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Gohil D, Sarker AH, Roy R. Base Excision Repair: Mechanisms and Impact in Biology, Disease, and Medicine. Int J Mol Sci 2023; 24:14186. [PMID: 37762489 PMCID: PMC10531636 DOI: 10.3390/ijms241814186] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Base excision repair (BER) corrects forms of oxidative, deamination, alkylation, and abasic single-base damage that appear to have minimal effects on the helix. Since its discovery in 1974, the field has grown in several facets: mechanisms, biology and physiology, understanding deficiencies and human disease, and using BER genes as potential inhibitory targets to develop therapeutics. Within its segregation of short nucleotide (SN-) and long patch (LP-), there are currently six known global mechanisms, with emerging work in transcription- and replication-associated BER. Knockouts (KOs) of BER genes in mouse models showed that single glycosylase knockout had minimal phenotypic impact, but the effects were clearly seen in double knockouts. However, KOs of downstream enzymes showed critical impact on the health and survival of mice. BER gene deficiency contributes to cancer, inflammation, aging, and neurodegenerative disorders. Medicinal targets are being developed for single or combinatorial therapies, but only PARP and APE1 have yet to reach the clinical stage.
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Affiliation(s)
- Dhara Gohil
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA;
| | - Altaf H. Sarker
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;
| | - Rabindra Roy
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA;
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Gorini F, Ambrosio S, Lania L, Majello B, Amente S. The Intertwined Role of 8-oxodG and G4 in Transcription Regulation. Int J Mol Sci 2023; 24:ijms24032031. [PMID: 36768357 PMCID: PMC9916577 DOI: 10.3390/ijms24032031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 01/22/2023] Open
Abstract
The guanine base in nucleic acids is, among the other bases, the most susceptible to being converted into 8-Oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) when exposed to reactive oxygen species. In double-helix DNA, 8-oxodG can pair with adenine; hence, it may cause a G > T (C > A) mutation; it is frequently referred to as a form of DNA damage and promptly corrected by DNA repair mechanisms. Moreover, 8-oxodG has recently been redefined as an epigenetic factor that impacts transcriptional regulatory elements and other epigenetic modifications. It has been proposed that 8-oxodG exerts epigenetic control through interplay with the G-quadruplex (G4), a non-canonical DNA structure, in transcription regulatory regions. In this review, we focused on the epigenetic roles of 8-oxodG and the G4 and explored their interplay at the genomic level.
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Affiliation(s)
- Francesca Gorini
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy
| | - Susanna Ambrosio
- Department of Biology, University of Naples Federico II, 80138 Naples, Italy
| | - Luigi Lania
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy
| | - Barbara Majello
- Department of Biology, University of Naples Federico II, 80138 Naples, Italy
| | - Stefano Amente
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy
- Correspondence:
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Yudkina AV, Zharkov DO. Miscoding and DNA Polymerase Stalling by Methoxyamine-Adducted Abasic Sites. Chem Res Toxicol 2022; 35:303-314. [PMID: 35089032 DOI: 10.1021/acs.chemrestox.1c00359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Apurinic/apyrimidinic (AP) sites appear in DNA spontaneously and as intermediates of base excision DNA repair. AP sites are noninstructive lesions: they strongly block DNA polymerases, and if bypassed, the nature of the incorporated dNMP is mostly guided by the interactions within the polymerase-DNA active site. Many DNA polymerases follow the "A-rule", preferentially incorporating dAMP opposite to natural AP sites. Methoxyamine (MX), a small molecule, efficiently reacts with the aldehyde moiety of natural AP sites, thereby preventing their cleavage by APEX1, the major human AP endonuclease. MX is currently regarded as a possible sensitizer of cancer cells toward DNA-damaging drugs. To evaluate the mutagenic potential of MX, we have studied the utilization of various dNTPs by five DNA polymerases of different families encountering MX-AP adducts in the template in comparison with the natural aldehydic AP site. The Klenow fragment of Escherichia coli DNA polymerase I strictly followed the A-rule with both natural AP and MX-adducted AP sites. Phage RB69 DNA polymerase, a close relative of human DNA polymerases δ and ε, efficiently incorporated both dAMP and dGMP. DNA polymerase β mostly incorporated dAMP and dCMP, preferring dCMP opposite to the natural AP site and dAMP opposite to the MX-AP site, while DNA polymerase λ was selective for dGMP, apparently via the primer misalignment mechanism. Finally, translesion DNA polymerase κ also followed the A-rule for MX-AP and additionally incorporated dCMP opposite to a natural AP site. Overall, the MX-AP site, despite structural differences, was similar to the natural AP site in terms of the dNMP misincorporation preference but was bypassed less efficiently by all polymerases except for Pol κ.
