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Ikliptikawati DK, Makiyama K, Hazawa M, Wong RW. Unlocking the Gateway: The Spatio-Temporal Dynamics of the p53 Family Driven by the Nuclear Pores and Its Implication for the Therapeutic Approach in Cancer. Int J Mol Sci 2024; 25:7465. [PMID: 39000572 PMCID: PMC11242911 DOI: 10.3390/ijms25137465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024] Open
Abstract
The p53 family remains a captivating focus of an extensive number of current studies. Accumulating evidence indicates that p53 abnormalities rank among the most prevalent in cancer. Given the numerous existing studies, which mostly focus on the mutations, expression profiles, and functional perturbations exhibited by members of the p53 family across diverse malignancies, this review will concentrate more on less explored facets regarding p53 activation and stabilization by the nuclear pore complex (NPC) in cancer, drawing on several studies. p53 integrates a broad spectrum of signals and is subject to diverse regulatory mechanisms to enact the necessary cellular response. It is widely acknowledged that each stage of p53 regulation, from synthesis to degradation, significantly influences its functionality in executing specific tasks. Over recent decades, a large body of data has established that mechanisms of regulation, closely linked with protein activation and stabilization, involve intricate interactions with various cellular components. These often transcend canonical regulatory pathways. This new knowledge has expanded from the regulation of genes themselves to epigenomics and proteomics, whereby interaction partners increase in number and complexity compared with earlier paradigms. Specifically, studies have recently shown the involvement of the NPC protein in such complex interactions, underscoring the further complexity of p53 regulation. Furthermore, we also discuss therapeutic strategies based on recent developments in this field in combination with established targeted therapies.
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Affiliation(s)
- Dini Kurnia Ikliptikawati
- Cell-Bionomics Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan;
| | - Kei Makiyama
- Laboratory of Molecular Cell Biology, Division of Transdisciplinary Sciences, Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan
| | - Masaharu Hazawa
- Cell-Bionomics Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan;
- Laboratory of Molecular Cell Biology, Division of Transdisciplinary Sciences, Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan
| | - Richard W. Wong
- Cell-Bionomics Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan;
- Laboratory of Molecular Cell Biology, Division of Transdisciplinary Sciences, Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 9201192, Japan
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2
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Yedla P, Bhamidipati P, Syed R, Amanchy R. Working title: Molecular involvement of p53-MDM2 interactome in gastrointestinal cancers. Cell Biochem Funct 2024; 42:e4075. [PMID: 38924101 DOI: 10.1002/cbf.4075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024]
Abstract
The interaction between murine double minute 2 (MDM2) and p53, marked by transcriptional induction and feedback inhibition, orchestrates a functional loop dictating cellular fate. The functional loop comprising p53-MDM2 axis is made up of an interactome consisting of approximately 81 proteins, which are spatio-temporally regulated and involved in DNA repair mechanisms. Biochemical and genetic alterations of the interactome result in dysregulation of the p53-mdm2 axis that leads to gastrointestinal (GI) cancers. A large subset of interactome is well known and it consists of proteins that either stabilize p53 or MDM2 and proteins that target the p53-MDM2 complex for ubiquitin-mediated destruction. Upstream signaling events brought about by growth factors and chemical messengers invoke a wide variety of posttranslational modifications in p53-MDM2 axis. Biochemical changes in the transactivation domain of p53 impact the energy landscape, induce conformational switching, alter interaction potential and could change solubility of p53 to redefine its co-localization, translocation and activity. A diverse set of chemical compounds mimic physiological effectors and simulate biochemical modifications of the p53-MDM2 interactome. p53-MDM2 interactome plays a crucial role in DNA damage and repair process. Genetic aberrations in the interactome, have resulted in cancers of GI tract (pancreas, liver, colorectal, gastric, biliary, and esophageal). We present in this article a review of the overall changes in the p53-MDM2 interactors and the effectors that form an epicenter for the development of next-generation molecules for understanding and targeting GI cancers.
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Affiliation(s)
- Poornachandra Yedla
- Division of Applied Biology, CSIR-IICT (Indian Institute of Chemical Technology), Ministry of Science and Technology (GOI), Hyderabad, Telangana, India
- Department of Pharmacogenomics, Institute of Translational Research, Asian Healthcare Foundation, Hyderabad, Telangana, India
| | - Pranav Bhamidipati
- Division of Applied Biology, CSIR-IICT (Indian Institute of Chemical Technology), Ministry of Science and Technology (GOI), Hyderabad, Telangana, India
- Department of Life Sciences, Imperial College London, London, UK
| | - Riyaz Syed
- Division of Applied Biology, CSIR-IICT (Indian Institute of Chemical Technology), Ministry of Science and Technology (GOI), Hyderabad, Telangana, India
| | - Ramars Amanchy
- Division of Applied Biology, CSIR-IICT (Indian Institute of Chemical Technology), Ministry of Science and Technology (GOI), Hyderabad, Telangana, India
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3
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Logotheti S, Papadaki E, Zolota V, Logothetis C, Vrahatis AG, Soundararajan R, Tzelepi V. Lineage Plasticity and Stemness Phenotypes in Prostate Cancer: Harnessing the Power of Integrated "Omics" Approaches to Explore Measurable Metrics. Cancers (Basel) 2023; 15:4357. [PMID: 37686633 PMCID: PMC10486655 DOI: 10.3390/cancers15174357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Prostate cancer (PCa), the most frequent and second most lethal cancer type in men in developed countries, is a highly heterogeneous disease. PCa heterogeneity, therapy resistance, stemness, and lethal progression have been attributed to lineage plasticity, which refers to the ability of neoplastic cells to undergo phenotypic changes under microenvironmental pressures by switching between developmental cell states. What remains to be elucidated is how to identify measurements of lineage plasticity, how to implement them to inform preclinical and clinical research, and, further, how to classify patients and inform therapeutic strategies in the clinic. Recent research has highlighted the crucial role of next-generation sequencing technologies in identifying potential biomarkers associated with lineage plasticity. Here, we review the genomic, transcriptomic, and epigenetic events that have been described in PCa and highlight those with significance for lineage plasticity. We further focus on their relevance in PCa research and their benefits in PCa patient classification. Finally, we explore ways in which bioinformatic analyses can be used to determine lineage plasticity based on large omics analyses and algorithms that can shed light on upstream and downstream events. Most importantly, an integrated multiomics approach may soon allow for the identification of a lineage plasticity signature, which would revolutionize the molecular classification of PCa patients.
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Affiliation(s)
- Souzana Logotheti
- Department of Pathology, University of Patras, 26504 Patras, Greece; (S.L.); (E.P.); (V.Z.)
| | - Eugenia Papadaki
- Department of Pathology, University of Patras, 26504 Patras, Greece; (S.L.); (E.P.); (V.Z.)
- Department of Informatics, Ionian University, 49100 Corfu, Greece;
| | - Vasiliki Zolota
- Department of Pathology, University of Patras, 26504 Patras, Greece; (S.L.); (E.P.); (V.Z.)
| | - Christopher Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | | | - Rama Soundararajan
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Vasiliki Tzelepi
- Department of Pathology, University of Patras, 26504 Patras, Greece; (S.L.); (E.P.); (V.Z.)
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4
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Serbis A, Tsinopoulou VR, Papadopoulou A, Kolanis S, Sakellari EI, Margaritis K, Litou E, Ntouma S, Giza S, Kotanidou EP, Galli-Tsinopoulou A. Predictive Factors for Pediatric Craniopharyngioma Recurrence: An Extensive Narrative Review. Diagnostics (Basel) 2023; 13:diagnostics13091588. [PMID: 37174978 PMCID: PMC10177772 DOI: 10.3390/diagnostics13091588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/20/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Despite being classified as benign tumors, craniopharyngiomas (CPs) are associated with significant morbidity and mortality due to their location, growth pattern, and tendency to recur. Two types can be identified depending on age distribution, morphology, and growth pattern, adamantinomatous and papillary. The adamantinomatous CP is one of the most frequently encountered central nervous system tumors in childhood. Our aim was to review the relevant literature to identify clinical, morphological, and immunohistochemical prognostic factors that have been implicated in childhood-onset CP recurrence. Lack of radical surgical removal of the primary tumor by an experienced neurosurgical team and radiotherapy after a subtotal excision has been proven to significantly increase the recurrence rate of CP. Other risk factors that have been consistently recognized in the literature include younger age at diagnosis (especially <5 years), larger tumor size at presentation, cystic appearance, difficult tumor location, and tight adherence to surrounding structures, as well as the histological presence of whorl-like arrays. In addition, several other risk factors have been studied, albeit with conflicting results, especially in the pediatric population. Identifying risk factors for CP recurrence is of utmost importance for the successful management of these patients in order to ultimately ensure the best prognosis.
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Affiliation(s)
- Anastasios Serbis
- Department of Pediatrics, School of Medicine, University of Ioannina, St. Niarhcos Avenue, 45500 Ioannina, Greece
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Vasiliki Rengina Tsinopoulou
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Anastasia Papadopoulou
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Savvas Kolanis
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Eleni I Sakellari
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Kosmas Margaritis
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Eleni Litou
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Stergianna Ntouma
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Styliani Giza
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Eleni P Kotanidou
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
| | - Assimina Galli-Tsinopoulou
- Unit of Pediatric Endocrinology and Metabolism, 2nd Department of Pediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, Stilponos Kyriakidi 1, 54636 Thessaloniki, Greece
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5
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Shelash Al-Hawary SI, Abdalkareem Jasim S, M Kadhim M, Jaafar Saadoon S, Ahmad I, Romero Parra RM, Hasan Hammoodi S, Abulkassim R, M Hameed N, K Alkhafaje W, Mustafa YF, Javed Ansari M. Curcumin in the treatment of liver cancer: From mechanisms of action to nanoformulations. Phytother Res 2023; 37:1624-1639. [PMID: 36883769 DOI: 10.1002/ptr.7757] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/10/2023] [Accepted: 01/22/2023] [Indexed: 03/09/2023]
Abstract
Liver cancer is the sixth most prevalent cancer and ranks third in cancer-related death, after lung and colorectal cancer. Various natural products have been discovered as alternatives to conventional cancer therapy strategies, including radiotherapy, chemotherapy, and surgery. Curcumin (CUR) with antiinflammatory, antioxidant, and antitumor activities has been associated with therapeutic benefits against various cancers. It can regulate multiple signaling pathways, such as PI3K/Akt, Wnt/β-catenin, JAK/STAT, p53, MAPKs, and NF-ĸB, which are involved in cancer cell proliferation, metastasis, apoptosis, angiogenesis, and autophagy. Due to its rapid metabolism, poor oral bioavailability, and low solubility in water, CUR application in clinical practices is restricted. To overcome these limitations, nanotechnology-based delivery systems have been applied to use CUR nanoformulations with added benefits, such as reducing toxicity, improving cellular uptake, and targeting tumor sites. Besides the anticancer activities of CUR in combating various cancers, especially liver cancer, here we focused on the CUR nanoformulations, such as micelles, liposomes, polymeric, metal, and solid lipid nanoparticles, and others, in the treatment of liver cancer.
