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Zhao K, Zhao Q, Dai X, Wen X, Luo X, Duan Y, Yang Z, Dai Q. Alantolactone enhances the sensitivity of melanoma to MAPK pathway inhibitors by targeting inhibition of STAT3 activation and down-regulating stem cell markers. Cancer Cell Int 2024; 24:191. [PMID: 38822350 PMCID: PMC11143683 DOI: 10.1186/s12935-024-03371-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/15/2024] [Indexed: 06/02/2024] Open
Abstract
Mitogen-activated protein kinase inhibitors (MAPKi) were the first line drugs for advanced melanoma patients with BRAF mutation. Targeted therapies have significant therapeutic effects; however, drug resistance hinders their long-term efficacy. Therefore, the development of new therapeutic strategies against MAPKi resistance is critical. Our previous results showed that MAPKi promote feedback activation of STAT3 signaling in BRAF-mutated cancer cells. Studies have shown that alantolactone inhibited the activation of STAT3 in a variety of tumor cells. Our results confirmed that alantolactone suppressed cell proliferation and promoted apoptosis by inhibiting STAT3 feedback activation induced by MAPKi and downregulating the expression of downstream Oct4 and Sox2. The inhibitory effect of alantolactone combined with a MAPKi on melanoma cells was significantly stronger than that on normal cells. In vivo and in vitro experiments showed that combination treatment was effective against drug-resistant melanomas. Our research indicates a potential novel combination therapy (alantolactone and MAPKi) for patients with BRAF-mutated melanoma.
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Affiliation(s)
- Kun Zhao
- Department of Respiratory and Critical Care Medicine, Xinqiao Hospital, The Army Medical University, Chongqing, 400037, China
| | - Qi Zhao
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou, Sichuan Province, 646000, China
| | - Xinzhi Dai
- The First Clinical Institute, Zunyi Medical University, Zunyi, Guizhou Province, 563003, China
| | - Xue Wen
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou, Sichuan Province, 646000, China
| | - Xing Luo
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou, Sichuan Province, 646000, China
| | - Yi Duan
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou, Sichuan Province, 646000, China
| | - Zhihui Yang
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou, Sichuan Province, 646000, China.
| | - Qiong Dai
- Department of Human Anatomy, School of Basic Medical Sciences, Southwest Medical University, No. 1, Section 1, Xianglin Road, Matan Long District, Luzhou, Sichuan Province, 646000, China.
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2
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DuBose E, Bevill SM, Mitchell DK, Sciaky N, Golitz BT, Dixon SAH, Rhodes SD, Bear JE, Johnson GL, Angus SP. Neratinib, a pan ERBB/HER inhibitor, restores sensitivity of PTEN-null, BRAFV600E melanoma to BRAF/MEK inhibition. Front Oncol 2024; 14:1191217. [PMID: 38854737 PMCID: PMC11159048 DOI: 10.3389/fonc.2024.1191217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 04/15/2024] [Indexed: 06/11/2024] Open
Abstract
Introduction Approximately 50% of melanomas harbor an activating BRAFV600E mutation. Standard of care involves a combination of inhibitors targeting mutant BRAF and MEK1/2, the substrate for BRAF in the MAPK pathway. PTEN loss-of-function mutations occur in ~40% of BRAFV600E melanomas, resulting in increased PI3K/AKT activity that enhances resistance to BRAF/MEK combination inhibitor therapy. Methods To compare the response of PTEN null to PTEN wild-type cells in an isogenic background, CRISPR/Cas9 was used to knock out PTEN in a melanoma cell line that harbors a BRAFV600E mutation. RNA sequencing, functional kinome analysis, and drug synergy screening were employed in the context of BRAF/MEK inhibition. Results RNA sequencing and functional kinome analysis revealed that the loss of PTEN led to an induction of FOXD3 and an increase in expression of the FOXD3 target gene, ERBB3/HER3. Inhibition of BRAF and MEK1/2 in PTEN null, BRAFV600E cells dramatically induced the expression of ERBB3/HER3 relative to wild-type cells. A synergy screen of epigenetic modifiers and kinase inhibitors in combination with BRAFi/MEKi revealed that the pan ERBB/HER inhibitor, neratinib, could reverse the resistance observed in PTEN null, BRAFV600E cells. Conclusions The findings indicate that PTEN null BRAFV600E melanoma exhibits increased reliance on ERBB/HER signaling when treated with clinically approved BRAFi/MEKi combinations. Future studies are warranted to test neratinib reversal of BRAFi/MEKi resistance in patient melanomas expressing ERBB3/HER3 in combination with its dimerization partner ERBB2/HER2.
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Affiliation(s)
- Evan DuBose
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Samantha M. Bevill
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Dana K. Mitchell
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Noah Sciaky
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Brian T. Golitz
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Shelley A. H. Dixon
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Steven D. Rhodes
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN, United States
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, United States
- Division of Pediatric Hematology/Oncology/Stem Cell Transplant, Indiana University School of Medicine, Indianapolis, IN, United States
| | - James E. Bear
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Gary L. Johnson
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC, United States
| | - Steven P. Angus
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, United States
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN, United States
- Division of Pediatric Hematology/Oncology/Stem Cell Transplant, Indiana University School of Medicine, Indianapolis, IN, United States
- Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States
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3
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Flaherty KT. A twenty year perspective on melanoma therapy. Pigment Cell Melanoma Res 2023; 36:563-575. [PMID: 37770281 DOI: 10.1111/pcmr.13125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 09/30/2023]
Abstract
Melanoma had long been considered to be particularly addressable with immunotherapy, but that reputation was built on modestly effective cytokine-based immunotherapy. CTLA-4 antibody therapy reinforced this legacy, but PD-1 antibodies transformed the melanoma treatment landscape and lead the way for immunotherapy to become standard treatment for more than half of the advanced cancer population. BRAF mutations were discovered in 8% of all cancer and nearly 50% of melanomas. Successful development of BRAF inhibitors and BRAF/MEK combination therapy in melanoma preceded regulatory approval across all cancer types. No cancer type saw outcomes improved by the same margin as melanoma in the decade of the 2010s.
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Affiliation(s)
- Keith T Flaherty
- Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
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4
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Alver TN, Heintz K, Hovig E, Bøe SL. Cooperative induction of receptor tyrosine kinases contributes to adaptive MAPK drug resistance in melanoma through the PI3K pathway. Cancer Rep (Hoboken) 2023; 6:e1736. [PMID: 36251678 PMCID: PMC9940011 DOI: 10.1002/cnr2.1736] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 08/05/2022] [Accepted: 09/07/2022] [Indexed: 02/22/2023] Open
Abstract
Vemurafenib-induced drug resistance in melanoma has been linked to receptor tyrosine kinase (RTK) upregulation. The MITF and SOX10 genes play roles as master regulators of melanocyte and melanoma development. Here, we aimed to explore the complex mechanisms behind the MITF/SOX10-controlled RTK-induced drug resistance in melanoma. To achieve this, we used a number of molecular techniques, including melanoma patient data from TCGA, vemurafenib-resistant melanoma cell lines, and knock-down studies. The melanoma cell lines were classified as proliferative or invasive based upon their MITF/AXL expression activity. We measured the change of expression activity for MITF/SOX10 and their receptor (AXL/ERBB3) and ligand (NRG1/GAS6) targets known to be involved in RTK-induced drug resistance after vemurafenib treatment. We find that melanoma cell lines characterized as proliferative (high MITF low AXL), transform into an invasive (low MITF, high AXL) cell state after vemurafenib resistance, indicating novel feedback loops and advanced compensatory regulation mechanisms between the master regulators, receptors, and ligands involved in vemurafenib-induced resistance. Together, our data disclose fine-tuned mechanisms involved in RTK-facilitated vemurafenib resistance that will be challenging to overcome by using single drug targeting strategies against melanoma.
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Affiliation(s)
- Tine Norman Alver
- Department of Tumor Biology, Institute for Cancer ResearchOslo University HospitalOsloNorway
- Department of Cancer Genetics, Institute for Cancer ResearchOslo University HospitalOsloNorway
- Faculty of MedicineUniversity of OsloOsloNorway
| | - Karen‐Marie Heintz
- Department of Tumor Biology, Institute for Cancer ResearchOslo University HospitalOsloNorway
- Faculty of MedicineUniversity of OsloOsloNorway
| | - Eivind Hovig
- Department of Tumor Biology, Institute for Cancer ResearchOslo University HospitalOsloNorway
- Department of InformaticsUniversity of OsloOsloNorway
| | - Sigurd L. Bøe
- Department of Medical BiochemistryOslo University Hospital, The Norwegian Radium HospitalOsloNorway
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A Network of MicroRNAs and mRNAs Involved in Melanosome Maturation and Trafficking Defines the Lower Response of Pigmentable Melanoma Cells to Targeted Therapy. Cancers (Basel) 2023; 15:cancers15030894. [PMID: 36765859 PMCID: PMC9913661 DOI: 10.3390/cancers15030894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/16/2023] [Accepted: 01/23/2023] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The ability to increase their degree of pigmentation is an adaptive response that confers pigmentable melanoma cells higher resistance to BRAF inhibitors (BRAFi) compared to non-pigmentable melanoma cells. METHODS Here, we compared the miRNome and the transcriptome profile of pigmentable 501Mel and SK-Mel-5 melanoma cells vs. non-pigmentable A375 melanoma cells, following treatment with the BRAFi vemurafenib (vem). In depth bioinformatic analyses (clusterProfiler, WGCNA and SWIMmeR) allowed us to identify the miRNAs, mRNAs and biological processes (BPs) that specifically characterize the response of pigmentable melanoma cells to the drug. Such BPs were studied using appropriate assays in vitro and in vivo (xenograft in zebrafish embryos). RESULTS Upon vem treatment, miR-192-5p, miR-211-5p, miR-374a-5p, miR-486-5p, miR-582-5p, miR-1260a and miR-7977, as well as GPR143, OCA2, RAB27A, RAB32 and TYRP1 mRNAs, are differentially expressed only in pigmentable cells. These miRNAs and mRNAs belong to BPs related to pigmentation, specifically melanosome maturation and trafficking. In fact, an increase in the number of intracellular melanosomes-due to increased maturation and/or trafficking-confers resistance to vem. CONCLUSION We demonstrated that the ability of pigmentable cells to increase the number of intracellular melanosomes fully accounts for their higher resistance to vem compared to non-pigmentable cells. In addition, we identified a network of miRNAs and mRNAs that are involved in melanosome maturation and/or trafficking. Finally, we provide the rationale for testing BRAFi in combination with inhibitors of these biological processes, so that pigmentable melanoma cells can be turned into more sensitive non-pigmentable cells.
