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関連する概念動画

Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...

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関連する実験動画

Updated: Jul 22, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

p53はミトコンドリアの呼吸を調節する.

Satoaki Matoba1, Ju-Gyeong Kang, Willmar D Patino

  • 1Cardiology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Science (New York, N.Y.)
|May 27, 2006
PubMed
まとめ

p53遺伝子は,糖分解と呼吸を調節することによって,がん細胞のエネルギー生成に影響を与えます. これは,シトクロームc酸化酵素2 (SCO2) の合成を通じて,ウォーバーグ効果に影響を与え,がん代謝の洞察を提供することで実現します.

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Purification of Ubiquitinated p53 Proteins from Mammalian Cells

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04:56

Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence

Published on: December 30, 2025

関連する実験動画

Last Updated: Jul 22, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

Purification of Ubiquitinated p53 Proteins from Mammalian Cells
10:55

Purification of Ubiquitinated p53 Proteins from Mammalian Cells

Published on: March 21, 2022

Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence
04:56

Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence

Published on: December 30, 2025

科学分野:

  • 癌生物学 癌生物学について
  • 細胞の代謝について
  • 分子腫瘍学 分子腫瘍学

背景:

  • 癌細胞は,好ましくは,ワーブルク効果として知られる現象である,エネルギーのためのグリコロシスを利用します.
  • 腫瘍抑制遺伝子p53は,様々な癌で頻繁に変異し,細胞生存と代謝に影響を及ぼします.
  • がんにおける代謝調節を理解することは,標的治療の開発に不可欠です.

研究 の 目的:

  • 癌細胞のエネルギー代謝を調節するp53の役割を調査する.
  • p53の代謝効果のダウンストリームメディエーターを特定するために.
  • p53,SCO2とワルバーグ効果の関連性を探求する.

主な方法:

  • 呼吸道とグリコロイチス経路に対するp53の影響の分析.
  • 重要な媒介体としてのシトクロームc酸化酵素2 (SCO2) の合成の特定.
  • 野生型および変異p53.3を有するヒトがん細胞系における遺伝子破壊の研究.
  • サイトクロームc酸化酵素 (COX) 複合体の活性に関する評価.

主要な成果:

  • p53は,細胞呼吸と糖分解のバランスを調節する.
  • SCO2はp53の代謝調節のダウンストリームメディエーターとして特定されました.
  • p53ワイルド型細胞におけるSCO2の破壊は,p53欠乏細胞で見られるグリコロイチスイッチを模倣した.
  • SCO2は,COX複合体と酸素利用の調節に不可欠です.

結論:

  • SCO2は,p53とミトコンドリア呼吸の間の重要なリンクとして機能します.
  • この発見は,がんにおけるワーブルク効果の潜在的な説明を提供する.
  • p53-SCO2軸は,がんの代謝,老化,治療戦略に関する新しい洞察を提供します.