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Glycosylation dependent cell adhesion molecule 1-like protein and L-selectin expression in sheep interplacentomal and placentomal endometrium.
Reproduction. 2006 Apr; 131(4):751-61.R

Abstract

Glycosylation dependent cell adhesion molecule 1 (GlyCAM-1), a mucin component of sheep histotroph produced by glandular epithelium (GE) during early pregnancy, is hypothesized to function in implantation. However, GlyCAM-1 is present in uterine tissues subsequent to implantation suggesting additional functions of this l-selectin-binding ligand. This study focused on uterine GlyCAM-1 expression during placentome development in sheep. Western blot analysis of day 50 pregnant sheep identified 45, 40, and 25 kDa bands in interplacentomal endometrium, 40 and 25 kDa bands in placentomes, and 80 and 40 kDa bands in chorioallantois. The GlyCAM-1 proteins in interplacentomal regions were comparable to those detected in day 15-19 pregnant sheep, however, the 80 kDa form was unique to chorioallantois, and the absence of the 45 kDa GlyCAM-1 in placentomes indicated differences between interplacentomal and placentomal endometrium. Immunofluorescence identified GlyCAM-1 in lumenal epithelium (LE), stromal fibroblasts, and vascular smooth muscle cells. To better define its cellular distribution, GlyCAM-1 was co-localized with either epithelium-specific cytokeratin, smooth muscle-specific alpha-smooth muscle actin (alpha SMA), or stromal-specific vimentin. In interplacentomal endometrium, GlyCAM-1 co-localized with cytokeratin in LE but not in GE. GlyCAM-1 did not co-localize with alpha SMA, and was localized in the extracellular matrix of vimentin-positive stroma. In placentomes, GlyCAM-1 did not co-localize with cytokeratin, but did co-localize with alpha SMA and vimentin. Thus, in contrast to interplacentomal regions, GlyCAM-1 in placentomes was predominantly localized in vasculature rather than epithelial cells. Further, leukocytes expressing L-selectin were localized to the endothelial surface of GlyCAM-1-expressing vessels within placentomes. These data suggest that GlyCAM-1 assumes distinct functions in compartment-specific regions of the sheep uterus.

Authors+Show Affiliations

Department of Veterinary Integrative Biosciences, Texas A& M University, College Station, Texas 77843, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

16595726

Citation

Muniz, Jésus J., et al. "Glycosylation Dependent Cell Adhesion Molecule 1-like Protein and L-selectin Expression in Sheep Interplacentomal and Placentomal Endometrium." Reproduction (Cambridge, England), vol. 131, no. 4, 2006, pp. 751-61.
Muniz JJ, Joyce MM, Taylor JD, et al. Glycosylation dependent cell adhesion molecule 1-like protein and L-selectin expression in sheep interplacentomal and placentomal endometrium. Reproduction. 2006;131(4):751-61.
Muniz, J. J., Joyce, M. M., Taylor, J. D., Burghardt, J. R., Burghardt, R. C., & Johnson, G. A. (2006). Glycosylation dependent cell adhesion molecule 1-like protein and L-selectin expression in sheep interplacentomal and placentomal endometrium. Reproduction (Cambridge, England), 131(4), 751-61.
Muniz JJ, et al. Glycosylation Dependent Cell Adhesion Molecule 1-like Protein and L-selectin Expression in Sheep Interplacentomal and Placentomal Endometrium. Reproduction. 2006;131(4):751-61. PubMed PMID: 16595726.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Glycosylation dependent cell adhesion molecule 1-like protein and L-selectin expression in sheep interplacentomal and placentomal endometrium. AU - Muniz,Jésus J, AU - Joyce,Margaret M, AU - Taylor,James D,2nd AU - Burghardt,James R, AU - Burghardt,Robert C, AU - Johnson,Greg A, PY - 2006/4/6/pubmed PY - 2006/10/4/medline PY - 2006/4/6/entrez SP - 751 EP - 61 JF - Reproduction (Cambridge, England) JO - Reproduction VL - 131 IS - 4 N2 - Glycosylation dependent cell adhesion molecule 1 (GlyCAM-1), a mucin component of sheep histotroph produced by glandular epithelium (GE) during early pregnancy, is hypothesized to function in implantation. However, GlyCAM-1 is present in uterine tissues subsequent to implantation suggesting additional functions of this l-selectin-binding ligand. This study focused on uterine GlyCAM-1 expression during placentome development in sheep. Western blot analysis of day 50 pregnant sheep identified 45, 40, and 25 kDa bands in interplacentomal endometrium, 40 and 25 kDa bands in placentomes, and 80 and 40 kDa bands in chorioallantois. The GlyCAM-1 proteins in interplacentomal regions were comparable to those detected in day 15-19 pregnant sheep, however, the 80 kDa form was unique to chorioallantois, and the absence of the 45 kDa GlyCAM-1 in placentomes indicated differences between interplacentomal and placentomal endometrium. Immunofluorescence identified GlyCAM-1 in lumenal epithelium (LE), stromal fibroblasts, and vascular smooth muscle cells. To better define its cellular distribution, GlyCAM-1 was co-localized with either epithelium-specific cytokeratin, smooth muscle-specific alpha-smooth muscle actin (alpha SMA), or stromal-specific vimentin. In interplacentomal endometrium, GlyCAM-1 co-localized with cytokeratin in LE but not in GE. GlyCAM-1 did not co-localize with alpha SMA, and was localized in the extracellular matrix of vimentin-positive stroma. In placentomes, GlyCAM-1 did not co-localize with cytokeratin, but did co-localize with alpha SMA and vimentin. Thus, in contrast to interplacentomal regions, GlyCAM-1 in placentomes was predominantly localized in vasculature rather than epithelial cells. Further, leukocytes expressing L-selectin were localized to the endothelial surface of GlyCAM-1-expressing vessels within placentomes. These data suggest that GlyCAM-1 assumes distinct functions in compartment-specific regions of the sheep uterus. SN - 1470-1626 UR - https://www.unboundmedicine.com/medline/citation/16595726/Glycosylation_dependent_cell_adhesion_molecule_1_like_protein_and_L_selectin_expression_in_sheep_interplacentomal_and_placentomal_endometrium_ L2 - https://rep.bioscientifica.com/doi/10.1530/rep.1.00855 DB - PRIME DP - Unbound Medicine ER -