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Hsu CM, Chang KC, Chuang TM, Chu ML, Lin PW, Liu HS, Kao SY, Liu YC, Huang CT, Wang MH, Yeh TJ, Gau YC, Du JS, Wang HC, Cho SF, Hsiao CE, Tsai Y, Hsiao SY, Hung LC, Yen CH, Hsiao HH. High G9a Expression in DLBCL and Its Inhibition by Niclosamide to Induce Autophagy as a Therapeutic Approach. Cancers (Basel) 2023; 15:4150. [PMID: 37627178 PMCID: PMC10452841 DOI: 10.3390/cancers15164150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/14/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Diffuse large B-cell lymphoma (DLBCL) is a malignant lymphoid tumor disease that is characterized by heterogeneity, but current treatment does not benefit all patients, which highlights the need to identify oncogenic genes and appropriate drugs. G9a is a histone methyltransferase that catalyzes histone H3 lysine 9 (H3K9) methylation to regulate gene function and expression in various cancers. METHODS TCGA and GTEx data were analyzed using the GEPIA2 platform. Cell viability under drug treatment was assessed using Alamar Blue reagent; the interaction between G9a and niclosamide was assessed using molecular docking analysis; mRNA and protein expression were quantified in DLBCL cell lines. Finally, G9a expression was quantified in 39 DLBCL patient samples. RESULTS The TCGA database analysis revealed higher G9a mRNA expression in DLBCL compared to normal tissues. Niclosamide inhibited DLBCL cell line proliferation in a time- and dose-dependent manner, reducing G9a expression and increasing p62, BECN1, and LC3 gene expression by autophagy pathway regulation. There was a correlation between G9a expression in DLBCL samples and clinical data, showing that advanced cancer stages exhibited a higher proportion of G9a-expressing cells. CONCLUSION G9a overexpression is associated with tumor progression in DLBCL. Niclosamide effectively inhibits DLBCL growth by reducing G9a expression via the cellular autophagy pathway; therefore, G9a is a potential molecular target for the development of therapeutic strategies for DLBCL.
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Affiliation(s)
- Chin-Mu Hsu
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
| | - Kung-Chao Chang
- Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
- Department of Pathology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Tzer-Ming Chuang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
| | - Man-Ling Chu
- M.Sc. Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (M.-L.C.); (P.-W.L.); (H.-S.L.)
| | - Pei-Wen Lin
- M.Sc. Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (M.-L.C.); (P.-W.L.); (H.-S.L.)
| | - Hsiao-Sheng Liu
- M.Sc. Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (M.-L.C.); (P.-W.L.); (H.-S.L.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Shih-Yu Kao
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
| | - Yi-Chang Liu
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chien-Tzu Huang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Min-Hong Wang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Tsung-Jang Yeh
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
| | - Yuh-Ching Gau
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Jeng-Shiun Du
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hui-Ching Wang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shih-Feng Cho
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chi-En Hsiao
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA;
| | - Yuhsin Tsai
- Graduate Institute of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Samuel Yien Hsiao
- Department of Biology, University of Rutgers-Camden, Camden, NJ 08102, USA;
| | - Li-Chuan Hung
- Long-Term Care and Health Management Department, Cheng Shiu University, Kaohsiung 833, Taiwan;
| | - Chia-Hung Yen
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hui-Hua Hsiao
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; (C.-M.H.); (T.-M.C.); (Y.-C.L.); (M.-H.W.); (T.-J.Y.); (Y.-C.G.); (J.-S.D.); (H.-C.W.); (S.-F.C.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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