人臍帶非酶解法培養(yǎng)MSCs的方法建立
本文選題:間充質(zhì)干細(xì)胞 + 人臍帶 ; 參考:《中國(guó)輸血雜志》2017年08期
【摘要】:目的建立從人臍帶Wharton's jelly組織中直接培養(yǎng)間充質(zhì)干細(xì)胞(MSCs)的方法。方法將人臍帶切成5 cm左右的片段,縱向剖開,剔除血管,把富含Wharton's jelly組織的臍帶面置于10 cm2塑料培養(yǎng)皿的培養(yǎng)面上,加入含20%FBS的LG-DMEM培養(yǎng)基連續(xù)培養(yǎng)10 d;移去臍帶組織后,培養(yǎng)皿中的細(xì)胞繼續(xù)培養(yǎng)至80%-90%融合。傳代和擴(kuò)增3代(次)后,以倒置光學(xué)顯微鏡觀察細(xì)胞形態(tài),流式細(xì)胞儀檢測(cè)細(xì)胞免疫表型及細(xì)胞周期,用含有成骨細(xì)胞誘導(dǎo)劑、脂肪細(xì)胞誘導(dǎo)劑對(duì)傳代培養(yǎng)至第3代的細(xì)胞分別定向誘導(dǎo)分化為成骨細(xì)胞、脂肪細(xì)胞,并對(duì)誘導(dǎo)后細(xì)胞用堿性磷酸酶檢測(cè)試劑、Von-Kossa染色檢測(cè)試劑和茜蘇紅染色試劑作細(xì)胞生物學(xué)檢測(cè)。結(jié)果臍帶組織在貼壁培養(yǎng)5 d,組織周圍可見有少量細(xì)胞貼壁生長(zhǎng),主要呈"成纖維樣",形狀不規(guī)則,移去臍帶組織后繼續(xù)培養(yǎng)至14-15 d時(shí),細(xì)胞達(dá)到80%-90%匯合;細(xì)胞表面表達(dá)CD73、CD105、CD90、CD44、CD29、CD71及CD13,不表達(dá)CD34、CD14、CD133、CD45、HLA-DR;培養(yǎng)至第4代時(shí)約72.724%的細(xì)胞處在G1期,S期細(xì)胞占18.069%,第6代時(shí),G1期細(xì)胞約為83.875%、S期細(xì)胞僅為9.606%左右。細(xì)胞經(jīng)成骨細(xì)胞誘導(dǎo)分化后,堿性磷酸酶染色顯示呈強(qiáng)陽(yáng)性,茜蘇紅染色和Von-Kossa染色顯示細(xì)胞有鈣鹽沉積并形成鈣結(jié)節(jié);細(xì)胞經(jīng)成脂細(xì)胞誘導(dǎo)分化后,油紅O染色呈紅色,顯示胞漿內(nèi)有大量甘油三酯的聚集。結(jié)論采用非酶解法從人臍帶Wharton's jelly中分離及培養(yǎng)擴(kuò)增的細(xì)胞具備MSCs的基本特性,具有分化為成骨細(xì)胞和脂肪細(xì)胞的能力。
[Abstract]:Objective to establish a direct culture method of mesenchymal stem cells (MSCs) from human umbilical cord Wharton's jelly tissue. Methods the human umbilical cord was cut into about 5 cm segment, cut out longitudinally, removed the blood vessels, placed the cord surface rich in Wharton's jelly tissue on the culture surface of 10 cm2 plastic petri dish, added 20s LG-DMEM medium for 10 days, and removed the umbilical cord tissue for 10 days. The cells in the dish continued to grow to 80-90% fusion. Cell morphology was observed by inverted optical microscope, immunophenotype and cell cycle were detected by flow cytometry and osteoblast inducer was used. Adipocytes were induced to differentiate into osteoblasts and adipocytes respectively. After induction, the cells were detected by Von-Kossa staining reagent and hematoxylin staining reagent by alkaline phosphatase assay. Results after 5 days of culture, there were a few cells around the cord tissue, mainly "fibroblast" and irregular shape. When the umbilical cord tissue was removed and cultured for 14-15 days, the cells converged to 80-90%. The cell surface expressed CD73T, CD105CD90, CD44, CD29, CD71 and CD13, and did not express CD34, CD14, CD133, CD45 and HLA-DR.At the fourth passage, about 72.724% of the cells were in the G 1 phase of S phase, and the number of cells in the G 1 phase was about 9.606% in the sixth generation. After differentiation induced by osteoblasts, alkaline phosphatase staining showed strong positive, hematoxylin staining and Von-Kossa staining showed that the cells had calcium salt deposition and formed calcium nodules, oil red O staining was red after differentiation induced by adipogenic cells. There is a large accumulation of triglycerides in the cytoplasm. Conclusion the cells isolated and cultured from human umbilical cord Wharton's jelly by non-enzymatic hydrolysis have the basic characteristics of MSCs and the ability to differentiate into osteoblasts and adipocytes.
【作者單位】: 安徽省血液中心;解放軍第105醫(yī)院;Global
【基金】:合肥市衛(wèi)生計(jì)生委2016年應(yīng)用醫(yī)學(xué)研究項(xiàng)目(hwk2016zc020)
【分類號(hào)】:R329.2
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