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Fang J, Orobator ON, Olelewe C, Passeri G, Singh K, Awuah SG, Suntharalingam K. A Breast Cancer Stem Active Cobalt(III)-Cyclam Complex Containing Flufenamic Acid with Immunogenic Potential. Angew Chem Int Ed Engl 2024; 63:e202317940. [PMID: 38063406 PMCID: PMC10952489 DOI: 10.1002/anie.202317940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Indexed: 12/31/2023]
Abstract
The cytotoxic and immunogenic-activating properties of a cobalt(III)-cyclam complex bearing the non-steroidal anti-inflammatory drug, flufenamic acid is reported within the context of anti-cancer stem cell (CSC) drug discovery. The cobalt(III)-cyclam complex 1 displays sub-micromolar potency towards breast CSCs grown in monolayers, 24-fold and 31-fold greater than salinomycin (an established anti-breast CSC agent) and cisplatin (an anticancer metallopharmaceutical), respectively. Strikingly, the cobalt(III)-cyclam complex 1 is 69-fold and 50-fold more potent than salinomycin and cisplatin towards three-dimensionally cultured breast CSC mammospheres. Mechanistic studies reveal that 1 induces DNA damage, inhibits cyclooxygenase-2 expression, and prompts caspase-dependent apoptosis. Breast CSCs treated with 1 exhibit damage-associated molecular patterns characteristic of immunogenic cell death and are phagocytosed by macrophages. As far as we are aware, 1 is the first cobalt complex of any oxidation state or geometry to display both cytotoxic and immunogenic-activating effects on breast CSCs.
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Affiliation(s)
- Jiaxin Fang
- School of ChemistryUniversity of LeicesterLeicesterUK
| | | | | | | | - Kuldip Singh
- School of ChemistryUniversity of LeicesterLeicesterUK
| | - Samuel G. Awuah
- Department of ChemistryUniversity of KentuckyLexingtonKYUSA
- Department of Pharmaceutical SciencesUniversity of KentuckyLexingtonKYUSA
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Ghobakhloo S, Khoshhali M, Vatandoost N, Jafarpour S, Niazmand A, Nedaeinia R, Salehi R. Clinical Implications and Prognostic Value of Leucine-Rich G Protein-Coupled Receptor 5 Expression as A Cancer Stem Cell Marker in Malignancies: A Systematic Review and Meta-Analysis. Cell J 2024; 26:1-12. [PMID: 38351725 PMCID: PMC10864775 DOI: 10.22074/cellj.2023.2010157.1396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/08/2023] [Accepted: 11/18/2023] [Indexed: 02/18/2024]
Abstract
Leucine-rich G protein-coupled receptor 5 (LGR5) is a marker of cancer stem cells (CSCs) in various cancers. Based on different studies, conflicting reports exist on correlation between LGR5 expression and poor prognosis/ clinicopathological parameters in cancer patients. Therefore, our purpose in conducting this study was to investigate correlation between LGR5 expression and outcomes of cancer patients under study through a systematic review and meta-analysis. Relevant articles were searched and collected using EMBASE, PubMed, Science Direct, and Scopus databases until December 21, 2022. This study was conducted to examine correlation between LGR5 expression and different clinical outcomes, such as recurrence-free survival (RFS), disease-free survival (DFS), overall survival (OS), and clinicopathological characteristics of the included cancer patients. To achieve this, hazard ratios (HRs) with 95% confidence intervals (CIs) and odds ratios (ORs) with 95% CIs were used as statistical measures. A meta-analysis was conducted using STATA 12.0 software. Finally, 53 studies including 9523 patients met the inclusion criteria. Significantly, high-level expression of LGR5 was related to poor prognosis in terms of OS, higher tumor stage, presence of distant metastasis, and presence of lymph node metastasis. It was discovered through subgroup analysis that several factors, including the study area, evaluation method, and type of cancer, can influence the correlation between LGR5 expression and negative prognosis in cancer patients. According to the results of our study, LGR5 overexpression was related to poor OS in cancer patients. In addition, clinicopathological data indicated an unfavorable prognosis in cancer patients with high LGR5 expression. In conclusion, LGR5 may serve as a potential prognostic marker for predicting survival in certain cancer types.
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Affiliation(s)
- Sepideh Ghobakhloo
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehri Khoshhali
- Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nasimeh Vatandoost
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sima Jafarpour
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Anoosha Niazmand
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Nedaeinia
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rasoul Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran
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Jiang Y, Liang R, Li L, Guan J. Studies on the effect and mechanism of CD147 on melanoma stem cells. Allergol Immunopathol (Madr) 2024; 52:71-78. [PMID: 38186196 DOI: 10.15586/aei.v52i1.1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/13/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Melanoma is the most aggressive form of skin cancer. Melanoma stem cells (MSCs) are one of the driving forces of melanoma invasion and metastasis. Therefore, it is of great significance to explore the mechanisms that maintain the stemness of MSCs. In this study, CD147-positive (CD147+) MSCs derived from A375 cell line were characterized. METHODS Side population (SP) and non-SP cells were sorted from A375 cells. Quantitative real-time polymerase chain reaction and Western blot analysis were conducted to determine the expression of CD147 in SP and non-SP cells. Subsequently, CD147+ and CD147-negative (CD147-) cells were isolated from SP cells. Stem cell characteristics and metastatic potential of CD147+/- antigen-presenting cells were identified by sphere-forming, wound-healing, and transwell assays. Western blot analysis was performed to evaluate the protein levels of transforming growth factor-beta1 (TGFβ1) and neurogenic locus notch homolog protein 1 (Notch1) signaling pathway. Xenograft tumor experiments were conducted to investigate the tumorigenic capacity of CD147+ cells in vivo. RESULTS CD147 was highly expressed in SP cells of A375 cell line. CD147+ cells have stronger abilities for sphere forming, migration, and invasion in vitro. The protein levels of TGFβ1, notch1, jagged1, and Hes1 were higher in CD147+ cells than in CD147- cells. Moreover, the CD147+ cells showed stronger tumorigenic and metastatic potential in vivo. CONCLUSION SP cells of A375 cell line expressed high levels of CD147, and CD147+ SP cells possessed much stronger stem-like characteristics and motility, which is linked to the activation of TGFβ and notch pathways.
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Affiliation(s)
- Yuan Jiang
- Department of Wound Healing and Plastic and Reconstruction Surgery, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang Province, China
| | - Renyi Liang
- Department of Tumor Radiotherapy and Chemotherapy, Lishui City People's Hospital, Lishui, Zhejiang Province, China
| | - Liqun Li
- Department of Plastic Surgery, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China;
| | - Jian Guan
- Department of Wound Healing and Plastic and Reconstruction Surgery, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang Province, China;
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Feng Y, Cai L, Pook M, Liu F, Chang CH, Mouti MA, Nibhani R, Militi S, Dunford J, Philpott M, Fan Y, Fan GC, Liu Q, Qi J, Wang C, Hong W, Morgan H, Wang M, Sadayappan S, Jegga AG, Oppermann U, Wang Y, Huang W, Jiang L, Pauklin S. BRD9-SMAD2/3 Orchestrates Stemness and Tumorigenesis in Pancreatic Ductal Adenocarcinoma. Gastroenterology 2024; 166:139-154. [PMID: 37739089 DOI: 10.1053/j.gastro.2023.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND & AIMS The dismal prognosis of pancreatic ductal adenocarcinoma (PDAC) is linked to the presence of pancreatic cancer stem-like cells (CSCs) that respond poorly to current chemotherapy regimens. The epigenetic mechanisms regulating CSCs are currently insufficiently understood, which hampers the development of novel strategies for eliminating CSCs. METHODS By small molecule compound screening targeting 142 epigenetic enzymes, we identified that bromodomain-containing protein BRD9, a component of the BAF histone remodeling complex, is a key chromatin regulator to orchestrate the stemness of pancreatic CSCs via cooperating with the TGFβ/Activin-SMAD2/3 signaling pathway. RESULTS Inhibition and genetic ablation of BRD9 block the self-renewal, cell cycle entry into G0 phase and invasiveness of CSCs, and improve the sensitivity of CSCs to gemcitabine treatment. In addition, pharmacological inhibition of BRD9 significantly reduced the tumorigenesis in patient-derived xenografts mouse models and eliminated CSCs in tumors from pancreatic cancer patients. Mechanistically, inhibition of BRD9 disrupts enhancer-promoter looping and transcription of stemness genes in CSCs. CONCLUSIONS Collectively, the data suggest BRD9 as a novel therapeutic target for PDAC treatment via modulation of CSC stemness.
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Affiliation(s)
- Yuliang Feng
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Liuyang Cai
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Guangdong, China
| | - Martin Pook
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Feng Liu
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Chao-Hui Chang
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Mai Abdel Mouti
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Reshma Nibhani
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Stefania Militi
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - James Dunford
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Martin Philpott
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio; Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Guo-Chang Fan
- Departments of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Qi Liu
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Jun Qi
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Cheng Wang
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Wanzi Hong
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, China
| | - Hannah Morgan
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio
| | - Mingyang Wang
- College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
| | - Sakthivel Sadayappan
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Department of Computer Science, University of Cincinnati College of Engineering, Cincinnati, Ohio
| | - Udo Oppermann
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Oxford Translational Myeloma Centre, Botnar Research Centre, Oxford, United Kingdom
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio.
| | - Wei Huang
- Heart, Lung and Vascular Institute, Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio.
| | - Lei Jiang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, China.
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
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Yang Y, Zhu G, Yang L, Yang Y. Targeting CD24 as a novel immunotherapy for solid cancers. Cell Commun Signal 2023; 21:312. [PMID: 37919766 PMCID: PMC10623753 DOI: 10.1186/s12964-023-01315-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/13/2023] [Indexed: 11/04/2023] Open
Abstract
Cluster of differentiation 24 (CD24), a mucin-like highly glycosylated molecule has been extensively studied as a cancer stem cell marker in a variety of solid cancers. The functional role of CD24 is either fulfilled by combining with ligands or participating in signal transduction, which mediate the initiation and progression of neoplasms. Recently, CD24 was also described as an innate immune checkpoint with apparent significance in several types of solid cancers. Herein, we review the current understanding of the molecular fundamentals of CD24, the role of CD24 in tumorigenesis and cancer progression, the possibility as a promising therapeutic target and summarized different therapeutic agents or strategies targeting CD24 in solid cancers. Video Abstract.
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Affiliation(s)
- Yan Yang
- Xinxiang Engineering Technology Research Center of Tumor-Targeted Drug Development, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453000, Henan, China
| | - Guangming Zhu
- Clinical Laboratory, The First People's Hospital of Taian, Taian 271000, Shandong, China
| | - Li Yang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou Key Laboratory of Endometrial Disease Prevention and Treatment Zhengzhou China, Zhengzhou, 450052, Henan, China
| | - Yun Yang
- Xinxiang Engineering Technology Research Center of Tumor-Targeted Drug Development, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453000, Henan, China.
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Desette A, Guichet PO, Emambux S, Masliantsev K, Cortes U, Ndiaye B, Milin S, George S, Faigner M, Tisserand J, Gaillard A, Brot S, Wager M, Tougeron D, Karayan-Tapon L. Deciphering Brain Metastasis Stem Cell Properties From Colorectal Cancer Highlights Specific Stemness Signature and Shared Molecular Features. Cell Mol Gastroenterol Hepatol 2023; 16:757-782. [PMID: 37482243 PMCID: PMC10520365 DOI: 10.1016/j.jcmgh.2023.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND & AIMS Brain metastases (BMs) from colorectal cancer (CRC) are associated with significant morbidity and mortality, with chemoresistance and short overall survival. Migrating cancer stem cells with the ability to initiate BM have been described in breast and lung cancers. In this study, we describe the identification and characterization of cancer stem cells in BM from CRC. METHODS Four brain metastasis stem cell lines from patients with colorectal cancer (BM-SC-CRC1 to BM-SC-CRC4) were obtained by mechanical dissociation of patient's tumors and selection of cancer stem cells by appropriate culture conditions. BM-SC-CRCs were characterized in vitro by clonogenic and limiting-dilution assays, as well as immunofluorescence and Western blot analyses. In ovo, a chicken chorioallantoic membrane (CAM) model and in vivo, xenograft experiments using BALB/c-nude mice were realized. Finally, a whole exome and RNA sequencing analyses were performed. RESULTS BM-SC-CRC formed metaspheres and contained tumor-initiating cells with self-renewal properties. They expressed stem cell surface markers (CD44v6, CD44, and EpCAM) in serum-free medium and CRC markers (CK19, CK20 and CDX-2) in fetal bovine serum-enriched medium. The CAM model demonstrated their invasive and migratory capabilities. Moreover, mice intracranial xenotransplantation of BM-SC-CRCs adequately recapitulated the original patient BM phenotype. Finally, transcriptomic and genomic approaches showed a significant enrichment of invasiveness and specific stemness signatures and highlighted KMT2C as a potential candidate gene to potentially identify high-risk CRC patients. CONCLUSIONS This original study represents the first step in CRC BM initiation and progression comprehension, and further investigation could open the way to new therapeutics avenues to improve patient prognosis.
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Affiliation(s)
- Amandine Desette
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France.
| | - Pierre-Olivier Guichet
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France
| | - Sheik Emambux
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Service d'oncologie médicale, CHU de Poitiers, Poitiers, France
| | - Konstantin Masliantsev
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France
| | - Ulrich Cortes
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France
| | - Birama Ndiaye
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France
| | - Serge Milin
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Service d'Anatomie et de Cytologie Pathologiques, CHU de Poitiers, Poitiers, France
| | - Simon George
- MGX-Montpellier GenomiX, Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Mathieu Faigner
- Service d'oncologie médicale, CHU de Poitiers, Poitiers, France
| | | | - Afsaneh Gaillard
- Université de Poitiers, CHU de Poitiers, INSERM, LNEC, Poitiers, France
| | - Sébastien Brot
- Université de Poitiers, CHU de Poitiers, INSERM, LNEC, Poitiers, France
| | - Michel Wager
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Service de Neurochirurgie, CHU de Poitiers, Poitiers, France
| | - David Tougeron
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Service d'hépato-gastro-entérologie, CHU de Poitiers, Poitiers, France
| | - Lucie Karayan-Tapon
- Université de Poitiers, CHU Poitiers, ProDiCeT, UR 24144, Poitiers, France; Laboratoire de Cancérologie Biologique, CHU de Poitiers, Poitiers, France
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Wang B, Zhou Y, Zhang P, Li J, Lu X. Solasonine Inhibits Cancer Stemness and Metastasis by Modulating Glucose Metabolism via Wnt/β-Catenin/Snail Pathway in Osteosarcoma. Am J Chin Med 2023:1-16. [PMID: 37367817 DOI: 10.1142/s0192415x23500593] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Solasonine (SS) is a natural glycoalkaloid compound that has been reported to possess a significant anticancer function. However, its anticancer effects and related mechanisms in osteosarcoma (OS) have not been studied. This study sought to investigate the impact of SS on the growth of OS cells. OS cells were treated with different concentrations of SS for 24[Formula: see text]h, and the results showed that SS attenuated the survival of OS cells in a dose-dependent manner. Additionally, SS suppressed cancer stem-like properties and epithelial-mesenchymal transition (EMT) by inhibiting aerobic glycolysis in OS cells in an ALDOA-dependent manner. Additionally, SS reduced the levels of Wnt3a, [Formula: see text]-catenin, and Snail in OS cells in vitro. Furthermore, Wnt3a activation reversed the SS-induced inhibition of glycolysis in OS cells. Collectively, this study discovered a novel effect of SS in inhibiting aerobic glycolysis, in addition to cancer stem-like features and EMT, implying that SS could be a therapeutic candidate for OS treatment.
