1
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Lü Y, Cho T, Mukherjee S, Suarez CF, Gonzalez-Foutel NS, Malik A, Martinez S, Dervovic D, Oh RH, Langille E, Al-Zahrani KN, Hoeg L, Lin ZY, Tsai R, Mbamalu G, Rotter V, Ashton-Prolla P, Moffat J, Chemes LB, Gingras AC, Oren M, Durocher D, Schramek D. Genome-wide CRISPR screens identify novel regulators of wild-type and mutant p53 stability. Mol Syst Biol 2024; 20:719-740. [PMID: 38580884 PMCID: PMC11148184 DOI: 10.1038/s44320-024-00032-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 03/06/2024] [Accepted: 03/12/2024] [Indexed: 04/07/2024] Open
Abstract
Tumor suppressor p53 (TP53) is frequently mutated in cancer, often resulting not only in loss of its tumor-suppressive function but also acquisition of dominant-negative and even oncogenic gain-of-function traits. While wild-type p53 levels are tightly regulated, mutants are typically stabilized in tumors, which is crucial for their oncogenic properties. Here, we systematically profiled the factors that regulate protein stability of wild-type and mutant p53 using marker-based genome-wide CRISPR screens. Most regulators of wild-type p53 also regulate p53 mutants, except for p53 R337H regulators, which are largely private to this mutant. Mechanistically, FBXO42 emerged as a positive regulator for a subset of p53 mutants, working with CCDC6 to control USP28-mediated mutant p53 stabilization. Additionally, C16orf72/HAPSTR1 negatively regulates both wild-type p53 and all tested mutants. C16orf72/HAPSTR1 is commonly amplified in breast cancer, and its overexpression reduces p53 levels in mouse mammary epithelium leading to accelerated breast cancer. This study offers a network perspective on p53 stability regulation, potentially guiding strategies to reinforce wild-type p53 or target mutant p53 in cancer.
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Affiliation(s)
- YiQing Lü
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
- Department of Biology, Suffolk University, Boston, MA, 02108, USA
| | - Tiffany Cho
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Saptaparna Mukherjee
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Carmen Florencia Suarez
- Instituto de Investigaciones Biotecnológicas (IIBiO-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Nicolas S Gonzalez-Foutel
- Instituto de Investigaciones Biotecnológicas (IIBiO-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Ahmad Malik
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Sebastien Martinez
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Dzana Dervovic
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Robin Hyunseo Oh
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Ellen Langille
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Khalid N Al-Zahrani
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Lisa Hoeg
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Zhen Yuan Lin
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Ricky Tsai
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Geraldine Mbamalu
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
| | - Varda Rotter
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Patricia Ashton-Prolla
- Departamento de Genética, Universidade Federal do Rio Grande do Sul and Serviço de Genetica Médica HCPA, Porto Alegre, Brasil
| | - Jason Moffat
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, M5S3G9, Canada
- Genetics and Genome Biology Program, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Lucia Beatriz Chemes
- Instituto de Investigaciones Biotecnológicas (IIBiO-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Anne-Claude Gingras
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Moshe Oren
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Daniel Durocher
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Daniel Schramek
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada.
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada.
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2
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Mentzel J, Hildebrand LS, Kuhlmann L, Fietkau R, Distel LV. Effective Radiosensitization of HNSCC Cell Lines by DNA-PKcs Inhibitor AZD7648 and PARP Inhibitors Talazoparib and Niraparib. Int J Mol Sci 2024; 25:5629. [PMID: 38891817 PMCID: PMC11172136 DOI: 10.3390/ijms25115629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 06/21/2024] Open
Abstract
(1) Head and neck squamous cell carcinoma (HNSCC) is common, while treatment is difficult, and mortality is high. Kinase inhibitors are promising to enhance the effects of radiotherapy. We compared the effects of the PARP inhibitors talazoparib and niraparib and that of the DNA-PKcs inhibitor AZD7648, combined with ionizing radiation. (2) Seven HNSCC cell lines, including Cal33, CLS-354, Detroit 562, HSC4, RPMI2650 (HPV-negative), UD-SCC-2 and UM-SCC-47 (HPV-positive), and two healthy fibroblast cell lines, SBLF8 and SBLF9, were studied. Flow cytometry was used to analyze apoptosis and necrosis induction (AnnexinV/7AAD) and cell cycle distribution (Hoechst). Cell inactivation was studied by the colony-forming assay. (3) AZD7648 had the strongest effects, radiosensitizing all HNSCC cell lines, almost always in a supra-additive manner. Talazoparib and niraparib were effective in both HPV-positive cell lines but only consistently in one and two HPV-negative cell lines, respectively. Healthy fibroblasts were not affected by any combined treatment in apoptosis and necrosis induction or G2/M-phase arrest. AZD7648 alone was not toxic to healthy fibroblasts, while the combination with ionizing radiation reduced clonogenicity. (4) In conclusion, talazoparib, niraparib and, most potently, AZD7648 could improve radiation therapy in HNSCC. Healthy fibroblasts tolerated AZD7648 alone extremely well, but irradiation-induced effects might occur. Our results justify in vivo studies.
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Affiliation(s)
- Jacob Mentzel
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (J.M.); (L.S.H.); (L.K.); (R.F.)
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Laura S. Hildebrand
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (J.M.); (L.S.H.); (L.K.); (R.F.)
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Lukas Kuhlmann
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (J.M.); (L.S.H.); (L.K.); (R.F.)
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Rainer Fietkau
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (J.M.); (L.S.H.); (L.K.); (R.F.)
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
| | - Luitpold V. Distel
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (J.M.); (L.S.H.); (L.K.); (R.F.)
- Comprehensive Cancer Center Erlangen-Europäische Metropolregion Nürnberg (CCC ER-EMN), 91054 Erlangen, Germany
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3
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Madorsky Rowdo FP, Xiao G, Khramtsova GF, Nguyen J, Martini R, Stonaker B, Boateng R, Oppong JK, Adjei EK, Awuah B, Kyei I, Aitpillah FS, Adinku MO, Ankomah K, Osei-Bonsu EB, Gyan KK, Altorki NK, Cheng E, Ginter PS, Hoda S, Newman L, Elemento O, Olopade OI, Davis MB, Martin ML, Bargonetti J. Patient-derived tumor organoids with p53 mutations, and not wild-type p53, are sensitive to synergistic combination PARP inhibitor treatment. Cancer Lett 2024; 584:216608. [PMID: 38199587 PMCID: PMC10922546 DOI: 10.1016/j.canlet.2024.216608] [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: 06/12/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Poly (ADP-ribose) polymerase inhibitors (PARPi) are used for patients with BRCA1/2 mutations, but patients with other mutations may benefit from PARPi treatment. Another mutation that is present in more cancers than BRCA1/2 is mutation to the TP53 gene. In 2D breast cancer cell lines, mutant p53 (mtp53) proteins tightly associate with replicating DNA and Poly (ADP-ribose) polymerase (PARP) protein. Combination drug treatment with the alkylating agent temozolomide and the PARPi talazoparib kills mtp53 expressing 2D grown breast cancer cell lines. We evaluated the sensitivity to the combination of temozolomide plus PARPi talazoparib treatment to breast and lung cancer patient-derived tumor organoids (PDTOs). The combination of the two drugs was synergistic for a cytotoxic response in PDTOs with mtp53 but not for PDTOs with wtp53. The combination of talazoparib and temozolomide induced more DNA double-strand breaks in mtp53 expressing organoids than in wild-type p53 expressing organoids as shown by increased γ-H2AX protein expression. Moreover, breast cancer tissue microarrays (TMAs) showed a positive correlation between stable p53 and high PARP1 expression in sub-groups of breast cancers, which may indicate sub-classes of breast cancers sensitive to PARPi therapy. These results suggest that mtp53 could be a biomarker to predict response to the combination of PARPi talazoparib-temozolomide treatment.
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Affiliation(s)
| | - Gu Xiao
- The Department of Biological Sciences Hunter College, Belfer Building, City University of New York, New York, NY, 10021, USA
| | - Galina F Khramtsova
- Center for Clinical Cancer Genetics and Global Health and Section of Hematology and Oncology, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA
| | - John Nguyen
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Rachel Martini
- Department of Surgery, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Brian Stonaker
- Department of Surgery, Weill Cornell Medicine, New York, NY, 10021, USA
| | | | | | | | | | - Ishmael Kyei
- Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Michael O Adinku
- Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | | | - Kofi K Gyan
- Department of Surgery, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Nasser K Altorki
- Department of Cardiothoracic Surgery, Weill Cornell Medical College, New York, NY, USA
| | - Esther Cheng
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Paula S Ginter
- Department of Pathology, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Syed Hoda
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Lisa Newman
- Department of Surgery, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Olivier Elemento
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Olufunmilayo I Olopade
- Center for Clinical Cancer Genetics and Global Health and Section of Hematology and Oncology, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA
| | - Melissa B Davis
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, 10021, USA; Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Drive, Atlanta, GA, 30310, USA
| | - M Laura Martin
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Jill Bargonetti
- The Department of Biological Sciences Hunter College, Belfer Building, City University of New York, New York, NY, 10021, USA; Department of Cell and Developmental Biology, Weill Cornell Medical College, New York City, NY, 10021, USA; The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, 10016, USA.
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4
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Blackman A, Rees AC, Bowers RR, Jones CM, Vaena SG, Clark MA, Carter S, Villamor ED, Evans D, Emanuel AJ, Fullbright G, Long DT, Spruill L, Romeo MJ, Helke KL, Delaney JR. MYC is sufficient to generate mid-life high-grade serous ovarian and uterine serous carcinomas in a p53-R270H mouse model. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.24.576924. [PMID: 38352443 PMCID: PMC10862747 DOI: 10.1101/2024.01.24.576924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Genetically engineered mouse models (GEMM) have fundamentally changed how ovarian cancer etiology, early detection, and treatment is understood. However, previous GEMMs of high-grade serous ovarian cancer (HGSOC) have had to utilize genetics rarely or never found in human HGSOC to yield ovarian cancer within the lifespan of a mouse. MYC, an oncogene, is amongst the most amplified genes in HGSOC, but it has not previously been utilized to drive HGSOC GEMMs. We coupled Myc and dominant negative mutant p53-R270H with a fallopian tube epithelium-specific promoter Ovgp1 to generate a new GEMM of HGSOC. Female mice developed lethal cancer at an average of 15.1 months. Histopathological examination of mice revealed HGSOC characteristics including nuclear p53 and nuclear MYC in clusters of cells within the fallopian tube epithelium and ovarian surface epithelium. Unexpectedly, nuclear p53 and MYC clustered cell expression was also identified in the uterine luminal epithelium, possibly from intraepithelial metastasis from the fallopian tube epithelium (FTE). Extracted tumor cells exhibited strong loss of heterozygosity at the p53 locus, leaving the mutant allele. Copy number alterations in these cancer cells were prevalent, disrupting a large fraction of genes. Transcriptome profiles most closely matched human HGSOC and serous endometrial cancer. Taken together, these results demonstrate the Myc and Trp53-R270H transgene was able to recapitulate many phenotypic hallmarks of HGSOC through the utilization of strictly human-mimetic genetic hallmarks of HGSOC. This new mouse model enables further exploration of ovarian cancer pathogenesis, particularly in the 50% of HGSOC which lack homology directed repair mutations. Histological and transcriptomic findings are consistent with the hypothesis that uterine serous cancer may originate from the fallopian tube epithelium.
