1
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Odintsov I, Sholl LM. Prognostic and predictive biomarkers in non-small cell lung carcinoma. Pathology 2024; 56:192-204. [PMID: 38199926 DOI: 10.1016/j.pathol.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 01/12/2024]
Abstract
Lung cancer is the most common cause of cancer-related deaths globally, with the highest mortality rates among both men and women. Most lung cancers are diagnosed at late stages, necessitating systemic therapy. Modern clinical management of lung cancer relies heavily upon application of biomarkers, which guide the selection of systemic treatment. Here, we provide an overview of currently approved and emerging biomarkers of non-small cell lung cancer (NSCLC), including EGFR, ALK, ROS1, RET, NTRK1-3, KRAS, BRAF, MET, ERBB2/HER2, NRG1, PD-L1, TROP2, and CEACAM5. For practical purposes, we divide these biomarkers into genomic and protein markers, based on the tested substrate. We review the biology and epidemiology of the genomic and proteomic biomarkers, discuss optimal diagnostic assays for their detection, and highlight their contribution to the contemporary clinical management of NSCLC.
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Affiliation(s)
- Igor Odintsov
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Lynette M Sholl
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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2
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Trebino TE, Markusic B, Nan H, Banerjee S, Wang Z. Unveiling the domain-specific and RAS isoform-specific details of BRAF kinase regulation. eLife 2023; 12:RP88836. [PMID: 38150000 PMCID: PMC10752582 DOI: 10.7554/elife.88836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023] Open
Abstract
BRAF is a key member in the MAPK signaling pathway essential for cell growth, proliferation, and differentiation. Mutant BRAF is often the underlying cause of various types of cancer and mutant RAS, the upstream regulator of BRAF, is a driver of up to one-third of all cancers. BRAF interacts with RAS and undergoes a conformational change from an inactive, autoinhibited monomer to an active dimer, which propagates downstream signaling. Because of BRAF's complex regulation mechanism, the exact order and magnitude of its activation steps have yet to be confirmed experimentally. By studying the inter- and intramolecular interactions of BRAF, we unveil the domain-specific and isoform-specific details of BRAF regulation through pulldown assays, open surface plasmon resonance (OpenSPR), and hydrogen-deuterium exchange mass spectrometry (HDX-MS). We demonstrate that the BRAF specific region (BSR) and cysteine rich domain (CRD) play a crucial role in regulating the activation of BRAF in a RAS isoform-specific manner. Moreover, we quantified the binding affinities between BRAF N-terminal and kinase domains (KD) to reveal their individual roles in autoinhibition. Our findings also indicate that oncogenic BRAF-KDD594G mutant has a lower affinity for the N-terminal domains, implicating that pathogenic BRAF acts through decreased propensity for autoinhibition. Collectively, our study provides valuable insight into the activation mechanism of BRAF kinase to guide the development of new therapeutic strategies for cancer treatment.
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Affiliation(s)
| | - Borna Markusic
- Rowan UniversityGlassboroUnited States
- Max Planck Institute of BiophysicsFrankfurt am MainGermany
| | - Haihan Nan
- Rowan UniversityGlassboroUnited States
- School of Laboratory Medicine and Life Science, Wenzhou Medical UniversityWenzhouChina
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3
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Cui Y, Wu X, Jin J, Man W, Li J, Li X, Li Y, Yao H, Zhong R, Chen S, Wu J, Zhu T, Lin Y, Xu J, Wang Y. CircHERC1 promotes non-small cell lung cancer cell progression by sequestering FOXO1 in the cytoplasm and regulating the miR-142-3p-HMGB1 axis. Mol Cancer 2023; 22:179. [PMID: 37932766 PMCID: PMC10626661 DOI: 10.1186/s12943-023-01888-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/24/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Noncoding RNAs such as circular RNAs (circRNAs) are abundant in the human body and influence the occurrence and development of various diseases. Non-small cell lung cancer (NSCLC) is one of the most common malignant cancers. Information on the functions and mechanism of circRNAs in lung cancer is limited; thus, the topic needs more exploration. The purpose of this study was to identify aberrantly expressed circRNAs in lung cancer, unravel their roles in NSCLC progression, and provide new targets for lung cancer diagnosis and therapy. METHODS High-throughput sequencing was used to analyze differential circRNA expression in patients with lung cancer. qRT‒PCR was used to determine the level of circHERC1 in lung cancer tissues and plasma samples. Gain- and loss-of-function experiments were implemented to observe the impacts of circHERC1 on the growth, invasion, and metastasis of lung cancer cells in vitro and in vivo. Mechanistically, dual luciferase reporter assays, fluorescence in situ hybridization (FISH), RNA immunoprecipitation (RIP) and RNA pull-down experiments were performed to confirm the underlying mechanisms of circHERC1. Nucleocytoplasmic localization of FOXO1 was determined by nucleocytoplasmic isolation and immunofluorescence. The interaction of circHERC1 with FOXO1 was verified by RNA pull-down, RNA immunoprecipitation (RIP) and western blot assays. The proliferation and migration of circHERC1 in vivo were verified by subcutaneous and tail vein injection in nude mice. RESULTS CircHERC1 was significantly upregulated in lung cancer tissues and cells, ectopic expression of circHERC1 strikingly facilitated the proliferation, invasion and metastasis, and inhibited the apoptosis of lung cancer cells in vitro and in vivo. However, knockdown of circHERC1 exerted the opposite effects. CircHERC1 was mainly distributed in the cytoplasm. Further mechanistic research indicated that circHERC1 acted as a competing endogenous RNA of miR-142-3p to relieve the repressive effect of miR-142-3p on its target HMGB1, activating the MAPK/ERK and NF-κB pathways and promoting cell migration and invasion. More importantly, we found that circHERC1 could bind FOXO1 and sequester it in the cytoplasm, adjusting the feedback AKT pathway. The accumulation of FOXO1 in the cytosol and nuclear exclusion promoted cell proliferation and inhibited apoptosis. CircHERC1 is a new circRNA that promotes tumor function in NSCLC and may serve as a potential prognostic biomarker and therapeutic target for NSCLC. CONCLUSIONS CircHERC1 is a new circRNA that promotes tumor function in NSCLC and may serve as a potential diagnosis biomarker and therapeutic target for NSCLC. Our findings indicate that circHERC1 facilitates the invasion and metastasis of NSCLC cells by regulating the miR-142-3p/HMGB1 axis and activating the MAPK/ERK and NF-κB pathways. In addition, circHERC1 can promote cell proliferation and inhibit apoptosis by sequestering FOXO1 in the cytoplasm to regulate AKT activity and BIM transcription.
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Affiliation(s)
- Yumeng Cui
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Xiaojie Wu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jie Jin
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Weiling Man
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jie Li
- Department of Thoracic Surgery, The First Medical Center of Chinese PLA General Hospital, Beijing, 100850, China
| | - Xiang Li
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yanghua Li
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - He Yao
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Rongbin Zhong
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Shiyun Chen
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jiahui Wu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Tianhao Zhu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yanli Lin
- Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Junjie Xu
- Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Youliang Wang
- Beijing Institute of Biotechnology, Beijing, 100071, China.
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4
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Luo Y, Yamada M, N’Tumba-Byn T, Asif H, Gao M, Hu Y, Marangoni P, Liu Y, Evans T, Rafii S, Klein OD, Voss HU, Hadjantonakis AK, Elemento O, Martin LA, Seandel M. SPRY4-dependent ERK negative feedback demarcates functional adult stem cells in the male mouse germline†. Biol Reprod 2023; 109:533-551. [PMID: 37552049 PMCID: PMC10577279 DOI: 10.1093/biolre/ioad089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/28/2023] [Accepted: 08/05/2023] [Indexed: 08/09/2023] Open
Abstract
Niche-derived growth factors support self-renewal of mouse spermatogonial stem and progenitor cells through ERK MAPK signaling and other pathways. At the same time, dysregulated growth factor-dependent signaling has been associated with loss of stem cell activity and aberrant differentiation. We hypothesized that growth factor signaling through the ERK MAPK pathway in spermatogonial stem cells is tightly regulated within a narrow range through distinct intracellular negative feedback regulators. Evaluation of candidate extracellular signal-regulated kinase (ERK) mitogen-activated protein kinase (MAPK)-responsive genes known to dampen downstream signaling revealed robust induction of specific negative feedback regulators, including Spry4, in cultured mouse spermatogonial stem cells in response to glial cell line-derived neurotrophic factor or fibroblast growth factor 2. Undifferentiated spermatogonia in vivo exhibited high levels of Spry4 mRNA. Quantitative single-cell analysis of ERK MAPK signaling in spermatogonial stem cell cultures revealed both dynamic signaling patterns in response to growth factors and disruption of such effects when Spry4 was ablated, due to dysregulation of ERK MAPK downstream of RAS. Whereas negative feedback regulator expression decreased during differentiation, loss of Spry4 shifted cell fate toward early differentiation with concomitant loss of stem cell activity. Finally, a mouse Spry4 reporter line revealed that the adult spermatogonial stem cell population in vivo is demarcated by strong Spry4 promoter activity. Collectively, our data suggest that negative feedback-dependent regulation of ERK MAPK is critical for preservation of spermatogonial stem cell fate within the mammalian testis.
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Affiliation(s)
- Yanyun Luo
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Makiko Yamada
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | | | - Hana Asif
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Meng Gao
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Yang Hu
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Pauline Marangoni
- Program in Craniofacial Biology, Department of Orofacial Sciences, University of California, San Francisco, CA, USA
- Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA, USA
| | - Ying Liu
- Division of Regenerative Medicine, Department of Medicine, Hartman Institute for Therapeutic Organ Regeneration, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Todd Evans
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Shahin Rafii
- Division of Regenerative Medicine, Department of Medicine, Hartman Institute for Therapeutic Organ Regeneration, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Ophir D Klein
- Program in Craniofacial Biology, Department of Orofacial Sciences, University of California, San Francisco, CA, USA
- Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA, USA
| | - Henning U Voss
- College of Human Ecology, Cornell University, Ithaca, NY, USA
| | - Anna-Katerina Hadjantonakis
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Olivier Elemento
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
- Department of Physiology and Biophysics, Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Laura A Martin
- The New York Stem Cell Foundation Research Institute, New York, NY, USA
| | - Marco Seandel
- Department of Surgery, Weill Cornell Medicine, New York, NY, USA
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5
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Trebino T, Markusic B, Nan H, Banerjee S, Wang Z. Unveiling the Domain-Specific and RAS Isoform-Specific Details of BRAF Regulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.24.538112. [PMID: 37163002 PMCID: PMC10168249 DOI: 10.1101/2023.04.24.538112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
BRAF is a key member in the MAPK signaling pathway essential for cell growth, proliferation, and differentiation. Dysregulation or mutation of BRAF is often the underlying cause of various types of cancer. RAS, a small GTPase protein that acts upstream of BRAF, has been identified as a driver of up to one-third of all cancers. When BRAF interacts with RAS via the RAS binding domain (RBD) and membrane recruitment, BRAF undergoes a conformational change from an inactive, autoinhibited monomer to an active dimer and subsequently phosphorylates MEK to propagate the signal. Despite the central role of BRAF in cellular signaling, the exact order and magnitude of its activation steps has yet to be confirmed experimentally. By studying the inter- and intramolecular interactions of BRAF, we unveil the domain-specific and isoform-specific details of BRAF regulation. We employed pulldown assays, open surface plasmon resonance (OpenSPR), and hydrogen-deuterium exchange mass spectrometry (HDX-MS) to investigate the roles of the regulatory regions in BRAF activation and autoinhibition. Our results demonstrate that the BRAF specific region (BSR) and cysteine rich domain (CRD) play a crucial role in regulating the activity of BRAF. Moreover, we quantified the autoinhibitory binding affinities between the N-terminal domains and the kinase domain (KD) of BRAF and revealed the individual roles of the BRAF regulatory domains. Additionally, our findings provide evidence that the BSR negatively regulates BRAF activation in a RAS isoform-specific manner. Our findings also indicate that oncogenic BRAF-KDD594G mutant has a lower affinity for the regulatory domains, implicating that pathogenic BRAF acts through decreased propensity for autoinhibition. Collectively, our study provides valuable insights into the activation mechanism of BRAF kinase and may help to guide the development of new therapeutic strategies for cancer treatment.
