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Adv Exp Med Biol ; 1131: 131-161, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31646509

RESUMO

Calcium (Ca2+) is a fundamental regulator of cell fate and intracellular Ca2+ homeostasis is crucial for proper function of the nerve cells. Given the complexity of neurons, a constellation of mechanisms finely tunes the intracellular Ca2+ signaling. We are focusing on the sarco/endoplasmic reticulum (SR/ER) calcium (Ca2+)-ATPase (SERCA) pump, an integral ER protein. SERCA's well established role is to preserve low cytosolic Ca2+ levels ([Ca2+]cyt), by pumping free Ca2+ ions into the ER lumen, utilizing ATP hydrolysis. The SERCA pumps are encoded by three distinct genes, SERCA1-3, resulting in 12 known protein isoforms, with tissue-dependent expression patterns. Despite the well-established structure and function of the SERCA pumps, their role in the central nervous system is not clear yet. Interestingly, SERCA-mediated Ca2+ dyshomeostasis has been associated with neuropathological conditions, such as bipolar disorder, schizophrenia, Parkinson's disease and Alzheimer's disease. We summarize here current evidence suggesting a role for SERCA in the neurobiology of neuropsychiatric and neurodegenerative disorders, thus highlighting the importance of this pump in brain physiology and pathophysiology.


Assuntos
Encéfalo , Retículo Endoplasmático , Doenças do Sistema Nervoso , ATPases Transportadoras de Cálcio do Retículo Sarcoplasmático , Encéfalo/enzimologia , Encéfalo/patologia , Retículo Endoplasmático/enzimologia , Regulação Enzimológica da Expressão Gênica , Homeostase , Humanos , Doenças do Sistema Nervoso/enzimologia , Doenças do Sistema Nervoso/fisiopatologia , ATPases Transportadoras de Cálcio do Retículo Sarcoplasmático/genética , ATPases Transportadoras de Cálcio do Retículo Sarcoplasmático/metabolismo
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