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2020 Fiscal Year Final Research Report

The role of Protein Tyrosine Phosphatase 1B in the reward system under a high fat diet condition

Research Project

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Project/Area Number 18K08473
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionNagoya University

Principal Investigator

Banno Ryoichi  名古屋大学, 総合保健体育科学センター, 准教授 (80597865)

Co-Investigator(Kenkyū-buntansha) 有馬 寛  名古屋大学, 医学系研究科, 教授 (50422770)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords肥満 / 食嗜好 / 高脂肪食 / 報酬系 / インスリン / レプチン
Outline of Final Research Achievements

The brain reward system plays an important role in hedonic values of food.The neurons in reward system are regulated by leptin, insulin and inflammation.
We investigated the effect of protein tyrosine phosphatase-1B (PTP1B), which regulates these three factors, on palatability for a high-fat diet.
Our data suggested that PTP1B in the dopaminergic neurons in the ventral tegmental area of the midbrain in the reward system contributes to the formation of preference for a high-fat diet.

Free Research Field

医歯薬学 内科系臨床医学・代謝学

Academic Significance and Societal Importance of the Research Achievements

ファーストフードの過食は肥満となる。ファーストフードに代表される高脂肪食への食嗜好について脳内報酬系ニューロンに着目し解析したところ、少なくともドーパミンニューロンにおけるprotein tyrosine phosphatase-1B (PTP1B)というタンパク質が高脂肪食への嗜好形成に寄与することが示唆された。ファーストフードへの食嗜好性の解明は将来における抗肥満薬開発への一助となる。

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Published: 2022-01-27  

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