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Parker HG, Harris AC, Plassais J, Dhawan D, Kim EM, Knapp DW, Ostrander EA. Genome-wide analyses reveals an association between invasive urothelial carcinoma in the Shetland sheepdog and NIPAL1. NPJ Precis Oncol 2024; 8:112. [PMID: 38778091 PMCID: PMC11111773 DOI: 10.1038/s41698-024-00591-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 04/14/2024] [Indexed: 05/25/2024] Open
Abstract
Naturally occurring canine invasive urinary carcinoma (iUC) closely resembles human muscle invasive bladder cancer in terms of histopathology, metastases, response to therapy, and low survival rate. The heterogeneous nature of the disease has led to the association of large numbers of risk loci in humans, however most are of small effect. There exists a need for new and accurate animal models of invasive bladder cancer. In dogs, distinct breeds show markedly different rates of iUC, thus presenting an opportunity to identify additional risk factors and overcome the locus heterogeneity encountered in human mapping studies. In the association study presented here, inclusive of 100 Shetland sheepdogs and 58 dogs of other breeds, we identify a homozygous protein altering point mutation within the NIPAL1 gene which increases risk by eight-fold (OR = 8.42, CI = 3.12-22.71), accounting for nearly 30% of iUC risk in the Shetland sheepdog. Inclusion of six additional loci accounts for most of the disease risk in the breed and explains nearly 75% of the phenotypes in this study. When combined with sequence data from tumors, we show that variation in the MAPK signaling pathway is an overarching cause of iUC susceptibility in dogs.
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Affiliation(s)
- Heidi G Parker
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Center, National Institutes of Health, Bethesda, MD, USA
| | - Alexander C Harris
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Center, National Institutes of Health, Bethesda, MD, USA
| | - Jocelyn Plassais
- Institut de Génétique et Développement de Rennes, CNRS-UMR6290, University of Rennes, 35000, Rennes, France
| | - Deepika Dhawan
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Erika M Kim
- Center for Biomedical Informatics & Information Technology, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Deborah W Knapp
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
- Purdue University Center for Cancer Research, West Lafayette, IN, USA
| | - Elaine A Ostrander
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Center, National Institutes of Health, Bethesda, MD, USA.
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2
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Wang Z, Li W, Li F, Xiao R. An update of predictive biomarkers related to WEE1 inhibition in cancer therapy. J Cancer Res Clin Oncol 2024; 150:13. [PMID: 38231277 PMCID: PMC10794259 DOI: 10.1007/s00432-023-05527-y] [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: 10/09/2023] [Accepted: 11/10/2023] [Indexed: 01/18/2024]
Abstract
PURPOSE WEE1 is a crucial kinase involved in the regulation of G2/M checkpoint within the cell cycle. This article aims to comprehensively review the existing knowledge on the implication of WEE1 as a therapeutic target in tumor progression and drug resistance. Furthermore, we summarize the current predictive biomarkers employed to treat cancer with WEE1 inhibitors. METHODS A systematic review of the literature was conducted to analyze the association between WEE1 inhibition and cancer progression, including tumor advancement and drug resistance. Special attention was paid to the identification and utilization of predictive biomarkers related to therapeutic response to WEE1 inhibitors. RESULTS The review highlights the intricate involvement of WEE1 in tumor progression and drug resistance. It synthesizes the current knowledge on predictive biomarkers employed in WEE1 inhibitor treatments, offering insights into their prognostic significance. Notably, the article elucidates the potential for precision medicine by understanding these biomarkers in the context of tumor treatment outcomes. CONCLUSION WEE1 plays a pivotal role in tumor progression and is a promising therapeutic target. Distinguishing patients that would benefit from WEE1 inhibition will be a major direction of future research.
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Affiliation(s)
- Zizhuo Wang
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Wenting Li
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, 832000, Xinjiang, People's Republic of China
| | - Fuxia Li
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, 832000, Xinjiang, People's Republic of China
| | - Rourou Xiao
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, People's Republic of China.
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3
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Guerrero RM, Labajos VA, Ballena SL, Macha CA, Lezama MS, Roman CP, Beltran PM, Torrejon AF. Targeting BRAF V600E in metastatic colorectal cancer: where are we today? Ecancermedicalscience 2022; 16:1489. [PMID: 36819812 PMCID: PMC9934973 DOI: 10.3332/ecancer.2022.1489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Indexed: 12/23/2022] Open
Abstract
Colorectal cancer (CRC) is the second most frequent cause of direct cancer death worldwide. The study of the molecular state of oncogenes has predictive and prognostic value in metastatic CRC (mCRC). The B-raf proto-oncogene (BRAF) gene mutation represents the 8%-12% of all mutations in mCRC. The BRAF V600E mutation, considered the most common alteration of BRAF, corresponds to a constitutive kinase with a high activating capacity of the RAS/RAF/MEK/ERK pathway after a cascade of successive phosphorylations in the transcription of genes. BRAF V600E mutation is more prevalent in women, elderly, right-sided colon cancer and Caucasian population. Unfortunately, it is considered a poor predictive and prognosis biomarker. Patients with mCRC BRAF V600E mutated (BRAFm) are generally associated with poor response to chemotherapy and short progression-free survival and overall survival. Recently, randomised clinical trials have studied the combination of different chemotherapy regimens with angiogenic inhibitors in mCRC BRAFm. In addition, new anti-BRAF and immunotherapy agents have also been studied in this population, with positive results. The objective of this review is to acknowledge the biology and molecular pathway of BRAF, critically analyse the clinical trials and the therapy options published until today and evaluate the options of treatment according to the patient's clinical presentation.
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Affiliation(s)
- Rodrigo Motta Guerrero
- Instituto Nacional de Enfermedades Neoplásicas, Surquillo 15038, Peru
- https://orcid.org/0000-0002-8086-3513
| | - Veronica Arnao Labajos
- Instituto Nacional de Enfermedades Neoplásicas, Surquillo 15038, Peru
- https://orcid.org/0000-0001-7079-1010
| | - Sophia Lozano Ballena
- Hospital Almanzor Aguinaga Asenjo, Chiclayo 14001, Peru
- https://orcid.org/0000-0002-7868-6802
| | - Carlos Aliaga Macha
- Centro Oncológico ALIADA, San Isidro 15036, Peru
- https://orcid.org/0000-0003-0237-7058
| | - Miguel Sotelo Lezama
- Centro Oncológico ALIADA, San Isidro 15036, Peru
- https://orcid.org/0000-0002-8861-9355
| | - Cristian Pacheco Roman
- Instituto Nacional de Enfermedades Neoplásicas, Surquillo 15038, Peru
- https://orcid.org/0000-0003-2359-5126
| | - Paola Montenegro Beltran
- Instituto Nacional de Enfermedades Neoplásicas, Surquillo 15038, Peru
- https://orcid.org/0000-0002-1484-9537
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4
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Maresca L, Stecca B, Carrassa L. Novel Therapeutic Approaches with DNA Damage Response Inhibitors for Melanoma Treatment. Cells 2022; 11:1466. [PMID: 35563772 PMCID: PMC9099918 DOI: 10.3390/cells11091466] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 02/06/2023] Open
Abstract
Targeted therapies against components of the mitogen-activated protein kinase (MAPK) pathway and immunotherapies, which block immune checkpoints, have shown important clinical benefits in melanoma patients. However, most patients develop resistance, with consequent disease relapse. Therefore, there is a need to identify novel therapeutic approaches for patients who are resistant or do not respond to the current targeted and immune therapies. Melanoma is characterized by homologous recombination (HR) and DNA damage response (DDR) gene mutations and by high replicative stress, which increase the endogenous DNA damage, leading to the activation of DDR. In this review, we will discuss the current experimental evidence on how DDR can be exploited therapeutically in melanoma. Specifically, we will focus on PARP, ATM, CHK1, WEE1 and ATR inhibitors, for which preclinical data as single agents, taking advantage of synthetic lethal interactions, and in combination with chemo-targeted-immunotherapy, have been growing in melanoma, encouraging the ongoing clinical trials. The overviewed data are suggestive of considering DDR inhibitors as a valid therapeutic approach, which may positively impact the future of melanoma treatment.