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5
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Ellison V, Polotskaia A, Xiao G, Leybengrub P, Qiu W, Lee R, Hendrickson R, Hu W, Bargonetti J. A CANCER PERSISTENT DNA REPAIR CIRCUIT DRIVEN BY MDM2, MDM4 (MDMX), AND MUTANT P53 FOR RECRUITMENT OF MDC1 AND 53BP1 TO CHROMATIN. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.20.576487. [PMID: 38328189 PMCID: PMC10849484 DOI: 10.1101/2024.01.20.576487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The influence of the metastasis promoting proteins mutant p53 (mtp53) and MDM2 on Cancer Persistent Repair (CPR) to promote cancer cell survival is understudied. Interactions between the DNA repair choice protein 53BP1 and wild type tumor suppressor protein p53 (wtp53) regulates cell cycle control. Cancer cells often express elevated levels of transcriptionally inactive missense mutant p53 (mtp53) that interacts with MDM2 and MDM4/MDMX (herein called MDMX). The ability of mtp53 to maintain a 53BP1 interaction while in the context of interactions with MDM2 and MDMX has not been described. We asked if MDM2 regulates chromatin-based phosphorylation events in the context of mtp53 by comparing the chromatin of T47D breast cancer cells with and without MDM2 in a phospho-peptide stable isotope labeling in cell culture (SILAC) screen. We found reduced phospho-53BP1 chromatin association, which we confirmed by chromatin fractionation and immunofluorescence in multiple breast cancer cell lines. We used the Proximity Ligation Assay (PLA) in breast cancer cell lines and detected 53BP1 in close proximity to mtp53, MDM2, and the DNA repair protein MDC1. Through disruption of the mtp53-MDM2 interaction, by either Nutlin 3a or a mtp53 R273H C-terminal deletion, we uncovered that mtp53 was required for MDM2-53BP1 interaction foci. Our data suggests that mtp53 works with MDM2 and 53BP1 to promote CPR and cell survival.
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Affiliation(s)
- Viola Ellison
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
| | - Alla Polotskaia
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
| | - Gu Xiao
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
| | - Pamella Leybengrub
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
| | - Weigang Qiu
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
| | - Rusia Lee
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
- The Graduate Center City University of New York, Departments of Biology and Biochemistry, New York, NY
| | | | - Wenwei Hu
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ
| | - Jill Bargonetti
- Hunter College, The Department of Biological Sciences, Belfer Research Building, New York, NY
- The Graduate Center City University of New York, Departments of Biology and Biochemistry, New York, NY
- Weill Cornell Medical College, Department of Cell and Developmental Biology, New York, NY
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6
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Hassan M, Shahzadi S, Yasir M, Chun W, Kloczkowski A. Computational prognostic evaluation of Alzheimer's drugs from FDA-approved database through structural conformational dynamics and drug repositioning approaches. Sci Rep 2023; 13:18022. [PMID: 37865690 PMCID: PMC10590448 DOI: 10.1038/s41598-023-45347-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 10/18/2023] [Indexed: 10/23/2023] Open
Abstract
Drug designing is high-priced and time taking process with low success rate. To overcome this obligation, computational drug repositioning technique is being promptly used to predict the possible therapeutic effects of FDA approved drugs against multiple diseases. In this computational study, protein modeling, shape-based screening, molecular docking, pharmacogenomics, and molecular dynamic simulation approaches have been utilized to retrieve the FDA approved drugs against AD. The predicted MADD protein structure was designed by homology modeling and characterized through different computational resources. Donepezil and galantamine were implanted as standard drugs and drugs were screened out based on structural similarities. Furthermore, these drugs were evaluated and based on binding energy (Kcal/mol) profiles against MADD through PyRx tool. Moreover, pharmacogenomics analysis showed good possible associations with AD mediated genes and confirmed through detail literature survey. The best 6 drug (darifenacin, astemizole, tubocurarine, elacridar, sertindole and tariquidar) further docked and analyzed their interaction behavior through hydrogen binding. Finally, MD simulation study were carried out on these drugs and evaluated their stability behavior by generating root mean square deviation and fluctuations (RMSD/F), radius of gyration (Rg) and soluble accessible surface area (SASA) graphs. Taken together, darifenacin, astemizole, tubocurarine, elacridar, sertindole and tariquidar displayed good lead like profile as compared with standard and can be used as possible therapeutic agent in the treatment of AD after in-vitro and in-vivo assessment.
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Affiliation(s)
- Mubashir Hassan
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, 43205, USA.
| | - Saba Shahzadi
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - Muhammad Yasir
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Wanjoo Chun
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Andrzej Kloczkowski
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, 43205, USA.
- Department of Pediatrics, The Ohio State University, Columbus, OH, 43205, USA.
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7
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Bono A, La Monica G, Alamia F, Mingoia F, Gentile C, Peri D, Lauria A, Martorana A. In Silico Mixed Ligand/Structure-Based Design of New CDK-1/PARP-1 Dual Inhibitors as Anti-Breast Cancer Agents. Int J Mol Sci 2023; 24:13769. [PMID: 37762072 PMCID: PMC10531453 DOI: 10.3390/ijms241813769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 08/30/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
CDK-1 and PARP-1 play crucial roles in breast cancer progression. Compounds acting as CDK-1 and/or PARP-1 inhibitors can induct cell death in breast cancer with a selective synthetic lethality mechanism. A mixed treatment by means of CDK-1 and PARP-1 inhibitors resulted in radical breast cancer cell growth reduction. Inhibitors with a dual target mechanism of action could arrest cancer progression by simultaneously blocking the DNA repair mechanism and cell cycle, resulting in advantageous monotherapy. To this aim, in the present work, we identified compound 645656 with a significant affinity for both CDK-1 and PARP-1 by a mixed ligand- and structure-based virtual screening protocol. The Biotarget Predictor Tool was used at first in a Multitarget mode to filter the large National Cancer Institute (NCI) database. Then, hierarchical docking studies were performed to further screen the compounds and evaluate the ligands binding mode, whose putative dual-target mechanism of action was investigated through the correlation between the antiproliferative activity data and the target proteins' (CDK-1 and PARP-1) expression pattern. Finally, a Molecular Dynamics Simulation confirmed the high stability of the most effective selected compound 645656 in complex with both PARP-1 and CDK-1.
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Affiliation(s)
- Alessia Bono
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
| | - Gabriele La Monica
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
| | - Federica Alamia
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
| | - Francesco Mingoia
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Consiglio Nazionale delle Ricerche (CNR), 90146 Palermo, Italy;
| | - Carla Gentile
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
| | - Daniele Peri
- Dipartimento di Ingegneria dell’Innovazione Industriale e Digitale, Università degli Studi di Palermo, Viale 10 delle Scienze Ed. 6, 90128 Palermo, Italy;
| | - Antonino Lauria
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
| | - Annamaria Martorana
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche “STEBICEF”, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (A.B.); (G.L.M.); (F.A.); (C.G.); (A.M.)
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8
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Kotnik EN, Mullen MM, Spies NC, Li T, Inkman M, Zhang J, Martins-Rodrigues F, Hagemann IS, McCourt CK, Thaker PH, Hagemann AR, Powell MA, Mutch DG, Khabele D, Longmore GD, Mardis ER, Maher CA, Miller CA, Fuh KC. Genetic characterization of primary and metastatic high-grade serous ovarian cancer tumors reveals distinct features associated with survival. Commun Biol 2023; 6:688. [PMID: 37400526 DOI: 10.1038/s42003-023-05026-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 06/07/2023] [Indexed: 07/05/2023] Open
Abstract
High-grade serous ovarian cancer (HGSC) is the most lethal histotype of ovarian cancer and the majority of cases present with metastasis and late-stage disease. Over the last few decades, the overall survival for patients has not significantly improved, and there are limited targeted treatment options. We aimed to better characterize the distinctions between primary and metastatic tumors based on short- or long-term survival. We characterized 39 matched primary and metastatic tumors by whole exome and RNA sequencing. Of these, 23 were short-term (ST) survivors (overall survival (OS) < 3.5 years) and 16 were long-term (LT) survivors (OS > 5 years). We compared somatic mutations, copy number alterations, mutational burden, differential gene expression, immune cell infiltration, and gene fusion predictions between the primary and metastatic tumors and between ST and LT survivor cohorts. There were few differences in RNA expression between paired primary and metastatic tumors, but significant differences between the transcriptomes of LT and ST survivors in both their primary and metastatic tumors. These findings will improve the understanding of the genetic variation in HGSC that exist between patients with different prognoses and better inform treatments by identifying new targets for drug development.
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Affiliation(s)
- Emilee N Kotnik
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Mary M Mullen
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Nicholas C Spies
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8118, St. Louis, MO, USA
| | - Tiandao Li
- Department of Developmental Biology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8103, St. Louis, MO, USA
| | - Matthew Inkman
- Department of Radiation Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8224, St. Louis, MO, USA
| | - Jin Zhang
- Department of Radiation Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8224, St. Louis, MO, USA
| | - Fernanda Martins-Rodrigues
- Division of Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8069, St. Louis, MO, USA
| | - Ian S Hagemann
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8118, St. Louis, MO, USA
| | - Carolyn K McCourt
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Premal H Thaker
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Andrea R Hagemann
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Matthew A Powell
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - David G Mutch
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Dineo Khabele
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA
| | - Gregory D Longmore
- Division of Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8069, St. Louis, MO, USA
- ICCE Institute, Washington University in St. Louis, 660 S. Euclid Ave CB, 8225, St. Louis, MO, USA
| | - Elaine R Mardis
- Institute for Genomic Medicine, Nationwide Children's Hospital, 575 Childrens Crossroad, Columbus, OH, USA
| | - Christopher A Maher
- Division of Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8069, St. Louis, MO, USA
- McDonnell Genome Institute, Washington University in St. Louis, 4444 Forest Park Avenue, CB 8501, St. Louis, MO, USA
- Department of Internal Medicine, Washington University in St. Louis, 660 S. Euclid Ave, MSC 8066-22-6602, St. Louis, MO, USA
- Department of Biomedical Engineering, Washington University in St. Louis, McKelvey School of Engineering, 1 Brookings Drive, St. Louis, MO, USA
| | - Christopher A Miller
- Division of Oncology, Washington University in St. Louis, 660 S. Euclid Ave CB, 8069, St. Louis, MO, USA
| | - Katherine C Fuh
- Division of Gynecologic Oncology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA.
- Center for Reproductive Health Sciences, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA.
- Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 S. Euclid Ave Mailstop, 8064, St. Louis, MO, USA.
- Department of Obstetrics and Gynecology & Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA.
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9
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Gao C, Li J, Zeng F, Wang L, Chen K, Chen D, Hong J, Qu C. MCM6 promotes intrahepatic cholangiocarcinoma progression by upregulating E2F1 and enhancing epithelial-mesenchymal transition. Carcinogenesis 2023; 44:279-290. [PMID: 37185675 DOI: 10.1093/carcin/bgad023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/22/2022] [Accepted: 04/21/2023] [Indexed: 05/17/2023] Open
Abstract
Minichromosome maintenance complex component 6 (MCM6), a member of the MCM family, plays a pivotal role in DNA replication initiation and genome duplication of proliferating cells. MCM6 is upregulated in multiple malignancies and is considered a novel diagnostic biomarker. However, the functional contributions and prognostic value of MCM6 in intrahepatic cholangiocarcinoma (ICC) remain unexplored. In this study, we investigated the molecular function of MCM6 in ICC. Data from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO, GSE107943) indicated an upregulation of MCM6 in tumor tissues. Immunohistochemical analysis performed on 115 cases of ICC samples confirmed the upregulation of MCM6 and further suggested that a high level of MCM6 expression predicted shorter overall and disease-free survival in ICC patients. Functional studies suggested that MCM6 knockdown significantly suppressed cell viability, blocked cell cycle progression and inhibited metastasis, while the enhancement of MCM6 expression promoted the proliferation and migration of ICC cells both in vitro and in vivo. Mechanistically, Gene Set Enrichment Analysis (GSEA) suggested that the epithelial-mesenchymal transition (EMT) and E2F1-correlated genes were enriched in ICC tissues with high MCM6 expression. Further verification indicated that MCM6 promoted the EMT of ICC cells via upregulating E2F1. In addition, E2F1 knockdown partially blocked the pro-malignant effects of MCM6 overexpression. In summary, MCM6 was found to be a novel prognostic and predictive marker for ICC. MCM6 promoted ICC progression via activation of E2F1-mediated EMT.
