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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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Epigenetic Regulation01:37

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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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 Homeobox Genes: Classification, Regulation, Biological Functions, and Diseases.

Maedeh Dadzadi1, Shahin Ramazi2, Mona Darvazi2

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Summary
This summary is machine-generated.

Homeobox genes regulate development and cell differentiation. Their dysregulation is linked to human disorders, including cancers like lung cancer, with epigenetic factors playing a key role.

Keywords:
cancerepigeneticshomeobox geneslung cancernoncancerous diseasespathological variants

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Area of Science:

  • Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • Homeobox genes are crucial transcription factors regulating fundamental biological processes.
  • Dysregulation of homeobox gene expression is associated with various human disorders.
  • Hundreds of studies link homeobox genes to diverse types of cancer.

Purpose of the Study:

  • To provide an integrative overview of homeobox gene biology.
  • To summarize their classification, physiological, and pathological roles.
  • To focus on the role of dysregulated homeobox genes in noncancerous and cancerous diseases, particularly lung cancer.

Main Methods:

  • Literature review and synthesis of existing studies on homeobox genes.
  • Classification of homeobox genes based on their functions.
  • Analysis of the impact of gene dysregulation in various diseases.

Main Results:

  • Homeobox genes play diverse roles in development and cell differentiation.
  • Dysregulation is implicated in congenital, metabolic, and neurodegenerative disorders.
  • Epigenetic alterations in homeobox genes are central to the progression of lung cancer and other major malignancies.

Conclusions:

  • Homeobox gene dysregulation is a significant factor in human pathology.
  • Understanding these roles is critical for diagnosing and treating diseases.
  • Targeting epigenetic mechanisms in homeobox genes may offer therapeutic strategies for cancer.