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Affiliation(s)
- Bangjun Wang
- Department of Emergency, Xiangyang Central Hospital of Hubei University of Arts and Science, Hubei, Xiangyang 441021, P. R. China
| | - Yi Zhou
- Department of Emergency, Xiangyang Central Hospital of Hubei University of Arts and Science, Hubei, Xiangyang 441021, P. R. China
| | - Peng Zhang
- Department of Emergency, Xiangyang Central Hospital of Hubei University of Arts and Science, Hubei, Xiangyang 441021, P. R. China
| | - Jun Li
- Department of Emergency, Xiangyang Central Hospital of Hubei University of Arts and Science, Hubei, Xiangyang 441021, P. R. China
| | - Xinyan Lu
- Department of Emergency, Xiangyang Central Hospital of Hubei University of Arts and Science, Hubei, Xiangyang 441021, P. R. China
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Chen ZY, Huang HH, Li QC, Zhan FB, Wang LB, He T, Yang CH, Wang Y, Zhang Y, Quan ZX. Capsaicin Reduces Cancer Stemness and Inhibits Metastasis by Downregulating SOX2 and EZH2 in Osteosarcoma. Am J Chin Med 2023:1-26. [PMID: 37120706 DOI: 10.1142/s0192415x23500489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Metastasis of osteosarcoma is an important adverse factor affecting patients' survival, and cancer stemness is the crucial cause of distant metastasis. Capsaicin, the main component of pepper, has been proven in our previous work to inhibit osteosarcoma proliferation and enhance its drug sensitivity to cisplatin at low concentrations. This study aims to further explore the anti-osteosarcoma effect of capsaicin at low concentrations (100[Formula: see text][Formula: see text]M, 24[Formula: see text]h) on stemness and metastasis. The stemness of human osteosarcoma (HOS) cells was decreased significantly by capsaicin treatment. Additionally, the capsaicin treatment's inhibition of cancer stem cells (CSCs) was dose-dependent on both sphere formation and sphere size. Meanwhile, capsaicin inhibited invasion and migration, which might be associated with 25 metastasis-related genes. SOX2 and EZH2 were the most two relevant stemness factors for capsaicin's dose-dependent inhibition of osteosarcoma. The mRNAsi score of HOS stemness inhibited by capsaicin was strongly correlated with most metastasis-related genes of osteosarcoma. Capsaicin downregulated six metastasis-promoting genes and up-regulated three metastasis-inhibiting genes, which significantly affected the overall survival and/or disease-free survival of patients. In addition, the CSC re-adhesion scratch assay demonstrated that capsaicin inhibited the migration ability of osteosarcoma by inhibiting its stemness. Overall, capsaicin exerts a significant inhibitory effect on the stemness expression and metastatic ability of osteosarcoma. Moreover, it can inhibit the migratory ability of osteosarcoma by suppressing its stemness via downregulating SOX2 and EZH2. Therefore, capsaicin is expected to be a potential drug against osteosarcoma metastasis due to its ability to inhibit cancer stemness.
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Affiliation(s)
- Zhi-Yu Chen
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Huan-Huan Huang
- Department of Nursing, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Qiao-Chu Li
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Fang-Biao Zhan
- Department of Orthopedics, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing 404000, P. R. China
| | - Ling-Bang Wang
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Tao He
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Chao-Hua Yang
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Yang Wang
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
| | - Yuan Zhang
- Department of Orthopaedics, Children's Hospital of Chongqing Medical University, Chongqing 400014, P. R. China
- Ministry of Education Key Laboratory of Child, Children's Hospital of Chongqing Medical University, Chongqing 400014, P. R. China
| | - Zheng-Xue Quan
- Orthopedic Laboratory of Chongqing Medical University, Chongqing 40016, P. R. China
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P. R. China
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Alsayed RKME, Sheikhan KSAM, Alam MA, Buddenkotte J, Steinhoff M, Uddin S, Ahmad A. Epigenetic programing of cancer stemness by transcription factors-non-coding RNAs interactions. Semin Cancer Biol 2023; 92:74-83. [PMID: 37054905 DOI: 10.1016/j.semcancer.2023.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/30/2023] [Accepted: 04/09/2023] [Indexed: 04/15/2023]
Abstract
Cancer 'stemness' is fundamental to cancer existence. It defines the ability of cancer cells to indefinitely perpetuate as well as differentiate. Cancer stem cell populations within a growing tumor also help evade the inhibitory effects of chemo- as well as radiation-therapies, in addition to playing an important role in cancer metastases. NF-κB and STAT-3 are representative transcription factors (TFs) that have long been associated with cancer stemness, thus presenting as attractive targets for cancer therapy. The growing interest in non-coding RNAs (ncRNAs) in the recent years has provided further insight into the mechanisms by which TFs influence cancer stem cell characteristics. There is evidence for a direct regulation of TFs by ncRNAs, such as, microRNAs (miRNAs), long non-coding RNAs (lncRNAs) as well as circular RNAs (circRNAs), and vice versa. Additionally, the TF-ncRNAs regulations are often indirect, involving ncRNA-target genes or the sponging of other ncRNA species by individual ncRNAs. The information is rapidly evolving and this review provides a comprehensive review of TF-ncRNAs interactions with implications on cancer stemness and in response to therapies. Such knowledge will help uncover the many levels of tight regulations that control cancer stemness, providing novel opportunities and targets for therapy in the process.
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Affiliation(s)
- Reem Khaled M E Alsayed
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar
| | | | - Majid Ali Alam
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha, 3050, Qatar
| | - Jorg Buddenkotte
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha, 3050, Qatar
| | - Martin Steinhoff
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha, 3050, Qatar; Weill Cornell Medicine-Qatar, Medical School, Doha, 24144, Qatar; Dept. of Dermatology, Weill Cornell Medicine, New York, 10065, NY, USA
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Laboratory Animal Research Center, Qatar University, Doha, 2713, Qatar
| | - Aamir Ahmad
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha, 3050, Qatar.
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10
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Wang J, Yu H, Dong W, Zhang C, Hu M, Ma W, Jiang X, Li H, Yang P, Xiang D. N6-Methyladenosine-Mediated Up-Regulation of FZD10 Regulates Liver Cancer Stem Cells' Properties and Lenvatinib Resistance Through WNT/β-Catenin and Hippo Signaling Pathways. Gastroenterology 2023; 164:990-1005. [PMID: 36764493 DOI: 10.1053/j.gastro.2023.01.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 12/21/2022] [Accepted: 01/30/2023] [Indexed: 02/12/2023]
Abstract
BACKGROUND & AIMS Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related deaths worldwide, but there is a deficiency of early diagnosis biomarkers and therapeutic targets. Drug resistance accounts for most HCC-related deaths, yet the mechanisms underlying drug resistance remain poorly understood. METHODS Expression of Frizzled-10 (FZD10) in liver cancer stem cells (CSCs) was identified by means of RNA sequencing and validated by means of real-time polymerase chain reaction and immunohistochemistry. In vitro and in vivo experiments were used to assess the effect of FZD10 on liver CSC expansion and lenvatinib resistance. RNA sequencing, RNA binding protein immunoprecipitation, and luciferase report assays were applied to explore the mechanism underlying FZD10-mediated liver CSCs expansion and lenvatinib resistance. RESULTS Activation of FZD10 in liver CSCs was mediated by METTL3-dependent N6-methyladenosine methylation of FZD10 messenger RNA. Functional studies revealed that FZD10 promotes self-renewal, tumorigenicity, and metastasis of liver CSCs via activating β-catenin and YAP1. The FZD10-β-catenin/YAP1 axis is activated in liver CSCs and predicts poor prognosis. Moreover, FZD10-β-catenin/c-Jun axis transcriptionally activates METTL3 expression, forming a positive feedback loop. Importantly, the FZD10/β-catenin/c-Jun/MEK/ERK axis determines the responses of hepatoma cells to lenvatinib treatment. Analysis of patient cohort, patient-derived tumor organoids, and patient-derived xenografts further suggest that FZD10 might predict lenvatinib clinical benefit in patients with HCC. Furthermore, treatment of lenvatinib-resistant HCC with adeno-associated virus targeting FZD10 or a β-catenin inhibitor restored lenvatinib response. CONCLUSIONS Elevated FZD10 expression promotes expansion of liver CSCs and lenvatinib resistance, indicating that FZD10 expression is a novel prognostic biomarker and therapeutic target for human HCC.
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Affiliation(s)
- Jinghan Wang
- Department of Hepatobiliary Surgery, East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hongming Yu
- Department of Hepatic Surgery, Third Affiliated Hospital of Naval Military Medical University, Shanghai, China
| | - Wei Dong
- Department of Pathology, Third Affiliated Hospital of Naval Military Medical University, Shanghai, China
| | - Cheng Zhang
- Department of Gastroenterology, Bethune International Peace Hospital, Shijiazhuang, Hebei, China
| | - Mingtai Hu
- Department of Hepatobiliary Surgery, East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wencong Ma
- Department of Hepatobiliary Surgery, East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiaoqing Jiang
- Department of Hepatic Surgery, Third Affiliated Hospital of Naval Military Medical University, Shanghai, China.
| | - Hengyu Li
- Department of Breast and Thyroid Surgery, Changhai Hospital, Naval Military Medical University, Shanghai, China.
| | - Pinghua Yang
- Department of Hepatic Surgery, Third Affiliated Hospital of Naval Military Medical University, Shanghai, China.
| | - Daimin Xiang
- Department of Hepatobiliary Surgery, East Hospital, School of Medicine, Tongji University, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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11
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Parejo-Alonso B, Royo-García A, Espiau-Romera P, Courtois S, Curiel-García Á, Zagorac S, Villaoslada I, Olive KP, Heeschen C, Sancho P. Pharmacological targeting of the receptor ALK inhibits tumorigenicity and overcomes chemoresistance in pancreatic ductal adenocarcinoma. Biomed Pharmacother 2023; 158:114162. [PMID: 36571997 DOI: 10.1016/j.biopha.2022.114162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an extremely aggressive disease characterized by its metastatic potential and chemoresistance. These traits are partially attributable to the highly tumorigenic pancreatic cancer stem cells (PaCSCs). Interestingly, these cells show unique features in order to sustain their identity and functionality, some of them amenable for therapeutic intervention. Screening of phospho-receptor tyrosine kinases revealed that PaCSCs harbored increased activation of anaplastic lymphoma kinase (ALK). We subsequently demonstrated that oncogenic ALK signaling contributes to tumorigenicity in PDAC patient-derived xenografts (PDXs) by promoting stemness through ligand-dependent activation. Indeed, the ALK ligands midkine (MDK) or pleiotrophin (PTN) increased self-renewal, clonogenicity and CSC frequency in several in vitro local and metastatic PDX models. Conversely, treatment with the clinically-approved ALK inhibitors Crizotinib and Ensartinib decreased PaCSC content and functionality in vitro and in vivo, by inducing cell death. Strikingly, ALK inhibitors sensitized chemoresistant PaCSCs to Gemcitabine, as the most used chemotherapeutic agent for PDAC treatment. Consequently, ALK inhibition delayed tumor relapse after chemotherapy in vivo by effectively decreasing the content of PaCSCs. In summary, our results demonstrate that targeting the MDK/PTN-ALK axis with clinically-approved inhibitors impairs in vivo tumorigenicity and chemoresistance in PDAC suggesting a new treatment approach to improve the long-term survival of PDAC patients.
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Affiliation(s)
- Beatriz Parejo-Alonso
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Alba Royo-García
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Pilar Espiau-Romera
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Sarah Courtois
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Álvaro Curiel-García
- Department of Medicine, Division of Digestive Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - Sladjana Zagorac
- Center for Stem Cells in Cancer & Ageing (Barts Cancer Institute), London, UK
| | - Isabel Villaoslada
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain; Aragon Institute of Engineering Research, Department of Mechanical Engineering, University of Zaragoza, Zaragoza, Spain
| | - Kenneth P Olive
- Department of Medicine, Division of Digestive Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - Christopher Heeschen
- Center for Single-Cell Omics and Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine, China; Pancreatic Cancer Heterogeneity, Candiolo Cancer Institute - FPO - IRCCS, Candiolo (Torino), Italy
| | - Patricia Sancho
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Hospital Universitario Miguel Servet, Zaragoza, Spain.
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12
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Saha S, Pradhan N, B N, Mahadevappa R, Minocha S, Kumar S. Cancer plasticity: Investigating the causes for this agility. Semin Cancer Biol 2023; 88:138-156. [PMID: 36584960 DOI: 10.1016/j.semcancer.2022.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/09/2022] [Accepted: 12/19/2022] [Indexed: 12/30/2022]
Abstract
Cancer is not a hard-wired phenomenon but an evolutionary disease. From the onset of carcinogenesis, cancer cells continuously adapt and evolve to satiate their ever-growing proliferation demands. This results in the formation of multiple subtypes of cancer cells with different phenotypes, cellular compositions, and consequently displaying varying degrees of tumorigenic identity and function. This phenomenon is referred to as cancer plasticity, during which the cancer cells exist in a plethora of cellular states having distinct phenotypes. With the advent of modern technologies equipped with enhanced resolution and depth, for example, single-cell RNA-sequencing and advanced computational tools, unbiased cancer profiling at a single-cell resolution are leading the way in understanding cancer cell rewiring both spatially and temporally. In this review, the processes and mechanisms that give rise to cancer plasticity include both intrinsic genetic factors such as epigenetic changes, differential expression due to changes in DNA, RNA, or protein content within the cancer cell, as well as extrinsic environmental factors such as tissue perfusion, extracellular milieu are detailed and their influence on key cancer plasticity hallmarks such as epithelial-mesenchymal transition (EMT) and cancer cell stemness (CSCs) are discussed. Due to therapy evasion and drug resistance, tumor heterogeneity caused by cancer plasticity has major therapeutic ramifications. Hence, it is crucial to comprehend all the cellular and molecular mechanisms that control cellular plasticity. How this process evades therapy, and the therapeutic avenue of targeting cancer plasticity must be diligently investigated.
