1
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Singh A, Sonawane P, Kumar A, Singh H, Naumovich V, Pathak P, Grishina M, Khalilullah H, Jaremko M, Emwas AH, Verma A, Kumar P. Challenges and Opportunities in the Crusade of BRAF Inhibitors: From 2002 to 2022. ACS OMEGA 2023; 8:27819-27844. [PMID: 37576670 PMCID: PMC10413849 DOI: 10.1021/acsomega.3c00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/27/2023] [Indexed: 08/15/2023]
Abstract
Serine/threonine-protein kinase B-Raf (BRAF; RAF = rapidly accelerated fibrosarcoma) plays an important role in the mitogen-activated protein kinase (MAPK) signaling cascade. Somatic mutations in the BRAF gene were first discovered in 2002 by Davies et al., which was a major breakthrough in cancer research. Subsequently, three different classes of BRAF mutants have been discovered. This class includes class I monomeric mutants (BRAFV600), class II BRAF homodimer mutants (non-V600), and class III BRAF heterodimers (non-V600). Cancers caused by these include melanoma, thyroid cancer, ovarian cancer, colorectal cancer, nonsmall cell lung cancer, and others. In this study, we have highlighted the major binding pockets in BRAF protein, their active and inactive conformations with inhibitors, and BRAF dimerization and its importance in paradoxical activation and BRAF mutation. We have discussed the first-, second-, and third-generation drugs approved by the Food and Drug Administration and drugs under clinical trials with all four different binding approaches with DFG-IN/OUT and αC-IN/OUT for BRAF protein. We have investigated particular aspects and difficulties with all three generations of inhibitors. Finally, this study has also covered recent developments in synthetic BRAF inhibitors (from their discovery in 2002 to 2022), their unique properties, and importance in inhibiting BRAF mutants.
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Affiliation(s)
- Ankit
Kumar Singh
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Pankaj Sonawane
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Adarsh Kumar
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Harshwardhan Singh
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Vladislav Naumovich
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Prateek Pathak
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Maria Grishina
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Habibullah Khalilullah
- Department
of Pharmaceutical Chemistry and Pharmacognosy, Unaizah College of
Pharmacy, Qassim University, Unayzah 51911, Saudi Arabia
| | - Mariusz Jaremko
- Smart-Health
Initiative and Red Sea Research Center, Division of Biological and
Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Abdul-Hamid Emwas
- Core
Laboratories, King Abdullah University of
Science and Technology, Thuwal 23955-6900, Saudi
Arabia
| | - Amita Verma
- Bioorganic
and Medicinal Chemistry Research Laboratory, Department of Pharmaceutical
Sciences, Sam Higginbottom University of
Agriculture, Technology and Sciences, Prayagraj 211007, India
| | - Pradeep Kumar
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
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2
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Hu X, Khatri U, Shen T, Wu J. Progress and challenges in RET-targeted cancer therapy. Front Med 2023; 17:207-219. [PMID: 37131086 DOI: 10.1007/s11684-023-0985-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 03/06/2023] [Indexed: 05/04/2023]
Abstract
The rearranged during transfection (RET) is a receptor protein tyrosine kinase. Oncogenic RET fusions or mutations are found most often in non-small cell lung cancer (NSCLC) and in thyroid cancer, but also increasingly in various types of cancers at low rates. In the last few years, two potent and selective RET protein tyrosine kinase inhibitors (TKIs), pralsetinib (BLU-667) and selpercatinib (LOXO-292, LY3527723) were developed and received regulatory approval. Although pralsetinib and selpercatinib gave high overall response rates (ORRs), < 10% of patients achieved a complete response (CR). The RET TKI-tolerated residual tumors inevitably develop resistance by secondary target mutations, acquired alternative oncogenes, or MET amplification. RET G810 mutations located at the kinase solvent front site were identified as the major on-target mechanism of acquired resistance to both selpercatinib and pralsetinib. Several next-generation of RET TKIs capable of inhibiting the selpercatinib/pralsetinib-resistant RET mutants have progressed to clinical trials. However, it is likely that new TKI-adapted RET mutations will emerge to cause resistance to these next-generation of RET TKIs. Solving the problem requires a better understanding of the multiple mechanisms that support the RET TKI-tolerated persisters to identify a converging point of vulnerability to devise an effective co-treatment to eliminate the residual tumors.
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Affiliation(s)
- Xueqing Hu
- Peggy and Charles Stephenson Cancer Center, and Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Ujjwol Khatri
- Peggy and Charles Stephenson Cancer Center, and Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Tao Shen
- Peggy and Charles Stephenson Cancer Center, and Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Jie Wu
- Peggy and Charles Stephenson Cancer Center, and Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
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3
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Synthetic Heterocyclic Derivatives as Kinase Inhibitors Tested for the Treatment of Neuroblastoma. Molecules 2021; 26:molecules26237069. [PMID: 34885651 PMCID: PMC8658969 DOI: 10.3390/molecules26237069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 12/21/2022] Open
Abstract
In the last few years, small molecules endowed with different heterocyclic scaffolds have been developed as kinase inhibitors. Some of them are being tested at preclinical or clinical levels for the potential treatment of neuroblastoma (NB). This disease is the most common extracranial solid tumor in childhood and is responsible for 10% to 15% of pediatric cancer deaths. Despite the availability of some treatments, including the use of very toxic cytotoxic chemotherapeutic agents, high-risk (HR)-NB patients still have a poor prognosis and a survival rate below 50%. For these reasons, new pharmacological options are urgently needed. This review focuses on synthetic heterocyclic compounds published in the last five years, which showed at least some activity on this severe disease and act as kinase inhibitors. The specific mechanism of action, selectivity, and biological activity of these drug candidates are described, when established. Moreover, the most remarkable clinical trials are reported. Importantly, kinase inhibitors approved for other diseases have shown to be active and endowed with lower toxicity compared to conventional cytotoxic agents. The data collected in this article can be particularly useful for the researchers working in this area.
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4
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Saha D, Ryan KR, Lakkaniga NR, Acharya B, Garcia NG, Smith EL, Frett B. Targeting Rearranged during Transfection in Cancer: A Perspective on Small-Molecule Inhibitors and Their Clinical Development. J Med Chem 2021; 64:11747-11773. [PMID: 34402300 DOI: 10.1021/acs.jmedchem.0c02167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rearranged during transfection (RET) is a receptor tyrosine kinase essential for the normal development and maturation of a diverse range of tissues. Aberrant RET signaling in cancers, due to RET mutations, gene fusions, and overexpression, results in the activation of downstream pathways promoting survival, growth, and metastasis. Pharmacological manipulation of RET is effective in treating RET-driven cancers, and efforts toward developing RET-specific therapies have increased over the last 5 years. In 2020, RET-selective inhibitors pralsetinib and selpercatinib achieved clinical approval, which marked the first approvals for kinase inhibitors specifically developed to target the RET oncoprotein. This Perspective discusses current development and clinical applications for RET precision medicine by providing an overview of the incremental improvement of kinase inhibitors for use in RET-driven malignancies.