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Affiliation(s)
- Luisa Maresca
- Tumor Cell Biology Unit, Core Research Laboratory, Institute for Cancer Research and Prevention (ISPRO), Viale Gaetano Pieraccini 6, 50139 Florence, Italy;
| | - Barbara Stecca
- Tumor Cell Biology Unit, Core Research Laboratory, Institute for Cancer Research and Prevention (ISPRO), Viale Gaetano Pieraccini 6, 50139 Florence, Italy;
| | - Laura Carrassa
- Fondazione Cesalpino, Arezzo Hospital, USL Toscana Sud-Est, Via Pietro Nenni 20, 52100 Arezzo, Italy
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5
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Dinavahi SS, Chen YC, Punnath K, Berg A, Herlyn M, Foroutan M, Huntington ND, Robertson GP. Targeting WEE1/AKT restores p53-dependent NK cell activation to induce immune checkpoint blockade responses in 'cold' melanoma. Cancer Immunol Res 2022; 10:757-769. [PMID: 35439317 DOI: 10.1158/2326-6066.cir-21-0587] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/19/2021] [Accepted: 04/13/2022] [Indexed: 11/16/2022]
Abstract
Immunotherapy has revolutionized cancer treatment. Unfortunately, most tumor types do not respond to immunotherapy due to a lack of immune infiltration or 'cold' tumor microenvironment (TME), a contributing factor in treatment failure. Activation of the p53 pathway can increase apoptosis of cancer cells, leading to enhanced antigen presentation, and can stimulate natural killer (NK) cells through expression of stress ligands. Therefore, modulation of the p53 pathway in cancer cells with wildtype TP53 has the potential to enhance tumor immunogenicity to NK cells, produce an inflammatory TME, and ultimately lead to tumor regression. In this study, we report simultaneous targeting of the AKT/WEE1 pathways is a novel and tolerable approach to synergistically induce p53 activation to inhibit tumor development. This approach reduced the growth of melanoma cells and induced plasma membrane surface localization of the ER-resident protein calreticulin, an indicator of immunogenic cell death (ICD). Increase in ICD led to enhanced expression of stress ligands recognized by the activating NK cell receptor NKG2D, promoting tumor lysis. WEE1/AKT inhibition resulted in recruitment and activation of immune cells, including NK cells, in the TME, triggering an inflammatory cascade that transformed the 'cold' TME of B16F10 melanoma into a 'hot' TME that responded to anti-PD-1, resulting in complete regression of established tumors. These results suggest that AKT/WEE1 pathway inhibition is a potential approach to broaden the utility of class-leading anti-PD-1 therapies by enhancing p53-mediated, NK cell-dependent tumor inflammation and supports the translation of this novel approach to further improve response rates for metastatic melanoma.
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Affiliation(s)
| | - Yu-Chi Chen
- Penn State College of Medicine, Hershey, PA, United States
| | - Kishore Punnath
- Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Arthur Berg
- Pennsylvania State University College of Medicine, Hershey, PA, United States
| | | | | | | | - Gavin P Robertson
- Pennsylvania State University College of Medicine, Hershey, PA, United States
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6
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McNeal AS, Belote RL, Zeng H, Urquijo M, Barker K, Torres R, Curtin M, Shain AH, Andtbacka RHI, Holmen S, Lum DH, McCalmont TH, VanBrocklin MW, Grossman D, Wei ML, Lang UE, Judson-Torres RL. BRAF V600E induces reversible mitotic arrest in human melanocytes via microrna-mediated suppression of AURKB. eLife 2021; 10:e70385. [PMID: 34812139 PMCID: PMC8610417 DOI: 10.7554/elife.70385] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 10/12/2021] [Indexed: 12/22/2022] Open
Abstract
Benign melanocytic nevi frequently emerge when an acquired BRAFV600E mutation triggers unchecked proliferation and subsequent arrest in melanocytes. Recent observations have challenged the role of oncogene-induced senescence in melanocytic nevus formation, necessitating investigations into alternative mechanisms for the establishment and maintenance of proliferation arrest in nevi. We compared the transcriptomes of melanocytes from healthy human skin, nevi, and melanomas arising from nevi and identified a set of microRNAs as highly expressed nevus-enriched transcripts. Two of these microRNAs-MIR211-5p and MIR328-3p-induced mitotic failure, genome duplication, and proliferation arrest in human melanocytes through convergent targeting of AURKB. We demonstrate that BRAFV600E induces a similar proliferation arrest in primary human melanocytes that is both reversible and conditional. Specifically, BRAFV600E expression stimulates either arrest or proliferation depending on the differentiation state of the melanocyte. We report genome duplication in human melanocytic nevi, reciprocal expression of AURKB and microRNAs in nevi and melanomas, and rescue of arrested human nevus cells with AURKB expression. Taken together, our data describe an alternative molecular mechanism for melanocytic nevus formation that is congruent with both experimental and clinical observations.
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Affiliation(s)
- Andrew S McNeal
- University of California, San FranciscoSan FranciscoUnited States
| | | | - Hanlin Zeng
- Huntsman Cancer Inst.Salt Lake CityUnited States
| | | | | | - Rodrigo Torres
- University of California, San FranciscoSan FranciscoUnited States
| | | | - A Hunter Shain
- University of California, San FranciscoSan FranciscoUnited States
| | - Robert HI Andtbacka
- Huntsman Cancer Inst.Salt Lake CityUnited States
- University of UtahSalt Lake CityUnited States
| | - Sheri Holmen
- Huntsman Cancer Inst.Salt Lake CityUnited States
- University of UtahSalt Lake CityUnited States
| | - David H Lum
- Huntsman Cancer Inst.Salt Lake CityUnited States
| | | | - Matt W VanBrocklin
- Huntsman Cancer Inst.Salt Lake CityUnited States
- University of UtahSalt Lake CityUnited States
| | - Douglas Grossman
- Huntsman Cancer Inst.Salt Lake CityUnited States
- University of UtahSalt Lake CityUnited States
| | - Maria L Wei
- University of California, San FranciscoSan FranciscoUnited States
| | - Ursula E Lang
- University of California, San FranciscoSan FranciscoUnited States
| | - Robert L Judson-Torres
- Huntsman Cancer Inst.Salt Lake CityUnited States
- University of UtahSalt Lake CityUnited States
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7
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Botwright NA, Mohamed AR, Slinger J, Lima PC, Wynne JW. Host-Parasite Interaction of Atlantic salmon ( Salmo salar) and the Ectoparasite Neoparamoeba perurans in Amoebic Gill Disease. Front Immunol 2021; 12:672700. [PMID: 34135900 PMCID: PMC8202022 DOI: 10.3389/fimmu.2021.672700] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/05/2021] [Indexed: 12/13/2022] Open
Abstract
Marine farmed Atlantic salmon (Salmo salar) are susceptible to recurrent amoebic gill disease (AGD) caused by the ectoparasite Neoparamoeba perurans over the growout production cycle. The parasite elicits a highly localized response within the gill epithelium resulting in multifocal mucoid patches at the site of parasite attachment. This host-parasite response drives a complex immune reaction, which remains poorly understood. To generate a model for host-parasite interaction during pathogenesis of AGD in Atlantic salmon the local (gill) and systemic transcriptomic response in the host, and the parasite during AGD pathogenesis was explored. A dual RNA-seq approach together with differential gene expression and system-wide statistical analyses of gene and transcription factor networks was employed. A multi-tissue transcriptomic data set was generated from the gill (including both lesioned and non-lesioned tissue), head kidney and spleen tissues naïve and AGD-affected Atlantic salmon sourced from an in vivo AGD challenge trial. Differential gene expression of the salmon host indicates local and systemic upregulation of defense and immune responses. Two transcription factors, znfOZF-like and znf70-like, and their associated gene networks significantly altered with disease state. The majority of genes in these networks are candidates for mediators of the immune response, cellular proliferation and invasion. These include Aurora kinase B-like, rho guanine nucleotide exchange factor 25-like and protein NDNF-like inhibited. Analysis of the N. perurans transcriptome during AGD pathology compared to in vitro cultured N. perurans trophozoites, as a proxy for wild type trophozoites, identified multiple gene candidates for virulence and indicates a potential master regulatory gene system analogous to the two-component PhoP/Q system. Candidate genes identified are associated with invasion of host tissue, evasion of host defense mechanisms and formation of the mucoid lesion. We generated a novel model for host-parasite interaction during AGD pathogenesis through integration of host and parasite functional profiles. Collectively, this dual transcriptomic study provides novel molecular insights into the pathology of AGD and provides alternative theories for future research in a step towards improved management of AGD.
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Affiliation(s)
- Natasha A Botwright
- Livestock and Aquaculture, CSIRO Agriculture and Food, St Lucia, QLD, Australia
| | - Amin R Mohamed
- Livestock and Aquaculture, CSIRO Agriculture and Food, St Lucia, QLD, Australia
| | - Joel Slinger
- Livestock and Aquaculture, CSIRO Agriculture and Food, Woorim, QLD, Australia
| | - Paula C Lima
- Livestock and Aquaculture, CSIRO Agriculture and Food, St Lucia, QLD, Australia
| | - James W Wynne
- Livestock and Aquaculture, CSIRO Agriculture and Food, Hobart, TAS, Australia
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8
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Takeda H, Sunakawa Y. Management of BRAF Gene Alterations in Metastatic Colorectal Cancer: From Current Therapeutic Strategies to Future Perspectives. Front Oncol 2021; 11:602194. [PMID: 33842313 PMCID: PMC8027060 DOI: 10.3389/fonc.2021.602194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 03/09/2021] [Indexed: 12/24/2022] Open
Abstract
BRAF mutations constitute an important poor prognostic factor in metastatic colorectal cancer (mCRC) and the development of treatments in this context is of great necessity to prolong patient survival. Although the association between BRAF mutations and microsatellite instability (MSI) has been known for several years, previous clinical trials have revealed that the former has a limited prognostic impact and that immune checkpoint inhibitors offer a significant survival benefit to mCRC patients with both characteristics. Furthermore, the genomic classification of BRAF mutations according to their molecular functions enables greater understanding of the characteristics of mCRC patients with BRAF mutations, with therapeutic strategies based on this classification made more ideal to improve poor prognosis through the delivery of targeted therapies. Recently, a phase III trial was conducted in previously treated mCRC patients with BRAF V600E-mutated tumors and revealed that the combination therapy approach of BRAF inhibition and anti-epidermal growth factor receptor antibody therapy with or without MEK inhibition was more efficacious than standard chemotherapy alone. This review discusses current treatment strategies and future perspectives in BRAF-mutated mCRC.