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Affiliation(s)
- Shubhraneel Saha
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Nikita Pradhan
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Neha B
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ravikiran Mahadevappa
- Department of Biotechnology, School of Science, Gandhi Institute of Technology and Management, Deemed to be University, Bengaluru, Karnataka 562163, India
| | - Shilpi Minocha
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Saran Kumar
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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13
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Metropulos AE, Becker JH, Principe DR. Chromium (VI) promotes lung cancer initiation by activating EGF/ALDH1A1 signalling. Clin Transl Discov 2022; 2:e155. [PMID: 37396570 PMCID: PMC10312984 DOI: 10.1002/ctd2.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 07/04/2023]
Abstract
Lung cancer is the leading cause of cancer-related death worldwide and is strongly associated with tobacco smoke exposure. Though smoking remains the most important and best studied risk factor, recent data suggests that several other carcinogens have a driving role in lung cancer development, particularly in select populations at risk of high or prolonged exposure. Hexavalent chromium [Cr(VI)] is a known carcinogen that is widely used in the manufacturing industry. While the link between Cr(VI) and lung cancer incidence is well-accepted, the mechanisms through which Cr(VI) promotes lung cancer development are poorly understood. In the present study by Ge and colleagues published in Clinical and Translational Medicine, the authors explored the effects of prolonged Cr(VI) on non-malignant lung epithelial cells. They determined that Cr(VI) initiates lung tumorigenesis by transforming a subpopulation of stem-like, tumor initiating cells with increased expression of Aldehyde dehydrogenase 1 family member A1 (ALDH1A1). The observed increase in ALDH1A1 was dependent on transcriptional upregulation via Krüppel-like factor 4 (KLF4), and associated with enhanced Epidermal Growth Factor (EGF) biosynthesis. Cr(VI)-transformed tumor initiating cells accelerated tumor formation in vivo, which was ameliorated by therapeutic inhibition of ALDH1A1. Importantly, ALDH1A1 inhibition also sensitized Cr(VI)-driven tumors to Gemcitabine chemotherapy and extended overall survival in mice. This study not only offers novel insight into the mechanisms through which Cr(VI) exposure initiates lung tumorigenesis, but identifies a potential therapeutic target for patients with lung cancer secondary to Cr(VI) exposure. Additionally, this study underscores the importance of limiting exposure to Cr(VI) in the workplace and finding safer alternatives for use in the manufacturing industry.
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Affiliation(s)
| | - Jeffrey H. Becker
- Department of Surgery, University of Illinois at Chicago, Chicago, IL USA
| | - Daniel R. Principe
- Medical Scientist Training Program, University of Illinois College of Medicine, Chicago, IL USA
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14
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Gor R, Saha L, Agarwal S, Karri U, Sohani A, Madhavan T, Pachaiappan R, Ramalingam S. Morin inhibits colon cancer stem cells by inhibiting PUM1 expression in vitro. Med Oncol 2022; 39:251. [PMID: 36224472 DOI: 10.1007/s12032-022-01851-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 09/01/2022] [Indexed: 11/30/2022]
Abstract
Over the last few decades, the number of people diagnosed with cancer has increased dramatically every year, making it a major cause of mortality today. Colon cancer is the third most common cancer worldwide, and the second in mortality rate. Current cancer treatment fails to treat colon cancer completely due to the remains of Cancer Stem Cells (CSCs). Morin flavonoid present in figs (Ficus carica) and other plant sources, was found to have an anti-proliferative effect on the colon cancer model and cell line, but it is not studied for its effect on the colon CSCs. In this study, we have tested the potency of morin to inhibit CSCs. We found that morin has significantly reduced colon cancer cell proliferation, colony formation, migration, and colonospheroid formation in a dose-dependent manner. Pumilio-1 (PUM1) has been shown to play an important role in colon CSCs maintenance. We found that morin has a good binding affinity with PUM1 protein with one hydrophobic and two hydrogen bond interactions. Further, the immunofluorescence results have also shown a reduction in PUM1 expression in colon cancer cell lines after morin treatment. CD133 is overexpressed in colon CSCs and morin treatment has reduced the CD133 expression in HCT116 and CT26 colon cancer cell lines. Our research outcome has explored the anti-cancer stem cell potency of morin via targeting the PUM1 protein and further reducing the colon spheroids formation and reducing the CD133 expression in colon cancer cells.
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Affiliation(s)
- Ravi Gor
- Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Linkon Saha
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Sparsh Agarwal
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Urekha Karri
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Advait Sohani
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Thirumurthy Madhavan
- Department of Genetic Engineering, Computational Biology Laboratory, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Raman Pachaiappan
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - Satish Ramalingam
- Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
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15
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Abstract
The physiological state of the tumor microenvironment (TME) plays a central role in cancer development due to multiple universal features that transcend heterogeneity and niche specifications, like promoting cancer progression and metastasis. As a result of their preponderant involvement in tumor growth and maintenance through several microsystemic alterations, including hypoxia, oxidative stress, and acidosis, TMEs make for ideal targets in both diagnostic and therapeutic ventures. Correspondingly, methodologies to target TMEs have been investigated this past decade as stratagems of significant potential in the genre of focused cancer treatment. Within targeted oncotherapy, nanomedical derivates-nanocarriers (NCs) especially-have emerged to present notable prospects in enhancing targeting specificity. Yet, one major issue in the application of NCs in microenvironmental directed therapy is that TMEs are too broad a spectrum of targeting possibilities for these carriers to be effectively employed. However, cancer stem cells (CSCs) might portend a solution to the above conundrum: aside from being quite heavily invested in tumorigenesis and therapeutic resistance, CSCs also show self-renewal and fluid clonogenic properties that often define specific TME niches. Further scrutiny of the relationship between CSCs and TMEs also points towards mechanisms that underly tumoral characteristics of metastasis, malignancy, and even resistance. This review summarizes recent advances in NC-enabled targeting of CSCs for more holistic strikes against TMEs and discusses both the current challenges that hinder the clinical application of these strategies as well as the avenues that can further CSC-targeting initiatives. Central role of CSCs in regulation of cellular components within the TME.
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Affiliation(s)
- Aadya Nayak
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Neerada Meenakshi Warrier
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Praveen Kumar
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
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16
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Jain P, Duddu AS, Jolly MK. Stochastic population dynamics of cancer stemness and adaptive response to therapies. Essays Biochem 2022:EBC20220038. [PMID: 36073715 DOI: 10.1042/EBC20220038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 02/07/2023]
Abstract
Intratumoral heterogeneity can exist along multiple axes: Cancer stem cells (CSCs)/non-CSCs, drug-sensitive/drug-tolerant states, and a spectrum of epithelial-hybrid-mesenchymal phenotypes. Further, these diverse cell-states can switch reversibly among one another, thereby posing a major challenge to therapeutic efficacy. Therefore, understanding the origins of phenotypic plasticity and heterogeneity remains an active area of investigation. While genomic components (mutations, chromosomal instability) driving heterogeneity have been well-studied, recent reports highlight the role of non-genetic mechanisms in enabling both phenotypic plasticity and heterogeneity. Here, we discuss various processes underlying phenotypic plasticity such as stochastic gene expression, chromatin reprogramming, asymmetric cell division and the presence of multiple stable gene expression patterns ('attractors'). These processes can facilitate a dynamically evolving cell population such that a subpopulation of (drug-tolerant) cells can survive lethal drug exposure and recapitulate population heterogeneity on drug withdrawal, leading to relapse. These drug-tolerant cells can be both pre-existing and also induced by the drug itself through cell-state reprogramming. The dynamics of cell-state transitions both in absence and presence of the drug can be quantified through mathematical models. Such a dynamical systems approach to elucidating patterns of intratumoral heterogeneity by integrating longitudinal experimental data with mathematical models can help design effective combinatorial and/or sequential therapies for better clinical outcomes.
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17
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Lazer LM, Kesavan Y, Gor R, Ramachandran I, Pathak S, Narayan S, Anbalagan M, Ramalingam S. Targeting colon cancer stem cells using novel doublecortin like kinase 1 antibody functionalized folic acid conjugated hesperetin encapsulated chitosan nanoparticles. Colloids Surf B Biointerfaces 2022; 217:112612. [PMID: 35738074 DOI: 10.1016/j.colsurfb.2022.112612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 05/25/2022] [Accepted: 06/02/2022] [Indexed: 01/05/2023]
Abstract
The cancer stem cell (CSC) hypothesis is an evolving oncogenesis concept. CSCs have a distinct ability to self-renew themselves and also give rise to a phenotypically diverse population of cells. Targeting CSCs represents a promising strategy for cancer treatment. Plant-derived compounds are potent in restricting the expansion of CSCs. DCLK1 has been already reported as a colon CSC specific marker. Nanoparticles can effectively inhibit multiple types of CSCs by targeting specific markers. We have synthesized DCLK1 functionalized folic acid conjugated hesperetin encapsulated chitosan nanoparticles (CFH-DCLK1), specifically to target CSCs. In this regard, we have performed proliferation assay, colony formation assay, cell migration assay, apoptosis assay, flow cytometry analysis, real-time RT- PCR and western blot analyses to determine the effect of CFH-DCLK1 and CFH nanoparticles in HCT116-colon cancer cells. In our study, we have determined the median inhibitory concentration (IC50) of CFH (47.8 µM) and CFH-DCLK1 (4.8 µM) nanoparticles in colon cancer cells. CFH-DCLK1 nanoparticles induced apoptosis and inhibited the migration and invasion of colon cancer cells. Real time PCR and western blot results have demonstrated that the treatment with CFH-DCLK1 nanoparticles significantly reduced the expression of CSC markers such as DCLK1, STAT1 and NOTCH1 compared to the CFH alone in HCT116 colon cancer cells. Finally, in the 3D spheroid model, CFH-DCLK1 nanoparticles significantly inhibited the colonosphere growth. Overall, our results highlight the effectiveness of CFH-DCLK1 nanoparticles in targeting the colon cancer cells and CSCs. This study would lead to the development of therapies targeting both cancer cells and CSCs simultaneously using nanoformulated drugs, which could bring changes in the current cancer treatment strategies.
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Affiliation(s)
- Lizha Mary Lazer
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram 603203, Tamil Nadu, India
| | - Yasodha Kesavan
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram 603203, Tamil Nadu, India
| | - Ravi Gor
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram 603203, Tamil Nadu, India
| | - Ilangovan Ramachandran
- Department of Endocrinology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600113, Tamil Nadu, India
| | - Surajit Pathak
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, 603103, India
| | - Shoba Narayan
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, 603103, India
| | - Muralidharan Anbalagan
- Structural & Cellular Biology, Pre-clinical small animal Imaging Facility, Tulane University School of Medicine, New Orleans, Louisiana, 70112, USA
| | - Satish Ramalingam
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram 603203, Tamil Nadu, India.
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Izadpanah A, Delirezh N, Mahmodlou R. Ex vivo Optimization of Glucose-Regulated Protein 94/Glycoprotein 96 Expressions in Mammospheres; Implication for Breast Cancer Immunotherapy. Cell J 2022; 24:261-266. [PMID: 35717566 PMCID: PMC9445520 DOI: 10.22074/cellj.2022.7908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 06/22/2021] [Indexed: 12/03/2022]
Abstract
OBJECTIVE The induction of immunity against cancer stem cells (CSCs) can boost the efficiency of cancer vaccines. Heat shock proteins (HSPs) are required for the successful activation of anti-tumor immune responses. Glycoprotein 96 (gp96) is a well-known HSP that promotes the cross-presentation of tumor antigens. The aim of the present study was to optimize the temperature for induction of gp96 in grade 3 breast cancer spheres. MATERIALS AND METHODS In the experimental study, CSCs were enriched from breast tumor tissue samples and cultured in DMEM-F12 with epidermal growth factor (EGF), basic fibroblast growth factor (bFGF), B27, and bovine serum albumin (BSA) for 22 days. The expression level of CD24 and CD44 as CSC markers was measured by flow cytometry in secondary mammospheres, and the expression of NANOG, SOX2, and OCT4 genes in CSCs was also analyzed using the real-time polymerase chain reaction (PCR). To find the optimal temperature regulation of gp96, the mammosphere was incubated at different temperatures for 1 hour, and gp96 expression was measured using the western blotting assay. RESULTS Primary mammospheres were obtained after seven days of culture, and secondary spheres formed 22 days after passage. Flow cytometry analysis showed that cells with CD24- CD44+ phenotype were enriched in the culture period (from 2.6% on day 1 to 32.6% on day 22). Real-time PCR indicated that OCT4, NANOG, and SOX2 expression in mammospheres were increased by 3.8 ± 0.6, 17.8 ± 0.6, and 7.7 ± 0.8 fold respectively in comparison to the MCF-7 cell line. Western blot analysis showed that gp96 production was significantly upregulated when mammospheres were incubated at both 42°C and 43°C in comparison to the control group. CONCLUSION Altogether, we found that heat-induced upregulated expression of gp96 in CSCs enriched mammospheres from breast tumor tissue might be used as a complementary procedure to generate more immunogenic antigens in immunotherapy settings.
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Affiliation(s)
- Amirhossein Izadpanah
- Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran,Department of Stem cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and
Technology, Tehran, Iran
| | - Nowruz Delirezh
- Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran,P.O.Box: 165Department of MicrobiologyFaculty of Veterinary MedicineUrmia UniversityUrmiaIran
| | - Rahim Mahmodlou
- Department of Surgery, Emam Khomeini General Hospital, Urmia, Iran
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19
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Kim TY, Kim S, Kim Y, Lee YS, Lee S, Lee SH, Kweon MN. A High-Fat Diet Activates the BAs-FXR Axis and Triggers Cancer-Associated Fibroblast Properties in the Colon. Cell Mol Gastroenterol Hepatol 2022; 13:1141-59. [PMID: 34971821 DOI: 10.1016/j.jcmgh.2021.12.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/21/2021] [Accepted: 12/21/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Dietary signals are known to modulate stemness and tumorigenicity of intestinal progenitors; however, the impact of a high-fat diet (HFD) on the intestinal stem cell (ISC) niche and its association with colorectal cancer remains unclear. Thus, we aimed to investigate how a HFD affects the ISC niche and its regulatory factors. METHODS Mice were fed a purified diet (PD) or HFD for 2 months. The expression levels of ISC-related markers, ISC-supportive signals, and Wnt2b were assessed with real-time quantitative polymerase chain reaction, in situ hybridization, and immunofluorescence staining. RNA sequencing and metabolic function were analyzed in mesenchymal stromal cells (MSCs) from PD- and HFD-fed mice. Fecal microbiota were analyzed by 16s rRNA sequencing. Bile salt hydrolase activity and bile acid (BA) levels were measured. RESULTS We found that expression of CD44 and Wnt signal-related genes was higher in the colonic crypts of HFD-fed mice than in those fed a PD. Within the ISC niche, MSCs were expanded and secreted predominant levels of Wnt2b in the colon of HFD-fed mice. Of note, increased energy metabolism and cancer-associated fibroblast (CAF)-like properties were found in the colonic MSCs of HFD-fed mice. Moreover, colonic MSCs from HFD-fed mice promoted the growth of tumorigenic properties and accelerated the expression of cancer stem cell (CSC)-related markers in colon organoids. In particular, production of primary and secondary BAs was increased through the expansion of bile salt hydrolase-encoding bacteria in HFD-fed mice. Most importantly, BAs-FXR interaction stimulated Wnt2b production in colonic CAF-like MSCs. CONCLUSIONS HFD-induced colonic CAF-like MSCs play an indispensable role in balancing the properties of CSCs through activation of the BAs-FXR axis.
