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Chai D, Wang X, Neeli P, Zhou S, Yu X, Sabapathy K, Li Y. DNA-delivered monoclonal antibodies targeting the p53 R175H mutant epitope inhibit tumor development in mice. Genes Dis 2024; 11:100994. [PMID: 38560504 PMCID: PMC10980946 DOI: 10.1016/j.gendis.2023.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 04/04/2024] Open
Abstract
The tumor suppressor p53 is the most common mutated gene in cancer, with the R175H as the most frequent p53 missense mutant. However, there are currently no approved targeted therapies or immunotherapies against mutant p53. Here, we characterized and investigated a monoclonal antibody (mAb) that recognizes the mutant p53-R175H for its affinity, specificity, and activity against tumor cells in vitro. We then delivered DNA plasmids expressing the anti-R175H mAb or a bispecific antibody (BsAb) into mice to evaluate their therapeutic effects. Our results showed that the anti-R175H mAb specifically bound to the p53-R175H antigen with a high affinity and recognized the human mutant p53-R175H antigen expressed on HEK293T or MC38 cells, with no cross-reactivity with wild-type p53. In cultured cells, the anti-R175H mAb showed higher cytotoxicity than the control but did not induce antibody-dependent cellular cytotoxicity. We made a recombinant MC38 mouse cell line (MC38-p53-R175H) that overexpressed the human p53-R175H after knocking out the endogenous mutant p53 alleles. In vivo, administration of the anti-R175H mAb plasmid elicited a robust anti-tumor effect against MC38-p53-R175H in mice. The administration of the anti-R175H BsAb plasmid showed no therapeutic effects, yet potent anti-tumor activity was observed in combination with the anti-PD-1 antibody. These results indicate that targeting specific mutant epitopes using DNA-delivered mAbs or BsAbs presents a form of improved natural immunity derived from tumor-infiltrating B cells and plasma cells against intracellular tumor antigens.
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Affiliation(s)
- Dafei Chai
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xu Wang
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Praveen Neeli
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Shan Zhou
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xingfang Yu
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Kanaga Sabapathy
- Division of Cellular & Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre Singapore, Singapore 168583, Singapore
| | - Yong Li
- Department of Medicine, Section of Epidemiology and Population Sciences, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
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Temaj G, Chichiarelli S, Telkoparan-Akillilar P, Saha S, Nuhii N, Hadziselimovic R, Saso L. P53: A key player in diverse cellular processes including nuclear stress and ribosome biogenesis, highlighting potential therapeutic compounds. Biochem Pharmacol 2024; 226:116332. [PMID: 38830426 DOI: 10.1016/j.bcp.2024.116332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/05/2024]
Abstract
The tumor suppressor proteins are key transcription factors involved in the regulation of various cellular processes, such as apoptosis, DNA repair, cell cycle, senescence, and metabolism. The tumor suppressor protein p53 responds to different type of stress signaling, such as hypoxia, DNA damage, nutrient deprivation, oncogene activation, by activating or repressing the expression of different genes that target processes mentioned earlier. p53 has the ability to modulate the activity of many other proteins and signaling pathway through protein-protein interaction, post-translational modifications, or non-coding RNAs. In many cancers the p53 is found to be mutated or inactivated, resulting in the loss of its tumor suppressor function and acquisition of new oncogenic properties. The tumor suppressor protein p53 also plays a role in the development of other metabolic disorders such as diabetes, obesity, and fatty liver disease. In this review, we will summarize the current data and knowledge on the molecular mechanisms and the functions of p53 in different pathways and processes at the cellular level and discuss the its implications for human health and disease.
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Affiliation(s)
- Gazmend Temaj
- Faculty of Pharmacy, College UBT, 10000 Prishtina, Kosovo.
| | - Silvia Chichiarelli
- Department of Biochemical Sciences "A. Rossi-Fanelli", Sapienza University of Rome, 00185 Rome, Italy.
| | | | - Sarmistha Saha
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, Mathura 00185, Uttar Pradesh, India.
| | - Nexhibe Nuhii
- Department of Pharmacy, Faculty of Medical Sciences, State University of Tetovo, 1200 Tetovo, Macedonia.
| | - Rifat Hadziselimovic
- Faculty of Science, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina.