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Affiliation(s)
- Debasmita Saha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Katie Rose Ryan
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Naga Rajiv Lakkaniga
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Baku Acharya
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Noemi Garcia Garcia
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Erica Lane Smith
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
| | - Brendan Frett
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205 United States
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5
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Recent developments in mitogen activated protein kinase inhibitors as potential anticancer agents. Bioorg Chem 2021; 114:105161. [PMID: 34328852 DOI: 10.1016/j.bioorg.2021.105161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 01/06/2023]
Abstract
The mitogen activated protein kinase (MAPK) belongs to group of kinase that links the extracellular stimuli to intracellular response. The MAPK signalling pathway (RAS-RAF-MEK-ERK) involved in different pathological conditions like cancer, caused due to genetic or any other factor such as physical or environmental. Many studies have been conducted on the pathological view of MAPK cascade and its associated element like RAS, RAF, MEK, ERK or its isoforms, and still the research is going on particularly with respect to its activation, regulation and inhibition. The MAPK signalling pathway has become the area of research to identify new target for the management of cancer. A number of heterocyclics are key to fight with the cancer associated with these enzymes thus give some hope in the management of cancer by inhibiting MAPK cascade. In the present article, we have focussed on MAPK signalling pathway and role of different heterocyclic scaffolds bearing nitrogen, sulphur and oxygen and about their potential to block MAPK signalling pathway. The heterocyclics are gaining importance due to high potency and selectivity with less off-target effects against different targets involved in the MAPK signalling pathway. We have tried to cover recent advancements in the MAPK signalling pathway inhibitors with an aim to get better understanding of the mechanism of action of the compounds. Several compounds in the preclinical and clinical studies have been thoroughly dealt with. In addition to the synthetic compounds, a significant number of natural products containing heterocyclic moieties as MAPK signalling pathway inhibitors have been put together. The structure activity relationship along with docking studies have been discussed to apprehend the mechanistic studies of various compounds that will ultimately help to design and develop more MAPK signalling pathway inhibitors.
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6
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Ullah R, Yin Q, Snell AH, Wan L. RAF-MEK-ERK pathway in cancer evolution and treatment. Semin Cancer Biol 2021; 85:123-154. [PMID: 33992782 DOI: 10.1016/j.semcancer.2021.05.010] [Citation(s) in RCA: 115] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/03/2021] [Accepted: 05/06/2021] [Indexed: 12/13/2022]
Abstract
The RAF-MEK-ERK signaling cascade is a well-characterized MAPK pathway involved in cell proliferation and survival. The three-layered MAPK signaling cascade is initiated upon RTK and RAS activation. Three RAF isoforms ARAF, BRAF and CRAF, and their downstream MEK1/2 and ERK1/2 kinases constitute a coherently orchestrated signaling module that directs a range of physiological functions. Genetic alterations in this pathway are among the most prevalent in human cancers, which consist of numerous hot-spot mutations such as BRAFV600E. Oncogenic mutations in this pathway often override otherwise tightly regulated checkpoints to open the door for uncontrolled cell growth and neoplasia. The crosstalk between the RAF-MEK-ERK axis and other signaling pathways further extends the proliferative potential of this pathway in human cancers. In this review, we summarize the molecular architecture and physiological functions of the RAF-MEK-ERK pathway with emphasis on its dysregulations in human cancers, as well as the efforts made to target the RAF-MEK-ERK module using small molecule inhibitors.
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Affiliation(s)
- Rahim Ullah
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Qing Yin
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Aidan H Snell
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Lixin Wan
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA; Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.
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7
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Liu X, Hu X, Shen T, Li Q, Mooers BHM, Wu J. RET kinase alterations in targeted cancer therapy. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2020; 3:472-481. [PMID: 35582449 PMCID: PMC8992479 DOI: 10.20517/cdr.2020.15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 01/29/2023]
Abstract
The rearranged during transfection (RET) gene encodes a protein tyrosine kinase. RET alterations by point mutations and gene fusions were found in diverse cancers. RET fusions allow abnormal expression and activation of the oncogenic kinase, whereas only a few of RET point mutations found in human cancers are known oncogenic drivers. Earlier studies of RET-targeted therapy utilized multi-targeted protein tyrosine kinase inhibitors (TKIs) with RET inhibitor activity. These multi-targeted TKIs often led to high-grade adverse events and were subject to resistance caused by the gatekeeper mutations. Recently, two potent and selective RET TKIs, pralsetinib (BLU-667) and selpercatinib (LOXO-292), were developed. High response rates to these selective RET inhibitors across multiple forms of RET alterations in different types of cancers were observed in clinical trials, demonstrating the RET dependence in human cancers harboring these RET lesions. Pralsetinib and selpercatinib were effective in inhibiting RETV804L/M gatekeeper mutants. However, adaptive mutations that cause resistance to pralsetinib or selpercatinib at the solvent front RETG810 residue have been found, pointing to the need for the development of the next-generation of RET TKIs.
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Affiliation(s)
- Xuan Liu
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Authors contributed equally
| | - Xueqing Hu
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Medical Oncology and Cancer Institute, ShuGuang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.,Authors contributed equally
| | - Tao Shen
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Qi Li
- Department of Medical Oncology and Cancer Institute, ShuGuang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Blaine H M Mooers
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jie Wu
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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8
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Flynn SM, Lesperance J, Macias A, Phanhthilath N, Paul MR, Kim JW, Tamayo P, Zage PE. The multikinase inhibitor RXDX-105 is effective against neuroblastoma in vitro and in vivo. Oncotarget 2019; 10:6323-6333. [PMID: 31695841 PMCID: PMC6824878 DOI: 10.18632/oncotarget.27259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/10/2019] [Indexed: 12/27/2022] Open
Abstract
Neuroblastoma is the most common extracranial solid tumor of childhood and accounts for 15% of all pediatric cancer-related deaths. New therapies are needed to improve outcomes for children with high-risk and relapsed tumors. Inhibitors of the RET kinase and the RAS-MAPK pathway have previously been shown to be effective against neuroblastoma, suggesting that combined inhibition may have increased efficacy. RXDX-105 is a small molecule inhibitor of multiple kinases, including the RET and BRAF kinases. We found that treatment of neuroblastoma cells with RXDX-105 resulted in a significant decrease in cell viability and proliferation in vitro and in tumor growth and tumor vascularity in vivo. Treatment with RXDX-105 inhibited RET phosphorylation and phosphorylation of the MEK and ERK kinases in neuroblastoma cells and xenograft tumors, and RXDX-105 treatment induced both apoptosis and cell cycle arrest. RXDX-105 also showed enhanced efficacy in combination with 13-cis-retinoic acid, which is currently a component of maintenance therapy for children with high-risk neuroblastoma. Our results demonstrate that RXDX-105 shows promise as a novel therapeutic agent for children with high-risk and relapsed neuroblastoma.
