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関連する概念動画

Mismatch Repair01:36

Mismatch Repair

Overview
Mismatch Repair01:36

Mismatch Repair

Overview
Homologous Recombination02:31

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
Base-pairing and DNA Repair02:27

Base-pairing and DNA Repair

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
Homologous Recombination02:31

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...

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関連する実験動画

Updated: Jun 12, 2026

Visualization of DNA Repair Proteins Interaction by Immunofluorescence
07:55

Visualization of DNA Repair Proteins Interaction by Immunofluorescence

Published on: June 26, 2020

メタボリットの相互作用は,同質再結合によってDNA修復を調節することができます.

Valentina Rossi1, Mirco Masi2, Marzia Govoni3

  • 1Department of Medical and Surgical Sciences (DIMEC), Section of General Pathology, University of Bologna, 40126 Bologna, Italy.

International journal of molecular sciences
|February 13, 2026
PubMed
まとめ

細胞代謝産物である乳酸塩とブチラートは,遺伝子発現とがん薬の有効性に影響を与えます. 研究者らは,これらの分子がDNA修復に逆の影響を及ぼし,がん治療の結果に影響することを発見しました.

キーワード:
DNAの修復 DNAの修復というものです.バターレート,バチラートがん細胞 がん細胞 がん細胞同型複合再結合である.乳酸ナトリウムは乳酸ナトリウムである.

さらに関連する動画

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
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Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
06:44

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging

Published on: April 28, 2021

関連する実験動画

Last Updated: Jun 12, 2026

Visualization of DNA Repair Proteins Interaction by Immunofluorescence
07:55

Visualization of DNA Repair Proteins Interaction by Immunofluorescence

Published on: June 26, 2020

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
10:59

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage

Published on: August 21, 2021

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
06:44

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging

Published on: April 28, 2021

科学分野:

  • メタボロミクスとは
  • がん生物学 がん生物学
  • 分子腫瘍学 分子腫瘍学

背景:

  • 代謝と腸内細菌からの小さな分子は,遺伝子発現と細胞機能に影響を与えます.
  • 乳酸は癌の増殖と薬剤耐性に関連しており,ブチラートには抗がん性があります.

研究 の 目的:

  • 抗癌薬の効能を調節する乳酸とブチラートの相互作用を調査する.
  • これらの代謝産物が癌細胞の遺伝子発現にどのように影響するかを調査する.

主な方法:

  • 臓および三重陰性乳腺腺がん細胞系を活用した.
  • DNA修復に関連する遺伝子発現に対する乳酸塩とブチラートの影響を分析した.
  • PARP阻害剤に対する同種の再結合と反応の調節を評価した.

主要な成果:

  • 乳酸塩とブチラートは,両方の細胞系における同質再結合によってDNA修復における鍵となる遺伝子を相反的に調節する.
  • DNA修復経路の有効性とPARP阻害剤への反応が変化した.
  • ラクト酸とブチラートとの間の対抗効果が観察されました.

結論:

  • DNA修復経路に対する乳酸塩とブチラートの対極的な効果は,がん薬の反応に影響を与える可能性があります.
  • このメタボリットの相互作用は,抗がん療法における課題を克服するための潜在的な戦略を示しています.
  • 発見は,細胞の代謝産物を操作することによって,新しい治療法を示唆しています.