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Affiliation(s)
- Chongqing Gao
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
| | - Jing Li
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
| | - Fuling Zeng
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
| | - Lijuan Wang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
| | - Kaiyun Chen
- Department of General Surgery, Guangzhou Hospital of Integrated Traditional and West Medicine, Guangzhou, Guangdong 510632, China
| | - Dong Chen
- Department of Pancreato-Biliary Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510632, China
| | - Jian Hong
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong 510317, China
| | - Chen Qu
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou, Guangdong 510630, China
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10
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Zhang Y, Wu K, Liu Y, Sun S, Shao Y, Li Q, Sui X, Duan C. UHRF2 promotes the malignancy of hepatocellular carcinoma by PARP1 mediated autophagy. Cell Signal 2023:110782. [PMID: 37356603 DOI: 10.1016/j.cellsig.2023.110782] [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: 04/07/2023] [Revised: 06/07/2023] [Accepted: 06/22/2023] [Indexed: 06/27/2023]
Abstract
Autophagy have critical implications in the proliferation and metastasis of HCC. In the current study, we aimed to explore the underlying mechanisms of UHRF2 regulates HCC cell autophagy and HCC progression. We initially determined the relationship between UHRF2 and HCC autophagy, oncogenicity and patient survival through GSEA database and TCGA database. We mainly investigated the effect of UHRF2 on HCC development and autophagy through western blot, electron microscopy, and immunofluorescence. Functionally, UHRF2 was positively involved in the autophagy activation. Overexpression of UHRF2 reduced apoptosis in HCC cells, and promote the malignancy phenotype of HCC both in vitro and in vivo. Mechanistically, PRDX1 bound to UHRF2 and upregulated its protein expression to facilitate the biological function of UHRF2 in HCC. Meanwhile, UHRF2 bound to autophagy-related protein PARP1 and upregulated PARP1 protein level. The results showed that UHRF2 promoted autophagy and contributed to the malignant phenotype of hepatocellular carcinoma by regulating PARP1 levels. In summary, a novel interaction between PRDX1, UHRF2, and PARP1 was revealed, suggesting that UHRF2 could inspire a potential biomarker and potential therapeutic target for HCC.
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Affiliation(s)
- Yiqi Zhang
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
| | - Kejia Wu
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
| | - Yuxin Liu
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
| | - Shuangling Sun
- Department of Biochemistry, Chongqing Medical and Pharmaceutical College, Chongqing 400016, China
| | - Yue Shao
- Department of Thoracic surgery, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Qingxiu Li
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
| | - Xinying Sui
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
| | - Changzhu Duan
- Department of Cell Biology and Genetics, Center for Molecular Medicine and Oncology Research, Chongqing Medical University, Chongqing 400016, China.
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11
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Madorsky Rowdo FP, Xiao G, Khramtsova GF, Nguyen J, Olopade OI, Martini R, Stonaker B, Boateng R, Oppong JK, Adjei EK, Awuah B, Kyei I, Aitpillah FS, Adinku MO, Ankomah K, Osei-Bonsu EB, Gyan KK, Altorki NK, Cheng E, Ginter PS, Hoda S, Newman L, Elemento O, Davis MB, Martin ML, Bargonetti J. Patient-derived tumor organoids with p53 mutations, and not wild-type p53, are sensitive to synergistic combination PARP inhibitor treatment. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.22.544406. [PMID: 38076873 PMCID: PMC10705575 DOI: 10.1101/2023.06.22.544406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Poly (ADP-ribose) polymerase inhibitors (PARPi) are used for patients with BRCA1/2 mutations, but patients with other mutations may benefit from PARPi treatment. Another mutation that is present in more cancers than BRCA1/2 is mutation to the TP53 gene. In 2D breast cancer cell lines, mutant p53 (mtp53) proteins tightly associate with replicating DNA and Poly (ADP-ribose) polymerase (PARP) protein. Combination drug treatment with the alkylating agent temozolomide and the PARPi talazoparib kills mtp53 expressing 2D grown breast cancer cell lines. We evaluated the sensitivity to the combination of temozolomide plus PARPi talazoparib treatment to breast and lung cancer patient-derived tumor organoids (PDTOs). The combination of the two drugs was synergistic for a cytotoxic response in PDTOs with mtp53 but not for PDTOs with wtp53. The combination of talazoparib and temozolomide induced more DNA double-strand breaks in mtp53 expressing organoids than in wild-type p53 expressing organoids as shown by increased γ-H2AX protein expression. Moreover, breast cancer tissue microarrays (TMAs) showed a positive correlation between stable p53 and high PARP1 expression in sub-groups of breast cancers, which may indicate sub-classes of breast cancers sensitive to PARPi therapy. These results suggest that mtp53 could be a biomarker to predict response to the combination of PARPi talazoparib-temozolomide treatment.
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Affiliation(s)
| | - Gu Xiao
- The Department of Biological Sciences Hunter College, Belfer Building, City University of New York, New York, NY10021
| | - Galina F Khramtsova
- Center for Clinical Cancer Genetics and Global Health and Section of Hematology and Oncology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - John Nguyen
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, New York, NY10021
| | - Olufunmilayo I Olopade
- Center for Clinical Cancer Genetics and Global Health and Section of Hematology and Oncology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Rachel Martini
- Department of Surgery, Weill Cornell Medicine, New York, NY10021
| | - Brian Stonaker
- Department of Surgery, Weill Cornell Medicine, New York, NY10021
| | | | | | | | | | - Ishmael Kyei
- Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | | | | | | | - Kofi K. Gyan
- Department of Surgery, Weill Cornell Medicine, New York, NY10021
| | - Nasser K. Altorki
- Department of Cardiothoracic Surgery, Weill Cornell Medical College, New York, NY
| | - Esther Cheng
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY
| | - Paula S. Ginter
- Department of Pathology, NYU Langone Hospital-Long Island, Mineola, NY
| | - Syed Hoda
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY
| | - Lisa Newman
- Department of Surgery, Weill Cornell Medicine, New York, NY10021
| | - Olivier Elemento
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, New York, NY10021
| | - Melissa B. Davis
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, New York, NY10021
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Drive, Atlanta, GA 30310
| | - M. Laura Martin
- Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, New York, NY10021
| | - Jill Bargonetti
- The Department of Biological Sciences Hunter College, Belfer Building, City University of New York, New York, NY10021
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York City, NY 10021
- The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY 10016
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12
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Li T, Wang X, Qin S, Chen B, Yi M, Zhou J. Targeting PARP for the optimal immunotherapy efficiency in gynecologic malignancies. Biomed Pharmacother 2023; 162:114712. [PMID: 37075667 DOI: 10.1016/j.biopha.2023.114712] [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: 03/10/2023] [Revised: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 04/21/2023] Open
Abstract
Gynecologic cancer, which includes ovarian, cervical, endometrial, vulvar, and vaginal cancer, is a major health concern for women all over the world. Despite the availability of various treatment options, many patients eventually progress to advanced stages and face high mortality rates. PARPi (poly (ADP-ribose) polymerase inhibitor) and immune checkpoint inhibitor (ICI) have both shown significant efficacy in the treatment of advanced and metastatic gynecologic cancer. However, both treatments have limitations, including inevitable resistance and a narrow therapeutic window, making PARPi and ICI combination therapy a promising approach to treating gynecologic malignancies. Preclinical and clinical trials have looked into the combination therapy of PARPi and ICI. PARPi improves ICI efficacy by inducing DNA damage and increasing tumor immunogenicity, resulting in a stronger immune response against cancer cells. ICI, conversly, can increase PARPi sensitivity by priming and activating immune cells, consequently prompting immune cytotoxic effect. Several clinical trials in gynecologic cancer patients have investigated the combination therapy of PARPi and ICI. When compared to monotherapy, the combination of PARPi and ICI increased progression-free survival and overall survival in ovarian cancer patients. The combination therapy has also been studied in other types of gynecologic cancer, including endometrial and cervical cancer, with promising results. Finally, the combination therapeutic strategy of PARPi and ICI is a promising approach in the treatment of gynecologic cancer, particularly advanced and metastatic stages. Preclinical studies and clinical trials have demonstrated the safety and efficacy of this combination therapy in improving patient outcomes and quality of life.
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Affiliation(s)
- Tianye Li
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xinrun Wang
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shuang Qin
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingxin Chen
- Department of Gynecologic Oncology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ming Yi
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
| | - Jianwei Zhou
- Department of Gynecology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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13
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Li MM, Awasthi S, Ghosh S, Bisht D, Coban Akdemir ZH, Sheynkman GM, Sahni N, Yi SS. Gain-of-Function Variomics and Multi-omics Network Biology for Precision Medicine. Methods Mol Biol 2023; 2660:357-372. [PMID: 37191809 PMCID: PMC10476052 DOI: 10.1007/978-1-0716-3163-8_24] [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] [Indexed: 05/17/2023]
Abstract
Traditionally, disease causal mutations were thought to disrupt gene function. However, it becomes more clear that many deleterious mutations could exhibit a "gain-of-function" (GOF) behavior. Systematic investigation of such mutations has been lacking and largely overlooked. Advances in next-generation sequencing have identified thousands of genomic variants that perturb the normal functions of proteins, further contributing to diverse phenotypic consequences in disease. Elucidating the functional pathways rewired by GOF mutations will be crucial for prioritizing disease-causing variants and their resultant therapeutic liabilities. In distinct cell types (with varying genotypes), precise signal transduction controls cell decision, including gene regulation and phenotypic output. When signal transduction goes awry due to GOF mutations, it would give rise to various disease types. Quantitative and molecular understanding of network perturbations by GOF mutations may provide explanations for 'missing heritability" in previous genome-wide association studies. We envision that it will be instrumental to push current paradigm toward a thorough functional and quantitative modeling of all GOF mutations and their mechanistic molecular events involved in disease development and progression. Many fundamental questions pertaining to genotype-phenotype relationships remain unresolved. For example, which GOF mutations are key for gene regulation and cellular decisions? What are the GOF mechanisms at various regulation levels? How do interaction networks undergo rewiring upon GOF mutations? Is it possible to leverage GOF mutations to reprogram signal transduction in cells, aiming to cure disease? To begin to address these questions, we will cover a wide range of topics regarding GOF disease mutations and their characterization by multi-omic networks. We highlight the fundamental function of GOF mutations and discuss the potential mechanistic effects in the context of signaling networks. We also discuss advances in bioinformatic and computational resources, which will dramatically help with studies on the functional and phenotypic consequences of GOF mutations.
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Affiliation(s)
- Mark M Li
- Livestrong Cancer Institutes, Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
| | - Sharad Awasthi
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sumanta Ghosh
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Deepa Bisht
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Zeynep H Coban Akdemir
- Human Genetics Center, Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Gloria M Sheynkman
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, USA
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Virginia, Charlottesville, VA, USA
- Center for Public Health Genomics, and UVA Comprehensive Cancer Center, University of Virginia, Charlottesville, VA, USA
| | - Nidhi Sahni
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Quantitative and Computational Biosciences Program, Baylor College of Medicine, Houston, TX, USA.
| | - S Stephen Yi
- Livestrong Cancer Institutes, Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA.
- Oden Institute for Computational Engineering and Sciences (ICES), The University of Texas at Austin, Austin, TX, USA.
- Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, USA.
- Interdisciplinary Life Sciences Graduate Programs (ILSGP), College of Natural Sciences, The University of Texas at Austin, Austin, TX, USA.
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14
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Cao Q, Li L, Zhao Y, Wang C, Shi Y, Tao X, Cai C, Han XX. PARPi Decreased Primary Ovarian Cancer Organoid Growth Through Early Apoptosis and Base Excision Repair Pathway. Cell Transplant 2023; 32:9636897231187996. [PMID: 37488947 PMCID: PMC10369085 DOI: 10.1177/09636897231187996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023] Open
Abstract
Ovarian cancer (OC), particularly high-grade serous cancer (HGSC), is the leading cause of mortality among gynecological cancers owing to the treatment difficulty and high recurrence probability. As therapeutic drugs approved for OC, poly ADP-ribose polymerase inhibitors (PARPi) lead to synthetic lethality by inhibiting single-strand DNA repair, particularly in homologous recombination-deficient cancers. However, even PARPi have distinct efficacies and are prone to have drug resistance, the molecular mechanisms underlying the PARPi resistance in OC remain unclear. A patient-derived organoid platform was generated and treated with a PARPi to understand the factors associated with PARPi resistance. PARPi significantly inhibits organoid growth. After 72 h of treatment, both the size of organoids and the numbers of adherent cells decreased. Moreover, immunofluorescence results showed that the proportion of Ki67 positive cells significantly reduced. When the PARPi concentration reached 200 nM, the percentage of Ki67+/4',6-diamidino-2-phenylindole (DAPI) cells decreased approximately 50%. PARPi treatment also affected the expression of genes involved in base excision repair and cell cycle. Functional assays revealed that PARPi inhibits cell growth by upregulating early apoptosis. The expression levels of several key genes were validated. In addition to previously reported genes, some promising genes FEN1 and POLA2, were also be founded. The results demonstrate the complex effects of PARPi treatment on changes in potential genes relevant to PARPi resistance, and provide perspectives for further research on the PARPi resistance mechanisms.
