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Related Concept Videos

Master Transcription Regulators02:23

Master Transcription Regulators

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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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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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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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The lungs are a pair of vital organs connected to the trachea via the left and right bronchi. The base of these organs meets the dome-shaped muscle known as the diaphragm. Encased by the pleurae, the lungs contact the mediastinum. The right lung is shorter yet wider, and has a larger volume than the left lung. The left lung has an indentation known as the cardiac notch. The superior region of the lungs is referred to as the apex, whereas the base is the lower region near the diaphragm. The...
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Regulation of Expression Occurs at Multiple Steps02:24

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Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
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Related Experiment Video

Updated: May 2, 2026

Generation of 3D Whole Lung Organoids from Induced Pluripotent Stem Cells for Modeling Lung Developmental Biology and Disease
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Gene regulatory networks governing lung specification.

Scott A Rankin1, Aaron M Zorn

  • 1Division of Developmental Biology, Department of Pediatrics, Perinatal Institute, Cincinnati Children's Hospital, College of Medicine, University of Cincinnati, Cincinnati, Ohio, 45229.

Journal of Cellular Biochemistry
|March 20, 2014
PubMed
Summary

Early lung development relies on progenitor cells guided by signaling pathways. Understanding the gene regulatory network (GRN) controlling this process is key for future regenerative medicine applications.

Keywords:
GENE REGULATORY NETWORKLUNG DEVELOPMENTNkx2.1RESPIRATORY EPITHELIUMSPECIFICATION

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Area of Science:

  • Developmental biology
  • Genomics
  • Regenerative medicine

Background:

  • Respiratory system epithelial lining originates from ventral foregut endoderm progenitor cells.
  • Paracrine signaling pathways are critical for respiratory progenitor development.
  • The post-genomic era presents challenges in understanding gene regulatory networks (GRNs).

Purpose of the Study:

  • To review the current understanding of the GRN governing lung specification.
  • To identify key knowledge gaps in lung development research.
  • To highlight emerging opportunities for advancing lung development studies and regenerative medicine.

Main Methods:

  • Review of existing literature on lung development.
  • Analysis of paracrine signaling pathways and transcription factor interactions.
  • Focus on genome-wide interactions within the gene regulatory network (GRN).

Main Results:

  • Identification of critical paracrine signaling pathways involved in lung progenitor development.
  • Elucidation of the complex gene regulatory network (GRN) orchestrating early lung development.
  • Recognition of significant gaps in current knowledge regarding lung specification.

Conclusions:

  • A comprehensive understanding of the GRN is essential for orchestrating lung development.
  • Further research into GRNs will accelerate progress in lung development and regenerative medicine.
  • Emerging technologies offer unprecedented opportunities to study lung development.