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Liu M, Xu C, Cheng G, Chen Z, Pan X, Mei Y. E2F1 Facilitates the Proliferation and Stemness of Gastric Cancer Cells by Activating CDC25B Transcription and Modulating the MAPK Pathway. Biochem Genet 2024:10.1007/s10528-024-10864-9. [PMID: 38981987 DOI: 10.1007/s10528-024-10864-9] [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: 08/04/2023] [Accepted: 06/06/2024] [Indexed: 07/11/2024]
Abstract
Gastric cancer (GC) is a health problem that concerns people around the world. CDC25B is an essential cell cycle regulatory factor that is overexpressed in a variety of tumor cells. CDC25B plays a vital part in the progression and proliferation of malignant tumors. However, it is not yet clear that how CDC25B affects the stemness of GC cells. The study used bioinformatics to detect the expression of E2F1 and CDC25B in GC tissues and their correlation, as well as pathways enriched by CDC25B. We detected the expression of E2F1 and CDC25B in GC cell lines using quantitative reverse transcription polymerase chain reaction and tested the combination relationship between E2F1 and CDC25B using chromatin immunoprecipitation (ChIP) and dual-luciferase assays. We measured cell viability using CCK-8 assay, evaluated sphere-forming efficiency using sphere formation assay, and determined cell proliferation ability using colony formation assay. We also analyzed the expression of stemness markers and MAPK pathway-related proteins using western blot. In GC tissues and cells, CDC25B was upregulated. Silencing CDC25B could affect the MAPK pathway, thereby repressing the proliferation and stemness of GC cells. As predicted by bioinformatics, CDC25B had an upstream transcription factor, E2F1, which also had a high expression level in GC. Dual-luciferase and ChIP assays confirmed the combination relationship between the two. Rescue experiments uncovered that overexpression of CDC25B could reverse the impact induced by E2F1 knockdown on proliferation and stemness of cells. In conclusion, E2F1 could activate CDC25B transcription to regulate the MAPK pathway and enhance the proliferation and stemness of GC cells. We revealed a potential regulatory pathway of stemness of GC cells that was mediated by CDC25B, providing new ideas for improving and innovating GC treatment.
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Affiliation(s)
- Ming Liu
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China
| | - Chaobo Xu
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China
| | - Guoxiong Cheng
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China
| | - Zhengwei Chen
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China
| | - Xiaoming Pan
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China
| | - Yijun Mei
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, 323000, Zhejiang Province, China.
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Pan X, Xu C, Cheng G, Chen Z, Liu M, Mei Y. Transcription factor E2F3 activates CDC25B to regulate DNA damage and promote mitoxantrone resistance in stomach adenocarcinoma. Mol Biol Rep 2024; 51:90. [PMID: 38194158 DOI: 10.1007/s11033-023-08933-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/10/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND CDC25B, as a member of the cell cycle regulating protein family, is located in the cytoplasm and is involved in the transition of the cell cycle and mitosis. CDC25B is highly expressed in various tumors and is a newly discovered oncogene. This study aimed to investigate the impact of CDC25B on mitoxantrone resistance in stomach adenocarcinoma (STAD) and its possible mechanisms. METHODS This study analyzed the expression of CDC25B and its potential transcription factor E2F3 in STAD, as well as the IC50 values of tumor tissues by bioinformatics analysis. Expression levels of CDC25B and E2F3 in STAD cells were measured by qRT-PCR. MTT was utilized to evaluate cell viability and IC50 values of STAD cells, and comet assay was utilized to analyze the level of DNA damage in STAD cells. Western blot was used to analyze the expression of DNA damage-related proteins. The targeting relationship between E2F3 and CDC25B was validated by dual-luciferase and ChIP assays. RESULTS Bioinformatics analysis and molecular experiments showed that CDC25B and E2F3 were highly expressed in STAD, and CDC25B was enriched in the mismatch repair and nucleotide excision repair pathways. The IC50 values of tumor tissues with high expression of CDC25B were relatively high. Dual-luciferase and ChIP assays confirmed that CDC25B could be transcriptionally activated by E2F3. Cell experiments revealed that CDC25B promoted mitoxantrone resistance in STAD cells by regulating DNA damage. Further research found that low expression of E2F3 inhibited mitoxantrone resistance in STAD cells by DNA damage, but overexpression of CDC25B reversed the impact of E2F3 knockdown on mitoxantrone resistance in STAD cells. CONCLUSION This study confirmed a novel mechanism by which E2F3/CDC25B mediated DNA damage to promote mitoxantrone resistance in STAD cells, providing a new therapeutic target for STAD treatment.
