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Updated: Oct 19, 2025
Exosomal miRNA Analysis in Non-small Cell Lung Cancer NSCLC Patients' Plasma Through qPCR: A Feasible Liquid Biopsy Tool
Published on: May 27, 2016
The plasma exosomal miR-1180-3p serves as a novel potential diagnostic marker for cutaneous melanoma
Yeye Guo1,2,3, Xu Zhang1,2,3, Linconghua Wang4
1Department of Dermatology, Xiangya Hospital, Central South University, Xiangya Road #87, Changsha, 410008, China.
Background:
Exosomes are a promising tool in disease detection because they are noninvasive, cost-effective, sensitive and stable in body fluids. MicroRNAs (miRNAs) are the main exosomal component and participate in tumor development. However, the exosomal miRNA profile among Asian melanoma patients remains unclear.
Methods:
Exosomal miRNAs from the plasma of melanoma patients (n = 20) and healthy individuals (n = 20) were isolated and subjected to small RNA sequencing. Real-time PCR was performed to identify the differential miRNAs and to determine the diagnostic efficiency. Proliferation, scratch and Transwell assays were performed to detect the biological behavior of melanoma cells.
Results:
Exosomal miRNA profiling revealed decreased miR-1180-3p expression as a potential diagnostic marker of melanoma. The validation group of melanoma patients (n = 28) and controls (n = 28) confirmed the diagnostic efficiency of miR-1180-3p. The level of miR-1180-3p in melanoma cells was lower than that in melanocytes. Accordingly, the level of miR-1180-3p was negatively associated with the proliferation, migration and invasion of melanoma cells. Functional analysis and target gene prediction found that ST3GAL4 was a potential target and highly expressed in melanoma tissues and was negatively regulated by miR-1180-3p. Knockdown of ST3GAL4 hindered the malignant phenotype of melanoma cells.
Conclusions:
This study indicates that reduced exosomal miR-1180-3p in melanoma patient plasma is a promising diagnostic marker and provides novel insight into melanoma development.
Insights
Reduced exosomal microRNA-1180-3p in Asian melanoma patients shows diagnostic potential. This finding offers new insights into melanoma development and progression.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Exosomes are valuable for noninvasive disease detection due to their stability in body fluids.
- MicroRNAs (miRNAs) within exosomes play a role in tumor development.
- The specific exosomal miRNA profile in Asian melanoma patients requires further investigation.
Purpose of the Study:
- To investigate the exosomal miRNA profile in Asian melanoma patients.
- To identify potential exosomal miRNA biomarkers for melanoma diagnosis.
- To explore the functional role of identified miRNAs in melanoma cell behavior.
Main Methods:
- Plasma exosomal miRNAs were isolated from melanoma patients and healthy controls.
- Small RNA sequencing and real-time PCR were used to profile and quantify miRNAs.
- Cellular assays (proliferation, migration, invasion) were conducted to assess biological behavior.
Main Results:
- Decreased exosomal miR-1180-3p expression was identified as a potential diagnostic marker for melanoma.
- miR-1180-3p levels were lower in melanoma cells compared to melanocytes and negatively correlated with melanoma cell proliferation, migration, and invasion.
- ST3GAL4 was identified as a potential target gene negatively regulated by miR-1180-3p, and its knockdown hindered melanoma cell malignancy.
Conclusions:
- Reduced exosomal miR-1180-3p in plasma is a promising diagnostic marker for melanoma.
- This study provides novel insights into the role of exosomal miR-1180-3p in melanoma pathogenesis.
- Exosomal miR-1180-3p may serve as a therapeutic target for melanoma treatment.