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Affiliation(s)
- Anna V Yudkina
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Avenue, Novosibirsk 630090, Russia
| | - Dmitry O Zharkov
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Avenue, Novosibirsk 630090, Russia.,Novosibirsk State University, 2 Pirogova Street, Novosibirsk 630090, Russia
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Wei P, Long D, Tan Y, Xing W, Li X, Yang K, Liu H. Integrated Pharmacogenetics Analysis of the Three Fangjis Decoctions for Treating Arrhythmias Based on Molecular Network Patterns. Front Cardiovasc Med 2022; 8:726694. [PMID: 35004871 PMCID: PMC8739471 DOI: 10.3389/fcvm.2021.726694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022] Open
Abstract
Aim: To explore the diverse target distribution and variable mechanisms of different fangjis prescriptions when treating arrhythmias based on the systems pharmacology. Methods: The active ingredients and their corresponding targets were acquired from the three fangjis [Zhigancao Tang (ZT), Guizhigancao Longgumuli Tang (GLT), and Huanglian E'jiao Tang (HET)] and the arrhythmia-related genes were identified based on comprehensive database screening. Networks were constructed between the fangjis and arrhythmia and used to define arrhythmia modules. Common and differential gene targets were identified within the arrhythmia network modules and the cover rate (CR) matrix was applied to compare the contributions of the fangjis to the network and modules. Comparative pharmacogenetics analyses were then conducted to define the arrhythmia-related signaling pathways regulated by the fangjis prescriptions. Finally, the divergence and convergence points of the arrhythmia pathways were deciphered based on databases and the published literature. Results: A total of 187, 105, and 68 active ingredients and 1,139, 1,195, and 811 corresponding gene targets of the three fangjis were obtained and 102 arrhythmia-related genes were acquired. An arrhythmia network was constructed and subdivided into 4 modules. For the target distribution analysis, 65.4% of genes were regulated by the three fangjis within the arrhythmia network. ZT and GLT were more similar to each other, mainly regulated by module two, whereas HET was divided among all the modules. From the perspective of signal transduction, calcium-related pathways [calcium, cyclic guanosine 3′,5′-monophosphate (cGMP)-PKG, and cyclic adenosine 3′,5′-monophosphate (cAMP)] and endocrine system-related pathways (oxytocin signaling pathway and renin secretion pathways) were associated with all the three fangjis prescriptions. Nevertheless, heterogeneity existed between the biological processes and pathway distribution among the three prescriptions. GLT and HET were particularly inclined toward the conditions involving abnormal hormone secretion, whereas ZT tended toward renin-angiotensin-aldosterone system (RAAS) disorders. However, calcium signaling-related pathways prominently feature in the pharmacological activities of the decoctions. Experimental validation indicated that ZT, GLT, and HET significantly shortened the duration of ventricular arrhythmia (VA) and downregulated the expression of CALM2 and interleukin-6 (IL-6) messenger RNAs (mRNAs); GLT and HET downregulated the expression of CALM1 and NOS3 mRNAs; HET downregulated the expression of CRP mRNA. Conclusion: Comparing the various distributions of the three fangjis, pathways provide evidence with respect to precise applications toward individualized arrhythmia treatments.
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Affiliation(s)
- Penglu Wei
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Dehuai Long
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yupei Tan
- Beijing University of Chinese Medicine, Beijing, China
| | - Wenlong Xing
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiang Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Kuo Yang
- School of Computer and Information Technology, Institute of Medical Intelligence, Beijing Jiaotong University, Beijing, China
| | - Hongxu Liu
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
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Base excision repair and its implications to cancer therapy. Essays Biochem 2021; 64:831-843. [PMID: 32648895 PMCID: PMC7588666 DOI: 10.1042/ebc20200013] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 12/15/2022]
Abstract
Base excision repair (BER) has evolved to preserve the integrity of DNA following cellular oxidative stress and in response to exogenous insults. The pathway is a coordinated, sequential process involving 30 proteins or more in which single strand breaks are generated as intermediates during the repair process. While deficiencies in BER activity can lead to high mutation rates and tumorigenesis, cancer cells often rely on increased BER activity to tolerate oxidative stress. Targeting BER has been an attractive strategy to overwhelm cancer cells with DNA damage, improve the efficacy of radiotherapy and/or chemotherapy, or form part of a lethal combination with a cancer specific mutation/loss of function. We provide an update on the progress of inhibitors to enzymes involved in BER, and some of the challenges faced with targeting the BER pathway.
