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NCLX in astrocytic function: metabolism and neuronal homeostasis

Grant number: 19/22178-2
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): February 01, 2020
Effective date (End): January 29, 2021
Field of knowledge:Biological Sciences - Biochemistry - Metabolism and Bioenergetics
Principal researcher:Alicia Juliana Kowaltowski
Grantee:João Victor Cabral Costa
Supervisor abroad: Juan P Bolaños
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Universidad de Salamanca (USAL), Spain  
Associated to the scholarship:17/14713-0 - Mitochondrial Ca2+ Handling in the Central Nervous System and Energy Metabolism Regulation, BP.DR

Abstract

Ca2+ is an ion of seminal importance not only in the context of excitotoxicity, but also physiologically, participating in many key processes in the central nervous system, including dendritic development, synaptogenesis, neurotransmitter release, and synaptic plasticity. Ca2+ ions can also act as a marker for activity regarding energetic demands, and are an important regulator of metabolism, coupling metabolic needs dictated by cellular activity with ATP production. Mitochondria have a well-developed Ca2+ transport system. Mitochondrial Ca2+ efflux is physiologically carried out by the mitochondrial Na2+/Ca2+ exchanger (NCLX), which also has a potential role in the regulation of synaptic transmission and plasticity. NCLX was recently associated with pathological mechanisms of Parkinson's disease models, and its expression was shown to be decreased in - and inversely correlated with the prognosis of - Alzheimer's disease. In astrocytes, an important glial cell type with a complex and a highly arborized structure, NCLX influences the shaping of cytosolic Ca2+ signaling, modulating proliferation and glutamate release. The function of NCLX in cellular homeostasis, however, is still mainly unexplored by the literature. This project aims to investigate the role of NCLX on astrocytic function in vivo and in vitro.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PEREIRA JR, O. R.; RAMOS, V. M.; CABRAL-COSTA, J. V.; KOWALTOWSKI, A. J. Changes in mitochondrial morphology modulate LPS-induced loss of calcium homeostasis in BV-2 microglial cells. Journal of Bioenergetics and Biomembranes, v. 53, n. 2, p. 109-118, APR 2021. Web of Science Citations: 0.
PEREIRA JR, O. R.; RAMOS, V. M.; CABRAL-COSTA, J. V.; KOWALTOWSKI, A. J. Changes in mitochondrial morphology modulate LPS-induced loss of calcium homeostasis in BV-2 microglial cells. Journal of Bioenergetics and Biomembranes, v. 53, n. 2 FEB 2021. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.