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MicroRNA-136-5p regulates gemcitabine resistance in pancreatic cancer via down-regulating ZNF32

Y Xu1, Y Qin, J-X Cui

  • 1Department of Gastroenterology, Linyi Central Hospital, Linyi, China. 2973962097@qq.com.

European Review for Medical and Pharmacological Sciences
|November 6, 2020
PubMed
Abstract

Insights

MicroRNA-136-5p, a key regulator, reduces pancreatic cancer cell proliferation and metastasis by targeting ZNF32. This finding offers a new strategy to overcome gemcitabine resistance in pancreatic cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Pancreatic cancer (PCa) exhibits resistance to gemcitabine, a primary chemotherapeutic agent.
  • MicroRNAs play crucial roles in cancer progression and drug resistance.
  • Understanding the regulatory mechanisms of microRNAs in PCa is vital for developing effective treatments.

Purpose of the Study:

  • To investigate the role of microRNA-136-5p in gemcitabine resistance of pancreatic cancer.
  • To elucidate the interaction between microRNA-136-5p and ZNF32 in PCa.
  • To provide a theoretical basis for targeted therapy in PCa.

Main Methods:

  • Analysis of microRNA-136-5p and ZNF32 expression in PCa tissues and cell lines using qRT-PCR.
  • Construction of microRNA-136-5p overexpression models in gemcitabine-resistant PCa cell lines.
  • Assessment of cell proliferation, migration, and invasion using CCK-8, Transwell, and wound healing assays.
  • Luciferase reporter assays and recovery experiments to confirm the interaction and mechanism.

Main Results:

  • MicroRNA-136-5p was significantly downregulated in PCa tissues and cell lines.
  • Overexpression of microRNA-136-5p suppressed proliferation and migration of gemcitabine-resistant PCa cells.
  • MicroRNA-136-5p directly targets ZNF32, with inverse correlation in PCa tissues.
  • ZNF32 overexpression counteracted the inhibitory effects of microRNA-136-5p on PCa cell malignancy.

Conclusions:

  • MicroRNA-136-5p inhibits pancreatic cancer cell proliferation and metastasis by regulating ZNF32.
  • This regulation mechanism alleviates gemcitabine resistance in pancreatic cancer.
  • MicroRNA-136-5p-ZNF32 axis represents a potential therapeutic target for overcoming gemcitabine resistance in PCa.

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