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", La Sapienza University, 00185 Rome, Italy.
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3
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Chasov V, Davletshin D, Gilyazova E, Mirgayazova R, Kudriaeva A, Khadiullina R, Yuan Y, Bulatov E. Anticancer therapeutic strategies for targeting mutant p53-Y220C. J Biomed Res 2024; 38:222-232. [PMID: 38738269 PMCID: PMC11144932 DOI: 10.7555/jbr.37.20230093] [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: 04/14/2023] [Revised: 09/25/2023] [Accepted: 10/07/2023] [Indexed: 05/14/2024] Open
Abstract
The tumor suppressor p53 is a transcription factor with a powerful antitumor activity that is controlled by its negative regulator murine double minute 2 (MDM2, also termed HDM2 in humans) through a feedback mechanism. At the same time, TP53 is the most frequently mutated gene in human cancers. Mutant p53 proteins lose wild-type p53 tumor suppression functions but acquire new oncogenic properties, among which are deregulating cell proliferation, increasing chemoresistance, disrupting tissue architecture, and promoting migration, invasion and metastasis as well as several other pro-oncogenic activities. The oncogenic p53 mutation Y220C creates an extended surface crevice in the DNA-binding domain destabilizing p53 and causing its denaturation and aggregation. This cavity accommodates stabilizing small molecules that have therapeutic values. The development of suitable small-molecule stabilizers is one of the therapeutic strategies for reactivating the Y220C mutant protein. In this review, we summarize approaches that target p53-Y220C, including reactivating this mutation with small molecules that bind Y220C to the hydrophobic pocket and developing immunotherapies as the goal for the near future, which target tumor cells that express the p53-Y220C neoantigen.
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Affiliation(s)
- Vitaly Chasov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Damir Davletshin
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Elvina Gilyazova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Regina Mirgayazova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Anna Kudriaeva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
| | - Raniya Khadiullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
| | - Youyong Yuan
- Institute of Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Emil Bulatov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan 420008, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
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4
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Peuget S, Zhou X, Selivanova G. Translating p53-based therapies for cancer into the clinic. Nat Rev Cancer 2024; 24:192-215. [PMID: 38287107 DOI: 10.1038/s41568-023-00658-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/12/2023] [Indexed: 01/31/2024]
Abstract
Inactivation of the most important tumour suppressor gene TP53 occurs in most, if not all, human cancers. Loss of functional wild-type p53 is achieved via two main mechanisms: mutation of the gene leading to an absence of tumour suppressor activity and, in some cases, gain-of-oncogenic function; or inhibition of the wild-type p53 protein mediated by overexpression of its negative regulators MDM2 and MDMX. Because of its high potency as a tumour suppressor and the dependence of at least some established tumours on its inactivation, p53 appears to be a highly attractive target for the development of new anticancer drugs. However, p53 is a transcription factor and therefore has long been considered undruggable. Nevertheless, several innovative strategies have been pursued for targeting dysfunctional p53 for cancer treatment. In mutant p53-expressing tumours, the predominant strategy is to restore tumour suppressor function with compounds acting either in a generic manner or otherwise selective for one or a few specific p53 mutations. In addition, approaches to deplete mutant p53 or to target vulnerabilities created by mutant p53 expression are currently under development. In wild-type p53 tumours, the major approach is to protect p53 from the actions of MDM2 and MDMX by targeting these negative regulators with inhibitors. Although the results of at least some clinical trials of MDM2 inhibitors and mutant p53-restoring compounds are promising, none of the agents has yet been approved by the FDA. Alternative strategies, based on a better understanding of p53 biology, the mechanisms of action of compounds and treatment regimens as well as the development of new technologies are gaining interest, such as proteolysis-targeting chimeras for MDM2 degradation. Other approaches are taking advantage of the progress made in immune-based therapies for cancer. In this Review, we present these ongoing clinical trials and emerging approaches to re-evaluate the current state of knowledge of p53-based therapies for cancer.