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Dymova MA, Endutkin AV, Polunovsky VV, Zakabunin AI, Khrapov EA, Torgasheva NA, Yudkina AV, Mechetin GV, Filipenko ML, Zharkov DO. Characterization of Recombinant Endonuclease IV from Mycobacterium tuberculosis. Mol Biol 2021. [DOI: 10.1134/s0026893321020059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Coyne GO, Kummar S, Meehan RS, Do K, Collins JM, Anderson L, Ishii K, Takebe N, Zlott J, Juwara L, Piekarz R, Streicher H, Sharon E, Rubinstein L, Voth AR, Lozier J, Dull AB, Wilsker D, Hinoue T, Laird PW, Ferry-Galow KV, Kinders RJ, Parchment RE, Doroshow JH, Chen AP. Phase I trial of TRC102 (methoxyamine HCl) in combination with temozolomide in patients with relapsed solid tumors and lymphomas. Oncotarget 2020; 11:3959-3971. [PMID: 33216844 PMCID: PMC7646836 DOI: 10.18632/oncotarget.27784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/29/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND TRC102 inhibits base excision repair by binding abasic sites and preventing AP endonuclease processing; it potentiates the activity of alkylating agents, including temozolomide, in murine models. In published xenograft studies, TRC102 enhanced the antitumor effect of temozolomide regardless of cell line genetic characteristics, e.g., O6-methylguanine DNA methyltransferase (MGMT), mismatch repair (MMR), or p53 status. MATERIALS AND METHODS We conducted a phase 1 trial of TRC102 with temozolomide given orally on days 1-5 of 28-day cycles in adult patients with refractory solid tumors that had progressed on standard therapy. Tumor induction of nuclear biomarkers of DNA damage response (DDR) γH2AX, pNBs1, and Rad51 was assessed in the context of MGMT and MMR protein expression for expansion cohort patients. RESULTS Fifty-two patients were enrolled (37 escalation, 15 expansion) with 51 evaluable for response. The recommended phase 2 dose was 125 mg TRC102, 150 mg/m2 temozolomide QDx5. Common adverse events (grade 3/4) included anemia (19%), lymphopenia (12%), and neutropenia (10%). Four patients achieved partial responses (1 non-small cell lung cancer, 2 granulosa cell ovarian cancer, and 1 colon cancer) and 13 patients had a best response of stable disease. Retrospective analysis of 15 expansion cohort patients did not demonstrate a correlation between low tumor MGMT expression and patient response, but treatment induced nuclear Rad51 responses in 6 of 12 patients. CONCLUSIONS The combination of TRC 102 with temozolomide is active, with 4 of 51 patients experiencing a partial response and 13 of 51 experiencing stable disease, and the side effect profile is manageable.
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Affiliation(s)
- Geraldine O'Sullivan Coyne
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shivaani Kummar
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Current address: Knight Cancer Institute, Oregon Health Sciences University, Portland, OR, USA
| | - Robert S. Meehan
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Khanh Do
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jerry M. Collins
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, Rockville, MD, USA
| | - Larry Anderson
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, Rockville, MD, USA
| | - Kazusa Ishii
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Naoko Takebe
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jennifer Zlott
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lamin Juwara
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Richard Piekarz
- Cancer Therapy Evaluation Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Howard Streicher
- Cancer Therapy Evaluation Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Elad Sharon
- Cancer Therapy Evaluation Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Larry Rubinstein
- Biometric Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD, USA
| | - Andrea Regier Voth
- Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Jay Lozier
- Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Angie B. Dull
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Deborah Wilsker
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Toshinori Hinoue
- Van Andel Institute, Center for Epigenetics, Grand Rapids, MI, USA
| | - Peter W. Laird
- Van Andel Institute, Center for Epigenetics, Grand Rapids, MI, USA
| | - Katherine V. Ferry-Galow
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Robert J. Kinders
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Ralph E. Parchment
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - James H. Doroshow
- Division of Cancer Treatment and Diagnosis, and Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Alice P. Chen
- Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Raetz AG, Banda DM, Ma X, Xu G, Rajavel AN, McKibbin PL, Lebrilla CB, David SS. The DNA repair enzyme MUTYH potentiates cytotoxicity of the alkylating agent MNNG by interacting with abasic sites. J Biol Chem 2020; 295:3692-3707. [PMID: 32001618 DOI: 10.1074/jbc.ra119.010497] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/22/2020] [Indexed: 11/06/2022] Open