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Maniyar RR, Chakraborty S, Jarboe T, Suriano R, Wallack M, Geliebter J, Tiwari RK. Interacting Genetic Lesions of Melanoma in the Tumor Microenvironment: Defining a Viable Therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1350:123-143. [PMID: 34888847 DOI: 10.1007/978-3-030-83282-7_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Melanoma is the most aggressive form of skin cancer with an estimated 106,110 newly diagnosed cases in the United States of America in 2021 leading to an approximated 7180 melanoma-induced deaths. Cancer typically arises from an accumulation of somatic mutations and can be associated with mutagenic or carcinogenic exposure. A key characteristic of melanoma is the extensive somatic mutation rate of 16.8 mutations/Mb, which is largely attributed to UV exposure. Bearing the highest mutational load, many of them occur in key driver pathways, most commonly the BRAFV600E in the mitogen-activated protein kinase (MAPK) pathway. This driver mutation is targeted clinically with FDA-approved therapies using small molecule inhibitors of oncogenic BRAFV600E and MEK, which has greatly expanded therapeutic intervention following a melanoma diagnosis. Up until 2011, therapeutic options for metastatic melanoma were limited, and treatment typically fell under the spectrum of surgery, radiotherapy, and chemotherapy.Attributed to the extensive mutation rate, as well as having the highest number of neoepitopes, melanoma is deemed to be extremely immunogenic. However, despite this highly immunogenic nature, melanoma is notorious for inducing an immunosuppressive microenvironment which can be relieved by checkpoint inhibitor therapy. The two molecules currently approved clinically are ipilimumab and nivolumab, which target the molecules CTLA-4 and PD-1, respectively.A plethora of immunomodulatory molecules exist, many with redundant functions. Additionally, these molecules are expressed not only by immune cells but also by tumor cells within the tumor microenvironment. Tumor profiling of these cell surface checkpoint molecules is necessary to optimize a clinical response. The presence of immunomodulatory molecules in melanoma, using data from The Cancer Genome Atlas and validation of expression in two model systems, human melanoma tissues and patient-derived melanoma cells, revealed that the expression levels of B and T lymphocyte attenuator (BTLA), TIM1, and CD226, concurrently with the BRAFV600E mutation status, significantly dictated overall survival in melanoma patients. These molecules, along with herpesvirus entry mediator (HVEM) and CD160, two molecules that are a part of the HVEM/BTLA/CD160 axis, had a higher expression in human melanoma tissues when compared to normal skin melanocytes and have unique roles to play in T cell activation. New links are being uncovered between the expression of immunomodulatory molecules and the BRAFV600E genetic lesion in melanoma. Small molecule inhibitors of the MAPK pathway regulate the surface expression of this multifaceted molecule, making BTLA a promising target for immuno-oncology to be targeted in combination with small molecule inhibitors, potentially alleviating T regulatory cell activation and improving patient prognosis.
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Affiliation(s)
- R R Maniyar
- Human Oncology and Pathogenesis Program, Ludwig Collaborative and Swim Across America Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - S Chakraborty
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - T Jarboe
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
| | - R Suriano
- Division of Natural Sciences, College of Mount Saint Vincent, Bronx, NY, USA
| | - M Wallack
- Department Surgery, Metropolitan Hospital, New York, NY, USA
| | - J Geliebter
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
| | - R K Tiwari
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA.
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Costa R, Muccioli S, Brillo V, Bachmann M, Szabò I, Leanza L. Mitochondrial dysfunction interferes with neural crest specification through the FoxD3 transcription factor. Pharmacol Res 2020; 164:105385. [PMID: 33348025 DOI: 10.1016/j.phrs.2020.105385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 11/28/2022]
Abstract
The neural crest is an important group of cells with pluripotency and migratory ability that is crucially involved in tissue and cell specification during development. Craniofacial shaping, sensory neurons, body asymmetry, and pigmentation are linked to neural crest functionality. Despite its prominent role in embryogenesis, neural crest specification as well as the possible part mitochondria play in such a process remains unclarified. Mitochondria are important organelles not only for respiration, but also for regulation of cell proliferation, differentiation and death. Modulation of mitochondrial fitness and depletion of mitochondrial ATP synthesis has been shown to down-regulate Wnt signaling, both in vitro and in vivo. Since Wnt signaling is one of the crucial players during neural crest induction/specification, we hypothesized a signaling cascade connecting mitochondria to embryonic development and neural crest migration and differentiation. Here, by using pharmacological and genetic modulators of mitochondrial function, we provide evidence that a crosstalk between mitochondrial energy homeostasis and Wnt signaling is important in the development of neural crest-derived tissues. Furthermore, our results highlight the possibility to modulate neural crest cell specification by tuning mitochondrial metabolism via FoxD3, an important transcription factor that is regulated by Wnt. FoxD3 ensures the correct embryonic development and contributes to the maintenance of cell stemness and to the induction of epithelial-to-mesenchymal transition. In summary, our work offers new insights into the molecular mechanism of action of FoxD3 and demonstrates that mitochondrial fitness is linked to the regulation of this important transcription factor via Wnt signaling in the context of neural crest specification.
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Affiliation(s)
- Roberto Costa
- Department of Biology, University of Padova, Padova, Italy
| | | | | | | | - Ildikò Szabò
- Department of Biology, University of Padova, Padova, Italy
| | - Luigi Leanza
- Department of Biology, University of Padova, Padova, Italy.
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Yu L, Peng F, Dong X, Chen Y, Sun D, Jiang S, Deng C. Sex-Determining Region Y Chromosome-Related High-Mobility-Group Box 10 in Cancer: A Potential Therapeutic Target. Front Cell Dev Biol 2020; 8:564740. [PMID: 33344444 PMCID: PMC7744619 DOI: 10.3389/fcell.2020.564740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 11/17/2020] [Indexed: 01/20/2023] Open
Abstract
Sex-determining region Y-related high mobility group-box 10 (SOX10), a member of the SOX family, has recently been highlighted as an essential transcriptional factor involved in developmental biology. Recently, the functionality of SOX 10 has been increasingly revealed by researchers worldwide. It has been reported that SOX10 significantly regulates the proliferation, migration, and apoptosis of tumors and is closely associated with the progression of cancer. In this review, we first introduce the basic background of the SOX family and SOX10 and then discuss the pathophysiological roles of SOX10 in cancer. Besides, we enumerate the application of SOX10 in the pathological diagnosis and therapeutic potential of cancer. Eventually, we summarize the potential directions and perspectives of SOX10 in neoplastic theranostics. The information compiled herein may assist in additional studies and increase the potential of SOX10 as a therapeutic target for cancer.
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Affiliation(s)
- Liming Yu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, Shenyang, China
| | - Fan Peng
- Department of Cardiology, Xijing Hopspital, The Airforce Military Medical University, Xi'an, China
| | - Xue Dong
- Outpatient Department of Liaoning Military Region, General Hospital of Northern Theater Command, Shenyang, China
| | - Ying Chen
- Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Dongdong Sun
- Department of Cardiology, Xijing Hopspital, The Airforce Military Medical University, Xi'an, China
| | - Shuai Jiang
- Department of Cardiology, Xijing Hopspital, The Airforce Military Medical University, Xi'an, China
| | - Chao Deng
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Lin CH, Lee HH, Chang WM, Lee FP, Chen LC, Lu LS, Lin YF. FOXD1 Repression Potentiates Radiation Effectiveness by Downregulating G3BP2 Expression and Promoting the Activation of TXNIP-Related Pathways in Oral Cancer. Cancers (Basel) 2020; 12:cancers12092690. [PMID: 32967107 PMCID: PMC7563336 DOI: 10.3390/cancers12092690] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Radioresistance remains a critical issue in treating oral cancer patients. This study was thus aimed to identify a potential drug target for enhancing the therapeutic effectiveness of irradiation and uncover a possible mechanism for radioresistance in oral cancer. Here we show that FOXD1, a gene encoding forkhead box d1 (Foxd1), is significantly upregulated in primary tumors compared to normal tissues and serves as a poor prognostic marker in oral cancer patients receiving radiotherapy. FOXD1 repression by a gene knockdown experiment dramatically enhanced the cytotoxic efficacy of irradiation probably via activating the p53-related DNA repairing pathways and reinforcing the T cell-mediated immune responses in oral cancer cells. Our findings demonstrate that FOXD1 may play a pivotal role in conferring radioresistance, which might provide a new strategy to combat the irradiation-insensitive oral cancer cells via therapeutically targeting FOXD1 activity. Abstract Radiotherapy is commonly used to treat oral cancer patients in the current clinics; however, a subpopulation of patients shows poor radiosensitivity. Therefore, the aim of this study is to identify a biomarker or druggable target to enhance the effectiveness of radiotherapy on oral cancer patients. By performing an in silico analysis against public databases, we found that the upregulation of FOXD1, a gene encoding forkhead box d1 (Foxd1), is extensively detected in primary tumors compared to normal tissues and associated with a poor outcome in oral cancer patients receiving irradiation treatment. Moreover, our data showed that the level of FOXD1 transcript is causally relevant to the effective dosage of irradiation in a panel of oral cancer cell lines. The FOXD1 knockdown (FOXD1-KD) dramatically suppressed the colony-forming ability of oral cancer cells after irradiation treatment. Differentially expressed genes analysis showed that G3BP2, a negative regulator of p53, is predominantly repressed after FOXD1-KD and transcriptionally regulated by Foxd1, as judged by a luciferase-based promoter assay in oral cancer cells. Gene set enrichment analysis significantly predicted the inhibition of E2F-related signaling pathway but the activation of the interferons (IFNs) and p53-associated cellular functions, which were further validated by luciferase reporter assays in the FOXD1-KD oral cancer cells. Robustly, our data showed that FOXD1-KD fosters the expression of TXNIP, a downstream effector of IFN signaling and activator of p53, in oral cancer cells. These findings suggest that FOXD1 targeting might potentiate the anti-cancer effectiveness of radiotherapy and promote immune surveillance on oral cancer.
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Affiliation(s)
- Che-Hsuan Lin
- Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (C.-H.L.); (F.-P.L.); (L.-C.C.)
- Department of Otolaryngology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
| | - Hsun-Hua Lee
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
- Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Neurology, Vertigo and Balance Impairment Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
| | - Wei-Min Chang
- School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan;
| | - Fei-Peng Lee
- Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (C.-H.L.); (F.-P.L.); (L.-C.C.)
