脂肪间充质干细胞相关分化与炎症相关.ppt
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1、脂肪间充质干细胞相关分化与炎症相关目录脂肪间充质干细胞分离、培养和鉴定脂肪间充质干细胞骨关节炎和肥胖脂肪间充质干细胞分化与炎症脂肪间充质干细胞(ASCs).Adipose tissue is recognized as a complex endocrine organ that plays central roles in energy homeostasis,feeding,insulin sensitivity,and inflammation.Adipose tissue contains different cell types besides adipocytes,includin
2、g adipose-derived stromal cells(ASCs).ASCs were first reported by Frohlich in 1972,as adherent,proliferating adipocyte precursors.Different names have been used to describe the adherent cell population that can be expanded from lipoaspirates,e.g.lipoblast,pericytes,preadipocytes,processed lipoaspira
3、tes(PLA)cells,and many others.Several works demonstrated the stem cell-like plasticity of ASCs and their capability of differentiating into cells of mesodermal origin,such as adipocyte,osteocyte,chondrocyte and myocyte lineages.Zuk PA,etc.Human adipose tissue is a source of multipotent stem cells.Mo
4、l Biol Cell 2002;13:4279-4295PLAorSVF(stromal vascular fraction)To clarify nomenclature,the International Fat Applied Technology Society(IFATS)proposed to name ASCs the isolated,plastic-adherent,multipotent cell population obtained from adipose tissue through different methodsSubcutaneous fat is an
5、abundant and accessible source of both heterogeneous stromal vascular fraction(SVF)cells and a small number of relatively homogeneous ASCs.SVF cells include vascular endothelial cells and their progenitors,smooth muscle cells,immune regulatory monocytes/macrophages and T regulatory cells.Caspar-Baug
6、uil,S.,et al.,Adipose tissue lymphocytes:types and roles.J Physiol Biochem,2009.65(4):p.423-36.Similarly to bone marrow mesenchymal stromal cells(BMSCs),ASCs were identifiedin vivo as cells with perivascular localization,in close contact with the other cell types.Like other MSC types,ASCs cannot be
7、identified by a single specific marker,but multiple marker combinations are needed for the identification of the cell population.ASCs express the surface markers used for BMSC characterization,with some peculiarities.BMSCs express CD106 that is not or slightly expressed by ASCs;by contrast,BM-MSCs l
8、ack the expression of CD49d,which is expressed by ASCs.Following ex vivo expansion,some markers are normally expressed by ASCs,such as CD13,CD29,CD34,CD54,CD73,CD90,CD105 and MHC I.By contrast,markers of the angiogenic and haematopoietic lineages,such as CD14,CD31,CD133,MHC II and CD45,are not or po
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- 关 键 词:
- 脂肪 间充质 干细胞 相关 分化 炎症
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