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Expression of CNPY2 in mouse tissues: quantification and localization.

Kota Hatta1, Jian Guo2, Ana Ludke2

  • 1Division of Cardiovascular Surgery, Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.

Plos One
|November 14, 2014
PubMed
Summary
This summary is machine-generated.

Canopy FGF signaling regulator 2 (CNPY2) is widely expressed in mouse tissues, particularly the heart, lung, and liver. This study provides the first in vivo evidence of CNPY2 distribution and cell-type specific expression.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Canopy FGF signaling regulator 2 (CNPY2) is an FGF21-modulated protein with a saposin B-type domain.
  • In vitro studies suggest CNPY2 enhances neurite outgrowth and stabilizes low-density lipoprotein receptor expression.
  • Limited in vivo data exist regarding CNPY2's normal expression patterns and cellular localization.

Purpose of the Study:

  • To investigate the in vivo expression profile of CNPY2 across various mouse tissues.
  • To identify specific cell types expressing CNPY2 protein within these tissues.
  • To lay the groundwork for understanding CNPY2's biological functions.

Main Methods:

  • Quantitative PCR (qPCR) was used to assess CNPY2 mRNA levels in mouse organs.
  • Enzyme-Linked Immunosorbent Assay (ELISA) was employed to quantify CNPY2 protein levels.
  • Immunohistochemistry was performed to determine CNPY2 protein localization in different cell types.

Main Results:

  • CNPY2 expression varied significantly among mouse organs, with highest levels detected in the heart, lung, and liver.
  • Immunohistochemistry revealed CNPY2 presence in skeletal, cardiac, and smooth muscle myocytes, endothelial cells, and epithelial cells.
  • CNPY2 protein was also detected in mouse blood and in human and mouse uteri.

Conclusions:

  • CNPY2 exhibits widespread tissue distribution in vivo.
  • The identified expression patterns suggest diverse, yet uncharacterized, biological roles for CNPY2.
  • Further research is warranted to elucidate the specific functions of CNPY2 in different cellular contexts.