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Though EBNA1 is a well-characterized protein, its role in oncogenesis is less well defined. It is consistently expressed in EBV-associated tumors. [1] EBNA1 is the only identified latent protein-encoding genes that it consistently expressed in Burkitt's lymphoma cells [6] and is believed to contribute to EBV malignancies through B cell-directed expression.
EBV-positive reactive lymphoid hyperplasia (or EBV-positive reactive lymphoid proliferation) is a benign form of lymphadenopathy, i.e. swollen, often painful lymph nodes. The disorder is based on histologic findings that occur in the lymphoid tissue of mainly older individuals who were infected with EBV many years earlier.
EBNA-1: latent+lytic EBNA-1 protein binds to a replication origin (oriP) within the viral genome and mediates replication and partitioning of the episome during division of the host cell. It is the only viral protein expressed during group I latency. EBNA-2: latent+lytic EBNA-2 is the main viral transactivator. EBNA-3: latent+lytic
EBNA2 requires C-promoter binding factor 1 (CBF1) to aid in binding to its cis-responsive DNA element, the C promoter (Cp). [1] [4] Binding occurs during infection, to generate a 120kb transcript that encodes all nuclear antigens required for immortalization by EBV.2 Mutation of EBNA2 amino acid 323 and 324, which are located within a highly conserved amino acid motif, abolished the ...
The mononuclear spot test or monospot test, a form of the heterophile antibody test, [1] is a rapid test for infectious mononucleosis due to Epstein–Barr virus (EBV). It is an improvement on the Paul–Bunnell test. [2] The test is specific for heterophile antibodies produced by the human immune system in response to EBV
Antibody to EBNA slowly appears 2 to 4 months after the onset of symptoms and persists for the rest of a person’s life. [10] When negative, these tests are more accurate than the heterophile antibody test in ruling out infectious mononucleosis. When positive, they feature similar specificity to the heterophile antibody test.
Apoptosis is limited by EBV through various means such as the EBNA-1 protein, BHF1 protein, EBER transcripts, vIL-10 gene, BZLF1, and LMP1. [16] Malaria has been found to cause genomic instability in endemic Burkitt lymphoma. [20] Malaria can lead to the reactivation of latent EBV and also MYC translocations via activation of the toll-like ...
There are several forms of Epstein–Barr virus (EBV) infection. These include asymptomatic infections, the primary infection, infectious mononucleosis, and the progression of asymptomatic or primary infections to: 1) any one of various Epstein–Barr virus-associated lymphoproliferative diseases such as chronic active EBV infection, EBV+ hemophagocytic lymphohistiocytosis, Burkitt's lymphoma ...