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Affiliation(s)
- Tarah Trebino
- Rowan University, 201 Mullica Hill Rd, Glassboro, NJ 08028, USA
| | - Borna Markusic
- Rowan University, 201 Mullica Hill Rd, Glassboro, NJ 08028, USA
- Max Planck Institute of Biophysics, Max-von-Laue Straße 3, 60438 Frankfurt am Main, Germany
| | - Haihan Nan
- Rowan University, 201 Mullica Hill Rd, Glassboro, NJ 08028, USA
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Shrhea Banerjee
- Rowan University, 201 Mullica Hill Rd, Glassboro, NJ 08028, USA
| | - Zhihong Wang
- Rowan University, 201 Mullica Hill Rd, Glassboro, NJ 08028, USA
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6
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Lauinger M, Christen D, Klar RFU, Roubaty C, Heilig CE, Stumpe M, Knox JJ, Radulovich N, Tamblyn L, Xie IY, Horak P, Forschner A, Bitzer M, Wittel UA, Boerries M, Ball CR, Heining C, Glimm H, Fröhlich M, Hübschmann D, Gallinger S, Fritsch R, Fröhling S, O'Kane GM, Dengjel J, Brummer T. BRAF Δβ3-αC in-frame deletion mutants differ in their dimerization propensity, HSP90 dependence, and druggability. SCIENCE ADVANCES 2023; 9:eade7486. [PMID: 37656784 DOI: 10.1126/sciadv.ade7486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 08/02/2023] [Indexed: 09/03/2023]
Abstract
In-frame BRAF exon 12 deletions are increasingly identified in various tumor types. The resultant BRAFΔβ3-αC oncoproteins usually lack five amino acids in the β3-αC helix linker and sometimes contain de novo insertions. The dimerization status of BRAFΔβ3-αC oncoproteins, their precise pathomechanism, and their direct druggability by RAF inhibitors (RAFi) has been under debate. Here, we functionally characterize BRAFΔLNVTAP>F and two novel mutants, BRAFdelinsFS and BRAFΔLNVT>F, and compare them with other BRAFΔβ3-αC oncoproteins. We show that BRAFΔβ3-αC oncoproteins not only form stable homodimers and large multiprotein complexes but also require dimerization. Nevertheless, details matter as aromatic amino acids at the deletion junction of some BRAFΔβ3-αC oncoproteins, e.g., BRAFΔLNVTAP>F, increase their stability and dimerization propensity while conferring resistance to monomer-favoring RAFi such as dabrafenib or HSP 90/CDC37 inhibition. In contrast, dimer-favoring inhibitors such as naporafenib inhibit all BRAFΔβ3-αC mutants in cell lines and patient-derived organoids, suggesting that tumors driven by such oncoproteins are vulnerable to these compounds.
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Affiliation(s)
- Manuel Lauinger
- Institute of Molecular Medicine, ZBMZ, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Daniel Christen
- Institute of Molecular Medicine, ZBMZ, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Rhena F U Klar
- Institute of Molecular Medicine, ZBMZ, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Freeze-O Organoid Bank, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Internal Medicine I (Hematology, Oncology, and Stem Cell Transplantation), University Hospital of Freiburg, Freiburg, Germany
- Institute of Medical Bioinformatics and Systems Medicine (IBSM), Freiburg University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Carole Roubaty
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Christoph E Heilig
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Michael Stumpe
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Jennifer J Knox
- PanCuRx Translational Research Initiative, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Nikolina Radulovich
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Laura Tamblyn
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Irene Y Xie
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Peter Horak
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Andrea Forschner
- Department of Dermatology, University Hospital of Tübingen, Tübingen, Germany
- German Cancer Consortium (DKTK), DKFZ partner site Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Michael Bitzer
- German Cancer Consortium (DKTK), DKFZ partner site Tübingen, Eberhard Karls University, Tübingen, Germany
- Center for Personalized Medicine Tübingen, Eberhard Karls University, Tübingen, Germany
- Department of Internal Medicine I, Eberhard-Karls University, Tübingen, Germany
| | - Uwe A Wittel
- Department of General and Visceral Surgery, University of Freiburg Medical Center, Faculty of Medicine, 79106 Freiburg, Germany
| | - Melanie Boerries
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Institute of Medical Bioinformatics and Systems Medicine (IBSM), Freiburg University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Comprehensive Cancer Center Freiburg (CCCF), Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Claudia R Ball
- Department for Translational Medical Oncology, National Center for Tumor Diseases (NCT/UCC), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Translational Medical Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
- Technische Universität Dresden, Faculty of Biology, Technische Universität Dresden, Dresden, Germany
| | - Christoph Heining
- Department for Translational Medical Oncology, National Center for Tumor Diseases (NCT/UCC), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Translational Medical Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
| | - Hanno Glimm
- Department for Translational Medical Oncology, National Center for Tumor Diseases (NCT/UCC), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- Translational Medical Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
- Translational Functional Cancer Genomics, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martina Fröhlich
- Computational Oncology Group, Molecular Precision Oncology Program, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Daniel Hübschmann
- German Cancer Consortium (DKTK), Heidelberg, Germany
- Computational Oncology Group, Molecular Precision Oncology Program, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
- Pattern Recognition and Digital Medicine Group, Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany
| | - Steven Gallinger
- PanCuRx Translational Research Initiative, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Ralph Fritsch
- Department of Internal Medicine I (Hematology, Oncology, and Stem Cell Transplantation), University Hospital of Freiburg, Freiburg, Germany
- Department of Medical Oncology and Haematology, University Hospital of Zurich, Zurich, Switzerland
| | - Stefan Fröhling
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Grainne M O'Kane
- PanCuRx Translational Research Initiative, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Tilman Brummer
- Institute of Molecular Medicine, ZBMZ, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Freeze-O Organoid Bank, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Comprehensive Cancer Center Freiburg (CCCF), Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Center for Biological Signalling Studies BIOSS, University of Freiburg, 79104 Freiburg, Germany
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7
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Puri M, Gawri K, Dawar R. Therapeutic strategies for BRAF mutation in non-small cell lung cancer: a review. Front Oncol 2023; 13:1141876. [PMID: 37645429 PMCID: PMC10461310 DOI: 10.3389/fonc.2023.1141876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/24/2023] [Indexed: 08/31/2023] Open
Abstract
Lung cancer is the leading cause of cancer related deaths. Among the two broad types of lung cancer, non-small cell lung cancer accounts for 85% of the cases. The study of the genetic alteration has facilitated the development of targeted therapeutic interventions. Some of the molecular alterations which are important targets for drug therapy include Kirsten rat sarcoma (KRAS), Epidermal Growth Factor Receptor (EGFR), V-RAF murine sarcoma viral oncogene homolog B (BRAF), anaplastic lymphoma kinase gene (ALK). In the setting of extensive on-going clinical trials, it is imperative to periodically review the advancements and the newer drug therapies being available. Among all mutations, BRAF mutation is common with incidence being 8% overall and 1.5 - 4% in NSCLC. Here, we have summarized the BRAF mutation types and reviewed the various drug therapy available - for both V600 and nonV600 group; the mechanism of resistance to BRAF inhibitors and strategies to overcome it; the significance of comprehensive profiling of concurrent mutations, and the role of immune checkpoint inhibitor in BRAF mutated NSCLC. We have also included the currently ongoing clinical trials and recent advancements including combination therapy that would play a role in improving the overall survival and outcome of NSCLC.
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Affiliation(s)
- Megha Puri
- Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ, United States
| | - Kunal Gawri
- Department of Pulmonary, Critical Care and Sleep Medicine, University of Buffalo, Buffalo, NY, United States
| | - Richa Dawar
- Sylvester Comprehensive Cancer Center, University of Miami Health System, Miami, FL, United States
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8
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Dervovic D, Malik AA, Chen ELY, Narimatsu M, Adler N, Afiuni-Zadeh S, Krenbek D, Martinez S, Tsai R, Boucher J, Berman JM, Teng K, Ayyaz A, Lü Y, Mbamalu G, Loganathan SK, Lee J, Zhang L, Guidos C, Wrana J, Valipour A, Roux PP, Reimand J, Jackson HW, Schramek D. In vivo CRISPR screens reveal Serpinb9 and Adam2 as regulators of immune therapy response in lung cancer. Nat Commun 2023; 14:3150. [PMID: 37258521 PMCID: PMC10232477 DOI: 10.1038/s41467-023-38841-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 05/18/2023] [Indexed: 06/02/2023] Open
Abstract
How the genetic landscape governs a tumor's response to immunotherapy remains poorly understood. To assess the immune-modulatory capabilities of 573 genes associated with altered cytotoxicity in human cancers, here we perform CRISPR/Cas9 screens directly in mouse lung cancer models. We recover the known immune evasion factors Stat1 and Serpinb9 and identify the cancer testis antigen Adam2 as an immune modulator, whose expression is induced by KrasG12D and further elevated by immunotherapy. Using loss- and gain-of-function experiments, we show that ADAM2 functions as an oncogene by restraining interferon and TNF cytokine signaling causing reduced presentation of tumor-associated antigens. ADAM2 also restricts expression of the immune checkpoint inhibitors PDL1, LAG3, TIGIT and TIM3 in the tumor microenvironment, which might explain why ex vivo expanded and adoptively transferred cytotoxic T-cells show enhanced cytotoxic efficacy in ADAM2 overexpressing tumors. Together, direct in vivo CRISPR/Cas9 screens can uncover genetic alterations that control responses to immunotherapies.
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Affiliation(s)
- Dzana Dervovic
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Ahmad A Malik
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Edward L Y Chen
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Masahiro Narimatsu
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Nina Adler
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, ON, Canada
| | - Somaieh Afiuni-Zadeh
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Dagmar Krenbek
- Department of Pathology and Bacteriology, Klinik Floridsdorf, Vienna, Austria
| | - Sebastien Martinez
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Ricky Tsai
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Jonathan Boucher
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Jacob M Berman
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Katie Teng
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Arshad Ayyaz
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - YiQing Lü
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Geraldine Mbamalu
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Sampath K Loganathan
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Otolaryngology, Head and Neck Surgery, McGill University, Montreal, QC, Canada
| | - Jongbok Lee
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Li Zhang
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Departments of Laboratory Medicine and Pathobiology, Immunology, University of Toronto, Toronto, ON, Canada
| | - Cynthia Guidos
- SickKids Research Institute, University Health Network, Toronto, ON, Canada
| | - Jeffrey Wrana
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Arschang Valipour
- Karl-Landsteiner-Institute for Lung Research and Pulmonary Oncology, Klinik Floridsdorf, Vienna, Austria
| | - Philippe P Roux
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Jüri Reimand
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, ON, Canada
| | - Hartland W Jackson
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Daniel Schramek
- Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.
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9
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Tkacik E, Li K, Gonzalez-Del Pino G, Ha BH, Vinals J, Park E, Beyett TS, Eck MJ. Structure and RAF family kinase isoform selectivity of type II RAF inhibitors tovorafenib and naporafenib. J Biol Chem 2023; 299:104634. [PMID: 36963492 PMCID: PMC10149214 DOI: 10.1016/j.jbc.2023.104634] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 03/26/2023] Open
Abstract
Upon activation by RAS, RAF family kinases initiate signaling through the MAP kinase cascade to control cell growth, proliferation, and differentiation. Among RAF isoforms (ARAF, BRAF, and CRAF), oncogenic mutations are by far most frequent in BRAF. The BRAFV600E mutation drives more than half of all malignant melanoma and is also found in many other cancers. Selective inhibitors of BRAFV600E (vemurafenib, dabrafenib, encorafenib) are used clinically for these indications, but they are not effective inhibitors in the context of oncogenic RAS, which drives dimerization and activation of RAF, nor for malignancies driven by aberrantly dimerized truncation/fusion variants of BRAF. By contrast, a number of "type II" RAF inhibitors have been developed as potent inhibitors of RAF dimers. Here, we compare potency of type II inhibitors tovorafenib (TAK-580) and naporafenib (LHX254) in biochemical assays against the three RAF isoforms and describe crystal structures of both compounds in complex with BRAF. We find that tovorafenib and naporafenib are most potent against CRAF but markedly less potent against ARAF. Crystal structures of both compounds with BRAFV600E or WT BRAF reveal the details of their molecular interactions, including the expected type II-binding mode, with full occupancy of both subunits of the BRAF dimer. Our findings have important clinical ramifications. Type II RAF inhibitors are generally regarded as pan-RAF inhibitors, but our studies of these two agents, together with recent work with type II inhibitors belvarafenib and naporafenib, indicate that relative sparing of ARAF may be a property of multiple drugs of this class.
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Affiliation(s)
- Emre Tkacik
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Kunhua Li
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Gonzalo Gonzalez-Del Pino
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Byung Hak Ha
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Javier Vinals
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Eunyoung Park
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Tyler S Beyett
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael J Eck
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA.