- Department of Otolaryngology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
| | - Lung-Che Chen
- Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (C.-H.L.); (F.-P.L.); (L.-C.C.)
- Department of Otolaryngology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
| | - Long-Sheng Lu
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan;
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Yuan-Feng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
- Correspondence: ; Tel.: +886-2-2736-1661 (ext. 3106)
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Targeting BRD/BET proteins inhibits adaptive kinome upregulation and enhances the effects of BRAF/MEK inhibitors in melanoma. Br J Cancer 2020; 122:789-800. [PMID: 31932756 PMCID: PMC7078299 DOI: 10.1038/s41416-019-0724-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 11/07/2019] [Accepted: 12/19/2019] [Indexed: 11/17/2022] Open
Abstract
Background BRAF-mutant melanoma patients respond to BRAF inhibitors and MEK inhibitors (BRAFi/MEKi), but drug-tolerant cells persist, which may seed disease progression. Adaptive activation of receptor tyrosine kinases (RTKs) has been associated with melanoma cell drug tolerance following targeted therapy. While co-targeting individual RTKs can enhance the efficacy of BRAFi/MEKi effects, it remains unclear how to broadly target multiple RTKs to achieve more durable tumour growth inhibition. Methods The blockage of adaptive RTK responses by the new BET inhibitor (BETi), PLX51107, was measured by RPPA and Western blot. Melanoma growth was evaluated in vitro by colony assay and EdU staining, as well as in skin reconstructs, xenografts and PDX models following BRAFi, MEKi and/or PLX51107 treatment. Results Treatment with PLX51107 limited BRAFi/MEKi upregulation of ErbB3 and PDGFR-β expression levels. Similar effects were observed following BRD2/4 depletion. In stage III melanoma patients, expression of BRD2/4 was strongly correlated with ErbB3. PLX51107 enhanced the effects of BRAFi/MEKi on inhibiting melanoma growth in vitro, in human skin reconstructs and in xenografts in vivo. Continuous triple drug combination treatment resulted in significant weight loss in mice, but intermittent BETi combined with continuous BRAFi/MEKi treatment was tolerable and improved durable tumour inhibition outcomes. Conclusions Together, our data suggest that intermittent inhibition of BET proteins may improve the duration of responses following BRAFi/MEKi treatment in BRAF-mutant melanoma.
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Adaptive Responses as Mechanisms of Resistance to BRAF Inhibitors in Melanoma. Cancers (Basel) 2019; 11:cancers11081176. [PMID: 31416288 PMCID: PMC6721815 DOI: 10.3390/cancers11081176] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 12/14/2022] Open
Abstract
: The introduction of v-raf murine sarcoma viral oncogene homolog B (BRAF) inhibitors in melanoma patients with BRAF (V600E) mutations has demonstrated significant clinical benefits. However, rarely do tumours regress completely. Frequently, the reason for this is that therapies targeting specific oncogenic mutations induce a number of intrinsic compensatory mechanisms, also known as adaptive responses or feedback loops, that enhance the pro-survival and pro-proliferative capacity of a proportion of the original tumour population, thereby resulting in tumour progression. In this review we will summarize the known adaptive responses that limit BRAF mutant therapy and discuss potential novel combinatorial therapies to overcome resistance.
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Cardoso C, Serafim RB, Kawakami A, Gonçalves Pereira C, Vazquez VL, Valente V, Fisher DE, Espreafico EM. The lncRNA RMEL3 protects immortalized cells from serum withdrawal-induced growth arrest and promotes melanoma cell proliferation and tumor growth. Pigment Cell Melanoma Res 2019; 32:303-314. [PMID: 30457212 PMCID: PMC6613776 DOI: 10.1111/pcmr.12751] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 12/12/2022]
Abstract
RMEL3 is a recently identified lncRNA associated with BRAFV600E mutation and melanoma cell survival. Here, we demonstrate strong and moderate RMEL3 upregulation in BRAF and NRAS mutant melanoma cells, respectively, compared to melanocytes. High expression is also more frequent in cutaneous than in acral/mucosal melanomas, and analysis of an ICGC melanoma dataset showed that mutations in RMEL3 locus are preponderantly C > T substitutions at dipyrimidine sites including CC > TT, typical of UV signature. RMEL3 mutation does not correlate with RMEL3 levels, but does with poor patient survival, in TCGA melanoma dataset. Accordingly, RMEL3 lncRNA levels were significantly reduced in BRAFV600E melanoma cells upon treatment with BRAF or MEK inhibitors, supporting the notion that BRAF-MEK-ERK pathway plays a role to activate RMEL3 gene transcription. RMEL3 overexpression, in immortalized fibroblasts and melanoma cells, increased proliferation and survival under serum starvation, clonogenic ability, and xenografted melanoma tumor growth. Although future studies will be needed to elucidate the mechanistic activities of RMEL3, our data demonstrate that its overexpression bypasses the need of mitogen activation to sustain proliferation/survival of non-transformed cells and suggest an oncogenic role for RMEL3.
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Affiliation(s)
- Cibele Cardoso
- Department of Cell and Molecular Biology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Rodolfo B. Serafim
- Department of Cell and Molecular Biology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Akinori Kawakami
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Cristiano Gonçalves Pereira
- Department of Cell and Molecular Biology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Vinicius L. Vazquez
- Molecular Oncology Research Center (CPOM) and Melanoma/sarcoma Surgery Department, Barretos Cancer Hospital, Barretos, SP, Brazil
| | - Valeria Valente
- Department of Cell and Molecular Biology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Rodovia Araraquara - Jaú, Km 01 - s/n, Campos Ville, SP, 14800-903, Brazil; Center for Cell-Based Therapy CEPID/FAPESP, Ribeirão Preto, Brazil
| | - David E. Fisher
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Enilza M. Espreafico
- Department of Cell and Molecular Biology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Xu BN, Zhang L, Zhang DD, Song CY, Tian DL, Jiang WJ. Serum Fork-Head Box D3 (FOXD3) Expression Is Down-Regulated in and Associated with Diagnosis of Patients with Non-Small Cell Lung Cancer. Med Sci Monit 2018; 24:9504-9508. [PMID: 30596382 PMCID: PMC6324864 DOI: 10.12659/msm.896748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background The aim of this study was to detect the expression of fork-head box D3 (FOXD3) and investigate its diagnostic value in patients with non-small cell lung cancer (NSCLC). Material/Methods The relative expression of FOXD3 at mRNA and protein levels was determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blotting analysis, respectively. Chi-square test was used to explore the relevance of FOXD3 expression with clinical features of NSCLC patients. A receiver operating characteristic (ROC) curve was built to estimate the diagnostic value of FOXD3 in distinguishing NSCLC patients from healthy controls. Results Serum FOXD3 expression was weakly expressed in NSCLC patients compared to the controls at mRNA and protein levels (P<0.001) and low FOXD3 expression was positively correlated with TNM stage, lymph node metastasis, and differentiation. The ROC curve indicated that FOXD3 acts as a diagnostic bio-marker for NSCLC patients, with an AUC of 0.826 corresponding to a sensitivity of 77.1% and a specificity of 74.6%, and an optimal cutoff point of 2.38. Conclusions Decreased expression of serum FOXD3 was observed in NSCLC patients, and it was found to be a potential molecular marker for the diagnosis of NSCLC.
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Affiliation(s)
- Bao-Ning Xu
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Lei Zhang
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Dan-Dan Zhang
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Cheng-Yang Song
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Da-Li Tian
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Wen-Jun Jiang
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
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14
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Han S, Ren Y, He W, Liu H, Zhi Z, Zhu X, Yang T, Rong Y, Ma B, Purwin TJ, Ouyang Z, Li C, Wang X, Wang X, Yang H, Zheng Y, Aplin AE, Liu J, Shao Y. ERK-mediated phosphorylation regulates SOX10 sumoylation and targets expression in mutant BRAF melanoma. Nat Commun 2018; 9:28. [PMID: 29295999 PMCID: PMC5750221 DOI: 10.1038/s41467-017-02354-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 11/23/2017] [Indexed: 12/14/2022] Open
Abstract
In human mutant BRAF melanoma cells, the stemness transcription factor FOXD3 is rapidly induced by inhibition of ERK1/2 signaling and mediates adaptive resistance to RAF inhibitors. However, the mechanism underlying ERK signaling control of FOXD3 expression remains unknown. Here we show that SOX10 is both necessary and sufficient for RAF inhibitor-induced expression of FOXD3 in mutant BRAF melanoma cells. SOX10 activates the transcription of FOXD3 by binding to a regulatory element in FOXD3 promoter. Phosphorylation of SOX10 by ERK inhibits its transcription activity toward multiple target genes by interfering with the sumoylation of SOX10 at K55, which is essential for its transcription activity. Finally, depletion of SOX10 sensitizes mutant BRAF melanoma cells to RAF inhibitors in vitro and in vivo. Thus, our work discovers a novel phosphorylation-dependent regulatory mechanism of SOX10 transcription activity and completes an ERK1/2/SOX10/FOXD3/ERBB3 axis that mediates adaptive resistance to RAF inhibitors in mutant BRAF melanoma cells.
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Affiliation(s)
- Shujun Han
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yibo Ren
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Wangxiao He
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Huadong Liu
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Zhe Zhi
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xinliang Zhu
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Tielin Yang
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yu Rong
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Bohan Ma
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Timothy J Purwin
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Zhenlin Ouyang
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Caixia Li
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xun Wang
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xueqiang Wang
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Huizi Yang
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yan Zheng
- Department of Dermatology, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, 710004, China
| | - Andrew E Aplin
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, 19107, USA
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Jiankang Liu
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
- National & Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710004, China.
