Publication Date:
1999-10-09
Description:
The effect of the Epstein-Barr virus (EBV) latent membrane protein 1 (LMP1) on the activation and differentiation of normal B cells was investigated. B cells of transgenic mice expressing LMP1 under the control of immunoglobulin promoter/enhancer displayed enhanced expression of activation antigens and spontaneously proliferated and produced antibody. Humoral immune responses of LMP1 transgenic mice in CD40-deficient or normal backgrounds revealed that LMP1 mimics CD40 signals to induce extrafollicular B cell differentiation but, unlike CD40, blocks germinal center formation. Thus, these specific properties of LMP1 may determine the site of primary B cell infection and the state of infection in the natural course of EBV infection, whereas subsequent loss of LMP1 expression may affect the site of persistent latent infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Uchida, J -- Yasui, T -- Takaoka-Shichijo, Y -- Muraoka, M -- Kulwichit, W -- Raab-Traub, N -- Kikutani, H -- CA19014/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Oct 8;286(5438):300-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10514374" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Antibody Affinity
;
Antigens, CD40/genetics/*metabolism
;
B-Lymphocytes/*immunology/metabolism/virology
;
Cell Differentiation
;
Female
;
Germinal Center/immunology/metabolism
;
Herpesvirus 4, Human/*metabolism/physiology
;
Immunization
;
Immunoglobulin Class Switching
;
Immunoglobulins/biosynthesis
;
Interleukin-4/pharmacology
;
*Lymphocyte Activation
;
Male
;
Mice
;
Mice, Inbred C57BL
;
Mice, Transgenic
;
*Molecular Mimicry
;
NF-kappa B/metabolism
;
Signal Transduction
;
Spleen/immunology
;
Viral Matrix Proteins/genetics/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
