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Wang D, Duan X, Zhang Y, Meng Z, Wang J. Traditional Chinese medicine for oral squamous cell carcinoma: A Bayesian network meta-analysis protocol. Medicine (Baltimore) 2020; 99:e22955. [PMID: 33120858 PMCID: PMC7581022 DOI: 10.1097/md.0000000000022955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 09/29/2020] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Traditional Chinese medicine is frequently used for malignant tumors in China, but in clinical practice, most practitioners choose appropriate Chinese medicines based on personal experience. In our study, Bayesian network meta-analysis will be used to identify differences in efficacy and safety between diverse traditional Chinese drugs for oral squamous cell carcinoma (OSCC). METHODS Relevant randomized controlled trials and prospective controlled clinical trials were searched from Medline, PubMed, Cochrane Library, Google Scholar, Excerpt Medica Database, Web of Science, China National Knowledge Infrastructure, China Scientific Journal Database, Chinese Biomedical Literature Database, and Wanfang Database from their establishment to September 2020. Study selection and data extraction will be performed independently by 2 researchers. Aggregate Data Drug Information System and R software were used for data synthesis. The evidentiary grade of the results will be also evaluated. RESULTS The results of this study will be published in a peer-reviewed journal, and provide reliable evidence for different traditional Chinese drugs on OSCC. CONCLUSIONS The findings will provide reference for evaluating the efficacy and safety of different traditional Chinese medicine for OSCC, and provide a helpful evidence for clinicians to formulate the best adjuvant treatment strategy for OSCC patients. TRIAL REGISTRATION NUMBER INPLASY202090082.
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Affiliation(s)
- Dong Wang
- Department of Stomatology, Liaocheng People's Hospital
- Medical College of Liaocheng University, Liaocheng, Shandong
| | - XiaoJie Duan
- Department of Stomatology, Liaocheng People's Hospital
- Medical College of Liaocheng University, Liaocheng, Shandong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory for Oral Biomedical Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei
| | - Yuhui Zhang
- Department of Stomatology, Liaocheng People's Hospital
- Medical College of Liaocheng University, Liaocheng, Shandong
| | - Zhen Meng
- Medical College of Liaocheng University, Liaocheng, Shandong
- Key Lab of Precision Biomedicine & Department of Stomatology, Liaocheng People's Hospital
- College of Stomatology, Shandong First Medical University, Liaocheng, Shandong Province, P.R. China
| | - Jing Wang
- Department of Stomatology, Liaocheng People's Hospital
- Medical College of Liaocheng University, Liaocheng, Shandong
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Cavalcanti ÉB, Félix MB, Scotti L, Scotti MT. Virtual Screening of Natural Products to Select Compounds with Potential Anticancer Activity. Anticancer Agents Med Chem 2019; 19:154-171. [DOI: 10.2174/1871520618666181119110934] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/29/2017] [Accepted: 03/21/2018] [Indexed: 12/28/2022]
Abstract
Cancer is the main cause of death, so the search for active agents to be used in the therapy of this
disease, is necessary. According to studies conducted, substances derived from natural products have shown to
be promising in this endeavor. To these researches, one can associate with the aid of computational chemistry,
which is increasingly gaining popularity, due to the possibility of developing alternative strategies that could
help in choosing an appropriate set of compounds, avoiding unnecessary expenses with resources that would
generate unwanted substance. Thus, the objective of this study was to carry out an approach to several studies
that apply different methods of virtual screening to select natural products with potential anticancer activity.
This review presents reports of studies conducted with some natural products, such as coumarin, quinone, tannins,
alkaloids, flavonoids and terpenes.
