.19±9.7)%,P<0.01),与
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SKOV3共培养后CD4 Treg中mTOR 细胞百分比明显升高(P<0.05),mTOR信号通路相关基因和蛋白表达水平也升高;抑制
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SKOV3生长环境中CD4 Treg的mTOR信号后其糖代谢相关基因和蛋白表达水平显著下降,糖摄取(193.49±13.28 vs. 174.05±
14.58,P<0.01)和糖酵解水平(21.97±0.87 vs. 4.85±1.54,P<0.001)也明显下降。结论:卵巢癌患者 CD4 Treg 中 mTOR 及其下
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游信号通路明显活化,mTOR信号通路可通过调节CD4 Treg的糖摄取和糖酵解水平,并调控糖代谢相关基因和蛋白的表达水
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平,影响CD4 Treg的糖代谢进程。
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[关键词] 卵巢癌;调节性T细胞;mTOR信号;糖代谢
[中图分类号] R737.31 [文献标志码] A [文章编号] 1007⁃4368(2023)05⁃604⁃07
doi:10.7655/NYDXBNS20230503
Role of mTOR signaling pathway in regulating CD4 Treg glucose metabolism in ovarian
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cancer
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FU Xin 1,2 ,WU Ming 1,2,3 ,CHEN Xian ,LIU Shuna 1,2 ,ZHANG Lei 1,2 ,LI Rong 1,2 ,XU Juan 1,2 ,TAO Ziqi 1,2 ,
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WANG Ting ,WANG Fang
1 Department of Laboratory Medicine,Branch of National Clinical Research Center for Laboratory Medicine,the First
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Affiliated Hospital of Nanjing Medical University,Nanjing 210029;Children’s Hospital of Fudan University,
National Children’s Medical Center,Shanghai 201102;Department of Laboratory Medicine,Shenzhen Baoan
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Women’s and Children’s Hospital,Shenzhen 518000,China
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[Abstract] Objective:To explore the role of mTOR signaling pathway in CD4 regulatory T cell(Treg)glucose metabolism in
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ovarian cancer patients. Methods:Flow cytometry was used to detect the percentage of mTOR CD4 Treg in peripheral blood with
ovarian cancer(OC)patients,benign ovarian tumor(BOT)patients and healthy controls(HC). We established a coculture system of
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human CD4 Treg with ovarian cancer cell SKOV3,and detected the percentage of mTOR CD4 Treg before and after co⁃culture. After
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mTOR signal was inhibited by rapamycin,the glucose uptake and glycolysis levels of CD4 Treg were detected by colorimetry,and the
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expression levels of genes and proteins related to glucose metabolism in CD4 Treg were detected by real⁃time quantitative PCR and
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Western blot. Results:The percentage of mTOR CD4 Treg in peripheral blood of ovarian cancer patients was significantly higher than
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that of healthy controls[(77.4±8.12)% vs.(64.19±9.7)%,P < 0.01]. After co⁃culture with SKOV3,the percentage of mTOR CD4 +
Treg were elevated(P < 0.05),and the levels of mTOR signaling pathway related genes and proteins also increased. After inhibition of
[基金项目] 国家自然科学基金(81772779);深圳市宝安区科技创新计划基础研究项目(2020JD462)
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通信作者(Corresponding author),E⁃mail:wangfang@njmu.edu.cn