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Liu Z, Wang XY, Wang HW, Liu SL, Zhang C, Liu F, Guo Y, Gao FH. Autophagic degradation of CDK4 is responsible for G0/G1 cell cycle arrest in NVP-BEZ235-treated neuroblastoma. Cancer Biol Ther 2024; 25:2385517. [PMID: 39087955 PMCID: PMC11296530 DOI: 10.1080/15384047.2024.2385517] [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: 11/10/2023] [Revised: 07/12/2024] [Accepted: 07/24/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND CDK4 is highly expressed and associated with poor prognosis and decreased survival in advanced neuroblastoma (NB). Targeting CDK4 degradation presents a potentially promising therapeutic strategy compared to conventional CDK4 inhibitors. However, the autophagic degradation of the CDK4 protein and its anti-proliferation effect in NB cells has not been mentioned. RESULTS We identified autophagy as a new pathway for the degradation of CDK4. Firstly, autophagic degradation of CDK4 is critical for NVP-BEZ235-induced G0/G1 arrest, as demonstrated by the overexpression of CDK4, autophagy inhibition, and blockade of autophagy-related genes. Secondly, we present the first evidence that p62 binds to CDK4 and then enters the autophagy-lysosome to degrade CDK4 in a CTSB-dependent manner in NVP-BEZ235 treated NB cells. Similar results regarding the interaction between p62 and CDK4 were observed in the NVP-BEZ235 treated NB xenograft mouse model. CONCLUSIONS Autophagic degradation of CDK4 plays a pivotal role in G0/G1 cell cycle arrest in NB cells treated with NVP-BEZ235.
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Affiliation(s)
- Zhen Liu
- Department of Clinical Laboratory, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Oncology, Shanghai ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Yang Wang
- Department of Blood Transfusion, The Sanmenxia Central Hospital, Sanmenxia, Henan Province, China
| | - Han-Wei Wang
- Department of Rheumatology and Immunology, Bengbu Third People’s Hospital Affiliated to Bengbu Medical College, Bengbu, Anhui, China
| | - Shan-Ling Liu
- Department of Clinical Laboratory, The First Hospital of Changsha City,Changsha, Hunan, China
| | - Chao Zhang
- Department of Geriatrics, Shanghai ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Feng Liu
- Department of Oncology, Shanghai ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Guo
- Department of Pathology, Yellow River Hospital Attached Henan University of Science and Technology, Sanmenxia, Henan Province, China
| | - Feng-Hou Gao
- Department of Oncology, Shanghai ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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Li G, Li Q, Tong Y, Zeng J, Dang T, Yang N, Zhou Y, Ma L, Ge Q, Zhao Z. The anticancer mechanisms of Toxoplasma gondii rhoptry protein 16 on lung adenocarcinoma cells. Cancer Biol Ther 2024; 25:2392902. [PMID: 39174877 PMCID: PMC11346528 DOI: 10.1080/15384047.2024.2392902] [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: 09/06/2023] [Revised: 04/29/2024] [Accepted: 08/11/2024] [Indexed: 08/24/2024] Open
Abstract
Lung adenocarcinoma is the most prevalent subtype of lung cancer, which is the leading cause of cancer-related mortality worldwide. Toxoplasma gondii (T.gondii) Rhoptry protein 16 (ROP16) has been shown to quickly enter the nucleus, and through activate host cell signaling pathways by phosphorylation STAT3 and may affect the survival of tumor cells. This study constructed recombinant lentiviral expression vector of T. gondii ROP16 I/II/III and stably transfected them into A549 cells, and the effects of ROP16 on cell proliferation, cell cycle, apoptosis, invasion, and migration of A549 cells were explored by utilizing CCK-8, flow cytometry, qPCR, Western blotting, TUNEL, Transwell assay, and cell scratch assay, and these effects were confirmed in the primary human lung adenocarcinoma cells from postoperative cancer tissues of patients. The type I and III ROP16 activate STAT3 and inhibited A549 cell proliferation, regulated the expression of p21, CDK6, CyclinD1, and induced cell cycle arrest at the G1 phase. ROP16 also regulated the Bax, Bcl-2, p53, cleaved-Caspase3, and Caspase9, inducing cell apoptosis, and reduced the invasion and migration of A549 cells, while type II ROP16 protein had no such effect. Furthermore, in the regulation of ROP16 on primary lung adenocarcinoma cells, type I and III ROP16 showed the same anticancer potential. These findings confirmed the anti-lung adenocarcinoma effect of type I and III ROP16, offering fresh perspectives on the possible application of ROP16 as a target with adjuvant therapy for lung adenocarcinoma and propelling the field of precision therapy research toward parasite treatment of tumors.
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Affiliation(s)
- Guangqi Li
- Medical Laboratory Center, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Clinical Pathogenic Microorganisms, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Clinical Research Center of Medical Laboratory, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Qinhui Li
- College of Life Sciences, Ningxia University, Yinchuan, China
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan, China
| | - Yongqing Tong
- Department of Clinical laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jin Zeng
- College of Life Sciences, Ningxia University, Yinchuan, China
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan, China
| | - Tiantian Dang
- Medical Laboratory Center, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Clinical Pathogenic Microorganisms, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Clinical Research Center of Medical Laboratory, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Ningai Yang
- Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yuning Zhou
- The First Clinical Medical College, Ningxia Medical University, Yinchuan, China
| | - Lei Ma
- College of Life Sciences, Ningxia University, Yinchuan, China
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan, China
| | - Qirui Ge
- The First Clinical Medical College, Ningxia Medical University, Yinchuan, China
| | - Zhijun Zhao
- Medical Laboratory Center, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Clinical Pathogenic Microorganisms, General Hospital of Ningxia Medical University, Yinchuan, China
- Ningxia Clinical Research Center of Medical Laboratory, General Hospital of Ningxia Medical University, Yinchuan, China
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3
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Yang J, Zhu X, Kong D, Wang Y, Yang Y, Liu Y, Yin H. Significant enhancement of anticancer effect of iridium (III) complexes encapsulated in liposomes. J Inorg Biochem 2024; 261:112706. [PMID: 39197384 DOI: 10.1016/j.jinorgbio.2024.112706] [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: 05/10/2024] [Revised: 07/12/2024] [Accepted: 08/23/2024] [Indexed: 09/01/2024]
Abstract
In this study, the ligand EIPP (5-ethoxy-2-(1H-imidazo[4,5-f] [1,10] phenanthrolin-2-yl)phenol) and [Ir(ppy)2(EIPP)](PF6)] (5a, ppy = 2-phenylpyridine) and [Ir(piq)2(EIPP)](PF6)] (5b, piq = 1-phenylisoquinoline) were synthesized and they were entrapped into liposomes to produce 5alipo and 5blipo. 5a and 5b were characterized via HRMS, NMR, UV-vis and IR. The cytotoxicity of 5a, 5b, 5alipo and 5blipo on cancer and non-cancer cells was estimated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). MTT assay demonstrated that 5a and 5b did not show any significant cellular activity but their liposome-encapsulated 5alipo and 5blipo had significant toxic effects. The mechanism of 5alipo, 5blipo-inducing apoptosis was explored by studying cellular uptake, mitochondrial localization, mitochondrial membrane potential, cytochrome C, glutathione (GSH), malondialdehyde (MDA) and protein immunoblotting. The results demonstrated that 5alipo and 5blipo caused a release of cytochrome C, downregulated the expression of Bcl-2, upregulated the expression of BAX, activated caspase 3, and downregulated PARP expression. It was shown that 5alipo and 5blipo could inhibit cancer cell proliferation in G2/M phase by regulating p53 and p21 proteins. Additionally, 5alipo and 5blipo induced autophagy through an adjustment from LC3-I to LC3-II and caused ferroptosis. The in vivo antitumor activity of 5alipo was examined in detail.
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Affiliation(s)
- Jiawan Yang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xuqi Zhu
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Defei Kong
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yi Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yan Yang
- Department of Pharmacy, Guangdong Second Provincial General Hospital, 510317, PR China.
| | - Yunjun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Hui Yin
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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4
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Zhu Z, Cao H, Yan H, Liu H, Hong Z, Sun A, Liu T, Mao F. Prognostic iron-metabolism signature robustly stratifies single-cell characteristics of hepatocellular carcinoma. Comput Struct Biotechnol J 2024; 23:929-941. [PMID: 38375529 PMCID: PMC10875160 DOI: 10.1016/j.csbj.2024.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024] Open
Abstract
Cancer immunotherapy has shown to be a promising method in treating hepatocellular carcinoma (HCC), but suboptimal responses in patients are attributed to cellular and molecular heterogeneity. Iron metabolism-related genes (IRGs) are important in maintaining immune system homeostasis and have the potential to help develop new strategies for HCC treatment. Herein, we constructed and validated the iron-metabolism gene prognostic index (IPX) using univariate Cox proportional hazards regression and LASSO Cox regression analysis, successfully categorizing HCC patients into two groups with distinct survival risks. Then, we performed single-sample gene set enrichment analysis, weighted correlation network analysis, gene ontology enrichment analysis, cellular lineage analysis, and SCENIC analysis to reveal the key determinants underlying the ability of this model based on bulk and single-cell transcriptomic data. We identified several driver transcription factors specifically activated in specific malignant cell sub-populations to contribute to the adverse survival outcomes in the IPX-high subgroup. Within the tumor microenvironment (TME), T cells displayed significant diversity in their cellular characteristics and experienced changes in their developmental paths within distinct clusters identified by IPX. Interestingly, the proportion of Treg cells was increased in the high-risk group compared with the low-risk group. These results suggest that iron-metabolism could be involved in reshaping the TME, thereby disrupting the cell cycle of immune cells. This study utilized IRGs to construct a novel and reliable model, which can be used to assess the prognosis of patients with HCC and further clarify the molecular mechanisms of IRGs in HCC at single-cell resolution.
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Affiliation(s)
- Zhipeng Zhu
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China
- Cancer Center, Peking University Third Hospital, Beijing 100191, China
| | - Huang Cao
- School of Medicine, Xiamen University, Xiamen, Fujian 361100, China
| | - Hongyu Yan
- School of Medicine, Xiamen University, Xiamen, Fujian 361100, China
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Hanzhi Liu
- The Third Clinical Medical College, Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Zaifa Hong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Xiamen University, Xiamen, Fujian 361103, China
| | - Anran Sun
- Oncology Research Center, Foresea Life Insurance Guangzhou General Hospital, Guangzhou, Guangdong 511300, China
- Research Center for Translational Medicine, The First Affiliated Hospital, School of Medicine, Xiamen University, Xiamen, Fujian 361003, China
| | - Tong Liu
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China
- Cancer Center, Peking University Third Hospital, Beijing 100191, China
| | - Fengbiao Mao
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China
- Cancer Center, Peking University Third Hospital, Beijing 100191, China
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5
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Park S, Kim S, Kim MY, Lee SS, Choi J. Pituitary tumor‑transforming gene 1 regulates the senescence and apoptosis of oral squamous cell carcinoma in a p21‑dependent DNA damage response manner. Oncol Rep 2024; 52:135. [PMID: 39155881 PMCID: PMC11338240 DOI: 10.3892/or.2024.8794] [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: 03/26/2024] [Accepted: 06/06/2024] [Indexed: 08/20/2024] Open
Abstract
Pituitary tumor‑transforming gene 1 (PTTG1), also known as securin, is a proto‑oncogene involved in the development of various cancers by promoting cell proliferation and mobility. However, its underlying biological mechanisms in oral squamous cell carcinoma (OSCC) progression remain unclear. in the present study, it was sought to elucidate the role of PTTG1 as an oncogene in OSCC progression and was attempted to unravel the underlying mechanism and impact of PTTG1 expression on cell cycle, cell death, and cellular senescence. The effect of double strand break on PTTG1 expression was investigated in OSCC growth. To identify the role of PTTG1 in OSCC growth, the cell viability and senescence was analyzed by EdU and senescence‑associated beta‑galactosidase (SA‑β‑gal) assay, respectively. To verify the DNA damage‑induced senescence of PTTG1, the chromosomal damage in OSCC was analyzed in vitro. Finally, the effect of PTTG1 on tumor growth and gene expression related to cell viability and DNA damaged‑induced senescence was investigated in vivo. PTTG1 expression was compared between OSCC and healthy patient samples (n=32) using reverse transcription‑quantitative PCR and immunohistochemistry; and it was found that PTTG1 expression was upregulated in OSCC. Small interfering RNA‑mediated knockdown of PTTG1 in two OSCC cell lines revealed that PTTG1 downregulation significantly inhibited cell proliferation and arrested the cell cycle pathway as evidenced by changes in checkpoint genes (such as cyclin D1, E and B1). PTTG1 knockdown also increased apoptosis, as evidenced by the upregulation of apoptotic genes [such as cleaved (c‑) Caspase‑7 and c‑poly (ADP‑ribose) polymerase]. Moreover, PTTG1 downregulation promoted cellular senescence, as shown by western blotting and SA‑β‑gal staining. Finally, senescence‑induced DNA damage was observed in OSCC cells, which accelerates genomic instability, through chromosomal damage analysis. Taken together, the present findings suggested that PTTG1 acts as a proto‑oncogene; regulates cell proliferation, cell cycle, cellular senescence and DNA damage in OSCC; and may serve as a novel diagnostic biomarker and potential therapeutic target for OSCC.
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Affiliation(s)
- Suyeon Park
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung-si, Gangwon-do 25457, Republic of Korea
| | - Shihyun Kim
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung-si, Gangwon-do 25457, Republic of Korea
| | - Moon-Young Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University, Dongnam-gu, Cheonan 31116, Republic of Korea
| | - Sang Shin Lee
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung-si, Gangwon-do 25457, Republic of Korea
| | - Jongho Choi
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung-si, Gangwon-do 25457, Republic of Korea
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6
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Li R, Li Z, Luo W, Zhu X, Luo B. Identification of immunosenescence of unconventional T cells in hepatocellular carcinoma. Comput Biol Chem 2024; 112:108148. [PMID: 39004028 DOI: 10.1016/j.compbiolchem.2024.108148] [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: 04/09/2024] [Revised: 06/01/2024] [Accepted: 07/08/2024] [Indexed: 07/16/2024]
Abstract
Accumulation of senescent cells is a recognized feature in hepatocellular carcinoma (HCC), but their specific types and prognostic implications remain under investigation. This study aimed to delineate senescent cell types and their senescent patterns in HCC using publicly available bulk and single-cell mRNA sequencing data. Through gene expression and gene set enrichment analysis, we identified distinct senescent patterns within HCC samples. Notably, unconventional T cells, specifically natural killer T cells and γδT cells, were found to be the predominant senescent cell types. These cells exhibited enriched pathways related to DNA damage, senescence and the negative regulation of lymphocyte activation. Furthermore, we observed upregulation of the mTOR signaling pathway, which correlated positively with the expression of senescence-associated genes. This suggests a potential regulatory role for mTOR in the senescence of HCC. Strikingly, patients with elevated expression of senescence markers, including p16INK4A, p21, and GLB1, demonstrated significantly reduced overall survival rates. Our findings indicate that immunosenescence in unconventional T cells may play a role in HCC progression. The potential therapeutic implications of targeting the mTOR pathway or eliminating senescent unconventional T cells warrant further exploration to improve HCC patient outcomes.