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Affiliation(s)
- Qi Cao
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Lanyang Li
- Shanghai Lisheng Biotech, Shanghai, China
| | - Yuqing Zhao
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Chen Wang
- Shanghai Lisheng Biotech, Shanghai, China
| | | | - Xiang Tao
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | | | - Xin-Xin Han
- Shanghai Key laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital and School of Stomatology, Fudan University, Shanghai, China
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15
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Marvalim C, Datta A, Lee SC. Role of p53 in breast cancer progression: An insight into p53 targeted therapy. Theranostics 2023; 13:1421-1442. [PMID: 36923534 PMCID: PMC10008729 DOI: 10.7150/thno.81847] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/26/2023] [Indexed: 03/14/2023] Open
Abstract
The transcription factor p53 is an important regulator of a multitude of cellular processes. In the presence of genotoxic stress, p53 is activated to facilitate DNA repair, cell cycle arrest, and apoptosis. In breast cancer, the tumor suppressive activities of p53 are frequently inactivated by either the overexpression of its negative regulator MDM2, or mutation which is present in 30-35% of all breast cancer cases. Notably, the frequency of p53 mutation is highly subtype dependent in breast cancers, with majority of hormone receptor-positive or luminal subtypes retaining the wild-type p53 status while hormone receptor-negative patients predominantly carry p53 mutations with gain-of-function oncogenic activities that contribute to poorer prognosis. Thus, a two-pronged strategy of targeting wild-type and mutant p53 in different subtypes of breast cancer can have clinical relevance. The development of p53-based therapies has rapidly progressed in recent years, and include unique small molecule chemical inhibitors, stapled peptides, PROTACs, as well as several genetic-based approaches using vectors and engineered antibodies. In this review, we highlight the therapeutic strategies that are in pre-clinical and clinical development to overcome p53 inactivation in both wild-type and mutant p53-bearing breast tumors, and discuss their efficacies and limitations in pre-clinical and clinical settings.
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Affiliation(s)
- Charlie Marvalim
- Cancer Science Institute of Singapore, Singapore 117599, Singapore
- ✉ Corresponding authors: C.M. E-mail: ; L.S.C. E-mail: ; Tel: (65) 6516 7282
| | - Arpita Datta
- Cancer Science Institute of Singapore, Singapore 117599, Singapore
| | - Soo Chin Lee
- Cancer Science Institute of Singapore, Singapore 117599, Singapore
- Department of Haematology-Oncology, National University Cancer Institute, Singapore, National University Health System, Singapore 119228, Singapore
- ✉ Corresponding authors: C.M. E-mail: ; L.S.C. E-mail: ; Tel: (65) 6516 7282
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16
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Lundine D, Annor GK, Chavez V, Maimos S, Syed Z, Jiang S, Ellison V, Bargonetti J. The C-terminus of Gain-of-Function Mutant p53 R273H Is Required for Association with PARP1 and Poly-ADP-Ribose. Mol Cancer Res 2022; 20:1799-1810. [PMID: 36074101 PMCID: PMC9716242 DOI: 10.1158/1541-7786.mcr-22-0133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 08/02/2022] [Accepted: 09/02/2022] [Indexed: 01/15/2023]
Abstract
The TP53 gene is mutated in 80% of triple-negative breast cancers. Cells that harbor the hot-spot p53 gene mutation R273H produce an oncogenic mutant p53 (mtp53) that enhances cell proliferative and metastatic properties. The enhanced activities of mtp53 are collectively referred to as gain-of-function (GOF), and may include transcription-independent chromatin-based activities shared with wild-type p53 (wtp53) such as association with replicating DNA and DNA replication associated proteins like PARP1. However, how mtp53 upregulates cell proliferation is not well understood. wtp53 interacts with PARP1 using a portion of its C-terminus. The wtp53 oligomerization and far C-terminal domain (CTD) located within the C-terminus constitute putative GOF-associated domains, because mtp53 R273H expressing breast cancer cells lacking both domains manifest slow proliferation phenotypes. We addressed if the C-terminal region of mtp53 R273H is important for chromatin interaction and breast cancer cell proliferation using CRISPR-Cas9 mutated MDA-MB-468 cells endogenously expressing mtp53 R273H C-terminal deleted isoforms (R273HΔ381-388 and R273HΔ347-393). The mtp53 R273HΔ347-393 lacks the CTD and a portion of the oligomerization domain. We observed that cells harboring mtp53 R273HΔ347-393 (compared with mtp53 R273H full-length) manifest a significant reduction in chromatin, PARP1, poly-ADP-ribose (PAR), and replicating DNA binding. These cells also exhibited impaired response to hydroxyurea replicative stress, decreased sensitivity to the PARP-trapping drug combination temozolomide-talazoparib, and increased phosphorylated 53BP1 foci, suggesting reduced Okazaki fragment processing. IMPLICATIONS The C-terminal region of mtp53 confers GOF activity that mediates mtp53-PARP1 and PAR interactions assisting DNA replication, thus implicating new biomarkers for PARP inhibitor therapy.
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Affiliation(s)
- Devon Lundine
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York.,The Graduate Center Biology and Biochemistry Programs, City University of New York, New York
| | - George K. Annor
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York.,The Graduate Center Biology and Biochemistry Programs, City University of New York, New York
| | - Valery Chavez
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York.,The Graduate Center Biology and Biochemistry Programs, City University of New York, New York
| | - Styliana Maimos
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York
| | - Zafar Syed
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York
| | - Shuhong Jiang
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York
| | - Viola Ellison
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York.,Corresponding Authors: Jill Bargonetti, Hunter College, 413 East 69th Street, New York, NY 10021. Phone: 212-896-0465; E-mail: ; and Viola Ellison,
| | - Jill Bargonetti
- The Department of Biological Sciences, Hunter College, Belfer Building, City University of New York, New York.,The Graduate Center Biology and Biochemistry Programs, City University of New York, New York.,Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York.,Corresponding Authors: Jill Bargonetti, Hunter College, 413 East 69th Street, New York, NY 10021. Phone: 212-896-0465; E-mail: ; and Viola Ellison,
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17
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Lukac D, Machacova Z, Moudry P. Emetine blocks DNA replication via proteosynthesis inhibition not by targeting Okazaki fragments. Life Sci Alliance 2022; 5:5/12/e202201560. [PMID: 36260751 PMCID: PMC9463495 DOI: 10.26508/lsa.202201560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/30/2022] [Accepted: 08/30/2022] [Indexed: 11/24/2022] Open
Abstract
This study clarifies the long-standing misuse of emetine as a lagging strand synthesis-specific inhibitor. Emetine blocks the synthesis of both DNA strands by the inhibition of protein biosynthesis. DNA synthesis of the leading and lagging strands works independently and cells tolerate single-stranded DNA generated during strand uncoupling if it is protected by RPA molecules. Natural alkaloid emetine is used as a specific inhibitor of lagging strand synthesis, uncoupling leading and lagging strand replication. Here, by analysis of lagging strand synthesis inhibitors, we show that despite emetine completely inhibiting DNA replication: it does not induce the generation of single-stranded DNA and chromatin-bound RPA32 (CB-RPA32). In line with this, emetine does not activate the replication checkpoint nor DNA damage response. Emetine is also an inhibitor of proteosynthesis and ongoing proteosynthesis is essential for the accurate replication of DNA. Mechanistically, we demonstrate that the acute block of proteosynthesis by emetine temporally precedes its effects on DNA replication. Thus, our results are consistent with the hypothesis that emetine affects DNA replication by proteosynthesis inhibition. Emetine and mild POLA1 inhibition prevent S-phase poly(ADP-ribosyl)ation. Collectively, our study reveals that emetine is not a specific lagging strand synthesis inhibitor with implications for its use in molecular biology.
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Affiliation(s)
- David Lukac
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Zuzana Machacova
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Pavel Moudry
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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18
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Li S, Wang L, Wang Y, Zhang C, Hong Z, Han Z. The synthetic lethality of targeting cell cycle checkpoints and PARPs in cancer treatment. J Hematol Oncol 2022; 15:147. [PMID: 36253861 PMCID: PMC9578258 DOI: 10.1186/s13045-022-01360-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Continuous cell division is a hallmark of cancer, and the underlying mechanism is tumor genomics instability. Cell cycle checkpoints are critical for enabling an orderly cell cycle and maintaining genome stability during cell division. Based on their distinct functions in cell cycle control, cell cycle checkpoints are classified into two groups: DNA damage checkpoints and DNA replication stress checkpoints. The DNA damage checkpoints (ATM-CHK2-p53) primarily monitor genetic errors and arrest cell cycle progression to facilitate DNA repair. Unfortunately, genes involved in DNA damage checkpoints are frequently mutated in human malignancies. In contrast, genes associated with DNA replication stress checkpoints (ATR-CHK1-WEE1) are rarely mutated in tumors, and cancer cells are highly dependent on these genes to prevent replication catastrophe and secure genome integrity. At present, poly (ADP-ribose) polymerase inhibitors (PARPi) operate through “synthetic lethality” mechanism with mutant DNA repair pathways genes in cancer cells. However, an increasing number of patients are acquiring PARP inhibitor resistance after prolonged treatment. Recent work suggests that a combination therapy of targeting cell cycle checkpoints and PARPs act synergistically to increase the number of DNA errors, compromise the DNA repair machinery, and disrupt the cell cycle, thereby increasing the death rate of cancer cells with DNA repair deficiency or PARP inhibitor resistance. We highlight a combinational strategy involving PARP inhibitors and inhibition of two major cell cycle checkpoint pathways, ATM-CHK2-TP53 and ATR-CHK1-WEE1. The biological functions, resistance mechanisms against PARP inhibitors, advances in preclinical research, and clinical trials are also reviewed.
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Affiliation(s)
- Shuangying Li
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Liangliang Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Yuanyuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Changyi Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Zhenya Hong
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Zhiqiang Han
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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19
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Zhou X, Jung JH, Lu H. Editorial: The expanding network of p53 signaling: Reaching to the unknown of cancer. Front Cell Dev Biol 2022; 10:978056. [PMID: 36313566 PMCID: PMC9615036 DOI: 10.3389/fcell.2022.978056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/04/2022] [Indexed: 12/01/2022] Open
Affiliation(s)
- Xiang Zhou
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- *Correspondence: Xiang Zhou, ; Ji Hoon Jung, Hua Lu,
| | - Ji Hoon Jung
- College of Korean Medicine, Kyung Hee University, Seoul, South Korea
- *Correspondence: Xiang Zhou, ; Ji Hoon Jung, Hua Lu,
| | - Hua Lu
- Department of Biochemistry & Molecular Biology and Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA, United States
- *Correspondence: Xiang Zhou, ; Ji Hoon Jung, Hua Lu,
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20
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Canar J, Manandhar-Sasaki P, Bargonetti J. Mutant C. elegans p53 Together with Gain-of-Function GLP-1/Notch Decreases UVC-Damage-Induced Germline Cell Death but Increases PARP Inhibitor-Induced Germline Cell Death. Cancers (Basel) 2022; 14:4929. [PMID: 36230851 PMCID: PMC9563635 DOI: 10.3390/cancers14194929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/02/2022] [Accepted: 10/04/2022] [Indexed: 11/16/2022] Open
Abstract
The TP53 gene is mutated in over 50% of human cancers, and the C. elegansp53-1(cep-1) gene encodes the ortholog CEP-1. CEP-1 is activated by ultraviolet type C (UVC)-induced DNA damage and activates genes that induce germline apoptosis. UVC treatment of gain-of-function glp-1(ar202gf)/Notch tumorous animals reduces germline stem cell numbers (and overall tumor size), while UVC treatment of double-mutant cep-1/p53(gk138);glp-1/Notch(ar202gf) increases DNA damage adducts and stem cell tumor volume. We compared UVC-induced mitotic stem cell death and animal lifespans for the two different C. elegans tumorous strains. C. elegans stem cell compartment death has never been observed, and we used engulfed small stem cells, notable by green fluorescent puncta, to count cell death events. We found UVC treatment of glp-1(ar202gf) animals increased stem cell death and increased lifespan. However, UVC treatment of double-mutant cep-1/p53(gk138);glp-1/Notch(ar202gf) animals decreased stem cell death, increased tumor volume, and decreased animal lifespan. There are pharmacological agents that induce p53-independent cell death of human cells in culture; and two notable protocols are the PARP-trapping agents of temozolomide plus talazoparib and the nucleoside analogue 8-amino-adenosine. It is important to determine ways to rapidly test for pharmacological agents able to induce p53-independent cell death. We tested feeding cep-1/p53(gk138);glp-1/Notch(ar202gf) nematodes with either 8-amino-adenosine or temozolomide plus talazoparib and found both were able to decrease tumor volume. This is the first comparison for p53-independent responses in cep-1/p53(gk138);glp-1/Notch(ar202gf) animals and showed UVC DNA damage increased tumor volume and decreased lifespan while PARP inhibition decreased tumor volume.
