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Rajaram S, Synnott NC, Crown J, Madden SF, Duffy MJ. Targeting mutant p53 with arsenic trioxide: A preclinical study focusing on triple negative breast cancer. Transl Oncol 2024; 46:102025. [PMID: 38870678 PMCID: PMC11225897 DOI: 10.1016/j.tranon.2024.102025] [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: 01/03/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024] Open
Abstract
New treatments are urgently required for triple-negative breast cancer (TNBC). As TP53 is mutated in approximately 80% of TNBC, it is theoretically an attractive target for new drugs for this disease. Arsenic trioxide (ATO), which is used to treat promyelocytic leukaemia, was recently shown to reactivate mutant p53 and restore wild-type functionality. The aim of this study was to evaluate ATO as a potential new treatment for TNBC. Using a panel of 20 cell lines, we found that TNBC cell lines were more sensitive to ATO than non-TNBC cell lines (P = 0.045). Consistent with its ability to reactivate mutant p53, ATO was a more potent inhibitor of proliferation in cell lines with mutant TP53 than the wildtype TP53 (P = 0.027). Direct evidence of mutant p53 reactivation was the induction of multiple wild-type p53 canonical target genes such as CDKN1A, SLC7A11, BBC3, PMAIP1, SESN2, SRXN1 and TXNRD1. Our findings support the activation of mutant p53 by ATO and, furthermore, the possible repurposing of ATO to treat TP53-mutated TNBC.
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Affiliation(s)
- Subhasree Rajaram
- UCD School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
| | - Naoise C Synnott
- UCD School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland
| | - John Crown
- Department of Medical Oncology, St. Vincent's University Hospital, Dublin D04 T6F4, Ireland
| | - Stephen F Madden
- Data Science Centre, School of Population Health, RCSI University of Medicine and Health Sciences, Dublin D02 YN77, Ireland
| | - Michael J Duffy
- UCD School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin D04 V1W8, Ireland; UCD Clinical Research Centre, St. Vincent's University Hospital, Dublin D04 T6F4, Ireland.
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Tuval A, Strandgren C, Heldin A, Palomar-Siles M, Wiman KG. Pharmacological reactivation of p53 in the era of precision anticancer medicine. Nat Rev Clin Oncol 2024; 21:106-120. [PMID: 38102383 DOI: 10.1038/s41571-023-00842-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2023] [Indexed: 12/17/2023]
Abstract
p53, which is encoded by the most frequently mutated gene in cancer, TP53, is an attractive target for novel cancer therapies. Despite major challenges associated with this approach, several compounds that either augment the activity of wild-type p53 or restore all, or some, of the wild-type functions to p53 mutants are currently being explored. In wild-type TP53 cancer cells, p53 function is often abrogated by overexpression of the negative regulator MDM2, and agents that disrupt p53-MDM2 binding can trigger a robust p53 response, albeit potentially with induction of p53 activity in non-malignant cells. In TP53-mutant cancer cells, compounds that promote the refolding of missense mutant p53 or the translational readthrough of nonsense mutant TP53 might elicit potent cell death. Some of these compounds have been, or are being, tested in clinical trials involving patients with various types of cancer. Nonetheless, no p53-targeting drug has so far been approved for clinical use. Advances in our understanding of p53 biology provide some clues as to the underlying reasons for the variable clinical activity of p53-restoring therapies seen thus far. In this Review, we discuss the intricate interactions between p53 and its cellular and microenvironmental contexts and factors that can influence p53's activity. We also propose several strategies for improving the clinical efficacy of these agents through the complex perspective of p53 functionality.
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Affiliation(s)
- Amos Tuval
- Karolinska Institutet, Department of Oncology-Pathology, Stockholm, Sweden
| | | | - Angelos Heldin
- Karolinska Institutet, Department of Oncology-Pathology, Stockholm, Sweden
| | | | - Klas G Wiman
- Karolinska Institutet, Department of Oncology-Pathology, Stockholm, Sweden.
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3
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Yu L, Li J, Xiao M. LncRNA SLC7A11-AS1 stabilizes CTCF by inhibiting its UBE3A-mediated ubiquitination to promote melanoma metastasis. Am J Cancer Res 2023; 13:6256-6269. [PMID: 38187043 PMCID: PMC10767361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/28/2023] [Indexed: 01/09/2024] Open
Abstract
Malignant melanoma (MM) is one of the most aggressive types of skin cancer. Long non-coding RNAs (lncRNAs) are important regulatory factors in the pathogenesis of various diseases. Here, we found that the lncRNA SLC7A11-AS1 was highly expressed in MM. Therefore, we investigated its regulatory role in the migration and invasion of MM cells and the associated mechanism. SLC7A11-AS1 and CTCF levels in MM cell lines were detected using RT-qPCR and western blotting, and their regulatory effects on the migratory and invasive abilities were determined using CCK-8, EdU, transwell, wound-healing assays and mouse model. RNA pull-down and RIP assays were performed to explore the association of SLC7A11-AS1 and CTCF and the correlation between CTCF and UBE3A. SLC7A11-AS1 and CTCF were highly expressed in MM cells. The knockdown of SLC7A11-AS1 decreased the expression of CTCF. Mechanistically, SLC7A11-AS1 inhibited the degradation of CTCF by inhibiting the ubiquitination by UBE3A. The knockdown of both SLC7A11-AS1 and CTCF inhibited the migration and invasion of MM cells and attenuated MM-to-lung metastasis in a mouse model. Taken together, SLC7A11-AS1 promoted the invasive and migratory abilities of MM cells by inhibiting the UBE3A-regulated ubiquitination of CTCF. Therefore, SLC7A11-AS1 may be a potential therapeutic target for MM.
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Affiliation(s)
- Lingling Yu
- Department of Dermatology, Shanghai Eighth People's Hospital Shanghai, China
| | - Jing Li
- Department of Dermatology, Shanghai Eighth People's Hospital Shanghai, China
| | - Ming Xiao
- Department of Dermatology, Shanghai Eighth People's Hospital Shanghai, China
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Gu J, Chen J, Xiang S, Zhou X, Li J. Intricate confrontation: Research progress and application potential of TRIM family proteins in tumor immune escape. J Adv Res 2023; 54:147-179. [PMID: 36736694 DOI: 10.1016/j.jare.2023.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 01/06/2023] [Accepted: 01/12/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Tripartite motif (TRIM) family proteins have more than 80 members and are widely found in various eukaryotic cells. Most TRIM family proteins participate in the ubiquitin-proteasome degradation system as E3-ubiquitin ligases; therefore, they play pivotal regulatory roles in the occurrence and development of tumors, including tumor immune escape. Due to the diversity of functional domains of TRIM family proteins, they can extensively participate in multiple signaling pathways of tumor immune escape through different substrates. In current research and clinical contexts, immune escape has become an urgent problem. The extensive participation of TRIM family proteins in curing tumors or preventing postoperative recurrence and metastasis makes them promising targets. AIM OF REVIEW The aim of the review is to make up for the gap in the current research on TRIM family proteins and tumor immune escape and propose future development directions according to the current progress and problems. KEY SCIENTIFIC CONCEPTS OF REVIEW This up-to-date review summarizes the characteristics and biological functions of TRIM family proteins, discusses the mechanisms of TRIM family proteins involved in tumor immune escape, and highlights the specific mechanism from the level of structure-function-molecule-pathway-phenotype, including mechanisms at the level of protein domains and functions, at the level of molecules and signaling pathways, and at the level of cells and microenvironments. We also discuss the application potential of TRIM family proteins in tumor immunotherapy, such as possible treatment strategies for combination targeting TRIM family protein drugs and checkpoint inhibitors for improving cancer treatment.
