郑州大学学报(医学版)
鄭州大學學報(醫學版)
정주대학학보(의학판)
JOURNAL OF ZHENGZHOU UNIVERSITY(MEDICAL SCIENCES)
2014年
3期
304-307
,共4页
武俊芳%牛杰%李晓鹏%张芬熙%林俊堂%任同明%汪艳丽
武俊芳%牛傑%李曉鵬%張芬熙%林俊堂%任同明%汪豔麗
무준방%우걸%리효붕%장분희%림준당%임동명%왕염려
氧化型低密度脂蛋白%骨髓间充质干细胞%细胞迁移%细胞骨架%钙离子%小鼠
氧化型低密度脂蛋白%骨髓間充質榦細胞%細胞遷移%細胞骨架%鈣離子%小鼠
양화형저밀도지단백%골수간충질간세포%세포천이%세포골가%개리자%소서
oxidized low-density lipoprotein%bone marrow mesenchymal stem cell%cell migration%cytoskeleton%calcium ion%mouse
目的:研究氧化型低密度脂蛋白(ox-LDL)对小鼠骨髓间充质干细胞(bmMSCs)迁移的影响。方法:观察小鼠bmMSCs对ox-LDL的摄取能力。应用不同质量浓度(0、5、10和20 mg/L) ox-LDL诱导培养bmMSCs 6 h后,利用Transwell系统检测bmMSCs跨内皮迁移率,流式细胞仪检测ox-LDL细胞内钙离子阳性率,激光共聚焦显微镜检测细胞骨架F-actin在细胞内的分布。结果:小鼠bmMSCs具有较强的摄取ox-LDL的能力。0、5、10和20 mg/L ox-LDL处理组bmMSCs跨内皮迁移率分别为(26.663±1.575)%、(34.653±2.693)%、(38.238±3.050)%和(42.833±3.748)%,钙离子阳性率分别为(42.375±4.281)%、(66.203±5.416)%、(77.958±4.338)%和(84.638±4.768)%,组间比较差异均有统计学意义(F=22.576、63.819,P<0.001)。 ox-LDL可促进细胞骨架F-actin的重组。结论:ox-LDL可通过调节细胞骨架重组和胞内钙离子阳性率促进bmMSCs的迁移。
目的:研究氧化型低密度脂蛋白(ox-LDL)對小鼠骨髓間充質榦細胞(bmMSCs)遷移的影響。方法:觀察小鼠bmMSCs對ox-LDL的攝取能力。應用不同質量濃度(0、5、10和20 mg/L) ox-LDL誘導培養bmMSCs 6 h後,利用Transwell繫統檢測bmMSCs跨內皮遷移率,流式細胞儀檢測ox-LDL細胞內鈣離子暘性率,激光共聚焦顯微鏡檢測細胞骨架F-actin在細胞內的分佈。結果:小鼠bmMSCs具有較彊的攝取ox-LDL的能力。0、5、10和20 mg/L ox-LDL處理組bmMSCs跨內皮遷移率分彆為(26.663±1.575)%、(34.653±2.693)%、(38.238±3.050)%和(42.833±3.748)%,鈣離子暘性率分彆為(42.375±4.281)%、(66.203±5.416)%、(77.958±4.338)%和(84.638±4.768)%,組間比較差異均有統計學意義(F=22.576、63.819,P<0.001)。 ox-LDL可促進細胞骨架F-actin的重組。結論:ox-LDL可通過調節細胞骨架重組和胞內鈣離子暘性率促進bmMSCs的遷移。
목적:연구양화형저밀도지단백(ox-LDL)대소서골수간충질간세포(bmMSCs)천이적영향。방법:관찰소서bmMSCs대ox-LDL적섭취능력。응용불동질량농도(0、5、10화20 mg/L) ox-LDL유도배양bmMSCs 6 h후,이용Transwell계통검측bmMSCs과내피천이솔,류식세포의검측ox-LDL세포내개리자양성솔,격광공취초현미경검측세포골가F-actin재세포내적분포。결과:소서bmMSCs구유교강적섭취ox-LDL적능력。0、5、10화20 mg/L ox-LDL처리조bmMSCs과내피천이솔분별위(26.663±1.575)%、(34.653±2.693)%、(38.238±3.050)%화(42.833±3.748)%,개리자양성솔분별위(42.375±4.281)%、(66.203±5.416)%、(77.958±4.338)%화(84.638±4.768)%,조간비교차이균유통계학의의(F=22.576、63.819,P<0.001)。 ox-LDL가촉진세포골가F-actin적중조。결론:ox-LDL가통과조절세포골가중조화포내개리자양성솔촉진bmMSCs적천이。
Aim: To investigate the effect of oxidized low-density lipoprotein ( ox-LDL) on migration of mouse bone marrow mesenchymal stem cells(bmMSCs).Methods:bmMSCs were cultured in growth medium with different concentra-tions (0, 5, 10 and 20 mg/L) of ox-LDL for 6 hours.The transendothelial migration rate of bmMSCs was measured using a Transwell system.The distribution of F-actin in bmMSCs was detected using a laser scanning confocal microscope follow-ing Rhodamine phalloidin staining .The concentrations of calcium ion ( Ca2+) in bmMSCs was measured using a flow cy-tometer following Fluo-3/AM staining.Results: bmMSCs had high potential to take up ox -LDL.The transendothelial migrationrate was (26.663 ±1.575)%,(34.653 ±2.693)%, (38.238 ±3.050)% and (42.833 ±3.748)% in controlgroup, 5, 10 and 20 mg/L ox-LDL groups; there was significant differences among control group and the other 3 ox-LDLgroups(F =22.576,P <0.001).The flow cytometry analysis showed that the positive rate of Ca 2 + was (42.375 ±4.281)%,(66.203 ±5.416)%,(77.958 ±4.338)% and (84.638 ±4.768)% in control group, 5, 10 and 20 mg/Lox-LDL groups; there was significant difference among control group and the other 3 ox-LDL groups(F =63.819,P <0.001).Furthermore, ox-LDL also promoted reorganization of F-actin cytoskeleton.Conclusion: Ox-LDL can promotemigration of bmMSCs via regulation of cytoskeleton organization and Ca 2 + positive rates.