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Preprint
Cytokine and Chemokine Receptor Profiles in Adipose Tissue Vasculature Unravel Endothelial Cell Responses in HIV
bioRxiv : the preprint server for biology
Cold Spring Harbor Laboratory
2024
PMID: 38559150
Abstract
Chronic systemic inflammation contributes to a substantially elevated risk of myocardial infarction in people living with HIV (PLWH). Endothelial cell dysfunction disrupts vascular homeostasis regulation, increasing the risk of vasoconstriction, inflammation, and thrombosis that contribute to cardiovascular disease. Our objective was to study the effects of plasma from PLWH on endothelial cell (EC) function, with the hypothesis that cytokines and chemokines are major drivers of EC activation. We first broadly phenotyped chemokine and cytokine receptor expression on arterial ECs, capillary ECs, venous ECs, and vascular smooth muscle cells (VSMCs) in adipose tissue in the subcutaneous adipose tissue of 59 PLWH using single cell transcriptomic analysis. We used CellChat to predict cell-cell interactions between ECs and other cells in the adipose tissue and Spearman correlation to measure the association between ECs and plasma cytokines. Finally, we cultured human arterial ECs (HAECs) in plasma-conditioned media from PLWH and performed bulk sequencing to study the direct effects ex-vivo. We observed that arterial and capillary ECs expressed higher interferon and tumor necrosis factor (TNF) receptors. Venous ECs had more interleukin (IL)-1R1 and ACKR1 receptors, and VSMCs had high significant IL-6R expression. CellChat predicted ligand-receptor interactions between adipose tissue immune cells as senders and capillary ECs as recipients in TNF-TNFRSF1A/B interactions. Chemokines expressed largely by capillary ECs were predicted to bind ACKR1 receptors on venous ECs. Beyond the adipose tissue, the proportion of venous ECs and VSMCs were positively plasma IL-6. In ex-vivo experiments, HAECs cultured with plasma-conditioned media from PLWH expressed transcripts that enriched for the TNF-α and reactive oxidative phosphorylation pathways. In conclusion, ECs demonstrate heterogeneity in cytokine and chemokine receptor expression. Further research is needed to fully elucidate the role of cytokines and chemokines in EC dysfunction and to develop effective therapeutic strategies.
Details
- Title
- Cytokine and Chemokine Receptor Profiles in Adipose Tissue Vasculature Unravel Endothelial Cell Responses in HIV
- Authors/Creators
- Laventa M ObareStephen PriestAnas IsmaelMona Mashayekhi - Vanderbilt University Medical CenterXiuqi ZhangLindsey K StolzeQuanhu ShengZer VueKit NeikirkHeather BeasleyCurtis Gabriel - Vanderbilt University Medical CenterTecla TemuSara GianellaSimon MallalJohn R Koethe - Vanderbilt University Medical CenterAntentor HintonSamuel Bailin - Vanderbilt University Medical CenterCelestine N Wanjalla - Vanderbilt University Medical Center
- Publication Details
- bioRxiv : the preprint server for biology
- Publisher
- Cold Spring Harbor Laboratory; United States
- Identifiers
- 991005652869607891
- Copyright
- The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.
- Murdoch Affiliation
- Institute for Immunology and Infectious Diseases
- Language
- English
- Resource Type
- Preprint
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