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Affiliation(s)
- Junjie Gu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jingyi Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Shuaixi Xiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xikun Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China.
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
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Wang X, Yu J, Wen H, Yan J, Peng K, Zhou H. Antioxidative stress protein SRXN1 can be used as a radiotherapy prognostic marker for prostate cancer. BMC Urol 2023; 23:148. [PMID: 37726767 PMCID: PMC10507967 DOI: 10.1186/s12894-023-01319-1] [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: 08/06/2022] [Accepted: 09/04/2023] [Indexed: 09/21/2023] Open
Abstract
PURPOSE To explore the mechanisms of radiotherapy resistance and search for prognostic biomarkers for prostate cancer. METHODS The GSE192817 and TCGA PRAD datasets were selected and downloaded from the GEO and UCSC Xena databases. Differential expression and functional annotation analyses were applied to 52 tumour cell samples from GSE192817. Then, the ssGSEA or GSVA algorithms were applied to quantitatively score the biological functional activity of samples in the GSE192817 and TCGA PRAD datasets, combined with specific gene sets collected from the Molecular Signatures Database (MSigDB). Subsequently, the Wilcoxon rank-sum test was used to compare the differences in ssGSEA or GSVA scores among cell types or PRAD patients. Moreover, radiotherapy resistance-associated gene screening was performed on DU145 and PC3 cells (prostate cancer cells), and survival analysis was used to evaluate the efficacy of these genes for predicting the prognosis of PRAD patients. RESULTS A total of 114 genes that were differentially expressed in more than two different cancer cell types and associated with either sham surgery or radiotherapy treatment (X-ray or photon irradiation) were detected in cancer cells from GSE192817. Comparison of DNA damage-related ssGSEA scores between sham surgery and radiotherapy treatment in prostate cancer cells (DU145 and PC3) showed that photon irradiation was potentially more effective than X-ray treatment. In the TCGA PRAD dataset, patients treated with radiotherapy had much higher "GOBP_CELLULAR_RESPONSE_TO_DNA_DAMAGE_STIMULUS", "GOBP_G2_DNA_DAMAGE_CHECKPOINT" and "GOBP_INTRA_S_DNA_DAMAGE_CHECKPOINT" GSVA scores, and the Wilcoxon rank-sum test p values were 0.0005, 0.0062 and 0.0800, respectively. Furthermore, SRXN1 was upregulated in DU145 cells (resistant to X-ray irradiation compared to PC3 cells) after radiotherapy treatment, and low SRXN1 expression in patients was beneficial to radiotherapy outcomes. The log-rank test p value for PFS was 0.0072. CONCLUSIONS Radiotherapy can damage DNA and induce oxidative stress to kill tumour cells. In this study, we found that SRXN1, as an antioxidative stress gene, plays an important role in radiotherapy for prostate cancer treatment, and this gene is also a potential biomarker for predicting the prognosis of patients treated with radiotherapy.
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Affiliation(s)
- Xing Wang
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China
| | - Jiandi Yu
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China
| | - Huali Wen
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China
| | - Junfeng Yan
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China
| | - Kun Peng
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China
| | - Haiyong Zhou
- Department of Urology, Zhejiang Hospital, # 1229, Gudun Road, Hangzhou, 310030, China.
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Kotob S, Kelts JL. PRIMA-1 MET Does Not Restore Vitamin D Sensitivity to MDA-MB-231 and MDA-MB-468 Triple-Negative Breast Cancer Cells. ACS OMEGA 2023; 8:30500-30507. [PMID: 37636961 PMCID: PMC10448659 DOI: 10.1021/acsomega.3c03719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/17/2023] [Indexed: 08/29/2023]
Abstract
Vitamin D is a steroid hormone that causes growth suppression in cultured cells. We had previously discovered that the triple-negative breast cancer cell lines MDA-MB-231 and MDA-MB-468 did not have growth suppression with vitamin D, while MCF-7 did. MCF-7 cells are not triple-negative and have wild-type p53. Both MDA-MB-231 and MDA-MB-468 have mutations in p53 and these mutations were a possible explanation for the lack of growth suppression with vitamin D. Our hypothesis was that reactivation of p53 in the triple-negative cell lines would cause them to become sensitive to vitamin D. We chose to use the small molecule PRIMA-1MET to reactivate p53 as it has been previously shown to restore function to the p53 mutants present in MB-231 and MB-468. We then measured the ability of vitamin D and its analogues calcipotriol and EB1089 to suppress growth in the presence of PRIMA-1MET. Here, we show that while PRIMA-1MET can kill the breast cancer cells investigated in this study, it does not restore their sensitivity to vitamin D or its analogues.
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Affiliation(s)
- Shadi
N. Kotob
- Department of Natural Sciences, University of Michigan-Flint, Flint, Michigan 48502, United States
| | - Jessica L. Kelts
- Department of Natural Sciences, University of Michigan-Flint, Flint, Michigan 48502, United States
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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: 27] [Impact Index Per Article: 27.0] [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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8
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Barutello G, Di Lorenzo A, Gasparetto A, Galiazzi C, Bolli E, Conti L, Cavallo F. Immunotherapy against the Cystine/Glutamate Antiporter xCT Improves the Efficacy of APR-246 in Preclinical Breast Cancer Models. Biomedicines 2022; 10:2843. [PMID: 36359363 PMCID: PMC9688020 DOI: 10.3390/biomedicines10112843] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 08/19/2023] Open
Abstract
Breast cancer is the most frequent cancer in women. Despite recent clinical advances, new therapeutic approaches are still required. The cystine-glutamate antiporter xCT, encoded by the SLC7A11 gene, which imports cystine in exchange with glutamate, is a potentially new target for breast cancer therapy, being involved in tumor cell redox balance and resistance to therapies. xCT expression is regulated by the oncosuppressor p53, which is mutated in many breast cancers. Indeed, mutant p53 (mut-p53) can induce xCT post-transcriptional down modulation, rendering mut-p53 tumors susceptible to oxidative damage. Interestingly, the drug APR-246, developed to restore the wild-type function of p53 in tumors harboring its mutation, alters the cell redox balance in a p53-independent way, possibly rendering the cells more sensitive to xCT inhibition. Here, we propose a combinatorial treatment based on xCT immunetargeting and APR-246 treatment as a strategy for tackling breast cancer. We demonstrate that combining the inhibition of xCT with the APR-246 drug significantly decreased breast cancer cell viability in vitro and induced apoptosis and affected cancer stem cells' self-renewal compared to the single treatments. Moreover, the immunetargeting of xCT through DNA vaccination in combination with APR-246 treatment synergistically hinders tumor progression and prevents lung metastasis formation in vivo. These effects can be mediated by the production of anti-xCT antibodies that are able to induce the antibody dependent cellular cytotoxicity of tumor cells. Overall, we demonstrate that DNA vaccination against xCT can synergize with APR-246 treatment and enhance its therapeutic effect. Thus, APR-246 treatment in combination with xCT immunetargeting may open new perspectives in the management of breast cancer.