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Affiliation(s)
- Jorge Canar
- Department of Biological Sciences, Hunter College, City University of New York, New York, NY 10065, USA
| | - Prima Manandhar-Sasaki
- Department of Biological Sciences, Hunter College, City University of New York, New York, NY 10065, USA
- Macaulay Honors College at Hunter College, City University of New York, New York, NY 10065, USA
| | - Jill Bargonetti
- Department of Biological Sciences, Hunter College, City University of New York, New York, NY 10065, USA
- The Graduate Center, Departments of Biology and Biochemistry, City University of New York, New York, NY 10016, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY 10065, USA
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21
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Exploring the R-ISS stage-specific regular networks in the progression of multiple myeloma at single-cell resolution. SCIENCE CHINA. LIFE SCIENCES 2022; 65:1811-1823. [PMID: 35437648 DOI: 10.1007/s11427-021-2097-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/22/2022] [Indexed: 10/18/2022]
Abstract
The Revised International Staging System (R-ISS) is a simple and powerful prognostic tool for multiple myeloma (MM). However, heterogeneity in R-ISS stage is still poorly characterised, hampering improvement of treatments. We used single-cell RNA-seq to examine novel cellular heterogeneity and regular networks in nine MM patients stratified by R-ISS. Plasma cells were clustered into nine groups (P1-P9) based on gene expression, where P1-P5 were almost enriched in stage III.PDIA6 was significantly upregulated in P3 and LETM1 was enriched in P1, and they were validated to be upregulated in the MM cell line and in 22 other patients' myeloma cells. Furthermore, in progression, PDIA6 was newly found and verified to be activated by UQCRB through oxidative phosphorylation, while LETM1 was activated by STAT1 via the C-type lectin receptor-signalling pathway. Finally, a subcluster of monocytes was exclusively found in stage III specifically expressed chemokines modulated by ATF3. A few ligand-receptor pairs (CCL3/CCL5/CCL3L1-CCR1) were obviously active in monocyte-plasma communications in stage III. Herein, this study identified novel molecules, networks and crosstalk pairs in different R-ISS stages of MM, providing significant insight for its prognosis and treatment.
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22
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Xing AY, Liu L, Liang K, Wang B. p53 missense mutation is associated with immune cell PD-L1 expression in triple-negative breast cancer. Cancer Invest 2022; 40:879-888. [PMID: 35980253 DOI: 10.1080/07357907.2022.2115058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The programmed death ligand 1 (PD-L1) is a pivotal biomarker of immunotherapy in triple negative breast cancer (TNBC). TP53 is reported as a positive regulatory predictor of immune efficacy. The correlation of p53 expression or mutation and PD-L1 expression is explored. By immunohistochemistry, PD-L1 expression between p53 mutation (missense and nonsense) and wild type; p53 no-expression/loss vs. expression were compared. There was a significant association between p53 mutation, especially missense mutation with higher histological grade, and PD-L1 expression in immune cells (ICs). Both p53 missense mutation and PD-L1 expression may be potential targets for improving immunotherapy response in TNBC.
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Affiliation(s)
- Ai-Yan Xing
- Department of Pathology, Shandong University Qilu Hospital, Jinan Wen Hua Xi Road 107, 250012, Jinan, P.R. China
| | - Long Liu
- Department of Pathology, Shandong University Qilu Hospital, Jinan Wen Hua Xi Road 107, 250012, Jinan, P.R. China
| | - Ke Liang
- Department of Pathology, Shandong University Qilu Hospital, Jinan Wen Hua Xi Road 107, 250012, Jinan, P.R. China
| | - Bin Wang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital; Key Laboratory of Metabolism and Gastrointestinal Tumor, the First Affiliated Hospital of Shandong First Medical University; Key Laboratory of Laparoscopic Technology, the First Affiliated Hospital of Shandong First Medical University; Shandong Medicine and Health Key Laboratory of General Surgery, Jinan, P.R. China
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23
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Seo SU, Woo SM, Lee SG, Kim MY, Lee HS, Choi YH, Kim SH, Chang YC, Min KJ, Kwon TK. BAP1 phosphorylation-mediated Sp1 stabilization plays a critical role in cathepsin K inhibition-induced C-terminal p53-dependent Bax upregulation. Redox Biol 2022; 53:102336. [PMID: 35584569 PMCID: PMC9117696 DOI: 10.1016/j.redox.2022.102336] [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: 03/14/2022] [Revised: 04/29/2022] [Accepted: 05/09/2022] [Indexed: 11/25/2022] Open
Abstract
Cathepsin K inhibitor (odanacatib; ODN) and cathepsin K knockdown (siRNA) enhance oxaliplatin-induced apoptosis through p53-dependent Bax upregulation. However, its underlying mechanisms remain unclear. In this study, we elucidated the mechanism behind enhancement of oxaliplatin-induced apoptosis by ODN. We also investigated the molecular mechanisms of ODN-induced Bax upregulation. Here, we demonstrated that ODN-induced Bax upregulation required p53, but it was independent of p53 transcriptional activity. Various mutants of the DNA-binding domain of p53 induced Bax upregulation in ODN-treated cells. p53 functional domain analysis showed that the C-terminal domain of p53 participates in the physical interaction and stabilization of Sp1, a major transcription factor of Bax. We screened a specific siRNA encoding 50 deubiquitinases and identified that BAP1 stabilizes Sp1. The knockdown or catalytic mutant form of BAP1 abolished the ODN-induced upregulation of Sp1 and Bax expression. Mechanistically, ODN induced BAP1 phosphorylation and enhanced Sp1-BAP1 interaction, resulting in Sp1 ubiquitination and degradation. Interestingly, ODN-induced BAP1 phosphorylation and DNA damage were modulated by the production of mitochondrial reactive oxygen species (ROS). Mitochondrial ROS scavengers prevented DNA damage, BAP1-mediated Sp1 stabilization, and Bax upregulation by ODN. BAP1 downregulation by siRNA inhibited apoptosis induced by the combined treatment of ODN and oxaliplatin/etoposide. Therefore, Sp1 is a crucial transcription factor for ODN-induced Bax upregulation, and Sp1 stabilization is regulated by BAP1. Odanacatib (ODN) enhances oxaliplatin-induced apoptosis by upregulating Bax. ODN-mediated Bax upregulation is independent of p53 transcriptional activity. C-terminal domain of p53 induces Sp1 stabilization linked to BAP1 phosphorylation. ODN-mediated mitochondrial ROS generation causes BAP1 phosphorylation and DNA damage.
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Affiliation(s)
- Seung Un Seo
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea
| | - Seon Min Woo
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea
| | - Seul Gi Lee
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea
| | - Min Yeong Kim
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan, 47227, South Korea
| | - Hyun Shik Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, College of Natural Sciences, Kyungpook National University, Daegu, 41566, South Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan, 47227, South Korea
| | - Sang Hyun Kim
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu, 42472, South Korea
| | - Kyoung-Jin Min
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, 41061, South Korea
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Daegu, 42601, South Korea; Center for Forensic Pharmaceutical Science, Keimyung University, Daegu, 42601, South Korea.
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24
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Centonze G, Natalini D, Piccolantonio A, Salemme V, Morellato A, Arina P, Riganti C, Defilippi P. Cholesterol and Its Derivatives: Multifaceted Players in Breast Cancer Progression. Front Oncol 2022; 12:906670. [PMID: 35719918 PMCID: PMC9204587 DOI: 10.3389/fonc.2022.906670] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/15/2022] [Indexed: 11/13/2022] Open
Abstract
Cholesterol is an essential lipid primarily synthesized in the liver through the mevalonate pathway. Besides being a precursor of steroid hormones, bile acid, and vitamin D, it is an essential structural component of cell membranes, is enriched in membrane lipid rafts, and plays a key role in intracellular signal transduction. The lipid homeostasis is finely regulated end appears to be impaired in several types of tumors, including breast cancer. In this review, we will analyse the multifaceted roles of cholesterol and its derivatives in breast cancer progression. As an example of the bivalent role of cholesterol in the cell membrane of cancer cells, on the one hand, it reduces membrane fluidity, which has been associated with a more aggressive tumor phenotype in terms of cell motility and migration, leading to metastasis formation. On the other hand, it makes the membrane less permeable to small water-soluble molecules that would otherwise freely cross, resulting in a loss of chemotherapeutics permeability. Regarding cholesterol derivatives, a lower vitamin D is associated with an increased risk of breast cancer, while steroid hormones, coupled with the overexpression of their receptors, play a crucial role in breast cancer progression. Despite the role of cholesterol and derivatives molecules in breast cancer development is still controversial, the use of cholesterol targeting drugs like statins and zoledronic acid appears as a challenging promising tool for breast cancer treatment.
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Affiliation(s)
- Giorgia Centonze
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
| | - Dora Natalini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
| | - Alessio Piccolantonio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
| | - Vincenzo Salemme
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
| | - Alessandro Morellato
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
| | - Pietro Arina
- University College London (UCL), Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London, United Kingdom
| | - Chiara Riganti
- Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy.,Department of Oncology, University of Torino, Torino, Italy
| | - Paola Defilippi
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Interdepartmental Center of Research in Molecular Biotechnology, University of Torino, Torino, Italy
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25
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Han T, Tong J, Wang M, Gan Y, Gao B, Chen J, Liu Y, Hao Q, Zhou X. Olaparib Induces RPL5/RPL11-Dependent p53 Activation via Nucleolar Stress. Front Oncol 2022; 12:821366. [PMID: 35719981 PMCID: PMC9204002 DOI: 10.3389/fonc.2022.821366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/11/2022] [Indexed: 11/25/2022] Open
Abstract
The poly (ADP-ribose) polymerase (PARP) inhibitor (PARPi) Olaparib is a widely used targeted therapy for a variety of solid tumors with homologous recombination deficiency (HRD) caused by mutation of BRCA1/2 or other DNA repair genes. The anti-tumor activity of Olaparib has been largely attributed to its ability to inhibit PARP enzymes and block DNA single-strand break (SSB) repair, which eventually leads to the most detrimental DNA damage, double-strand breaks (DSB), in HRD cells. Although PARPi was found to induce p53-dependent cell death, the underlying molecular mechanism remains incompletely understood. Here, we report that Olaparib treatment leads to p53 stabilization and activation of its downstream target genes in a dose- and time-dependent manner. Mechanistically, Olaparib triggers nucleolar stress by inhibiting biosynthesis of the precursor of ribosomal RNAs (pre-rRNA), resulting in enhanced interaction between ribosomal proteins (RPs), RPL5 and RPL11, and MDM2. Consistently, knockdown of RPL5 and RPL11 prevents Olaparib-induced p53 activation. More importantly, Olaparib efficiently suppresses breast and colorectal cancer cell survival and proliferation through activation of p53. Altogether, our study demonstrates that Olaparib activates the nucleolar stress-RPs-p53 pathway, suggesting rRNA biogenesis as a novel target for PARPi.