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Affiliation(s)
- Sean M Flynn
- Department of Surgery, University of California San Diego, La Jolla, CA, USA
| | - Jacqueline Lesperance
- Department of Pediatrics, Division of Hematology-Oncology, University of California San Diego, La Jolla, CA, USA
| | - Andrew Macias
- Department of Pediatrics, Division of Hematology-Oncology, University of California San Diego, La Jolla, CA, USA
| | - Nikki Phanhthilath
- Department of Pediatrics, Division of Hematology-Oncology, University of California San Diego, La Jolla, CA, USA
| | - Megan Rose Paul
- Department of Pediatrics, Division of Hematology-Oncology, University of California San Diego, La Jolla, CA, USA.,Peckham Center for Cancer and Blood Disorders, Rady Children's Hospital, San Diego, CA, USA
| | - Jong Wook Kim
- Department of Medicine, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Pablo Tamayo
- Department of Medicine, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Peter E Zage
- Department of Pediatrics, Division of Hematology-Oncology, University of California San Diego, La Jolla, CA, USA.,Peckham Center for Cancer and Blood Disorders, Rady Children's Hospital, San Diego, CA, USA.,Department of Medicine, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
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9
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Man RJ, Zhang YL, Jiang AQ, Zhu HL. A patent review of RAF kinase inhibitors (2010–2018). Expert Opin Ther Pat 2019; 29:675-688. [DOI: 10.1080/13543776.2019.1651842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ruo-Jun Man
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
- College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, People’s Republic of China
| | - Ya-Liang Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
| | - Ai-Qin Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
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10
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Li H, Yu Y, Zhao Y, Wu D, Yu X, Lu J, Chen Z, Zhang H, Hu Y, Zhai Y, Su J, Aheman A, De Las Casas A, Jin J, Xu X, Shi Z, Woodfield SE, Vasudevan SA, Agarwal S, Yan Y, Yang J, Foster JH. Small molecule inhibitor agerafenib effectively suppresses neuroblastoma tumor growth in mouse models via inhibiting ERK MAPK signaling. Cancer Lett 2019; 457:129-141. [PMID: 31100410 DOI: 10.1016/j.canlet.2019.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 12/19/2022]
Abstract
Neuroblastoma (NB) is the most common extracranial solid tumor in early childhood. Despite intensive multimodal therapy, nearly half of children with high-risk disease will relapse with therapy-resistant tumors. Dysregulation of MAPK pathway has been implicated in the pathogenesis of relapsed and refractory NB patients, which underscores the possibility of targeting MAPK signaling cascade as a novel therapeutic strategy. In this study, we found that high expressions of RAF family kinases correlated with advanced tumor stage, high-risk disease, tumor progression, and poor overall survival. Targeted inhibition of RAF family kinases with the novel small molecule inhibitor agerafenib abrogated the activation of ERK MAPK pathway in NB cells. Agerafenib significantly inhibited the cell proliferation and colony formation ability of NB cells in vitro, and its combination with traditional chemotherapy showed a synergistic pro-apoptotic effect. More importantly, agerafenib exhibited a favorable toxicity profile, potently suppressed tumor growth, and prolonged survival in NB mouse models. In conclusion, our preclinical data suggest that agerafenib might be an effective therapeutic agent for NB treatment, both as a single-agent and in combination with chemotherapy.
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Affiliation(s)
- Hui Li
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA; Department of Cardiothoracic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Yang Yu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yanling Zhao
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Deanna Wu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Xiaoman Yu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jiaxiong Lu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Zhenghu Chen
- Division of Pediatric Surgery, Texas Children's Hospital Department of Surgery, Michael E. DeBakey Department of Surgery, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Huiyuan Zhang
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yongguang Hu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yuanfen Zhai
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jun Su
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ayinuer Aheman
- Division of Pediatric Surgery, Texas Children's Hospital Department of Surgery, Michael E. DeBakey Department of Surgery, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Augusto De Las Casas
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jingling Jin
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Xin Xu
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Zhongcheng Shi
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sarah E Woodfield
- Division of Pediatric Surgery, Texas Children's Hospital Department of Surgery, Michael E. DeBakey Department of Surgery, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sanjeev A Vasudevan
- Division of Pediatric Surgery, Texas Children's Hospital Department of Surgery, Michael E. DeBakey Department of Surgery, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Saurabh Agarwal
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yusheng Yan
- Department of Cardiothoracic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Jianhua Yang
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Jennifer H Foster
- Texas Children's Cancer Center, Department of Pediatrics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
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11
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Jiang C, Xie L, Zhang Y, Fujinaga M, Mori W, Kurihara Y, Yamasaki T, Wang F, Zhang MR. Pharmacokinetic Evaluation of [ 11C]CEP-32496 in Nude Mice Bearing BRAF V600E Mutation-Induced Melanomas. Mol Imaging 2019; 17:1536012118795952. [PMID: 30251592 PMCID: PMC6156206 DOI: 10.1177/1536012118795952] [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] [Indexed: 11/16/2022] Open
Abstract
CEP-32496, also known as RXDX-105 or Agerafenib, is a new orally active inhibitor for the mutated v-raf murine sarcoma viral oncogene homolog B1 (BRAFV600E), which has attracted considerable attention in clinical trials for the treatment of human cancers. Here, we used carbon-11-labeled CEP-32496 ([11C]CEP-32496) as a positron emission tomography (PET) radiotracer to evaluate its pharmacokinetic properties and explore its potential for in vivo imaging. Following radiotracer synthesis, we performed in vitro binding assays and autoradiography of [11C]CEP-32496 in the A375 melanoma cell line and on tumor tissue sections from mice harboring the BRAFV600E mutation. These were followed by PET scans and biodistribution studies on nude mice bearing subcutaneous A375 cell-induced melanoma. [11C]CEP-32496 showed high binding affinity for BRAFV600E-positive A375 melanoma cells and densely accumulated in the respective tissue sections; this could be blocked by the BRAFV600E selective antagonist sorafenib and by unlabeled CEP-32496. The PET and biodistribution results revealed that [11C]CEP-32496 accumulated continuously but slowly into the tumor within a period of 0 to 60 minutes postinjection in A375-melanoma-bearing nude mice. Metabolite analysis showed high in vivo stability of [11C]CEP-32496 in plasma. Our results indicate that [11C]CEP-32496 has excellent specificity and affinity for the BRAFV600E mutation in vitro, while its noninvasive personalized diagnostic role needs to be studied further.
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Affiliation(s)
- Cuiping Jiang
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.,2 Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Lin Xie
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Yiding Zhang
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Masayuki Fujinaga
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Wakana Mori
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Yusuke Kurihara
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Tomoteru Yamasaki
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Feng Wang
- 2 Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ming-Rong Zhang
- 1 Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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12
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Shaw J, Dale I, Hemsley P, Leach L, Dekki N, Orme JP, Talbot V, Narvaez AJ, Bista M, Martinez Molina D, Dabrowski M, Main MJ, Gianni D. Positioning High-Throughput CETSA in Early Drug Discovery through Screening against B-Raf and PARP1. SLAS DISCOVERY 2018; 24:121-132. [PMID: 30543471 PMCID: PMC6484527 DOI: 10.1177/2472555218813332] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Methods to measure cellular target engagement are increasingly being used in early drug discovery. The Cellular Thermal Shift Assay (CETSA) is one such method. CETSA can investigate target engagement by measuring changes in protein thermal stability upon compound binding within the intracellular environment. It can be performed in high-throughput, microplate-based formats to enable broader application to early drug discovery campaigns, though high-throughput forms of CETSA have only been reported for a limited number of targets. CETSA offers the advantage of investigating the target of interest in its physiological environment and native state, but it is not clear yet how well this technology correlates to more established and conventional cellular and biochemical approaches widely used in drug discovery. We report two novel high-throughput CETSA (CETSA HT) assays for B-Raf and PARP1, demonstrating the application of this technology to additional targets. By performing comparative analyses with other assays, we show that CETSA HT correlates well with other screening technologies and can be applied throughout various stages of hit identification and lead optimization. Our results support the use of CETSA HT as a broadly applicable and valuable methodology to help drive drug discovery campaigns to molecules that engage the intended target in cells.