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Affiliation(s)
- Rumei Li
- Department of Ultrasound, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Zhaoxi Li
- Central Laboratory, Dongguan People's Hospital/Affiliated Dongguan Hospital, Southern Medical University, Dongguan 523069, China
| | - Wanrong Luo
- Department of Ultrasound, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Xiaotong Zhu
- Department of Ultrasound, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Baoming Luo
- Department of Ultrasound, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China.
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7
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Chen LY, Singha Roy SJ, Jadhav AM, Wang WW, Chen PH, Bishop T, Erb MA, Parker CG. Functional Investigations of p53 Acetylation Enabled by Heterobifunctional Molecules. ACS Chem Biol 2024; 19:1918-1929. [PMID: 39250704 DOI: 10.1021/acschembio.4c00438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
Post-translational modifications (PTMs) dynamically regulate the critical stress response and tumor suppressive functions of p53. Among these, acetylation events mediated by multiple acetyltransferases lead to differential target gene activation and subsequent cell fate. However, our understanding of these events is incomplete due to, in part, the inability to selectively and dynamically control p53 acetylation. We recently developed a heterobifunctional small molecule system, AceTAG, to direct the acetyltransferase p300/CBP for targeted protein acetylation in cells. Here, we expand AceTAG to leverage the acetyltransferase PCAF/GCN5 and apply these tools to investigate the functional consequences of targeted p53 acetylation in human cancer cells. We demonstrate that the recruitment of p300/CBP or PCAF/GCN5 to p53 results in distinct acetylation events and differentiated transcriptional activities. Further, we show that chemically induced acetylation of multiple hotspot p53 mutants results in increased stabilization and enhancement of transcriptional activity. Collectively, these studies demonstrate the utility of AceTAG for functional investigations of protein acetylation.
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Affiliation(s)
- Li-Yun Chen
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Soumya Jyoti Singha Roy
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Appaso M Jadhav
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Wesley W Wang
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Pei-Hsin Chen
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Timothy Bishop
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Michael A Erb
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Christopher G Parker
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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8
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Teimouri M, Homayouni Tabrizi M, Karimi E. The selective proapoptotic impact of the myricetin-loaded alginate-cellulose hybrid nanocrystals (MAC-NCs) on the human AGS gastric cancer cells. Mol Biol Rep 2024; 51:998. [PMID: 39299971 DOI: 10.1007/s11033-024-09864-0] [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: 05/13/2024] [Accepted: 08/14/2024] [Indexed: 09/22/2024]
Abstract
BACKGROUND Myricetin, a flavanol present in fruits, tea, and vegetables, has the potential to reduce chronic diseases like gastric cancer by promoting cell death and stopping cell growth. However, its limited bioactivity due to its short lifespan and poor solubility in water has been a challenge. The current research focuses on incorporating myricetin into alginate-cellulose hybrid nanocrystals to enhance its selective proapoptotic effects on human AGS gastric cancer cells. METHODS MAC-NCs, myricetin-loaded alginate-cellulose hybrid nanocrystals, were synthesized using a combined co-precipitation/ultrasonic homogenization method and characterized through Dynamic Light Scattering (DLS), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM), and Zeta-potential analyses. Their cytotoxic activity was tested on cancerous (AGS) and normal (Huvec) cells, revealing selective toxicity. Apoptotic markers, Caspase 8 and Caspase 9, gene expression was measured, and cell death type was confirmed using DAPI staining and flow cytometry on AGS cells. RESULTS Synthesized MAC-NCs, measuring 40 nm, showed significant selective toxicity on human gastric cells (IC50 of 31.05 µg/mL) compared to normal endothelial cells (IC50 of 214.26 µg/mL). DAPI and annexin flow cytometry revealed increased apoptotic bodies in gastric cells, indicating apoptosis. However, the apoptosis was found to be independent of Caspase-8 and Caspase-9. CONCLUSION The current study provides critical insights into the therapeutic potential of MAC-NCs for gastric cancer treatment. Based on the notable induction of apoptosis in the AGS cancer cell line, the synthesized MAC-NCs exhibit promising potential as a selective anti-gastric cancer agent. However, further in-vivo studies are necessary to confirm and quantify the nanoparticle's selective toxicity and pharmaceutical properties in future investigations.
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Affiliation(s)
- Mahdieh Teimouri
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | - Ehsan Karimi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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9
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Sadeghloo Z, Nabavi-Rad A, Zali MR, Klionsky DJ, Yadegar A. The interplay between probiotics and host autophagy: mechanisms of action and emerging insights. Autophagy 2024. [PMID: 39291740 DOI: 10.1080/15548627.2024.2403277] [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: 05/07/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 09/19/2024] Open
Abstract
Autophagy, a lysosome-dependent protein degradation mechanism, is a highly conserved catabolic process seen in all eukaryotes. This cell protection system, which is present in all tissues and functions at a basic level, can be up- or downregulated in response to various stresses. A disruption in the natural route of the autophagy process is frequently followed by an interruption in the inherent operation of the body's cells and organs. Probiotics are live bacteria that protect the host through various mechanisms. One of the processes through which probiotics exert their beneficial effects on various cells and tissues is autophagy. Autophagy can assist in maintaining host homeostasis by stimulating the immune system and affecting numerous physiological and pathological responses. In this review, we particularly focus on autophagy impairments occurring in several human illnesses and investigate how probiotics affect the autophagy process under various circumstances.
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Affiliation(s)
- Zahra Sadeghloo
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Nabavi-Rad
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Daniel J Klionsky
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, USA
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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10
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Bayat M, Golestani S, Motlaghzadeh S, Bannazadeh Baghi H, Lalehzadeh A, Sadri Nahand J. War or peace: Viruses and metastasis. Biochim Biophys Acta Rev Cancer 2024; 1879:189179. [PMID: 39299491 DOI: 10.1016/j.bbcan.2024.189179] [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: 06/10/2024] [Revised: 09/04/2024] [Accepted: 09/07/2024] [Indexed: 09/22/2024]
Abstract
Metastasis, the dissemination of malignant cells from a primary tumor to secondary sites, poses a catastrophic burden to cancer treatment and is the predominant cause of mortality in cancer patients. Metastasis as one of the main aspects of cancer progression could be strongly under the influence of viral infections. In fact, viruses have been central to modern cancer research and are associated with a great number of cancer cases. Viral-encoded elements are involved in modulating essential pathways or specific targets that are implicated in different stages of metastasis. Considering the continuous emergence of new viruses and the establishment of their contribution to cancer progression, the warfare between viruses and cancer appears to be endless. Here we aimed to review the critical mechanism and pathways involved in cancer metastasis and the influence of viral machinery and various routes that viruses adopt to manipulate those pathways for their benefit.
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Affiliation(s)
- Mobina Bayat
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahin Golestani
- Department of ophthalmology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Motlaghzadeh
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Bannazadeh Baghi
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aidin Lalehzadeh
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javid Sadri Nahand
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Devillers R, Dos Santos A, Destombes Q, Laplante M, Elowe S. Recent insights into the causes and consequences of chromosome mis-segregation. Oncogene 2024:10.1038/s41388-024-03163-5. [PMID: 39278989 DOI: 10.1038/s41388-024-03163-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Revised: 09/04/2024] [Accepted: 09/06/2024] [Indexed: 09/18/2024]
Abstract
Mitotic cells face the challenging task of ensuring accurate and equal segregation of their duplicated, condensed chromosomes between the nascent daughter cells. Errors in the process result in chromosome missegregation, a significant consequence of which is the emergence of aneuploidy-characterized by an imbalance in chromosome number-and the associated phenomenon of chromosome instability (CIN). Aneuploidy and CIN are common features of cancer, which leverages them to promote genome heterogeneity and plasticity, thereby facilitating rapid tumor evolution. Recent research has provided insights into how mitotic errors shape cancer genomes by inducing both numerical and structural chromosomal changes that drive tumor initiation and progression. In this review, we survey recent findings regarding the mitotic causes and consequences of aneuploidy. We discuss new findings into the types of chromosome segregation errors that lead to aneuploidy and novel pathways that protect genome integrity during mitosis. Finally, we describe new developments in our understanding of the immediate consequences of chromosome mis-segregation on the genome stability of daughter cells.
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Affiliation(s)
- Romain Devillers
- Centre de Recherche sur le Cancer, CHU de Québec-Université Laval, Québec City, QC, Canada
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Axe de reproduction, santé de la mère et de l'enfant, Québec, QC, Canada
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval, Québec, QC, Canada
- Regroupement Québécois de Recherche sur la Fonction, L'ingénierie et les Applications des Protéines, Québec, Canada
| | - Alexsandro Dos Santos
- Centre de Recherche sur le Cancer, CHU de Québec-Université Laval, Québec City, QC, Canada
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Axe de reproduction, santé de la mère et de l'enfant, Québec, QC, Canada
- Regroupement Québécois de Recherche sur la Fonction, L'ingénierie et les Applications des Protéines, Québec, Canada
| | - Quentin Destombes
- Centre de Recherche sur le Cancer, CHU de Québec-Université Laval, Québec City, QC, Canada
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Axe de reproduction, santé de la mère et de l'enfant, Québec, QC, Canada
- Regroupement Québécois de Recherche sur la Fonction, L'ingénierie et les Applications des Protéines, Québec, Canada
| | - Mathieu Laplante
- Centre de Recherche sur le Cancer, CHU de Québec-Université Laval, Québec City, QC, Canada
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval, Québec, QC, Canada
| | - Sabine Elowe
- Centre de Recherche sur le Cancer, CHU de Québec-Université Laval, Québec City, QC, Canada.
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Axe de reproduction, santé de la mère et de l'enfant, Québec, QC, Canada.
- Regroupement Québécois de Recherche sur la Fonction, L'ingénierie et les Applications des Protéines, Québec, Canada.
- Département de Pédiatrie, Faculté de Médecine, Université Laval, Québec City, QC, Canada.
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Ye J, Sun X, Jiang Q, Gui J, Feng S, Qin B, Xie L, Guo A, Dong J, Sang M. Umbilical cord blood-derived exosomes attenuate dopaminergic neuron damage of Parkinson's disease mouse model. J Nanobiotechnology 2024; 22:567. [PMID: 39277761 PMCID: PMC11401276 DOI: 10.1186/s12951-024-02773-1] [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: 05/09/2024] [Accepted: 08/14/2024] [Indexed: 09/17/2024] Open
Abstract
BACKGROUND Umbilical cord blood (UCB) is a rich source of multifunctional stem cells characterized by low immunogenicity. Recent research in the fields of aging and regenerative medicine has revealed the potential of human umbilical cord blood-derived exosomes (UCB-Exos) in promoting wound healing, anti-aging, and regeneration. However, their role in neurodegenerative diseases, specifically Parkinson's disease (PD), remains unexplored. This study investigates the potential therapeutic effects and underlying mechanisms of UCB-Exos on PD. METHODS Large extracellular vesicles (LEv), Exos, and soluble fractions (SF) of human UCB plasma were extracted to investigate their effects on motor dysfunction of the MPTP-induced PD mouse model and identify the key components that improve PD symptoms. UCB-Exos were administered by the caudal vein to prevent or treat the PD mouse model. The motor function and pathological markers were detected. Differentially expressed gene and KEGG enrichment pathways were screened by transcriptome sequence. MN9D and SH-SY5Y cells were cultured and evaluated for cell viability, oxidative stress, cell cycle, and aging-related indexes by qRT-PCR, western blot, immunofluorescence, and flow cytometry. The protein expression level of the MAPK p38 and ERK1/2 signaling pathway was detected by western blot. RESULTS We observed that LEv, Exos, and SF all exhibited potential in ameliorating motor dysfunction in MPTP-induced PD model mice, with UCB-Exos demonstrating the most significant effect. UCB-Exos showed comparable efficacy in preventing and treating motor dysfunction, cognitive decline, and substantia nigra pathological damage in PD mice. Further investigations revealed that UCB-Exos could potentially alleviate oxidative damage, aging and degeneration, and energy metabolism disorders in neurons. Transcriptome sequencing results corroborated that genes differentially expressed due to UCB-Exos were primarily enriched in the neuroactive ligand-receptor interaction, Dopaminergic synapse, and MAPK signaling pathway. We also observed that UCB-Exos significantly inhibited the hyperphosphorylation of the MAPK p38 and ERK1/2 signaling pathways both in vitro and in vivo. CONCLUSIONS Our study provides a comprehensive evaluation of UCB-Exos on the neuroprotective effects and suggests that inhibition of hyperphosphorylation of MAPK p38 and ERK 1/2 signaling pathways by regulating transcription levels of HspB1 and Ppef2 may be the key mechanism for UCB-Exos to improve PD-related pathological features.
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Affiliation(s)
- Junjie Ye
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
- Clinical Laboratory, Wuhan Asia Heart Hospital, Wuhan, 430022, China
| | - Xiaodong Sun
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
- Hubei Provincial Clinical Research Center for Umbilical Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Qi Jiang
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Jianjun Gui
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Shenglan Feng
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Bingqing Qin
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Lixia Xie
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Ai Guo
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China
| | - Jinju Dong
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China.
| | - Ming Sang
- Research Center for Translational Medicine, Department of Anesthesiology, Department of Obstetrics, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei Provincial Clinical Research Center for Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei University of Medicine, 15 Jiefang Road, Xiangyang, 441000, China.
- Hubei Provincial Clinical Research Center for Umbilical Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China.
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13
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Yin Q, Hu Y, Dong Z, Lu J, Wang H. Cellular, Structural Basis, and Recent Progress for Targeting Murine Double Minute X (MDMX) in Tumors. J Med Chem 2024; 67:14723-14741. [PMID: 39185935 DOI: 10.1021/acs.jmedchem.4c00913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Murine double minute X (MDMX) is an oncoprotein that mainly has a negative regulatory effect on the tumor suppressor p53 to induce tumorigenesis. As MDMX is highly expressed in various types of tumor cells, targeting and inhibiting MDMX are becoming a promising strategy for treating cancers. However, the high degree of structural homology between MDMX and its homologous protein murine double minute 2 (MDM2) is a great challenge for the development of MDMX-targeted therapies. This review introduces the structure, distribution, and regulation of the MDMX, summarizes the structural features and structure-activity relationships (SARs) of MDMX ligands, and focuses on the differences between MDMX and MDM2 in these aspects. Our purpose of this work is to propose potential strategies to achieve the specific targeting of MDMX.
