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Related Concept Videos

Epigenetic Regulation01:37

Epigenetic Regulation

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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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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
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Epistasis Analysis01:09

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Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
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In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
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Epigenetics and sarcoidosis.

Iain R Konigsberg1,2, Lisa A Maier2,3,4, Ivana V Yang5,2,6

  • 1Human Medical Genetics and Genomics Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA iain.konigsberg@cuanschutz.edu.

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This summary is machine-generated.

Epigenetic modifications like DNA methylation and histone changes are key in lung diseases. Understanding these mechanisms can help treat conditions like sarcoidosis and other immune-mediated lung diseases.

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Area of Science:

  • Pulmonary Medicine
  • Epigenetics
  • Immunology

Background:

  • Epigenetic modifications regulate gene expression in lung disease.
  • These modifications are influenced by environmental exposures and genetic factors.
  • They play a role in immune and fibrotic processes relevant to lung pathology.

Purpose of the Study:

  • To review the role of epigenetic modifications in lung disease.
  • To focus on DNA methylation and histone modifications.
  • To discuss their application to sarcoidosis and related lung diseases.

Main Methods:

  • Review of existing literature on epigenetics and lung disease.
  • Focus on DNA methylation and histone modification studies.
  • Analysis of their relevance to sarcoidosis pathogenesis.

Main Results:

  • Epigenetic mechanisms are crucial for gene expression regulation in lung diseases.
  • DNA methylation and histone modifications are key areas of study.
  • These epigenetic changes are implicated in immune and fibrotic responses.

Conclusions:

  • Epigenetic modifications offer novel insights into lung disease mechanisms.
  • Understanding DNA methylation and histone modifications is vital for sarcoidosis research.
  • This knowledge can inform strategies for other exposure-related and immune-mediated lung diseases.