Role of Cx43 on the Bone Cell Generation, Function, and Survival.

Autor:	Plotkin LI; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA.; Roudebush Veterans Administration Medical Center, Indianapolis, Indiana, USA.; Indiana Center for Musculoskeletal Health, Indianapolis, Indiana, USA., Asad I; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA., Kritikos AE; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA., Sanz N; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Jazyk:	angličtina
Zdroj:	Bioelectricity [Bioelectricity] 2023 Sep 01; Vol. 5 (3), pp. 188-195. Date of Electronic Publication: 2023 Sep 12.
DOI:	10.1089/bioe.2023.0028
Abstrakt:	The presence of gap junction intercellular communication structures in bone cells has been known since the early 1970s, further confirmed by Doty and Marotti at the structural level in the 1980-1990s. Work by Civitelli, Donahue, and others showed the expression of Cx43 at the mRNA and protein levels in all bone cell types: osteoclasts (bone resorbing cells), osteoblasts (bone forming cells), and osteocytes (mature osteoblasts embedded in the bone matrix that regulate the function of both osteoclasts and osteoblasts). While Cx45, Cx46, and Cx37 were also shown to be expressed in bone cells, most studies have focused on Cx43, the most abundant member of the connexin (Cx) family of proteins expressed in bone. The role of Cx43 has been shown to be related to the formation of gap junction intercellular channels, to unopposed hemichannels, and to channel independent functions of the molecule. Cx43 participates in the response of bone cells to pharmacological, hormonal, and mechanical stimuli, and it is involved in the skeletal phenotype with old age. Human and murine studies have shown that mutations of Cx43 lead to oculodentodigital dysplasia and craniometaphyseal dysplasia, both conditions associated with abnormalities in the skeleton. However, whereas substantial advances have been made on the skeletal role of Cx43, further research is needed to understand the basis for the effects of mutated Cx43 and potential ways to prevent the effects of these mutations on bone. Competing Interests: No competing financial interests exist. (Copyright 2023, Mary Ann Liebert, Inc., publishers.)
Databáze:	MEDLINE
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