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Updated: Apr 28, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
Published on: October 7, 2025
MicroRNAs in brain metastases: potential role as diagnostics and therapeutics
Samer Alsidawi1, Ehsan Malek2, James J Driscoll3
1Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA. alsidasr@ucmail.uc.edu.
Abstract:
Brain metastases remain a daunting adversary that negatively impact patient survival. Metastatic brain tumors affect up to 45% of all cancer patients with systemic cancer and account for ~20% of all cancer-related deaths. A complex network of non-coding RNA molecules, microRNAs (miRNAs), regulate tumor metastasis. The brain micro-environment modulates metastatic tumor growth; however, defining the precise genetic events that promote metastasis in the brain niche represents an important, unresolved problem. Understanding these events will reveal disease-based targets and offer effective strategies to treat brain metastases. Effective therapeutic strategies based upon the biology of brain metastases represent an urgent, unmet need with immediate potential for clinical impact. Studies have demonstrated the ability of miRNAs to distinguish normal from cancerous cells, primary from secondary brain tumors, and correctly categorize metastatic brain tumor tissue of origin based solely on miRNA profiles. Interestingly, manipulation of miRNAs has proven effective in cancer treatment. With the promise of reduced toxicity, increased efficacy and individually directed personalized anti-cancer therapy, using miRNA in the treatment of metastatic brain tumors may prove very useful and improve patient outcome. In this review, we focus on the potential of miRNAs as diagnostic and therapeutic targets for the treatment of metastatic brain lesions.
Insights
MicroRNAs (miRNAs) are key regulators of brain metastasis. This review explores their potential as diagnostic and therapeutic targets for treating metastatic brain lesions, offering hope for improved patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Brain metastases significantly impact cancer patient survival, accounting for a substantial portion of cancer-related deaths.
- The brain micro-environment influences metastatic tumor growth, but the specific genetic events driving this process remain unclear.
- Non-coding RNAs, particularly microRNAs (miRNAs), play a crucial role in regulating tumor metastasis.
Purpose of the Study:
- To review the potential of microRNAs (miRNAs) as diagnostic and therapeutic targets for metastatic brain lesions.
- To highlight the role of miRNAs in distinguishing between normal and cancerous cells, and in categorizing metastatic brain tumors.
- To discuss the promise of miRNA-based therapies for improving patient outcomes in brain metastasis treatment.
Main Methods:
- Literature review focusing on the role of miRNAs in brain metastasis.
- Analysis of studies demonstrating miRNA profiling for cancer cell and tumor classification.
- Examination of research on miRNA manipulation for cancer treatment efficacy.
Main Results:
- miRNA profiles can accurately distinguish normal from cancerous cells and classify metastatic brain tumors by origin.
- Manipulation of miRNAs has shown effectiveness in preclinical cancer treatment models.
- miRNAs hold promise for developing targeted, personalized anti-cancer therapies with reduced toxicity.
Conclusions:
- MicroRNAs (miRNAs) are critical regulators in the development and progression of brain metastases.
- miRNAs offer significant potential as biomarkers for diagnosing and classifying brain metastases.
- Targeting miRNAs presents a promising therapeutic strategy to improve treatment efficacy and patient outcomes for brain metastases.
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MicroRNAs
MicroRNAs
lncRNA - Long Non-coding RNAs