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Affiliation(s)
| | - Yu Sunakawa
- Department of Clinical Oncology, St Marianna University School of Medicine, Kawasaki, Japan
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9
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Quan VL, Zhang B, Zhang Y, Mohan LS, Shi K, Wagner A, Kruse L, Taxter T, Beaubier N, White K, Zou L, Gerami P. Integrating Next-Generation Sequencing with Morphology Improves Prognostic and Biologic Classification of Spitz Neoplasms. J Invest Dermatol 2020; 140:1599-1608. [PMID: 32004563 DOI: 10.1016/j.jid.2019.12.031] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/25/2019] [Accepted: 12/09/2019] [Indexed: 12/13/2022]
Abstract
The newest World Health Organization classification of skin tumors suggests the elimination of cases with BRAF and NRAS mutations from the categories of Spitz tumors (ST) and Spitz melanoma (SM). The objective of this study is to better characterize the genomics of Spitz neoplasms and assess whether the integration of genomic data with morphologic diagnosis improves classification and prognostication. We performed DNA and RNA sequencing on 80 STs, 26 SMs, and 22 melanomas with Spitzoid features (MSF). Next-generation sequencing data were used to reclassify tumors by moving BRAF and/or NRAS mutated cases to MSF. In total, 81% of STs harbored kinase fusions and/or truncations. Of SMs, 77% had fusions and/or truncations with eight involving MAP3K8. Previously unreported fusions identified were MYO5A-FGFR1, MYO5A-ERBB4, and PRKDC-CTNNB1. The majority of MSFs (84%) had BRAF, NRAS, or NF1 mutations, and 62% had TERT promoter mutations. Only after reclassification, the following was observed: (i) mRNA expression showed distinct clustering of MSF, (ii) six of seven cases with recurrence and all distant metastases were of MSFs, (iii) recurrence-free survival was worse in MSF than in the ST and SM groups (P = 0.0073); and (iv) classification incorporating genomic data was highly predictive of recurrence (OR 13.20, P = 0.0197). The majority of STs and SMs have kinase fusions as primary initiating genomic events. The elimination of BRAF and/or NRAS mutated neoplasms from these categories results in the improved classification and prognostication of melanocytic neoplasms with Spitzoid cytomorphology.
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MESH Headings
- Adolescent
- Adult
- Biomarkers, Tumor/genetics
- Disease-Free Survival
- Female
- Follow-Up Studies
- GTP Phosphohydrolases/genetics
- High-Throughput Nucleotide Sequencing
- Humans
- Logistic Models
- Male
- Melanoma/diagnosis
- Melanoma/genetics
- Melanoma/mortality
- Melanoma/pathology
- Membrane Proteins/genetics
- Middle Aged
- Mutation
- Neoplasm Recurrence, Local/epidemiology
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/pathology
- Nevus, Epithelioid and Spindle Cell/diagnosis
- Nevus, Epithelioid and Spindle Cell/genetics
- Nevus, Epithelioid and Spindle Cell/mortality
- Nevus, Epithelioid and Spindle Cell/pathology
- Oncogene Proteins, Fusion
- Prognosis
- Proto-Oncogene Proteins B-raf/genetics
- Risk Assessment/methods
- Sequence Analysis, DNA
- Sequence Analysis, RNA
- Skin/pathology
- Skin Neoplasms/diagnosis
- Skin Neoplasms/genetics
- Skin Neoplasms/mortality
- Skin Neoplasms/pathology
- Young Adult
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Affiliation(s)
- Victor L Quan
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Bin Zhang
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Yongzhan Zhang
- Department of Biochemistry and Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Lauren S Mohan
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Katherine Shi
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Annette Wagner
- Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Lacey Kruse
- Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | | | | | - Kevin White
- Tempus Labs, Inc., Chicago, IL, Illinois, USA
| | - Lihua Zou
- Department of Biochemistry and Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Pedram Gerami
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
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10
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Abstract
Significant advances have been made in the treatment of melanoma by targeting key cellular pathways, but additional targets are needed as many patients do not respond or relapse with resistant disease. MicroRNA-155 (MiR-155) has previously been shown to regulate melanoma cell growth and acts as a tumor suppressor. We tested a clinical population of melanoma tumors for miR-155 expression, and find that expression is low in most patients, although not predictive of outcome. We identified the protein kinase WEE1 as a novel target of miR-155. A mouse model of experimental metastasis finds that both increased expression of miR-155 and silencing of WEE1 lead to decreased metastases. Loss of miR-155 and increased expression of WEE1 may contribute to the metastatic phenotype in patients with melanoma.
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11
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Margue C, Philippidou D, Kozar I, Cesi G, Felten P, Kulms D, Letellier E, Haan C, Kreis S. Kinase inhibitor library screening identifies synergistic drug combinations effective in sensitive and resistant melanoma cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:56. [PMID: 30728057 PMCID: PMC6364417 DOI: 10.1186/s13046-019-1038-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 01/13/2019] [Indexed: 12/19/2022]
Abstract
Background Melanoma is the most aggressive and deadly form of skin cancer with increasing case numbers worldwide. The development of inhibitors targeting mutated BRAF (found in around 60% of melanoma patients) has markedly improved overall survival of patients with late-stage tumors, even more so when combined with MEK inhibitors targeting the same signaling pathway. However, invariably patients become resistant to this targeted therapy resulting in rapid progression with treatment-refractory disease. The purpose of this study was the identification of new kinase inhibitors that do not lead to the development of resistance in combination with BRAF inhibitors (BRAFi), or that could be of clinical benefit as a 2nd line treatment for late-stage melanoma patients that have already developed resistance. Methods We have screened a 274-compound kinase inhibitor library in 3 BRAF mutant melanoma cell lines (each one sensitive or made resistant to 2 distinct BRAFi). The screening results were validated by dose-response studies and confirmed the killing efficacies of many kinase inhibitors. Two different tools were applied to investigate and quantify potential synergistic effects of drug combinations: the Chou-Talalay method and the Synergyfinder application. In order to exclude that resistance to the new treatments might occur at later time points, synergistic combinations were administered to fluorescently labelled parental and resistant cells over a period of > 10 weeks. Results Eight inhibitors targeting Wee1, Checkpoint kinase 1/2, Aurora kinase, MEK, Polo-like kinase, PI3K and Focal adhesion kinase killed melanoma cells synergistically when combined with a BRAFi. Additionally, combination of a Wee1 and Chk inhibitor showed synergistic killing effects not only on sensitive cell lines, but also on intrinsically BRAFi- and treatment induced-resistant melanoma cells. First in vivo studies confirmed these observations. Interestingly, continuous treatment with several of these drugs, alone or in combination, did not lead to emergence of resistance. Conclusions Here, we have identified new, previously unexplored (in the framework of BRAFi resistance) inhibitors that have an effect not only on sensitive but also on BRAFi-resistant cells. These promising combinations together with the new immunotherapies could be an important step towards improved 1st and 2nd line treatments for late-stage melanoma patients. Electronic supplementary material The online version of this article (10.1186/s13046-019-1038-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christiane Margue
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Demetra Philippidou
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Ines Kozar
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Giulia Cesi
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Paul Felten
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Dagmar Kulms
- Experimental Dermatology, Department of Dermatology, Technical University Dresden, Dresden, Germany
| | - Elisabeth Letellier
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Claude Haan
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg
| | - Stephanie Kreis
- Life Sciences Research Unit, University of Luxembourg, 6, av. du Swing, L-4367, Belvaux, Luxembourg.
