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Journal ArticleDOI

Maspin, a serpin with tumor-suppressing activity in human mammary epithelial cells

TLDR
Results support the hypothesis that maspin functions as a tumor suppressor and reduce the cells' ability to induce tumors and metastasize in nude mice and to invade through a basement membrane matrix in vitro.
Abstract
A gene encoding a protein related to the serpin family of protease inhibitors was identified as a candidate tumor suppressor gene that may play a role in human breast cancer. The gene product, called maspin, is expressed in normal mammary epithelial cells but not in most mammary carcinoma cell lines. Transfection of MDA-MB-435 mammary carcinoma cells with the maspin gene did not alter the cells' growth properties in vitro, but reduced the cells' ability to induce tumors and metastasize in nude mice and to invade through a basement membrane matrix in vitro. Analysis of human breast cancer specimens revealed that loss of maspin expression occurred most frequently in advanced cancers. These results support the hypothesis that maspin functions as a tumor suppressor.

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Putting tumours in context

TL;DR: In this article, the interactions between cancer cells and their micro-and macro-environment create a context that promotes tumour growth and protects it from immune attack, and the functional association of cancer cells with their surrounding tissues forms a new 'organ' that changes as malignancy progresses.
Journal ArticleDOI

Predicting the clinical status of human breast cancer by using gene expression profiles.

TL;DR: Bayesian regression models that provide predictive capability based on gene expression data derived from DNA microarray analysis of a series of primary breast cancer samples are developed and the utility and validity of such models in predicting the status of tumors in crossvalidation determinations are assessed.
References
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Book

Antibodies: A Laboratory Manual

Ed Harlow, +1 more
TL;DR: A second edition of Antibodies: A Laboratory Manual is being published in September 2013, Revised, extended and updated by Edward Greenfield of the Dana-Farber Cancer Center, the material has been recast with extensive new information and new chapters have been added.
Journal ArticleDOI

Compilation and analysis of sequences upstream from the translational start site in eukaryotic mRNAs

TL;DR: The sequence CCAGCCAUG (G) thus emerges as a consensus sequence for eukaryotic initiation sites, and the extent to which the ribosome binding site in a given mRNA matches the -1 to -5 consensus sequence varies.
Journal ArticleDOI

Implications of the three-dimensional structure of alpha 1-antitrypsin for structure and function of serpins.

TL;DR: Article synthese sur l'α1-antitrypsine: caracteristiques structurales and fonctionnelles (capacite de liaison a des modulateurs) andrology en tant que modele pour toutes les serpines.
Journal ArticleDOI

Biotin amplification of biotin and horseradish peroxidase signals in histochemical stains.

TL;DR: The amplification procedure, together with the availability of avidin probes labeled with fluorochromes, colloidal gold, or enzyme systems other than HRP, provides a means of greatly increasing the versatility of a variety of histochemical reactions, including those for detecting in situ hybridization probes, in addition to increasing the sensitivity of the reactions.
Journal Article

Tumorigenicity and metastasis of human breast carcinoma cell lines in nude mice.

TL;DR: The results suggest that the estrogen receptor-negative MDA-MB-435 cell line injected into nude mice is a favorable site for the growth of human breast carcinomas and could be a valuable tool for analysis of the cellular and molecular basis of the metastasis of advanced breast cancer.
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