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Extracellular vesicle-encapsulated microRNA-761 enhances pazopanib resistance in synovial sarcoma

Kumiko Shiozawa1, Ji Shuting1, Yusuke Yoshioka2

  • 1Division of Rare Cancer Research, National Cancer Center Research Institute, Tokyo, Japan, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.

Biochemical and Biophysical Research Communications
|December 2, 2017
PubMed

Insights

Secreted microRNAs (miRNAs) in extracellular vesicles (EVs) can drive pazopanib resistance in synovial sarcoma. Researchers identified miR-761 as a potential biomarker and therapeutic target for overcoming drug resistance in sarcoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Drug resistance in tumor cells contributes to cancer relapse and metastasis.
  • Secreted microRNAs (miRNAs) within extracellular vesicles (EVs) mediate intercellular communication.
  • Understanding resistance mechanisms is crucial for developing effective cancer therapies.

Purpose of the Study:

  • To investigate the role of secreted miRNAs in pazopanib resistance in synovial sarcoma.
  • To identify potential miRNA biomarkers associated with pazopanib resistance.
  • To elucidate the regulatory network involving secreted miRNAs in synovial sarcoma.

Main Methods:

  • Comprehensive analysis of secreted miRNA abundance using microarray technology.
  • Comparison of miRNA profiles in pazopanib-treated and untreated synovial sarcoma cell lines.
  • Bioinformatic prediction of miRNA targets.

Main Results:

  • miR-761 was identified as a potential biomarker for pazopanib resistance in synovial sarcoma.
  • miR-761 is secreted via EVs from synovial sarcoma cells.
  • miR-761 putatively targets TRIP6, LMNA, and SIRT3, proteins linked to chemotherapeutic resistance.

Conclusions:

  • miR-761 plays a significant role in pazopanib resistance in synovial sarcoma.
  • EV-secreted miR-761 represents a potential therapeutic target for overcoming resistance.
  • Further research into miR-761 may lead to novel sarcoma treatment strategies.
Keywords:
Extracellular vesicleMiR-761Pazopanib-resistanceSynovial sarcoma

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