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Affiliation(s)
| | - Saade Abdalkareem Jasim
- Medical Laboratory Techniques Department, Al-maarif University College, Al-Anbar-Ramadi, Iraq
| | - Mustafa M Kadhim
- Medical Laboratory Techniques Department, Al-Farahidi University, Baghdad, Iraq.,Medical Laboratory Techniques Department, Al-Turath University College, Baghdad, Iraq
| | | | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | | | | | | | - Noora M Hameed
- Anesthesia Techniques, Al-Nisour University College, Baghdad, Iraq
| | - Waleed K Alkhafaje
- Anesthesia Techniques Department, Al-Mustaqbal University College, Babylon, Iraq
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq
| | - Mohammad Javed Ansari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-kharj, Saudi Arabia
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6
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Hamadou WS, Bouali N, Alhejaili EB, Soua Z, Patel M, Adnan M, Siddiqui AJ, Abdel-Gadir AM, Sulieman AME, Snoussi M, Badraoui R. Acacia Honey-derived Bioactive Compounds Exhibit Induction of p53-dependent Apoptosis in the MCF-7 Human Breast Cancer Cell Line. Pharmacogn Mag 2023. [DOI: 10.1177/09731296221145076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Background Research studies have focused on discovering new anti-proliferative and pro-apoptotic agents derived from natural products from which honey constitutes a prominent candidate. The Acacia honey (AH) is known to display anticancer activity, but the mechanisms of action are still not well defined. Objectives Using in vitro and computational approaches, we aimed to assess the interaction among selected bioactive compounds derived from AH, with the apoptotic protein p53, which could trigger apoptosis. Methods The phytocompounds of AH were investigated via gas chromatography–mass spectrophotometry analysis. The cytotoxic effect and induced apoptosis on the MCF-7 breast cancer cell line were assessed by 3-(4,5-dimethylthiazolyl-2)-2,5 diphenyltetrazolium bromide and acridine orange-ethidium bromide staining approaches. The molecular docking analysis between AH compounds and p53 was carried out. Results The drug-likeness prediction revealed that most of the identified compounds meet Lipinski’s rules. We demonstrate that AH exerts an interesting cytotoxic effect in a dose-dependent manner against the MCF-7 cell line with IC50 5.053µg/mL. Significant cell alterations and notable induced apoptosis were detected when cells were treated with AH. The molecular docking analysis revealed that melezitose is among the most important potential bioactive compounds that interact with p53 leading to apoptosis. The binding affinity was −8.1 kcal/mol, and the closest molecular interactions in the active site included 10 residues, which could explain the potential biological activity. Conclusion This work sheds light on AH as a significant source of bioactive chemicals with potential for promoting apoptosis that may be exploited as an alternative therapy for breast cancer.
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Affiliation(s)
- Walid Sabri Hamadou
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
- Department of Biochemistry, Medicine Faculty of Sousse, Sousse, Tunisia
| | - Nouha Bouali
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
| | | | - Zohra Soua
- Department of Biochemistry, Medicine Faculty of Sousse, Sousse, Tunisia
| | - Mitesh Patel
- Department of Biotechnology, Parul Institute of Applied Sciences and Centre of Research for Development, Parul University, Vadodara, Gujarat, India
| | - Mohd Adnan
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
| | - Arif Jamal Siddiqui
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
| | | | | | - Mejdi Snoussi
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bioresources, High Institute of Biotechnology University of Monastir, Monastir, Tunisia
| | - Riadh Badraoui
- Department of Biology, University of Hail, College of Science, Hail, Saudi Arabia
- Faculty of Medicine, University of Tunis El Manar, La Rabta, Tunis, Tunisia
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7
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Zhang H, Li X, Jia M, Ji J, Wu Z, Chen X, Yu D, Zheng Y, Zhao Y. Roles of H19/miR-29a-3p/COL1A1 axis in COE-induced lung cancer. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120194. [PMID: 36150622 DOI: 10.1016/j.envpol.2022.120194] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/06/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Occupational lung cancer caused by coke oven emissions (COE) has attracted increasing attention, but the mechanism is not clear. Many evidences show ceRNA (competing endogenous RNA) networks play important regulatory roles in cancers. In this study, we aimed to construct and verify the ceRNA regulatory network in the occurrence of COE-induced lung squamous cell carcinoma (LUSC). We performed RNA sequencing with lung bronchial epithelial cell (16HBE) and COE induced malignant transformed cell (Rf). Furthermore, we analyzed RNA sequencing data of LUSC and adjacent tissues in the cancer genome atlas (TCGA) database. Combined our data and TCGA data to determine the differentially expressed lncRNAs, miRNAs, mRNAs. lncBASE, miRDB and miRTarBase were used to predict the binding relationship between lncRNA and miRNA, miRNA and mRNA. Based on these, we construct the ceRNA network. FREMSA, dual-luciferase reporter assay, quantitative real-time PCR (qRT-PCR), western-blot were used to verify the regulatory axis. CCK8 assay, phalloidin staining, p53 detection were used to explore the roles of this axis in the COE induced malignant transformation. Results showed 7 lncRNAs, 7 miRNAs and 146 mRNAs were identified. Among these, we constructed a ceRNA network including 1 lncRNA, 2 miRNAs and 9 mRNAs. Further verification confirmed the trend of lncRNA H19, miR-29a-3p and COL1A1 were consistent with sequencing results. H19 and COL1A1 were significantly higher in Rf than in 16HBE and miR-29a-3p was reverse. Regulatory investigation revealed H19 increased COL1A1 expression by sponging miR-29a-3p. Knockdown of H19, COL1A1 or overexpression of miR-29a-3p in Rf cells could inhibit cell proliferation, increased cell adhesion and p53 level. However, knockdown of H19 while suppressing the miR-29a-3p partially rescue the malignant phenotype of Rf caused by H19. In conclusion, all these indicated H19 functioned as a ceRNA to increase COL1A1 by sponging miR-29a-3p and promoted COE-induced cell malignant transformation.
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Affiliation(s)
- Heng Zhang
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Xinmei Li
- Department of Environment and Health, Tianjin Institute of Environmental & Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment & Food Safety, Tianjin, China
| | - Mengmeng Jia
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Jing Ji
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Zhaoxu Wu
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Xian Chen
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Dianke Yu
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Yuxin Zheng
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Yanjie Zhao
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China.
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8
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Anticancer peptides mechanisms, simple and complex. Chem Biol Interact 2022; 368:110194. [PMID: 36195187 DOI: 10.1016/j.cbi.2022.110194] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/12/2022] [Accepted: 09/22/2022] [Indexed: 11/22/2022]
Abstract
Peptide therapy has started since 1920s with the advent of insulin application, and now it has emerged as a new approach in treatment of diseases including cancer. Using anti-cancer peptides (ACPs) is a promising way of cancer therapy as ACPs are continuing to be approved and arrived at major pharmaceutical markets. Traditional cancer treatments face different problems like intensive adverse effects to patient's body, cell resistance to conventional chemical drugs and in some worse cases the occurrence of cell multidrug resistance (MDR) of cancerous tissues against chemotherapy. On the other hand, there are some benefits conceived for peptides usage in treatment of diseases specifically cancer, as these compounds present favorable characteristics such as smaller size, high activity, low immunogenicity, good biocompatibility in vivo, convenient and rapid way of synthesis, amenable to sequence modification and revision and there is no limitation for the type of cargo they carry. It is possible to achieve an optimum molecular and functional structure of peptides based on previous experience and bank of peptide motif data which may result in novel peptide design. Bioactive peptides are able to form pores in cell membrane and induce necrosis or apoptosis of abnormal cells. Moreover, recent researches have focused on the tumor recognizing peptide motifs with the ability to permeate to cancerous cells with the aim of cancer treatment at earlier stages. In this strategy the most important factors for addressing cancer are choosing peptides with easy accessibility to tumor cell without cytotoxicity effect towards normal cells. The peptides must also meet acceptable pharmacokinetic requirements. In this review, the characteristics of peptides and cancer cells are discussed. The various mechanisms of peptides' action proposed against cancer cells make the next part of discussion. It will be followed by giving information on peptides application, various methods of peptide designing along with introducing various databases. Future aspects of peptides for employing in area of cancer treatment come as conclusion at the end.
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9
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Li J, Guo M, Chen L, Chen Z, Fu Y, Chen Y. p53 amyloid aggregation in cancer: function, mechanism, and therapy. Exp Hematol Oncol 2022; 11:66. [PMID: 36171607 PMCID: PMC9520902 DOI: 10.1186/s40164-022-00317-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/13/2022] [Indexed: 11/28/2022] Open
Abstract
Similar to neurodegenerative diseases, the concept that tumors are prion like diseases has been proposed in recent years. p53, the most well-known tumor suppressor, has been extensively studied for its expression, mutation, and function in various tumors. Currently, an interesting phenomenon of p53 prion-like aggregation has been found in several tumors, and studies have found that its pathological aggregation may lead to functional alterations and ultimately affect tumor progression. It has been demonstrated that the mechanism of p53 aggregation involves its mutation, domains, isoform, etc. In addition to p53 itself, some other factors, including Zn2+ concentration, pH, temperature and chaperone abnormalities, can also contribute to p53 aggregation. Although there are some studies about the mechanism and role of p53 aggregation and amyloidosis in tumors, there still exist some controversies. In this paper, we review the mechanism of p53 amyloid fibril structure and discuss the characteristics and effects of p53 amyloid aggregation, as well as the pathogenic mechanism leading to the occurrence of aggregation in tumors. Finally, we summarize the various inhibitors targeting p53 aggregation and prion-like behavior. In conclusion, a comprehensive understanding of p53 aggregation can expand our understanding of the causes leading its loss of physiological function and that targeting p53 aggregation might be a promising therapeutic strategy for tumor therapy.
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Affiliation(s)
- Jingzhi Li
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics & State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.,Department of Obstetrics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Ming Guo
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics & State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Lin Chen
- Molecular and Computational Biology Program, Department of Biological Sciences and Department of Chemistry, University of Southern California, Los Angeles, CA, 90089, USA
| | - Zhuchu Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics & State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Ying Fu
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics & State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics & State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. .,Department of Obstetrics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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10
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Tram J, Mesnard JM, Peloponese JM. Alternative RNA splicing in cancer: what about adult T-cell leukemia? Front Immunol 2022; 13:959382. [PMID: 35979354 PMCID: PMC9376482 DOI: 10.3389/fimmu.2022.959382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
Eukaryotic cells employ a broad range of mechanisms to regulate gene expression. Among others, mRNA alternative splicing is a key process. It consists of introns removal from an immature mRNA (pre-mRNA) via a transesterification reaction to create a mature mRNA molecule. Large-scale genomic studies have shown that in the human genome, almost 95% of protein-encoding genes go through alternative splicing and produce transcripts with different exons combinations (and sometimes retained introns), thus increasing the proteome diversity. Considering the importance of RNA regulation in cellular proliferation, survival, and differentiation, alterations in the alternative splicing pathway have been linked to several human cancers, including adult T-cell leukemia/lymphoma (ATL). ATL is an aggressive and fatal malignancy caused by the Human T-cell leukemia virus type 1 (HTLV-1). HTLV-1 genome encodes for two oncoproteins: Tax and HBZ, both playing significant roles in the transformation of infected cells and ATL onset. Here, we review current knowledge on alternative splicing and its link to cancers and reflect on how dysregulation of this pathway could participate in HTLV-1-induced cellular transformation and adult T-cell leukemia/lymphoma development.
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11
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Role of p53 in Regulating Radiation Responses. LIFE (BASEL, SWITZERLAND) 2022; 12:life12071099. [PMID: 35888186 PMCID: PMC9319710 DOI: 10.3390/life12071099] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 12/12/2022]
Abstract
p53 is known as the guardian of the genome and plays various roles in DNA damage and cancer suppression. The p53 gene was found to express multiple p53 splice variants (isoforms) in a physiological, tissue-dependent manner. The various genes that up- and down-regulated p53 are involved in cell viability, senescence, inflammation, and carcinogenesis. Moreover, p53 affects the radioadaptive response. Given that several studies have already been published on p53, this review presents its role in the response to gamma irradiation by interacting with MDM2, NF-κB, and miRNA, as well as in the inflammation processes, senescence, carcinogenesis, and radiation adaptive responses. Finally, the potential of p53 as a biomarker is discussed.
