Protein isoforms encoded by the pX region of human T-cell leukemia/lymphotropic virus type I.

Protein isoforms encoded by the pX region of human T-cell leukemia/lymphotropic virus type I.

The pX region of the human T-cell leukemia/lymphotropic virus type I (HTLV-I) contains at least four open reading frames (orfI-orfIV). orf III and orf IV encode the regulatory HTLV-I proteins Rex and Tax, which together modulate viral expression, and the p21rex protein of unknown function. By using the reverse transcriptase and polymerase chain reaction techniques on the RNA of an HTLV-I-infect...

Study of the Association Between Human T-cell Lymphotropic Virus Type I Infection and Lichen Planus

trans-activation of the simian virus 40 enhancer by a pX product of human T-cell leukemia virus type I.

A trans-acting factor, p40, of human T-cell leukemia virus type I profoundly potentiated the function of the enhancer from simian virus 40 but not polyomavirus and Rous sarcoma and murine sarcoma viruses. This trans-activation was seen in a limited repertoire of cells, in contrast to trans-activation of the human T-cell leukemia virus type I enhancer by p40.

Human T Lymphotropic Virus Type I (HTLV-I) Oncogenesis: Molecular Aspects of Virus and Host Interactions in Pathogenesis of Adult T cell Leukemia/Lymphoma (ATL)

    The study of tumor viruses paves the way for understanding the mechanisms of virus pathogenesis, including those involved in establishing infection and dissemination in the host tumor affecting immune-compromised patients. The processes ranging from viral infection to progressing malignancy are slow and usually insufficient for establishment of transformed cells that develop cancer in only ...

Human T-cell lymphotropic virus-type I.

HTLV-I is a retrovirus now identified as the etiologic agent of two diverse disease processes: ATLL, an aggressive T-cell malignancy; and TSP/HAM, a chronic progressive myelopathy. Transmission can occur horizontally through blood transfusions, IV drug abuse and sexual intercourse. Vertical transmission may also occur. Available diagnostic modalities are serologic in nature and include the EIA ...