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12
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De Dormael R, Bastien P, Sextius P, Gueniche A, Ye D, Tran C, Chevalier V, Gomes C, Souverain L, Tricaud C. Vitamin C Prevents Ultraviolet-induced Pigmentation in Healthy Volunteers: Bayesian Meta-analysis Results from 31 Randomized Controlled versus Vehicle Clinical Studies. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2019; 12:E53-E59. [PMID: 30881584 PMCID: PMC6415704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Background: Repeated nonextreme sun exposures induce skin pigmentation by increasing melanin production and by oxidizing preexisting melanin and melanin precursors. This leads to skin disorders and skin color heterogeneity such as hyperpigmented spots. Objective: We assessed 31 randomized, controlled clinical trials to determine the potential of vitamin C to limit ultraviolet (UV) daylight-induced pigmentation, considering dose response and different skin type populations (Caucasian and Chinese). Materials and Methods: Thirty-one intraindividual, randomized, controlled clinical trials involving Caucasian and Chinese subjects (15-35 healthy male or female volunteers per study, 741 total volunteers) 18 to 50 years of age with Phototype III and individual typology angle (ITA) value between 28 and 49 degrees were analyzed. The 31 studies assessed the potential of vitamin C (formulated with the copolymer Styrène-Anhydride Maléique [SMA]) to decrease pigmentation induced by UV daylight exposure. Results were combined using a Bayesian meta-analysis to provide probabilistic evidence of the effects of vitamin C by dose and population. Results: Vitamin C was effective in reducing pigmentation induced by UV daylight-simulated expositions (4 days at 0.75 Individual Minimal Erythemal Dose [MEDi]) in a dose-dependent manner. During the depigmentation phase, no additive value was provided by the vitamin C, suggesting that the lightening properties described in the literature for vitamin C correspond to an antipigmenting quality rather than a depigmenting effect. Conclusion: Vitamin C is a valuable and safe dermocosmetic antipigmenting compound with a strong effect at 10% possibly useful in preventing signs of photoaging.
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Affiliation(s)
| | | | - Peggy Sextius
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Audrey Gueniche
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Daniel Ye
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Christian Tran
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Véronique Chevalier
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Charles Gomes
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Luc Souverain
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
| | - Caroline Tricaud
- Drs. de Dormael and Bastien contributed equally to this article
- Drs. de Dormael, Bastien, Sextius, Gueniche, Tran, Gomes
- Mr. Souverain are with L'Oréal Research and Innovation in Aulnay sous Bois, France
- Dr. Ye is with L'Oréal Research and Innovation in Shanghai, China
- Ms. Chevalier and Ms. Tricaud are with L'Oréal Research and Innovation in Chevilly-Larue, France
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13
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Gowda R, Dinavahi SS, Iyer S, Banerjee S, Neves RI, Pameijer CR, Robertson. GP. Nanoliposomal delivery of cytosolic phospholipase A 2 inhibitor arachidonyl trimethyl ketone for melanoma treatment. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2018; 14:863-873. [PMID: 29317343 PMCID: PMC5899023 DOI: 10.1016/j.nano.2017.12.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 12/15/2017] [Accepted: 12/27/2017] [Indexed: 12/19/2022]
Abstract
Drug resistance and toxicity are major limitations of cancer treatment and frequently occurs during melanoma therapy. Nanotechnology can decrease drug resistance by improving drug delivery, with limited toxicity. This study details the development of nanoparticles containing arachidonyl trifluoromethyl ketone (ATK), a cytosolic phospholipase A2 inhibitor, which can inhibit multiple key pathways responsible for the development of recurrent resistant disease. Free ATK is toxic, limiting its efficacy as a therapeutic agent. Hence, a novel nanoliposomal delivery system called NanoATK was developed, which loads 61.7% of the compound and was stable at 4oC for 12 weeks. The formulation decreased toxicity-enabling administration of higher doses, which was more effective at inhibiting melanoma cell growth compared to free-ATK. Mechanistically, NanoATK decreased cellular proliferation and triggered apoptosis to inhibit melanoma xenograft tumor growth without affecting animal weight. Functionally, it inhibited the cPLA2, AKT, and STAT3 pathways. Our results suggest the successful preclinical development of a unique nanoliposomal formulation containing ATK for the treatment of melanoma.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033,The Penn State Melanoma and Skin Cancer Center The Pennsylvania State University College of Medicine, Hershey, PA 17033,Penn State Melanoma Therapeutics Program The Pennsylvania State University College of Medicine, Hershey, PA 17033,Foreman Foundation for Melanoma Research The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Saketh S. Dinavahi
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Soumya Iyer
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Shubhadeep Banerjee
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Rogerio I. Neves
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033,Department of Dermatology and The Pennsylvania State University College of Medicine, Hershey, PA 17033 The Pennsylvania State University College of Medicine, Hershey, PA 17033,Department of Surgery The Pennsylvania State University College of Medicine, Hershey, PA 17033,The Penn State Melanoma and Skin Cancer Center The Pennsylvania State University College of Medicine, Hershey, PA 17033,Penn State Melanoma Therapeutics Program The Pennsylvania State University College of Medicine, Hershey, PA 17033,Foreman Foundation for Melanoma Research The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Colette R. Pameijer
- Department of Surgery The Pennsylvania State University College of Medicine, Hershey, PA 17033,The Penn State Melanoma and Skin Cancer Center The Pennsylvania State University College of Medicine, Hershey, PA 17033,Penn State Melanoma Therapeutics Program The Pennsylvania State University College of Medicine, Hershey, PA 17033
| | - Gavin P. Robertson.
- Department of Pharmacology The Pennsylvania State University College of Medicine, Hershey, PA 17033,Department of Pathology The Pennsylvania State University College of Medicine, Hershey, PA 17033,Department of Dermatology and The Pennsylvania State University College of Medicine, Hershey, PA 17033 The Pennsylvania State University College of Medicine, Hershey, PA 17033,Department of Surgery The Pennsylvania State University College of Medicine, Hershey, PA 17033,The Penn State Melanoma and Skin Cancer Center The Pennsylvania State University College of Medicine, Hershey, PA 17033,Penn State Melanoma Therapeutics Program The Pennsylvania State University College of Medicine, Hershey, PA 17033,Foreman Foundation for Melanoma Research The Pennsylvania State University College of Medicine, Hershey, PA 17033
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14
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Gowda R, Inamdar GS, Kuzu O, Dinavahi SS, Krzeminski J, Battu MB, Voleti SR, Amin S, Robertson GP. Identifying the structure-activity relationship of leelamine necessary for inhibiting intracellular cholesterol transport. Oncotarget 2018; 8:28260-28277. [PMID: 28423677 PMCID: PMC5438648 DOI: 10.18632/oncotarget.16002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 02/23/2017] [Indexed: 11/25/2022] Open
Abstract
Leelamine is an anticancer chemotherapeutic agent inhibiting intracellular cholesterol transport. Cell death mediated by leelamine occurs due to the lysosomotropic property of the compound, its accumulation in the lysosome, and inhibition of cholesterol transport leading to lack of availability for key processes required for functioning of cancer cells. The present study dissects the structure-activity-relationship of leelamine using synthesized derivatives of leelamine and abietic acid, a structurally similar compound, to identify the moiety responsible for anti-cancer activity. Similar to leelamine, all active derivatives had an amino group or a similar moiety that confers a lysosomotropic property to the compound enabling its accumulation in the lysosome. Active derivatives inhibited intracellular cholesterol transport and hindered xenografted melanoma tumor development without obvious systemic toxicity. In silico studies suggested that active derivatives accumulating in lysosomes bound to NPC1, a protein responsible for cholesterol export from the lysosome, to inhibit its activity that then caused accumulation, and lack of cholesterol availability for other key cellular activities. Thus, active derivatives of leelamine or abietic acid maintained lysosomotropic properties, bound to NPC1, and disrupted cellular cholesterol transport as well as availability to retard tumor development.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Foreman Foundation for Melanoma Research Laboratory, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Gajanan S Inamdar
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Omer Kuzu
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Saketh S Dinavahi
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Jacek Krzeminski
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Madhu Babu Battu
- Drug Discovery Research Laboratory, INDRAS Private Limited, Hyderabad, India 500040
| | - Sreedhara R Voleti
- Drug Discovery Research Laboratory, INDRAS Private Limited, Hyderabad, India 500040
| | - Shantu Amin
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Foreman Foundation for Melanoma Research Laboratory, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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15
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Bhullar KS, Lagarón NO, McGowan EM, Parmar I, Jha A, Hubbard BP, Rupasinghe HPV. Kinase-targeted cancer therapies: progress, challenges and future directions. Mol Cancer 2018; 17:48. [PMID: 29455673 PMCID: PMC5817855 DOI: 10.1186/s12943-018-0804-2] [Citation(s) in RCA: 687] [Impact Index Per Article: 114.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 02/01/2018] [Indexed: 02/06/2023] Open
Abstract
The human genome encodes 538 protein kinases that transfer a γ-phosphate group from ATP to serine, threonine, or tyrosine residues. Many of these kinases are associated with human cancer initiation and progression. The recent development of small-molecule kinase inhibitors for the treatment of diverse types of cancer has proven successful in clinical therapy. Significantly, protein kinases are the second most targeted group of drug targets, after the G-protein-coupled receptors. Since the development of the first protein kinase inhibitor, in the early 1980s, 37 kinase inhibitors have received FDA approval for treatment of malignancies such as breast and lung cancer. Furthermore, about 150 kinase-targeted drugs are in clinical phase trials, and many kinase-specific inhibitors are in the preclinical stage of drug development. Nevertheless, many factors confound the clinical efficacy of these molecules. Specific tumor genetics, tumor microenvironment, drug resistance, and pharmacogenomics determine how useful a compound will be in the treatment of a given cancer. This review provides an overview of kinase-targeted drug discovery and development in relation to oncology and highlights the challenges and future potential for kinase-targeted cancer therapies.
