1
|
Feng YY, Liu JF, Xue Y, Liu D, Wu XZ. Network Pharmacology Based Elucidation of Molecular Mechanisms of Laoke Formula for Treatment of Advanced Non-Small Cell Lung Cancer. Chin J Integr Med 2024:10.1007/s11655-024-3717-5. [PMID: 38941043 DOI: 10.1007/s11655-024-3717-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2023] [Indexed: 06/29/2024]
Abstract
OBJECTIVE To explore the specific pharmacological molecular mechanisms of Laoke Formula (LK) on treating advanced non-small cell lung cancer (NSCLC) based on clinical application, network pharmacology and experimental validation. METHODS Kaplan-Meier method and Cox regression analysis were used to evaluate the survival benefit of Chinese medicine (CM) treatment in 296 patients with NSCLC in Tianjin Medical University Cancer Institute and Hospital from January 2011 to December 2015. The compounds of LK were screened using the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform, and the corresponding targets were performed from Swiss Target Prediction. NSCLC-related targets were obtained from Therapeutic Target Database and Comparative Toxicogenomics Database. Key compounds and targets were identified from the compound-target-disease network and protein-protein interaction (PPI) network analysis, respectively. Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) enrichment analysis were used to predict the potential signaling pathways involved in the treatment of advanced NSCLC with LK. The binding affinities between key ingredients and targets were further verified using molecular docking. Finally, A549 cell proliferation and migration assay were used to evaluate the antitumor activity of LK. Western blot was used to further verify the expression of key target proteins related to the predicted pathways. RESULTS Kaplan-Meier survival analysis showed that the overall survival of the CM group was longer than that of the non-CM group (36 months vs. 26 months), and COX regression analysis showed that LK treatment was an independent favorable prognostic factor (P=0.027). Next, 97 components and 86 potential targets were included in the network pharmacology, KEGG and GO analyses, and the results indicated that LK was associated with proliferation and apoptosis. Moreover, molecular docking revealed a good binding affinity between the key ingredients and targets. In vitro, A549 cell proliferation and migration assay showed that the biological inhibition effect was more obvious with the increase of LK concentration (P<0.05). And decreased expressions of nuclear factor κB1 (NF-κB1), epidermal growth factor receptor (EGFR) and AKT serine/threonine kinase 1 (AKT1) and increased expression of p53 (P<0.05) indicated the inhibitory effect of LK on NSCLC by Western blot. CONCLUSION LK inhibits NSCLC by inhibiting EGFR/phosphoinositide 3-kinase (PI3K)/AKT signaling pathway, NFκB signaling pathway and inducing apoptosis, which provides evidence for the therapeutic mechanism of LK to increase overall survival in NSCLC patients.
Collapse
Affiliation(s)
- Yu-Yu Feng
- Department of Nursing, Tangshan Vocational and Technical College, Tangshan, Hebei Province, 063000, China
| | - Jin-Feng Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yang Xue
- Department of Oncology, Tianjin Medical University General Hospital, Tianjin, 300020, China
| | - Dan Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for China, Tianjin, 300060, China
| | - Xiong-Zhi Wu
- Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, 300100, China.
| |
Collapse
|
2
|
Sengupta S, Singh N, Paul A, Datta D, Chatterjee D, Mukherjee S, Gadhe L, Devi J, Mahesh Y, Jolly MK, Maji SK. p53 amyloid pathology is correlated with higher cancer grade irrespective of the mutant or wild-type form. J Cell Sci 2023; 136:jcs261017. [PMID: 37622400 PMCID: PMC7615089 DOI: 10.1242/jcs.261017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023] Open
Abstract
p53 (also known as TP53) mutation and amyloid formation are long associated with cancer pathogenesis; however, the direct demonstration of the link between p53 amyloid load and cancer progression is lacking. Using multi-disciplinary techniques and 59 tissues (53 oral and stomach cancer tumor tissue samples from Indian individuals with cancer and six non-cancer oral and stomach tissue samples), we showed that p53 amyloid load and cancer grades are highly correlated. Furthermore, next-generation sequencing (NGS) data suggest that not only mutant p53 (e.g. single-nucleotide variants, deletions, and insertions) but wild-type p53 also formed amyloids either in the nucleus (50%) and/or in the cytoplasm in most cancer tissues. Interestingly, in all these cancer tissues, p53 displays a loss of DNA-binding and transcriptional activities, suggesting that the level of amyloid load correlates with the degree of loss and an increase in cancer grades. The p53 amyloids also sequester higher amounts of the related p63 and p73 (also known as TP63 and TP73, respectively) protein in higher-grade tumor tissues. The data suggest p53 misfolding and/or aggregation, and subsequent amyloid formation, lead to loss of the tumor-suppressive function and the gain of oncogenic function, aggravation of which might determine the cancer grade.
Collapse
Affiliation(s)
- Shinjinee Sengupta
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University Noida, Uttar Pradesh, 201303, India
| | - Namrata Singh
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ajoy Paul
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Debalina Datta
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Debdeep Chatterjee
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Semanti Mukherjee
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Laxmikant Gadhe
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Jyoti Devi
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Yeshwanth Mahesh
- Centre for BioSystems Science and Engineering, Indian Institute of Science Bengaluru, Bengaluru, Karnataka 560012, India
| | - Mohit Kumar Jolly
- Centre for BioSystems Science and Engineering, Indian Institute of Science Bengaluru, Bengaluru, Karnataka 560012, India
| | - Samir K. Maji
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| |
Collapse
|
3
|
Liu C, Shi Q, Huang X, Koo S, Kong N, Tao W. mRNA-based cancer therapeutics. Nat Rev Cancer 2023:10.1038/s41568-023-00586-2. [PMID: 37311817 DOI: 10.1038/s41568-023-00586-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/26/2023] [Indexed: 06/15/2023]
Abstract
Due to the fact that mRNA technology allows the production of diverse vaccines and treatments in a shorter time frame and with reduced expense compared to conventional approaches, there has been a surge in the use of mRNA-based therapeutics in recent years. With the aim of encoding tumour antigens for cancer vaccines, cytokines for immunotherapy, tumour suppressors to inhibit tumour development, chimeric antigen receptors for engineered T cell therapy or genome-editing proteins for gene therapy, many of these therapeutics have shown promising efficacy in preclinical studies, and some have even entered clinical trials. Given the evidence supporting the effectiveness and safety of clinically approved mRNA vaccines, coupled with growing interest in mRNA-based therapeutics, mRNA technology is poised to become one of the major pillars in cancer drug development. In this Review, we present in vitro transcribed mRNA-based therapeutics for cancer treatment, including the characteristics of the various types of synthetic mRNA, the packaging systems for efficient mRNA delivery, preclinical and clinical studies, current challenges and future prospects in the field. We anticipate the translation of promising mRNA-based treatments into clinical applications, to ultimately benefit patients.
Collapse
Affiliation(s)
- Chuang Liu
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Qiangqiang Shi
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Xiangang Huang
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Seyoung Koo
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Na Kong
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China.
| | - Wei Tao
- Center for Nanomedicine and Department of Anaesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
4
|
MDMX elevation by a novel Mdmx-p53 interaction inhibitor mitigates neuronal damage after ischemic stroke. Sci Rep 2022; 12:21110. [PMID: 36473920 PMCID: PMC9726886 DOI: 10.1038/s41598-022-25427-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Mdmx and Mdm2 are two major suppressor factors for the tumor suppressor gene p53. In central nervous system, Mdmx suppresses the transcriptional activity of p53 and enhances the binding of Mdm2 to p53 for degradation. But Mdmx dynamics in cerebral infarction remained obscure. Here we investigated the role of Mdmx under ischemic conditions and evaluated the effects of our developed small-molecule Protein-Protein Interaction (PPI) inhibitors, K-181, on Mdmx-p53 interactions in vivo and in vitro. We found ischemic stroke decreased Mdmx expression with increased phosphorylation of Mdmx Serine 367, while Mdmx overexpression by AAV-Mdmx showed a neuroprotective effect on neurons. The PPI inhibitor, K-181 attenuated the neurological deficits by increasing Mdmx expression in post-stroke mice brain. Additionally, K-181 selectively inhibited HDAC6 activity and enhanced tubulin acetylation. Our findings clarified the dynamics of Mdmx in cerebral ischemia and provide a clue for the future pharmaceutic development of ischemic stroke.
Collapse
|
5
|
Li J, Long J, Zhang J, Liu N, Yan B, Tang L, Chen X, Peng C. Novel chloroquine derivative suppresses melanoma cell growth by DNA damage through increasing ROS levels. J Cell Mol Med 2022; 26:2579-2593. [PMID: 35332658 PMCID: PMC9077290 DOI: 10.1111/jcmm.17260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 11/30/2022] Open
Abstract
Melanoma is a fatal cancer with a significant feature of resistance to traditional chemotherapeutic drugs and radiotherapy. A mutation in the kinase BRAF is observed in more than 66% of metastatic melanoma cases. Therefore, there is an urgent need to develop new BRAF-mutant melanoma inhibitors. High-dose chloroquine has been reported to have antitumour effects, but it often induces dose-limiting toxicity. In this study, a series of chloroquine derivatives were synthesized, and lj-2-66 had the best activity and was selected for further investigation. Furthermore, the anti-BRAF-mutant melanoma effect and mechanism of this compound were explored. CCK-8 and colony formation assays indicated that lj-2-66 significantly inhibited the proliferation of BRAF-mutant melanoma cells. Flow cytometry revealed that lj-2-66 induced G2/M arrest in melanoma cells and promoted apoptosis. Furthermore, lj-2-66 increased the level of ROS in melanoma cells and induced DNA damage. Interestingly, lj-2-66 also played a similar role in BRAF inhibitor-resistant melanoma cells. In summary, we found a novel chloroquine derivative, lj-2-66, that increased the level of ROS in melanoma cells and induced DNA damage, thus leading to G2/M arrest and apoptosis. These findings indicated that lj-2-66 may become a potential therapeutic drug for melanoma harbouring BRAF mutations.
Collapse
Affiliation(s)
- Jiaoduan Li
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Jing Long
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Jianglin Zhang
- Department of Dermatology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated HospitalSouthern University of Science and TechnologyShenzhenChina
| | - Nian Liu
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Bei Yan
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Ling Tang
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Xiang Chen
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| | - Cong Peng
- Department of DermatologyXiangya Hospital, Central South UniversityChangshaChina
- Hunan Key Laboratory of Skin Cancer and PsoriasisXiangya HospitalChangshaChina
- Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalChangshaChina
- National Clinical Research Center for Geriatric DisordersXiangya Hospital, Central South UniversityChangshaChina
| |
Collapse
|
6
|
Wang Y, Zhang G, Meng Q, Huang S, Guo P, Leng Q, Sun L, Liu G, Huang X, Liu J. Precise tumor immune rewiring via synthetic CRISPRa circuits gated by concurrent gain/loss of transcription factors. Nat Commun 2022; 13:1454. [PMID: 35304449 PMCID: PMC8933567 DOI: 10.1038/s41467-022-29120-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 03/01/2022] [Indexed: 12/14/2022] Open
Abstract
Reinvigoration of antitumor immunity has recently become the central theme for the development of cancer therapies. Nevertheless, the precise delivery of immunotherapeutic activities to the tumors remains challenging. Here, we explore a synthetic gene circuit-based strategy for specific tumor identification, and for subsequently engaging immune activation. By design, these circuits are assembled from two interactive modules, i.e., an oncogenic TF-driven CRISPRa effector, and a corresponding p53-inducible off-switch (NOT gate), which jointly execute an AND-NOT logic for accurate tumor targeting. In particular, two forms of the NOT gate are developed, via the use of an inhibitory sgRNA or an anti-CRISPR protein, with the second form showing a superior performance in gating CRISPRa by p53 loss. Functionally, the optimized AND-NOT logic circuit can empower a highly specific and effective tumor recognition/immune rewiring axis, leading to therapeutic effects in vivo. Taken together, our work presents an adaptable strategy for the development of precisely delivered immunotherapy. “Reinvigoration of antitumor immunity has recently become the central theme for the development of cancer therapies. Here the authors present an adaptable gene circuit to harness the CRISPRa for tumorlocalized immune activation.”
