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相关概念视频

Negative Regulator Molecules01:23

Negative Regulator Molecules

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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.
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DNA Damage can Stall the Cell Cycle02:37

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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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Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

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DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
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The DNA Replication Fork01:02

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An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork.   Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication...
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Epigenetic Regulation01:46

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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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...
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相关实验视频

Updated: Jun 14, 2025

Examination of Proteins Bound to Nascent DNA in Mammalian Cells Using BrdU-ChIP-Slot-Western Technique
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YIPF2调节了基因组的完整性.

Xiao Zhang1,2,3,4, Tao Wang5,6,7

  • 1Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint, Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.

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概括

戈尔吉蛋白YIPF2通过支持DNA修复,对维持基因组稳定性至关重要. 它的存在保护细胞免受DNA损伤并促进恢复,为衰老和疾病干预提供了洞察力.

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Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
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相关实验视频

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科学领域:

  • 分子生物学分子生物学
  • 细胞生物学 细胞生物学
  • 遗传学 是一个遗传学.

背景情况:

  • 基因组完整性对于预防衰老和疾病至关重要.
  • 了解DNA修复机制是开发干预措施的关键.
  • 维持基因组稳定性的新因素需要识别.

研究的目的:

  • 通过全基因组RNAi屏幕识别参与维持基因组稳定性的新型因素.
  • 研究戈尔吉蛋白YIPF2在基因组完整性中的作用.
  • 探索YIPF2在DNA损伤反应和衰老中的治疗潜力.

主要方法:

  • 全基因组RNAi查以确定潜在的目标基因.
  • 分析与细胞周期,蛋白酶体和结合酶体相关的基因功能.
  • 研究YIPF2枯竭和过度表达对DNA修复和细胞衰老的影响.

主要成果:

  • 一个全基因组RNAi屏幕发现了涉及基因组稳定性的新型因素.
  • 发现戈尔吉蛋白YIPF2对于维持基因组稳定性至关重要.
  • YIPF2 枯竭损害了同源重组 (HR) 修复,引发了DNA损伤反应和细胞衰老.
  • YIPF2过度表达增强了细胞从DNA损伤中恢复.

结论:

  • 戈尔吉蛋白YIPF2在维持基因组稳定性方面发挥着至关重要的作用.
  • YIPF2对于有效的同源重组 (HR) 修复至关重要.
  • 一个完整的戈尔吉装置与YIPF2提供了对基因组完整性的保护作用,对衰老和疾病有影响.
  • YIPF2代表了增强DNA修复和打击与年龄相关的衰退的潜在治疗点.