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10
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Dora D, Vörös I, Varga ZV, Takacs P, Teglasi V, Moldvay J, Lohinai Z. BRAF RNA is prognostic and widely expressed in lung adenocarcinoma. Transl Lung Cancer Res 2023; 12:27-41. [PMID: 36762067 PMCID: PMC9903089 DOI: 10.21037/tlcr-22-449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 10/24/2022] [Indexed: 01/15/2023]
Abstract
Background BRAF is a critical member of proliferation pathways in cancer, and a mutation is present in only 2-4% of lung adenocarcinomas (LADC). There is no data available on the expression pattern of BRAF RNA that might result in enhanced signalling and drug resistance. Methods LADC tissue samples (n=64) were fixed and processed into paraffin blocks. Tissue microarrays (TMA) were constructed, and RNAScope® in situ hybridization (ISH) assay was performed for wild-type (WT) BRAF RNA. Apart from pathological assessment of tumor samples (grade, necrosis, vascular involvement and peritumoral infiltration), anti-programmed death ligand 1 (PD-L1) and anti-programmed death 1 (PD-1) immunohistochemistry and validation in public databases [The Cancer Genome Atlas (TCGA), Human Protein Atlas (HPA)] were carried out. Results WT BRAF RNA is expressed in LADC, with no significant expressional difference between early-stage (I-II) and advanced-stage (III-IV) patients (P=0.317). Never smokers exhibited significantly increased BRAF expression (compared to current and ex-smokers, P<0.01) and tumor necrosis correlated significantly with BRAF expression (P=0.014). PD-L1 expression was assessed on tumor cells and immune cells, PD-1 expression was evaluated on immune cells. There was no significant difference in BRAF RNA expression between tumor cell PD-L1-high vs. low patients (P=0.124), but it was decreased in immune cell PD-L1-high patients (P=0.03). Kaplan-Meier survival analysis showed that high BRAF expression was associated with significantly decreased OS (P<0.01) and was an independent negative prognostic factor according to multivariate Cox hazard regression (P=0.024). TCGA validation cohort confirmed our findings regarding OS in early-stage patients (P=0.034). Conclusions We found an increased expression of BRAF RNA in all stages in LADC. High BRAF expression was associated with tumor necrosis, distinct immune checkpoint biology and outcomes. We recommend further evaluating the potential of targeting overexpressed BRAF pathways in LADC.
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Affiliation(s)
- David Dora
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Imre Vörös
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary;,HCEMM-SU Cardiometabolic Immunology Research Group, Semmelweis University, Budapest, Hungary;,MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Zoltán V. Varga
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary;,HCEMM-SU Cardiometabolic Immunology Research Group, Semmelweis University, Budapest, Hungary;,MTA-SE Momentum Cardio-Oncology and Cardioimmunology Research Group, Budapest, Hungary
| | - Peter Takacs
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Vanda Teglasi
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Judit Moldvay
- National Koranyi Institute of Pulmonology, Budapest, Hungary
| | - Zoltan Lohinai
- National Koranyi Institute of Pulmonology, Budapest, Hungary
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11
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Estimated sensitivity profiles of lung cancer specific uncommon BRAF mutants towards experimental and clinically approved kinase inhibitors. Toxicol Appl Pharmacol 2022; 453:116213. [PMID: 36049549 DOI: 10.1016/j.taap.2022.116213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022]
Abstract
Current experimental and clinical data are inadequate to conclusively predict the oncogenicity of uncommon BRAF mutants and their sensitivity towards kinase inhibitors. Therefore, the present study aims at estimating sensitivity profiles of uncommon lung cancer specific BRAF mutations towards clinically approved as well as experimental therapeutics based on computationally derived direct binding energies. Based on the data derived from cBioportal, BRAF mutants displayed significant mutual exclusivity with KRAS and EGFR mutants indicating them as potential drivers in lung cancer. Predicted sensitivity of BRAF-V600E conformed to published experimental and clinical data thus validating the usefulness of computational approach. The BRAF-V600K displayed higher sensitivity to most inhibitors as compared to that of the BRAF-V600E. All the uncommon mutants displayed higher sensitivity than both the wild type and BRAF-V600E towards PLX 8394 and LSN3074753. While V600K, G469R and N581S displayed favorable sensitivity profiles to most inhibitors, V600L/M, G466A/E/V and G469A/V displayed resistance profiles to a variable degree. Notably, molecular dynamic (MD) simulation revealed that increased number of interactions caused enhanced sensitivity of G469R and N581S towards sorafenib. RAF kinase inhibitors were further classified into two groups as per their selectivity (Group I: BRAF-V600E-selective and Group II: CRAF-selective) based on which potential mutation-wise combinations of RAF kinase inhibitors were proposed to overcome resistance. Based on computational inhibitor sensitivity profiles, appropriate treatment strategies may be devised to prevent or overcome secondary drug resistance in lung cancer patients with uncommon mutations.
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12
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Kim H, Jeong M, Na DH, Ryu SH, Jeong EI, Jung K, Kang J, Lee HJ, Sim T, Yu DY, Yu HC, Cho BH, Jung YK. AK2 is an AMP-sensing negative regulator of BRAF in tumorigenesis. Cell Death Dis 2022; 13:469. [PMID: 35585049 PMCID: PMC9117275 DOI: 10.1038/s41419-022-04921-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 12/14/2022]
Abstract
The RAS-BRAF signaling is a major pathway of cell proliferation and their mutations are frequently found in human cancers. Adenylate kinase 2 (AK2), which modulates balance of adenine nucleotide pool, has been implicated in cell death and cell proliferation independently of its enzyme activity. Recently, the role of AK2 in tumorigenesis was in part elucidated in some cancer types including lung adenocarcinoma and breast cancer, but the underlying mechanism is not clear. Here, we show that AK2 is a BRAF-suppressor. In in vitro assays and cell model, AK2 interacted with BRAF and inhibited BRAF activity and downstream ERK phosphorylation. Energy-deprived conditions in cell model and the addition of AMP to cell lysates strengthened the AK2-BRAF interaction, suggesting that AK2 is involved in the regulation of BRAF activity in response to cell metabolic state. AMP facilitated the AK2-BRAF complex formation through binding to AK2. In a panel of HCC cell lines, AK2 expression was inversely correlated with ERK/MAPK activation, and AK2-knockdown or -knockout increased BRAF activity and promoted cell proliferation. Tumors from HCC patients showed low-AK2 protein expression and increased ERK activation compared to non-tumor tissues and the downregulation of AK2 was also verified by two microarray datasets (TCGA-LIHC and GSE14520). Moreover, AK2/BRAF interaction was abrogated by RAS activation in in vitro assay and cell model and in a mouse model of HRASG12V-driven HCC, and AK2 ablation promoted tumor growth and BRAF activity. AK2 also bound to BRAF inhibitor-insensitive BRAF mutants and attenuated their activities. These findings indicate that AK2 monitoring cellular AMP levels is indeed a negative regulator of BRAF, linking the metabolic status to tumor growth.
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Affiliation(s)
- Hyunjoo Kim
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Muhah Jeong
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Do-Hyeong Na
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Shin-Hyeon Ryu
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Eun Il Jeong
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Kwangmin Jung
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Jaemin Kang
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
| | - Ho-June Lee
- grid.418158.10000 0004 0534 4718Departments of Discovery Oncology, Genentech, Inc., South San Francisco, CA 94080 USA
| | - Taebo Sim
- grid.35541.360000000121053345Chemical Kinomics Research Center, Korea Institute of Science and Technology, Seoul, 02792 Korea
| | - Dae-Yeul Yu
- grid.249967.70000 0004 0636 3099Aging Intervention Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Hee Chul Yu
- grid.411545.00000 0004 0470 4320Department of Surgery, Chonbuk National University Medical School, Jeonju, 561-180 Korea
| | - Baik-Hwan Cho
- grid.411545.00000 0004 0470 4320Department of Surgery, Chonbuk National University Medical School, Jeonju, 561-180 Korea
| | - Yong-Keun Jung
- grid.31501.360000 0004 0470 5905School of Biological Science, Seoul National University, Gwanak-gu, Seoul, 08826 Korea
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13
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Non-canonical genomic driver mutations of urethane carcinogenesis. PLoS One 2022; 17:e0267147. [PMID: 35482806 PMCID: PMC9049545 DOI: 10.1371/journal.pone.0267147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 04/03/2022] [Indexed: 11/19/2022] Open
Abstract
The carcinogen urethane induces pulmonary tumors in mice initiated by an incredibly specific Q61L/R oncogenic mutation in the proto-oncogene Kras. Previous Whole-Exome Sequencing of urethane-induced tumors revealed a bias towards A➙T/G and G➙A substitutions. Subsequent ultra-sensitive Maximum-Depth Sequencing of Kras shortly after urethane exposure suggest a further refinement to CA➙CT/G substitutions. As C182AA➙C182T/GA substitutions in Kras result in Q61L/R mutations, the extreme bias of urethane towards these genomic driver mutations can be ascribed to the specificity of the carcinogen for CA➙CT/G substitutions. However, we previously found that changing rare codons to common in the Kras gene to increase protein expression shifted mutations in urethane-induced tumors away from Kras, or when detected in Kras, to G12D mutations that are usually rarely detected in such tumors. Moreover, the loss of p53 partially reversed this effect, generating tumors with either Q61L/R or G12D oncogenic Kras mutations, or no Kras mutations, presumably due to other genomic driver mutations. Determining the origin of these G12D and other unknown non-canonical genomic driver mutations would provide critical insight into the extreme bias of carcinogens for specific genomic driver mutations. We thus compared the types of Single Nucleotide Variations detected by previously performed Maximum-Depth Sequencing immediately after urethane exposure to the mutation signatures derived from Whole Exome Sequencing of urethane-induced tumors. This identified two types of non-canonical mutations. First, a V637E oncogenic mutation in the proto-oncogene Braf that conforms to the mutation signature of urethane, suggesting that the mutational bias of the carcinogen may account for this non-canonical mutation, similar to that for canonical Q61L/R mutations in Kras. Second, G12D and Q61H mutations in Kras that did not fit this mutation signature, and instead shared similarity with Single Nucleotide Variations detected by Maximum-Depth Sequencing from normal cells, suggesting that perhaps these mutations were pre-existing. We thus posit that when canonical Kras mutations are selected against that the carcinogen may instead promote the expansion of pre-existing genomic driver mutations, although admittedly we cannot rule out other mechanisms. Interrogating the mutation signatures of human lung cancers similarly identified KRAS genomic driver mutations that failed to match the mutation signature of the tumor. Thus, we also speculate that the selection for non-canonical genomic driver mutations during urethane carcinogenesis may reflect the process by which discordance between genomic driver mutations and mutational signatures arises in human cancers.
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14
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Rajkumar S, Berry D, Heney KA, Strong C, Ramsay L, Lajoie M, Alkallas R, Nguyen TT, Thomson C, Ahanfeshar-Adams M, Dankner M, Petrella T, Rose AAN, Siegel PM, Watson IR. Melanomas with concurrent BRAF non-p.V600 and NF1 loss-of-function mutations are targetable by BRAF/MEK inhibitor combination therapy. Cell Rep 2022; 39:110634. [PMID: 35385748 DOI: 10.1016/j.celrep.2022.110634] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/15/2021] [Accepted: 03/16/2022] [Indexed: 02/08/2023] Open
Abstract
Although combination BRAF/MEK inhibition has produced significant survival benefits for BRAF p.V600 mutant melanomas, targeted therapies approved for BRAF non-p.V600 mutant melanomas remain limited. Through the analysis of 772 cutaneous melanoma exomes, we reveal that BRAF non-p.V600 mutations co-occurs more frequently with NF1 loss, but not with oncogenic NRAS mutations, than expected by chance. We present cell signaling data, which demonstrate that BRAF non-p.V600 mutants can signal as monomers and dimers within an NF1 loss context. Concordantly, BRAF inhibitors that inhibit both monomeric and dimeric BRAF synergize with MEK inhibition to significantly reduce cell viability in vitro and tumor growth in vivo in BRAF non-p.V600 mutant melanomas with co-occurring NF1 loss-of-function mutations. Our data suggest that patients harboring BRAF non-p.V600 mutant melanomas may benefit from current FDA-approved BRAF/MEK inhibitor combination therapy currently reserved for BRAF p.V600 mutant patients.
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Affiliation(s)
- Shivshankari Rajkumar
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada
| | - Diana Berry
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada
| | - Kayla A Heney
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada
| | - Colton Strong
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - LeeAnn Ramsay
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada
| | - Mathieu Lajoie
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada
| | - Rached Alkallas
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Human Genetics, McGill University, Montréal, QC H3A 0C7, Canada
| | - Tan-Trieu Nguyen
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada
| | - Cameron Thomson
- University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | | | - Matthew Dankner
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Teresa Petrella
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
| | - April A N Rose
- Department of Oncology, McGill University, Montréal, QC H4A 3T2, Canada; Lady Davis Institute, Segal Cancer Centre, Jewish General Hospital, Montréal, QC H3T 1E2, Canada
| | - Peter M Siegel
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada; Department of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Ian R Watson
- Goodman Cancer Institute, McGill University, Montréal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada; Research Institute of the McGill University Health Centre, Montréal, QC H3H 2R9, Canada.