Collapse
Affiliation(s)
- Yafeng Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center at Medical School of Nanjing University, Nanjing, 210061, China.,Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Guiquan Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center at Medical School of Nanjing University, Nanjing, 210061, China
| | - Qingzhou Meng
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 78 Hengzhigang Road, Guangzhou, 510095, China
| | - Shisheng Huang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Panpan Guo
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Qibin Leng
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 78 Hengzhigang Road, Guangzhou, 510095, China
| | - Lingyun Sun
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Geng Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center at Medical School of Nanjing University, Nanjing, 210061, China. .,Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, 210093, China.
| | - Xingxu Huang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China. .,Zhejiang Laboratory, Hangzhou, 311100, China.
| | - Jianghuai Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center at Medical School of Nanjing University, Nanjing, 210061, China. .,Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, 210093, China.
| |
Collapse
|
7
|
Grumetti L, Lombardi R, Iannelli F, Pucci B, Avallone A, Di Gennaro E, Budillon A. Epigenetic Approaches to Overcome Fluoropyrimidines Resistance in Solid Tumors. Cancers (Basel) 2022; 14:cancers14030695. [PMID: 35158962 PMCID: PMC8833539 DOI: 10.3390/cancers14030695] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Fluoropyrimidines represent the backbone of many combination chemotherapy regimens for the treatment of solid cancers but are still associated with toxicity and mechanisms of resistance. In this review, we focused on the epigenetic modifiers histone deacetylase inhibitors (HDACis) and on their ability to regulate specific genes and proteins involved in the fluoropyrimidine metabolism and resistance mechanisms. We presented emerging preclinical and clinical studies, highlighting the mechanisms by which HDACis can prevent/overcome the resistance and/or enhance the therapeutic efficacy of fluoropyrimidines, potentially reducing their toxicity, and ultimately improving the overall survival of cancer patients. Abstract Although fluoropyrimidines were introduced as anticancer agents over 60 years ago, they are still the backbone of many combination chemotherapy regimens for the treatment of solid cancers. Like other chemotherapeutic agents, the therapeutic efficacy of fluoropyrimidines can be affected by drug resistance and severe toxicities; thus, novel therapeutic approaches are required to potentiate their efficacy and overcome drug resistance. In the last 20 years, the deregulation of epigenetic mechanisms has been shown to contribute to cancer hallmarks. Histone modifications play an important role in directing the transcriptional machinery and therefore represent interesting druggable targets. In this review, we focused on histone deacetylase inhibitors (HDACis) that can increase antitumor efficacy and overcome resistance to fluoropyrimidines by targeting specific genes or proteins. Our preclinical data showed a strong synergistic interaction between HDACi and fluoropyrimidines in different cancer models, but the clinical studies did not seem to confirm these observations. Most likely, the introduction of increasingly complex preclinical models, both in vitro and in vivo, cannot recapitulate human complexity; however, our analysis of clinical studies revealed that most of them were designed without a mechanistic approach and, importantly, without careful patient selection.
Collapse
Affiliation(s)
- Laura Grumetti
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
| | - Rita Lombardi
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
| | - Federica Iannelli
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
| | - Biagio Pucci
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
| | - Antonio Avallone
- Experimental Clinical Abdominal Oncology Unit, Istituto Nazionale Tumori di Napoli IRCCS “Fondazione Pascale”, 80131 Naples, Italy;
| | - Elena Di Gennaro
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
- Correspondence: (E.D.G.); (A.B.); Tel.: +39-081-590-3342 (E.D.G.); +39-081-590-3292 (A.B.)
| | - Alfredo Budillon
- Experimetnal Pharmacology Unit-Laboratory of Naples and Mercogliano (AV), Istituto Nazionale Tumori IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy; (L.G.); (R.L.); (F.I.); (B.P.)
- Correspondence: (E.D.G.); (A.B.); Tel.: +39-081-590-3342 (E.D.G.); +39-081-590-3292 (A.B.)
| |
Collapse
|
8
|
Zheng BH, He ZX, Zhang J, Ma JJ, Zhang HW, Zhu W, Shao ZM, Ni XJ. The Biological Function of TUSC7/miR-1224-3p Axis in Triple-Negative Breast Cancer. Cancer Manag Res 2021; 13:5763-5774. [PMID: 34305410 PMCID: PMC8296971 DOI: 10.2147/cmar.s305865] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/17/2021] [Indexed: 12/31/2022] Open
Abstract
Background Triple-negative breast cancers (TNBC), comprising about 20% of breast cancers, have a poor prognosis. Currently, there is no effective target therapy for TNBC. LncRNA TUSC7 has been identified as a tumor suppressor in osteosarcoma and colorectal cancer. In this study, we investigated the clinical significance and the biological function of TUSC7 in breast cancer. Methods We retrospectively evaluated the expression level and clinical significance of TUSC7 in 90 paired breast cancer tissues and normal tissues. The proliferation, migration, and invasion assays were performed to investigate the biological function of TUSC7 in breast cancer. Finally, microarray, a luciferase reporter assay, and quantitative real-time polymerase chain reaction (qPCR) were used to explore the potential underlying mechanism of tumor suppressor role of TUSC7. Results Low TUSC7 expression was found to be an independent prognostic factor of poor overall survival (OS) in TNBC patients. Ectopic expression of TUSC7 inhibited tumor cell growth both in vitro and in vivo. TUSC7 overexpression significantly promoted the sensitivity of MDA-MB-468 cells to paclitaxel and carboplatin. In terms of the mechanism, TUSC7 might perform its biological function through binding with miR-1224-3P and regulating its expression level. Besides, genes in cell cycle pathways, such as BUB3 (budding uninhibited by benzimidazoles 3) and TGF-ß (targeting transforming growth factor β) pathways were downregulated, and genes involved in the MAPK (mitogen-activated protein kinase) (TGFBR2, transforming growth factor-beta receptor 2), PI3K-AKT (phosphoinositide 3-kinase- AKT serine/threonine kinase 1) and NF-κB (nuclear factor-kappa B subunit) pathways were upregulated in TUSC7 knockdown MDA-MB-231 cells. Conclusion The low TUSC7 expression is an independent prognostic factor of poor OS of TNBC patients. TUSC7 might inhibit breast cancer cell growth and metastasis both in vitro and vivo through binding with miR-1224-3P and regulating MAPK, PI3K/AKT, and NF-κB signaling pathways.
Collapse
Affiliation(s)
- Bo-Hao Zheng
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China.,Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| | - Zhi-Xian He
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, 226001, People's Republic of China
| | - Juan Zhang
- Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Fudan University, Shanghai, 200032, People's Republic of China
| | - Jing-Jing Ma
- State Key Laboratory of Reproductive Medicine, Department of Breast Surgery, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, 210004, People's Republic of China
| | - Hong-Wei Zhang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China.,Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| | - Wei Zhu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China.,Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| | - Zhi-Min Shao
- Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Cancer Center and Cancer Institute, Fudan University, Shanghai, 200032, People's Republic of China
| | - Xiao-Jian Ni
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China.,Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| |
Collapse
|
9
|
Zhou J, Guo H, Liu L, Hao S, Guo Z, Zhang F, Gao Y, Wang Z, Zhang W. Construction of co-expression modules related to survival by WGCNA and identification of potential prognostic biomarkers in glioblastoma. J Cell Mol Med 2021; 25:1633-1644. [PMID: 33449451 PMCID: PMC7875936 DOI: 10.1111/jcmm.16264] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/29/2020] [Accepted: 12/22/2020] [Indexed: 12/19/2022] Open
Abstract
Glioblastoma (GBM) is a malignant brain tumour with poor prognosis. The potential pathogenesis and therapeutic target are still need to be explored. Herein, TCGA expression profile data and clinical information were downloaded, and the WGCNA was conducted. Hub genes which closely related to poor prognosis of GBM were obtained. Further, the relationship between the genes of interest and prognosis of GBM, and immune microenvironment were analysed. Patients from TCGA were divided into high‐ and low‐risk group. WGCNA was applied to the high‐ and low‐risk group and the black module with the lowest preservation was identified which could distinguish the prognosis level of these two groups. The top 10 hub genes which were closely related to poor prognosis of patients were obtained. GO analysis showed the biological process of these genes mainly enriched in: Cell cycle, Progesterone‐mediated oocyte maturation and Oocyte meiosis. CDCA5 and CDCA8 were screened out as the genes of interest. We found that their expression levels were closely related to overall survival. The difference analysis resulted from the TCGA database proved both CDCA5 and CDCA8 were highly expressed in GBM. After transfection of U87‐MG cells with small interfering RNA, it revealed that knockdown of the CDCA5 and CDCA8 could influence the biological behaviours of proliferation, clonogenicity and apoptosis of GBM cells. Then, single‐gene analysis was performed. CDCA5 and CDCA8 both had good correlations with genes that regulate cell cycle in the p53 signalling pathway. Moreover, it revealed that high amplification of CDCA5 was correlated with CD8+ T cells while CDCA8 with CD4+ T cells in GBM. These results might provide new molecular targets and intervention strategy for GBM.
Collapse
Affiliation(s)
- Jing Zhou
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China.,Shanxi University of Chinese Medicine, Taiyuan, China
| | - Hao Guo
- Department of Anesthesiology, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Likun Liu
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China
| | - Shulan Hao
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China
| | - Zhi Guo
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China
| | - Fupeng Zhang
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China
| | - Yu Gao
- Department of Oncology, Shanxi Province Academy of Traditional Chinese Medicine, Shanxi Province Hospital of Traditional Chinese Medicine, Taiyuan, China
| | - Zhi Wang
- Department of Anesthesiology, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Weiwei Zhang
- Department of Anesthesiology, Shanxi Provincial People's Hospital, Taiyuan, China
| |
Collapse
|
10
|
Falcicchio M, Ward JA, Macip S, Doveston RG. Regulation of p53 by the 14-3-3 protein interaction network: new opportunities for drug discovery in cancer. Cell Death Discov 2020; 6:126. [PMID: 33298896 PMCID: PMC7669891 DOI: 10.1038/s41420-020-00362-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/02/2020] [Accepted: 10/23/2020] [Indexed: 01/17/2023] Open
Abstract
Most cancers evolve to disable the p53 pathway, a key tumour suppressor mechanism that prevents transformation and malignant cell growth. However, only ~50% exhibit inactivating mutations of p53, while in the rest its activity is suppressed by changes in the proteins that modulate the pathway. Therefore, restoring p53 activity in cells in which it is still wild type is a highly attractive therapeutic strategy that could be effective in many different cancer types. To this end, drugs can be used to stabilise p53 levels by modulating its regulatory pathways. However, despite the emergence of promising strategies, drug development has stalled in clinical trials. The need for alternative approaches has shifted the spotlight to the 14-3-3 family of proteins, which strongly influence p53 stability and transcriptional activity through direct and indirect interactions. Here, we present the first detailed review of how 14-3-3 proteins regulate p53, with special emphasis on the mechanisms involved in their binding to different members of the pathway. This information will be important to design new compounds that can reactivate p53 in cancer cells by influencing protein-protein interactions. The intricate relationship between the 14-3-3 isoforms and the p53 pathway suggests that many potential drug targets for p53 reactivation could be identified and exploited to design novel antineoplastic therapies with a wide range of applications.
Collapse
Affiliation(s)
- Marta Falcicchio
- Leicester Institute for Structural and Chemical Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK
- School of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Jake A Ward
- Leicester Institute for Structural and Chemical Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK
- Mechanisms of Cancer and Ageing Lab, Department of Molecular and Cell Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Salvador Macip
- Mechanisms of Cancer and Ageing Lab, Department of Molecular and Cell Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK.
- FoodLab, Faculty of Health Sciences, Universitat Oberta de Catalunya, Barcelona, Spain.
| | - Richard G Doveston
- Leicester Institute for Structural and Chemical Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK.
- School of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK.
| |
Collapse
|
11
|
Bieg‐Bourne CC, Okamura R, Kurzrock R. Concordance between TP53 alterations in blood and tissue: impact of time interval, biopsy site, cancer type and circulating tumor DNA burden. Mol Oncol 2020; 14:1242-1251. [PMID: 32187847 PMCID: PMC7266274 DOI: 10.1002/1878-0261.12672] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/13/2020] [Accepted: 03/16/2020] [Indexed: 02/06/2023] Open
Abstract
We examined the impact of spatial, temporal, histologic, and quantitative factors on concordance between TP53 alterations in tissue DNA vs in circulating tumor DNA (ctDNA). Four hundred and thirty-three patients underwent next-generation sequencing (NGS) in which both tissue and blood samples were evaluated. TP53 was detected in 258 of 433 patients (59.6%); 215 had tissue TP53 alterations (49.7%); 159, ctDNA (36.7%); and 116, both tissue and ctDNA (27.8%). Overall concordance rate between ctDNA and tissue biopsies for TP53 alterations was 67.2%; positive concordance was 45.0%. Overall concordance for TP53 did not vary among patients with ≤ 2 months vs > 6 months between test samples; however, positive concordance trended higher when time intervals between test samples were shorter, suggesting that the lack of difference in overall concordance may be due to the large number of negative/negative tests. There was a trend toward higher overall concordance based on biopsy site (metastatic vs primary) (P = 0.07) and significantly higher positive concordance if the tissue biopsy site was a metastatic lesion (P = 0.03). Positive concordance significantly decreased in noncolorectal cancer patients vs colorectal cancer patients (P = 0.02). Finally, higher %ctDNA was associated with higher concordance rates between blood and tissue (P < 0.001). Taken together, these data indicate that both blood and tissue DNA sequencing are necessary to evaluate the full scope of TP53 alterations, and that concordance rates may be related to multiple factors including, but not limited to, amount of ctDNA, histologic context, and site of tissue biopsy.
