RT Journal
T1 POST-TRANSCRIPTIONAL REGULATION OF POLYMORPHIC PROTEASE-ACTIVATED RECEPTOR-2 (PAR-2) GENE DISPLAYING CORRELATION WITH SKIN PIGMENTATION IN CATTLE
A1 A. W. Nizamani
A1 O. Fumière
A1 L. Forestier
A1 S. Presciuttini
A1 H. Leveziel
A1 1 Z. A. Nizamani
A1 A. Oulmouden
JF Journal of Animal and Plant Sciences
JO JAPS
SN 1018-7081
VO 24
IS 1
SP 103
OP 112
YR 2014
FD 2014/02/01
DO DOI NA
AB <p>Protease-activated receptor-2 (PAR-2) is a trypsin-activated member of the PAR receptor family. Following cleavage, the newly created N-terminus acts as a tethered receptor-activating ligand.<em>PAR-2</em>&nbsp;is expressed in keratinocytes and enhances the phagocytosis rate of keratinocytes, which leads to increased melanosome transfer and skin pigmentation. Here, we investigated to see whether the bovine&nbsp;<em>bPAR-2</em>&nbsp;plays a role in pigmentation of cattle skins resulting in shades ranging from dark-black to white. We have identifiedtwo&nbsp;<em>bPAR-2</em>natural variants located in the tethered ligand for the first time. Surprisingly, none of these seems to affect the receptor activity in relation to skin pigmentation as suggested by tethered ligand structure-activity relationships studies. Furthermore, we also showed for the first timethat<em>bPAR-2</em>is regulated at a post-transcriptional level in pigmentation-skin dependent manner. Modulation of PAR-2 activity enhances or decreases melanosome transfer from melanocytes to keratinocytes which results in a variation in skin pigmentation. In this study, we found that&nbsp;<em>bPAR-2&nbsp;</em>was subjected to post-transcriptional regulation in pigmentation-skin dependent manner and that two variants affecting its tethered ligand did not affect skin pigmentation. Understanding the regulation of PAR-2 expression and the activity of its tethered ligand is important, because PAR-2 is involved in a key step of skin pigmentation and plays a role in lightening or darkening of the skin.</p>
K1 Cattle, PAR-2, skin pigmentation, post-transcriptional regulation
PB Pakistan Agricultural Scientists Forum
LK https://thejaps.org.pk/AbstractView.aspx?mid=2014-JAPS-16