{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T16:40:06Z","timestamp":1793119206808,"version":"4.5.0"},"reference-count":36,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2023,9,21]],"date-time":"2023-09-21T00:00:00Z","timestamp":1695254400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100012542","name":"Sichuan Science and Technology Program of China","doi-asserted-by":"publisher","award":["21ZDYF1874"],"award-info":[{"award-number":["21ZDYF1874"]}],"id":[{"id":"10.13039\/100012542","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81701005"],"award-info":[{"award-number":["81701005"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82071150"],"award-info":[{"award-number":["82071150"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82271017"],"award-info":[{"award-number":["82271017"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Dent Res"],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:p>Orthodontically induced inflammatory root resorption (OIIRR) is the major iatrogenic complication of orthodontic treatment, seriously endangering tooth longevity and impairing masticatory function. Osteoclasts are thought to be the primary effector cells that initiate the pathological process of OIIRR; however, the cellular and molecular mechanisms responsible for OIIRR remain unclear. Our previous studies revealed that cementocytes, the major mechanically responsive cells in cementum, respond to compressive stress to activate and influence osteoclasts locally. For this study, we hypothesized that the sphingosine-1-phosphate (S1P) signaling pathway, a key mechanotransduction pathway in cementocytes, may regulate osteoclasts under the different magnitudes of either physiologic compressive stress that causes tooth movement or pathologic stress that causes OIIRR. Here, we show a biphasic effect of higher compression force stimulating the synthesis and secretion of S1P, whereas lower compression force reduced signaling in IDG-CM6 cementocytes. Using conditioned media from force-loaded cementocytes, we verified the cell-to-cell communication between cementocytes and osteoclasts and show that selective knockdown of S1PR1 and Rac1 plays a role in cementocyte-driven osteoclastogenesis via the S1P\/S1PR1\/Rac1 axis. Most importantly, the use of inhibitors of this axis reduced or prevented the pathological process of OIIRR. The intercellular communication mechanisms between cementocytes and osteoclasts may serve as a promising therapeutic target for OIIRR.<\/jats:p>","DOI":"10.1177\/00220345231195765","type":"journal-article","created":{"date-parts":[[2023,9,22]],"date-time":"2023-09-22T01:56:03Z","timestamp":1695347763000},"page":"1376-1386","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":24,"title":["Force-Loaded Cementocytes Regulate Osteoclastogenesis via S1P\/S1PR1\/Rac1 Axis"],"prefix":"10.1177","volume":"102","author":[{"given":"H.","family":"Wang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases;Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 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