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Fujihara KM, Zhang BZ, Jackson TD, Ogunkola MO, Nijagal B, Milne JV, Sallman DA, Ang CS, Nikolic I, Kearney CJ, Hogg SJ, Cabalag CS, Sutton VR, Watt S, Fujihara AT, Trapani JA, Simpson KJ, Stojanovski D, Leimkühler S, Haupt S, Phillips WA, Clemons NJ. Eprenetapopt triggers ferroptosis, inhibits NFS1 cysteine desulfurase, and synergizes with serine and glycine dietary restriction. SCIENCE ADVANCES 2022; 8:eabm9427. [PMID: 36103522 PMCID: PMC9473576 DOI: 10.1126/sciadv.abm9427] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The mechanism of action of eprenetapopt (APR-246, PRIMA-1MET) as an anticancer agent remains unresolved, although the clinical development of eprenetapopt focuses on its reported mechanism of action as a mutant-p53 reactivator. Using unbiased approaches, this study demonstrates that eprenetapopt depletes cellular antioxidant glutathione levels by increasing its turnover, triggering a nonapoptotic, iron-dependent form of cell death known as ferroptosis. Deficiency in genes responsible for supplying cancer cells with the substrates for de novo glutathione synthesis (SLC7A11, SHMT2, and MTHFD1L), as well as the enzymes required to synthesize glutathione (GCLC and GCLM), augments the activity of eprenetapopt. Eprenetapopt also inhibits iron-sulfur cluster biogenesis by limiting the cysteine desulfurase activity of NFS1, which potentiates ferroptosis and may restrict cellular proliferation. The combination of eprenetapopt with dietary serine and glycine restriction synergizes to inhibit esophageal xenograft tumor growth. These findings reframe the canonical view of eprenetapopt from a mutant-p53 reactivator to a ferroptosis inducer.
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Affiliation(s)
- Kenji M. Fujihara
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Corresponding author. (N.J.C.); (K.M.F.)
| | - Bonnie Z. Zhang
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Thomas D. Jackson
- Department of Biochemistry and Pharmacology, The University of Melbourne, Parkville, Victoria, Australia
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia
| | - Moses O. Ogunkola
- Institute of Biochemistry and Biology Department for Molecular Enzymology, University of Potsdam, Potsdam, Germany
| | - Brunda Nijagal
- Metabolomics Australia, The Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Parkville, Victoria, Australia
| | - Julia V. Milne
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - David A. Sallman
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Ching-Seng Ang
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia
| | - Iva Nikolic
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Conor J. Kearney
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Translational Hematology Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Simon J. Hogg
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Translational Hematology Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Carlos S. Cabalag
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Department of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Vivien R. Sutton
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Sally Watt
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Asuka T. Fujihara
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Joseph A. Trapani
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Kaylene J. Simpson
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Diana Stojanovski
- Department of Biochemistry and Pharmacology, The University of Melbourne, Parkville, Victoria, Australia
| | - Silke Leimkühler
- Institute of Biochemistry and Biology Department for Molecular Enzymology, University of Potsdam, Potsdam, Germany
| | - Sue Haupt
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Tumor Suppression and Cancer Sex Disparity Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Wayne A. Phillips
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Department of Surgery (St. Vincent’s Hospital), The University of Melbourne, Parkville, Victoria, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Nicholas J. Clemons
- Gastrointestinal Cancer Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- Corresponding author. (N.J.C.); (K.M.F.)
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10
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Luo Y, Xiang W, Liu Z, Yao L, Tang L, Tan W, Ye P, Deng J, Xiao J. Functional role of the SLC7A11-AS1/xCT axis in the development of gastric cancer cisplatin-resistance by a GSH-dependent mechanism. Free Radic Biol Med 2022; 184:53-65. [PMID: 35367340 DOI: 10.1016/j.freeradbiomed.2022.03.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 01/17/2023]
Abstract
Resistance to platinum-based chemotherapy is a major obstacle in gastric cancer (GC) treatment. Abundant long noncoding RNAs (lncRNAs) are reported to play important roles in tumorigenesis and drug resistance biology. Herein, we report that the SLC7A11-AS1 and xCT are involved in cisplatin resistance in GC. SLC7A11-AS1 was downregulated and xCT was upregulated in cisplatin-resistant GC tissues and cell lines. GC patients with low expression of SLC7A11-AS1 and high expression of xCT had a poor prognosis and relatively poor response to chemotherapy. Overexpression of SLC7A11-AS1 weakened GC growth, reduced intracellular GSH biosynthesis, enhanced intracellular reactive oxygen species (ROS) and conferred sensitivity to cisplatin to resistant GC cells in vitro and in vivo. Mechanistically, SLC7A11-AS1 directly suppressed xCT expression, while miR-33a-5p remarkably reduced SLC7A11-AS1 and xCT expression by directly targeting the SLC7A11-AS1 and xCT 3'UTRs. In addition, we found that low SLC7A11-AS1 expression activated the p38MAPK-JNK signaling pathway, and increased the expression of cisplatin export gene ATP7A and the GSH biosynthesis gene GCLM in GC.
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Affiliation(s)
- Yajun Luo
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China; Department of Gastrointestinal Surgery, Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, People's Republic of China
| | - Wanping Xiang
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China; The Department of Thoracic Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, People's Republic of China
| | - Zilin Liu
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China
| | - Lin Yao
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China
| | - Linghan Tang
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China
| | - Wang Tan
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China
| | - Pengcheng Ye
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, People's Republic of China
| | - Jingyu Deng
- The Department of of Gastric Cancer Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, People's Republic of China
| | - Jiangwei Xiao
- The Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chengdu Medical College, Faculty of Medicine, Chengdu, Sichuan, 610500, People's Republic of China.