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Affiliation(s)
- Joseph Shaw
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Ian Dale
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Paul Hemsley
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Lindsey Leach
- 2 Hit Discovery, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Alderley Park, UK
| | | | - Jonathan P Orme
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Verity Talbot
- 4 Mechanistic Biology & Profiling, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Ana J Narvaez
- 4 Mechanistic Biology & Profiling, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - Michal Bista
- 5 Structure, Biophysics & Fragment Based Lead Generation, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | | | | | - Martin J Main
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK.,6 Medicines Discovery Catapult, Mereside, Alderley Park, UK
| | - Davide Gianni
- 1 Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge, UK
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13
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Mizar P, Arya R, Kim T, Cha S, Ryu KS, Yeo WS, Bae T, Kim DW, Park KH, Kim KK, Lee SS. Total Synthesis of Xanthoangelol B and Its Various Fragments: Toward Inhibition of Virulence Factor Production of Staphylococcus aureus. J Med Chem 2018; 61:10473-10487. [PMID: 30388007 PMCID: PMC6326535 DOI: 10.1021/acs.jmedchem.8b01012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
As
an alternative strategy to fight antibiotic resistance, two-component
systems (TCSs) have emerged as novel targets. Among TCSs, master virulence
regulators that control the expression of multiple virulence factors
are considered as excellent antivirulence targets. In Staphylococcus
aureus, virulence factor expression is tightly regulated
by a few master regulators, including the SaeRS TCS. In this study,
we used a SaeRS GFP-reporter system to screen natural compound inhibitors
of SaeRS, and identified xanthoangelol B 1, a prenylated
chalcone from Angelica keiskei as a hit. We have
synthesized 1 and its derivative PM-56 and
shown that 1 and PM-56 both had excellent
inhibitory potency against the SaeRS TCS, as demonstrated by various in vitro and in vivo experiments. As a
mode of action, 1 and PM-56 were shown to
bind directly to SaeS and inhibit its histidine kinase activity, which
suggests a possibility of a broad spectrum inhibitor of histidine
kinases.
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Affiliation(s)
- Pushpak Mizar
- Chemistry, Highfield Campus , University of Southampton , Southampton , SO17 1BJ , U.K
| | - Rekha Arya
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Truc Kim
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Soyoung Cha
- Protein Structure Research Group , Korea Basic Science Institute , 162 Yeongudanji-Ro, Ochang-Eup , Cheongju-Si , Chungcheongbuk-Do 28119 , Republic of Korea
| | - Kyoung-Seok Ryu
- Protein Structure Research Group , Korea Basic Science Institute , 162 Yeongudanji-Ro, Ochang-Eup , Cheongju-Si , Chungcheongbuk-Do 28119 , Republic of Korea
| | - Won-Sik Yeo
- Department of Microbiology and Immunology , Indiana University-School of Medicine-Northwest , Gary , Indiana 46408 , United States
| | - Taeok Bae
- Department of Microbiology and Immunology , Indiana University-School of Medicine-Northwest , Gary , Indiana 46408 , United States
| | - Dae Wook Kim
- Division of Applied Life Science (BK21 Plus), IALS , Gyeongsang National University , Jinju 52828 , Republic of Korea
| | - Ki Hun Park
- Division of Applied Life Science (BK21 Plus), IALS , Gyeongsang National University , Jinju 52828 , Republic of Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Seung Seo Lee
- Chemistry, Highfield Campus , University of Southampton , Southampton , SO17 1BJ , U.K
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14
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Pan JH, Zhou H, Zhu SB, Huang JL, Zhao XX, Ding H, Pan YL. Development of small-molecule therapeutics and strategies for targeting RAF kinase in BRAF-mutant colorectal cancer. Cancer Manag Res 2018; 10:2289-2301. [PMID: 30122982 PMCID: PMC6078078 DOI: 10.2147/cmar.s170105] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
RAF kinase is crucially involved in cell proliferation and survival in colorectal cancer (CRC). Patients with metastatic CRC (mCRC) harboring BRAF mutations (BRAFms) not only experience a poor prognosis but also benefit less from therapeutics targeting ERK signaling. With advances in RAF inhibitors and second-generation inhibitors including encorafenib and vemurafenib, which have been approved for treating BRAF-V600E malignancies, the combinatorial therapeutic strategies of RAF inhibitors elicit remarkable responses in patients with BRAF-V600E mCRC. However, the therapeutic efficacy is restricted by resistance, which might be due to RAF dimerization and reactivation of the MAPK pathway. In addition, the next-generation RAF inhibitors, which are characterized by varying structural and biochemical properties, have achieved preclinical and clinical advances. Herein, we summarize the existing mechanism of RAF kinases in CRC, including MAPK feedback reactivation of resistance to RAF inhibitors. We additionally summarize the development of three generations of RAF inhibitors and different therapeutic strategies including the combination of EGFR, BRAF, and PI3K inhibitors for BRAFm CRC treatment.
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Affiliation(s)
- Jing-Hua Pan
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
| | - Hong Zhou
- Department of Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China
| | - Sheng-Bin Zhu
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
| | - Jin-Lian Huang
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
| | - Xiao-Xu Zhao
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
| | - Hui Ding
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
| | - Yun-Long Pan
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China,
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15
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Affiliation(s)
- Bogos Agianian
- Department of Biochemistry and Department of Medicine, Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, New York 10461, United States
| | - Evripidis Gavathiotis
- Department of Biochemistry and Department of Medicine, Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, New York 10461, United States
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16
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Redaelli S, Plaza-Menacho I, Mologni L. Novel targeted therapeutics for MEN2. Endocr Relat Cancer 2018; 25:T53-T68. [PMID: 29348306 DOI: 10.1530/erc-17-0297] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/14/2017] [Indexed: 01/28/2023]
Abstract
The rearranged during transfection (RET) proto-oncogene was recognized as the multiple endocrine neoplasia type 2 (MEN2) causing gene in 1993. Since then, much effort has been put into a clear understanding of its oncogenic signaling, its biochemical function and ways to block its aberrant activation in MEN2 and related cancers. Several small molecules have been designed, developed or redirected as RET inhibitors for the treatment of MEN2 and sporadic MTC. However, current drugs are mostly active against several other kinases, as they were not originally developed for RET. This limits efficacy and poses safety issues. Therefore, there is still much to do to improve targeted MEN2 treatments. New, more potent and selective molecules, or combinatorial strategies may lead to more effective therapies in the near future. Here, we review the rationale for RET targeting in MEN2, the use of currently available drugs and novel preclinical and clinical RET inhibitor candidates.
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Affiliation(s)
- Sara Redaelli
- School of Medicine and SurgeryUniversity of Milano-Bicocca, Monza, Italy
| | | | - Luca Mologni
- School of Medicine and SurgeryUniversity of Milano-Bicocca, Monza, Italy
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17
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Abstract
Medullary thyroid cancer (MTC) is a relatively uncommon yet prognostically significant thyroid cancer. Several recent advances in the biology and current or potential treatment of MTC are notable. These include a new understanding of the developmental biology of the thyroid C cell, which heretofore was thought to develop from the neural crest. RET, encoded by the most common driver gene in MTC, has been shown to be a dual function kinase, thus expanding its potential substrate repertoire. Promising new therapeutic developments are occurring; many have recently progressed to clinical development. There are new insights into RET inhibitor therapy for MTC. New strategies are being developed to inhibit the RAS proteins, which are potential therapeutic targets in MTC. Potential emerging immunotherapies for MTC are discussed. However, gaps in our knowledge of the basic biology of the C cell, its transformation to MTC, and the mechanisms of resistance to therapy impede progress; further research in these areas would have a substantial impact on the field.
