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《胶原海绵促进人脐静脉血管内皮细胞生长的体外实验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、·1494·JournalofClinicalandExperimentalMedicineVo1.13.No.18Sep.2014DOI:10.3969/j.issn.1671—4695.2014.18.005文章编号:1671-4695(2014)18—1494—03胶原海绵促进人脐静脉血管内皮细胞生长的体外实验研究李琳姚昶h朱永康任伟业何鹏陈灵乐音子曹东阳郭檬檬(1南京中医药大学附属医院江苏南京210029;2无锡贝迪生物工程有限公司江苏无锡234o92)【摘要】目的探讨胶原海绵促进人脐静脉血管内皮细胞生
2、长的疗效与机制。方法实验组在细胞培养孔中加入含8u胶原酶的0.2mlPBS2film×2mm×2mill正方体胶原海绵;对照组仅加入含8U胶原酶的0.2m1无菌的PBS液体。培养24h后测血管内皮细胞增殖(M1rr实验)、迁移(划痕实验)、及免疫蛋白印迹检测血管生成素1(Ang1)、血管内皮生长因子(VEGF)与整合素(Integratxv)。结果细胞培养后24h,实验组可以显著促进HUVEC的增殖,增殖率达86%;实验组血管内皮细胞细胞迁移加快,12h细胞迁移完成,显著高于对照组(P<0.01);实验组VEG
3、F、Angl及Integraetv蛋白表达明显高于控制组,其中以整合素av蛋白表达增加尤为显著,增加了80%。结论胶原海绵促进血管内皮细胞增殖与迁移,其中促进迁移的作用较强,机制之一为提高了血管内皮细胞中VEGF、ANGI、Integraotv蛋白表达。【关键词】胶原海绵脐静脉血管内皮细胞迁移整合素Studyonenhancinggrowthofhumanumbilicalvascularendothelialcellswithcollagensponge·L/Lin,YAOChang,ZHUy0一增,eta1
4、.AfiliatedHospitalofNanjingUniversityofTCM,NanjingJiangsu210029,China.【Abstract]ObjectiveToexplorethee£fectandmechanismofcollagenspongeonthegrowthofhumanumbilicalvascularendothelialcells.MethodsAllspecimensweredividedintoexperimentalgroupandcontrolgroup,spec
5、imensinexperimentalgroupwerecollagenspongewithcubesizeof2mm×2mm×2mmincubatedwith1ml0f8unitsofcollagenaseloadinginsideindulgedintheincubationfluidofHUVEC.whereasspecimensincontrolgroupwereindulgedwithonly1mlof8unitsofeollagenase.Thevascularendothelialcellprol
6、iferationexperiment(MTr),migrationassayandproteinexpressionofangiogenin1(Ang1),vascularendothelialgrowthfactor(~EGF)andintegrinintegradVwithwesternblottingwereappliedonthetimeofO,6,12and24hoursofincubation.ResultsTheproliferationrateofHUVECinexperimentalgrou
7、phadbeenincreasedby86%,ascomparedwiththatofcontrolgroup.Thecellmigrationratesat12hoursand24hoursinexperimentalgroupweresignificantlyhigherthanthoseofcontrolgroup(P8、eresultsofcontrolgroupwithmuchhigherproteinexpressionofintegradvwhichincreasedby8o%inexperimentalgroupascomparedwithothers.ConclusionItshowsthatpositiveefectonvascularendothelialcellmigrationand
8、eresultsofcontrolgroupwithmuchhigherproteinexpressionofintegradvwhichincreasedby8o%inexperimentalgroupascomparedwithothers.ConclusionItshowsthatpositiveefectonvascularendothelialcellmigrationand
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