Deciphering the molecular mechanisms involved in HIV-associated lipoatrophy by transcriptomics: a pilot study

Area of Science:

• Immunology
• Genetics
• Metabolic Diseases

Background:

• HIV-associated lipoatrophy (LA) significantly impacts patient health and treatment adherence, particularly in resource-limited settings.
• Understanding LA's pathophysiology is crucial for developing new treatments and diagnostic tools.
• Existing diagnostic methods for LA lack speed and accuracy for early detection.

Purpose of the Study:

• To investigate the functional gene classes involved in HIV-associated lipoatrophy.
• To identify potential novel biomarkers for accurate and rapid diagnosis of LA.
• To explore early markers for predicting future complications associated with LA.

Main Methods:

• Transcriptomic analysis of mRNA from peripheral blood mononuclear cells (PBMCs) of HIV patients with and without lipoatrophy.
• Gene Ontology analysis to determine functional pathways of differentially expressed genes.
• Quantitative PCR (qPCR) to validate RNA sequencing findings.

Main Results:

• 55 genes were found to be differentially expressed between LA and non-LA HIV patients.
• Overexpressed genes in LA patients are associated with inflammation, lymphocyte/neutrophil activation, and atherogenesis.
• Repressed genes in LA patients are linked to angiogenesis and myocardial infarction protection.

Conclusions:

• A distinct transcriptomic signature exists in PBMCs of HIV-associated lipoatrophy patients.
• These findings provide novel insights into the pathogenesis of HIV-associated lipoatrophy.
• Identified genes may serve as early diagnostic markers for LA and its future complications.