PMID- 32545756 OWN - NLM STAT- MEDLINE DCOM- 20210219 LR - 20210219 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 21 IP - 12 DP - 2020 Jun 13 TI - Augmentation of Bone Regeneration by Depletion of Stress-Induced Senescent Cells Using Catechin and Senolytics. LID - 10.3390/ijms21124213 [doi] LID - 4213 AB - Despite advances in bone regenerative medicine, the relationship between stress-induced premature senescence (SIPS) in cells and bone regeneration remains largely unknown. Herein, we demonstrated that the implantation of a lipopolysaccharide (LPS) sustained-release gelatin sponge (LS-G) increases the number of SIPS cells and that the elimination of these cells promotes bone formation in critical-sized bone defects in the rat calvaria. Histological (hematoxylin-eosin and SA-beta-gal) and immunohistological (p16 and p21 for analyzing cellular senescence and 4-HNE for oxidation) staining was used to identify SIPS cells and elucidate the underlying mechanism. Bone formation in defects were analyzed using microcomputed tomography, one and four weeks after surgery. Parallel to LS-G implantation, local epigallocatechin gallate (EGCG) administration, and systemic senolytic (dasatinib and quercetin: D+Q) administration were used to eliminate SIPS cells. After LS-G implantation, SA-beta-gal-, p16-, and p21-positive cells (SIPS cells) accumulated in the defects. However, treatment with LS-G+EGCG and LS-G+D+Q resulted in lower numbers of SIPS cells than that with LS-G in the defects, resulting in an augmentation of newly formed bone. We demonstrated that SIPS cells induced by sustained stimulation by LPS may play a deleterious role in bone formation. Controlling these cell numbers is a promising strategy to increase bone regeneration. FAU - Honda, Yoshitomo AU - Honda Y AUID- ORCID: 0000-0002-4392-2318 AD - Institute of Dental Research, Osaka Dental University, 8-1, Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan. FAU - Huang, Anqi AU - Huang A AD - Department of Oral Implantology, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Tanaka, Tomonari AU - Tanaka T AUID- ORCID: 0000-0002-7050-9043 AD - Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. FAU - Han, Xiaoyu AU - Han X AD - Department of Operative Dentistry, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Gao, Beiyuan AU - Gao B AD - Department of Oral Implantology, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Liu, Haitao AU - Liu H AD - Department of Operative Dentistry, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Wang, Xinchen AU - Wang X AD - Department of Orthodontics, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Zhao, Jianxin AU - Zhao J AD - Department of Orthodontics, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Hashimoto, Yoshiya AU - Hashimoto Y AUID- ORCID: 0000-0002-7082-5804 AD - Department of Biomaterials, Osaka Dental University, 8-1, Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan. FAU - Yamamoto, Kazuyo AU - Yamamoto K AD - Department of Operative Dentistry, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Matsumoto, Naoyuki AU - Matsumoto N AD - Department of Orthodontics, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Baba, Shunsuke AU - Baba S AD - Department of Oral Implantology, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. FAU - Umeda, Makoto AU - Umeda M AD - Institute of Dental Research, Osaka Dental University, 8-1, Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan. AD - Department of Periodontology, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka 540-0008, Japan. LA - eng GR - 16K11667 and 18H02986/Japan Society for the Promotion of Science/ PT - Journal Article DEP - 20200613 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Aldehydes) RN - 0 (Bone Substitutes) RN - 0 (Delayed-Action Preparations) RN - 0 (Lipopolysaccharides) RN - 8R1V1STN48 (Catechin) RN - 9IKM0I5T1E (Quercetin) RN - BQM438CTEL (epigallocatechin gallate) RN - K1CVM13F96 (4-hydroxy-2-nonenal) RN - RBZ1571X5H (Dasatinib) SB - IM MH - Aldehydes/metabolism MH - Animals MH - Bone Regeneration/drug effects MH - Bone Substitutes/*administration & dosage/chemistry/pharmacology MH - Catechin/*administration & dosage/*analogs & derivatives/chemistry/pharmacology MH - Cell Line MH - Cellular Senescence MH - Dasatinib/*administration & dosage/pharmacology MH - Delayed-Action Preparations MH - Lipopolysaccharides/pharmacology MH - Osteoblasts/*cytology/drug effects/metabolism MH - Quercetin/*administration & dosage/pharmacology MH - Rats MH - Skull/diagnostic imaging/drug effects/*injuries MH - X-Ray Microtomography PMC - PMC7352429 OTO - NOTNLM OT - EGCG OT - LPS OT - bone formation OT - catechin OT - cellular senescence OT - senolytics COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2020/06/18 06:00 MHDA- 2021/02/20 06:00 PMCR- 2020/06/01 CRDT- 2020/06/18 06:00 PHST- 2020/05/15 00:00 [received] PHST- 2020/06/07 00:00 [revised] PHST- 2020/06/11 00:00 [accepted] PHST- 2020/06/18 06:00 [entrez] PHST- 2020/06/18 06:00 [pubmed] PHST- 2021/02/20 06:00 [medline] PHST- 2020/06/01 00:00 [pmc-release] AID - ijms21124213 [pii] AID - ijms-21-04213 [pii] AID - 10.3390/ijms21124213 [doi] PST - epublish SO - Int J Mol Sci. 2020 Jun 13;21(12):4213. doi: 10.3390/ijms21124213.