Calcium-Sensing Receptors in Chondrocytes and Osteoblasts Are Required for Callus Maturation and Fracture Healing in Mice.
Calcium-Sensing Receptors in Chondrocytes and Osteoblasts Are Required for Callus Maturation and Fracture Healing in Mice.
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DOI:
10.1002/jbmr.3864
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发表时间:
2020-01
期刊:
影响因子:
--
通讯作者:
Chang W
中科院分区:
文献类型:
--
作者:
Cheng Z;Li A;Tu CL;Maria CS;Szeto N;Herberger A;Chen TH;Song F;Wang J;Liu X;Shoback DM;Chang W
Calcium and its putative receptor (CaSR) control skeletal development by pacing chondrocyte differentiation and mediating osteoblast (OB) function during endochondral bone formation—an essential process recapitulated during fracture repair. Here, we delineated the role of the CaSR in mediating transition of callus chondrocytes into the OB lineage and subsequent bone formation at fracture sites and explored targeting CaSRs pharmacologically to enhance fracture repair. In chondrocytes cultured from soft calluses at a closed, unfixed fracture site, extracellular [Ca2+] and the allosteric CaSR agonist (NPS-R568) promoted terminal differentiation of resident cells and the attainment of an osteoblastic phenotype. Knockout (KO) of the Casr gene in chondrocytes lengthened the chondrogenic phase of fracture repair by increasing cell proliferation in soft calluses but retarded subsequent osteogenic activity in hard calluses. Tracing growth plate (GP) and callus chondrocytes that express Rosa26-tdTomato showed reduced chondrocyte transition into OBs (by >80%) in the spongiosa of the metaphysis and in hard calluses. In addition, KO of the Casr gene specifically in mature OBs suppressed osteogenic activity and mineralizing function in bony calluses. Importantly, in experiments using PTH (1–34) to enhance fracture healing, co-injection of NPS-R568 not only normalized the hypercalcemic side effects of intermittent PTH (1–34) treatment in mice but also produced synergistic osteoanabolic effects in calluses. These data indicate a functional role of CaSR in mediating chondrogenesis and osteogenesis in the fracture callus and the potential of CaSR agonism to facilitate fracture repair.
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DOI:
10.1530/joe-15-0473
发表时间:
2016-06
期刊:
The Journal of endocrinology
影响因子:
--
作者:
Devlin MJ;Brooks DJ;Conlon C;Vliet Mv;Louis L;Rosen CJ;Bouxsein ML
通讯作者:
Bouxsein ML
DOI:
10.1056/nejm197003052821026
发表时间:
1970-03-19
期刊:
The New England journal of medicine
影响因子:
--
作者:
Cahill, G F Jr
通讯作者:
Cahill, G F Jr
DOI:
10.1007/s40610-017-0074-6
发表时间:
2017-12
期刊:
Current molecular biology reports
影响因子:
--
作者:
Falank C;Fairfield H;Reagan MR
通讯作者:
Reagan MR
影响因子:
6.2
作者:
Devlin, Maureen J.;Cloutier, Alison M.;Thomas, Nishina A.;Panus, David A.;Lotinun, Sutada;Pinz, Ilka;Baron, Roland;Rosen, Clifford J.;Bouxsein, Mary L.
通讯作者:
Bouxsein, Mary L.
影响因子:
5.7
作者:
Avants BB;Tustison NJ;Song G;Cook PA;Klein A;Gee JC
通讯作者:
Gee JC