Abstract
Background
Micro-RNA (miRs) targeting kinases and phosphatases regulate the hyper-phosphorylation of tau protein, which is a characteristic feature of Chronic Traumatic Encephalopathy (CTE).
Primary objective.
Identification of lead dysregulated miR expressed in CTE, and other similar tauopathies.
Methods
A search strategy was devised using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to mine into multiple indexing databases such as Web of Science, Google Scholar, and PubMed spanning from 2005 to June 2022. Seven articles were screened out of 34,221 publications based on inclusion criteria and were categorized into two groups i.e., (1) CTE and its risk factors and (2) Age-related neurodegenerative disorders.
Results
Statistical analysis [RevMan 5.4.1] results showed that the overall risk ratio (RR) of the first group is significant (RR = 0.62, 95% CI = [0.38, 1.00], z = 1.95, p = 0.05) whereas, the second group favours the control population (RR = 1.64, 95% CI = [0.85, 3.16], z = 1.14, p = 0.14).
Conclusion
We observed that among all other dysregulated miRs, miR-181c-5p is significantly overexpressed in Alzhimers disease (AD) and CTE. Further, we found that miR-210-3p is also upregulated notably in all groups. In sum, we conclude that these miRs can be considered as potential target and biomarker in the diagnosis and treatment of various tauopathies.
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Data availability
The detailed methodology and dataset generated during the meta-analysis are available from the corresponding author upon reasonable request.
Code availability
Not applicable.
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Funding
The study was supported by DST-INSPIRE project (DST/INSPIRE/04/2019/002618, UGC-start-up grant (F.30–547/2021), UGC-JRF (Ref. No.: 210510135543) and Central University of Rajasthan.
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Harshita Tak: Idea generation, hypothesis formulation, methodology development and study design creation, data collection and scrutiny, statistical analysis, initial draft writing, and manuscript finalization. Arpan Chattopadhyay: Review and Editing. Dr Hemanth Naick B: Developing the idea, designing the hypothesis, securing funds, editing and revising. All persons who meet authorship criteria are listed as authors and all authors certify that they have approved the version of the manuscript to be published and take responsibility for the content of the manuscript.
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Key points
• Treatment for chronic traumatic encephalopathy is limited to symptom management, and targeting tau hyper-phosphorylation and acetylation is a promising area of research.
• In the present study, it was observed that miR-181c-5p and miR-210-3p, which were upregulated, showed prominent expression levels in brain tissue, indicating a possible link between these specific miRNAs and tau protein translation.
• An analysis of multiple studies indicates that MiR-16 5p is often, raised in cases of CTE and concussion. On the other hand, miR 181c 5p and miR 210 3p are prevalent in individuals with CTE, ALS, AD, and MCI.
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Tak, H., Chattopadhyay, A. & Banavath, H.N. A meta-analysis of differentially expressed circulatory micro-RNAs in chronic traumatic encephalopathy and other tauopathies: A significant role of miR-181c-5p. Ir J Med Sci 193, 999–1007 (2024). https://doi.org/10.1007/s11845-023-03469-5
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DOI: https://doi.org/10.1007/s11845-023-03469-5