인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Circadian rhythm is an essential biological process that synchronises physiological activities with environmental light/dark cycles. However, its regulatory mechanisms in tooth development remain incompletely understood. Here, we investigated the role of the p75 neurotrophin receptor (p75NTR) in circadian rhythm regulation and daily mineralization during tooth development using immunofluorescence, circadian rhythm tracking, and genetic models. Spatiotemporal analysis of rat dental germs revealed that oscillatory expression patterns of p75NTR closely aligned with clock genes (Bmal1, Clock, Per1, Per2), mineralization-related factors, and odontogenesis-related factors. p75NTR knockout mice (p75NTR<sup>ExIII-/-</sup>) exhibited reduced body weight, lower melatonin levels, delayed incisor eruption, decreased daily mineralization width, and downregulation of core clock genes. Mechanistically, p75NTR overexpression in immortalised stem cells from the dental apical papilla (iSCAPs) upregulated casein kinase 2 (CK2) expression, enhanced PER2 phosphorylation, and promoted nuclear p-PER2 accumulation, while CK2 inhibition partially reversed these effects. In vivo, CK2 inhibition via quinalizarin exacerbated incisor eruption defects in p75NTR<sup>ExIII-/-</sup> mice. These findings demonstrate that p75NTR regulates circadian-driven mineralization and tooth morphogenesis, probably via the CK2/PER2 pathway, providing critical insight into the interplay between the circadian rhythm and dental development.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.