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Silver KI, Mannheimer JD, Saba C, Hendricks WPD, Wang G, Day K, Warrier M, Beck JA, Mazcko C, LeBlanc AK. Clinical, pathologic and molecular findings in 2 Rottweiler littermates with appendicular osteosarcoma. Res Sq 2024:rs.3.rs-4223759. [PMID: 38659878 PMCID: PMC11042397 DOI: 10.21203/rs.3.rs-4223759/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Appendicular osteosarcoma was diagnosed and treated in a pair of littermate Rottweiler dogs, resulting in distinctly different clinical outcomes despite similar therapy within the context of a prospective, randomized clinical trial (NCI-COTC021/022). Histopathology, immunohistochemistry, mRNA sequencing, and targeted DNA hotspot sequencing techniques were applied to both dogs' tumors to define factors that could underpin their differential response to treatment. We describe the comparison of their clinical, histologic and molecular features, as well as those from a companion cohort of Rottweiler dogs, providing new insight into potential prognostic biomarkers for canine osteosarcoma.
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2
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Zakimi N, Mazcko CN, Toedebusch C, Tawa G, Woolard K, LeBlanc AK, Dickinson PJ, Raleigh DR. Canine meningiomas are comprised of 3 DNA methylation groups that resemble the molecular characteristics of human meningiomas. Acta Neuropathol 2024; 147:43. [PMID: 38376604 PMCID: PMC10879255 DOI: 10.1007/s00401-024-02693-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/20/2024] [Accepted: 01/21/2024] [Indexed: 02/21/2024]
Affiliation(s)
- Naomi Zakimi
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA
| | - Christina N Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Christine Toedebusch
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Gregory Tawa
- Therapeutic Development Branch, Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, USA
| | - Kevin Woolard
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Peter J Dickinson
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - David R Raleigh
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA.
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, USA.
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA.
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3
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Silver KI, Patkar S, Mazcko C, Berger EP, Beck JA, LeBlanc AK. Patterns of metastatic progression and association with clinical outcomes in canine osteosarcoma: A necropsy study of 83 dogs. Vet Comp Oncol 2023; 21:646-655. [PMID: 37592810 PMCID: PMC10842475 DOI: 10.1111/vco.12927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/19/2023]
Abstract
Osteosarcoma is a highly metastatic primary bone tumour that occurs spontaneously in both pet dogs and humans. Patterns of metastasis to organs beyond the most common site (lung) are poorly characterised and it is unknown whether specific associations between patterns of metastatic progression and patient features exist. This retrospective study characterised the necropsy findings of 83 dogs receiving standardised therapy and clinical monitoring in a prospective clinical trial setting to document patterns of metastasis and correlate outcomes with these patterns and other patient and tumour-specific factors. A total of 20 different sites of metastasis were documented, with lung as the most common site, followed by bone, kidney, liver, and heart. Two distinct clusters of dogs were identified based on patterns of metastasis. There was no significant association between site of enrollment, trial arm, sex, serum alkaline phosphatase (ALP) activity, or tumour location and clinical outcomes. A second cancer type was identified at necropsy in 10 dogs (10/83; 12%). These data showcase the extensive nature of osteosarcoma metastasis beyond the lung and provide a benchmark for clinical monitoring of the disease. Further, this study provides insight into transcriptional features of primary tumours that may relate to a propensity for osteosarcoma metastasis to specific organs and tissues.
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Affiliation(s)
- K I Silver
- Comparative Oncology Program, Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - S Patkar
- Artificial Intelligence Resource, Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - C Mazcko
- Comparative Oncology Program, Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - E P Berger
- Frederick National Laboratory for Cancer Research in the Comparative Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - J A Beck
- Comparative Oncology Program, Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - A K LeBlanc
- Comparative Oncology Program, Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
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4
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Wei AZ, Chen LN, Orloff M, Ariyan CE, Asgari M, Barker CA, Buchbinder E, Chandra S, Couts K, Frumovitz MM, Futreal A, Gershenwald JE, Hanna EY, Izar B, LeBlanc AK, Leitao MM, Lipson EJ, Liu D, McCarter M, McQuade JL, Najjar Y, Rapisuwon S, Selig S, Shoushtari AN, Yeh I, Schwartz GK, Guo J, Patel SP, Carvajal RD. Proceedings from the Melanoma Research Foundation Mucosal Melanoma Meeting (December 16, 2022, New York, USA). Pigment Cell Melanoma Res 2023; 36:542-556. [PMID: 37804122 DOI: 10.1111/pcmr.13139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/01/2023] [Accepted: 09/23/2023] [Indexed: 10/08/2023]
Abstract
Mucosal melanoma remains a rare cancer with high mortality and a paucity of therapeutic options. This is due in significant part to its low incidence leading to limited patient access to expert care and downstream clinical/basic science data for research interrogation. Clinical challenges such as delayed and at times inaccurate diagnoses, and lack of consensus tumor staging have added to the suboptimal outcomes for these patients. Clinical trials, while promising, have been difficult to activate and accrue. While individual institutions and investigators have attempted to seek solutions to such problems, international, national, and local partnership may provide the keys to more efficient and innovative paths forward. Furthermore, a mucosal melanoma coalition would provide a potential network for patients and caregivers to seek expert opinion and advice. The Melanoma Research Foundation Mucosal Melanoma Meeting (December 16, 2022, New York, USA) highlighted the current clinical challenges faced by patients, providers, and scientists, identified current and future clinical trial investigations in this rare disease space, and aimed to increase national and international collaboration among the mucosal melanoma community in an effort to improve patient outcomes. The included proceedings highlight the clinical challenges of mucosal melanoma, global clinical trial experience, basic science advances in mucosal melanoma, and future directions, including the creation of shared rare tumor registries and enhanced collaborations.
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Affiliation(s)
- Alexander Z Wei
- Columbia University Irving Medical Center, New York, New York, USA
| | - Lanyi N Chen
- Columbia University Irving Medical Center, New York, New York, USA
| | - Marlana Orloff
- Thomas Jefferson University Sidney Kimmel Cancer Center, Philadelphia, Pennsylvania, USA
| | | | | | | | | | - Sunandana Chandra
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Kasey Couts
- University of Colorado School of Medicine, Aurora, Colorado, USA
| | | | - Andrew Futreal
- The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Ehab Y Hanna
- The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Benjamin Izar
- Columbia University Irving Medical Center, New York, New York, USA
| | - Amy K LeBlanc
- National Institute of Health, Bethesda, Maryland, USA
| | - Mario M Leitao
- Memorial Sloan Kettering Cancer Center, New York, New York, USA
- Department of Obstetrics and Gynecology, Weill Cornell Medical College, New York, New York, USA
| | - Evan J Lipson
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David Liu
- Dana-Farber Cancer Institute/Harvard Cancer Center, Boston, Massachusetts, USA
| | - Martin McCarter
- University of Colorado School of Medicine, Aurora, Colorado, USA
| | | | - Yana Najjar
- University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
| | | | - Sara Selig
- Melanoma Research Foundation, CURE OM, Washington, DC, USA
| | | | - Iwei Yeh
- University of California, San Francisco, San Francisco, California, USA
| | | | - Jun Guo
- Peking University Cancer Hospital & Institute, Beijing, China
| | - Sapna P Patel
- The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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5
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Huang S, Ren L, Beck JA, Phelps TE, Olkowski C, Ton A, Roy J, White ME, Adler S, Wong K, Cherukuri A, Zhang X, Basuli F, Choyke PL, Jagoda EM, LeBlanc AK. Exploration of Imaging Biomarkers for Metabolically-Targeted Osteosarcoma Therapy in a Murine Xenograft Model. Cancer Biother Radiopharm 2023; 38:475-485. [PMID: 37253167 PMCID: PMC10623067 DOI: 10.1089/cbr.2022.0090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Background: Osteosarcoma (OS) is an aggressive pediatric cancer with unmet therapeutic needs. Glutaminase 1 (GLS1) inhibition, alone and in combination with metformin, disrupts the bioenergetic demands of tumor progression and metastasis, showing promise for clinical translation. Materials and Methods: Three positron emission tomography (PET) clinical imaging agents, [18F]fluoro-2-deoxy-2-D-glucose ([18F]FDG), 3'-[18F]fluoro-3'-deoxythymidine ([18F]FLT), and (2S, 4R)-4-[18F]fluoroglutamine ([18F]GLN), were evaluated in the MG63.3 human OS xenograft mouse model, as companion imaging biomarkers after treatment for 7 d with a selective GLS1 inhibitor (CB-839, telaglenastat) and metformin, alone and in combination. Imaging and biodistribution data were collected from tumors and reference tissues before and after treatment. Results: Drug treatment altered tumor uptake of all three PET agents. Relative [18F]FDG uptake decreased significantly after telaglenastat treatment, but not within control and metformin-only groups. [18F]FLT tumor uptake appears to be negatively affected by tumor size. Evidence of a flare effect was seen with [18F]FLT imaging after treatment. Telaglenastat had a broad influence on [18F]GLN uptake in tumor and normal tissues. Conclusions: Image-based tumor volume quantification is recommended for this paratibial tumor model. The performance of [18F]FLT and [18F]GLN was affected by tumor size. [18F]FDG may be useful in detecting telaglenastat's impact on glycolysis. Exploration of kinetic tracer uptake protocols is needed to define clinically relevant patterns of [18F]GLN uptake in patients receiving telaglenastat.
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Affiliation(s)
- Shan Huang
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Ling Ren
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jessica A. Beck
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Tim E. Phelps
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Colleen Olkowski
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Anita Ton
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jyoti Roy
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Margaret E. White
- Laboratory of Genitourinary Cancer Pathogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Stephen Adler
- Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Maryland, USA
| | - Karen Wong
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Aswini Cherukuri
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Xiang Zhang
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Falguni Basuli
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter L. Choyke
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Elaine M. Jagoda
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Amy K. LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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Mannheimer JD, Tawa G, Gerhold D, Braisted J, Sayers CM, McEachron TA, Meltzer P, Mazcko C, Beck JA, LeBlanc AK. Transcriptional profiling of canine osteosarcoma identifies prognostic gene expression signatures with translational value for humans. Commun Biol 2023; 6:856. [PMID: 37591946 PMCID: PMC10435536 DOI: 10.1038/s42003-023-05208-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 08/03/2023] [Indexed: 08/19/2023] Open
Abstract
Canine osteosarcoma is increasingly recognized as an informative model for human osteosarcoma. Here we show in one of the largest clinically annotated canine osteosarcoma transcriptional datasets that two previously reported, as well as de novo gene signatures devised through single sample Gene Set Enrichment Analysis (ssGSEA), have prognostic utility in both human and canine patients. Shared molecular pathway alterations are seen in immune cell signaling and activation including TH1 and TH2 signaling, interferon signaling, and inflammatory responses. Virtual cell sorting to estimate immune cell populations within canine and human tumors showed similar trends, predominantly for macrophages and CD8+ T cells. Immunohistochemical staining verified the increased presence of immune cells in tumors exhibiting immune gene enrichment. Collectively these findings further validate naturally occurring osteosarcoma of the pet dog as a translationally relevant patient model for humans and improve our understanding of the immunologic and genomic landscape of the disease in both species.
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Affiliation(s)
- Joshua D Mannheimer
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Gregory Tawa
- Division of Preclinical Innovation, Therapeutic Development Branch, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - David Gerhold
- Division of Preclinical Innovation, Therapeutic Development Branch, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - John Braisted
- Division of Preclinical Innovation, Therapeutic Development Branch, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Carly M Sayers
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Troy A McEachron
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Paul Meltzer
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jessica A Beck
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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7
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LeBlanc AK, Mazcko CN, Fan TM, Vail DM, Flesner BK, Bryan JN, Li S, Wang F, Harris S, Vargas JD, Govindharajulu JP, Jaganathan S, Tomaino F, Srivastava AK, Chou TF, Stott GM, Covey JM, Mroczkowski B, Doroshow JH. Comparative oncology assessment of a novel inhibitor of valosin-containing protein in tumor-bearing dogs. Mol Cancer Ther 2022; 21:1510-1523. [PMID: 35876604 DOI: 10.1158/1535-7163.mct-22-0167] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/09/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
Pet dogs with naturally-occurring cancers play an important role in studies of cancer biology and drug development. We assessed tolerability, efficacy and pharmacokinetic/pharmacodynamic (PK/PD) relationships with a first-in-class small molecule inhibitor of valosin-containing protein (VCP/p97), CB-5339, administered to 24 tumor-bearing pet dogs. Tumor types assessed included solid malignancies, lymphomas, and multiple myeloma. Through a stepwise dose and schedule escalation schema, we determined the maximum tolerated dose to be 7.5 mg/kg when administered orally on a 4-days on, 3-days off schedule per week for 3 consecutive weeks. Adverse events were minimal and mainly related to the gastrointestinal system. PK/PD data suggests a relationship between exposure and modulation of targets related to induction of the unfolded protein response, but not to tolerability of the agent. An efficacy signal was detected in 33% (2/6) dogs with multiple myeloma, consistent with a mechanism of action relating to induction of proteotoxic stress in a tumor type with abundant protein production. Clinical trials of CB-5339 in humans with acute myelogenous leukemia and multiple myeloma are ongoing.
