铁蓄积环境对大鼠骨髓间充质干细胞增殖及成骨分化的影响  被引量:2

Effect of excess iron culturing on the proliferation and osteogenic differentiation of rat bone mesen-chymal stem ceils

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作  者:俞晨[1] 杨帆[1] 李健[4] 陈斌[1] 袁晔[1] 高焱[1] 李勇[2] 费蓓蓓[3] 徐又佳[1] 彭笳宸 Yu Chen;Yang Fan;Li Jian;Chen Bin;Yuan Ye;Gao Yan;Li Yong;Fei Beibei;Xu Youfia;Peng Jiachen(Department of Orthopaedics, the Second Affiliated Hospital of Soochow University, Suzhou 215000, China;Department of Radiology, the Second Affili- ated Hospital of Soochow University, Suzhou 215000, China;Department of Obstetrics and Gynecolo- gy, the Second Affiliated Hospital of Soochow University, Suzhou 215000, Chin;Center.for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen 518055, Chin;Department of Joint Surgery, the Affiliated Hospital of Zunyi Medical College, Zunyi 563003, China)

机构地区:[1]苏州大学附属第二医院骨科,215004 [2]苏州大学附属第二医院放射科,215004 [3]苏州大学附属第二医院妇产科,215004 [4]中国科学院深圳先进技术分院医学转化研究发展中心,深圳518055 [5]遵义医学院附属医院关节外科,563003

出  处:《中华实验外科杂志》2018年第4期719-722,共4页Chinese Journal of Experimental Surgery

基  金:国家自然科学基金(81572179);江苏省临床医学科技专项(BL2014044);苏州市民生科技项目(SS201634);苏州市临床医学中心项目(SZZX201504);苏州大学附属第二医院优势学科群项目(XKQ2015001);江苏省研究生创新基金项目(CX10B_053Z);苏州大学青年教师科学基金项目(SDY2011A28);苏州大学附属第二医院预研项目(SDFEYGJ1206)

摘  要:目的大鼠骨髓间充质干细胞(BMSCs)在铁蓄积环境下培养,观察细胞增殖指标和成骨方向分化的影响。 方法无菌条件下取正常SD 4周龄雌性大鼠股骨髓腔细胞,经分离纯化后传代培养,并经流式细胞仪鉴定成功后,体外扩增后接种,由不同浓度枸橼酸铁铵(FAC)(50、100、200 μmol/L)及成骨诱导培养基共同培养,以不加FAC为空白对照组,在第4、7、10、14天收集细胞,采用实时定量反转录聚合酶链反应(RT-qPCR),分别检测成骨细胞分化关键基因:成骨相关转录因子2(Runx2)、碱性磷酸酶(ALP)、骨桥蛋白(OPN)表达;在第14天茜素红染色并半定量检测钙结节形成情况;细胞计数试剂盒(CCK-8)法检测不同浓度FAC对BMSCs增殖的影响。 结果随着铁剂浓度的增加,大鼠BMSCs的增殖能力逐渐降低;BMSCs经成骨诱导14 d后,在铁剂影响下,形成的钙结节较空白对照组明显减少,但铁剂干预各组间无明显差异,半定量结果亦显示相同结果(对照组:2.357±0.160、50 μmol/L组:0.308±0.029、100 μmol/L组:0.281±0.031、200 μmol/L组:0.224±0.017,P=0.000);不同浓度的铁剂对BMSCs成骨分化的各个阶段基因都有不同程度的影响。在成骨早期,Runx2的表达在对照组、100 μmol/L和200 μmol/L铁剂干预组有明显差异(对照组:1.000±0.229、100 μmol/L组:0.198±0.044、200 μmol/L组:0.149±0.009,P=0.001),且与浓度存在一致相关性;在成骨中期,不同浓度铁剂对ALP的表达都具有明显抑制(对照组:0.980±0.063、50 μmol/L组:0.018±0.001、100 μmol/L组:0.014±0.002、200 μmol/L组:0.008±0.001,P=0.001);在成骨晚期阶段,不同浓度铁剂较对照组对OPN有明显抑制表达作用(对照组:0.999±0.001、50 μmol/L组:0.170±0.072、100 μmol/L组:0.142±0.008、200 μmol/L组:0.117±0.028,P=0.003)。 结论铁蓄积培养环境可明�ObjectiveTo investigate the proliferation and osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMSCs) in the culture with excess iron. MethodsFour-week old female Sprague-Dawley (SD) rats were used for BMSCs isolation from bone marrow. BMSCs were identified by flow cytometry and exposed to ammonium iron citrate (FAC) (50, 100 and 200 μmol/L) under osteogenic medium for 1 to 2 weeks. The proliferation and differentiation of BMSCs were analyzed by cell counting kit-8 (CCK-8), Alizarin Red S staining and real-time quantitative reverse transcriptase-polymerase chain reaction (RT-qPCR) tests. ResultsThe proliferation activity of BMSCs decreased with the increase of FAC concentration. The formation of calcium nodules decreased with the increase of FAC concentration (P=0.000). The expression of osteogenic differentiation genes runt related transcription factor-2 (Runx2) decreased with the increase of FAC concentration (sham group: 1.000±0.229; 100 μmol/L FAC group: 0.198±0.044; 200 μmol/L FAC group: 0.149±0.009, P=0.001). The mRNA expression of ALP decreased with the increase of FAC concentration (sham group: 0.980±0.063; 50 μmol/L FAC group: 0.018±0.001; 100 μmol/L FAC group: 0.014±0.002; 200 μmol/L FAC group: 0.008±0.001, P=0.001). The mRNA expression of OPN decreased with the increase of FAC concentration (sham group: 0.999±0.001; 50 μmol/L FAC group: 0.170±0.072; 100 μmol/L FAC group: 0.142±0.008; 200 μmol/L FAC group: 0.117±0.028, P=0.003). ConclusionThe ammonium iron citrate significantly inhibit the proliferation of rat BMSCs, and simultaneously suppress osteogenic differentiation of rat BMSCs dose-dependently.

关 键 词:骨髓间充质干细胞 枸橼酸铁铵 成骨分化 大鼠 

分 类 号:R580[医药卫生—内分泌]

 

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