中国组织工程研究
中國組織工程研究
중국조직공정연구
Journal of Clinical Rehabilitative Tissue Engineering Research
2014年
1期
14-20
,共7页
郭增%李从圣%解杨婧%王春苗%程景林%王爱玲
郭增%李從聖%解楊婧%王春苗%程景林%王愛玲
곽증%리종골%해양청%왕춘묘%정경림%왕애령
干细胞%骨髓干细胞%骨髓间充质干细胞%缺氧/无血清%细胞凋亡%硫化氢%内源性硫化氢%胱硫醚-γ-裂解酶%3-巯基丙酮酸硫基转移酶
榦細胞%骨髓榦細胞%骨髓間充質榦細胞%缺氧/無血清%細胞凋亡%硫化氫%內源性硫化氫%胱硫醚-γ-裂解酶%3-巰基丙酮痠硫基轉移酶
간세포%골수간세포%골수간충질간세포%결양/무혈청%세포조망%류화경%내원성류화경%광류미-γ-렬해매%3-구기병동산류기전이매
stem cells%bone marrow%mesenchymal stem cells%anoxia%culture media,serum-free%hydrogen sulfide%apoptosis
背景:大鼠骨髓间充干细胞移植后的低存活率多与缺血微环境相关,而硫化氢可以对抗多种细胞与组织的凋亡和损伤模型。<br> 目的:检测大鼠骨髓间充质干细胞在不同缺氧和无血清培养时间后的细胞凋亡、细胞活力、硫化氢含量及其合成酶体系的变化情况。<br> 方法:取第3代大鼠骨髓间充质干细胞,设立5个(0,3,6,12和24 h)不同的缺氧和无血清培养时间点。用SubG1法检测细胞的凋亡率,用CCK-8法检测细胞的活力,并检测细胞培养基中硫化氢的含量以及细胞中硫化氢合成酶体系的表达变化情况。<br> 结果与结论:与正常培养组相比,缺氧和无血清培养不同时间后,细胞的凋亡率显著增高,细胞活力明显下降。缺氧和无血清时间越长,细胞凋亡越多,活力越低,并且细胞培养基中硫化氢含量和细胞中硫化氢合成酶体系的表达也越低,差异有显著性意义。表明缺氧和无血清培养可以抑制大鼠骨髓间充质干细胞中硫化氢及其合成酶体系的生成和表达。
揹景:大鼠骨髓間充榦細胞移植後的低存活率多與缺血微環境相關,而硫化氫可以對抗多種細胞與組織的凋亡和損傷模型。<br> 目的:檢測大鼠骨髓間充質榦細胞在不同缺氧和無血清培養時間後的細胞凋亡、細胞活力、硫化氫含量及其閤成酶體繫的變化情況。<br> 方法:取第3代大鼠骨髓間充質榦細胞,設立5箇(0,3,6,12和24 h)不同的缺氧和無血清培養時間點。用SubG1法檢測細胞的凋亡率,用CCK-8法檢測細胞的活力,併檢測細胞培養基中硫化氫的含量以及細胞中硫化氫閤成酶體繫的錶達變化情況。<br> 結果與結論:與正常培養組相比,缺氧和無血清培養不同時間後,細胞的凋亡率顯著增高,細胞活力明顯下降。缺氧和無血清時間越長,細胞凋亡越多,活力越低,併且細胞培養基中硫化氫含量和細胞中硫化氫閤成酶體繫的錶達也越低,差異有顯著性意義。錶明缺氧和無血清培養可以抑製大鼠骨髓間充質榦細胞中硫化氫及其閤成酶體繫的生成和錶達。
배경:대서골수간충간세포이식후적저존활솔다여결혈미배경상관,이류화경가이대항다충세포여조직적조망화손상모형。<br> 목적:검측대서골수간충질간세포재불동결양화무혈청배양시간후적세포조망、세포활력、류화경함량급기합성매체계적변화정황。<br> 방법:취제3대대서골수간충질간세포,설립5개(0,3,6,12화24 h)불동적결양화무혈청배양시간점。용SubG1법검측세포적조망솔,용CCK-8법검측세포적활력,병검측세포배양기중류화경적함량이급세포중류화경합성매체계적표체변화정황。<br> 결과여결론:여정상배양조상비,결양화무혈청배양불동시간후,세포적조망솔현저증고,세포활력명현하강。결양화무혈청시간월장,세포조망월다,활력월저,병차세포배양기중류화경함량화세포중류화경합성매체계적표체야월저,차이유현저성의의。표명결양화무혈청배양가이억제대서골수간충질간세포중류화경급기합성매체계적생성화표체。
BACKGROUND:Ischemia microenvironment contributes mostly to the low survival rate of rat bone marrow mesenchymal stem cells after transplantation. Hydrogen sulfide (H2S) can protect various cells and tissue models against apoptosis and injury. <br> OBJECTIVE:To detect the cellapoptosis and viability, content of H2S in supernatant, and the expression of H2S synthetase after different time of hypoxia and serum deprivation cultivation of rat bone marrow mesenchymal stem cells. <br> METHODS:The passage 3 rat bone marrow mesenchymal stem cells were divided into five different cultivation time groups:0-, 3-, 6-, 12-and 24-hour groups. After enough hypoxia and serum deprivation cultivated time, the cellapoptosis was detected by SubG1, the cellviability was determined by cellcounting kit-8, the content of H 2S in supernatant was measured by N,N-dimethyl-p-phenylenediamin and the expression of H2S synthetase by RT-PCR and western blot. <br> RESULTS AND CONCLUSION:Compared to the normal cultivation group, after different hypoxia and serum deprivation cultivated time, the cellapoptosis increased and cellviability decreased significantly. The longer hypoxia and serum deprivation cultivated time caused the more cellapoptosis and the lower cellviability. The contents of H2S and its synthetase were also suppressed by hypoxia and serum deprivation cultivation. The difference was statistical y significant. These findings suggest that hypoxia and serum deprivation cultivation can inhibit the generation of H 2 expression of its synthetase.