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Characterization of murine PACAP mRNA
1Discovery Research Laboratories I, Takeda Chemical Industries, Ltd, Ibaraki, Japan.
Peptides
|January 1, 1995
Summary
Researchers isolated a murine PACAP precursor cDNA, finding its sequence highly similar to other mammals. This identical mature PACAP structure in mice supports further physiological and pathophysiological studies.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neuropeptide with diverse physiological roles.
- Understanding the genetic and structural basis of PACAP is crucial for studying its functions.
Purpose of the Study:
- To isolate and characterize the murine PACAP precursor cDNA.
- To compare the murine PACAP sequence with other mammalian species.
- To establish a foundation for using mice in PACAP research.
Main Methods:
- Screening of a murine brain cDNA library.
- DNA sequencing and amino acid sequence analysis.
- Northern blot analysis to determine transcript expression.
Main Results:
- A murine PACAP precursor cDNA was successfully isolated.
- The amino acid sequence showed high similarity (81-93%) to rat, human, and ovine precursors.
- The mature murine PACAP sequence is identical to that of sheep, humans, and rats.
- A 2.4 kb transcript for the PACAP precursor was detected in the murine brain.
Conclusions:
- Murine PACAP is highly conserved across mammalian species, with identical mature peptide sequences.
- The expression of PACAP precursor mRNA in the brain is confirmed.
- The identity of murine PACAP to its human counterpart validates the use of mice for PACAP-related physiological and pathophysiological research.