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Affiliation(s)
- Qikun Yin
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Yuemiao Hu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Zhiwen Dong
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Jing Lu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Hongbo Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
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14
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Zhang C, Wang S, Lu X, Zhong W, Tang Y, Huang W, Wu F, Wang X, Wei W, Tang H. POP1 Facilitates Proliferation in Triple-Negative Breast Cancer via m6A-Dependent Degradation of CDKN1A mRNA. RESEARCH (WASHINGTON, D.C.) 2024; 7:0472. [PMID: 39268503 PMCID: PMC11391272 DOI: 10.34133/research.0472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/16/2024] [Accepted: 08/19/2024] [Indexed: 09/15/2024]
Abstract
Triple-negative breast cancer (TNBC) is currently the worst prognostic subtype of breast cancer, and there is no effective treatment other than chemotherapy. Processing of precursors 1 (POP1) is the most substantially up-regulated RNA-binding protein (RBP) in TNBC. However, the role of POP1 in TNBC remains clarified. A series of molecular biological experiments in vitro and in vivo and clinical correlation analyses were conducted to clarify the biological function and regulatory mechanism of POP1 in TNBC. Here, we identified that POP1 is significantly up-regulated in TNBC and associated with poor prognosis. We further demonstrate that POP1 promotes the cell cycle and proliferation of TNBC in vitro and vivo. Mechanistically, POP1 directly binds to the coding sequence (CDS) region of CDKN1A mRNA and degrades it. The degradation process depends on the N6-methyladenosine (m6A) modification at the 497th site of CDKN1A and the recognition of this modification by YTH N6-methyladenosine RNA binding protein 2 (YTHDF2). Moreover, the m6A inhibitor STM2457 potently impaired the proliferation of POP1-overexpressed TNBC cells and improved the sensitivity to paclitaxel. In summary, our findings reveal the pivotal role of POP1 in promoting TNBC proliferation by degrading the mRNA of CDKN1A and that inhibition of m6A with STM2457 is a promising therapeutic strategy for TNBC.
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Affiliation(s)
- Chao Zhang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Sifen Wang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiuqing Lu
- Department of Breast Surgery, Zhongshan City People's Hospital, ZhongShan, China
| | - Wenjing Zhong
- Department of Biomedical and Clinical Sciences (BKV), Linköping University, Linköping, Sweden
| | - Yunyun Tang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangzhou Kangda Vocational Technical College, Guangzhou 510700, China
| | - Weiling Huang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Fengjia Wu
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiumei Wang
- Affiliated Cancer Hospital of Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia, China
| | - Weidong Wei
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Hailin Tang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
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15
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Al-Katat A, Boudreau L, Gagnon E, Assous I, Villeneuve L, Leblanc CA, Bergeron A, Sirois M, El-Hamamsy I, Calderone A. Greater TIMP-1 protein levels and neointimal formation represent sex-dependent cellular events limiting aortic vessel expansion in female rats. IUBMB Life 2024. [PMID: 39264710 DOI: 10.1002/iub.2916] [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: 04/14/2024] [Accepted: 07/22/2024] [Indexed: 09/13/2024]
Abstract
Fragmentation/loss of the structural protein elastin represents the precipitating event translating to aortic expansion and subsequent aneurysm formation. The present study tested the hypothesis that greater protein expression of tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) and neointimal growth secondary to a reduction of medial elastin content represent sex-dependent events limiting aortic vessel expansion in females. TIMP-1 protein levels were higher in the ascending aorta of female versus male patients diagnosed with a bicuspid aortic valve (BAV). The latter paradigm was recapitulated in the aorta of adult male and female rats complemented by greater TIMP-2 expression in females. CaCl2 (0.5 M) treatment of the infrarenal aorta of adult male and female rats increased the in situ vessel diameter and expansion was significantly smaller in females despite a comparable reduction of medial elastin content. The preferential appearance of a neointimal region of the CaCl2-treated infrarenal aorta of female rats may explain in part the smaller in situ expansion and neointimal growth correlated positively with the % change of the in situ diameter. Neointimal formation was secondary to a significant increase in the density of medial/neointimal vascular smooth muscle cells (VSMCs) that re-entered the G2-M phase whereas VSMC cell cycle re-entry was attenuated in the CaCl2-treated infrarenal aorta of male rats. Thus, greater TIMP-1 expression in the aorta of female BAV patients may prevent excessive elastin fragmentation and preferential neointimal growth following CaCl2-treatment of the infrarenal aorta of female rats represents a sex-dependent biological event limiting vessel expansion secondary to a significant loss of the structural protein.
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Affiliation(s)
- Aya Al-Katat
- Montreal Heart Institute, Montréal, Québec, Canada
| | | | | | - Ines Assous
- Montreal Heart Institute, Montréal, Québec, Canada
| | | | | | | | - Martin Sirois
- Montreal Heart Institute, Montréal, Québec, Canada
- Département de Pharmacologie et Physiologie, Université de Montréal, Montréal, Québec, Canada
| | - Ismael El-Hamamsy
- Department of Cardiovascular Surgery, Mount Sinai Hospital, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Angelino Calderone
- Montreal Heart Institute, Montréal, Québec, Canada
- Département de Pharmacologie et Physiologie, Université de Montréal, Montréal, Québec, Canada
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16
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Nam D, Park J, Lee J, Son J, Kim JE. mTOR potentiates senescent phenotypes and primary cilia formation after cisplatin-induced G2 arrest in retinal pigment epithelial cells. Cell Signal 2024; 124:111402. [PMID: 39251051 DOI: 10.1016/j.cellsig.2024.111402] [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: 02/27/2024] [Revised: 09/05/2024] [Accepted: 09/06/2024] [Indexed: 09/11/2024]
Abstract
Cisplatin, a platinum-based anticancer drug, is used to treat several types of cancer. Despite its effectiveness, cisplatin-induced side effects have often been reported. Although cisplatin-induced toxicities, such as apoptosis and/or necrosis, have been well studied, the fate of cells after exposure to sublethal doses of cisplatin needs further elucidation. Treatment with a sublethal dose of cisplatin induced cell cycle arrest at the G2 phase in retinal pigment epithelial cells. Following cisplatin withdrawal, the cells irreversibly exited the cell cycle and became senescent. Notably, the progression from the G2 to the G1 phase occurred without mitotic entry, a phenomenon referred to as mitotic bypass, resulting in the accumulation of cells containing 4N DNA content. Cisplatin-exposed cells exhibited morphological changes associated with senescence, including an enlarged size of cell and nucleus and increased granularity. In addition, the senescent cells possessed primary cilia and persistent DNA lesions. Senescence induced by transient exposure to cisplatin involves mTOR activation. Although transient co-exposure with an mTORC1 inhibitor rapamycin did not prevent mitotic bypass and entry into senescence, it delayed the progression of senescence and attenuated senescent phenotypes, resulting in shorter primary cilia formation. Conclusively, cisplatin induces senescence in retinal pigment epithelial cells by promoting mTOR activation.
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Affiliation(s)
- Dajeong Nam
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jaejung Park
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jaehong Lee
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Juyoung Son
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ja-Eun Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Precision Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pharmacology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
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17
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Szlanka T, Lukacsovich T, Bálint É, Virágh E, Szabó K, Hajdu I, Molnár E, Lin YH, Zvara Á, Kelemen-Valkony I, Méhi O, Török I, Hegedűs Z, Kiss B, Ramasz B, Magdalena LM, Puskás L, Mechler BM, Fónagy A, Asztalos Z, Steinbach G, Žurovec M, Boros I, Kiss I. Dominant suppressor genes of p53-induced apoptosis in Drosophila melanogaster. G3 (BETHESDA, MD.) 2024; 14:jkae149. [PMID: 38985658 PMCID: PMC11373661 DOI: 10.1093/g3journal/jkae149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 02/06/2024] [Accepted: 06/15/2024] [Indexed: 07/12/2024]
Abstract
One of the major functions of programmed cell death (apoptosis) is the removal of cells that suffered oncogenic mutations, thereby preventing cancerous transformation. By making use of a Double-Headed-EP (DEP) transposon, a P element derivative made in our laboratory, we made an insertional mutagenesis screen in Drosophila melanogaster to identify genes that, when overexpressed, suppress the p53-activated apoptosis. The DEP element has Gal4-activatable, outward-directed UAS promoters at both ends, which can be deleted separately in vivo. In the DEP insertion mutants, we used the GMR-Gal4 driver to induce transcription from both UAS promoters and tested the suppression effect on the apoptotic rough eye phenotype generated by an activated UAS-p53 transgene. By DEP insertions, 7 genes were identified, which suppressed the p53-induced apoptosis. In 4 mutants, the suppression effect resulted from single genes activated by 1 UAS promoter (Pka-R2, Rga, crol, and Spt5). In the other 3 (Orct2, Polr2M, and stg), deleting either UAS promoter eliminated the suppression effect. In qPCR experiments, we found that the genes in the vicinity of the DEP insertion also showed an elevated expression level. This suggested an additive effect of the nearby genes on suppressing apoptosis. In the eukaryotic genomes, there are coexpressed gene clusters. Three of the DEP insertion mutants are included, and 2 are in close vicinity of separate coexpressed gene clusters. This raises the possibility that the activity of some of the genes in these clusters may help the suppression of the apoptotic cell death.
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Affiliation(s)
- Tamás Szlanka
- Institute of Biochemistry, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Biology Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Tamás Lukacsovich
- Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Éva Bálint
- Institute of Biochemistry, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Erika Virágh
- Institute of Biochemistry, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Biology Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Kornélia Szabó
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Department of Developmental Genetics, German Cancer Research Centre, 69120 Heidelberg, Germany
| | - Ildikó Hajdu
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Enikő Molnár
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Yu-Hsien Lin
- Biology Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
| | - Ágnes Zvara
- Laboratory of Functional Genomics, Core Facility, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Ildikó Kelemen-Valkony
- Cellular Imaging Laboratory, Core Facility, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Orsolya Méhi
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - István Török
- Department of Developmental Genetics, German Cancer Research Centre, 69120 Heidelberg, Germany
| | - Zoltán Hegedűs
- Bioinformatics Laboratory, Core Facility, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Brigitta Kiss
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Beáta Ramasz
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Laura M Magdalena
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - László Puskás
- Laboratory of Functional Genomics, Core Facility, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Bernard M Mechler
- Department of Developmental Genetics, German Cancer Research Centre, 69120 Heidelberg, Germany
| | - Adrien Fónagy
- Centre for Agricultural Sciences, Plant Protection Institute, 1022 Budapest, Hungary
| | - Zoltán Asztalos
- Institute of Biochemistry, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
- Aktogen Hungary Ltd., 6726 Szeged, Hungary
| | - Gábor Steinbach
- Cellular Imaging Laboratory, Core Facility, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - Michal Žurovec
- Biology Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
| | - Imre Boros
- Institute of Biochemistry, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
| | - István Kiss
- Institute of Genetics, HUN-REN Biological Research Centre, 6726 Szeged, Hungary
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18
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Zhang C, Weng Y, Wang H, Zhan S, Li C, Zheng D, Lin Q. A synergistic effect of triptolide and curcumin on rheumatoid arthritis by improving cell proliferation and inducing cell apoptosis via inhibition of the IL-17/NF-κB signaling pathway. Int Immunopharmacol 2024; 142:112953. [PMID: 39226828 DOI: 10.1016/j.intimp.2024.112953] [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: 02/01/2024] [Revised: 08/01/2024] [Accepted: 08/13/2024] [Indexed: 09/05/2024]
Abstract
Rheumatoid arthritis (RA) is a chronic, progressive, systemic autoimmune disease. While triptolide (TPL) and curcumin (CUR) are known to have multiple beneficial effects on RA, the combined effect of TPL and CUR remains unexplored. This study aimed to investigate their synergistic effect on cell proliferation and apoptosis via the IL-17/NF-κB signaling pathway. The collagen-induced arthritis (CIA) rat model was established, showing severe joint and synovial damage compared to normal rats. Treatment with TPL and CUR reduced the severity of RA in the CIA rat model and alleviated serum inflammatory cytokines, such as rheumatoid factor, IL-17, TNF-α, IL-1β, and IL-6. The elevated levels of IL-17 and NF-κB in CIA rats were also inhibited, and the resistant apoptosis was aggravated by TPL and CUR. In vitro, the improvement of cell proliferation and induction of apoptosis were observed in LPS-stimulated MH7A cells treated with TPL and CUR, associated with the inhibition of the IL-17/NF-κB signaling pathway. Taken together, a synergistic effect of TPL and CUR on RA may involve relieving symptoms, improving excessive proliferation, inducing apoptosis resistance, and inhibiting the IL-17/NF-κB signaling pathway.
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Affiliation(s)
- Chaofeng Zhang
- Department of Hematology and Rheumatology, The Affiliated Hospital of Putian University, Fujian Province, China; School of Basic Medicine, Putian University, Fujian Province, China
| | - Yiyang Weng
- Pharmaceutical and Medical Technology College, Putian University, Fujian Province, China
| | - Haibin Wang
- Pharmaceutical and Medical Technology College, Putian University, Fujian Province, China
| | - Siting Zhan
- School of Basic Medicine, Putian University, Fujian Province, China
| | - Chaoqi Li
- Pharmaceutical and Medical Technology College, Putian University, Fujian Province, China
| | - Donghui Zheng
- Medical Image Center, The Affiliated Hospital of Putian University, Fujian Province, China
| | - Qi Lin
- Department of Pharmacy, The Affiliated Hospital of Putian University, Fujian Province, China.
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19
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Glaviano A, Wander SA, Baird RD, Yap KCH, Lam HY, Toi M, Carbone D, Geoerger B, Serra V, Jones RH, Ngeow J, Toska E, Stebbing J, Crasta K, Finn RS, Diana P, Vuina K, de Bruin RAM, Surana U, Bardia A, Kumar AP. Mechanisms of sensitivity and resistance to CDK4/CDK6 inhibitors in hormone receptor-positive breast cancer treatment. Drug Resist Updat 2024; 76:101103. [PMID: 38943828 DOI: 10.1016/j.drup.2024.101103] [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: 02/28/2024] [Revised: 05/17/2024] [Accepted: 06/10/2024] [Indexed: 07/01/2024]
Abstract
Cell cycle dysregulation is a hallmark of cancer that promotes eccessive cell division. Cyclin-dependent kinase 4 (CDK4) and cyclin-dependent kinase 6 (CDK6) are key molecules in the G1-to-S phase cell cycle transition and are crucial for the onset, survival, and progression of breast cancer (BC). Small-molecule CDK4/CDK6 inhibitors (CDK4/6i) block phosphorylation of tumor suppressor Rb and thus restrain susceptible BC cells in G1 phase. Three CDK4/6i are approved for the first-line treatment of patients with advanced/metastatic hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) BC in combination with endocrine therapy (ET). Though this has improved the clinical outcomes for survival of BC patients, there is no established standard next-line treatment to tackle drug resistance. Recent studies suggest that CDK4/6i can modulate other distinct effects in both BC and breast stromal compartments, which may provide new insights into aspects of their clinical activity. This review describes the biochemistry of the CDK4/6-Rb-E2F pathway in HR+ BC, then discusses how CDK4/6i can trigger other effects in BC/breast stromal compartments, and finally outlines the mechanisms of CDK4/6i resistance that have emerged in recent preclinical studies and clinical cohorts, emphasizing the impact of these findings on novel therapeutic opportunities in BC.
