Diabetes:成熟脂肪细胞与前体细胞对话 共商分化“大计”

2015-09-10 佚名 生物谷

近日,来自瑞士的科学家在国际学术期刊diabetes上发表了一项最新研究进展,他们利用细胞共培养技术和蛋白质组学技术发现了一些可以通过旁分泌或内分泌方式调控脂肪细胞分化的脂肪因子,这对于肥胖及相关代谢综合症治疗具有一定意义。 许多研究已经发现不同部位的脂肪组织会分泌产生许多不同的脂肪因子,但是这些脂肪因子的旁分泌或自分泌对于脂肪细胞的形成具有何种影响目前仍未完全了解。 在这项研究中,研

近日,来自瑞士的科学家在国际学术期刊diabetes上发表了一项最新研究进展,他们利用细胞共培养技术和蛋白质组学技术发现了一些可以通过旁分泌或内分泌方式调控脂肪细胞分化的脂肪因子,这对于肥胖及相关代谢综合症治疗具有一定意义。

许多研究已经发现不同部位的脂肪组织会分泌产生许多不同的脂肪因子,但是这些脂肪因子的旁分泌或自分泌对于脂肪细胞的形成具有何种影响目前仍未完全了解。

在这项研究中,研究人员开发了一种细胞共培养的方法,将脂肪前体细胞与原代的皮下脂肪,内脏脂肪细胞或组织块共同培养在一起,利用这种方法研究人员得到了一些能够调节脂肪前体细胞分化的分泌因子。

随后,他们借助蛋白组学的方法对分离得到的分泌组样品进行了分析,鉴定出了能够正向和负向调节脂肪细胞形成的不同分泌因子,在这些分泌因子中,Slc27a1,Vim,Cp以及Ecm1能够促进脂肪细胞分化,而Got2,Cpq,Il1rl1/ST-IL-33,Sparc以及Lgals3bp能够抑制脂肪细胞分化。

之后,研究人员对比较瘦的,超重以及超重并患有2型糖尿病的个体的皮下脂肪细胞进行了分析,结果发现Vim和Slc27a1的表达与脂肪细胞大小和BMI呈负相关,而与胰岛素敏感性呈正相关关系,但Sparc和Got2与前两者的趋势恰好相反。研究人员进一步研究发现肥胖病人体重减轻后Slc27a1的表达会出现增加,而Sparc的表达则会相应下降。

总的来说,这项研究发现了通过正向和负向旁分泌及内分泌反馈环机制调节脂肪细胞分化的脂肪因子,这些因子的发现对于肥胖及代谢综合征的治疗有一定启示意义。

原文出处:

Tenagne D. Challa,et al.Regulation of de novo adipocyte differentiation through crosstalk between adipocytes and pre-adipocytes.Diabetes.2015

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CSE2015专题报道:肥胖研究进展及其危害

2015年中华医学会第十四次全国内分泌学学术会在南京召开,在8月28日下午“肥胖及代谢”专场上,两位专家谈到了肥胖的年度进展和对性腺功能的危害。2014-2015年度肥胖研究年度进展——陈璐璐(华中科技大学同济医学院附属协和医院)肥胖可危害人类健康,新近研究对肥胖的危害进行了量化,超标的体重对预期寿命存在明显的影响。肥胖程度越严重,发生肥胖的年龄越小,其影响也就越大;严重的肥胖甚至可使预期寿命减少