Access Type

Open Access Thesis

Date of Award

January 2014

Degree Type

Thesis

Degree Name

M.S.

Department

Nutrition and Food Science

First Advisor

Ahmad R. Heydari

Abstract

ABSTRACT

EFFECT OF FOLATE DEFICIENCY ON EXPRESSION OF PROTEINS ON THE mTOR SIGNALING PATHWAY IN THE BRAIN OF C57/BL6 MICE

by

NIKITA PATEL

December 2014

Advisor: Dr. Ahmad Heydari

Major: Nutrition and Food Science

Degree: Master of Science

Nutrient-gene interactions can significantly impact several cellular processes in the human body by altering important molecular pathways. Nutrition can affect brain structure, function and development throughout the life cycle; it can have a profound effect on cognition ad mental health leading to neurodegenerative diseases. It is important to elucidate the mechanisms by which diet can effect signaling pathways in the brain. The alteration of the mTOR pathway has been implicated to be involved in the pathophysiology of neurodegenerative diseases. Due to the established role of folate playing a role in modulating the mTOR pathway, we decided to investigate how folate deficiency alters mTOR signaling in the brain. We hypothesized that dietary folate restriction alters the mTOR signaling network in the brain to provide protection against the onset and progression of neurodegenerative diseases. In response to the FD diet we observed higher autophagy occurrence however increased expression of p-S6K and p-AKT contrary to decreased REDD-I and increased IPMK expression suggested mTOR activation. Higher autophagy occurrence was indicated by increased expression of Beclin and LC3. Interestingly enough, even though IPMK levels suggested mTOR inhibition, another upstream effector p-AMPK suggested mTOR activation.

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