Targeting DYRK1B suppresses the proliferation and migration of liposarcoma cells

Hua Chen1,2, Jacson Shen2, Edwin Choy2

  • 1Department of Emergency Surgery, ShenZhen People's Hospital, 2nd Clinical Medical College of Jinan University, Shenzhen, Guangdong Province, China, 518020.

Oncotarget
|March 24, 2018
PubMed

Insights

Dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1B (DYRK1B) drives liposarcoma growth. Inhibiting DYRK1B with AZ191 or doxorubicin shows therapeutic potential for this soft tissue sarcoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Liposarcoma, a prevalent soft tissue sarcoma, shows limited response to conventional chemotherapy.
  • Serine/threonine-protein kinase dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1B (DYRK1B) is implicated in various cancer cell growth and survival.
  • The specific role of DYRK1B in liposarcoma pathogenesis and progression is currently undetermined.

Purpose of the Study:

  • To investigate the functional significance of DYRK1B in liposarcoma.
  • To evaluate the therapeutic potential of targeting DYRK1B in liposarcoma models.

Main Methods:

  • Tissue microarray and immunohistochemistry were employed to assess DYRK1B expression levels in liposarcoma tissues.
  • RNA interference-mediated knockdown and the DYRK1B kinase inhibitor AZ191 were used to study DYRK1B inhibition.
  • Cellular assays evaluated the effects on liposarcoma cell proliferation, motility, and apoptosis; combination therapy with doxorubicin was also assessed.

Main Results:

  • Elevated DYRK1B expression levels significantly correlated with poorer prognosis in liposarcoma patients.
  • Inhibition of DYRK1B, via RNA interference or AZ191 treatment, markedly suppressed liposarcoma cell proliferation and motility, while inducing apoptosis.
  • The combination of AZ191 and doxorubicin exhibited enhanced anti-cancer efficacy against liposarcoma cells compared to monotherapy.

Conclusions:

  • DYRK1B plays a critical role in promoting liposarcoma cell growth and survival.
  • Targeting DYRK1B represents a promising novel therapeutic strategy for liposarcoma treatment.
  • Combined inhibition of DYRK1B and conventional chemotherapy may offer improved clinical outcomes for liposarcoma patients.

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