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Affiliation(s)
- Amy K LeBlanc
- National Cancer Institute, Bethesda, Maryland, United States
| | | | - Timothy M Fan
- University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - David M Vail
- University of Wisconsin-Madison, Madison, WI, United States
| | - Brian K Flesner
- University of Missouri - College of Veterinary Medicine, Columbia, MO, United States
| | | | - Shan Li
- California Institute of Technology, Pasadena, CA, United States
| | - Feng Wang
- California Institute of Technology, Pasadena, CA, United States
| | - Scott Harris
- Cleave Therapeutics, Inc., San Francisco, CA, United States
| | | | - Jeevan P Govindharajulu
- Frederick National Laboratory of Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, United States
| | - Soumya Jaganathan
- Frederick National Laboratory of Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, United States
| | - Francesca Tomaino
- Frederick National Laboratory of Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, United States
| | - Apurva K Srivastava
- Frederick National Laboratory of Cancer Research, Leidos Biomedical Research, Inc., Frederick, United States
| | - Tsui-Fen Chou
- California Institute of Technology, Pasadena, CA, United States
| | - Gordon M Stott
- Frederick National Laboratory for Cancer Research, Frederick, United States
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8
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Tonogai EJ, Huang S, Botham RC, Berry MR, Joslyn SK, Daniel GB, Chen Z, Rao J, Zhang X, Basuli F, Rossmeisl JH, Riggins GJ, LeBlanc AK, Fan TM, Hergenrother PJ. Evaluation of a procaspase-3 activator with hydroxyurea or temozolomide against high-grade meningioma in cell culture and canine cancer patients. Neuro Oncol 2021; 23:1723-1735. [PMID: 34216463 PMCID: PMC8485451 DOI: 10.1093/neuonc/noab161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND High-grade meningioma is an aggressive type of brain cancer that is often recalcitrant to surgery and radiotherapy, leading to poor overall survival. Currently, there are no FDA-approved drugs for meningioma, highlighting the need for new therapeutic options, but development is challenging due to the lack of predictive preclinical models. METHODS To leverage the known overexpression of procaspase-3 in meningioma, PAC-1, a blood-brain barrier penetrant procaspase-3 activator, was evaluated for its ability to induce apoptosis in meningioma cells. To enhance the effects of PAC-1, combinations with either hydroxyurea or temozolomide were explored in cell culture. Both combinations were further investigated in small groups of canine meningioma patients and assessed by MRI, and the novel apoptosis tracer, [18F]C-SNAT4, was evaluated in patients treated with PAC-1 + HU. RESULTS In meningioma cell lines in culture, PAC-1 + HU are synergistic while PAC-1 + TMZ show additive-to-synergistic effects. In canine meningioma patients, PAC-1 + HU led to stabilization of disease and no change in apoptosis within the tumor, whereas PAC-1 + TMZ reduced tumor burden in all three canine patients treated. CONCLUSIONS Our results suggest PAC-1 + TMZ as a potentially efficacious combination for the treatment of human meningioma, and also demonstrate the utility of including pet dogs with meningioma as a means to assess anticancer strategies for this common brain tumor.
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Affiliation(s)
- Emily J Tonogai
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Shan Huang
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Rachel C Botham
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Matthew R Berry
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - Gregory B Daniel
- Radiology, Department of Small Animal Clinical Sciences, Virgina-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Zixin Chen
- Departments of Radiology and Chemistry, Stanford Medicine, Stanford, California, USA
| | - Jianghong Rao
- Departments of Radiology and Chemistry, Stanford Medicine, Stanford, California, USA
| | - Xiang Zhang
- Chemistry and Synthesis Center, NHLBI, NIH, Bethesda, Maryland, USA
| | - Falguni Basuli
- Chemistry and Synthesis Center, NHLBI, NIH, Bethesda, Maryland, USA
| | - John H Rossmeisl
- Neurology and Neurosurgery, Department of Small Animal Clinical Sciences, Virgina-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Gregory J Riggins
- Department of Neurosurgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Amy K LeBlanc
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Timothy M Fan
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Paul J Hergenrother
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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9
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LeBlanc AK, Mazcko CN, Cherukuri A, Berger EP, Kisseberth WC, Brown ME, Lana SE, Weishaar K, Flesner BK, Bryan JN, Vail DM, Burton JH, Willcox JL, Mutsaers AJ, Woods JP, Northrup NC, Saba C, Curran KM, Leeper H, Wilson-Robles H, Wustefeld-Janssens BG, Lindley S, Smith AN, Dervisis N, Klahn S, Higginbotham ML, Wouda RM, Krick E, Mahoney JA, London CA, Barber LG, Balkman CE, McCleary-Wheeler AL, Suter SE, Martin O, Borgatti A, Burgess K, Childress MO, Fidel JL, Allstadt SD, Gustafson DL, Selmic LE, Khanna C, Fan TM. Adjuvant Sirolimus Does Not Improve Outcome in Pet Dogs Receiving Standard-of-Care Therapy for Appendicular Osteosarcoma: A Prospective, Randomized Trial of 324 Dogs. Clin Cancer Res 2021; 27:3005-3016. [PMID: 33753454 DOI: 10.1158/1078-0432.ccr-21-0315] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/24/2021] [Accepted: 03/18/2021] [Indexed: 12/31/2022]
Abstract
PURPOSE The mTOR pathway has been identified as a key nutrient signaling hub that participates in metastatic progression of high-grade osteosarcoma. Inhibition of mTOR signaling is biologically achievable with sirolimus, and might slow the outgrowth of distant metastases. In this study, pet dogs with appendicular osteosarcoma were leveraged as high-value biologic models for pediatric osteosarcoma, to assess mTOR inhibition as a therapeutic strategy for attenuating metastatic disease progression. PATIENTS AND METHODS A total of 324 pet dogs diagnosed with treatment-naïve appendicular osteosarcoma were randomized into a two-arm, multicenter, parallel superiority trial whereby dogs received amputation of the affected limb, followed by adjuvant carboplatin chemotherapy ± oral sirolimus therapy. The primary outcome measure was disease-free interval (DFI), as assessed by serial physical and radiologic detection of emergent macroscopic metastases; secondary outcomes included overall 1- and 2-year survival rates, and sirolimus pharmacokinetic variables and their correlative relationship to adverse events and clinical outcomes. RESULTS There was no significant difference in the median DFI or overall survival between the two arms of this trial; the median DFI and survival for standard-of-care (SOC; defined as amputation and carboplatin therapy) dogs was 180 days [95% confidence interval (CI), 144-237] and 282 days (95% CI, 224-383) and for SOC + sirolimus dogs, it was 204 days (95% CI, 157-217) and 280 days (95% CI, 252-332), respectively. CONCLUSIONS In a population of pet dogs nongenomically segmented for predicted mTOR inhibition response, sequentially administered adjuvant sirolimus, although well tolerated when added to a backbone of therapy, did not extend DFI or survival in dogs with appendicular osteosarcoma.
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Affiliation(s)
- Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.
| | - Christina N Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Aswini Cherukuri
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Erika P Berger
- Frederick National Laboratory for Cancer Research in the Comparative Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - William C Kisseberth
- Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, Ohio
| | - Megan E Brown
- Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, Ohio
| | - Susan E Lana
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Kristen Weishaar
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Brian K Flesner
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri
| | - Jeffrey N Bryan
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri
| | - David M Vail
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jenna H Burton
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California
| | - Jennifer L Willcox
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California
| | - Anthony J Mutsaers
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - J Paul Woods
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Nicole C Northrup
- Department of Small Animal Medicine & Surgery, College of Veterinary Medicine University of Georgia, Athens, Georgia
| | - Corey Saba
- Department of Small Animal Medicine & Surgery, College of Veterinary Medicine University of Georgia, Athens, Georgia
| | - Kaitlin M Curran
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, Oregon
| | - Haley Leeper
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, Oregon
| | - Heather Wilson-Robles
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Brandan G Wustefeld-Janssens
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Stephanie Lindley
- Department of Clinical Sciences, Wilford and Kate Bailey Small Animal Teaching Hospital, Auburn University College of Veterinary Medicine, Auburn, Alabama
| | - Annette N Smith
- Department of Clinical Sciences, Wilford and Kate Bailey Small Animal Teaching Hospital, Auburn University College of Veterinary Medicine, Auburn, Alabama
| | - Nikolaos Dervisis
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, Virginia.,ICATS Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, Virginia.,Department of Internal Medicine, Virginia Tech Carilion School of Medicine, Roanoke, Virginia
| | - Shawna Klahn
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, Virginia
| | - Mary Lynn Higginbotham
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
| | - Raelene M Wouda
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
| | - Erika Krick
- Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jennifer A Mahoney
- Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Cheryl A London
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - Lisa G Barber
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - Cheryl E Balkman
- Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Angela L McCleary-Wheeler
- Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Steven E Suter
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Olya Martin
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Antonella Borgatti
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
| | - Kristine Burgess
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - Michael O Childress
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana
| | - Janean L Fidel
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington
| | - Sara D Allstadt
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Daniel L Gustafson
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Laura E Selmic
- Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, Ohio
| | - Chand Khanna
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.,Ethos Veterinary Health, Woburn, Massachusetts.,Ethos Discovery, San Diego, California
| | - Timothy M Fan
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois. .,Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois
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10
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Phelps TE, Roy J, Green MV, Seidel J, Baidoo KE, Adler S, Edmondson EF, Butcher D, Matta JL, Ton AT, Wong K, Huang S, Ren L, LeBlanc AK, Choyke PL, Jagoda EM. Sodium Fluoride-18 and Radium-223 Dichloride Uptake Colocalize in Osteoblastic Mouse Xenograft Tumors. Cancer Biother Radiopharm 2021; 36:133-142. [PMID: 33646017 DOI: 10.1089/cbr.2020.4068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background: Patients with osteoblastic bone metastases are candidates for radium-223 (223RaCl2) therapy and may undergo sodium fluoride-18 (18F-NaF) positron emission tomography-computed tomography imaging to identify bone lesions. 18F-NaF has been shown to predict 223RaCl2 uptake, but intratumor distributions of these two agents remain unclear. In this study, the authors evaluate the spatial distribution and relative uptakes of 18F-NaF and 223RaCl2 in Hu09-H3 human osteosarcoma mouse xenograft tumors at macroscopic and microscopic levels to better quantify their correlation. Materials and Methods: 18F-NaF and 223RaCl2 were co-injected into Hu09-H3 xenograft tumor severe combined immunodeficient mice. Tumor content was determined from in vivo biodistributions and visualized by PET, single photon emission computed tomography, and CT imaging. Intratumor distributions were visualized by quantitative autoradiography of tumor tissue sections and compared to histology of the same or adjacent sections. Results: 18F and 223Ra accumulated in proportional amounts in whole Hu09-H3 tumors (r2 = 0.82) and in microcalcified regions within these tumors (r2 = 0.87). Intratumor distributions of 18F and 223Ra were spatially congruent in these microcalcified regions. Conclusions: 18F-NaF and 223RaCl2 uptake are strongly correlated in heterogeneously distributed microcalcified regions of Hu09-H3 xenograft tumors, and thus, tumor accumulation of 18F is predictive of 223Ra accumulation. Hu09-H3 xenograft tumors appear to possess certain histopathological features found in patients with metastatic bone disease and may be useful in clarifying the relationship between administered 223Ra dose and therapeutic effect.
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Affiliation(s)
- Tim E Phelps
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jyoti Roy
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Michael V Green
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.,Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Maryland, USA
| | - Jurgen Seidel
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.,Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Maryland, USA
| | - Kwamena E Baidoo
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Stephen Adler
- Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Maryland, USA
| | - Elijah F Edmondson
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, NCI, Frederick, Maryland, USA
| | - Donna Butcher
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, NCI, Frederick, Maryland, USA
| | - Jennifer L Matta
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, NCI, Frederick, Maryland, USA
| | - Anita T Ton
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Karen Wong
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Shan Huang
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Ling Ren
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Amy K LeBlanc
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter L Choyke
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Elaine M Jagoda
- Molecular Imaging Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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11
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LeBlanc AK, Atherton M, Bentley RT, Boudreau CE, Burton JH, Curran KM, Dow S, Giuffrida MA, Kellihan HB, Mason NJ, Oblak M, Selmic LE, Selting KA, Singh A, Tjostheim S, Vail DM, Weishaar KM, Berger EP, Rossmeisl JH, Mazcko C. Veterinary Cooperative Oncology Group-Common Terminology Criteria for Adverse Events (VCOG-CTCAE v2) following investigational therapy in dogs and cats. Vet Comp Oncol 2021; 19:311-352. [PMID: 33427378 PMCID: PMC8248125 DOI: 10.1111/vco.12677] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/07/2021] [Accepted: 01/07/2021] [Indexed: 11/26/2022]
Abstract
The updated VCOG-CTCAE v2 guidelines contain several important updates and additions since the last update (v1.1) was released in 2011 and published within Veterinary and Comparative Oncology in 2016. As the Veterinary Cooperative Oncology Group (VCOG) is no longer an active entity, the original authors and contributors to the VCOG-CTCAE v1.0 and v1.1 were consulted for input, and additional co-authors sought for expansion and refinement of the adverse event (AE) categories. VCOG-CTCAE v2 includes expanded neurology, cardiac and immunologic AE sections, and the addition of procedural-specific AEs. It is our intent that, through inclusion of additional authors from ACVIM subspecialties and the American College of Veterinary Surgery, that we can more comprehensively capture AEs that are observed during clinical studies conducted across a variety of disease states, clinical scenarios, and body systems. It is also our intent that these updated veterinary CTCAE guidelines will offer improved application and ease of use within veterinary practice in general, as well as within clinical trials that assess new therapeutic strategies for animals with a variety of diseases. Throughout the revision process, we strived to ensure the grading structure for each AE category was reflective of the decision-making process applied to determination of dose-limiting events. As phase I trial decisions are based on these criteria and ultimately determine the maximally tolerated dose, there is impact on standard dosing recommendations for any new drug registration or application. This document should be updated regularly to reflect ongoing application to clinical studies carried out in veterinary patients.