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Affiliation(s)
- Khushwant S Bhullar
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Naiara Orrego Lagarón
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Eileen M McGowan
- Chronic Disease Solutions Team, School of Life Science, University of Technology, New South Wales, Australia
| | - Indu Parmar
- Division of Product Development, Radient Technologies, Edmonton, AB, Canada
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Basil P Hubbard
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - H P Vasantha Rupasinghe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada.
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.
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16
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Kuzu OF, Gowda R, Sharma A, Noory MA, Kardos G, Madhunapantula SV, Drabick JJ, Robertson GP. Identification of WEE1 as a target to make AKT inhibition more effective in melanoma. Cancer Biol Ther 2018; 19:53-62. [PMID: 28853983 PMCID: PMC5790369 DOI: 10.1080/15384047.2017.1360446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 08/13/2017] [Accepted: 08/23/2017] [Indexed: 02/06/2023] Open
Abstract
AKT3 is one of the major therapeutic targets in melanoma but clinically targeting AKT3 alone seems to be an ineffective therapeutic approach. To identify unique strategies to enhance the efficacy of targeting AKT3, a screen was undertaken where AKT3 was co-targeted with a panel of kinases important in melanoma development. The screen identified WEE1 as the most potent target that when inhibited along with AKT3 would enhance the efficacy of targeting AKT3 in melanoma. RNAi mediated inhibition of AKT3 and WEE1 synergistically inhibited the viability of melanoma cells leading to a 65-75% decrease in tumor development. This approach was effective by mechanistically modulating pathways associated with the transcription factors p53 and FOXM1. Simultaneously regulating the activity of these two transcriptionally driven pathways, cooperatively deregulated cell cycle control and DNA damage repair to synergistically kill melanoma cells. This study uniquely identifies a potential approach to improve the efficacy of targeting AKT3 in melanoma.
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Affiliation(s)
- Omer F. Kuzu
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
| | - Raghavendra Gowda
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
- The Pennsylvania State University College of Medicine, The Melanoma and Skin Cancer Center, Hershey, PA
- The Melanoma Therapeutics Program, 500 University Drive, Hershey, PA
| | - Arati Sharma
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
| | - Mohammad A. Noory
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
| | - Gregory Kardos
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
| | | | - Joseph J. Drabick
- The Pennsylvania State University College of Medicine, Department of Medicine, Division of Hematology-Oncology, Hershey, PA
- The Pennsylvania State University College of Medicine, The Melanoma and Skin Cancer Center, Hershey, PA
- The Melanoma Therapeutics Program, 500 University Drive, Hershey, PA
| | - Gavin P. Robertson
- The Pennsylvania State University College of Medicine, Department of Pharmacology, Hershey, PA
- The Pennsylvania State University College of Medicine, Department of Pathology, Hershey, PA
- The Pennsylvania State University College of Medicine, Department of Dermatology, Hershey, PA
- The Pennsylvania State University College of Medicine, Department of Surgery, Hershey, PA
- The Pennsylvania State University College of Medicine, The Melanoma and Skin Cancer Center, Hershey, PA
- The Melanoma Therapeutics Program, 500 University Drive, Hershey, PA
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17
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Dinavahi SS, Noory MA, Gowda R, Drabick JJ, Berg A, Neves RI, Robertson GP. Moving Synergistically Acting Drug Combinations to the Clinic by Comparing Sequential versus Simultaneous Drug Administrations. Mol Pharmacol 2017; 93:190-196. [PMID: 29242354 DOI: 10.1124/mol.117.110759] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/12/2017] [Indexed: 01/21/2023] Open
Abstract
Drug combinations acting synergistically to kill cancer cells have become increasingly important in melanoma as an approach to manage the recurrent resistant disease. Protein kinase B (AKT) is a major target in this disease but its inhibitors are not effective clinically, which is a major concern. Targeting AKT in combination with WEE1 (mitotic inhibitor kinase) seems to have potential to make AKT-based therapeutics effective clinically. Since agents targeting AKT and WEE1 have been tested individually in the clinic, the quickest way to move the drug combination to patients would be to combine these agents sequentially, enabling the use of existing phase I clinical trial toxicity data. Therefore, a rapid preclinical approach is needed to evaluate whether simultaneous or sequential drug treatment has maximal therapeutic efficacy, which is based on a mechanistic rationale. To develop this approach, melanoma cell lines were treated with AKT inhibitor AZD5363 [4-amino-N-[(1S)-1-(4-chlorophenyl)-3-hydroxypropyl]-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide] and WEE1 inhibitor AZD1775 [2-allyl-1-(6-(2-hydroxypropan-2-yl)pyridin-2-yl)-6-((4-(4-methylpiperazin-1-yl)phenyl)amino)-1H-pyrazolo[3,4-d]pyrimidin-3(2H)-one] using simultaneous and sequential dosing schedules. Simultaneous treatment synergistically reduced melanoma cell survival and tumor growth. In contrast, sequential treatment was antagonistic and had a minimal tumor inhibitory effect compared with individual agents. Mechanistically, simultaneous targeting of AKT and WEE1 enhanced deregulation of the cell cycle and DNA damage repair pathways by modulating transcription factors p53 and forkhead box M1, which was not observed with sequential treatment. Thus, this study identifies a rapid approach to assess the drug combinations with a mechanistic basis for selection, which suggests that combining AKT and WEE1 inhibitors is needed for maximal efficacy.
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Affiliation(s)
- Saketh S Dinavahi
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Mohammad A Noory
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Raghavendra Gowda
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Joseph J Drabick
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Arthur Berg
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Rogerio I Neves
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gavin P Robertson
- Division of Hematology-Oncology (J.J.D.); Departments of Pharmacology (S.S.D., M.A.N., R.G., R.I.N., G.P.R.), Medicine (J.J.D.), Public Health Sciences (A.B.), Dermatology (R.I.N., G.P.R.), Surgery (R.I.N., G.P.R.), and Pathology (G.P.R.); Melanoma and Skin Cancer Center (S.S.D., M.A.N., R.G., J.J.D., A.B., R.I.N., G.P.R.); Foreman Foundation for Melanoma Research (R.G., G.P.R.); and the Melanoma Therapeutics Program (R.G., R.I.N., G.P.R.), Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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18
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Kuzu OF, Gowda R, Sharma A, Noory MA, Dinavahi SS, Kardos G, Drabick JJ, Robertson GP. Improving pharmacological targeting of AKT in melanoma. Cancer Lett 2017; 404:29-36. [PMID: 28705772 DOI: 10.1016/j.canlet.2017.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/20/2017] [Accepted: 07/04/2017] [Indexed: 11/19/2022]
Abstract
Targeting AKT with pharmacological agents inhibiting this protein in the melanoma clinic is ineffective. This is a major contradiction considering the substantial preclinical data suggesting AKT as an effective target. Various approaches have been undertaken to unravel this contradiction and drug combinations sought that could resolve this concern. We have shown that genetic targeting AKT3 or WEE1 can be effective for inhibiting tumor growth in preclinical animal models. However, no one has examined whether combining pharmacological agents targeting each of these enzymes could be more effective than inhibiting each alone and enhance the efficacy of targeting AKT in melanoma. This report shows that combining the AKT inhibitors (AZD5363 or MK1775) with the WEE1 inhibitor, AZD5363, can synergistically kill cultured melanoma cells and decrease melanoma tumor growth by greater than 90%. Co-targeting AKT and WEE1 led to enhanced deregulation of the cell cycle and DNA damage repair pathways by modulating the transcription factors p53 and FOXM1, as well as the proteins whose expression is regulated by these two proteins. Thus, this study identifies a unique combination of pharmacological agents and the ratio needed for efficacy that could be used to potentially improve the therapeutic effectiveness of targeting AKT in the clinic.
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Affiliation(s)
- Omer F Kuzu
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; The Melanoma Center, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Arati Sharma
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Mohammad A Noory
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Saketh S Dinavahi
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Gregory Kardos
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Joseph J Drabick
- Department of Medicine, Division of Hematology-Oncology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; The Melanoma Center, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; Department of Pathology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; Department of Dermatology, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA; The Melanoma Center, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA.
