Melatonin suppresses lung cancer metastasis by inhibition of epithelial-mesenchymal transition through targeting to Twist

Chia Chia Chao, Po Chun Chen, Pei Chen Chiou, Chin Jung Hsu, Po I. Liu, Yi Chen Yang, Russel J Reiter, Shun Fa Yang, Chih Hsin Tang

Research output: Contribution to journalArticle

8 Scopus citations


The epithelial-mesenchymal transition (EMT) phenotype, whereby mature epithelial cells undergo phenotype transition and differentiate into motile, invasive cells, has been indicated in tumor metastasis. The melatonin hormone secreted by the pineal gland has an antioxidant effect and protects cells against carcinogenic substances that reduce tumor progression. However, the effects of melatonin in EMT and lung cancer metastasis are largely unknown. We found that melatonin down-regulated EMT by inhibiting Twist/Twist1 (twist family bHLH transcription factor 1) expression. This effect was mediated by MT1 receptor, PLC, p38/ERK and β-catenin signaling cascades. Twist expression was positively correlated with tumor stage and negatively correlated with MT1 expression in lung cancer specimens. Furthermore, melatonin inhibited EMT marker expression and lung cancer metastasis to liver in vivo Finally, melatonin shows promise in the treatment of lung cancer metastasis and deserves further study.

Original languageEnglish (US)
Pages (from-to)709-722
Number of pages14
JournalClinical science (London, England : 1979)
Issue number5
StatePublished - Mar 15 2019



  • EMT
  • Lung cancer
  • Melatonin
  • Twist

ASJC Scopus subject areas

  • Medicine(all)

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