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11
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Nanoprodrug ratiometrically integrating autophagy inhibitor and genotoxic agent for treatment of triple-negative breast cancer. Biomaterials 2022; 283:121458. [DOI: 10.1016/j.biomaterials.2022.121458] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/25/2022] [Accepted: 03/03/2022] [Indexed: 12/12/2022]
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12
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Amirtharaj F, Venkatesh GH, Wojtas B, Nawafleh HH, Mahmood AS, Nizami ZN, Khan MS, Thiery J, Chouaib S. p53 reactivating small molecule PRIMA‑1 MET/APR‑246 regulates genomic instability in MDA‑MB‑231 cells. Oncol Rep 2022; 47:85. [PMID: 35234267 DOI: 10.3892/or.2022.8296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 01/14/2022] [Indexed: 11/06/2022] Open
Abstract
Pharmacological reactivation of tumor‑suppressor protein p53 has acted as a promising strategy for more than 50% of human cancers that carry a non‑functional mutant p53 (mutp53). p53 plays a critical role in preserving genomic integrity and DNA fidelity through numerous biological processes, including cell cycle arrest, DNA repair, senescence and apoptosis. By contrast, non‑functional mutp53 compromises the aforementioned genome stabilizing mechanisms through gain of function, thereby increasing genomic instability in human cancers. Restoring the functional activity of p53 using both genetic and pharmacological approaches has gained prominence in targeting p53‑mutated tumors. Thus, the present study aimed to investigate the reactivation of p53 in DNA repair mechanisms and the maintenance of genomic stability using PRIMA‑1MET/APR‑246 small molecules, in both MDA‑MB‑231 and MCF‑7 breast cancer cell lines, which carry mutp53 and wild‑type p53, respectively. Results of the present study revealed that reactivation of p53 through APR‑246 led to an increase in the functional activity of DNA repair. Prolonged treatment of MDA‑MB‑231 cells with APR‑246 in the presence of cisplatin led to a reduction in mutational accumulation, compared with cells treated with cisplatin alone. These findings demonstrated that APR‑246 may act as a promising small molecule to control the genomic instability in p53‑mutated tumors.
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Affiliation(s)
- Francis Amirtharaj
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Goutham Hassan Venkatesh
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Bartosz Wojtas
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, PAS, 02‑093 Warsaw, Poland
| | - Hussam Hussein Nawafleh
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Ayda Shah Mahmood
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Zohra Nausheen Nizami
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Munazza Samar Khan
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
| | - Jerome Thiery
- INSERM UMR 1186, Integrative Tumor Immunology and Immunotherapy, Gustave Roussy, Faculty of Medicine, University Paris‑Saclay, F‑94805 Villejuif, France
| | - Salem Chouaib
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
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13
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Abrams SL, Duda P, Akula SM, Steelman LS, Follo ML, Cocco L, Ratti S, Martelli AM, Montalto G, Emma MR, Cervello M, Rakus D, Gizak A, McCubrey JA. Effects of the Mutant TP53 Reactivator APR-246 on Therapeutic Sensitivity of Pancreatic Cancer Cells in the Presence and Absence of WT-TP53. Cells 2022; 11:794. [PMID: 35269416 PMCID: PMC8909756 DOI: 10.3390/cells11050794] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 02/01/2023] Open
Abstract
The TP53 tumor suppressor is mutated in ~75% of pancreatic cancers. The mutant TP53 protein in pancreatic ductal adenocarcinomas (PDAC) promotes tumor growth and metastasis. Attempts have been made to develop molecules that restore at least some of the properties of wild-type (WT) TP53. APR-246 is one such molecule, and it is referred to as a mutant TP53 reactivator. To understand the potential of APR-246 to sensitize PDAC cells to chemotherapy, we introduced a vector encoding WT-TP53 into two PDAC cell lines, one lacking the expression of TP53 (PANC-28) and one with a gain-of-function (GOF) mutant TP53 (MIA-PaCa-2). APR-246 increased drug sensitivity in the cells containing either a WT or mutant TP53 protein with GOF activity, but not in cells that lacked TP53. The introduction of WT-T53 into PANC-28 cells increased their sensitivity to the TP53 reactivator, chemotherapeutic drugs, and signal transduction inhibitors. The addition of WT-TP53 to PDAC cells with GOF TP53 also increased their sensitivity to the drugs and therapeutics, indicating that APR-246 could function in cells with WT-TP53 and GOF TP53. These results highlight the importance of knowledge of the type of TP53 mutation that is present in cancer patients before the administration of drugs which function through the reactivation of TP53.
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Affiliation(s)
- Stephen L. Abrams
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (S.M.A.); (L.S.S.)
| | - Przemysław Duda
- Department of Molecular Physiology and Neurobiology, University of Wrocław, 50-335 Wrocław, Poland; (P.D.); (D.R.); (A.G.)
| | - Shaw M. Akula
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (S.M.A.); (L.S.S.)
| | - Linda S. Steelman
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (S.M.A.); (L.S.S.)
| | - Matilde L. Follo
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, 40139 Bologna, Italy; (M.L.F.); (L.C.); (S.R.); (A.M.M.)
| | - Lucio Cocco
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, 40139 Bologna, Italy; (M.L.F.); (L.C.); (S.R.); (A.M.M.)
| | - Stefano Ratti
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, 40139 Bologna, Italy; (M.L.F.); (L.C.); (S.R.); (A.M.M.)
| | - Alberto M. Martelli
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, 40139 Bologna, Italy; (M.L.F.); (L.C.); (S.R.); (A.M.M.)
| | - Giuseppe Montalto
- Department of Health Promotion, Maternal and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90127 Palermo, Italy;
- Institute for Biomedical Research and Innovation, National Research Council (CNR), 90146 Palermo, Italy; (M.R.E.); (M.C.)
| | - Maria Rita Emma
- Institute for Biomedical Research and Innovation, National Research Council (CNR), 90146 Palermo, Italy; (M.R.E.); (M.C.)
| | - Melchiorre Cervello
- Institute for Biomedical Research and Innovation, National Research Council (CNR), 90146 Palermo, Italy; (M.R.E.); (M.C.)
| | - Dariusz Rakus
- Department of Molecular Physiology and Neurobiology, University of Wrocław, 50-335 Wrocław, Poland; (P.D.); (D.R.); (A.G.)
| | - Agnieszka Gizak
- Department of Molecular Physiology and Neurobiology, University of Wrocław, 50-335 Wrocław, Poland; (P.D.); (D.R.); (A.G.)
| | - James A. McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (S.M.A.); (L.S.S.)