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12
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P63 and P73 Activation in Cancers with p53 Mutation. Biomedicines 2022; 10:biomedicines10071490. [PMID: 35884795 PMCID: PMC9313412 DOI: 10.3390/biomedicines10071490] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 12/27/2022] Open
Abstract
The members of the p53 family comprise p53, p63, and p73, and full-length isoforms of the p53 family have a tumor suppressor function. However, p53, but not p63 or p73, has a high mutation rate in cancers causing it to lose its tumor suppressor function. The top and second-most prevalent p53 mutations are missense and nonsense mutations, respectively. In this review, we discuss possible drug therapies for nonsense mutation and a missense mutation in p53. p63 and p73 activators may be able to replace mutant p53 and act as anti-cancer drugs. Herein, these p63 and p73 activators are summarized and how to improve these activator responses, particularly focusing on p53 gain-of-function mutants, is discussed.
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Cytoplasmic p53β Isoforms Are Associated with Worse Disease-Free Survival in Breast Cancer. Int J Mol Sci 2022; 23:ijms23126670. [PMID: 35743117 PMCID: PMC9223648 DOI: 10.3390/ijms23126670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 12/02/2022] Open
Abstract
TP53 mutations are associated with tumour progression, resistance to therapy and poor prognosis. However, in breast cancer, TP53′s overall mutation frequency is lower than expected (~25%), suggesting that other mechanisms may be responsible for the disruption of this critical tumour suppressor. p53 isoforms are known to enhance or disrupt p53 pathway activity in cell- and context-specific manners. Our previous study revealed that p53 isoform mRNA expression correlates with clinicopathological features and survival in breast cancer and may account for the dysregulation of the p53 pathway in the absence of TP53 mutations. Hence, in this study, the protein expression of p53 isoforms, transactivation domain p53 (TAp53), p53β, Δ40p53, Δ133p53 and Δ160p53 was analysed using immunohistochemistry in a cohort of invasive ductal carcinomas (n = 108). p53 isoforms presented distinct cellular localisation, with some isoforms being expressed in tumour cells and others in infiltrating immune cells. Moreover, high levels of p53β, most likely to be N-terminally truncated β variants, were significantly associated with worse disease-free survival, especially in tumours with wild-type TP53. To the best of our knowledge, this is the first study that analysed the endogenous protein levels of p53 isoforms in a breast cancer cohort. Our findings suggest that p53β may be a useful prognostic marker.
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Makgoo L, Mosebi S, Mbita Z. Molecular Mechanisms of HIV Protease Inhibitors Against HPV-Associated Cervical Cancer: Restoration of TP53 Tumour Suppressor Activities. Front Mol Biosci 2022; 9:875208. [PMID: 35620479 PMCID: PMC9127998 DOI: 10.3389/fmolb.2022.875208] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/12/2022] [Indexed: 12/24/2022] Open
Abstract
Cervical cancer is a Human Papilloma virus-related disease, which is on the rise in a number of countries, globally. Two essential oncogenes, E6 and E7, drive cell transformation and cancer development. These two oncoproteins target two of the most important tumour suppressors, p53 and pRB, for degradation through the ubiquitin ligase pathway, thus, blocking apoptosis activation and deregulation of cell cycle. This pathway can be exploited for anticancer therapeutic interventions, and Human Immunodeficiency Virus Protease Inhibitors (HIV-PIs) have attracted a lot of attention for this anticancer drug development. HIV-PIs have proven effective in treating HPV-positive cervical cancers and shown to restore impaired or deregulated p53 in HPV-associated cervical cancers by inhibiting the 26S proteasome. This review will evaluate the role players, such as HPV oncoproteins involved cervical cancer development and how they are targeted in HIV protease inhibitors-induced p53 restoration in cervical cancer. This review also covers the therapeutic potential of HIV protease inhibitors and molecular mechanisms behind the HIV protease inhibitors-induced p53-dependent anticancer activities against cervical cancer.
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Affiliation(s)
- Lilian Makgoo
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
| | - Salerwe Mosebi
- Department of Life and Consumer Sciences, University of South Africa, Florida, South Africa
| | - Zukile Mbita
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
- *Correspondence: Zukile Mbita,
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15
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Cai BH, Bai ZY, Lien CF, Yu SJ, Lu RY, Wu MH, Wu WC, Chen CC, Hsu YC. NAMPT Inhibitor and P73 Activator Represses P53 R175H Mutated HNSCC Cell Proliferation in a Synergistic Manner. Biomolecules 2022; 12:biom12030438. [PMID: 35327630 PMCID: PMC8946684 DOI: 10.3390/biom12030438] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 01/25/2023] Open
Abstract
The p53 family has the following three members: p53, p63 and p73. p53 is a tumor suppressor gene that frequently exhibits mutation in head and neck cancer. Most p53 mutants are loss-of-function (LoF) mutants, but some acquire some oncogenic function, such as gain of function (GoF). It is known that the aggregation of mutant p53 can induce p53 GoF. The p73 activators RETRA and NSC59984 have an anti-cancer effect in p53 mutation cells, but we found that p73 activators were not effective in all head and neck squamous cell carcinoma (HNSCC) cell lines, with different p53 mutants. A comparison of the gene expression profiles of several regulator(s) in mutant HNSCC cells with or without aggregation of p53 revealed that nicotinamide phosphoribosyltransferase (NAMPT) is a key regulator of mutant p53 aggregation. An NAMPT inhibitor, to reduce abnormal aggregation of mutant p53, used in combination with a p73 activator, was able to effectively repress growth in HNSCC cells with p53 GoF mutants. This study, therefore, suggests a potential combination therapy approach for HNSCC with a p53 GoF mutation.
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Affiliation(s)
- Bi-He Cai
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-F.L.); (M.-H.W.)
- Correspondence: (B.-H.C.); (C.-C.C.); (Y.-C.H.)
| | - Zhi-Yu Bai
- Department of Medical Laboratory Science, I-Shou University, Kaohsiung 82445, Taiwan; (Z.-Y.B.); (S.-J.Y.); (R.-Y.L.)
| | - Ching-Feng Lien
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-F.L.); (M.-H.W.)
- Department of Otolaryngology-Head and Neck Surgery, E-DA Hospital, Kaohsiung 82445, Taiwan
| | - Si-Jie Yu
- Department of Medical Laboratory Science, I-Shou University, Kaohsiung 82445, Taiwan; (Z.-Y.B.); (S.-J.Y.); (R.-Y.L.)
| | - Rui-Yu Lu
- Department of Medical Laboratory Science, I-Shou University, Kaohsiung 82445, Taiwan; (Z.-Y.B.); (S.-J.Y.); (R.-Y.L.)
| | - Ming-Han Wu
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-F.L.); (M.-H.W.)
| | - Wei-Chen Wu
- Department of Physical Therapy, I-Shou University, Kaohsiung 82445, Taiwan;
| | - Chia-Chi Chen
- Department of Pathology, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan
- Correspondence: (B.-H.C.); (C.-C.C.); (Y.-C.H.)
| | - Yi-Chiang Hsu
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-F.L.); (M.-H.W.)
- Correspondence: (B.-H.C.); (C.-C.C.); (Y.-C.H.)
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Abstract
In spite of the significant technical and technological progress in neurosurgery and the continuous discoveries by the basic research, adamantinomatous craniopharyngioma remains a significant clinical challenge. Actually, the huge size of the tumor, its multiple cystic components, the encasement of Willis' circle and optic pathways, and the invasion of the hypothalamus often prevent its safe surgical resection. Moreover, the local aggressiveness of the tumor accounts for a high risk of recurrence even after a gross total resection. For these reasons, more and more efforts are being dedicated to enhance the knowledge about AC and improve the tools for its treatment.This paper is dedicated to the most recent advances concerning the AC management. Promising, new insights come for the basic research, thanks to the updates on the role of the WNT-β-catenin pathway (important for the tumor genesis and progression, not yet developed enough for a safe target therapy in children but useful for determining the prognosis) and the inflammatory mediators (widely overexpressed, especially by the cyst of the tumor, and for which target therapies are being developed). Moreover, further factors and pathways are under investigation.Also the development of new treatment strategies accounts for the improvement of the prognosis and the quality of life of AC patients. The enhancement of the experience with the endoscopic techniques (both transsphenoidal and transventricular approaches) actually allows to perform a less invasive but effective surgery that can be coupled with new modalities of radiation therapy aiming at obtaining a reliable control of the disease and protecting the endocrinological, ophthalmological, and neurological functions. A special mention is finally deserved by the techniques specifically designed for the intracystic therapy (as cyst fenestration alone or in combination with administration of radionuclides or bleomycin or interferon-α) that are here analyzed together with the aforementioned advances.
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Affiliation(s)
- Federico Bianchi
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alberto Benato
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Luca Massimi
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
- Università Cattolica del Sacro Cuore-Rome, Rome, Italy.
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17
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Xeroderma Pigmentosum C: A Valuable Tool to Decipher the Signaling Pathways in Skin Cancers. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6689403. [PMID: 34630850 PMCID: PMC8495593 DOI: 10.1155/2021/6689403] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 03/24/2021] [Accepted: 04/19/2021] [Indexed: 12/13/2022]
Abstract
Xeroderma pigmentosum (XP) is a rare autosomal genodermatosis that manifests clinically with pronounced sensitivity to ultraviolet (UV) radiation and the high probability of the occurrence of different skin cancer types in XP patients. XP is mainly caused by mutations in XP-genes that are involved in the nucleotide excision repair (NER) pathway that functions in the removal of bulky DNA adducts. Besides, the aggregation of DNA lesions is a life-threatening event that might be a key for developing various mutations facilitating cancer appearance. One of the key players of NER is XPC that senses helical distortions found in damaged DNA. The majority of XPC gene mutations are nonsense, and some are missense leading either to the loss of XPC protein or to the expression of a truncated nonfunctional version. Given that no cure is yet available, XPC patients should be completely protected and isolated from all types of UV radiations (UVR). Although it is still poorly understood, the characterization of the proteomic signature of an XPC mutant is essential to identify mediators that could be targeted to prevent cancer development in XPC patients. Unraveling this proteomic signature is fundamental to decipher the signaling pathways affected by the loss of XPC expression following exposure to UVB radiation. In this review, we will focus on the signaling pathways disrupted in skin cancer, pathways modulating NER's function, including XPC, to disclose signaling pathways associated with XPC loss and skin cancer occurrence.
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18
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Shirvani H, Bazgir B, Rahimi M, Isanejad A, Samadi M, Sobhani V, Alizadeh AM, Arabzadeh E. Therapeutic and preventive effects of exercise training on metabolic regulators/markers in mouse colorectal cancer cells. SPORT SCIENCES FOR HEALTH 2021. [DOI: 10.1007/s11332-021-00826-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Batool A, Hazafa A, Ahmad S, Khan HA, Abideen HMZ, Zafar A, Bilal M, Iqbal HMN. Treatment of lymphomas via regulating the Signal transduction pathways by natural therapeutic approaches: A review. Leuk Res 2021; 104:106554. [PMID: 33684680 DOI: 10.1016/j.leukres.2021.106554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023]
Abstract
Lymphoma is a heterogeneous group of malignancies, which comprises 4.2 % of all new cancer cases and 3.3 % of all cancer deaths in 2019, globally. The dysregulation of immune system, certain bacterial or viral infections, autoimmune diseases, and immune suppression are associated with a high risk of lymphoma. Although several conventional strategies have improved during the past few decades, but their detrimental impacts remain an obstacle to be resolved. However, natural compounds are considered a good option in the treatment of lymphomas because of their easy accessibility, specific mode of action, high biodegradability, and cost-effectiveness. Vegetables, fruits, and beverages are the primary sources of natural active compounds. The present review investigated the activities of different natural medicinal compounds including curcumin, MK615, resveratrol, bromelain, EGCG, and Annonaceous acetogenins to treat lymphomas. Moreover, in vitro and in vivo studies, classification, risk factors, and diagnosis of lymphoma are also discussed in the present review. The accumulated data proposed that natural compounds regulate the signaling pathways at the level of cell proliferation, apoptosis, and cell cycle to exhibit anti-lymphoma activities both in-vivo and in-vitro studies and suggested that these active compounds could be a good therapeutic option in the treatment of different types of lymphomas.
