BACKGROUND Diabetic intracerebral hemorrhage(ICH)is a serious complication of diabetes.The role and mechanism of bone marrow mesenchymal stem cell(BMSC)-derived exosomes(BMSC-exo)in neuroinflammation post-ICH in patie...BACKGROUND Diabetic intracerebral hemorrhage(ICH)is a serious complication of diabetes.The role and mechanism of bone marrow mesenchymal stem cell(BMSC)-derived exosomes(BMSC-exo)in neuroinflammation post-ICH in patients with diabetes are unknown.In this study,we investigated the regulation of BMSC-exo on hyperglycemia-induced neuroinflammation.AIM To study the mechanism of BMSC-exo on nerve function damage after diabetes complicated with cerebral hemorrhage.METHODS BMSC-exo were isolated from mouse BMSC media.This was followed by transfection with microRNA-129-5p(miR-129-5p).BMSC-exo or miR-129-5poverexpressing BMSC-exo were intravitreally injected into a diabetes mouse model with ICH for in vivo analyses and were cocultured with high glucoseaffected BV2 cells for in vitro analyses.The dual luciferase test and RNA immunoprecipitation test verified the targeted binding relationship between miR-129-5p and high-mobility group box 1(HMGB1).Quantitative polymerase chain reaction,western blotting,and enzyme-linked immunosorbent assay were conducted to assess the levels of some inflammation factors,such as HMGB1,interleukin 6,interleukin 1β,toll-like receptor 4,and tumor necrosis factorα.Brain water content,neural function deficit score,and Evans blue were used to measure the neural function of mice.RESULTS Our findings indicated that BMSC-exo can promote neuroinflammation and functional recovery.MicroRNA chip analysis of BMSC-exo identified miR-129-5p as the specific microRNA with a protective role in neuroinflammation.Overexpression of miR-129-5p in BMSC-exo reduced the inflammatory response and neurological impairment in comorbid diabetes and ICH cases.Furthermore,we found that miR-129-5p had a targeted binding relationship with HMGB1 mRNA.CONCLUSION We demonstrated that BMSC-exo can reduce the inflammatory response after ICH with diabetes,thereby improving the neurological function of the brain.展开更多
目的探究血清microRNA-21(miR-21)、microRNA-193a-3p(miR-193a-3p)水平与结直肠癌患者手术预后的关系。方法回顾性分析2020年1月—2022年1月苏州大学附属第一医院收治112例结直肠癌患者的病历资料。患者均接受结直肠癌根治术,术后随访1...目的探究血清microRNA-21(miR-21)、microRNA-193a-3p(miR-193a-3p)水平与结直肠癌患者手术预后的关系。方法回顾性分析2020年1月—2022年1月苏州大学附属第一医院收治112例结直肠癌患者的病历资料。患者均接受结直肠癌根治术,术后随访16个月,记录患者的预后生存结局,多因素逐步Logistic回归分析结直肠癌患者手术预后的影响因素,评估血清miR-21、miR-193a-3p对结直肠癌患者预后的预测效能。结果112例结直肠癌患者死亡22例,病死率为19.64%;生存90例,生存率为80.36%。死亡组术前血清miR-21 mRNA相对表达量、临床分期Ⅲ期占比、淋巴结转移率均高于生存组(P<0.05),血清miR-193a-3p m RNA相对表达量低于生存组(P<0.05)。多因素逐步Logistic回归分析结果显示,临床分期Ⅲ期[OR=3.777(95%CI:1.399,10.194)]、淋巴结转移[OR=5.099(95%CI:1.715,15.156)]、miR-21表达升高[OR=4.889(95%CI:1.645,14.533)]、miR-193a-3p表达降低[OR=4.402(95%CI:1.481,13.084)]均是直肠癌患者预后的影响因素(P<0.05)。受试者工作特性曲线分析结果显示,血清miR-21、miR-193a-3p单一及联合预测结直肠癌预后的敏感性分别为69.04%(95%CI:0.487,0.813)、72.73%(95%CI:0.495,0.884)、86.36%(95%CI:0.640,0.964),特异性分别为62.22%(95%CI:0.513,0.720)、68.89%(95%CI:0.581,0.780)、90.00%(95%CI:0.814,0.950),曲线下面积分别为0.782、0.731和0.901。结论结直肠癌患者术前miR-21、miR-193a-3p表达与术后预后密切相关,且在结直肠癌患者的预后结局中表现出良好的预测效能。展开更多
基金Supported by the National Natural Science Foundation of China,No.81900743Heilongjiang Province Outstanding Young Medical Talents Training Grant Project,China,No.HYD2020YQ0007.