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Nachiyappan A, Gupta N, Taneja R. EHMT1/EHMT2 in EMT, Cancer Stemness and Drug Resistance: Emerging Evidence and Mechanisms. FEBS J 2021; 289:1329-1351. [PMID: 34954891 DOI: 10.1111/febs.16334] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/25/2021] [Accepted: 12/23/2021] [Indexed: 11/29/2022]
Abstract
Metastasis, therapy failure and tumor recurrence are major clinical challenges in cancer. The interplay between tumor initiating cells (TICs) and Epithelial-Mesenchymal transition (EMT) drives tumor progression and spread. Recent advances have highlighted the involvement of epigenetic deregulation in these processes. The Euchromatin Histone Lysine Methyltransferase 1 (EHMT1) and Euchromatin Histone Lysine Methyltransferase 2 (EHMT2) that primarily mediate histone 3 lysine 9 di-methylation (H3K9me2), as well as methylation of non-histone proteins, are now recognized to be aberrantly expressed in many cancers. Their deregulated expression is associated with EMT, cellular plasticity and therapy resistance. In this review, we summarize evidence of their myriad roles in cancer metastasis, stemness and drug resistance. We discuss cancer-type specific molecular targets, context-dependent mechanisms and future directions of research in targeting EHMT1/EHMT2 for the treatment of cancer.
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Affiliation(s)
- Alamelu Nachiyappan
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117593
| | - Neelima Gupta
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117593
| | - Reshma Taneja
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117593.,Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, 117593
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21
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Nallasamy P, Nimmakayala RK, Karmakar S, Leon F, Seshacharyulu P, Lakshmanan I, Rachagani S, Mallya K, Zhang C, Ly QP, Myers MS, Josh L, Grabow CE, Gautam SK, Kumar S, Lele SM, Jain M, Batra SK, Ponnusamy MP. Pancreatic Tumor Microenvironment Factor Promotes Cancer Stemness via SPP1-CD44 Axis. Gastroenterology 2021; 161:1998-2013.e7. [PMID: 34418441 PMCID: PMC10069715 DOI: 10.1053/j.gastro.2021.08.023] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 07/14/2021] [Accepted: 08/14/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS Tumor-microenvironment factors and cancer stem cells (CSCs) play a critical role in the aggressiveness of pancreatic cancer (PC). However, the degree to which tumor-microenvironment factors promote stemness remains unexplored. Here, we examined whether cancer-associated fibroblasts (CAFs) promote CSC features in PC. METHODS PC cells were treated long-term (30, 60, and 90 days) with conditioned media (CM)-derived from normal human fibroblasts (NFs) and CAFs. The stemness features of tumorsphere formation and stemness populations, along with CSCs markers, were analyzed using 2-dimensional and 3-dimensional sodium alginate bead-based co-culture models. Immunohistochemistry and immunofluorescence staining were performed for CSCs and fibroblast markers in autochthonous KrasG12D/+; Trp53R172H/+; Pdx1-Cre mice and human pancreatic tumors. Polymerase chain reaction array and gene knockdown were performed to identify the mechanism of stemness enrichment. RESULTS Long-term treatment of PC cells with CAF-CM enriched stemness, as indicated by significantly higher CD44+, ALDH+, and AF+ populations in PC cells. Increased tumorsphere formation and elevated CSC, self-renewal, and drug-resistance markers in CAF-CM-treated PC cells were observed. In addition, CAFs co-cultured with PC cells in the 3-dimensional model showed a substantial increase in stemness features. CD44 and α-smooth muscle actin were positively correlated and their expressions progressively increased from the early to late stages of KrasG12D/+; Trp53R172H/+; Pdx1-Cre mouse and human pancreatic tumors. Osteopontin/secreted phosphoprotein 1 was identified as the top differentially overexpressed gene in CAF-CM-treated PC cells and knockdown of osteopontin/secreted phosphoprotein 1 significantly reduced stemness characteristics in CAF-CM-treated PC cells. CONCLUSIONS Our data uncovered novel insight into the interplay between CAF and enrichment of stemness population through the osteopontin/secreted phosphoprotein 1-CD44 axis in PC.
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Affiliation(s)
- Palanisamy Nallasamy
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Rama Krishna Nimmakayala
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Saswati Karmakar
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Frank Leon
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Parthasarathy Seshacharyulu
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Imayavaramban Lakshmanan
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Satyanarayana Rachagani
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kavita Mallya
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Chunmeng Zhang
- Division of Surgical Oncology, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska
| | - Quan P Ly
- Division of Surgical Oncology, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska
| | - Molly S Myers
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Lindenberger Josh
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Corinn E Grabow
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Shailendra K Gautam
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Sushil Kumar
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Subodh M Lele
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Eppley Institute for Research in Cancer and Allied Diseases, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Eppley Institute for Research in Cancer and Allied Diseases, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska.
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Eppley Institute for Research in Cancer and Allied Diseases, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska.
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22
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Frank MH, Wilson BJ, Gold JS, Frank NY. Clinical Implications of Colorectal Cancer Stem Cells in the Age of Single-Cell Omics and Targeted Therapies. Gastroenterology 2021; 160:1947-1960. [PMID: 33617889 PMCID: PMC8215897 DOI: 10.1053/j.gastro.2020.12.080] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 11/30/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023]
Abstract
The cancer stem cell (CSC) concept emerged from the recognition of inherent tumor heterogeneity and suggests that within a given tumor, in analogy to normal tissues, there exists a cellular hierarchy composed of a minority of more primitive cells with enhanced longevity (ie, CSCs) that give rise to shorter-lived, more differentiated cells (ie, cancer bulk populations), which on their own are not capable of tumor perpetuation. CSCs can be responsible for cancer therapeutic resistance to conventional, targeted, and immunotherapeutic treatment modalities, and for cancer progression through CSC-intrinsic molecular mechanisms. The existence of CSCs in colorectal cancer (CRC) was first established through demonstration of enhanced clonogenicity and tumor-forming capacity of this cell subset in human-to-mouse tumor xenotransplantation experiments and subsequently confirmed through lineage-tracing studies in mice. Surface markers for CRC CSC identification and their prospective isolation are now established. Therefore, the application of single-cell omics technologies to CSC characterization, including whole-genome sequencing, RNA sequencing, and epigenetic analyses, opens unprecedented opportunities to discover novel targetable molecular pathways and hence to develop novel strategies for CRC eradication. We review recent advances in this field and discuss the potential implications of next-generation CSC analyses for currently approved and experimental targeted CRC therapies.
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Affiliation(s)
- Markus H. Frank
- Transplant Research Program, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts;,Department of Dermatology, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts;,Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts;,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia
| | - Brian J. Wilson
- Transplant Research Program, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts;,Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts
| | - Jason S. Gold
- Department of Surgery, Veterans Affairs Boston Healthcare System, Boston, Massachusetts;,Department of Surgery, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Natasha Y. Frank
- Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts;,Department of Medicine, Veterans Affairs Boston Healthcare System, Boston, Massachusetts;,Division of Genetics, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts
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Abstract
Cancer stem cells (CSCs) are subpopulations of tumor cells that possess abilities for self-renewal, differentiation, and tumor initiation. These rare but therapy-recalcitrant cells are assumed to repopulate tumors following administration of systemic chemotherapy driving therapy failure, tumor recurrence, and disease progression. In early clinical trials, anti-CSC therapies have found limited success to-date possibly due to the inherent heterogeneity and plasticity of CSCs and the incomplete characterization of essential CSC targets. Here, we review the role of 3-phosphoinositide dependent protein kinase-1 (PDPK1) as an emerging CSC target. While most previous studies have relied on CSC models which are based on lineage and tissue-specific marker profiles to define the relationships between putative target and CSC traits, this review discusses PDPK1 and its role in CSC biology with an emphasis on CSC systems which are based on proposed function like label-retaining cancer cells (LRCCs).
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Affiliation(s)
- Bogdan Domrachev
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Sitanshu Singh
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Dandan Li
- Thoracic & GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Udo Rudloff
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.,Thoracic & GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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24
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Jun SY, Brown AJ, Chua NK, Yoon JY, Lee JJ, Yang JO, Jang I, Jeon SJ, Choi TI, Kim CH, Kim NS. Reduction of Squalene Epoxidase by Cholesterol Accumulation Accelerates Colorectal Cancer Progression and Metastasis. Gastroenterology 2021; 160:1194-1207.e28. [PMID: 32946903 DOI: 10.1053/j.gastro.2020.09.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/03/2020] [Accepted: 09/05/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Squalene epoxidase (SQLE), a rate-limiting enzyme in cholesterol biosynthesis, is suggested as a proto-oncogene. Paradoxically, SQLE is degraded by excess cholesterol, and low SQLE is associated with aggressive colorectal cancer (CRC). Therefore, we studied the functional consequences of SQLE reduction in CRC progression. METHODS Gene and protein expression data and clinical features of CRCs were obtained from public databases and 293 human tissues, analyzed by immunohistochemistry. In vitro studies showed underlying mechanisms of CRC progression mediated by SQLE reduction. Mice were fed a 2% high-cholesterol or a control diet before and after cecum implantation of SQLE genetic knockdown/control CRC cells. Metastatic dissemination and circulating cancer stem cells were demonstrated by in vivo tracking and flow cytometry analysis, respectively. RESULTS In vitro studies showed that SQLE reduction helped cancer cells overcome constraints by inducing the epithelial-mesenchymal transition required to generate cancer stem cells. Surprisingly, SQLE interacted with GSK3β and p53. Active GSK3β contributes to the stability of SQLE, thereby increasing cell cholesterol content, whereas SQLE depletion disrupted the GSK3β/p53 complex, resulting in a metastatic phenotype. This was confirmed in a spontaneous CRC metastasis mice model, where SQLE reduction, by a high-cholesterol regimen or genetic knockdown, strikingly promoted CRC aggressiveness through the production of migratory cancer stem cells. CONCLUSIONS We showed that SQLE reduction caused by cholesterol accumulation aggravates CRC progression via the activation of the β-catenin oncogenic pathway and deactivation of the p53 tumor suppressor pathway. Our findings provide new insights into the link between cholesterol and CRC, identifying SQLE as a key regulator in CRC aggressiveness and a prognostic biomarker.
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Affiliation(s)
- Soo Young Jun
- Medical Genomics Research Center, Daejon, Korea; Functional Genomics, University of Science and Technology, Daejeon, Korea
| | - Andrew J Brown
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Ngee Kiat Chua
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | | | | | - Jin Ok Yang
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - InSu Jang
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Su-Jin Jeon
- Medical Genomics Research Center, Daejon, Korea; Functional Genomics, University of Science and Technology, Daejeon, Korea
| | - Tae-Ik Choi
- Department of Biology, Chungnam National University, Daejeon, Korea
| | - Cheol-Hee Kim
- Department of Biology, Chungnam National University, Daejeon, Korea
| | - Nam-Soon Kim
- Medical Genomics Research Center, Daejon, Korea; Functional Genomics, University of Science and Technology, Daejeon, Korea.
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Fu C, Tian G, Duan J, Liu K, Zhang C, Yan W, Wang Y. Therapeutic Antitumor Efficacy of Cancer Stem Cell-Derived DRibble Vaccine on Colorectal Carcinoma. Int J Med Sci 2021; 18:3249-3260. [PMID: 34400894 PMCID: PMC8364449 DOI: 10.7150/ijms.61510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/12/2021] [Indexed: 12/13/2022] Open
Abstract
Dendritic cell (DC)-based immunotherapy has been a promising strategy for colon cancer therapy, but the efficacy of dendritic cell vaccines is in part limited by immunogenicity of loaded antigens. In this study, we aimed to identify a putative tumor antigen that can generate or enhance anti-tumor immune responses against colon cancer. CD44+ colon cancer stem cells (CCSCs) were isolated from mouse colorectal carcinoma CT-26 cell cultures and induced to form defective ribosomal products-containing autophagosome-rich blebs (DRibbles) by treatment with rapamycin, bortezomib, and ammonium chloride. DRibbles were characterized by western blot and transmission electron microscopy. DCs generated from the mice bone marrow monocytes were cocultured with DRibbles, then surface markers of DCs were analyzed by flow cytometry. Meanwhile, the efficacy of DRibble-DCs was examined in vivo. Our results showed that CCSC-derived DRibbles upregulated CD80, CD86, major histocompatibility complex (MHC)-I, and MHC-II on DCs and induced proliferation of mouse splenic lymphocytes and CD8+ T cells. In a model of colorectal carcinoma using BALB/c mice with robust tumor growth and mortality, DC vaccine pulsed with CCSC-derived DRibbles suppressed tumor growth and extended survival. A lactate dehydrogenase test indicated a strong cytolytic activity of cytotoxic T-cells derived from mice vaccinated with CCSC-derived DRibbles against CT-26 cells. Furthermore, flow cytometry analyses showed that the percentages of IFN-γ-producing CD8+ T-cells were increased in SD-DC group compare with the other groups. These findings provide a rationale for novel immunotherapeutic anti-tumor approaches based on DRibbles derived from colon cancer stem cells.
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Affiliation(s)
- Changhao Fu
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China.,Stanford University Medical School, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
| | - Geer Tian
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China
| | - Jinyue Duan
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China
| | - Kun Liu
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China
| | - Chen Zhang
- Institute of Oceanography, Minjiang University, Fuzhou, Fujian 350108, China
| | - Weiqun Yan
- Medical Institute of Regeneration Sciences, Jilin University, Changchun, Jilin 130021, China
| | - Yi Wang
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin 130021, China
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Rezaee M, Gheytanchi E, Madjd Z, Mehrazma M. Clinicopathological Significance of Tumor Stem Cell Markers ALDH1 and CD133 in Colorectal Carcinoma. Iran J Pathol 2020; 16:40-50. [PMID: 33391379 PMCID: PMC7691712 DOI: 10.30699/ijp.2020.127441.2389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/23/2020] [Indexed: 12/15/2022]
Abstract
Background & Objective: Colorectal cancer (CRC) is the third most common cancer worldwide with a high mortality rate. The main causes of death in patients are recurrence and metastasis which are mainly attributed to the small subpopulation of cells within tumors called cancer stem cells (CSCs). This study aimed to evaluate the correlation between the expression of ALDH1 and CD133 as CSC associated markers and clinicopathological characteristics in CRC. Methods: In this cross-sectional study, a total of 483 CRC tumor samples were immunohistochemically stained for detection of CD133 and ALDH1 markers. Correlations of marker expression with clinicopathological factors were also evaluated. Results: There was a significant correlation between the luminal intensity of CD133 and neural invasion (P=0.05) and between the cytoplasmic intensity of CD133 and metastasis (P=0.05). In terms of H-score, a positive significant relation was observed between cytoplasmic expression of CD133 and lymph node (P=0.02), neural (P=0.04) and vascular invasion (P=0.02). The ALDH1 cytoplasmic expression showed a significant correlation with tumor size (P=0.001). Conclusion: Our findings showed that increased expression of CD133 and ALDH1 is associated with tumor progression and worse outcomes in CRC patients. These markers can be good candidates for localized targeting of CSCs using antibodies. Future researches need to be improved approaches for early detection of CRC, and treatment monitoring for CRC and other cancers.