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Affiliation(s)
- Tao Han
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Jing Tong
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Mengxin Wang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Yu Gan
- Department of Physiology, Medical College of Nanchang University, Nanchang, China
| | - Bo Gao
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Jiaxiang Chen
- Department of Physiology, Medical College of Nanchang University, Nanchang, China
| | - Youxun Liu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Qian Hao
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiang Zhou
- Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.,Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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Maleki Dana P, Sadoughi F, Mirzaei H, Asemi Z, Yousefi B. DNA damage response and repair in the development and treatment of brain tumors. Eur J Pharmacol 2022; 924:174957. [DOI: 10.1016/j.ejphar.2022.174957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 04/03/2022] [Accepted: 04/11/2022] [Indexed: 11/03/2022]
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Schaefer‐Ramadan S, Aleksic J, Al‐Thani NM, Malek JA. Novel protein contact points among TP53 and minichromosome maintenance complex proteins 2, 3, and 5. Cancer Med 2022; 11:4989-5000. [PMID: 35567389 PMCID: PMC9761056 DOI: 10.1002/cam4.4805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 04/11/2022] [Accepted: 04/26/2022] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVE Identify protein contact points between TP53 and minichromosome maintenance (MCM) complex proteins 2, 3, and 5 with high resolution allowing for potential novel Cancer drug design. METHODS A next-generation sequencing-based protein-protein interaction method developed in our laboratory called AVA-Seq was applied to a gold-standard human protein interaction set. Proteins including TP53, MCM2, MCM3, MCM5, HSP90AA1, PCNA, NOD1, and others were sheared and ligated into the AVA-Seq system. Protein-protein interactions were then identified in both mild and stringent selective conditions. RESULTS Known interactions among MCM2, MCM3, and MCM5 were identified with the AVA-Seq system. The interacting regions detected between these three proteins overlap with the structural data of the MCM complex, and novel domains were identified with high resolution determined by multiple overlapping fragments. Fragments of wild type TP53 were shown to interact with MCM2, MCM3, and MCM5, and details on the location of the interactions were provided. Finally, a mini-network of known and novel cancer protein interactions was provided, which could have implications for fundamental changes in multiple cancers. CONCLUSION We provide a high-resolution mini-interactome that could direct novel drug targets and implicate possible effects of specific cancer mutations.
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Affiliation(s)
| | - Jovana Aleksic
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
| | - Nayra M. Al‐Thani
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
| | - Joel A. Malek
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
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Cross-talk between mutant p53 and p62/SQSTM1 augments cancer cell migration by promoting the degradation of cell adhesion proteins. Proc Natl Acad Sci U S A 2022; 119:e2119644119. [PMID: 35439056 PMCID: PMC9173583 DOI: 10.1073/pnas.2119644119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Missense mutations in the TP53 gene, encoding the p53 tumor suppressor, are very frequent in human cancer. Some of those mutations, particularly the more common (“hotspot”) ones, not only abrogate p53’s tumor suppressor activities but also endow the mutant protein with oncogenic gain of function (GOF). We report that p53R273H, the most common p53 mutant in pancreatic cancer, interacts with the SQSTM1/p62 protein to accelerate the degradation of cell adhesion proteins. This enables pancreatic cancer cells to detach from the epithelial sheet and engage in individualized cell migration, probably augmenting metastatic spread. By providing insights into mechanisms that underpin mutant p53 GOF, this study may suggest ways to interfere with the progression of cancers bearing particular p53 mutants. Missense mutations in the p53 tumor suppressor abound in human cancer. Common (“hotspot”) mutations endow mutant p53 (mutp53) proteins with oncogenic gain of function (GOF), including enhanced cell migration and invasiveness, favoring cancer progression. GOF is usually attributed to transcriptional effects of mutp53. To elucidate transcription-independent effects of mutp53, we characterized the protein interactome of the p53R273H mutant in cells derived from pancreatic ductal adenocarcinoma (PDAC), where p53R273H is the most frequent p53 mutant. We now report that p53R273H, but not the p53R175H hotspot mutant, interacts with SQSTM1/p62 and promotes cancer cell migration and invasion in a p62-dependent manner. Mechanistically, the p53R273H-p62 axis drives the proteasomal degradation of several cell junction–associated proteins, including the gap junction protein Connexin 43, facilitating scattered cell migration. Concordantly, down-regulation of Connexin 43 augments PDAC cell migration, while its forced overexpression blunts the promigratory effect of the p53R273H-p62 axis. These findings define a mechanism of mutp53 GOF.
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Jin TY, Park KS, Nam SE, Yoo YB, Park WS, Yun IJ. BRCA1/2 Serves as a Biomarker for Poor Prognosis in Breast Carcinoma. Int J Mol Sci 2022; 23:ijms23073754. [PMID: 35409110 PMCID: PMC8998777 DOI: 10.3390/ijms23073754] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 11/16/2022] Open
Abstract
BRCA1/2 are breast cancer susceptibility genes that are involved in DNA repair and transcriptional control. They are dysregulated in breast cancer, making them attractive therapeutic targets. Here, we performed a systematic multiomics analysis to expound BRCA1/2 functions as prognostic biomarkers in breast cancer. First, using different web-based bioinformatics platforms (Oncomine, TIMER 2.0, UALCAN, and cBioportal), the expression of BRCA1/2 was assessed. Then, the R package was used to analyze the diagnostic value of BRCA1/2 in patients. Next, we determined the relationship between BRCA1/2 mRNA expression and prognosis in patients (PrognoScan Database, R2: Kaplan Meier Scanner and Kaplan−Meier Plotter). Subsequently, the association of BRCA1/2 with mutation frequency alteration and copy number alterations in breast cancer was investigated using the cBioportal platform. After that, we identified known and predicted structural genes and proteins essential for BRCA1/2 functions using GeneMania and STRING db. Finally, GO and KEGG pathway enrichment analyses were performed to elucidate the potential biological functions of the co-expression genes of BRCA1/2. The BRCA1/2 mRNA level in breast cancer tissues was considerably higher than in normal tissues, with AUCs of 0.766 and 0.829, respectively. Overexpression of BRCA1/2 was significantly related to the worse overall survival (p < 0.001) and was correlated to clinicopathological characteristics including lymph nodes, estrogen receptors, and progesterone receptors (p < 0.01). The alteration frequencies of both the gens have been checked, and the results show that BRCA1 and BRCA2 show different alteration frequencies. Their mutation sites differ from each other. GO and KEGG showed that BRCA1/2 was mainly enriched in catalytic activity, acting on DNA, chromosomal region, organelle fission, cell cycle, etc. The 20 most frequently changed genes were closely related to BRCA1/2, including PALB2 and RAD51 relatively. Our study provides suggestive evidence of the prognostic role of BRCA1/2 in breast cancer and the therapeutic target for breast cancer. Furthermore, BRCA1/2 may influence BRCA prognosis through catalytic activity, acting on DNA, chromosomal regions, organelle fission, and the cell cycle. Nevertheless, further validation is warranted.
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Affiliation(s)
- Tong Yi Jin
- Department of Surgery, Konkuk University School of Medicine, Seoul 05030, Korea; (T.Y.J.); (S.E.N.); (Y.B.Y.); (I.J.Y.)
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea
| | - Kyoung Sik Park
- Department of Surgery, Konkuk University School of Medicine, Seoul 05030, Korea; (T.Y.J.); (S.E.N.); (Y.B.Y.); (I.J.Y.)
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea
- Department of Surgery, Konkuk University Medical Center, Seoul 05030, Korea
- Correspondence:
| | - Sang Eun Nam
- Department of Surgery, Konkuk University School of Medicine, Seoul 05030, Korea; (T.Y.J.); (S.E.N.); (Y.B.Y.); (I.J.Y.)
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea
- Department of Surgery, Konkuk University Medical Center, Seoul 05030, Korea
| | - Young Bum Yoo
- Department of Surgery, Konkuk University School of Medicine, Seoul 05030, Korea; (T.Y.J.); (S.E.N.); (Y.B.Y.); (I.J.Y.)
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea
- Department of Surgery, Konkuk University Medical Center, Seoul 05030, Korea
| | - Won Seo Park
- Department of Surgery, Kyung Hee University School of Medicine, Seoul 02447, Korea;
| | - Ik Jin Yun
- Department of Surgery, Konkuk University School of Medicine, Seoul 05030, Korea; (T.Y.J.); (S.E.N.); (Y.B.Y.); (I.J.Y.)
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea
- Department of Surgery, Konkuk University Medical Center, Seoul 05030, Korea
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Hao Q, Zhou X. The emerging role of long noncoding RNA RMRP in cancer development and targeted therapy. Cancer Biol Med 2022; 19:j.issn.2095-3941.2021.0577. [PMID: 35075888 PMCID: PMC8832963 DOI: 10.20892/j.issn.2095-3941.2021.0577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 11/26/2021] [Indexed: 11/11/2022] Open
Affiliation(s)
- Qian Hao
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiang Zhou
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai 200032, China
- Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
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Sankaranarayanan RA, Peil J, Vogg ATJ, Bolm C, Terhorst S, Classen A, Bauwens M, Maurer J, Mottaghy F, Morgenroth A. Auger Emitter Conjugated PARP Inhibitor for Therapy in Triple Negative Breast Cancers: A Comparative In-Vitro Study. Cancers (Basel) 2022; 14:cancers14010230. [PMID: 35008392 PMCID: PMC8750932 DOI: 10.3390/cancers14010230] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/20/2021] [Accepted: 12/30/2021] [Indexed: 01/27/2023] Open
Abstract
Simple Summary Triple negative breast cancer (TNBC) is an aggressive subtype of breast cancer, with a high recurrence rate. Since treatment of BRCAmut TNBC patients with PARP inhibitor (PARPi), targeting the nuclear protein PARP1, shows varied responses, its therapeutic efficacy is currently evaluated in combination with chemotherapy. Auger emitters (AEs) are radionuclides that can cause DNA damage when delivered close to the DNA. Due to the nuclear location of PARP1, radiolabelling of PARPi with AEs provide an efficient nuclear delivery mechanism. This study shows the radiosynthesis of an AE radiolabelled PARPi ([125I]-PARPi-01) and its therapeutic effect as monotherapy or in combination with chemotherapeutics in a panel of TNBC cell lines. We found that [125I]-PARPi-01 efficiently induces DNA damage with therapeutic effect irrespective of BRCA mutation. All responsive cell lines have homologous recombination deficiency. Short pretreatment with doxorubicin significantly reduces clonogenic survival of both responsive and resistant cell lines. Abstract PARP1 inhibitors (PARPi) are currently approved for BRCAmut metastatic breast cancer, but they have shown limited response in triple negative breast cancer (TNBC) patients. Combination of an Auger emitter with PARPis enables PARP inhibition and DNA strand break induction simultaneously. This will enhance cytotoxicity and additionally allow a theranostic approach. This study presents the radiosynthesis of the Auger emitter [125I] coupled olaparib derivative: [125I]-PARPi-01, and its therapeutic evaluation in a panel of TNBC cell lines. Specificity was tested by a blocking assay. DNA strand break induction was analysed by γH2AX immunofluorescence staining. Cell cycle analysis and apoptosis assays were studied using flow cytometry in TNBC cell lines (BRCAwt/mut). Anchorage independent growth potential was evaluated using soft agar assay. [125I]-PARPi-01 showed PARP1-specificity and higher cytotoxicity than olaparib in TNBC cell lines irrespective of BRCA their status. Cell lines harbouring DNA repair deficiency showed response to [125I]-PARPi-01 monotherapy. Combined treatment with Dox-NP further enhanced therapeutic efficiency in metastatic resistant BRCAwt cell lines. The clonogenic survival was significantly reduced after treatment with [125I]-PARPi-01 in all TNBC lines investigated. Therapeutic efficacy was further enhanced after combined treatment with chemotherapeutics. [125I]-PARPi-01 is a promising radiotherapeutic agent for low radiation dosages, and mono/combined therapies of TNBC.
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Affiliation(s)
- Ramya Ambur Sankaranarayanan
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
| | - Jennifer Peil
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
| | - Andreas T. J. Vogg
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (C.B.); (S.T.); (A.C.)
| | - Steven Terhorst
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (C.B.); (S.T.); (A.C.)
| | - Arno Classen
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (C.B.); (S.T.); (A.C.)
| | - Matthias Bauwens
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), 6229HX Maastricht, The Netherlands
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6229HX Maastricht, The Netherlands
| | - Jochen Maurer
- Department of Molecular Gynecology, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany;
| | - Felix Mottaghy
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), 6229HX Maastricht, The Netherlands
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, 52074 Aachen, Germany; (R.A.S.); (J.P.); (A.T.J.V.); (M.B.); (F.M.)