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Affiliation(s)
- Barry Nelkin
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 1650 Orleans Street, Baltimore, MD, 21287, USA
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18
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Abstract
The discovery that a subset of human tumours is dependent on mutationally deregulated BRAF kinase intensified the development of RAF inhibitors to be used as potential therapeutics. The US Food and Drug Administration (FDA)-approved second-generation RAF inhibitors vemurafenib and dabrafenib have elicited remarkable responses and improved survival of patients with BRAF-V600E/K melanoma, but their effectiveness is limited by resistance. Beyond melanoma, current clinical RAF inhibitors show modest efficacy when used for colorectal and thyroid BRAF-V600E tumours or for tumours harbouring BRAF alterations other than the V600 mutation. Accumulated experimental and clinical evidence indicates that the complex biochemical mechanisms of RAF kinase signalling account both for the effectiveness of RAF inhibitors and for the various mechanisms of tumour resistance to them. Recently, a number of next-generation RAF inhibitors, with diverse structural and biochemical properties, have entered preclinical and clinical development. In this Review, we discuss the current understanding of RAF kinase regulation, mechanisms of inhibitor action and related clinical resistance to these drugs. The recent elucidation of critical structural and biochemical aspects of RAF inhibitor action, combined with the availability of a number of structurally diverse RAF inhibitors currently in preclinical and clinical development, will enable the design of more effective RAF inhibitors and RAF-inhibitor-based therapeutic strategies, tailored to different clinical contexts.
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Affiliation(s)
- Zoi Karoulia
- Department of Oncological Sciences and Department of Dermatology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Evripidis Gavathiotis
- Department of Biochemistry, Department of Medicine, Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Poulikos I Poulikakos
- Department of Oncological Sciences and Department of Dermatology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
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19
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Farago AF, Azzoli CG. Beyond ALK and ROS1: RET, NTRK, EGFR and BRAF gene rearrangements in non-small cell lung cancer. Transl Lung Cancer Res 2017; 6:550-559. [PMID: 29114471 DOI: 10.21037/tlcr.2017.08.02] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The discovery of gene rearrangements involving the receptor tyrosine kinase genes ALK and ROS1 has revolutionized management of the subset of non-small cell lung cancers characterized by these alterations. The oncogenic fusion proteins expressed in these tumors drive cancer cell growth and survival, and targeted inhibition of this signaling can lead to dramatic and durable responses in patients. While the best characterized gene fusions in non-small cell lung cancer (NSCLC) involve ALK and ROS1, fusions involving other kinases including RET, NTRK, EGFR and BRAF are now established as additional targetable drivers. Here we review data supporting the roles of these fusions as oncogenic drivers, and the potential for targeting these fusions for improved clinical outcomes. These discoveries should encourage multiplexed molecular profiling of lung cancers using next-generation platforms which identify these gene fusions in order to expand treatment options for patients.
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Affiliation(s)
- Anna F Farago
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
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20
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Li GG, Somwar R, Joseph J, Smith RS, Hayashi T, Martin L, Franovic A, Schairer A, Martin E, Riely GJ, Harris J, Yan S, Wei G, Oliver JW, Patel R, Multani P, Ladanyi M, Drilon A. Antitumor Activity of RXDX-105 in Multiple Cancer Types with RET Rearrangements or Mutations. Clin Cancer Res 2017; 23:2981-2990. [PMID: 28011461 PMCID: PMC5477238 DOI: 10.1158/1078-0432.ccr-16-1887] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 11/20/2016] [Accepted: 12/12/2016] [Indexed: 11/16/2022]
Abstract
Purpose: While multikinase inhibitors with RET activity are active in RET-rearranged thyroid and lung cancers, objective response rates are relatively low and toxicity can be substantial. The development of novel RET inhibitors with improved potency and/or reduced toxicity is thus an unmet need. RXDX-105 is a small molecule kinase inhibitor that potently inhibits RET. The purpose of the preclinical and clinical studies was to evaluate the potential of RXDX-105 as an effective therapy for cancers driven by RET alterations.Experimental design: The RET-inhibitory activity of RXDX-105 was assessed by biochemical and cellular assays, followed by in vivo tumor growth inhibition studies in cell line- and patient-derived xenograft models. Antitumor activity in patients was assessed by imaging and Response Evaluation Criteria in Solid Tumors (RECIST).Results: Biochemically, RXDX-105 inhibited wild-type RET, CCDC6-RET, NCOA4-RET, PRKAR1A-RET, and RET M918T with low to subnanomolar activity while sparing VEGFR2/KDR and VEGFR1/FLT. RXDX-105 treatment resulted in dose-dependent inhibition of proliferation of CCDC6-RET-rearranged and RET C634W-mutant cell lines and inhibition of downstream signaling pathways. Significant tumor growth inhibition in CCDC6-RET, NCOA4-RET, and KIF5B-RET-containing xenografts was observed, with the concomitant inhibition of p-ERK, p-AKT, and p-PLCγ. Additionally, a patient with advanced RET-rearranged lung cancer had a rapid and sustained response to RXDX-105 in both intracranial and extracranial disease.Conclusions: These data support the inclusion of patients bearing RET alterations in ongoing and future molecularly enriched clinical trials to explore RXDX-105 efficacy across a variety of tumor types. Clin Cancer Res; 23(12); 2981-90. ©2016 AACR.
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Affiliation(s)
- Gang G Li
- Ignyta, Inc., San Diego, California.
| | - Romel Somwar
- Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Roger S Smith
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Takuo Hayashi
- Memorial Sloan Kettering Cancer Center, New York, New York
| | | | | | | | | | | | | | | | - Ge Wei
- Ignyta, Inc., San Diego, California
| | | | | | | | - Marc Ladanyi
- Memorial Sloan Kettering Cancer Center, New York, New York
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21
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De Falco V, Carlomagno F, Li HY, Santoro M. The molecular basis for RET tyrosine-kinase inhibitors in thyroid cancer. Best Pract Res Clin Endocrinol Metab 2017; 31:307-318. [PMID: 28911727 PMCID: PMC5624797 DOI: 10.1016/j.beem.2017.04.013] [Citation(s) in RCA: 24] [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] [Indexed: 12/12/2022]
Abstract
RET receptor tyrosine kinase acts as a mutated oncogenic driver in several human malignancies and it is over-expressed in other cancers. Small molecule compounds with RET tyrosine kinase inhibitory activity are being investigated for the targeted treatment of these malignancies. Multi-targeted compounds with RET inhibitory concentration in the nanomolar range have entered clinical practice. This review summarizes mechanisms of RET oncogenic activity and properties of new compounds that, at the preclinical stage, have demonstrated promising anti-RET activity.
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Affiliation(s)
- Valentina De Falco
- Istituto di Endocrinologia e Oncologia Sperimentale, CNR, Via S Pansini 5, 80131 Naples, Italy.
| | - Francesca Carlomagno
- Istituto di Endocrinologia e Oncologia Sperimentale, CNR, Via S Pansini 5, 80131 Naples, Italy; Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università Federico II, Via S Pansini 5, 80131 Naples, Italy.
| | - Hong-Yu Li
- University of Arkansas for Medical Sciences, College of Pharmacy, Division of Pharmaceutical Science, 200 South Cedar, Little Rock AR 72202, USA.
| | - Massimo Santoro
- Istituto di Endocrinologia e Oncologia Sperimentale, CNR, Via S Pansini 5, 80131 Naples, Italy; Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università Federico II, Via S Pansini 5, 80131 Naples, Italy.
