黄连素抑制FSP27基因表达及改善T2DM地鼠内脏白色脂肪组织胰岛素抵抗的研究

目的研究黄连素(BBR)对2型糖尿病(T2DM)中国地鼠内脏白色脂肪组织(VWAT)中脂肪特异蛋白27(FSP27)和PR结构域蛋白16(PRDM16)信号通路基因m RNA表达的影响并探讨相关机制。方法以高脂饮食诱导肥胖胰岛素抵抗(OIR)地鼠模型,然后给予小剂量链脲佐菌素建立T2DM地鼠模型,对照组喂以普通饲料。造模完成后随机分成对照组、OIR组、肥胖T2DM组和T2DM BBR组。BBR治疗9周后,应用实时定量PCR方法检测各组地鼠VWAT中FSP27和PRDM16信号通路及其靶基因的m RNA表达改变。结果与对照组相比,OIR组和肥胖T2DM组地鼠VWAT中PRDM16、Ct BP-1...

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Published in天津医药 Vol. 44; no. 3; pp. 330 - 335
Main Author 李国生 刘栩晗 李欣宇 高政南 黄澜 刘亚莉
Format Journal Article
LanguageChinese
Published 大连医科大学附属第一医院病理科 邮编116011%大连医科大学附属大连市中心医院内分泌科 2016
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Summary:目的研究黄连素(BBR)对2型糖尿病(T2DM)中国地鼠内脏白色脂肪组织(VWAT)中脂肪特异蛋白27(FSP27)和PR结构域蛋白16(PRDM16)信号通路基因m RNA表达的影响并探讨相关机制。方法以高脂饮食诱导肥胖胰岛素抵抗(OIR)地鼠模型,然后给予小剂量链脲佐菌素建立T2DM地鼠模型,对照组喂以普通饲料。造模完成后随机分成对照组、OIR组、肥胖T2DM组和T2DM BBR组。BBR治疗9周后,应用实时定量PCR方法检测各组地鼠VWAT中FSP27和PRDM16信号通路及其靶基因的m RNA表达改变。结果与对照组相比,OIR组和肥胖T2DM组地鼠VWAT中PRDM16、Ct BP-1、Ct BP-2、C/EBPβ、PPARγ、PGC1α、PGC-1β及棕脂组织特异基因UCP-1、Cidea、Elovl3、PPARα及Acox、Cpt1和Acadm的m RNA表达降低,而FSP27和白脂组织特异基因Resistin、MEST和Serpina3k的m RNA表达增加。BBR治疗降低肥胖T2DM组地鼠VWAT中FSP27的表达而增强PRDM16信号通路效应,诱导棕脂组织特异基因m RNA的表达,诱导VWAT棕色化基因表型,改善脂诱性胰岛素抵抗。结论 BBR降低FSP27表达而增加PRDM16的表达与其诱导VWAT棕色化的分子机制相关,有助于增强产热耗能,改善VWAT的异常脂代谢,改善脂诱性VWAT胰岛素抵抗,恢复VWAT的功能。
Bibliography:Objective To study the effects of berberine(BBR) on the gene m RNA expression of fat-specific protein 27(FSP27) and PR domain containing 16(PRDM16) signal pathway in visceral white adipose tissues(VWAT) from type 2 diabetic(T2DM) Chinese hamsters, and explore the related mechanisms. Methods The obese insulin-resistant(OIR) hamstermodel was induced by high-fat diet, and T2DM hamster model was created by OIR hamster model injected with low-dosestreptozotocin. The control group was fed with standard laboratory chow. After the induction, the hamsters were randomly di-vided into control, OIR, obese T2DM and BBR-treated T2DM groups. After nine-week BBR treatment, real-time quantita-tive PCR was used to measure the gene m RNA expression changes of VWAT FSP27 and PRDM16 signal pathway and theirtarget genes from different groups. Results Compared with control group, the gene m RNA expressions of PRDM16, Ct BP-1, Ct BP-2, C/EBPβ, PPARγ, PGC1α, PGC-1β and brown adipose tissue-specific genes such as UCP-1, Cidea, Elovl3,
ISSN:0253-9896
DOI:10.11958/20150041