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Affiliation(s)
- Maryam Rezaee
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Elmira Gheytanchi
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mitra Mehrazma
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Department of Pathology, Hasheminejad Kidney Center, Iran University of Medical Sciences, Tehran, Iran
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Howard CM, Zgheib NB, Bush S, DeEulis T, Cortese A, Mollo A, Lirette ST, Denning K, Valluri J, Claudio PP. Clinical relevance of cancer stem cell chemotherapeutic assay for recurrent ovarian cancer. Transl Oncol 2020; 13:100860. [PMID: 32862103 PMCID: PMC7475270 DOI: 10.1016/j.tranon.2020.100860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/18/2020] [Accepted: 08/18/2020] [Indexed: 12/18/2022] Open
Abstract
Introduction Disease recurrence and progression of ovarian cancer is common with the development of platinum-resistant or refractory disease. This is due in large part to the presence of chemo-resistant cancer stem cells (CSCs) that contribute to tumor propagation, maintenance, and treatment resistance. We developed a CSCs drug cytotoxicity assay (ChemoID) to identify the most effective chemotherapy treatment from a panel of FDA approved chemotherapies. Methods Ascites and pleural fluid samples were collected under physician order from 45 consecutive patients affected by 3rd-5th relapsed ovarian cancer. Test results from the assay were used to treat patients with the highest cell kill drugs, taking into consideration their health status and using dose reductions, as needed. A retrospective chart review of CT and PET scans was used to determine patients' outcomes for tumor response, time to recurrence, progression-free survival (PFS), and overall survival (OS). Results We observed that recurrent ovarian cancer patients treated with high-cell kill chemotherapy agents guided by the CSCs drug response assay had an improvement in the median PFS corresponding to 5.4 months (3rd relapse), 3.6 months (4th relapse), and 3.9 months (5th relapse) when compared to historical data. Additionally, we observed that ovarian cancer patients identified as non-responders by the CSC drug response assay had 30 times the hazard of death compared to those women that were identified as responders with respective median survivals of 6 months vs. 13 months. We also found that ChemoID treated patients on average had an incremental cost-effectiveness ratio (ICER) between -$18,421 and $7,241 per life-year saved (LYS). Conclusions This study demonstrated improved PFS and OS for recurrent ovarian cancer patients treated with assay-guided chemotherapies while decreasing the cost of treatment. Ovarian cancer progression and recurrence is mostly attributed to the presence of cancer stem cells (CSCs), which are chemo-resistant. Eliminating CSCs is a strategy that could improve patients' outcome. We developed a CSC drug cytotoxicity assay to identify the most effective chemotherapy treatment from a panel of FDA approved chemotherapies. Recurrent ovarian cancer patients treated with high-cell kill chemotherapy agents guided by the CSCs drug response assay had an improvement in the median PFS when compared to historical data.
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Affiliation(s)
- Candace M Howard
- Department of Radiology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Nadim Bou Zgheib
- Gynecologic Oncology, Edwards Comprehensive Cancer Center, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | - Stephen Bush
- Gynecologic Oncology, Charleston Area Medical Center Hospital, Charleston, WV, USA
| | - Timothy DeEulis
- Gynecologic Oncology, Women's Oncologic Palliative Medicine, St. Mary's Hospital, Huntington, WV, USA
| | - Antonio Cortese
- Department of Medicine and Surgery, University of Salerno, Italy
| | - Antonio Mollo
- Obstetric and Gynecologic Unit, Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Seth T Lirette
- Department of Data Science, University of Mississippi Medical Center, Jackson, MS, USA
| | - Krista Denning
- Department of Anatomy and Pathology, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | - Jagan Valluri
- Department of Biological Sciences, Marshall University, Huntington, WV, USA
| | - Pier Paolo Claudio
- Department of BioMolecular Sciences, National Center for Natural Products Research, and Department of Radiation Oncology, University of Mississippi Medical Center Cancer Institute, Jackson, MS, USA.
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Liu J, Wu Z, Sun R, Nie S, Meng H, Zhong Y, Nie X, Cheng W. Using mRNAsi to identify prognostic-related genes in endometrial carcinoma based on WGCNA. Life Sci 2020; 258:118231. [PMID: 32791150 DOI: 10.1016/j.lfs.2020.118231] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/19/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023]
Abstract
AIMS Cancer Stem Cells (CSCs) refers to heterogeneous tumor cells retaining the abilities of self-renewal and differentiation. This study used mRNAsi, which is an index to describe the similarity between tumor cells and CSCs, to define genes involved in endometrial carcinoma. MATERIALS AND METHODS The mRNA expression profiles of 552 tumor samples and 23 non-tumor samples were calculated for differentially expressed genes. WGCNA was utilized to construct gene co-expression networks and classify screened genes into different modules. Univariate and multivariate Cox regression models were performed to identify and construct the prognostic model. Time-dependent receiver operating characteristic (ROC), Kaplan-Meier curve, multivariate Cox regression analysis, and nomogram were used to assess the prognostic capacity of the six-gene signature. The screened genes were further validated by GEO (GSE17025) and qRT-PCR in EC tissues. KEY FINDINGS 2573 upregulated and 1890 downregulated genes were identified. A total of 35 genes in the turquoise module were identified as key genes. With multivariate analysis, six genes (DEPDC1, FAM83D, NCAPH, SPC25, TPX2, and TTK) up-regulated in endometrial carcinoma were identified, and their higher expression was associated with a higher stage/age/grade. Moreover, ROC and Kaplan-Meier plots indicated these genes had a high prognostic value for EC. A nomogram was constructed for clinical use. In addition, we explored the pathogenesis involving six genes. The results showed that these genes may become pathogenic as their copy numbers changes and methylation level reduces. Finally, GSEA revealed these genes had a close association with cell cycle, etc. SIGNIFICANCE: These findings may provide new insights into the treatment of diseases.
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Alshareeda AT, Al-Sowayan BS, Alkharji RR, Aldosari SM, Al Subayyil AM, Alghuwainem A. Cancer of Unknown Primary Site: Real Entity or Misdiagnosed Disease? J Cancer 2020; 11:3919-3931. [PMID: 32328196 PMCID: PMC7171483 DOI: 10.7150/jca.42880] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/31/2020] [Indexed: 01/03/2023] Open
Abstract
Metastasis is a late event in the progression of any tumour. However, invasive cancers are occasionally detected in the form of metastatic lesions without a clearly detectable primary tumour. Cancer of unknown primary site (CUP) is defined as a confirmed metastatic tumour, with unknown primary tumour site, despite the standardized diagnostic approach that includes clinical history, routine laboratory tests, and complete physical examination. Due to the lack of basic research on its primary causes, CUP is appropriately termed an 'orphan' cancer. Nevertheless, CUP accounts for 2-5% of diagnosed malignancies. To date, it is unclear whether CUP is an entity with primary dormancy as its hallmark or an entity with genetic abnormalities that cause it to manifest as a primary metastatic disease. In this review, we discuss different aspects of CUP, including its current diagnostic methods, angiogenesis effectors, relationship with cancer stem cells and current treatments.
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Affiliation(s)
- Alaa T Alshareeda
- Stem Cells and Regenerative Medicine Unit, Cell Therapy & Cancer Research Department, King Abdullah International Medical Research Center, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Batla S Al-Sowayan
- Stem Cells and Regenerative Medicine Unit, Cell Therapy & Cancer Research Department, King Abdullah International Medical Research Center, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Reem R Alkharji
- Research Department, Health Sciences Research Centre, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Sahar M Aldosari
- Cytogenetic and Molecular Genetics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Abdullah M Al Subayyil
- Stem Cells and Regenerative Medicine Unit, Cell Therapy & Cancer Research Department, King Abdullah International Medical Research Center, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Ayidah Alghuwainem
- Stem Cells and Regenerative Medicine Unit, Cell Therapy & Cancer Research Department, King Abdullah International Medical Research Center, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
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Abstract
The extracellular matrix is part of the microenvironment and its functions are associated with the physical and chemical properties of the tissue. Among the extracellular components, the glycosaminoglycan hyaluronan is a key component, defining both the physical and biochemical characteristics of the healthy matrices. The hyaluronan metabolism is strictly regulated in physiological conditions, but in the tumoral tissues, its expression, size and binding proteins interaction are dysregulated. Hyaluronan from the tumor microenvironment promotes tumor cell proliferation, invasion, immune evasion, stemness alterations as well as drug resistance. This chapter describes data regarding novel concepts of hyaluronan functions in the tumor. Additionally, we discuss potential clinical applications of targeting HA metabolism in cancer therapy.
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Tsugawa H, Kato C, Mori H, Matsuzaki J, Kameyama K, Saya H, Hatakeyama M, Suematsu M, Suzuki H. Cancer Stem-Cell Marker CD44v9-Positive Cells Arise From Helicobacter pylori-Infected CAPZA1-Overexpressing Cells. Cell Mol Gastroenterol Hepatol 2019; 8:319-334. [PMID: 31146068 PMCID: PMC6713896 DOI: 10.1016/j.jcmgh.2019.05.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS CD44 variant 9 (CD44v9)-positive cancer stem-like cells strongly contribute to the development and recurrence of gastric cancer. However, the origin of CD44v9-positive cells is uncertain. METHODS CD44v9, β-catenin, and epithelial splicing regulatory protein 1 signals were assessed by real-time reverse-transcription polymerase chain reaction, immunoblot analysis, or immunofluorescence microscopy. Capping actin protein of muscle Z-line α subunit 1 (CAPZA1) expression was assessed by immunoblot analysis or immunohistochemical analysis of Mongolian gerbils' gastric mucosa or human biopsy specimens. Levels of oxidative stress were assessed by measuring malondialdehyde and protein carbonylation. Histone H3 acetylation levels in the CAPZA1 proximal promoter region were measured by using chromatin immunoprecipitation analysis with an antibody against the acetylated histone H3 in human gastric carcinoma cell line (AGS) cells. RESULTS CD44v9 is expressed in CAPZA1-overexpressing cells in human gastric cancer tissues. CAPZA1 overexpression enhanced expression of β-catenin, which is a transcription factor for CD44, and epithelial splicing regulatory protein 1, which increases alternative splicing of CD44 to generate CD44v9. CAPZA1-overexpressing cells after cytotoxin-associated gene A accumulation showed CD44v9 expression by inducing nuclear accumulation of β-catenin, concomitant with the enhancement of expression of Sal-like protein 4 and Krüppel-like factor 5, which encode reprogramming factors. Oxidative stress increased the CAPZA1 expression in AGS cells through the enhancement of histone H3 acetylation of CAPZA1 promoter. CAPZA1 expression was increased depending on oxidative stress in H pylori-infected gastric mucosa. CONCLUSIONS CD44v9 expression is evoked from CAPZA1-overexpressing cells after accumulation of cytotoxin-associated gene A. Our findings provide important insights into the mechanisms underlying the development of CD44v9-positive cells.
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Affiliation(s)
- Hitoshi Tsugawa
- Department of Biochemistry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Chihiro Kato
- Medical Education Center, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hideki Mori
- Division of Gastroenterology and Hepatology, National Hospital Organization Tokyo Medical Center, Meguro-ku, Tokyo, Japan
| | - Juntaro Matsuzaki
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Kaori Kameyama
- Department of Pathology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Masanori Hatakeyama
- Division of Microbiology, Graduate School of Medicine, University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Makoto Suematsu
- Department of Biochemistry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hidekazu Suzuki
- Department of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan,Correspondence Address correspondence to: Hidekazu Suzuki, MD, PhD, FACG, AGAF, RFF, Department of Gastroenterology and Hepatology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan. fax: +81(463)93-7134.
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32
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Rachmadi L, Siregar NC, Kanoko M, Andrijono A, Bardosono S, Suryandari DA, Sekarutami SM, Hernowo BS. Role of Cancer Stem Cell, Apoptotic Factor, DNA Repair, and Telomerase Toward Radiation Therapy Response in Stage IIIB Cervical Cancer. Oman Med J 2019; 34:224-230. [PMID: 31110630 PMCID: PMC6505348 DOI: 10.5001/omj.2019.43] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Objectives Cancer stem cells are involved in radioresistant cancers. Transcription factors Sry-related HMG box (SOX2) and octamer binding transcription factor 4 (OCT4) can confer pluripotent cell characteristics and self-renewal ability and are involved in carcinogenesis, metastasis, tumor recurrence, and resistance to therapy. Apoptosis, DNA repair, and telomerase factors also contribute to radioresistance. We sought to identify the role of SOX2 and OCT4 as cancer stem cell markers and their effects on apoptosis (via caspase 3), DNA repair (Chk1) and telomerase (hTERT) in conferring resistance to radiotherapy. Methods We conducted a case-control study of 40 patients with stage IIIB cervical squamous cell carcinoma who completed radiation therapy at Cipto Mangunkusumo Hospital, Jakarta, Indonesia. The patients were classified according to their treatment response as having exhibited a complete or incomplete response. Clinical follow-up and Pap smears were performed between six and 12 months after therapy for those with a good initial response to determine the final response to therapy. Immunohistochemistry was used to analyze SOX2, OCT4, caspase-3, Chk1, and hTERT expression in paraffin sections of the initial biopsy. Results Strong expression of SOX2 (p = 0.011, p = 0.001) and OCT4 (p < 0.001, p < 0.001) was significantly associated with both an incomplete initial and final therapy response, respectively. Multivariate analysis showed that SOX2 and OCT4 expression levels were the strongest markers of an incomplete response to radiotherapy (odds ratio (OR) = 5.12, p = 0.034, and OR = 17.03, p = 0.004, respectively). Conclusions Strong expression of SOX2 and OCT4 may be a good indicator of incomplete radiotherapy outcome in patients with stage IIIB cervical cancer.