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Affiliation(s)
- Antonino Glaviano
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo 90123, Italy
| | - Seth A Wander
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Richard D Baird
- Cancer Research UK Cambridge Centre, Hills Road, Cambridge CB2 0QQ, UK
| | - Kenneth C-H Yap
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore; NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Hiu Yan Lam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore; NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Masakazu Toi
- School of Medicine, Kyoto University, Kyoto, Japan
| | - Daniela Carbone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo 90123, Italy
| | - Birgit Geoerger
- Gustave Roussy Cancer Center, Department of Pediatric and Adolescent Oncology, Inserm U1015, Université Paris-Saclay, Villejuif, France
| | - Violeta Serra
- Experimental Therapeutics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Robert H Jones
- Cardiff University and Velindre Cancer Centre, Museum Avenue, Cardiff CF10 3AX, UK
| | - Joanne Ngeow
- Lee Kong Chian School of Medicine (LKCMedicine), Nanyang Technological University, Experimental Medicine Building, 636921, Singapore; Cancer Genetics Service (CGS), National Cancer Centre Singapore, 168583, Singapore
| | - Eneda Toska
- Department of Biochemistry and Molecular Biology, Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - Justin Stebbing
- School of Life Sciences, Anglia Ruskin University, Cambridge, UK; Division of Cancer, Imperial College London, Hammersmith Campus, London, UK
| | - Karen Crasta
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117593, Singapore; Healthy Longetivity Translational Program, Yong Loo Lin School of Medicine, National University of Singapore, 117456, Singapore
| | - Richard S Finn
- Department of Oncology, Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Patrizia Diana
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo 90123, Italy
| | - Karla Vuina
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Robertus A M de Bruin
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Uttam Surana
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore; SiNOPSEE Therapeutics Pte Ltd, A⁎STARTCentral, 139955, Singapore
| | - Aditya Bardia
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore; NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore.
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20
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Zeng Q, Jiang T, Wang J. Role of LMO7 in cancer (Review). Oncol Rep 2024; 52:117. [PMID: 38994754 PMCID: PMC11267500 DOI: 10.3892/or.2024.8776] [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: 05/20/2024] [Accepted: 06/17/2024] [Indexed: 07/13/2024] Open
Abstract
Cancer constitutes a multifaceted ailment characterized by the dysregulation of numerous genes and pathways. Among these, LIM domain only 7 (LMO7) has emerged as a significant player in various cancer types, garnering substantial attention for its involvement in tumorigenesis and cancer progression. This review endeavors to furnish a comprehensive discourse on the functional intricacies and mechanisms of LMO7 in cancer, with a particular emphasis on its potential as both a therapeutic target and prognostic indicator. It delves into the molecular attributes of LMO7, its implications in cancer etiology and the underlying mechanisms propelling its oncogenic properties. Furthermore, it underscores the extant challenges and forthcoming prospects in targeting LMO7 for combating cancer.
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Affiliation(s)
- Qun Zeng
- Hunan Key Laboratory of The Research and Development of Novel Pharmaceutical Preparations, The Hunan Provincial University Key Laboratory of The Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, Hunan 410000, P.R. China
- Department of Biochemistry and Molecular Biology, Hengyang Medical School, University of South China, Hengyang, Hunan 421000, P.R. China
| | - Tingting Jiang
- Hunan Key Laboratory of The Research and Development of Novel Pharmaceutical Preparations, The Hunan Provincial University Key Laboratory of The Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, Hunan 410000, P.R. China
- Department of Clinical Laboratory, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421000, P.R. China
| | - Jing Wang
- Hunan Key Laboratory of The Research and Development of Novel Pharmaceutical Preparations, The Hunan Provincial University Key Laboratory of The Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, Hunan 410000, P.R. China
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21
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Jagadeesan D, Sathasivam KV, Fuloria NK, Balakrishnan V, Khor GH, Ravichandran M, Solyappan M, Fuloria S, Gupta G, Ahlawat A, Yadav G, Kaur P, Husseen B. Comprehensive insights into oral squamous cell carcinoma: Diagnosis, pathogenesis, and therapeutic advances. Pathol Res Pract 2024; 261:155489. [PMID: 39111016 DOI: 10.1016/j.prp.2024.155489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/18/2024] [Accepted: 07/24/2024] [Indexed: 08/18/2024]
Abstract
Oral squamous cell carcinoma (OSCC) is considered the most common type of head and neck squamous cell carcinoma (HNSCC) as it holds 90 % of HNSCC cases that arise from multiple locations in the oral cavity. The last three decades witnessed little progress in the diagnosis and treatment of OSCC the aggressive tumor. However, in-depth knowledge about OSCC's pathogenesis, staging & grading, hallmarks, and causative factors is a prime requirement in advanced diagnosis and treatment for OSCC patients. Therefore present review was intended to comprehend the OSCCs' prevalence, staging & grading, molecular pathogenesis including premalignant stages, various hallmarks, etiology, diagnostic methods, treatment (including FDA-approved drugs with the mechanism of action and side effects), and theranostic agents. The current review updates that for a better understanding of OSCC progress tumor-promoting inflammation, sustained proliferative signaling, and growth-suppressive signals/apoptosis capacity evasion are the three most important hallmarks to be considered. This review suggests that among all the etiology factors the consumption of tobacco is the major contributor to the high incidence rate of OSCC. In OSCC diagnosis biopsy is considered the gold standard, however, toluidine blue staining is the easiest and non-invasive method with high accuracy. Although there are various therapeutic agents available for cancer treatment, however, a few only are approved by the FDA specifically for OSCC treatment. The present review recommends that among all available OSCC treatments, the antibody-based CAR-NK is a promising therapeutic approach for future cancer treatment. Presently review also suggests that theranostics have boosted the advancement of cancer diagnosis and treatment, however, additional work is required to refine the role of theranostics in combination with different modalities in cancer treatment.
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Affiliation(s)
- Dharshini Jagadeesan
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong, Kedah, Malaysia
| | - Kathiresan V Sathasivam
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong, Kedah, Malaysia
| | | | - Venugopal Balakrishnan
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia,11800 USM, Pulau Pinang, Malaysia
| | - Goot Heah Khor
- Centre of Preclinical Science Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, SungaiBuloh, Selangor 47000, Malaysia; Oral and Maxillofacial Cancer Research Group, Faculty of Dentistry, Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, Selangor 47000, Malaysia
| | - Manickam Ravichandran
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong, Kedah, Malaysia
| | - Maheswaran Solyappan
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong, Kedah, Malaysia
| | | | - Gaurav Gupta
- Centre for Research Impact & Outcome-Chitkara College of Pharmacy, Chitkara University, Punjab, India; Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Abhilasha Ahlawat
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Geeta Yadav
- Chandigarh Pharmacy College, Chandigarh Group of Colleges-Jhanjeri, Mohali, Punjab 140307, India
| | - Pandeep Kaur
- National Institute of Medical Sciences, NIMS University Rajasthan, Jaipur, India
| | - Beneen Husseen
- Medical Laboratory Technique College, the Islamic University, Najaf, Iraq; Medical Laboratory Technique College, the Islamic University of Al Diwaniyah, Al Diwaniyah, Iraq
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22
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Zhao S, Wang C, Luo H, Li F, Wang Q, Xu J, Huang Z, Liu W, Zhang W. A role for Retinoblastoma 1 in hindbrain morphogenesis by regulating GBX family. J Genet Genomics 2024; 51:900-910. [PMID: 38570112 DOI: 10.1016/j.jgg.2024.03.008] [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: 03/22/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
The hindbrain, which develops from the anterior end of the neural tube expansion, can differentiate into the metencephalon and myelencephalon, with varying sizes and functions. The midbrain-hindbrain boundary (MHB) and hindbrain myelencephalon/ventral midline (HMVM) are known to be the source of the progenitors for the anterior hindbrain and myelencephalon, respectively. However, the molecular networks regulating hindbrain morphogenesis in these structures remain unclear. In this study, we show that retinoblastoma 1 (rb1) is highly expressed at the MHB and HMVM in zebrafish. Knocking out rb1 in mice and zebrafish results in an enlarged hindbrain due to hindbrain neuronal hyperproliferation. Further study reveals that Rb1 controls the hindbrain morphogenesis by suppressing the expression of Gbx1/Gbx2, essential transcription factors for hindbrain development, through its binding to E2f3/Hdac1, respectively. Interestingly, we find that Gbx1 and Gbx2 are expressed in different types of hindbrain neurons, suggesting distinct roles in hindbrain morphogenesis. In summary, our study clarifies the specific role of RB1 in hindbrain neural cell proliferation and morphogenesis by regulating the E2f3-Gbx1 axis and the Hdac1-Gbx2 axis. These findings provide a research paradigm for exploring the differential proliferation of neurons in various brain regions.
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Affiliation(s)
- Shuang Zhao
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Chen Wang
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Haiping Luo
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Feifei Li
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Qiang Wang
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Jin Xu
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Zhibin Huang
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Wei Liu
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China.
| | - Wenqing Zhang
- The Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China; Greater Bay Biomedical Innocenter, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China.
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23
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Gu W, Wang M, Wu Z, Cai Y. Ubiquitination of p21 by E3 ligase RNF135 promotes the proliferation of human glioblastoma cells. Oncol Lett 2024; 28:406. [PMID: 38988442 PMCID: PMC11234804 DOI: 10.3892/ol.2024.14539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/31/2024] [Indexed: 07/12/2024] Open
Abstract
Glioblastoma multiforme (GBM) is a highly heterogeneous tumor of the central nervous system with a high mortality rate. The upregulation of RING finger protein 135 (RNF135), an E3 ligase, has been observed in GBM, but the associated mechanisms have not been fully elucidated. The aim of the present study was to identify the substrate of RNF135 and study its functions in GBM. Bioinformatics analyses were performed. In addition, RNF135 was overexpressed or knocked down in human U87 and U251 GBM cells, and the effect on cell proliferation was analyzed using Cell Counting Kit-8 and colony formation assays. Furthermore, the interaction of RNF135 with its potential substrate was analyzed using glutathione S-transferase, yeast two-hybrid, immunoprecipitation (IP), co-IP and immunoblotting assays. Bioinformatics analysis indicated that RNF135 serves as a marker of poor prognosis in GBM. The overexpression of RNF135 was demonstrated to promote the proliferation of GBM cells, while the knockdown of RNF135 inhibited GBM cell growth. In addition, the results of the interaction experiments indicate that RNF135 interacts with p21 and mediates the degradation of p21 by ubiquitination. The major site of RNF135-mediated p21 ubiquitination was identified as K163. Further experiments demonstrated that RNF135 promotes the proliferation of GBM cells mainly via p21. In summary, these findings suggest that RNF135 has potential as a therapeutic target for the treatment of GBM.
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Affiliation(s)
- Weiting Gu
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Ming Wang
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Zhebao Wu
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Yu Cai
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
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24
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Jiang Z, Cheng H, Qian X, Tu J, Fan C, Pan Y, Lin Z, Chen J, Wang X, Zhang J. The role and mechanism of engineered nanovesicles derived from hair follicle mesenchymal stem cells in the treatment of UVB-induced skin photoaging. J Cosmet Dermatol 2024; 23:3005-3020. [PMID: 38769897 DOI: 10.1111/jocd.16336] [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: 07/11/2023] [Revised: 03/06/2024] [Accepted: 04/10/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND Extracellular vesicles (EVs) derived from mesenchymal stem cells (MSCs) are effective in the treatment of skin photoaging; however, their low yield and functional decline with passage progression limit their clinical application. Cell-derived nanovesicles (CNVs) are potential alternatives that can address the limitations of EVs derived from MSCs and are conducive to clinical transformations. Hair follicle mesenchymal stem cells (HFMSCs), a type of MSCs, have demonstrated the function of repairing skin tissues; nevertheless, the efficacy of CNVs from HFMSCs (HFMSC-CNVs) in the treatment of skin photoaging remains unclear. Therefore, ultraviolet radiation B (UVB)-induced photoaging nude mice and human dermal fibroblasts (HDFs) were used as experimental models to investigate the therapeutic effects of HFMSC-CNVs in photoaging models. METHODS HFMSC-CNVs were successfully prepared using the mechanical extrusion method. UVB-induced nude mice and HDFs were used as experimental models of photoaging. Multiple approaches, including hematoxylin-eosin and Masson staining, immunohistochemistry, immunofluorescence, detection of reactive oxygen species (ROS), flow cytometry, western blotting, and other experimental methods, were combined to investigate the possible effects and mechanisms of HFMSC-CNVs in the treatment of skin photoaging. RESULTS In the nude mouse model of skin photoaging, treatment with HFMSC-CNVs reduced UVB-induced skin wrinkles (p < 0.05) and subcutaneous capillary dilation, alleviated epidermis thickening (p < 0.001), and dermal thinning (p < 0.001). Furthermore, HFMSC-CNVs upregulated proliferating cell nuclear antigen (PCNA) expression (p < 0.05) and decreased the levels of ROS, β-galactosidase (β-Gal), and CD86 (p < 0.01). In vitro experiments, treatment with HFMSC-CNVs enhanced the cellular activity of UVB-exposed HDFs (p < 0.05), and reduced ROS levels and the percentage of senescent cells (p < 0.001), and alleviated cell cycle arrest (p < 0.001). HFMSC-CNVs upregulated the expression of Collagen I (Col I), SMAD2/3, transforming growth factor beta (TGF-β), catalase (CAT), glutathione peroxidase-1 (GPX-1), and superoxide dismutase-1 (SOD-1) (p < 0.05) and downregulated the expression of cycle suppressor protein (p53), cell cycle suppressor protein (p21), and matrix metalloproteinase 3 (MMP3) (p < 0.05). CONCLUSION Conclusively, the anti-photoaging properties of HFMSC-CNVs were confirmed both in vivo and in vitro. HFMSC-CNVs exert anti-photoaging effects by alleviating cell cycle arrest, decreasing cellular senescence and macrophage infiltration, promoting cell proliferation and extracellular matrix (ECM) production, and reducing oxidative stress by increasing the activity of antioxidant enzymes.