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China.
| | - Yongping Shao
- Frontier Institute of Science and Technology, and Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
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15
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Cohen-Solal KA, Kaufman HL, Lasfar A. Transcription factors as critical players in melanoma invasiveness, drug resistance, and opportunities for therapeutic drug development. Pigment Cell Melanoma Res 2017; 31:241-252. [DOI: 10.1111/pcmr.12666] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 10/19/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Karine A. Cohen-Solal
- Rutgers Cancer Institute of New Jersey; New Brunswick NJ USA
- Section of Surgical Oncology Research; Department of Surgery; Rutgers Robert Wood Johnson Medical School; Rutgers, The State University of New Jersey; New Brunswick NJ USA
| | - Howard L. Kaufman
- Department of Surgery; Rutgers University; New Brunswick NJ USA
- Department of Medicine; Rutgers University; New Brunswick NJ USA
| | - Ahmed Lasfar
- Rutgers Cancer Institute of New Jersey; New Brunswick NJ USA
- Department of Pharmacology and Toxicology; Ernest Mario School of Pharmacy; Rutgers, The State University of New Jersey; Piscataway NJ USA
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16
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Ryu S, Youn C, Moon AR, Howland A, Armstrong CA, Song PI. Therapeutic Inhibitors against Mutated BRAF and MEK for the Treatment of Metastatic Melanoma. Chonnam Med J 2017; 53:173-177. [PMID: 29026704 PMCID: PMC5636755 DOI: 10.4068/cmj.2017.53.3.173] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/09/2017] [Accepted: 08/14/2017] [Indexed: 12/26/2022] Open
Abstract
Melanoma is one of the most aggressive cancers in the world and is responsible for the majority of skin cancer deaths. Recent advances in the field of immunotherapy using active, adoptive, and antigen-specific therapeutic approaches, have generated the expectation that these technologies have the potential to improve the treatment of advanced malignancies, including melanoma. Treatment options for metastatic melanoma patients have been dramatically improved by the FDA approval of new therapeutic agents including vemurafenib, dabrafenib, and sorafenib. These kinase inhibitors have the potential to work in tandem with MEK, PI3K/AKT, and mTOR to inhibit the activity of melanoma inducing BRAF mutations. This review summarizes the effects of the new therapeutic agents against melanoma and the underlying biology of these BRAF inhibitors.
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Affiliation(s)
- Sunhyo Ryu
- Department of Dermatology, University of Colorado Denver Medical School, Aurora, Colorado, USA
| | - Chakyung Youn
- Department of Premedical Sciences, Chosun University School of Medicine, Gwangju, Korea
| | - Ae Ran Moon
- Department of Premedical Sciences, Chosun University School of Medicine, Gwangju, Korea
| | - Amanda Howland
- Department of Dermatology, University of Colorado Denver Medical School, Aurora, Colorado, USA
| | - Cheryl A Armstrong
- Department of Dermatology, University of Colorado Denver Medical School, Aurora, Colorado, USA
| | - Peter I Song
- Department of Dermatology, University of Colorado Denver Medical School, Aurora, Colorado, USA
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17
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Wang J, Li W, Zhao Y, Kang D, Fu W, Zheng X, Pang X, Du G. Members of FOX family could be drug targets of cancers. Pharmacol Ther 2017; 181:183-196. [PMID: 28830838 DOI: 10.1016/j.pharmthera.2017.08.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
FOX families play important roles in biological processes, including metabolism, development, differentiation, proliferation, apoptosis, migration, invasion and longevity. Here we are focusing on roles of FOX members in cancers, FOX members and drug resistance, FOX members and stem cells. Finally, FOX members as drug targets of cancer treatment were discussed. Future perspectives of FOXC1 research were described in the end.
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Affiliation(s)
- Jinhua Wang
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China; Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Wan Li
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Ying Zhao
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - De Kang
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Weiqi Fu
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Xiangjin Zheng
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Xiaocong Pang
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Guanhua Du
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China; Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China.
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18
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Catalanotti F, Cheng DT, Shoushtari AN, Johnson DB, Panageas KS, Momtaz P, Higham C, Won HH, Harding JJ, Merghoub T, Rosen N, Sosman JA, Berger MF, Chapman PB, Solit DB. PTEN Loss-of-Function Alterations Are Associated With Intrinsic Resistance to BRAF Inhibitors in Metastatic Melanoma. JCO Precis Oncol 2017; 1:1600054. [PMID: 32913971 DOI: 10.1200/po.16.00054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Purpose The clinical use of BRAF inhibitors in patients with melanoma is limited by intrinsic and acquired resistance. We asked whether next-generation sequencing of pretreatment tumors could identify coaltered genes that predict for intrinsic resistance to BRAF inhibitor therapy in patients with melanoma as a prelude to rational combination strategies. Patients and Methods We analyzed 66 tumors from patients with metastatic BRAF-mutant melanoma collected before treatment with BRAF inhibitors. Tumors were analyzed for > 250 cancer-associated genes using a capture-based next-generation sequencing platform. Antitumor responses were correlated with clinical features and genomic profiles with the goal of identifying a molecular signature predictive of intrinsic resistance to RAF pathway inhibition. Results Among the 66 patients analyzed, 11 received a combination of BRAF and MEK inhibitors for the treatment of melanoma. Among the 55 patients treated with BRAF inhibitor monotherapy, objective responses, as assessed by Response Evaluation Criteria in Solid Tumors (RECIST), were observed in 30 patients (55%), with five (9%) achieving a complete response. We identified a significant association between alterations in PTEN that would be predicted to result in loss of function and reduced progression-free survival, overall survival, and response grade, a metric that combines tumor regression and duration of treatment response. Patients with melanoma who achieved an excellent response grade were more likely to have an elevated BRAF-mutant allele fraction. Conclusion These results provide a rationale for cotargeting BRAF and the PI3K/AKT pathway in patients with BRAF-mutant melanoma when tumors have concurrent loss-of-function mutations in PTEN. Future studies should explore whether gain of the mutant BRAF allele and/or loss of the wild-type allele is a predictive marker of BRAFi sensitivity.
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Affiliation(s)
- Federica Catalanotti
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Donavan T Cheng
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Alexander N Shoushtari
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Douglas B Johnson
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Katherine S Panageas
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Parisa Momtaz
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Catherine Higham
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Helen H Won
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - James J Harding
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Taha Merghoub
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Neal Rosen
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Jeffrey A Sosman
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Michael F Berger
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - Paul B Chapman
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
| | - David B Solit
- , , , , , , , , , , , and , Memorial Sloan Kettering Cancer Center, New York, NY; , , and , Vanderbilt University Medical Center; and and , Vanderbilt-Ingram Cancer Center, Nashville, TN
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19
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Amaral T, Sinnberg T, Meier F, Krepler C, Levesque M, Niessner H, Garbe C. MAPK pathway in melanoma part II—secondary and adaptive resistance mechanisms to BRAF inhibition. Eur J Cancer 2017; 73:93-101. [DOI: 10.1016/j.ejca.2016.12.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/05/2016] [Indexed: 12/16/2022]
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20
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Zhang T, Suryawanshi YR, Kordish DH, Woyczesczyk HM, Jeng D, Essani K. Tanapoxvirus lacking a neuregulin-like gene regresses human melanoma tumors in nude mice. Virus Genes 2017; 53:52-62. [PMID: 27738905 PMCID: PMC5300959 DOI: 10.1007/s11262-016-1402-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 10/06/2016] [Indexed: 10/25/2022]
Abstract
Neuregulin (NRG), an epidermal growth factor is known to promote the growth of various cell types, including human melanoma cells through ErbB family of tyrosine kinases receptors. Tanapoxvirus (TPV)-encoded protein TPV-15L, a functional mimic of NRG, also acts through ErbB receptors. Here, we show that the TPV-15L protein promotes melanoma proliferation. TPV recombinant generated by deleting the 15L gene (TPVΔ15L) showed replication ability similar to that of wild-type TPV (wtTPV) in owl monkey kidney cells, human lung fibroblast (WI-38) cells, and human melanoma (SK-MEL-3) cells. However, a TPV recombinant with both 15L and the thymidine kinase (TK) gene 66R ablated (TPVΔ15LΔ66R) replicated less efficiently compared to TPVΔ15L and the parental virus. TPVΔ15L exhibited more robust tumor regression in the melanoma-bearing nude mice compared to other TPV recombinants. Our results indicate that deletion of TPV-15L gene product which facilitates the growth of human melanoma cells can be an effective strategy to enhance the oncolytic potential of TPV for the treatment of melanoma.
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Affiliation(s)
- Tiantian Zhang
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Yogesh R Suryawanshi
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Dennis H Kordish
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Helene M Woyczesczyk
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - David Jeng
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Karim Essani
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, USA.
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21
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Krishnakumar R, Chen AF, Pantovich MG, Danial M, Parchem RJ, Labosky PA, Blelloch R. FOXD3 Regulates Pluripotent Stem Cell Potential by Simultaneously Initiating and Repressing Enhancer Activity. Cell Stem Cell 2016; 18:104-17. [PMID: 26748757 DOI: 10.1016/j.stem.2015.10.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/22/2015] [Accepted: 10/10/2015] [Indexed: 12/18/2022]
Abstract
Early development is governed by the ability of pluripotent cells to retain the full range of developmental potential and respond accurately to developmental cues. This property is achieved in large part by the temporal and contextual regulation of gene expression by enhancers. Here, we evaluated regulation of enhancer activity during differentiation of embryonic stem to epiblast cells and uncovered the forkhead transcription factor FOXD3 as a major regulator of the developmental potential of both pluripotent states. FOXD3 bound to distinct sites in the two cell types priming enhancers through a dual-functional mechanism. It recruited the SWI/SNF chromatin remodeling complex ATPase BRG1 to promote nucleosome removal while concurrently inhibiting maximal activation of the same enhancers by recruiting histone deacetylases1/2. Thus, FOXD3 prepares cognate genes for future maximal expression by establishing and simultaneously repressing enhancer activity. Through switching of target sites, FOXD3 modulates the developmental potential of pluripotent cells as they differentiate.
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Affiliation(s)
- Raga Krishnakumar
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Amy F Chen
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Marisol G Pantovich
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Muhammad Danial
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ronald J Parchem
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Patricia A Labosky
- Office of Strategic Coordination, Division of Program Coordination, Planning, and Strategic Initiatives, and Office of Director, National Institute of Health, Bethesda, MD 20892, USA
| | - Robert Blelloch
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA.
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22
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JUN dependency in distinct early and late BRAF inhibition adaptation states of melanoma. Cell Discov 2016; 2:16028. [PMID: 27648299 PMCID: PMC5012007 DOI: 10.1038/celldisc.2016.28] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 06/26/2016] [Indexed: 12/26/2022] Open
Abstract
A prominent mechanism of acquired resistance to BRAF inhibitors in BRAF (V600) -mutant melanoma is associated with the upregulation of receptor tyrosine kinases. Evidences suggested that this resistance mechanism is part of a more complex cellular adaptation process. Using an integrative strategy, we found this mechanism to invoke extensive transcriptomic, (phospho-) proteomic and phenotypic alterations that accompany a cellular transition to a de-differentiated, mesenchymal and invasive state. Even short-term BRAF-inhibitor exposure leads to an early adaptive, differentiation state change-characterized by a slow-cycling, persistent state. The early persistent state is distinct from the late proliferative, resistant state. However, both differentiation states share common signaling alterations including JUN upregulation. Motivated by the similarities, we found that co-targeting of BRAF and JUN is synergistic in killing fully resistant cells; and when used up-front, co-targeting substantially impairs the formation of the persistent subpopulation. We confirmed that JUN upregulation is a common response to BRAF inhibitor treatment in clinically treated patient tumors. Our findings demonstrate that events shared between early- and late-adaptation states provide candidate up-front co-treatment targets.