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Affiliation(s)
- Sylvain Peuget
- Department of Microbiology, Tumour and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Xiaolei Zhou
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Galina Selivanova
- Department of Microbiology, Tumour and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
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Bates M, Mullen D, Lee E, Costigan D, Heron EA, Kernan N, Barry-O'Crowley J, Martin C, Keegan H, Malone V, Brooks RD, Brooks DA, Logan JM, Martini C, Selemidis S, McFadden J, O'Riain C, Spillane CD, Gallagher MF, McCann A, O'Toole S, O'Leary JJ. P53 and TLR4 expression are prognostic markers informing progression free survival of advanced stage high grade serous ovarian cancer. Pathol Res Pract 2024; 253:155020. [PMID: 38103365 DOI: 10.1016/j.prp.2023.155020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023]
Abstract
OBJECTIVE New prognostic biomarkers, and bio-signatures, are urgently needed to facilitate a precision medicine-based approach to more effectively treat patients with high-grade serous ovarian cancer (HGSC). In this study, we analysed the expression patterns of a series of candidate protein biomarkers. METHODS The panel of markers which included MyD88, TLR4, MAD2, PR, OR, WT1, p53, p16, CD10 and Ki67 was assessed using immunohistochemistry in a tissue microarray (TMA) cohort of n = 80 patients, composed of stage 3-4 HGSCs. Each marker was analysed for their potential to predict both overall survival (OS) and progression-free survival (PFS). RESULTS TLR4 and p53 were found to be individually predictive of poorer PFS (Log Rank, p = 0.017, p = 0.030 respectively). Cox regression analysis also identified high p53 and TLR4 expression as prognostic factors for reduced PFS (p53; HR=1.785, CI=1.036-3.074, p = 0.037 and TLR4; HR=2.175, CI=1.112-4.253, p = 0.023). Multivariate forward conditional Cox regression analysis, examining all markers, identified a combined signature composed of p53 and TLR4 as prognostic for reduced PFS (p = 0.023). CONCLUSION Combined p53 and TLR4 marker assessment may help to aid treatment stratification for patients diagnosed with advanced-stage HGSC.
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Affiliation(s)
- Mark Bates
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland.
| | - Dorinda Mullen
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Eimear Lee
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Danielle Costigan
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Elizabeth A Heron
- Department of Psychiatry, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Niamh Kernan
- Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | | | - Cara Martin
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Helen Keegan
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Victoria Malone
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
| | - Robert D Brooks
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Doug A Brooks
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Jessica M Logan
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Carmela Martini
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Stavros Selemidis
- Centre for Respiratory Science and Health, School of Health and Biomedical Sciences, Royal Melbourne Institute of Technology, Bundoora, Australia
| | - Julie McFadden
- Department of Histopathology, St James's Hospital, Dublin, Ireland
| | - Ciaran O'Riain
- Department of Histopathology, St James's Hospital, Dublin, Ireland
| | - Cathy D Spillane
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland
| | - Michael F Gallagher
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland
| | - Amanda McCann
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin and UCD School of Medicine, University College Dublin, UCD, Belfield Dublin 4, Ireland
| | - Sharon O'Toole
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Obstetrics and Gynaecology, Trinity College Dublin, Dublin, Ireland
| | - John J O'Leary
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland; Emer Casey Molecular Pathology Research Laboratory, Coombe Women & Infants University Hospital, Dublin, Ireland; Trinity St James's Cancer Institute, Dublin, Ireland; Department of Pathology, Coombe Women & Infants University Hospital, Dublin, Ireland
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6
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Li J, Xiao S, Shi F, Song H, Wu J, Zheng D, Chen X, Tan K, Lu M. Arsenic trioxide extends survival of Li-Fraumeni syndrome mimicking mouse. Cell Death Dis 2023; 14:783. [PMID: 38030599 PMCID: PMC10687230 DOI: 10.1038/s41419-023-06281-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/28/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023]
Abstract
