Potential anti-cancer effect of N-hydroxy-7-(2-naphthylthio) heptanomide (HNHA), a novel histone deacetylase inhibitor, for the treatment of thyroid cancer

Seok Mo Kim, Ki Cheong Park, Jeong Yong Jeon, Bup Woo Kim, Hyeung Kyoo Kim, Ho Jin Chang, Seung Hoon Choi, Cheong Soo Park, Hang Seok Chang

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19 Citations (Scopus)


Background: Thyroid cancer has been indicated to have a higher global proportion of DNA methylation and a decreased level of histone acetylation. Previous studies showed that histone gene reviser and epigenetic changes role significant parts in papillary and anaplastic thyroid cancer tumorigenesis. The goal of this research was to study the endoplasmic reticulum (ER) stress-mediated actions of the dominant histone deacetylase (HDAC) inhibitor, N-hydroxy-7-(2-naphthylthio) hepatonomide (HNHA), in thyroid cancer and to explore its effects on apoptotic cell death pathways. Methods: Experiments were achieved to conclude the effects of HNHA in papillary thyroid cancer (PTC) and anaplastic thyroid cancer (ATC) cell lines and xenografts, as compared with two other established HDAC inhibitors (SAHA; suberoylanilide hydroxamic acid and TSA; trichostatin A). Results: Apoptosis, which was induced by all HDAC inhibitors, was particularly significant in HNHA-treated cells, where noticeable B-cell lymphoma-2 (Bcl-2) suppression and caspase activation were observed both in vitro and in vivo. HNHA increased Ca2+ release from the ER to the cytoplasm. ER stress-dependent apoptosis was induced by HNHA, suggesting that it induced caspase-dependent apoptotic cell death in PTC and ATC. PTC and ATC xenograft studies demonstrated that the antitumor and pro-apoptotic effects of HNHA were greater than those of the established HDAC inhibitors. These HNHA activities reflected its induction of caspase-dependent and ER stress-dependent apoptosis on thyroid cancer cells. Conclusions: The present study indicated that HNHA possibly provide a new clinical approach to thyroid cancers, including ATC.

Original languageEnglish
Article number1003
JournalBMC cancer
Issue number1
Publication statusPublished - 2015 Dec 23

Bibliographical note

Funding Information:
This work was supported by a faculty research grant from Yonsei University College of Medicine for 2015-31-0256 and the Brain Korea 21 Project for Medical Science, Yonsei University.

Publisher Copyright:
© 2015 Kim et al.

All Science Journal Classification (ASJC) codes

  • Oncology
  • Genetics
  • Cancer Research


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