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Affiliation(s)
- Amy K LeBlanc
- National Cancer Institute, National Institutes of Health, Comparative Oncology Program, Center for Cancer Research, Bethesda, Maryland, USA
| | - Matthew Atherton
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - R Timothy Bentley
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, Indiana, USA.,Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA
| | - C Elizabeth Boudreau
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Jenna H Burton
- Animal Cancer Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Ft. Collins, Colorado, USA
| | - Kaitlin M Curran
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, Oregon, USA
| | - Steven Dow
- Animal Cancer Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Ft. Collins, Colorado, USA
| | - Michelle A Giuffrida
- Department of Surgical and Radiological Sciences, Davis School of Veterinary Medicine, University of California, Davis, California, USA
| | - Heidi B Kellihan
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Nicola J Mason
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Parker Institute for Cancer Immunotherapy, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Michelle Oblak
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Laura E Selmic
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Kimberly A Selting
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Ameet Singh
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Sonja Tjostheim
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - David M Vail
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Kristen M Weishaar
- Animal Cancer Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Ft. Collins, Colorado, USA
| | - Erika P Berger
- Frederick National Laboratory for Cancer Research in the Comparative Oncology Program, National Cancer Institute, Bethesda, Maryland, USA
| | - John H Rossmeisl
- Department of Small Animal Clinical Sciences, VA-MD College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Christina Mazcko
- National Cancer Institute, National Institutes of Health, Comparative Oncology Program, Center for Cancer Research, Bethesda, Maryland, USA
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12
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Abstract
Comparative oncology clinical trials play an important and growing role in cancer research and drug development efforts. These trials, typically conducted in companion (pet) dogs, allow assessment of novel anticancer agents and combination therapies in a veterinary clinical setting that supports serial biologic sample collections and exploration of dose, schedule and corresponding pharmacokinetic/pharmacodynamic relationships. Further, an intact immune system and natural co-evolution of tumour and microenvironment support exploration of novel immunotherapeutic strategies. Substantial improvements in our collective understanding of the molecular landscape of canine cancers have occurred in the past 10 years, facilitating translational research and supporting the inclusion of comparative studies in drug development. The value of the approach is demonstrated in various clinical trial settings, including single-agent or combination response rates, inhibition of metastatic progression and randomized comparison of multiple agents in a head-to-head fashion. Such comparative oncology studies have been purposefully included in the developmental plan for several US FDA-approved and up-and-coming anticancer drugs. Challenges for this field include keeping pace with technology and data dissemination/harmonization, improving annotation of the canine genome and immune system, and generation of canine-specific validated reagents to support integration of correlative biology within clinical trial efforts.
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Affiliation(s)
- Amy K LeBlanc
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Christina N Mazcko
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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13
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Amin SB, Anderson KJ, Boudreau CE, Martinez-Ledesma E, Kocakavuk E, Johnson KC, Barthel FP, Varn FS, Kassab C, Ling X, Kim H, Barter M, Lau CC, Ngan CY, Chapman M, Koehler JW, Long JP, Miller AD, Miller CR, Porter BF, Rissi DR, Mazcko C, LeBlanc AK, Dickinson PJ, Packer RA, Taylor AR, Rossmeisl JH, Woolard KD, Heimberger AB, Levine JM, Verhaak RGW. Comparative Molecular Life History of Spontaneous Canine and Human Gliomas. Cancer Cell 2020; 37:243-257.e7. [PMID: 32049048 PMCID: PMC7132629 DOI: 10.1016/j.ccell.2020.01.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 11/15/2019] [Accepted: 01/10/2020] [Indexed: 02/08/2023]
Abstract
Sporadic gliomas in companion dogs provide a window on the interaction between tumorigenic mechanisms and host environment. We compared the molecular profiles of canine gliomas with those of human pediatric and adult gliomas to characterize evolutionarily conserved mammalian mutational processes in gliomagenesis. Employing whole-genome, exome, transcriptome, and methylation sequencing of 83 canine gliomas, we found alterations shared between canine and human gliomas such as the receptor tyrosine kinases, TP53 and cell-cycle pathways, and IDH1 R132. Canine gliomas showed high similarity with human pediatric gliomas per robust aneuploidy, mutational rates, relative timing of mutations, and DNA-methylation patterns. Our cross-species comparative genomic analysis provides unique insights into glioma etiology and the chronology of glioma-causing somatic alterations.
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Affiliation(s)
- Samirkumar B Amin
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Kevin J Anderson
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - C Elizabeth Boudreau
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Emmanuel Martinez-Ledesma
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Avenue Morones Prieto 3000, Monterrey, Nuevo Leon 64710, Mexico; Department of Neuro-Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Emre Kocakavuk
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA; DKFZ Division of Translational Neurooncology at the West German Cancer Center (WTZ), German Cancer Consortium (DKTK) Partner Site & Department of Neurosurgery, University Hospital Essen, Essen, Germany
| | - Kevin C Johnson
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Floris P Barthel
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Frederick S Varn
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Cynthia Kassab
- Department of Neurosurgery, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiaoyang Ling
- Department of Neurosurgery, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hoon Kim
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Mary Barter
- The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Ching C Lau
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA; Connecticut Children's Medical Center, Hartford, CT 06106, USA; University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Chew Yee Ngan
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Margaret Chapman
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Jennifer W Koehler
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - James P Long
- Department of Neurosurgery, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Department of Biostatistics, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - C Ryan Miller
- Departments of Pathology and Laboratory Medicine, Neurology, and Pharmacology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Brian F Porter
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Daniel R Rissi
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Peter J Dickinson
- Department of Surgical and Radiological Sciences, UC Davis School of Veterinary Medicine, Davis, CA, USA
| | - Rebecca A Packer
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Amanda R Taylor
- Auburn University College of Veterinary Medicine, Auburn, AL, USA
| | | | - Kevin D Woolard
- Department of Surgical and Radiological Sciences, UC Davis School of Veterinary Medicine, Davis, CA, USA
| | - Amy B Heimberger
- Department of Neurosurgery, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jonathan M Levine
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Roel G W Verhaak
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA.
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14
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Abstract
The potential for companion (pet) species with spontaneously arising tumors to act as surrogates for preclinical development of advanced cancer imaging technologies has become more apparent in the last decade. The utility of the companion model specifically centers around issues related to body size (including spatial target/normal anatomic characteristics), physical size and spatial distribution of metastasis, tumor heterogeneity, the presence of an intact syngeneic immune system and a syngeneic tumor microenvironment shaped by the natural evolution of the cancer. Companion species size allows the use of similar equipment, hardware setup, software, and scan protocols which provide the opportunity for standardization and harmonization of imaging operating procedures and quality assurance across imaging protocols, imaging hardware, and the imaged species. Murine models generally do not replicate the size and spatial distribution of human metastatic cancer and these factors strongly influence image resolution and dosimetry. The following review will discuss several aspects of comparative cancer imaging in more detail while providing several illustrative examples of investigational approaches performed or currently under exploration at our institutions. Topics addressed include a discussion on interested consortia; image quality assurance and harmonization; image-based biomarker development and validation; contrast agent and radionuclide tracer development; advanced imaging to assess and predict response to cytotoxic and immunomodulatory anticancer agents; imaging of the tumor microenvironment; development of novel theranostic approaches; cell trafficking assessment via non-invasive imaging; and intraoperative imaging to inform surgical oncology decision making. Taken in totality, these comparative opportunities predict that safety, diagnostic and efficacy data generated in companion species with naturally developing and progressing cancers would better recapitulate the human cancer condition than that of artificial models in small rodent systems and ultimately accelerate the integration of novel imaging technologies into clinical practice. It is our hope that the examples presented should serve to provide those involved in cancer investigations who are unfamiliar with available comparative methodologies an understanding of the potential utility of this approach.
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Affiliation(s)
- David M Vail
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States.,Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI, United States
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD, United States
| | - Robert Jeraj
- Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI, United States.,Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
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15
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Koehler JW, Miller AD, Miller CR, Porter B, Aldape K, Beck J, Brat D, Cornax I, Corps K, Frank C, Giannini C, Horbinski C, Huse JT, O'Sullivan MG, Rissi DR, Mark Simpson R, Woolard K, Shih JH, Mazcko C, Gilbert MR, LeBlanc AK. A Revised Diagnostic Classification of Canine Glioma: Towards Validation of the Canine Glioma Patient as a Naturally Occurring Preclinical Model for Human Glioma. J Neuropathol Exp Neurol 2019; 77:1039-1054. [PMID: 30239918 DOI: 10.1093/jnen/nly085] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The National Cancer Institute-led multidisciplinary Comparative Brain Tumor Consortium (CBTC) convened a glioma pathology board, comprising both veterinarian and physician neuropathologists, and conducted a comprehensive review of 193 cases of canine glioma. The immediate goal was to improve existing glioma classification methods through creation of a histologic atlas of features, thus yielding greater harmonization of phenotypic characterization. The long-term goal was to support future incorporation of clinical outcomes and genomic data into proposed simplified diagnostic schema, so as to further bridge the worlds of veterinary and physician neuropathology and strengthen validity of the dog as a naturally occurring, translationally relevant animal model of human glioma. All cases were morphologically reclassified according to a new schema devised by the entire board, yielding a majority opinion diagnosis of astrocytoma (43, 22.3%), 19 of which were low-grade and 24 high-grade, and oligodendroglioma (134, 69.4%), 35 of which were low-grade and 99 were high-grade. Sixteen cases (8.3%) could not be classified as oligodendroglioma or astrocytoma based on morphology alone and were designated as undefined gliomas. The simplified classification scheme proposed herein provides a tractable means for future addition of molecular data, and also serves to highlight histologic similarities and differences between human and canine glioma.
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Affiliation(s)
- Jennifer W Koehler
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - C Ryan Miller
- Department of Pathology and Laboratory Medicine.,Department of Neurology.,Department of Pharmacology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Brian Porter
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Kenneth Aldape
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Jessica Beck
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Daniel Brat
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Ingrid Cornax
- Department of Pediatrics, University of California-San Diego, San Diego California
| | - Kara Corps
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Viral Immunology and Intravital Imaging Section, Bethesda, Maryland
| | - Chad Frank
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Ft. Collins, Colorado
| | - Caterina Giannini
- Division of Anatomic Pathology, Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Craig Horbinski
- Department of Pathology.,Department of Neurosurgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Jason T Huse
- Departments of Pathology and Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - M Gerard O'Sullivan
- Masonic Cancer Center Comparative Pathology Shared Resource and Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
| | - Daniel R Rissi
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, Georgia
| | - R Mark Simpson
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Molecular Pathology Unit, Laboratory of Cancer Biology and Genetics, Bethesda, Maryland
| | - Kevin Woolard
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California-Davis, Davis, California
| | - Joanna H Shih
- Biometrics Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Mark R Gilbert
- National Institute of Neurological Disorders and Stroke and the Center for Cancer Research, National Cancer Institute, National Institutes of Health, NeuroOncology Branch, Bethesda, Maryland
| | - Amy K LeBlanc
- National Cancer Institute, National Institutes of Health, Comparative Oncology Program, Center for Cancer Research, Bethesda, Maryland
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16
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Mochel JP, Ekker SC, Johannes CM, Jergens AE, Allenspach K, Bourgois-Mochel A, Knouse M, Benzekry S, Wierson W, LeBlanc AK, Kenderian SS. CAR T Cell Immunotherapy in Human and Veterinary Oncology: Changing the Odds Against Hematological Malignancies. AAPS J 2019; 21:50. [PMID: 30963322 DOI: 10.1208/s12248-019-0322-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/17/2019] [Indexed: 01/14/2023]
Abstract
The advent of the genome editing era brings forth the promise of adoptive cell transfer using engineered chimeric antigen receptor (CAR) T cells for targeted cancer therapy. CAR T cell immunotherapy is probably one of the most encouraging developments for the treatment of hematological malignancies. In 2017, two CAR T cell therapies were approved by the US Food and Drug Administration: one for the treatment of pediatric acute lymphoblastic leukemia (ALL) and the other for adult patients with advanced lymphomas. However, despite significant progress in the area, CAR T cell therapy is still in its early days and faces significant challenges, including the complexity and costs associated with the technology. B cell lymphoma is the most common hematopoietic cancer in dogs, with an incidence approaching 0.1% and a total of 20-100 cases per 100,000 individuals. It is a widely accepted naturally occurring model for human non-Hodgkin's lymphoma. Current treatment is with combination chemotherapy protocols, which prolong life for less than a year in canines and are associated with severe dose-limiting side effects, such as gastrointestinal and bone marrow toxicity. To date, one canine study generated CAR T cells by transfection of mRNA for CAR domain expression. While this was shown to provide a transient anti-tumor activity, results were modest, indicating that stable, genomic integration of CAR modules is required in order to achieve lasting therapeutic benefit. This commentary summarizes the current state of knowledge on CAR T cell immunotherapy in human medicine and its potential applications in animal health, while discussing the potential of the canine model as a translational system for immuno-oncology research.