Li-Fraumeni syndrome (LFS) is characterized by germline mutations occurring on one allele of genome guardian TP53. It is a severe cancer predisposition syndrome with a poor prognosis, partly due to the frequent development of subsequent primary tumors following DNA-damaging therapies. Here we explored, for the first time, the effectiveness of mutant p53 rescue compound in treating LFS-mimicking mice harboring a deleterious p53 mutation. Among the ten p53 hotspot mutations in IARC LFS cohorts, R282W is one of the mutations predicting the poorest survival prognosis and the earliest tumor onset. Among the six clinical-stage mutant p53 rescue compounds, arsenic trioxide (ATO) effectively restored transactivation activity to p53-R282W. We thus constructed a heterozygous Trp53 R279W (corresponding to human R282W) mouse model for the ATO treatment study. The p53R279W/+ (W/+) mice exhibited tumor onset and overall survival well mimicking the ones of human LFS. Further, 35 mg/L ATO addition in drink water significantly extended the median survival of W/+ mice (from 460 to 596 days, hazard ratio = 0.4003, P = 0.0008). In the isolated tumors from ATO-treated W/+ mice, the representative p53 targets including Cdkn1a, Mdm2, and Tigar were significantly upregulated, accompanying with a decreased level of the proliferation marker Ki67 and increased level of apoptosis marker TUNEL. Together, the non-genotoxic treatment of p53 rescue compound ATO holds promise as an alternative for LFS therapeutic.
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Affiliation(s)
- Jiabing Li
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Shujun Xiao
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Fangfang Shi
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Huaxin Song
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jiaqi Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Derun Zheng
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xueqin Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Kai Tan
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Min Lu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Malhotra L, Kaur P, Ethayathulla AS. Flavonoids as potential reactivators of structural mutation p53Y220C by computational and cell-based studies. J Biomol Struct Dyn 2023:1-12. [PMID: 37643005 DOI: 10.1080/07391102.2023.2252071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023]
Abstract
The p53 Y220C is one of the most frequently observed structural mutants in various human cancers. The substitution of residue Tyr to Cys makes the p53 DNA binding domain susceptible to solvent entry into the hydrophobic core of the domain thereby destabilizing p53, which results in loss of its tumor suppressor activity. The mutation creates a structural crevice at the region between S3/S4 and S7/S8 loops in the DNA binding domain which can be targeted by small molecules. Studies have shown that the synthetic and natural compounds could bind to this crevice and restore the structure and function of the mutant p53Y220C to the wild type. In our previous study, we have shown Curcumin could rescue the function of mutant p53Y220C in pancreatic cancer cell line BxPC-3 harboring genomic mutation. In this study, we explored six flavonoids structurally similar to Curcumin such as Apigenin, Isoliquiritigenin, Liquiritigenin, Luteolin, Methylophiopogonanone A (MPA), and Methylophiopogonanone B (MPB) to test their potency to restore p53Y220C by molecular docking, molecular dynamics simulations and cytotoxicity assay. The secondary structure analysis after the MD simulations suggested that these compounds could stabilize the mutant p53 DNA binding domain to the wild type. In the cell-based cytotoxicity studies using p53Y220C harbouring BxPC-3 cell lines, the compounds MPA and MPB showed 75% cell death at 100 µM concentration. We proposed that the flavonoids MPA and MPB have the therapeutic potential to restore p53Y220C and could be used as a combinatorial therapy to reduce the dosage burden.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Lakshay Malhotra
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India
- Department of Biochemistry, Sri Venkateswara College, University of Delhi, New Delhi, India
| | - Punit Kaur
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India
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8
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Zhen DB, Safyan RA, Konick EQ, Nguyen R, Prichard CC, Chiorean EG. The role of molecular testing in pancreatic cancer. Therap Adv Gastroenterol 2023; 16:17562848231171456. [PMID: 37197396 PMCID: PMC10184226 DOI: 10.1177/17562848231171456] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 04/06/2023] [Indexed: 05/19/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDA) is highly aggressive and has few treatment options. To personalize therapy, it is critical to delineate molecular subtypes and understand inter- and intra-tumoral heterogeneity. Germline testing for hereditary genetic abnormalities is recommended for all patients with PDA and somatic molecular testing is recommended for all patients with locally advanced or metastatic disease. KRAS mutations are present in 90% of PDA, while 10% are KRAS wild type and are potentially targetable with epidermal growth factor receptor blockade. KRASG12C inhibitors have shown activity in G12C-mutated cancers, and novel G12D and