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Affiliation(s)
- Ammara Batool
- Department of Biochemistry, Faculty of Sciences, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Abu Hazafa
- Department of Biochemistry, Faculty of Sciences, University of Agriculture, Faisalabad, 38000, Pakistan; International Society of Engineering Science and Technology, Coventry, CV1 5EH, United Kingdom.
| | - Saeed Ahmad
- Centre of Biotechnology and Microbiology, University of Peshawar, Peshawar, 25120, Pakistan
| | - Hamid Ali Khan
- Institute of Biological Sciences, Sarhad University of Science and Information Technology, Peshawar, 25000, Pakistan
| | - Hafiz M Z Abideen
- Institute of Public Health, The University of Lahore, Lahore, 54590, Pakistan
| | - Ayesha Zafar
- Institute of Biochemistry and Biotechnology, Faculty of Biosciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Hafiz M N Iqbal
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, 64849, Monterrey, NL, Mexico
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20
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Zubair M, Wang S, Ali N. Advanced Approaches to Breast Cancer Classification and Diagnosis. Front Pharmacol 2021; 11:632079. [PMID: 33716731 PMCID: PMC7952319 DOI: 10.3389/fphar.2020.632079] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022] Open
Abstract
The International Agency for Research on Cancer (IARC) has recently reported a 66% increase in the global number of cancer deaths since 1960. In the US alone, about one in eight women is expected to develop invasive breast cancer(s) (breast cancer) at some point in their lifetime. Traditionally, a BC diagnosis includes mammography, ultrasound, and some high-end molecular bioimaging. Unfortunately, these techniques detect BC at a later stage. So early and advanced molecular diagnostic tools are still in demand. In the past decade, various histological and immuno-molecular studies have demonstrated that BC is highly heterogeneous in nature. Its growth pattern, cytological features, and expression of key biomarkers in BC cells including hormonal receptor markers can be utilized to develop advanced diagnostic and therapeutic tools. A cancer cell's progression to malignancy exhibits various vital biomarkers, many of which are still underrepresented in BC diagnosis and treatment. Advances in genetics have also enabled the development of multigene assays to detect genetic heterogeneity in BC. However, thus far, the FDA has approved only four such biomarkers-cancer antigens (CA); CA 15-3, CA 27-29, Human epidermal growth factor receptor 2 (HER2), and circulating tumor cells (CTC) in assessing BC in body fluids. An adequately structured portable-biosensor with its non-invasive and inexpensive point-of-care analysis can quickly detect such biomarkers without significantly compromising its specificity and selectivity. Such advanced techniques are likely to discriminate between BC and a healthy patient by accurately measuring the cell shape, structure, depth, intracellular and extracellular environment, and lipid membrane compositions. Presently, BC treatments include surgery and systemic chemo- and targeted radiation therapy. A biopsied sample is then subjected to various multigene assays to predict the heterogeneity and recurrence score, thus guiding a specific treatment by providing complete information on the BC subtype involved. Thus far, we have seven prognostic multigene signature tests for BC providing a risk profile that can avoid unnecessary treatments in low-risk patients. Many comparative studies on multigene analysis projected the importance of integrating clinicopathological information with genomic-imprint analysis. Current cohort studies such as MINDACT, TAILORx, Trans-aTTOM, and many more, are likely to provide positive impact on long-term patient outcome. This review offers consolidated information on currently available BC diagnosis and treatment options. It further describes advanced biomarkers for the development of state-of-the-art early screening and diagnostic technologies.
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Affiliation(s)
- M. Zubair
- Department of Biology, University of Arkansas at Little Rock, Little Rock, AR, United States
| | - S. Wang
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, AR, United States
| | - N. Ali
- Department of Biology, University of Arkansas at Little Rock, Little Rock, AR, United States
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21
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Kumutima J, Yao XQ, Hamelberg D. p53 Is Potentially Regulated by Cyclophilin D in the Triple-Proline Loop of the DNA Binding Domain. Biochemistry 2021; 60:597-606. [PMID: 33591178 DOI: 10.1021/acs.biochem.0c00946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The multifunctional protein p53 is the central molecular sensor of cellular stresses. The canonical function of p53 is to transcriptionally activate target genes in response to, for example, DNA damage that may trigger apoptosis. Recently, p53 was also found to play a role in the regulation of necrosis, another type of cell death featured by the mitochondrial permeability transition (mPT). In this process, p53 directly interacts with the mPT regulator cyclophilin D, the detailed mechanism of which however remains poorly understood. Here, we report a comprehensive computational investigation of the p53-cyclophilin D interaction using molecular dynamics simulations and associated analyses. We have identified the specific cyclophilin D binding site on p53 that is located at proline 151 in the DNA binding domain. As a peptidyl-prolyl isomerase, cyclophilin D binds p53 and catalyzes the cis-trans isomerization of the peptide bond preceding proline 151. We have also characterized the effect of such an isomerization and found that the p53 domain in the cis state is overall more rigid than the trans state except for the local region around proline 151. Dynamical changes upon isomerization occur in both local and distal regions, indicating an allosteric effect elicited by the isomerization. We present potential allosteric communication pathways between proline 151 and distal sites, including the DNA binding surface. Our work provides, for the first time, a model for how cyclophilin D binds p53 and regulates its activity by switching the configuration of a specific site.
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22
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Gamini R, Nakashima R, He W, Zhang C, Huang Y, Zhang Y, Zhang B, Zhao S. QuickIsoSeq for Isoform Quantification in Large-Scale RNA Sequencing. Methods Mol Biol 2021; 2284:135-145. [PMID: 33835441 DOI: 10.1007/978-1-0716-1307-8_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
RNA-sequencing (RNA-seq) is a powerful technology for transcriptome profiling. While most RNA-seq projects focus on gene-level quantification and analysis, there is growing evidence that most mammalian genes are alternatively spliced to generate different isoforms that can be subsequently translated to protein molecules with diverse or even opposing biological functions. Quantifying the expression levels of these isoforms is key to understanding the genes biological functions in healthy tissues and the progression of diseases. Among open source tools developed for isoform quantification, Salmon, Kallisto, and RSEM are recommended based upon previous systematic evaluation of these tools using both experimental and simulated RNA-seq datasets. However, isoform quantification in practical RNA-seq data analysis needs to deal with many QC issues, such as the abundance of rRNAs in mRNA-seq, the efficiency of globin RNA depletion in whole blood samples, and potential sample swapping. To overcome these practical challenges, QuickIsoSeq was developed for large-scale RNA-seq isoform quantification along with QC. In this chapter, we describe the pipeline and detailed the steps required to deploy and use it to analyze RNA-seq datasets in practice. The QuickIsoSeq package can be downloaded from https://github.com/shanrongzhao/QuickIsoSeq.
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Affiliation(s)
- Ramya Gamini
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Reiko Nakashima
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Wen He
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Chi Zhang
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Ying Huang
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Ying Zhang
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Baohong Zhang
- Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Shanrong Zhao
- Pfizer Worldwide Research and Development, Cambridge, MA, USA.
- AbSci Inc, Vancouver, WA, USA.
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23
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Predictive Markers for Malignant Urothelial Transformation in Balkan Endemic Nephropathy: A Case-Control Study. Cancers (Basel) 2020; 12:cancers12102945. [PMID: 33065960 PMCID: PMC7599787 DOI: 10.3390/cancers12102945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/17/2020] [Accepted: 09/25/2020] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Balkan endemic nephropathy (BEN) is chronic kidney disease caused by intoxication with Aristolochia plant. Apart from subtle decline of renal function that eventually results in kidney failure, the patients are at increased risk for urothelial carcinoma (UC) development. Based on the observed UC markers, the aim of this study was to examine urinary and plasma levels of some these markers in BEN patients without carcinoma, in order to potentially identify those with predictive value. Our study revealed either plasma or urinary survivin levels as a potential predictors of future malignant transformation of urothelium. Abstract Balkan endemic nephropathy (BEN) is a chronic tubulointerstitial disease frequently accompanied by urothelial carcinoma (UC). In light of the increased UC incidence and the markers observed in BEN patients with developed UC, the aim of the current case–control study is to assess survivin, p53 protein, growth factors and receptors (VEGF, VEGFR1, IGF I, IGF-1R and IGFBP5), tumor marker (TF)/CD142, circulating soluble Fas receptor and neopterin, as potentially predictive markers for UC in patients with BEN (52 patients), compared to healthy, age-matched subjects (40). A threefold increase was registered in both circulating and urinary survivin level in BEN patients. Especially noticeable was the ratio of U survivin/U Cr level five times the ratio of BEN patients associated with standard renal markers in multivariate regression models. The concentrations of VEGF, VEGFR1, (TF)/CD142, (sFas) were not significantly different in BEN patients, while urinary/plasma level demonstrated a significant decrease for VEGF. The levels of IGF I, IGFBP5 and IGF-1R were significantly reduced in the urine of BEN patients. Plasma concentration of neopterin was significantly higher, while urinary neopterin value was significantly lower in BEN patients compared to healthy controls, which reflected a significantly lower urine/plasma ratio and low local predictive value. As BEN is a slow-progressing chronic kidney disease, early detection of survivin may be proposed as potential predictor for malignant alteration and screening tool in BEN patients without the diagnosis of UC.
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Jin Y, Li R, Zhang Z, Ren J, Song X, Zhang G. ZBED1/DREF: A transcription factor that regulates cell proliferation. Oncol Lett 2020; 20:137. [PMID: 32934705 PMCID: PMC7471704 DOI: 10.3892/ol.2020.11997] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 07/07/2020] [Indexed: 01/24/2023] Open
Abstract
Maintenance of genomic diversity is critically dependent on gene regulation at the transcriptional level. This occurs via the interaction of regulatory DNA sequence motifs with DNA-binding transcription factors. The zinc finger, BED-type (ZBED) gene family contains major DNA-binding motifs present in human transcriptional factors. It encodes proteins that present markedly diverse regulatory functions. ZBED1 has similar structural and functional properties to its Drosophila homolog DNA replication-related element-binding factor (DREF) and plays a critical role in the regulation of transcription. ZBED1 regulates the expression of several genes associated with cell proliferation, including cell cycle regulation, chromatin remodeling and protein metabolism, and some genes associated with apoptosis and differentiation. In the present review, the origin, structure and functional role of ZBED1 were comprehensively assessed. In addition, the similarities and differences between ZBED1 and its Drosophila homolog DREF were highlighted, and future research directions, particularly in the area of clinical cancer, were discussed.
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Affiliation(s)
- Yarong Jin
- Department of Radiotherapy, People's Hospital of Shanxi Province, Taiyuan, Shanxi 030012, P.R. China.,Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan 650118, P.R. China
| | - Ruilei Li
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan 650118, P.R. China
| | - Zhiwei Zhang
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan 650118, P.R. China.,Department of Oncology, Affiliated Hospital of Hebei University of Engineering, Handan, Hebei 056002, P.R. China
| | - Jinjin Ren
- Department of Radiotherapy, People's Hospital of Shanxi Province, Taiyuan, Shanxi 030012, P.R. China
| | - Xin Song
- Department of Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan 650118, P.R. China
| | - Gong Zhang
- Department of Radiotherapy, People's Hospital of Shanxi Province, Taiyuan, Shanxi 030012, P.R. China
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25
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Xu F, Ji Z, He L, Chen M, Chen H, Feng Q, Dong B, Yang X, Jiang L, Jin R. Downregulation of LINC01021 by curcumin analog Da0324 inhibits gastric cancer progression through activation of P53. Am J Transl Res 2020; 12:3429-3444. [PMID: 32774710 PMCID: PMC7407729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
Curcumin is a safe, cost-effective natural agent with multiple targets that displays therapeutic potential in cancer. Recently, we reported a novel curcumin analog, Da0324, which exhibited significantly improved stability and anti-cancer activity. However, the molecular mechanism underlying the anti-cancer activity of Da0324 remains largely unknown. Long non-coding RNAs have been shown to play important roles in cancer development and progression and may be potential targets for cancer therapy. Here, we showed that Da0324 treatment down-regulated the expression of LINC01021 in gastric cancer cells. Da0324 treatment or knockdown of LINC01021 by antisense oligos significantly inhibited gastric cancer cell growth, and also up-regulated P53 expression and down-regulated Bcl-2 expression in vitro and in vivo. Furthermore, Da0324 treatment or knockdown of LINC01021 in gastric cancer cells suppressed cell migration, invasion and epithelial-mesenchymal transition (EMT), as well as induced apoptosis and autophagy. In addition, overexpression of LINC01021 promoted growth and EMT, inhibited P53 expression and increased Bcl-2 expression in gastric cancer cells. Finally, overexpression of LINC01021 reversed the anti-cancer effect of Da0324. Our findings indicate a novel anti-cancer mechanism for Da0324, and that LINC01021 might be a potential therapeutic target for the treatment of gastric cancer.