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23
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Kemper K, Krijgsman O, Kong X, Cornelissen-Steijger P, Shahrabi A, Weeber F, van der Velden DL, Bleijerveld OB, Kuilman T, Kluin RJC, Sun C, Voest EE, Ju YS, Schumacher TNM, Altelaar AFM, McDermott U, Adams DJ, Blank CU, Haanen JB, Peeper DS. BRAF(V600E) Kinase Domain Duplication Identified in Therapy-Refractory Melanoma Patient-Derived Xenografts. Cell Rep 2016; 16:263-277. [PMID: 27320919 PMCID: PMC4929150 DOI: 10.1016/j.celrep.2016.05.064] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/08/2016] [Accepted: 05/16/2016] [Indexed: 12/31/2022] Open
Abstract
The therapeutic landscape of melanoma is improving rapidly. Targeted inhibitors show promising results, but drug resistance often limits durable clinical responses. There is a need for in vivo systems that allow for mechanistic drug resistance studies and (combinatorial) treatment optimization. Therefore, we established a large collection of patient-derived xenografts (PDXs), derived from BRAFV600E, NRASQ61, or BRAFWT/NRASWT melanoma metastases prior to treatment with BRAF inhibitor and after resistance had occurred. Taking advantage of PDXs as a limitless source, we screened tumor lysates for resistance mechanisms. We identified a BRAFV600E protein harboring a kinase domain duplication (BRAFV600E/DK) in ∼10% of the cases, both in PDXs and in an independent patient cohort. While BRAFV600E/DK depletion restored sensitivity to BRAF inhibition, a pan-RAF dimerization inhibitor effectively eliminated BRAFV600E/DK-expressing cells. These results illustrate the utility of this PDX platform and warrant clinical validation of BRAF dimerization inhibitors for this group of melanoma patients. Patient-derived xenograft (PDX) platform comprises 89 metastatic melanoma tumors Platform includes several pre-vemurafenib and vemurafenib-resistant PDXs Duplication of the BRAFV600E kinase domain is identified as a resistance mechanism Pan-RAF dimerization inhibitor LY3009120 eliminates melanoma cells with this duplication
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Affiliation(s)
- Kristel Kemper
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Oscar Krijgsman
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Xiangjun Kong
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Paulien Cornelissen-Steijger
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Aida Shahrabi
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Fleur Weeber
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Daphne L van der Velden
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Onno B Bleijerveld
- Mass Spectrometry/Proteomics Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Thomas Kuilman
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Roel J C Kluin
- Central Genomics Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Chong Sun
- Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Emile E Voest
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Young Seok Ju
- Cancer Genome Project, The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
| | - Ton N M Schumacher
- Division of Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - A F Maarten Altelaar
- Mass Spectrometry/Proteomics Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands; Biomolecular Mass Spectrometry and Proteomics, Bijvoet Centre for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Ultan McDermott
- Cancer Genome Project, The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
| | - David J Adams
- Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1HH, UK
| | - Christian U Blank
- Division of Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - John B Haanen
- Division of Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - Daniel S Peeper
- Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands.
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24
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Delmas A, Cherier J, Pohorecka M, Medale-Giamarchi C, Meyer N, Casanova A, Sordet O, Lamant L, Savina A, Pradines A, Favre G. The c-Jun/RHOB/AKT pathway confers resistance of BRAF-mutant melanoma cells to MAPK inhibitors. Oncotarget 2016; 6:15250-64. [PMID: 26098773 PMCID: PMC4558149 DOI: 10.18632/oncotarget.3888] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 04/25/2015] [Indexed: 11/25/2022] Open
Abstract
The response of BRAF-mutant melanoma patients to BRAF inhibitors is dramatically impaired by secondary resistances and rapid relapse. So far, the molecular mechanisms driving these resistances are not completely understood. Here, we show that, in BRAF-mutant melanoma cells, inhibition of BRAF or its target MEK induces RHOB expression by a mechanism that depends on the transcription factor c-Jun. In those cells, RHOB deficiency causes hypersensitivity to BRAF and MEK inhibitors-induced apoptosis. Supporting these results, loss of RHOB expression in metastatic melanoma tissues is associated with an increased progression-free survival of BRAF-mutant patients treated with vemurafenib. Following BRAF inhibition, RHOB activates AKT whose inhibition causes hypersensitivity of BRAF-mutant melanoma cells to BRAF inhibitors. In mice, AKT inhibition synergizes with vemurafenib to block tumor growth of BRAF-mutant metastatic melanoma. Our findings reveal that BRAF inhibition activates a c-Jun/RHOB/AKT pathway that promotes tumor cell survival and further support a role of this pathway in the resistance of melanoma to vemurafenib. Our data also highlight the importance of using RHOB tumor levels as a biomarker to predict vemurafenib patient's response and to select those that would benefit of the combination with AKT inhibitors.
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Affiliation(s)
- Audrey Delmas
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Julia Cherier
- Inserm, UMR 1037-CRCT, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Magdalena Pohorecka
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Claire Medale-Giamarchi
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Nicolas Meyer
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Centre Hospitalo-Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse-Oncopole, Department of Dermatology, Toulouse, France
| | - Anne Casanova
- Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Olivier Sordet
- Inserm, UMR 1037-CRCT, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Laurence Lamant
- Inserm, UMR 1037-CRCT, Toulouse, France.,Centre Hospitalo-Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse-Oncopole, Department of Pathology, Toulouse, France
| | - Ariel Savina
- Scientific Partnerships, Roche SAS, Boulogne Billancourt, France
| | - Anne Pradines
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
| | - Gilles Favre
- Inserm, UMR 1037-CRCT, Toulouse, France.,Université Paul Sabatier, Toulouse, France.,Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse-Oncopole, Laboratory of Medical Biology and Oncogenetics, Toulouse, France
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25
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Gallagher SJ, Tiffen JC, Hersey P. Histone Modifications, Modifiers and Readers in Melanoma Resistance to Targeted and Immune Therapy. Cancers (Basel) 2015; 7:1959-82. [PMID: 26426052 PMCID: PMC4695870 DOI: 10.3390/cancers7040870] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/17/2015] [Accepted: 09/18/2015] [Indexed: 02/06/2023] Open
Abstract
The treatment of melanoma has been revolutionized by new therapies targeting MAPK signaling or the immune system. Unfortunately these therapies are hindered by either primary resistance or the development of acquired resistance. Resistance mechanisms involving somatic mutations in genes associated with resistance have been identified in some cases of melanoma, however, the cause of resistance remains largely unexplained in other cases. The importance of epigenetic factors targeting histones and histone modifiers in driving the behavior of melanoma is only starting to be unraveled and provides significant opportunity to combat the problems of therapy resistance. There is also an increasing ability to target these epigenetic changes with new drugs that inhibit these modifications to either prevent or overcome resistance to both MAPK inhibitors and immunotherapy. This review focuses on changes in histones, histone reader proteins and histone positioning, which can mediate resistance to new therapeutics and that can be targeted for future therapies.
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Affiliation(s)
- Stuart J Gallagher
- Melanoma Immunology and Oncology Group, Centenary Institute, University of Sydney, Camperdown 2050, Australia.
- Melanoma Institute Australia, Crow's Nest 2065, Sydney, Australia.
| | - Jessamy C Tiffen
- Melanoma Immunology and Oncology Group, Centenary Institute, University of Sydney, Camperdown 2050, Australia.
- Melanoma Institute Australia, Crow's Nest 2065, Sydney, Australia.
| | - Peter Hersey
- Melanoma Immunology and Oncology Group, Centenary Institute, University of Sydney, Camperdown 2050, Australia.
- Melanoma Institute Australia, Crow's Nest 2065, Sydney, Australia.
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26
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Kubic JD, Little EC, Kaiser RS, Young KP, Lang D. FOXD3 Promotes PAX3 Expression in Melanoma Cells. J Cell Biochem 2015; 117:533-41. [PMID: 26252164 DOI: 10.1002/jcb.25306] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/04/2015] [Indexed: 01/01/2023]
Abstract
Several key transcription factors regulate cell growth, survival, and differentiation during neural crest and melanoblast development in the embryo, and these same pathways may be reactivated in tumors arising from the progenitors of these cells. The transcription factors PAX3 and FOXD3 have essential roles in melanoblasts and melanoma. In this study, we define a regulatory pathway where FOXD3 promotes the expression of PAX3. Both factors are expressed in melanoma cells and there is a positive correlation between the transcript levels of PAX3 and FOXD3. The PAX3 gene contains two FOX binding motifs within highly conserved enhancer regulatory elements that are essential for neural crest development. FOXD3 binds to both of these motifs in vitro but only one of these sites is preferentially utilized in melanoma cells. Overexpression of FOXD3 upregulates PAX3 levels while inhibition of FOXD3 function does not alter PAX3 protein levels, supporting that FOXD3 is sufficient but not necessary to drive PAX3 expression in melanoma cells. Here, we identify a molecular pathway where FOXD3 upregulates PAX3 expression and therefore contributes to melanoma progression.
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Affiliation(s)
- Jennifer D Kubic
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, Illinois, 60637
| | - Elizabeth C Little
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, Illinois, 60637
| | - Rebecca S Kaiser
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, Illinois, 60637
| | - Kacey P Young
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, Illinois, 60637
| | - Deborah Lang
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, Illinois, 60637
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27
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Overcoming resistance to BRAF inhibition in BRAF-mutated metastatic melanoma. Oncotarget 2015; 5:10206-21. [PMID: 25344914 PMCID: PMC4279367 DOI: 10.18632/oncotarget.2602] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 10/18/2014] [Indexed: 12/29/2022] Open
Abstract
Almost 50% of metastatic melanoma patients harbor a BRAF(V600) mutation and the introduction of BRAF inhibitors has improved their treatment options. BRAF inhibitors vemurafenib and dabrafenib achieved improved overall survival over chemotherapy and have been approved for the treatment of BRAF-mutated metastatic melanoma. However, most patients develop mechanisms of acquired resistance and about 15% of them do not achieve tumor regression at all, due to intrinsic resistance to therapy. Moreover, early adaptive responses limit the initial efficacy of BRAF inhibition, leading mostly to incomplete responses that may favor the selection of a sub-population of resistant clones and the acquisition of alterations that cause tumor regrowth and progressive disease. The purpose of this paper is to review the mechanisms of resistance to therapy with BRAF inhibitors and to discuss the strategies to overcome them based on pre-clinical and clinical evidences.
