Cited by 77Barrier Structure and Function StudiesNeonatal and fetal brain pathologyMicroRNA in disease regulation

MicroRNA-210 Suppresses Junction Proteins and Disrupts Blood-Brain Barrier Integrity in Neonatal Rat Hypoxic-Ischemic Brain Injury

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Ma, Qingyi, Dasgupta, Chiranjib, Li, Yong, Huang, Lei, Zhang, Lubo·2017·International Journal of Molecular Sciences

Abstract

Cerebral edema, primarily caused by disruption of the blood-brain barrier (BBB), is one of the serious complications associated with brain injury in neonatal hypoxic-ischemic encephalopathy (HIE). Our recent study demonstrated that the hypoxic-ischemic (HI) treatment significantly increased microRNA-210 (miR-210) in the neonatal rat brain and inhibition of miR-210 provided neuroprotection in neonatal HI brain injury. The present study aims to determine the role of miR-210 in the regulation of BBB integrity in the developing brain. miR-210 mimic was administered via intracerebroventricular injection (i.c.v.) into the brain of rat pups. Forty-eight hours after the injection, a modified Rice-Vannucci model was conducted to produce HI brain injury. Post-assays included cerebral edema analysis, western blotting, and immunofluorescence staining for serum immunoglobulin G (IgG) leakage. The results showed that miR-210 mimic exacerbated cerebral edema and IgG leakage into the brain parenchyma. In contrast, inhibition of miR-210 with its complementary locked nucleic acid oligonucleotides (miR-210-LNA) significantly reduced cerebral edema and IgG leakage. These findings suggest that miR-210 negatively regulates BBB integrity i n the neonatal brain. Mechanistically, the seed sequences of miR-210 were identified complementary to the 3′ untranslated region (3′ UTR) of the mRNA transcripts of tight junction protein occludin and adherens junction protein β-catenin, indicating downstream targets of miR-210. This was further validated by in vivo data showing that miR-210 mimic significantly reduced the expression of these junction proteins in rat pup brains. Of importance, miR-210-LNA preserved the expression of junction proteins occludin and β-catenin from neonatal HI insult. Altogether, the present study reveals a novel mechanism of miR-210 in impairing BBB integrity that contributes to cerebral edema formation after neonatal HI insult, and provides new insights in miR-210-LNA mediated neuroprotection in neonatal HI brain injury.

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Crossref · 10.3390/ijms18071356

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  • Recent findings of a long-range crosstalk between periphery and CNS via miRNA-containing exosomes position the BBB in the center of this communication under physiological and pathophysiological conditions.

    “Recent findings of a long-range crosstalk between periphery and CNS via miRNA-containing exosomes position the BBB in the center of this communication (685) under physiological (635, 660) and pathophysiological (378, 493, 498, 587) conditions.”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [378]

    The Discussion (page unavailable) reports that miR-210 disrupts BBB integrity after hypoxic-ischemic injury in neonatal rats, supporting a role for miRNA and the BBB under a pathophysiological condition. It does not describe miRNA-containing exosomes or long-range communication between the periphery and CNS. (LLM, conf=0.84)

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Authors
Ma, Q., Dasgupta, C., Li, Y., Huang, L., & Zhang, L.
Affiliations
  • Loma Linda University (US)
  • Center for Neonatal Biology, Division of Pharmacology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
Corresponding author
Ma, Qingyi
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2017-06-24
Volume
18
Issue
7
Pages
1356
ISSN
1422-0067 (ISSN-L)
OpenAlex
W2642416886
Cited by
76
References
58
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 8 · 2022: 11 · 2021: 10 · 2020: 20 · 2019: 13 · 2018: 4
FWCI
5.04
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • The Scholars Repository - LLU (Loma Linda University) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • American Heart Association WSA winter 2015 Beginning Grant-in-Aid (15BGIA25750063)
  • National Institutes of Health (HL118861)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal and fetal brain pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
Keywords
miR-210, blood-brain barrier integrity, hypoxic-ischemic brain injury, neonatal hypoxic-ischemic encephalopathy, cerebral edema, occludin, β-catenin, tight junction proteins, adherens junction proteins, neuroprotection, 3' untranslated region, Rice-Vannucci model
MeSH terms
Animals, Animals, Newborn, Blood-Brain Barrier, Brain Edema, Disease Models, Animal, Female, Gene Expression Regulation, Immunoglobulin G, Intercellular Junctions, Male, Permeability, Biomarkers, Hypoxia-Ischemia, Brain, RNA Interference, MicroRNAs, beta Catenin, Rats, Occludin

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