|
OGP 对低氧环境中小鼠BMSCs 成脂分化影响的研究 |
Effects of osteogenic growth peptide combined with hypoxia on the adipogenice differentiation ofmouse bone marrow mesenchymal stem cells |
|
DOI:10.3969/j.issn.1006-7108.2022.05.009 |
中文关键词: 骨髓间充质干细胞 低氧 成骨生长肽 成脂分化 |
英文关键词:bone marrow mesenchymal stem cells hypoxia osteogenic growth peptide adipogenesis |
基金项目:国家自然科学基金(81760392)?云南省医学学科后
备人才项目(H ̄2017057)?云南省科技厅 ̄昆明医科大学联合专项
(2018FE001 ̄108) |
|
摘要点击次数: 1131 |
全文下载次数: 0 |
中文摘要: |
目的 检测成骨生长肽(osteogenic growth peptide?OGP) 与低氧环境对小鼠骨髓间充质干细胞( bone marrow
mesenchymal stem cells?BMSCs)成脂肪分化的影响? 方法 实验随机分为4 组:A 组(常氧组)、B 组(1%O2 组)、C 组(常氧+
10 ̄9mol/ L OGP 组)、D 组(1%O2 +10 ̄9 mol/ L OGP 组)? ELISA 法定量检测低氧诱导因子1α(hypoxia inducible factor 1α?HIF ̄
1α)蛋白的表达?14 d 后?油红O 染色观察BMSCs 脂滴形成情况?实时荧光定量PCR 和Western blotting 检测成脂相关基因
PPAR ̄γ 和C/ EBPα 的mRNA 和蛋白表达水平? 结果 与A 组及C 组相比?B 组与D 组HIF ̄1α 表达明显上调(P<0?? 01)?与
A 组相比?B 组、C 组、D 组脂滴生成及PPAR ̄γ 和C/ EBPα 的mRNA 和蛋白表达降低(P<0?? 01)?与B 组及C 组相比?D 组中脂
滴生成及PPAR ̄γ 和C/ EBPα 的信使RNA 和蛋白表达下调(P<0?? 01)? 结论 OGP 及1%低氧环境均能抑制BMSCs 成脂分
化?且二者抑制BMSCs 成脂分化具有协同效应? |
英文摘要: |
Objective To investigate the effects of osteogenic growth peptide conbined with physical hypoxia on the adipogenic
differentiation of mouse bone marrow mesenchymal stem cells. Methods The study was randomly divided into four groups: group
A(under normal oxygen level)? group B (under 1% oxygen level)? group C (with 10 ̄9mol / L OGP under normal oxygen level)?
group D (with OGP under 1% oxygen level). Cells were collected at 24 h to detect the hypoxia inducible factor 1α(HIF ̄1α)
through ELISA .At 14 d?cells were collected to observe the formation of lipid droplets in the cells and to detect the mRNA and
protein level of PPAR ̄γ and C / EBPα using qPCR and western ̄blotting. Results Compared with group A and group C? the
expression of HIF ̄1α in the group B and group D upregulated obviously. Compared with that in group A? the lipid droplets
accumulation increased and the expression of PPAR ̄γ and C / EBPα on the mRNA and protein level upregulated in the group B?
group C and group D? compared with that in group B and group? the lipid droplets accumulation increased and the expression of
PPAR ̄γ and C / EBPα on the mRNA and protein level upregulated in the group D. Conclusion OGP and hypoxia can both inhibit
the BMSCs adipogenesis and OGP plus hypoxia have co ̄effect to inhibit the adipogenesis of BMSCs |
查看全文 查看/发表评论 下载PDF阅读器 |
关闭 |