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Lipreri da Silva JC, Lima K, Ede B, Lazarini M, Vicari HP, Nogueira FL, Clayton NS, Pinnell K, Silva WFD, Velloso EDRP, Bendit I, Costa-Lotufo LV, Rego EM, Ridley AJ, Machado-Neto JA. Pharmacological inhibition of ezrin reduces proliferative and invasive phenotype in acute lymphoblastic leukemia cells. Eur J Pharmacol 2024; 987:177161. [PMID: 39615869 DOI: 10.1016/j.ejphar.2024.177161] [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: 09/04/2024] [Revised: 11/05/2024] [Accepted: 11/28/2024] [Indexed: 12/06/2024]
Abstract
Ezrin (EZR) is an actin-associated protein that is often upregulated in cancers. Here we investigate the role of EZR in acute lymphoblastic leukemia (ALL) and explore the therapeutic potential of a pharmacological EZR inhibitor, NSC305787. ALL patient cohorts exhibit significantly elevated EZR mRNA levels, indicating its association with the malignant phenotype. Notably, EZR expression does not impact survival outcomes or relevant clinical-laboratory characteristics, suggesting a role in disease initiation rather than therapy response. NSC305787 induces a dose-dependent reduction in ALL cell viability, and is more potent than a related EZR inhibitor, NSC668394. NSC305787 has multiple effects on ALL cells, including apoptosis induction, clonal growth reduction, and inhibition of cell cycle progression. Importantly, it diminishes adhesiveness and invasiveness in ALL cells. Proteomics analysis highlights changes in translation, RNA catabolism, and cell cycle regulation, emphasizing the broad impact of EZR inhibition on ALL cell biology. Ex vivo assays with primary cells from acute myeloid leukemia (AML) and ALL patients demonstrate NSC305787's efficacy across a molecularly heterogeneous group, independent of risk stratification or recurrent mutations. Notably, NSC305787 shows heightened potency in ALL cells, suggesting its potential as a targeted therapy. In conclusion, our results report high EZR expression in adult ALL patients and support NSC305787 as a promising targeted therapy for ALL that should be further explored.
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Affiliation(s)
| | - Keli Lima
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Benjamin Ede
- School of Cellular and Molecular Medicine, Faculty of Health and Life Sciences, University of Bristol, Bristol, United Kingdom
| | - Mariana Lazarini
- Department of Clinical and Experimental Oncology, Federal University of São Paulo, São Paulo, Brazil
| | - Hugo Passos Vicari
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Frederico Lisboa Nogueira
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Natasha S Clayton
- School of Cellular and Molecular Medicine, Faculty of Health and Life Sciences, University of Bristol, Bristol, United Kingdom
| | - Katy Pinnell
- School of Cellular and Molecular Medicine, Faculty of Health and Life Sciences, University of Bristol, Bristol, United Kingdom
| | - Wellington Fernandes da Silva
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Elvira Deolinda Rodrigues Pereira Velloso
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Israel Bendit
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Leticia Veras Costa-Lotufo
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Eduardo Magalhães Rego
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Division of Hematology, Hemotherapy and Cell Therapy, Medical School Clinic Hospital, University of São Paulo, São Paulo, Brazil
| | - Anne J Ridley
- School of Cellular and Molecular Medicine, Faculty of Health and Life Sciences, University of Bristol, Bristol, United Kingdom
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Ma Y, Chang H. SIRT7 Inhibits Melanin Synthesis of PIG1 and PIG3V by Suppressing the Succinylation of EZR. Clin Cosmet Investig Dermatol 2024; 17:1495-1504. [PMID: 38933605 PMCID: PMC11204816 DOI: 10.2147/ccid.s462280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/18/2024] [Indexed: 06/28/2024]
Abstract
Background Vitiligo is an autoimmune disease characterized by loss of skin pigmentation and currently has no effective treatment. This study aimed to investigate the function of SIRT7, being an important desuccinylase mediating multiple disease progression, and its mechanism in vitiligo progression. Methods Normal human melanocytes (NHM) PIG1 and vitiligo human melanocytes (VHM) PIG3V were utilized in this research. The role of sirtuin 7 (SIRT7) and Ezrin (EZR) on melanin synthesis was investigated by detecting tyrosinase activity, melanin content, α-MSH levels, and the protein levels of melanin-related markers. The function of EZR was identified via rescue experiments, while the underlying mechanism was investigated via bioinformatic analysis, co-immunoprecipitation (co-IP), immunoprecipitation (IP), and Western blot techniques. Results Results showed that only SIRT7 was highly expressed in vitiligo human melanocytes, where knockingdown SIRT7 translated into increased melanin synthesis in melanocytes. Mechanistically, SIRT7 knockdown promoted the succinylation of EZR at the Lys (K)60 site. Moreover, overexpressing EZR induced higher melanin synthesis in melanocytes, while its knocking down exerted the opposite effect by inhibiting SIRT7 knockdown-induced melanin synthesis. Conclusion SIRT7 inhibited melanin synthesis in melanocytes by suppressing the succinylation of EZR. These findings are envisaged to provide a novel theoretical basis for vitiligo treatment.
