RT Journal Article SR Electronic T1 Bat pluripotent stem cells reveal unique entanglement between host and viruses JF bioRxiv FD Cold Spring Harbor Laboratory SP 2022.09.23.509261 DO 10.1101/2022.09.23.509261 A1 Marion Déjosez A1 Arturo Marin A1 Graham M. Hughes A1 Ariadna E. Morales A1 Carlos Godoy-Parejo A1 Jonathan Gray A1 Yiren Qin A1 Arun A. Singh A1 Hui Xu A1 Javier Juste A1 Carlos Ibáñez A1 Kris M. White A1 Romel Rosales A1 Nancy J. Francoeur A1 Robert P. Sebra A1 Dominic Alcock A1 Sébastien J. Puechmaille A1 Andrzej Pastusiak A1 Simon D.W. Frost A1 Michael Hiller A1 Richard A. Young A1 Emma C. Teeling A1 Adolfo García-Sastre A1 Thomas P. Zwaka YR 2022 UL http://biorxiv.org/content/early/2022/09/26/2022.09.23.509261.abstract AB Bats have evolved features unique amongst mammals, including flight, laryngeal echolocation, and certain species have been shown to have a unique immune response that may enable them to tolerate viruses such as SARS-CoVs, MERS-CoVs, Nipah, and Marburg viruses. Robust cellular models have yet to be developed for bats, hindering our ability to further understand their special biology and handling of viral pathogens. To establish bats as new model study species, we generated induced pluripotent stem cells (iPSCs) from a wild greater horseshoe bat (Rhinolophus ferrumequinum) using a modified Yamanaka protocol. Rhinolophids are amongst the longest living bat species and are asymptomatic carriers of coronaviruses, including one of the viruses most closely related to SARS-CoV-2. Bat induced pluripotent stem (BiPS) cells were stable in culture, readily differentiated into all three germ layers, and formed complex embryoid bodies, including organoids. The BiPS cells were found to have a core pluripotency gene expression program similar to that of other species, but it also resembled that of cells attacked by viruses. The BiPS cells produced a rich set of diverse endogenized viral sequences and in particular retroviruses. We further validated our protocol by developing iPS cells from an evolutionary distant bat species Myotis myotis (greater mouse-eared bat) non-lethally sampled in the wild, which exhibited similar attributes to the greater horseshoe bat iPS cells, suggesting that this unique pluripotent state evolved in the ancestral bat lineage. Although previous studies have suggested that bats have developed powerful strategies to tame their inflammatory response, our results argue that they have also evolved mechanisms to accommodate a substantial load of endogenous viral sequences and suggest that the natural history of bats and viruses is more profoundly intertwined than previously thought. Further study of bat iPS cells and their differentiated progeny should advance our understanding of the role bats play as virus hosts, provide a novel method of disease surveillance, and enable the functional studies required to ascertain the molecular basis of bats’ unique traits.Competing Interest StatementTPZ, MD and AGS are inventors on patents and patent applications on the use of bat iPSCs, owned by the Icahn School of Medicine at Mount Sinai, New York. TPZ and RAY are the founders of Paratus Sciences and owns stock in the company. The AGS laboratory has received research support from Pfizer, Senhwa Biosciences, Kenall Manufacturing, Avimex, Johnson & Johnson, Dynavax, 7Hills Pharma, Pharmamar, ImmunityBio, Accurius, Nanocomposix, Hexamer, N-fold LLC, Model Medicines, and Merck, outside of the reported work. AGS has consulting agreements for the following companies involving cash and/or stock: Vivaldi Biosciences, Contrafect, 7Hills Pharma, Avimex, Vaxalto, Pagoda, Accurius, Esperovax, Farmak, Applied Biological Laboratories and Pfizer, outside of the reported work. AGS is inventor on patents and patent applications on the use of antivirals and vaccines for the treatment and prevention of virus infections and cancer, owned by the Icahn School of Medicine at Mount Sinai, New York, outside of the reported work. AM is the creator of Omics Bioinformatics and owns all the stocks of this company.