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15
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Early differential responses elicited by BRAF V600E in adult mouse models. Cell Death Dis 2022; 13:142. [PMID: 35145078 PMCID: PMC8831492 DOI: 10.1038/s41419-022-04597-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 12/16/2021] [Accepted: 01/19/2022] [Indexed: 11/16/2022]
Abstract
The BRAF gene is frequently mutated in cancer. The most common genetic mutation is a single nucleotide transition which gives rise to a constitutively active BRAF kinase (BRAFV600E) which in turn sustains continuous cell proliferation. The study of BRAFV600E murine models has been mainly focused on the role of BRAFV600E in tumor development but little is known on the early molecular impact of BRAFV600E expression in vivo. Here, we study the immediate effects of acute ubiquitous BRAFV600E activation in vivo. We find that BRAFV600E elicits a rapid DNA damage response in the liver, spleen, lungs but not in thyroids. This DNA damage response does not occur at telomeres and is accompanied by activation of the senescence marker p21CIP1 only in lungs but not in liver or spleen. Moreover, in lungs, BRAFV600E provokes an acute inflammatory state with a tissue-specific recruitment of neutrophils in the alveolar parenchyma and macrophages in bronchi/bronchioles, as well as bronchial/bronchiolar epithelium transdifferentiation and development of adenomas. Furthermore, whereas in non-tumor alveolar type II (ATIIs) pneumocytes, acute BRAFV600E induction elicits rapid p53-independent p21CIP1 activation, adenoma ATIIs express p53 without resulting in p21CIP1 gene activation. Conversely, albeit in Club cells BRAFV600E-mediated proliferative cue is more exacerbated compared to that occurring in ATIIs, such oncogenic stimulus culminates with p21CIP1-mediated cell cycle arrest and apoptosis. Our findings indicate that acute BRAFV600E expression drives an immediate induction of DNA damage response in vivo. More importantly, it also results in rapid differential responses of cell cycle and senescence-associated proteins in lung epithelia, thus revealing the early molecular changes emerging in BRAFV600E-challenged cells during tumorigenesis in vivo.
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16
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Venkatanarayan A, Liang J, Yen I, Shanahan F, Haley B, Phu L, Verschueren E, Hinkle TB, Kan D, Segal E, Long JE, Lima T, Liau NPD, Sudhamsu J, Li J, Klijn C, Piskol R, Junttila MR, Shaw AS, Merchant M, Chang MT, Kirkpatrick DS, Malek S. CRAF dimerization with ARAF regulates KRAS-driven tumor growth. Cell Rep 2022; 38:110351. [PMID: 35139374 DOI: 10.1016/j.celrep.2022.110351] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 09/21/2021] [Accepted: 01/19/2022] [Indexed: 02/07/2023] Open
Abstract
KRAS, which is mutated in ∼30% of all cancers, activates the RAF-MEK-ERK signaling cascade. CRAF is required for growth of KRAS mutant lung tumors, but the requirement for CRAF kinase activity is unknown. Here, we show that subsets of KRAS mutant tumors are dependent on CRAF for growth. Kinase-dead but not dimer-defective CRAF rescues growth inhibition, suggesting that dimerization but not kinase activity is required. Quantitative proteomics demonstrates increased levels of CRAF:ARAF dimers in KRAS mutant cells, and depletion of both CRAF and ARAF rescues the CRAF-loss phenotype. Mechanistically, CRAF depletion causes sustained ERK activation and induction of cell-cycle arrest, while treatment with low-dose MEK or ERK inhibitor rescues the CRAF-loss phenotype. Our studies highlight the role of CRAF in regulating MAPK signal intensity to promote tumorigenesis downstream of mutant KRAS and suggest that disrupting CRAF dimerization or degrading CRAF may have therapeutic benefit.
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Affiliation(s)
| | - Jason Liang
- Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA; Department of Microchemistry, Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Ivana Yen
- Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Frances Shanahan
- Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Benjamin Haley
- Department of Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Lilian Phu
- Department of Microchemistry, Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Erik Verschueren
- Department of Microchemistry, Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Trent B Hinkle
- Department of Microchemistry, Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - David Kan
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Ehud Segal
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jason E Long
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Tony Lima
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Nicholas P D Liau
- Department of Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jawahar Sudhamsu
- Department of Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jason Li
- Department of Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Christiaan Klijn
- Department of Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Robert Piskol
- Department of Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Melissa R Junttila
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Andrey S Shaw
- Department of Research Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Mark Merchant
- Department of Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Matthew T Chang
- Department of Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Donald S Kirkpatrick
- Department of Microchemistry, Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Shiva Malek
- Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
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Investigating a clinically actionable BRAF mutation for monitoring low-grade serous ovarian cancer: A case report. Case Rep Womens Health 2022; 34:e00395. [PMID: 35198414 PMCID: PMC8851090 DOI: 10.1016/j.crwh.2022.e00395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 12/24/2022] Open
Abstract
Low-grade serous ovarian cancer (LGSOC) poses a specific clinical challenge due to advanced presentation at diagnosis and the lack of effective systemic treatments. The aim of this study was to use a precision medicine approach to identify clinically actionable mutations in a patient with recurrent LGSOC. Primary, metastatic and recurrence tissue, and blood samples were collected from a stage IV LGSOC patient. Single-gene testing for clinically actionable mutations (BRAF V600, KRAS and NRAS) and subsequent whole-exome sequencing (WES) were performed. Droplet digital PCR was used to evaluate the presence of an identified BRAF D594G mutation in the matched plasma cell-free DNA (cfDNA). No clinically actionable mutations were identified using single-gene testing. WES identified a BRAF D594G mutation in six of seven tumor samples. The patient was commenced on a MEK inhibitor, trametinib, but with minimal clinical response. A newly designed ddPCR assay detected the BRAF alteration in the matched tissues and liquid biopsy cfDNA. The identification and sensitive plasma detection of a common “druggable” target emphasises the impact of precision medicine on the management of rare tumors and its potential contribution to novel monitoring regimens in this field. First report of BRAF D594G mutation in multiple samples of a recurrent LGSOC patient. Discovery of a BRAF actionable mutation expands the range of LGSOC therapeutic options. ddPCR assay allows sensitive detection of the mutation in tissue and plasma samples.
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18
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Tabbò F, Pisano C, Mazieres J, Mezquita L, Nadal E, Planchard D, Pradines A, Santamaria D, Swalduz A, Ambrogio C, Novello S, Ortiz-Cuaran S. How far we have come targeting BRAF-mutant non-small cell lung cancer (NSCLC). Cancer Treat Rev 2022; 103:102335. [DOI: 10.1016/j.ctrv.2021.102335] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/19/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022]
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19
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Shen M, Qi R, Ren J, Lv D, Yang H. Characterization With KRAS Mutant Is a Critical Determinant in Immunotherapy and Other Multiple Therapies for Non-Small Cell Lung Cancer. Front Oncol 2022; 11:780655. [PMID: 35070984 PMCID: PMC8766810 DOI: 10.3389/fonc.2021.780655] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 12/02/2021] [Indexed: 12/12/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is a frequent type of cancer, which is mainly characterized clinically by high aggressiveness and high mortality. KRAS oncoprotein is the most common molecular protein detected in NSCLC, accounting for 25% of all oncogenic mutations. Constitutive activation of the KRAS oncoprotein triggers an intracellular cascade in cancer cells, leading to uncontrolled cell proliferation of cancer cells and aberrant cell survival states. The results of multiple clinical trials have shown that different KRAS mutation subtypes exhibit different sensitivities to different chemotherapy regimens. Meanwhile, anti-angiogenic drugs have shown differential efficacy for different subtypes of KRAS mutated lung cancer. It was explored to find if the specificity of the KRAS mutation subtype would affect PD-L1 expression, so immunotherapy would be of potential clinical value for the treatment of some types of KRAS mutations. It was discovered that the specificity of the KRAS mutation affected PD-L1, which opened up immunotherapy as a potential clinical treatment option. After several breakthrough studies, the preliminary test data of many early clinical trials showed that it is possible to directly inhibit KRAS G12C mutation, which has been proved to be a targeted treatment that is suitable for about 10%-12% of patients with advanced NSCLC, having a significant impact on the prolongation of their survival and the improvement of their quality of life. This article reviews the latest progress of treatments for NSCLC with KRAS mutation, in order to gain insight into the biological diversity of lung cancer cells and their potential clinical implications, thereby enabling individualized treatment for patients with KRAS-mutant NSCLC.
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Affiliation(s)
- Mo Shen
- Key Laboratory of Radiation Oncology of Taizhou, Radiation Oncology Institute of Enze Medical Health Academy, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
- The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou, China
| | - Rongbin Qi
- Key Laboratory of Radiation Oncology of Taizhou, Radiation Oncology Institute of Enze Medical Health Academy, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
- Department of Respiratory Medicine, Enze Hospital, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
| | - Justin Ren
- Biological Sciences, Northwestern University, Evanston, Evanston, IL, United States
| | - Dongqing Lv
- Key Laboratory of Radiation Oncology of Taizhou, Radiation Oncology Institute of Enze Medical Health Academy, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
- Department of Respiratory Medicine, Enze Hospital, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
| | - Haihua Yang
- Key Laboratory of Radiation Oncology of Taizhou, Radiation Oncology Institute of Enze Medical Health Academy, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
- Department of Radiation Oncology, Enze Hospital, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, China
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20
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Ritu K, Kumar P, Singh A, Nupur K, Spalgias S, Mrigpuri P, Rajkumar. Untangling the KRAS mutated lung cancer subsets and its therapeutic implications. MOLECULAR BIOMEDICINE 2021; 2:40. [PMID: 34918209 PMCID: PMC8677854 DOI: 10.1186/s43556-021-00061-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022] Open
Abstract
The Kirsten rat sarcoma virus transforming protein (KRAS) mutations (predominate in codons 12, 13, and 61) and genomically drive nearly one-third of lung carcinomas. These mutations have complex functions in tumorigenesis, and influence the tumor response to chemotherapy and tyrosine kinase inhibitors resulting in a poorer patient prognosis. Recent attempts using targeted therapies against KRAS alone have met with little success. The existence of specific subsets of lung cancer based on KRAS mutations and coexisting mutations are suggested. Their interactions need further elaboration before newer promising targeted therapies for KRAS mutant lung cancers can be used as earlier lines of therapy. We summarize the existing knowledge of KRAS mutations and their coexisting mutations that is relevant to lung cancer treatment, in this review. We elaborate on the prognostic impact of clinical and pathologic characteristics of lung cancer patients associated with KRAS mutations. We briefly review the currently available techniques for KRAS mutation detection on biopsy and cytology samples. Finally, we discuss the new therapeutic strategies for targeting KRAS-mutant non-small cell lung cancer (NSCLC). These may herald a new era in the treatment of KRASG12Cmutated NSCLC as well as be helpful to develop demographic subsets to predict targeted therapies and prognosis of lung cancer patients.
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21
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Errington TM, Denis A, Allison AB, Araiza R, Aza-Blanc P, Bower LR, Campos J, Chu H, Denson S, Donham C, Harr K, Haven B, Iorns E, Kwok J, McDonald E, Pelech S, Perfito N, Pike A, Sampey D, Settles M, Scott DA, Sharma V, Tolentino T, Trinh A, Tsui R, Willis B, Wood J, Young L. Experiments from unfinished Registered Reports in the Reproducibility Project: Cancer Biology. eLife 2021; 10:73430. [PMID: 34874009 PMCID: PMC8651290 DOI: 10.7554/elife.73430] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/14/2021] [Indexed: 12/16/2022] Open
Abstract
As part of the Reproducibility Project: Cancer Biology, we published Registered Reports that described how we intended to replicate selected experiments from 29 high-impact preclinical cancer biology papers published between 2010 and 2012. Replication experiments were completed and Replication Studies reporting the results were submitted for 18 papers, of which 17 were accepted and published by eLife with the rejected paper posted as a preprint. Here, we report the status and outcomes obtained for the remaining 11 papers. Four papers initiated experimental work but were stopped without any experimental outcomes. Two papers resulted in incomplete outcomes due to unanticipated challenges when conducting the experiments. For the remaining five papers only some of the experiments were completed with the other experiments incomplete due to mundane technical or unanticipated methodological challenges. The experiments from these papers, along with the other experiments attempted as part of the Reproducibility Project: Cancer Biology, provides evidence about the challenges of repeating preclinical cancer biology experiments and the replicability of the completed experiments.