Collapse
Affiliation(s)
- Cheyennedra C. Bieg‐Bourne
- Center for Personalized Cancer TherapyMoores Cancer CenterUniversity of California San DiegoLa JollaCAUSA
| | - Ryosuke Okamura
- Center for Personalized Cancer TherapyMoores Cancer CenterUniversity of California San DiegoLa JollaCAUSA
| | - Razelle Kurzrock
- Center for Personalized Cancer TherapyMoores Cancer CenterUniversity of California San DiegoLa JollaCAUSA
| |
Collapse
|
12
|
Xia Y, Wang L, Ma X, Li X. Investigation on the Genomic Characterization of Uterine Sarcoma for rAd- p53 Combined with Chemotherapy Treatment. Hum Gene Ther 2020; 31:881-890. [PMID: 32013587 DOI: 10.1089/hum.2019.305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The aim is to investigate the genomic characterization of uterine sarcoma for rAd-p53 (Gendicine®) combined with chemotherapy treatment. We recently published an article on 12 cases of uterine sarcomas, which were treated with rAd-p53 combined with chemotherapy. We found that rAd-p53 combined with chemotherapy is effective for various uterine sarcomas. Pretreatment pathological specimens of four uterine sarcoma patients were collected from the above recent clinical research and numbered 1-4A/B. Tumor samples were subjected to targeted sequencing by using a 416 genes panel. We profiled the mutation spectrum and tumor mutation burden in the tumors, identified mutated genes, and explored their gene function. We also verified the p53 protein expression using immunohistochemistry. We identified a total of 30 mutated genes that were found from the next-generation sequencing test results. The average number of mutated genes was up to seven in the five samples. TP53 gene was mutated in two of the four patients, No. 1 and No. 4B. They are c.C833G (p.P278R) missense mutation and a point mutation (C141*) that result in a premature stop codon. We did not find a mutated TP53 gene in the other two cases, but we identified mutated genes, including CREBBP, LYN, CDKN2A, and JAK2, which were located upstream of the TP53 gene; they may have an impact on TP53. We also identified 11 additional genes which are involved in p53-related signaling pathways or have interaction with p53. Compared to solid tumor mutational burden (TMB) distribution, none of their TMB was ranking in the top 25%. Mutant p53 protein expression was positive in two specimens. Our results demonstrated that the TP53 signaling pathway plays an important role in uterine sarcoma tumorigenesis. TP53 and the upstream genes such as CREBBP, LYN, CDKN2A, and JAK2 may be involved in the genomic characterization for rAd-p53 (Gendicine) combined with chemotherapy in uterine sarcoma. Besides, the average amount of mutated genes from every patient is large.
Collapse
Affiliation(s)
- Yu Xia
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lei Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiaolin Ma
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiuqin Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| |
Collapse
|
13
|
Fifield BA, Qemo I, Kirou E, Cardiff RD, Porter LA. The atypical cyclin-like protein Spy1 overrides p53-mediated tumour suppression and promotes susceptibility to breast tumourigenesis. Breast Cancer Res 2019; 21:140. [PMID: 31829284 PMCID: PMC6907270 DOI: 10.1186/s13058-019-1211-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 10/15/2019] [Indexed: 01/09/2023] Open
Abstract
Background Breast cancer is the most common cancer to affect women and one of the leading causes of cancer-related deaths. Proper regulation of cell cycle checkpoints plays a critical role in preventing the accumulation of deleterious mutations. Perturbations in the expression or activity of mediators of cell cycle progression or checkpoint activation represent important events that may increase susceptibility to the onset of carcinogenesis. The atypical cyclin-like protein Spy1 was isolated in a screen for novel genes that could bypass the DNA damage response. Clinical data demonstrates that protein levels of Spy1 are significantly elevated in ductal and lobular carcinoma of the breast. We hypothesized that elevated Spy1 would override protective cell cycle checkpoints and support the onset of mammary tumourigenesis. Methods We generated a transgenic mouse model driving expression of Spy1 in the mammary epithelium. Mammary development, growth characteristics and susceptibility to tumourigenesis were studied. In vitro studies were conducted to investigate the relationship between Spy1 and p53. Results We found that in the presence of wild-type p53, Spy1 protein is held ‘in check’ via protein degradation, representing a novel endogenous mechanism to ensure protected checkpoint control. Regulation of Spy1 by p53 is at the protein level and is mediated in part by Nedd4. Mutation or abrogation of p53 is sufficient to allow for accumulation of Spy1 levels resulting in mammary hyperplasia. Sustained elevation of Spy1 results in elevated proliferation of the mammary gland and susceptibility to tumourigenesis. Conclusions This mouse model demonstrates for the first time that degradation of the cyclin-like protein Spy1 is an essential component of p53-mediated tumour suppression. Targeting cyclin-like protein activity may therefore represent a mechanism of re-sensitizing cells to important cell cycle checkpoints in a therapeutic setting.
Collapse
Affiliation(s)
- Bre-Anne Fifield
- Department of Biological Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Ingrid Qemo
- Department of Biological Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Evie Kirou
- Department of Biological Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Robert D Cardiff
- Center of Comparative Medicine, University of California, Davis, CA, USA
| | - Lisa Ann Porter
- Department of Biological Sciences, University of Windsor, Windsor, ON, N9B 3P4, Canada.
| |
Collapse
|
14
|
Singh S, Kumar M, Kumar S, Sen S, Upadhyay P, Bhattacharjee S, M N, Tomar VS, Roy S, Dutt A, Kundu TK. The cancer-associated, gain-of-function TP53 variant P152Lp53 activates multiple signaling pathways implicated in tumorigenesis. J Biol Chem 2019; 294:14081-14095. [PMID: 31366730 PMCID: PMC6755804 DOI: 10.1074/jbc.ra118.007265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 06/21/2019] [Indexed: 02/05/2023] Open
Abstract
TP53 is the most frequently mutated tumor suppressor gene in many cancers, yet biochemical characterization of several of its reported mutations with probable biological significance have not been accomplished enough. Specifically, missense mutations in TP53 can contribute to tumorigenesis through gain-of-function of biochemical and biological properties that stimulate tumor growth. Here, we identified a relatively rare mutation leading to a proline to leucine substitution (P152L) in TP53 at the very end of its DNA-binding domain (DBD) in a sample from an Indian oral cancer patient. Although the P152Lp53 DBD alone bound to DNA, the full-length protein completely lacked binding ability at its cognate DNA motifs. Interestingly, P152Lp53 could efficiently tetramerize, and the mutation had only a limited impact on the structure and stability of full-length p53. Significantly, when we expressed this variant in a TP53-null cell line, it induced cell motility, proliferation, and invasion compared with a vector-only control. Also, enhanced tumorigenic potential was observed when P152Lp53-expressing cells were xenografted into nude mice. Investigating the effects of P152Lp53 expression on cellular pathways, we found that it is associated with up-regulation of several pathways, including cell-cell and cell-extracellular matrix signaling, epidermal growth factor receptor signaling, and Rho-GTPase signaling, commonly active in tumorigenesis and metastasis. Taken together, our findings provide a detailed account of the biochemical and cellular alterations associated with the cancer-associated P152Lp53 variant and establish it as a gain-of-function TP53 variant.
Collapse
Affiliation(s)
- Siddharth Singh
- Transcription and Disease Laboratory, Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | - Manoj Kumar
- Transcription and Disease Laboratory, Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | | | - Shrinka Sen
- Transcription and Disease Laboratory, Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | - Pawan Upadhyay
- Integrated Cancer Genomics Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Center, Navi Mumbai, India
| | - Sayan Bhattacharjee
- Department of Structural Biology and Bioinformatics, Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Naveen M
- BioCOS Life Sciences Pvt. Ltd., Bengaluru, India
| | - Vivek Singh Tomar
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560012, India
| | - Siddhartha Roy
- Department of Biophysics, Bose Institute, Kolkata 700054, India
| | - Amit Dutt
- Integrated Cancer Genomics Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Center, Navi Mumbai, India
| | - Tapas K Kundu
- Transcription and Disease Laboratory, Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| |
Collapse
|
15
|
Srinivas US, Tan BWQ, Vellayappan BA, Jeyasekharan AD. ROS and the DNA damage response in cancer. Redox Biol 2019; 25:101084. [PMID: 30612957 PMCID: PMC6859528 DOI: 10.1016/j.redox.2018.101084] [Citation(s) in RCA: 987] [Impact Index Per Article: 197.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/12/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022] Open
Abstract
Reactive oxygen species (ROS) are a group of short-lived, highly reactive, oxygen-containing molecules that can induce DNA damage and affect the DNA damage response (DDR). There is unequivocal pre-clinical and clinical evidence that ROS influence the genotoxic stress caused by chemotherapeutics agents and ionizing radiation. Recent studies have provided mechanistic insight into how ROS can also influence the cellular response to DNA damage caused by genotoxic therapy, especially in the context of Double Strand Breaks (DSBs). This has led to the clinical evaluation of agents modulating ROS in combination with genotoxic therapy for cancer, with mixed success so far. These studies point to context dependent outcomes with ROS modulator combinations with Chemotherapy and radiotherapy, indicating a need for additional pre-clinical research in the field. In this review, we discuss the current knowledge on the effect of ROS in the DNA damage response, and its clinical relevance.
Collapse
Affiliation(s)
| | - Bryce W Q Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | | | - Anand D Jeyasekharan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Haematology-Oncology, National University Hospital, Singapore.
| |
Collapse
|
16
|
Patro BS, Bhattacharyya R, Gupta P, Bandyopadhyay S, Chattopadhyay S. Mechanism of coralyne-mediated DNA photo-nicking process. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 194:140-148. [PMID: 30954873 DOI: 10.1016/j.jphotobiol.2019.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 02/05/2019] [Accepted: 03/20/2019] [Indexed: 01/24/2023]
Abstract
Previously, we reported that coralyne and UVA combination sensitized a wide range of human carcinoma cells regardless of their p53 status. The coralyne induced photosensitization of cancer cells may be clinically attractive, as mutation in the p53 gene is prevalent in many types of tumors. Coralyne mediated photosensitization of cancer cells is attributable to its ability to cause extensive DNA single strand breaks (SSB). However, the precise mechanism of coralyne induced DNA photo-damage is not yet known. The present study was aimed to understand the hitherto unknown mechanism of the coralyne-induced DNA photo-cleavage process. To this end, we compared the DNA photo-nicking properties of berberine, jatrorrhizine and coralyne, and deciphered involvement of the photochemical processes in the photo-nuclease action of coralyne using absorption and electron spin resonance spectroscopy, high performance liquid chromatography and mass spectroscopy (MS) techniques in conjunction with relevant in vitro studies with plasmid DNA. In association with UVA, coralyne, but not berberine and jatrorrhizine induced significant nicking of plasmid DNA via an O2-independent photo-chemical process. The Job's plot of our spectrophotometric data suggested that one coralyne molecule remains intercalated with two DNA base pairs (i. e., 1:2) and starts forming aggregates beyond this molar ratio. The DNA photo-nicking by the combination of coralyne and UVA (designated as CUVA) was primarily caused by the coralyne aggregates without any significant contribution from the DNA-intercalated coralyne monomer.
