單克隆抗體ZUC3免疫磁珠分選人骨髓間充質(zhì)干細(xì)胞的方法研究
本文關(guān)鍵詞:單克隆抗體ZUC3免疫磁珠分選人骨髓間充質(zhì)干細(xì)胞的方法研究 出處:《浙江大學(xué)》2006年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 骨髓 間充質(zhì)干細(xì)胞 單克隆抗體 免疫磁珠
【摘要】:骨髓間充質(zhì)干細(xì)胞(Mesenchymal Stem Cells,MSCs)是骨髓組織中除造血干細(xì)胞外的一種非造血組織的成體干細(xì)胞。MSCs具有自我更新、高度增殖及多向分化的能力,在一定的體內(nèi)或體外誘導(dǎo)條件下可以分化為各個胚層的細(xì)胞,如脂肪細(xì)胞、軟骨細(xì)胞、成骨細(xì)胞、肌腱細(xì)胞、肌肉細(xì)胞、神經(jīng)元細(xì)胞、上皮細(xì)胞等。由于MSCs具有多向分化能力并易于在體外培養(yǎng)、擴(kuò)增,且MSCs免疫原性弱、不表達(dá)MHC-Ⅱ類分子和T細(xì)胞共刺激分子,使異基因MSCs的應(yīng)用成為可能,而使之成為細(xì)胞治療和組織工程的研究熱點。但正常人骨髓中MSCs含量極低,約10~4~10~5個單個核細(xì)胞中含有一個MSC,為得到足夠數(shù)量MSCs應(yīng)用于臨床,需建立高效的體外純化、培養(yǎng)和擴(kuò)增體系。通過傳統(tǒng)的貼壁培養(yǎng)的方法獲得的原代人骨髓MSCs耗時長、細(xì)胞的異質(zhì)性大,這使MSCs的基礎(chǔ)研究及臨床應(yīng)用的推廣受到限制。以細(xì)胞表面特異性表型為標(biāo)記,通過免疫分選的方法,可以有效地富集骨髓中含量極少的MSCs,提高原代培養(yǎng)所得的MSCs純度,以推動MSCs的應(yīng)用研究。目前人骨髓MSCs公認(rèn)的表型特征:CD29、CD44、CD73、CD90、CD105、CD166呈陽性,不表達(dá)造血干細(xì)胞的標(biāo)志性抗原,CD14、CD34、CD45、HLA-DR、血型糖蛋白A(GlycophorinA)及T或B淋巴細(xì)胞的表面標(biāo)記均為陰性。迄今為止,人們對MSCs
[Abstract]:Bone marrow mesenchymal stem cells (Mesenchymal Stem Cells, MSCs) are adult stem cells of non hematopoietic tissue except hematopoietic stem cells in bone marrow. MSCs has the ability of self-renewal, high proliferation and multilineage differentiation, differentiation of various layers of cells could be induced in vivo or in vitro under certain conditions, such as adipocytes, chondrocytes, osteoblasts, tendon cells, muscle cells, neuronal cells and epithelial cells. Because MSCs has the ability of multi-directional differentiation and is easy to culture and amplify in vitro, and the immunogenicity of MSCs is not strong, it doesn't express MHC- class II molecules and T cell costimulatory molecules, making the application of allogenic MSCs possible, and making it a research hotspot of cell therapy and tissue engineering. However, the MSCs content in bone marrow of normal persons is very low, which is about 10~4 ~ 10~5. There is a MSC in each mononuclear cell. In order to get enough quantity of MSCs for clinical application, we need to establish an efficient system for purification, culture and amplification in vitro. The primary human bone marrow MSCs obtained by traditional adherence culture is time-consuming and heterogeneous, which makes the promotion of basic research and clinical application of MSCs limited. Using cell surface specific phenotype as marker, immune sorting method can effectively enrich MSCs content in bone marrow and increase MSCs purity in primary culture, so as to promote the application of MSCs. At present, the MSCs phenotypes of human bone marrow are positive: CD29, CD44, CD73, CD90, CD105 and CD166 are positive. They do not express the marked antigens of hematopoietic stem cells. CD14, CD34, CD45, HLA-DR, blood group glycoprotein (CD90) and surface markers of lymphocytes or lymphocytes are negative. So far, people have been to MSCs
【學(xué)位授予單位】:浙江大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2006
【分類號】:R329.2
【共引文獻(xiàn)】
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