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Affiliation(s)
- Yuehong Ma
- Department of Dermatology, The Affiliated Changzhou Second People’s Hospital of Nanjing Medical University, Changzhou, People’s Republic of China
| | - Hongqin Chang
- Department of Dermatology, The Affiliated Changzhou Second People’s Hospital of Nanjing Medical University, Changzhou, People’s Republic of China
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Alhujaily M. Glyoxalase System in Breast and Ovarian Cancers: Role of MEK/ERK/SMAD1 Pathway. Biomolecules 2024; 14:584. [PMID: 38785990 PMCID: PMC11117840 DOI: 10.3390/biom14050584] [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] [Revised: 05/03/2024] [Accepted: 05/05/2024] [Indexed: 05/25/2024] Open
Abstract
The glyoxalase system, comprising GLO1 and GLO2 enzymes, is integral in detoxifying methylglyoxal (MGO) generated during glycolysis, with dysregulation implicated in various cancer types. The MEK/ERK/SMAD1 signaling pathway, crucial in cellular processes, influences tumorigenesis, metastasis, and angiogenesis. Altered GLO1 expression in cancer showcases its complex role in cellular adaptation and cancer aggressiveness. GLO2 exhibits context-dependent functions, contributing to both proapoptotic and antiapoptotic effects in different cancer scenarios. Research highlights the interconnected nature of these systems, particularly in ovarian cancer and breast cancer. The glyoxalase system's involvement in drug resistance and its impact on the MEK/ERK/SMAD1 signaling cascade underscore their clinical significance. Furthermore, this review delves into the urgent need for effective biomarkers, exemplified in ovarian cancer, where the RAGE-ligand pathway emerges as a potential diagnostic tool. While therapeutic strategies targeting these pathways hold promise, this review emphasizes the challenges posed by context-dependent effects and intricate crosstalk within the cellular milieu. Insights into the molecular intricacies of these pathways offer a foundation for developing innovative therapeutic approaches, providing hope for enhanced cancer diagnostics and tailored treatment strategies.
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Affiliation(s)
- Muhanad Alhujaily
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia
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Vilarinho T, Pádua D, Pereira B, Mesquita P, Almeida R. MISP Is Overexpressed in Intestinal Metaplasia and Gastric Cancer. Curr Oncol 2024; 31:2769-2779. [PMID: 38785491 PMCID: PMC11120023 DOI: 10.3390/curroncol31050210] [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: 04/03/2024] [Revised: 04/29/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Gastric cancer is the fifth most common cancer and the fourth cause of global cancer mortality. The identification of new biomarkers and drug targets is crucial to allow the better prognosis and treatment of patients. The mitotic spindle positioning (MISP) protein has the function of correcting mitotic spindle positioning and centrosome clustering and has been implicated in the cytokinesis and migration of cancer cells. The goal of this work was to evaluate the expression and clinical relevance of MISP in gastric cancer. MISP expression was evaluated by immunohistochemistry in a single hospital series (n = 286) of gastric adenocarcinomas and compared with normal gastric mucosa and intestinal metaplasia, a preneoplastic lesion. MISP was detected on the membrane in 83% of the cases, being overexpressed in gastric cancer compared to normal gastric mucosa (n = 10). Its expression was negatively associated with diffuse and poorly cohesive types. On the other hand, it was strongly expressed in intestinal metaplasia where it was associated with MUC2 and CDX2 expression. Furthermore, when we silenced MISP in vitro, a significant decrease in the viability of gastric carcinoma cells was observed. In conclusion, MISP is overexpressed in gastric cancer, being associated with an intestinal phenotype in gastric carcinogenesis and having a role in cellular proliferation.
