Activated mouse T-cells synthesize MHC class II, process, and present morbillivirus nucleocapsid protein to primed T-cells

Lal, Girdhari and Shaila, MS and Nayak, Rabindranath (2005) Activated mouse T-cells synthesize MHC class II, process, and present morbillivirus nucleocapsid protein to primed T-cells. In: Cellular Immunology, 234 (2). pp. 133-145.

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Abstract

A pivotal step in the initiation of T-cell immunity is the presentation of antigenic peptides by major histocompatibility complex (MHC) expressed on antigen presenting cells. The expression of MHC class 11 molecules by mouse T-cells has not been shown unequivocally. In the present work, we demonstrate that activated mouse T-cells synthesize MHC class 11 molecules de novo and express them on their surface.Further, we have demonstrated that in vitro activated T-cells take up extra-cellular soluble nucleocapsid protein of a morbillivirus. The internalized antigen goes to antigen processing compartment as shown by co-localization of antigen and LAMP-1 using confocal microscopy. We show that activated T-cells express H2M, a chaperone molecule known to have a role in antigen presentation. Further, we demonstrate that activated T-cells process and present internalized extra-cellular antigen to primed T-cells as shown by IL-2 secretion and in vitro proliferation. The presentation of antigen by T-cells may have implications in immuno-regulation, control of infection by lymphotropic viruses and maintenance of immunological memory.

Item Type:	Journal Article
Publication:	Cellular Immunology
Publisher:	Academic Press Inc Elsevier Science
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	T-APC;Major histocompatibility complex II;Antigen presentation;CIITA
Department/Centre:	Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited:	11 Oct 2005
Last Modified:	19 Sep 2010 04:20
URI:	http://eprints.iisc.ac.in/id/eprint/3818

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