title: Expression and adhesive ability of gicerin, a cell adhesion molecule, in the pock lesions of chorioallantoic membranes infected with an avian poxvirus.
abstract: The expression and adhesive activities of gicerin, a cell adhesion protein, in the pock lesions on chicken chorioallantoic membranes (CAM) infected with an avian poxvirus were studied. In normal CAMs, gicerin was found on the flattened epithelial cells, and neurite outgrowth factor (NOF) was in the basement membrane. However, in the pock lesions on infected CAMs, gicerin was overexpressed on the cell membranes of hyperplastic epithelial cells forming thick epithelial layers. Neurite outgrowth factor was also found mainly in the basement membrane, but occasionally showed aberrant expression among hyperplastic cells. In vitro analyses, using the dissociated cells from pock lesions, demonstrated that an anti-gicerin polyclonal antibody inhibit cell aggregation activity and cell adhesion to NOF. These results suggest that gicerin might promote the cell-cell and cell-extracellular matrix protein bindings of the hyperplastic epithelial cells by its homophilic and heterophilic adhesive activities, and contribute to pock formation on the infected CAMs.
authors.affiliation: Department of Veterinary Anatomy, Graduate School of Agricultural and Biological Sciences, Osaka Prefecture University, Sakai, Japan. ytsuka@jyui.vet.osakafu-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Tsukamoto
authors.forename: T
authors.initials: T
authors.lastname: Kotani
authors.forename: S
authors.initials: S
authors.lastname: Hiroi
authors.forename: M
authors.initials: M
authors.lastname: Egawa
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.forename: F
authors.initials: F
authors.lastname: Sasaki
authors.forename: E
authors.initials: E
authors.lastname: Taira
mesh_terms: D000482:Allantois / Q000473:pathology / Q000821:virology*; D000818:Animals; D030161:Avian Proteins; D018150:Avipoxvirus / Q000502:physiology*; D015153:Blotting, Western / Q000662:veterinary; D051929:CD146 Antigen; D002352:Carrier Proteins / Q000096:biosynthesis* / Q000502:physiology; D002448:Cell Adhesion / Q000502:physiology; D015815:Cell Adhesion Molecules / Q000096:biosynthesis* / Q000502:physiology; D002449:Cell Aggregation / Q000502:physiology; D002478:Cells, Cultured; D002642:Chick Embryo; D002645:Chickens; D002823:Chorion / Q000473:pathology / Q000821:virology*; D046508:Culture Techniques; D007150:Immunohistochemistry / Q000662:veterinary; D011201:Poultry Diseases / Q000378:metabolism / Q000473:pathology; D011213:Poxviridae Infections / Q000378:metabolism / Q000473:pathology / Q000662:veterinary
chemical_list: D030161:Avian Proteins; D051929:CD146 Antigen; D002352:Carrier Proteins; D015815:Cell Adhesion Molecules; C086935:gicerin protein, Gallus gallus