Connectivity map-based drug repositioning of bortezomib to reverse the metastatic effect of GALNT14 in lung cancer

Ok Seon Kwon, Haeseung Lee, Hyeon Joon Kong, Eun Ji Kwon, Ji Eun Park, Wooin Lee, Seungmin Kang, Mirang Kim, Wankyu Kim, Hyuk Jin Cha

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Despite the continual discovery of promising new cancer targets, drug discovery is often hampered by the poor druggability of these targets. As such, repurposing FDA-approved drugs based on cancer signatures is a useful alternative to cancer precision medicine. Here, we adopted an in silico approach based on large-scale gene expression signatures to identify drug candidates for lung cancer metastasis. Our clinicogenomic analysis identified GALNT14 as a putative driver of lung cancer metastasis, leading to poor survival. To overcome the poor druggability of GALNT14 in the control of metastasis, we utilized the Connectivity Map and identified bortezomib (BTZ) as a potent metastatic inhibitor, bypassing the direct inhibition of the enzymatic activity of GALNT14. The antimetastatic effect of BTZ was verified both in vitro and in vivo. Notably, both BTZ treatment and GALNT14 knockdown attenuated TGFβ-mediated gene expression and suppressed TGFβ-dependent metastatic genes. These results demonstrate that our in silico approach is a viable strategy for the use of undruggable targets in cancer therapies and for revealing the underlying mechanisms of these targets.

Original languageEnglish
Pages (from-to)4567-4580
Number of pages14
Issue number23
StatePublished - 4 Jun 2020

Bibliographical note

Funding Information:
Acknowledgements We appreciate Jeong-Hwan Kim, Seon-Young Kim and Dong-Uk Kim at Korea Research Institute of Bioscience and Biotechnology (KRIBB) for helpful discussions. This work was supported by a grant from the National Research Foundation of Korea (NRF-2017M3C9A5028691 from HJ.C, NRF-2019R1C1C1008710 from OS.K and NRF-2017M3A9B3061843 from W.K).

Publisher Copyright:
© 2020, The Author(s), under exclusive licence to Springer Nature Limited.


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