PMID- 30261648 OWN - NLM STAT- MEDLINE DCOM- 20190110 LR - 20211204 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 19 IP - 10 DP - 2018 Sep 26 TI - Combined Fluid Shear Stress and Melatonin Enhances the ERK/Akt/mTOR Signal in Cilia-Less MC3T3-E1 Preosteoblast Cells. LID - 10.3390/ijms19102929 [doi] LID - 2929 AB - We investigated whether combined fluid shear stress (FSS) and melatonin stimulated signal transduction in cilia-less MC3T3-E1 preosteoblast cells. MC3T3-E1 cells were treated with chloral hydrate or nocodazole, and mechanotransduction sensor primary cilia were removed. p-extracellular signal(-)regulated kinase (ERK) and p-Akt with/without melatonin increased with nocodazole treatment and decreased with chloral hydrate treatment, whereas p-ERK and p-Akt in FSS with/without melatonin increased in cilia-less groups compared to cilia groups. Furthermore, p-mammalian target of rapamycin (mTOR) with FSS-plus melatonin increased in cilia-less groups compared to only melatonin treatments in cilia groups. Expressions of Bcl-2, Cu/Zn-superoxide dismutase (SOD), and catalase proteins were higher in FSS with/without melatonin with cilia-less groups than only melatonin treatments in cilia groups. Bax protein expression was high in FSS-plus melatonin with chloral hydrate treatment. In chloral hydrate treatment with/without FSS, expressions of Cu/Zn-SOD, Mn-SOD, and catalase proteins were high compared to only-melatonin treatments. In nocodazole treatment, Mn-SOD protein expression without FSS was high, and catalase protein level with FSS was low, compared to only melatonin treatments. These data show that the combination with FSS and melatonin enhances ERK/Akt/mTOR signal in cilia-less MC3T3-E1, and the enhanced signaling in cilia-less MC3T3-E1 osteoblast cells may activate the anabolic effect for the preservation of cell structure and function. FAU - Kim, Chi Hyun AU - Kim CH AD - Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, Gangwon 26493, Korea. chihyun@yonsei.ac.kr. FAU - Jeung, Eui-Bae AU - Jeung EB AUID- ORCID: 0000-0001-8936-916X AD - Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Korea. ebjeung@chungbuk.ac.kr. FAU - Yoo, Yeong-Min AU - Yoo YM AUID- ORCID: 0000-0003-1732-8494 AD - Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Korea. yyeongm@hanmail.net. LA - eng PT - Journal Article DEP - 20180926 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Antioxidants) RN - 0 (Tubulin Modulators) RN - 418M5916WG (Chloral Hydrate) RN - EC 1.15.1.1 (Superoxide Dismutase-1) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - JL5DK93RCL (Melatonin) RN - SH1WY3R615 (Nocodazole) SB - IM MH - Animals MH - Antioxidants/pharmacology MH - Cell Line MH - Chloral Hydrate/pharmacology MH - Cilia/metabolism MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Hydrodynamics MH - Melatonin/*pharmacology MH - Mice MH - Nocodazole/pharmacology MH - Osteoblasts/*drug effects/metabolism MH - Protein Kinases/*metabolism MH - Proto-Oncogene Proteins c-akt/metabolism MH - Signal Transduction/*drug effects MH - *Stress, Mechanical MH - Superoxide Dismutase-1/metabolism MH - TOR Serine-Threonine Kinases/metabolism MH - Tubulin Modulators/pharmacology PMC - PMC6213863 OTO - NOTNLM OT - MC3T3-E1 cells OT - chloral hydrate OT - fluid shear stress OT - melatonin OT - nocodazole OT - primary cilia COIS- The authors declare no conflict of interest. EDAT- 2018/09/29 06:00 MHDA- 2019/01/11 06:00 PMCR- 2018/10/01 CRDT- 2018/09/29 06:00 PHST- 2018/08/30 00:00 [received] PHST- 2018/09/22 00:00 [revised] PHST- 2018/09/23 00:00 [accepted] PHST- 2018/09/29 06:00 [entrez] PHST- 2018/09/29 06:00 [pubmed] PHST- 2019/01/11 06:00 [medline] PHST- 2018/10/01 00:00 [pmc-release] AID - ijms19102929 [pii] AID - ijms-19-02929 [pii] AID - 10.3390/ijms19102929 [doi] PST - epublish SO - Int J Mol Sci. 2018 Sep 26;19(10):2929. doi: 10.3390/ijms19102929.