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Affiliation(s)
- Élida B.V.S. Cavalcanti
- Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - Mayara B. Félix
- Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - Luciana Scotti
- Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - Marcus T. Scotti
- Program of Natural and Synthetic Bioactive Products (PgPNSB), Health Sciences Center, Federal University of Paraíba, 58051-900, João Pessoa-PB, Brazil
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Moosavi Nejad S, Takahashi H, Hosseini H, Watanabe A, Endo H, Narihira K, Kikuta T, Tachibana K. Acute effects of sono-activated photocatalytic titanium dioxide nanoparticles on oral squamous cell carcinoma. ULTRASONICS SONOCHEMISTRY 2016; 32:95-101. [PMID: 27150750 DOI: 10.1016/j.ultsonch.2016.02.026] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/28/2016] [Accepted: 02/29/2016] [Indexed: 05/27/2023]
Abstract
Sonodynamic therapy (SDT) is a new treatment modality using ultrasound to activate certain chemical sensitizers for cancer therapy. In this study, effects of high intensity focused ultrasound (HIFU) combined with photocatalytic titanium dioxide (TiO2) nanoparticles on human oral squamous cell line HSC-2 were investigated. Viability of HSC-2 cells after 0, 0.1, 1, or 3s of HIFU irradiation with 20, 32, 55 and 73Wcm(-2) intensities in the presence or absence of TiO2 was measured immediately after the exposures in vitro. Immediate effects of HIFU (3s, 73Wcm(-2)) combined with TiO2 on solid tumors were also examined by histological study. Cytotoxic effect of HIFU+TiO2in vitro was significantly higher than that of TiO2 or HIFU alone with the tendency to increase for higher HIFU intensity, duration, and TiO2 concentration in the suspension. In vivo results showed significant necrosis and tissue damage in HIFU and HIFU+TiO2 treated samples. However, penetration of TiO2 nanoparticles into the cell cytoplasm was only observed in HIFU+TiO2 treated tissues. In this study, our findings provide a rational basis for the development of an effective HIFU based sonodynamic activation method. This approach offers an attractive non-invasive therapy technique for oral cancer in future.
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Affiliation(s)
- S Moosavi Nejad
- Department of Anatomy, School of Medicine, Fukuoka University, Fukuoka, Japan.
| | - Hiromasa Takahashi
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Hamid Hosseini
- Bioelectrics Department, Institute of Pulsed Power Science, Kumamoto University, Kumamoto, Japan
| | - Akiko Watanabe
- Department of Anatomy, School of Medicine, Fukuoka University, Fukuoka, Japan
| | - Hitomi Endo
- Department of Anatomy, School of Medicine, Fukuoka University, Fukuoka, Japan
| | - Kyoichi Narihira
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Toshihiro Kikuta
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Katsuro Tachibana
- Department of Anatomy, School of Medicine, Fukuoka University, Fukuoka, Japan
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4
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Zhao X, Liu D, Wang L, Wu R, Zeng X, Dan H, Ji N, Jiang L, Zhou Y, Chen Q. RNAi-mediated downregulation of oral cancer overexpressed 1 (ORAOV1) inhibits vascular endothelial cell proliferation, migration, invasion, and tube formation. J Oral Pathol Med 2015; 45:256-61. [PMID: 26449957 DOI: 10.1111/jop.12371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2015] [Indexed: 12/01/2022]
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) is one of the top ten tumors threatening human health. Oral cancer overexpressed 1 (ORAOV1) identified within chromosomal region 11q13, one of the most frequently amplified regions in OSCC, has been suggested as a novel candidate oncogene in OSCC, regulating cell cycle, apoptosis, and angiogenesis. In this study, we investigated the role of ORAOV1 in OSCC-induced angiogenesis in vitro. METHODS EA.hy926 human endothelial cells were co-cultured with OSCC cells (HSC-3 and SCC-25) transfected with ORAOV1-specific shRNA to downregulate ORAOV1 expression, and analyzed for proliferation, migration, invasion, and tube formation by specific assays. RESULTS EA.hy926 endothelial cells co-cultured with ORAOV1-deficient OSCC cells exhibited significantly lower proliferation, migration, and invasion, as well as the activity in tube formation compared to that in the control cells. CONCLUSIONS Our results show, for the first time, that ORAOV1 expressed by OSCC cells promotes tube formation by endothelial cells, indicating its involvement in OSCC angiogenesis. Considering the importance of neovascularization in tumor development and metastasis, these findings suggest that targeting ORAOV1 may be a potential therapeutic strategy against OSCC.
