Therapeutic Targeting of Nuclear Export Inhibition in Lung Cancer

Arjun Gupta, Jessica M. Saltarski, Michael A. White, Pier P. Scaglioni, David E. Gerber

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Intracellular compartmentalization and trafficking of molecules plays a critical role in complex and essential cellular processes. In lung cancer and other malignancies, aberrant nucleocytoplasmic transport of tumor suppressor proteins and cell cycle regulators results in tumorigenesis and inactivation of apoptosis. Pharmacologic agents targeting this process, termed selective inhibitors of nuclear export (SINE), have demonstrated antitumor efficacy in preclinical models and human clinical trials. Exportin-1 (XPO1), which serves as the sole exporter of several tumor suppressor proteins and cell cycle regulators, including retinoblastoma, adenomatous polyposis coli, p53, p73, p21, p27, forkhead box O, signal transducer and activator of transcription 3, inhibitor of κB, topoisomerase II, and protease activated receptor 4—is the principal focus of development of SINE. The most extensively studied of the SINE to date, the exportin-1 inhibitor selinexor (KPT-330 [Karyopharm Therapeutics, Inc., Newton Centre, MA]), has demonstrated single-agent anticancer activity and synergistic effects in combination regimens against multiple cancer types, with principal toxicities of low-grade cytopenias and gastrointestinal effects. SINE may have particular relevance in KRAS-driven tumors, for which this treatment strategy demonstrates significant synthetic lethality. A multicenter phase 1/2 clinical trial of selinexor in previously treated advanced KRAS-mutant NSCLC is under way.

Original languageEnglish (US)
Pages (from-to)1446-1450
Number of pages5
JournalJournal of Thoracic Oncology
Volume12
Issue number9
DOIs
StatePublished - Sep 1 2017

Keywords

  • Adenocarcinoma
  • Exportin-1
  • KRAS
  • Pathway
  • Selinexor
  • Targeted therapy
  • XPO1

ASJC Scopus subject areas

  • Oncology
  • Pulmonary and Respiratory Medicine

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