An astrocytic binding site for neuronal Thy-1 and its effect on neurite outgrowth.

Leonard Levin // Publications // Nov 21 1995

PubMed ID: 7479964

Author(s): Dreyer EB, Leifer D, Heng JE, McConnell JE, Gorla M, Levin LA, Barnstable CJ, Lipton SA. An astrocytic binding site for neuronal Thy-1 and its effect on neurite outgrowth. Proc Natl Acad Sci U S A. 1995 Nov 21;92(24):11195-9.

Journal: Proceedings Of The National Academy Of Sciences Of The United States Of America, Volume 92, Issue 24, Nov 1995

Thy-1, a member of the immunoglobulin superfamily, is one of the most abundant glycoproteins on mammalian neurons. Nevertheless, its role in the peripheral or central nervous system is poorly understood. Certain monoclonal antibodies to Thy-1 promote neurite outgrowth by rodent central nervous system neurons in vitro, suggesting that Thy-1 functions, in part, by modulating neurite outgrowth. We describe a binding site for Thy-1 on astrocytes. This Thy-1-binding protein has been characterized by immunofluroesence with specific anti-idiotype monoclonal antibodies and by three competitive binding assays using (i) anti-idiotype antibodies, (ii) purified Thy-1, and (iii) Thy-1-transfected cells. The Thy-1-binding protein may participate in axonal or dendritic development in the nervous system.