Faculty Collaboration Database

Localization and expression profile of Group I and II Activators of G-protein Signaling in the kidney. J Mol Histol 2015 Apr;46(2):123-36

Date

12/24/2014

Pubmed ID

25533045

Pubmed Central ID

PMC4369180

DOI

10.1007/s10735-014-9605-0

Scopus ID

2-s2.0-84925517942 (requires institutional sign-in at Scopus site)   12 Citations

Abstract

Activators of G-protein Signaling (AGS) are a family of accessory proteins that were discovered as modulators of heterotrimeric G-protein subunits. The primary aim of the present study was to localize Group I and II AGS proteins and determine the renal expression profile using immunohistochemistry and quantitative RT-PCR, respectively, during normal and injured states of the kidney. Group I AGS1 was found to be predominantly localized to the proximal tubule, Group II AGS3 and AGS5 were exclusively localized to the distal tubular segments, and Group II AGS6 was ubiquitously expressed in every nephron segment of the rodent kidney. In rat kidneys following ischemia-reperfusion injury (IRI), Group I AGS1 mRNA was dramatically increased after 24 h by fivefold (P < 0.05), whereas Group II AGS3 and AGS4 mRNA was significantly decreased at the same time point (P < 0.05). No significant change in the transcript levels were detected at other time points for any of the AGS genes between control and IRI groups. In polycystic diseased kidneys, mRNA levels for AGS3, AGS4 and AGS6 was significantly increased (P < 0.05) by 75-80 % in PCK rat kidneys. The identification of Group I and II AGS mRNA and protein in the kidney may provide insight into the potential mechanism of action during normal and varying states of renal disease or injury.

Author List

Lenarczyk M, Pressly JD, Arnett J, Regner KR, Park F

Author

Kevin R. Regner MD Interim Chair, Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Animals
GTP-Binding Proteins
Gene Expression
Guanine Nucleotide Dissociation Inhibitors
Kidney
Male
Mice
Polycystic Kidney Diseases
Protein Transport
RGS Proteins
RNA, Messenger
Rats, Sprague-Dawley
Reperfusion Injury
Signal Transduction