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Characterizing the Capacity of Acinetobacter calcoaceticusto Grow in Intestinal Conditions and Modulate the Gut Epithelium

Acinetobacter species can occupy several ecological niches, including the mammalian intestine. Acinetobacter has been identified in the human fecal microbiota and it is speculated that the gut can serve as a reservoir for this pathobiont. The Acinetobacter calcoaceticus–Acinetobacter baumannii complex is a common cause of drug‐resistant pneumonia, urinary tract, skin and soft tissue infections. A. calcoaceticus has been considered to have relatively low virulence compared to its counterpart A. baumannii since colonization is more frequently noted more than infection clinically. However, few studies have dissected the interaction between A. calcoaceticus and the host, particularly in the gut. In this study, we sought to examine the ability of A. calcoaceticus strains to survive environmental stressors found in the gut. We also examined the reciprocal interactions of A. calcoaceticus strains on the host using colonic organoids.