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Affiliation(s)
- Lisnawati Rachmadi
- Department of Anatomical Pathology, Faculty of Medicine Universitas Indonesia-Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Nurjati Chairani Siregar
- Department of Anatomical Pathology, Faculty of Medicine Universitas Indonesia-Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Mpu Kanoko
- Department of Anatomical Pathology, Faculty of Medicine Universitas Indonesia-Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Andrijono Andrijono
- Department of Obstetrics and Gynecology, Faculty of Medicine Universitas Indonesia-Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Saptawati Bardosono
- Department of Nutrition, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia
| | - Dwi Anita Suryandari
- Department of Biology, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia
| | - Sri Mutya Sekarutami
- Department of Radiotherapy, Faculty of Medicine Universitas Indonesia-Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Bethy Suryawathy Hernowo
- Department of Anatomical Pathology, Faculty of Medicine Universitas Padjajaran-Hasan Sadikin Hospital, Jakarta, Indonesia
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Crawford HC, Pasca di Magliano M, Banerjee S. Signaling Networks That Control Cellular Plasticity in Pancreatic Tumorigenesis, Progression, and Metastasis. Gastroenterology 2019; 156:2073-2084. [PMID: 30716326 PMCID: PMC6545585 DOI: 10.1053/j.gastro.2018.12.042] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/29/2018] [Accepted: 12/10/2018] [Indexed: 02/06/2023]
Abstract
Pancreatic ductal adenocarcinoma is one of the deadliest cancers, and its incidence on the rise. The major challenges in overcoming the poor prognosis with this disease include late detection and the aggressive biology of the disease. Intratumoral heterogeneity; presence of a robust, reactive, and desmoplastic stroma; and the crosstalk between the different tumor components require complete understanding of the pancreatic tumor biology to better understand the therapeutic challenges posed by this disease. In this review, we discuss the processes involved during tumorigenesis encompassing the inherent plasticity of the transformed cells, development of tumor stroma crosstalk, and enrichment of cancer stem cell population during tumorigenesis.
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Affiliation(s)
- Howard C Crawford
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan; Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan
| | - Marina Pasca di Magliano
- Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan; Department of Surgery, University of Michigan, Ann Arbor, Michigan
| | - Sulagna Banerjee
- Department of Surgery, University of Miami School of Medicine, Miami, Florida; Sylvester Cancer Center, University of Miami, Miami, Florida.
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Shokraii F, Moharrami M, Motamed N, Shahhoseini M, Totonchi M, Ezzatizadeh V, Firouzi J, Khosravani P, Ebrahimi M. Histone Modification Marks Strongly Regulate CDH1 Promoter in Prostospheres as A Model of Prostate Cancer Stem Like Cells. Cell J 2019; 21:124-134. [PMID: 30825285 PMCID: PMC6397603 DOI: 10.22074/cellj.2019.5702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 10/02/2018] [Indexed: 02/05/2023]
Abstract
Objective Cadherin-1 (CDH1) plays an important role in the metastasis, while expression of this protein is under control of
epigenetic changes on its gene promoter. Therefore we evaluated both DNA methylation (DNAmet) and histone modification
marks of CDH1 in prostate cancer stem like cells (PCSLCs).
Materials and Methods In this experimental study, we isolated PCSLCs using cell surface marker and prostaspheroid
formation, respectively. The cells isolated from both methods were characterized and then the levels of H3K4me2, H3K27me3,
H3K9me2/3 and H3K9ac as well as DNAmet were assessed in CDH1 promoter of the isolated cells.
Results The CD44+ CD49hi cells were not validated as PCSLCs. However, prostaspheres overexpressed stemness
related genes and had higher ability of invasion potential, associated with reduction in CDH1 expression. Epigenetic
status analysis showed that CDH1 promoter was hypo-methylated. Histone modifications of H3K9ac and H3K4me3
were significantly reduced, in parallel with an increased level of H3K27me3.
Conclusion Our results suggest that slight decrease of DNAmet of the CpG island in CDH1 promoter does not significantly
contribute to the change of CDH1 expression. Therefore, histone modifications are responsible in repressing CDH1 in PCSLCs.
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Affiliation(s)
- Fatemeh Shokraii
- Department of Developmental Biology, University of Science and Culture, ACECR, Tehran, Iran.,Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Maryam Moharrami
- School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Nasrin Motamed
- School of Biology, College of Science, University of Tehran, Tehran, Iran. Electronic Adress:
| | - Maryam Shahhoseini
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mehdi Totonchi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Vahid Ezzatizadeh
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.,Department of Medical Genetics, Royesh Medical Laboratory Centre, Tehran, Iran
| | - Javad Firouzi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Pardis Khosravani
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Marzieh Ebrahimi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran. Electronic Address:
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35
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Abad E, García-Mayea Y, Mir C, Sebastian D, Zorzano A, Potesil D, Zdrahal Z, Lyakhovich A, Lleonart ME. Common Metabolic Pathways Implicated in Resistance to Chemotherapy Point to a Key Mitochondrial Role in Breast Cancer. Mol Cell Proteomics 2019; 18:231-244. [PMID: 30373788 PMCID: PMC6356073 DOI: 10.1074/mcp.ra118.001102] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/13/2018] [Indexed: 12/23/2022] Open
Abstract
Cancer cells are known to reprogram their metabolism to adapt to adverse conditions dictated by tumor growth and microenvironment. A subtype of cancer cells with stem-like properties, known as cancer stem cells (CSC), is thought to be responsible for tumor recurrence. In this study, we demonstrated that CSC and chemoresistant cells derived from triple negative breast cancer cells display an enrichment of up- and downregulated proteins from metabolic pathways that suggests their dependence on mitochondria for survival. Here, we selected antibiotics, in particular - linezolid, inhibiting translation of mitoribosomes and inducing mitochondrial dysfunction. We provided the first in vivo evidence demonstrating that linezolid suppressed tumor growth rate, accompanied by increased autophagy. In addition, our results revealed that bactericidal antibiotics used in combination with autophagy blocker decrease tumor growth. This study puts mitochondria in a spotlight for cancer therapy and places antibiotics as effective agents for eliminating CSC and resistant cells.
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Affiliation(s)
- Etna Abad
- Biomedical Research in Cancer Stem Cell Group, Pathology Department, Vall d'Hebron Hospital, 08035, Passeig Vall d'Hebron 119-129, 08035 Barcelona. Barcelona, Spain
| | - Yoelsis García-Mayea
- Biomedical Research in Cancer Stem Cell Group, Pathology Department, Vall d'Hebron Hospital, 08035, Passeig Vall d'Hebron 119-129, 08035 Barcelona. Barcelona, Spain
| | - Cristina Mir
- Biomedical Research in Cancer Stem Cell Group, Pathology Department, Vall d'Hebron Hospital, 08035, Passeig Vall d'Hebron 119-129, 08035 Barcelona. Barcelona, Spain
| | - David Sebastian
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain 08028;; Departament de Bioquímica i Biomedicina Molecular, Universitat de Barcelona, c/ Baldiri Reixac, 10-12, Barcelona 08028, Spain;; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid 28029, Spain
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain 08028;; Departament de Bioquímica i Biomedicina Molecular, Universitat de Barcelona, c/ Baldiri Reixac, 10-12, Barcelona 08028, Spain;; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid 28029, Spain
| | - David Potesil
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Zbynek Zdrahal
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic;; National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Alex Lyakhovich
- Biomedical Research in Cancer Stem Cell Group, Pathology Department, Vall d'Hebron Hospital, 08035, Passeig Vall d'Hebron 119-129, 08035 Barcelona. Barcelona, Spain;.
| | - Matilde E Lleonart
- Biomedical Research in Cancer Stem Cell Group, Pathology Department, Vall d'Hebron Hospital, 08035, Passeig Vall d'Hebron 119-129, 08035 Barcelona. Barcelona, Spain;; Spanish Biomedical Research Network Centre in Oncology, CIBERONC, Barcelona, Spain.
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Liu H, Huang H, Voss C, Kaneko T, Qin WT, Sidhu S, Li SSC. Surface Loops in a Single SH2 Domain Are Capable of Encoding the Spectrum of Specificity of the SH2 Family. Mol Cell Proteomics 2019; 18:372-382. [PMID: 30482845 PMCID: PMC6356082 DOI: 10.1074/mcp.ra118.001123] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/05/2018] [Indexed: 12/15/2022] Open
Abstract
Src homology 2 (SH2) domains play an essential role in cellular signal transduction by binding to proteins phosphorylated on Tyr residue. Although Tyr phosphorylation (pY) is a prerequisite for binding for essentially all SH2 domains characterized to date, different SH2 domains prefer specific sequence motifs C-terminal to the pY residue. Because all SH2 domains adopt the same structural fold, it is not well understood how different SH2 domains have acquired the ability to recognize distinct sequence motifs. We have shown previously that the EF and BG loops that connect the secondary structure elements on an SH2 domain dictate its specificity. In this study, we investigated if these surface loops could be engineered to encode diverse specificities. By characterizing a group of SH2 variants selected by different pY peptides from phage-displayed libraries, we show that the EF and BG loops of the Fyn SH2 domain can encode a wide spectrum of specificities, including all three major specificity classes (p + 2, p + 3 and p + 4) of the SH2 domain family. Furthermore, we found that the specificity of a given variant correlates with the sequence feature of the bait peptide used for its isolation, suggesting that an SH2 domain may acquire specificity by co-evolving with its ligand. Intriguingly, we found that the SH2 variants can employ a variety of different mechanisms to confer the same specificity, suggesting the EF and BG loops are highly flexible and adaptable. Our work provides a plausible mechanism for the SH2 domain to acquire the wide spectrum of specificity observed in nature through loop variation with minimal disturbance to the SH2 fold. It is likely that similar mechanisms may have been employed by other modular interaction domains to generate diversity in specificity.
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Affiliation(s)
- Huadong Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China;; Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1
| | - Haiming Huang
- Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto ON M5S 3E1, Canada
| | - Courtney Voss
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1
| | - Tomonori Kaneko
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1
| | - Wen Tao Qin
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1
| | - Sachdev Sidhu
- Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto ON M5S 3E1, Canada.
| | - Shawn S-C Li
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1;.
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Abstract
Ovarian cancer is most deadly gynecologic malignancies worldwide. Chemotherapy is the mainstay treatment for ovarian cancer. Despite the initial response is promising, frequent recurrence in patients with advanced diseases remains a therapeutic challenge. Thus, understanding the biology of chemoresistance is of great importance to overcome this challenge and will conceivably benefit the survival of ovarian cancer patients. Although mechanisms underlying the development of chemoresistance are still ambiguous, accumulating evidence has supported an integral role of cancer stem cells (CSCs) in recurrence following chemotherapy. Recently, tumor metabolism has gained interest as a reason of chemoresistance in tumors and chemotherapeutic drugs in combination with metabolism targeting approaches has been found promising in overcoming therapeutic resistance. In this review, we will summarize recent studies on CSCs and metabolism in ovarian cancer and discuss possible role of CSCs metabolism in chemoresistance.
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Affiliation(s)
- Shan Shan Li
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Jing Ma
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Alice S T Wong
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China.
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Wang H, Liu B, Wang J, Li J, Gong Y, Li S, Wang C, Cui B, Xue X, Yang M, Fan W, Kang Z, Kamran M, Xu J, Tian P, Luo Y, Hou Z, Dong L, Ren Y, Li M, Wen Q, Cheng W, Xu L, Wang L, Liu Q. Reduction of NANOG Mediates the Inhibitory Effect of Aspirin on Tumor Growth and Stemness in Colorectal Cancer. Cell Physiol Biochem 2017; 44:1051-1063. [PMID: 29179207 DOI: 10.1159/000485405] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 09/22/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Cancer stem cells (CSCs) are considered to be responsible for tumor relapse and metastasis, which serve as a potential therapeutic target for cancer. Aspirin has been shown to reduce cancer risk and mortality, particularly in colorectal cancer. However, the CSCs-suppressing effect of aspirin and its relevant mechanisms in colorectal cancer remain unclear. METHODS CCK8 assay was employed to detect the cell viability. Sphere formation assay, colony formation assay, and ALDH1 assay were performed to identify the effects of aspirin on CSC properties. Western blotting was performed to detect the expression of the stemness factors. Xenograft model was employed to identify the anti-cancer effects of aspirin in vivo. Unpaired Student t test, ANOVA test and Kruskal-Wallis test were used for the statistical comparisons. RESULTS Aspirin attenuated colonosphere formation and decreased the ALDH1 positive cell population of colorectal cancer cells. Aspirin inhibited xenograft tumor growth and reduced tumor cells stemness in nude mice. Consistently, aspirin decreased the protein expression of stemness-related transcription factors, including c-Myc, OCT4 and NANOG. Suppression of NANOG blocked the effect of aspirin on sphere formation. Conversely, ectopic expression of NANOG rescued the aspirin-repressed sphere formation, suggesting that NANOG is a key downstream target. Moreover, we found that aspirin repressed NANOG expression in protein level by decreasing its stability. CONCLUSION We have provided new evidence that aspirin attenuates CSC properties through down-regulation of NANOG, suggesting aspirin as a promising therapeutic agent for colorectal cancer treatment.
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Affiliation(s)
- Hefei Wang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University, Guangzhou, China.,Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Bing Liu
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Jing Wang
- Department of Oncology, The First Affiliated Hospital of Gannan Medical College, Ganzhou, China.,Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Jinglin Li
- Department of Anesthesia, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Ying Gong
- Department of Oncology, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Sisi Li
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Chunli Wang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Bai Cui
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Xiaoyuan Xue
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Mengying Yang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Wenjun Fan
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Zhijie Kang
- Department of Hematology, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Muhammad Kamran
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Jie Xu
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Pengfei Tian
- Department of Oncology, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Yuanyuan Luo
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Zhijie Hou
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Lin Dong
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Yanling Ren
- Department of Oncology, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Man Li
- Department of Oncology, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Qingping Wen
- Department of Anesthesia, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Wei Cheng
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Lingzhi Xu
- Department of Oncology, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Ling Wang
- Department of Oncology, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Quentin Liu
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University, Guangzhou, China
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Duguang L, Jin H, Xiaowei Q, Peng X, Xiaodong W, Zhennan L, Jianjun Q, Jie Y. The involvement of lncRNAs in the development and progression of pancreatic cancer. Cancer Biol Ther 2017; 18:927-936. [PMID: 29053398 DOI: 10.1080/15384047.2017.1385682] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Pancreatic cancer is one of the most malignant tumors that are difficult to diagnose at its early stage and there is no effective therapy. Recent studies uncovered that many non-protein-coding RNAs including the class of long noncoding RNAs (lncRNAs) are differentially expressed in various types of tumors and they are potent regulators of tumor progression and metastasis. LncRNA can mediate tumor initiation, proliferation, migration and metastasis through modulating epigenetic modification, alternative splicing, transcription, and protein translation. In this review, we discuss the molecular mechanism of lncRNAs in the involvement of tumor growth, survival, epithelial-mesenchymal transition, tumor microenvironment, cancer stem cells and chemoresistance in pancreatic ductal adenocarcinoma (PDAC).