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28
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Kubic JD, Lui JW, Little EC, Ludvik AE, Konda S, Salgia R, Aplin AE, Lang D. PAX3 and FOXD3 Promote CXCR4 Expression in Melanoma. J Biol Chem 2015. [PMID: 26205821 DOI: 10.1074/jbc.m115.670976] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Metastatic melanoma is an aggressive and deadly disease. The chemokine receptor CXCR4 is active in melanoma metastasis, although the mechanism for the promotion and maintenance of CXCR4 expression in these cells is mostly unknown. Here, we find melanoma cells express two CXCR4 isoforms, the common version and a variant that is normally restricted to cells during development or to mature blood cells. CXCR4 expression is driven through a highly conserved intronic enhancer element by the transcription factors PAX3 and FOXD3. Inhibition of these transcription factors slows melanoma cell growth, migration, and motility, as well as reduces CXCR4 expression. Overexpression of these transcription factors drives the production of increased CXCR4 levels. Loss of PAX3 and FOXD3 transcription factor activity results in a reduction in cell motility, migration, and chemotaxis, all of which are rescued by CXCR4 overexpression. Here, we discover a molecular pathway wherein PAX3 and FOXD3 promote CXCR4 gene expression in melanoma.
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Affiliation(s)
| | - Jason W Lui
- From the Department of Medicine, Section of Dermatology and
| | | | - Anton E Ludvik
- From the Department of Medicine, Section of Dermatology and
| | - Sasank Konda
- From the Department of Medicine, Section of Dermatology and
| | - Ravi Salgia
- Section of Hematology/Oncology, University of Chicago, Chicago, Illinois 60637 and
| | - Andrew E Aplin
- the Department of Cancer Biology and Kimmel Cancer Center, and Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Deborah Lang
- From the Department of Medicine, Section of Dermatology and
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29
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Wellbrock C, Arozarena I. Microphthalmia-associated transcription factor in melanoma development and MAP-kinase pathway targeted therapy. Pigment Cell Melanoma Res 2015; 28:390-406. [PMID: 25818589 PMCID: PMC4692100 DOI: 10.1111/pcmr.12370] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/16/2015] [Indexed: 12/12/2022]
Abstract
Malignant melanoma is a neoplasm of melanocytes, and the microphthalmia-associated transcription factor (MITF) is essential for the existence of melanocytes. MITF's relevance for this cell lineage is maintained in melanoma, where it is an important regulator of survival and balances melanoma cell proliferation with terminal differentiation (pigmentation). The MITF gene is amplified in ~20% of melanomas and MITF mutation can predispose to melanoma development. Furthermore, the regulation of MITF expression and function is strongly linked to the BRAF/MEK/ERK/MAP-kinase (MAPK) pathway, which is deregulated in >90% of melanomas and central target of current therapies. MITF expression in melanoma is heterogeneous, and recent findings highlight the relevance of this heterogeneity for the response of melanoma to MAPK pathway targeting drugs, as well as for MITF's role in melanoma progression. This review aims to provide an updated overview on the regulation of MITF function and plasticity in melanoma with a focus on its link to MAPK signaling.
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Affiliation(s)
- Claudia Wellbrock
- Manchester Cancer Research CentreWellcome Trust Centre for Cell Matrix ResearchFaculty of Life SciencesThe University of ManchesterManchesterUK
| | - Imanol Arozarena
- Manchester Cancer Research CentreWellcome Trust Centre for Cell Matrix ResearchFaculty of Life SciencesThe University of ManchesterManchesterUK
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30
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Abstract
Adolescent and young adult (AYA) patients with cancer are a unique category of patients who, depending on age at time of diagnosis, might receive treatment from oncologists specializing either in the treatment of children or adults. In the USA, AYA oncology generally encompasses patients 15-39 years of age. AYA patients with cancer typically present with diseases that span the spectrum from 'paediatric' cancers (such as acute lymphoblastic leukaemia [ALL] and brain tumours) to 'adult' tumours (such as breast cancer and melanoma), as well as cancers that are largely unique to their age group (such as testicular cancer and bone tumours). Research indicates that outcomes of AYA patients with cancer are influenced not only by the treatment provided, but also by factors related to 'host' biology. In addition to the potential biological and cancer-specific differences between AYAs and other patients with cancer, AYA patients also often have disparate access to clinical trials and suffer from a lack of age-appropriate psychosocial support services and health services, which might influence survival as well as overall quality of life. In this Review, these issues are discussed, with a focus on two types of AYA cancer--ALL and melanoma--highlighting findings arising from the use of emerging technologies, such as whole-genome sequencing.
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31
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Smit MA, Maddalo G, Greig K, Raaijmakers LM, Possik PA, van Breukelen B, Cappadona S, Heck AJR, Altelaar AFM, Peeper DS. ROCK1 is a potential combinatorial drug target for BRAF mutant melanoma. Mol Syst Biol 2014; 10:772. [PMID: 25538140 PMCID: PMC4300494 DOI: 10.15252/msb.20145450] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Treatment of BRAF mutant melanomas with specific BRAF inhibitors leads to tumor remission. However, most patients eventually relapse due to drug resistance. Therefore, we designed an integrated strategy using (phospho)proteomic and functional genomic platforms to identify drug targets whose inhibition sensitizes melanoma cells to BRAF inhibition. We found many proteins to be induced upon PLX4720 (BRAF inhibitor) treatment that are known to be involved in BRAF inhibitor resistance, including FOXD3 and ErbB3. Several proteins were down-regulated, including Rnd3, a negative regulator of ROCK1 kinase. For our genomic approach, we performed two parallel shRNA screens using a kinome library to identify genes whose inhibition sensitizes to BRAF or ERK inhibitor treatment. By integrating our functional genomic and (phospho)proteomic data, we identified ROCK1 as a potential drug target for BRAF mutant melanoma. ROCK1 silencing increased melanoma cell elimination when combined with BRAF or ERK inhibitor treatment. Translating this to a preclinical setting, a ROCK inhibitor showed augmented melanoma cell death upon BRAF or ERK inhibition in vitro. These data merit exploration of ROCK1 as a target in combination with current BRAF mutant melanoma therapies.
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Affiliation(s)
- Marjon A Smit
- Division of Molecular Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Gianluca Maddalo
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands Center for Biomembrane Research, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Kylie Greig
- Division of Molecular Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Linsey M Raaijmakers
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Patricia A Possik
- Division of Molecular Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Bas van Breukelen
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Salvatore Cappadona
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Albert J R Heck
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - A F Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Daniel S Peeper
- Division of Molecular Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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32
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Sun C, Bernards R. Feedback and redundancy in receptor tyrosine kinase signaling: relevance to cancer therapies. Trends Biochem Sci 2014; 39:465-74. [PMID: 25239057 DOI: 10.1016/j.tibs.2014.08.010] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/26/2014] [Accepted: 08/26/2014] [Indexed: 12/19/2022]
Abstract
Mammalian cells have multiple regulatory mechanisms to deal with perturbations in cellular homeostasis, including feedback loops and crosstalk between the major signaling pathways. While these mechanisms are critically required to help cells survive under dynamic physiological circumstances, they also pose an impediment to the effective treatment of cancer. In this review, we describe what has been learned about interactions between receptor tyrosine kinase-dependent signaling pathways, and how this knowledge can be used to design rational and more effective combination therapies for cancer.
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Affiliation(s)
- Chong Sun
- Division of Molecular Carcinogenesis and Cancer Genomics Netherlands, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - René Bernards
- Division of Molecular Carcinogenesis and Cancer Genomics Netherlands, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
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33
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Rebecca VW, Smalley KSM. Change or die: targeting adaptive signaling to kinase inhibition in cancer cells. Biochem Pharmacol 2014; 91:417-25. [PMID: 25107706 DOI: 10.1016/j.bcp.2014.07.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 07/29/2014] [Accepted: 07/29/2014] [Indexed: 12/11/2022]
Abstract
Small molecule kinase inhibitors have proven enormously successful at delivering impressive responses in patients with cancers as diverse as chronic myeloid-leukemia, melanoma, breast cancer and small cell lung cancer. Despite this, resistance is commonplace and most patients ultimately fail therapy. One emerging observation is the rapid rewiring of signaling that occurs across multiple cancer types when driver oncogene function is inhibited. These adaptive signaling changes seem critical in delivering some of the earliest survival signals that allow small numbers of cells to evade therapy. In this commentary we review the mechanisms that contribute to the robustness of signaling networks within cancer cells and suggest new therapeutic strategies to limit treatment failure.
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Affiliation(s)
- Vito W Rebecca
- The Department of Molecular Oncology, The Moffitt Cancer Center & Research Institute, 12902 Magnolia Drive, Tampa, FL 33612, United States
| | - Keiran S M Smalley
- The Department of Molecular Oncology, The Moffitt Cancer Center & Research Institute, 12902 Magnolia Drive, Tampa, FL 33612, United States; Department of Cutaneous Oncology, The Moffitt Cancer Center & Research Institute, 12902 Magnolia Drive, Tampa, FL 33612, United States.
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34
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[Mechanisms of resistance to anti-BRAF treatments]. Ann Dermatol Venereol 2014; 141:671-81. [PMID: 25442471 DOI: 10.1016/j.annder.2014.06.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 04/30/2014] [Accepted: 06/19/2014] [Indexed: 12/19/2022]
Abstract
CONTEXT In patients with melanoma positive for the BRAF V600 mutation, clinical response to specific BRAF inhibitors is usually rapid and striking, with significant benefits in terms of progression-free survival and overall survival. However, resistance to treatment almost invariably arises, typically within a median timeframe of 6 months. Indeed, very few patients exhibit long-lasting response to these targeted therapies. AIMS It is essential to better understand the mechanisms of resistance to targeted anti-BRAF therapies in order to increase both response rates and the duration of clinical response to treatment. This literature review describes the signaling pathways involving BRAF and presents recent data from clinical trials with these molecules. Furthermore, we aim to describe the main resistance mechanisms linked with targeted anti-BRAF therapies. METHODS The keywords (resistance, BRAF, melanoma, targeted therapy, vemurafenib, and dabrafenib) were used to extract relevant articles in the Medline/Pubmed database published before 31 January 2014. DISCUSSION Improved knowledge and understanding of the mechanisms of resistance to targeted anti-BRAF therapies should enable the development of new therapeutic strategies in order to overcome such resistance and allow more significant and sustained response rates to be achieved among melanoma patients.