Collapse
Affiliation(s)
- Birija Sankar Patro
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India.
| | | | - Pooja Gupta
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | | | - Subrata Chattopadhyay
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| |
Collapse
|
17
|
Carriere PP, Kapur N, Mir H, Ward AB, Singh S. Cinnamtannin B-1 inhibits cell survival molecules and induces apoptosis in colon cancer. Int J Oncol 2018; 53:1442-1454. [PMID: 30066888 PMCID: PMC6086629 DOI: 10.3892/ijo.2018.4489] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/23/2018] [Indexed: 11/06/2022] Open
Abstract
Colon cancer patients receiving chemotherapy continue to be burdened with therapeutic failure and adverse side effects, yielding a need to develop more effective treatments. The present study investigates Cinnamtannin B-1 (CTB-1) as a potential low-toxicity therapeutic alternative for colon cancer. CTB-1-treated DLD-1, COLO 201 and HCT-116 (WT p53 and p53 null) colon cancer cells and CCD 841 CoN normal colon epithelial cells were assessed for changes in survival using MTT assay. The effects of CTB-1 on cell cycle progression and the apoptosis of colon cancer cells were measured using flow cytometry and/or immunofluorescence. The expression profiles of cell survival molecules, particularly apoptotic proteins, in the colon cancer cells were evaluated following CTB-1 treatment via antibody array, then validated by western blot analysis. Additionally, the potential synergy between CTB-1 and 5-fluorouracil (5-FU), a conventional chemotherapeutic agent used in the treatment of colon cancer, against colon cancer cells was assessed using MTT assay and Calcusyn software. The results revealed that CTB-1 signifi-cantly decreased the survival of the DLD-1, COLO 201 and HCT-116 cells in a time and/or dose-dependent manner, with minimal cytotoxicity to normal colon cells. CTB-1 treatment was shown to induce cell cycle arrest and apoptosis of DLD-1 and COLO 201 cells. Of note, CTB-1 modulated the expression of several cell survival molecules, which tend to be deregulated in colon cancer, including p53, a key transcription factor involved in apoptosis. The downstream regulation of Bcl-2 and Bak expression, as well as cytochrome c release into the cytosol, was also observed following CTB-1 treatment. Furthermore, CTB-1 was shown to significantly enhance the potency of 5-FU via a synergistic drug interaction. This study reveals for the first time, to the best of our knowledge, the ability of CTB-1 to decrease the survival of colon cancer cells through pro-apoptotic mechanisms and display synergy with conventional chemotherapy, demonstrating the potential therapeutic benefit of CTB-1 in colon cancer.
Collapse
Affiliation(s)
- Patrick P Carriere
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Neeraj Kapur
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Hina Mir
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Ashley B Ward
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Shailesh Singh
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| |
Collapse
|
18
|
Shanmugam MK, Arfuso F, Arumugam S, Chinnathambi A, Jinsong B, Warrier S, Wang LZ, Kumar AP, Ahn KS, Sethi G, Lakshmanan M. Role of novel histone modifications in cancer. Oncotarget 2018; 9:11414-11426. [PMID: 29541423 PMCID: PMC5834259 DOI: 10.18632/oncotarget.23356] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/01/2017] [Indexed: 01/02/2023] Open
Abstract
Oncogenesis is a multistep process mediated by a variety of factors including epigenetic modifications. Global epigenetic post-translational modifications have been detected in almost all cancers types. Epigenetic changes appear briefly and do not involve permanent changes to the primary DNA sequence. These epigenetic modifications occur in key oncogenes, tumor suppressor genes, and transcription factors, leading to cancer initiation and progression. The most commonly observed epigenetic changes include DNA methylation, histone lysine methylation and demethylation, histone lysine acetylation and deacetylation. However, there are several other novel post-translational modifications that have been observed in recent times such as neddylation, sumoylation, glycosylation, phosphorylation, poly-ADP ribosylation, ubiquitination as well as transcriptional regulation and these have been briefly discussed in this article. We have also highlighted the diverse epigenetic changes that occur during the process of tumorigenesis and described the role of histone modifications that can occur on tumor suppressor genes as well as oncogenes, which regulate tumorigenesis and can thus form the basis of novel strategies for cancer therapy.
Collapse
Affiliation(s)
- Muthu K. Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Frank Arfuso
- Stem Cell and Cancer Biology Laboratory, School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | - Surendar Arumugam
- Institute of Molecular and Cell Biology, A*STAR, Biopolis Drive, Proteos, Singapore, Singapore
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Bian Jinsong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sudha Warrier
- Division of Cancer Stem Cells and Cardiovascular Regeneration, School of Regenerative Medicine, Manipal Academy of Higher Education (MAHE), Bangalore, India
| | - Ling Zhi Wang
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Curtin Medical School, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
- National University Cancer Institute, National University Health System, Singapore, Singapore
- Department of Biological Sciences, University of North Texas, Denton, Texas, USA
| | - Kwang Seok Ahn
- College of Korean Medicine, Kyung Hee University, Dongdaemun-gu, Seoul, Korea
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Manikandan Lakshmanan
- Institute of Molecular and Cell Biology, A*STAR, Biopolis Drive, Proteos, Singapore, Singapore
- Department of Pathology, National University Hospital Singapore, Singapore, Singapore
| |
Collapse
|
19
|
In vitro study of FUZ as a novel potential therapeutic target in non-small-cell lung cancer. Life Sci 2018; 197:91-100. [PMID: 29421438 DOI: 10.1016/j.lfs.2018.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/01/2018] [Accepted: 02/05/2018] [Indexed: 12/15/2022]
Abstract
FUZ is regarded as a planar cell polarity effector that controls multiple cellular processes during vertebrate development. However, the role of FUZ in tumor biology remains poorly studied. Our purpose of this study is to discover the physiological effects and mechanism of FUZ in non-small-cell lung cancer (NSCLC) in vitro. With the help of bioinformatics analysis, we noticed that the expression level of FUZ negatively correlates with prognosis of NSCLC patients. Exogenous FUZ expression markedly promoted cell proliferation of NSCLC cells. The phosphorylation of Erk1/2, STAT3 and related signaling molecules were induced activated after FUZ over-expression. FUZ also plays an important role in cell motility by regulating cell signaling pathways and inducing epithelial to mesenchymal transition (EMT). FUZ promotes EMT along with the up-regulation of N-cadherin, vimentin, Zeb1, Twist1 and decreased level of E-cadherin. Furthermore, we also carried out FUZ directed siRNA treatments to prove the above observations. Knockdown of FUZ resulted in delayed cell growth as well as impaired cell migration and reversed EMT phonotype. Importantly, we reported for the first time that FUZ is a BNIP3-interacting protein. Loss of FUZ resulted in decreased BNIP3 protein level, but no influence on BNIP3 mRNA level, suggesting weakened stability of BNIP3 protein. Overall, our results in vitro show that FUZ is responsible for NSCLC progression and metastasis, suggesting that FUZ can be a potential therapeutic target for NSCLC.
Collapse
|
20
|
Furukawa H, Makino T, Yamasaki M, Tanaka K, Miyazaki Y, Takahashi T, Kurokawa Y, Nakajima K, Takiguchi S, Mori M, Doki Y. PRIMA-1 induces p53-mediated apoptosis by upregulating Noxa in esophageal squamous cell carcinoma with TP53 missense mutation. Cancer Sci 2017; 109:412-421. [PMID: 29168598 PMCID: PMC5797815 DOI: 10.1111/cas.13454] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 11/13/2017] [Accepted: 11/15/2017] [Indexed: 12/15/2022] Open
Abstract
TP53 is associated with the resistance of cytotoxic treatment and patient prognosis, and the mutation rate of TP53 in esophageal squamous cell carcinoma (ESCC) is extraordinarily high, at over 90%. PRIMA‐1 (p53 re‐activation and induction of massive apoptosis) has recently been reported to restore the function of mutant TP53; however, its antitumor effect and mechanism in ESCC remain unclear. After evaluating the TP53 mutation status of a panel of 11 ESCC cell lines by Sanger sequencing, we assessed the in vitro effect of PRIMA‐1 administration on cells with different TP53 status by conducting cell viability and apoptosis assays. The expression levels of proteins in p53‐related pathways were examined by Western blotting, while knockdown studies were conducted to investigate the mechanism underlying PRIMA‐1's function. An ESCC xenograft model was further used to evaluate the therapeutic effect of PRIMA‐1 in vivo. PRIMA‐1 markedly inhibited cell growth and induced apoptosis by upregulating Noxa expression in ESCC cell lines with TP53 missense mutations, whereas no apoptosis was induced in ESCC with wild‐type TP53 and TP53 with frameshift and nonsense mutations. Importantly, the knockdown of Noxa canceled the apoptosis induced by PRIMA treatment in ESCC cell lines with TP53 missense mutations. PRIMA‐1 administration, compared with placebo, showed a significant antitumor effect by inducing Noxa in the xenograft model of an ESCC cell line with a TP53 missense mutation. PRIMA‐1 exhibits a significant antitumor effect, inducing massive apoptosis through the upregulation of Noxa in ESCC with TP53 missense mutations.
Collapse
Affiliation(s)
- Haruna Furukawa
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Tomoki Makino
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Makoto Yamasaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Koji Tanaka
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Yasuhiro Miyazaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Tsuyoshi Takahashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Yukinori Kurokawa
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Kiyokazu Nakajima
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Shuji Takiguchi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Masaki Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita City, Osaka, Japan
| |
Collapse
|
21
|
The Tumor Suppressor p53 in Mucosal Melanoma of the Head and Neck. Genes (Basel) 2017; 8:genes8120384. [PMID: 29236030 PMCID: PMC5748702 DOI: 10.3390/genes8120384] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 12/17/2022] Open
Abstract
Despite worldwide prevention programs, the incidence for cutaneous melanoma is continuously increasing. Mucosal melanoma (MM) represents a rare but highly aggressive phenotype of common melanoma with predilection in the sinonasal system. Far away from ultraviolet sun exposure, the molecular mechanisms underlying tumorigenesis and the highly aggressive clinical behavior are poorly understood. In many solid malignomas of the head and neck region, p53 tumor suppressor functions as oncogene due to p53 protein stabilizing mutation. Interestingly, the vast majority of MM demonstrates constitutively expressed p53 protein, with protein stabilizing mutations being rare. Abrogated activation of p53 target genes results in derogation of the apoptotic signal cascade and contributes to the strong resistance against chemotherapeutic agents activating p53 dependent apoptosis. The current review illustrates the role of p53 and its pathway in MM.
Collapse
|
22
|
Genipin suppresses colorectal cancer cells by inhibiting the Sonic Hedgehog pathway. Oncotarget 2017; 8:101952-101964. [PMID: 29254217 PMCID: PMC5731927 DOI: 10.18632/oncotarget.21882] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 09/04/2017] [Indexed: 01/12/2023] Open
Abstract
Genipin, a major component of Gardenia jasminoides Ellis fruit, has been shown to inhibit the growth of gastric, prostate, and breast cancers. However, the anti-proliferative activity of genipin in colorectal cancer (CRC) has not been characterized. Herein, we demonstrated that genipin inhibits the proliferation of CRC cells and that genipin suppressed the Hedgehog pathway. Further investigation showed that p53 and NOXA protein levels were increased during inhibition of Hedgehog pathway-mediated apoptosis in CRC cells. We also showed that p53 modulated the expression of NOXA during genipin-induced apoptosis, and suppression via SMO also played a role in this process. Subsequently, GLI1 was ubiquitinated by the E3 ligase PCAF. In a xenograft tumor model, genipin suppressed tumor growth, which was also associated with Hedgehog inactivation. Taken together, these results suggest that genipin induces apoptosis through the Hedgehog signaling pathway by suppressing p53. These findings reveal a novel regulatory mechanism involving Hedgehog/p53/NOXA signaling in the modulation of CRC cell apoptosis and tumor-forming defects.
Collapse
|
23
|
Leroy B, Ballinger ML, Baran-Marszak F, Bond GL, Braithwaite A, Concin N, Donehower LA, El-Deiry WS, Fenaux P, Gaidano G, Langerød A, Hellstrom-Lindberg E, Iggo R, Lehmann-Che J, Mai PL, Malkin D, Moll UM, Myers JN, Nichols KE, Pospisilova S, Ashton-Prolla P, Rossi D, Savage SA, Strong LC, Tonin PN, Zeillinger R, Zenz T, Fraumeni JF, Taschner PEM, Hainaut P, Soussi T. Recommended Guidelines for Validation, Quality Control, and Reporting of TP53 Variants in Clinical Practice. Cancer Res 2017; 77:1250-1260. [PMID: 28254861 DOI: 10.1158/0008-5472.can-16-2179] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/12/2016] [Accepted: 11/16/2016] [Indexed: 12/21/2022]
Abstract
Accurate assessment of TP53 gene status in sporadic tumors and in the germline of individuals at high risk of cancer due to Li-Fraumeni Syndrome (LFS) has important clinical implications for diagnosis, surveillance, and therapy. Genomic data from more than 20,000 cancer genomes provide a wealth of information on cancer gene alterations and have confirmed TP53 as the most commonly mutated gene in human cancer. Analysis of a database of 70,000 TP53 variants reveals that the two newly discovered exons of the gene, exons 9β and 9γ, generated by alternative splicing, are the targets of inactivating mutation events in breast, liver, and head and neck tumors. Furthermore, germline rearrange-ments in intron 1 of TP53 are associated with LFS and are frequently observed in sporadic osteosarcoma. In this context of constantly growing genomic data, we discuss how screening strategies must be improved when assessing TP53 status in clinical samples. Finally, we discuss how TP53 alterations should be described by using accurate nomenclature to avoid confusion in scientific and clinical reports. Cancer Res; 77(6); 1250-60. ©2017 AACR.