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Affiliation(s)
- Tomás Vilarinho
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; (T.V.); (D.P.); (B.P.); (P.M.)
| | - Diana Pádua
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; (T.V.); (D.P.); (B.P.); (P.M.)
- IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-465 Porto, Portugal
| | - Bruno Pereira
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; (T.V.); (D.P.); (B.P.); (P.M.)
- IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-465 Porto, Portugal
| | - Patrícia Mesquita
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; (T.V.); (D.P.); (B.P.); (P.M.)
- IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-465 Porto, Portugal
| | - Raquel Almeida
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; (T.V.); (D.P.); (B.P.); (P.M.)
- IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-465 Porto, Portugal
- Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
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Johnson AR, Rao K, Zhang BB, Mullet S, Goetzman E, Gelhaus S, Tejero J, Shiva U. Myoglobin Inhibits Breast Cancer Cell Fatty Acid Oxidation and Migration via Heme-dependent Oxidant Production and Not Fatty Acid Binding. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.30.591659. [PMID: 38746370 PMCID: PMC11092581 DOI: 10.1101/2024.04.30.591659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The monomeric heme protein myoglobin (Mb), traditionally thought to be expressed exclusively in cardiac and skeletal muscle, is now known to be expressed in approximately 40% of breast tumors. While Mb expression is associated with better patient prognosis, the molecular mechanisms by which Mb limits cancer progression are unclear. In muscle, Mb's predominant function is oxygen storage and delivery, which is dependent on the protein's heme moiety. However, prior studies demonstrate that the low levels of Mb expressed in cancer cells preclude this function. Recent studies propose a novel fatty acid binding function for Mb via a lysine residue (K46) in the heme pocket. Given that cancer cells can upregulate fatty acid oxidation (FAO) to maintain energy production for cytoskeletal remodeling during cell migration, we tested whether Mb-mediated fatty acid binding modulates FAO to decrease breast cancer cell migration. We demonstrate that the stable expression of human Mb in MDA-MB-231 breast cancer cells decreases cell migration and FAO. Site-directed mutagenesis of Mb to disrupt Mb fatty acid binding did not reverse Mb-mediated attenuation of FAO or cell migration in these cells. In contrast, cells expressing Apo-Mb, in which heme incorporation was disrupted, showed a reversal of Mb-mediated attenuation of FAO and cell migration, suggesting that Mb attenuates FAO and migration via a heme-dependent mechanism rather than through fatty acid binding. To this end, we show that Mb's heme-dependent oxidant generation propagates dysregulated gene expression of migratory genes, and this is reversed by catalase treatment. Collectively, these data demonstrate that Mb decreases breast cancer cell migration, and this effect is due to heme-mediated oxidant production rather than fatty acid binding. The implication of these results will be discussed in the context of therapeutic strategies to modulate oxidant production and Mb in tumors. Highlights Myoglobin (Mb) expression in MDA-MB-231 breast cancer cells slows migration.Mb expression decreases mitochondrial respiration and fatty acid oxidation.Mb-dependent fatty acid binding does not regulate cell migration or respiration.Mb-dependent oxidant generation decreases mitochondrial metabolism and migration.Mb-derived oxidants dysregulate migratory gene expression.
