mRNA expression of transient receptor potential melastatin (TRPM) channels 2 and 7 in perinatal brain development

International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience
Melanie RatnamMichelle M Aarts

Abstract

TRPM7 and TRPM2 are non-specific cation channels of the Transient Receptor Potential channel superfamily. Each channel has gained attention for their potential to mediate oxidative and anoxic cell death (Rama and García, 2016; Nazıroğlu, 2011a; Abiria et al., 2017; Sun, 2017), however their physiological expression and roles in the developing brain remain poorly defined. We employed real-time reverse transcription PCR to examine mRNA expression of TRPM7 and TRPM2 in the developing rat brain and brain-specific cell types. We determined the temporal and spatial expression patterns at four developmental time points (postnatal day 7, 14, 21, and 90) in four critical regions of the brain (cortex, hippocampus, striatum, and cerebellum) and examined gene expression in neuronal, astrocytic, and microglial primary cell cultures. Our results revealed that TRPM7 mRNA expression peaks in the cortex at 2-weeks after birth, and thus correlates most closely with a period of rat brain development associated with neurite outgrowth, which is heightened at 2-weeks after birth. Our cell-specific gene expression assays revealed that TRPM7 was expressed at equivalent levels in neurons, astrocytes, and microglia. Conversely, TRPM2 was most highly exp...Continue Reading

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Citations

May 11, 2019·Cellular and Molecular Life Sciences : CMLS·Nashat AbumariaAndrew N Clarkson
Nov 27, 2020·Frontiers in Cell and Developmental Biology·Boris LavanderosOscar Cerda

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