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Affiliation(s)
- Fanfan Xu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Ziwei Ji
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Leye He
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Mengxia Chen
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Hao Chen
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Qian Feng
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Buyuan Dong
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Xingyi Yang
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Lei Jiang
- Central Laboratory, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
| | - Rong Jin
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
- Department of Epidemiology, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000, China
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26
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Li X, Lei Y, Yu Y, Zhang Y, Zhang W, Shen H, Tao C, Wu F, Huang S, Shao H. Discovery and characterization of a novel splice variant of the p53 tumor suppressor gene in a human T cell leukemia cellline. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2020; 13:1121-1135. [PMID: 32509087 PMCID: PMC7270667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Alternative splicing produces multiple mRNA variants of TP53 which have diverse biologic functions. In this study, we identified a novel splice variant of TP53 lacking a 200 nt portion of exon 4 (p53ΔE4p) from a human leukemia T cell line. No protein product of p53ΔE4p was identifiable by western blot; however, forced expression of the variant in HEK-293T cells expressing wild-type p53 could inhibit cell proliferation and promote cell death. Interestingly, this novel variant also significantly enhances the expression of reporter genes. Moreover, transcriptome analysis showed that genes related to DNA binding and regulation of transcription by RNA polymerase II function were significantly upregulated following p53ΔE4p transfection, suggesting a role for this variant in the regulation of gene expression.
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Affiliation(s)
- Xiaomei Li
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Yingshou Lei
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Yang Yu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Yaqian Zhang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Wenfeng Zhang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Han Shen
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Changli Tao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Fenglin Wu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
| | - Shulin Huang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
- Central Laboratory, Affiliated Dongguan People’s Hospital, Southern Medical UniversityDongguan, Guangdong Province, China
| | - Hongwei Shao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical UniversityGuangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory for Biotechnology Drug CandidateGuangzhou, Guangdong Province, China
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27
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Garg A, Hazra JP, Sannigrahi MK, Rakshit S, Sinha S. Variable Mutations at the p53-R273 Oncogenic Hotspot Position Leads to Altered Properties. Biophys J 2019; 118:720-728. [PMID: 31952808 DOI: 10.1016/j.bpj.2019.12.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/06/2019] [Accepted: 12/12/2019] [Indexed: 12/17/2022] Open
Abstract
Mutations in p53 protein, especially in the DNA-binding domain, is one of the major hallmarks of cancer. The R273 position is a DNA-contact position and has several oncogenic variants. Surprisingly, cancer patients carrying different mutant variants of R273 in p53 have different survival rates, indicating that the DNA-contact inhibition may not be the sole reason for reduced survival with R273 variants. Here, we probed the properties of three major oncogenic variants of the wild-type (WT) p53: [R273H]p53, [R273C]p53, and [R273L]p53. Using a series of biophysical, biochemical, and theoretical simulation studies, we observe that these oncogenic variants of the p53 not only suffer a loss in DNA binding, but they also show distinct structural stability, aggregation, and toxicity profiles. The WTp53 and the [R273H]p53 show the least destabilization and aggregation propensity. [R273C]p53 aggregation is disulfide mediated, leading to cross-β, thioflavin-T-positive aggregates, whereas hydrophobic interactions dominate self-assembly in [R273L]p53, leading to a mixture of amyloid and amorphous aggregates. Molecular dynamics simulations indicate different contact maps and secondary structures for the different variants along the course of the simulations. Our study indicates that each of the R273 variants has its own distinct property of stability and self-assembly, the molecular basis of which may lead to different types of cancer pathogenesis in vivo. These studies will aid the design of therapeutic strategies for cancer using residue-specific or process-specific protein aggregation as a target.
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Affiliation(s)
- Ankush Garg
- Institute of Nano Science and Technology, Habitat Centre, Punjab, India
| | - Jagadish Prasad Hazra
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Manauli, Punjab, India
| | - Malay Kumar Sannigrahi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Manauli, Punjab, India
| | - Sabyasachi Rakshit
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Manauli, Punjab, India.
| | - Sharmistha Sinha
- Institute of Nano Science and Technology, Habitat Centre, Punjab, India.
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28
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Zhang YX, Pan WY, Chen J. p53 and its isoforms in DNA double-stranded break repair. J Zhejiang Univ Sci B 2019; 20:457-466. [PMID: 31090271 DOI: 10.1631/jzus.b1900167] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
DNA double-stranded break (DSB) is one of the most catastrophic damages of genotoxic insult. Inappropriate repair of DNA DSBs results in the loss of genetic information, mutation, and the generation of harmful genomic rearrangements, which predisposes an organism to immunodeficiency, neurological damage, and cancer. The tumor repressor p53 plays a key role in DNA damage response, and has been found to be mutated in 50% of human cancer. p53, p63, and p73 are three members of the p53 gene family. Recent discoveries have shown that human p53 gene encodes at least 12 isoforms. Different p53 members and isoforms play various roles in orchestrating DNA damage response to maintain genomic integrity. This review briefly explores the functions of p53 and its isoforms in DNA DSB repair.
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Affiliation(s)
- Yu-Xi Zhang
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wen-Ya Pan
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jun Chen
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
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29
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Flesher JL, Paterson-Coleman EK, Vasudeva P, Ruiz-Vega R, Marshall M, Pearlman E, MacGregor GR, Neumann J, Ganesan AK. Delineating the role of MITF isoforms in pigmentation and tissue homeostasis. Pigment Cell Melanoma Res 2019; 33:279-292. [PMID: 31562697 DOI: 10.1111/pcmr.12828] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 01/01/2023]
Abstract
MITF, a gene that is mutated in familial melanoma and Waardenburg syndrome, encodes multiple isoforms expressed from alternative promoters that share common coding exons but have unique amino termini. It is not completely understood how these isoforms influence pigmentation in different tissues and how the expression of these independent isoforms of MITF is regulated. Here, we show that melanocytes express two isoforms of MITF, MITF-A and MITF-M. The expression of MITF-A is partially regulated by a newly identified retinoid enhancer element located upstream of the MITF-A promoter. Mitf-A knockout mice have only subtle changes in melanin accumulation in the hair and reduced Tyr expression in the eye. In contrast, Mitf-M-null mice have enlarged kidneys, lack neural crest-derived melanocytes in the skin, choroid, and iris stroma, yet maintain pigmentation within the retinal pigment epithelium and iris pigment epithelium of the eye. Taken together, these studies identify a critical role for MITF-M in melanocytes, a minor role for MITF-A in regulating pigmentation in the hair and Tyr expression in the eye, and a novel role for MITF-M in size control of the kidney.
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Affiliation(s)
- Jessica L Flesher
- Department of Biological Chemistry, University of California, Irvine, CA, USA.,Center for Cancer Systems Biology, University of California, Irvine, CA, USA
| | | | - Priya Vasudeva
- Department of Dermatology, University of California, Irvine, CA, USA
| | - Rolando Ruiz-Vega
- Center for Cancer Systems Biology, University of California, Irvine, CA, USA.,Department of Developmental and Cell Biology, University of California, Irvine, CA, USA.,Center for Complex Biological Systems, University of California, Irvine, CA, USA
| | - Michaela Marshall
- Department of Ophthalmology, University of California, Irvine, CA, USA
| | - Eric Pearlman
- Department of Ophthalmology, University of California, Irvine, CA, USA
| | - Grant R MacGregor
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA.,Irvine Transgenic Mouse Facility, University Laboratory Animal Resources, Office of Research, Universitiy of California, Irvine, CA, USA
| | - Jonathan Neumann
- Irvine Transgenic Mouse Facility, University Laboratory Animal Resources, Office of Research, Universitiy of California, Irvine, CA, USA
| | - Anand K Ganesan
- Department of Biological Chemistry, University of California, Irvine, CA, USA.,Center for Cancer Systems Biology, University of California, Irvine, CA, USA.,Department of Dermatology, University of California, Irvine, CA, USA
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30
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Rodríguez-Enríquez S, Marín-Hernández Á, Gallardo-Pérez JC, Pacheco-Velázquez SC, Belmont-Díaz JA, Robledo-Cadena DX, Vargas-Navarro JL, Corona de la Peña NA, Saavedra E, Moreno-Sánchez R. Transcriptional Regulation of Energy Metabolism in Cancer Cells. Cells 2019; 8:cells8101225. [PMID: 31600993 PMCID: PMC6830338 DOI: 10.3390/cells8101225] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/19/2019] [Accepted: 10/01/2019] [Indexed: 01/17/2023] Open
Abstract
Cancer development, growth, and metastasis are highly regulated by several transcription regulators (TRs), namely transcription factors, oncogenes, tumor-suppressor genes, and protein kinases. Although TR roles in these events have been well characterized, their functions in regulating other important cancer cell processes, such as metabolism, have not been systematically examined. In this review, we describe, analyze, and strive to reconstruct the regulatory networks of several TRs acting in the energy metabolism pathways, glycolysis (and its main branching reactions), and oxidative phosphorylation of nonmetastatic and metastatic cancer cells. Moreover, we propose which possible gene targets might allow these TRs to facilitate the modulation of each energy metabolism pathway, depending on the tumor microenvironment.
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Affiliation(s)
| | | | | | | | | | | | | | - Norma Angélica Corona de la Peña
- Unidad de Investigación Médica en Trombosis, Hemostasia y Aterogénesis, Hospital General Regional Carlos McGregor-Sánchez, México CP 03100, Mexico.
| | - Emma Saavedra
- Departamento de Bioquímica, Instituto Nacional de Cardiología, México 14080, Mexico.
| | - Rafael Moreno-Sánchez
- Departamento de Bioquímica, Instituto Nacional de Cardiología, México 14080, Mexico.
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31
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Naryzhny SN, Legina OK. [Structural-functional diversity of p53 proteoforms]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2019; 65:263-276. [PMID: 31436168 DOI: 10.18097/pbmc20196504263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Protein p53 is one of the most studied proteins. This attention is primarily due to its key role in the cellular mechanisms associated with carcinogenesis. Protein p53 is a transcription factor involved in a wide variety of processes: cell cycle regulation and apoptosis, signaling inside the cell, DNA repair, coordination of metabolic processes, regulation of cell interactions, etc. This multifunctionality is apparently determined by the fact that p53 is a vivid example of how the same protein can be represented by numerous proteoforms bearing completely different functional loads. By alternative splicing, using different promoters and translation initiation sites, the TP53 gene gives rise to at least 12 isoforms, which can additionally undergo numerous (>200) post-translational modifications. Proteoforms generated due to numerous point mutations in the TP53 gene are adding more complexity to this picture. The proteoforms produced are involved in various processes, such as the regulation of p53 transcriptional activity in response to various factors. This review is devoted to the description of the currently known p53 proteoforms, as well as their possible functionality.
