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时间:2020-05-04
《噬菌体肽库在筛选及鉴定高转移性肝癌特异性结合肽中的应用及其意义-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第4O卷第1期吉林大学学报(医学版)Vo1.40No.12014年1月JournalofJilinUniversity(MedicineEdition)Vo1.201487[文章编号]1671—587X(2014)01—0087—05DOI:10·7694/jldxyXb2O14O12O噬菌体肽库在筛选及鉴定高转移性肝癌特异性结合肽中的应用及其意义黄维莉。,吕永晨,迟宝荣(1.北华大学附属医院消化内科,吉林吉林132011;2.吉林大学第一医院消化内科,吉林长春130021;3.吉林省吉林市中心医院普通外科,吉林吉林132011)[摘要]目的:探
2、讨噬菌体环七肽库在筛选与肝癌高转移细胞株HCCLM3特异高效结合的短肽中的应用,为进一步探索肝癌转移的分子机制和寻找肝癌转移标志物奠定基础。方法:以人肝癌高转移细胞株HCCLM3为靶细胞、人肝癌低转移细胞株SMMC7721为吸附细胞对噬菌体环七肽库进行4轮差减筛选,采用ELISA方法进一步筛选出与HCCLM3细胞高度亲和的阳性克隆(即实验组A值高于对照组3倍以上),并利用免疫细胞化学方法鉴定噬菌体阳性克隆的特异性并测序。结果:经过4轮陶筛后,噬菌体在筛选靶细胞上出现明显富集,且逐轮提高(P3、体克隆进行初步鉴定,得到6个能与肝癌细胞HCCLM3亲和度较高的阳性克隆(C4、C6、C7、C10、Cll和C17);通过免疫细胞化学染色鉴定阳性克隆靶向肝癌细胞HCCLM3的特异性,与对照组比较,C7噬菌体对高转移潜能肿瘤细胞具有较高特异性(P<0.05);测序显示6个阳性克隆氨基酸序列无同源性。结论:利用噬菌体环七肽库筛选得到与人肝癌高转移细胞株HCCLM3具有较高亲和力的多肽。[关键词]噬菌体环七肽库;肝肿瘤;转移;短肽[中图分类号]R737.25[文献标志码]AApplicationofphage。-displaypeptidelibra4、ryinscreeningshortpeptidesbindingspecificallytohighmetastaticpotentialhepat0cellularcarcinomacellsanditssignificanceHUANGWei-li,LYUYong—chen。CHIBao—rong。(1.DepartmentofGastroenterology,AffiliatedHospital,BeihuaUniversity,Jilin132011,China;2.DepartmentofGastroenterology,FirstH5、ospital,JilinUniversity,Changchun130021,China;3.DepartmentofGeneralSurgery,CentralHospitalofJilinCity,JilinProvince,Jilin132011,China)Abstract:ObjectiveToexploretheapplicationofc7cphage-displaypeptidelibraryinscreeningtheshortpeptideswhichbindspecificallytOhighmetastaticpoten6、tialhepatocellularcarcinomacellsHCCLM3,andtOlayfoundationforresearchonthemolecularmechanismofhepatomametastasisanddetectionofthemarkersofhepatomametastasis.MethodsThehumanhighmetastaticpotentialhepatocellularcarcinomaceilsHCCLM3wereusedasthetargetceilsandthehumanIOWmetastatic7、potentialhepatoeellularcarcinomaceilsSMMC7721astheabsorbercellsforsubtractionbiopanningfromc7cphage-displaypeptidelibrary.TheaffinityandspeCificityofthepositivephagecloneswereidentifiedbyELISAandimmunocytochemistry,andtheaminoacidsequenceswerededucedbyDNAsequencing.ResultsAft8、er4roundsofscreening,thephageswhichcanbindtOtheHCCLM3cellswere[收稿日期]
3、体克隆进行初步鉴定,得到6个能与肝癌细胞HCCLM3亲和度较高的阳性克隆(C4、C6、C7、C10、Cll和C17);通过免疫细胞化学染色鉴定阳性克隆靶向肝癌细胞HCCLM3的特异性,与对照组比较,C7噬菌体对高转移潜能肿瘤细胞具有较高特异性(P<0.05);测序显示6个阳性克隆氨基酸序列无同源性。结论:利用噬菌体环七肽库筛选得到与人肝癌高转移细胞株HCCLM3具有较高亲和力的多肽。[关键词]噬菌体环七肽库;肝肿瘤;转移;短肽[中图分类号]R737.25[文献标志码]AApplicationofphage。-displaypeptidelibra
4、ryinscreeningshortpeptidesbindingspecificallytohighmetastaticpotentialhepat0cellularcarcinomacellsanditssignificanceHUANGWei-li,LYUYong—chen。CHIBao—rong。(1.DepartmentofGastroenterology,AffiliatedHospital,BeihuaUniversity,Jilin132011,China;2.DepartmentofGastroenterology,FirstH
5、ospital,JilinUniversity,Changchun130021,China;3.DepartmentofGeneralSurgery,CentralHospitalofJilinCity,JilinProvince,Jilin132011,China)Abstract:ObjectiveToexploretheapplicationofc7cphage-displaypeptidelibraryinscreeningtheshortpeptideswhichbindspecificallytOhighmetastaticpoten
6、tialhepatocellularcarcinomacellsHCCLM3,andtOlayfoundationforresearchonthemolecularmechanismofhepatomametastasisanddetectionofthemarkersofhepatomametastasis.MethodsThehumanhighmetastaticpotentialhepatocellularcarcinomaceilsHCCLM3wereusedasthetargetceilsandthehumanIOWmetastatic
7、potentialhepatoeellularcarcinomaceilsSMMC7721astheabsorbercellsforsubtractionbiopanningfromc7cphage-displaypeptidelibrary.TheaffinityandspeCificityofthepositivephagecloneswereidentifiedbyELISAandimmunocytochemistry,andtheaminoacidsequenceswerededucedbyDNAsequencing.ResultsAft
8、er4roundsofscreening,thephageswhichcanbindtOtheHCCLM3cellswere[收稿日期]
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