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Affiliation(s)
| | | | - Anne B Allison
- Piedmont Virginia Community College, Charlottesville, United States
| | - Renee Araiza
- University of California, Davis, Davis, United States
| | | | | | | | - Heidi Chu
- Applied Biological Materials, Richmond, Canada
| | - Sarah Denson
- University of California, Davis, Davis, United States
| | | | - Kaitlyn Harr
- University of Virginia, Charlottesville, United States
| | | | | | - Jennie Kwok
- Applied Biological Materials, Richmond, Canada
| | - Elysia McDonald
- Drexel University College of Medicine, Philadelphia, United States
| | - Steven Pelech
- Kinexus Bioinformatics, Vancouver, Canada.,University of British Columbia, Vancouver, United States
| | | | - Amanda Pike
- Applied Biological Materials, Richmond, Canada
| | | | | | - David A Scott
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States
| | | | | | | | | | | | - Joshua Wood
- University of California, Davis, Davis, United States
| | - Lisa Young
- Applied Biological Materials, Richmond, Canada
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22
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Ingram K, Samson SC, Zewdu R, Zitnay RG, Snyder EL, Mendoza MC. NKX2-1 controls lung cancer progression by inducing DUSP6 to dampen ERK activity. Oncogene 2021; 41:293-300. [PMID: 34689179 PMCID: PMC8738158 DOI: 10.1038/s41388-021-02076-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 10/06/2021] [Accepted: 10/11/2021] [Indexed: 01/07/2023]
Abstract
The RAS→RAF→MEK→ERK pathway is hyperactivated in the majority of human lung adenocarcinoma (LUAD). However, the initial activating mutations induce homeostatic feedback mechanisms that limit ERK activity. How ERK activation reaches the tumor-promoting levels that overcome the feedback and drive malignant progression is unclear. We show here that the lung lineage transcription factor NKX2-1 suppresses ERK activity. In human tissue samples and cell lines, xenografts, and genetic mouse models, NKX2-1 induces the ERK phosphatase DUSP6, which inactivates ERK. In tumor cells from late-stage LUAD with silenced NKX2-1, re-introduction of NKX2-1 induces DUSP6 and inhibits tumor growth and metastasis. We show that DUSP6 is necessary for NKX2-1-mediated inhibition of tumor progression in vivo and that DUSP6 expression is sufficient to inhibit RAS-driven LUAD. Our results indicate that NKX2-1 silencing, and thereby DUSP6 downregulation, is a mechanism by which early LUAD can unleash ERK hyperactivation for tumor progression.
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Affiliation(s)
- Kelley Ingram
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT, 84112, USA.,Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA
| | - Shiela C Samson
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT, 84112, USA.,Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA
| | - Rediet Zewdu
- Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA.,Department of Pathology, University of Utah, Salt Lake City, UT, 84112, USA
| | - Rebecca G Zitnay
- Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA.,Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Eric L Snyder
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT, 84112, USA.,Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA.,Department of Pathology, University of Utah, Salt Lake City, UT, 84112, USA
| | - Michelle C Mendoza
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT, 84112, USA. .,Huntsman Cancer Institute, Salt Lake City, UT, 84112, USA. .,Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, 84112, USA.
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23
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Song J, Du L, Liu P, Wang F, Zhang B, Xie Y, Lu J, Jin Y, Zhou Y, Lv G, Zhang J, Chen S, Chen Z, Sun X, Zhang Y, Huang Q. Intra-heterogeneity in transcription and chemoresistant property of leukemia-initiating cells in murine Setd2 -/- acute myeloid leukemia. Cancer Commun (Lond) 2021; 41:867-888. [PMID: 34196511 PMCID: PMC8441059 DOI: 10.1002/cac2.12189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/09/2021] [Accepted: 06/19/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Heterogeneity of leukemia-initiating cells (LICs) is a major obstacle in acute myeloid leukemia (AML) therapy. Accumulated evidence indicates that the coexistence of multiple types of LICs with different pathogenicity in the same individual is a common feature in AML. However, the functional heterogeneity including the drug response of coexistent LICs remains unclear. Therefore, this study aimed to clarify the intra-heterogeneity in LICs that can help predict leukemia behavior and develop more effective treatments. METHODS Spleen cells from the primary Setd2-/- -AML mouse were transplanted into C57BL/6 recipient mice to generate a transplantable model. Flow cytometry was used to analyze the immunophenotype of the leukemic mice. Whole-genome sequencing was conducted to detect secondary hits responsible for leukemia transformation. A serial transplantation assay was used to determine the self-renewal potential of Setd2-/- -AML cells. A limiting-dilution assay was performed to identify the LIC frequency in different subsets of leukemia cells. Bulk and single-cell RNA sequencing were performed to analyze the transcriptional heterogeneity of LICs. Small molecular inhibitor screening and in vivo drug treatment were employed to clarify the difference in drug response between the different subsets of LICs. RESULTS In this study, we observed an aged Setd2-/- mouse developing AML with co-mutation of NrasG12S and BrafK520E . Further investigation identified two types of LICs residing in the c-Kit+ B220+ Mac-1- and c-Kit+ B220+ Mac-1+ subsets, respectively. In vivo transplantation assay disclosed the heterogeneity in differentiation between the coexistent LICs. Besides, an intrinsic doxorubicin-resistant transcriptional signature was uncovered in c-Kit+ B220+ Mac-1+ cells. Indeed, doxorubicin plus cytarabine (DA), the standard chemotherapeutic regimen used in AML treatment, could specifically kill c-Kit+ B220+ Mac-1- cells, but it hardly affected c-Kit+ B220+ Mac-1+ cells. Transcriptome analysis unveiled a higher activation of RAS downstream signaling pathways in c-Kit+ B220+ Mac-1+ cells than in c-Kit+ B220+ Mac-1- cells. Combined treatment with DA and RAS pathway inhibitors killed both c-Kit+ B220+ Mac-1- and c-Kit+ B220+ Mac-1+ cells and attenuated disease progression. CONCLUSIONS This study identified two cell subsets enriched for LICs in murine Setd2-/- -AML and disclosed the transcriptional and functional heterogeneity of LICs, revealing that the coexistence of different types of LICs in this model brings about diverse drug response.
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Affiliation(s)
- Jiachun Song
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Longting Du
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Ping Liu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Fuhui Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Bo Zhang
- Novel Bioinformatics Co., Ltd, Shanghai, 201114, P. R. China
| | - Yinyin Xie
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Jing Lu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yi Jin
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yan Zhou
- Central Laboratory, Renji Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, P. R. China
| | - Gang Lv
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Jianmin Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Saijuan Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Zhu Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Xiaojian Sun
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yuanliang Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Qiuhua Huang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
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24
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Addiction to Golgi-resident PI4P synthesis in chromosome 1q21.3-amplified lung adenocarcinoma cells. Proc Natl Acad Sci U S A 2021; 118:2023537118. [PMID: 34155143 PMCID: PMC8237628 DOI: 10.1073/pnas.2023537118] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A chromosome 1q21.3 region that is frequently amplified in diverse cancer types encodes phosphatidylinositol (PI)-4 kinase IIIβ (PI4KIIIβ), a key regulator of secretory vesicle biogenesis and trafficking. Chromosome 1q21.3-amplified lung adenocarcinoma (1q-LUAD) cells rely on PI4KIIIβ for Golgi-resident PI-4-phosphate (PI4P) synthesis, prosurvival effector protein secretion, and cell viability. Here, we show that 1q-LUAD cells subjected to prolonged PI4KIIIβ antagonist treatment acquire tolerance by activating an miR-218-5p-dependent competing endogenous RNA network that up-regulates PI4KIIα, which provides an alternative source of Golgi-resident PI4P that maintains prosurvival effector protein secretion and cell viability. These findings demonstrate an addiction to Golgi-resident PI4P synthesis in a genetically defined subset of cancers.
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25
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Dias MH, Bernards R. Playing cancer at its own game: activating mitogenic signaling as a paradoxical intervention. Mol Oncol 2021; 15:1975-1985. [PMID: 33955157 PMCID: PMC8333773 DOI: 10.1002/1878-0261.12979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/12/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
In psychotherapy, paradoxical interventions are characterized by a deliberate reinforcement of the pathological behavior to improve the clinical condition. Such a counter-intuitive approach can be considered when more conventional interventions fail. The development of targeted cancer therapies has enabled the selective inhibition of activated oncogenic signaling pathways. However, in advanced cancers, such therapies, on average, deliver modest benefits due to the development of resistance. Here, we review the perspective of a 'paradoxical intervention' in cancer therapy: rather than attempting to inhibit oncogenic signaling, the proposed therapy would further activate mitogenic signaling to disrupt the labile homeostasis of cancer cells and overload stress response pathways. Such overactivation can potentially be combined with stress-targeted drugs to kill overstressed cancer cells. Although counter-intuitive, such an approach exploits intrinsic and ubiquitous differences between normal and cancer cells. We discuss the background underlying this unconventional approach and how such intervention might address some current challenges in cancer therapy.
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Affiliation(s)
- Matheus Henrique Dias
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - René Bernards
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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26
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Li S, Counter CM. Signaling levels mold the RAS mutation tropism of urethane. eLife 2021; 10:67172. [PMID: 33998997 PMCID: PMC8128437 DOI: 10.7554/elife.67172] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/01/2021] [Indexed: 12/29/2022] Open
Abstract
RAS genes are commonly mutated in human cancer. Despite many possible mutations, individual cancer types often have a 'tropism' towards a specific subset of RAS mutations. As driver mutations, these patterns ostensibly originate from normal cells. High oncogenic RAS activity causes oncogenic stress and different oncogenic mutations can impart different levels of activity, suggesting a relationship between oncoprotein activity and RAS mutation tropism. Here, we show that changing rare codons to common in the murine Kras gene to increase protein expression shifts tumors induced by the carcinogen urethane from arising from canonical Q61 to biochemically less active G12 Kras driver mutations, despite the carcinogen still being biased towards generating Q61 mutations. Conversely, inactivating the tumor suppressor p53 to blunt oncogenic stress partially reversed this effect, restoring Q61 mutations. One interpretation of these findings is that the RAS mutation tropism of urethane arises from selection in normal cells for specific mutations that impart a narrow window of signaling that promotes proliferation without causing oncogenic stress.
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Affiliation(s)
- Siqi Li
- Pharmacology and Cancer Biology, Duke University, Durham, United States
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27
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Nokin MJ, Ambrogio C, Nadal E, Santamaria D. Targeting Infrequent Driver Alterations in Non-Small Cell Lung Cancer. Trends Cancer 2020; 7:410-429. [PMID: 33309239 DOI: 10.1016/j.trecan.2020.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/12/2020] [Accepted: 11/12/2020] [Indexed: 02/08/2023]
Abstract
The discovery of oncogenic driver mutations led to the development of targeted therapies with non-small cell lung cancer (NSCLC) being a paradigm for precision medicine in this setting. Nowadays, the number of clinical trials focusing on targeted therapies for uncommon drivers is growing exponentially, emphasizing the medical need for these patients. Unfortunately, similar to what is observed with most targeted therapies directed against a driver oncogene, the clinical response is almost always temporary and acquired resistance to these drugs invariably emerges. Here, we review the biology of infrequent genomic actionable alterations in NSCLC as well as the current and emerging therapeutic options for these patients. Mechanisms leading to acquired drug resistance and future challenges in the field are also discussed.
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Affiliation(s)
- Marie-Julie Nokin
- University of Bordeaux, INSERM U1218, ACTION Laboratory, IECB, 33600 Pessac, France
| | - Chiara Ambrogio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ernest Nadal
- Department of Medical Oncology, Catalan Institute of Oncology, Clinical Research in Solid Tumors (CReST) Group, Oncobell Program, IDIBELL, L'Hospitalet, Barcelona, Spain.
| | - David Santamaria
- University of Bordeaux, INSERM U1218, ACTION Laboratory, IECB, 33600 Pessac, France.
