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Molecular characterization of bat embryonic fibroblasts, induced pluripotent stem cells and their differentiated progeny [RNA-Seq]

ABSTRACT: Gene expression studies in bat fibroblasts, pluripotent stem cells, and their differentiated progeny.

ORGANISM(S): Rhinolophus ferrumequinum

PROVIDER: GSE221963 | GEO | 2023/02/27

REPOSITORIES: GEO

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Abortive infection of bat fibroblasts with SARS-CoV-2

Project description:Bats are tolerant to highly pathogenic viruses such as Marburg, Ebola, and Nipah, suggesting the presence of a unique immune tolerance toward viral infection. Here, we compared SARS-CoV-2 infection of human and bat (Rhinolophus ferrumequinum) pluripotent cells and fibroblasts. Since bat cells do not express an ACE2 receptor that allows virus infection, we transduced the human ACE2 receptor into the cells and found that transduced cells can be infected with SARS-CoV-2. Compared to human ESCs-hA, infected bat iPSCs-hA produced about a 100-fold lower level of infectious virus and displayed lower toxicity. In contrast, bat fibroblasts (BEF-hA) produced no infectious virus while being infectable and synthesizing viral RNA and proteins, suggesting abortive infection. Indeed, electron microscopy failed to detect virus-like particles in infected bat fibroblasts in contrast to bat iPSCs or human cells, consistent with the latter producing infectious viruses. This suggests that bat somatic but not pluripotent cells have an effective mechanism to control virus replication. Consistent with previous results by others, we find that bat cells have a constitutively activated innate immune system, which might limit SARS-CoV-2 infection compared to human cells.

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