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Affiliation(s)
- Zhounan Jiang
- Affiliated Hangzhou First People's Hospital, School Of Medicine, Westlake University, Hangzhou, China
- The Second Affiliated Hospital Zhejiang University School Of Medicine, Hangzhou, China
| | - Hanxiao Cheng
- Affiliated Hangzhou First People's Hospital, School Of Medicine, Westlake University, Hangzhou, China
| | - Xifei Qian
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jingyi Tu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chongxiang Fan
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yirui Pan
- Affiliated Hangzhou First People's Hospital, School Of Medicine, Westlake University, Hangzhou, China
| | - Zhiwei Lin
- Zhejiang Healthfuture Biomedicine Co., Ltd., Hangzhou, China
| | - Jinyang Chen
- Zhejiang Healthfuture Biomedicine Co., Ltd., Hangzhou, China
| | - Xiangsheng Wang
- Affiliated Hangzhou First People's Hospital, School Of Medicine, Westlake University, Hangzhou, China
| | - Jufang Zhang
- Affiliated Hangzhou First People's Hospital, School Of Medicine, Westlake University, Hangzhou, China
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25
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Wang D, Chen K, Wang Z, Wu H, Li Y. Research progress on interferon and cellular senescence. FASEB J 2024; 38:e70000. [PMID: 39157951 DOI: 10.1096/fj.202400808rr] [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: 04/11/2024] [Revised: 07/31/2024] [Accepted: 08/06/2024] [Indexed: 08/20/2024]
Abstract
Since the 12 major signs of aging were revealed in 2023, people's interpretation of aging will go further, which is of great significance for understanding the occurrence, development, and intervention in the aging process. As one of the 12 major signs of aging, cellular senescence refers to the process in which the proliferation and differentiation ability of cells decrease under stress stimulation or over time, often manifested as changes in cell morphology, cell cycle arrest, and decreased metabolic function. Interferon (IFN), as a secreted ligand for specific cell surface receptors, can trigger the transcription of interferon-stimulated genes (ISGs) and play an important role in cellular senescence. In addition, IFN serves as an important component of SASP, and the activation of the IFN signaling pathway has been shown to contribute to cell apoptosis and senescence. It is expected to delay cellular senescence by linking IFN with cellular senescence and studying the effects of IFN on cellular senescence and its mechanism. This article provides a review of the research on the relationship between IFN and cellular senescence by consulting relevant literature.
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Affiliation(s)
- Da Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Kaixian Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Zheng Wang
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. China
- National Key Laboratory of Chinese Medicine Modernization, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing, P.R. China
| | - Huali Wu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Yiming Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
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Rivas V, González-Muñoz T, Albitre Á, Lafarga V, Delgado-Arévalo C, Mayor F, Penela P. GRK2-mediated AKT activation controls cell cycle progression and G2 checkpoint in a p53-dependent manner. Cell Death Discov 2024; 10:385. [PMID: 39198399 PMCID: PMC11358448 DOI: 10.1038/s41420-024-02143-8] [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: 04/04/2024] [Revised: 08/03/2024] [Accepted: 08/09/2024] [Indexed: 09/01/2024] Open
Abstract
Cell cycle checkpoints, activated by stressful events, halt the cell cycle progression, and prevent the transmission of damaged DNA. These checkpoints prompt cell repair but also trigger cell death if damage persists. Decision-making between these responses is multifactorial and context-dependent, with the tumor suppressor p53 playing a central role. In many tumor cells, p53 alterations lead to G1/S checkpoint loss and the weakening of the G2 checkpoint, rendering cell viability dependent on the strength of the latter through mechanisms not fully characterized. Cells with a strong pro-survival drive can evade cell death despite substantial DNA lesions. Deciphering the integration of survival pathways with p53-dependent and -independent mechanisms governing the G2/M transition is crucial for understanding G2 arrest functionality and predicting tumor cell response to chemotherapy. The serine/threonine kinase GRK2 emerges as a signaling node in cell cycle modulation. In cycling cells, but not in G2 checkpoint-arrested cells, GRK2 protein levels decline during G2/M transition through a process triggered by CDK2-dependent phosphorylation of GRK2 at the S670 residue and Mdm2 ubiquitination. We report now that this downmodulation in G2 prevents the unscheduled activation of the PI3K/AKT pathway, allowing cells to progress into mitosis. Conversely, higher GRK2 levels lead to tyrosine phosphorylation by the kinase c-Abl, promoting the direct association of GRK2 with the p85 regulatory subunit of PI3K and AKT activation in a GRK2 catalytic-independent manner. Hyperactivation of AKT is conditioned by p53's scaffolding function, triggering FOXO3a phosphorylation, impaired Cyclin B1 accumulation, and CDK1 activation, causing a G2/M transition delay. Upon G2 checkpoint activation, GRK2 potentiates early arrest independently of p53 through AKT activation. However, its ability to overcome the G2 checkpoint in viable conditions depends on p53. Our results suggest that integrating the GRK2/PI3K/AKT axis with non-canonical functions of p53 might confer a survival advantage to tumor cells.
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Affiliation(s)
- Verónica Rivas
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
| | - Teresa González-Muñoz
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
| | - Ángela Albitre
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
| | - Vanesa Lafarga
- Department of Molecular Oncology, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Cristina Delgado-Arévalo
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
| | - Federico Mayor
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
- CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain
| | - Petronila Penela
- Departamento de Biología Molecular, IUBM-UAM and Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Madrid, Spain.
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.
- CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain.
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Liu C, Dou X, Zhao Y, Zhang L, Zhang L, Dai Q, Liu J, Wu T, Xiao Y, He C. IGF2BP3 promotes mRNA degradation through internal m 7G modification. Nat Commun 2024; 15:7421. [PMID: 39198433 PMCID: PMC11358264 DOI: 10.1038/s41467-024-51634-w] [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: 08/24/2023] [Accepted: 08/11/2024] [Indexed: 09/01/2024] Open
Abstract
Recent studies have suggested that mRNA internal m7G and its writer protein METTL1 are closely related to cell metabolism and cancer regulation. Here, we identify that IGF2BP family proteins IGF2BP1-3 can preferentially bind internal mRNA m7G. Such interactions, especially IGF2BP3 with m7G, could promote the degradation of m7G target transcripts in cancer cells. IGF2BP3 is more responsive to changes of m7G modification, while IGF2BP1 prefers m6A to stabilize the bound transcripts. We also demonstrate that p53 transcript, TP53, is m7G-modified at its 3'UTR in cancer cells. In glioblastoma, the methylation level and the half lifetime of the modified transcript could be modulated by tuning IGF2BP3, or by site-specific targeting of m7G through a dCas13b-guided system, resulting in modulation of cancer progression and chemosensitivity.
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Affiliation(s)
- Chang Liu
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
- Department of Genetics, School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Xiaoyang Dou
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Yutao Zhao
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Linda Zhang
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Lisheng Zhang
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Qing Dai
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Jun Liu
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
- Beijing Advanced Center of RNA Biology (BEACON), Peking University, Beijing, 100871, China
| | - Tong Wu
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Yu Xiao
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA
| | - Chuan He
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, 60637, USA.
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, 60637, USA.
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Ahmadi SS, Bagherzadeh O, Sargazi M, Kalantar F, Najafi MAE, Vahedi MM, Afshari AR, Sahebkar A. Harnessing the therapeutic potential of phytochemicals in neuroblastoma. Biofactors 2024. [PMID: 39189819 DOI: 10.1002/biof.2115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 07/31/2024] [Indexed: 08/28/2024]
Abstract
Neuroblastomas are the most common solid tumors outside of the brain that originate from immature neural crest cells, accounting for about 10% of all pediatric malignancies. The treatment for neuroblastomas involves a multimodal schedule, including surgery, radiation, chemotherapy, and immunotherapy. All these modalities are limited by side effects that might be severe, poor prognosis, and a high risk of recurrence. In the quest for additional therapeutic approaches, phytochemicals have attracted attention owing to their reported antitumor properties, safety, and multimechanistic mode of action. Several studies have used plant-derived bioactive compounds such as phenolics and flavonoids, suggesting modulation of biomolecules and signal transduction pathways involved in neuroblastoma. We reviewed the findings of recent preclinical and clinical studies demonstrating the effects of phytochemicals on neuroblastoma, shedding light on their molecular mechanism of action and potential therapeutic applications.
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Affiliation(s)
- Seyed Sajad Ahmadi
- Department of Ophthalmology, Khatam-Ol-Anbia Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Omid Bagherzadeh
- Department of Ophthalmology, Khatam-Ol-Anbia Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Sargazi
- Department of Ophthalmology, Alzahra Eye Hospital, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Farnaz Kalantar
- Departman of Pharmacology, Faculty of Pharmacy and Pharmaceutical sciences, Islamic Azad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Amin Elahi Najafi
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, New York, USA
| | - Mohammad Mahdi Vahedi
- Department of Pharmacology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Amir R Afshari
- Department of Basic Sciences, Faculty of Medicine, Mashhad Medical Sciences, Islamic Azad University, Mashhad, Iran
- Department of Physiology and Pharmacology, Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Amirhossein Sahebkar
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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29
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Wei Y, Mou S, Yang Q, Liu F, Cooper ME, Chai Z. To target cellular senescence in diabetic kidney disease: the known and the unknown. Clin Sci (Lond) 2024; 138:991-1007. [PMID: 39139135 PMCID: PMC11327223 DOI: 10.1042/cs20240717] [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: 04/12/2024] [Revised: 07/07/2024] [Accepted: 07/29/2024] [Indexed: 08/15/2024]
Abstract
Cellular senescence represents a condition of irreversible cell cycle arrest, characterized by heightened senescence-associated beta-galactosidase (SA-β-Gal) activity, senescence-associated secretory phenotype (SASP), and activation of the DNA damage response (DDR). Diabetic kidney disease (DKD) is a significant contributor to end-stage renal disease (ESRD) globally, with ongoing unmet needs in terms of current treatments. The role of senescence in the pathogenesis of DKD has attracted substantial attention with evidence of premature senescence in this condition. The process of cellular senescence in DKD appears to be associated with mitochondrial redox pathways, autophagy, and endoplasmic reticulum (ER) stress. Increasing accumulation of senescent cells in the diabetic kidney not only leads to an impaired capacity for repair of renal injury, but also the secretion of pro-inflammatory and profibrotic cytokines and growth factors causing inflammation and fibrosis. Current treatments for diabetes exhibit varying degrees of renoprotection, potentially via mitigation of senescence in the diabetic kidney. Targeting senescent cell clearance through pharmaceutical interventions could emerge as a promising strategy for preventing and treating DKD. In this paper, we review the current understanding of senescence in DKD and summarize the possible therapeutic interventions relevant to senescence in this field.
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Affiliation(s)
- Yuehan Wei
- Department of Diabetes, School of Translational Medicine, Monash University, Melbourne, Australia
- Department of Nephrology, Molecular Cell Laboratory for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Ren Ji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shan Mou
- Department of Nephrology, Molecular Cell Laboratory for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Ren Ji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Yang
- Department of Nephrology, Laboratory of Diabetic Kidney Disease, Kidney Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Fang Liu
- Department of Nephrology, Laboratory of Diabetic Kidney Disease, Kidney Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Mark E Cooper
- Department of Diabetes, School of Translational Medicine, Monash University, Melbourne, Australia
| | - Zhonglin Chai
- Department of Diabetes, School of Translational Medicine, Monash University, Melbourne, Australia
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Valdez-Salazar F, Jiménez-Del Rio LA, Padilla-Gutiérrez JR, Valle Y, Muñoz-Valle JF, Valdés-Alvarado E. Advances in Melanoma: From Genetic Insights to Therapeutic Innovations. Biomedicines 2024; 12:1851. [PMID: 39200315 PMCID: PMC11351162 DOI: 10.3390/biomedicines12081851] [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: 06/14/2024] [Revised: 08/08/2024] [Accepted: 08/13/2024] [Indexed: 09/02/2024] Open
Abstract
Advances in melanoma research have unveiled critical insights into its genetic and molecular landscape, leading to significant therapeutic innovations. This review explores the intricate interplay between genetic alterations, such as mutations in BRAF, NRAS, and KIT, and melanoma pathogenesis. The MAPK and PI3K/Akt/mTOR signaling pathways are highlighted for their roles in tumor growth and resistance mechanisms. Additionally, this review delves into the impact of epigenetic modifications, including DNA methylation and histone changes, on melanoma progression. The tumor microenvironment, characterized by immune cells, stromal cells, and soluble factors, plays a pivotal role in modulating tumor behavior and treatment responses. Emerging technologies like single-cell sequencing, CRISPR-Cas9, and AI-driven diagnostics are transforming melanoma research, offering precise and personalized approaches to treatment. Immunotherapy, particularly immune checkpoint inhibitors and personalized mRNA vaccines, has revolutionized melanoma therapy by enhancing the body's immune response. Despite these advances, resistance mechanisms remain a challenge, underscoring the need for combined therapies and ongoing research to achieve durable therapeutic responses. This comprehensive overview aims to highlight the current state of melanoma research and the transformative impacts of these advancements on clinical practice.
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Affiliation(s)
| | | | | | | | | | - Emmanuel Valdés-Alvarado
- Centro Universitario de Ciencias de la Salud, Instituto de Investigación en Ciencias Biomédicas (IICB), Universidad de Guadalajara, Guadalajara 44340, Mexico; (F.V.-S.)
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31
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Mucignat G, Montanucci L, Elgendy R, Giantin M, Laganga P, Pauletto M, Mutinelli F, Vascellari M, Leone VF, Dacasto M, Granato A. A Whole-Transcriptomic Analysis of Canine Oral Melanoma: A Chance to Disclose the Radiotherapy Effect and Outcome-Associated Gene Signature. Genes (Basel) 2024; 15:1065. [PMID: 39202425 PMCID: PMC11353338 DOI: 10.3390/genes15081065] [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: 07/18/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/03/2024] Open
Abstract
Oral melanoma (OM) is the most common malignant oral tumour among dogs and shares similarities with human mucosal melanoma (HMM), validating the role of canine species as an immunocompetent model for cancer research. In both humans and dogs, the prognosis is poor and radiotherapy (RT) represents a cornerstone in the management of this tumour, either as an adjuvant or a palliative treatment. In this study, by means of RNA-seq, the effect of RT weekly fractionated in 9 Gray (Gy), up to a total dose of 36 Gy (4 weeks), was evaluated in eight dogs affected by OM. Furthermore, possible transcriptomic differences in blood and biopsies that might be associated with a longer overall survival (OS) were investigated. The immune response, glycosylation, cell adhesion, and cell cycle were the most affected pathways by RT, while tumour microenvironment (TME) composition and canonical and non-canonical WNT pathways appeared to be modulated in association with OS. Taking these results as a whole, this study improved our understanding of the local and systemic effect of RT, reinforcing the pivotal role of anti-tumour immunity in the control of canine oral melanoma (COM).
