BMP-2-mediated signaling suppresses salivary gland development

Shinnosuke Ono; Atsushi Yamada; Junichi Tanaka; Akane Yukimori; Kiyohito Sasa; Kenji Mishima; Takahiro Funatsu; Ryutaro Kamijo

doi:10.1016/j.bbrc.2023.09.040

BMP-2-mediated signaling suppresses salivary gland development

Biochem Biophys Res Commun. 2023 Nov 12:681:1-6. doi: 10.1016/j.bbrc.2023.09.040. Epub 2023 Sep 19.

Authors

Shinnosuke Ono¹, Atsushi Yamada², Junichi Tanaka³, Akane Yukimori³, Kiyohito Sasa⁴, Kenji Mishima³, Takahiro Funatsu⁵, Ryutaro Kamijo⁴

Affiliations

¹ Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan; Department of Perioperative Medicine, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, Tokyo, Japan; Department of Biochemistry, Graduate School of Dentistry, Showa University, Tokyo, Japan.
² Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan. Electronic address: yamadaa@dent.showa-u.ac.jp.
³ Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, Japan.
⁴ Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan.
⁵ Department of Perioperative Medicine, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, Tokyo, Japan; Department of Pediatric Dentistry, School of Dentistry, Showa University, Tokyo, Japan.

PMID: 37742472
DOI: 10.1016/j.bbrc.2023.09.040

Abstract

Research regarding the process of salivary gland development and elucidation of related mechanisms are considered essential for development of effective treatments for conditions associated with salivary disease. Various reports regarding the effects of bone morphogenetic protein (BMP)-2 on hard tissue cells have been presented, though few have examined those related to salivary gland formation. Using an organ culture system, the present study was conducted to investigate the function of BMP-2 in salivary gland formation. Salivary glands obtained from embryonic day 13.5 mice and treated with BMP-2 showed suppression of primordial cell differentiation and also gland formation in a concentration-dependent manner. Furthermore, gland formation inhibition was suppressed by concurrent treatment with dorsomorphin, an inhibitor of the Smad pathway. Expression levels of AQP5, a marker gene for acinar cells, and Prol1, an opiorphin expressed in the lacrimal gland, were decreased in salivary glands treated with BMP-2. The present findings indicate that suppression of salivary gland formation, especially acinar differentiation, is induced by BMP-2, a phenomenon considered to be related to the Smad pathway.

Keywords: BMP-2; SMAD; Salivary gland.