Fibulin-3 is associated with tumour progression and a poor prognosis in nasopharyngeal carcinomas and inhibits cell migration and invasion via suppressed AKT activity

Chung Feng Hwang, Chih Yen Chien, Shun Cheng Huang, Yu Fang Yin, Chao Cheng Huang, Fu Min Fang, Hsin Ting Tsai, Li Jen Su, Chang Han Chen

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

Nasopharyngeal carcinoma (NPC) is known for its highly metastatic character. Recent advances in diagnosis and treatment have not improved the high mortality rate that is attributable to early metastasis. Although several biomarkers correlate with metastasis and prognosis, the molecular mechanisms of NPC development and progression remain unclear. We demonstrate comprehensively that fibulin-3 is down-regulated in NPC. Loss of fibulin-3 expression is significantly correlated with advanced tumour and lymph node-metastasis stages, and indicates a poor 5-year survival rate. Functionally, fibulin-3 has the ability to suppress cell migration and invasion in NPC cancer cells by decreasing the activity of phospho-AKT. Conversely, its depletion by fibulin-3-mediated siRNAs may elevate phospho-AKT activity and significantly enhance the ability of NPC cancer cells to migrate and invade. Consistent with this negative association between fibulin-3 and phospho-AKT, their expression levels are inversely correlated in NPC specimens by immunohistochemical analysis. Thus, lower fibulin-3 expression is an important indicator of poor survival. It may also contribute to the development of new therapeutic strategies to block the PI3K/AKT pathway in NPC cancer cells.

Original languageEnglish
Pages (from-to)367-379
Number of pages13
JournalJournal of Pathology
Volume222
Issue number4
DOIs
StatePublished - Dec 2010

Keywords

  • Fibulin-3
  • Invasion
  • Migration
  • Nasopharyngeal carcinoma
  • P-AKT

Fingerprint

Dive into the research topics of 'Fibulin-3 is associated with tumour progression and a poor prognosis in nasopharyngeal carcinomas and inhibits cell migration and invasion via suppressed AKT activity'. Together they form a unique fingerprint.

Cite this