ミトコンドリア細胞死亡の病理生理学
Douglas R Green1, Guido Kroemer
1Division of Cellular Immunology, La Jolla Institute for Allergy and Immunology, 10355 Science Center Drive, San Diego, CA 92121, USA. doug@liai.org
Science (New York, N.Y.)
|August 3, 2004
まとめ
ミトコンドリア外膜浸透 (MOMP) は,死亡因子を放出することでアポトーシスを引き起こす. MOMPの規制を理解することは,がんやその他の病気に対する治療法の開発の鍵です.
科学分野:
- 細胞生物学 細胞生物学
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
背景:
- アポトーシスの中心となるカスパース活性化は,ミトコンドリア外膜浸透性 (MOMP) によって緊密に調節されます.
- MOMPは,ミトコンドリアに収束する様々なプロアポプトシ信号によって誘発されます.
- Bcl-2タンパク質ファミリー,脂質,代謝調節剤は,MOMPの実行において重要な役割を果たしています.
研究 の 目的:
- MOMPの病理生理学に関する一般的な規則について議論する.
- MOMP規制の議論を醸す問題を探求する.
- MOMPを標的とした治療戦略を強調する.
主な方法:
- アポトーシスとMOMPに関する既存の文献のレビュー.
- MOMPを調節する分子機構の分析.
- MOMPに関連した病理的刺激と治療的介入の議論.
主要な成果:
- MOMPは,カスパース活性化および/または代謝不全によって細胞死につながる.
- MOMPの調節不良は,病的な細胞死と癌に関与しています.
- MOMPのターゲティングは,様々な病気に対する治療的可能性を秘めています.
結論:
- MOMPは,アポトーシスの重要な,致命的なイベントです.
- MOMPの正確な調節は,細胞ホメオスタシスのために不可欠です.
- MOMPの調節は,がんやその他の疾患の治療に有望である.
関連する概念動画
01:30Overview of Cell Death
Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
01:18Autophagic Cell Death
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
01:16Necrosis
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
01:00Cellular Injury I: Introduction
Cellular injury occurs when a cell cannot maintain homeostasis or adapt to stressors such as hypoxia, toxins, or trauma. Depending on severity and duration, injury may be reversible, allowing recovery, or irreversible, leading to cell death.General Mechanisms of Cell InjuryAlthough causes vary, most cellular injuries arise from a few key mechanisms that disrupt essential functions and often amplify one another. Cell survival depends on the extent and balance of these disturbances.ATP depletion...
01:11Cellular Injury IlI: Cellular Death
Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
01:16Cellular Injury IV: Necrosis
Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...