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Affiliation(s)
- S N Naryzhny
- Petersburg Nuclear Physics Institute NRC Kurchatov Institute, Leningrad region, Gatchina, Russia
| | - O K Legina
- Petersburg Nuclear Physics Institute NRC Kurchatov Institute, Leningrad region, Gatchina, Russia
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32
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Abstract
Nuclear proteins participate in diverse cellular processes, many of which are essential for cell survival and viability. To maintain optimal nuclear physiology, the cell employs the ubiquitin-proteasome system to eliminate damaged and misfolded proteins in the nucleus that could otherwise harm the cell. In this review, we highlight the current knowledge about the major ubiquitin-protein ligases involved in protein quality control degradation (PQCD) in the nucleus and how they orchestrate their functions to eliminate misfolded proteins in different nuclear subcompartments. Many human disorders are causally linked to protein misfolding in the nucleus, hence we discuss major concepts that still need to be clarified to better understand the basis of the nuclear misfolded proteins' toxic effects. Additionally, we touch upon potential strategies for manipulating nuclear PQCD pathways to ameliorate diseases associated with protein misfolding and aggregation in the nucleus.
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Affiliation(s)
- Charisma Enam
- Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA; ,
| | - Yifat Geffen
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem 91904, Israel; ,
| | - Tommer Ravid
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem 91904, Israel; ,
| | - Richard G Gardner
- Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA; ,
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33
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Hassan FU, Rehman MSU, Khan MS, Ali MA, Javed A, Nawaz A, Yang C. Curcumin as an Alternative Epigenetic Modulator: Mechanism of Action and Potential Effects. Front Genet 2019; 10:514. [PMID: 31214247 PMCID: PMC6557992 DOI: 10.3389/fgene.2019.00514] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 05/10/2019] [Indexed: 12/21/2022] Open
Abstract
Curcumin (a polyphenolic compound in turmeric) is famous for its potent anti-inflammatory, anti-oxidant, and anti-cancer properties, and has a great potential to act as an epigenetic modulator. The epigenetic regulatory roles of curcumin include the inhibition of DNA methyltransferases (DNMTs), regulation of histone modifications via the regulation of histone acetyltransferases (HATs) and histone deacetylases (HDACs), regulation of microRNAs (miRNA), action as a DNA binding agent and interaction with transcription factors. These mechanisms are interconnected and play a vital role in tumor progression. The recent research has demonstrated the role of epigenetic inactivation of pivotal genes that regulate human pathologies such as cancers. Epigenetics helps to understand the mechanism of chemoprevention of cancer through different therapeutic agents. In this regard, dietary phytochemicals, such as curcumin, have emerged as a potential source to reverse epigenetic modifications and efficiently regulate the expression of genes and molecular targets that are involved in the promotion of tumorigenesis. The curcumin may also act as an epigenetic regulator in neurological disorders, inflammation, and diabetes. Moreover, curcumin can induce the modifications of histones (acetylation/deacetylation), which are among the most important epigenetic changes responsible for altered expression of genes leading to modulating the risks of cancers. Curcumin is an effective medicinal agent, as it regulates several important molecular signaling pathways that modulate survival, govern anti-oxidative properties like nuclear factor E2-related factor 2 (Nrf2) and inflammation pathways, e.g., nuclear factor kappa B (NF-κB). Curcumin is a potent proteasome inhibitor that increases p-53 level and induces apoptosis through caspase activation. Moreover, the disruption of 26S proteasome activity induced by curcumin through inhibiting DYRK2 in different cancerous cells resulting in the inhibition of cell proliferation opens up a new horizon for using curcumin as a potential preventive and treatment approach in proteasome-linked cancers. This review presents a brief summary of knowledge about the mechanism of epigenetic changes induced by curcumin and the potential effects of curcumin such as anti-oxidant activity, enhancement of wound healing, modulation of angiogenesis and its interaction with inflammatory cytokines. The development of curcumin as a clinical molecule for successful chemo-prevention and alternate therapeutic approach needs further mechanistic insights.
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Affiliation(s)
- Faiz-Ul Hassan
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, China.,Institute of Animal and Dairy Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Saif-Ur Rehman
- Institute of Animal and Dairy Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Sajjad Khan
- Institute of Animal and Dairy Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Amjad Ali
- Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Aroosa Javed
- Department of Zoology, Wildlife and Fisheries, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ayesha Nawaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Chengjian Yang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, China
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34
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Zureick AH, McFadden KA, Mody R, Koschmann C. Successful treatment of a TSC2-mutant glioblastoma with everolimus. BMJ Case Rep 2019; 12:12/5/e227734. [PMID: 31154346 DOI: 10.1136/bcr-2018-227734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A 14-year-old boy with familial Li-Fraumeni syndrome presented with diplopia. Brain MRI revealed a right temporoparietal rim-enhancing mass. Following surgical resection and diagnosis of a gigantocellular-type glioblastoma multiforme (GBM), his family wished to avoid cytotoxic chemotherapy given the amplified risk of secondary malignancy. As such, we performed whole exome and transcriptome sequencing, which revealed germline TP53 and somatic TSC2 mutations. On completion of adjuvant radiotherapy, he was started on maintenance therapy with everolimus per recommendations from our multi-institutional brain tumour precision medicine tumour board. He has achieved a complete remission with resolution of visual symptoms and remains on everolimus therapy with concurrent electromagnetic field therapy, now 33 months from diagnosis. Our data highlight the benefit of precision medicine in children with GBM and offer insight into a targetable pathway that may be involved in similar cases.
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Affiliation(s)
- Andrew H Zureick
- University of Michigan Medical School, Michigan Medicine, Ann Arbor, Michigan, USA.,Department of Radiation Oncology, Beaumont Health System, Royal Oak, Michigan, USA
| | | | - Rajen Mody
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Carl Koschmann
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Michigan Medicine, Ann Arbor, Michigan, USA
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35
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Melo Dos Santos N, de Oliveira GAP, Ramos Rocha M, Pedrote MM, Diniz da Silva Ferretti G, Pereira Rangel L, Morgado-Diaz JA, Silva JL, Rodrigues Pereira Gimba E. Loss of the p53 transactivation domain results in high amyloid aggregation of the Δ40p53 isoform in endometrial carcinoma cells. J Biol Chem 2019; 294:9430-9439. [PMID: 31028175 PMCID: PMC6579457 DOI: 10.1074/jbc.ra119.007566] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/17/2019] [Indexed: 01/18/2023] Open
Abstract
Dysfunctional p53 formation and activity can result from aberrant expression and subcellular localization of distinct p53 isoforms or aggregates. Endometrial carcinoma (EC) is a cancer type in which p53 status is correlated with prognosis, and TP53 mutations are a frequent genetic modification. Here we aimed to evaluate the expression patterns of different p53 isoforms and their contributions to the formation and subcellular localization of p53 amyloid aggregates in both EC and endometrial nontumor cell lines. We found that full-length (fl) p53 and a truncated p53 isoform, Δ40p53, resulting from alternative splicing of exon 2 or alternative initiation of translation at ATG-40, are the predominantly expressed p53 variants in EC cells. However, Δ40p53 was the major p53 isoform in endometrial nontumor cells. Immunofluorescence assays revealed that Δ40p53 is mainly localized to cytoplasmic punctate structures of EC cells, resembling solid-phase structures similar to those found in neurodegenerative pathologies. Using light-scattering kinetics, CD, and transmission EM, we noted that the p53 N-terminal transactivation domain significantly reduces aggregation of the WT p53 DNA-binding domain, confirming the higher aggregation tendency of Δ40p53, which lacks this domain. This is the first report of cytoplasmic Δ40p53 in EC cells being a major component of amyloid aggregates. The differential aggregation properties of p53 isoforms in EC cells may open up new avenues in the development of therapeutic strategies that preferentially target specific p53 isoforms to prevent p53 amyloid aggregate formation.
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Affiliation(s)
- Nataly Melo Dos Santos
- From the Instituto Nacional de Câncer, Coordenação de Pesquisa, Programa de Oncobiologia Celular e Molecular, Rio de Janeiro, Brazil.,the Universidade Federal Fluminense, Instituto de Humanidades e Saúde, Departamento de Ciências da Natureza, Rio de Janeiro 28895-532, Brazil, and
| | - Guilherme A P de Oliveira
- the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil.,the Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, Virginia 22908
| | - Murilo Ramos Rocha
- From the Instituto Nacional de Câncer, Coordenação de Pesquisa, Programa de Oncobiologia Celular e Molecular, Rio de Janeiro, Brazil
| | - Murilo M Pedrote
- the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil
| | - Giulia Diniz da Silva Ferretti
- the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil
| | - Luciana Pereira Rangel
- the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil.,the Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-170, Brazil
| | - José A Morgado-Diaz
- From the Instituto Nacional de Câncer, Coordenação de Pesquisa, Programa de Oncobiologia Celular e Molecular, Rio de Janeiro, Brazil
| | - Jerson L Silva
- the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil,
| | - Etel Rodrigues Pereira Gimba
- From the Instituto Nacional de Câncer, Coordenação de Pesquisa, Programa de Oncobiologia Celular e Molecular, Rio de Janeiro, Brazil, .,the Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941902, Brazil.,the Universidade Federal Fluminense, Instituto de Humanidades e Saúde, Departamento de Ciências da Natureza, Rio de Janeiro 28895-532, Brazil, and
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Chen Z, Boor PJ, Finnerty CC, Herndon DN, Albrecht T. Calpain-mediated cleavage of p53 in human cytomegalovirus-infected lung fibroblasts. FASEB Bioadv 2019; 1:151-166. [PMID: 32123827 PMCID: PMC6996331 DOI: 10.1096/fba.1028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 12/14/2022] Open
Abstract
Endogenous fragments of p53 protein were identified in human cytomegalovirus (HCMV)-infected human lung fibroblasts, particularly a 44-kDa N-terminal fragment [hereafter referred to as p53(ΔCp44)], generated via calpain cleavage. The fragment abundance increased in a biphasic manner, peaking at 6-9 hours and 48 hours post infection. Treatment of LU cells with calpain inhibitors eliminated most detectable p53 fragments. In cell-free experiments, exogenous m-calpain cleavage generated p53(ΔCp44). Attempts to preserve p53 proteins by treating cells with the calpain inhibitor E64d for 6 hours before harvesting increased the sensitivity of p53 to calpain cleavage. p53 in mock-infected cell lysates was much more sensitive to cleavage and degradation by exogenous calpain than that in HCMV-infected cells. The proteasome inhibitor MG132 stabilized p53(ΔCp44), particularly in mock-infected cells. p53(ΔCp44) appeared to be tightly associated with a chromatin-rich fraction. The abundance of p53β was unchanged over a 96-h time course and very similar in mock- and HCMV-infected cells, making it unlikely that p53(ΔCp44) was p53β. The biological activities of this and other fragments lacking C-terminal sequences are unknown, but deserve further investigation, given the association of p53(ΔCp44) with the chromatin-rich (or buffer C insoluble) fraction in HCMV-infected cells.