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22
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Chen Y, Zheng Y, Jiang Q, Qin F, Zhang Y, Fu L, He G. Integrated bioinformatics, computational and experimental methods to discover novel Raf/extracellular-signal regulated kinase (ERK) dual inhibitors against breast cancer cells. Eur J Med Chem 2017; 127:997-1011. [DOI: 10.1016/j.ejmech.2016.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 11/04/2016] [Accepted: 11/05/2016] [Indexed: 12/19/2022]
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23
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Turski ML, Vidwans SJ, Janku F, Garrido-Laguna I, Munoz J, Schwab R, Subbiah V, Rodon J, Kurzrock R. Genomically Driven Tumors and Actionability across Histologies: BRAF-Mutant Cancers as a Paradigm. Mol Cancer Ther 2016; 15:533-47. [PMID: 27009213 DOI: 10.1158/1535-7163.mct-15-0643] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 01/04/2016] [Indexed: 11/16/2022]
Abstract
The diagnosis, classification, and management of cancer are traditionally dictated by the site of tumor origin, for example, breast or lung, and by specific histologic subtypes of site-of-origin cancers (e.g., non-small cell versus small cell lung cancer). However, with the advent of sequencing technologies allowing for rapid, low cost, and accurate sequencing of clinical samples, new observations suggest an expanded or different approach to the diagnosis and treatment of cancer-one driven by the unique molecular features of the tumor. We discuss a genomically driven strategy for cancer treatment using BRAF as an example. Several key points are highlighted: (i) molecular aberrations can be shared across cancers; (ii) approximately 15% of all cancers harbor BRAF mutations; and (iii) BRAF inhibitors, while approved only for melanoma, have reported activity across numerous cancers and related disease types bearing BRAF aberrations. However, BRAF-mutated colorectal cancer has shown poor response rate to BRAF inhibitor monotherapy, striking a cautionary note. Yet, even in this case, emerging data suggest BRAF-mutated colorectal cancers can respond well to BRAF inhibitors, albeit when administered in combination with other agents that impact resistance pathways. Taken together, these data suggest that molecular aberrations may be the basis for a new nosology for cancer. Mol Cancer Ther; 15(4); 533-47. ©2016 AACR.
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Affiliation(s)
| | | | - Filip Janku
- Department of Investigational Cancer Therapeutics - a Phase I Clinical Trials Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - Javier Munoz
- Banner MD Anderson Cancer Center, Gilbert, Arizona
| | - Richard Schwab
- Center for Personalized Cancer Therapy, Moores Cancer Center, University of California, San Diego, California
| | - Vivek Subbiah
- Department of Investigational Cancer Therapeutics - a Phase I Clinical Trials Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jordi Rodon
- Vall d'Hebron Institut d'Oncologia and Universitat Autonoma of Barcelona, Barcelona, Spain
| | - Razelle Kurzrock
- Center for Personalized Cancer Therapy, Moores Cancer Center, University of California, San Diego, California.
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24
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Uehling DE, Harris PA. Recent progress on MAP kinase pathway inhibitors. Bioorg Med Chem Lett 2015; 25:4047-56. [PMID: 26298497 DOI: 10.1016/j.bmcl.2015.07.093] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 07/11/2015] [Accepted: 07/28/2015] [Indexed: 10/23/2022]
Abstract
The RAS-RAF-MEK-ERK, or ERK signaling pathway propagates signals through an intracellular signal transduction cascade. Since approximately one third of human cancers are impacted by mutations in the ERK signaling pathway, intensive efforts to develop drugs targeting members of this cascade are ongoing. While efforts to develop drugs aimed at inhibiting RAS are still at an early stage, substantial progress in discovering clinical drugs targeting RAF, MEK, and ERK have been made. This review will highlight the recent progress in this area.
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Affiliation(s)
- David E Uehling
- Department of Drug Discovery, Ontario Institute for Cancer Research, MaRS Centre, 661 University Avenue, Suite 510, Toronto, Ontario M5G 0A3, Canada.
| | - Philip A Harris
- Pattern Recognition Receptor DPU, GlaxoSmithKline, 1250 S. Collegeville Road, Collegeville, PA 19426-0989, United States
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25
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Fallahi P, Mazzi V, Vita R, Ferrari SM, Materazzi G, Galleri D, Benvenga S, Miccoli P, Antonelli A. New therapies for dedifferentiated papillary thyroid cancer. Int J Mol Sci 2015; 16:6153-82. [PMID: 25789503 PMCID: PMC4394525 DOI: 10.3390/ijms16036153] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 02/14/2015] [Accepted: 03/04/2015] [Indexed: 12/15/2022] Open
Abstract
The number of thyroid cancers is increasing. Standard treatment usually includes primary surgery, thyroid-stimulating hormone suppressive therapy, and ablation of the thyroid remnant with radioactive iodine (RAI). Despite the generally good prognosis of thyroid carcinoma, about 5% of patients will develop metastatic disease, which fails to respond to RAI, exhibiting a more aggressive behavior. The lack of specific, effective and well-tolerated drugs, the scarcity of data about the association of multi-targeting drugs, and the limited role of radioiodine for dedifferentiated thyroid cancer, call for further efforts in the field of new drugs development. Rearranged during transfection (RET)/papillary thyroid carcinoma gene rearrangements, BRAF (B-RAF proto-oncogene, serine/threonine kinase) gene mutations, RAS (rat sarcoma) mutations, and vascular endothelial growth factor receptor 2 angiogenesis pathways are some of the known pathways playing a crucial role in the development of thyroid cancer. Targeted novel compounds have been demonstrated to induce clinical responses and stabilization of disease. Sorafenib has been approved for differentiated thyroid cancer refractory to RAI.
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Affiliation(s)
- Poupak Fallahi
- Department of Clinical and Experimental Medicine, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - Valeria Mazzi
- Department of Clinical and Experimental Medicine, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - Roberto Vita
- Department of Clinical & Experimental Medicine, Section of Endocrinology, University of Messina, Piazza Pugliatti, 1, 98122 Messina, Italy.
| | - Silvia Martina Ferrari
- Department of Clinical and Experimental Medicine, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - Gabriele Materazzi
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - David Galleri
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - Salvatore Benvenga
- Department of Clinical & Experimental Medicine, Section of Endocrinology, University of Messina, Piazza Pugliatti, 1, 98122 Messina, Italy.
| | - Paolo Miccoli
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, Via Savi, 10, 56126 Pisa, Italy.
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26
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Abstract
New drugs targeting the mitogen-activated protein kinase (MAPK) pathway have generated striking clinical response in melanoma therapy. From the discovery of BRAF mutation in melanoma in 2002, to the approval of first BRAF inhibitor vemurafenib for melanoma treatment by the US Food and Drug Administration in 2011, therapies targeting the MAPK pathway have been proven effective in less than a decade. The success of vemurafenib stimulated more intensive investigation of the molecular mechanisms of melanoma pathogenesis and development of new treatment strategies targeting specific molecules in MAPK pathway. Although selective BRAF inhibitors and MEK inhibitors demonstrated improved overall survival of metastatic melanoma patients, limited duration or development of resistance to BRAF inhibitors have been reported. Patients with metastatic melanoma still face very poor prognosis and lack of clarified therapies. Studies and multiple clinical trials on more potent and selective small molecule inhibitory compounds to further improve the clinical effects and overcome drug resistance are underway. In this review, we analyzed the therapeutic potentials of each member of the MAPK signaling pathway, summarized important MAPK-inhibiting drugs, and discussed the promising combination treatment targeting multiple targets in melanoma therapy, which may overcome the drawbacks of current drugs treatment.
