PMID- 37485537 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230725 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 14 DP - 2023 TI - Circadian regulation of metabolic, cell division, and cation transport promoters in the gastrointestinal bacterium Klebsiella aerogenes. PG - 1181756 LID - 10.3389/fmicb.2023.1181756 [doi] LID - 1181756 AB - INTRODUCTION: All eukaryotes and at least some prokaryotes express the capacity to anticipate and adapt to daily changes of light and temperature in their environments. These circadian programs are fundamental features of many forms of life. Cyanobacteria were the first prokaryotes to have demonstrated circadian gene expression. Recently, a circadian rhythm was also discovered in an unrelated bacterium, Klebsiella aerogenes, a human gut commensal and nosocomial pathogen. METHODS: Here we characterize new clock-controlled genes with spatial differences in expression using a bacterial luciferase reporter. These include dephospho-coenzyme A kinase (coaE), manganese transporter, H-dependent (mntH) and a gene identified as filamenting temperature-sensitive mutant Z (ftsZ). RESULTS AND DISCUSSION: The data show that all three reporter constructs exhibited circadian variation, although only PmntH::luxCDABE reporter strains were synchronized by melatonin. Additionally, we show that K. aerogenes divides rhythmically in vitro and that these bacteria may alternate between exponential and stationary cells. Together, these findings provide a deeper understanding of K. aerogenes. CI - Copyright (c) 2023 Graniczkowska, Paulose and Cassone. FAU - Graniczkowska, Kinga B AU - Graniczkowska KB AD - Department of Biology, University of Kentucky, Lexington, KY, United States. FAU - Paulose, Jiffin K AU - Paulose JK AD - Division of Human Genetics, Cincinnati Children's Hospital, Cincinnati, OH, United States. FAU - Cassone, Vincent M AU - Cassone VM AD - Department of Biology, University of Kentucky, Lexington, KY, United States. LA - eng PT - Journal Article DEP - 20230705 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC10356819 OTO - NOTNLM OT - Klebsiella OT - circadian OT - gastrointestinal OT - melatonin OT - microbiome COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/07/24 06:42 MHDA- 2023/07/24 06:43 PMCR- 2023/07/05 CRDT- 2023/07/24 05:00 PHST- 2023/03/07 00:00 [received] PHST- 2023/05/29 00:00 [accepted] PHST- 2023/07/24 06:43 [medline] PHST- 2023/07/24 06:42 [pubmed] PHST- 2023/07/24 05:00 [entrez] PHST- 2023/07/05 00:00 [pmc-release] AID - 10.3389/fmicb.2023.1181756 [doi] PST - epublish SO - Front Microbiol. 2023 Jul 5;14:1181756. doi: 10.3389/fmicb.2023.1181756. eCollection 2023.