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相关概念视频

Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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Genomic Imprinting and Inheritance02:30

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
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Abnormal Proliferation02:23

Abnormal Proliferation

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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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Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
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Master Transcription Regulators02:23

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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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Induction and Micro-CT Imaging of Cerebral Cavernous Malformations in Mouse Model
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通过多镇压复合体1进行表观遗传调节,促进大脑洞穴性形.

Van-Cuong Pham1, Claudia Jasmin Rödel1, Mariaelena Valentino2

  • 1Institute of Biochemistry and Biology, Potsdam University, D-14476, Potsdam, Germany.

EMBO molecular medicine
|October 14, 2024
PubMed
概括

染色体蛋白质同质素7 (CBX7) 驱动大脑洞腔形 (CCM) 的病理信号. 抑制CBX7在临床前模型中减少了CCM,为这种血管疾病提供了新的治疗途径.

关键词:
这就是CBX7 CBX7.大脑洞穴形形在KLF2KLF2KLF2在WNT9上.终结的MTMT是什么意思

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科学领域:

  • 血管生物学 血管生物学
  • 遗传学 遗传学 是一个
  • 分子生物学分子生物学

背景情况:

  • 大脑洞穴性形 (CCM) 是一种血管异常.
  • 失去CCM蛋白质会启动一个类似MAPK-Krüppel的2因子 (KLF2) 信号级联.
  • 在CCM病原发生过程中,下游KLF2向基因在很大程度上未被识别.

研究的目的:

  • 调查染色盒蛋白同质素7 (CBX7) 在CCM中KLF2介导信号传递中的作用.
  • 确定CBX7抑制是否可以改善CCM表型.

主要方法:

  • 在CCM患者病变和CCM缺乏细胞 (人,小鼠,斑马鱼) 中分析CBX7/cbx7amRNA表达.
  • 在斑马鱼,HUVEC和小鼠CCM3模型中抑制或药理上抑制CBX7/Cbx7a.
  • 全转录组分析以确定KLF2受CBX7.7调节的基因.

主要成果:

  • 在CCM病变和CCM缺乏的内皮细胞中,CBX7被上调.
  • 在多个模型中,CBX7抑制显著抑制病态CCM表型.
  • CBX7调节KLF2目标基因,包括TEK,ANGPT1,WNT9和与内皮-介质细胞转换 (endoMT) 相关的基因.

结论:

  • 在CCM病变发生过程中,CBX7是KLF2依赖生物机械信号的关键调节者.
  • 准CBX7是一个有前途的治疗策略,用于大脑洞穴性形.