1
|
Nzitakera A, Surwumwe JB, Ndoricyimpaye EL, Uwamungu S, Uwamariya D, Manirakiza F, Ndayisaba MC, Ntakirutimana G, Seminega B, Dusabejambo V, Rutaganda E, Kamali P, Ngabonziza F, Ishikawa R, Rugwizangoga B, Iwashita Y, Yamada H, Yoshimura K, Sugimura H, Shinmura K. The spectrum of TP53 mutations in Rwandan patients with gastric cancer. Genes Environ 2024; 46:8. [PMID: 38459566 PMCID: PMC10921722 DOI: 10.1186/s41021-024-00302-y] [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: 11/23/2023] [Accepted: 02/18/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND Gastric cancer is the sixth most frequently diagnosed cancer and third in causing cancer-related death globally. The most frequently mutated gene in human cancers is TP53, which plays a pivotal role in cancer initiation and progression. In Africa, particularly in Rwanda, data on TP53 mutations are lacking. Therefore, this study intended to obtain TP53 mutation status in Rwandan patients with gastric cancer. RESULTS Formalin-fixed paraffin-embedded tissue blocks of 95 Rwandan patients with histopathologically proven gastric carcinoma were obtained from the University Teaching Hospital of Kigali. After DNA extraction, all coding regions of the TP53 gene and the exon-intron boundary region of TP53 were sequenced using the Sanger sequencing. Mutated TP53 were observed in 24 (25.3%) of the 95 cases, and a total of 29 mutations were identified. These TP53 mutations were distributed between exon 4 and 8 and most of them were missense mutations (19/29; 65.5%). Immunohistochemical analysis for TP53 revealed that most of the TP53 missense mutations were associated with TP53 protein accumulation. Among the 29 mutations, one was novel (c.459_477delCGGCACCCGCGTCCGCGCC). This 19-bp deletion mutation in exon 5 caused the production of truncated TP53 protein (p.G154Wfs*10). Regarding the spectrum of TP53 mutations, G:C > A:T at CpG sites was the most prevalent (10/29; 34.5%) and G:C > T:A was the second most prevalent (7/29; 24.1%). Interestingly, when the mutation spectrum of TP53 was compared to three previous TP53 mutational studies on non-Rwandan patients with gastric cancer, G:C > T:A mutations were significantly more frequent in this study than in our previous study (p = 0.013), the TCGA database (p = 0.017), and a previous study on patients from Hong Kong (p = 0.006). Even after correcting for false discovery, statistical significance was observed. CONCLUSIONS Our results suggested that TP53 G:C > T:A transversion mutation in Rwandan patients with gastric cancer is more frequent than in non-Rwandan patients with gastric cancer, indicating at an alternative etiological and carcinogenic progression of gastric cancer in Rwanda.
Collapse
Affiliation(s)
- Augustin Nzitakera
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
- Department of Biomedical Laboratory Sciences, School of Health Sciences, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Jean Bosco Surwumwe
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - Ella Larissa Ndoricyimpaye
- Department of Biomedical Laboratory Sciences, School of Health Sciences, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Université Catholique de Louvain, Médecine Expérimentale, Brussels, 1348, Belgium
| | - Schifra Uwamungu
- Department of Biomedical Laboratory Sciences, School of Health Sciences, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, SE-40530, Sweden
| | - Delphine Uwamariya
- Department of Biomedical Laboratory Sciences, School of Health Sciences, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Felix Manirakiza
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Marie Claire Ndayisaba
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Gervais Ntakirutimana
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Benoit Seminega
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Internal Medicine, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - Vincent Dusabejambo
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Internal Medicine, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - Eric Rutaganda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Internal Medicine, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - Placide Kamali
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Internal Medicine, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - François Ngabonziza
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
- Department of Internal Medicine, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
| | - Rei Ishikawa
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Belson Rugwizangoga
- Department of Pathology, University Teaching Hospital of Kigali, P.O. Box 655, Kigali, Rwanda
- Department of Pathology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, P.O. Box 3286, Kigali, Rwanda
| | - Yuji Iwashita
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Hidetaka Yamada
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Kimio Yoshimura
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, 160-8582, Japan
| | - Haruhiko Sugimura
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan.