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14
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McCubrey JA, Abrams SL, Steelman LS, Cocco L, Ratti S, Martelli AM, Lombardi P, Gizak A, Duda P. APR-246-The Mutant TP53 Reactivator-Increases the Effectiveness of Berberine and Modified Berberines to Inhibit the Proliferation of Pancreatic Cancer Cells. Biomolecules 2022; 12:276. [PMID: 35204775 PMCID: PMC8961609 DOI: 10.3390/biom12020276] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/04/2022] [Accepted: 02/04/2022] [Indexed: 12/10/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most common form of pancreatic cancer. In ~75% of PDAC, the tumor suppressor TP53 gene is mutated. Novel approaches to treat cancer involve compounds called mutant TP53 reactivators. They interact with mutant TP53 proteins and restore some of their growth suppressive properties, but they may also interact with other proteins, e.g., TP63 and TP73. We examined the ability of the TP53 reactivator APR-246 to interact with eleven modified berberine compounds (NAX compounds) in the presence and absence of WT-TP53 in two PDAC cell lines: the MIA-PaCa-2, which has gain of function (GOF) TP53 mutations on both alleles, and PANC-28, which lacks expression of the WT TP53 protein. Our results indicate the TP53 reactivator-induced increase in therapeutic potential of many modified berberines.
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Affiliation(s)
- James Andrew McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (L.S.S.)
| | - Stephen L. Abrams
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (L.S.S.)
| | - Linda S. Steelman
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA; (S.L.A.); (L.S.S.)
| | - Lucio Cocco
- Department of Biomedical and Neuromotor Sciences, Università di Bologna, 40126 Bologna, Italy; (L.C.); (S.R.); (A.M.M.)
| | - Stefano Ratti
- Department of Biomedical and Neuromotor Sciences, Università di Bologna, 40126 Bologna, Italy; (L.C.); (S.R.); (A.M.M.)
| | - Alberto M. Martelli
- Department of Biomedical and Neuromotor Sciences, Università di Bologna, 40126 Bologna, Italy; (L.C.); (S.R.); (A.M.M.)
| | - Paolo Lombardi
- Naxospharma, Via Giuseppe Di Vittorio 70, 20026 Novate Milanese, Italy;
| | - Agnieszka Gizak
- Department of Molecular Physiology and Neurobiology, University of Wrocław, 50-335 Wroclaw, Poland; (A.G.); (P.D.)
| | - Przemysław Duda
- Department of Molecular Physiology and Neurobiology, University of Wrocław, 50-335 Wroclaw, Poland; (A.G.); (P.D.)
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15
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Zhao H, Li X, Yang L, Zhang L, Jiang X, Gao W, Chen P, Cheng Y, Wang F, Liu J. Isorhynchophylline Relieves Ferroptosis-Induced Nerve Damage after Intracerebral Hemorrhage Via miR-122-5p/TP53/SLC7A11 Pathway. Neurochem Res 2021; 46:1981-1994. [PMID: 33942214 DOI: 10.1007/s11064-021-03320-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/29/2021] [Accepted: 04/02/2021] [Indexed: 02/08/2023]
Abstract
Isorhynchophylline (IRN), a component of traditional Chinese herb Uncaria rhynchophylla, possesses strong antioxidant activity. Ferroptosis induced by iron overload causes cell oxidative stress after intracerebral hemorrhage (ICH). Therefore, this study aims to explore the effects of IRN on the ferroptosis following ICH. In this study, mouse hippocampal HT-22 cells were treated with ferric ammonium citrate (FAC) alone or together with IRN, and we found IRN reduced the FAC-induced cell damage. Then, cells were treated with IRN following treatment with FAC after transfection with miR-122-5p inhibitor, and the results showed IRN reduced the FAC-induced decrease of miR-122-5p levels and relieved the ferroptosis by detecting ferroptotic marker proteins, iron ion concentration and oxidative stress level; after transfection with miR-122-5p inhibitor, the protective effects of IRN against FAC-induced ferroptosis in these cells were weakened. TP53 (also known as p53) was verified as a target of miR-122-5p by using dual luciferase reporter assay, and restoration of TP53 attenuated the effects of miR-122-5p on ferroptotic marker proteins expression, iron ion concentration and lipid ROS levels, as well as solute carrier family seven member 11 (SLC7A11) mRNA expression. SLC7A11 siRNA reversed the inhibitory effects of IRN on FAC-induced ferroptosis and oxidative stress levels. Subsequently, IRN increased the mNSS score, and decreased brain water content and EB content in ICH model. Moreover, IRN decreased ferroptosis and lipid ROS level, upregulated the expression of miR-122-5p and SLC7A11 mRNA, and inhibited TP53 expression. Our findings reveal that IRN protects neurocyte from ICH-induced ferroptosis via miR-122-5p/TP53/SLC7A11 pathway, which may provide a potential therapeutic mechanism for ICH.
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Affiliation(s)
- Haikang Zhao
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Xiaoqiang Li
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Lei Yang
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Liang Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Xiaobing Jiang
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Wenwen Gao
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Peng Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Yingying Cheng
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China
| | - Fenglu Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China.
| | - Jianrong Liu
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, No. 167 Fangdong Street, Xi'an, 710038, China.
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16
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Fujihara KM, Corrales Benitez M, Cabalag CS, Zhang BZ, Ko HS, Liu DS, Simpson KJ, Haupt Y, Lipton L, Haupt S, Phillips WA, Clemons NJ. SLC7A11 Is a Superior Determinant of APR-246 (Eprenetapopt) Response than TP53 Mutation Status. Mol Cancer Ther 2021; 20:1858-1867. [PMID: 34315763 DOI: 10.1158/1535-7163.mct-21-0067] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/24/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022]
Abstract
APR-246 (eprenetapopt) is in clinical development with a focus on hematologic malignancies and is promoted as a mutant-p53 reactivation therapy. Currently, the detection of at least one TP53 mutation is an inclusion criterion for patient selection into most APR-246 clinical trials. Preliminary results from our phase Ib/II clinical trial investigating APR-246 combined with doublet chemotherapy [cisplatin and 5-fluorouracil (5-FU)] in metastatic esophageal cancer, together with previous preclinical studies, indicate that TP53 mutation status alone may not be a sufficient biomarker for APR-246 response. This study aims to identify a robust biomarker for response to APR-246. Correlation analysis of the PRIMA-1 activity (lead compound to APR-246) with mutational status, gene expression, protein expression, and metabolite abundance across over 700 cancer cell lines (CCL) was performed. Functional validation and a boutique siRNA screen of over 850 redox-related genes were also conducted. TP53 mutation status was not consistently predictive of response to APR-246. The expression of SLC7A11, the cystine/glutamate transporter, was identified as a superior determinant of response to APR-246. Genetic regulators of SLC7A11, including ATF4, MDM2, wild-type p53, and c-Myc, were confirmed to also regulate cancer-cell sensitivity to APR-246. In conclusion, SLC7A11 expression is a broadly applicable determinant of sensitivity to APR-246 across cancer and should be utilized as the key predictive biomarker to stratify patients for future clinical investigation of APR-246.