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Affiliation(s)
- Jonathan P Mochel
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, 50011, USA. .,Iowa State University College of Vet. Medicine, 2448 Lloyd, 1809 S Riverside Dr., Ames, Iowa, 50011-1250, USA.
| | - Stephen C Ekker
- Mayo Clinic Cancer Center Department of Biochemistry and Molecular Biology, Rochester, Minnesota, 55905, USA
| | - Chad M Johannes
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Albert E Jergens
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Karin Allenspach
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Agnes Bourgois-Mochel
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Michael Knouse
- Department of Biomedical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Sebastien Benzekry
- Team MONC, Institut National de Recherche en Informatique et en Automatique, Bordeaux, France
| | - Wesley Wierson
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa, 50011, USA
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research National Cancer Institute, Bethesda, Maryland, 20892, USA
| | - Saad S Kenderian
- Department of Medicine, Mayo Clinic Division of Hematology, Rochester, Minnesota, 55905, USA.,Department of Immunology, Mayo Clinic, Rochester, Minnesota, 55905, USA
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17
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Schlein LJ, Fadl-Alla B, Pondenis HC, Lezmi S, Eberhart CG, LeBlanc AK, Dickinson PJ, Hergenrother PJ, Fan TM. Immunohistochemical Characterization of Procaspase-3 Overexpression as a Druggable Target With PAC-1, a Procaspase-3 Activator, in Canine and Human Brain Cancers. Front Oncol 2019; 9:96. [PMID: 30859090 PMCID: PMC6397847 DOI: 10.3389/fonc.2019.00096] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 02/04/2019] [Indexed: 11/24/2022] Open
Abstract
Gliomas and meningiomas are the most common brain neoplasms affecting both humans and canines, and identifying druggable targets conserved across multiple brain cancer histologies and comparative species could broadly improve treatment outcomes. While satisfactory cure rates for low grade, non-invasive brain cancers are achievable with conventional therapies including surgery and radiation, the management of non-resectable or recurrent brain tumors remains problematic and necessitates the discovery of novel therapies that could be accelerated through a comparative approach, such as the inclusion of pet dogs with naturally-occurring brain cancers. Evidence supports procaspase-3 as a druggable brain cancer target with PAC-1, a pro-apoptotic, small molecule activator of procaspase-3 that crosses the blood-brain barrier. Procaspase-3 is frequently overexpressed in malignantly transformed tissues and provides a preferential target for inducing cancer cell apoptosis. While preliminary evidence supports procaspase-3 as a viable target in preclinical models, with PAC-1 demonstrating activity in rodent models and dogs with spontaneous brain tumors, the broader applicability of procaspase-3 as a target in human brain cancers, as well as the comparability of procaspase-3 expressions between differing species, requires further investigation. As such, a large-scale validation of procaspase-3 as a druggable target was undertaken across 651 human and canine brain tumors. Relative to normal brain tissues, procaspase-3 was overexpressed in histologically diverse cancerous brain tissues, supporting procaspase-3 as a broad and conserved therapeutic target. Additionally, procaspase-3 expressing glioma and meningioma cell lines were sensitive to the apoptotic effects of PAC-1 at biologically relevant exposures achievable in cancer patients. Importantly, the clinical relevance of procaspase-3 as a potential prognostic variable was demonstrated in human astrocytomas of variable histologic grades and associated clinical outcomes, whereby tumoral procaspase-3 expression was negatively correlated with survival; findings which suggest that PAC-1 might provide the greatest benefit for patients with the most guarded prognoses.
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Affiliation(s)
- Lisa J. Schlein
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Bahaa Fadl-Alla
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Holly C. Pondenis
- Department of Veterinary Clinical Medicine and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Stéphane Lezmi
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Charles G. Eberhart
- Department of Neuropathology and Ophthalmic Pathology, Johns Hopkins University, Baltimore, MD, United States
| | - Amy K. LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD, United States
| | - Peter J. Dickinson
- Department of Surgical and Radiological Sciences, University of California, Davis, Davis, CA, United States
| | - Paul J. Hergenrother
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Timothy M. Fan
- Department of Veterinary Clinical Medicine and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
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18
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Rowe JA, Morandi F, Osborne DR, Wall JS, Kennel SJ, Reed RB, LeBlanc AK. Relative skeletal distribution of proliferating marrow in the adult dog determined using 3'-deoxy-3'-[ 18 F]fluorothymidine. Anat Histol Embryol 2018; 48:46-52. [PMID: 30353574 PMCID: PMC6587773 DOI: 10.1111/ahe.12410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/16/2018] [Accepted: 10/01/2018] [Indexed: 11/27/2022]
Abstract
3'-deoxy-3'-[18 F]fluorothymidine (18 FLT) is a radiopharmaceutical tracer used with positron emission tomography (PET), often in combination with computed tomography (CT), to image DNA synthesis, and thus, cellular proliferation. Characteristic accumulation of the tracer within haematopoietic bone marrow provides a noninvasive means to assess marrow activity and distribution throughout the living animal. The present study utilizes three-dimensional analysis of 18 FLT-PET/CT scans to quantify the relative skeletal distribution of active marrow by anatomic site in the dog. Scans were performed on six healthy, adult (3-6 years of age), mixed-breed dogs using a commercially available PET/CT scanner consisting of a 64-slice helical CT scanner combined with an integrated four ring, high-resolution LSO PET scanner. Regions of interest encompassing 11 separate skeletal regions (skull, cervical vertebral column, thoracic vertebral column, lumbar vertebral column, sacrum, ribs, sternum, scapulae, proximal humeri, ossa coxarum, and proximal femora) were manually drawn based on CT images and thresholded by standardized uptake value to delineate bone marrow activity. Activity within each skeletal region was then divided by the total skeletal activity to derive the per cent of overall marrow activity within an individual site. The majority of proliferative marrow was located within the vertebral column. Of the sites traditionally accessed clinically for marrow sampling, the proximal humerus contained the largest percentage, followed by the ossa coxarum, proximal femur, and sternum, respectively. This information may be used to guide selection of traditional marrow sampling sites as well as inform efforts to spare important sites of haematopoiesis in radiation therapy planning.
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Affiliation(s)
- Joshua A Rowe
- College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Federica Morandi
- College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Dustin R Osborne
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee
| | - Jonathan S Wall
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee
| | - Stephen J Kennel
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee
| | - Robert B Reed
- College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Amy K LeBlanc
- College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee.,Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee
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19
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Nagaya T, Okuyama S, Ogata F, Maruoka Y, Knapp DW, Karagiannis SN, Fazekas-Singer J, Choyke PL, LeBlanc AK, Jensen-Jarolim E, Kobayashi H. Near infrared photoimmunotherapy targeting bladder cancer with a canine anti-epidermal growth factor receptor (EGFR) antibody. Oncotarget 2018; 9:19026-19038. [PMID: 29721181 PMCID: PMC5922375 DOI: 10.18632/oncotarget.24876] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/06/2018] [Indexed: 12/23/2022] Open
Abstract
Anti-epidermal growth factor receptor (EGFR) antibody therapy is used in EGFR expressing cancers including lung, colon, head and neck, and bladder cancers, however results have been modest. Near infrared photoimmunotherapy (NIR-PIT) is a highly selective tumor treatment that employs an antibody-photo-absorber conjugate which is activated by NIR light. NIR-PIT is in clinical trials in patients with recurrent head and neck cancers using cetuximab-IR700 as the conjugate. However, its use has otherwise been restricted to mouse models. This is an effort to explore larger animal models with NIR-PIT. We describe the use of a recombinant canine anti-EGFR monoclonal antibody (mAb), can225IgG, conjugated to the photo-absorber, IR700DX, in three EGFR expressing canine transitional cell carcinoma (TCC) cell lines as a prelude to possible canine clinical studies. Can225-IR700 conjugate showed specific binding and cell-specific killing after NIR-PIT on EGFR expressing cells in vitro. In the in vivo study, can225-IR700 conjugate demonstrated accumulation of the fluorescent conjugate with high tumor-to-background ratio. Tumor-bearing mice were separated into 4 groups: (1) no treatment; (2) 100 µg of can225-IR700 i.v. only; (3) NIR light exposure only; (4) 100 µg of can225-IR700 i.v., NIR light exposure. Tumor growth was significantly inhibited by NIR-PIT treatment compared with the other groups (p < 0.001), and significantly prolonged survival was achieved (p < 0.001 vs. other groups) in the treatment groups. In conclusion, NIR-PIT with can225-IR700 is a promising treatment for canine EGFR-expressing cancers, including invasive transitional cell carcinoma in pet dogs, that could provide a pathway to translation to humans.
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Affiliation(s)
- Tadanobu Nagaya
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Shuhei Okuyama
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Fusa Ogata
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Yasuhiro Maruoka
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Deborah W. Knapp
- Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA
| | - Sophia N. Karagiannis
- St. John’s Institute of Dermatology, School of Basic and Medical Biosciences, King’s College London, London, UK
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King’s College London, Guy’s Cancer Centre, London, UK
| | - Judit Fazekas-Singer
- Comparative Medicine, The Interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
| | - Peter L. Choyke
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Amy K. LeBlanc
- Comparative Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Erika Jensen-Jarolim
- Comparative Medicine, The Interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
| | - Hisataka Kobayashi
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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20
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Dull AB, Wilsker D, Hollingshead M, Mazcko C, Annunziata CM, LeBlanc AK, Doroshow JH, Kinders RJ, Parchment RE. Development of a quantitative pharmacodynamic assay for apoptosis in fixed tumor tissue and its application in distinguishing cytotoxic drug-induced DNA double strand breaks from DNA double strand breaks associated with apoptosis. Oncotarget 2018; 9:17104-17116. [PMID: 29682208 PMCID: PMC5908309 DOI: 10.18632/oncotarget.24936] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/06/2018] [Indexed: 11/25/2022] Open
Abstract
DNA double strand breaks (DSBs) induced by cancer therapeutic agents can lead to DNA damage repair or persistent DNA damage, which can induce apoptotic cell death; however, apoptosis also induces DSBs independent of genotoxic insult. γH2AX is an established biomarker for DSBs but cannot distinguish between these mechanisms. Activated cleaved caspase-3 (CC3) promotes apoptosis by enhancing nuclear condensation, DNA fragmentation, and plasma membrane blebbing. Here, we describe an immunofluorescence assay that distinguishes between apoptosis and drug-induced DSBs by measuring coexpression of γH2AX and membrane blebbing−associated CC3 to indicate apoptosis, and γH2AX in the absence of CC3 blebbing to indicate drug-induced DNA damage. These markers were examined in xenograft models following treatment with topotecan, cisplatin, or birinapant. A topotecan regimen conferring tumor regression induced tumor cell DSBs resulting from both apoptosis and direct DNA damage. In contrast, a cisplatin regimen yielding tumor growth delay, but not regression, resulted in tumor cell DSBs due solely to direct DNA damage. MDA-MB-231 xenografts exposed to birinapant, which promotes apoptosis but does not directly induce DSBs, exhibited dose-dependent increases in colocalized γH2AX/CC3 blebbing in tumor cells. Clinical feasibility was established using formalin-fixed, paraffin-embedded biopsies from a canine cancer clinical trial; γH2AX/CC3 colocalization analysis revealed apoptosis induction by two novel indenoisoquinoline topoisomerase I inhibitors, which was consistent with pathologist-assessed apoptosis and reduction of tumor volume. This assay is ready for use in clinical trials to elucidate the mechanism of action of investigational agents and combination regimens intended to inflict DNA damage, apoptotic cell death, or both.
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Affiliation(s)
- Angie B Dull
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Deborah Wilsker
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Melinda Hollingshead
- Biological Testing Branch, National Cancer Institute-Frederick, Frederick, Maryland, USA
| | - Christina Mazcko
- Comparative Oncology Program, National Cancer Institute, Bethesda, Maryland, USA
| | | | - Amy K LeBlanc
- Comparative Oncology Program, National Cancer Institute, Bethesda, Maryland, USA
| | - James H Doroshow
- Division of Cancer Treatment and Diagnosis and Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Robert J Kinders
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Ralph E Parchment
- Clinical Pharmacodynamic Biomarkers Program, Applied/Developmental Research Directorate, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
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21
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Packer RA, Rossmeisl JH, Kent MS, Griffin JF, Mazcko C, LeBlanc AK. Consensus recommendations on standardized magnetic resonance imaging protocols for multicenter canine brain tumor clinical trials. Vet Radiol Ultrasound 2018. [PMID: 29522650 DOI: 10.1111/vru.12608] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The National Cancer Institute Comparative Brain Tumor Consortium, Patient Outcomes Working Group, propose a consensus document in support of standardized magnetic resonance imaging protocols for canine brain tumor clinical trials. The intent of this manuscript is to address the widely acknowledged need to ensure canine brain tumor imaging protocols are relevant and have sufficient equivalency to translate to human studies such that: (1) multi-institutional studies can be performed with minimal inter-institutional variation, and (2) imaging protocols are consistent with human consensus recommendations to permit reliable translation of imaging data to human clinical trials. Consensus recommendations include pre- and postcontrast three-dimensional T1-weighted images, T2-weighted turbo spin echo in all three planes, T2*-weighted gradient recalled echo, T2-weighted fluid attenuated inversion recovery, and diffusion weighted imaging/diffusion tensor imaging in transverse plane; field of view of ≤150 mm; slice thickness of ≤2 mm, matrix ≥ 256 for two-dimensional images, and 150 or 256 for three-dimensional images.