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Affiliation(s)
- Greta Mucignat
- Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro, 35020 Padua, Italy; (G.M.); (M.G.); (M.P.)
| | - Ludovica Montanucci
- McGovern Medical School and Center for Neurogenomics, UTHealth, University of Texas Houston, Houston, TX 77030, USA;
| | - Ramy Elgendy
- Discovery Sciences, Centre for Genomics Research, AstraZeneca, 411 10 Gothenburg, Sweden;
| | - Mery Giantin
- Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro, 35020 Padua, Italy; (G.M.); (M.G.); (M.P.)
| | - Paola Laganga
- Anicura—Centro Oncologico Veterinario, Sasso Marconi, 40037 Bologna, Italy; (P.L.); (V.F.L.)
| | - Marianna Pauletto
- Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro, 35020 Padua, Italy; (G.M.); (M.G.); (M.P.)
| | - Franco Mutinelli
- Veterinary and Public Health Institute, Legnaro, 35020 Padua, Italy; (F.M.); (M.V.)
| | - Marta Vascellari
- Veterinary and Public Health Institute, Legnaro, 35020 Padua, Italy; (F.M.); (M.V.)
| | - Vito Ferdinando Leone
- Anicura—Centro Oncologico Veterinario, Sasso Marconi, 40037 Bologna, Italy; (P.L.); (V.F.L.)
| | - Mauro Dacasto
- Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro, 35020 Padua, Italy; (G.M.); (M.G.); (M.P.)
| | - Anna Granato
- Veterinary and Public Health Institute, Legnaro, 35020 Padua, Italy; (F.M.); (M.V.)
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Liu K, Wu S, Cui Y, Tao X, Li Y, Xiao X. Trophoblast fusion in fetal growth restriction is inhibited by CTGF in a cell-cycle-dependent manner. J Mol Histol 2024:10.1007/s10735-024-10239-9. [PMID: 39122896 DOI: 10.1007/s10735-024-10239-9] [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: 02/03/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024]
Abstract
Fetal growth restriction (FGR) is a relatively common complication of pregnancy, and insufficient syncytialization in the placenta may play an important role in the pathogenesis of FGR. However, the mechanism of impaired formation of the syncytiotrophoblast layer in FGR patients requires further exploration. In the present study, we demonstrated that the level of syncytialization was decreased in FGR patient placentas, while the expression of connective tissue growth factor (CTGF) was significantly upregulated. CTGF was found to inhibit trophoblast fusion via regulating cell cycle progress of BeWo cells. Furthermore, we found that CTGF negatively regulates cell cycle arrest in a p21-dependent manner as overexpression of p21 could rescue the impaired syncytialization induced by CTGF-overexpression. Besides, we also identified that CTGF inhibits the expression of p21 through ITGB4/PI3K/AKT signaling pathway. Our study provided a new insight for elucidating the pathogenic mechanism of FGR and a novel idea for the clinical therapy of FGR.
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Affiliation(s)
- Ketong Liu
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China
| | - Suwen Wu
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430050, China
| | - Yutong Cui
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China
| | - Xiang Tao
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China
| | - Yanhong Li
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China.
| | - Xirong Xiao
- Obstetrics and Gynecology Hospital of Fudan University, Fangxie Road 419, Shanghai, 200011, China.
- Kashi Prefecture Second People's Hospital, Jiankang Road 1, Kashgar, 844000, China.
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Ma QY, Liu YC, Zhang Q, Yi WD, Sun Y, Gao XD, Zhao XT, Wang HW, Lei K, Luo WJ. Integrating network pharmacology, molecular docking and experimental verification to reveal the mechanism of artesunate in inhibiting choroidal melanoma. Front Pharmacol 2024; 15:1448381. [PMID: 39185308 PMCID: PMC11341487 DOI: 10.3389/fphar.2024.1448381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 07/24/2024] [Indexed: 08/27/2024] Open
Abstract
Background Artesunate (ART), a natural compound derived from Artemisia annua, has shown promising clinical potentials in the treatment of various tumors, but the exact mechanism is unclear. Choroidal melanoma (CM) is a major malignant ocular tumor in adults, known for its significant malignancy and poor prognosis, with limited efficacy in current treatments. This study explored the anti-CM effects and mechanisms of ART using a combination of network pharmacology, molecular docking and experimental validation. Methods Potential targets of ART were screened in PubChem, Swiss Target Prediction and Traditional Chinese Medicine Systems Pharmacology (TCMSP) Database Analysis Platform databases, while target genes related to CM prognosis were selected from Online Mendelian Inheritance in Man (OMIM), GeneCards and DisGeNET databases. The intersection of these two groups of datasets yielded the target genes of ART involved in CM. Protein-protein interaction (PPI) network analysis of the intersecting targets, as well as Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, were conducted to identify core targets and critical pathways. Molecular docking methods were performed to predict the binding interactions between ART and core targets. The effects of ART on CM were evaluated through CCK8, colony formation, transwell, as well as flow cytometry assays to detect apoptosis, cell cycle, reactive oxygen species (ROS). Western blot (WB) assays were conducted to investigate the impact of ART on key proteins and pathways associated with CM. Finally, in vivo assays were conducted to further validate the effects of ART on subcutaneous tumors in nude mice. Results Research has shown that key pathways and core targets for ART in treating CM were identified through a network pharmacology approach. Molecular docking results verified the strong binding affinity between ART and these core targets. The analysis and predicted results indicated that ART primarily exerted its effects on CM through various tumor-related pathways like apoptosis. The assays in vitro confirmed that ART significantly inhibited the proliferation and migration of CM cells. This was achieved by promoting apoptosis through activation of the p53 signaling pathway, causing cell cycle arrest at the G0/G1 phase by inhibiting the PI3K/AKT/mTOR signaling pathway and increasing the intracellular level of ROS by activating the NRF2/HO-1 signaling pathway. Additionally, the assays in vivo further validated the significant proliferation-inhibitory effect of ART on CM. Conclusion This study, making the initial exploration, illustrated through network pharmacology combined with molecular docking and in vitro/in vivo assays, confirmed that ART exerted potential anti-cancer effects on CM by promoting apoptosis, inducing cell cycle arrest and increasing intracellular levels of ROS. These findings suggested that ART held significant therapeutic potential for CM.
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Affiliation(s)
- Qing-yue Ma
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yi-chong Liu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qian Zhang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wen-dan Yi
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ying Sun
- Ophthalmology Department, Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Hospital), Qingdao, China
| | - Xiao-di Gao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xin-tong Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hao-wen Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ke Lei
- Tumor Immunology and Cytotherapy of Medical Research Center and Key Laboratory of Pancreatic Disease Clinical Research (Shandong Province), The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wen-juan Luo
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Yang J, Zhang L, Zhu B, Wu H, Peng M. Immunogenomic profiles and therapeutic options of the pan-programmed cell death-related lncRNA signature for patients with bladder cancer. Sci Rep 2024; 14:18500. [PMID: 39122807 PMCID: PMC11316077 DOI: 10.1038/s41598-024-68859-w] [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: 03/28/2023] [Accepted: 07/29/2024] [Indexed: 08/12/2024] Open
Abstract
Programmed cell death (PCD) is a process that eliminates infected, damaged, or possibly neoplastic cells to sustain homeostatic multicellular organisms. Although long noncoding RNAs (lncRNAs) are involved in various types of PCD and regulate tumor growth, invasion, and migration, the role of PCD-related lncRNAs in bladder cancer still lacks systematic exploration. In this research, we integrated multiple types of PCD as pan-PCD and identified eight pan-PCD-related lncRNAs (LINC00174, HCP5, HCG27, UCA1, SNHG15, GHRLOS, CYB561D2, and AGAP11). Then, we generated a pan-PCD-related lncRNA prognostic signature (PPlncPS) with excellent predictive power and reliability, which performed equally well in the E-MTAB-4321 cohort. In comparison with the low-PPlncPS score group, the high-PPlncPS score group had remarkably higher levels of angiogenesis, matrix, cancer-associated fibroblasts, myeloid cell traffic, and protumor cytokine signatures. In addition, the low-PPlncPS score group was positively correlated with relatively abundant immune cell infiltration, upregulated expression levels of immune checkpoints, and high tumor mutation burden (TMB). Immunogenomic profiles revealed that patients with both low PPlncPS scores and high TMB had the best prognosis and may benefit from immune checkpoint inhibitors. Furthermore, for patients with high PPlncPS scores, docetaxel, staurosporine, and luminespib were screened as potential therapeutic candidates. In conclusion, we generated a pan-PCD-related lncRNA signature, providing precise and individualized prediction for clinical prognosis and some new insights into chemotherapy and immune checkpoint inhibitor therapy for bladder cancer.
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Affiliation(s)
- Jia Yang
- Department of Ophthalmology, the Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Lusi Zhang
- Department of Ophthalmology, the Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Bin Zhu
- Department of Urology, the Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Hongtao Wu
- Department of Urology, the Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
| | - Mou Peng
- Department of Urology, the Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
- Key Laboratory of Diabetes Immunology (Central South University), Ministry of Education, National Clinical Research Center for Metabolic Disease, Changsha, 410011, Hunan, China.
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Eriten B, Kucukler S, Gur C, Ayna A, Diril H, Caglayan C. Protective Effects of Carvacrol on Mercuric Chloride-Induced Lung Toxicity Through Modulating Oxidative Stress, Apoptosis, Inflammation, and Autophagy. ENVIRONMENTAL TOXICOLOGY 2024. [PMID: 39105374 DOI: 10.1002/tox.24397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/10/2024] [Accepted: 07/23/2024] [Indexed: 08/07/2024]
Abstract
Mercuric chloride (HgCl2) is extremely toxic to both humans and animals. It could be absorbed via ingestion, inhalation, and skin contact. Exposure to HgCl2 can cause severe health effects, including damages to the gastrointestinal, respiratory, and central nervous systems. The purpose of this work was to explore if carvacrol (CRV) could protect rats lungs from damage caused by HgCl2. Intraperitoneal injections of HgCl2 at a dose of 1.23 mg/kg body weight were given either alone or in conjunction with oral CRV administration at doses of 25 and 50 mg/kg body weight for 7 days. The study included biochemical and histological techniques to examine the lung tissue's oxidative stress, apoptosis, inflammation, and autophagy processes. HgCl2-induced reductions in GSH levels and antioxidant enzymes (SOD, CAT, and GPx) activity were enhanced by CRV co-administration. Furthermore, MDA levels were lowered by CRV. The inflammatory mediators NF-κB, IκB, NLRP3, TNF-α, IL-1β, IL6, COX-2, and iNOS were all reduced by CRV. When exposed to HgCl2, the levels of apoptotic Bax, caspase-3, Apaf1, p53, caspase-6, and caspase-9 increased, but the levels of antiapoptotic Bcl-2 reduced after CRV treatment. CRV decreased levels of Beclin-1, LC3A, and LC3B, which in turn decreased HgCl2-induced autophagy damage. After HgCl2 treatment, higher pathological damage was observed in terms of alveolar septal thickening, congestion, edema, and inflammatory cell infiltration compared to the control group while CRV ameliorated these effects. Consequently, by preventing HgCl2-induced increases in oxidative stress and the corresponding inflammation, autophagy, apoptosis, and disturbance of tissue integrity in lung tissues, CRV might be seen as a useful therapeutic alternative.
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Affiliation(s)
- Berna Eriten
- Department of Pathology, Sancaktepe Sehit Prof. Dr. Ilhan Varank Training and Research Hospital, Türkiye
| | - Sefa Kucukler
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Türkiye
| | - Cihan Gur
- Department of Medical Laboratory Techniques, Vocational School of Health Services, Atatürk University, Erzurum, Türkiye
| | - Adnan Ayna
- Department of Chemistry, Faculty of Science and Literature, Bingol University, Bingol, Türkiye
| | - Halit Diril
- Medical Biochemistry Laboratory, Dursun Odabaş Medical Center, Van Yüzüncü Yıl University, Türkiye
| | - Cuneyt Caglayan
- Department of Medical Biochemistry, Faculty of Medicine, Bilecik Seyh Edebali University, Bilecik, Türkiye
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Bouchla A, Sotiropoulou CD, Esteb C, Loupis T, Papageorgiou SG, Deliconstantinos GG, Pagoni M, Hatzimichael E, Dellatola M, Kalomoiri S, Apostolidou E, Kontos CK, Thomopoulos TP, Karantanos T, Pappa V. Silencing of the DNA damage repair regulator PPP1R15A sensitizes acute myeloid leukemia cells to chemotherapy. Ann Hematol 2024; 103:2853-2863. [PMID: 38842564 PMCID: PMC11283411 DOI: 10.1007/s00277-024-05785-x] [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: 01/23/2024] [Accepted: 04/30/2024] [Indexed: 06/07/2024]
Abstract
Acute Myeloid Leukemia (AML) is a life-threatening disease whose induction treatment consists of combination chemotherapy with Idarubicin and Cytarabine for fit patients. Treatment failures are frequent, urging the need for novel treatments for this disease. The DNA Damage Response Mechanism (DDR) comprises numerous molecules and pathways intended to arrest the cell cycle until DNA damage is repaired or else drive the cell to apoptosis. AML-derived cell lines after treatment with Idarubicin and Cytarabine were used for studying the expression profile of 84 DDR genes, through PCR arrays. Utilizing de novo AML patient and control samples we studied the expression of PPP1R15A, CDKN1A, GADD45A, GADD45G, and EXO1. Next, we performed PPP1R15A silencing in AML cell lines in two separate experiments using siRNA and CRISPR-cas9, respectively. Our findings highlight that DDR regulators demonstrate increased expression in patients with high cytogenetic risk possibly reflecting increased genotoxic stress. Especially, PPP1R15A is mainly involved in the recovery of the cells from stress and it was the only DDR gene upregulated in AML patients. The PPP1R15A silencing resulted in decreased viability of Idarubicin and Cytarabine-treated cell lines, in contrast to untreated cells. These findings shed light on new strategies to enhance chemotherapy efficacy and demonstrate that PPP1R15A is an important DDR regulator in AML and its downregulation might be a safe and effective way to increase sensitivity to chemotherapy in this disease.
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Affiliation(s)
- Anthi Bouchla
- Second Department of Internal Medicine and Research Institute, National and Kapodistrian University of Athens, Athens, Greece
| | - Christina D Sotiropoulou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Christopher Esteb
- Hematologic Malignancies Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA
| | - Theodoros Loupis
- Hematology Research Lab, Clinical, Experimental and Translational Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Sotirios G Papageorgiou
- Second Department of Internal Medicine and Research Institute, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgia G Deliconstantinos
- Second Department of Internal Medicine and Research Institute, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Pagoni
- Hematology-Lymphomas Department and BMT Unit, Evangelismos General Hospital, Athens, Greece
| | | | - Maria Dellatola
- Hematology-Lymphomas Department and BMT Unit, Evangelismos General Hospital, Athens, Greece
| | - Smaragdi Kalomoiri
- Hematology-Lymphomas Department and BMT Unit, Evangelismos General Hospital, Athens, Greece
| | | | - Christos K Kontos
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Thomas P Thomopoulos
- Second Department of Internal Medicine and Research Institute, National and Kapodistrian University of Athens, Athens, Greece
| | - Theodoros Karantanos
- Hematologic Malignancies Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA
| | - Vasiliki Pappa
- Second Department of Internal Medicine and Research Institute, National and Kapodistrian University of Athens, Athens, Greece.