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19
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Thompson N, Adams DJ, Ranzani M. Synthetic lethality: emerging targets and opportunities in melanoma. Pigment Cell Melanoma Res 2017; 30:183-193. [PMID: 28097822 PMCID: PMC5396340 DOI: 10.1111/pcmr.12573] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 01/11/2017] [Indexed: 02/06/2023]
Abstract
Great progress has been made in the treatment of melanoma through use of targeted therapies and immunotherapy. One approach that has not been fully explored is synthetic lethality, which exploits somatically acquired changes, usually driver mutations, to specifically kill tumour cells. We outline the various approaches that may be applied to identify synthetic lethal interactions and define how these interactions may drive drug discovery efforts.
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Affiliation(s)
- Nicola Thompson
- Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambridgeshire, UK
| | - David J Adams
- Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambridgeshire, UK
| | - Marco Ranzani
- Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambridgeshire, UK
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20
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Madhunapantula SV, Robertson GP. Targeting protein kinase-b3 (akt3) signaling in melanoma. Expert Opin Ther Targets 2017; 21:273-290. [PMID: 28064546 DOI: 10.1080/14728222.2017.1279147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Deregulated Akt activity leading to apoptosis inhibition, enhanced proliferation and drug resistance has been shown to be responsible for 35-70% of advanced metastatic melanomas. Of the three isoforms, the majority of melanomas have elevated Akt3 expression and activity. Hence, potent inhibitors targeting Akt are urgently required, which is possible only if (a) the factors responsible for the failure of Akt inhibitors in clinical trials is known; and (b) the information pertaining to synergistically acting targeted therapeutics is available. Areas covered: This review provides a brief introduction of the PI3K-Akt signaling pathway and its role in melanoma development. In addition, the functional role of key Akt pathway members such as PRAS40, GSK3 kinases, WEE1 kinase in melanoma development are discussed together with strategies to modulate these targets. Efficacy and safety of Akt inhibitors is also discussed. Finally, the mechanism(s) through which Akt leads to drug resistance is discussed in this expert opinion review. Expert opinion: Even though Akt play key roles in melanoma tumor progression, cell survival and drug resistance, many gaps still exist that require further understanding of Akt functions, especially in the (a) metastatic spread; (b) circulating melanoma cells survival; and
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Affiliation(s)
- SubbaRao V Madhunapantula
- a Center of Excellence in Molecular Biology and Regenerative Medicine (CEMR), Department of Biochemistry , JSS Medical College, Jagadguru Sri Shivarathreeshwara University (Accredited 'A' Grade by NAAC and Ranked 35 by National Institutional Ranking Framework (NIRF)-2015, Ministry of Human Resource Development, Government of India) , Mysuru , India
| | - Gavin P Robertson
- b Department of Pharmacology , The Pennsylvania State University College of Medicine , Hershey , PA , USA.,c Department of Pathology , The Pennsylvania State University College of Medicine , Hershey , PA , USA.,d Department of Dermatology , The Pennsylvania State University College of Medicine , Hershey , PA , USA.,e Department of Surgery , The Pennsylvania State University College of Medicine , Hershey , PA , USA.,f The Melanoma Center , The Pennsylvania State University College of Medicine , Hershey , PA , USA.,g The Melanoma Therapeutics Program , The Pennsylvania State University College of Medicine , Hershey , PA , USA
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21
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Gowda R, Kardos G, Sharma A, Singh S, Robertson GP. Nanoparticle-Based Celecoxib and Plumbagin for the Synergistic Treatment of Melanoma. Mol Cancer Ther 2016; 16:440-452. [PMID: 28003325 DOI: 10.1158/1535-7163.mct-16-0285] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 11/08/2016] [Accepted: 11/23/2016] [Indexed: 12/19/2022]
Abstract
Using multiple drugs to kill cancer cells can decrease drug resistance development. However, this approach is frequently limited by the bioavailability and toxicity of the combined agents and delivery at ratios to specific locations that synergistically kill cancer cells. Loading the individual agents into a nanoparticle that releases the drugs at synergizing ratios at a single location is one approach to resolve this concern. Celecoxib and plumbagin are two drugs that were identified from a screen to synergistically kill melanoma cells compared with normal cells. Combined use of these agents by traditional approaches was not possible due to poor bioavailability and toxicologic concerns. This study details the development of a nanoliposomal-based agent containing celecoxib and plumbagin, called CelePlum-777, which is stable and releases these drugs at an optimal ratio for maximal synergistic killing efficacy. CelePlum-777 was more effective at killing melanoma than normal cells and inhibited xenograft melanoma tumor growth by up to 72% without apparent toxicity. Mechanistically, the drug combination in CelePlum-777 led to enhanced inhibition of melanoma cell proliferation mediated by decreasing levels of key cyclins important for cancer cell proliferation and survival, which was not observed with the individual agents. Thus, a novel nanoparticle-based drug has been developed containing celecoxib and plumbagin that lacks toxicity and delivers the agents at a synergistically killing drug ratio to kill cancer cells. Mol Cancer Ther; 16(3); 440-52. ©2016 AACR.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gregory Kardos
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Arati Sharma
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Sanjay Singh
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania. .,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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22
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Gowda R, Sharma A, Robertson GP. Synergistic inhibitory effects of Celecoxib and Plumbagin on melanoma tumor growth. Cancer Lett 2016; 385:243-250. [PMID: 27769779 DOI: 10.1016/j.canlet.2016.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/22/2016] [Accepted: 10/06/2016] [Indexed: 12/13/2022]
Abstract
Melanoma is a highly drug resistant cancer. To circumvent this problem, a class of synergistically acting drug combinations, which inhibit multiple key pathways in melanoma cells, could be used as one approach for long-term treatment of this deadly disease. A screen has been undertaken on cell lines to identify those that could be combined to synergistically kill melanoma cells. Plumbagin and Celecoxib are two agents that were identified to synergistically kill melanoma cells by inhibiting the COX-2 and STAT3 pathways, which are constitutively activated in up to 70% of melanomas. The combination of these two drugs was more effective at killing melanoma cells than normal cells and decreased cellular proliferation as well as induced apoptosis of cultured cells. The drug combination inhibited development of xenograft melanoma tumors by up to 63% without affecting animal weight or blood biomarkers of organ function, suggesting negligible toxicity. Mechanistically, combination of Celecoxib and Plumbagin decreased melanoma cell proliferation and retarded vascular development of tumors mediated by inhibition of COX-2 and STAT3 leading to decreased levels of key cyclins key on which melanoma cell were dependent for survival.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; The Penn State Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states
| | - Arati Sharma
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; The Penn State Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states.
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23
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The response of head and neck squamous cell carcinoma to cetuximab treatment depends on Aurora kinase A polymorphism. Oncotarget 2015; 5:5428-38. [PMID: 24980817 PMCID: PMC4170642 DOI: 10.18632/oncotarget.2117] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Objectives The aim of this study was to evaluate the efficiency of cetuximab-based anti-EGFR treatment and Aurora kinase A / B knockdown as a function of Aurora kinase polymorphism in HNSCC cell lines. Materials and methods First, protein expression of Aurora kinase A / B and EGFR and Aurora kinase A polymorphism were studied in tumour samples. The survival and proliferation of Aurora kinase A homo- (Cal27) and heterozygous (HN) HNSCC cell lines was evaluated using a colony formation assay and a flow cytometric assay. Also, aneuploidy was determined. EGFR signalling pathway were visualised by western blotting. Results Immunohistochemistry revealed the overexpression of Aurora kinase A / B in HNSCC. The knockdown of each kinase caused a significant decrease in clonogenic survival, independent of Aurora kinase A polymorphism. In contrast, cetuximab treatment impaired clonogenic survival only in the Aurora kinase A-homozygous cell line (Cal27). Conclusion This study provides in vitro evidence for the predictive value of Aurora kinase A polymorphism in the efficiency of cetuximab treatment. Resistance to cetuximab treatment can be overcome by simultaneous Aurora kinase A/B knockdown.
