Document Detail


Galectin inhibitory disaccharides promote tumour immunity in a breast cancer model.
MedLine Citation:
PMID:  20826047     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
High level galectin-1 expression results in cancer cell evasion of the immune response, increased tumour survival and aggressive metastases. Using a galectin-1 polyclonal antibody, high levels of galectin-1 protein were shown to be expressed by breast cancer cells established from FVB/N MMTV-c-neu mice as well as by the B16F10 melanoma cell line. In mixed lymphocyte cultures using tumour cells as antigenic stimulators, addition of recombinant galectin-1 dose-dependently inhibited lymphocyte production. Disaccharides were identified that inhibited galectin-1 function and increased growth and activation of CD8(+) CTL's killing cancer cells. X-ray crystallographic structures of human galectin-1 in complex with inhibitory disaccharides revealed their mode of binding. Combining galectin-blocking carbohydrates as adjuvants with vaccine immunotherapy in vivo to promote immune responses significantly decreased tumour progression and improved the outcomes for tumour challenged mice. This is the first report showing that suitably selected galectin-1 blocking disaccharides will act as adjuvants promoting vaccine stimulated immune responses against tumours in vivo.
Authors:
Kimberley A Stannard; Patrick M Collins; Koichi Ito; Emily M Sullivan; Stacy A Scott; Elwyn Gabutero; I Darren Grice; Pauline Low; Ulf J Nilsson; Hakon Leffler; Helen Blanchard; Stephen J Ralph
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-09
Journal Detail:
Title:  Cancer letters     Volume:  299     ISSN:  1872-7980     ISO Abbreviation:  Cancer Lett.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-11-01     Completed Date:  2010-11-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7600053     Medline TA:  Cancer Lett     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  95-110     Citation Subset:  IM    
Copyright Information:
Crown Copyright © 2010. Published by Elsevier Ireland Ltd. All rights reserved.
Affiliation:
School of Medical Science, Griffith University, Southport, QLD 4222, Australia. k.stannard@griffith.edu.au
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MeSH Terms
Descriptor/Qualifier:
Animals
Blotting, Western
CD8-Positive T-Lymphocytes / immunology
Cancer Vaccines / administration & dosage,  immunology
Cell Line, Tumor
Cell Proliferation / drug effects
Crystallography, X-Ray
Cytotoxicity, Immunologic / drug effects
Disaccharides / chemistry,  metabolism,  pharmacology*
Female
Galectin 1 / chemistry,  genetics,  metabolism
Galectin 3 / chemistry,  genetics,  metabolism
Galectins / chemistry,  genetics,  metabolism*
Humans
Immunity / drug effects*
Immunotherapy / methods
Mammary Neoplasms, Experimental / immunology*,  pathology,  therapy
Mice
Mice, Inbred Strains
Models, Molecular
Protein Binding
Thiogalactosides / chemistry,  metabolism,  pharmacology
Tumor Burden / drug effects
Chemical
Reg. No./Substance:
0/Cancer Vaccines; 0/Disaccharides; 0/Galectin 1; 0/Galectin 3; 0/Galectins; 0/Thiogalactosides; 96-82-2/lactobionic acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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