Collapse
Affiliation(s)
- Bernard Leroy
- Sorbonne Université, UPMC Univ Paris 06, Paris, France
| | - Mandy L Ballinger
- Cancer Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia
| | - Fanny Baran-Marszak
- Hôpital Avicenne, Assistance Publique-Hôpitaux De Paris, Bobigny, Service D'H ematologie Biologique, France
| | - Gareth L Bond
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford, United Kingdom
| | - Antony Braithwaite
- Dept of Pathology, School of Medicine, University of Otago, Dunedin, New Zealand.,Children's Medical Research Institute, University of Sydney, Westmead NSW, Australia
| | - Nicole Concin
- Department of Gynecology and Obstetrics, Innsbruck Medical University, Innsbruck, Austria
| | | | - Wafik S El-Deiry
- Department of Hematology/Oncology and Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Pierre Fenaux
- Service d'hématologie séniors, Hôpital St Louis/Université Paris 7, 1 avenue Claude Vellefaux, Paris, France
| | - Gianluca Gaidano
- Division of Hematology, Department of Translational Medicine, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Anita Langerød
- Department of Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Eva Hellstrom-Lindberg
- Karolinska Institute, Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Richard Iggo
- Bergonié Cancer Institute University of Bordeaux 229 cours de l'Argonne 33076 Bordeaux, France
| | | | - Phuong L Mai
- Cancer Genetics Program, Magee Womens Hospital, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - David Malkin
- Division of Hematology/Oncology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Ute M Moll
- Department of Pathology, Stony Brook University, Stony Brook, New York
| | - Jeffrey N Myers
- The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kim E Nichols
- Department of Oncology, Division of Cancer Predisposition, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Sarka Pospisilova
- Masaryk University, CEITEC - Molecular Medicine and University Hospital Brno, Department of Internal Medicine - Hematology and Oncology, Brno, Czech Republic
| | - Patricia Ashton-Prolla
- Universidade Federal do Rio Grande do Sul (UFRGS) e Serviço deGenética Médica-HCPA, Rua Ramiro Barcelos, Porto Alegre, Brasil
| | - Davide Rossi
- Division of Hematology, Department of Translational Medicine, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Sharon A Savage
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Louise C Strong
- The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Patricia N Tonin
- Departments of Medicine and Human Genetics, McGill University and Cancer Research Program, The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Robert Zeillinger
- Molecular Oncology Group, Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | - Thorsten Zenz
- University of Heidelberg, Department of Medicine V, Heidelberg, Germany; Department of Translational Oncology, National Center for Tumor Diseases and German Cancer Research Center (dkfz), Heidelberg, Germany
| | - Joseph F Fraumeni
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Peter E M Taschner
- Generade Centre of Expertise Genomics and University of Applied Sciences Leiden, Leiden, the Netherlands
| | - Pierre Hainaut
- Institut Albert Bonniot, Inserm 823, Université Grenoble Alpes, Rond Point de la Chantourne, La Tronche, France
| | - Thierry Soussi
- Sorbonne Université, UPMC Univ Paris 06, Paris, France. .,Department of Oncology-Pathology, Karolinska Institutet, Cancer Center Karolinska, Stockholm, Sweden.,INSERM, U1138, Centre de Recherche des Cordeliers, Paris, France
| |
Collapse
|
24
|
Zhao N, Zhang G, He M, Huang H, Cao L, Yin A, Wang P, Wang L. SZRD1 is a Novel Protein that Functions as a Potential Tumor Suppressor in Cervical Cancer. J Cancer 2017; 8:2132-2141. [PMID: 28819415 PMCID: PMC5559976 DOI: 10.7150/jca.18806] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 04/10/2017] [Indexed: 12/16/2022] Open
Abstract
SZRD1 is a novel gene screened out by high-throughput platform, and so far there exists no systematic function reports. The purpose of our study is to discover the function and mechanism of this novel human gene. Bioinformatics analysis indicates that SZRD1 is a highly conserved intracellular protein. After overexpression of SZRD1, we found that SZRD1 could arrest the cell cycle in G2 phase and play a role in inhibiting cell proliferation and inducing apoptosis. In contrast, after knockdown of endogenous SZRD1, we concluded that it could promote cell proliferation. The mechanism investigations showed that overexpression of SZRD1 could downregulate the phosphorylation of ERK1/2, AKT, STAT3 and downstream signaling molecules, and then arrest the cells in G2 phase by upregulating P21. Tissue microarray analysis showed that the expression of SZRD1 was downregulated in cervical squamous cell carcinomas compared with normal squamous epithelium, and the ratio of downregulation correlated with the stage of the cancer. Overall, we clarified the function of this novel protein SZRD1, which indicated it may be a potential novel tumor suppressor in cervical cancer.
Collapse
Affiliation(s)
- Ning Zhao
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Guoying Zhang
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Minwei He
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - He Huang
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Lulu Cao
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Ang Yin
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Pingzhang Wang
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| | - Lu Wang
- Center for Human Disease Genomics, Department of Immunology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, P. R. China.,Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Science, Peking University, Beijing 100191, P. R. China
| |
Collapse
|
25
|
Prabakaran PJ, Javaid AM, Swick AD, Werner LR, Nickel KP, Sampene E, Hu R, Ong IM, Bruce JY, Hartig GK, Wieland AM, Canon J, Harari PM, Kimple RJ. Radiosensitization of Adenoid Cystic Carcinoma with MDM2 Inhibition. Clin Cancer Res 2017; 23:6044-6053. [PMID: 28659312 DOI: 10.1158/1078-0432.ccr-17-0969] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/24/2017] [Accepted: 06/23/2017] [Indexed: 01/12/2023]
Abstract
Purpose: Adenoid cystic carcinoma (ACC) is a rare cancer arising from the major or minor salivary gland tissues of the head and neck. There are currently no approved systemic agents or known radiosensitizers for ACC. Unlike the more common head and neck squamous cell carcinomas that frequently harbor TP53 mutations, ACCs contain TP53 mutations at a rate of <5%, rendering them an attractive target for MDM2 inhibition.Experimental Design: We report the successful establishment and detailed characterization of a TP53-WT ACC patient-derived xenograft (PDX), which retained the histologic features of the original patient tumor. We evaluated this model for response to the MDM2 inhibitor AMG 232 as monotherapy and in combination with radiotherapy.Results: AMG 232 monotherapy induced modest tumor growth inhibition, and radiation monotherapy induced a transient tumor growth delay in a dose-dependent fashion. Strikingly, combination treatment of AMG 232 with radiotherapy (including low-dose radiotherapy of 2 Gy/fraction) induced dramatic tumor response and high local tumor control rates 3 months following treatment. Posttreatment analysis revealed that although both AMG 232 and radiotherapy alone induced TP53 tumor-suppressive activities, combination therapy amplified this response with potent induction of apoptosis after combination treatment.Conclusions: These data identify that MDM2 inhibition can provide potent radiosensitization in TP53-WT ACC. In light of the absence of effective systemic agents for ACC, the powerful response profile observed here suggests that clinical trial evaluation of this drug/radiotherapy combination may be warranted to improve local control in this challenging malignancy. Clin Cancer Res; 23(20); 6044-53. ©2017 AACR.
Collapse
Affiliation(s)
- Prashanth J Prabakaran
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Amal M Javaid
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Adam D Swick
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Lauryn R Werner
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Kwangok P Nickel
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Emmanuel Sampene
- Department of Biostatistics, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Rong Hu
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,Department of Pathology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Irene M Ong
- Department of Biostatistics, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Justine Y Bruce
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,Department of Medicine, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Gregory K Hartig
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,Department of Surgery, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Aaron M Wieland
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,Department of Surgery, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Jude Canon
- Oncology Research, Amgen, Inc., Thousand Oaks, California
| | - Paul M Harari
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin.,University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| | - Randall J Kimple
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin. .,University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health Madison, Madison, Wisconsin
| |
Collapse
|
26
|
Han M, Xu J, Ren Y. Compromise in competition between free energy and binding effect of intrinsically disordered protein p53 C-terminal domain. MOLECULAR SIMULATION 2016. [DOI: 10.1080/08927022.2016.1237023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mengzhi Han
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, R.C. China
- University of Chinese Academy of Sciences, Beijing, R.C. China
| | - Ji Xu
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, R.C. China
| | - Ying Ren
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, R.C. China
| |
Collapse
|
27
|
Pinard A, Miltgen M, Blanchard A, Mathieu H, Desvignes JP, Salgado D, Fabre A, Arnaud P, Barré L, Krahn M, Grandval P, Olschwang S, Zaffran S, Boileau C, Béroud C, Collod-Béroud G. Actionable Genes, Core Databases, and Locus-Specific Databases. Hum Mutat 2016; 37:1299-1307. [PMID: 27600092 DOI: 10.1002/humu.23112] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 08/31/2016] [Indexed: 01/04/2023]
Abstract
Adoption of next-generation sequencing (NGS) in a diagnostic context raises numerous questions with regard to identification and reports of secondary variants (SVs) in actionable genes. To better understand the whys and wherefores of these questioning, it is necessary to understand how they are selected during the filtering process and how their proportion can be estimated. It is likely that SVs are underestimated and that our capacity to label all true SVs can be improved. In this context, Locus-specific databases (LSDBs) can be key by providing a wealth of information and enabling classifying variants. We illustrate this issue by analyzing 318 SVs in 23 actionable genes involved in cancer susceptibility syndromes identified through sequencing of 572 participants selected for a range of atherosclerosis phenotypes. Among these 318 SVs, only 43.4% are reported in Human Gene Mutation Database (HGMD) Professional versus 71.4% in LSDB. In addition, 23.9% of HGMD Professional variants are reported as pathogenic versus 4.8% for LSDB. These data underline the benefits of LSDBs to annotate SVs and minimize overinterpretation of mutations thanks to their efficient curation process and collection of unpublished data.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Aurélie Fabre
- Aix Marseille Univ, INSERM, GMGF, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, 13385, France
| | - Pauline Arnaud
- AP-HP, Hôpital Bichat, Centre National de Référence pour le syndrome de Marfan et apparentés, Paris, France.,UFR de Médecine, Diderot Paris Université Paris 7, Paris, France.,Inserm, U1148, Paris, France
| | - Laura Barré
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
| | - Martin Krahn
- Aix Marseille Univ, INSERM, GMGF, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, 13385, France
| | - Philippe Grandval
- Aix Marseille Univ, INSERM, GMGF, Marseille, France.,AP-HM, Hôpital de la Timone, Gastroentérologie, Marseille, France
| | - Sylviane Olschwang
- Aix Marseille Univ, INSERM, GMGF, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, 13385, France.,Hôpital Clairval, Ramsay Générale de Santé, Marseille, France.,Hôpital Européen, Fondation Ambroise Paré, Marseille, France
| | | | - Catherine Boileau
- AP-HP, Hôpital Bichat, Centre National de Référence pour le syndrome de Marfan et apparentés, Paris, France.,UFR de Médecine, Diderot Paris Université Paris 7, Paris, France.,Inserm, U1148, Paris, France
| | - Christophe Béroud
- Aix Marseille Univ, INSERM, GMGF, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, 13385, France
| | | |
Collapse
|
28
|
Xie W, Yuan S, Sun Z, Li Y. Long noncoding and circular RNAs in lung cancer: advances and perspectives. Epigenomics 2016; 8:1275-87. [DOI: 10.2217/epi-2016-0036] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Better understanding and management of lung cancer are needed. Although much has been learned from known protein coding genes, long noncoding RNAs (lncRNAs), a relatively new and fast evolving large family of transcripts, have recently generated much attention for new discoveries. LncRNAs play critical regulatory functions and are emerging as new players in tumorigenesis and phenotypic determinators of lung cancer. In this review, we highlight the latest development of lncRNAs, including circular RNAs in lung cancer. We start with well-characterized lncRNAs and circular RNAs as an oncogene or tumor suppressor and then extend our discussion on the impact of SNPs in lncRNA on its functions and lung cancer risk and the clinical applications of lncRNAs as biomarkers and therapeutic targets.