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24
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Phadke MS, Sini P, Smalley KSM. The Novel ATP-Competitive MEK/Aurora Kinase Inhibitor BI-847325 Overcomes Acquired BRAF Inhibitor Resistance through Suppression of Mcl-1 and MEK Expression. Mol Cancer Ther 2015; 14:1354-64. [PMID: 25873592 DOI: 10.1158/1535-7163.mct-14-0832] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 04/06/2015] [Indexed: 01/24/2023]
Abstract
Resistance to BRAF inhibitors is a major clinical problem. Here, we evaluate BI-847325, an ATP-competitive inhibitor of MEK and Aurora kinases, in treatment-naïve and drug-resistant BRAF-mutant melanoma models. BI-847325 potently inhibited growth and survival of melanoma cell lines that were both BRAF inhibitor naïve and resistant in 2D culture, 3D cell culture conditions, and in colony formation assays. Western blot studies showed BI-847325 to reduce expression of phospho-ERK and phospho-histone 3 in multiple models of vemurafenib resistance. Mechanistically, BI-847325 decreased the expression of MEK and Mcl-1 while increasing the expression of the proapoptotic protein BIM. Strong suppression of MEK expression was observed after 48 hours of treatment, with no recovery following >72 hours of washout. siRNA-mediated knockdown of Mcl-1 enhanced the effects of BI-847325, whereas Mcl-1 overexpression reversed this in both 2D cell culture and 3D spheroid melanoma models. In vivo, once weekly BI-847325 (70 mg/kg) led to durable regression of BRAF-inhibitor naïve xenografts with no regrowth seen (>65 days of treatment). In contrast, treatment with the vemurafenib analog PLX4720 was associated with tumor relapse at >30 days. BI-847325 also suppressed the long-term growth of xenografts with acquired PLX4720 resistance. Analysis of tumor samples revealed BI-847325 to induce apoptosis associated with suppression of phospho-ERK, total MEK, phospho-Histone3, and Mcl-1 expression. Our studies indicate that BI-847325 is effective in overcoming BRAF inhibitor resistance and has long-term inhibitory effects upon BRAF-mutant melanoma in vivo, through a mechanism associated with the decreased expression of both MEK and Mcl-1.
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Affiliation(s)
- Manali S Phadke
- Department of Tumor Biology, The Moffitt Cancer Center, Tampa, Florida
| | - Patrizia Sini
- Boehringer Ingelheim RCV GmbH & Co KG, Vienna, Austria
| | - Keiran S M Smalley
- Department of Tumor Biology, The Moffitt Cancer Center, Tampa, Florida. Department of Cutaneous Oncology, The Moffitt Cancer Center, Tampa, Florida.
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25
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Baldini E, Tuccilli C, Prinzi N, Sorrenti S, Falvo L, De Vito C, Catania A, Tartaglia F, Mocini R, Coccaro C, Alessandrini S, Barollo S, Mian C, Antonelli A, De Antoni E, D’Armiento M, Ulisse S. Deregulated expression of Aurora kinases is not a prognostic biomarker in papillary thyroid cancer patients. PLoS One 2015; 10:e0121514. [PMID: 25807528 PMCID: PMC4373730 DOI: 10.1371/journal.pone.0121514] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/02/2015] [Indexed: 01/08/2023] Open
Abstract
A number of reports indicated that Aurora-A or Aurora-B overexpression represented a negative prognostic factor in several human malignancies. In thyroid cancer tissues a deregulated expression of Aurora kinases has been also demonstrated, but no information regarding its possible prognostic role in differentiated thyroid cancer is available. Here, we evaluated Aurora-A and Aurora-B mRNA expression and its prognostic relevance in a series of 87 papillary thyroid cancers (PTC), with a median follow-up of 63 months. The analysis of Aurora-A and Aurora-B mRNA levels in PTC tissues, compared to normal matched tissues, revealed that their expression was either up- or down-regulated in the majority of cancer tissues. In particular, Aurora-A and Aurora-B mRNA levels were altered, respectively, in 55 (63.2%) and 79 (90.8%) out of the 87 PTC analyzed.A significant positive correlation between Aurora-A and Aurora-B mRNAs was observed (p=0.001). The expression of both Aurora genes was not affected by the BRAFV600E mutation. Univariate, multivariate and Kaplan-Mayer analyses documented the lack of association between Aurora-A or Aurora-B expression and clinicopathological parameters such as gender, age, tumor size, histology, TNM stage, lymph node metastasis and BRAF status as well as disease recurrences or disease-free interval. Only Aurora-B mRNA was significantly higher in T(3-4) tissues, with respect to T(1-2) PTC tissues. The data reported here demonstrate that the expression of Aurora kinases is deregulated in the majority of PTC tissues, likely contributing to PTC progression. However, differently from other human solid cancers, detection of Aurora-A or Aurora-B mRNAs is not a prognostic biomarker in PTC patients.
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Affiliation(s)
- Enke Baldini
- Department of Experimental Medicine, “Sapienza” University of Rome, Rome, Italy
| | - Chiara Tuccilli
- Department of Experimental Medicine, “Sapienza” University of Rome, Rome, Italy
| | - Natalie Prinzi
- Department of Experimental Medicine, “Sapienza” University of Rome, Rome, Italy
| | - Salvatore Sorrenti
- Department of Surgical Sciences, “Sapienza” University of Rome, Rome, Italy
| | - Laura Falvo
- Department of Surgical Sciences, “Sapienza” University of Rome, Rome, Italy
| | - Corrado De Vito
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, Rome, Italy
| | - Antonio Catania
- Department of Surgical Sciences, “Sapienza” University of Rome, Rome, Italy
| | | | - Renzo Mocini
- Department of Surgical Sciences, “Sapienza” University of Rome, Rome, Italy
| | - Carmela Coccaro
- Department of Experimental Medicine, “Sapienza” University of Rome, Rome, Italy
| | | | - Susi Barollo
- Department of Medicine, University of Padua, Padua, Italy
| | - Caterina Mian
- Department of Medicine, University of Padua, Padua, Italy
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Enrico De Antoni
- Department of Surgical Sciences, “Sapienza” University of Rome, Rome, Italy
| | | | - Salvatore Ulisse
- Department of Experimental Medicine, “Sapienza” University of Rome, Rome, Italy
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26
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Porcelli L, Guida G, Quatrale AE, Cocco T, Sidella L, Maida I, Iacobazzi RM, Ferretta A, Stolfa DA, Strippoli S, Guida S, Tommasi S, Guida M, Azzariti A. Aurora kinase B inhibition reduces the proliferation of metastatic melanoma cells and enhances the response to chemotherapy. J Transl Med 2015; 13:26. [PMID: 25623468 PMCID: PMC4314759 DOI: 10.1186/s12967-015-0385-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 01/08/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The poor response to chemotherapy and the brief response to vemurafenib in metastatic melanoma patients, make the identification of new therapeutic approaches an urgent need. Interestingly the increased expression and activity of the Aurora kinase B during melanoma progression suggests it as a promising therapeutic target. METHODS The efficacy of the Aurora B kinase inhibitor barasertib-HQPA was evaluated in BRAF mutated cells, sensitive and made resistant to vemurafenib after chronic exposure to the drug, and in BRAF wild type cells. The drug effectiveness has been evaluated as cell growth inhibition, cell cycle progression and cell migration. In addition, cellular effectors of drug resistance and response were investigated. RESULTS The characterization of the effectors responsible for the resistance to vemurafenib evidenced the increased expression of MITF or the activation of Erk1/2 and p-38 kinases in the newly established cell lines with a phenotype resistant to vemurafenib. The sensitivity of cells to barasertib-HQPA was irrespective of BRAF mutational status. Barasertib-HQPA induced the mitotic catastrophe, ultimately causing apoptosis and necrosis of cells, inhibited cell migration and strongly affected the glycolytic metabolism of cells inducing the release of lactate. In association i) with vemurafenib the gain in effectiveness was found only in BRAF(V600K) cells while ii) with nab-paclitaxel, the combination was more effective than each drug alone in all cells. CONCLUSIONS These findings suggest barasertib as a new therapeutic agent and as enhancer of chemotherapy in metastatic melanoma treatment.
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Affiliation(s)
- Letizia Porcelli
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Gabriella Guida
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari, P.zza Giulio Cesare, 70124, Bari, Italy.
| | - Anna E Quatrale
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Tiziana Cocco
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari, P.zza Giulio Cesare, 70124, Bari, Italy.
| | - Letizia Sidella
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Immacolata Maida
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari, P.zza Giulio Cesare, 70124, Bari, Italy.
| | - Rosa M Iacobazzi
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Anna Ferretta
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari, P.zza Giulio Cesare, 70124, Bari, Italy.
| | - Diana A Stolfa
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Sabino Strippoli
- Medical Oncology Department, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Stefania Guida
- Unit of Dermatology and Venereology, University of Bari, P.zza Giulio Cesare, 70124, Bari, Italy.
| | - Stefania Tommasi
- Molecular Genetics Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Michele Guida
- Medical Oncology Department, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
| | - Amalia Azzariti
- Clinical and Preclinical Pharmacology Laboratory, National Cancer Research Centre Istituto Tumori Giovanni Paolo II, Viale O. Flacco,65, 70124, Bari, Italy.
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27
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Knapp S, Sundström M. Recently targeted kinases and their inhibitors-the path to clinical trials. Curr Opin Pharmacol 2014; 17:58-63. [PMID: 25113945 DOI: 10.1016/j.coph.2014.07.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 07/23/2014] [Indexed: 01/08/2023]
Abstract
Protein kinases have emerged as one of the most important drug target families for the treatment of cancer. To date, 28 inhibitors with reported activity versus one or multiple kinases have been approved for clinical use. However, the majority of new clinical trials are focused on new subindications using already approved kinase inhibitors or target well validated kinase targets with novel inhibitors. In contrast, relatively few clinical trials have been initiated using specific inhibitors that inhibit novel kinase targets, despite significant validation efforts in the public domain. Analysis of the target validation history of first in class kinase inhibitors revealed a long delay between initial disease association and development of inhibitors. As part of this analysis, we have investigated which first in class inhibitor that entered phase I clinical trials over the last five years and also considered which research approaches that were used to validate them.