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Zhu Y, Zhang X, Chen Y, Liu Q, Yang J, Fan X, Song H, Cheng Z, Liu S. Ezrin's role in gastric cancer progression: Implications for immune microenvironment modulation and therapeutic potential. Heliyon 2024; 10:e27155. [PMID: 38449647 PMCID: PMC10915575 DOI: 10.1016/j.heliyon.2024.e27155] [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: 11/27/2023] [Revised: 02/15/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024] Open
Abstract
At present, surgical resection is the most effective method for the treatment of gastric cancer. However, death caused by inoperable metastasis is still very common, despite research in this area. The mechanisms underlying the occurrence, development, and metastasis of gastric cancer are not fully understood. Ezrin, a plasma membrane-microfilament junction participates in a variety of cellular activities and is closely related to tumorigenesis and development. Few studies have explored the relationship between the tumor immune microenvironment and ezrin expression in gastric cancer. In this study, we used proteomic techniques to analyze the differentially expressed proteins between the gastric cancer cell lines MKN-45 and HGC-27 and screened ezrin as the target protein. We collected patient information from The TCGA and GEO databases, and the results showed that ezrin was positively correlated with adverse clinical features. We further explored the relationship between ezrin expression levels, immune microenvironment, and genomic changes. We found that ezrin was involved in immune regulation and genomic instability in gastric cancer. When the expression of ezrin is high, immune cell infiltration also increases. We also predicted that ezrin is closely related to immunotherapy and chemosensitivity. Single-cell transcriptome data showed that the ezrin gene was mainly expressed in B cells and epithelial cells, and the expression of EZR in these epithelial cells was positively correlated with the epithelial-mesenchymal transformation pathway and Pi3k-AKT pathway score. Through functional verification of the stably transfected cell line constructed by lentivirus, the results of the liver metastasis model in nude mice suggested that high expression of ezrin leads to the formation of more metastatic foci. In summary, our results clarify the prognostic, immunological, and therapeutic value of ezrin in gastric cancer and provide a theoretical basis for more accurate treatment.
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Affiliation(s)
- Yanli Zhu
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
- Digestive Disease Center, The First Affiliated Hospital of Jiamusi University, Heilongjiang Province, Jiamusi 154000, China
| | - Xue Zhang
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
| | - Yi Chen
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
| | - Qianli Liu
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
| | - Jin Yang
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
| | - Xiaoxiao Fan
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
| | - Hanjun Song
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
| | - Zhuoxin Cheng
- Department of General Surgery, The First Affiliated Hospital of Jiamusi University, Heilongjiang Province, Jiamusi 154000, China
| | - Shuang Liu
- Jiamusi University School of Basic Medicine, Jiamusi 154007, China
- Key Laboratory of Microecology-immune Regulatory Network and Related Diseases, Jiamusi 154007, China
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Lancaster T, Tabrizi MEA, Repici M, Gupta J, Gross SR. An Extracellular/Membrane-Bound S100P Pool Regulates Motility and Invasion of Human Extravillous Trophoblast Lines and Primary Cells. Biomolecules 2023; 13:1231. [PMID: 37627296 PMCID: PMC10452538 DOI: 10.3390/biom13081231] [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: 05/04/2023] [Revised: 07/17/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Whilst S100P has been shown to be a marker for carcinogenesis, we have shown, in non-physio-pathological states, that its expression promotes trophoblast motility and invasion but the mechanisms explaining these cellular processes are unknown. Here we identify the presence of S100P in the plasma membrane/cell surface of all trophoblast cells tested, whether lines, primary extravillous (EVT) cells, or section tissue samples using either biochemical purification of plasma membrane material, cell surface protein isolation through biotinylation, or microscopy analysis. Using extracellular loss of function studies, through addition of a specific S100P antibody, our work shows that inhibiting the cell surface/membrane-bound or extracellular S100P pools significantly reduces, but importantly only in part, both cell motility and cellular invasion in different trophoblastic cell lines, as well as primary EVTs. Interestingly, this loss in cellular motility/invasion did not result in changes to the overall actin organisation and focal adhesion complexes. These findings shed new light on at least two newly characterized pathways by which S100P promotes trophoblast cellular motility and invasion. One where cellular S100P levels involve the remodelling of focal adhesions whilst another, an extracellular pathway, appears to be focal adhesion independent. Both pathways could lead to the identification of novel targets that may explain why significant numbers of confirmed human pregnancies suffer complications through poor placental implantation.
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Affiliation(s)
- Tara Lancaster
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (T.L.); (M.E.A.T.); (M.R.)
| | - Maral E. A. Tabrizi
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (T.L.); (M.E.A.T.); (M.R.)
| | - Mariaelena Repici
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (T.L.); (M.E.A.T.); (M.R.)
| | - Janesh Gupta
- Institute of Metabolism and Systems Research, The University of Birmingham, Birmingham B15 2TT, UK;
- Fetal Medicine Centre, Birmingham Women’s NHS Foundation Trust, Birmingham B15 2TT, UK
| | - Stephane R. Gross
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (T.L.); (M.E.A.T.); (M.R.)
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