Skip to main content
Log in

Altered MicroRNA Expression in Intracranial Aneurysmal Tissues: Possible Role in TGF-β Signaling Pathway

  • Original Research
  • Published:
Cellular and Molecular Neurobiology Aims and scope Submit manuscript

Abstract

The molecular mechanisms behind the rupture of intracranial aneurysms remain obscure. MiRNAs are key regulators of a wide array of biological processes altering protein synthesis by binding to target mRNAs. However, variations in miRNA levels in ruptured aneurysmal wall have not been completely examined. We hypothesized that altered miRNA signature in aneurysmal tissues could potentially provide insight into aneurysm pathophysiology. Using a high-throughput miRNA microarray screening approach, we compared the miRNA expression pattern in aneurysm tissues obtained during surgery from patients with aneurysmal subarachnoid hemorrhage (aSAH) with control tissues (GEO accession number GSE161870). We found that the expression of 70 miRNAs was altered. Expressions of the top 10 miRNA were validated, by qRT-PCR and results were correlated with clinical characteristics of aSAH patients. The level of 10 miRNAs (miR-24-3p, miR-26b-5p, miR-27b-3p, miR-125b-5p, miR-143-3p, miR-145-5p, miR-193a-3p, miR-199a-5p, miR-365a-3p/365b-3p, and miR-497-5p) was significantly decreased in patients compared to controls. Expression of miR-125b-5p, miR-143-3p and miR-199a-5p was significantly decreased in patients with poor prognosis and vasospasm. The target genes of few miRNAs were enriched in Transforming growth factor-beta (TGF-β) and Mitogen-activated protein kinases (MAPK) pathways. We found significant negative correlation between the miRNA and mRNA expression (TGF-β1, TGF-β2, SMAD family member 2 (SMAD2), SMAD family member 4 (SMAD4), MAPK1 and MAPK3) in aneurysm tissues. We suggest that miR-26b, miR-199a, miR-497and miR-365, could target multiple genes in TGF-β and MAPK signaling cascades to influence inflammatory processes, extracellular matrix and vascular smooth muscle cell degradation and apoptosis, and ultimately cause vessel wall degradation and rupture.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

Data Availability

The datasets generated during the current study are available from the corresponding author on reasonable request.

Abbreviations

aSAH:

Aneurysmal subarachnoid haemorrhage

ELISA:

Enzyme-linked immunosorbent assay

GCS:

Glasgow coma scale

GO:

Gene ontology

IA:

Intracranial aneurysm

KEGG:

Kyoto encyclopedia of genes and genomes

MAPK:

Mitogen-activated protein kinases

MiRNA:

Micro RNA

qRT-PCR:

Quantitative real time polymerase chain reaction

SMAD2:

SMAD family member 2

SMAD4:

SMAD family member 4

TGF-β:

Transforming growth factor-beta

WFNS:

World federation of neurological surgeons

References

Download references

Acknowledgements

The equipment used for this work was provided by the Vision Group on Science and Technology (VGST), Government of Karnataka, India (VGST/CESEM (2014–15)/GRD-311/2015–16). Ms. Supriya M is a recipient of CSIR-SRF fellowship.

Funding

None.

Author information

Authors and Affiliations

Authors

Contributions

CR, IDB, BDI, SD designed the study. SM and CR collated the data, carried out data analyses and produced the initial draft of the manuscript. KSR provided technical assistance for analysis and interpretation of data. All authors discussed the results, provided critical suggestions, and approved the manuscript.

Corresponding author

Correspondence to Rita Christopher.

Ethics declarations

Conflict of interest

The authors declare that they have no competing interests.

Ethical Approval

This study was approved by the Ethical Committee of National Institute of Mental Health and Neuro Sciences (No.NIMH/DO/ETHICS SUB-COMMITTEE 11th MEETING/2015).

Informed Consent

Written informed consent was obtained from all subjects or their legal guardians or to participate in the study.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (PDF 319 kb)

Supplementary file2 (PDF 188 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Supriya, M., Christopher, R., Devi, B.I. et al. Altered MicroRNA Expression in Intracranial Aneurysmal Tissues: Possible Role in TGF-β Signaling Pathway. Cell Mol Neurobiol 42, 2393–2405 (2022). https://doi.org/10.1007/s10571-021-01121-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10571-021-01121-3

Keywords

Navigation