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Affiliation(s)
- Zhenping Chen
- Department of Microbiology and ImmunologyUniversity of Texas Medical BranchGalvestonTexas
- Department of PathologyUniversity of Texas Medical BranchGalvestonTexas
- Department of SurgeryUniversity of Texas Medical BranchGalvestonTexas
| | - Paul J. Boor
- Department of PathologyUniversity of Texas Medical BranchGalvestonTexas
- Shriners Hospitals for Children—GalvestonGalvestonTexas
| | - Celeste C. Finnerty
- Department of SurgeryUniversity of Texas Medical BranchGalvestonTexas
- Shriners Hospitals for Children—GalvestonGalvestonTexas
| | - David N. Herndon
- Department of SurgeryUniversity of Texas Medical BranchGalvestonTexas
- Shriners Hospitals for Children—GalvestonGalvestonTexas
| | - Thomas Albrecht
- Department of Microbiology and ImmunologyUniversity of Texas Medical BranchGalvestonTexas
- Infectious Disease and Toxicology Optical Imaging CoreUniversity of Texas Medical BranchGalvestonTexas
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Lei J, Qi R, Tang Y, Wang W, Wei G, Nussinov R, Ma B. Conformational stability and dynamics of the cancer-associated isoform Δ133p53β are modulated by p53 peptides and p53-specific DNA. FASEB J 2019; 33:4225-4235. [PMID: 30540922 PMCID: PMC6404584 DOI: 10.1096/fj.201801973r] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/12/2018] [Indexed: 01/01/2023]
Abstract
p53 is a tumor suppressor protein that maintains genome stability, but its Δ133p53β and Δ160p53β isoforms promote breast cancer cell invasion. The sequence truncations in the p53 core domain raise key questions related to their physicochemical properties, including structural stabilities, interaction mechanisms, and DNA-binding abilities. Herein, we investigated the conformational dynamics of Δ133p53β and Δ160p53β with and without binding to p53-specific DNA by using molecular dynamics simulations. We observed that the core domains of the 2 truncated isoforms are much less stable than wild-type (wt) p53β, and the increased solvent exposure of their aggregation-triggering segment indicates their higher aggregation propensities than wt p53. We also found that Δ133p53β stability is modulable by peptide or DNA interactions. Adding a p53 peptide (derived from truncated p53 sequence 107-129) may help stabilize Δ133p53. Most importantly, our simulations of p53 isomer-DNA complexes indicate that Δ133p53β dimer, but not Δ160p53β dimer, could form a stable complex with p53-specific DNA, which is consistent with recent experiments. This study provides physicochemical insight into Δ133p53β, Δ133p53β-DNA complexes, Δ133p53β's pathologic mechanism, and peptide-based inhibitor design against p53-related cancers.-Lei, J., Qi, R., Tang, Y., Wang, W., Wei, G., Nussinov, R., Ma, B. Conformational stability and dynamics of the cancer-associated isoform Δ133p53β are modulated by p53 peptides and p53-specific DNA.
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Affiliation(s)
- Jiangtao Lei
- State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences–Ministry of Education, Department of Physics, Fudan University, Shanghai, China
| | - Ruxi Qi
- State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences–Ministry of Education, Department of Physics, Fudan University, Shanghai, China
| | - Yegen Tang
- Department of Chemistry, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Wenning Wang
- Department of Chemistry, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Guanghong Wei
- State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences–Ministry of Education, Department of Physics, Fudan University, Shanghai, China
| | - Ruth Nussinov
- Basic Science Program, Leidos Biomedical Research, Inc., Cancer and Inflammation Program, National Cancer Institute, Frederick, Maryland, USA; and
- Department of Human Genetics and Molecular Medicine, Sackler Institute of Molecular Medicine, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Buyong Ma
- Basic Science Program, Leidos Biomedical Research, Inc., Cancer and Inflammation Program, National Cancer Institute, Frederick, Maryland, USA; and
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38
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Talib WH, Al-Hadid SA, Ali MBW, Al-Yasari IH, Ali MRA. Role of curcumin in regulating p53 in breast cancer: an overview of the mechanism of action. BREAST CANCER (DOVE MEDICAL PRESS) 2018; 10:207-217. [PMID: 30568488 PMCID: PMC6276637 DOI: 10.2147/bctt.s167812] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
p53 is a tumor suppressor gene involved in various cellular mechanisms including DNA repair, apoptosis, and cell cycle arrest. More than 50% of human cancers have a mutated nonfunctional p53. Breast cancer (BC) is one of the main causes of cancer-related deaths among females. p53 mutations in BC are associated with low survival rates and more resistance to the conventional therapies. Thus, targeting p53 activity was suggested as an important strategy in cancer therapy. During the past decades, cancer research was focused on the development of monotargeted anticancer therapies. However, the development of drug resistance by modulation of genes, proteins, and pathways was the main hindrance to the success of such therapies. Curcumin is a natural product, extracted from the roots of Curcuma longa, and possesses various biological effects including anticancer activity. Previous studies proved the ability of curcumin to modulate several signaling pathways and biomolecules in cancer. Safety and cost-effectiveness are additional inevitable advantages of curcumin. This review summarizes the effects of curcumin as a regulator of p53 in BC and the key molecular mechanisms of this regulation.
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Affiliation(s)
- Wamidh H Talib
- Department of Clinical Pharmacy and Therapeutics, Applied Science Private University, Amman, Jordan,
| | - Sonia A Al-Hadid
- Department of Clinical Pharmacy and Therapeutics, Applied Science Private University, Amman, Jordan,
| | - Mai B Wild Ali
- Department of Clinical Pharmacy and Therapeutics, Applied Science Private University, Amman, Jordan,
| | - Intisar Hadi Al-Yasari
- Food Technology Department, Faculty of Food Science, AL-Qasim Green University, Babylon, Iraq
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p53 Isoforms and Their Implications in Cancer. Cancers (Basel) 2018; 10:cancers10090288. [PMID: 30149602 PMCID: PMC6162399 DOI: 10.3390/cancers10090288] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/18/2018] [Accepted: 08/18/2018] [Indexed: 01/10/2023] Open
Abstract
In this review we focus on the major isoforms of the tumor-suppressor protein p53, dysfunction of which often leads to cancer. Mutations of the TP53 gene, particularly in the DNA binding domain, have been regarded as the main cause for p53 inactivation. However, recent reports demonstrating abundance of p53 isoforms, especially the N-terminally truncated ones, in the cancerous tissues suggest their involvement in carcinogenesis. These isoforms are ∆40p53, ∆133p53, and ∆160p53 (the names indicate their respective N-terminal truncation). Due to the lack of structural and functional characterizations the modes of action of the p53 isoforms are still unclear. Owing to the deletions in the functional domains, these isoforms can either be defective in DNA binding or more susceptive to altered ‘responsive elements’ than p53. Furthermore, they may exert a ‘dominant negative effect’ or induce more aggressive cancer by the ‘gain of function’. One possible mechanism of p53 inactivation can be through tetramerization with the ∆133p53 and ∆160p53 isoforms—both lacking part of the DNA binding domain. A recent report and unpublished data from our laboratory also suggest that these isoforms may inactivate p53 by fast aggregation—possibly due to ectopic overexpression. We further discuss the evolutionary significance of the p53 isoforms.
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40
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Adiutori R, Aarum J, Zubiri I, Bremang M, Jung S, Sheer D, Pike I, Malaspina A. The proteome of neurofilament-containing protein aggregates in blood. Biochem Biophys Rep 2018; 14:168-177. [PMID: 29872749 PMCID: PMC5986704 DOI: 10.1016/j.bbrep.2018.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/15/2018] [Accepted: 04/26/2018] [Indexed: 11/24/2022] Open
Abstract
Protein aggregation in biofluids is a poorly understood phenomenon. Under normal physiological conditions, fluid-borne aggregates may contain plasma or cell proteins prone to aggregation. Recent observations suggest that neurofilaments (Nf), the building blocks of neurons and a biomarker of neurodegeneration, are included in high molecular weight complexes in circulation. The composition of these Nf-containing hetero-aggregates (NCH) may change in systemic or organ-specific pathologies, providing the basis to develop novel disease biomarkers. We have tested ultracentrifugation (UC) and a commercially available protein aggregate binder, Seprion PAD-Beads (SEP), for the enrichment of NCH from plasma of healthy individuals, and then characterised the Nf content of the aggregate fractions using gel electrophoresis and their proteome by mass spectrometry (MS). Western blot analysis of fractions obtained by UC showed that among Nf isoforms, neurofilament heavy chain (NfH) was found within SDS-stable high molecular weight aggregates. Shotgun proteomics of aggregates obtained with both extraction techniques identified mostly cell structural and to a lesser extent extra-cellular matrix proteins, while functional analysis revealed pathways involved in inflammatory response, phagosome and prion-like protein behaviour. UC aggregates were specifically enriched with proteins involved in endocrine, metabolic and cell-signalling regulation. We describe the proteome of neurofilament-containing aggregates isolated from healthy individuals biofluids using different extraction methods.
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Affiliation(s)
- Rocco Adiutori
- Centre for Neuroscience and Trauma, Queen Mary University of London, Blizard Institute, Barts and The School of Medicine and Dentistry, London, United Kingdom
| | - Johan Aarum
- Centre for Genomics and Child Health, Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry, London, United Kingdom
| | - Irene Zubiri
- Centre for Neuroscience and Trauma, Queen Mary University of London, Blizard Institute, Barts and The School of Medicine and Dentistry, London, United Kingdom
| | - Michael Bremang
- Proteome Sciences Plc, Hamilton House, Mabledon Place, London, United Kingdom
| | - Stephan Jung
- ProteomeSciencesR&DGmbH&Co.KG, Frankfurt, Germany
| | - Denise Sheer
- Centre for Genomics and Child Health, Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry, London, United Kingdom
| | - Ian Pike
- Proteome Sciences Plc, Hamilton House, Mabledon Place, London, United Kingdom
| | - Andrea Malaspina
- Centre for Neuroscience and Trauma, Queen Mary University of London, Blizard Institute, Barts and The School of Medicine and Dentistry, London, United Kingdom
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Coury JR, Davis BN, Koumas CP, Manzano GS, Dehdashti AR. Histopathological and molecular predictors of growth patterns and recurrence in craniopharyngiomas: a systematic review. Neurosurg Rev 2018; 43:41-48. [DOI: 10.1007/s10143-018-0978-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 04/02/2018] [Accepted: 04/09/2018] [Indexed: 01/01/2023]
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p73 coordinates with Δ133p53 to promote DNA double-strand break repair. Cell Death Differ 2018; 25:1063-1079. [PMID: 29511339 PMCID: PMC5988805 DOI: 10.1038/s41418-018-0085-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 01/18/2018] [Accepted: 02/07/2018] [Indexed: 12/16/2022] Open
Abstract
Tumour repressor p53 isoform Δ133p53 is a target gene of p53 and an antagonist of p53-mediated apoptotic activity. We recently demonstrated that Δ133p53 promotes DNA double-strand break (DSB) repair by upregulating transcription of the repair genes RAD51, LIG4 and RAD52 in a p53-independent manner. However, Δ133p53 lacks the transactivation domain of full-length p53, and the mechanism by which it exerts transcriptional activity independently of full-length p53 remains unclear. In this report, we describe the accumulation of high levels of both Δ133p53 and p73 (a p53 family member) at 24 h post γ-irradiation (hpi). Δ133p53 can form a complex with p73 upon γ-irradiation. The co-expression of Δ133p53 and p73, but not either protein alone, can significantly promote DNA DSB repair mechanisms, including homologous recombination (HR), non-homologous end joining (NHEJ) and single-strand annealing (SSA). p73 and Δ133p53 act synergistically to promote the expression of RAD51, LIG4 and RAD52 by joining together to bind to region containing a Δ133p53-responsive element (RE) and a p73-RE in the promoters of all three repair genes. In addition to its accumulation at 24 hpi, p73 protein expression also peaks at 4 hpi. The depletion of p73 not only reduces early-stage apoptotic frequency (4–6 hpi), but also significantly increases later-stage DNA DSB accumulation (48 hpi), leading to cell cycle arrest in the G2 phase and, ultimately, cell senescence. In summary, the apoptotic regulator p73 also coordinates with Δ133p53 to promote DNA DSB repair, and the loss of function of p73 in DNA DSB repair may underlie spontaneous and carcinogen-induced tumorigenesis in p73 knockout mice.
