関連する実験動画
Updated: Sep 9, 2025

10:26
Inducing Apical Periodontitis in Mice
Published on: August 6, 2019
12.3K
根の吸収におけるシグナル伝達経路:炎症,オドントオクラストゲネシス,組織再構成を結びつける
Golriz Rostami1, Rajeshwari Hadagalu Revana Siddappa1, Anil Kishen2
1The Kishen Lab, Dental Research Institute, University of Toronto, Toronto, Canada.
Journal of endodontics
|August 30, 2025
まとめ
根の再吸収は,骨の再吸収と同様に,歯の根の組織のオドントークラストの分解を含みます. 信号伝達経路と炎症媒介体は このプロセスを決定的に制御し 矯正や外傷性歯の損傷に影響を与えます
科学分野:
- 歯科生物学
- 細胞生物学
- 病理学について
背景:
- 根の再吸収は病理的なプロセスで,オドントクラストが歯肉とセメントを分解します.
- このプロセスは複雑な分子シグナル伝達を含む 骨細胞による骨再吸収を反映しています
- これらのメカニズムを理解することは 矯正歯根再吸収のような状態の管理に不可欠です
研究 の 目的:
- 根の再吸収に関与する分子信号伝達経路と媒介体を包括的に検討する.
- オドントクラストの分化と活動におけるプロおよび抗炎症因子の役割を分析する.
- 再吸収抵抗に影響を与える 根構造のユニークな側面を強調する.
主な方法:
- オステオクラストゲネシスとオドントクラストゲネシスを調節するシグナル伝達経路の文献レビュー.
- 炎症促進と抗炎症性サイトカインの役割の分析
- 細胞外マトリックス改造因子とメカニカル変換の検査
主要な成果:
- 骨格形成はRANK/RANKL/OPG軸,Wnt,および炎症体経路によって制御される.
- 炎症促進媒介体 (例えばIL-1,TNF-α) はオドントクラストの分化を促進し,抗炎症サイトカイン (例えばIL-4,IL-10) はそれを阻害する.
- マトリックスメタロプロテインゼとペリオスティンは 細胞外マトリクスを調節し 炎症性マイクロ環境が鍵となります
結論:
- 根の吸収は,吸収因子と修復因子の複雑な交響を伴う.
- 炎症性マイクロ環境と特定のシグナル伝達経路が 根の退廃の程度を決定します
- 独特の根構造は抵抗性がありますが 炎症や機械的な刺激は再吸収を促します
関連する概念動画
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.2K
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...
2.2K
Notch Signaling Pathway
4.4K
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...
4.4K
Osteoclasts in Bone Remodeling
3.2K
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...
3.2K
TGF - β Signaling Pathway
7.6K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.6K
Bone Remodeling
38.5K
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.
38.5K
The JAK-STAT Signaling Pathway
9.2K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
9.2K

