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Review
.2021 Jul 28:9:703084.
doi: 10.3389/fcell.2021.703084. eCollection 2021.

Hypoxia-Inducible Factor (HIF) in Ischemic Stroke and Neurodegenerative Disease

Affiliations
Review

Hypoxia-Inducible Factor (HIF) in Ischemic Stroke and Neurodegenerative Disease

Elena V Mitroshina et al. Front Cell Dev Biol..

Abstract

Hypoxia is one of the most common pathological conditions, which can be induced by multiple events, including ischemic injury, trauma, inflammation, tumors, etc. The body's adaptation to hypoxia is a highly important phenomenon in both health and disease. Most cellular responses to hypoxia are associated with a family of transcription factors called hypoxia-inducible factors (HIFs), which induce the expression of a wide range of genes that help cells adapt to a hypoxic environment. Basic mechanisms of adaptation to hypoxia, and particularly HIF functions, have being extensively studied over recent decades, leading to the 2019 Nobel Prize in Physiology or Medicine. Based on their pivotal physiological importance, HIFs are attracting increasing attention as a new potential target for treating a large number of hypoxia-associated diseases. Most of the experimental work related to HIFs has focused on roles in the liver and kidney. However, increasing evidence clearly demonstrates that HIF-based responses represent an universal adaptation mechanism in all tissue types, including the central nervous system (CNS). In the CNS, HIFs are critically involved in the regulation of neurogenesis, nerve cell differentiation, and neuronal apoptosis. In this mini-review, we provide an overview of the complex role of HIF-1 in the adaptation of neurons and glia cells to hypoxia, with a focus on its potential involvement into various neuronal pathologies and on its possible role as a novel therapeutic target.

Keywords: Alzheimer’s disease; HIF; Parkinson’s disease; adaptation; hypoxia; hypoxia-inducible factor; ischemia; neurodegeneration.

Copyright © 2021 Mitroshina, Savyuk, Ponimaskin and Vedunova.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

FIGURE 1
FIGURE 1
Scheme of HIF-mediated regulation of adaptive cell reactions. AKT1, the serine-threonine protein kinase AKT1; Bax, apoptosis regulator protein, also known as bcl-2-like protein 4; BNIP3, a member of the apoptotic Bcl-2 protein family; EPO, erythropoietin; GLUT-1, facultative glucose transporter 1; HIF, hypoxia-inducible factor; MCT4, monocarboxylate transporter 4; p53, pro-apoptotic transcription factor; PI3K, phosphoinositide 3-kinase; PHD, HIF prolyl hydroxylase; Ub, ubiquitin; VEGF, vascular endothelial growth factor; VHL, von Hippel–Lindau protein; vWF, von Willebrand factor.
FIGURE 2
FIGURE 2
Protective role of HIF-1 pathway in neurodegeneration pathogenesis. Red arrows indicate negative effects and green lines and arrows mean positive effects. Aβ, amyloid beta; AD, Alzheimer’s disease; AKT, the serine-threonine protein kinase AKT; ALS, amyotrophic lateral sclerosis; EPO, erythropoietin; GLUT-1/3, facultative glucose transporter 1 or 3; HIF, hypoxia-inducible factor; mTORC1, mammalian target of rapamycin complex 1 or mechanistic target of rapamycin complex 1; PD, Parkinson’s disease; ROX, reactive oxygen species; Tau, Tau protein; VEGF, vascular endothelial growth factor.
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