title: The stromal-vascular fraction of adipose tissue contributes to major differences between subcutaneous and visceral fat depots.
abstract: Adipose tissue represents a complex tissue both in terms of its cellular composition, as it includes mature adipocytes and the various cell types comprising the stromal-vascular fraction (SVF), and in relation to the distinct biochemical, morphological and functional characteristics according to its anatomical location. Herein, we have characterized the proteomic profile of both mature adipocyte and SVF from human visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) fat depots in order to unveil differences in the expression of proteins which may underlie the distinct association of VAT and SAT to several pathologies. Specifically, 24 proteins were observed to be differentially expressed between SAT SVF versus VAT SVF from lean individuals. Immunoblotting and RT-PCR analysis confirmed the differential regulation of the nuclear envelope proteins lamin A/C, the membrane-cytoskeletal linker ezrin and the enzyme involved in retinoic acid production, aldehyde dehydrogenase 1A2, in the two fat depots. In sum, the observation that proteins with important cell functions are differentially distributed between VAT and SAT and their characterization as components of SVF or mature adipocytes pave the way for future research on the molecular basis underlying diverse adipose tissue-related pathologies such as metabolic syndrome or lipodystrophy.
authors: Department of Cell Biology, Physiology and Immunology, University of Córdoba, Spain.
authors: Juan R
authors: JR
authors: Peinado
authors: Yolanda
authors: Y
authors: Jimenez-Gomez
authors: Marina R
authors: MR
authors: Pulido
authors: Maria
authors: M
authors: Ortega-Bellido
authors: Cesar
authors: C
authors: Diaz-Lopez
authors: Francisco J
authors: FJ
authors: Padillo
authors: Jose
authors: J
authors: Lopez-Miranda
authors: Rafael
authors: R
authors: Vazquez-Martínez
authors: María M
authors: MM
authors: Malagón
mesh_terms: D000368:Aged; D005786:Gene Expression Regulation; D006801:Humans; D050152:Intra-Abdominal Fat / Q000737:chemistry* / Q000378:metabolism; D008875:Middle Aged; D012333:RNA, Messenger / Q000235:genetics; D050507:Subcutaneous Fat, Abdominal / Q000737:chemistry* / Q000378:metabolism
chemical_list: D012333:RNA, Messenger