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Nature Research, Nature Communications, 1(13), 2022

DOI: 10.1038/s41467-022-33218-8

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SARS-CoV-2 infects adipose tissue in a fat depot- and viral lineage-dependent manner

Journal article published in 2022 by Tatiana Dandolini Saccon, Felippe Mousovich-Neto ORCID, Raissa Guimarães Ludwig, Victor Corasolla Carregari ORCID, Ana Beatriz dos Anjos Souza, Amanda Stephane Cruz dos Passos ORCID, Matheus Cavalheiro Martini, Priscilla Paschoal Barbosa, Gabriela Fabiano de Souza, Stéfanie Primon Muraro ORCID, Julia Forato ORCID, Mariene Ribeiro Amorim, Rafael Elias Marques ORCID, Flavio Protasio Veras, Ester Barreto ORCID and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractVisceral adiposity is a risk factor for severe COVID-19, and a link between adipose tissue infection and disease progression has been proposed. Here we demonstrate that SARS-CoV-2 infects human adipose tissue and undergoes productive infection in fat cells. However, susceptibility to infection and the cellular response depends on the anatomical origin of the cells and the viral lineage. Visceral fat cells express more ACE2 and are more susceptible to SARS-CoV-2 infection than their subcutaneous counterparts. SARS-CoV-2 infection leads to inhibition of lipolysis in subcutaneous fat cells, while in visceral fat cells, it results in higher expression of pro-inflammatory cytokines. Viral load and cellular response are attenuated when visceral fat cells are infected with the SARS-CoV-2 gamma variant. A similar degree of cell death occurs 4-days after SARS-CoV-2 infection, regardless of the cell origin or viral lineage. Hence, SARS-CoV-2 infects human fat cells, replicating and altering cell function and viability in a depot- and viral lineage-dependent fashion.