- Correspondence:
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Annor GK, Elshabassy N, Lundine D, Conde DG, Xiao G, Ellison V, Bargonetti J. Oligomerization of Mutant p53 R273H is not Required for Gain-of-Function Chromatin Associated Activities. Front Cell Dev Biol 2021; 9:772315. [PMID: 34881245 PMCID: PMC8645790 DOI: 10.3389/fcell.2021.772315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/28/2021] [Indexed: 01/11/2023] Open
Abstract
The TP53 gene is often mutated in cancer, with missense mutations found in the central DNA binding domain, and less often in the C-terminal oligomerization domain (OD). These types of mutations are found in patients with the rare inherited cancer predisposition disorder called Li-Fraumeni syndrome. We previously found that mutant p53 (mtp53) R273H associates with replicating DNA and promotes the chromatin association of replication-associated proteins mini-chromosome maintenance 2 (MCM2), and poly ADP-ribose polymerase 1(PARP1). Herein, we created dual mutants in order to test if the oligomerization state of mtp53 R273H played a role in chromatin binding oncogenic gain-of-function (GOF) activities. We used site-directed mutagenesis to introduce point mutations in the OD in wild-type p53 (wtp53), and mtp53 R273H expressing plasmids. The glutaraldehyde crosslinking assay revealed that both wtp53 and mtp53 R273H formed predominantly tetramers, while the single OD mutant A347D, and the dual mtp53 R273H-A347D, formed predominantly dimers. The R337C, L344P, mtp53 R273H-R337C, and mtp53 R273H-L344P proteins formed predominantly monomers. Wtp53 was able to activate the cyclin-dependent kinase gene p21/waf and the p53 feedback regulator MDM2. As expected, the transactivation activity was lost for all the single mutants, as well as the mtp53 R273H-dual mutants. Importantly, mtp53 R273H and the dual oligomerization mutants, R273H-A347D, R273H-R337C, and R273H-L344P were able to interact with chromatin. Additionally, the dual oligomerization mutants, R273H-A347D, R273H-R337C, and R273H-L344P, maintained strong interactions with MCM2 and PARP1. Our findings suggest that while mtp53 R273H can form tetramers, tetramer formation is not required for the GOF associated chromatin interactions.
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Affiliation(s)
- George K Annor
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States
| | - Nour Elshabassy
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Devon Lundine
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States
| | - Don-Gerard Conde
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Gu Xiao
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Viola Ellison
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States
| | - Jill Bargonetti
- The Department of Biological Sciences Hunter College, Belfer Research Building, City University of New York, New York, NY, United States.,The Graduate Center Biology and Biochemistry Programs of City University of New York, New York, NY, United States.,Department of Cell and Developmental Biology, Weill Cornell Medical College, New York City, NY, United States
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Gao X, Zhao N, Dong L, Zheng X, Zhang Y, Ding C, Zhao S, Ma Z, Wang Y. A Novel Lipid Prognostic Signature of ADCY2, LIPE, and OLR1 in Head and Neck Squamous Cell Carcinoma. Front Oncol 2021; 11:735993. [PMID: 34900686 PMCID: PMC8655234 DOI: 10.3389/fonc.2021.735993] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 11/03/2021] [Indexed: 12/24/2022] Open
Abstract
SIMPLE SUMMARY Clinically, aberrant lipid metabolism is responsible for overweight and/or obesity. Overweight is considered as an independent factor of cancer risk in 2019. Therefore, lipid metabolic reprogramming is an emerging hallmark of malignancy. It is an urgent need to comprehensively understand the relationship among lipid metabolism and HNSCC and identify a valuable biomarker for predicting prognosis of HNSCC patients. Three new findings were found in this study. Firstly, we identified the lipid-related differentially expressed genes (DEGs) by using the GEO microarrays and TCGA dataset. A novel lipid-related mRNA prognostic signature (LRPS, consisting of ADCY2, LIPE and OLR1) was developed, which could predict the survival and prognosis of HNSCC patients as an independent effective prognostic factor. Secondly, we found that the LRPS could indicate the type of infiltrated immune cells in HNSCC tumor microenvironment. Thirdly, we verified that the LPPS score could interpret the TP53 status of HNSCC. Our new findings indicated that LRPS has a potential to be a promising indicator of overall survival, TP53 status, and immune characteristics in HNSCC, and perhaps can monitor and guide the treatment efficacy and prognosis of HNSCC in the future. BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is characterized by a high frequency of lymph node metastasis and a high mortality. Lipid metabolic reprogramming is an emerging carcinogen as its role in fulfilling cancer growth and spread. However, little is known about the correlation between lipid metabolism and HNSCC. MATERIALS AND METHODS Expressions of lipid-related genes were obtained from the Cancer Genome Atlas (TCGA) and Gene expression Omnibus (GEO) databases for differential and functional analyses. A total number of 498 patients from TCGA with complete information were included to identify a lipid-related prognostic signature (LRPS), based on ADCY2, LIPE, and OLR1, by using univariate and multivariate Cox regression analyses. LRPS-high and LRPS-low groups were accordingly divided to pathway and cell enrichment analyses. RESULTS LRS-low patients had a better overall survival and relapse - free survival than LRS-high ones in HNSCC. The LRPS-high group was significantly related to perineural invasion of cancer, cancer-related pathways, high TP53 mutation rate, high proportion of natural killer T cells (NKT), dendritic cells, monocytes, Treg, and M1 and M2 macrophage infiltration in HNSCC tumor tissues. Conversely, the LRPS-low group correlated with DNA damage-related and T-cell-regulated pathways, low frequency of mutated TP53, and high infiltration of B cells and CD4+ effector cells including Th1 and Th2. CONCLUSION LRPS has a potential to be a promising indicator of overall survival, prognosis, TP53 status, and immune characteristics in HNSCC.
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Affiliation(s)
- Xiaolei Gao
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
- Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Na Zhao
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA, United States
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Liying Dong
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuan Zheng
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yixin Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Chong Ding
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Shuyan Zhao
- The Fifth Clinical Division, Peking University School and Hospital of Stomatology, Beijing, China
| | - Zeyun Ma
- Department of VIP Service, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yixiang Wang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
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Romeo MA, Gilardini Montani MS, Benedetti R, Arena A, Maretto M, Bassetti E, Caiazzo R, D'Orazi G, Cirone M. Anticancer effect of AZD2461 PARP inhibitor against colon cancer cells carrying wt or dysfunctional p53. Exp Cell Res 2021; 408:112879. [PMID: 34653407 DOI: 10.1016/j.yexcr.2021.112879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
Colon cancer is one of the most common cancers, currently treated with traditional chemotherapies or alternative therapies. However, these treatments are still not enough effective and induce several side effects, so that the search of new therapeutic strategies is needed. The use of Poly-(ADP-ribose)-polymerase (PARP) inhibitors, although originally approved against BRCA-1 or BRCA-2 mutated cancers, has been extended, particularly in combination with other treatments, to cure cancers that do not display defects in DNA repair signaling pathways. The role of p53 oncosuppressor in the regulating the outcome of PARP inhibitor treatment remains an open issue. In this study, we addressed this topic by using a well-tolerated PARP 1/2/3 inhibitor, namely AZD2461, against colon cancer cell lines with different p53 status. We found that AZD2461 reduced cell proliferation in wtp53 and p53-/- cancer cells by increasing ROS and DNA damage, while R273H mutant (mut) p53 counteracted these effects. Moreover, AZD2461 improved the reduction of cell proliferation by low dose radiation (IR) in wtp53 cancer cells, in which a down-regulation of BRCA-1 occurred. AZD2461 did not affect cell proliferation of mutp53 colon cancer cells also in combination with low dose radiation, suggesting that only wt p53 or p53 null colon cancer cells could benefit AZD2461 treatment.
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Affiliation(s)
- Maria Anele Romeo
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy
| | - Maria Saveria Gilardini Montani
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy
| | - Rossella Benedetti
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy
| | - Andrea Arena
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy
| | - Mara Maretto
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy
| | - Erica Bassetti
- Department of Radiological, Oncological and Pathological Sciences, "Sapienza" University of Rome, Rome, Italy
| | - Rossella Caiazzo
- Department of Radiotherapy, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Gabriella D'Orazi
- Department of Neurosciences, Imaging and Clinical Sciences, University "G. D'Annunzio" Chieti, Italy; Department of Research and Technological Innovation, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Mara Cirone
- Department of Experimental Medicine, "Sapienza" University of Rome, Italy. Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Italy.
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Zhang C, Liu J, Xu D, Zhang T, Hu W, Feng Z. Gain-of-function mutant p53 in cancer progression and therapy. J Mol Cell Biol 2021; 12:674-687. [PMID: 32722796 PMCID: PMC7749743 DOI: 10.1093/jmcb/mjaa040] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/28/2020] [Accepted: 07/08/2020] [Indexed: 12/21/2022] Open
Abstract
p53 is a key tumor suppressor, and loss of p53 function is frequently a prerequisite for cancer development. The p53 gene is the most frequently mutated gene in human cancers; p53 mutations occur in >50% of all human cancers and in almost every type of human cancers. Most of p53 mutations in cancers are missense mutations, which produce the full-length mutant p53 (mutp53) protein with only one amino acid difference from wild-type p53 protein. In addition to loss of the tumor-suppressive function of wild-type p53, many mutp53 proteins acquire new oncogenic activities independently of wild-type p53 to promote cancer progression, termed gain-of-function (GOF). Mutp53 protein often accumulates to very high levels in cancer cells, which is critical for its GOF. Given the high mutation frequency of the p53 gene and the GOF activities of mutp53 in cancer, therapies targeting mutp53 have attracted great interest. Further understanding the mechanisms underlying mutp53 protein accumulation and GOF will help develop effective therapies treating human cancers containing mutp53. In this review, we summarize the recent advances in the studies on mutp53 regulation and GOF as well as therapies targeting mutp53 in human cancers.
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Affiliation(s)
- Cen Zhang
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Juan Liu
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Dandan Xu
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Tianliang Zhang
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Wenwei Hu
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Zhaohui Feng
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers-State University of New Jersey, New Brunswick, NJ 08903, USA
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Hao Q, Lu H, Zhou X. A potential synthetic lethal strategy with PARP inhibitors: perspective on 'Inactivation of the tumor suppressor p53 by long noncoding RNA RMRP'. J Mol Cell Biol 2021; 13:690-692. [PMID: 34375408 PMCID: PMC8648391 DOI: 10.1093/jmcb/mjab049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 11/20/2022] Open
Affiliation(s)
- Qian Hao
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Hua Lu
- Department of Biochemistry & Molecular Biology and Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Xiang Zhou
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China.,Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai 200032, China.,Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
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Kuo KK, Hsiao PJ, Chang WT, Chuang SC, Yang YH, Wuputra K, Ku CC, Pan JB, Li CP, Kato K, Liu CJ, Wu DC, Yokoyama KK. Therapeutic Strategies Targeting Tumor Suppressor Genes in Pancreatic Cancer. Cancers (Basel) 2021; 13:3920. [PMID: 34359820 PMCID: PMC8345812 DOI: 10.3390/cancers13153920] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 12/11/2022] Open
Abstract
The high mortality of pancreatic cancer is attributed to the insidious progression of this disease, which results in a delayed diagnosis and advanced disease stage at diagnosis. More than 35% of patients with pancreatic cancer are in stage III, whereas 50% are in stage IV at diagnosis. Thus, understanding the aggressive features of pancreatic cancer will contribute to the resolution of problems, such as its early recurrence, metastasis, and resistance to chemotherapy and radiotherapy. Therefore, new therapeutic strategies targeting tumor suppressor gene products may help prevent the progression of pancreatic cancer. In this review, we discuss several recent clinical trials of pancreatic cancer and recent studies reporting safe and effective treatment modalities for patients with advanced pancreatic cancer.
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Affiliation(s)
- Kung-Kai Kuo
- Division of General & Digestive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (K.-K.K.); (W.-T.C.); (S.-C.C.); (Y.-H.Y.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Pi-Jung Hsiao
- Department of Internal Medicine, Division of Endocrinology and Metabolism, EDA Hospital, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan;
| | - Wen-Tsan Chang
- Division of General & Digestive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (K.-K.K.); (W.-T.C.); (S.-C.C.); (Y.-H.Y.)
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Shih-Chang Chuang
- Division of General & Digestive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (K.-K.K.); (W.-T.C.); (S.-C.C.); (Y.-H.Y.)
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ya-Han Yang
- Division of General & Digestive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (K.-K.K.); (W.-T.C.); (S.-C.C.); (Y.-H.Y.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Department of Surgery, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Kenly Wuputra
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chia-Chen Ku
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jia-Bin Pan
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chia-Pei Li
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Kohsuke Kato
- Department of Infection Biology, Graduate School of Comprehensive Human Sciences, the University of Tsukuba, Tsukuba 305-8577, Japan;
| | - Chung-Jung Liu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Cell Therapy and Research Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Deng-Chyang Wu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Cell Therapy and Research Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Kazunari K. Yokoyama
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.W.); (C.-C.K.); (J.-B.P.); (C.-P.L.); (C.-J.L.); (D.-C.W.)