Collapse
Affiliation(s)
- Weijia Xie
- Department of Epidemiology, College of Preventive Medicine, Third Military Medical University, Chongqing, People's Republic of China
| | - Shuai Yuan
- Department of Epidemiology, College of Preventive Medicine, Third Military Medical University, Chongqing, People's Republic of China
| | - Zhifu Sun
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Yafei Li
- Department of Epidemiology, College of Preventive Medicine, Third Military Medical University, Chongqing, People's Republic of China
| |
Collapse
|
29
|
Secondary interaction between MDMX and p53 core domain inhibits p53 DNA binding. Proc Natl Acad Sci U S A 2016; 113:E2558-63. [PMID: 27114532 DOI: 10.1073/pnas.1603838113] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The MDMX oncoprotein is an important regulator of tumor suppressor p53 activity during embryonic development. Despite sequence homology to the ubiquitin E3 ligase MDM2, MDMX depletion activates p53 without significant increase in p53 level, implicating a degradation-independent mechanism. We present evidence that MDMX inhibits the sequence-specific DNA binding activity of p53. This function requires the cooperation between MDMX and CK1α, and phosphorylation of S289 on MDMX. Depletion of MDMX or CK1α increases p53 DNA binding without stabilization of p53. A proteolytic fragment release assay revealed that in the MDMX-p53 complex, the MDMX acidic domain and RING domain interact stably with the p53 DNA binding domain. These interactions are referred to as secondary interactions because they only occur after the canonical-specific binding between the MDMX and p53 N termini, but exhibit significant binding stability in the mature complex. CK1α cooperates with MDMX to inhibit p53 DNA binding by further stabilizing the MDMX acidic domain and p53 core domain interaction. These results suggest that secondary intermolecular interaction is important in p53 regulation by MDMX, which may represent a common phenomenon in complexes containing multidomain proteins.
Collapse
|
30
|
Stracquadanio G, Wang X, Wallace M, Grawenda AM, Zhang P, Hewitt J, Zeron-Medina J, Castro-Giner F, Tomlinson IP, Goding CR, Cygan KJ, Fairbrother WG, Thomas LF, Sætrom P, Gemignani F, Landi S, Schuster-Boeckler B, Bell DA, Bond GL. The importance of p53 pathway genetics in inherited and somatic cancer genomes. Nat Rev Cancer 2016; 16:251-65. [PMID: 27009395 PMCID: PMC6854702 DOI: 10.1038/nrc.2016.15] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Decades of research have shown that mutations in the p53 stress response pathway affect the incidence of diverse cancers more than mutations in other pathways. However, most evidence is limited to somatic mutations and rare inherited mutations. Using newly abundant genomic data, we demonstrate that commonly inherited genetic variants in the p53 pathway also affect the incidence of a broad range of cancers more than variants in other pathways. The cancer-associated single nucleotide polymorphisms (SNPs) of the p53 pathway have strikingly similar genetic characteristics to well-studied p53 pathway cancer-causing somatic mutations. Our results enable insights into p53-mediated tumour suppression in humans and into p53 pathway-based cancer surveillance and treatment strategies.
Collapse
Affiliation(s)
- Giovanni Stracquadanio
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Xuting Wang
- Environmental Genomics Group, Genome Integrity and Structural Biology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
| | - Marsha Wallace
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Anna M. Grawenda
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Ping Zhang
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Juliet Hewitt
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Jorge Zeron-Medina
- Vall d’Hebron University Hospital, Oncology Department, Passeig de la Vall D’Hebron 119, 08035 Barcelona, Spain
| | - Francesc Castro-Giner
- Molecular and Population Genetics Laboratory, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Ian P. Tomlinson
- Molecular and Population Genetics Laboratory, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Colin R. Goding
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Kamil J. Cygan
- Center for Computational Molecular Biology, Brown University, 115 Waterman Street, Providence, RI 02912, USA
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, 70 Ship Street, Providence, RI 02903, USA
| | - William G. Fairbrother
- Center for Computational Molecular Biology, Brown University, 115 Waterman Street, Providence, RI 02912, USA
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, 70 Ship Street, Providence, RI 02903, USA
| | - Laurent F. Thomas
- Department of Cancer Research and Molecular Medicine, Norwegian, University of Science and Technology, NO-7491 Trondheim, Norway
| | - Pål Sætrom
- Department of Computer and Information Science, Norwegian, University of Science and Technology, NO-7491 Trondheim, Norway
- Department of Cancer Research and Molecular Medicine, Norwegian, University of Science and Technology, NO-7491 Trondheim, Norway
| | - Frederica Gemignani
- Genetics- Department of Biology, University of Pisa, Via Derna, 1, 56126 Pisa - Italy
| | - Stefano Landi
- Genetics- Department of Biology, University of Pisa, Via Derna, 1, 56126 Pisa - Italy
| | - Benjamin Schuster-Boeckler
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Douglas A. Bell
- Environmental Genomics Group, Genome Integrity and Structural Biology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
- Corresponding authors: . The Ludwig Institute for Cancer Research, The Nuffield Department of Clinical Medicine, The University of Oxford, Oxford, The United Kingdom. . Environmental Genomics Group, Genomic Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, MD C3-03, NIEHS, PO Box 12233, Research Triangle Park, NC 27709, The United States of America
| | - Gareth L. Bond
- Ludwig Institute for Cancer Research, University of Oxford, Nuffield Department of Clinical Medicine, Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
- Corresponding authors: . The Ludwig Institute for Cancer Research, The Nuffield Department of Clinical Medicine, The University of Oxford, Oxford, The United Kingdom. . Environmental Genomics Group, Genomic Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, MD C3-03, NIEHS, PO Box 12233, Research Triangle Park, NC 27709, The United States of America
| |
Collapse
|
31
|
Qian R, Cao Y, Long YT. Dual-Targeting Nanovesicles for In Situ Intracellular Imaging of and Discrimination between Wild-type and Mutant p53. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510142] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
32
|
Dual-Targeting Nanovesicles for In Situ Intracellular Imaging of and Discrimination between Wild-type and Mutant p53. Angew Chem Int Ed Engl 2015; 55:719-23. [DOI: 10.1002/anie.201510142] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Indexed: 12/22/2022]
|
33
|
Low expression of long noncoding RNA PANDAR predicts a poor prognosis of non-small cell lung cancer and affects cell apoptosis by regulating Bcl-2. Cell Death Dis 2015; 6:e1665. [PMID: 25719249 PMCID: PMC4669812 DOI: 10.1038/cddis.2015.30] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/09/2015] [Accepted: 01/14/2015] [Indexed: 12/23/2022]
Abstract
Recently, a novel class of transcripts, long noncoding RNAs (lncRNAs), is involved in diseases including cancer. Here, we investigated the the role of lncRNA PANDAR in the progression of non-small cell lung carcinoma (NSCLC). PANDAR, interacting with NF-YA, was generally downregulated in NSCLC tissues. In a cohort of 140 NSCLC patients, decreased PANDAR expression was negatively correlated with greater tumor size (P<0.001) and advanced TNM stage (P=0.002). Moreover, PANDAR could serve as an independent predictor for overall survival in NSCLC (P=0.015). Further experiments demonstrated that PANDAR expression was induced by p53, and chromatin immunoprecipitation (ChIP) assays confirmed that PANDAR was a direct transcriptional target of p53 in NSCLC cells. PANDAR overexpression significantly repressed the proliferation in vitro and in vivo. We also showed that PANDAR-mediated growth regulation is in part due to the transcriptional modulation of Bcl-2 by interacting with NF-YA, thus affecting NSCLC cell apoptosis. To our knowledge, this is the first report which showed the role of PANDAR in the progression of NSCLC. The p53/PANDAR/NF-YA/Bcl-2 interaction might serve as targets for NSCLC diagnosis and therapy.
Collapse
|
34
|
Leroy B, Anderson M, Soussi T. TP53 mutations in human cancer: database reassessment and prospects for the next decade. Hum Mutat 2014; 35:672-88. [PMID: 24665023 DOI: 10.1002/humu.22552] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 03/04/2014] [Indexed: 12/18/2022]
Abstract
More than 50% of human tumors carry TP53 gene mutations and in consequence more than 45,000 somatic and germline mutations have been gathered in the UMD TP53 database (http://p53.fr). Analyses of these mutations have been invaluable for bettering our knowledge on the structure-function relationships within the TP53 protein and the high degree of heterogeneity of the various TP53 mutants in human cancer. In this review, we discuss how with the release of the sequences of thousands of tumor genomes issued from high-throughput sequencing, the description of novel TP53 mutants is now reaching a plateau indicating that we are close to the full set of mutants that target the elusive tumor-suppressive activity of this protein. We performed an extensive and thorough analysis of the TP53 mutation database, focusing particularly on specific sets of mutations that were overlooked in the past because of their low frequencies, for example, synonymous mutations, splice mutations, or mutations-targeting residues subject to posttranslational modifications. We also discuss the evolution of the statistical methods used to differentiate TP53 passenger mutations and artifactual data from true mutations, a process vital to the release of an accurate TP53 mutation database that will in turn be an invaluable tool for both clinicians and researchers.
Collapse
Affiliation(s)
- Bernard Leroy
- Université Pierre et Marie Curie-Paris 6, Paris, 75005, France
| | | | | |
Collapse
|
35
|
Rational design of small-molecule stabilizers of spermine synthase dimer by virtual screening and free energy-based approach. PLoS One 2014; 9:e110884. [PMID: 25340632 PMCID: PMC4207787 DOI: 10.1371/journal.pone.0110884] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 09/17/2014] [Indexed: 11/19/2022] Open
Abstract
Snyder-Robinson Syndrome (SRS) is a rare mental retardation disorder which is caused by the malfunctioning of an enzyme, the spermine synthase (SMS), which functions as a homo-dimer. The malfunctioning of SMS in SRS patients is associated with several identified missense mutations that occur away from the active site. This investigation deals with a particular SRS-causing mutation, the G56S mutation, which was shown computationally and experimentally to destabilize the SMS homo-dimer and thus to abolish SMS enzymatic activity. As a proof-of-concept, we explore the possibility to restore the enzymatic activity of the malfunctioning SMS mutant G56S by stabilizing the dimer through small molecule binding at the mutant homo-dimer interface. For this purpose, we designed an in silico protocol that couples virtual screening and a free binding energy-based approach to identify potential small-molecule binders on the destabilized G56S dimer, with the goal to stabilize it and thus to increase SMS G56S mutant activity. The protocol resulted in extensive list of plausible stabilizers, among which we selected and tested 51 compounds experimentally for their capability to increase SMS G56S mutant enzymatic activity. In silico analysis of the experimentally identified stabilizers suggested five distinctive chemical scaffolds. This investigation suggests that druggable pockets exist in the vicinity of the mutation sites at protein-protein interfaces which can be used to alter the disease-causing effects by small molecule binding. The identified chemical scaffolds are drug-like and can serve as original starting points for development of lead molecules to further rescue the disease-causing effects of the Snyder-Robinson syndrome for which no efficient treatment exists up to now.
Collapse
|
36
|
Pflaum J, Schlosser S, Müller M. p53 Family and Cellular Stress Responses in Cancer. Front Oncol 2014; 4:285. [PMID: 25374842 PMCID: PMC4204435 DOI: 10.3389/fonc.2014.00285] [Citation(s) in RCA: 192] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 10/03/2014] [Indexed: 11/30/2022] Open
Abstract
p53 is an important tumor suppressor gene, which is stimulated by cellular stress like ionizing radiation, hypoxia, carcinogens, and oxidative stress. Upon activation, p53 leads to cell-cycle arrest and promotes DNA repair or induces apoptosis via several pathways. p63 and p73 are structural homologs of p53 that can act similarly to the protein and also hold functions distinct from p53. Today more than 40 different isoforms of the p53 family members are known. They result from transcription via different promoters and alternative splicing. Some isoforms have carcinogenic properties and mediate resistance to chemotherapy. Therefore, expression patterns of the p53 family genes can offer prognostic information in several malignant tumors. Furthermore, the p53 family constitutes a potential target for cancer therapy. Small molecules (e.g., Nutlins, RITA, PRIMA-1, and MIRA-1 among others) have been objects of intense research interest in recent years. They restore pro-apoptotic wild-type p53 function and were shown to break chemotherapeutic resistance. Due to p53 family interactions small molecules also influence p63 and p73 activity. Thus, the members of the p53 family are key players in the cellular stress response in cancer and are expected to grow in importance as therapeutic targets.
