Circulating levels of TNF-related apoptosis inducing-ligand are decreased in patients with large adult-type granulosa cell tumors—implications for therapeutic potential

Anniina Färkkilä, Giorgio Zauli, Ulla Maija Haltia, Marjut Pihlajoki, Leila Unkila-Kallio, Paola Secchiero, Markku Heikinheimo

Research output: Contribution to journalArticle

Abstract

Targeted treatments are needed for advanced adult-type granulosa cell tumors (AGCTs). We set out to assess tumor tissue and circulating levels of TNF-related apoptosis-inducing ligand (TRAIL), a promising anti-cancer cytokine, in patients affected by AGCT. We analyzed tissue expression of TRAIL in 127 AGCTs using immunohistochemistry or RT-PCR. Soluble TRAIL was measured by means of ELISA from 141 AGCT patient serum samples, as well as the conditioned media of 15 AGCT patient-derived primary cell cultures, and the KGN cell line. Tissue and serum TRAIL levels were analyzed in relationship with clinical parameters, and serum estradiol, FSH, and LH levels. We found that AGCT samples expressed TRAIL mRNA and protein at levels comparable to normal granulosa cells. AGCT cells did not release soluble TRAIL. TRAIL protein levels were decreased in tumors over 10 cm in diameter (p = 0.04). Consistently, circulating TRAIL levels correlated negatively to tumor dimension (p = 0.01). Circulating TRAIL levels negatively associated with serum estradiol levels. In multiple regression analysis, tumor size was an independent factor contributing to the decreased levels of soluble TRAIL in AGCT patients. AGCTs associate with significantly decreased tumor tissue and serum TRAIL levels in patients with a large tumor mass. These findings encourage further study of agonistic TRAIL treatments in patients with advanced or recurrent AGCT.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalTumor Biology
DOIs
Publication statusAccepted/In press - Apr 11 2016

Keywords

  • Estradiol
  • FSH
  • GATA4
  • Granulosa cell tumor
  • LH
  • Ovarian cancer
  • Targeted treatment
  • TRAIL

ASJC Scopus subject areas

  • Cancer Research

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