Microglia cause HIV-induced transcriptional and metabolic changes in human neural organoids

Pamela E. Capendale, Leanne C. Helgers, Anoop T. Ambikan, Renata Vieira de Sá, Katja C. Wolthers, Teunis B. H. Geijtenbeek, Adithya Sridhar, Ujjwal Neogi & Dasja Pajkrt 

Abstract

Human immunodeficiency virus(HIV) can invade the central nervous system during the initial stages of infection and contribute to HIV-associated neurocognitive disorder, affecting up to 50% of people living with HIV (PLWH). To investigate HIV-1–induced immunometabolic changes in the brain, we used a three-dimensional microglia-embedded human neural organoid model. Transcriptomic analysis and genome-scale metabolic modeling revealed that HIV-1 infection led to more pronounced transcriptional changes in the presence of microglia, including upregulation of pro-inflammatory pathways. We identified CCR6, important for HIV-1 permissiveness, to be significantly upregulated upon infection. Metabolic analysis showed increased expression in metabolite transport-related genes, including solute carrier (SLC) genes and altered amino acid metabolism, particularly involving arginine, proline, and tyrosine. These microglia-driven immunometabolic changes may contribute to neuronal dysregulation and, subsequently, neurological complications, which are often observed in PLWH. Early detection of these alterations could support timely therapeutic intervention to improve HIV-related neurologic insult.