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J Cell Biochem. 2017 Sep;118(9):2828-2840. doi: 10.1002/jcb.25933. Epub 2017 May 18.

Peptidomics Analysis of Transient Regeneration in the Neonatal Mouse Heart.

Author information

1
Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
2
Departments of Cardiology, Taizhou People's Hospital, Taizhou 225300, China.

Abstract

Neonatal mouse hearts have completely regenerative capability after birth, but the ability to regenerate rapidly lost after 7 days, the mechanism has not been clarified. Previous studies have shown that mRNA profile of adult mouse changed greatly compared to neonatal mouse. So far, there is no research of peptidomics related to heart regeneration. In order to explore the changes of proteins, enzymes, and peptides related to the transient regeneration, we used comparative petidomics technique to compare the endogenous peptides in the mouse heart of postnatal 1 and 7 days. In final, we identified 236 differentially expressed peptides, 169 of which were upregulated and 67 were downregulated in the postnatal 1 day heart, and also predicted 36 functional peptides associated with transient regeneration. The predicted 36 candidate peptides are located in the important domains of precursor proteins and/or contain the post-transcriptional modification (PTM) sites, which are involved in the biological processes of cardiac development, cardiac muscle disease, cell proliferation, necrosis, and apoptosis. In conclusion, for the first time, we compared the peptidomics profiles of neonatal heart between postnatal 1 day and postnatal 7 day. This study provides a new direction and an important basis for the mechanism research of transient regeneration in neonatal heart. J. Cell. Biochem. 118: 2828-2840, 2017.

KEYWORDS:

HEART REGENERATION; MASS SPECTROMETRY; NEONATAL MOUSE; PEPTIDOMICS

PMID:
28198139
DOI:
10.1002/jcb.25933
[Indexed for MEDLINE]

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