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Updated: Jul 2, 2026

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
Midkine mRNA is overexpressed in pancreatic cancer
Seiji Ohhashi1, Kenoki Ohuchida, Kazuhiro Mizumoto
1Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, 812-8582, Japan.
Purpose:
Midkine (MK) has been reported to be a possible molecular marker for the diagnosis of pancreatic cancer. We investigated the feasibility of quantitative analysis of MK mRNA by quantitative real-time RT-PCR (qRT-PCR) as a promising tool for the diagnosis of pancreatic cancer.
Results:
We found that pancreatic cancer tissues expressed significantly higher levels of MK mRNA than intraductal pancreatic mucinous neoplasm (IPMN) and non-neoplastic pancreatic tissues (P < 0.05); in contrast, we did not find any differences in MK mRNA expression between IPMN and non-neoplastic pancreatic tissues. Additionally, we observed that poorly differentiated carcinoma samples expressed higher levels of MK mRNA than well-differentiated carcinoma samples, although a significant difference was not observed.
Conclusions:
The present data suggests that quantitative analysis of MK mRNA provides an objective and sensitive evaluation and may be a promising modality for the diagnosis of pancreatic cancer and the prediction of its prognosis.
Insights
Quantitative analysis of Midkine (MK) mRNA shows higher expression in pancreatic cancer tissues. This suggests MK mRNA is a promising biomarker for diagnosing pancreatic cancer and predicting its prognosis.
Area of Science:
- Oncology
- Molecular Biology
- Biomarker Discovery
Background:
- Midkine (MK) is a potential molecular marker for pancreatic cancer diagnosis.
- Quantitative analysis of MK mRNA is being explored as a diagnostic tool.
Purpose of the Study:
- To investigate the feasibility of quantitative analysis of Midkine (MK) mRNA using quantitative real-time RT-PCR (qRT-PCR).
- To evaluate MK mRNA as a promising tool for pancreatic cancer diagnosis.
Main Methods:
- Quantitative real-time RT-PCR (qRT-PCR) was used for MK mRNA analysis.
- MK mRNA expression levels were compared between pancreatic cancer tissues, intraductal pancreatic mucinous neoplasm (IPMN), and non-neoplastic pancreatic tissues.
Main Results:
- Pancreatic cancer tissues exhibited significantly higher MK mRNA levels compared to IPMN and non-neoplastic tissues (P < 0.05).
- No significant difference in MK mRNA expression was found between IPMN and non-neoplastic tissues.
- Higher MK mRNA levels were observed in poorly differentiated carcinomas versus well-differentiated carcinomas, though not statistically significant.
Conclusions:
- Quantitative MK mRNA analysis offers an objective and sensitive method for pancreatic cancer diagnosis.
- MK mRNA may serve as a promising biomarker for pancreatic cancer diagnosis and prognosis prediction.
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