胰岛素类生长因子1受体依赖的途径驱动心肌损伤后心上脂肪组织的形成
Lior Zangi1, Marcela S Oliveira2, Lillian Y Ye2
1From Cardiovascular Research Center, Department of Genetics and Genomic Sciences, and Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York (L.Z., N.S., Y.H.); Department of Cardiology, Boston Children's Hospital, MA (L.Z., M.S.O., L.Y.Y., Q.M., W.T.P.); Cardiovascular and Metabolic Diseases Innovative Medicine Biotech Unit, AstraZeneca, Möllndal, Sweden (D.S., Q.-D.W.); The State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences (B.Z.); Department of Genetics (W.L.C.), Harvard Stem Cell Institute (W.E., W.T.P.), Harvard Medical School, and Cardiovascular Research Center, Massachusetts General Hospital (M.A.), Harvard Medical School, Boston, MA; and Department of Cell and Molecular Biology and Medicine, Karolinska Institutet, Stockholm, Sweden (K.R.C.). lior.zangi@mssm.edu wpu@pulab.org kenneth.chien@ki.se.
心脏病发作后的心脏脂肪组织的形成是由Wt1+细胞分化成脂肪所驱动的. 胰岛素类生长因子1受体 (IGF1R) 信号传递对于这一过程至关重要,为治疗提供了潜在的点.
科学领域:
- 心血管生物学
- 脂肪组织生物学
- 干细胞生物学
背景情况:
- 皮心脂肪组织 (EAT) 容量与冠状动脉疾病有关,独立于整体体质量.
- EAT的确切起源和监管信号通路仍然不完全理解.
研究的目的:
- 调查调节心上脂肪组织形成的膜信号通路.
- 确定心肌梗塞后心上脂肪组织的细胞起源.
主要方法:
- 使用修改的mRNA查方法来评估对心表原体的膜因子影响.
- 在小鼠模型中采用两种独立的血统追踪策略进行细胞起源分析.
主要成果:
- 在心肌梗塞发生后,表达Wt1的中细胞分化为心上脂肪组织.
- 胰岛素样生长因子1受体 (IGF1R) 的激活对于这种Wt1+细胞分化至关重要.
- 在心肌梗塞后,IGF1R抑制显著降低了Wt1+细胞的脂肪分化.
结论:
- 在心肌损伤后,IGF1R信号传递是调节心上脂肪组织形成的关键途径.
- 这一途径将Wt1+血统细胞命运重定向到脂肪生成.
- 修改的mRNA查是一种强大的工具,用于剖析疾病中的原始细胞信号.
相关概念视频
Insulin: The Receptor and Signaling Pathways
cAMP-dependent Protein Kinase Pathways
PI3K/mTOR/AKT Signaling Pathway
Regulation of Angiogenesis and Blood Supply
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
TGF - β Signaling Pathway