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Affiliation(s)
- Kenji M Fujihara
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia. .,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | | | - Carlos S Cabalag
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Division of Cancer Surgery, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Bonnie Z Zhang
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Hyun S Ko
- Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - David S Liu
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Division of Cancer Surgery, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,HPB Surgery, Austin Health, Heidelberg, Victoria, Australia
| | - Kaylene J Simpson
- Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Ygal Haupt
- Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Cancer Therapeutics Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Clinical Pathology, Melbourne Medical School, University of Melbourne, Parkville, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Lara Lipton
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Sue Haupt
- Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Cancer Therapeutics Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Clinical Pathology, Melbourne Medical School, University of Melbourne, Parkville, Victoria, Australia
| | - Wayne A Phillips
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia.,Surgery at St. Vincent's Hospital, The University of Melbourne, Parkville, Victoria, Australia
| | - Nicholas J Clemons
- Gastrointestinal Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia. .,Sir Peter MacCallum Department of Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia
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17
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CX-5461 Enhances the Efficacy of APR-246 via Induction of DNA Damage and Replication Stress in Triple-Negative Breast Cancer. Int J Mol Sci 2021; 22:ijms22115782. [PMID: 34071360 PMCID: PMC8198831 DOI: 10.3390/ijms22115782] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 12/13/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer lacking targeted therapy. Here, we evaluated the anti-cancer activity of APR-246, a P53 activator, and CX-5461, a RNA polymerase I inhibitor, in the treatment of TNBC cells. We tested the efficacy of individual and combination therapy of CX-5461 and APR-246 in vitro, using a panel of breast cancer cell lines. Using publicly available breast cancer datasets, we found that components of RNA Pol I are predominately upregulated in basal-like breast cancer, compared to other subtypes, and this upregulation is associated with poor overall and relapse-free survival. Notably, we found that the treatment of breast cancer cells lines with CX-5461 significantly hampered cell proliferation and synergistically enhanced the efficacy of APR-246. The combination treatment significantly induced apoptosis that is associated with cleaved PARP and Caspase 3 along with Annexin V positivity. Likewise, we also found that combination treatment significantly induced DNA damage and replication stress in these cells. Our data provide a novel combination strategy by utilizing APR-246 in combination CX-5461 in killing TNBC cells that can be further developed into more effective therapy in TNBC therapeutic armamentarium.
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18
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Ceder S, Eriksson SE, Cheteh EH, Dawar S, Corrales Benitez M, Bykov VJN, Fujihara KM, Grandin M, Li X, Ramm S, Behrenbruch C, Simpson KJ, Hollande F, Abrahmsen L, Clemons NJ, Wiman KG. A thiol-bound drug reservoir enhances APR-246-induced mutant p53 tumor cell death. EMBO Mol Med 2021; 13:e10852. [PMID: 33314700 PMCID: PMC7863383 DOI: 10.15252/emmm.201910852] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/12/2022] Open
Abstract
The tumor suppressor gene TP53 is the most frequently mutated gene in cancer. The compound APR-246 (PRIMA-1Met/Eprenetapopt) is converted to methylene quinuclidinone (MQ) that targets mutant p53 protein and perturbs cellular antioxidant balance. APR-246 is currently tested in a phase III clinical trial in myelodysplastic syndrome (MDS). By in vitro, ex vivo, and in vivo models, we show that combined treatment with APR-246 and inhibitors of efflux pump MRP1/ABCC1 results in synergistic tumor cell death, which is more pronounced in TP53 mutant cells. This is associated with altered cellular thiol status and increased intracellular glutathione-conjugated MQ (GS-MQ). Due to the reversibility of MQ conjugation, GS-MQ forms an intracellular drug reservoir that increases availability of MQ for targeting mutant p53. Our study shows that redox homeostasis is a critical determinant of the response to mutant p53-targeted cancer therapy.
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Affiliation(s)
- Sophia Ceder
- Department of Oncology‐PathologyKarolinska InstitutetStockholmSweden
| | - Sofi E Eriksson
- Department of Oncology‐PathologyKarolinska InstitutetStockholmSweden
| | | | - Swati Dawar
- Peter MacCallum Cancer CentreMelbourneVic.Australia
| | | | | | - Kenji M Fujihara
- Peter MacCallum Cancer CentreMelbourneVic.Australia
- Sir Peter MacCallum Department of OncologyThe University of MelbourneParkvilleVic.Australia
| | - Mélodie Grandin
- Department of Clinical PathologyThe University of MelbourneMelbourneVic.Australia
- Victorian Comprehensive Cancer CentreUniversity of Melbourne Centre for Cancer ResearchMelbourneVic.Australia
| | - Xiaodun Li
- MRC Cancer UnitUniversity of CambridgeCambridgeUK
| | - Susanne Ramm
- Peter MacCallum Cancer CentreVictorian Centre for Functional GenomicsMelbourneVic.Australia
| | - Corina Behrenbruch
- Sir Peter MacCallum Department of OncologyThe University of MelbourneParkvilleVic.Australia
- Department of Clinical PathologyThe University of MelbourneMelbourneVic.Australia
| | - Kaylene J Simpson
- Peter MacCallum Cancer CentreVictorian Centre for Functional GenomicsMelbourneVic.Australia
| | - Frédéric Hollande
- Department of Clinical PathologyThe University of MelbourneMelbourneVic.Australia
- Victorian Comprehensive Cancer CentreUniversity of Melbourne Centre for Cancer ResearchMelbourneVic.Australia
| | | | - Nicholas J Clemons
- Peter MacCallum Cancer CentreMelbourneVic.Australia
- Sir Peter MacCallum Department of OncologyThe University of MelbourneParkvilleVic.Australia
| | - Klas G Wiman
- Department of Oncology‐PathologyKarolinska InstitutetStockholmSweden
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19
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Magri J, Gasparetto A, Conti L, Calautti E, Cossu C, Ruiu R, Barutello G, Cavallo F. Tumor-Associated Antigen xCT and Mutant-p53 as Molecular Targets for New Combinatorial Antitumor Strategies. Cells 2021; 10:108. [PMID: 33430127 PMCID: PMC7827209 DOI: 10.3390/cells10010108] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/24/2020] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
The cystine/glutamate antiporter xCT is a tumor-associated antigen that has been newly identified in many cancer types. By participating in glutathione biosynthesis, xCT protects cancer cells from oxidative stress conditions and ferroptosis, and contributes to metabolic reprogramming, thus promoting tumor progression and chemoresistance. Moreover, xCT is overexpressed in cancer stem cells. These features render xCT a promising target for cancer therapy, as has been widely reported in the literature and in our work on its immunotargeting. Interestingly, studies on the TP53 gene have revealed that both wild-type and mutant p53 induce the post-transcriptional down modulation of xCT, contributing to ferroptosis. Moreover, APR-246, a small molecule drug that can restore wild-type p53 function in cancer cells, has been described as an indirect modulator of xCT expression in tumors with mutant p53 accumulation, and is thus a promising drug to use in combination with xCT inhibition. This review summarizes the current knowledge of xCT and its regulation by p53, with a focus on the crosstalk of these two molecules in ferroptosis, and also considers some possible combinatorial strategies that can make use of APR-246 treatment in combination with anti-xCT immunotargeting.
