Biomaterial Database

Cytomegalovirus and transcriptional down-regulation of major histocompatibility complex class II expression. 2001

D M Miller, and C M Cebulla, and B M Rahill, and D D Sedmak

Department of Pathology, The Ohio State University College of Medicine and Public Health, Columbus, OH 43210, USA.

CD4(+)T lymphocytes are a significant component of the afferent and efferent arms of adaptive immunity and are critical for controlling viral infections. CD4(+)T lymphocytes secrete cytokines that augment CD8(+)T lymphocyte and B lymphocyte responses and directly inhibit viral replication. The interface between the CD4(+)T lymphocyte and virus is the major histocompatibility complex (MHC) class II molecule. Cytomegalovirus, a beta-herpesvirus, has evolved mechanisms for inhibiting MHC class II expression and thus escaping CD4(+)T lymphocyte immunosurveillance. Herein, we review cytomegalovirus-mediated down-regulation of inducible and constitutive MHC class II expression, while focusing on lesions that occur at the level of MHC class II transcription.

UI	MeSH Term	Description	Entries
D003586	Cytomegalovirus Infections	Infection with CYTOMEGALOVIRUS, characterized by enlarged cells bearing intranuclear inclusions. Infection may be in almost any organ, but the salivary glands are the most common site in children, as are the lungs in adults.	CMV Inclusion,CMV Inclusions,Congenital CMV Infection,Congenital Cytomegalovirus Infection,Cytomegalic Inclusion Disease,Cytomegalovirus Colitis,Cytomegalovirus Inclusion,Cytomegalovirus Inclusion Disease,Cytomegalovirus Inclusions,Inclusion Disease,Perinatal CMV Infection,Perinatal Cytomegalovirus Infection,Renal Tubular Cytomegalovirus Inclusion,Renal Tubular Cytomegalovirus Inclusions,Salivary Gland Virus Disease,Severe Cytomegalovirus Infection,Severe Cytomegalovirus Infections,Infections, Cytomegalovirus,CMV Infection, Congenital,CMV Infection, Perinatal,Colitis, Cytomegalovirus,Congenital CMV Infections,Congenital Cytomegalovirus Infections,Cytomegalic Inclusion Diseases,Cytomegalovirus Colitides,Cytomegalovirus Inclusion Diseases,Cytomegalovirus Infection,Cytomegalovirus Infection, Congenital,Cytomegalovirus Infection, Perinatal,Cytomegalovirus Infection, Severe,Cytomegalovirus Infections, Severe,Disease, Cytomegalic Inclusion,Disease, Cytomegalovirus Inclusion,Diseases, Cytomegalovirus Inclusion,Inclusion Disease, Cytomegalic,Inclusion Disease, Cytomegalovirus,Inclusion Diseases,Inclusion Diseases, Cytomegalovirus,Inclusion, CMV,Inclusion, Cytomegalovirus,Infection, Congenital CMV,Infection, Congenital Cytomegalovirus,Infection, Cytomegalovirus,Infection, Perinatal CMV,Infection, Perinatal Cytomegalovirus,Infection, Severe Cytomegalovirus,Perinatal CMV Infections,Perinatal Cytomegalovirus Infections
D003587	Cytomegalovirus	A genus of the family HERPESVIRIDAE, subfamily BETAHERPESVIRINAE, infecting the salivary glands, liver, spleen, lungs, eyes, and other organs, in which they produce characteristically enlarged cells with intranuclear inclusions. Infection with Cytomegalovirus is also seen as an opportunistic infection in AIDS.	Herpesvirus 5, Human,Human Herpesvirus 5,Salivary Gland Viruses,HHV 5,Herpesvirus 5 (beta), Human,Cytomegaloviruses,Salivary Gland Virus,Virus, Salivary Gland,Viruses, Salivary Gland
D005802	Genes, MHC Class II	Genetic loci in the vertebrate major histocompatibility complex that encode polymorphic products which control the immune response to specific antigens. The genes are found in the HLA-D region in humans and include H-2M, I-A, and I-E loci in mice.	Class II Genes,Genes, Class II,Genes, HLA Class II,MHC Class II Genes,Class II Gene,Gene, Class II
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000949	Histocompatibility Antigens Class II	Large, transmembrane, non-covalently linked glycoproteins (alpha and beta). Both chains can be polymorphic although there is more structural variation in the beta chains. The class II antigens in humans are called HLA-D ANTIGENS and are coded by a gene on chromosome 6. In mice, two genes named IA and IE on chromosome 17 code for the H-2 antigens. The antigens are found on B-lymphocytes, macrophages, epidermal cells, and sperm and are thought to mediate the competence of and cellular cooperation in the immune response. The term IA antigens used to refer only to the proteins encoded by the IA genes in the mouse, but is now used as a generic term for any class II histocompatibility antigen.	Antigens, Immune Response,Class II Antigens,Class II Histocompatibility Antigen,Class II Major Histocompatibility Antigen,Ia Antigens,Ia-Like Antigen,Ia-Like Antigens,Immune Response Antigens,Immune-Associated Antigens,Immune-Response-Associated Antigens,MHC Class II Molecule,MHC II Peptide,Class II Antigen,Class II Histocompatibility Antigens,Class II MHC Proteins,Class II Major Histocompatibility Antigens,Class II Major Histocompatibility Molecules,I-A Antigen,I-A-Antigen,IA Antigen,MHC Class II Molecules,MHC II Peptides,MHC-II Molecules,Antigen, Class II,Antigen, I-A,Antigen, IA,Antigen, Ia-Like,Antigens, Class II,Antigens, Ia,Antigens, Ia-Like,Antigens, Immune-Associated,Antigens, Immune-Response-Associated,I A Antigen,II Peptide, MHC,Ia Like Antigen,Ia Like Antigens,Immune Associated Antigens,Immune Response Associated Antigens,MHC II Molecules,Molecules, MHC-II,Peptide, MHC II,Peptides, MHC II
D014158	Transcription, Genetic	The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.	Genetic Transcription
D015536	Down-Regulation	A negative regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins.	Receptor Down-Regulation,Down-Regulation (Physiology),Downregulation,Down Regulation,Down-Regulation, Receptor