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相关概念视频

General Transcription Factors01:30

General Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Transcription Factors02:16

Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Combinatorial Gene Control02:33

Combinatorial Gene Control

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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相关实验视频

Updated: Jun 11, 2025

Generation of Human Chimeric Antigen Receptor Regulatory T Cells
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基斯顿标记可以识别出新型的转录因子,分析CAR-T来源子集,临床潜力和扩展.

S Fiorenza1, Y Zheng2,3, J Purushe4

  • 1Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia. salvatore.fiorenza@sydney.edu.au.

Nature communications
|September 27, 2024
PubMed
概括

基斯标记分析揭示了转录组学错过的CAR-T细胞状态. KLF7转录因子活性与淋巴瘤患者的CAR-T细胞积累相关,改善了治疗潜力的洞察力.

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科学领域:

  • 免疫治疗是一种免疫疗法.
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 癌症生物学 癌症生物学

背景情况:

  • 化学抗原受体修饰T细胞 (CAR-T) 免疫疗法是血液癌症的突破.
  • 了解T细胞质量和CAR-T疗效是复杂的,转录学在捕捉短暂基因表达方面存在局限性.

研究的目的:

  • 为了调查质子甲基化标记是否可以比转录组学更好地定义CAR-T细胞功能状态和治疗潜力.
  • 为了确定CAR-T细胞疗效的新生物标志物.

主要方法:

  • 在人类T细胞子集和衍生CAR-T细胞中对转录抑制性和容许性组织蛋白甲基化标记的分析.
  • 来自健康捐赠者和患者的CAR-T产品的比较.
  • 对来自临床试验 (NCT01865617) 的CAR-T产品进行检查,以发现与体内CAR-T积累的关联.

主要成果:

  • 基斯标记分析有效地分化原始,中央记忆和效应记忆CD8+T细胞子集及其衍生的CAR-T细胞.
  • 从健康捐赠者与患者的中央记忆细胞制造的CAR-T中观察到显著的差异.
  • 在淋巴瘤患者中,转录因子KLF7活性与体内CAR-T积累之间发现了一种新的关联.
  • 过度表达KLF7增强了体外CAR-T增殖和IL-2的产生.

结论:

  • 基因组标记分析为识别转录学可能忽略的功能相关基因提供了有价值的数据集.
  • KLF7成为一种潜在的生物标志物和治疗点,可以提高癌症治疗中CAR-T细胞的疗效.