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35
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Abstract
Recent clinical data with BRAF and MEK1/2 [MAPK (mitogen-activated protein kinase)/ERK (extracellular-signal-regulated kinase) kinase 1/2] inhibitors have demonstrated the remarkable potential of targeting the RAF-MEK1/2-ERK1/2 signalling cascade for the treatment of certain cancers. Despite these advances, however, only a subset of patients respond to these agents in the first instance, and, of those that do, acquired resistance invariably develops after several months. Studies in vitro have identified various mechanisms that can underpin intrinsic and acquired resistance to MEK1/2 inhibitors, and these frequently recapitulate those observed clinically. In the present article, we review these mechanisms and also discuss recent advances in our understanding of how MEK1/2 inhibitor activity is influenced by pathway feedback.
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Affiliation(s)
- Matthew J Sale
- *Signalling Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Simon J Cook
- *Signalling Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, U.K
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36
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Weiss MB, Abel EV, Dadpey N, Aplin AE. FOXD3 modulates migration through direct transcriptional repression of TWIST1 in melanoma. Mol Cancer Res 2014; 12:1314-23. [PMID: 25061102 DOI: 10.1158/1541-7786.mcr-14-0170] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
UNLABELLED The neural crest is a multipotent, highly migratory cell population that gives rise to diverse cell types, including melanocytes. Factors regulating the development of the neural crest and emigration of its cells are likely to influence melanoma metastasis. The transcription factor FOXD3 plays an essential role in premigratory neural crest development and has been implicated in melanoma cell dormancy and response to therapeutics. FOXD3 is downregulated during the migration of the melanocyte lineage from the neural crest, and our previous work supports a role for FOXD3 in suppressing melanoma cell migration and invasion. Alternatively, TWIST1 is known to have promigratory and proinvasive roles in a number of cancers, including melanoma. Using ChIP-seq analysis, TWIST1 was identified as a potential transcriptional target of FOXD3. Mechanistically, FOXD3 directly binds to regions of the TWIST1 gene locus, leading to transcriptional repression of TWIST1 in human mutant BRAF melanoma cells. In addition, depletion of endogenous FOXD3 promotes upregulation of TWIST1 transcripts and protein. Finally, FOXD3 expression leads to a significant decrease in cell migration that can be efficiently reversed by the overexpression of TWIST1. These findings uncover the novel interplay between FOXD3 and TWIST1, which is likely to be important in the melanoma metastatic cascade. IMPLICATIONS FOXD3 and TWIST1 define distinct subgroups of cells within a heterogeneous tumor.
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Affiliation(s)
- Michele B Weiss
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Ethan V Abel
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania. Jefferson College of Graduate Studies, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Neda Dadpey
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Andrew E Aplin
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania. Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania.
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37
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Kugel CH, Aplin AE. Adaptive resistance to RAF inhibitors in melanoma. Pigment Cell Melanoma Res 2014; 27:1032-8. [PMID: 24828387 DOI: 10.1111/pcmr.12264] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/12/2014] [Indexed: 12/22/2022]
Abstract
The discovery of activating mutations in BRAF at high frequency in cutaneous melanoma opened the door to new treatment options, which have resulted in significantly better patient outcomes. Treatments such as the FDA-approved RAF inhibitor vemurafenib and the more recently approved dabrafenib and trametinib combination therapy are designed to target the ERK1/2 pathway. Initial success in targeting this pathway is evidenced by the high percentage of melanoma patients who undergo tumor remission. However, the beneficial effects of these targeted therapies are usually short-lived due to the development of resistance, which leads to disease progression. As a result, studies have focused on the acquired forms of resistance that develop following continued exposure to therapy. Conversely, far fewer studies have investigated the adaptive forms of resistance, which activate rapidly, promote cell survival, and may underlie the development of acquired resistance by providing melanoma cells the time to develop additional mutations. We provide a detailed review of the known mechanisms of adaptive resistance in melanoma and relate them to similar responses to targeted therapies in other tumor types.
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Affiliation(s)
- Curtis H Kugel
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA; Jefferson College of Graduate Studies, Thomas Jefferson University, Philadelphia, PA, USA
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38
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Shtivelman E, Davies MA, Hwu P, Yang J, Lotem M, Oren M, Flaherty KT, Fisher DE. Pathways and therapeutic targets in melanoma. Oncotarget 2014; 5:1701-52. [PMID: 24743024 PMCID: PMC4039128 DOI: 10.18632/oncotarget.1892] [Citation(s) in RCA: 164] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 04/07/2014] [Indexed: 02/07/2023] Open
Abstract
This review aims to summarize the current knowledge of molecular pathways and their clinical relevance in melanoma. Metastatic melanoma was a grim diagnosis, but in recent years tremendous advances have been made in treatments. Chemotherapy provided little benefit in these patients, but development of targeted and new immune approaches made radical changes in prognosis. This would not have happened without remarkable advances in understanding the biology of disease and tremendous progress in the genomic (and other "omics") scale analyses of tumors. The big problems facing the field are no longer focused exclusively on the development of new treatment modalities, though this is a very busy area of clinical research. The focus shifted now to understanding and overcoming resistance to targeted therapies, and understanding the underlying causes of the heterogeneous responses to immune therapy.
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Affiliation(s)
| | | | - Patrick Hwu
- University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - James Yang
- National Cancer Institute, NIH, Washington DC, USA
| | - Michal Lotem
- Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Moshe Oren
- The Weizmann Institute of Science, Rehovot, Israel
| | | | - David E. Fisher
- Massachusetts General Hospital Cancer Center, Boston, MA, USA
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39
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p70S6 kinase is a critical node that integrates HER-family and PI3 kinase signaling networks. Cell Signal 2014; 26:1627-35. [PMID: 24662264 DOI: 10.1016/j.cellsig.2014.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 03/10/2014] [Indexed: 12/17/2022]
Abstract
Therapies targeting oncogenic drivers rapidly induce compensatory adaptive responses that blunt drug effectiveness, contributing to therapeutic resistance. Adaptive responses are characteristic of robust cell signaling networks, and thus there is increasing interest in drug combinations that co-target the driver and the adaptive response. An alternative approach to co-inhibiting oncogenic and adaptive targets is to identify a critical node where the activities of these targets converge. Nodes of convergence between signaling modules represent potential therapeutic vulnerabilities because their inhibition could result in the collapse of the network, leading to enhanced cytotoxicity. In this report we demonstrate that p70S6 kinase (p70S6K) can function as a critical node linking HER-family and phosphoinositide-3-kinase (PI3K) pathway signaling. We used high-throughput combinatorial drug screening to identify adaptive survival responses to targeted therapies, and found that HER-family and PI3K represented compensatory signaling pathways. Co-targeting these pathways with drug combinations caused synergistic cytotoxicity in cases where inhibition of neither target was effective as a monotherapy. We utilized Reverse Phase Protein Arrays and determined that phosphorylation of ribosomal protein S6 was synergistically down-regulated upon HER-family and PI3K/mammalian target of rapamycin (mTOR) co-inhibition. Expression of constitutively active p70S6K protected against apoptosis induced by combined HER-family and PI3K/mTOR inhibition. Direct inhibition of p70S6K with small molecule inhibitors phenocopied HER-family and PI3K/mTOR co-inhibition. These data implicate p70S6K as a critical node in the HER-family/PI3K signaling network. The ability of direct inhibitors of p70S6K to phenocopy co-inhibition of two upstream signaling targets indicates that identification and targeting of critical nodes can overcome adaptive resistance to targeted therapies.
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40
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Narita Y, Okamoto K, Kawada MI, Takase K, Minoshima Y, Kodama K, Iwata M, Miyamoto N, Sawada K. Novel ATP-competitive MEK inhibitor E6201 is effective against vemurafenib-resistant melanoma harboring the MEK1-C121S mutation in a preclinical model. Mol Cancer Ther 2014; 13:823-32. [PMID: 24448821 DOI: 10.1158/1535-7163.mct-13-0667] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Many clinical cases of acquired resistance to the BRAF inhibitor vemurafenib have recently been reported. One of the causes of this acquired resistance is the BRAF downstream kinase point mutation MEK1-C121S. This mutation confers resistance to not only vemurafenib, but also to the allosteric MEK inhibitor selumetinib (AZD6244). Here, we investigated the pharmacologic activities and effectiveness of the novel MEK inhibitor E6201 against BRAF (v-raf murine sarcoma viral oncogene homolog B1)-V600E mutant melanoma harboring the MEK1-C121S mutation. A cell-free assay confirmed that E6201 is an ATP-competitive MEK inhibitor, meaning it has a different binding mode with MEK compared with allosteric MEK inhibitors. E6201 is more effective against BRAF-V600E mutant melanoma compared with BRAF wild-type melanoma based on MEK inhibition. We found that the acquired MEK1-C121S mutation in BRAF-V600E mutant melanoma conferred resistance to both vemurafenib and selumetinib but not E6201. The effectiveness of E6201 in this preclinical study is a result of its binding with MEK1 far from the C121S point mutation so the mutation is unable to influence the MAPK pathway inhibitory activity. These results support further clinical investigation of E6201.
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Affiliation(s)
- Yusuke Narita
- Authors' Affiliations: Eisai Co., Ltd.; and Genomics-Based Drug Discovery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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41
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Perier-Muzet M, Thomas L, Poulalhon N, Debarbieux S, Bringuier PP, Duru G, Depaepe L, Balme B, Dalle S. Melanoma patients under vemurafenib: prospective follow-up of melanocytic lesions by digital dermoscopy. J Invest Dermatol 2013; 134:1351-1358. [PMID: 24304815 DOI: 10.1038/jid.2013.462] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/12/2013] [Accepted: 09/24/2013] [Indexed: 12/22/2022]
Abstract
Second primary melanomas (SPMs) induced by vemurafenib have been recently described. The aim of this study was to define the dermoscopical signs of melanoma in this context. Patients underwent a total body examination before receiving vemurafenib. Each single melanocytic lesion was registered before therapy by digital dermoscopy (DD), and then repeated monthly until therapy disruption. Forty-two patients were included, the mean duration of follow-up was 6.7 months, and a mean number of 51 lesions per patients were captured and followed. A total number of 2,155 lesions were recorded, of which 56.1% presented at least one change during the study. More common changes concerned the color of the lesions (up to 15%) and appearance or disappearance of globules (14.6%). Thirty-six of the melanocytic lesions were surgically excised, 21 were classified as a nevus, 1 was a lentigo, and 14 as a second new primary melanoma (occurring in 21% of our patients). DD allowed us to excise only 36/2,155 (1.6%) of the lesions and permitted us to detect 14 SPM in the 42 patients with a highly efficient malignant/benign ratio of 63.6%. Although vemurafenib is now tested in an adjuvant setting DD should be systematically used in order to accurately detect SPM and reduce the number of unnecessary excisions.