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Affiliation(s)
- Rebecca A Packer
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, 80523-1678
| | - John H Rossmeisl
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, 24061
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, University of California Davis, School of Veterinary Medicine, Davis, CA, 95616
| | - John F Griffin
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892
| | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892
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22
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LeBlanc AK, Oakley GJ, Lowery CD, Mendoza A, Ren L, Holzer T, Credille K, Winings C, Estelle A, Chen M, Finnegan P, Blosser W, Schade A, Melemed S, Stancato LF. Abstract LB-B01: The anti-platelet-derived growth factor receptor α antibody olaratumab (Lartruvo) increases overall survival in metastatic mouse models of human osteosarcoma. Mol Cancer Ther 2018. [DOI: 10.1158/1535-7163.targ-17-lb-b01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Platelet-derived growth factor receptor alpha (PDGFRα) is implicated in several types of adult and pediatric malignancies, where its aberrant expression and/or activation in tumor cells and/or tumor-associated stromal cells promote primary tumor growth and metastasis. Therefore, PDGFRα signaling may regulate disease progression via autocrine and paracrine modes of activation and facilitating crosstalk between the tumor and stroma. Olaratumab is a fully humanized monoclonal antibody that selectively binds human PDGFRα and blocks signaling initiated by ligand binding. We evaluated the efficacy of olaratumab and 1E10, a high affinity anti-mouse PDGFRα antibody in preclinical metastatic models of human osteosarcoma. A metastatic derivative of the PDGFRα-positive human osteosarcoma cell line HuO9 (HuO9-H3) was implanted in the gastrocnemius of mice. Olaratumab/1E10 was administered twice weekly once tumors grew to ~ 150 mm3. When tumors reached an average of volume of 1600 mm3, tumor-bearing limbs were amputated and four separate treatment cohorts were evaluated. These cohorts were as follows: (1) continuous IgG control antibody treatment, (2) continuous olaratumab/1E10 treatment prior to and after amputation, (3) olaratumab/1E10 treatment pre-amputation followed by IgG administration post-amputation, and (4) IgG treatment pre-amputation followed by olaratumab treatment post-amputation. A statistically significant and prolonged overall survival (OS) benefit (p<0.001) was observed in the continuous olaratumab/1E10 treatment group only, and correlated with a reduced tumor burden in the lung as determined by histologic evaluation. An olaratumab/1E10-dependent statistically significant OS benefit (p<0.001) was also observed in the HuO9-H3 and PDGFRα/PDGFRβ-positive MG63.3 human osteosarcoma cell lines introduced via tail vein injection. Interestingly, histologic review shows reduced tumor burden in the lung and lung pleura/mediastinum of these models. Mouse-specific bright field in situ hybridization (BRISH) showed increased expression of PDGFRA, PDGFRB, associated ligands, and VEGFA in the murine lung stroma prior to histologically apparent metastases. These data indicate that olaratumab/1E10-mediated PDGFRα blockade significantly increases OS in preclinical mouse models of human osteosarcoma and suggest a novel role for the PDGFRα pathway in the pathogenesis of metastatic osteosarcoma lung lesions.
Citation Format: Amy K. LeBlanc, Gerard J. Oakley, Caitlin D. Lowery, Arnulfo Mendoza, Ling Ren, Timothy Holzer, Kelly Credille, Cynthia Winings, Amanda Estelle, Mia Chen, Patrick Finnegan, Wayne Blosser, Andrew Schade, Symantha Melemed, Louis F. Stancato. The anti-platelet-derived growth factor receptor α antibody olaratumab (Lartruvo) increases overall survival in metastatic mouse models of human osteosarcoma [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics; 2017 Oct 26-30; Philadelphia, PA. Philadelphia (PA): AACR; Mol Cancer Ther 2018;17(1 Suppl):Abstract nr LB-B01.
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Affiliation(s)
| | | | | | | | - Ling Ren
- 1National Cancer Institute, Bethesda, MD
| | | | | | | | | | - Mia Chen
- 2Eli Lilly and Company, Indianapolis, IN
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23
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Naik S, Galyon GD, Jenks NJ, Steele MB, Miller AC, Allstadt SD, Suksanpaisan L, Peng KW, Federspiel MJ, Russell SJ, LeBlanc AK. Comparative Oncology Evaluation of Intravenous Recombinant Oncolytic Vesicular Stomatitis Virus Therapy in Spontaneous Canine Cancer. Mol Cancer Ther 2017; 17:316-326. [PMID: 29158470 DOI: 10.1158/1535-7163.mct-17-0432] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/13/2017] [Accepted: 11/03/2017] [Indexed: 12/22/2022]
Abstract
Clinical translation of intravenous therapies to treat disseminated or metastatic cancer is imperative. Comparative oncology, the evaluation of novel cancer therapies in animals with spontaneous cancer, can be utilized to inform and accelerate clinical translation. Preclinical murine studies demonstrate that single-shot systemic therapy with a vesicular stomatitis virus (VSV)-IFNβ-NIS, a novel recombinant oncolytic VSV, can induce curative remission in tumor-bearing mice. Clinical translation of VSV-IFNβ-NIS therapy is dependent on comprehensive assessment of clinical toxicities, virus shedding, pharmacokinetics, and efficacy in clinically relevant models. Dogs spontaneously develop cancer with comparable etiology, clinical progression, and response to therapy as human malignancies. A comparative oncology study was carried out to investigate feasibility and tolerability of intravenous oncolytic VSV-IFNβ-NIS therapy in pet dogs with spontaneous cancer. Nine dogs with various malignancies were treated with a single intravenous dose of VSV-IFNβ-NIS. Two dogs with high-grade peripheral T-cell lymphoma had rapid but transient remission of disseminated disease and transient hepatotoxicity that resolved spontaneously. There was no shedding of infectious virus. Correlative pharmacokinetic studies revealed elevated levels of VSV RNA in blood in dogs with measurable disease remission. This is the first evaluation of intravenous oncolytic virus therapy for spontaneous canine cancer, demonstrating that VSV-IFNβ-NIS is well-tolerated and safe in dogs with advanced or metastatic disease. This approach has informed clinical translation, including dose and target indication selection, leading to a clinical investigation of intravenous VSV-IFNβ-NIS therapy, and provided preliminary evidence of clinical efficacy and potential biomarkers that correlate with therapeutic response. Mol Cancer Ther; 17(1); 316-26. ©2017 AACR.
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Affiliation(s)
- Shruthi Naik
- Department of Molecular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota.,Vyriad, Inc., Rochester, Minnesota
| | - Gina D Galyon
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - Nathan J Jenks
- Toxicology and Pharmacology Laboratory, Mayo Clinic, Rochester, Minnesota
| | - Michael B Steele
- Toxicology and Pharmacology Laboratory, Mayo Clinic, Rochester, Minnesota
| | - Amber C Miller
- Department of Molecular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Sara D Allstadt
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | | | - Kah Whye Peng
- Toxicology and Pharmacology Laboratory, Mayo Clinic, Rochester, Minnesota
| | - Mark J Federspiel
- Viral Vector Production Laboratory, Mayo Clinic, Rochester, Minnesota
| | - Stephen J Russell
- Department of Molecular Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota.,Vyriad, Inc., Rochester, Minnesota
| | - Amy K LeBlanc
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee.
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24
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Yu PY, Gardner HL, Roberts R, Cam H, Hariharan S, Ren L, LeBlanc AK, Xiao H, Lin J, Guttridge DC, Mo X, Bennett CE, Coss CC, Ling Y, Phelps MA, Houghton P, London CA. Target specificity, in vivo pharmacokinetics, and efficacy of the putative STAT3 inhibitor LY5 in osteosarcoma, Ewing's sarcoma, and rhabdomyosarcoma. PLoS One 2017; 12:e0181885. [PMID: 28750090 PMCID: PMC5531494 DOI: 10.1371/journal.pone.0181885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 07/07/2017] [Indexed: 12/21/2022] Open
Abstract
Background STAT3 is a transcription factor involved in cytokine and receptor kinase signal transduction that is aberrantly activated in a variety of sarcomas, promoting metastasis and chemotherapy resistance. The purpose of this work was to develop and test a novel putative STAT3 inhibitor, LY5. Methods and findings An in silico fragment-based drug design strategy was used to create LY5, a small molecule inhibitor that blocks the STAT3 SH2 domain phosphotyrosine binding site, inhibiting homodimerization. LY5 was evaluated in vitro demonstrating good biologic activity against rhabdomyosarcoma, osteosarcoma and Ewing’s sarcoma cell lines at high nanomolar/low micromolar concentrations, as well as specific inhibition of STAT3 phosphorylation without effects on other STAT3 family members. LY5 exhibited excellent oral bioavailability in both mice and healthy dogs, and drug absorption was enhanced in the fasted state with tolerable dosing in mice at 40 mg/kg BID. However, RNAi-mediated knockdown of STAT3 did not phenocopy the biologic effects of LY5 in sarcoma cell lines. Moreover, concentrations needed to inhibit ex vivo metastasis growth using the PuMA assay were significantly higher than those needed to inhibit STAT3 phosphorylation in vitro. Lastly, LY5 treatment did not inhibit the growth of sarcoma xenografts or prevent pulmonary metastasis in mice. Conclusions LY5 is a novel small molecule inhibitor that effectively inhibits STAT3 phosphorylation and cell proliferation at nanomolar concentrations. LY5 demonstrates good oral bioavailability in mice and dogs. However LY5 did not decrease tumor growth in xenograft mouse models and STAT3 knockdown did not induce concordant biologic effects. These data suggest that the anti-cancer effects of LY5 identified in vitro were not mediated through STAT3 inhibition.
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Affiliation(s)
- Peter Y. Yu
- Medical Student Research Program, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Heather L. Gardner
- Department of Veterinary Biosciences and Clinical Sciences, The Ohio State University, Columbus, Ohio, United States of America
| | - Ryan Roberts
- Center for Childhood Cancer, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Hakan Cam
- Center for Childhood Cancer, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Seethalakshmi Hariharan
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center, San Antonio, Texas, United States of America
| | - Ling Ren
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Amy K. LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Hui Xiao
- Center for Childhood Cancer, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Jiayuh Lin
- Center for Childhood Cancer, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Denis C. Guttridge
- Arthur G. James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Xiaokui Mo
- Center for Biostatistics, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Chad E. Bennett
- Medicinal Chemistry Shared Resource, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Christopher C. Coss
- Pharmacoanalytic Shared Resource, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Yonghua Ling
- Pharmacoanalytic Shared Resource, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Mitch A. Phelps
- Pharmacoanalytic Shared Resource, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Peter Houghton
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center, San Antonio, Texas, United States of America
| | - Cheryl A. London
- Department of Veterinary Biosciences and Clinical Sciences, The Ohio State University, Columbus, Ohio, United States of America
- Cummings School of Veterinary Medicine, Tufts University, Grafton, Massachusetts, United States of America
- * E-mail:
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Larson JC, Allstadt SD, Fan TM, Khanna C, Lunghofer PJ, Hansen RJ, Gustafson DL, Legendre AM, Galyon GD, LeBlanc AK, Martin-Jimenez T. Pharmacokinetics of orally administered low-dose rapamycin in healthy dogs. Am J Vet Res 2016; 77:65-71. [PMID: 26709938 DOI: 10.2460/ajvr.77.1.65] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To determine the pharmacokinetics of orally administered rapamycin in healthy dogs. ANIMALS 5 healthy purpose-bred hounds. PROCEDURES The study consisted of 2 experiments. In experiment 1, each dog received rapamycin (0.1 mg/kg, PO) once; blood samples were obtained immediately before and at 0.5, 1, 2, 4, 6, 12, 24, 48, and 72 hours after administration. In experiment 2, each dog received rapamycin (0.1 mg/kg, PO) once daily for 5 days; blood samples were obtained immediately before and at 3, 6, 24, 27, 30, 48, 51, 54, 72, 75, 78, 96, 96.5, 97, 98, 100, 102, 108, 120, 144, and 168 hours after the first dose. Blood rapamycin concentration was determined by a validated liquid chromatography-tandem mass spectrometry assay. Pharmacokinetic parameters were determined by compartmental and noncompartmental analyses. RESULTS Mean ± SD blood rapamycin terminal half-life, area under the concentration-time curve from 0 to 48 hours after dosing, and maximum concentration were 38.7 ± 12.7 h, 140 ± 23.9 ng•h/mL, and 8.39 ± 1.73 ng/mL, respectively, for experiment 1, and 99.5 ± 89.5 h, 126 ± 27.1 ng•h/mL, and 5.49 ± 1.99 ng/mL, respectively, for experiment 2. Pharmacokinetic parameters for rapamycin after administration of 5 daily doses differed significantly from those after administration of 1 dose. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that oral administration of low-dose (0.1 mg/kg) rapamycin to healthy dogs achieved blood concentrations measured in nanograms per milliliter. The optimal dose and administration frequency of rapamcyin required to achieve therapeutic effects in tumor-bearing dogs, as well as toxicity after chronic dosing, need to be determined.
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26
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LeBlanc AK, Mazcko C, Brown DE, Koehler JW, Miller AD, Miller CR, Bentley RT, Packer RA, Breen M, Boudreau CE, Levine JM, Simpson RM, Halsey C, Kisseberth W, Rossmeisl JH, Dickinson PJ, Fan TM, Corps K, Aldape K, Puduvalli V, Pluhar GE, Gilbert MR. Creation of an NCI comparative brain tumor consortium: informing the translation of new knowledge from canine to human brain tumor patients. Neuro Oncol 2016; 18:1209-18. [PMID: 27179361 PMCID: PMC4999002 DOI: 10.1093/neuonc/now051] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 02/27/2016] [Indexed: 12/14/2022] Open
Abstract
On September 14-15, 2015, a meeting of clinicians and investigators in the fields of veterinary and human neuro-oncology, clinical trials, neuropathology, and drug development was convened at the National Institutes of Health campus in Bethesda, Maryland. This meeting served as the inaugural event launching a new consortium focused on improving the knowledge, development of, and access to naturally occurring canine brain cancer, specifically glioma, as a model for human disease. Within the meeting, a SWOT (strengths, weaknesses, opportunities, and threats) assessment was undertaken to critically evaluate the role that naturally occurring canine brain tumors could have in advancing this aspect of comparative oncology aimed at improving outcomes for dogs and human beings. A summary of this meeting and subsequent discussion are provided to inform the scientific and clinical community of the potential for this initiative. Canine and human comparisons represent an unprecedented opportunity to complement conventional brain tumor research paradigms, addressing a devastating disease for which innovative diagnostic and treatment strategies are clearly needed.
