Forskolin引起大鼠脂肪细胞内脂滴重塑(英文)
发布时间:2022-07-01 10:26
脂肪组织是人体的主要能量储库,甘油三酯贮存在细胞内脂滴(lipid droplets, LDs)中,越来越多的研究表明脂滴是细胞内代谢活跃的细胞器。本研究旨在探讨forskolin长时间刺激脂肪分解过程中脂滴形态和脂滴表面perilipin家族蛋白的改变。以Sprague-Dawley (SD)大鼠附睾脂肪垫来源的分化脂肪细胞为研究对象,给予1μmol/L forskolin慢性刺激24 h,采用比色方法测定培养基中甘油的浓度;采用尼罗红染色观察细胞内脂滴形态的变化;采用荧光定量PCR检测perilipin家族蛋白mRNA水平的改变;采用免疫印迹和免疫荧光染色观察蛋白水平以及蛋白的亚细胞定位。结果表明,1μmol/L forskolin孵育24 h可以持续刺激脂肪分解。伴随着脂肪分解的进行,细胞内脂滴形态逐渐发生改变,细胞内聚集存在的大脂滴逐渐减少,位于细胞周边的小脂滴逐渐增加,最终细胞内大脂滴全部消失,取而代之的是在细胞质中弥散存在的微小脂滴。在脂肪分解过程中,perilipin家族蛋白水平也发生明显变化。分化成熟的脂肪细胞几乎没有Plin2蛋白表达,而forskolin慢性刺激可以...
【文章页数】:9 页
【文章目录】:
1 MATERIALS AND METHODS
1.1 Cell culture and treatment
1.2 Immunoblotting
1.3 Immunofluorescence staining
1.4 Evaluation of lipolysis by glycerol assay
1.5 Quantitative real-time PCR
1.6 LDs staining with Nile red
1.7 Statistics analysis
2 RESULTS
2.1 Forskolin induced sustained lipolysis in differ-entiated adipocytes
2.2 Morphological changes of LDs during sustained stimulation of forskolin
2.3 The mRNA levels of Plin family proteins weredifferentially regulated during sustained stimulation of forskolin
2.4 Forskolin increased the protein level of Plin2 in a time-dependent manner
2.5 Plin2 co-localized with Plin1 on LDs in forskolin-treated adipocytes
3 DIScUSSION
【参考文献】:
期刊论文
[1]肿瘤坏死因子-α上调大鼠分化脂肪细胞脂肪分化相关蛋白水平及其机制[J]. 刘梅芳,俎鲁霞,徐冲,蒲申申,徐国恒. 北京大学学报(医学版). 2008(06)
本文编号:3654068
【文章页数】:9 页
【文章目录】:
1 MATERIALS AND METHODS
1.1 Cell culture and treatment
1.2 Immunoblotting
1.3 Immunofluorescence staining
1.4 Evaluation of lipolysis by glycerol assay
1.5 Quantitative real-time PCR
1.6 LDs staining with Nile red
1.7 Statistics analysis
2 RESULTS
2.1 Forskolin induced sustained lipolysis in differ-entiated adipocytes
2.2 Morphological changes of LDs during sustained stimulation of forskolin
2.3 The mRNA levels of Plin family proteins weredifferentially regulated during sustained stimulation of forskolin
2.4 Forskolin increased the protein level of Plin2 in a time-dependent manner
2.5 Plin2 co-localized with Plin1 on LDs in forskolin-treated adipocytes
3 DIScUSSION
【参考文献】:
期刊论文
[1]肿瘤坏死因子-α上调大鼠分化脂肪细胞脂肪分化相关蛋白水平及其机制[J]. 刘梅芳,俎鲁霞,徐冲,蒲申申,徐国恒. 北京大学学报(医学版). 2008(06)
本文编号:3654068
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