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28
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Clinicopathologic and Molecular Characteristics of Familial Adenomatous Polyposis-associated Traditional Serrated Adenoma. Am J Surg Pathol 2020; 44:1282-1289. [PMID: 32384323 DOI: 10.1097/pas.0000000000001502] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Colorectal carcinogenesis in familial adenomatous polyposis (FAP) follows a conventional adenoma-carcinoma sequence. However, previous studies have also reported the occurrence of traditional serrated adenomas (TSAs) in patients with FAP. In the present study, we analyzed the clinicopathologic and molecular features of 37 TSAs from 21 FAP patients. Histologically, the majority of FAP-associated TSAs showed typical cytology and slit-like serration; however, ectopic crypt formation was infrequent. Next-generation sequencing and Sanger sequencing identified KRAS and BRAF V600E mutations in 18 (49%) and 14 (38%) TSAs, respectively. Somatic APC mutations were detected in 26 lesions (84% of analyzed cases). Three lesions had BRAF non-V600E mutations, and 2 of them had a concurrent KRAS mutation. Seven TSAs (19%) were associated with a precursor polyp, 6 with a hyperplastic polyp, and 1 with a sessile serrated lesion, and all of them showed the BRAF V600E mutation. Additional sequencing analysis of 4 TSAs with a precursor polyp showed that the BRAF V600E mutation was shared between the TSA and precursor components, but APC mutations were exclusive to the TSA component in all the analyzed lesions. None of the lesions showed the high CpG island methylation phenotype. These results indicate that FAP-associated TSAs frequently have KRAS or BRAF mutations, similar to sporadic cases, and second-hit somatic APC mutations are commonly involved in their tumorigenesis as in other FAP-associated tumors. Although progression to adenocarcinoma is likely rare, tumorigenesis via the serrated pathway occurs in patients with FAP.
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29
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Liau NPD, Venkatanarayan A, Quinn JG, Phung W, Malek S, Hymowitz SG, Sudhamsu J. Dimerization Induced by C-Terminal 14-3-3 Binding Is Sufficient for BRAF Kinase Activation. Biochemistry 2020; 59:3982-3992. [PMID: 32970425 DOI: 10.1021/acs.biochem.0c00517] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Ras-RAF-MEK-ERK signaling axis, commonly mutated in human cancers, is highly regulated to prevent aberrant signaling in healthy cells. One of the pathway modulators, 14-3-3, a constitutive dimer, induces RAF dimerization and activation by binding to a phosphorylated motif C-terminal to the RAF kinase domain. Recent work has suggested that a C-terminal "DTS" region in BRAF is necessary for this 14-3-3-mediated activation. We show that the catalytic activity and ATP binding affinity of the BRAF:14-3-3 complex is insensitive to the presence or absence of the DTS, while the ATP sites of both BRAF molecules are identical and available for binding. We also present a crystal structure of the apo BRAF:14-3-3 complex showing that the DTS is not required to attain the catalytically active conformation of BRAF. Rather, BRAF dimerization induced by 14-3-3 is the key step in activation, allowing the active BRAF:14-3-3 tetramer to achieve catalytic activity comparable to the constitutively active oncogenic BRAF V600E mutant.
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Sadashima S, Suzuki SO, Haruyama H, Mukae N, Fujioka Y, Hata N, Mizoguchi M, Ishimatsu K, Hiwatashi A, Iwaki T. A juvenile case of epilepsy-associated, isocitrate dehydrogenase wild-type/histone 3 wild-type diffuse glioma with a rare BRAF A598T mutation. Neuropathology 2020; 40:646-650. [PMID: 32996219 DOI: 10.1111/neup.12693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/22/2020] [Accepted: 05/23/2020] [Indexed: 12/14/2022]
Abstract
Here, we report a juvenile (18-year-old male) case of epilepsy-associated, isocitrate dehydrogenase wild-type/histone 3 wild-type diffuse glioma with a rare BRAF mutation and a focal atypical feature resembling diffuse astrocytoma. The patient presented with refractory temporal lobe epilepsy. Subsequently, magnetic resonance imaging revealed a hyperintense lesion in the right temporal lobe on fluid attenuated inversion recovery images. The patient underwent right lateral temporal lobectomy and amygdalohippocampectomy. Histopathologically, the tumor showed isomorphic, diffuse, infiltrative proliferation of glial tumor cells and intense CD34 immunoreactivity. The tumor cells were immunonegative for isocitrate dehydrogenase 1 (IDH1) R132H and BRAF V600E. Notably, the tumor cells showed the lack of nuclear staining for α-thalassemia/mental retardation syndrome, X-linked (ATRX). In addition, the Ki-67 labeling index, using a monoclonal antibody MIB-1, was elevated focally at tumor cells with p53 immunoreactivity. Molecular analyses identified a BRAFA598T mutation, the first case reported in a glioma. BRAFA598T is predicted to result in loss of kinase action; however, inactive mutants can stimulate mitogen-activated protein kinase kinase (MEK)-extracellular signal-regulated kinase (ERK) signaling through CRAF activation. Thus, according to the recent update of the consortium to inform molecular and practical approaches to central nervous system tumor taxonomy (cIMPACT-NOW update 4), our case is also compatible with diffuse glioma with the mitogen-activated protein kinase (MAPK) pathway alteration. Thorough immunohistochemical and molecular studies are necessary for diagnosis of epilepsy-associated, diffuse gliomas. Partial resemblance in histopathological and molecular genetic features to diffuse astrocytoma also calls for attention.
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Affiliation(s)
- Shoko Sadashima
- Department of Neuropathology, Kyushu University, Fukuoka, Japan
| | | | | | - Nobutaka Mukae
- Department of Neurosurgery, Kyushu University, Fukuoka, Japan
| | - Yutaka Fujioka
- Department of Neurosurgery, Kyushu University, Fukuoka, Japan
| | - Nobuhiro Hata
- Department of Neurosurgery, Kyushu University, Fukuoka, Japan
| | | | | | - Akio Hiwatashi
- Department of Molecular Imaging & Diagnosis, Kyushu University, Fukuoka, Japan
| | - Toru Iwaki
- Department of Neuropathology, Kyushu University, Fukuoka, Japan
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31
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Establishment and validation of an immune-associated signature in lung adenocarcinoma. Int Immunopharmacol 2020; 88:106867. [PMID: 32799112 DOI: 10.1016/j.intimp.2020.106867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/18/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022]
Abstract
Recent studies demonstrated that immune associated genes (IAGs) played an important role in the treatment of lung adenocarcinoma (LUAD). In the research, we established an IAGs signature and validated its prognostic value in LUAD by using bioinformatic methods and public databases. Based on the RNA-Seq samples from The Cancer Genome Atlas (TCGA), 576 differentially expressed IAGs were firstly identified. The R package coxph was used to select significant prognostic IAGs using both univariate and multivariate analyses. As a result, four IAGs (SCG2, CCL20, CAT, S100P) were finally screened in an IAGs signature. Based on these four IAGs, LASSO (least absolute shrinkage and selection operator) Cox regression analysis was used to construct a Risk score prognostic model and survival analysis revealed that high risk score was significantly associated with poor survival outcomes, which was validated in the external datasets GSE68465 and GSE31210. In addition, Risk score was found to be significantly associated with stage, lymphatic involvement, tumor metastasis and immune cells (B cells and dendritic cells) infiltration. Moreover, it was found that TP53 and EGFR had a higher mutation frequency in high risk group. Then a nomogram with clinical characteristics was established to superiorly predict prognosis of LUAD patients, and calibration plots and ROC analysis proved its accuracy. We believe that our findings can be conveniently used for individualized prediction of the clinical prognosis for LUAD patients, but further clinical trials and experimental exploration are needed to validate our observations.
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32
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Wu PK, Becker A, Park JI. Growth Inhibitory Signaling of the Raf/MEK/ERK Pathway. Int J Mol Sci 2020; 21:ijms21155436. [PMID: 32751750 PMCID: PMC7432891 DOI: 10.3390/ijms21155436] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022] Open
Abstract
In response to extracellular stimuli, the Raf/MEK/extracellular signal-regulated kinase (ERK) pathway regulates diverse cellular processes. While mainly known as a mitogenic signaling pathway, the Raf/MEK/ERK pathway can mediate not only cell proliferation and survival but also cell cycle arrest and death in different cell types. Growing evidence suggests that the cell fate toward these paradoxical physiological outputs may be determined not only at downstream effector levels but also at the pathway level, which involves the magnitude of pathway activity, spatial-temporal regulation, and non-canonical functions of the molecular switches in this pathway. This review discusses recent updates on the molecular mechanisms underlying the pathway-mediated growth inhibitory signaling, with a major focus on the regulation mediated at the pathway level.
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Affiliation(s)
- Pui-Kei Wu
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
- Correspondence: (P.-K.W.); (J.-I.P.)
| | - Andrew Becker
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
| | - Jong-In Park
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Correspondence: (P.-K.W.); (J.-I.P.)
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Affiliation(s)
- Jenny Y Xue
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, New York, NY
| | - Piro Lito
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY.,Department of Medicine, Weill Cornell Medical College, New York, NY
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Clonal Origin Evaluated by Trunk and Branching Drivers and Prevalence of Mutations in Multiple Lung Tumor Nodules. Mol Diagn Ther 2020; 24:461-472. [DOI: 10.1007/s40291-020-00471-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Sekine S, Yamashita S, Yamada M, Hashimoto T, Ogawa R, Yoshida H, Taniguchi H, Kojima M, Ushijima T, Saito Y. Clinicopathological and molecular correlations in traditional serrated adenoma. J Gastroenterol 2020; 55:418-427. [PMID: 32052185 DOI: 10.1007/s00535-020-01673-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Traditional serrated adenoma (TSA) is the least common type of colorectal serrated polyp, which exhibits considerable morphological and molecular diversity. METHODS We examined the spectra of alterations in MAPK and WNT pathway genes and their relationship with clinicopathological features in 128 TSAs. RESULTS Sequencing analyses identified BRAF V600E, BRAF non-V600E, KRAS, and NRAS mutations in 77, 3, 45, and 1 lesion, respectively. Collectively, 124 lesions (97%) had mutations in MAPK pathway genes. Alterations in WNT pathway genes were identified in 107 lesions (84%), including RSPO fusions/overexpression, RNF43 mutations, ZNRF3 mutations, APC mutations, and CTNNB1 mutations in 47, 45, 2, 13, and 2 lesions, respectively. Ten lesions (8%) harbored GNAS mutations. There was significant interdependence between the altered MAPK and WNT pathway genes. RSPO fusions/overexpression was significantly associated with KRAS mutations (31/47, 66%), whereas most RNF43 mutations coexisted with the BRAF V600E mutation (40/45, 89%). Histologically, extensive slit-like serration was more common in lesions with the BRAF V600E mutation (71%) and those with RNF43 mutations (87%). Prominent ectopic crypt formation was more prevalent in lesions with RSPO fusions/overexpression (58%) and those with GNAS mutations (100%). CONCLUSIONS Our observations indicate that TSAs mostly harbor various combinations of concurrent WNT and MAPK gene alterations. The associations between genetic and morphological features suggest that the histological diversity of TSA reflects the underlying molecular heterogeneity.
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Affiliation(s)
- Shigeki Sekine
- Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan.
| | - Satoshi Yamashita
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Masayoshi Yamada
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Taiki Hashimoto
- Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Reiko Ogawa
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroshi Yoshida
- Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Hirokazu Taniguchi
- Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Motohiro Kojima
- Division of Pathology, Research Center for Innovative Oncology, National Cancer Center, Kashiwa, Chiba, Japan
| | - Toshikazu Ushijima
- Division of Epigenomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Yutaka Saito
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
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36
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Venkatanarayan A, Malek S. Partners in Crime: Clandestine Operations among RAS-RAF Accomplices in Promoting Tumorigenesis. Mol Cell 2020; 76:853-855. [PMID: 31951530 DOI: 10.1016/j.molcel.2019.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In this issue of Molecular Cell, Terrell et al. (2019) characterize the interactions of RAS-RAF complexes in live cells. Using bioluminescence resonance energy transfer (BRET) technology, they show that individual RAF family members exhibit distinct binding affinities to each RAS family protein, with CRAF exhibiting high binding affinities for all RAS proteins and BRAF exhibiting increased binding affinity for KRAS.
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Affiliation(s)
| | - Shiva Malek
- Department of Discovery Oncology, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
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Abstract
Pseudokinases are members of the protein kinase superfamily but signal primarily through noncatalytic mechanisms. Many pseudokinases contribute to the pathologies of human diseases, yet they remain largely unexplored as drug targets owing to challenges associated with modulation of their biological functions. Our understanding of the structure and physiological roles of pseudokinases has improved substantially over the past decade, revealing intriguing similarities between pseudokinases and their catalytically active counterparts. Pseudokinases often adopt conformations that are analogous to those seen in catalytically active kinases and, in some cases, can also bind metal cations and/or nucleotides. Several clinically approved kinase inhibitors have been shown to influence the noncatalytic functions of active kinases, providing hope that similar properties in pseudokinases could be pharmacologically regulated. In this Review, we discuss known roles of pseudokinases in disease, their unique structural features and the progress that has been made towards developing pseudokinase-directed therapeutics.
