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- 2017
冷驯化对中缅树鼩PPARα、COXⅡ及PGC-1α基因表达量的影响
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Abstract:
中文摘要:为了研究冷驯化条件下中缅树鼩 Tupaia belangeri的脂肪组织是否会转化,本研究测定了冷驯化条件下中缅树鼩脂肪组织质量,脂肪转化因子过氧化物酶体增殖激活受体α(PPARα)、环氧化酶-2(COXⅡ)及过氧化物酶体增殖物受体γ共激活因子1α(PGC-1α)基因表达量的变化。结果表明:中缅树鼩冷驯化组无论是褐色脂肪组织(BAT)质量,还是大网膜白色脂肪组织(WAT)质量均较对照组显著增加( P<0.01),脂肪转化因子PPARα、COXⅡ及PGC-1α基因表达量也显著上调( P<0.01)。以上结果说明中缅树鼩WAT中PPARα、COXⅡ、PGC-1α基因表达量的增加可能诱导了WAT细胞褐变,进而向BAT细胞转化和提高BAT中解偶联蛋白1的表达。
英文摘要:In order to investigate whether the adipose tissue of Tupaia belangeri would be transformed under cold acclimation, the mass of adipose tissue, changes of peroxisome proliferator-activated receptor α (PPARα), cyclooxygenase-2 (COXⅡ) and peroxisome proliferators-activated receptor-γ coactivator-1 (PGC-1α) genes were measured in the present study. The results showed that mass of brown adipose tissue and omental white adipose tissue, the mRNA expressions of PPARα, COXⅡ and PGC-1α genes were increased extreme significantly under cold exposure compared with control ( P<0.01). And these indicated that the increased expressions of PPARα, COXⅡ and PGC-1α genes under cold condition may cause the transformation of white adipose tissue to browning beige adipocyte, which then transformed to brown adipose tissue and increase the level of uncoupling protein 1 in brown adipose tissue. 2017,36(1): 34-38 收稿日期:2016-08-31 DOI:10.11984/j.issn.1000-7083.20160232 分类号:Q95-33 基金项目:国家自然科学基金项目(31660121);联合支持国家计划项目(2015GA008);云南省科技计划重点项目(2016FA045) 作者简介:侯东敏(1992-),男,硕士研究生,研究方向:动物生理生态,E-mail:houl92@163.com *通讯作者:朱万龙,男,副教授,主要从事动物生理生态研究,E-mail:zwl_8307@163.com 参考文献: 王政昆, 李庆芬, 孙儒泳. 1995. 中缅树鼩的非颤抖性产热及细胞呼吸特征[J]. 动物学研究, 16(3):408-414. 王政昆, 李庆芬, 孙儒泳. 1999. 光周期和温度对中缅树鼩产热能力的影响[J]. 动物学报, 45(3):287-293. 王政昆, 孙儒泳, 李庆芬. 1994. 中缅树鼩静止代谢率的研究[J]. 北京师范大学学报(自然科学版), 30(3):408-414. 张武先, 王政昆, 徐伟江. 2002. 冷驯化对中缅树鼩能量代谢的影响[J]. 兽类学报, 22(2):123-129. 章迪, 张浩, 朱万龙. 2014. 中缅树鼩PRDM16、BMP7、PPARα、COXⅡ及PGC-1α基因的扩增研究[J]. 生物过程, 4(3):52-60. 朱万龙, 蔡金红, 张麟, 等. 2014. 中缅树鼩体质量、血清瘦素和下丘脑神经肽表达量的季节性变化[J]. 生物学杂志, 31(3):33-37. 朱万龙, 王海, 贾婷, 等. 2008. 冷驯化对大绒鼠和高山姬鼠肝脏线粒体呼吸的影响[J]. 四川动物, 27(3):371-377. Barbera MJ, Schluter A, Pedraza N, et al. 2001. Peroxisome proliferator-activated receptor alpha activates transcription of the brown fat uncoupling protein-1 gene:a link between regulation of the thermogenic and lipid oxidation pathways in the brown fat cell[J]. Journal of Biological Chemistry, 276(2):1486-1493. Birerdinc A, Jarrar M, Stotish T, et al. 2013. Manipulating molecular switches in brown adipocytes and their precursors:a therapeutic potential[J]. Progress in Lipid Research, 52(1):51-61. Crott JW, Liu Z, Choi SW, et al. 2007. Folate depletion in human lymphocytes up-regulates