文摘BACKGROUND Diabetic intracerebral hemorrhage(ICH)is a serious complication of diabetes.The role and mechanism of bone marrow mesenchymal stem cell(BMSC)-derived exosomes(BMSC-exo)in neuroinflammation post-ICH in patients with diabetes are unknown.In this study,we investigated the regulation of BMSC-exo on hyperglycemia-induced neuroinflammation.AIM To study the mechanism of BMSC-exo on nerve function damage after diabetes complicated with cerebral hemorrhage.METHODS BMSC-exo were isolated from mouse BMSC media.This was followed by transfection with microRNA-129-5p(miR-129-5p).BMSC-exo or miR-129-5poverexpressing BMSC-exo were intravitreally injected into a diabetes mouse model with ICH for in vivo analyses and were cocultured with high glucoseaffected BV2 cells for in vitro analyses.The dual luciferase test and RNA immunoprecipitation test verified the targeted binding relationship between miR-129-5p and high-mobility group box 1(HMGB1).Quantitative polymerase chain reaction,western blotting,and enzyme-linked immunosorbent assay were conducted to assess the levels of some inflammation factors,such as HMGB1,interleukin 6,interleukin 1β,toll-like receptor 4,and tumor necrosis factorα.Brain water content,neural function deficit score,and Evans blue were used to measure the neural function of mice.RESULTS Our findings indicated that BMSC-exo can promote neuroinflammation and functional recovery.MicroRNA chip analysis of BMSC-exo identified miR-129-5p as the specific microRNA with a protective role in neuroinflammation.Overexpression of miR-129-5p in BMSC-exo reduced the inflammatory response and neurological impairment in comorbid diabetes and ICH cases.Furthermore,we found that miR-129-5p had a targeted binding relationship with HMGB1 mRNA.CONCLUSION We demonstrated that BMSC-exo can reduce the inflammatory response after ICH with diabetes,thereby improving the neurological function of the brain.
文摘目的探究血清microRNA-21(miR-21)、microRNA-193a-3p(miR-193a-3p)水平与结直肠癌患者手术预后的关系。方法回顾性分析2020年1月—2022年1月苏州大学附属第一医院收治112例结直肠癌患者的病历资料。患者均接受结直肠癌根治术,术后随访16个月,记录患者的预后生存结局,多因素逐步Logistic回归分析结直肠癌患者手术预后的影响因素,评估血清miR-21、miR-193a-3p对结直肠癌患者预后的预测效能。结果112例结直肠癌患者死亡22例,病死率为19.64%;生存90例,生存率为80.36%。死亡组术前血清miR-21 mRNA相对表达量、临床分期Ⅲ期占比、淋巴结转移率均高于生存组(P<0.05),血清miR-193a-3p m RNA相对表达量低于生存组(P<0.05)。多因素逐步Logistic回归分析结果显示,临床分期Ⅲ期[OR=3.777(95%CI:1.399,10.194)]、淋巴结转移[OR=5.099(95%CI:1.715,15.156)]、miR-21表达升高[OR=4.889(95%CI:1.645,14.533)]、miR-193a-3p表达降低[OR=4.402(95%CI:1.481,13.084)]均是直肠癌患者预后的影响因素(P<0.05)。受试者工作特性曲线分析结果显示,血清miR-21、miR-193a-3p单一及联合预测结直肠癌预后的敏感性分别为69.04%(95%CI:0.487,0.813)、72.73%(95%CI:0.495,0.884)、86.36%(95%CI:0.640,0.964),特异性分别为62.22%(95%CI:0.513,0.720)、68.89%(95%CI:0.581,0.780)、90.00%(95%CI:0.814,0.950),曲线下面积分别为0.782、0.731和0.901。结论结直肠癌患者术前miR-21、miR-193a-3p表达与术后预后密切相关,且在结直肠癌患者的预后结局中表现出良好的预测效能。