Collapse
Affiliation(s)
- Johanna Pflaum
- Department of Internal Medicine I, University Hospital Regensburg , Regensburg , Germany
| | - Sophie Schlosser
- Department of Internal Medicine I, University Hospital Regensburg , Regensburg , Germany
| | - Martina Müller
- Department of Internal Medicine I, University Hospital Regensburg , Regensburg , Germany
| |
Collapse
|
37
|
Abstract
The ubiquitin proteasome pathway is critical in restraining the activities of the p53 tumor suppressor. This review by Pant and Lozano focuses on ubiquitination as a mechanism for regulating p53 stability and function and reviews current findings from in vivo models that evaluate the importance of the ubiquitin proteasome system in regulating p53. The ubiquitin proteasome pathway is critical in restraining the activities of the p53 tumor suppressor. Numerous E3 and E4 ligases regulate p53 levels. Additionally, deubquitinating enzymes that modify p53 directly or indirectly also impact p53 function. When alterations of these proteins result in increased p53 activity, cells arrest in the cell cycle, senesce, or apoptose. On the other hand, alterations that result in decreased p53 levels yield tumor-prone phenotypes. This review focuses on the physiological relevance of these important regulators of p53 and their therapeutic implications.
Collapse
Affiliation(s)
- Vinod Pant
- Department of Genetics, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA
| | - Guillermina Lozano
- Department of Genetics, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA
| |
Collapse
|
38
|
Kochhar A, Kopelovich L, Sue E, Guttenplan JB, Herbert BS, Dannenberg AJ, Subbaramaiah K. p53 modulates Hsp90 ATPase activity and regulates aryl hydrocarbon receptor signaling. Cancer Prev Res (Phila) 2014; 7:596-606. [PMID: 24736433 PMCID: PMC4074578 DOI: 10.1158/1940-6207.capr-14-0051] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aryl hydrocarbon receptor (AhR), a client protein of heat shock protein 90 (Hsp90), is a ligand-activated transcription factor that plays a role in polycyclic aromatic hydrocarbon (PAH)-induced carcinogenesis. Tobacco smoke activates AhR signaling leading to increased transcription of CYP1A1 and CYP1B1, which encode proteins that convert PAHs to mutagens. Recently, p53 was found to regulate Hsp90 ATPase activity via effects on activator of Hsp90 ATPase (Aha1). It is possible, therefore, that AhR-dependent expression of CYP1A1 and CYP1B1 might be affected by p53 status. The main objective of this study was to determine whether p53 modulated AhR-dependent gene expression and PAH metabolism. Here, we show that silencing p53 led to elevated Aha1 levels, increased Hsp90 ATPase activity, and enhanced CYP1A1 and CYP1B1 expression. Overexpression of wild-type p53 suppressed levels of CYP1A1 and CYP1B1. The significance of Aha1 in mediating these p53-dependent effects was determined. Silencing of Aha1 led to reduced Hsp90 ATPase activity and downregulation of CYP1A1 and CYP1B1. In contrast, overexpressing Aha1 was associated with increased Hsp90 ATPase activity and elevated levels of CYP1A1 and CYP1B1. Using p53 heterozygous mutant epithelial cells from patients with Li-Fraumeni syndrome, we show that monoallelic mutation of p53 was associated with elevated levels of CYP1A1 and CYP1B1 under both basal conditions and following treatment with benzo[a]pyrene. Treatment with CP-31398, a p53 rescue compound, suppressed benzo[a]pyrene-mediated induction of CYP1A1 and CYP1B1 and the formation of DNA adducts. Collectively, our results suggest that p53 affects AhR-dependent gene expression, PAH metabolism, and possibly carcinogenesis.
Collapse
Affiliation(s)
- Amit Kochhar
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IndianaAuthors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Levy Kopelovich
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Erika Sue
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Joseph B Guttenplan
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IndianaAuthors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Brittney-Shea Herbert
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Andrew J Dannenberg
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Kotha Subbaramaiah
- Authors' Affiliations: Department of Medicine, Weill Cornell Medical College; Department of Basic Sciences, College of Dentistry; and Department of Environmental Medicine, School of Medicine, New York University, New York; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana
| |
Collapse
|
39
|
P53-regulated long non-coding RNA TUG1 affects cell proliferation in human non-small cell lung cancer, partly through epigenetically regulating HOXB7 expression. Cell Death Dis 2014; 5:e1243. [PMID: 24853421 PMCID: PMC4047917 DOI: 10.1038/cddis.2014.201] [Citation(s) in RCA: 347] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 04/03/2014] [Accepted: 04/08/2014] [Indexed: 01/01/2023]
Abstract
Recently, a novel class of transcripts, long non-coding RNAs (lncRNAs), is being identified at a rapid pace. These RNAs have critical roles in diverse biological processes, including tumorigenesis. Here we report that taurine-upregulated gene 1 (TUG1), a 7.1-kb lncRNA, recruiting and binding to polycomb repressive complex 2 (PRC2), is generally downregulated in non-small cell lung carcinoma (NSCLC) tissues. In a cohort of 192 NSCLC patients, the lower expression of TUG1 was associated with a higher TNM stage and tumor size, as well as poorer overall survival (P<0.001). Univariate and multivariate analyses revealed that TUG1 expression serves as an independent predictor for overall survival (P<0.001). Further experiments revealed that TUG1 expression was induced by p53, and luciferase and chromatin immunoprecipitation (ChIP) assays confirmed that TUG1 was a direct transcriptional target of p53. TUG1 knockdown significantly promoted the proliferation in vitro and in vivo. Moreover, the lncRNA-mediated regulation of the expression of HOX genes in tumorigenesis and development has been recently receiving increased attention. Interestingly, inhibition of TUG1 could upregulate homeobox B7 (HOXB7) expression; ChIP assays demonstrated that the promoter of HOXB7 locus was bound by EZH2 (enhancer of zeste homolog 2), a key component of PRC2, and was H3K27 trimethylated. This TUG1-mediated growth regulation is in part due to specific modulation of HOXB7, thus participating in AKT and MAPK pathways. Together, these results suggest that p53-regulated TUG1 is a growth regulator, which acts in part through control of HOXB7. The p53/TUG1/PRC2/HOXB7 interaction might serve as targets for NSCLC diagnosis and therapy.
Collapse
|
40
|
Okayama S, Kopelovich L, Balmus G, Weiss RS, Herbert BS, Dannenberg AJ, Subbaramaiah K. p53 protein regulates Hsp90 ATPase activity and thereby Wnt signaling by modulating Aha1 expression. J Biol Chem 2014; 289:6513-6525. [PMID: 24451373 PMCID: PMC3945316 DOI: 10.1074/jbc.m113.532523] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/21/2014] [Indexed: 01/07/2023] Open
Abstract
The p53 tumor suppressor gene encodes a homotetrameric transcription factor which is activated in response to a variety of cellular stressors, including DNA damage and oncogene activation. p53 mutations occur in >50% of human cancers. Although p53 has been shown to regulate Wnt signaling, the underlying mechanisms are not well understood. Here we show that silencing p53 in colon cancer cells led to increased expression of Aha1, a co-chaperone of Hsp90. Heat shock factor-1 was important for mediating the changes in Aha1 levels. Increased Aha1 levels were associated with enhanced interactions with Hsp90, resulting in increased Hsp90 ATPase activity. Moreover, increased Hsp90 ATPase activity resulted in increased phosphorylation of Akt and glycogen synthase kinase-3β (GSK3β), leading to enhanced expression of Wnt target genes. Significantly, levels of Aha1, Hsp90 ATPase activity, Akt, and GSK3β phosphorylation and expression of Wnt target genes were increased in the colons of p53-null as compared with p53 wild type mice. Using p53 heterozygous mutant epithelial cells from Li-Fraumeni syndrome patients, we show that a monoallelic mutation of p53 was sufficient to activate the Aha1/Hsp90 ATPase axis leading to stimulation of Wnt signaling and increased expression of Wnt target genes. Pharmacologic intervention with CP-31398, a p53 rescue agent, inhibited recruitment of Aha1 to Hsp90 and suppressed Wnt-mediated gene expression in colon cancer cells. Taken together, this study provides new insights into the mechanism by which p53 regulates Wnt signaling and raises the intriguing possibility that p53 status may affect the efficacy of anticancer therapies targeting Hsp90 ATPase.
Collapse
Affiliation(s)
- Sachiyo Okayama
- Department of Medicine, Weill Cornell Medical College, New York, New York 10065
| | - Levy Kopelovich
- Department of Medicine, Weill Cornell Medical College, New York, New York 10065
| | - Gabriel Balmus
- Department of Biomedical Sciences, Cornell University, Ithaca, New York 14853
| | - Robert S Weiss
- Department of Biomedical Sciences, Cornell University, Ithaca, New York 14853
| | - Brittney-Shea Herbert
- Department of Medical and Molecular Genetics, Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Andrew J Dannenberg
- Department of Medicine, Weill Cornell Medical College, New York, New York 10065
| | - Kotha Subbaramaiah
- Department of Medicine, Weill Cornell Medical College, New York, New York 10065.
| |
Collapse
|
41
|
Soussi T. Locus-Specific Databases in Cancer: What Future in a Post-Genomic Era? The TP53 LSDB paradigm. Hum Mutat 2014; 35:643-53. [DOI: 10.1002/humu.22518] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 01/16/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Thierry Soussi
- Department of Oncology-Pathology Cancer Center Karolinska (CCK); Karolinska Institute; Stockholm Sweden
- Université Pierre et Marie Curie Paris 6; Paris France
| |
Collapse
|
42
|
Liu M, Watson LT, Zhang L. Quantitative prediction of the effect of genetic variation using hidden Markov models. BMC Bioinformatics 2014; 15:5. [PMID: 24405700 PMCID: PMC3893606 DOI: 10.1186/1471-2105-15-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 01/02/2014] [Indexed: 11/10/2022] Open
Abstract
Background With the development of sequencing technologies, more and more sequence variants are available for investigation. Different classes of variants in the human genome have been identified, including single nucleotide substitutions, insertion and deletion, and large structural variations such as duplications and deletions. Insertion and deletion (indel) variants comprise a major proportion of human genetic variation. However, little is known about their effects on humans. The absence of understanding is largely due to the lack of both biological data and computational resources. Results This paper presents a new indel functional prediction method HMMvar based on HMM profiles, which capture the conservation information in sequences. The results demonstrate that a scoring strategy based on HMM profiles can achieve good performance in identifying deleterious or neutral variants for different data sets, and can predict the protein functional effects of both single and multiple mutations. Conclusions This paper proposed a quantitative prediction method, HMMvar, to predict the effect of genetic variation using hidden Markov models. The HMM based pipeline program implementing the method HMMvar is freely available at
https://bioinformatics.cs.vt.edu/zhanglab/hmm.
Collapse
Affiliation(s)
| | | | - Liqing Zhang
- Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
| |
Collapse
|
43
|
Imai H, Kato S, Sakamoto Y, Kakudo Y, Shimodaira H, Ishioka C. High throughput RNAi screening identifies ID1 as a synthetic sick/lethal gene interacting with the common TP53 mutation R175H. Oncol Rep 2013; 31:1043-50. [PMID: 24378760 PMCID: PMC3926671 DOI: 10.3892/or.2013.2953] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 07/22/2013] [Indexed: 11/12/2022] Open
Abstract
The TP53 mutation (R175H) is one of the most common mutations in human cancer. It is a highly attractive strategy for cancer therapy to find the genes that lead the R175H-expressing cancer cells. The aim of this study was to identify the synthetic sick/lethal gene interacting with R175H. Using lentiviral bar-coded comprehensive shRNA library and a tetracycline-inducible R175H expressed in the SF126 human glioblastoma cell line (SF126-tet-R175H), we conducted high-throughput screening to identify the candidate genes that induce synthetic sickness/lethality in R175H-expressing cells. We identified 906 candidate gene suppressions that may lead to accelerated cell growth inhibition in the presence of R175H. Inhibitor of differentiation 1 (ID1) was one of the candidate genes, and its suppression by siRNA resulted in the acceleration of growth inhibition in cell lines both transiently and endogenously expressing R175H but not in TP53-null cell lines or other common p53 mutants (such as R273H). Flow cytometry analysis showed that ID1 suppression resulted in G1 arrest, and the arrest was accelerated by the expression of R175H. ID1 is a synthetic sick/lethal gene that interacts with R175H and is considered to be a novel molecular target for cancer therapy in R175H-expressing cells.