- Sasaki Institute Sasaki Foundation, 2-2 Kanda Surugadai, Chiyoda-Ku, Tokyo, 101-0062, Japan.
| | - Kazuya Shinmura
- Department of Tumor Pathology, Hamamatsu University School of Medicine (HUSM), 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan.
| |
Collapse
|
2
|
Ko HJ, Chiou SJ, Tsai CY, Loh JK, Lin XY, Tran TH, Hou CC, Cheng TS, Lai JM, Chang PMH, Wang FS, Su CL, Huang CYF, Hong YR. BMX, a specific HDAC8 inhibitor, with TMZ for advanced CRC therapy: a novel synergic effect to elicit p53-, β-catenin- and MGMT-dependent apoptotic cell death. Cell Commun Signal 2022; 20:200. [PMID: 36575468 PMCID: PMC9793577 DOI: 10.1186/s12964-022-01007-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/26/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Despite advances in treatment, patients with refractory colorectal cancer (CRC) still have poor long-term survival, so there is a need for more effective therapeutic options. METHODS To evaluate the HDAC8 inhibition efficacy as a CRC treatment, we examined the effects of various HDAC8 inhibitors (HDAC8i), including BMX (NBM-T-L-BMX-OS01) in combination with temozolomide (TMZ) or other standard CRC drugs on p53 mutated HT29 cells, as well as wild-type p53 HCT116 and RKO cells. RESULTS We showed that HDAC8i with TMZ cotreatment resulted in HT29 arrest in the S and G2/M phase, whereas HCT116 and RKO arrest in the G0/G1 phase was accompanied by high sub-G1. Subsequently, this combination approach upregulated p53-mediated MGMT inhibition, leading to apoptosis. Furthermore, we observed the cotreatment also enabled triggering of cell senescence and decreased expression of stem cell biomarkers. Mechanistically, we found down-expression levels of β-catenin, cyclin D1 and c-Myc via GSK3β/β-catenin signaling. Intriguingly, autophagy also contributes to cell death under the opposite status of β-catenin/p62 axis, suggesting that there exists a negative feedback regulation between Wnt/β-catenin and autophagy. Consistently, the Gene Set Enrichment Analysis (GSEA) indicated both apoptotic and autophagy biomarkers in HT29 and RKO were upregulated after treating with BMX. CONCLUSIONS BMX may act as a HDAC8 eraser and in combination with reframed-TMZ generates a remarkable synergic effect, providing a novel therapeutic target for various CRCs. Video Abstract.
Collapse
Affiliation(s)
- Huey-Jiun Ko
- grid.412019.f0000 0000 9476 5696Graduate Institutes of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412019.f0000 0000 9476 5696Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan
| | - Shean-Jaw Chiou
- grid.412019.f0000 0000 9476 5696Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan
| | - Cheng-Yu Tsai
- grid.412019.f0000 0000 9476 5696Post Baccalaureate Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412027.20000 0004 0620 9374Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung, 80708 Taiwan
| | - Joon-Khim Loh
- grid.412027.20000 0004 0620 9374Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung, 80708 Taiwan
| | - Xin-Yi Lin
- grid.412019.f0000 0000 9476 5696Graduate Institutes of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412019.f0000 0000 9476 5696Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan
| | - Thu-Ha Tran
- grid.260539.b0000 0001 2059 7017Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan
| | - Chia-Chung Hou
- New Drug Research & Development Center, NatureWise Biotech & Medicals Corporation, Taipei, 112 Taiwan
| | - Tai-Shan Cheng
- grid.260539.b0000 0001 2059 7017Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan
| | - Jin-Mei Lai
- grid.256105.50000 0004 1937 1063Department of Life Science, Fu-Jen Catholic University, New Taipei City, 24205 Taiwan
| | - Peter Mu-Hsin Chang
- grid.260539.b0000 0001 2059 7017Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan ,grid.278247.c0000 0004 0604 5314Department of Oncology, Taipei Veterans General Hospital, Taipei, 11217 Taiwan ,grid.260539.b0000 0001 2059 7017Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan
| | - Feng-Sheng Wang
