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Related Experiment Videos

Preprocorticotropin releasing hormone: cDNA sequence and in vitro processing.

B G Robinson1, L A D'Angio, K B Pasieka

  • 1Neuroendocrine Genetics Laboratory, Howard Hughes Medical Institute, Boston, MA 02115.

Molecular and Cellular Endocrinology
|February 1, 1989
PubMed
Summary

Researchers characterized human placental corticotropin-releasing hormone (hCRH) cDNA. The findings reveal structural features of hCRH mRNA and peptide, aiding understanding of placental CRH regulation during gestation.

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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Human Reproduction

Background:

  • Human corticotropin-releasing hormone (hCRH) is produced in the hypothalamus and placenta.
  • Placental hCRH expression significantly increases late in gestation.

Purpose of the Study:

  • To isolate and characterize a human placental CRH cDNA clone.
  • To investigate the in vitro translation and co-translational processing of hCRH.
  • To elucidate the structural features of placental hCRH mRNA and peptide.

Main Methods:

  • Isolation and characterization of human placental CRH cDNA.
  • In vitro translation of hCRH cRNA synthesized from the cDNA.
  • Sequence analysis of the cDNA and translated peptide.

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Main Results:

  • Confirmed exon-intron junctions and identified at least two transcription initiation sites in the placenta.
  • The translated preproCRH peptide possesses a hydrophobic signal sequence, indicating secretion capability.
  • Structural analysis provides insights into placental CRH regulation.

Conclusions:

  • The study successfully characterized placental hCRH cDNA and its translated product.
  • Identified key structural elements of hCRH mRNA and peptide relevant to placental function.
  • Findings contribute to understanding the regulation of hCRH during human pregnancy.