pan-RAS inhibitors are in clinical trials. DNA damage repair abnormalities, germline or somatic, occur in 5-10% of patients and are likely to benefit from DNA damaging agents and maintenance therapy with poly-ADP ribose polymerase inhibitors. Fewer than 1% of PDA harbor microsatellite instability high status and are susceptible to immune checkpoint blockade. Albeit very rare, occurring in <1% of patients with KRAS wild-type PDAs, BRAF V600E mutations, RET and NTRK fusions are targetable with cancer agnostic Food and Drug Administration-approved therapies. Genetic, epigenetic, and tumor microenvironment targets continue to be identified at an unprecedented pace, enabling PDA patients to be matched to targeted and immune therapeutics, including antibody-drug conjugates, and genetically engineered chimeric antigen receptor or T-cell receptor - T-cell therapies. In this review, we highlight clinically relevant molecular alterations and focus on targeted strategies that can improve patient outcomes through precision medicine.
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Affiliation(s)
- David B. Zhen
- University of Washington School of Medicine, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Rachael A. Safyan
- University of Washington School of Medicine, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Eric Q. Konick
- University of Washington, School of Medicine Seattle, WA, USA
| | - Ryan Nguyen
- University of Washington, School of Medicine Seattle, WA, USA
| | | | - E. Gabriela Chiorean
- University of Washington School of Medicine, Fred Hutchinson Cancer Center, 825 Eastlake Avenue East, LG-465, Seattle, WA 98109, USA Fred Hutchinson
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9
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Wang H, Guo M, Wei H, Chen Y. Targeting p53 pathways: mechanisms, structures, and advances in therapy. Signal Transduct Target Ther 2023; 8:92. [PMID: 36859359 PMCID: PMC9977964 DOI: 10.1038/s41392-023-01347-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/19/2022] [Accepted: 02/07/2023] [Indexed: 03/03/2023] Open
Abstract
The TP53 tumor suppressor is the most frequently altered gene in human cancers, and has been a major focus of oncology research. The p53 protein is a transcription factor that can activate the expression of multiple target genes and plays critical roles in regulating cell cycle, apoptosis, and genomic stability, and is widely regarded as the "guardian of the genome". Accumulating evidence has shown that p53 also regulates cell metabolism, ferroptosis, tumor microenvironment, autophagy and so on, all of which contribute to tumor suppression. Mutations in TP53 not only impair its tumor suppressor function, but also confer oncogenic properties to p53 mutants. Since p53 is mutated and inactivated in most malignant tumors, it has been a very attractive target for developing new anti-cancer drugs. However, until recently, p53 was considered an "undruggable" target and little progress has been made with p53-targeted therapies. Here, we provide a systematic review of the diverse molecular mechanisms of the p53 signaling pathway and how TP53 mutations impact tumor progression. We also discuss key structural features of the p53 protein and its inactivation by oncogenic mutations. In addition, we review the efforts that have been made in p53-targeted therapies, and discuss the challenges that have been encountered in clinical development.
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Affiliation(s)
- Haolan Wang
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Ming Guo
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Hudie Wei
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
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10
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Mutant p53 in cancer: from molecular mechanism to therapeutic modulation. Cell Death Dis 2022; 13:974. [PMID: 36400749 PMCID: PMC9674619 DOI: 10.1038/s41419-022-05408-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022]
Abstract
TP53, a crucial tumor suppressor gene, is the most commonly mutated gene in human cancers. Aside from losing its tumor suppressor function, mutant p53 (mutp53) often acquires inherent, novel oncogenic functions, which is termed "gain-of-function". Emerging evidence suggests that mutp53 is highly associated with advanced malignancies and poor prognosis, which makes it a target for development of novel cancer therapies. Herein, we provide a summary of our knowledge of the mutp53 types and mutp53 spectrum in cancers. The mechanisms of mutp53 accumulation and gain-of-function are also summarized. Furthermore, we discuss the gain-of-function of mutp53 in cancers: genetic instability, ferroptosis, microenvironment, and stemness. Importantly, the role of mutp53 in the clinic is also discussed, particularly with regard to chemotherapy and radiotherapy. Last, emphasis is given to emerging strategies on how to target mutp53 for tumor therapy. Thus, this review will contribute to better understanding of the significance of mutp53 as a target for therapeutic strategies.
