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- Document 0405
- DOCN M9620405
- TI Functional characterization of human immunodeficiency virus type 1 nef
- genes in patients with divergent rates of disease progression.
- DT 9602
- AU Michael NL; Chang G; d'Arcy LA; Tseng CJ; Birx DL; Sheppard HW; Division
- of Retrovirology, Walter Reed Army Institute of; Research, Rockville,
- Maryland 20850, USA.
- SO J Virol. 1995 Nov;69(11):6758-69. Unique Identifier : AIDSLINE
- MED/96013770
- AB We have studied the sequence and function of the human immunodeficiency
- virus type 1 (HIV-1) nef genes from nine patients with highly divergent
- rates of disease progression enrolled in a longitudinal study of HIV
- disease. Over an average of 7.8 years of follow-up, three patients had
- net positive changes in CD4+ T-cell counts, three patients had net
- negative changes in CD4+ T cells but did not develop AIDS, and three
- patients progressed to AIDS. The nef gene from each of these patients
- was amplified and cloned, and the sequence of 8 to 10 clones was
- determined. Only 2 of 88 (2.3%) nef genes recovered from these nine
- patients were grossly defective. Moreover, there was no relationship
- between the phylogeny of nef sequences and the corresponding rates of
- disease progression from these patients. Representative nef genes from
- all nine patients were tested for their abilities to downregulate cell
- surface CD4 in a transient-transfection assay. There was no correlation
- found between the functions of the nef genes from these patients and
- their corresponding rates of disease progression. We conclude that the
- nef gene is not a common mediator of the rate of HIV disease progression
- in natural infection.
- DE Acquired Immunodeficiency Syndrome/IMMUNOLOGY/VIROLOGY Adult Amino
- Acid Sequence Base Sequence Comparative Study CD4 Lymphocyte Count
- Disease Progression DNA Primers Follow-Up Studies *Genes, nef Human
- HIV Infections/*IMMUNOLOGY/*VIROLOGY HIV
- Seropositivity/*IMMUNOLOGY/*VIROLOGY HIV-1/*GENETICS Male Middle Age
- Molecular Sequence Data Phylogeny Polymerase Chain Reaction Support,
- U.S. Gov't, P.H.S. Time Factors Transfection Variation (Genetics)
- JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-