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Related Experiment Videos

Somatostatin gene regulation.

O M Andrisani1, J E Dixon

  • 1Biochemistry Department, Purdue University, West Lafayette, Indiana 47907.

Annual Review of Physiology
|January 1, 1990
PubMed
Summary

Researchers identified a key genetic element and a new protein, CREB (cAMP response element-binding protein), crucial for regulating somatostatin gene expression and transcription. This discovery aids in understanding neuropeptide gene regulation and cAMP signaling pathways.

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Area of Science:

  • Molecular Biology
  • Neuroendocrinology
  • Gene Regulation

Background:

  • The cloning of somatostatin cDNA and gene has advanced understanding of its expression.
  • A specific genetic element upstream of the somatostatin mRNA cap site influences gene expression and cAMP-induced transcription.

Purpose of the Study:

  • To identify and characterize the genetic elements and protein factors involved in somatostatin gene regulation.
  • To understand the role of cAMP in the transcriptional control of the somatostatin gene.

Main Methods:

  • Identification of a critical genetic element approximately 40 nucleotides upstream of the somatostatin mRNA cap site.
  • Purification and cloning of the protein that binds to this genetic element.

Main Results:

  • A genetic element crucial for somatostatin gene expression and cAMP-induced transcription was identified.
  • This element led to the discovery and cloning of a novel protein class: somatostatin gene transactivators, named CREB (cAMP response element-binding protein).

Conclusions:

  • The identified genetic element and cloned CREB are vital for understanding somatostatin gene expression and regulation.
  • Cloned CREB facilitates studies on the mechanism of somatostatin gene regulation and cAMP-mediated signal transduction pathways.

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