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时间:2020-05-15
《甲状旁腺素羧基端肽段的表达及其对大鼠成骨细胞增殖的影响.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、临床骨科杂志JournalofClinicalOrthopaedics2015Jun;18(3)·373·doi:10.3969/j.issn.1008-0287.2015.03.044·实验与临床·甲状旁腺素羧基端肽段的表达及其对大鼠成骨细胞增殖的影响李敬华,张莹,梁东春,左爱军,郭刚,张镜宇,孙蓓摘要:目的探讨rhPTH。斛、rhPTH及hPTH~对大鼠成骨细胞增殖的影响。方法分子生物学方法克隆表达hPTH、hPTH科重组蛋白。体外培养的大鼠成骨细胞给予不同浓度的PTH作用后,采用噻唑蓝(MTI")法检测细胞增殖。结
2、果获得了浓度约为261.82mg/L的rhPTH和浓度为165.45mg/L的rhPTH。l0”~l0。mol/L范围的rhH一和hFfH促进大鼠成骨细胞的增殖;rhPTH则抑制大鼠成骨细胞增殖。结论成功获得了高浓度高纯度的rhH及rhPTHrhPTH抑制细胞增殖,为进一步研究甲状旁腺激素及其羧基端肽段的功能奠定了基础。关键词:甲状旁腺素;羧基端;成骨细胞增殖中图分类号:R977.14;R336文献标识码:A文章编号:1008—0287(2015)03—0373—05TheexpressionofC-terminalpa
3、rathyroidhormonepeptideanditseffectonratosteoblasticcellproliferationL/ng—hua,ZHANGYing,LIANGDong—chun,ZUOAijun,GUOGang,ZHANGjing-yu,SUNBei(KeyLaboratoryofHormonesandGrowthoftheMinistryofHealth,EndocrinologyResearchInstituteofMetabolicDiseaseHospitalofTianfinMedi
4、calUniversity,Tianjin300070,China;DeptofEndocrinology,theAfiliatedHospitalofLogisticalCollegeofChinesePeopleSArmedPoZiceForces.Tian]in300162.China)Abstract:ObjectiveTostudytheeffectsonratosteoblastcellmultiplicationofrhPTHl~84,rhPTH37~84andhPTH1MethodsRecombinant
5、humanPTH1andPTH3784werecoinedandexpressedwithgeneticengineer--34"ing.RatosteoblastcellwereincubatedwithdifferentconcentrationsofPTH.CellproliferationwasassessedbyM1Trcolormetricassay.ResultsTheproductswerepurifiedandcalculatdthefinalconcentrationsofrhPTH184andrhP
6、,rH3784were:261.82mg/L,165.45mg/L.Incubationwith10”一10mol/LrhPTH184andhPTH1~34pro—motedtheproliferationofMG63.Incubationwith10一~10‘mol/LrhPTH37inhibitedtheproliferationofMG63.~84ConclusionsTherhPTHl84andrhPTH37inhibitedthepro-一~84wereobtainedwithhighpuritypeptide
7、s.rhPTH37~84liferationofMG63,whichlaidthefoundationforfurterstudyofthefunctionofPTHandtheC—terminalpeptide.Keywords:parathyroidhormone;carboxylterminal;osteoblasticcellproliferation甲状旁腺主细胞合成分泌的甲状旁腺素(para.研究发现,P11H具有与PTH完全相同的受体thyroidhormone,PTH)是具有调节钙磷代谢及骨转结合能力及促
8、成骨作用,但当给予大鼠P1’H换功能的重要肽类激素。人体血液循环中仅存在少后骨肉瘤的发病率明显上升(最高致瘤率达52%)。量的甲状旁腺素H~斟,大部分以其代谢产物羧而羧基端肽段具有与PTH相拮抗的生理学作基端肽段PTH,及少量H,的形式存在⋯。用]。目前对于应用于临床的氨基端肽段H的促成骨作用研究比较成熟,但因其高骨
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