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相关概念视频

General Transcription Factors01:30

General Transcription Factors

5.3K
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...
5.3K
Transcription Factors02:16

Transcription Factors

75.8K
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...
75.8K
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

1.4K
Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
1.4K
Master Transcription Regulators02:23

Master Transcription Regulators

6.9K
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...
6.9K
Lineage Commitment01:21

Lineage Commitment

3.0K
Commitment is the  process whereby stem cells:
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相关实验视频

Updated: Jun 26, 2025

Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis
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Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis

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提高胎儿血红蛋白:最近发现的调节器和机制.

Eugene Khandros1,2, Gerd A Blobel1,2

  • 1Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA.

Blood
|May 10, 2024
PubMed
概括

科学家利用CRISPR技术发现了扭转胎儿血红蛋白转向成年血红蛋白的新方法. 这为治疗状细胞病和β-血病等血液疾病提供了新的希望.

科学领域:

  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.
  • 血液学 血液学 血液学

背景情况:

  • 人类在发育过程中自然会将血红蛋白类型从胎儿转变为成人.
  • 成年β-环球蛋白基因的缺陷会导致诸如状细胞病和β-血病等疾病.
  • 逆转这种发育转换是一个关键的治疗目标.

研究的目的:

  • 调查了解胎儿到成年人血红蛋白开关的最新进展.
  • 突出CRISPR工具对识别此切换的新调节者的影响.
  • 探索对血红蛋白病的治疗机会.

主要方法:

  • 使用基于CRISPR的高通量遗传选.
  • 确定了影响血红蛋白开关的新型分子调节剂.
  • 审查了该领域的最新发展.

主要成果:

  • 克里斯普尔工具使得第一个高通量基因选用于血红蛋白开关调节器成为可能.
  • 已经确定了许多新的分子标.
  • 这些发现为药理干预开辟了道路.

结论:

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Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay
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Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay

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Direct Lineage Reprogramming of Adult Mouse Fibroblast to Erythroid Progenitors
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Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay
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Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay

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Direct Lineage Reprogramming of Adult Mouse Fibroblast to Erythroid Progenitors

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  • 最近的CRISPR进展加速了调节胎儿到成人血红蛋白开关的分子的发现.
  • 这些发现为针对血红蛋白病变的治疗策略提供了新的希望.
  • 对于无法进行基因治疗的患者来说,药理干预可能会变得容易获得.