- grid.412047.40000 0004 0532 3650Department of Chemical Engineering, National Chung Cheng University, Chiayi, 62102 Taiwan
| | - Chun-Li Su
- grid.412090.e0000 0001 2158 7670Graduate Program of Nutrition Science, School of Life Science, National Taiwan Normal University, Taipei, 11677 Taiwan
| | - Chi-Ying F. Huang
- grid.412019.f0000 0000 9476 5696Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.260539.b0000 0001 2059 7017Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, 112 Taiwan ,grid.260539.b0000 0001 2059 7017Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan ,grid.260539.b0000 0001 2059 7017Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei, 11211 Taiwan
| | - Yi-Ren Hong
- grid.412019.f0000 0000 9476 5696Graduate Institutes of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412019.f0000 0000 9476 5696Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412036.20000 0004 0531 9758Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, 804 Taiwan ,grid.412027.20000 0004 0620 9374Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 80708 Taiwan ,grid.412019.f0000 0000 9476 5696Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan ,grid.412019.f0000 0000 9476 5696Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung, 80708 Taiwan
| |
Collapse
|
3
|
Annor GK, Elshabassy N, Lundine D, Conde DG, Xiao G, Ellison V, Bargonetti J. Oligomerization of Mutant p53 R273H is not Required for Gain-of-Function Chromatin Associated Activities. Front Cell Dev Biol 2021; 9:772315. [PMID: 34881245 PMCID: PMC8645790 DOI: 10.3389/fcell.2021.772315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/28/2021] [Indexed: 01/11/2023] Open
Abstract
The TP53 gene is often mutated in cancer, with missense mutations found in the central DNA binding domain, and less often in the C-terminal oligomerization domain (OD). These types of mutations are found in patients with the rare inherited cancer predisposition disorder called Li-Fraumeni syndrome. We previously found that mutant p53 (mtp53) R273H associates with replicating DNA and promotes the chromatin association of replication-associated proteins mini-chromosome maintenance 2 (MCM2), and poly ADP-ribose polymerase 1(PARP1). Herein, we created dual mutants in order to test if the oligomerization state of mtp53 R273H played a role in chromatin binding oncogenic gain-of-function (GOF) activities. We used site-directed mutagenesis to introduce point mutations in the OD in wild-type p53 (wtp53), and mtp53 R273H expressing plasmids. The glutaraldehyde crosslinking assay revealed that both wtp53 and mtp53 R273H formed predominantly tetramers, while the single OD mutant A347D, and the dual mtp53 R273H-A347D, formed predominantly dimers. The R337C, L344P, mtp53 R273H-R337C, and mtp53 R273H-L344P proteins formed predominantly monomers. Wtp53 was able to activate the cyclin-dependent kinase gene p21/waf and the p53 feedback regulator MDM2. As expected, the transactivation activity was lost for all the single mutants, as well as the mtp53 R273H-dual mutants. Importantly, mtp53 R273H and the dual oligomerization mutants, R273H-A347D, R273H-R337C, and R273H-L344P were able to interact with chromatin. Additionally, the dual oligomerization mutants, R273H-A347D, R273H-R337C, and R273H-L344P, maintained strong interactions with MCM2 and PARP1. Our findings suggest that while mtp53 R273H can form tetramers, tetramer formation is not required for the GOF associated chromatin interactions.
Collapse
Affiliation(s)
- George K Annor
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States
| | - Nour Elshabassy
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Devon Lundine
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States
| | - Don-Gerard Conde
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Gu Xiao
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Viola Ellison
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Jill Bargonetti
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States.,Department of Cell and Developmental Biology, Weill Cornell Medical College, New York City, NY, United States
| |
Collapse
|