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Related Concept Videos

Transcription Factors02:16

Transcription Factors

82.7K
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...
82.7K
Transcription Elongation Factors02:35

Transcription Elongation Factors

13.9K
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA...
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Transcription Elongation Factors02:35

Transcription Elongation Factors

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4.8K
General Transcription Factors01:30

General Transcription Factors

7.1K
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...
7.1K
Transcription01:10

Transcription

156.3K
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...
156.3K
Master Transcription Regulators02:23

Master Transcription Regulators

7.8K
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...
7.8K

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Related Experiment Video

Updated: Feb 2, 2026

Reprogramming Mouse Embryonic Fibroblasts with Transcription Factors to Induce a Hemogenic Program
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Transcription factor Ptf1a in development, diseases and reprogramming.

Kangxin Jin1, Mengqing Xiang2

  • 1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China. kxjin@yahoo.com.

Cellular and Molecular Life Sciences : CMLS
|November 25, 2018
PubMed
Summary

The transcription factor Ptf1a is vital for pancreas and neural development. This helix-loop-helix protein

Keywords:
Acinar cellsCell fate specificationDiabetesGABAergicGlutamatergicGlycinergicInheritableInhibitory neurotransmitterPancreatic developmentRetinal developmentSomatic cell reprogrammingTranscriptional regulation

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Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans
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Area of Science:

  • Developmental biology
  • Molecular biology
  • Genetics

Background:

  • Ptf1a is a crucial helix-loop-helix (bHLH) transcription factor.
  • It is selectively expressed in the pancreas, retina, spinal cord, brain, and enteric nervous system.
  • Ptf1a forms a PTF1 complex with E protein and Rbpj/Rbpjl.

Purpose of the Study:

  • To summarize the essential roles of Ptf1a in pancreatic and neural development.
  • To highlight the association of Ptf1a mutations with genetic diseases.
  • To present the surprising finding of Ptf1a's potential in cell reprogramming.

Main Methods:

  • Review of existing literature on Ptf1a function.
  • Analysis of Ptf1a's role in progenitor cell expansion and cell fate specification.
  • Investigation of Ptf1a's involvement in genetic diseases and cell reprogramming.

Main Results:

  • Ptf1a controls progenitor cell expansion and acinar cell specification/maintenance in the pancreas.
  • In neural tissues, Ptf1a specifies inhibitory neuronal cell fates.
  • Ptf1a mutations are linked to pancreatic and cerebellar agenesis.
  • Ptf1a can reprogram fibroblasts into neural stem cells.

Conclusions:

  • Ptf1a is indispensable for pancreatic and neural development.
  • Dysregulation of Ptf1a contributes to congenital diseases.
  • Ptf1a exhibits pleiotropic functions with potential in regenerative medicine.