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Affiliation(s)
- Yabin Cheng
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada
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[11C-carbonyl]CEP-32496: Radiosynthesis, biodistribution and PET study of brain uptake in P-gp/BCRP knockout mice. Bioorg Med Chem Lett 2014; 24:3574-7. [DOI: 10.1016/j.bmcl.2014.05.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/02/2014] [Accepted: 05/14/2014] [Indexed: 12/11/2022]
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Vandamme TF. Use of rodents as models of human diseases. J Pharm Bioallied Sci 2014; 6:2-9. [PMID: 24459397 PMCID: PMC3895289 DOI: 10.4103/0975-7406.124301] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 11/20/2013] [Accepted: 11/20/2013] [Indexed: 12/12/2022] Open
Abstract
Advances in molecular biology have significantly increased the understanding of the biology of different diseases. However, these discoveries have not yet been fully translated into improved treatments for patients with diseases such as cancers. One of the factors limiting the translation of knowledge from preclinical studies to the clinic has been the limitations of in vivo diseases models. In this brief review, we will discuss the advantages and disadvantages of rodent models that have been developed to simulate human pathologies, focusing in models that employ xenografts and genetic modification. Within the framework of genetically engineered mouse (GEM) models, we will review some of the current genetic strategies for modeling diseases in the mouse and the preclinical studies that have already been undertaken. We will also discuss how recent improvements in imaging technologies may increase the information derived from using these GEMs during early assessments of potential therapeutic pathways. Furthermore, it is interesting to note that one of the values of using a mouse model is the very rapid turnover rate of the animal, going through the process of birth to death in a very short timeframe relative to that of larger mammalian species.
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Affiliation(s)
- Thierry F Vandamme
- University of Strasbourg, Faculty of Pharmacy, UMR 7199 CNRS, Laboratory of Concept and Application of Bioactive Molecules, Biogalenic Team, 74 Route du Rhin, 67400 Illkirch Graffenstaden, France
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Abstract
BRAF represents one of the most frequently mutated protein kinase genes in human tumours. The mutation is commonly tested in pathology practice. BRAF mutation is seen in melanoma, papillary thyroid carcinoma (including papillary thyroid carcinoma arising from ovarian teratoma), ovarian serous tumours, colorectal carcinoma, gliomas, hepatobiliary carcinomas and hairy cell leukaemia. In these cancers, various genetic aberrations of the BRAF proto-oncogene, such as different point mutations and chromosomal rearrangements, have been reported. The most common mutation, BRAF V600E, can be detected by DNA sequencing and immunohistochemistry on formalin fixed, paraffin embedded tumour tissue. Detection of BRAF V600E mutation has the potential for clinical use as a diagnostic and prognostic marker. In addition, a great deal of research effort has been spent in strategies inhibiting its activity. Indeed, recent clinical trials involving BRAF selective inhibitors exhibited promising response rates in metastatic melanoma patients. Clinical trials are underway for other cancers. However, cutaneous side effects of treatment have been reported and therapeutic response to cancer is short-lived due to the emergence of several resistance mechanisms. In this review, we give an update on the clinical pathological relevance of BRAF mutation in cancer. It is hoped that the review will enhance the direction of future research and assist in more effective use of the knowledge of BRAF mutation in clinical practice.
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Abstract
Activating BRAF mutations, leading to constitutive activation of the MAPK signaling pathway, are common in a variety of human cancers. Several small molecule BRAF inhibitors have been developed during the last years and shown promising results in clinical trials, especially for metastatic melanoma, while they have been less effective in colon cancer. Two inhibitors, vemurafenib and dabrafenib, have been approved for treatment of melanoma. Unfortunately, in most patients who initially respond the tumors eventually develop acquired resistance to the BRAF inhibitors. So far, a number of resistance mechanisms have been identified, including secondary NRAS mutations and BRAF alternative splicing, leading to reactivation of the MAPK pathway. Other alterations, both upstream and downstream of BRAF can have the same effect, and activation of alternative pathways can also play a role in resistance to BRAF inhibitors. In addition, intra-tumor heterogeneity with the presence of clones of tumor cells lacking BRAF mutations needs to be considered, since wildtype BRAF can be activated by inhibitors designed to target mutated BRAF. Combination of the BRAF inhibitor dabrafenib with the MEK inhibitor trametinib has significantly prolonged progression free survival compared to dabrafenib alone in metastatic melanoma. Combination treatments of BRAF inhibitors with other agents may not only circumvent or delay resistance, but may also lead to fewer side effects, such as development of secondary squamous tumors. Several clinical trials are underway for many different BRAF mutation positive cancers with BRAF inhibitors alone or in combination with other small molecule inhibitors, immunotherapies or conventional chemotherapy.
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Matos AM, Francisco AP. Targets, structures, and recent approaches in malignant melanoma chemotherapy. ChemMedChem 2013; 8:1751-65. [PMID: 23956078 DOI: 10.1002/cmdc.201300248] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 07/23/2013] [Indexed: 12/24/2022]
Abstract
Malignant metastatic melanoma is one of the oncologic diseases with the worst clinical prognosis, due primarily to resistance phenomena against chemotherapeutic agents in current use. However, over the last few years, characterization of the molecular mechanisms involved in the development and progression of the disease has contributed to elucidation of the main pathways by which tissue invasion and metastasis can occur. More importantly, the identification of abnormalities in signaling cascades in melanoma cells has facilitated new therapeutic approaches against malignant melanoma through the design of highly potent and selective drugs with low associated toxicity. Ultimately, recognition of the restricted applicability of new chemotherapies in certain genetic contexts has led to significant improvements in the results of clinical trials, anticipating the existing need for investment in personalized therapies, and taking into account the molecular alterations observed in tumors. Although significant advances have been made in terms of extending the median overall survival rate and improving the quality of life for patients, the mechanisms that compromise in vivo drug efficacy remain poorly understood, particularly those concerning therapeutic resistance phenomena. This review summarizes recently validated targets from the perspective of the medicinal chemistry carried out in the design of the most promising structures.
