PMID- 34361079 OWN - NLM STAT- MEDLINE DCOM- 20210813 LR - 20210813 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 15 DP - 2021 Aug 2 TI - Liver-Specific Overexpression of Prostasin Attenuates High-Fat Diet-Induced Metabolic Dysregulation in Mice. LID - 10.3390/ijms22158314 [doi] LID - 8314 AB - The liver has a most indispensable role in glucose and lipid metabolism where we see some of the most serious worldwide health problems. The serine protease prostasin (PRSS8) cleaves toll-like receptor 4 (TLR4) and regulates hepatic insulin sensitivity under PRSS8 knockout condition. However, liver substrate proteins of PRSS8 other than TLR4 and the effect to glucose and lipid metabolism remain unclarified with hepatic elevation of PRSS8 expression. Here we show that high-fat-diet-fed liver-specific PRSS8 transgenic mice improved glucose tolerance and hepatic steatosis independent of body weight. PRSS8 amplified extracellular signal-regulated kinase phosphorylation associated with matrix metalloproteinase 14 activation in vivo and in vitro. Moreover, in humans, serum PRSS8 levels reduced more in type 2 diabetes mellitus (T2DM) patients than healthy controls and were lower in T2DM patients with increased maximum carotid artery intima media thickness (>1.1 mm). These results identify the regulatory mechanisms of PRSS8 overexpression over glucose and lipid metabolism, as well as excessive hepatic fat storage. FAU - Sekine, Tetsuo AU - Sekine T AD - Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo 4093898, Japan. FAU - Takizawa, Soichi AU - Takizawa S AD - Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo 4093898, Japan. AD - Internal Medicine, Yamanashi Prefectural Central Hospital, Kofu 4008506, Japan. FAU - Uchimura, Kohei AU - Uchimura K AUID- ORCID: 0000-0003-2606-9762 AD - Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo 4093898, Japan. FAU - Miyazaki, Asako AU - Miyazaki A AD - Isawa Hot Spring Hospital, Fuefuki 4060023, Japan. FAU - Tsuchiya, Kyoichiro AU - Tsuchiya K AD - Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo 4093898, Japan. LA - eng GR - 20K08883/Japan Society for the Promotion of Science/ PT - Journal Article DEP - 20210802 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - EC 3.4.21.- (Serine Endopeptidases) RN - EC 3.4.21.- (prostasin) SB - IM MH - Animals MH - Body Weight MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/metabolism/*pathology MH - Diet, High-Fat/*adverse effects MH - Fatty Liver/etiology/metabolism/*pathology MH - Female MH - Lipid Metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Serine Endopeptidases/genetics/*metabolism PMC - PMC8348244 OTO - NOTNLM OT - diabetes mellitus OT - extracellular signal-regulated MAP kinase OT - fatty liver OT - matrix metalloproteinase 14 OT - serine protease COIS- The authors declare no conflict of interest. EDAT- 2021/08/08 06:00 MHDA- 2021/08/14 06:00 PMCR- 2021/08/02 CRDT- 2021/08/07 01:09 PHST- 2021/05/17 00:00 [received] PHST- 2021/07/12 00:00 [revised] PHST- 2021/07/30 00:00 [accepted] PHST- 2021/08/07 01:09 [entrez] PHST- 2021/08/08 06:00 [pubmed] PHST- 2021/08/14 06:00 [medline] PHST- 2021/08/02 00:00 [pmc-release] AID - ijms22158314 [pii] AID - ijms-22-08314 [pii] AID - 10.3390/ijms22158314 [doi] PST - epublish SO - Int J Mol Sci. 2021 Aug 2;22(15):8314. doi: 10.3390/ijms22158314.