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Yang C, Xie X, Tang H, Dong X, Zhang X, Huang F. Transcriptome analysis reveals GA induced apoptosis in HCT116 human colon cancer cells through calcium and p53 signal pathways. RSC Adv 2018; 8:12449-12458. [PMID: 35539409 PMCID: PMC9079613 DOI: 10.1039/c8ra00260f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/20/2018] [Indexed: 01/22/2023] Open
Abstract
Gallic acid (GA) is a polyphenol widely found in numerous fruits and vegetables that has been reported to exert anticancer effects, including apoptosis, against cancer cell lines. However, little is known about the induction of apoptotic effects and the underlying mechanism. We used RNA-seq to examine differentially expressed genes in human colon cancer HCT116 cells after 12 h and 24 h exposure to GA. A total of 792 and 911 genes with known functions showed significantly different expression levels in 12 h and 24 h GA-treated HCT116 cells, respectively. KEGG enrichment analysis showed that the identified genes were involved in pathways such as cholinergic synapse, circadian entrainment, calcium signal processing and transport, arachidonic acid metabolism and the p53 signal pathway. Real-time quantitative PCR was used to validate the reliability of the results obtained by RNA-seq. The results of this study indicate that GA triggers apoptosis in HCT116 cells through obstructing the growth of cells in the early phase treatment by down-regulation of calcium channels and then up-regulation of the intrinsic p53 signal pathway through activation of apoptosis caspases, finally leading to the mitochondrial apoptosis pathway. Gallic acid (GA) is a polyphenol widely found in plants that induced apoptosis in human colon cancer cells through calcium and p53 signal pathways.![]()
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Affiliation(s)
- Chen Yang
- Oil Crops Research Institute
- Chinese Academy of Agricultural Sciences
- Wuhan 430062
- P. R. China
- Key Laboratory of Oilseeds Processing
| | - Xiaoyu Xie
- Department of Cell Biology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Hu Tang
- Oil Crops Research Institute
- Chinese Academy of Agricultural Sciences
- Wuhan 430062
- P. R. China
- Key Laboratory of Oilseeds Processing
| | - Xuyan Dong
- Oil Crops Research Institute
- Chinese Academy of Agricultural Sciences
- Wuhan 430062
- P. R. China
- Key Laboratory of Oilseeds Processing
| | - Xiaodong Zhang
- Department of Cell Biology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Fenghong Huang
- Oil Crops Research Institute
- Chinese Academy of Agricultural Sciences
- Wuhan 430062
- P. R. China
- Key Laboratory of Oilseeds Processing
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44
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Therapeutic Applications of Targeted Alternative Splicing to Cancer Treatment. Int J Mol Sci 2017; 19:ijms19010075. [PMID: 29283381 PMCID: PMC5796025 DOI: 10.3390/ijms19010075] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 12/22/2017] [Accepted: 12/24/2017] [Indexed: 12/16/2022] Open
Abstract
A growing body of studies has documented the pathological influence of impaired alternative splicing (AS) events on numerous diseases, including cancer. In addition, the generation of alternatively spliced isoforms is frequently noted to result in drug resistance in many cancer therapies. To gain comprehensive insights into the impacts of AS events on cancer biology and therapeutic developments, this paper highlights recent findings regarding the therapeutic routes of targeting alternative-spliced isoforms and splicing regulators to treatment strategies for distinct cancers.
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45
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Liu K, Chen W, Lei S, Xiong L, Zhao H, Liang D, Lei Z, Zhou N, Yao H, Liang Y. Wild-type and mutant p53 differentially modulate miR-124/iASPP feedback following pohotodynamic therapy in human colon cancer cell line. Cell Death Dis 2017; 8:e3096. [PMID: 29022915 PMCID: PMC5682646 DOI: 10.1038/cddis.2017.477] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/18/2017] [Accepted: 08/04/2017] [Indexed: 12/15/2022]
Abstract
Colorectal cancer (CRC) is a most common digestive system malignant tumor. p53 mutation has essential role in cancers and is frequently observed in CRC and presents a huge challenge. p53 mutation has been reported to attenuate the inhibitory effect of photofrin-based photodynamic therapy (PDT). p53 mutation-induced gain of function brings up the dysfunction of carcinogenic factors, including miRNAs. Our research found that PDT suppressed CRC cell viability, reduced the tumor size and prolonged the survival time, all of which could be attenuated by p53 mutation or deletion. After p53 mutation or deletion, several miRNA expression levels were downregulated, among which miR-124 was the most strongly downregulated, whereas iASPP expression was upregulated. p53 binds to the promoter of miR-124 to promote its expression and then inhibited iASPP expression, so as to amplify the inhibitory effect of PDT on wild-type p53 cells. In p53-mutant or -deleted cells, this binding no longer worked to promote miR-124 expression, and iASPP expression increased, finally resulted in promoted CRC cell viability upon PDT. The interactive modulation among miR and iASPP in p53-mutant or -deleted cells may serve as a crucial pathway, which mediates therapy resistance when p53 is mutated or deleted, in the process of PDT treatment of CRC.
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Affiliation(s)
- Kuijie Liu
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Weidong Chen
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Sanlin Lei
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Li Xiong
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hua Zhao
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Dong Liang
- The People's Hospital of Zhengzhou University (Henan Provincial People's Hospital), Zhengzhou 450003, China
| | - Zhendong Lei
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Nanjiang Zhou
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hongliang Yao
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Ying Liang
- Department of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
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46
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Zhang C, Zhang B, Lin LL, Zhao S. Evaluation and comparison of computational tools for RNA-seq isoform quantification. BMC Genomics 2017; 18:583. [PMID: 28784092 PMCID: PMC5547501 DOI: 10.1186/s12864-017-4002-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/01/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Alternatively spliced transcript isoforms are commonly observed in higher eukaryotes. The expression levels of these isoforms are key for understanding normal functions in healthy tissues and the progression of disease states. However, accurate quantification of expression at the transcript level is limited with current RNA-seq technologies because of, for example, limited read length and the cost of deep sequencing. RESULTS A large number of tools have been developed to tackle this problem, and we performed a comprehensive evaluation of these tools using both experimental and simulated RNA-seq datasets. We found that recently developed alignment-free tools are both fast and accurate. The accuracy of all methods was mainly influenced by the complexity of gene structures and caution must be taken when interpreting quantification results for short transcripts. Using TP53 gene simulation, we discovered that both sequencing depth and the relative abundance of different isoforms affect quantification accuracy CONCLUSIONS: Our comprehensive evaluation helps data analysts to make informed choice when selecting computational tools for isoform quantification.
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Affiliation(s)
- Chi Zhang
- Early Clinical Development, Pfizer Worldwide R&D, Cambridge, MA, 02139, USA
| | - Baohong Zhang
- Early Clinical Development, Pfizer Worldwide R&D, Cambridge, MA, 02139, USA
| | - Lih-Ling Lin
- Inflammation and Immunology RU, Pfizer Worldwide R&D, Cambridge, MA, 02139, USA
| | - Shanrong Zhao
- Early Clinical Development, Pfizer Worldwide R&D, Cambridge, MA, 02139, USA.
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47
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Kovachev PS, Banerjee D, Rangel LP, Eriksson J, Pedrote MM, Martins-Dinis MMDC, Edwards K, Cordeiro Y, Silva JL, Sanyal S. Distinct modulatory role of RNA in the aggregation of the tumor suppressor protein p53 core domain. J Biol Chem 2017; 292:9345-9357. [PMID: 28420731 DOI: 10.1074/jbc.m116.762096] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 04/12/2017] [Indexed: 01/05/2023] Open
Abstract
Inactivation of the tumor suppressor protein p53 by mutagenesis, chemical modification, protein-protein interaction, or aggregation has been associated with different human cancers. Although DNA is the typical substrate of p53, numerous studies have reported p53 interactions with RNA. Here, we have examined the effects of RNA of varied sequence, length, and origin on the mechanism of aggregation of the core domain of p53 (p53C) using light scattering, intrinsic fluorescence, transmission electron microscopy, thioflavin-T binding, seeding, and immunoblot assays. Our results are the first to demonstrate that RNA can modulate the aggregation of p53C and full-length p53. We found bimodal behavior of RNA in p53C aggregation. A low RNA:protein ratio (∼1:50) facilitates the accumulation of large amorphous aggregates of p53C. By contrast, at a high RNA:protein ratio (≥1:8), the amorphous aggregation of p53C is clearly suppressed. Instead, amyloid p53C oligomers are formed that can act as seeds nucleating de novo aggregation of p53C. We propose that structured RNAs prevent p53C aggregation through surface interaction and play a significant role in the regulation of the tumor suppressor protein.
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Affiliation(s)
- Petar Stefanov Kovachev
- From the Department of Cell and Molecular Biology, Uppsala University, Uppsala, Box-596, 75124, Sweden
| | - Debapriya Banerjee
- From the Department of Cell and Molecular Biology, Uppsala University, Uppsala, Box-596, 75124, Sweden
| | - Luciana Pereira Rangel
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Jonny Eriksson
- Department of Chemistry, Uppsala University, Uppsala, 75124, Sweden, and
| | - Murilo M Pedrote
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência Tecnologia de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Mafalda Maria D C Martins-Dinis
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência Tecnologia de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Katarina Edwards
- Department of Chemistry, Uppsala University, Uppsala, 75124, Sweden, and
| | - Yraima Cordeiro
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Jerson L Silva
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Ciência Tecnologia de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Suparna Sanyal
- From the Department of Cell and Molecular Biology, Uppsala University, Uppsala, Box-596, 75124, Sweden,
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Dasiram JD, Ganesan R, Kannan J, Kotteeswaran V, Sivalingam N. Curcumin inhibits growth potential by G1 cell cycle arrest and induces apoptosis in p53-mutated COLO 320DM human colon adenocarcinoma cells. Biomed Pharmacother 2017; 86:373-380. [DOI: 10.1016/j.biopha.2016.12.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/01/2016] [Accepted: 12/08/2016] [Indexed: 02/07/2023] Open
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Lin JC, Tsao MF, Lin YJ. Differential Impacts of Alternative Splicing Networks on Apoptosis. Int J Mol Sci 2016; 17:ijms17122097. [PMID: 27983653 PMCID: PMC5187897 DOI: 10.3390/ijms17122097] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/26/2016] [Accepted: 12/02/2016] [Indexed: 12/16/2022] Open
Abstract
Apoptosis functions as a common mechanism to eliminate unnecessary or damaged cells during cell renewal and tissue development in multicellular organisms. More than 200 proteins constitute complex networks involved in apoptotic regulation. Imbalanced expressions of apoptosis-related factors frequently lead to malignant diseases. The biological functions of several apoptotic factors are manipulated through alternative splicing mechanisms which expand gene diversity by generating discrete variants from one messenger RNA precursor. It is widely observed that alternatively-spliced variants encoded from apoptosis-related genes exhibit differential effects on apoptotic regulation. Alternative splicing events are meticulously regulated by the interplay between trans-splicing factors and cis-responsive elements surrounding the regulated exons. The major focus of this review is to highlight recent studies that illustrate the influences of alternative splicing networks on apoptotic regulation which participates in diverse cellular processes and diseases.
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Affiliation(s)
- Jung-Chun Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| | - Mei-Fen Tsao
- Department of Laboratory Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan.
| | - Ying-Ju Lin
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
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p53 Proteoforms and Intrinsic Disorder: An Illustration of the Protein Structure-Function Continuum Concept. Int J Mol Sci 2016; 17:ijms17111874. [PMID: 27834926 PMCID: PMC5133874 DOI: 10.3390/ijms17111874] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 10/27/2016] [Accepted: 11/03/2016] [Indexed: 01/10/2023] Open
Abstract
Although it is one of the most studied proteins, p53 continues to be an enigma. This protein has numerous biological functions, possesses intrinsically disordered regions crucial for its functionality, can form both homo-tetramers and isoform-based hetero-tetramers, and is able to interact with many binding partners. It contains numerous posttranslational modifications, has several isoforms generated by alternative splicing, alternative promoter usage or alternative initiation of translation, and is commonly mutated in different cancers. Therefore, p53 serves as an important illustration of the protein structure–function continuum concept, where the generation of multiple proteoforms by various mechanisms defines the ability of this protein to have a multitude of structurally and functionally different states. Considering p53 in the light of a proteoform-based structure–function continuum represents a non-canonical and conceptually new contemplation of structure, regulation, and functionality of this important protein.
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