Molecular Neurobiology

, Volume 56, Issue 10, pp 6976–6985 | Cite as

Novel miRNA PC-5P-12969 in Ischemic Stroke

  • Murali Vijayan
  • Faisal F. Alamri
  • Abdullah Al Shoyaib
  • Vardan T. Karamyan
  • P. Hemachandra ReddyEmail author


Circulating microRNAs (miRNAs) have been used effectively as peripheral biomarkers and mechanistic targets for human diseases such as stroke, Alzheimer’s, and cancer. The purpose of our study is to determine noninvasive, blood-based early detectable biomarkers for ischemic stroke (IS). Based on our previous global miRNA sequencing study, four miRNAs were previously unreported (novel) in IS condition. Among these, miRNA PC-5P-12969 was exclusively expressed in the IS condition; otherwise, it was not expressed in normal condition, and therefore, we focused on miRNA PC-5P-12969 for further studies. In the present study, we investigated novel miRNA PC-5P-12969 for its expression levels using quantitative real-time PCR assay (qRT-PCR) in an in vitro, oxygen, and glucose deprivation/reoxygenation (OGD/R)-treated mouse primary hippocampal neuronal cells (HT22) and in an in vivo using a photothrombotic stroke model. In an in vitro study of stroke-induced HT22 cells, we found a two fold increase of PC-5P-12969 expression levels, in agreement with our original global miRNA study. In the cerebral cortex of photothrombotic stroke mice, we found significantly upregulated levels of PC-5P-12969 in 4 hours and 1 day post-stroke relative to the control mice. However, we did not find any change in the expression of PC-5P-12969 in the cerebellum (unaffected in IS) of both stroke and control mice. Based on findings from this study, together with our earlier original global microRNA study results, we conclude that PC-5P-12969 is a potential candidate of the peripheral marker and also a drug target for IS. This is the first study validating that the miRNA PC-5P-12969, might be a potential biomarker for IS.


Ischemic stroke Novel miRNA Biomarker HT22 Infarct volume Photothrombotic stroke model 



We thank Dr. David Schubert (Salk Institute for Biological Studies) for providing the HT22 cells for this study as a gift.


The research presented in this article was supported by the National Institute of Health grants AG042178, AG47812, and NS105473 and grants from the Garrison Family Foundation and the CH Foundation (PHR).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no competing interests.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Internal MedicineTexas Tech University Health Sciences CenterLubbockUSA
  2. 2.Department of Pharmaceutical Sciences, School of PharmacyTexas Tech University Health Sciences CenterAmarilloUSA
  3. 3.Center for Blood Brain Barrier Research, School of PharmacyTexas Tech University Health Sciences CenterAmarilloUSA
  4. 4.Garrison Institute on AgingTexas Tech University Health Sciences CenterLubbockUSA
  5. 5.Garrison Institute on Aging, South West CampusTexas Tech University Health Sciences CenterLubbockUSA
  6. 6.Cell Biology & Biochemistry DepartmentTexas Tech University Health Sciences CenterLubbockUSA
  7. 7.Pharmacology & Neuroscience DepartmentTexas Tech University Health Sciences CenterLubbockUSA
  8. 8.Neurology DepartmentTexas Tech University Health Sciences CenterLubbockUSA
  9. 9.Speech, Language and Hearing Sciences DepartmentTexas Tech University Health Sciences CenterLubbockUSA
  10. 10.Department of Public Health, Graduate School of Biomedical SciencesLubbockUSA

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