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ID 117761
Title Alternative
Phenethyl iosothiocyanate activates leptin signaling
Author
Yagi, Miho Osaka Prefecture University
Nakatsuji, Yukiko Osaka Prefecture University
Maeda, Ayumi Osaka Prefecture University|Kobe University
Ota, Hiroki Osaka Prefecture University
Kamikubo, Ryosuke Osaka Prefecture University|The University of Tokyo
Miyoshi, Noriyuki University of Shizuoka
Nakamura, Yoshimasa Okayama University
Content Type
Journal Article
Description
Obesity, a principal risk factor for the development of diabetes mellitus, heart disease, and hypertension, is a growing and serious health problem all over the world. Leptin is a weight-reducing hormone produced by adipose tissue, which decreases food intake via hypothalamic leptin receptors (Ob-Rb) and the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) signaling pathway. Protein tyrosine phosphatase 1B (PTP1B) negatively regulates leptin signaling by dephosphorylating JAK2, and the increased activity of PTP1B is implicated in the pathogenesis of obesity. Hence, inhibition of PTP1B may help prevent and reduce obesity. In this study, we revealed that phenethyl isothiocyanate (PEITC), a naturally occurring isothiocyanate in certain cruciferous vegetables, potently inhibits recombinant PTP1B by binding to the reactive cysteinyl thiol. Moreover, we found that PEITC causes the ligand-independent phosphorylation of Ob-Rb, JAK2, and STAT3 by inhibiting cellular PTP1B in differentiated human SH-SY5Y neuronal cells. PEITC treatment also induced nuclear accumulation of phosphorylated STAT3, resulting in enhanced anorexigenic POMC expression and suppressed orexigenic NPY/AGRP expression. We demonstrated that oral administration of PEITC to mice significantly reduces food intake, and stimulates hypothalamic leptin signaling. Our results suggest that PEITC might help prevent and improve obesity.
Journal Title
PLOS ONE
ISSN
19326203
Publisher
PLOS
Volume
13
Issue
11
Start Page
e0206748
Published Date
2018-11-01
Rights
This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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DOI (Published Version)
URL ( Publisher's Version )
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language
eng
TextVersion
Publisher
departments
Medical Sciences