控制膜骨发育,平衡,以及由盐可诱导的激酶的口愈合
Nicha Tokavanich1,2, Byron Chan1, Katelyn Strauss1
1Endocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
概括
盐诱导性激酶2和3 (SIK2 / SIK3) 对膜骨发育和愈合至关重要. 它们的删除会导致骨缺陷,与长骨不同,在不同类型的骨中揭示出独特的遗传程序.
科学领域:
- 骨生物学 骨生物学
- 骨生理学 骨生理学
- 头骨面部的发展
背景情况:
- 副甲状腺激素相关蛋白 (PTHrP) 途径调节大气泡骨. 盐诱导激酶 (SIK) 是长骨中的下游效应因子,其抑制促进了骨的形成.
- 在膜骨生物学,牙支和愈合中SIKs的作用仍然未被探索.
研究的目的:
- 调查SIK2和SIK3在膜骨发育,平衡和口愈合中的功能.
- 了解SIK2/SIK3在面骨与尾骨中的不同机制.
主要方法:
- 使用条件淘汰赛小鼠 (Ubq-creERt;Sik2f/f;Sik3f/f) 来诱导SIK2/SIK3.3的删除.
- 在稳定状态下和取后分析了膜骨表型.
- 对膜骨和长骨的骨质细胞进行了转录基因分析.
主要成果:
- 诱导性删除SIK2/SIK3导致严重的气囊骨缺陷和损伤口愈合.
- 骨质细胞成熟被破坏,导致骨形成减少.
- 在围绕有缺陷的膜骨周围的纤维细胞中观察到外宫内皮质素的表达.
- 现型与长骨中SIK2/SIK3删除显著不同,长骨显示骨质增加.
结论:
- SIK2/SIK3在膜骨发育,平衡和修复中起着至关重要的作用.
- 删除SIK2/SIK3的独特效应突出了不同骨元素中的上下文依赖的功能和独特的遗传程序.
- 这项研究揭示了SIK2/SIK3作为膜骨生物学的关键调节者.
相关概念视频
Osteoclasts in Bone Remodeling
2.8K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
2.8K
Bone Remodeling
38.1K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
38.1K
Role of Vitamins in Maintaining Bone Health
3.1K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
3.1K
Notch Signaling Pathway
4.2K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.2K
Skeleton and Calcium Homeostasis
4.3K
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
4.3K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.0K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.0K