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Affiliation(s)
- Xin Zhao
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Dongjuan Liu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Lili Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ruiqing Wu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Hongxia Dan
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ning Ji
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Lu Jiang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Yu Zhou
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
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5
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Muniz JM, Bibiano Borges CR, Beghini M, de Araújo MS, Miranda Alves P, de Lima LMB, Pereira SADL, Nogueira RD, Napimoga MH, Rodrigues V, Rodrigues DBR. Galectin-9 as an important marker in the differential diagnosis between oral squamous cell carcinoma, oral leukoplakia and oral lichen planus. Immunobiology 2015; 220:1006-11. [DOI: 10.1016/j.imbio.2015.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
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Gorini G, Adron Harris R, Dayne Mayfield R. Proteomic approaches and identification of novel therapeutic targets for alcoholism. Neuropsychopharmacology 2014; 39:104-30. [PMID: 23900301 PMCID: PMC3857647 DOI: 10.1038/npp.2013.182] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 07/02/2013] [Accepted: 07/04/2013] [Indexed: 01/01/2023]
Abstract
Recent studies have shown that gene regulation is far more complex than previously believed and does not completely explain changes at the protein level. Therefore, the direct study of the proteome, considerably different in both complexity and dynamicity to the genome/transcriptome, has provided unique insights to an increasing number of researchers. During the past decade, extraordinary advances in proteomic techniques have changed the way we can analyze the composition, regulation, and function of protein complexes and pathways underlying altered neurobiological conditions. When combined with complementary approaches, these advances provide the contextual information for decoding large data sets into meaningful biologically adaptive processes. Neuroproteomics offers potential breakthroughs in the field of alcohol research by leading to a deeper understanding of how alcohol globally affects protein structure, function, interactions, and networks. The wealth of information gained from these advances can help pinpoint relevant biomarkers for early diagnosis and improved prognosis of alcoholism and identify future pharmacological targets for the treatment of this addiction.
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Affiliation(s)
- Giorgio Gorini
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, USA
| | - R Adron Harris
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, USA
| | - R Dayne Mayfield
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, USA
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7
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Wang Y, Zhou X, Song Y, Ji X, Zhang A, Zhang G, Gao Z. The mismatch repair gene hPMS1 (human postmeiotic segregation1) is down regulated in oral squamous cell carcinoma. Gene 2013; 524:28-34. [DOI: 10.1016/j.gene.2013.04.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 03/29/2013] [Accepted: 04/01/2013] [Indexed: 11/27/2022]
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8
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Zhang L, Wang K, Zhao F, Hu W, Chen J, Lanza GM, Shen B, Zhang B. Near infrared imaging of EGFR of oral squamous cell carcinoma in mice administered arsenic trioxide. PLoS One 2012; 7:e46255. [PMID: 23029451 PMCID: PMC3460885 DOI: 10.1371/journal.pone.0046255] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Accepted: 08/31/2012] [Indexed: 02/03/2023] Open
Abstract
Background The effectiveness of near-infrared imaging (NIR) interrogation of epidermal growth factor receptor (EGFR) expression as a sensitive biomarker of oral squamous cell carcinoma (OSCC) response to arsenic trioxide therapy was studied in mice. Material and Methods A431 OSCC in vitro were exposed to 0 µM, 0.5 µM, 2.5 µM, or 5 µM of As2O3 for 0 h, 24 h, 48 h and 72 h. Confocal microscopy and flow cytometry confirmed EGFR expression and demonstrated a sensitivity dose-related signal decline with As2O3 treatment. Next, mice with pharynx-implanted A431 cells received As2O3 i.p. every 48 h at 0.0, 0.5, 2.5, or 5 mg/kg/day (n = 6/group) from day 0 to 10. An intravenous NIR probe, EGF-Cy5.5, was injected at baseline and on days 4, 8, and 12 for dynamic NIR imaging. Tumor volume and body weights were measured three times weekly. Results In vitro, A431 EGFR expression was well appreciated in the controls and decreased (p<0.05) with increasing As2O3 dose and treatment duration. In vivo EGFR NIR tumor signal intensity decreased (p<0.05) in As2O3 treated groups versus controls from days 4 to 12, consistent with increasing dosage. Tumor volume diminished in a dose-related manner while body weight was unaffected. Immunohistochemical staining of excised tumors confirmed that EGFR expression was reduced by As2O3 treatment in a dose responsive pattern. Conclusion This study demonstrates for the first time that OSCC can be interrogated in vivo by NIR molecular imaging of the EGFR and that this biomarker is effective for the longitudinal assessment of OSCC response to As2O3 treatment.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Arsenic Trioxide