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Affiliation(s)
- Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Diane E Brown
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Jennifer W Koehler
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Andrew D Miller
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - C Ryan Miller
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - R Timothy Bentley
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Rebecca A Packer
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Matthew Breen
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - C Elizabeth Boudreau
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Jonathan M Levine
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - R Mark Simpson
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Charles Halsey
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - William Kisseberth
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - John H Rossmeisl
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Peter J Dickinson
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Timothy M Fan
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Kara Corps
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Kenneth Aldape
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Vinay Puduvalli
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - G Elizabeth Pluhar
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
| | - Mark R Gilbert
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (A.K.L, C.M.); American Kennel Club Canine Health Foundation, Raleigh, North Carolina (D.E.B); Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama (J.W.K); Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York (A.D.M); Departments of Pathology and Laboratory Medicine and Neurology, Lineberger Comprehensive Cancer Center and Neuroscience Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina (C.R.M); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana (R.T.B); Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado , (R.A.P); Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (M.B.); Department of Small Animal Clinical Sciences, Texas A&M University, College Station, Texas (J.M.L, C.E.B); Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland (R.M.S, C.H.); Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio , (W.K.); Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia (J.H.R); Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, California (P.J.D); Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois (T.M.F); National Institute of Neurological Disorders and Stroke and National Cancer Institute, Bethesda, Maryland (K.C., M.R.G); De
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Stroud C, Dmitriev I, Kashentseva E, Bryan JN, Curiel DT, Rindt H, Reinero C, Henry CJ, Bergman PJ, Mason NJ, Gnanandarajah JS, Engiles JB, Gray F, Laughlin D, Gaurnier-Hausser A, Wallecha A, Huebner M, Paterson Y, O'Connor D, Treml LS, Stannard JP, Cook JL, Jacobs M, Wyckoff GJ, Likins L, Sabbagh U, Skaff A, Guloy AS, Hays HD, LeBlanc AK, Coates JR, Katz ML, Lyons LA, Johnson GC, Johnson GS, O'Brien DP, Duan D, Calvet JP, Gandolfi B, Baron DA, Weiss ML, Webster DA, Karanu FN, Robb EJ, Harman RJ. A One Health overview, facilitating advances in comparative medicine and translational research. Clin Transl Med 2016; 5:26. [PMID: 27558513 PMCID: PMC4996801 DOI: 10.1186/s40169-016-0107-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A1 One health advances and successes in comparative medicine and translational research Cheryl Stroud A2 Dendritic cell-targeted gorilla adenoviral vector for cancer vaccination for canine melanoma Igor Dmitriev, Elena Kashentseva, Jeffrey N. Bryan, David T. Curiel A3 Viroimmunotherapy for malignant melanoma in the companion dog model Jeffrey N. Bryan, David Curiel, Igor Dmitriev, Elena Kashentseva, Hans Rindt, Carol Reinero, Carolyn J. Henry A4 Of mice and men (and dogs!): development of a commercially licensed xenogeneic DNA vaccine for companion animals with malignant melanoma Philip J. Bergman A5 Successful immunotherapy with a recombinant HER2-expressing Listeria monocytogenes in dogs with spontaneous osteosarcoma paves the way for advances in pediatric osteosarcoma Nicola J. Mason, Josephine S. Gnanandarajah, Julie B. Engiles, Falon Gray, Danielle Laughlin, Anita Gaurnier-Hausser, Anu Wallecha, Margie Huebner, Yvonne Paterson A6 Human clinical development of ADXS-HER2 Daniel O’Connor A7 Leveraging use of data for both human and veterinary benefit Laura S. Treml A8 Biologic replacement of the knee: innovations and early clinical results James P. Stannard A9 Mizzou BioJoint Center: a translational success story James L. Cook A10 University and industry translational partnership: from the lab to commercialization Marc Jacobs A11 Beyond docking: an evolutionarily guided OneHealth approach to drug discovery Gerald J. Wyckoff, Lee Likins, Ubadah Sabbagh, Andrew Skaff A12 Challenges and opportunities for data applications in animal health: from precision medicine to precision husbandry Amado S. Guloy A13 A cloud-based programmable platform for health Harlen D. Hays A14 Comparative oncology: One Health in action Amy K. LeBlanc A15 Companion animal diseases bridge the translational gap for human neurodegenerative disease Joan R. Coates, Martin L. Katz, Leslie A. Lyons, Gayle C. Johnson, Gary S. Johnson, Dennis P. O’Brien A16 Duchenne muscular dystrophy gene therapy Dongsheng Duan A17 Polycystic kidney disease: cellular mechanisms to emerging therapies James P. Calvet A18 The domestic cat as a large animal model for polycystic kidney disease Leslie A. Lyons, Barbara Gandolfi A19 The support of basic and clinical research by the Polycystic Kidney Disease Foundation David A. Baron A20 Using naturally occurring large animal models of human disease to enable clinical translation: treatment of arthritis using autologous stromal vascular fraction in dogs Mark L. Weiss A21 Regulatory requirements regarding clinical use of human cells, tissues, and tissue-based products Debra A. Webster A22 Regenerative medicine approaches to Type 1 diabetes treatment Francis N. Karanu A23 The zoobiquity of canine diabetes mellitus, man’s best friend is a friend indeed-islet transplantation Edward J. Robb A24 One Medicine: a development model for cellular therapy of diabetes Robert J. Harman
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Affiliation(s)
| | - Igor Dmitriev
- Biologic Therapeutics Center, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Elena Kashentseva
- Biologic Therapeutics Center, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Jeffrey N Bryan
- Comparative Oncology, Radiobiology, and Epigenetics Laboratory, University of Missouri, Columbia, MO, 65203, USA.,Comparative Oncology, Radiobiology, and Epigenetics Laboratory, University of Missouri, Columbia, MO, 65211, USA
| | - David T Curiel
- Biologic Therapeutics Center, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Hans Rindt
- Comparative Oncology, Radiobiology, and Epigenetics Laboratory, University of Missouri, Columbia, MO, 65211, USA.,Comparative Internal Medicine Laboratory, University of Missouri, Columbia, MO, 65203, USA
| | - Carol Reinero
- Comparative Internal Medicine Laboratory, University of Missouri, Columbia, MO, 65203, USA
| | - Carolyn J Henry
- Comparative Oncology, Radiobiology, and Epigenetics Laboratory, University of Missouri, Columbia, MO, 65211, USA
| | - Philip J Bergman
- Katonah Bedford Veterinary Center, Bedford Hills, NY, 10507, USA.,Clinical Studies Division, VCA, Los Angeles, CA, 90064, USA.,Adjunct Associate Faculty, Memorial Sloan-Kettering Cancer Center, New York City, NY, 10065, USA
| | - Nicola J Mason
- University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA, 19104, USA
| | - Josephine S Gnanandarajah
- University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA, 19104, USA
| | - Julie B Engiles
- University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA, 19104, USA
| | - Falon Gray
- University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA, 19104, USA
| | - Danielle Laughlin
- University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA, 19104, USA
| | - Anita Gaurnier-Hausser
- Office of Professional Studies in the Health Sciences, Drexel University College of Medicine, Room 4801 New College Building, 245 North 15th Street, Philadelphia, PA, 19102, USA
| | - Anu Wallecha
- Advaxis Immunotherapies Inc., 305 College Road East, Princeton, NJ, 08540, USA
| | - Margie Huebner
- ClinData Services Inc., 6713 Holyoke Court, Fort Collins, CO, 80525, USA
| | - Yvonne Paterson
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, 319A Johnson Pavilion, 3610 Hamilton Walk, Philadelphia, PA, 19104, USA
| | - Daniel O'Connor
- Advaxis Immunotherapies Inc., 305 College Road East, Princeton, NJ, 08540, USA
| | | | - James P Stannard
- Department of Orthopaedic Surgery, Missouri Orthopaedic Institute, 1100 Virginia Ave., Columbia, MO, 65212, USA.
| | - James L Cook
- Comparative Orthopaedic Lab, Mizzou BioJoint Center, Missouri Orthopaedic Institute, University of Missouri, Columbia, MO, 65211, USA
| | - Marc Jacobs
- Musculoskeletal Transplant Foundation (MTF), Edison, NJ, 08837, USA
| | - Gerald J Wyckoff
- Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | - Lee Likins
- Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | - Ubadah Sabbagh
- Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | - Andrew Skaff
- Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | | | | | - Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Joan R Coates
- Departments of Veterinary Medicine and Surgery, University of Missouri, Columbia, MO, 65211, USA.
| | - Martin L Katz
- Mason Eye Institute, University of Missouri, Columbia, MO, 65211, USA
| | - Leslie A Lyons
- Departments of Veterinary Medicine and Surgery, University of Missouri, Columbia, MO, 65211, USA.
| | - Gayle C Johnson
- Veterinary Pathobiology, Comparative Neurology Program, University of Missouri, Columbia, MO, 65211, USA
| | - Gary S Johnson
- Veterinary Pathobiology, Comparative Neurology Program, University of Missouri, Columbia, MO, 65211, USA
| | - Dennis P O'Brien
- Departments of Veterinary Medicine and Surgery, University of Missouri, Columbia, MO, 65211, USA
| | - Dongsheng Duan
- Department of Molecular Microbiology and Immunology, Department of Neurology, Department of Bioengineering, University of Missouri, Columbia, MO, 65212, USA
| | - James P Calvet
- Kidney Institute, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Barbara Gandolfi
- Departments of Veterinary Medicine and Surgery, University of Missouri, Columbia, MO, 65211, USA
| | - David A Baron
- Polycystic Kidney Disease Foundation, Kansas City, MO, 64114, USA.
| | - Mark L Weiss
- Department of Anatomy and Physiology, Kansas State University College of Veterinary Medicine, Manhattan, KS, 66506, USA
| | - Debra A Webster
- Cardinal Health Regulatory Sciences, Overland Park, KS, 64078, USA.
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Saba C, Paoloni M, Mazcko C, Kisseberth W, Burton JH, Smith A, Wilson-Robles H, Allstadt S, Vail D, Henry C, Lana S, Ehrhart EJ, Charles B, Kent M, Lawrence J, Burgess K, Borgatti A, Suter S, Woods P, Gordon I, Vrignaud P, Khanna C, LeBlanc AK. A Comparative Oncology Study of Iniparib Defines Its Pharmacokinetic Profile and Biological Activity in a Naturally-Occurring Canine Cancer Model. PLoS One 2016; 11:e0149194. [PMID: 26866698 PMCID: PMC4751284 DOI: 10.1371/journal.pone.0149194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 01/28/2016] [Indexed: 12/25/2022] Open
Abstract
Development of iniparib as an anti-cancer agent was hindered in part by lingering questions regarding its mechanism of action, the activity of its metabolites, and their potential accumulation in tumors. Due to strong similarities in metabolism of iniparib between humans and dogs, a veterinary clinical trial in pet dogs with spontaneous cancers was designed to answer specific questions pertaining to pharmacokinetic exposures and tolerability of iniparib. Dogs were treated with iniparib alone and in combination with carboplatin chemotherapy. Iniparib doses ranged between 10-70 mg/kg intravenously (IV). Plasma, tumor and normal tissue samples were collected before and at various time points scheduled after exposure for pharmacokinetic and biologic analysis. The primary endpoints included characterization of dose-limiting toxicities (DLT) and determination of the drug exposures that could be achieved in both normal and tumor tissues. Nineteen dogs were treated. DLT included fever, anorexia, diarrhea, neutropenia, and thrombocytopenia; most effects were attributable to carboplatin based on the timing of adverse event onset. The maximum tolerated dose (MTD) of iniparib was not identified. Moderate to high variability in plasma exposure was noted for iniparib and all metabolites between animals. When quantifiable, iniparib and metabolite plasma:tumor ratios were < 0.088 and <1.7, respectively. In this study, iniparib was well tolerated as a single agent and in combination with carboplatin over a range of doses. However, clinically relevant concentrations of the parent drug and selected metabolites were not detectable in canine tumor tissues at any studied dose, thus eliminating expectations for clinical responses in dogs or humans. Negative clinical trials in humans, and the uncertainties of its mechanism of action, ultimately led to the decision to stop clinical development of the drug. Nevertheless, the questions that can be asked and answered within the comparative oncology approach are evident from this successfully executed comparative clinical trial and exemplify the value of such studies in drug development.
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Affiliation(s)
- Corey Saba
- College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Melissa Paoloni
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Christina Mazcko
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America
| | - William Kisseberth
- College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Jenna H. Burton
- College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, Colorado, United States of America
| | - Annette Smith
- College of Veterinary Medicine, Auburn University, Auburn, Alabama, United States of America
| | - Heather Wilson-Robles
- College of Veterinary Medicine, Texas A&M University, College Station, Texas, United States of America
| | - Sara Allstadt
- School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - David Vail
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Carolyn Henry
- College of Veterinary Medicine, University of Missouri-Columbia, Columbia, Missouri, United States of America
| | - Susan Lana
- College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, Colorado, United States of America
| | - E. J. Ehrhart
- College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, Colorado, United States of America
| | - Brad Charles
- College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, Colorado, United States of America
| | - Michael Kent
- School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - Jessica Lawrence
- College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Kristine Burgess
- School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, United States of America
| | - Antonella Borgatti
- College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Steve Suter
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Paul Woods
- Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Ira Gordon
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America
| | | | - Chand Khanna
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Amy K. LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America
- * E-mail:
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LeBlanc AK, Breen M, Choyke P, Dewhirst M, Fan TM, Gustafson DL, Helman LJ, Kastan MB, Knapp DW, Levin WJ, London C, Mason N, Mazcko C, Olson PN, Page R, Teicher BA, Thamm DH, Trent JM, Vail DM, Khanna C. Perspectives from man's best friend: National Academy of Medicine's Workshop on Comparative Oncology. Sci Transl Med 2016; 8:324ps5. [PMID: 26843188 PMCID: PMC7780241 DOI: 10.1126/scitranslmed.aaf0746] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Scientists gather to survey comparative oncology research and pinpoint potential contributions to human therapeutics.
