Document Detail

Mere15, a novel polypeptide from Meretrix meretrix, inhibits adhesion, migration and invasion of human lung cancer A549 cells via down-regulating MMPs.
MedLine Citation:
PMID:  23134156     Owner:  NLM     Status:  MEDLINE    
CONTEXT: Mere15 is a novel antitumor polypeptide purified from Meretrix meretrix Linn. (Veneridae). Previous studies have shown that the polypeptide induced cell death via intrinsic mitochondrial pathway.
OBJECTIVE: In the present study, the effects of Mere15 on cell adhesion, migration, invasion, as well as secretion and expression of matrix metalloproteinases (MMPs) were studied in human lung adenocarcinoma A549 cells.
MATERIALS AND METHODS: The effect of Mere15 on cell adhesion, migration and invasion were studied by cell adhesion and transwell assay. The expression of MMPs was determined by gelatin zymography and RT-PCR analysis.
RESULTS: The ability of cell adhesion was decreased by 86.74% at the concentration of 12.0 μg/mL of Mere15. And the migration and invasion of A549 cells were decreased with the inhibition ratio of, 69.22 and 53.84% when treated with 15.0 μg/mL of Mere15. Further study also revealed that treatment of the cancer cells with Mere15 (15.0 μg/mL), the secretion of MMP-2 and MMP-9 were down-regulated with the inhibition ratio of 72.00 and 93.24% and the inhibition rate of mRNA expression of MMP-2 and MMP-9 was 57.54 and 91.22%, respectively.
DISCUSSION AND CONCLUSION: The study demonstrates that Mere15 inhibits tumor growth via both pro-apoptotic and antimetastasis pathways, and the polypeptide has potential to be developed as a multi-target therapeutic agent for the treatment of human lung cancer.
Hui Wang; Jianteng Wei; Ning Wu; Ming Liu; Cuicui Wang; Yuyan Zhang; Fengxia Wang; Haizhou Liu; Xiukun Lin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-11-08
Journal Detail:
Title:  Pharmaceutical biology     Volume:  51     ISSN:  1744-5116     ISO Abbreviation:  Pharm Biol     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-15     Completed Date:  2013-06-27     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  9812552     Medline TA:  Pharm Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  145-51     Citation Subset:  IM    
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MeSH Terms
Adenocarcinoma / enzymology*,  genetics,  pathology
Antineoplastic Agents / isolation & purification,  pharmacology*
Apoptosis / drug effects
Cell Adhesion / drug effects*
Cell Line, Tumor
Cell Movement / drug effects*
Cell Shape / drug effects
Dose-Response Relationship, Drug
Gene Expression Regulation, Enzymologic
Gene Expression Regulation, Neoplastic
Lung Neoplasms / enzymology*,  genetics,  pathology
Matrix Metalloproteinase 2 / genetics,  metabolism*
Matrix Metalloproteinase 9 / genetics,  metabolism*
Mollusca / chemistry*
Neoplasm Invasiveness
Peptides / isolation & purification,  pharmacology*
RNA, Messenger / metabolism
Reverse Transcriptase Polymerase Chain Reaction
Reg. No./Substance:
0/Antineoplastic Agents; 0/Mere15 peptide, Meretrix meretrix; 0/Peptides; 0/RNA, Messenger; EC protein, human; EC Metalloproteinase 2; EC protein, human; EC Metalloproteinase 9

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