- Arsenicals/pharmacology
- Arsenicals/therapeutic use
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Body Weight/drug effects
- Carbocyanines
- Carcinoma, Squamous Cell/diagnosis
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/metabolism
- Dose-Response Relationship, Drug
- Epidermal Growth Factor/administration & dosage
- Epidermal Growth Factor/chemistry
- ErbB Receptors/analysis
- ErbB Receptors/genetics
- ErbB Receptors/metabolism
- Gene Expression/drug effects
- Injections, Intraperitoneal
- Injections, Intravenous
- Magnetic Resonance Imaging
- Mice
- Mice, Nude
- Mouth Neoplasms/diagnosis
- Mouth Neoplasms/drug therapy
- Mouth Neoplasms/genetics
- Mouth Neoplasms/metabolism
- Neoplasms, Experimental
- Oxides/pharmacology
- Oxides/therapeutic use
- Recombinant Fusion Proteins/administration & dosage
- Recombinant Fusion Proteins/chemistry
- Spectroscopy, Near-Infrared
- Tumor Burden/drug effects
- Tumor Cells, Cultured
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Affiliation(s)
- Lingbo Zhang
- Stomatology Department, Institute of Hard Tissue Development and Regeneration, 2nd Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
| | - Kezheng Wang
- Radiology Department and Molecular Imaging Center, 4th Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
| | - Falin Zhao
- School of Health Management, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Weiping Hu
- Stomatology Department, Institute of Hard Tissue Development and Regeneration, 2nd Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
| | - Junjie Chen
- Division of Cardiology and C-TRAIN, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Gregory M. Lanza
- Division of Cardiology and C-TRAIN, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Baozhong Shen
- Radiology Department and Molecular Imaging Center, 4th Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
- * E-mail: (BS); (BZ)
| | - Bin Zhang
- Stomatology Department, Institute of Hard Tissue Development and Regeneration, 2nd Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang, China
- * E-mail: (BS); (BZ)
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Lin YL, Wang WY, Lin JC, Wong YK, Chien YC. The status of EGFR CA SSR1 is a potential prognostic factor for patients with oral squamous cell carcinoma. Oral Oncol 2011; 47:482-6. [PMID: 21530363 DOI: 10.1016/j.oraloncology.2010.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 08/13/2010] [Accepted: 08/13/2010] [Indexed: 02/02/2023]
Abstract
The EGFR is an oncogene known to be involved in the development and progression of many cancers. It has been reported that the expression of EGFR and EGFR CA simple sequence repeat 1 (CA SSR1) repeat numbers in tumors can be useful prognostic factors in several cancer types. The objective of the present study was to analyze whether the EGFR polymorphism can be a useful prognostic factor in OSCC in the Taiwanese population. OSCC tissues were collected from 47 patients by surgical excision. The genotyping of EGFR were performed with the ABI Prism 3100 Genetic Analyzer. OSCC patients had a tendency toward an allelic imbalance of CA SSR1. The results also suggested that OSCC patients who were homozygous for CA SSR1 had a poorer prognosis than those who were heterozygous (P<0.001). Besides, patients with an allelic imbalance of CA SSR1 had significantly lower overall and disease free survival rates than those without, using the Kaplan-Meier method (P<0.001). This suggests that the status of CA SSR1 has the potential to be a useful prognosis factor in OSCC.
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Affiliation(s)
- Yan-Liang Lin
- Department of Biology, National Changhua University of Education, Changhua City, Taiwan
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Molecular targets of alcohol action: Translational research for pharmacotherapy development and screening. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 98:293-347. [PMID: 21199775 DOI: 10.1016/b978-0-12-385506-0.00007-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Alcohol abuse and dependence are multifaceted disorders with neurobiological, psychological, and environmental components. Research on other complex neuropsychiatric diseases suggests that genetically influenced intermediate characteristics affect the risk for heavy alcohol consumption and its consequences. Diverse therapeutic interventions can be developed through identification of reliable biomarkers for this disorder and new pharmacological targets for its treatment. Advances in the fields of genomics and proteomics offer a number of possible targets for the development of new therapeutic approaches. This brain-focused review highlights studies identifying neurobiological systems associated with these targets and possible pharmacotherapies, summarizing evidence from clinically relevant animal and human studies, as well as sketching improvements and challenges facing the fields of proteomics and genomics. Concluding thoughts on using results from these profiling technologies for medication development are also presented.
