Deletion of Cavin/PTRF causes global loss of caveolae, dyslipidemia, and glucose intolerance.
Deletion of Cavin/PTRF causes global loss of caveolae, dyslipidemia, and glucose intolerance.
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DOI:
10.1016/j.cmet.2008.07.008
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发表时间:
2008-10
期刊:
影响因子:
29
通讯作者:
Pilch PF
中科院分区:
文献类型:
--
作者:
Liu L;Brown D;McKee M;Lebrasseur NK;Yang D;Albrecht KH;Ravid K;Pilch PF
Caveolae are specialized invaginations of the plasma membrane found in numerous cell types. They have been implicated as playing a role in a variety of physiological processes and are typically characterized by their association with the caveolin family of proteins. We show here by means of targeted gene disruption in mice, that a distinct caveolae-associated protein, Cavin/PTRF, is an essential component of caveolae. Animals lacking Cavin have no morphologically detectable caveolae in any cell type examined and have markedly diminished protein expression of all three caveolin isoforms whilst retaining normal or above normal caveolin mRNA expression. Cavin knockout mice are viable and of normal weight but have higher circulating triglyceride levels, significantly reduced adipose tissue mass, glucose intolerance and hyperinsulinemia, which characteristics constitute a lipodystrophic phenotype. Our results underscore the multi-organ role of caveolae in metabolic regulation and the obligate presence of Cavin for caveolae formation.
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