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Chavan T, Kanabar D, Patel K, Laflamme TM, Riyazi M, Spratt DE, Muth A. Structural modification of the propyl linker of cjoc42 in combination with sulfonate ester and triazole replacements for enhanced gankyrin binding and anti-proliferative activity. Bioorg Med Chem 2024; 110:117836. [PMID: 39029437 PMCID: PMC11342405 DOI: 10.1016/j.bmc.2024.117836] [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: 05/10/2024] [Revised: 06/28/2024] [Accepted: 07/09/2024] [Indexed: 07/21/2024]
Abstract
Liver cancer is a complex disease that involves various oncoproteins and the inactivation of tumor suppressor proteins (TSPs). Gankyrin is one such oncoprotein, first identified in human hepatocellular carcinoma, that is known to inactivate multiple TSPs, leading to proliferation and metastasis of tumor cells. Despite this, there has been limited development of small molecule gankyrin binders for the treatment of liver cancer. In this study, we are reporting the structure-based design of gankyrin-binding small molecules which inhibit the proliferation of HuH6 and HepG2 cells while also increasing the levels of certain TSPs, such as Rb and p53. Interestingly the first molecule to exhibit inhibition by 3D structure stabilization is seen. These results suggest a possible mechanism for small-molecule inhibition of gankyrin and demonstrate that gankyrin is a viable therapeutic target for the treatment of liver cancer.
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Affiliation(s)
- Tejashri Chavan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, USA
| | - Dipti Kanabar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, USA
| | - Kinjal Patel
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, USA
| | - Taylor M Laflamme
- Gustaf H. Carlson School of Chemistry & Biochemistry, Clark University, Worcester, MA 01610, USA
| | - Maryam Riyazi
- Gustaf H. Carlson School of Chemistry & Biochemistry, Clark University, Worcester, MA 01610, USA
| | - Donald E Spratt
- Gustaf H. Carlson School of Chemistry & Biochemistry, Clark University, Worcester, MA 01610, USA
| | - Aaron Muth
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, USA.
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Kumar D, Tiwari M, Goel P, Singh MK, Selokar NL, Palta P. Comparative transcriptome profile of embryos at different developmental stages derived from somatic cell nuclear transfer (SCNT) and in-vitro fertilization (IVF) in riverine buffalo (Bubalus bubalis). Vet Res Commun 2024; 48:2457-2475. [PMID: 38829518 DOI: 10.1007/s11259-024-10419-8] [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: 02/29/2024] [Accepted: 05/17/2024] [Indexed: 06/05/2024]
Abstract
Somatic cell nuclear transfer (SCNT) is a very important reproductive technology with many diverse applications, such as fast multiplication of elite animals, the production of transgenic animals and embryonic stem (ES) cells. However, low cloning efficiency, a low live birth rate and the abnormally high incidence of abnormalities in the offspring born are attributed to incomplete or aberrant nuclear reprogramming. In SCNT embryos, the aberrant expression pattern of the genes throughout embryonic development is responsible for the incomplete nuclear reprogramming. The present study was carried out to identify the differential gene expression (DEGs) profile and molecular pathways of the SCNT and IVF embryos at different developmental stages (2 cell, 8 cell and blastocyst stages). In the present study, 1164 (2 cell), 1004 (8 cell) and 530 (blastocyst stage) DEGs were identified in the SCNT embryos as compared to IVF embryos. In addition, several genes such as ZEB1, GDF1, HSF5, PDE3B, VIM, TNNC, HSD3B1, TAGLN, ITGA4 and AGMAT were affecting the development of SCNT embryos as compared to IVF embryos. Further, Gene Ontology (GO) and molecular pathways analysis suggested, SCNT embryos exhibit variations compared to their IVF counterparts and affected the development of embryos throughout the different developmental stages. Apart from this, q-PCR analysis of the GDF1, TMEM114, and IGSF22 genes were utilized to validate the RNA-seq data. These findings contribute valuable insights about the different genes and molecular pathways underlying SCNT embryo development and offer crucial information for improving SCNT efficiency.
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Affiliation(s)
- Deepak Kumar
- ICAR- National Dairy Research Institute, Karnal, India
| | - Manish Tiwari
- ICAR- National Dairy Research Institute, Karnal, India.
| | - Pallavi Goel
- ICAR- National Dairy Research Institute, Karnal, India
| | | | | | - Prabhat Palta
- ICAR- National Dairy Research Institute, Karnal, India.
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39
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Zafar HS, Akbar H, Xu H, Ponnuraj N, Van Etten K, Jarosinski KW. Oncogenic Animal Herpesviruses. Curr Opin Virol 2024; 67:101424. [PMID: 38981163 DOI: 10.1016/j.coviro.2024.101424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 05/26/2024] [Accepted: 06/19/2024] [Indexed: 07/11/2024]
Abstract
Oncogenic viruses play a pivotal role in oncology due to their unique role in unraveling the complexities of cancer development. Understanding the role viruses play in specific cancers is important to provide basic insights into the transformation process, which will help identify potential cellular targets for treatment. This review discusses the diverse role of animal herpesviruses in initiating and promoting various forms of cancer. We will summarize the mechanisms that underlie the development of animal herpesvirus-induced cancer that may provide a basis for developing potential therapeutic interventions or preventative strategies in the future.
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Affiliation(s)
- Hafiz S Zafar
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Haji Akbar
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Huai Xu
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Nagendraprabhu Ponnuraj
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kathrine Van Etten
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Keith W Jarosinski
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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40
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Gi M, Suzuki S, Kanki M, Yokohira M, Tsukamoto T, Fujioka M, Vachiraarunwong A, Qiu G, Guo R, Wanibuchi H. A novel support vector machine-based 1-day, single-dose prediction model of genotoxic hepatocarcinogenicity in rats. Arch Toxicol 2024; 98:2711-2730. [PMID: 38762666 DOI: 10.1007/s00204-024-03755-w] [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: 02/12/2024] [Accepted: 03/27/2024] [Indexed: 05/20/2024]
Abstract
The development of a rapid and accurate model for determining the genotoxicity and carcinogenicity of chemicals is crucial for effective cancer risk assessment. This study aims to develop a 1-day, single-dose model for identifying genotoxic hepatocarcinogens (GHCs) in rats. Microarray gene expression data from the livers of rats administered a single dose of 58 compounds, including 5 GHCs, was obtained from the Open TG-GATEs database and used for the identification of marker genes and the construction of a predictive classifier to identify GHCs in rats. We identified 10 gene markers commonly responsive to all 5 GHCs and used them to construct a support vector machine-based predictive classifier. In the silico validation using the expression data of the Open TG-GATEs database indicates that this classifier distinguishes GHCs from other compounds with high accuracy. To further assess the model's effectiveness and reliability, we conducted multi-institutional 1-day single oral administration studies on rats. These studies examined 64 compounds, including 23 GHCs, with gene expression data of the marker genes obtained via quantitative PCR 24 h after a single oral administration. Our results demonstrate that qPCR analysis is an effective alternative to microarray analysis. The GHC predictive model showed high accuracy and reliability, achieving a sensitivity of 91% (21/23) and a specificity of 93% (38/41) across multiple validation studies in three institutions. In conclusion, the present 1-day single oral administration model proves to be a reliable and highly sensitive tool for identifying GHCs and is anticipated to be a valuable tool in identifying and screening potential GHCs.
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Affiliation(s)
- Min Gi
- Department of Environmental Risk Assessment, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Shugo Suzuki
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Masayuki Kanki
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Masanao Yokohira
- Department of Medical Education, Faculty of Medicine, Kagawa University, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
- Department of Pathology and Host-Defense, Faculty of Medicine, Kagawa University, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Tetsuya Tsukamoto
- Department of Diagnostic Pathology, Graduate School of Medicine, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Masaki Fujioka
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Arpamas Vachiraarunwong
- Department of Environmental Risk Assessment, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Guiyu Qiu
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Runjie Guo
- Department of Environmental Risk Assessment, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan.
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41
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Li J, Jordana L, Mehsen H, Wang X, Archambault V. Nuclear reassembly defects after mitosis trigger apoptotic and p53-dependent safeguard mechanisms in Drosophila. PLoS Biol 2024; 22:e3002780. [PMID: 39186808 PMCID: PMC11379398 DOI: 10.1371/journal.pbio.3002780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 09/06/2024] [Accepted: 08/01/2024] [Indexed: 08/28/2024] Open
Abstract
In animals, mitosis involves the breakdown of the nuclear envelope and the sorting of individualized, condensed chromosomes. During mitotic exit, emerging nuclei reassemble a nuclear envelope around a single mass of interconnecting chromosomes. The molecular mechanisms of nuclear reassembly are incompletely understood. Moreover, the cellular and physiological consequences of defects in this process are largely unexplored. Here, we have characterized a mechanism essential for nuclear reassembly in Drosophila. We show that Ankle2 promotes the PP2A-dependent recruitment of BAF and Lamin at reassembling nuclei, and that failures in this mechanism result in severe nuclear defects after mitosis. We then took advantage of perturbations in this mechanism to investigate the physiological responses to nuclear reassembly defects during tissue development in vivo. Partial depletion of Ankle2, BAF, or Lamin in imaginal wing discs results in wing development defects accompanied by apoptosis. We found that blocking apoptosis strongly enhances developmental defects. Blocking p53 does not prevent apoptosis but enhances defects due to the loss of a cell cycle checkpoint. Our results suggest that apoptotic and p53-dependent responses play a crucial role in safeguarding tissue development in response to sporadic nuclear reassembly defects.
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Affiliation(s)
- Jingjing Li
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
- Département de biochimie et médecine moléculaire, Université de Montréal, Montreal, Canada
| | - Laia Jordana
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
- Département de biochimie et médecine moléculaire, Université de Montréal, Montreal, Canada
| | - Haytham Mehsen
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
- Département de biochimie et médecine moléculaire, Université de Montréal, Montreal, Canada
| | - Xinyue Wang
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
| | - Vincent Archambault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
- Département de biochimie et médecine moléculaire, Université de Montréal, Montreal, Canada
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Ozawa S, Ojiro R, Tang Q, Zou X, Jin M, Yoshida T, Shibutani M. Involvement of multiple epigenetic mechanisms by altered DNA methylation from the early stage of renal carcinogenesis before proliferative lesion formation upon repeated administration of ochratoxin A. Toxicology 2024; 506:153875. [PMID: 38945198 DOI: 10.1016/j.tox.2024.153875] [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: 04/03/2024] [Revised: 06/20/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Ochratoxin A (OTA) is a rat renal carcinogen that induces karyomegaly and micronuclei in proximal tubular epithelial cells (PTECs). We previously performed comprehensive gene profiling of alterations in promoter-region methylation and gene expression in PTECs of rats treated with OTA for 13 weeks. The OTA-specific gene profile was obtained by excluding genes showing expression changes similar to those upon treatment with 3-chloro-1,2-propanediol, a renal carcinogen not inducing karyomegaly. In this study, we validated the candidate genes using methylated DNA enrichment PCR and real-time RT-PCR, and identified Gen1, Anxa3, Cdkn1a, and Osm as genes showing OTA-specific epigenetic changes. These genes and related molecules were subjected to gene expression and immunohistochemical analyses in the PTECs of rats treated with OTA, other renal carcinogens, or non-carcinogenic renal toxicants for 4 or 13 weeks. Cdkn1a upregulation and increase of p21WAF1/CIP1+ karyomegalic PTECs were observed with OTA, matching the findings associated with micronucleus-inducing carcinogens. This suggested that the increase of p21WAF1/CIP1+ karyomegalic PTECs is linked to micronucleus formation, which in turn accelerates chromosomal instability. The upregulation of Cdkn1a-related genes with OTA suggests the acquisition of a senescence-associated secretory phenotype, which promotes the establishment of a carcinogenic environment. Meanwhile, OTA specifically caused a decrease of GEN1+ PTECs reflecting Gen1 downregulation and an increase of ANXA3+ PTECs reflecting Anxa3 upregulation, as well as Osm upregulation. OTA may efficiently disrupt pathways for repairing the DNA double-strand breaks that it itself causes, via Gen1 downregulation, and enhance cell proliferation through the upregulation of Anxa3 and Osm. This may exacerbate the chromosomal instability from the early stage of OTA-induced renal carcinogenesis before proliferative lesions form. OTA may cause renal carcinogenesis involving multiple epigenetic mechanisms.
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Affiliation(s)
- Shunsuke Ozawa
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Ryota Ojiro
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Qian Tang
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Xinyu Zou
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Meilan Jin
- Laboratory of Veterinary Pathology, College of Veterinary Medicine, Southwest University, No. 2 Tiansheng Road, BeiBei District, Chongqing 400715, PR China.
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
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Lv L, Zhou F, Quan Y, Fan Y, Bao Y, Dou Y, Qu H, Dai X, Zhao H, Zheng S, Zhao C, Yang L. Demethylzeylasteral exerts potent efficacy against non-small-cell lung cancer via the P53 signaling pathway. Transl Oncol 2024; 46:101989. [PMID: 38781861 PMCID: PMC11141460 DOI: 10.1016/j.tranon.2024.101989] [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: 01/02/2024] [Revised: 04/18/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Lung cancer has one of the highest mortality rates worldwide, with non-small-cell lung cancer (NSCLC) constituting approximately 85% of all cases. Demethylzeylasteral (DEM), extracted from Tripterygium wilfordii Hook F, exhibits notable anti-tumor properties. In this study, we revealed that DEM could effectively induce NSCLC cell apoptosis. Specifically, DEM can dose-dependently suppress the viability and migration of human NSCLC cells. RNA-seq analysis revealed that DEM regulates the P53-signaling pathway, which was further validated by assessing crucial proteins involved in this pathway. Biacore analysis indicated that DEM has high affinity with the P53 protein. The CDX model demonstrated DEM's anti-tumor actions. This work provided evidence that DEM-P53 interaction stabilizes P53 protein and triggers downstream anti-tumor activities. These findings indicate that DEM treatment holds promise as a potential therapeutic approach for NSCLC, which warrants further clinical assessment in patients with NSCLC.
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Affiliation(s)
- Linxi Lv
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; The Institute of Life Sciences, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Feng Zhou
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; The Institute of Life Sciences, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yizhou Quan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yiwei Fan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yunjia Bao
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Yaning Dou
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Hongyan Qu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xuanxuan Dai
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China
| | - Haiyang Zhao
- The Institute of Life Sciences, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Suqing Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| | - Chengguang Zhao
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| | - Lehe Yang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; The Institute of Life Sciences, Wenzhou University, Wenzhou, Zhejiang 325035, China.