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Konkimalla VB, Efferth T. Inhibition of epidermal growth factor receptor-overexpressing cancer cells by camptothecin, 20-(N,N-diethyl) glycinate. Biochem Pharmacol 2010; 80:39-49. [PMID: 20206609 DOI: 10.1016/j.bcp.2010.02.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 02/10/2010] [Accepted: 02/25/2010] [Indexed: 10/19/2022]
Abstract
The epidermal growth factor receptor (EGFR) represents a prognostic marker for short survival of patients and therapy resistance of tumors. Despite clinical usefulness of EGFR tyrosine kinase inhibitors, resistance can develop. Therefore, there is an urgent need for novel EGFR inhibitors. Camptothecins have been characterized as inhibitors of DNA topoisomerase I (TOP1), although a correlation between TOP1 expression and activity is not well established in clinical biopsies. Hence, other targets may also be relevant. By molecular docking, we found that camptothecin 20-N,N-glycinate (CPTg) and camptothecin (CPT) bind to the same pharmacophore at EGFR as erlotinib, albeit to partly different amino acids. To validate the in silico results, CPT and CPTg were evaluated for their cytotoxic activity and downstream signaling mechanisms in U87MG glioblastoma cell lines transduced with different expression vectors for EGFR. All transduced cell lines were more susceptible to CPTg or CPT than the non-transduced cells, indicating a preferential activity towards EGFR-expressing tumor cells. Microarray-based mRNA hybridizations were performed in treated a non-treated cell lines. Subsets of genes were commonly regulated between the cell lines. By pathway analyses, we ranked canonical pathways according to differential gene expression after drug treatment. The pathways for G2/M DNA damage checkpoint regulation, aryl hydrocarbon receptor signaling, and xenobiotic metabolism and endoplasmatic reticulum stress were top ranked. In conclusion, binding of CPTg and CPT to the erlotinib pharmacophore and preferential cytotoxicity towards EGFR-overexpressing cells indicate susceptibility towards erlotinib-resistant tumors. Multiple mechanisms may account for cytotoxicity of these camptothecins.
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Konkimalla VB, Efferth T. Inhibition of epidermal growth factor receptor over-expressing cancer cells by the aphorphine-type isoquinoline alkaloid, dicentrine. Biochem Pharmacol 2009; 79:1092-9. [PMID: 20005213 DOI: 10.1016/j.bcp.2009.11.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 11/27/2009] [Accepted: 11/30/2009] [Indexed: 11/29/2022]
Abstract
The extraordinary relevance of EGFR in tumour biology makes it an exquisite molecular target for tumour therapy. Despite considerable success with these EGFR tyrosine kinase inhibitors in cancer therapy, resistance against these chemical compounds develops owing to the selection of point-mutated variants of EGFR. Therefore, there is an urgent need for the identification of novel EGFR tyrosine kinase inhibitors for treating tumours with such EGFR mutants. We found a preferential cytotoxicity of dicentrine towards U87MG.DeltaEGFR-transduced with a constitutively deletion-activated EGFR expression vector as compared to non-transduced wild-type U87MG cells. As determined by microarray-based mRNA expression profiling, this preferential cytotoxicity was accompanied with an activation of BRCA1-mediated DNA damage response, p53 signalling, G1/S and G2/M cell cycle regulation, and aryl hydrocarbon receptor pathways. The activation of these signalling routes might be explained by the fact that dicentrine intercalates DNA and induces DNA strand break by inhibition of DNA topoisomerases. The cell cycle might be arrested by dicentrine-induced DNA lesions.
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Efferth T, Li PCH, Konkimalla VSB, Kaina B. From traditional Chinese medicine to rational cancer therapy. Trends Mol Med 2007; 13:353-61. [PMID: 17644431 DOI: 10.1016/j.molmed.2007.07.001] [Citation(s) in RCA: 357] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2006] [Revised: 06/04/2007] [Accepted: 07/04/2007] [Indexed: 01/16/2023]
Abstract
Many natural products and derivatives thereof belong to the standard repertoire of cancer chemotherapy. Examples are Vinca alkaloids, taxanes and camptothecins. In recent years, the potential of natural products from plants, notably from medicinal plants used in traditional Chinese medicine (TCM), has been recognized by the scientific community in the Western world. To provide an example of the most recent developments in this field, we have selected several compounds, namely artesunate, homoharringtonine, arsenic trioxide and cantharidin, that are found in natural TCM products and that have the potential for use in cancer therapy. Controlled clinical studies have shown that homoharringtonine and arsenic trioxide can exert profound activity against leukaemia. Increased knowledge of the molecular mechanisms of TCM-derived drugs and recent developments in their applications demonstrate that the combination of TCM with modern cutting-edge technologies provides an attractive strategy for the development of novel and improved cancer therapeutics.
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Affiliation(s)
- Thomas Efferth
- German Cancer Research Center, Pharmaceutical Biology (C015), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
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