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p53: From Fundamental Biology to Clinical Applications in Cancer. BIOLOGY 2022; 11:biology11091325. [PMID: 36138802 PMCID: PMC9495382 DOI: 10.3390/biology11091325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/04/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022]
Abstract
Simple Summary p53 tumour suppressor gene is the most altered in cancer. Several decades of research have established that it is of pivotal importance in prompting neoplastic phenomena, including cancer initiation and progression. However, it has crucial functions for cellular life. Knowledge and awareness about these multifaceted properties should be part of the cultural background of all scientists. In this review, we describe and discuss the multifaceted roles of p53, from its discovery to clinical applications in cancer therapy. Abstract p53 tumour suppressor gene is our major barrier against neoplastic transformation. It is involved in many cellular functions, including cell cycle arrest, senescence, DNA repair, apoptosis, autophagy, cell metabolism, ferroptosis, immune system regulation, generation of reactive oxygen species, mitochondrial function, global regulation of gene expression, miRNAs, etc. Its crucial importance is denounced by the high percentage of amino acid sequence identity between very different species (Homo sapiens, Drosophila melanogaster, Rattus norvegicus, Danio rerio, Canis lupus familiaris, Gekko japonicus). Many of its activities allowed life on Earth (e.g., repair from radiation-induced DNA damage) and directly contribute to its tumour suppressor function. In this review, we provide paramount information on p53, from its discovery, which is an interesting paradigm of science evolution, to potential clinical applications in anti-cancer treatment. The description of the fundamental biology of p53 is enriched by specific information on the structure and function of the protein as well by tumour/host evolutionistic perspectives of its role.
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Miller JJ, Kwan K, Gaiddon C, Storr T. A role for bioinorganic chemistry in the reactivation of mutant p53 in cancer. J Biol Inorg Chem 2022; 27:393-403. [PMID: 35488931 DOI: 10.1007/s00775-022-01939-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/11/2022] [Indexed: 12/19/2022]
Abstract
Metal ion dysregulation has been implicated in a number of diseases from neurodegeneration to cancer. While defective metal ion transport mechanisms are known to cause specific diseases of genetic origin, the role of metal dysregulation in many diseases has yet to be elucidated due to the complicated function (both good and bad!) of metal ions in the body. A breakdown in metal ion speciation can manifest in several ways from increased reactive oxygen species (ROS) generation to an increase in protein misfolding and aggregation. In this review, we will discuss the role of Zn in the proper function of the p53 protein in cancer. The p53 protein plays a critical role in the prevention of genome mutations via initiation of apoptosis, DNA repair, cell cycle arrest, anti-angiogenesis, and senescence pathways to avoid propagation of damaged cells. p53 is the most frequently mutated protein in cancer and almost all cancers exhibit malfunction along the p53 pathway. Thus, there has been considerable effort dedicated to restoring normal p53 expression and activity to mutant p53. This includes understanding the relative populations of the Zn-bound and Zn-free p53 in wild-type and mutant forms, and the development of metallochaperones to re-populate the Zn binding site to restore mutant p53 activity. Parallels will be made to the development of multifunctional metal binding agents for modulating the aggregation of the amyloid-beta peptide in Alzheimer's Disease (AD).