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Affiliation(s)
- Marie Perier-Muzet
- Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France; Université Claude Bernard Lyon 1, Lyon, France
| | - Luc Thomas
- Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France; Université Claude Bernard Lyon 1, Lyon, France
| | - Nicolas Poulalhon
- Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France
| | - Sébastien Debarbieux
- Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France
| | - Pierre-Paul Bringuier
- Université Claude Bernard Lyon 1, Lyon, France; Cancer Research Center of Lyon, Lyon, France; Unit of Pathology, Centre Hospitalier Lyon-Sud, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Gerard Duru
- Université Claude Bernard Lyon 1, Lyon, France
| | - Lauriane Depaepe
- Unit of Pathology, Centre Hospitalier Lyon-Sud, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Brigitte Balme
- Unit of Pathology, Centre Hospitalier Lyon-Sud, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Stephane Dalle
- Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France; Université Claude Bernard Lyon 1, Lyon, France; Cancer Research Center of Lyon, Lyon, France.
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42
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Hu W, Jin L, Jiang CC, Long GV, Scolyer RA, Wu Q, Zhang XD, Mei Y, Wu M. AEBP1 upregulation confers acquired resistance to BRAF (V600E) inhibition in melanoma. Cell Death Dis 2013; 4:e914. [PMID: 24201813 PMCID: PMC3847319 DOI: 10.1038/cddis.2013.441] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/30/2013] [Accepted: 10/04/2013] [Indexed: 01/06/2023]
Abstract
An activating BRAF (V600E) kinase mutation occurs in approximately half of melanomas. Recent clinical studies have demonstrated that vemurafenib (PLX4032) and dabrafenib, potent and selective inhibitors of mutant v-raf murine sarcoma viral oncogene homolog B1 (BRAF), exhibit remarkable activities in patients with V600 BRAF mutant melanomas. However, acquired drug resistance invariably develops after the initial treatment. Identification of acquired resistance mechanisms may inform the development of new therapies that elicit long-term responses of melanomas to BRAF inhibitors. Here we report that increased expression of AEBP1 (adipocyte enhancer-binding protein 1) confers acquired resistance to BRAF inhibition in melanoma. AEBP1 is shown to be highly upregulated in PLX4032-resistant melanoma cells because of the hyperactivation of the PI3K/Akt-cAMP response element-binding protein (CREB) signaling pathway. This upregulates AEBP1 expression and thus leads to the activation of NF-κB via accelerating IκBa degradation. In addition, inhibition of the PI3K/Akt-CREB-AEBP1-NF-κB pathway greatly reverses the PLX4032-resistant phenotype of melanoma cells. Furthermore, increased expression of AEBP1 is validated in post-treatment tumors in patients with acquired resistance to BRAF inhibitor. Therefore, these results reveal a novel PI3K/Akt-CREB-AEBP1-NF-κB pathway whose activation contributes to acquired resistance to BRAF inhibition, and suggest that this pathway, particularly AEBP1, may represent a novel therapeutic target for treating BRAF inhibitor-resistant melanoma.
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Affiliation(s)
- W Hu
- 1] Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Anhui, China [2] Department of Immunology, Anhui Medical University, Anhui, China
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43
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Abstract
The incidence of malignant melanoma is increasing annually. Early stages can be cured with surgical intervention but metastatic disease has generally had a dismal prognosis with few effective interventions. A half of all melanomas possess a BRAF mutation, which can be targeted by specific inhibitors. Vemurafenib is an orally active, purposely designed mutant BRAF inhibitor, which has recently been shown to have a survival benefit measured in months in metastatic patients. In this article, the authors discuss the scientific rationale, drug development process and clinical trials that have led to vemurafenib becoming the first BRAF inhibitor approved for the treatment of patients with mutant BRAF metastatic melanoma.
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Affiliation(s)
- Heather M Shaw
- Mount Vernon Cancer Centre, Rickmansworth Road, Northwood, Middlesex, HA6 2RN, UK
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44
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Hartsough E, Shao Y, Aplin AE. Resistance to RAF inhibitors revisited. J Invest Dermatol 2013; 134:319-325. [PMID: 24108405 PMCID: PMC3947111 DOI: 10.1038/jid.2013.358] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 12/21/2022]
Abstract
In early 2011, we reviewed the initial success of the RAF inhibitor, vemurafenib, in mutant V600 BRAF melanoma patients. It was soon evident that the response to RAF inhibitor is heterogeneous and that the short-term benefits are burdened by the development of resistance. The field has progressed rapidly with the FDA-approval of vemurafenib and the development of other RAF and MEK inhibitors. Despite these advances, the issue of RAF inhibitor resistance remains. Here, we review recent clinical advances in the field, the growing number of resistance mechanisms, preclinical evidence for combinatorial trials using RAF inhibitors as the building blocks, and the new challenges that are arising.
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Affiliation(s)
- Edward Hartsough
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Yongping Shao
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Andrew E Aplin
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA; Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
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45
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Abstract
Since the discovery of activating mutations in the BRAF oncogene in melanoma, there has been remarkable progress in the development of targeted therapies for unresectable and metastatic melanoma. We review the latest developments in our understanding of the role of BRAF/MEK/ERK pathway signaling in melanoma, and the development of inhibitors of this pathway. We also explore alternative mutations seen in melanoma, such as NRAS, KIT, GNAQ, and GNA11, and the drug development that is ongoing based on this biology. Strategies for the management of the vexing clinical problem of BRAF inhibitor resistance, primarily via combination therapy, are outlined. With the recent approval of the BRAF inhibitor vemurafenib for stage IV metastatic melanoma, use of this agent is expanding in the United States. Thus, management of the skin toxicities of this agent, such as squamous cell carcinomas, "acneiform" eruptions, hand-foot syndrome, and panniculitis, will be a growing problem facing dermatologists today. We discuss the toxicities of targeted agents in use for melanoma, in particular the dermatologic effects and the management of these skin toxicities.
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Affiliation(s)
- Ragini R Kudchadkar
- Department of Cutaneous Oncology, Moffitt Cancer Center, 12902 Magnolia Drive, Tampa, FL 33612, USA
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46
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Le K, Blomain ES, Rodeck U, Aplin AE. Selective RAF inhibitor impairs ERK1/2 phosphorylation and growth in mutant NRAS, vemurafenib-resistant melanoma cells. Pigment Cell Melanoma Res 2013; 26:509-17. [PMID: 23490205 DOI: 10.1111/pcmr.12092] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 03/04/2013] [Indexed: 12/18/2022]
Abstract
The RAF inhibitor vemurafenib achieves remarkable clinical responses in mutant BRAF melanoma patients. However, vemurafenib is burdened by acquired drug resistance and by the side effects associated with its paradoxical activation of the ERK1/2 pathway in wild-type BRAF cells. This paradoxical effect has driven the development of a new class of RAF inhibitors. Here, we tested one of these selective, non-paradox-inducing RAF inhibitors termed paradox-breaker-04 (PB04) or PLX7904. Consistent with its design, PB04 is able to efficiently inhibit activation of ERK1/2 in mutant BRAF melanoma cells but does not hyperactivate ERK1/2 in mutant RAS-expressing cells. Importantly, PB04 inhibited ERK1/2 phosphorylation in mutant BRAF melanoma cells with acquired resistance to vemurafenib/PLX4720 that is mediated by a secondary mutation in NRAS. Consistent with ERK1/2 reactivation driving the re-acquisition of malignant properties, PB04 promoted apoptosis and inhibited entry into S phase and anchorage-independent growth in mutant N-RAS-mediated vemurafenib-resistant cells. These data indicate that paradox-breaker RAF inhibitors may be clinically effective as a second-line option in a cohort of acquired vemurafenib-resistant patients.
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Affiliation(s)
- Kaitlyn Le
- Department of Cancer Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
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47
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Abel EV, Basile KJ, Kugel CH, Witkiewicz AK, Le K, Amaravadi RK, Karakousis GC, Xu X, Xu W, Schuchter LM, Lee JB, Ertel A, Fortina P, Aplin AE. Melanoma adapts to RAF/MEK inhibitors through FOXD3-mediated upregulation of ERBB3. J Clin Invest 2013; 123:2155-68. [PMID: 23543055 DOI: 10.1172/jci65780] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 02/04/2013] [Indexed: 12/22/2022] Open
Abstract
The mechanisms underlying adaptive resistance of melanoma to targeted therapies remain unclear. By combining ChIP sequencing with microarray-based gene profiling, we determined that ERBB3 is upregulated by FOXD3, a transcription factor that promotes resistance to RAF inhibitors in melanoma. Enhanced ERBB3 signaling promoted resistance to RAF pathway inhibitors in cultured melanoma cell lines and in mouse xenograft models. ERBB3 signaling was dependent on ERBB2; targeting ERBB2 with lapatinib in combination with the RAF inhibitor PLX4720 reduced tumor burden and extended latency of tumor regrowth in vivo versus PLX4720 alone. These results suggest that enhanced ERBB3 signaling may serve as a mechanism of adaptive resistance to RAF and MEK inhibitors in melanoma and that cotargeting this pathway may enhance the clinical efficacy and extend the therapeutic duration of RAF inhibitors.
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Affiliation(s)
- Ethan V Abel
- Department of Cancer Biology and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
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48
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Nicholas S, Mathios D, Jackson C, Lim M. Metastatic Melanoma to the Brain: Surgery and Radiation Is Still the Standard of Care. Curr Treat Options Oncol 2013; 14:264-79. [DOI: 10.1007/s11864-013-0228-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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49
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Abstract
For science, theoretical or applied, to significantly advance, researchers must use the most appropriate mathematical methods. A century and a half elapsed between Newton's development of the calculus and Laplace's development of celestial mechanics. One cannot imagine the latter without the former. Today, more than three-quarters of a century has elapsed since the birth of stochastic systems theory. This article provides a perspective on the utilization of systems theory as the proper vehicle for the development of systems biology and its application to complex regulatory diseases such as cancer.
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Affiliation(s)
- Michael L. Bittner
- Computational Biology Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Edward R. Dougherty
- Computational Biology Division, Translational Genomics Research Institute, Phoenix, AZ, USA
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA
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50
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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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