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Cell Therapy and Research Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
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Ellison V, Annor GK, Freedman C, Xiao G, Lundine D, Freulich E, Prives C, Bargonetti J. Frame-shift mediated reduction of gain-of-function p53 R273H and deletion of the R273H C-terminus in breast cancer cells result in replication-stress sensitivity. Oncotarget 2021; 12:1128-1146. [PMID: 34136083 PMCID: PMC8202772 DOI: 10.18632/oncotarget.27975] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/15/2021] [Indexed: 11/25/2022] Open
Abstract
We recently documented that gain-of-function (GOF) mutant p53 (mtp53) R273H in triple negative breast cancer (TNBC) cells interacts with replicating DNA and PARP1. The missense R273H GOF mtp53 has a mutated central DNA binding domain that renders it unable to bind specifically to DNA, but maintains the capacity to interact tightly with chromatin. Both the C-terminal domain (CTD) and oligomerization domain (OD) of GOF mtp53 proteins are intact and it is unclear whether these regions of mtp53 are responsible for chromatin-based DNA replication activities. We generated MDA-MB-468 cells with CRISPR-Cas9 edited versions of the CTD and OD regions of mtp53 R273H. These included a frame-shift mtp53 R273Hfs387, which depleted mtp53 protein expression; mtp53 R273HΔ381-388, which had a small deletion within the CTD; and mtp53 R273HΔ347-393, which had both the OD and CTD regions truncated. The mtp53 R273HΔ347-393 existed exclusively as monomers and disrupted the chromatin interaction of mtp53 R273H. The CRISPR variants proliferated more slowly than the parental cells and mt53 R273Hfs387 showed the most extreme phenotype. We uncovered that after thymidine-induced G1/S synchronization, but not hydroxyurea or aphidicholin, R273Hfs387 cells displayed impairment of S-phase progression while both R273HΔ347-393 and R273HΔ381-388 displayed only moderate impairment. Moreover, reduced chromatin interaction of MCM2 and PCNA in mtp53 depleted R273Hfs387 cells post thymidine-synchronization revealed delayed kinetics of replisome assembly underscoring the slow S-phase progression. Taken together our findings show that the CTD and OD domains of mtp53 R273H play critical roles in mutant p53 GOF that pertain to processes associated with DNA replication.
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Affiliation(s)
- Viola Ellison
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
| | - George K. Annor
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
- The Graduate Center Biology and Biochemistry Programs, City University of New York, New York, NY, USA
| | - Clara Freedman
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
| | - Gu Xiao
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
| | - Devon Lundine
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
- The Graduate Center Biology and Biochemistry Programs, City University of New York, New York, NY, USA
| | - Elzbieta Freulich
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Carol Prives
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Jill Bargonetti
- The Department of Biological Sciences, Hunter College, City University of New York, New York, NY, USA
- The Graduate Center Biology and Biochemistry Programs, City University of New York, New York, NY, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY, USA
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Li H, Liu J, Lai Y, Huang S, Zheng L, Fan N. LINC01559 promotes colorectal cancer via sponging miR-1343-3p to modulate PARP1/PTEN/AKT pathway. Pathol Res Pract 2021; 224:153521. [PMID: 34329839 DOI: 10.1016/j.prp.2021.153521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 06/03/2021] [Accepted: 06/06/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) is considered as one of the commonest tumors and is the major reason of cancer-related deaths around the world. Plentiful evidences have validated that long non-coding RNAs (lncRNAs) play a significant part in various cancers, including CRC. LINC01559 is implicated in the development of various cancers. However, the detailed function of LINC01559 in CRC has not been illustrated. METHODS LINC01559 expression was examined via RT-qPCR, and a series of functional experiments were conducted to explore the role of LINC01559 in CRC progression. Mechanism experiments were carried out to examine the underlying mechanism of LINC01559. RESULTS LINC01559 expression was increased in CRC cells and tissues, and LINC01559 depletion restrained the biological behaviors of CRC cells. Also, LINC01559 sponged miR-1343-3p in CRC, and PARP1 was the target of miR-1343-3p. Besides, miR-1343-3p overexpression or PARP1 down-regulation affected the biological behaviors of CRC cells. In addition, up-regulation of PARP1 or adding SC79 (AKT pathway activator) could remedy the repressive effects of LINC01559 silencing on CRC cell biological behaviors. CONCLUSIONS LINC01559 promotes CRC through sponging miR-1343-3p to modulate PARP1/PTEN/AKT pathway, which may be conducive to offering a new idea for CRC therapeutic treatment.
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Affiliation(s)
- Hui Li
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China
| | - Jie Liu
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China
| | - Yiqin Lai
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China
| | - Sha Huang
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China
| | - Liang Zheng
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China
| | - Nanfen Fan
- Fujian Cancer Hospital & Institute, No 420 Fuma Road, Fuzhou, Fujian, 350014, China.
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Sadoughi F, Maleki Dana P, Asemi Z, Yousefi B. DNA damage response and repair in osteosarcoma: Defects, regulation and therapeutic implications. DNA Repair (Amst) 2021; 102:103105. [PMID: 33836418 DOI: 10.1016/j.dnarep.2021.103105] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/20/2021] [Indexed: 01/03/2023]
Abstract
Osteosarcoma (OS) is the most common primary bone malignancy in children and adolescents which has the survival rate of 20% in its advanced stages. Osteosarcomas are mostly resistance to our common treatments. DNA damage response (DDR) is a specialized multistep process containing abundant proteins which are necessary for the survival of any cell and organism. DDR machinery detects a diversity of DNA lesions and inhibits the cell cycle progression if these lesions are not repairable. DDR is involved in aging, age-related diseases, and cancer. In recent years, DDR inhibitors have gained the attention of researches due to their potentials in offering novel therapeutic targets and improving the response of many cancers to either chemo- or radio-therapy. In this regard, we tried to gather a great body of evidence about the role of DDR ingredients in osteosarcoma's initiation/progression, prognosis, and treatment.
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Affiliation(s)
- Fatemeh Sadoughi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Parisa Maleki Dana
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Yip HYK, Papa A. Signaling Pathways in Cancer: Therapeutic Targets, Combinatorial Treatments, and New Developments. Cells 2021; 10:659. [PMID: 33809714 PMCID: PMC8002322 DOI: 10.3390/cells10030659] [Citation(s) in RCA: 203] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/12/2021] [Accepted: 03/13/2021] [Indexed: 12/13/2022] Open
Abstract
Molecular alterations in cancer genes and associated signaling pathways are used to inform new treatments for precision medicine in cancer. Small molecule inhibitors and monoclonal antibodies directed at relevant cancer-related proteins have been instrumental in delivering successful treatments of some blood malignancies (e.g., imatinib with chronic myelogenous leukemia (CML)) and solid tumors (e.g., tamoxifen with ER positive breast cancer and trastuzumab for HER2-positive breast cancer). However, inherent limitations such as drug toxicity, as well as acquisition of de novo or acquired mechanisms of resistance, still cause treatment failure. Here we provide an up-to-date review of the successes and limitations of current targeted therapies for cancer treatment and highlight how recent technological advances have provided a new level of understanding of the molecular complexity underpinning resistance to cancer therapies. We also raise three basic questions concerning cancer drug discovery based on molecular markers and alterations of selected signaling pathways, and further discuss how combination therapies may become the preferable approach over monotherapy for cancer treatments. Finally, we consider novel therapeutic developments that may complement drug delivery and significantly improve clinical response and outcomes of cancer patients.
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Affiliation(s)
| | - Antonella Papa
- Cancer Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3800, Australia;
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Ghatak D, Das Ghosh D, Roychoudhury S. Cancer Stemness: p53 at the Wheel. Front Oncol 2021; 10:604124. [PMID: 33505918 PMCID: PMC7830093 DOI: 10.3389/fonc.2020.604124] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
The tumor suppressor p53 maintains an equilibrium between self-renewal and differentiation to sustain a limited repertoire of stem cells for proper development and maintenance of tissue homeostasis. Inactivation of p53 disrupts this balance and promotes pluripotency and somatic cell reprogramming. A few reports in recent years have indicated that prevalent TP53 oncogenic gain-of-function (GOF) mutations further boosts the stemness properties of cancer cells. In this review, we discuss the role of wild type p53 in regulating pluripotency of normal stem cells and various mechanisms that control the balance between self-renewal and differentiation in embryonic and adult stem cells. We also highlight how inactivating and GOF mutations in p53 stimulate stemness in cancer cells. Further, we have explored the various mechanisms of mutant p53-driven cancer stemness, particularly emphasizing on the non-coding RNA mediated epigenetic regulation. We have also analyzed the association of cancer stemness with other crucial gain-of-function properties of mutant p53 such as epithelial to mesenchymal transition phenotypes and chemoresistance to understand how activation of one affects the other. Given the critical role of cancer stem-like cells in tumor maintenance, cancer progression, and therapy resistance of mutant p53 tumors, targeting them might improve therapeutic efficacy in human cancers with TP53 mutations.
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Affiliation(s)
- Dishari Ghatak
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Damayanti Das Ghosh
- Division of Research, Saroj Gupta Cancer Centre and Research Institute, Kolkata, India
| | - Susanta Roychoudhury
- Division of Research, Saroj Gupta Cancer Centre and Research Institute, Kolkata, India
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Xiao G, Annor GK, Fung K, Keinänen O, Zeglis BM, Bargonetti J. Targeting Triple Negative Breast Cancer with a Nucleus-Directed p53 Tetramerization Domain Peptide. Mol Pharm 2021; 18:338-346. [PMID: 33289569 PMCID: PMC8068092 DOI: 10.1021/acs.molpharmaceut.0c00978] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Triple negative breast cancer (TNBC) has no targeted detection or treatment method. Mutant p53 (mtp53) is overexpressed in >80% of TNBCs, and the stability of mtp53 compared to the instability of wild-type p53 (wtp53) in normal cells makes mtp53 a promising TNBC target for diagnostic and theranostic imaging. We generated Cy5p53Tet, a novel nucleus-penetrating mtp53-oligomerization-domain peptide (mtp53ODP) to the tetramerization domain (TD) of mtp53. This mtp53ODP contains the p53 TD sequence conjugated to a Cy5 fluorophore for near-infrared fluorescence imaging (NIRF). In vitro co-immunoprecipitation and glutaraldehyde cross-linking showed a direct interaction between mtp53 and Cy5p53Tet. Confocal microscopy and flow cytometry demonstrated higher uptake of Cy5p53Tet in the nuclei of TNBC MDA-MB-468 cells with mtp53 R273H than in ER-positive MCF7 cells with wtp53. Furthermore, depletion of mtp53 R273H caused a decrease in the uptake of Cy5p53Tet in nuclei. In vivo analysis of the peptide in mice bearing MDA-MB-468 xenografts showed that Cy5p53Tet could be detected in tumor tissue 12 min after injection. In these in vivo experiments, significantly higher uptake of Cy5p53Tet was observed in mtp53-expressing MDA-MB-468 xenografts compared with the wtp53-expressing MCF7 tumors. Cy5p53Tet has clinical potential as an intraoperative imaging agent for fluorescence-guided surgery, and the mtp53ODP scaffold shows promise for modification in the future to enable the delivery of a wide variety of payloads including radionuclides and toxins to mtp53-expressing TNBC tumors.
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Affiliation(s)
- Gu Xiao
- Department of Biological Sciences Hunter College, City University of New York, New York, New York 10021, United States
| | - George K Annor
- Department of Biological Sciences Hunter College, City University of New York, New York, New York 10021, United States
- The Graduate Center Biochemistry PhD Program of City University of New York, New York, New York 10016, United States
| | - Kimberly Fung
- Department of Chemistry Hunter College of the City University of New York, New York, New York 10021, United States
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Outi Keinänen
- Department of Chemistry Hunter College of the City University of New York, New York, New York 10021, United States
| | - Brian M Zeglis
- Department of Chemistry Hunter College of the City University of New York, New York, New York 10021, United States
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York 10021, United States
| | - Jill Bargonetti
- Department of Biological Sciences Hunter College, City University of New York, New York, New York 10021, United States
- The Graduate Center Biochemistry PhD Program of City University of New York, New York, New York 10016, United States
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York 10021, United States
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