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Affiliation(s)
- Jessica J Miller
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - Kalvin Kwan
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - Christian Gaiddon
- Inserm UMR_S1113, IRFAC, team Streinth, Strasbourg University, Strasbourg, France
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
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Ha JH, Prela O, Carpizo DR, Loh SN. p53 and Zinc: A Malleable Relationship. Front Mol Biosci 2022; 9:895887. [PMID: 35495631 PMCID: PMC9043292 DOI: 10.3389/fmolb.2022.895887] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 12/14/2022] Open
Abstract
A large percentage of transcription factors require zinc to bind DNA. In this review, we discuss what makes p53 unique among zinc-dependent transcription factors. The conformation of p53 is unusually malleable: p53 binds zinc extremely tightly when folded, but is intrinsically unstable in the absence of zinc at 37°C. Whether the wild-type protein folds in the cell is largely determined by the concentration of available zinc. Consequently, zinc dysregulation in the cell as well as a large percentage of tumorigenic p53 mutations can cause p53 to lose zinc, misfold, and forfeit its tumor suppressing activity. We highlight p53’s noteworthy biophysical properties that give rise to its malleability and how proper zinc binding can be restored by synthetic metallochaperones to reactivate mutant p53. The activity and mechanism of metallochaperones are compared to those of other mutant p53-targeted drugs with an emphasis on those that have reached the clinical trial stage.
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Affiliation(s)
- Jeung-Hoi Ha
- Department of Biochemistry and Molecular Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Orjola Prela
- Division of Surgical Oncology, Department of Surgery, Wilmot Cancer Center, University of Rochester, Rochester, NY, United States
| | - Darren R Carpizo
- Division of Surgical Oncology, Department of Surgery, Wilmot Cancer Center, University of Rochester, Rochester, NY, United States
| | - Stewart N Loh
- Department of Biochemistry and Molecular Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
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Tang Y, Song H, Wang Z, Xiao S, Xiang X, Zhan H, Wu L, Wu J, Xing Y, Tan Y, Liang Y, Yan N, Li Y, Li J, Wu J, Zheng D, Jia Y, Chen Z, Li Y, Zhang Q, Zhang J, Zeng H, Tao W, Liu F, Wu Y, Lu M. Repurposing antiparasitic antimonials to noncovalently rescue temperature-sensitive p53 mutations. Cell Rep 2022; 39:110622. [PMID: 35417717 DOI: 10.1016/j.celrep.2022.110622] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/23/2021] [Accepted: 03/15/2022] [Indexed: 02/05/2023] Open
Abstract
The tumor suppressor p53 is inactivated by over hundreds of heterogenous mutations in cancer. Here, we purposefully selected phenotypically reversible temperature-sensitive (TS) p53 mutations for pharmacological rescue with thermostability as the compound-screening readout. This rational screening identified antiparasitic drug potassium antimony tartrate (PAT) as an agent that can thermostabilize the representative TS mutant p53-V272M via noncovalent binding. PAT met the three basic criteria for a targeted drug: availability of a co-crystal structure, compatible structure-activity relationship, and intracellular target specificity, consequently exhibiting antitumor activity in a xenograft mouse model. At the antimony dose in clinical antiparasitic therapy, PAT effectively and specifically rescued p53-V272M in patient-derived primary leukemia cells in single-cell RNA sequencing. Further scanning of 815 frequent p53-missense mutations identified 65 potential PAT-treatable mutations, most of which were temperature sensitive. These results lay the groundwork for repurposing noncovalent antiparasitic antimonials for precisely treating cancers with the 65 p53 mutations.
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Affiliation(s)
- Yigang Tang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Huaxin Song
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhengyuan Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shujun Xiao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xinrong Xiang
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Huien Zhan
- Department of Hematology, The First Affiliated Hospital of Jinan University, Guangzhou 510632, Guangdong, China
| | - Lili Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jiale Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yangfei Xing
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yun Tan
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ying Liang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ni Yan
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yuntong Li
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jiabing Li
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jiaqi Wu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Derun Zheng
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yunchuan Jia
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhiming Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yunqi Li
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qianqian Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jianming Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hui Zeng
- Department of Hematology, The First Affiliated Hospital of Jinan University, Guangzhou 510632, Guangdong, China
| | - Wei Tao
- Department of Hematology, The People's Hospital of Jianyang City, Jianyang 641400, Sichuan, China
| | - Feng Liu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Yu Wu
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Min Lu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
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