GSBS Student Publications
Title
Localization of HIV RNA in mitochondria of infected cells: potential role in cytopathogenicity
GSBS Program
Biochemistry & Molecular Pharmacology
Publication Date
1994-09-01
UMMS Affiliation
Graduate School of Biomedical Sciences; Program in Molecular Medicine; Department of Pediatrics
Document Type
Article
Disciplines
Life Sciences | Medicine and Health Sciences
Abstract
The intracellular distribution of HIV-1 RNA transcripts in infected cells was studied using in situ hybridization detected by electron microscopy and cellular fractionation. Although viral RNA and core protein could be detected throughout the cytoplasm and nucleus, viral RNA was found in significantly increased amounts in mitochondria relative to the cytoplasm and nucleus. In contrast, cellular poly(A) RNA or viral gag proteins were not increased in the mitochondria. A cell line containing an integrated latent genome that could be induced to express viral RNA after phorbol ester stimulation showed an increase in viral RNA accumulation in mitochondria parallel with the increase in HIV expression levels. Concomitant with HIV expression, there was a decrease in mitochondrial viability. Using immunofluorescent markers to detect probes to HIV RNA transcripts and antibodies to mitochondrial proteins simultaneously in single cells, there was an inverse relationship between the amount of viral RNA and mitochondrial integrity. High levels of viral RNA in mitochondria were found in acutely (but not chronically) infected cells. We propose that HIV RNA import into mitochondria can compromise mitochondrial function.
DOI of Published Version
10.1083/jcb.126.6.1353
Source
J Cell Biol. 1994 Sep;126(6):1353-60.
Journal/Book/Conference Title
The Journal of cell biology
Related Resources
PubMed ID
8089170
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.
Repository Citation
Somasundaran M, Zapp ML, Beattie LK, Pang L, Byron KS, Bassell GJ, Sullivan JL, Singer RH. (1994). Localization of HIV RNA in mitochondria of infected cells: potential role in cytopathogenicity. GSBS Student Publications. https://doi.org/10.1083/jcb.126.6.1353. Retrieved from https://escholarship.umassmed.edu/gsbs_sp/1141