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Wang Z, Duan H, You X, Peng Q, Yuan N, Sha R, Xie Z, Feng Y. Deoxynivalenol triggers mitotic catastrophe and apoptosis in C2C12 myoblasts. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 281:116607. [PMID: 38908055 DOI: 10.1016/j.ecoenv.2024.116607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 06/06/2024] [Accepted: 06/14/2024] [Indexed: 06/24/2024]
Abstract
Deoxynivalenol (DON), commonly known as vomitoxin, is a mycotoxin produced by fungi and is frequently found as a contaminant in various cereal-based food worldwide. While the harmful effects of DON have been extensively studied in different tissues, its specific impact on the proliferation of skeletal muscle cells remains unclear. In this study, we utilized murine C2C12 myoblasts as a model to explore the influence of DON on their proliferation. Our observations indicated that DON exhibits dose-dependent toxicity, significantly inhibiting the proliferation of C2C12 cells. Through the application of RNA-seq analysis combined with gene set enrichment analysis, we identified a noteworthy downregulation of genes linked to the extracellular matrix (ECM) and condensed chromosome. Concurrently with the reduced expression of ECM genes, immunostaining analysis revealed notable changes in the distribution of fibronectin, a vital ECM component, condensing into clusters and punctate formations. Remarkably, the exposure to DON induced the formation of multipolar spindles, leading to the disruption of the normal cell cycle. This, in turn, activated the p53-p21 signaling pathway and ultimately resulted in apoptosis. These findings contribute significant insights into the mechanisms through which DON induces toxicity within skeletal muscle cells.
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Affiliation(s)
- Zhenzhen Wang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Huimin Duan
- Lin He's Academician Workstation of New Medicine and Clinical Translation in Jining Medical University, Jining Medical University, Jining, China.
| | - Xue You
- Lin He's Academician Workstation of New Medicine and Clinical Translation in Jining Medical University, Jining Medical University, Jining, China
| | - Qian Peng
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Ningyang Yuan
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Rula Sha
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Zhiqin Xie
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Ying Feng
- Lin He's Academician Workstation of New Medicine and Clinical Translation in Jining Medical University, Jining Medical University, Jining, China; CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China.
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Kumar S, Yadav V, Sharma N, Sethi A. HypoxamiR-210-3p regulates mesenchymal stem cells proliferation via P53 & Akt. Mol Cell Biochem 2024; 479:2119-2129. [PMID: 37620743 DOI: 10.1007/s11010-023-04834-9] [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: 05/05/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023]
Abstract
Transplanted stem cells (˃95%) into ischemic myocardium die because of unfavourable conditions. Moreover, hypoxia role in the cell cycle regulation has been studied in transformed/immortalized cell lines which may have altered cell cycle regulators and/or mutated and, can't be transplanted in patients. We quest to find out the mechanism of cell cycle regulation in mesenchymal stem cells (MSC) to regulate its survival and proliferation in repair processes. Additionally, critically analysed role of hypoxamiR-210-3p, and cell cycle regulators that can regulate cell proliferation under hypoxic conditions. Bone marrow-derived MSC (BM-MSC) isolated from young male Fischer-344 rats by flushing the cavity of femur and propagated in vitro under 1% hypoxia for 72 h showed an increased in cell proliferation ( > 30%, p < 0.05) compared to normoxia. miR-210-3p, role in cell proliferation under hypoxic condition was confirmed by knockdown. Loss of function studies with transfection of anti-mir-210-3p, we observed decrease in proliferation of BM-MSC under hypoxia. Furthermore, BM-MSC proliferation due to miR-210-3p was confirmed using CFSE assay and flow cytometry, in which more cells were observed in S-phase. Mechanistically, western blot analysis showed miR-210-3p inhibition upregulates p53 and p21 expression and subsequent decrease in pAkt under hypoxia. On contrary, CFSE and Western blot under normoxic conditions showed downregulation of p53 and p21 whilst upregulation of pAkt indicated the key role of miR-210-3p in BM-MSC proliferation. Our results demonstrate the role of miR-210-3p in BM-MSC proliferation under both hypoxic and normoxic conditions and illustrate the potential mechanism via the regulation of pAkt, p53 and p21.
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Affiliation(s)
- Sanjay Kumar
- Department of Biochemistry, Medical College, All India Institute of Medical Sciences, Bathinda, India.
- Division of Regenerative Medicine, Department of Pathology and Laboratory Medicine, Center of Excellence (CoE) Cardiovascular Diseases, College of Medicine, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH, 45229, USA.
- Department of Biochemistry, Medical College, All India Institute of Medical Sciences, Bathinda, Punjab, 151001, India.
| | - Varsha Yadav
- Department of Biochemistry, Medical College, All India Institute of Medical Sciences, Bathinda, India
| | - Namrta Sharma
- Department of Biochemistry, Medical College, All India Institute of Medical Sciences, Bathinda, India
| | - Anshika Sethi
- Department of Biochemistry, Medical College, All India Institute of Medical Sciences, Bathinda, India
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Kizhakkoottu S, Ramani P, Tilakaratne WM. Role of Stem Cells in the Pathogenesis and Malignant Transformation of Oral Submucous Fibrosis. Stem Cell Rev Rep 2024; 20:1512-1520. [PMID: 38837114 DOI: 10.1007/s12015-024-10744-0] [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] [Accepted: 05/29/2024] [Indexed: 06/06/2024]
Abstract
BACKGROUND Pathogenesis and malignant potential of Oral submucous fibrosis(OSMF) have always been a topic of interest among the researchers. Despite OSMF being a collagen metabolic disorder, the alterations occurring in the connective tissue stroma affects the atrophic surface epithelium in later stages and progresses to malignant phenotypes. The present review aims to summarize the role of stem cells in the pathogenesis and malignant transformation of oral submucous fibrosis. MATERIALS AND METHODS A literature search was carried out using data banks like Medline and Embase, google scholar and manual method with no time frame, pertinent to the role of mucosal stem cells in OSMF and its malignisation. The relevant literature was reviewed, critically appraised by all the authors and compiled in this narrative review. RESULTS Critical appraisal and evaluation of the data extracted from the selected articles were compiled in this review. The collated results highlighted the upregulation and downregulation of various stem cell markers during the progression and malignisation of OSMF were depicted in a descriptive and detail manner in the present review. CONCLUSION We highlight the potential of mucosal stem cells in the regulation and malignisation of OSMF. However, future large-scale clinical studies will be needed to support whether manipulation of this stem cells at molecular level will be sufficient for the treatment and preventing the malignant transformation of OSMF.
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Affiliation(s)
- Suvarna Kizhakkoottu
- Department of Oral Pathology and Microbiology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India
| | - Pratibha Ramani
- Department of Oral Pathology and Microbiology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India.
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Gallego-Rentero M, López Sánchez A, Nicolás-Morala J, Alcaraz-Laso P, Zhang N, Juarranz Á, González S, Carrasco E. The effect of Fernblock® in preventing blue-light-induced oxidative stress and cellular damage in retinal pigment epithelial cells is associated with NRF2 induction. Photochem Photobiol Sci 2024; 23:1471-1484. [PMID: 38909335 DOI: 10.1007/s43630-024-00606-6] [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: 04/28/2024] [Accepted: 06/13/2024] [Indexed: 06/24/2024]
Abstract
Blue light exposure of the ocular apparatus is currently rising. This has motivated a growing concern about potential deleterious effects on different eye structures. To address this, ARPE-19 cells were used as a model of the retinal pigment epithelium and subjected to cumulative expositions of blue light. The most relevant cellular events previously associated with blue-light-induced damage were assessed, including alterations in cell morphology, viability, cell proliferation, oxidative stress, inflammation, and the induction of DNA repair cellular mechanisms. Consistent with previous reports, our results provide evidence of cellular alterations resulting from repeated exposure to blue light irradiation. In this context, we explored the potential protective properties of the vegetal extract from Polypodium leucotomos, Fernblock® (FB), using the widely known treatment with lutein as a reference for comparison. The only changes observed as a result of the sole treatment with either FB or lutein were a slight but significant increase in γH2AX+ cells and the raise in the nuclear levels of NRF2. Overall, our findings indicate that the treatment with FB (similarly to lutein) prior to blue light irradiation can alleviate blue-light-induced deleterious effects in RPE cells, specifically preventing the drop in both cell viability and percentage of EdU+ cells, as well as the increase in ROS generation, percentage of γH2AX+ nuclei (more efficiently with FB), and TNF-α secretion (the latter restored only by FB to similar levels to those of the control). On the contrary, the induction in the P21 expression upon blue light irradiation was not prevented neither by FB nor by lutein. Notably, the nuclear translocation of NRF2 induced by blue light was similar to that observed in cells pre-treated with FB, while lutein pre-treatment resulted in nuclear NRF2 levels similar to control cells, suggesting key differences in the mechanism of cellular protection exerted by these compounds. These results may represent the foundation ground for the use of FB as a new ingredient in the development of alternative prophylactic strategies for blue-light-associated diseases, a currently rising medical interest.
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Affiliation(s)
- María Gallego-Rentero
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | | | - Jimena Nicolás-Morala
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Paula Alcaraz-Laso
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
| | - Noelia Zhang
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
| | - Ángeles Juarranz
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Salvador González
- Department of Medicine and Medical Specialties, Alcalá de Henares University, Madrid, Spain.
| | - Elisa Carrasco
- Department of Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain.
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain.
- Centro de Biología Molecular Severo Ochoa (CBM); Instituto Universitario de Biología Molecular-IUBM (Universidad Autónoma de Madrid), Madrid, Spain.
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Ma M, Zhu Y, Xiao C, Li R, Cao X, Kang R, Wang X, Li E. Novel insights into RB1 in prostate cancer lineage plasticity and drug resistance. TUMORI JOURNAL 2024; 110:252-263. [PMID: 38316605 DOI: 10.1177/03008916231225576] [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] [Indexed: 02/07/2024]
Abstract
Prostate cancer is the second most common malignancy among men in the world, posing a serious threat to men's health and lives. RB1 is the first human tumor suppressor gene to be described, and it is closely associated with the development, progression, and suppression of a variety of tumors. It was found that the loss of RB1 is an early event in prostate cancer development and is closely related to prostate cancer development, progression and treatment resistance. This paper reviews the current status of research on the relationship between RB1 and prostate cancer from three aspects: RB1 and prostate cell lineage plasticity; biological behavior; and therapeutic resistance. Providing a novel perspective for developing new therapeutic strategies for RB1-loss prostate cancer.
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Affiliation(s)
- Min Ma
- Institute of Translational Medicine, School of Basic Medical, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Yazhi Zhu
- Institute of Translational Medicine, School of Basic Medical, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Changkai Xiao
- Department of Urology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Ruidong Li
- Department of Urology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Xingyu Cao
- Institute of Translational Medicine, School of Basic Medical, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Ran Kang
- Department of Urology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Xiaolan Wang
- Department of Reproductive Medicine, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Ermao Li
- Institute of Translational Medicine, School of Basic Medical, Hengyang Medical School, University of South China, Hengyang, Hunan, China
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Nie P, Zhang C, Wu F, Chen S, Wang L. The Compromised Fanconi Anemia Pathway in Prelamin A-Expressing Cells Contributes to Replication Stress-Induced Genomic Instability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307751. [PMID: 38894550 PMCID: PMC11321653 DOI: 10.1002/advs.202307751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 04/30/2024] [Indexed: 06/21/2024]
Abstract
Genomic instability is not only a hallmark of senescent cells but also a key factor driving cellular senescence, and replication stress is the main source of genomic instability. Defective prelamin A processing caused by lamin A/C (LMNA) or zinc metallopeptidase STE24 (ZMPSTE24) gene mutations results in premature aging. Although previous studies have shown that dysregulated lamin A interferes with DNA replication and causes replication stress, the relationship between lamin A dysfunction and replication stress remains largely unknown. Here, an increase in baseline replication stress and genomic instability is found in prelamin A-expressing cells. Moreover, prelamin A confers hypersensitivity of cells to exogenous replication stress, resulting in decreased cell survival and exacerbated genomic instability. These effects occur because prelamin A promotes MRE11-mediated resection of stalled replication forks. Fanconi anemia (FA) proteins, which play important roles in replication fork maintenance, are downregulated by prelamin A in a retinoblastoma (RB)/E2F-dependent manner. Additionally, prelamin A inhibits the activation of the FA pathway upon replication stress. More importantly, FA pathway downregulation is an upstream event of p53-p21 axis activation during the induction of prelamin A expression. Overall, these findings highlight the critical role of FA pathway dysfunction in driving replication stress-induced genomic instability and cellular senescence in prelamin A-expressing cells.
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Affiliation(s)
- Pengqing Nie
- Department of GastroenterologyHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseMinistry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaikang Center for Life and Medical SciencesZhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan UniversityWuhan430071China
- Department of Infectious DiseasesInstitute of PediatricsShenzhen Children's HospitalShenzhenGuangdong518038China
| | - Cheng Zhang
- Department of GastroenterologyHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseMinistry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaikang Center for Life and Medical SciencesZhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan UniversityWuhan430071China
| | - Fengyi Wu
- Department of GastroenterologyHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseMinistry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaikang Center for Life and Medical SciencesZhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan UniversityWuhan430071China
| | - Shi Chen
- Department of GastroenterologyHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseMinistry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaikang Center for Life and Medical SciencesZhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan UniversityWuhan430071China
- Department of Burn and Plastic SurgeryShenzhen Institute of Translational Medicine, Medical Innovation Technology Transformation Center of Shenzhen Second People's HospitalShenzhen Key Laboratory of Microbiology in Genomic Modification & Editing and ApplicationGuangdong Provincial Key Laboratory of Systems Biology and Synthetic Biology for Urogenital TumorsShenzhen University Medical School, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen UniversityShenzhen518035China
| | - Lianrong Wang
- Department of GastroenterologyHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseMinistry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaikang Center for Life and Medical SciencesZhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan UniversityWuhan430071China
- Department of Infectious DiseasesInstitute of PediatricsShenzhen Children's HospitalShenzhenGuangdong518038China
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50
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Van Loy B, Stevaert A, Naesens L. The coronavirus nsp15 endoribonuclease: A puzzling protein and pertinent antiviral drug target. Antiviral Res 2024; 228:105921. [PMID: 38825019 DOI: 10.1016/j.antiviral.2024.105921] [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: 04/12/2024] [Revised: 05/24/2024] [Accepted: 05/29/2024] [Indexed: 06/04/2024]
Abstract
The SARS-CoV-2 pandemic has bolstered unprecedented research efforts to better understand the pathogenesis of coronavirus (CoV) infections and develop effective therapeutics. We here focus on non-structural protein nsp15, a hexameric component of the viral replication-transcription complex (RTC). Nsp15 possesses uridine-specific endoribonuclease (EndoU) activity for which some specific cleavage sites were recently identified in viral RNA. By preventing accumulation of viral dsRNA, EndoU helps the virus to evade RNA sensors of the innate immune response. The immune-evading property of nsp15 was firmly established in several CoV animal models and makes it a pertinent target for antiviral therapy. The search for nsp15 inhibitors typically proceeds via compound screenings and is aided by the rapidly evolving insight in the protein structure of nsp15. In this overview, we broadly cover this fascinating protein, starting with its structure, biochemical properties and functions in CoV immune evasion. Next, we summarize the reported studies in which compound screening or a more rational method was used to identify suitable leads for nsp15 inhibitor development. In this way, we hope to raise awareness on the relevance and druggability of this unique CoV protein.
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Affiliation(s)
- Benjamin Van Loy
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Leuven, Belgium
| | - Annelies Stevaert
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Leuven, Belgium
| | - Lieve Naesens
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Leuven, Belgium.
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