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Affiliation(s)
| | | | | | | | | | | | - Giuseppina Barutello
- Correspondence: (G.B.); (F.C.); Tel.: +39-011-670-6458 (G.B.); +39-011-670-6457 (F.C.)
| | - Federica Cavallo
- Correspondence: (G.B.); (F.C.); Tel.: +39-011-670-6458 (G.B.); +39-011-670-6457 (F.C.)
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20
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Saxena K, Konopleva M. An expert overview of emerging therapies for acute myeloid leukemia: novel small molecules targeting apoptosis, p53, transcriptional regulation and metabolism. Expert Opin Investig Drugs 2020; 29:973-988. [PMID: 32746655 DOI: 10.1080/13543784.2020.1804856] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Acute myeloid leukemia (AML) is an aggressive malignancy of clonal myeloid precursor cells. Curative therapy has classically involved the use of intensive induction chemotherapy followed by consolidation with additional chemotherapy or allogeneic hematopoietic stem cell transplant. For many patients, such an approach is prohibitive because of high treatment-related toxicities. Advancements in the molecular understanding of AML have led to the introduction of new targeted therapies that are changing the treatment landscape for AML. AREAS COVERED We review emerging small molecule inhibitors that have shown preclinical efficacy for the treatment of AML. The compounds discussed affect apoptosis, p53-mediated interactions, transcriptional regulation, and cellular metabolism. We performed a literature search of PubMed and primarily included relevant sources published from 2000 to the present, though earlier sources are also referenced. EXPERT OPINION Most clinical trials for AML currently employ novel targeted therapies that demonstrate promising activity in preclinical models. We anticipate that new small molecule inhibitors will continue to enter the clinical realm and alter the treatment paradigm for AML. In a field where clinical advancement was comparatively slow for many years, it appears that we are now starting to see the rapid growth borne out of the deepening molecular understanding of AML.
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Affiliation(s)
- Kapil Saxena
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
| | - Marina Konopleva
- Department of Leukemia, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
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21
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TRIM16 protects from OGD/R-induced oxidative stress in cultured hippocampal neurons by enhancing Nrf2/ARE antioxidant signaling via downregulation of Keap1. Exp Cell Res 2020; 391:111988. [PMID: 32251645 DOI: 10.1016/j.yexcr.2020.111988] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/05/2020] [Accepted: 03/30/2020] [Indexed: 11/23/2022]
Abstract
Tripartite motif 16 (TRIM16) has emerged as a novel oxidative stress-responsive protein that confers cytoprotective effects by reinforcing the cellular antioxidant system. However, whether TRIM16 is involved in regulating oxidative stress during cerebral ischemia/reperfusion injury remains unclear. In the present study, we aimed to explore the potential function and molecular mechanism of TRIM16 in regulating oxidative stress in neurons induced by oxygen-glucose deprivation/reoxygenation (OGD/R) in vitro. Here, we found that OGD/R exposure resulted in a significant induction of TRIM16 expression in neurons. Depletion of TRIM16 by siRNA-mediated gene knockdown markedly upregulated the sensitivity of neurons to OGD/R-induced apoptosis and reactive oxygen species (ROS) generation. Notably, upregulation of TRIM16 expression significantly alleviated OGD/R-induced apoptosis and ROS generation in neurons. Moreover, TRIM16 overexpression markedly increased nuclear factor erythroid 2-related factor 2 (Nrf2) expression and enhanced Nrf2/antioxidant response element (ARE) activation associated with downregulation of kelch-like ECH-associated protein 1 (Keap1) expression. Restoration of Keap1 significantly reversed the TRIM16-mediated promotion effect on Nrf2/ARE activation. In addition, knockdown of Nrf2 also markedly abrogated the TRIM16-conferred neuroprotective effect in OGD/R-exposed neurons. Taken together, our results of our study demonstrate that induction of TRIM16 confers a cytoprotective effect in OGD/R-exposed neurons through enhancement of Nrf2/ARE antioxidant signaling via downregulation of Keap1. These findings suggest that TRIM16 may play a critical role in cerebral ischemia/reperfusion injury and serve as a promising target for neuroprotection.
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Coban MA, Fraga S, Caulfield TR. Structural And Computational Perspectives of Selectively Targeting Mutant Proteins. Curr Drug Discov Technol 2020; 18:365-378. [PMID: 32160847 DOI: 10.2174/1570163817666200311114819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/24/2020] [Accepted: 01/28/2020] [Indexed: 11/22/2022]
Abstract
Diseases are often caused by mutant proteins. Many drugs have limited effectiveness and/or toxic side effects because of a failure to selectively target the disease-causing mutant variant, rather than the functional wild type protein. Otherwise, the drugs may even target different proteins with similar structural features. Designing drugs that successfully target mutant proteins selectively represents a major challenge. Decades of cancer research have led to an abundance of potential therapeutic targets, often touted to be "master regulators". For many of these proteins, there are no FDA-approved drugs available; for others, off-target effects result in dose-limiting toxicity. Cancer-related proteins are an excellent medium to carry the story of mutant-specific targeting, as the disease is both initiated and sustained by mutant proteins; furthermore, current chemotherapies generally fail at adequate selective distinction. This review discusses some of the challenges associated with selective targeting from a structural biology perspective, as well as some of the developments in algorithm approach and computational workflow that can be applied to address those issues. One of the most widely researched proteins in cancer biology is p53, a tumor suppressor. Here, p53 is discussed as a specific example of a challenging target, with contemporary drugs and methodologies used as examples of burgeoning successes. The oncogene KRAS, which has been described as "undruggable", is another extensively investigated protein in cancer biology. This review also examines KRAS to exemplify progress made towards selective targeting of diseasecausing mutant proteins. Finally, possible future directions relevant to the topic are discussed.