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Affiliation(s)
- Amy K LeBlanc
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Matthew Breen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Peter Choyke
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mark Dewhirst
- Duke University School of Medicine and Duke Cancer Institute, Durham, NC 27710, USA
| | - Timothy M Fan
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802, USA
| | - Daniel L Gustafson
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1620, USA
| | - Lee J Helman
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Deborah W Knapp
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN 47907-2026, USA
| | | | - Cheryl London
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Nicola Mason
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Christina Mazcko
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Patricia N Olson
- Olson Consulting, Animal Health and Welfare, Fort Collins, CO 80528, USA
| | - Rodney Page
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1620, USA
| | - Beverly A Teicher
- Molecular Pharmacology Branch, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD 20892, USA
| | - Douglas H Thamm
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1620, USA
| | - Jeffrey M Trent
- Translational Genomics Research Institute (TGen), Phoenix, AZ 85004, USA
| | - David M Vail
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Chand Khanna
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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LeBlanc AK, Mazcko CN, Khanna C. Defining the Value of a Comparative Approach to Cancer Drug Development. Clin Cancer Res 2015; 22:2133-8. [PMID: 26712689 DOI: 10.1158/1078-0432.ccr-15-2347] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 12/02/2015] [Indexed: 12/24/2022]
Abstract
Comparative oncology as a tool in drug development requires a deeper examination of the value of the approach and examples of where this approach can satisfy unmet needs. This review seeks to demonstrate types of drug development questions that are best answered by the comparative oncology approach. We believe common perceived risks of the comparative approach relate to uncertainty of how regulatory bodies will prioritize or react to data generated from these unique studies conducted in diseased animals, and how these new data will affect ongoing human clinical trials. We contend that it is reasonable to consider these data as potentially informative and valuable to cancer drug development, but as supplementary to conventional preclinical studies and human clinical trials particularly as they relate to the identification of drug-associated adverse events. Clin Cancer Res; 22(9); 2133-8. ©2015 AACR.
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Affiliation(s)
- Amy K LeBlanc
- Comparative Oncology Program, Center for Cancer Research, NCI, NIH, Bethesda, Maryland.
| | - Christina N Mazcko
- Comparative Oncology Program, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Chand Khanna
- Comparative Oncology Program, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
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LeBlanc AK, Naik S, Galyon GD, Jenks N, Steele M, Peng KW, Federspiel MJ, Donnell R, Russell SJ. Safety studies on intravenous administration of oncolytic recombinant vesicular stomatitis virus in purpose-bred beagle dogs. HUM GENE THER CL DEV 2014; 24:174-81. [PMID: 24219832 DOI: 10.1089/humc.2013.165] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
VSV-IFNβ-NIS is a novel recombinant oncolytic vesicular stomatitis virus (VSV) with documented efficacy and safety in preclinical murine models of cancer. To facilitate clinical translation of this promising oncolytic therapy in patients with disseminated cancer, we are utilizing a comparative oncology approach to gather data describing the safety and efficacy of systemic VSV-IFNβ-NIS administration in dogs with naturally occurring cancer. In support of this, we executed a dose-escalation study in purpose-bred dogs to determine the maximum tolerated dose (MTD) of systemic VSV-hIFNβ-NIS, characterize the adverse event profile, and describe routes and duration of viral shedding in healthy, immune-competent dogs. The data indicate that an intravenous dose of 10(10) TCID50 is well tolerated in dogs. Expected adverse events were mild to moderate fever, self-limiting nausea and vomiting, lymphopenia, and oral mucosal lesions. Unexpected adverse events included prolongation of partial thromboplastin time, development of bacterial urinary tract infection, and scrotal dermatitis, and in one dog receiving 10(11) TCID50 (10 × the MTD), the development of severe hepatotoxicity and symptoms of shock leading to euthanasia. Viral shedding data indicate that detectable viral genome in blood diminishes rapidly with anti-VSV neutralizing antibodies detectable in blood as early as day 5 postintravenous virus administration. While low levels of viral genome copies were detectable in plasma, urine, and buccal swabs of dogs treated at the MTD, no infectious virus was detectable in plasma, urine, or buccal swabs at any of the doses tested. These studies confirm that VSV can be safely administered systemically in dogs, justifying the use of oncolytic VSV as a novel therapy for the treatment of canine cancer.
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Affiliation(s)
- Amy K LeBlanc
- 1 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN 37996
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Abstract
Veterinarians have gained increasing access to positron emission tomography (PET and PET/CT) imaging facilities, allowing them to use this powerful molecular imaging technique for clinical and research applications. SPECT is currently being used more in Europe than in the United States and has been shown to be useful in veterinary oncology and in the evaluation of orthopedic diseases. SPECT brain perfusion and receptor imaging is used to investigate behavioral disorders in animals that have interesting similarities to human psychiatric disorders. This article provides an overview of the potential applications of PET and SPECT. The use of commercially available and investigational PET radiopharmaceuticals in the management of veterinary disease has been discussed. To date, most of the work in this field has utilized the commercially available PET tracer, (18)F-fluorodeoxyglucose for oncologic imaging. Normal biodistribution studies in several companion animal species (cats, dogs, and birds) have been published to assist in lesion detection and interpretation for veterinary radiologists and clinicians. Studies evaluating other (18)F-labeled tracers for research applications are underway at several institutions and companion animal models of human diseases are being increasingly recognized for their value in biomarker and therapy development. Although PET and SPECT technologies are in their infancy for clinical veterinary medicine, increasing access to and interest in these applications and other molecular imaging techniques has led to a greater knowledge and collective body of expertise for veterinarians worldwide. Initiation and fostering of physician-veterinarian collaborations are key components to the forward movement of this field.
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Affiliation(s)
- Amy K LeBlanc
- Department of Small Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Veterinary Teaching Hospital, Knoxville, TN.
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Williams LM, Morandi F, Osborne DR, Narak J, LeBlanc AK. Kinetic analysis of 2-([(18)F]fluoro)-2-deoxy-d-glucose uptake in brains of anesthetized healthy dogs. Am J Vet Res 2014; 75:588-94. [PMID: 24866515 DOI: 10.2460/ajvr.75.6.588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To assess kinetic 2-([(18)F]fluoro)-2-deoxy-d-glucose ((18)FDG) uptake in the brain of anesthetized healthy adult dogs by use of positron emission tomography (PET) and to determine whether (18)FDG uptake differs among anatomic regions of the brain. ANIMALS 5 healthy Beagles. PROCEDURES Each isoflurane-anesthetized dog was administered (18)FDG IV (dose range, 3.0 to 5.2 mCi), and PET data were acquired for 2 hours. A CT scan (without contrast agent administration) was performed to allow more precise neuroanatomic localization. Defined regions of interest within the brain were drawn on reconstructed image data. Standard uptake values (SUVs) for (18)FDG were calculated to generate time-activity curves and determine time to peak uptake. RESULTS Time-activity curve analysis identified 4 regional uptake patterns: olfactory, gray matter, white matter, and other (brainstem, cerebellum, and occipital and frontal regions). The highest maximum SUVs were identified in the olfactory bulbs and cerebral gray matter, and the lowest maximum SUV was identified in cerebral white matter. Mean time to peak uptake ranged from 37.8 minutes in white matter to 82.7 minutes in the olfactory bulbs. CONCLUSIONS AND CLINICAL RELEVANCE Kinetic analysis of (18)FDG uptake revealed differences in uptake values among anatomic areas of the brain in dogs. These data provide a baseline for further investigation of (18)FDG uptake in dogs with immune-mediated inflammatory brain disease and suggest that (18)FDG-PET scanning has potential use for antemortem diagnosis without histologic analysis and for monitoring response to treatment. In clinical cases, a 1-hour period of PET scanning should provide sufficient pertinent data.
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Affiliation(s)
- Lindsay M Williams
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996
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LeBlanc AK, Morandi F. Invited review--Off-site PET imaging programs: challenges and opportunities. Vet Radiol Ultrasound 2013; 55:109-12. [PMID: 24102994 DOI: 10.1111/vru.12103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 07/21/2013] [Indexed: 11/29/2022] Open
Abstract
Veterinarians are gaining interest in and access to Position Emission Tomography (PET and PET/CT) imaging for both clinical and research applications. This manuscript provides an overview of how veterinarians may approach the use of off-site PET and PET/CT scanners already in use for human medical imaging in order to gain access to this technology without direct investment in costly equipment and infrastructure. An overview of general procedures, animal transport, and radiation safety considerations is offered along with references to key regulatory statutes that may apply to the operation of PET imaging facilities in individual states.
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Affiliation(s)
- Amy K LeBlanc
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, 37996
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Rowe JA, Morandi F, Wall JS, Akula M, Kennel SJ, Osborne D, Martin EB, Galyon GD, Long MJ, Stuckey AC, LeBlanc AK. Whole-body biodistribution of 3'-deoxy-3'-[(18) f]fluorothymidine ((18) FLT) in healthy adult cats. Vet Radiol Ultrasound 2013; 54:299-306. [PMID: 23464567 DOI: 10.1111/vru.12024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 01/30/2013] [Accepted: 01/30/2013] [Indexed: 11/28/2022] Open
Abstract
Positron emission tomography/computed tomography (PET/CT) utilizing 3'-deoxy-3'-[(18) F]fluorothymidine ((18) FLT), a proliferation tracer, has been found to be a useful tool for characterizing neoplastic diseases and bone marrow function in humans. As PET and PET/CT imaging become increasingly available in veterinary medicine, knowledge of radiopharmaceutical biodistribution in veterinary species is needed for lesion interpretation in the clinical setting. The purpose of this study was to describe the normal biodistribution of (18) FLT in adult domestic cats. Imaging of six healthy young adult castrated male cats was performed using a commercially available PET/CT scanner consisting of a 64-slice helical CT scanner with an integrated whole-body, high-resolution lutetium oxy-orthosilicate (LSO) PET scanner. Cats were sedated and injected intravenously with 108.60 ± 2.09 (mean ± SD) MBq of (18) FLT (greater than 99% radiochemical purity by high-performance liquid chromatography). Imaging was performed in sternal recumbency under general anesthesia. Static images utilizing multiple bed positions were acquired 80.83 ± 7.52 (mean ± SD) minutes post-injection. Regions of interest were manually drawn over major parenchymal organs and selected areas of bone marrow and increased tracer uptake. Standardized uptake values were calculated. Notable areas of uptake included hematopoietic bone marrow, intestinal tract, and the urinary and hepatobiliary systems. No appreciable uptake was observed within brain, lung, myocardium, spleen, or skeletal muscle. Findings from this study can be used as baseline data for future studies of diseases in cats.
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Affiliation(s)
- Joshua A Rowe
- Biomedical and Diagnostic Sciences, College of Veterinary Medicine, 2407 River Drive, The University of Tennessee , Knoxville, TN 37996, USA.
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Jones MP, Morandi F, Wall JS, Long MJ, Stuckey AC, LeBlanc AK. Distribution of 2-deoxy-2-fluoro-d-glucose in the coelom of healthy bald eagles (Haliaeetus leucocephalus). Am J Vet Res 2013; 74:426-32. [PMID: 23438118 DOI: 10.2460/ajvr.74.3.426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine 2-deoxy-2-fluoro (fluorine 18)-d-glucose ((18)FDG) biodistribution in the coelom of bald eagles (Haliaeetus leucocephalus). ANIMALS 8 healthy adult bald eagles. PROCEDURES For each eagle, whole-body transmission noncontrast CT, 60-minute dynamic positron emission tomography (PET) of the celomic cavity (immediately after (18)FDG injection), whole-body static PET 60 minutes after (18)FDG injection, and whole-body contrast CT with iohexol were performed. After reconstruction, images were analyzed. Regions of interest were drawn over the ventricular myocardium, liver, spleen, proventriculus, cloaca, kidneys, and lungs on dynamic and static PET images. Standardized uptake values were calculated. RESULTS Kidneys had the most intense (18)FDG uptake, followed by cloaca and intestinal tract; liver activity was mild and slightly more intense than that of the spleen; proventricular activity was always present, whereas little to no activity was identified in the wall of the ventriculus. Activity in the myocardium was present in all birds but varied in intensity among birds. The lungs had no visibly discernible activity. Mean ± SD standardized uptake values calculated with representative regions of interest at 60 minutes were as follows: myocardium, 1. 6 ± 0.2 (transverse plane) and 1.3 ± 0.3 (sagittal plane); liver, 1.1 ± 0.1; spleen, 0.9 ± 0.1; proventriculus, 1.0 ± 0.1; cloaca, 4.4 ± 2.7; right kidney, 17.3 ± 1.0; left kidney, 17.6 ± 0.3; and right and left lungs (each), 0.3 ± 0.02. CONCLUSIONS AND CLINICAL RELEVANCE The study established the biodistribution of (18)FDG in adult eagles, providing a baseline for clinical investigation and future research.
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Affiliation(s)
- Michael P Jones
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA.
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LeBlanc AK, LeBlanc CJ, Rohrbach BW, Kania SA. Serial evaluation of neutrophil function in tumour-bearing dogs undergoing chemotherapy. Vet Comp Oncol 2013; 13:20-7. [PMID: 23331512 DOI: 10.1111/vco.12015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/04/2012] [Accepted: 12/04/2012] [Indexed: 11/28/2022]
Abstract
We hypothesized that neutrophil function in tumour-bearing dogs is negatively impacted by chemotherapy. Flow cytometric techniques were used to assess neutrophil oxidative burst and phagocytic activities at baseline, 7 and 21 days after induction chemotherapy in 20 dogs with lymphoma. Dogs had a lower percentage of neutrophils exhibiting oxidative burst activity after stimulation with Escherichia coli (day 7; P = 0.009) and phorbol 12-myristate 13-acetate (PMA) (days 7 and 21; P = 0.0003 and P = 0.01, respectively), compared with healthy controls. From day 0 to 7, the percentage of neutrophils exhibiting oxidative burst activity decreased after stimulation with E. coli (P = 0.016) and PMA (P = 0.0006). Induction chemotherapy suppresses the percentage of neutrophils capable of oxidative burst in dogs with lymphoma, with improvement in phagocytic activity over time (P = 0.03). The impact of neutrophil dysfunction on incidence and severity of sepsis in dogs receiving chemotherapy should be investigated.
