Embigin, a developmentally expressed member of the immunoglobulin super family, is also expressed during regression of prostate and mammary gland

Developmental Genetics
R S GuenetteM Tenniswood

Abstract

Cell adhesion molecules (CAMs) are intimately involved in a variety of cellular processes, including development, cell growth, apoptosis, and differentiation. Interaction of CAMs with components of the extracellular matrix (ECM) growth factors, and other CAMs provides an intricate regulatory mechanism for a diverse range of cellular responses. Embigin is a developmentally expressed protein that is a member of the immunoglobulin superfamily (IgSF) class of CAMs. We have identified embigin as a gene expressed during tissue regression in rat prostate and lactating mammary gland following hormonal ablation. In the absence of the appropriate hormone, the secretory epithelial cells of these two tissues undergo successive waves of apoptotic cell death co-incident with extensive reorganization of the surviving tissue. Using Northern analysis, in situ hybridization analysis, RT-PCR, and Western analysis we have characterized the expression of embigin mRNA and protein in both regressing prostate and mammary gland. During development of the prostate gland, increased expression of embigin is correlated with the appearance of highly organized lumenal and ductal structures. Embigin is also expressed in a variety of adult tissues including he...Continue Reading

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Jul 29, 2003·Journal of Pharmaceutical Sciences·Bradley E Enerson, Lester R Drewes
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