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38
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Cope NJ, Novak B, Liu Z, Cavallo M, Gunderwala AY, Connolly M, Wang Z. Analyses of the oncogenic BRAF D594G variant reveal a kinase-independent function of BRAF in activating MAPK signaling. J Biol Chem 2020; 295:2407-2420. [PMID: 31929109 DOI: 10.1074/jbc.ra119.011536] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/07/2020] [Indexed: 12/19/2022] Open
Abstract
Class 3 mutations in B-Raf proto-oncogene, Ser/Thr kinase (BRAF), that result in kinase-impaired or kinase-dead BRAF have the highest mutation frequency in BRAF gene in lung adenocarcinoma. Several studies have reported that kinase-dead BRAF variants amplify mitogen-activated protein kinase (MAPK) signaling by dimerizing with and activating WT C-Raf proto-oncogene, Ser/Thr kinase (CRAF). However, the structural and functional principles underlying their activation remain elusive. Herein, using cell biology and various biochemical approaches, we established that variant BRAFD594G, a kinase-dead representative of class 3 mutation-derived BRAF variants, has a higher dimerization potential as compared with WT BRAF. Molecular dynamics simulations uncovered that the D594G substitution orients the αC-helix toward the IN position and extends the activation loop within the kinase domain, shifting the equilibrium toward the active, dimeric conformation, thus priming BRAFD594G as an effective allosteric activator of CRAF. We found that B/CRAF heterodimers are the most thermodynamically stable RAF dimers, suggesting that RAF heterodimers, and not homodimers, are the major players in determining the amplitude of MAPK signaling in cells. Additionally, we show that BRAFD594G:CRAF heterodimers bypass autoinhibitory P-loop phosphorylation, which might contribute to longer duration of MAPK pathway signaling in cancer cells. Last, we propose that the dimer interface of the BRAFD594G:CRAF heterodimer may represent a promising target in the design of novel anticancer therapeutics.
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Affiliation(s)
- Nicholas J Cope
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Borna Novak
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Zhiwei Liu
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Maria Cavallo
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Amber Y Gunderwala
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Matthew Connolly
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Zhihong Wang
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, Pennsylvania 19104.
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39
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Khaliq M, Fallahi-Sichani M. Epigenetic Mechanisms of Escape from BRAF Oncogene Dependency. Cancers (Basel) 2019; 11:cancers11101480. [PMID: 31581557 PMCID: PMC6826668 DOI: 10.3390/cancers11101480] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/28/2019] [Accepted: 09/29/2019] [Indexed: 12/14/2022] Open
Abstract
About eight percent of all human tumors (including 50% of melanomas) carry gain-of-function mutations in the BRAF oncogene. Mutated BRAF and subsequent hyperactivation of the MAPK signaling pathway has motivated the use of MAPK-targeted therapies for these tumors. Despite great promise, however, MAPK-targeted therapies in BRAF-mutant tumors are limited by the emergence of drug resistance. Mechanisms of resistance include genetic, non-genetic and epigenetic alterations. Epigenetic plasticity, often modulated by histone-modifying enzymes and gene regulation, can influence a tumor cell's BRAF dependency and therefore, response to therapy. In this review, focusing primarily on class 1 BRAF-mutant cells, we will highlight recent work on the contribution of epigenetic mechanisms to inter- and intratumor cell heterogeneity in MAPK-targeted therapy response.
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Affiliation(s)
- Mehwish Khaliq
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
- Program in Cancer Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
| | - Mohammad Fallahi-Sichani
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
- Program in Cancer Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
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40
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BRAF Mutations Classes I, II, and III in NSCLC Patients Included in the SLLIP Trial: The Need for a New Pre-Clinical Treatment Rationale. Cancers (Basel) 2019; 11:cancers11091381. [PMID: 31533235 PMCID: PMC6770188 DOI: 10.3390/cancers11091381] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 12/28/2022] Open
Abstract
BRAF V600 mutations have been found in 1-2% of non-small-cell lung cancer (NSCLC) patients, with Food and Drug Administration (FDA) approved treatment of dabrafenib plus trametinib and progression free survival (PFS) of 10.9 months. However, 50-80% of BRAF mutations in lung cancer are non-V600, and can be class II, with intermediate to high kinase activity and RAS independence, or class III, with impaired kinase activity, upstream signaling dependence, and consequently, sensitivity to receptor tyrosine kinase (RTK) inhibitors. Plasma cell-free DNA (cfDNA) of 185 newly diagnosed advanced lung adenocarcinoma patients (Spanish Lung Liquid versus Invasive Biopsy Program, SLLIP, NCT03248089) was examined for BRAF and other alterations with a targeted cfDNA next-generation sequencing (NGS) assay (Guardant360®, Guardant Health Inc., CA, USA), and results were correlated with patient outcome. Cell viability with single or combined RAF, MEK, and SHP2 inhibitors was assessed in cell lines with BRAF class I, II, and III mutations. Out of 185 patients, 22 had BRAF alterations (12%) of which seven patients harbored amplifications (32%) and 17 had BRAF mutations (77%). Of the BRAF mutations, four out of 22 (18%) were V600E and 18/22 (82%) were non-V600. In vitro results confirmed sensitivity of class III and resistance of class I and II BRAF mutations, and BRAF wild type cells to SHP2 inhibition. Concomitant MEK or RAF and SHP2 inhibition showed synergistic effects, especially in the class III BRAF-mutant cell line. Our study indicates that the class of the BRAF mutation may have clinical implications and therefore should be defined in the clinical practice and used to guide therapeutic decisions.
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41
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Skoulidis F, Heymach JV. Co-occurring genomic alterations in non-small-cell lung cancer biology and therapy. Nat Rev Cancer 2019; 19:495-509. [PMID: 31406302 PMCID: PMC7043073 DOI: 10.1038/s41568-019-0179-8] [Citation(s) in RCA: 517] [Impact Index Per Article: 103.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/09/2019] [Indexed: 02/07/2023]
Abstract
The impressive clinical activity of small-molecule receptor tyrosine kinase inhibitors for oncogene-addicted subgroups of non-small-cell lung cancer (for example, those driven by activating mutations in the gene encoding epidermal growth factor receptor (EGFR) or rearrangements in the genes encoding the receptor tyrosine kinases anaplastic lymphoma kinase (ALK), ROS proto-oncogene 1 (ROS1) and rearranged during transfection (RET)) has established an oncogene-centric molecular classification paradigm in this disease. However, recent studies have revealed considerable phenotypic diversity downstream of tumour-initiating oncogenes. Co-occurring genomic alterations, particularly in tumour suppressor genes such as TP53 and LKB1 (also known as STK11), have emerged as core determinants of the molecular and clinical heterogeneity of oncogene-driven lung cancer subgroups through their effects on both tumour cell-intrinsic and non-cell-autonomous cancer hallmarks. In this Review, we discuss the impact of co-mutations on the pathogenesis, biology, microenvironmental interactions and therapeutic vulnerabilities of non-small-cell lung cancer and assess the challenges and opportunities that co-mutations present for personalized anticancer therapy, as well as the expanding field of precision immunotherapy.
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Affiliation(s)
- Ferdinandos Skoulidis
- Department of Thoracic and Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - John V Heymach
- Department of Thoracic and Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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42
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Miao W, Sakai K, Sato H, Imamura R, Jangphattananont N, Takagi J, Nishita M, Minami Y, Matsumoto K. Impaired ligand-dependent MET activation caused by an extracellular SEMA domain missense mutation in lung cancer. Cancer Sci 2019; 110:3340-3349. [PMID: 31342590 PMCID: PMC6778621 DOI: 10.1111/cas.14142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/02/2019] [Accepted: 07/23/2019] [Indexed: 01/28/2023] Open
Abstract
Aberrant activation of the MET/hepatocyte growth factor (HGF) receptor participates in the malignant behavior of cancer cells, such as invasion‐metastasis and resistance to molecular targeted drugs. Many mutations in the MET extracellular region have been reported, but their significance is largely unknown. Here, we report the dysregulation of mutant MET originally found in a lung cancer patient with Val370 to Asp370 (V370D) replacement located in the extracellular SEMA domain. MET‐knockout cells were prepared and reconstituted with WT‐MET or V370D‐MET. HGF stimulation induced MET dimerization and biological responses in cells reconstituted with WT‐MET, but HGF did not induce MET dimerization and failed to induce biological responses in V370D‐MET cells. The V370D mutation abrogated HGF‐dependent drug resistance of lung cancer cells to epidermal growth factor receptor‐tyrosine kinase inhibitors (EGFR‐TKI). Compared with WT‐MET cells, V370D‐MET cells showed different activation patterns in receptor tyrosine kinases upon exposure to survival/growth‐stressed conditions. Surface plasmon resonance analysis indicated that affinity between the extracellular region of V370D‐MET and HGF was reduced compared with that for WT‐MET. Further analysis of the association between V370D‐MET and the separate domains of HGF indicated that the SP domain of HGF was unchanged, but its association with the NK4 domain of HGF was mostly lost in V370D‐MET. These results indicate that the V370D mutation in the MET receptor impairs the functional association with HGF and is therefore a loss‐of‐function mutation. This mutation may change the dependence of cancer cell growth/survival on signaling molecules, which may promote cancer cell characteristics under certain conditions.
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Affiliation(s)
- Wenyu Miao
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Katsuya Sakai
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | - Hiroki Sato
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | - Ryu Imamura
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | - Nawaphat Jangphattananont
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Junichi Takagi
- Laboratory of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Michiru Nishita
- Division of Cell Physiology, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Yasuhiro Minami
- Division of Cell Physiology, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan.,Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
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43
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Man RJ, Zhang YL, Jiang AQ, Zhu HL. A patent review of RAF kinase inhibitors (2010–2018). Expert Opin Ther Pat 2019; 29:675-688. [DOI: 10.1080/13543776.2019.1651842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ruo-Jun Man
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
- College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, People’s Republic of China
| | - Ya-Liang Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
| | - Ai-Qin Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People’s Republic of China
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44
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Najafi M, Ahmadi A, Mortezaee K. Extracellular-signal-regulated kinase/mitogen-activated protein kinase signaling as a target for cancer therapy: an updated review. Cell Biol Int 2019; 43:1206-1222. [PMID: 31136035 DOI: 10.1002/cbin.11187] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 05/25/2019] [Indexed: 12/19/2022]
Abstract
Mitogen-activated protein kinase (MAPK) signaling pathway is activated in a wide spectrum of human tumors, exhibiting cardinal oncogenic roles and sustained inhibition of this pathway is considered as a primary goal in clinic. Within this pathway, receptor tyrosine kinases such as epithelial growth factor receptor, mesenchymal-epithelial transition, and AXL act as upstream regulators of RAS/RAF/MEK/extracellular-signal-regulated kinase. MAPK signaling is active in both early and advanced stages of tumorigenesis, and it promotes tumor proliferation, survival, and metastasis. MAPK regulatory effects on cellular constituent of the tumor microenvironment is for immunosuppressive purposes. Cross-talking between MAPK with oncogenic signaling pathways including WNT, cyclooxygenase-2, transforming growth factor-β, NOTCH and (in particular) with phosphatidylinositol 3-kinase is contributed to the multiplication of tumor progression and drug resistance. Developing resistance (intrinsic or acquired) to MAPK-targeted therapy also occurs due to heterogeneity of tumors along with mutations and negative feedback loop of interactions exist between various kinases causing rebound activation of this signaling. Multidrug regimen is a preferred therapeutic avenue for targeting MAPK signaling. To enhance patient tolerance and to mitigate potential adversarial effects related to the combination therapy, determination of a desired dose and drug along with pre-evaluation of cancer-type-specific kinase mutation and sensitivity, especially for patients receiving triplet therapy is an urgent need.
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Affiliation(s)
- Masoud Najafi
- Department of Radiology and Nuclear Medicine, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Amirhossein Ahmadi
- Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, 48175-861, Iran
| | - Keywan Mortezaee
- Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
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45
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Blasco MT, Navas C, Martín-Serrano G, Graña-Castro O, Lechuga CG, Martín-Díaz L, Djurec M, Li J, Morales-Cacho L, Esteban-Burgos L, Perales-Patón J, Bousquet-Mur E, Castellano E, Jacob HKC, Cabras L, Musteanu M, Drosten M, Ortega S, Mulero F, Sainz B, Dusetti N, Iovanna J, Sánchez-Bueno F, Hidalgo M, Khiabanian H, Rabadán R, Al-Shahrour F, Guerra C, Barbacid M. Complete Regression of Advanced Pancreatic Ductal Adenocarcinomas upon Combined Inhibition of EGFR and C-RAF. Cancer Cell 2019; 35:573-587.e6. [PMID: 30975481 PMCID: PMC10132447 DOI: 10.1016/j.ccell.2019.03.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 01/08/2019] [Accepted: 03/04/2019] [Indexed: 12/13/2022]
Abstract
Five-year survival for pancreatic ductal adenocarcinoma (PDAC) patients remains below 7% due to the lack of effective treatments. Here, we report that combined ablation of EGFR and c-RAF expression results in complete regression of a significant percentage of PDAC tumors driven by Kras/Trp53 mutations in genetically engineered mice. Moreover, systemic elimination of these targets induces toxicities that are well tolerated. Response to this targeted therapy correlates with transcriptional profiles that resemble those observed in human PDACs. Finally, inhibition of EGFR and c-RAF expression effectively blocked tumor progression in nine independent patient-derived xenografts carrying KRAS and TP53 mutations. These results open the door to the development of targeted therapies for PDAC patients.
