Skip to main content
Article
Transcriptional Profiling of PRKG2-Null Growth Plate Identifies Putative Down-Stream Targets of PRKG2
BMC Research Notes
  • James Eugene Koltes, Iowa State University
  • Dinesh Kumar, National Bureau of Animal Genetic Resources
  • Ranjit S. Kataria, National Bureau of Animal Genetic Resources
  • Vickie L. Cooper, Iowa State University
  • James M Reecy, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2015
DOI
10.1186/s13104-015-1136-6
Abstract

Kinase activity of cGMP-dependent, type II, protein kinase (PRKG2) is required for the proliferative to hypertrophic transition of growth plate chondrocytes during endochondral ossification. Loss of PRKG2 function in rodent and bovine models results in dwarfism. The objective of this study was to identify pathways regulated or impacted by PRKG2 loss of function that may be responsible for disproportionate dwarfism at the molecular level. Microarray technology was used to compare growth plate cartilage gene expression in dwarf versus unaffected Angus cattle to identify putative downstream targets of PRGK2. Pathway enrichment of 1284 transcripts (nominal p < 0.05) was used to identify candidate pathways consistent with the molecular phenotype of disproportionate dwarfism. Analysis with the DAVID pathway suite identified differentially expressed genes that clustered in the MHC, cytochrome B, WNT, and Muc1 pathways. A second analysis with pathway studio software identified differentially expressed genes in a host of pathways (e.g. CREB1, P21, CTNNB1, EGFR, EP300, JUN, P53, RHOA, and SRC). As a proof of concept, we validated the differential expression of five genes regulated by P53, including CEBPA, BRCA1, BUB1, CD58, and VDR by real-time PCR (p < 0.05). Known and novel targets of PRKG2 were identified as enriched pathways in this study. This study indicates that loss of PRKG2 function results in differential expression of P53 regulated genes as well as additional pathways consistent with increased proliferation and apoptosis in the growth plate due to achondroplastic dwarfism.

Comments

This article is from BMC Research Notes 8 (2015): 177, doi:10.1186/s13104-015-1136-6. Posted with permission.

Rights
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Copyright Owner
James E. Koltes, et al
Language
en
File Format
application/pdf
Citation Information
James Eugene Koltes, Dinesh Kumar, Ranjit S. Kataria, Vickie L. Cooper, et al.. "Transcriptional Profiling of PRKG2-Null Growth Plate Identifies Putative Down-Stream Targets of PRKG2" BMC Research Notes Vol. 8 (2015) p. 1 - 10
Available at: http://works.bepress.com/james_reecy/86/