Abstract
Higher expression of the human DNA repair enzyme MUTYH has previously been shown to be strongly associated with reduced survival in a panel of 24 human lymphoblastoid cell lines exposed to the alkylating agent N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). The molecular mechanism of MUTYH-enhanced MNNG cytotoxicity is unclear, because MUTYH has a well-established role in the repair of oxidative DNA lesions. Here, we show in mouse embryonic fibroblasts (MEFs) that this MNNG-dependent phenotype does not involve oxidative DNA damage and occurs independently of both O6-methyl guanine adduct cytotoxicity and MUTYH-dependent glycosylase activity. We found that blocking of abasic (AP) sites abolishes higher survival of Mutyh-deficient (Mutyh -/-) MEFs, but this blockade had no additive cytotoxicity in WT MEFs, suggesting the cytotoxicity is due to MUTYH interactions with MNNG-induced AP sites. We found that recombinant mouse MUTYH tightly binds AP sites opposite all four canonical undamaged bases and stimulated apurinic/apyrimidinic endonuclease 1 (APE1)-mediated DNA incision. Consistent with these observations, we found that stable expression of WT, but not catalytically-inactive MUTYH, enhances MNNG cytotoxicity in Mutyh -/- MEFs and that MUTYH expression enhances MNNG-induced genomic strand breaks. Taken together, these results suggest that MUTYH enhances the rapid accumulation of AP-site intermediates by interacting with APE1, implicating MUTYH as a factor that modulates the delicate process of base-excision repair independently of its glycosylase activity.
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Affiliation(s)
- Alan G Raetz
- Department of Chemistry, University of California, Davis, California 95616
| | - Douglas M Banda
- Department of Chemistry, University of California, Davis, California 95616
| | - Xiaoyan Ma
- Department of Chemistry, University of California, Davis, California 95616
| | - Gege Xu
- Department of Chemistry, University of California, Davis, California 95616
| | - Anisha N Rajavel
- Department of Chemistry, University of California, Davis, California 95616
| | - Paige L McKibbin
- Department of Chemistry, University of California, Davis, California 95616
| | - Carlito B Lebrilla
- Department of Chemistry, University of California, Davis, California 95616
| | - Sheila S David
- Department of Chemistry, University of California, Davis, California 95616.
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DNA damage and repair measured by comet assay in cancer patients. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 843:95-110. [DOI: 10.1016/j.mrgentox.2019.05.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/14/2019] [Accepted: 05/18/2019] [Indexed: 02/08/2023]
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Wei PL, Gu H, Liu J, Wang Z. Development of Fangjiomics for Systems Elucidation of Synergistic Mechanism Underlying Combination Therapy. Comput Struct Biotechnol J 2018; 16:565-572. [PMID: 30546857 PMCID: PMC6279955 DOI: 10.1016/j.csbj.2018.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 02/08/2023] Open
Abstract
The rapid development of omics technology provides an opportunity for fulfilling the understanding of the synergistic mechanism of combination therapy. However, a systems theory to analyze synergy remains an ongoing challenge. Fangjiomics is a novel systems science based on a holistic theory integrated with reductionism which has been utilized to systematically elucidate the synergistic mechanisms underlying combination therapy using multi-target-, pathway- or network-based quantitative methods. Besides, our ability to understand the polyhierarchical structure in synergy is driven based on multi-level omics data fusion in Fangjiomics. According to the basic principle of “Jun-Chen-Zuo-Shi”, further global integration across various omics platforms and phenotype-driven quantitative multi-scale modeling would accelerate development in Fangjiomics-based dissection of synergy in multi-drug combination therapies. Fangjiomics is a novel systems science based on a holistic theory integrated with reductionism. We developed the pathway-based analysis of synergistic mechanisms in Fangjiomics. The theory of network-based synergistic targets is proposed in Fangjiomics. The hierarchical relationship of synergy in multilevel omics is dissected in Fangjiomics. The principle of “Jun-Chen-Zuo-Shi” is proposed to accelerate the development in Fangjiomics-based dissection of synergy.
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Affiliation(s)
- Peng-Lu Wei
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hao Gu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jun Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Zhong Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
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