A Novel Specific Small Molecule Peptide for Small Cell Lung Cancer
DOI:
Author:
Affiliation:

Clc Number:

Fund Project:

This work was supported by a grant from The Science and Technology Plan of Guangzhou (2003Z2-E0061, E0063).

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Screen small molecule peptide specific binding to small cell lung cancer cell (DMS53) was screened by using the “one-bead one-peptide” combinatorial technology. Thirty two positive beads binding to DMS53 were totally obtained after primary screening. Consensus peptide sequences of cXNGRXXc and cNGRXXXc were identified by amino acid sequencing in ten beads. Three representative peptides were re-synthesized on beads. Secondary screening showed that cell adhesion percentage of cFNGRQQc to DMSS was higher than the other two peptides. cFNGRQQc was further studied for cell specificity, alanine scanning and site-directed deletion. The results showed that cFNGRQQc is specific for promoting cell adhesion to DMS53 but not to other human cell lines. Both motif of -NGR- and the length of six peptide of cFNGRQQc structure are important for DMS53 attachment. In an antibody or peptide blocking assay, cell adhesion of DMS53 to peptide bead was not inhibited by antibodies or peptides including anti-integrin, E-cadherin, NCAM and ICAM. The binding site on DMS53 surface for cFNGRQQc peptide need to be proven in the future.

    Reference
    Related
    Cited by
Get Citation

GUO Lin-Lang, GUO Ying, LAU Derick, XIAO Sha, XU Yin-Chao, SHEN Hong. A Novel Specific Small Molecule Peptide for Small Cell Lung Cancer[J]. Progress in Biochemistry and Biophysics,2006,33(6):562-566

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:November 23,2005
  • Revised:December 28,2005
  • Accepted:
  • Online: June 14,2006
  • Published: June 20,2006