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Related Concept Videos

Transcription01:10

Transcription

138.5K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
138.5K
Transcription01:17

Transcription

24.1K
Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
24.1K
Erythropoiesis01:14

Erythropoiesis

5.7K
Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia,...
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Erythropoiesis01:14

Erythropoiesis

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4.0K
Overview of Hematopoiesis01:20

Overview of Hematopoiesis

9.9K
Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
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Master Transcription Regulators02:23

Master Transcription Regulators

6.1K
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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Related Experiment Video

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Lentiviral-mediated Knockdown During Ex Vivo Erythropoiesis of Human Hematopoietic Stem Cells
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Transcriptome dynamics during human erythroid differentiation and development.

Yadong Yang1, Hai Wang1, Kai-Hsin Chang2

  • 1Laboratory of Disease Genomics and Individualized Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101, China.

Genomics
|October 15, 2013
PubMed
Summary
This summary is machine-generated.

This study maps gene expression changes during human stem cell differentiation into red blood cells. It reveals key gene networks involved in early development and potential applications for transfusion products.

Keywords:
Cell differentiationDevelopmentErythropoiesisGene regulatory networksHigh-throughput RNA sequencing

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Area of Science:

  • Hematology
  • Stem Cell Biology
  • Genomics

Background:

  • Erythroid differentiation is a complex process involving significant cellular and molecular changes.
  • Understanding the transcriptional regulation of erythropoiesis is crucial for regenerative medicine and treating blood disorders.

Purpose of the Study:

  • To elucidate the genome-wide transcription dynamics during human erythroid differentiation.
  • To identify key regulatory networks and genes governing the transition from embryonic to adult erythropoiesis.

Main Methods:

  • High-throughput sequencing technology was employed to analyze gene expression.
  • Human embryonic stem cells (HESCs) and erythroid cells at embryonic (ESER), fetal (FLER), and adult (PBER) stages were profiled.

Main Results:

  • Gene expression decreased, while total expression intensity increased during differentiation.
  • Numerous differentially expressed genes were identified across developmental transitions, impacting pluripotency, specification, growth, and cell interactions.
  • Dynamic gene networks and central nodes were characterized for each differentiation stage.

Conclusions:

  • The study provides a foundational understanding of erythroid differentiation mechanisms.
  • Findings suggest potential applications for early-stage erythroid cells (ESERs) in clinical transfusion products.