Prognostic value of LIPC in non-small cell lung carcinoma

Lorenzo Galluzzi, Aicha Goubar, André Olaussen Ken André Olaussen, Ilio Vitale, Laura Senovilla, Judith Michels, Robin Angélique Robin, Nicolas Dorvault, Benjamin Besse, Pierre Validire, Pierre Fouret, Carmen Behrens, Ignacio Ivan Wistuba, Jean Charles Soria, Guido Kroemer

Research output: Contribution to journalArticlepeer-review

Abstract

Non-small cell lung carcinoma (NSCLC) is the most common form of lung cancer and is associated with a high mortality rate worldwide. The majority of individuals bearing NSCLC are treated with surgery plus adjuvant cisplatin, an initially effective therapeutic regimen that, however, is unable to prevent relapse within 5 years after tumor resection in an elevated proportion of patients. The factors that predict the clinical course of NSCLC and its sensitivity to therapy remain largely obscure. One notable exception is provided by pyridoxal kinase (PDXK), the enzyme that generates the bioactive form of vitamin B6. PDXK has recently been shown to be required for optimal cisplatin responses in vitro and in vivo and to constitute a bona fide prognostic marker in the NSCLC setting. Together with PDXK, 84 additional factors were identified that influence the response of NSCLC cells to cisplatin in vitro, including the hepatic lipase LIPC. Here, we report that the intratumoral levels of LIPC, as assessed by immunohistochemistry in two independent cohorts of NSCLC patients, positively correlate with disease outcome. In one out of two cohorts studied, the overall survival of NSCLC patients bearing LIPChigh lesions was unaffected, if not slightly worsened, by cisplatin-based adjuvant therapy. Conversely, the overall survival of patients with LIPClow lesions was prolonged by post-operative cisplatin. Pending validation in appropriate clinical series, these results suggest that LIPClow NSCLC patients would be those who mainly benefit from adjuvant cisplatin therapy. Thus, the expression levels of LIPC appear to have an independent prognostic value (and perhaps a predictive potential) in the setting of NSCLC. If these findings were confirmed by additional studies, LIPC expression levels might allow not only for NSCLC patient stratification, but also for the implementation of personalized therapeutic approaches.

Original languageEnglish
Pages (from-to)647-654
Number of pages8
JournalCell Cycle
Volume12
Issue number4
DOIs
Publication statusPublished - Feb 15 2013

Keywords

  • Anaplastic lymphoma kinase
  • Apoptosis
  • BCL-X
  • PDXP
  • Personalized medicine
  • Pyridoxine

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology
  • Developmental Biology

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