Circulating miR-146a expression as a non-invasive predictive biomarker for acute lymphoblastic leukemia

Area of Science:

• Oncology
• Molecular Biology
• Biomarker Discovery

Background:

• Dysregulation of non-coding microRNAs is implicated in cancer development and progression.
• MicroRNAs are emerging as potential diagnostic and prognostic markers for various malignancies.

Purpose of the Study:

• To evaluate the diagnostic and prognostic utility of plasma miR-146a as a non-invasive biomarker for acute lymphoblastic leukemia (ALL).

Main Methods:

• Plasma samples from 110 individuals (66 ALL patients, 24 healthy controls, 20 follow-up cases) were analyzed.
• RNA isolation, reverse transcription, and real-time quantitative PCR were performed to assess miR-146a concentrations.
• Fold-change expression was calculated using the 2^-ΔΔCt method and correlated with clinicopathological factors.

Main Results:

• Overexpression of plasma miR-146a was observed in both pediatric and adult ALL patients compared to healthy controls (P < 0.0001).
• miR-146a expression was independent of age, gender, and clinical/hematological features.
• A significant decrease in plasma miR-146a levels was noted after chemotherapy (P < 0.001).

Conclusions:

• Plasma miR-146a can serve as a non-invasive diagnostic and prognostic marker for acute lymphoblastic leukemia in both pediatric and adult populations.
• Further research into predicted miR-146a targets may offer novel therapeutic strategies for ALL.