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Affiliation(s)
- Mathew A Coban
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, 32224, United States
| | - Sarah Fraga
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, United States
| | - Thomas R Caulfield
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, 32224, United States
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Li Y, Li N, Shi J, Ahmed T, Liu H, Guo J, Tang W, Guo Y, Zhang Q. Involvement of Glutathione Depletion in Selective Cytotoxicity of Oridonin to p53-Mutant Esophageal Squamous Carcinoma Cells. Front Oncol 2020; 9:1525. [PMID: 32010620 PMCID: PMC6974803 DOI: 10.3389/fonc.2019.01525] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 12/18/2019] [Indexed: 01/19/2023] Open
Abstract
Oridonin, a diterpenoid compound isolated from traditional Chinese medicine Rabdosia rubescens, has shown antitumor effects to esophageal cancer. However, its molecular mechanism is not fully understood, which limits its clinical application. In the present study, we used RNA-seq analysis to check the transcriptome changes after oridonin treatment and we found genes controlling the GSH-ROS system were up-regulated, namely SLC7A11, TXNRD1, TRIM16, SRXN1, GCLM, and GCLC. Furthermore, our data suggest that oridonin significantly increased the production of ROS in EC109 and TE1 cells, which can be inhibited by NAC. Interestingly, oridonin can dramatically reduce intracellular GSH levels in TE1 cells in a concentration and time-dependent manner. In addition, cell death caused by oridonin was strongly inhibited by GSH (1 mM), while GSSG (1 mM) had little effect. At the same time, we also found that oridonin showed selective cytotoxicity to esophageal squamous carcinoma cell with p53 mutation since mut-p53 cells had lower SLC7A11 expression, a component of the cystine/glutamate antiporter. We also found that γ-glutamyl cysteine synthetase inhibitor (BSO) synergizes with oridonin to strongly inhibit EC109 cells at a low dose. These results suggested that the antitumor effects of oridonin are based on its –SH reactivity and glutathione depletion. Esophageal squamous carcinoma cells with p53-mutation showed hypersensitivity to oridonin because of the suppression of SLC7A11 expression by p53 mutation.
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Affiliation(s)
- Yinchao Li
- Key Laboratory of Technology of Drug Preparation, Ministry of Education of China, Zhengzhou, China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Nana Li
- Key Laboratory of Technology of Drug Preparation, Ministry of Education of China, Zhengzhou, China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Jianxiang Shi
- Center for Precision Medicine, Zhengzhou University, Zhengzhou, China
| | - Tanzeel Ahmed
- Key Laboratory of Technology of Drug Preparation, Ministry of Education of China, Zhengzhou, China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Hongmin Liu
- Key Laboratory of Technology of Drug Preparation, Ministry of Education of China, Zhengzhou, China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Jiancheng Guo
- Center for Precision Medicine, Zhengzhou University, Zhengzhou, China
| | - Wenxue Tang
- Center for Precision Medicine, Zhengzhou University, Zhengzhou, China
| | - Yongjun Guo
- The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, China
| | - Qi Zhang
- Key Laboratory of Technology of Drug Preparation, Ministry of Education of China, Zhengzhou, China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,Center for Precision Medicine, Zhengzhou University, Zhengzhou, China
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Sbiera S, Kunz M, Weigand I, Deutschbein T, Dandekar T, Fassnacht M. The New Genetic Landscape of Cushing's Disease: Deubiquitinases in the Spotlight. Cancers (Basel) 2019; 11:cancers11111761. [PMID: 31717455 PMCID: PMC6895825 DOI: 10.3390/cancers11111761] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 10/28/2019] [Accepted: 11/04/2019] [Indexed: 12/20/2022] Open
Abstract
Cushing’s disease (CD) is a rare condition caused by adrenocorticotropic hormone (ACTH)-producing adenomas of the pituitary, which lead to hypercortisolism that is associated with high morbidity and mortality. Treatment options in case of persistent or recurrent disease are limited, but new insights into the pathogenesis of CD are raising hope for new therapeutic avenues. Here, we have performed a meta-analysis of the available sequencing data in CD to create a comprehensive picture of CD’s genetics. Our analyses clearly indicate that somatic mutations in the deubiquitinases are the key drivers in CD, namely USP8 (36.5%) and USP48 (13.3%). While in USP48 only Met415 is affected by mutations, in USP8 there are 26 different mutations described. However, these different mutations are clustering in the same hotspot region (affecting in 94.5% of cases Ser718 and Pro720). In contrast, pathogenic variants classically associated with tumorigenesis in genes like TP53 and BRAF are also present in CD but with low incidence (12.5% and 7%). Importantly, several of these mutations might have therapeutic potential as there are drugs already investigated in preclinical and clinical setting for other diseases. Furthermore, network and pathway analyses of all somatic mutations in CD suggest a rather unified picture hinting towards converging oncogenic pathways.
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Affiliation(s)
- Silviu Sbiera
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, D-97080 Würzburg, Germany; (I.W.); (T.D.); (M.F.)
- Comprehensive Cancer Center Mainfranken, University of Würzburg, D-97080 Würzburg, Germany
- Correspondence:
| | - Meik Kunz
- Chair of Medical Informatics, Friedrich-Alexander University of Erlangen-Nürnberg, D-91058 Erlangen, Germany;
| | - Isabel Weigand
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, D-97080 Würzburg, Germany; (I.W.); (T.D.); (M.F.)
| | - Timo Deutschbein
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, D-97080 Würzburg, Germany; (I.W.); (T.D.); (M.F.)
| | - Thomas Dandekar
- Department of Bioinformatics, Biocenter, University of Würzburg, D-97074 Würzburg, Germany;
| | - Martin Fassnacht
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, D-97080 Würzburg, Germany; (I.W.); (T.D.); (M.F.)
- Comprehensive Cancer Center Mainfranken, University of Würzburg, D-97080 Würzburg, Germany
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Al Diffalha S, Sexton KC, Watson PH, Grizzle WE. The Importance of Human Tissue Bioresources in Advancing Biomedical Research. Biopreserv Biobank 2019; 17:209-212. [PMID: 31188626 PMCID: PMC7061295 DOI: 10.1089/bio.2019.0039] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Medical research advances enabling the realization of precision medicine have relied heavily on the biospecimens provided by bioresources to identify the targets and biomarkers that are the focus of the new generation of more effective molecular-based therapies for specific subtypes of diseases. Through the biospecimens they have distributed, bioresources have permitted subtypes of cancers to be identified and molecular features of these subtypes to be effectively targeted. A prototype example is the human epidermal growth factor receptor type 2 (HER2), which currently is targeted in breast and gastric cancers. In the future, the use of biospecimens from bioresources will continue to increase the understanding of the molecular actions of drugs and how drugs may be more or less active in subpopulations of patients. Although the biospecimen inventories of the initial forms of bioresources may not have always been optimally planned and, therefore, utilized in supporting biomedical research, bioresources are evolving and overall, bioresource inventories and increasingly their prospective collection capabilities will continue to be a critical component of the research infrastructure.
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Affiliation(s)
- Sameer Al Diffalha
- Department of Pathology, The University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Katherine C. Sexton
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Peter H. Watson
- British Columbia Cancer-Victoria Center and University of British Columbia, Victoria, Canada
| | - William E. Grizzle
- Department of Pathology, The University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
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