CD81 通过阻断 CD274/PD-L1 的选择性自噬降解驱动放射抵抗性胶质母细胞瘤的免疫逃逸
CD81 drives immune evasion in radioresistant glioblastoma by blocking selective autophagic degradation of CD274/PD-L1.
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Combinational administration of mesenchymal stem cell-derived exosomes and metformin reduces inflammatory responses in an in vitro model of insulin resistance in HepG2 cells.
Combinational administration of mesenchymal stem cell-derived exosomes and metformin reduces inflammatory responses in an in vitro model of insulin resistance in HepG2 cells.
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糖尿病是发达社会中极为常见的代谢紊乱。糖尿病的原因之一是胰岛素抵抗,它与胰岛素敏感细胞敏感性丧失相关。胰岛素抵抗在糖尿病发生前许多年就已在易患糖尿病的人体内出现。胰岛素抵抗与高血糖、高脂血症和代偿性高胰岛素血症等并发症相关,并引起肝脏炎症,若不治疗,可导致肝硬化、纤维化,甚至肝癌。二甲双胍是糖尿病患者的一线治疗药物,通过抑制肝细胞中的糖异生来降低血糖并提高胰岛素敏感性。使用二甲双胍有副作用,包括口中金属味、呕吐、恶心、腹泻和胃部不适。
因此,正在开发与二甲双胍联合的其他治疗方法。考虑到间充质干细胞(MSCs)来源外泌体的抗炎作用,其使用似乎有助于改善肝组织功能并预防炎症引起的损伤。
本研究探讨了沃顿胶MSCs来源外泌体联合二甲双胍在高糖诱导的HepG2细胞胰岛素抵抗模型中的抗炎作用。本研究表明,MSCs来源外泌体作为抗炎剂与二甲双胍联合,可通过减少炎症细胞因子产生,包括IL-1、IL-6和TNF-以及HepG2细胞凋亡,在不需改变二甲双胍剂量的情况下提高二甲双胍的治疗疗效。
Diabetes is a highly common metabolic disorder in advanced societies. One of the causes of diabetes is insulin resistance, which is associated with a loss of sensitivity to insulin-sensitive cells. Insulin resistance develops in the body of a person prone to diabetes many years before diabetes development. Insulin resistance is associated with complications such as hyperglycemia, hyperlipidemia, and compensatory hyperinsulinemia and causes liver inflammation, which, if left untreated, can lead to cirrhosis, fibrosis, and even liver cancer.
Metformin is the first line of treatment for patients with diabetes, which lowers blood sugar and increases insulin sensitivity by inhibiting gluconeogenesis in liver cells. The use of metformin has side effects, including a metallic taste in the mouth, vomiting, nausea, diarrhea, and upset stomach.
For this reason, other treatments, along with metformin, are being developed. Considering the anti-inflammatory role of mesenchymal stem cells (MSCs) derived exosomes, their use seems to help improve liver tissue function and prevent damage caused by inflammation.
This study investigated the anti-inflammatory effect of Wharton's jelly MSCs derived exosomes in combination with metformin in the HepG2 cells insulin resistance model induced by high glucose.
This study showed that MSCs derived exosomes as an anti-inflammatory agent in combination with metformin could increase the therapeutic efficacy of metformin without needing to change metformin doses by decreasing inflammatory cytokines production, including IL-1, IL-6, and TNF- and apoptosis in HepG2 cells.
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