Cited by 29Cholesterol and Lipid MetabolismHIV Research and TreatmentAlzheimer's disease research and treatments

Dysregulation of Neuronal Cholesterol Homeostasis upon Exposure to HIV-1 Tat and Cocaine Revealed by RNA-Sequencing

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Mohseni Ahooyi, Taha, Shekarabi, Masoud, Torkzaban, Bahareh, Langford, T. Dianne, Burdo, Tricia H., Gordon, Jennifer, Datta, Prasun K., Amini, Shohreh +1 more·2018·Scientific Reports

Abstract

HIV-1 Tat protein is released from HIV-1-infected cells and can enter non-permissive cells including neurons. Tat disrupts neuronal homeostasis and may contribute to the neuropathogenesis in people living with HIV (PLWH). The use of cocaine by PLWH exacerbates neuronal dysfunction. Here, we examined the mechanisms by which Tat and cocaine facilitate alterations in neuronal homeostatic processes. Bioinformatic interrogation of the results from RNA deep sequencing of rat hippocampal neurons exposed to Tat alone indicated the dysregulation of several genes involved in lipid and cholesterol metabolism. Following exposure to Tat and cocaine, the activation of cholesterol biosynthesis genes led to increased levels of free cholesterol and cholesteryl esters in rat neurons. Results from lipid metabolism arrays validated upregulation of several processes implicated in the biogenesis of β-amyloid and Alzheimer’s disease (AD), including sterol o-acyltransferase 1/acetyl-coenzyme A acyltransferase 1 (SOAT1/ACAT1), sortilin-related receptor L1 (SORL1) and low-density lipoprotein receptor-related protein 12 (LRP12). Further studies in Tat-treated primary neuronal cultures and brain tissues from HIV-1 transgenic mice as well as SIV-infected macaques confirmed elevated levels of SOAT1/ACAT 1 proteins. Our results offer novel insights into the molecular events involved in HIV and cocaine-mediated neuronal dysfunction that may also contribute to neuropathogenic events associated with the development of AD.

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  1. [12]Ances, B. M. & Ellis, R. J. In Seminars in neurology. 086-092 (Copyright© 2007 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.).

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Authors
Mohseni Ahooyi, T., Shekarabi, M., Torkzaban, B., Langford, T. D., Burdo, T. H., Gordon, J., Datta, P. K., Amini, S., & Khalili, K.
Affiliations
Temple University (US)
Corresponding author
Khalili, Kamel
Venue
Scientific Reports
Published
2018-11-02
Volume
8
Issue
1
Pages
16300-16300
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2899176553
Cited by
29
References
77
Citations by year
2026: 1 · 2024: 6 · 2023: 3 · 2022: 4 · 2021: 6 · 2020: 6 · 2019: 3
FWCI
3.90
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • TUScholarShare (Temple University) (submittedVersion, cc-by)
Funders
  • U.S. Department of Health & Human Services | National Institutes of Health (P30MH092177)
  • U.S. Department of Health & Human Services | NIH | National Institute of Mental Health (P30MH092177)
  • U.S. Department of Health & Human Services | NIH | National Institute on Drug Abuse (P01DA037830, R01DA042706, R01DA013137)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
HIV-1 Tat protein, cocaine, lipid metabolism, cholesterol biosynthesis, free cholesterol, cholesterol esters, SORL1, LRP12, Alzheimer's disease, HIV-associated neurocognitive disorders, hippocampal neurons, HIV neuropathogenesis
MeSH terms
Animals, Cells, Cultured, Cholesterol, Cocaine, Disease Models, Animal, Hippocampus, Humans, Macaca mulatta, Mice, Transgenic, Neurons, HIV-1, AIDS Dementia Complex, Sequence Analysis, RNA, Computational Biology, Cocaine-Related Disorders, Gene Expression Profiling, Lipid Metabolism, Mice, Rats, Biosynthetic Pathways, tat Gene Products, Human Immunodeficiency Virus, Primary Cell Culture

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