Meek, S. and Watson, T. and Eory, L. and McFarlane, G. and Wynne, F.J. and McCleary, S. and Dunn, L.E.M. and Charlton, E.M. and Craig, C. and Shih, B. and Regan, T. and Taylor, R. and Sutherland, L. and Gossner, A. and Chintoan-Uta, C. and Fletcher, S. and Beard, P.M. and Hassan, M.A. and Grey, F. and Hope, J.C. and Stevens, M.P. and Nowak-Imialek, M. and Niemann, H. and Ross, P.J. and Tait-Burkard, C. and Brown, S.M. and Lefevre, L. and Thomson, G. and McColl, B.W. and Lawrence, A.B. and Archibald, A.L. and Steinbach, F. and Crooke, H.R. and Gao, X. and Liu, P. and Burdon, T. (2022) Stem cell-derived porcine macrophages as a new platform for studying host-pathogen interactions. BMC Biology, 20 (1): 14. ISSN 1741-7007
Full text not available from this repository.Abstract
BACKGROUND: Infectious diseases of farmed and wild animals pose a recurrent threat to food security and human health. The macrophage, a key component of the innate immune system, is the first line of defence against many infectious agents and plays a major role in shaping the adaptive immune response. However, this phagocyte is a target and host for many pathogens. Understanding the molecular basis of interactions between macrophages and pathogens is therefore crucial for the development of effective strategies to combat important infectious diseases. RESULTS: We explored how porcine pluripotent stem cells (PSCs) can provide a limitless in vitro supply of genetically and experimentally tractable macrophages. Porcine PSC-derived macrophages (PSCdMs) exhibited molecular and functional characteristics of ex vivo primary macrophages and were productively infected by pig pathogens, including porcine reproductive and respiratory syndrome virus (PRRSV) and African swine fever virus (ASFV), two of the most economically important and devastating viruses in pig farming. Moreover, porcine PSCdMs were readily amenable to genetic modification by CRISPR/Cas9 gene editing applied either in parental stem cells or directly in the macrophages by lentiviral vector transduction. CONCLUSIONS: We show that porcine PSCdMs exhibit key macrophage characteristics, including infection by a range of commercially relevant pig pathogens. In addition, genetic engineering of PSCs and PSCdMs affords new opportunities for functional analysis of macrophage biology in an important livestock species. PSCs and differentiated derivatives should therefore represent a useful and ethical experimental platform to investigate the genetic and molecular basis of host-pathogen interactions in pigs, and also have wider applications in livestock.