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Affiliation(s)
- Li Duguang
- a The Second Clinical College of Dalian Medical University , 9 Western District, Lvshun South Road, Dalian , Liaoning , P. R. China
| | - He Jin
- b Medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Qian Xiaowei
- b Medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Xu Peng
- c Department of Hepatobiliary and Pancreatic Surgery , Northern Jiangsu People's Hospital, Clinical medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Wang Xiaodong
- c Department of Hepatobiliary and Pancreatic Surgery , Northern Jiangsu People's Hospital, Clinical medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Li Zhennan
- c Department of Hepatobiliary and Pancreatic Surgery , Northern Jiangsu People's Hospital, Clinical medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Qian Jianjun
- c Department of Hepatobiliary and Pancreatic Surgery , Northern Jiangsu People's Hospital, Clinical medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
| | - Yao Jie
- c Department of Hepatobiliary and Pancreatic Surgery , Northern Jiangsu People's Hospital, Clinical medical college of Yangzhou University , Yangzhou , Jiangsu , P. R. China
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Abstract
Purpose of the review Radiation became a pillar of oncologic treatment in the last century and provided a powerful and effective locoregional treatment of solid malignancies. After achieving some of the first cures in lymphomas and skin cancers, it assumed a key role in curative treatment of epithelioid malignancies. Despite success across a variety of histologic types, glioblastoma (GBM), the most common primary brain tumor afflicting adults, remains ultimately resistant to current radiation strategies. While GBMs demonstrate an initial response, recurrence is essentially universal and fatal, and typically reoccur in the areas that received the most intense radiation. Recent Findings Glioma stem cells (GSCs), a subpopulation of tumor cells with expression profiles similar to neural stem cells and marked self-renewal capacities, have been shown to drive tumor recurrence and preclude curative radiotherapy. Recent research has shown that these cells have enhanced DNA repair capacity, elevated resistance to cytotoxic ion fluxes and escape multi-modality therapies. Summary We will analyze the current understanding of GSCs and radiation by highlighting key discoveries probing their ability to withstand radiotherapy. We then speculate on novel mechanisms by which GSC can be made sensitive to or specifically targeted by radiation therapy.
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Affiliation(s)
- Seamus P Caragher
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Sean Sachdev
- Department of Radiation Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Atique Ahmed
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Riha R, Gupta-Saraf P, Bhanja P, Badkul S, Saha S. Stressed Out - Therapeutic Implications of ER Stress Related Cancer Research. ACTA ACUST UNITED AC 2017; 2:156-167. [PMID: 29445586 DOI: 10.7150/oncm.22477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The unfolded protein response (UPR) is an established and well-studied cellular response to the stress and serves to relieve the stress and reinstate cellular homeostasis. It occurs in the endoplasmic reticulum (ER), responsible of properly folding and processing of secretory and transmembrane proteins. It is extremely sensitive to alteration in homeostasis caused by various internal or external stressors which leads to accumulation of misfolded or unfolded proteins in the ER lumen. The UPR works by restoring protein homeostasis in the ER, either through the boosting of protein-folding and degradation capability or by assuaging the demands for such effects, and can cause the activation of cell death if unable to do so. Cancer cells have adapted to gain advantage from the UPR and keeping the cell away from apoptosis and promoting survival, including survival of the cancer stem cells and evading the immune system. Several components of the UPR are overexpressed in a malignant cell and are responsible for resistance from various chemotherapy options and radiotherapy, which are also responsible for causing ER stress and activating the UPR. In this review, we discuss the various ways in which UPR can aid different cancers to survive and evade therapy and highlight recent research, which exploits the UPR to confer sensitivity to these cancer cells against various drugs and radiation.
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Affiliation(s)
- Randal Riha
- Department of Radiation Oncology, University of Kansas Medical Center
| | - Pooja Gupta-Saraf
- Department of Radiation Oncology, University of Kansas Medical Center
| | - Payel Bhanja
- Department of Radiation Oncology, University of Kansas Medical Center
| | - Samyak Badkul
- Department of Radiation Oncology, University of Kansas Medical Center
| | - Subhrajit Saha
- Department of Radiation Oncology, University of Kansas Medical Center.,Department of Cancer Biology, University of Kansas Medical Center
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Lai KK, Kweon SM, Chi F, Hwang E, Kabe Y, Higashiyama R, Qin L, Yan R, Wu RP, Fujii N, French S, Xu J, Wang JY, Murali R, Mishra L, Lee JS, Ntambi JM, Tsukamoto H, Tsukamoto H. Stearoyl-CoA Desaturase Promotes Liver Fibrosis and Tumor Development in Mice via a Wnt Positive-Signaling Loop by Stabilization of Low-Density Lipoprotein-Receptor-Related Proteins 5 and 6. Gastroenterology 2017; 152:1477-1491. [PMID: 28143772 PMCID: PMC5406249 DOI: 10.1053/j.gastro.2017.01.021] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 01/09/2017] [Accepted: 01/17/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Stearoyl-CoA desaturase (SCD) synthesizes monounsaturated fatty acids (MUFAs) and has been associated with the development of metabolic syndrome, tumorigenesis, and stem cell characteristics. We investigated whether and how SCD promotes liver fibrosis and tumor development in mice. METHODS Rodent primary hepatic stellate cells (HSCs), mouse liver tumor-initiating stem cell-like cells (TICs), and human hepatocellular carcinoma (HCC) cell lines were exposed to Wnt signaling inhibitors and changes in gene expression patterns were analyzed. We assessed the functions of SCD by pharmacologic and conditional genetic manipulation in mice with hepatotoxic or cholestatic induction of liver fibrosis, orthotopic transplants of TICs, or liver tumors induced by administration of diethyl nitrosamine. We performed bioinformatic analyses of SCD expression in HCC vs nontumor liver samples collected from patients, and correlated levels with HCC stage and patient mortality. We performed nano-bead pull-down assays, liquid chromatography-mass spectrometry, computational modeling, and ribonucleoprotein immunoprecipitation analyses to identify MUFA-interacting proteins. We examined the effects of SCD inhibition on Wnt signaling, including the expression and stability of low-density lipoprotein-receptor-related proteins 5 and 6 (LRP5 and LRP6), by immunoblot and quantitative polymerase chain reaction analyses. RESULTS SCD was overexpressed in activated HSC and HCC cells from patients; levels of SCD messenger RNA (mRNA) correlated with HCC stage and patient survival time. In rodent HSCs and TICs, the Wnt effector β-catenin increased sterol regulatory element binding protein 1-dependent transcription of Scd, and β-catenin in return was stabilized by MUFAs generated by SCD. This loop required MUFA inhibition of binding of Ras-related nuclear protein 1 (Ran1) to transportin 1 and reduced nuclear import of elav-like protein 1 (HuR), increasing cytosolic levels of HuR and HuR-mediated stabilization of mRNAs encoding LRP5 and LRP6. Genetic disruption of Scd and pharmacologic inhibitors of SCD reduced HSC activation and TIC self-renewal and attenuated liver fibrosis and tumorigenesis in mice. Conditional disruption of Scd2 in activated HSCs prevented growth of tumors from TICs and reduced the formation of diethyl nitrosamine-induced liver tumors in mice. CONCLUSIONS In rodent HSCs and TICs, we found SCD expression to be regulated by Wnt-β-catenin signaling, and MUFAs produced by SCD provided a forward loop to amplify Wnt signaling via stabilization of Lrp5 and Lrp6 mRNAs, contributing to liver fibrosis and tumor growth. SCD expressed by HSCs promoted liver tumor development in mice. Components of the identified loop linking HSCs and TICs might be therapeutic targets for liver fibrosis and tumors.
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Affiliation(s)
- Keane K.Y. Lai
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Soo-Mi Kweon
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Feng Chi
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Edward Hwang
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Yasuaki Kabe
- Department of Biochemistry, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Reiichi Higashiyama
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Lan Qin
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Rui Yan
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Raymond P. Wu
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Naoaki Fujii
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Samuel French
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA,Harbor-UCLA Medical Center, Torrance, CA 90509, USA
| | - Jun Xu
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA
| | - Jian-Ying Wang
- Departments of Surgery and Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Ramanchadran Murali
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, University of Southern California, Los Angeles, CA 90033, USA,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Lopa Mishra
- Department of Surgery and Cancer Center, George Washington University, Washington, DC 20037, USA
| | - Ju-Seog Lee
- Department of Systems Biology, the University of Texas MD Anderson Cancer Center, Houston, TX 77230, USA
| | - James M. Ntambi
- Departments of Biochemistry and Nutritional Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Hidekazu Tsukamoto
- Southern California Research Center for ALPD and Cirrhosis, Department of Pathology, University of Southern California, Los Angeles, California; Department of Veterans Affairs, Greater Los Angeles Healthcare System, Los Angeles, California.
| | - Hidekazu Tsukamoto
- Southern California Research Center for ALPD and Cirrhosis, Department of Pathology, University of Southern California, Los Angeles, California; Department of Veterans Affairs, Greater Los Angeles Healthcare System, Los Angeles, California.
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Kim MJ, Koo JE, Han GY, Kim B, Lee YS, Ahn C, Kim CW. Dual-Blocking of PI3K and mTOR Improves Chemotherapeutic Effects on SW620 Human Colorectal Cancer Stem Cells by Inducing Differentiation. J Korean Med Sci 2016; 31:360-70. [PMID: 26955235 PMCID: PMC4779859 DOI: 10.3346/jkms.2016.31.3.360] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/19/2015] [Indexed: 12/28/2022] Open
Abstract
Cancer stem cells (CSCs) have tumor initiation, self-renewal, metastasis and chemo-resistance properties in various tumors including colorectal cancer. Targeting of CSCs may be essential to prevent relapse of tumors after chemotherapy. Phosphatidylinositol-3-kinase (PI3K) and mammalian target of rapamycin (mTOR) signals are central regulators of cell growth, proliferation, differentiation, and apoptosis. These pathways are related to colorectal tumorigenesis. This study focused on PI3K and mTOR pathways by inhibition which initiate differentiation of SW620 derived CSCs and investigated its effect on tumor progression. By using rapamycin, LY294002, and NVP-BEZ235, respectively, PI3K and mTOR signals were blocked independently or dually in colorectal CSCs. Colorectal CSCs gained their differentiation property and lost their stemness properties most significantly in dual-blocked CSCs. After treated with anti-cancer drug (paclitaxel) on the differentiated CSCs cell viability, self-renewal ability and differentiation status were analyzed. As a result dual-blocking group has most enhanced sensitivity for anti-cancer drug. Xenograft tumorigenesis assay by using immunodeficiency mice also shows that dual-inhibited group more effectively increased drug sensitivity and suppressed tumor growth compared to single-inhibited groups. Therefore it could have potent anti-cancer effects that dual-blocking of PI3K and mTOR induces differentiation and improves chemotherapeutic effects on SW620 human colorectal CSCs.
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Affiliation(s)
- Min-Jung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
- Ministry of Food and Drug Safety, Cheongju, Korea
| | - Jeong-Eun Koo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Gi-Yeon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Buyun Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Yoo-Sun Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Chiyoung Ahn
- Ministry of Food and Drug Safety, Cheongju, Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Hajimoradi M, Mohammad Hassan Z, Ebrahimi M, Soleimani M, Bakhshi M, Firouzi J, Samani FS. STAT3 is Overactivated in Gastric Cancer Stem-Like Cells. Cell J 2016; 17:617-28. [PMID: 26862521 PMCID: PMC4746412 DOI: 10.22074/cellj.2016.3834] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 06/09/2015] [Indexed: 12/19/2022]
Abstract
Objective Gastric cancer (GC) is widely associated with chronic inflammation. The
pro inflammatory microenvironment provides conditions that disrupt stem/progenitor
cell proliferation and differentiation. The signal transducer and activator of transcrip-
tion-3 (STAT3) signaling pathway is involved in inflammation and also contributes to
the maintenance of embryonic stem cell (ESCs) pluripotency. Here, we have investi-
gated the activation status of STAT3 in GC stem-like cells (GCSLCs).
Materials and Methods In this experimental research, CSLCs derived from the human
GC cell line MKN-45 and patient specimens, through spheroid body formation, character-
ized and then assayed for the STAT3 transcription factor expression in mRNA and protein
level further to its activation.
Results Spheroid cells showed higher potential for spheroid formation than the pa-
rental cells. Furthemore, stemness genes NANOG, c-MYC and SOX-2 were over
expressed in spheroids of MKN-45 and in patient samples. In MKN-45 spheroid cells,
epithelial mesenchymal transition (EMT) related markers CDH2, SNAIL2, TWIST and
VIMENTIN were upregulated (P<0.05), but we observed no change in expression of
the E-cadherin epithelial marker. These cells exhibited more resistance to docetaxel
(DTX) when compared with parental cells (P<0.05) according to the MTS assay. Al-
though immunostaining and Western blotting showed expression of the STAT3 pro-
tein in both spheroids and parents, the mRNA level of STAT3 in spheroids was higher
than the parents. Nuclear translocation of STAT3 was accompanied by more intensive
phospho-STAT3 (p-STAT3) in spheroid structures relative to the parent cells accord-
ing to flow cytometry analysis (P<0.05).
Conclusion The present findings point to STAT3 over activation in GCSLCs. Com-
plementary experiments are required to extend the role of STAT3 in stemness fea-
tures and invasion properties of GCSCs and to consider the STAT3 pathway for CSC
targeted therapy.
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Affiliation(s)
- Monireh Hajimoradi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zuhair Mohammad Hassan
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Marzieh Ebrahimi
- Department of Stem Cells and Developmental Biology, Cell Sciences Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mahdieh Bakhshi
- Department of Molecular Medicine, Faculty of Advanced Medical Technologies, Gorgan University of Medical Sciences, Gorgan, Iran
| | - Javad Firouzi
- Department of Stem Cells and Developmental Biology, Cell Sciences Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Fazel Sahraneshin Samani
- Department of Stem Cells and Developmental Biology, Cell Sciences Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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Abstract
The Wnt signaling pathway is critically involved in both the development and homeostasis of tissues via regulation of their endogenous stem cells. Aberrant Wnt signaling has been described as a key player in the initiation of and/or maintenance and development of many cancers, via affecting the behavior of Cancer Stem Cells (CSCs). CSCs are considered by most to be responsible for establishment of the tumor and also for disease relapse, as they possess inherent drug-resistance properties. The development of new therapeutic compounds targeting the Wnt signaling pathway promises new hope to eliminate CSCs and achieve cancer eradication. However, a major challenge resides in developing a strategy efficient enough to target the dysregulated Wnt pathway in CSCs, while being safe enough to not damage the normal somatic stem cell population required for tissue homeostasis and repair. Here we review recent therapeutic approaches to target the Wnt pathway and their clinical applications.
