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J Neurosci Res. 2018 Feb;96(2):180-193. doi: 10.1002/jnr.24082. Epub 2017 May 16.

A transcriptome-based assessment of the astrocytic dystrophin-associated complex in the developing human brain.

Author information

1
Neuroscience Graduate Program, Oregon Health & Science University, Portland.
2
Department of Anesthesiology and Perioperative Medicine, Oregon Health & Science University, Portland.
3
Department of Neurology, Oregon Health & Science University, Portland.
4
Knight Cardiovascular Institute, Oregon Health & Science University, Portland.

Abstract

Astrocytes play a critical role in regulating the interface between the cerebral vasculature and the central nervous system. Contributing to this is the astrocytic endfoot domain, a specialized structure that ensheathes the entirety of the vasculature and mediates signaling between endothelial cells, pericytes, and neurons. The astrocytic endfoot has been implicated as a critical element of the glymphatic pathway, and changes in protein expression profiles in this cellular domain are linked to Alzheimer's disease pathology. Despite this, basic physiological properties of this structure remain poorly understood including the developmental timing of its formation, and the protein components that localize there to mediate its functions. Here we use human transcriptome data from male and female subjects across several developmental stages and brain regions to characterize the gene expression profile of the dystrophin-associated complex (DAC), a known structural component of the astrocytic endfoot that supports perivascular localization of the astroglial water channel aquaporin-4. Transcriptomic profiling is also used to define genes exhibiting parallel expression profiles to DAC elements, generating a pool of candidate genes that encode gene products that may contribute to the physiological function of the perivascular astrocytic endfoot domain. We found that several genes encoding transporter proteins are transcriptionally associated with DAC genes.

KEYWORDS:

AQP4; SCR_003302; SCR_008083; SCR_010943; astrocytes; dystrophin-associated complex; glymphatic; perivascular endfoot

PMID:
28509351
PMCID:
PMC5995340
DOI:
10.1002/jnr.24082
[Indexed for MEDLINE]
Free PMC Article

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