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Identification of a peptide for folate receptor alpha by phage display and its tumor targeting activity in ovary cancer xenograft.


ABSTRACT: The expression level of folate receptor alpha (FR?) is located highly rate in ovarian cancer though it is remained absent in normal tissues. This highly tumor restricted expression profile makes FR? a promising target for tumor therapy and diagnosis. In this research we report a FR? binding peptide C7(Met-His-Thr-Ala-Pro-Gly-Trp-Gly-Tyr-Arg-Leu-Ser) discovered by phage display and this peptide showed specific binding to FR? expressing cells by cell ELISA and flow cytometry. Tumor targeting ability of C7 was proved in vivo by both phage homing experiment and fluorescence imaging. C7 can be internalized by SKOV3 cells and its affinity to FR? was determined by MST. The molecular recognition was revealed by structure modeling, suggesting its binding mode with FR?.

SUBMITTER: Xing L 

PROVIDER: S-EPMC5976665 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Identification of a peptide for folate receptor alpha by phage display and its tumor targeting activity in ovary cancer xenograft.

Xing Lijun L   Xu Yifeng Y   Sun Keyong K   Wang Hong H   Zhang Fengguo F   Zhou Zhengpin Z   Zhang Juan J   Zhang Fang F   Caliskan Bilgen B   Qiu Zheng Z   Wang Min M  

Scientific reports 20180530 1


The expression level of folate receptor alpha (FRα) is located highly rate in ovarian cancer though it is remained absent in normal tissues. This highly tumor restricted expression profile makes FRα a promising target for tumor therapy and diagnosis. In this research we report a FRα binding peptide C7(Met-His-Thr-Ala-Pro-Gly-Trp-Gly-Tyr-Arg-Leu-Ser) discovered by phage display and this peptide showed specific binding to FRα expressing cells by cell ELISA and flow cytometry. Tumor targeting abili  ...[more]

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