[Screening and identification of phage-displayed polypeptides specifically binding to human gastric cancer with high metastatic potential to peritoneum].
Zhonghua Zhong Liu Za Zhi
; 27(7): 397-400, 2005 Jul.
Article
em Zh
| MEDLINE
| ID: mdl-16188121
ABSTRACT
OBJECTIVE:
By means of phage-display technique, to screen polypeptides that specifically bind to human gastric cancer with high metastatic potential to peritoneum.METHODS:
Two human gastric cancer cell lines were used GC9811-P with high metastatic potential to peritoneum and its wild type parental GC9811, to carry out subtractive screening with a phage display-12 peptide library.RESULTS:
After three rounds of screening, 40 phage clones bond to GC9811-P cells were randomly selected. When injected into the peritoneal cavity of nude mice, 6 of the 40 clones did not bind to mouse peritoneum as examined by immunohistochemical staining. They were considered to be capable of binding specifically to GC9811-P cells. Sequence analysis revealed two different exogenous peptides TLNINRLILPRT and SMSI(X)SPYI(XXX).CONCLUSION:
Two peptides have been obtained that specifically bind to a gastric cancer cell variant GC9811-P, which easily disseminates to the peritoneum. Whether or not they could block GC9811-P metastasis to peritoneum in vivo remains to be determined.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Peptídeos
/
Neoplasias Peritoneais
/
Neoplasias Gástricas
/
Biblioteca de Peptídeos
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Animals
/
Female
/
Humans
/
Male
Idioma:
Zh
Revista:
Zhonghua Zhong Liu Za Zhi
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
China