Postoperative prognosis prediction of pancreatic cancer with seven microRNAs

Related Experiment Video

Updated: Apr 14, 2026

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
09:45

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells

Published on: May 21, 2019

9.1K

Kwang Hyuck Lee1, Jong Kyun Lee, Dong Wook Choi

  • 1From the *Department of Medicine, †Department of Surgery, ‡Department of Pathology, §Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; and ∥Department of Biostatistics and Bioinformatics, Duke University, NC.

Pancreas
|April 24, 2015
PubMed
Abstract

Insights

Seven microRNAs identified in archived pancreatic cancer tissues predict patient survival. This discovery offers a new model for assessing postoperative prognosis in pancreatic cancer patients using microRNA expression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genomics

Background:

  • Pancreatic cancer has a poor prognosis, necessitating novel biomarkers for predicting patient outcomes.
  • MicroRNAs (miRNAs) are implicated in cancer development and progression, but their role in pancreatic cancer prognosis requires further elucidation.

Purpose of the Study:

  • To identify microRNAs associated with the postoperative prognosis of pancreatic cancer.
  • To develop a predictive model for pancreatic cancer survival using miRNA expression profiles from archival surgical specimens.

Main Methods:

  • Retrospective analysis of miRNA expression in formalin-fixed paraffin-embedded (FFPE) pancreatic cancer tissues.
  • Validation of miRNA expression correlation between fresh-frozen and FFPE samples.
  • Application of the NanoString nCounter system for miRNA profiling in 221 patients.

Main Results:

  • High correlation (r > 0.91) of miRNA expression between fresh-frozen and FFPE samples.
  • Identification of seven specific miRNAs (hsa-miR-99a, hsa-miR-150, hsa-miR-194, hsa-miR-375, hsa-miR-664, hsa-miR-342-3p, and hsa-miR-487b) significantly associated with overall survival (P < 0.01).
  • The prognostic significance of these miRNAs remained consistent after adjusting for clinical parameters.

Conclusions:

  • A novel prediction model for pancreatic cancer postoperative prognosis was established using a signature of seven miRNAs from FFPE tissues.
  • These findings highlight the utility of archived FFPE samples for miRNA-based prognostic studies in pancreatic cancer.
  • The identified miRNAs and detection methods offer new avenues for research in surgically resected pancreatic cancer.

More Related Videos

Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer08:12

Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer

Published on: March 14, 2019

6.1K
Isolation of Proximal Fluids to Investigate the Tumor Microenvironment of Pancreatic Adenocarcinoma05:44

Isolation of Proximal Fluids to Investigate the Tumor Microenvironment of Pancreatic Adenocarcinoma

Published on: November 5, 2020

5.4K

Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
4.3K
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
24.8K