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相关概念视频

Base Excision Repair01:54

Base Excision Repair

One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
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Overview
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
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,
Base Excision Repair01:54

Base Excision Repair

One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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Nucleotide Excision Repair01:38

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DNA Distortion and Damage
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...

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相关实验视频

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Free Radicals in Chemical Biology: from Chemical Behavior to Biomarker Development
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基因化物Rb3对OGD/R损伤的机制基于代谢学和PCR阵列分析.

Fuhui Li1, Jie Tao2, Mingmin Zhou1

  • 1College of Notoginseng Medicine, Wenshan University, Wenshan, Yunnan 663099, P.R. China.

Biomedical reports
|October 18, 2024
PubMed
概括

银化物Rb3 (G-Rb3) 通过抑制亡,保护HT22细胞免受氧气-葡萄糖剥夺/再氧化 (OGD/R) 损伤. 这种神经保护作用涉及调节代谢物和下调调节亲细胞亡基因.

关键词:
这是一个PCR阵列.灭症 (apoptosis) 是一种死亡的过程.人参化物 Rb3代谢生物组的代谢生物组氧气 葡萄糖 剥夺 / 重氧化

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科学领域:

  • 神经科学是一个神经科学.
  • 药理学 药理学是指药理学的学科.
  • 代谢学 代谢学 代谢学

背景情况:

  • 氧气-葡萄糖剥夺/再氧化 (OGD/R) 诱导细胞损伤,特别是在神经元.
  • 金色化物Rb3 (G-Rb3) 是一种具有潜在治疗功能的化合物.
  • 了解G-Rb3对OGD/R损伤的保护机制对于开发神经保护策略至关重要.

研究的目的:

  • 研究G-Rb3在HT22细胞中对OGD/R诱导的损伤的保护作用.
  • 通过代谢学和PCR阵列分析,阐明G-Rb3作用的潜在机制.

主要方法:

  • 对HT22细胞进行了体外OGD/R模型.
  • 评估了细胞活力,细胞亡和蛋白质表达 (Bax,Bcl-2,caspase-3).
  • 代谢分析确定了不同的代谢产物.
  • PCR阵列识别了差异性基因表达.

主要成果:

  • G-Rb3显著降低了OGD/R诱导的细胞亡和细胞死亡.
  • G-Rb3调节的与亡相关的蛋白质 (降低了Bax和caspase-3,增加了Bcl-2).
  • 代谢分析揭示了银河糖代谢和酸盐循环等途径的变化,以及瓜诺辛,埃纳拉普利拉特和酸盐水平的变化.
  • G-Rb3下调的亲细胞灭绝基因包括Trp63,Trp73,Dapk1,Casp14和Cd70.

结论:

  • 在实验室中,G-Rb3对OGD/R损伤表现出显著的神经保护作用.
  • 该机制涉及通过代谢途径调节和对特定的亲细胞亡基因的降低调节来抑制细胞亡.