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Affiliation(s)
- Xiaoming Pan
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China
| | - Chaobo Xu
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China
| | - Guoxiong Cheng
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China
| | - Zhengwei Chen
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China
| | - Ming Liu
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China
| | - Yijun Mei
- Department of Gastrointestinal Surgery, Lishui People's Hospital, No.15 Dazhong Street, Liandu District, Lishui, Zhejiang Province, 323000, China.
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Inacio KK, Pessoa ADS, Tokuhara CK, Pagnan AL, Sanches MLR, Fakhoury VS, Oliveira GSND, Oliveira FAD, Ximenes VF, Oliveira RCD. Menadione and protocatechuic acid: A drug combination with antitumor effects in murine osteosarcoma cells. Arch Biochem Biophys 2024; 751:109840. [PMID: 38040223 DOI: 10.1016/j.abb.2023.109840] [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: 07/17/2023] [Revised: 09/22/2023] [Accepted: 11/25/2023] [Indexed: 12/03/2023]
Abstract
Osteosarcoma (OS) is a primary malignant bone tumor that has an abnormal expression of oncogenesis and tumor suppressors and causes dysregulation of various signaling pathways. Thus, novel therapeutic strategies for OS are needed to overcome the resistance of traditional treatments. This study evaluated the cytotoxic and anticancer effects of the association between menadione (MEN) and protocatechuic acid (PCA) in murine OS cells (UMR-106). The concentrations were 3.12 μM of isolated MEN, 500 μM of isolated PCA, and their associations. We performed cell viability assays, morphology modification analysis, cell migration by the wound-healing method, apoptosis by flow cytometry, reactive oxygen species (ROS) production, gene expression of NOX by RT-qPCR, and degradation of MMP-2 and 9 by zymography. Our results showed that the association of MEN+PCA was more effective in OS cells than the compounds alone. The association decreased cell viability, delayed cell migration, and decreased the expression of NOX-2 and ROS. In addition, the MEN+PCA association induced a slight increase in the apoptotic process. In summary, the association can enhance the compound's antitumor effects and establish a higher selectivity for tumor cells, possibly caused by significant mitochondrial damage and antioxidant properties.
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Affiliation(s)
- Kelly Karina Inacio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Brazil
| | - Adriano de Souza Pessoa
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Brazil
| | - Cintia Kazuko Tokuhara
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Brazil
| | - Ana Lígia Pagnan
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Brazil
| | | | | | | | - Flavia Amadeu de Oliveira
- Sanford Children's Health Research Center. Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Valdecir Farias Ximenes
- Department of Chemistry, Faculty of Sciences, UNESP, São Paulo State University, Bauru, São Paulo, Brazil
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Ribeiro HF, de Castro Sant' Anna C, de Jesus Oliveira Kato V, de Sousa Brasil RM, Bona AB, da Costa DF, Lima IK, Soares PC, Guimarães APA, de Assumpção PP, Burbano RR. CDC25B Inhibition by menadione: a potential new therapeutical approach. Anticancer Agents Med Chem 2022; 22:2927-2932. [PMID: 35440317 DOI: 10.2174/1871520622666220418131935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/28/2022] [Accepted: 02/24/2022] [Indexed: 12/24/2022]
Abstract
Gastric cancer (GC) is the fifth most common type of tumor and the third leading cause of cancer death worldwide. The evolution of gastric carcinogenesis is still poorly understood and, for this reason, preclinical research protocols were established that included the development of gastric cancer cell lines and the establishment of models of gastric carcinogenesis in non-human primate Sapajus apella. A comprehensive literature search was performed in relevant databases such as PubMed, ResearchGate and Google Scholar to identify studies related to the topic. After an in-depth study of these reports, significant data/data were collected and compiled under appropriate headings. The main result of the studies carried out by the group on GC is the demonstration of the MYC gene overexpression as a common phenomenon in stomach carcinogenesis. Furthermore, we revealed that reducing the expression of the CDC25B gene, regulated by the MYC protein, is a therapeutic strategy against stomach tumors. This review article reveals preclinical evidence that treatment with menadione in experimental models of gastric tumorigenesis, in vivo and in vitro, inhibits the action of the phosphatase CDC25B and, consequently, prevents cell proliferation, invasion and migration.
