PMID- 35315960 OWN - NLM STAT- MEDLINE DCOM- 20220422 LR - 20220422 IS - 1530-6860 (Electronic) IS - 0892-6638 (Linking) VI - 36 IP - 4 DP - 2022 Apr TI - Homozygous whole body Cbs knockout in adult mice features minimal pathology during ageing despite severe homocysteinemia. PG - e22260 LID - 10.1096/fj.202101550R [doi] AB - Deficiencies in Cystathionine-beta-synthase (CBS) lead to hyperhomocysteinemia (HHCy), which is considered a risk factor for cardiovascular, bone and neurological disease. Moreover, CBS is important for the production of cysteine, hydrogen sulfide (H(2) S) and glutathione. Studying the biological role of CBS in adult mice has been severely hampered by embryological disturbances and perinatal mortality. To overcome these issues and assess the effects of whole-body CBS deficiency in adult mice, we engineered and characterized a Cre-inducible Cbs knockout model during ageing. No perinatal mortality occurred before Cbs(-/-) induction at 10 weeks of age. Mice were followed until 90 weeks of age and ablation of Cbs was confirmed in liver and kidney but not in brain. Severe HHCy was observed in Cbs(-/-) (289 +/- 58 microM) but not in Cbs(+/-) or control mice (<10 microM). Cbs(-/-) showed impaired growth, facial alopecia, endothelial dysfunction in absence of increased mortality, and signs of liver or kidney damage. CBS expression in skin localized to sebaceous glands and epidermis, suggesting local effects of Cbs(-/-) on alopecia. Cbs(-/-) showed increased markers of oxidative stress and senescence but expression of other H(2) S producing enzymes (CSE and 3-MST) was not affected. CBS deficiency severely impaired H(2) S production capacity in liver, but not in brain or kidney. In summary, Cbs(-/-) mice presented a mild phenotype without mortality despite severe HHCy. The findings demonstrate that HHCy is not directly linked to development of end organ damage. CI - (c) 2022 The Authors. The FASEB Journal published by Wiley Periodicals LLC on behalf of Federation of American Societies for Experimental Biology. FAU - Nakladal, D AU - Nakladal D AUID- ORCID: 0000-0003-0900-0130 AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Lambooy, S P H AU - Lambooy SPH AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Misuth, S AU - Misuth S AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. AD - Department of Pharmacology & Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia. FAU - Cepcova, D AU - Cepcova D AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. AD - Department of Pharmacology & Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia. FAU - Joschko, C P AU - Joschko CP AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - van Buiten, A AU - van Buiten A AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Goris, M AU - Goris M AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Hoogstra-Berends, F AU - Hoogstra-Berends F AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Kloosterhuis, N J AU - Kloosterhuis NJ AD - Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Huijkman, N AU - Huijkman N AD - iPSC/CRISPR Center Groningen, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - van de Sluis, B AU - van de Sluis B AD - Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. AD - iPSC/CRISPR Center Groningen, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Diercks, G F AU - Diercks GF AD - Department of Dermatology, Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Buikema, J H AU - Buikema JH AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Henning, R H AU - Henning RH AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Deelman, L E AU - Deelman LE AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - FASEB J JT - FASEB journal : official publication of the Federation of American Societies for Experimental Biology JID - 8804484 RN - EC 4.2.1.22 (Cystathionine beta-Synthase) RN - YY9FVM7NSN (Hydrogen Sulfide) RN - Homocysteinemia SB - IM MH - Aging MH - Alopecia MH - Animals MH - Cystathionine beta-Synthase/genetics/metabolism MH - Disease Models, Animal MH - Female MH - *Homocystinuria/metabolism MH - *Hydrogen Sulfide/metabolism MH - *Hyperhomocysteinemia/genetics/metabolism MH - Mice MH - Mice, Knockout MH - Pregnancy OTO - NOTNLM OT - cystathionine beta synthase deficiency OT - hydrogen sulfide OT - hyperhomocysteinemia OT - inducible mouse model OT - vascular dysfunction EDAT- 2022/03/23 06:00 MHDA- 2022/04/23 06:00 CRDT- 2022/03/22 12:12 PHST- 2022/02/17 00:00 [revised] PHST- 2021/10/19 00:00 [received] PHST- 2022/03/07 00:00 [accepted] PHST- 2022/03/22 12:12 [entrez] PHST- 2022/03/23 06:00 [pubmed] PHST- 2022/04/23 06:00 [medline] AID - 10.1096/fj.202101550R [doi] PST - ppublish SO - FASEB J. 2022 Apr;36(4):e22260. doi: 10.1096/fj.202101550R.