Collapse
Affiliation(s)
- Hiroo Imai
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Shunsuke Kato
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Yasuhiro Sakamoto
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Yuichi Kakudo
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Hideki Shimodaira
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Chikashi Ishioka
- Department of Clinical Oncology, IDAC, Tohoku University, Sendai, Miyagi 980-8575, Japan
| |
Collapse
|
44
|
Alvarez-Gonzalez R, Mendoza-Alvarez H, Frey M, Zentgraf H. Up-regulation of two distinct p53-DNA binding functions by covalent poly(ADP-ribosyl)ation: transactivating and single strand break sensing. Cancer Invest 2013; 31:563-70. [PMID: 24164297 DOI: 10.3109/07357907.2013.845670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We used a [(32)P] p53 sequence-specific oligodeoxynucleotide and Electrophoretic-Mobility-Shift-Assays to monitor p53 DNA sequence-specific binding with p53-R267W, a nonbinding point mutant; and p53-Δ30, a deletion-mutant which lacks the carboxy-terminus that recognizes DNA-strand-breaks. Recombinant p53 and poly(ADP-ribose)polymerase-1 (PARP-1) were incubated with labeled βNAD(+) with/without DNA. The poly(ADP-ribosyl)ation of each protein increased with incubation-time and βNAD(+) and p53 concentration(s). Since p53-Δ30 was efficiently labeled, poly(ADP-ribosyl)ation target site(s) of wt-p53 must reside outside its carboxy-terminal-domain. The poly(ADP-ribosyl)ation of p53-Δ30 did not diminish its DNA binding; Instead, it enhanced DNA-sequence-specific-binding. Therefore, we conclude that DNA-sequence-specific-binding and DNA-nick-sensing of mutant-p53 are differentially regulated by poly(ADP-ribosyl)ation.
Collapse
|
45
|
Erickson BK, Conner MG, Landen CN. The role of the fallopian tube in the origin of ovarian cancer. Am J Obstet Gynecol 2013; 209:409-14. [PMID: 23583217 DOI: 10.1016/j.ajog.2013.04.019] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/02/2013] [Accepted: 04/08/2013] [Indexed: 01/05/2023]
Abstract
Advanced cases of epithelial ovarian, primary peritoneal, and primary tubal malignancies have a relatively poor prognosis and collectively remain the most deadly of all gynecologic malignancies. Although traditionally thought of as one disease process, ongoing research suggests that there is not 1 single site or cell type from which these cancers arise. A majority of the serous tumors appear to originate from dysplastic lesions in the distal fallopian tube. Therefore, what we have traditionally considered "ovarian" cancer may in fact be tubal in origin. In this article, we will review epithelial ovarian cancer classification and genetics, theories regarding cells of origin with a focus on tubal intraepithelial carcinoma, and implications for prevention and screening.
Collapse
Affiliation(s)
- Britt K Erickson
- Division of Gynecologic Oncology, University of Alabama at Birmingham, Birmingham, AL
| | | | | |
Collapse
|
46
|
Okal A, Mossalam M, Matissek KJ, Dixon AS, Moos PJ, Lim CS. A chimeric p53 evades mutant p53 transdominant inhibition in cancer cells. Mol Pharm 2013; 10:3922-33. [PMID: 23964676 DOI: 10.1021/mp400379c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Because of the dominant negative effect of mutant p53, there has been limited success with wild-type (wt) p53 cancer gene therapy. Therefore, an alternative oligomerization domain for p53 was investigated to enhance the utility of p53 for gene therapy. The tetramerization domain of p53 was substituted with the coiled-coil (CC) domain from Bcr (breakpoint cluster region). Our p53 variant (p53-CC) maintains proper nuclear localization in breast cancer cells detected via fluorescence microscopy and shows a similar expression profile of p53 target genes as wt-p53. Additionally, similar tumor suppressor activities of p53-CC and wt-p53 were detected by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), annexin-V, 7-aminoactinomycin D (7-AAD), and colony-forming assays. Furthermore, p53-CC was found to cause apoptosis in four different cancer cell lines, regardless of endogenous p53 status. Interestingly, the transcriptional activity of p53-CC was higher than wt-p53 in 3 different reporter gene assays. We hypothesized that the higher transcriptional activity of p53-CC over wt-p53 was due to the sequestration of wt-p53 by endogenous mutant p53 found in cancer cells. Co-immunoprecipitation revealed that wt-p53 does indeed interact with endogenous mutant p53 via its tetramerization domain, while p53-CC escapes this interaction. Therefore, we investigated the impact of the presence of a transdominant mutant p53 on tumor suppressor activities of wt-p53 and p53-CC. Overexpression of a potent mutant p53 along with wt-p53 or p53-CC revealed that, unlike wt-p53, p53-CC retains the same level of tumor suppressor activity. Finally, viral transduction of wt-p53 and p53-CC into a breast cancer cell line that harbors a tumor derived transdominant mutant p53 validated that p53-CC indeed evades sequestration and consequent transdominant inhibition by endogenous mutant p53.
Collapse
Affiliation(s)
- Abood Okal
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah , Salt Lake City, Utah 84112, United States
| | | | | | | | | | | |
Collapse
|
47
|
Warren RS, Atreya CE, Niedzwiecki D, Weinberg VK, Donner DB, Mayer RJ, Goldberg RM, Compton CC, Zuraek MB, Ye C, Saltz LB, Bertagnolli MM. Association of TP53 mutational status and gender with survival after adjuvant treatment for stage III colon cancer: results of CALGB 89803. Clin Cancer Res 2013; 19:5777-87. [PMID: 23983256 DOI: 10.1158/1078-0432.ccr-13-0351] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE The TP53 tumor suppressor is frequently mutated in colon cancer, but the influence of such mutations on survival remains controversial. We investigated whether mutations in the DNA-binding domain of TP53 are associated with survival in stage III colon cancer. EXPERIMENTAL DESIGN The impact of TP53 genotype was prospectively evaluated in Cancer and Leukemia Group B 89803, a trial that randomized stage III colon cancer patients to receive adjuvant 5-fluorouracil/leucovorin (5FU/LV) or 5FU/LV with irinotecan (IFL). RESULTS TP53 mutations were identified in 274 of 607 cases. The presence of any TP53 mutation did not predict disease-free survival (DFS) or overall survival with either adjuvant regimen when men and women were considered together or as separate groups. However, outcome differences among women became apparent when tumor TP53 genotype was stratified as wild-type versus zinc- or non-zinc-binding mutations in the TP53 DNA-binding domain. DFS at 5 years was 0.59, 0.52, and 0.78 for women with TP53 wild-type tumors, and tumors with zinc- or non-zinc-binding mutations, respectively. Survival at 5 years for these same women was 0.72, 0.59, and 0.90, respectively. No differences in survival by TP53 genotype were observed in men. CONCLUSIONS The presence of any TP53 mutation within the DNA-binding domain did not predict survival in stage III colon cancer. However, TP53 genotype was predictive of survival in women following adjuvant therapy. Future colon cancer therapeutic trials, with inclusion of correlative molecular markers, should be designed to permit evaluation of survival and/or response to treatment in women separately from men.
Collapse
Affiliation(s)
- Robert S Warren
- Authors' Affiliations: Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California; Department of Biostatistics and Bioinformatics, Alliance Statistics and Data Center, Duke University Medical Center, Durham, North Carolina; Dana-Farber Cancer Institute; Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, Massachusetts; The Ohio State University, Columbus, Ohio; National Cancer Institute, Bethesda, Maryland; and Memorial Sloan-Kettering Cancer Center, New York, New York
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Huang W, Liu K. [P53 family proteins provide new insights into lung carcinogenesis and clinical treatment]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2013; 16:422-6. [PMID: 23945246 PMCID: PMC6000662 DOI: 10.3779/j.issn.1009-3419.2013.08.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
P53作为转录因子,其转录激活功能维持了基因组的稳定性,对防止肿瘤的形成起着重要作用,是目前研究得最为广泛、深入的抑癌基因,被称为“基因卫士”。P53家族的成员p63、p73与p53在DNA结合结构域上有高度的同源性,某些p53家族亚型可以与p53-反应基因相结合起着转录激活的作用,另外一些则起着负性调节作用。肺癌是世界上患病率最高的恶性肿瘤之一,p53家族成员在肺癌中的异常表达与肺癌的发生有密切联系,并导致不良的预后及对放疗、化疗的抵抗。对p53家族成员在肺癌致病机制的深入研究可有助于为临床提供合理的化疗方案及靶向治疗策略。本文着重回顾总结p53家族成员在肺癌发生、化疗敏感性以及肺癌靶向治疗中的独特的作用。
Collapse
Affiliation(s)
- Wenyan Huang
- Department of Pathology, Medical College, Ji'nan University, Guangzhou 510632, China
| | | |
Collapse
|
49
|
Ng D, Johnston JJ, Teer JK, Singh LN, Peller LC, Wynter JS, Lewis KL, Cooper DN, Stenson PD, Mullikin JC, Biesecker LG. Interpreting secondary cardiac disease variants in an exome cohort. CIRCULATION. CARDIOVASCULAR GENETICS 2013; 6:337-46. [PMID: 23861362 PMCID: PMC3887521 DOI: 10.1161/circgenetics.113.000039] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Massively parallel sequencing to identify rare variants is widely practiced in medical research and in the clinic. Genome and exome sequencing can identify the genetic cause of a disease (primary results), but it can also identify pathogenic variants underlying diseases that are not being sought (secondary or incidental results). A major controversy has developed surrounding the return of secondary results to research participants. We have piloted a method to analyze exomes to identify participants at risk for cardiac arrhythmias, cardiomyopathies, or sudden death. METHODS AND RESULTS Exome sequencing was performed on 870 participants not selected for arrhythmia, cardiomyopathy, or a family history of sudden death. Exome data from 22 cardiac arrhythmia- and 41 cardiomyopathy-associated genes were analyzed using an algorithm that filtered results on genotype quality, frequency, and database information. We identified 1367 variants in the cardiomyopathy genes and 360 variants in the arrhythmia genes. Six participants had pathogenic variants associated with dilated cardiomyopathy (n=1), hypertrophic cardiomyopathy (n=2), left ventricular noncompaction (n=1), or long-QT syndrome (n=2). Two of these participants had evidence of cardiomyopathy and 1 had left ventricular noncompaction on echocardiogram. Three participants with likely pathogenic variants had prolonged QTc. Family history included unexplained sudden death among relatives. CONCLUSIONS Approximately 0.5% of participants in this study had pathogenic variants in known cardiomyopathy or arrhythmia genes. This high frequency may be due to self-selection, false positives, or underestimation of the prevalence of these conditions. We conclude that clinically important cardiomyopathy and dysrhythmia secondary variants can be identified in unselected exomes.
Collapse
Affiliation(s)
- David Ng
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Jennifer J. Johnston
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Jamie K. Teer
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
- NIH Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Larry N. Singh
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Lindsey C. Peller
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Jamila S. Wynter
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Katie L. Lewis
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - David N. Cooper
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Peter D. Stenson
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - James C. Mullikin
- NIH Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Leslie G. Biesecker
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
- NIH Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| |
Collapse
|
50
|
Expanding the prion concept to cancer biology: dominant-negative effect of aggregates of mutant p53 tumour suppressor. Biosci Rep 2013; 33:BSR20130065. [PMID: 24003888 PMCID: PMC3728989 DOI: 10.1042/bsr20130065] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
p53 is a key protein that participates in cell-cycle control, and its malfunction can lead to cancer. This tumour suppressor protein has three main domains; the N-terminal transactivation domain, the CTD (C-terminal domain) and the core domain (p53C) that constitutes the sequence-specific DBD (DNA-binding region). Most p53 mutations related to cancer development are found in the DBD. Aggregation of p53 into amyloid oligomers and fibrils has been shown. Moreover, amyloid aggregates of both the mutant and WT (wild-type) forms of p53 were detected in tumour tissues. We propose that if p53 aggregation occurred, it would be a crucial aspect of cancer development, as p53 would lose its WT functions in an aggregated state. Mutant p53 can also exert a dominant-negative regulatory effect on WT p53. Herein, we discuss the dominant-negative effect in light of p53 aggregation and the fact that amyloid-like mutant p53 can convert WT p53 into more aggregated species, leading into gain of function in addition to the loss of tumour suppressor function. In summary, the results obtained in the last decade indicate that cancer may have characteristics in common with amyloidogenic and prion diseases.
Collapse
|