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Tang Q, Xie Y, Liu Y, Zheng L. Synthesis of Mitochondria-targeted menadione cation derivatives: inhibiting mitochondrial thioredoxin reductase (TrxR2) and inducing apoptosis in MGC-803 cells. Bioorg Med Chem Lett 2022; 60:128586. [PMID: 35085721 DOI: 10.1016/j.bmcl.2022.128586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 11/25/2022]
Abstract
Menadione (VK3) is used as a powerful inducer of cellular reactive oxygen species (ROS) for many years and displays the high anti-cancer activities in vivo. Recently, the development of mitochondria-targeted drugs has been more and more appreciated. Here, the thirteen derivatives of VK3 were synthesized, which could localize in mitochondria by the triphenylphosphonium (TPP) cation or the nitrogen-based cation. The results of cytotoxicity from six human cancer cell lines showed that the targeted compounds T1-T13 displayed higher activity than VK3 with the average IC50 value around 1 μM. The results of cytotoxicity indicated that the substitutes on C-2, the linear alkyl chains on C-3 and cation moiety all could affect the cytotoxicity. The mechanistic studies showed that five representative compounds (T2, T3, T5, T8 and T13) could localize in cellular mitochondria, elicit ROS burst and collapse mitochondrial membrane potential (ΔΨm), leading to cytochrome C release and apoptosis in MGC-803 cells. Particularly, they could obviously inhibit mitochondrial thioredoxin reductase TrxR2 expression, thus leading to aggravate cellular oxidative stress.
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Affiliation(s)
- Qun Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yu Xie
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yongpeng Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Lifang Zheng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
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Li HX, Yang WY, Li LP, Zhou H, Li WY, Ma Y, Wang RL. Molecular dynamics study of CDC25B R492L mutant causing the activity decrease of CDC25B. J Mol Graph Model 2021; 109:108030. [PMID: 34509094 DOI: 10.1016/j.jmgm.2021.108030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/01/2021] [Accepted: 09/05/2021] [Indexed: 11/25/2022]
Abstract
Cell division cycle 25B (CDC25B) was responsible for regulating the various stages of cell division in the cell cycle. R492L was one of the common types of CDC25B mutants. Researches showed that compared to CDC25BWT, CDC25BR492L mutant had a ∼100-fold reduction in the rate constant for forming phosphatase intermediate (k2). However, the molecular basis of how the CDC25BR492L mutant influenced the process of binding between CDC25B and CDK2/CyclinA was not yet known. Therefore, the optimizations of three-dimensional structure of the CDC25BWT-CDK2/CyclinA system and the CDC25BR492L-CDK2/CyclinA system were constructed by ZDOCK and RDOCK, and five methods were employed to verify the reasonability of the docking structure. Then the molecular dynamics simulations on the two systems were performed to explore the reason why CDC25BR492L mutant caused the weak interactions between CDC25BR492L and CDK2/CyclinA, respectively. The remote docking site (Arg488-Tyr497) and the second active site (Lys538-Arg544) of CDC25B were observed to have high fluctuations in the CDC25BR492L-CDK2/CyclinA system with post-analysis, where the high fluctuation of these two regions resulted in weak interactions between CD25B and CDK2. In addition, Asp38-Glu42 and Asp206-Asp210 of CDK2 showed the slightly descending fluctuation, and CDK2 revealed an enhanced the self-interaction, which made CDK2 keep a relatively stable state in the CDC25BR492L-CDK2/CyclinA system. Finally, Leu492 of CDC25B was speculated to be the key residue, which had great effects on the binding between CDC25BR492L and CDK2 in the CDC25BR492L-CDK2/CyclinA system. Consequently, overall analyses appeared in this study ultimately offered a helpful understanding of the weak interactions between CDC25BR492L and CDK2.
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Affiliation(s)
- Hao-Xin Li
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Wen-Yu Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, People's Republic of China
| | - Li-Peng Li
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Hui Zhou
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Wei-Ya Li
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Ying Ma
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China.
| | - Run-Ling Wang
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, People's Republic of China.
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Bolitho EM, Worby NG, Coverdale JPC, Wolny JA, Schünemann V, Sadler PJ. Quinone Reduction by Organo-Osmium Half-Sandwich Transfer Hydrogenation Catalysts. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Nathan G. Worby
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | | | - Juliusz A. Wolny
- Fachbereich Physik, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 46, D-67663 Kaiserslautern, Germany
| | - Volker Schünemann
- Fachbereich Physik, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 46, D-67663 Kaiserslautern, Germany
| | - Peter J. Sadler
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
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