miR-135b: A Potential Biomarker for Pathological Diagnosis and Biological Therapy

Area of Science:

• Molecular Biology
• Oncology
• Biochemistry

Background:

• MicroRNAs (miRNAs) are endogenous non-coding RNAs regulating gene expression post-transcriptionally.
• Aberrant miRNA expression is a hallmark of cancer, offering potential as biomarkers.
• microRNA-135b-5p (miR-135b) is implicated in various diseases, exhibiting context-dependent roles in tumorigenesis.

Purpose of the Study:

• To review current research on miR-135b in oncology.
• To elucidate the biogenesis, expression patterns, and regulatory functions of miR-135b in tumors.
• To explore the clinical utility of miR-135b as a biomarker for cancer diagnosis and prognosis.

Main Methods:

• Literature review of studies on miR-135b and cancer.
• Analysis of miR-135b's role in cancer hallmarks: metabolism, proliferation, apoptosis, invasion, fibrosis, angiogenesis, immunomodulation, and drug resistance.
• Identification of miR-135b targets and signaling pathways involved in tumor progression.

Main Results:

• miR-135b exhibits context-specific tumor-suppressive and carcinogenic activities.
• It regulates critical cancer development pathways including proliferation, apoptosis, and angiogenesis.
• miR-135b expression levels correlate with tumor diagnosis and prognosis.

Conclusions:

• miR-135b is a significant regulator of multiple cancer hallmarks.
• Its differential expression and functional duality underscore its complex role in tumorigenesis.
• miR-135b holds considerable potential as a clinical biomarker for cancer management.