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Affiliation(s)
- María Teresa Blasco
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Carolina Navas
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | | | - Osvaldo Graña-Castro
- Bioinformatics Unit, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Carmen G Lechuga
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Laura Martín-Díaz
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Magdolna Djurec
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Jing Li
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Lucia Morales-Cacho
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Laura Esteban-Burgos
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Javier Perales-Patón
- Bioinformatics Unit, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Emilie Bousquet-Mur
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Eva Castellano
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Harrys K C Jacob
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Lavinia Cabras
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Monica Musteanu
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Matthias Drosten
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Sagrario Ortega
- Transgenic Unit, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Francisca Mulero
- Molecular Imaging Unit, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Bruno Sainz
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain; Department of Biochemistry, School of Medicine, Autonomous University of Madrid, 28018 Madrid, Spain
| | - Nelson Dusetti
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR 7258, Aix-Marseille Université et Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, 163, Avenue de Luminy, 13288 Marseille, France
| | - Juan Iovanna
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR 7258, Aix-Marseille Université et Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, 163, Avenue de Luminy, 13288 Marseille, France
| | - Francisco Sánchez-Bueno
- Department of Surgery, Clinical University Hospital 'Virgen Arrixaca' - Murcian Institute of Biomedical Investigation (IMIB), 30120 Murcia, Spain
| | - Manuel Hidalgo
- Rosenberg Clinical Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hossein Khiabanian
- Department of Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Raul Rabadán
- Department of Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Fátima Al-Shahrour
- Bioinformatics Unit, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain
| | - Carmen Guerra
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain.
| | - Mariano Barbacid
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain.
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46
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Beneker CM, Rovoli M, Kontopidis G, Röring M, Galda S, Braun S, Brummer T, McInnes C. Design and Synthesis of Type-IV Inhibitors of BRAF Kinase That Block Dimerization and Overcome Paradoxical MEK/ERK Activation. J Med Chem 2019; 62:3886-3897. [PMID: 30977659 DOI: 10.1021/acs.jmedchem.8b01288] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite the clinical success of BRAF inhibitors like vemurafenib in treating metastatic melanoma, resistance has emerged through "paradoxical MEK/ERK signaling" where transactivation of one protomer occurs as a result of drug inhibition of the other partner in the activated dimer. The importance of the dimerization interface in the signaling potential of wild-type BRAF in cells expressing oncogenic Ras has recently been demonstrated and proposed as a site of therapeutic intervention in targeting cancers resistant to adenosine triphosphate competitive drugs. The proof of concept for a structure-guided approach targeting the dimerization interface is described through the design and synthesis of macrocyclic peptides that bind with high affinity to BRAF and that block paradoxical signaling in malignant melanoma cells occurring through this drug target. The lead compounds identified are type-IV kinase inhibitors and represent an ideal framework for conversion into next-generation BRAF inhibitors through macrocyclic drug discovery.
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Affiliation(s)
- Chad M Beneker
- Drug Discovery and Biomedical Sciences , College of Pharmacy , Columbia , South Carolina 29208 , United States
| | - Magdalini Rovoli
- Laboratory of Biochemistry, Department of Veterinary Medicine , University of Thessaly , Karditsa 43131 , Greece
| | - George Kontopidis
- Laboratory of Biochemistry, Department of Veterinary Medicine , University of Thessaly , Karditsa 43131 , Greece
| | - Michael Röring
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine , University of Freiburg , Freiburg 79085 , Germany
| | - Simeon Galda
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine , University of Freiburg , Freiburg 79085 , Germany
| | - Sandra Braun
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine , University of Freiburg , Freiburg 79085 , Germany
| | - Tilman Brummer
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine , University of Freiburg , Freiburg 79085 , Germany.,Centre for Biological Signalling Studies, BIOSS , University of Freiburg , Schänzlestrasse 18 , Freiburg 79104 , Germany.,German Consortium for Translational Cancer Research DKTK, Partner Site Freiburg , German Cancer Research Center (DKFZ) , Heidelberg 69120 , Germany
| | - Campbell McInnes
- Drug Discovery and Biomedical Sciences , College of Pharmacy , Columbia , South Carolina 29208 , United States
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47
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Duplaquet L, Figeac M, Leprêtre F, Frandemiche C, Villenet C, Sebda S, Sarafan-Vasseur N, Bénozène M, Vinchent A, Goormachtigh G, Wicquart L, Rousseau N, Beaussire L, Truant S, Michel P, Sabourin JC, Galateau-Sallé F, Copin MC, Zalcman G, De Launoit Y, Fafeur V, Tulasne D. Functional Analysis of Somatic Mutations Affecting Receptor Tyrosine Kinase Family in Metastatic Colorectal Cancer. Mol Cancer Ther 2019; 18:1137-1148. [PMID: 30926633 DOI: 10.1158/1535-7163.mct-18-0582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 10/08/2018] [Accepted: 03/21/2019] [Indexed: 11/16/2022]
Abstract
Besides the detection of somatic receptor tyrosine kinases (RTK) mutations in tumor samples, the current challenge is to interpret their biological relevance to give patients effective targeted treatment. By high-throughput sequencing of the 58 RTK exons of healthy tissues, colorectal tumors, and hepatic metastases from 30 patients, 38 different somatic mutations in RTKs were identified. The mutations in the kinase domains and present in both tumors and metastases were reconstituted to perform an unbiased functional study. Among eight variants found in seven RTKs (EPHA4-Met726Ile, EPHB2-Val621Ile, ERBB4-Thr731Met, FGFR4-Ala585Thr, VEGFR3-Leu1014Phe, KIT-Pro875Leu, TRKB-Leu584Val, and NTRK2-Lys618Thr), none displayed significantly increased tyrosine kinase activity. Consistently, none of them induced transformation of NIH3T3 fibroblasts. On the contrary, two RTK variants (FGFR4-Ala585Thr and FLT4-Leu1014Phe) caused drastic inhibition of their kinase activity. These findings indicate that these RTK variants are not suitable targets and highlight the importance of functional studies to validate RTK mutations as potential therapeutic targets.
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Affiliation(s)
- Leslie Duplaquet
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France
| | - Martin Figeac
- Univ. Lille, Plateau de génomique fonctionnelle et structurale, CHU Lille, Lille, France
| | - Frédéric Leprêtre
- Univ. Lille, Plateau de génomique fonctionnelle et structurale, CHU Lille, Lille, France
| | - Charline Frandemiche
- TCBN - Tumorothèque Caen Basse-Normandie, Caen, France.,Réseau Régional de Cancérologie, OncoBasseNormandie, Caen, France
| | - Céline Villenet
- Univ. Lille, Plateau de génomique fonctionnelle et structurale, CHU Lille, Lille, France
| | - Shéhérazade Sebda
- Univ. Lille, Plateau de génomique fonctionnelle et structurale, CHU Lille, Lille, France
| | - Nasrin Sarafan-Vasseur
- Normandie Univ, UNIROUEN, Inserm U1245, IRON group, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Mélanie Bénozène
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France
| | - Audrey Vinchent
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France
| | | | | | | | - Ludivine Beaussire
- Normandie Univ, UNIROUEN, Inserm U1245, IRON group, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Stéphanie Truant
- Department of Digestive Surgery and Transplantation, CHU Lille, Univ Lille, Lille Cedex, France
| | - Pierre Michel
- Department of Hepato-Gastroenterology, Rouen University Hospital, Normandie Univ, UNIROUEN, Inserm U1245, IRON group, Rouen, France
| | - Jean-Christophe Sabourin
- Department of Pathology, Normandy University, INSERM 1245, Rouen University Hospital, Rouen, France
| | | | - Marie-Christine Copin
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France.,Tumorothèque du C2RC de Lille, Lille, France
| | - Gérard Zalcman
- Thoracic Oncology Department, CIC1425/CLIP2 Paris-Nord, Hôpital Bichat-Claude Bernard, Paris, France
| | - Yvan De Launoit
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France
| | - Véronique Fafeur
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France
| | - David Tulasne
- Univ. Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, Lille, France.
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48
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Yaeger R, Corcoran RB. Targeting Alterations in the RAF-MEK Pathway. Cancer Discov 2019; 9:329-341. [PMID: 30770389 PMCID: PMC6397699 DOI: 10.1158/2159-8290.cd-18-1321] [Citation(s) in RCA: 241] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/26/2018] [Accepted: 01/16/2019] [Indexed: 12/13/2022]
Abstract
The MAPK pathway is one of the most commonly mutated oncogenic pathways in cancer. Although RAS mutations are the most frequent MAPK alterations, less frequent alterations in downstream components of the pathway, including the RAF and MEK genes, offer promising therapeutic opportunities. In addition to BRAFV600 mutations, for which several approved therapeutic regimens exist, other alterations in the RAF and MEK genes may provide more rare, but tractable, targets. However, recent studies have illustrated the complexity of MAPK signaling and highlighted that distinct alterations in these genes may have strikingly different properties. Understanding the unique functional characteristics of specific RAF and MEK alterations, reviewed herein, will be critical for developing effective therapeutic approaches for these targets. SIGNIFICANCE: Alterations in the RAF and MEK genes represent promising therapeutic targets in multiple cancer types. However, given the unique and complex signaling biology of the MAPK pathway, the diverse array of RAF and MEK alterations observed in cancer can possess distinct functional characteristics. As outlined in this review, understanding the key functional properties of different RAF and MEK alterations is fundamental to selecting the optimal therapeutic approach.
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Affiliation(s)
- Rona Yaeger
- Memorial Sloan Kettering Cancer Center, New York, New York.
| | - Ryan B Corcoran
- Massachusetts General Hospital Cancer Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts.
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49
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Keller RR, Gunther EJ. Evolution of Relapse-Proficient Subclones Constrained by Collateral Sensitivity to Oncogene Overdose in Wnt-Driven Mammary Cancer. Cell Rep 2019; 26:893-905.e4. [PMID: 30673612 PMCID: PMC6382077 DOI: 10.1016/j.celrep.2018.12.096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/12/2018] [Accepted: 12/21/2018] [Indexed: 12/20/2022] Open
Abstract
Targeted cancer therapeutics select for drug-resistant rescue subclones (RSCs), which typically carry rescue mutations that restore oncogenic signaling. Whereas mutations underlying antibiotic resistance frequently burden drug-naive microbes with a fitness cost, it remains unknown whether and how rescue mutations underlying cancer relapse encounter negative selection prior to targeted therapy. Here, using mouse models of reversible, Wnt-driven mam-mary cancer, we uncovered stringent counter-selection against Wnt signaling overdose during the clonal evolution of RSCs. Analyzing recurrent tumors emerging during simulated targeted therapy (Wnt withdrawal) by multi-region DNA sequencing revealed polyclonal relapses comprised of multiple RSCs, which bear distinct but functionally equivalent rescue mutations that converge on sub-maximal Wnt pathway activation. When superimposed on native (i.e., undrugged) signaling, these rescue mutations faced negative selection, indicating that they burden RSCs with a fitness cost before Wnt withdrawal unmasks their selective advantage. Exploiting collateral sensitivity to oncogene overdose may help eliminate RSCs and prevent cancer relapse. Keller and Gunther show that Wnt-driven mammary cancers challenged with simulated targeted therapy (Wnt withdrawal) undergo clonal evolution, which stringently selects for mutations that restore a “just right” level of oncogenic signaling. Therefore, cancer relapses emerge from rare subclones that are encumbered by an untapped vulnerability to oncogene overdose.
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Affiliation(s)
- Ross R Keller
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; Penn State Hershey Cancer Institute, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Edward J Gunther
- Jake Gittlen Cancer Research Foundation, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; Penn State Hershey Cancer Institute, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; Department of Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
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50
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B-Raf deficiency impairs tumor initiation and progression in a murine breast cancer model. Oncogene 2019; 38:1324-1339. [DOI: 10.1038/s41388-018-0663-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 11/22/2018] [Accepted: 12/11/2018] [Indexed: 02/07/2023]
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