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脂肪细胞的基本研究方法

时间:2022-04-08 理论教育 版权反馈
【摘要】:目前脂肪细胞的培养技术已较成熟,尤其是脂肪源性干细胞的分离培养与定向诱导分化的研究是目前研究的一大热点。具体脂肪源性干细胞分离培养方法为:用缓冲液反复冲洗脂肪组织,剪刀剪碎,0.075%的胶原酶,37℃消化30~50min,800g离心10min,沉淀成分为基质血管层,DMEM培养基重悬细胞,筛网过滤离心,弃上清。

目前脂肪细胞的培养技术已较成熟,尤其是脂肪源性干细胞的分离培养与定向诱导分化的研究是目前研究的一大热点。具体脂肪源性干细胞分离培养方法为:用缓冲液反复冲洗脂肪组织,剪刀剪碎,0.075%的胶原酶,37℃消化30~50min,800g离心10min,沉淀成分为基质血管层(SVF),DMEM培养基重悬细胞,筛网过滤离心,弃上清。用培养基重悬细胞,细胞种植在培养板或培养皿中,24h后倒掉原来的培养液,去除未贴壁的红细胞和残渣,剩余的贴壁细胞群体称为加工过脂肪吸取物(processedlipoaspirate,PLA)。切除的脂肪组织获得的SVF中含有非常复杂的细胞成分,包括内皮细胞、平滑肌细胞、血管周细胞、Fb、前脂肪细胞和分化潜能确定的其他前体细胞,因此PLA中含有以上的细胞成分和假想的多能干细胞成分。原代培养贴壁的细胞较少,细胞生长至融合时传代;传代以后的细胞称为ADSCs。传代时,以0.25%胰蛋白酶、1mmol/L EDTA,于37℃下消化细胞3~4min,按1∶2~1∶3比例传代,2~3d半量换液一次,300ml脂肪组织可得到(2~6)×108个PLA细胞,其在体外的生长状态类似Fb和MSCs。

(伍津津)

参 考 文 献

[1]Mauney JR,Volloch V,Kaplan DL.Matrix-ediated retention of adipogenic diferentition potential by human adult bone marrow derived mesenchymal stem cells during exvivo expansion.Biomaterials,2005,26(31):6167

[2]Rodriguez AM,Elabd C,Delteil F,et al.Adipocyte differentiation of multipotent cells established from human adipose tissue.Biochem Biophys Res Commun,2004,315(2):255

[3]Zhang JW,Klemm DJ,Vinson C,et al.Role of CREB in transcriptional regulation of CCAAT/enhancer-binding protein beta gene during adipogengsis.J Biol Chem,2004,279(6):4471

[4]Ferre P.The biology of Peroxisome proliferators-activared receptors:relationsip with lipid metabolism and insulin sensitivity.Diabetes,2004,53(suppl 1):s43

[5]Matsuzawa Y.Adipocytokines and metabolic syndrome.Semin Vasc Med,2005,5:34

[6]李青,马钰.脂肪组织功能新发现.中华病理学杂志,2006,35(6):363

[7]Yang R,Xu A,Pray J,et al.Cloning of omentin,a newadipocytokine from omental fat tissue in human.Diabetes,2005,52(Suppl 1):A1

[8]Fukuhara A,Mat suda M,Nishizawa M,et al.Visfatin:aprotein secreted by visceral fat that mimics the effects of insulin.Science,2005,307:426

[9]徐伟斌,俞璐,罗敏.内脏素又一新的脂肪因子.中国糖尿病杂志,2006,14(2):153

[10]Safford KM,Rice HE.Stem cell therapy for neurologic disorders:therapeutic potential of adipose-derived stem cells.Curr Drug Targets,2005,6:57

[11]Lappas M,Permezel M,Rice GE.Leptin and adiponectin stimulate the release of proinflammatory cytokines and prostaglandins from human placenta and maternal adipose tissue via nuclear factor-kappaB,peroxisomal proliferator-activated receptor-gamma and extracellularly regulated kinase 1/2.Endocrinology,2005,146:3334

[12]Yang LY,Liu XM,Sun B,et al.Adipose tissue-derived stromal cells express the phenotypes of neurons.Chin Med J,2004,117(3):425

[13]Kang SK,Putnam LA,Ylostalo J,et al.Neurogenesis of Rhesus adipose stromal cells.J Cell Science,2004,117(22):4289

[14]Safford KM,Safford SD,Gimble JM,et al.Characterization of neuronal/glial differentiation of murine adipose-derived adult stromal cells.Exp Neurol,2004,187(2):319

[15]Planat-Benard V,Silvestre JS,Cousin B,et al.Plasticity of human adipose lineage cells toward endothelial cells:physiological and therapeutic perspectives.Circulation,2004,109(5):656

[16]Miranville A,Heeschen C,Sengenes C,et al.Improvement of postnatal neovascularization by human adipose tissue-derived stem cells.Circulation,2004,110(3):349

[17]Rehman J,Traktuev D,Li J,et al.Secretion of angiogenic and antiapoptotic factors by human adipose stromal cells.Circulation,2004,109(10):1292

[18]Gaustad KG,Boquest AC,Anderson BE,et al.Differentiation of human adipose tissue stem cells using extracts of rat cardiomyocytes.Biochem Biophys Res Commun,2004,314(2):420

[19]Dezawa M,Kanno H,Hoshino M,et al.Specific induction of neuronal cells from bone marrow stromal cells and application for autologous transplantation.J Clin Invest,2004,113(12):1701

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