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Involvement of O-GlcNAcylation in astrocyte activation during development of experimental autoimmune encephalomyelitis

Grant number: 19/25305-5
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2020
Effective date (End): February 28, 2021
Field of knowledge:Biological Sciences - Pharmacology
Principal researcher:Thiago Mattar Cunha
Grantee:Larissa Pinto de Andrade
Home Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated research grant:13/08216-2 - CRID - Center for Research in Inflammatory Diseases, AP.CEPID

Abstract

Astrocytes are the most abundant glial cells in the central nervous system (CNS) and are responsible for the energy supply of neurons. In situations of CNS disorders, besides inducing inflammatory response by the release of cytokines and chemokines, they are also able to alter their metabolism to maintain cerebral homeostasis. O-Glycosyl Transferase (OGT) is an enzyme of the hexamine pathway - a branch of the glycolytic pathway - responsible for the O-GlcNAcylation process, which consists of the addition of the UDP-N-acetyl glucosamine group (pathway final product) to hydroxyls of serine/threonine’s target proteins. Literature data suggest that O-GlcNAcylation is associated from inflammatory responses generated by immune cells to the development of neurodegenerative diseases. Previous laboratory data show that OGT is widely expressed in astrocytes. Knowing the relevance of this cell subtype in the development of neurodegenerative processes, such as EAE (Experimental Autoimmune Encephalomyelitis), we aim to investigate the role of OGT in astrocyte activation in vitro, under inflammatory stimuli, and in vivo in the neuroinflammation model (EAE). (AU)

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