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Affiliation(s)
- Stefan Knapp
- Nuffield Department of Clinical Medicine, Target Discovery Institute, University of Oxford, Oxford OX3 7FZ, UK
| | - Michael Sundström
- Department of Medicine, Karolinska University Hospital and Karolinska Institutet, 171 76 Stockholm, Sweden.
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28
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Slipicevic A, Holth A, Hellesylt E, Tropé CG, Davidson B, Flørenes VA. Wee1 is a novel independent prognostic marker of poor survival in post-chemotherapy ovarian carcinoma effusions. Gynecol Oncol 2014; 135:118-24. [PMID: 25093290 DOI: 10.1016/j.ygyno.2014.07.102] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/22/2014] [Accepted: 07/28/2014] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Wee1-like kinase (Wee1) is a tyrosine kinase which negatively regulates entry into mitosis at the G2 to M-phase transition and has a role in inhibition of unscheduled DNA replication in S-phase. The present study investigated the clinical role of Wee1 in advanced-stage (FIGO III-IV) ovarian serous carcinoma. METHODS Wee1 protein expression was analyzed in 287 effusions using immunohistochemistry. Expression was analyzed for association with clinicopathologic parameters, including survival. Forty-five effusions were additionally studied using Western blotting. Wee1 was further silenced in SKOV3 and OVCAR8 cells by siRNA knockdown and proliferation was assessed. RESULTS Nuclear expression of Wee1 in tumor cells was observed in 265/287 (92%) and 45/45 (100%) effusions by immunohistochemistry and Western blotting, respectively. Wee1 expression by immunohistochemistry was significantly higher in post-chemotherapy disease recurrence compared to pre-chemotherapy effusions obtained at diagnosis (p=0.002). Wee1 silencing in SKOV3 and OVCAR8 cells reduced proliferation. In univariate survival analysis of the entire cohort, a trend was observed between high (>25% of cells) Wee1 expression and poor overall survival (p=0.083). Survival analysis for 109 patients with post-chemotherapy effusions showed significant association between Wee1 expression and poor overall survival (p=0.004), a finding which retained its independent prognostic role in Cox multivariate analysis (p=0.003). CONCLUSIONS Wee1 is frequently expressed in ovarian serous carcinoma effusions, and its expression is significantly higher following exposure to chemotherapy. The present study is the first to report that Wee1 is an independent prognostic marker in serous ovarian carcinoma.
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Affiliation(s)
- Ana Slipicevic
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway
| | - Arild Holth
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway
| | - Ellen Hellesylt
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway
| | - Claes G Tropé
- Department of Gynecologic Oncology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway; University of Oslo, Faculty of Medicine, Institute of Clinical Medicine, N-0316 Oslo, Norway
| | - Ben Davidson
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway; University of Oslo, Faculty of Medicine, Institute of Clinical Medicine, N-0316 Oslo, Norway.
| | - Vivi Ann Flørenes
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway
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29
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Gowda R, Madhunapantula SV, Kuzu OF, Sharma A, Robertson GP. Targeting multiple key signaling pathways in melanoma using leelamine. Mol Cancer Ther 2014; 13:1679-89. [PMID: 24688050 DOI: 10.1158/1535-7163.mct-13-0867] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Melanoma is a highly drug-resistant cancer with resistance developing to agents targeting single proteins. To circumvent this problem, a new class of agent inhibiting multiple key pathways important in this disease is being developed to reduce the likelihood of developing resistant disease. The phosphoinositide 3-kinase (PI3K), mitogen-activated protein kinase (MAPK), and STAT3 pathways are constitutively activated in 50% to 70% of melanomas, promoting disease development. To identify a drug simultaneously targeting the PI3K, MAPK, and STAT3 cascades, a natural product library was screened to identify leelamine as a potential inhibitor. Leelamine was 4.5-fold more effective at inhibiting cultured melanoma cell survival than normal cells, with average IC(50) values of 2 and 9.3 μmol/L, respectively. It inhibited cellular proliferation at a concentration of 2.5 μmol/L by 40% to 80% and longer exposure increased apoptosis 600%. Leelamine inhibited the growth of preexisting xenografted melanoma tumors by an average of 60% by targeting the PI3K, MAPK, and STAT3 pathways without affecting animal body weight or blood markers of major organ function. The mechanism of action of leelamine is mediated by disruption of cholesterol transport, causing decreased cellular proliferation and consequently leading to increased tumor cell apoptosis as well as decreased tumor vascularization. Thus, a unique agent and novel mechanism of action has been identified for the treatment of melanoma that acts by inhibiting the activity of three major signaling pathways regulating the development of this disease.
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Affiliation(s)
- Raghavendra Gowda
- Authors' Affiliations: Departments of Pharmacology, Penn State Hershey Melanoma Center, Penn State Melanoma Therapeutics Program
| | | | - Omer F Kuzu
- Authors' Affiliations: Departments of Pharmacology, Penn State Hershey Melanoma Center
| | - Arati Sharma
- Authors' Affiliations: Departments of Pharmacology, Penn State Hershey Melanoma Center, Penn State Melanoma Therapeutics Program
| | - Gavin P Robertson
- Authors' Affiliations: Departments of Pharmacology, Pathology, Dermatology, and Surgery, Penn State Hershey Melanoma Center, Penn State Melanoma Therapeutics Program, The Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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Madhunapantula SV, Sharma A, Gowda R, Robertson GP. Identification of glycogen synthase kinase 3α as a therapeutic target in melanoma. Pigment Cell Melanoma Res 2013; 26:886-99. [PMID: 24034838 DOI: 10.1111/pcmr.12156] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 08/05/2013] [Indexed: 12/14/2022]
Abstract
Deregulated expression or activity of kinases can lead to melanomas, but often the particular kinase isoform causing the effect is not well established, making identification and validation of different isoforms regulating disease development especially important. To accomplish this objective, an siRNA screen was undertaken that which identified glycogen synthase kinase 3α (GSK3α) as an important melanoma growth regulator. Melanocytes and melanoma cell lines representing various stages of melanoma tumor progression expressed both GSK3α and GSK3β, but analysis of tumors in patients with melanoma showed elevated expression of GSK3α in 72% of samples, which was not observed for GSK3β. Furthermore, 80% of tumors in patients with melanoma expressed elevated levels of catalytically active phosphorylated GSK3α (pGSK3αY279), but not phosphorylated GSK3β (pGSK3βY216). siRNA-mediated reduction in GSK3α protein levels reduced melanoma cell survival and proliferation, sensitized cells to apoptosis-inducing agents and decreased xenografted tumor development by up to 56%. Mechanistically, inhibiting GSK3α expression using siRNA or the pharmacological agent AR-A014418 arrested melanoma cells in the G0/G1 phase of the cell cycle and induced apoptotic death to retard tumorigenesis. Therefore, GSK3α is a key therapeutic target in melanoma.
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Affiliation(s)
- SubbaRao V Madhunapantula
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA, USA; Penn State Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA, USA; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA, USA
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Gowda R, Jones NR, Banerjee S, Robertson GP. Use of Nanotechnology to Develop Multi-Drug Inhibitors For Cancer Therapy. ACTA ACUST UNITED AC 2013; 4. [PMID: 25013742 PMCID: PMC4085796 DOI: 10.4172/2157-7439.1000184] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Therapeutic agents that inhibit a single target often cannot combat a multifactorial disease such as cancer. Thus, multi-target inhibitors (MTIs) are needed to circumvent complications such as the development of resistance. There are two predominant types of MTIs, (a) single drug inhibitor (SDIs) that affect multiple pathways simultaneously, and (b) combinatorial agents or multi-drug inhibitors (MDIs) that inhibit multiple pathways. Single agent multi-target kinase inhibitors are amongst the most prominent class of compounds belonging to the former, whereas the latter includes many different classes of combinatorial agents that have been used to achieve synergistic efficacy against cancer. Safe delivery and accumulation at the tumor site is of paramount importance for MTIs because inhibition of multiple key signaling pathways has the potential to lead to systemic toxicity. For this reason, the development of drug delivery mechanisms using nanotechnology is preferable in order to ensure that the MDIs accumulate in the tumor vasculature, thereby increasing efficacy and minimizing off-target and systemic side effects. This review will discuss how nanotechnology can be used for the development of MTIs for cancer therapy and also it concludes with a discussion of the future of nanoparticle-based MTIs as well as the continuing obstacles being faced during the development of these unique agents.’
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Hershey Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; The Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Nathan R Jones
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Shubhadeep Banerjee
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Hershey Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Hershey Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA ; The Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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