PMID- 33548622 OWN - NLM STAT- MEDLINE DCOM- 20210510 LR - 20221207 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 545 DP - 2021 Mar 19 TI - Effects of transforming growth factor-beta1 on odontoblastic differentiation in dental papilla cells is determined by IPO7 expression level. PG - 105-111 LID - S0006-291X(21)00127-3 [pii] LID - 10.1016/j.bbrc.2021.01.076 [doi] AB - Transforming growth factor beta1 (TGF-beta1) is one of the broad-spectrum growth-promoting factors that participate in tooth development. The influence of TGF-beta1 on the odontoblastic differentiation is still controvercy. Mouse primary dental papilla cells (mDPCs) as well as an immortalized mouse dental papilla cell line (mDPC6Ts) were treated with exogenous TGF-beta1 during odontoblastic differentiation. RT-qPCR, Western blot, alizarin red staining and ALP staining were carried out to investigate the influence of TGF-beta1 on odontoblastic differentiation. IPO7, important for SMAD complex translocation was also detected in mDPCs and mDPC6Ts in response to TGF-beta1. After silencing IPO7 by transfection, the translocation process of P-SMAD2 was investigated by nuclear and cytoplasmic extraction as well as co-immunoprecipitation assay. The odontogenic markers, mineralization and IPO7 expression were significantly up-regulated in TGF-beta1-treated mDPCs while down-regulated in mDPC6Ts. The total level of P-SMAD2 was not influenced by IPO7 in mDPCs, however, IPO7 could bind to P-SMAD2 and affect the nuclear-cytoplasm-shuttling of P-SMAD2. Our data demonstrated that TGF-beta1 plays opposite roles in odontoblast differentiation in mDPCs and immortalized mouse dental papilla cell line (mDPC6Ts), which is determined by IPO7. CI - Copyright (c) 2021. Published by Elsevier Inc. FAU - Zhang, Yue AU - Zhang Y AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China. Electronic address: 2018203040020@whu.edu.cn. FAU - Zhang, Hao AU - Zhang H AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China. Electronic address: 2012302220058@whu.edu.cn. FAU - Yuan, Guohua AU - Yuan G AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China. Electronic address: yuanguohua@whu.edu.cn. FAU - Yang, Guobin AU - Yang G AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, China. Electronic address: guobin.yang@whu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210203 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Karyopherins) RN - 0 (RNA, Messenger) RN - 0 (Smad2 Protein) RN - 0 (Smad2 protein, mouse) RN - 0 (Tgfb1 protein, mouse) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Ipo7 protein, mouse) SB - IM MH - Active Transport, Cell Nucleus MH - Animals MH - Cell Differentiation/genetics/physiology MH - Cell Line MH - Cells, Cultured MH - Dental Papilla MH - Down-Regulation MH - Gene Knockdown Techniques MH - Karyopherins/antagonists & inhibitors/genetics/*metabolism MH - Mice MH - Odontoblasts/*cytology/*metabolism MH - Odontogenesis/genetics/physiology MH - RNA, Messenger/genetics/metabolism MH - Smad2 Protein/metabolism MH - Transforming Growth Factor beta1/*metabolism MH - Up-Regulation OTO - NOTNLM OT - Importin 7 OT - Mouse dental papilla cell line OT - Mouse dental papilla cells (mDPCs) OT - Odontoblastic differentiation OT - P-SMAD2 OT - TGF-beta1 COIS- Declaration of competing interest The authors declared no potential conflicts of interest with respect to this study. EDAT- 2021/02/07 06:00 MHDA- 2021/05/11 06:00 CRDT- 2021/02/06 20:11 PHST- 2020/12/27 00:00 [received] PHST- 2021/01/20 00:00 [accepted] PHST- 2021/02/07 06:00 [pubmed] PHST- 2021/05/11 06:00 [medline] PHST- 2021/02/06 20:11 [entrez] AID - S0006-291X(21)00127-3 [pii] AID - 10.1016/j.bbrc.2021.01.076 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2021 Mar 19;545:105-111. doi: 10.1016/j.bbrc.2021.01.076. Epub 2021 Feb 3.