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Shinohara Y, Komiya Y, Morimoto K, Endo Y, Terashima M, Suzuki T, Takino T, Ninomiya I, Yamada H, Uto Y. Development of UTX-143, a selective sodium-hydrogen exchange subtype 5 inhibitor, using amiloride as a lead compound. Bioorg Med Chem 2024; 99:117603. [PMID: 38246115 DOI: 10.1016/j.bmc.2024.117603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
NHE5, an isoform of the Na+/H+ exchanger (NHE) protein, is an ion-transporting membrane protein that regulates intracellular pH and is highly expressed in colorectal adenocarcinoma. Therefore, we hypothesized that NHE5 inhibitors can be used as anticancer drugs. However, because NHE1 is ubiquitously expressed in all cells, it is extremely important to demonstrate its selective inhibitory activity against NHE5. We used amiloride, an NHE non-selective inhibitor, as a lead compound and created UTX-143, which has NHE5-selective inhibitory activity, using a structure-activity relationship approach. UTX-143 showed selective cytotoxic effects on cancer cells and reduced the migratory and invasive abilities of cancer cells. These results suggest a new concept wherein drugs exhibit cancer-specific cytotoxic effects through selective inhibition of NHE5 and the possibility of UTX-143 as a lead NHE5-selective inhibitor.
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Affiliation(s)
- Yusei Shinohara
- Graduate School of Technology, Industrial and Social Science, Tokushima University, Minamijosanjimacho-2, Tokushima 770-8506, Japan
| | - Yuki Komiya
- Graduate School of Technology, Industrial and Social Science, Tokushima University, Minamijosanjimacho-2, Tokushima 770-8506, Japan
| | - Kashin Morimoto
- Graduate School of Technology, Industrial and Social Science, Tokushima University, Minamijosanjimacho-2, Tokushima 770-8506, Japan
| | - Yoshio Endo
- Central Research Resource Branch, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Minoru Terashima
- Division of Functional Geneomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takeshi Suzuki
- Division of Functional Geneomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takahisa Takino
- Division of Education for Global Standard, Institute of Liberal Arts and Science, Kanazawa University Kakuma-machi, Kanazawa 920-1192, Japan
| | - Itasu Ninomiya
- Director of Central Medical Center and Department of Surgery, Fukui Prefectural Hospital, Yotsui-2, Fukui 910-0846, Japan
| | - Hisatsugu Yamada
- Graduate School of Technology, Industrial and Social Science, Tokushima University, Minamijosanjimacho-2, Tokushima 770-8506, Japan
| | - Yoshihiro Uto
- Graduate School of Technology, Industrial and Social Science, Tokushima University, Minamijosanjimacho-2, Tokushima 770-8506, Japan.
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