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Affiliation(s)
- Yann Duchartre
- Children's Hospital Los Angeles, Department of Pediatrics and Pathology, Division of Hematology, Oncology and Bone Marrow Transplantation, Keck School of Medicine, University of Southern California, Los Angeles, California, United States
| | - Yong-Mi Kim
- Children's Hospital Los Angeles, Department of Pediatrics and Pathology, Division of Hematology, Oncology and Bone Marrow Transplantation, Keck School of Medicine, University of Southern California, Los Angeles, California, United States.
| | - Michael Kahn
- Department of Biochemistry and Molecular Biology, Keck School of Medicine of University of Southern California, Los Angeles, California, United States; Norris Comprehensive Cancer Research Center, University of Southern California, Los Angeles, California, United States
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Song Y, Pan G, Chen L, Ma S, Zeng T, Man Chan TH, Li L, Lian Q, Chow R, Cai X, Li Y, Li Y, Liu M, Li Y, Zhu Y, Wong N, Yuan YF, Pei D, Guan XY. Loss of ATOH8 Increases Stem Cell Features of Hepatocellular Carcinoma Cells. Gastroenterology 2015; 149:1068-81.e5. [PMID: 26099525 DOI: 10.1053/j.gastro.2015.06.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 06/10/2015] [Accepted: 06/13/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND & AIMS Levels of atonal homolog 8 (ATOH8) are reduced in 48% of hepatitis B virus-associated hepatocellular carcinoma cells (HCCs). ATOH8 downregulation is associated with loss of tumor differentiation, indicating an effect mediated by cancer stem cells. We investigated the effects of loss of ATOH8 in human hepatocellular carcinoma (HCC) cells and cell lines. METHODS HCC and adjacent nontumor tissues were collected, from 2001 through 2012, from 242 patients undergoing hepatectomy at Sun Yat-Sen University Cancer Center in China; 83% of HCCs were associated with hepatitis B virus (HBV) infection. CD133(+) cells were isolated from tumor tissues by flow cytometry. Experiments were performed in HBV-positive and HBV-negative HCC cell lines, the immortalized liver cell line LO2, and 8 other HCC cell lines. ATOH8 was expressed from lentiviral vectors in PLC8024 and Huh7 cells; levels were knocked down with small interfering RNAs in QSG7701 cells. Cells carrying empty vectors were used as controls. Gene regulation by ATOH8 was assessed in mobility shift and luciferase reporter assays. Cells were analyzed in proliferation, foci formation, and colony formation assays. The tumorigenic and chemo-resistant potential of cells were investigated by assessing growth of xenograft tumors in immunocompromised mice. Metastatic features of cells were assessed in Matrigel invasion assays and wound healing analyses. RESULTS Levels of ATOH8 mRNA were reduced by more than 4-fold, compared to nontumor tissues, in 118 of 242 HCC samples (48.8%). Patients with tumor reductions in ATOH8 had significantly shorter times of disease-free survival (mean, 41.4 months) than patients with normal tissue levels (mean, 52.6 months). ATOH8 expression was reduced in HepG2, Huh7, PLC8024 and CRL8064 HCC cells, as well as CD133(+) cells isolated from human HCC samples. Transgenic expression of ATOH8 in HCC cell lines significantly reduced proliferation and foci colony formation, as well as their invasive and migratory abilities. Transgenic expression of ATOH8 reduced the ability of HBV-positive PLC8024 cells to form tumors in mice, compared to control cells. Cells with ATOH8 knockdown formed xenograft tumors more rapidly, in more mice, than control cells. ATOH8 repressed transcription of stem-cell associated genes including OCT4, NANOG, and CD133. Knockdown of ATOH8 in CD133-negative QSG7701 cells caused them to express CD133; acquire self-renewal, differentiation, chemo-resistance properties; form more xenograft tumors in mice; and generate induced pluripotent stem cells (based on staining for alkaline phosphatase and their ability to form embryoid bodies and teratomas). Alternatively, expression of ATOH8 in PLC8024 and Huh7 cells significantly reduced the numbers of cells expressing CD133, and increased the chemo-sensitivity of Huh7 cells to 5-fluorouracil (5-FU) and cisplatin, in vitro and in mice. CONCLUSIONS ATOH8 appears to be a tumor suppressor that induces stem-cell features and chemoresistance in HCC cells. Strategies to restore its levels and activities might be developed to treat patients with liver cancer.
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Affiliation(s)
- Yangyang Song
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Guangjin Pan
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China; Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Leilei Chen
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Anatomy, National University of Singapore, Singapore
| | - Stephanie Ma
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Tingting Zeng
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Tim Hon Man Chan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Lei Li
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Qizhou Lian
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Raymond Chow
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Xiujuan Cai
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China; Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Yan Li
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yan Li
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ming Liu
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yun Li
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yinghui Zhu
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Nathalie Wong
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong, China
| | - Yun-Fei Yuan
- State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Duanqing Pei
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Xin-Yuan Guan
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Liver Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, China.
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Kumar B, Yadav A, Lang JC, Teknos TN, Kumar P. Suberoylanilide hydroxamic acid (SAHA) reverses chemoresistance in head and neck cancer cells by targeting cancer stem cells via the downregulation of nanog. Genes Cancer 2015; 6:169-81. [PMID: 26000099 PMCID: PMC4426953 DOI: 10.18632/genesandcancer.54] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 03/16/2015] [Indexed: 11/26/2022] Open
Abstract
Acquisition of chemoresistance and metastatic phenotype are the major causes of treatment failure and mortality in head and neck squamous cell carcinoma (HNSCC) patients. Histone deacetylases (HDACs) have been shown to be overexpressed in many tumor types and directly linked to poor prognosis. In this study, we demonstrate that HDACs are markedly elevated in HNSCC. HDACs expression was further increase in cisplatin resistant cell lines (CisR). In addition, cisplatin-resistant cells showed enhanced stem cell properties and tumor metastasis. Depletion of HDAC1 and 2 in CisR cell lines significantly reversed cisplatin resistance and tumorsphere formation. Next, we tested the efficacy of Suberoylanilide hydroxamic acid (SAHA), an HDAC inhibitor, by using both in vitro and in vivo models. SAHA significantly inhibited cell proliferation and synergistically enhanced the anti-proliferative effects of cisplatin. In addition, SAHA significantly decreased tumorsphere formation by markedly reducing nanog expression. In a SCID mouse xenograft model, SAHA significantly enhanced the anti-tumor effects of cisplatin treatment with no added systemic toxicity. Furthermore, SAHA and cisplatin combination treatment significantly decreased tumor metastasis and nanog expression, in vivo. Taken together, our results suggest that targeting HDACs with SAHA could be an effective treatment strategy for the treatment of HNSCC patients.
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Affiliation(s)
- Bhavna Kumar
- Department of Otolaryngology-Head and Neck Surgery; The Ohio State University Wexner Medical Center, Columbus, OH, USA ; The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Arti Yadav
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - James C Lang
- Department of Otolaryngology-Head and Neck Surgery; The Ohio State University Wexner Medical Center, Columbus, OH, USA ; The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Theodoros N Teknos
- Department of Otolaryngology-Head and Neck Surgery; The Ohio State University Wexner Medical Center, Columbus, OH, USA ; The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Pawan Kumar
- Department of Otolaryngology-Head and Neck Surgery; The Ohio State University Wexner Medical Center, Columbus, OH, USA
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48
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Zheng Y, Zou F, Wang J, Yin G, Le V, Fei Z, Liu J. Photodynamic therapy-mediated cancer vaccination enhances stem-like phenotype and immune escape, which can be blocked by thrombospondin-1 signaling through CD47 receptor protein. J Biol Chem 2015; 290:8975-86. [PMID: 25697354 PMCID: PMC4423687 DOI: 10.1074/jbc.m114.624965] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 02/17/2015] [Indexed: 01/11/2023] Open
Abstract
Like most of the strategies for cancer immunotherapy, photodynamic therapy-mediated vaccination has shown poor clinical outcomes in application. The aim of this study is to offer a glimpse at the mechanisms that are responsible for the failure based on cancer immuno-editing theory and to search for a positive solution. In this study we found that tumor cells were able to adapt themselves to the immune pressure exerted by vaccination. The survived tumor cells exhibited enhanced tumorigenic and stem-like phenotypes as well as undermined immunogenicity. Viewed as a whole, immune-selected tumor cells showed more malignant characteristics and the ability of immune escape, which might contribute to the eventual relapse. Thrombospondin-1 signaling via CD47 helped prevent tumor cells from becoming stem-like and rendered them vulnerable to immune attack. These findings prove that the TSP-1/CD47/SIRP-α signal axis is important to the evolution of tumor cells in the microenvironment of immunotherapy and identify thrombospondin-1 as a key signal with therapeutic benefits in overcoming long term relapse, providing new evidence for the clinical promise of cancer vaccination.
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Affiliation(s)
- Yuanhong Zheng
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Fangyuan Zou
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Jingjing Wang
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Guifang Yin
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Vanminh Le
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Zhewei Fei
- Department of General Surgery, Xinhua Hospital Chongming Branch, Shanghai Jiaotong University School of Medicine, 25 Nanmen Road, Chengqiaozhen, Chongming Shanghai, 202150, China
| | - Jianwen Liu
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
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49
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Lawn S, Krishna N, Pisklakova A, Qu X, Fenstermacher DA, Fournier M, Vrionis FD, Tran N, Chan JA, Kenchappa RS, Forsyth PA. Neurotrophin signaling via TrkB and TrkC receptors promotes the growth of brain tumor-initiating cells. J Biol Chem 2014; 290:3814-24. [PMID: 25538243 DOI: 10.1074/jbc.m114.599373] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Neurotrophins and their receptors are frequently expressed in malignant gliomas, yet their functions are largely unknown. Previously, we have shown that p75 neurotrophin receptor is required for glioma invasion and proliferation. However, the role of Trk receptors has not been examined. In this study, we investigated the importance of TrkB and TrkC in survival of brain tumor-initiating cells (BTICs). Here, we show that human malignant glioma tissues and also tumor-initiating cells isolated from fresh human malignant gliomas express the neurotrophin receptors TrkB and TrkC, not TrkA, and they also express neurotrophins NGF, BDNF, and neurotrophin 3 (NT3). Specific activation of TrkB and TrkC receptors by ligands BDNF and NT3 enhances tumor-initiating cell viability through activation of ERK and Akt pathways. Conversely, TrkB and TrkC knockdown or pharmacologic inhibition of Trk signaling decreases neurotrophin-dependent ERK activation and BTIC growth. Further, pharmacological inhibition of both ERK and Akt pathways blocked BDNF, and NT3 stimulated BTIC survival. Importantly, attenuation of BTIC growth by EGFR inhibitors could be overcome by activation of neurotrophin signaling, and neurotrophin signaling is sufficient for long term BTIC growth as spheres in the absence of EGF and FGF. Our results highlight a novel role for neurotrophin signaling in brain tumor and suggest that Trks could be a target for combinatorial treatment of malignant glioma.
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Affiliation(s)
- Samuel Lawn
- From the Tom Baker Cancer Centre, Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta T2N 4N2, Canada
| | | | | | | | | | - Michelle Fournier
- Tissue Core, Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, and
| | - Frank D Vrionis
- the Departments of Neuro-Oncology, the Department of Oncological Sciences, University of South Florida College of Medicine, Tampa, Florida 33612
| | - Nam Tran
- the Departments of Neuro-Oncology, the Department of Oncological Sciences, University of South Florida College of Medicine, Tampa, Florida 33612
| | - Jennifer A Chan
- From the Tom Baker Cancer Centre, Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta T2N 4N2, Canada
| | - Rajappa S Kenchappa
- the Departments of Neuro-Oncology, the Department of Oncological Sciences, University of South Florida College of Medicine, Tampa, Florida 33612
| | - Peter A Forsyth
- From the Tom Baker Cancer Centre, Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta T2N 4N2, Canada, the Departments of Neuro-Oncology, the Department of Oncological Sciences, University of South Florida College of Medicine, Tampa, Florida 33612
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50
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Veena MS, Wilken R, Zheng JY, Gholkar A, Venkatesan N, Vira D, Ahmed S, Basak SK, Dalgard CL, Ravichandran S, Batra RK, Kasahara N, Elashoff D, Fishbein MC, Whitelegge JP, Torres JZ, Wang MB, Srivatsan ES. p16 Protein and gigaxonin are associated with the ubiquitination of NFκB in cisplatin-induced senescence of cancer cells. J Biol Chem 2014; 289:34921-37. [PMID: 25331947 DOI: 10.1074/jbc.m114.568543] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The molecular mechanism of p16-mediated senescence in cisplatin-treated cancer cells is not fully understood. Here we show that cisplatin treatment of head and neck cancer cells results in nuclear transport of p16 leading to a molecular modification of NFκB. Chromatin immunoprecipitation assays show that this modification is associated with the inhibition of NFκB interacting with its DNA binding sequences, leading to decreased expression of NFκB-transcribed proteins. LCMS proteomic analysis of LAP-TAP-purified proteins from HeLa cells containing a tetracycline-inducible GFP-S peptide-NFκB expression system identified gigaxonin, an ubiquitin E3 ligase adaptor, as an NFκB-interacting protein. Immunoblotting and siRNA studies confirmed the NFκB-gigaxonin interaction and the dependence of this binding on p16-NFκB binding. Using gel shift assays, we have confirmed p16-NFκB and gigaxonin-NFκB interactions. Furthermore, we have observed increased NFκB ubiquitination with cisplatin treatment that is abolished in the absence of p16 and gigaxonin expression. Analysis of 103 primary tumors has shown that increased nuclear p16 expression correlates with enhanced survival of head and neck cancer patients (p < 0.0000542), indicating the importance of nuclear p16 expression in prognosis. Finally, p16 expression is associated with reduced cytokine expression and the presence of human papilloma virus in chemoradiation-sensitive basaloid tumors. However, the absence of p16 expression is associated with enhanced cytokine expression and the absence of human papilloma virus in aggressive tumors. These results clearly demonstrate that nuclear p16 and gigaxonin play an important role in chemosensitivity of head and neck cancers through ubiquitination of NFκB.
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Affiliation(s)
- Mysore S Veena
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Reason Wilken
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Jun-Ying Zheng
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Ankur Gholkar
- Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095
| | - Natarajan Venkatesan
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Darshni Vira
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073, Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095
| | - Sameer Ahmed
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095
| | - Saroj K Basak
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Clifton L Dalgard
- Departments of Anatomy, Physiology, and Genetics, Uniformed Services University, Bethesda, Maryland 20814
| | - Sandhiya Ravichandran
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073
| | - Raj K Batra
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California 90073, Department of Medicine and Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California 90095
| | | | | | - Michael C Fishbein
- Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Julian P Whitelegge
- Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, California 90095, and
| | - Jorge Z Torres
- Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095, Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California 90095
| | - Marilene B Wang
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073, Department of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095, Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California 90095
| | - Eri S Srivatsan
- From the Department of Surgery, Veterans Affairs Greater Los Angeles Healthcare System/David Geffen School of Medicine at UCLA, Los Angeles, California 90073, Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California 90095
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