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Affiliation(s)
- Ana Marta Matos
- Research Institute for Medicines and Pharmaceutical Sciences (i Med. UL), Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisbon (Portugal)
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Oncogenic activation of MEK/ERK primes melanoma cells for adaptation to endoplasmic reticulum stress. J Invest Dermatol 2013; 134:488-497. [PMID: 23921951 DOI: 10.1038/jid.2013.325] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 06/21/2013] [Accepted: 07/07/2013] [Indexed: 02/07/2023]
Abstract
Cancer cells commonly undergo chronic endoplasmic reticulum (ER) stress, to which the cells have to adapt for survival and proliferation. We report here that in melanoma cells intrinsic activation of the ER stress response/unfolded protein response (UPR) is, at least in part, caused by increased outputs of protein synthesis driven by oncogenic activation of mitogen-activated protein kinase kinase/extracellular signal-regulated kinase (MEK/ERK) and promotes proliferation and protects against apoptosis induced by acute ER stress. Inhibition of oncogenic BRAF(V600E) or MEK-attenuated activation of inositol-requiring enzyme 1 (IRE1) and activating transcription factor 6 (ATF6) signaling of the UPR in melanoma cells. This was associated with decreased phosphorylation of eukaryotic initiation factor 4E (eIF4E) and nascent protein synthesis and was recapitulated by knockdown of eIF4E. In line with this, introduction of BRAF(V600E) into melanocytes led to increases in eIF4E phosphorylation and protein production and triggered activation of the UPR. Similar to knockdown of glucose-regulated protein 78 (GRP78), inhibition of XBP1 decelerated melanoma cell proliferation and enhanced apoptosis induced by the pharmacological ER stress inducers tunicamycin and thapasigargin. Collectively, these results reveal that potentiation of adaptation to chronic ER stress is another mechanism by which oncogenic activation of the MEK/ERK pathway promotes the pathogenesis of melanoma.
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Zheng CX, Gu ZH, Han B, Zhang RX, Pan CM, Xiang Y, Rong XJ, Chen X, Li QY, Wan HY. Whole-exome sequencing to identify novel somatic mutations in squamous cell lung cancers. Int J Oncol 2013; 43:755-64. [PMID: 23799614 DOI: 10.3892/ijo.2013.1991] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/08/2013] [Indexed: 11/06/2022] Open
Abstract
Squamous cell lung cancer is a major histotype of non-small cell lung cancer (NSCLC) that is distinct from lung adenocarcinoma. We used whole-exome sequencing to identify novel non-synonymous somatic mutations in squamous cell lung cancer. We identified 101 single-nucleotide variants (SNVs) including 77 non-synonymous SNVs (67 missense and 10 nonsense mutations) and 11 INDELs causing frameshifts. We also found four SNVs located within splicing sites. We verified 62 of the SNVs (51 missense, 10 nonsense and 1 splicing-site mutation) and 10 of the INDELs as somatic mutations in lung cancer tissue. Sixteen of the mutated genes were also mutated in at least one patient with a different type of lung cancer in the Catalogue of Somatic Mutation in Cancer (COSMIC) database. Four genes (LPHN2, TP53, MYH2 and TGM2) were mutated in approximately 10% of the samples in the COSMIC database. We identified two missense mutations in C10orf137 and MS4A3 that also occurred in other solid-tumor tissues in the COSMIC database. We found another somatic mutation in EP300 that was mutated in 4.2% of the 2,020 solid-tumor samples in the COSMIC database. Taken together, our results implicate TP53, EP300, LPHN2, C10orf137, MYH2, TGM2 and MS4A3 as potential driver genes of squamous cell lung cancer.
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Affiliation(s)
- Cui-Xia Zheng
- Department of Respiration, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
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Ilie M, Long E, Hofman V, Dadone B, Marquette C, Mouroux J, Vignaud J, Begueret H, Merlio J, Capper D, von Deimling A, Emile J, Hofman P. Diagnostic value of immunohistochemistry for the detection of the BRAF mutation in primary lung adenocarcinoma Caucasian patients. Ann Oncol 2013; 24:742-8. [DOI: 10.1093/annonc/mds534] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Analysis of the BRAF(V600E) Mutation in Central Nervous System Tumors. Transl Oncol 2012; 5:430-6. [PMID: 23323158 DOI: 10.1593/tlo.12328] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 10/25/2012] [Accepted: 10/29/2012] [Indexed: 11/18/2022] Open
Abstract
BRAF(V600E) mutations are involved in the development of melanoma, colon cancer, and papillary thyroid carcinoma. These mutations are also found in primary brain tumors at low to moderate frequencies. In this study, we investigated a series of brain tumors to determine the prevalence and associated clinicopathologic features of BRAF(V600E) mutations. By direct sequencing, we analyzed 223 brain tumors, including 51 gangliogliomas (GGs), 45 pilocytic astrocytomas (PAs), 12 pleomorphic xanthoastrocytomas (PXAs), 35 glioblastomas (GBs), 28 anaplastic astrocytomas (AAs), 44 oligodendroglial tumors (ODGs), 3 anaplastic oligoastrocytomas, and 5 diffuse astrocytomas. Thirty-six cases (16.1%) exhibited the BRAF(V600E) mutation, including 66.7% of PXAs, 23.5% of GGs, 15.6% of PAs, and 9.7% of the malignant gliomas; the latter included 14.3% of AAs, 8.6% of GBs, and 4.5% of ODGs. Copy number aberration at the 7q34 (BRAF) locus was found in 73.1% of PAs and 50% of PXAs. 9p Homozygous deletion was found in 66.7% of PXAs, but it was not correlated with the BRAF(V600E) mutation. Patients' age, sex, histologic grade, and progression-free survival were also not correlated with the BRAF(V600E) mutation. The BRAF(V600E) mutation in brain tumors did not have prognostic value but is certainly a diagnostic marker and therapeutic target, not only for pediatric low-grade gliomas but also for malignant gliomas, even though the rate of mutation was not high. These results should be verified in a larger study with more cases and a longer follow-up period to overcome the limitation of small sample size.
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Bollag G, Tsai J, Zhang J, Zhang C, Ibrahim P, Nolop K, Hirth P. Vemurafenib: the first drug approved for BRAF-mutant cancer. Nat Rev Drug Discov 2012; 11:873-86. [PMID: 23060265 DOI: 10.1038/nrd3847] [Citation(s) in RCA: 543] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The identification of driver oncogenes has provided important targets for drugs that can change the landscape of cancer therapies. One such example is the BRAF oncogene, which is found in about half of all melanomas as well as several other cancers. As a druggable kinase, oncogenic BRAF has become a crucial target of small-molecule drug discovery efforts. Following a rapid clinical development path, vemurafenib (Zelboraf; Plexxikon/Roche) was approved for the treatment of BRAF-mutated metastatic melanoma in the United States in August 2011 and the European Union in February 2012. This Review describes the underlying biology of BRAF, the technology used to identify vemurafenib and its clinical development milestones, along with future prospects based on lessons learned during its development.
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Affiliation(s)
- Gideon Bollag
- Plexxikon, 91 Bolivar Drive, Berkeley, California 94710, USA.
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37
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Vincenten J, Smit EF, Ylstra B, Thunnissen E. Applying biomarker testing to clinical practice in lung cancer. Lung Cancer Manag 2012. [DOI: 10.2217/lmt.12.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY Until recently, therapeutic options for lung cancer were limited, and the division into non-small-cell lung cancer and small-cell lung cancer and staging of the disease was adequate for treatment decisions in most lung cancer patients. With the discovery of new treatment options, new challenges emerged. This review focuses on recent diagnostic and predictive biomarkers in lung cancer. In addition, new techniques will enable us to perform more molecular analyses in a shorter timespan. These developments require a modern interaction between treating physicians and pathologists for optimal tissue management, allowing more molecular markers to be tested.
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Affiliation(s)
- Julien Vincenten
- Department of Pulmonology, Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | - Egbert F Smit
- Department of Pulmonology, VU Medical Center, Amsterdam, The Netherlands
| | - Bauke Ylstra
- Department of Pathology, VU Medical Center, Amsterdam, The Netherlands
| | - Erik Thunnissen
- Department of Pathology, VU Medical Center, Amsterdam, The Netherlands
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