DAB2IP regulates the chemoresistance to pirarubicin and tumor recurrence of non-muscle invasive bladder cancer through STAT3/Twist1/P-glycoprotein signaling

Cell Signal. 2015 Dec;27(12):2515-23. doi: 10.1016/j.cellsig.2015.09.014. Epub 2015 Sep 26.

Abstract

There is a high frequency of tumor recurrence in non-muscle invasive bladder cancer (NMIBC) after transurethral resection and postoperative intravesical chemotherapy, however, the molecular mechanisms leading to the chemoresistance and tumor re-growth remain largely unknown. In this study, we observed a significant decrease of DAB2IP expression in high-grade and recurrent NMIBC specimens, which was negatively correlated with Twist1 expression and predicted a lower recurrence-free survival of patients. Mechanistically, DAB2IP could inhibit the phosphorylation and transactivation of STAT3, and then subsequently suppress the expression of Twist1 and its target gene P-glycoprotein, both of which were crucial for the pirarubicin chemoresistance and tumor re-growth of bladder cancer cells. Overall, this study reveals a new promising biomarker modulating the chemoresistance and tumor recurrence of NMIBC after bladder preservation surgery.

Keywords: Bladder cancer; DAB2IP; P-glycoprotein; Pirarubicin; Tumor recurrence; Twist1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ATP Binding Cassette Transporter, Subfamily B, Member 1 / metabolism
  • Animals
  • Antineoplastic Agents / pharmacology*
  • Antineoplastic Agents / therapeutic use
  • Cell Line, Tumor
  • Cell Survival / drug effects
  • Down-Regulation
  • Doxorubicin / analogs & derivatives*
  • Doxorubicin / pharmacology
  • Doxorubicin / therapeutic use
  • Drug Resistance, Neoplasm
  • Female
  • Humans
  • Kaplan-Meier Estimate
  • Mice, Inbred BALB C
  • Mice, Nude
  • Neoplasm Invasiveness
  • Neoplasm Recurrence, Local / metabolism*
  • Neoplasm Recurrence, Local / mortality
  • Neoplasm Recurrence, Local / prevention & control
  • Nuclear Proteins / metabolism
  • STAT3 Transcription Factor / metabolism
  • Signal Transduction
  • Twist-Related Protein 1 / metabolism
  • Urinary Bladder Neoplasms / drug therapy
  • Urinary Bladder Neoplasms / epidemiology*
  • Urinary Bladder Neoplasms / metabolism*
  • Urinary Bladder Neoplasms / mortality
  • Urinary Bladder Neoplasms / pathology
  • Urothelium / metabolism
  • Urothelium / pathology
  • Xenograft Model Antitumor Assays
  • ras GTPase-Activating Proteins / physiology*

Substances

  • ATP Binding Cassette Transporter, Subfamily B, Member 1
  • Antineoplastic Agents
  • DAB2IP protein, human
  • Nuclear Proteins
  • STAT3 Transcription Factor
  • STAT3 protein, human
  • TWIST1 protein, human
  • Twist-Related Protein 1
  • ras GTPase-Activating Proteins
  • Doxorubicin
  • pirarubicin