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Affiliation(s)
- A K LeBlanc
- Department of Small Animal Clinical Sciences, The University of Tennessee, Knoxville, TN, USA
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LeBlanc AK, Miller AN, Galyon GD, Moyers TD, Long MJ, Stuckey AC, Wall JS, Morandi F. PRELIMINARY EVALUATION OF SERIAL 18FDG-PET/CT TO ASSESS RESPONSE TO TOCERANIB PHOSPHATE THERAPY IN CANINE CANCER. Vet Radiol Ultrasound 2012; 53:348-57. [DOI: 10.1111/j.1740-8261.2012.01925.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 01/09/2012] [Indexed: 01/09/2023] Open
Affiliation(s)
| | - Ashley N. Miller
- Department of Small Animal Clinical Sciences; University of Tennessee College of Veterinary Medicine; Knoxville; TN 37996
| | - Gina D. Galyon
- Department of Small Animal Clinical Sciences; University of Tennessee College of Veterinary Medicine; Knoxville; TN 37996
| | - Tamberlyn D. Moyers
- Department of Small Animal Clinical Sciences; University of Tennessee College of Veterinary Medicine; Knoxville; TN 37996
| | - Misty J. Long
- Molecular Imaging and Translational Research Program; University of Tennessee Graduate School of Medicine; Knoxville; TN 37996
| | - Alan C. Stuckey
- Molecular Imaging and Translational Research Program; University of Tennessee Graduate School of Medicine; Knoxville; TN 37996
| | - Jonathan S. Wall
- Molecular Imaging and Translational Research Program; University of Tennessee Graduate School of Medicine; Knoxville; TN 37996
| | - Federica Morandi
- Department of Small Animal Clinical Sciences; University of Tennessee College of Veterinary Medicine; Knoxville; TN 37996
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Pokorny E, Hecht S, Sura PA, LeBlanc AK, Phillips J, Conklin GA, Haifley KA, Newkirk K. MAGNETIC RESONANCE IMAGING OF CANINE MAST CELL TUMORS. Vet Radiol Ultrasound 2011; 53:167-73. [DOI: 10.1111/j.1740-8261.2011.01897.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Esteban Pokorny
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Silke Hecht
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Patricia A. Sura
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Amy K. LeBlanc
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Jeffrey Phillips
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Gordon A. Conklin
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Katherine A. Haifley
- Department of Small Animal Clinical Sciences; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
| | - Kim Newkirk
- Department of Pathobiology; C247 Veterinary Medical Center; University of Tennessee College of Veterinary Medicine; Knoxville; TN; 37996-4544
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Schleis SE, Rizzo SA, Phillips JC, LeBlanc AK. Asparaginase-associated pancreatitis in a dog. Can Vet J 2011; 52:1009-1012. [PMID: 22379203 PMCID: PMC3157059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A dog with lymphosarcoma was evaluated for vomiting, lethargy, and abdominal pain 48 h after treatment with L-asparaginase. Based on drug administration, clinical signs, bloodwork, and elevated canine pancreatic lipase immunoreactivity, L-asparaginase-associated pancreatitis was diagnosed. This is an acknowledged toxicity; however, its pathophysiology and incidence rate in veterinary patients are unknown and sparsely documented.
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Affiliation(s)
- Stephanie E Schleis
- Department of Clinical Sciences, College of Veterinary Medicine, Auburn University Hoerlein Hall, Auburn, Alabama 36849, USA.
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Abstract
BACKGROUND Peripheral blood neutrophils of untreated human cancer patients have been shown to have normal, increased, and decreased phagocytic activity, killing capacity, and/or oxidative burst activities. OBJECTIVES The objectives of this study were to evaluate oxidative burst and phagocytic activities of peripheral blood neutrophils from tumor-bearing dogs before therapy and compare them with neutrophil function of healthy control dogs. METHODS Heparinized whole blood was obtained from dogs with high-grade lymphoma (n=23), sarcoma (n=13), or carcinoma (n=11), and healthy control dogs (n=11) for flow cytometric evaluation of oxidative burst and phagocytic activities. Percentage of bursting cells and amount of oxidative burst activity were determined after stimulation with phorbol 12-myristate 13-acetate (PMA) or Escherichia coli. Percentage of phagocytic cells and amount of phagocytic activity were determined after incubation with fluorescent E. coli. RESULTS Compared with control dogs, dogs with sarcoma (P=.004) and carcinoma (P=.05) had a lower percentage of neutrophils exhibiting oxidative burst activity after stimulation with PMA. Phagocytic activity was significantly lower in dogs with sarcomas compared with control dogs (P<.0001) and dogs with lymphoma (P=.01). CONCLUSIONS Untreated carcinomas and sarcomas in dogs may suppress the percentage of neutrophils capable of oxidative burst when stimulated by PMA. Furthermore, sarcomas also may suppress the amount of phagocytic activity per neutrophil. Until further studies can be performed, the clinical significance of these findings is unknown.
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Affiliation(s)
- Casey J LeBlanc
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA.
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Schleis SE, LeBlanc AK, Neilsen NR, LeBlanc CJ. Flow cytometric evaluation of multidrug resistance proteins on grossly normal canine nodal lymphocyte membranes. Am J Vet Res 2008; 69:1310-5. [DOI: 10.2460/ajvr.69.10.1310] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Affiliation(s)
- Jo R Smith
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Abstract
This article presents an update on the recent advances made in veterinary advanced imaging specifically with regard to cross-sectional modalities (CT and MRI) and nuclear medicine (positron emission tomography [PET] and PET/CT). A brief summary of technical improvements and a review of recent literature are included to provide an overview of the progress made in this important element of the practicing veterinary oncologist's repertoire. An in-depth summary of PET is also included to introduce the technical aspects and potential clinical and research applications of this novel imaging modality in veterinary medicine.
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Affiliation(s)
- Amy K LeBlanc
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, C247 Veterinary Teaching Hospital, Knoxville, TN 37996-4544, USA.
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LeBlanc AK, Cox SK, Kirk CA, Newman SJ, Bartges JW, Legendre AM. Effects of L-asparaginase on plasma amino acid profiles and tumor burden in cats with lymphoma. J Vet Intern Med 2007; 21:760-3. [PMID: 17708396 DOI: 10.1892/0891-6640(2007)21[760:eolopa]2.0.co;2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND L-Asparaginase (Elspar(a)), is an Escherichia coli-derived enzyme that depletes lymphoma cells of asparagine, inhibiting protein synthesis and resulting in cell death. The single agent response rate in cats with lymphoma and impact of L-asparaginase on plasma amino acid concentrations is unknown. HYPOTHESES L-Asparaginase significantly reduces plasma asparagine concentrations and has demonstrable efficacy against untreated lymphoma in cats. ANIMALS Thirteen cats with confirmed lymphoma (LSA) of any anatomic site were given 1 dose 400 IU/kg IM) of L-asparaginase for initial LSA treatment. METHODS Plasma collected at 0, 2, and 7 days after L-asparaginase therapy was assayed for ammonia, asparagine, aspartic acid, glutamine, and glutamic acid concentrations. Cats were restaged 7 days later to assess tumor response. RESULTS Eight cats had T-cell LSA, 4 cats had B-cell LSA, and 1 cat's immunophenotype was unknown. Two complete and 2 partial responses to L-asparaginase were seen. Four cats had stable disease, and 5 cats had progressive disease. Ammonia and aspartic acid concentrations were increased from baseline at 2 and 7 days posttreatment. Asparagine concentrations were decreased from baseline at 2 days but not 7 days posttreatment. Glutamic acid concentrations were increased at day 2 compared to day 7 posttreatment but not compared to baseline. Glutamine concentrations were unchanged. CONCLUSIONS AND CLINICAL IMPORTANCE L-asparaginase significantly reduced asparagine concentrations within 2 days of treatment, but this effect was lost within 7 days. The apparent overall response rate of feline LSA to L-asparaginase in this study was 30%.
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Affiliation(s)
- A K LeBlanc
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, The University of Tennessee, C247 Veterinary Teaching Hospital, 2407 River Drive, Knoxville, TN 37996-4544, USA.
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Skorupski KA, Clifford CA, Paoloni MC, Lara-Garcia A, Barber L, Kent MS, LeBlanc AK, Sabhlok A, Mauldin EA, Shofer FS, Couto CG, Sørenmo KU. CCNU for the treatment of dogs with histiocytic sarcoma. J Vet Intern Med 2007; 21:121-6. [PMID: 17338159 DOI: 10.1892/0891-6640(2007)21[121:cfttod]2.0.co;2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Histiocytic sarcoma is an aggressive neoplasm of dendritic cells that carries a grave prognosis. The efficacy of chemotherapy against this disease is unknown. The purpose of this study was to determine the efficacy of 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) in dogs with incompletely resected or metastatic histiocytic sarcoma, to describe the clinical characteristics of these dogs, and to identify factors affecting prognosis. HYPOTHESIS Our hypothesis is that CCNU has activity against canine histiocytic sarcoma and can improve survival in dogs with advanced disease. ANIMALS Included in analysis are dogs diagnosed with histiocytic sarcoma who had gross measurable or residual microscopic disease and who received CCNU. METHODS A multi-institutional, retrospective, single-arm cohort study was conducted. Available biopsy samples were tested with an antibody against CD18 when possible to confirm the diagnosis of histiocytic sarcoma. RESULTS Fifty-nine dogs were treated at 8 institutions. Twenty-three tumor specimens were confirmed to be CD18 positive. Treatment with CCNU at 60 to 90 mg/m2 resulted in an overall response rate of 46% in the 56 dogs with gross measurable disease. All 3 dogs with minimal residual disease experienced tumor relapse but lived 433 days or more after starting CCNU. The median survival of all 59 dogs was 106 days. Thrombocytopenia (< 100,000 platelets/microL) and hypoalbuminemia were found to be negatively associated with prognosis and were predictive of < 1 month survival. CONCLUSIONS AND CLINICAL IMPORTANCE Results suggest that CCNU is active against canine histiocytic sarcoma and may be useful in the treatment of dogs without negative prognostic factors.
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Affiliation(s)
- Katherine A Skorupski
- Departments of Clinical Studies, Matthew J. Ryan Veterinary Hospital, University of Pennsylvania Philadelphia, USA.
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Skorupski KA, Clifford CA, Paoloni MC, Lara-Garcia A, Barber L, Kent MS, LeBlanc AK, Sabhlok A, Mauldin EA, Shofer FS, Couto CG, Sørenmo KU. CCNU for the Treatment of Dogs with Histiocytic Sarcoma. J Vet Intern Med 2007. [DOI: 10.1111/j.1939-1676.2007.tb02937.x] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Smrkovski OA, LeBlanc AK, Smith SH, LeBlanc CJ, Adams WH, Tobias KM. Carcinoma ex pleomorphic adenoma with sebaceous differentiation in the mandibular salivary gland of a dog. Vet Pathol 2006; 43:374-7. [PMID: 16672588 DOI: 10.1354/vp.43-3-374] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A carcinoma ex pleomorphic adenoma was diagnosed in the left mandibular salivary gland of an 8-year-old female spayed dog. The animal presented with a large nonpainful swelling in the left submandibular region. A computed tomography scan detected an irregularly enhancing soft tissue mass that was closely associated with the left external ear canal and extended to the left wing of the atlas. On surgical exploration, the mass was intimately associated with the left mandibular salivary gland. Both the mass and the adjacent gland were removed, and the diagnosis was determined by histopathology. The tumor was comprised of basaloid and low columnar epithelial cells, many glandular units formed by well-differentiated sebocytes, and multifocal regions of necrosis, mineralization, and hemorrhage. Salivary gland tumors with sebaceous differentiation are very rare in animals, with one previously reported case in a cat.
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Affiliation(s)
- O A Smrkovski
- The University of Tennessee, College of Veterinary Medicine, Small Animal Clinical Sciences, C247 Veterinary Teaching Hospital, 2407 River Dr., Knoxville, TN 37996, USA
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LeBlanc AK, LaDue TA, Turrel JM, Klein MK. Unexpected toxicity following use of gemcitabine as a radiosensitizer in head and neck carcinomas: a veterinary radiation therapy oncology group pilot study. Vet Radiol Ultrasound 2004; 45:466-70. [PMID: 15487572 DOI: 10.1111/j.1740-8261.2004.04080.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Gemcitabine (2',2'-difluorodeoxycytidine) was given intravenously twice weekly to 10 cats with oral squamous cell carcinoma and 15 dogs with nasal carcinoma undergoing radiotherapy as a radiosensitizing agent. The average total radiation dose was 50 Gy for dogs and 54 Gy for cats given Monday-Friday (planned dose of 54 and 57 Gy, respectively). Dogs received an average of five doses of gemcitabine beginning at 50 mg/m2, and cats received an average of five doses of gemcitabine beginning at 25 mg/m2. Twelve of 15 dogs and five of 10 cats required chemotherapy dose reduction or postponement because of hematologic or normal tissue toxicity. The results herein do not support the use of gemcitabine at the studied dose and schedule, as significant hematologic and local tissue toxicity was observed in the studied patients. Pharmacokinetic data are necessary to best define the efficacy and optimal dose and schedule of gemcitabine in combination with traditional radiotherapy.
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Affiliation(s)
- Amy K LeBlanc
- Florida Veterinary Specialists, 3000 Busch Lake Blvd., Tampa, FL 33614, USA.
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