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A bitesize introduction to canine hematologic malignancies. Blood Adv 2022; 6:4073-4084. [PMID: 35316831 PMCID: PMC9278293 DOI: 10.1182/bloodadvances.2021005045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/09/2022] [Indexed: 11/20/2022] Open
Abstract
Hematologic malignancies are frequently diagnosed in dogs and result in a spectrum of clinical signs associated with specific disease types. The most frequently encountered hematologic tumors in dogs include lymphoma, lymphoid and myeloid leukemias, and mast cell, plasma cell, and histiocytic neoplasias. Coupled with the heterogeneous presentations of the different categories and subtypes of canine hematologic malignancies, outcomes for these tumors are also variable. Considering this, appropriate treatment options range from active surveillance to curative intent approaches harnessing surgical, chemotherapeutic, and radiation-based modalities. The underlying pathology of many of these diseases bears remarkable resemblance to that of the corresponding diagnosis made in human patients. We introduce some of the pathogenic drivers of canine hematologic cancers alongside their clinical presentations. An overview of standard-of-care therapies for each of these diseases is also provided. As comparative oncology gains recognition as a valuable setting in which to investigate the pathogenesis of neoplasia and provide powerful, clinically relevant, immunocompetent models for the evaluation of novel therapies, the number of clinicians and scientists participating in cancer research involving dogs is expected to increase. This review aims at providing an introductory overview of canine hematologic malignancies.
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Thomas R, Pontius JU, Borst LB, Breen M. Development of a Genome-Wide Oligonucleotide Microarray Platform for Detection of DNA Copy Number Aberrations in Feline Cancers. Vet Sci 2020; 7:vetsci7030088. [PMID: 32645884 PMCID: PMC7560183 DOI: 10.3390/vetsci7030088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 12/18/2022] Open
Abstract
The utility of the domestic cat as a model system for biomedical studies was constrained for many years by the absence of a comprehensive feline reference genome sequence assembly. While such a resource now exists, the cat continues to lag behind the domestic dog in terms of integration into the ‘One Health’ era of molecular medicine. Stimulated by the advances being made within the evolving field of comparative cancer genomics, we developed a microarray platform that allows rapid and sensitive detection of DNA copy number aberrations in feline tumors using comparative genomic hybridization analysis. The microarray comprises 110,456 unique oligonucleotide probes anchored at mean intervals of 22.6 kb throughout the feline reference genome sequence assembly, providing ~350-fold higher resolution than was previously possible using this technique. We demonstrate the utility of this resource through genomic profiling of a feline injection-site sarcoma case, revealing a highly disrupted profile of DNA copy number imbalance involving several key cancer-associated genes including KIT,TP53, PTEN, FAS and RB1. These findings were supported by targeted fluorescence in-situ hybridization analysis, which identified major alterations in chromosome structure, including complex intrachromosomal reorganization events typical of those seen in aggressive soft-tissue sarcomas of other species. We then characterized a second mass that was identified at a nearby site in the same patient almost 12 months later. This mass demonstrated a remarkably conserved genomic profile consistent with a recurrence of the original tumor; however the detection of subtle differences reflected evolution of the tumor over time. These findings exemplify the diverse potential of this microarray platform to incorporate domestic cat cancers into comparative and translational research efforts in molecular oncology.
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Affiliation(s)
- Rachael Thomas
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA;
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27606, USA
- Correspondence:
| | - Joan U Pontius
- Laboratory of Genomic Diversity, Basic Research Program, Science Applications International Corporation-Frederick, Inc., National Cancer Institute-Frederick, Frederick, MD 21702, USA;
- Present address: JP Solutions, Ellicott City MD 21042, USA
| | - Luke B Borst
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA;
| | - Matthew Breen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA;
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27606, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27607, USA
- Cancer Genetics Program, UNC Lineberger Comprehensive Cancer Center, Chapel Hill, NC 27514, USA
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Giannuzzi D, Giudice L, Marconato L, Ferraresso S, Giugno R, Bertoni F, Aresu L. Integrated analysis of transcriptome, methylome and copy number aberrations data of marginal zone lymphoma and follicular lymphoma in dog. Vet Comp Oncol 2020; 18:645-655. [PMID: 32154977 DOI: 10.1111/vco.12588] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 02/10/2020] [Accepted: 03/05/2020] [Indexed: 12/17/2022]
Abstract
Marginal zone lymphoma (MZL) and follicular lymphoma (FL) are classified as indolent B-cell lymphomas in dogs. Aside from the clinical and histopathological similarities with the human counterpart, the molecular pathogenesis remains unclear. We integrated transcriptome, genome-wide DNA methylation and copy number aberration analysis to provide insights on the pathogenesis of canine MZL (n = 5) and FL (n = 7), also comparing them with diffuse large B-cell lymphoma (DLBCL). Transcriptome profiling highlighted the presence of similar biological processes affecting both histotypes, including BCR and TLR signalling pathways. However, FLs showed an enrichment of E2F targets, whereas MZLs were characterized by MYC-driven transcriptional activation signatures. FLs showed a distinctive loss on chr1 containing CEACAM23 and 24, conversely MZLs presented multiple recurrent gains on chr13, where MYC is located. The distribution of methylation peaks was similar between the two histotypes. Integrating data from the three omics, FLs resulted clearly separated from MZLs and DLBCL dataset. MZLs showed the enrichment of FoxM1 network and TLR associated TICAM1-dependent IRFs activation pathway. However, no specific signatures differentiated MZLs from DLBCLs. In conclusion, our study presents the first comprehensive analysis of molecular and epigenetic pathogenesis of canine FL and MZL.
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Affiliation(s)
- Diana Giannuzzi
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Luca Giudice
- Department of Computer Science, University of Verona, Verona, Italy
| | - Laura Marconato
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Serena Ferraresso
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Rosalba Giugno
- Department of Computer Science, University of Verona, Verona, Italy
| | - Francesco Bertoni
- Università della Svizzera italiana (USI), Institute of Oncology Research (IOR), Bellinzona, Switzerland
| | - Luca Aresu
- Department of Veterinary Science, University of Turin, Turin, Italy
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Avery AC. The Genetic and Molecular Basis for Canine Models of Human Leukemia and Lymphoma. Front Oncol 2020; 10:23. [PMID: 32038991 PMCID: PMC6992561 DOI: 10.3389/fonc.2020.00023] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/08/2020] [Indexed: 12/12/2022] Open
Abstract
Emerging details of the gene expression and mutational features of canine lymphoma and leukemia demonstrate areas of similarities and differences between disease subsets in the humans and dogs. Many features of canine diffuse large B-cell lymphoma resemble the ABC form of human DLBCL, including constitutive activation of the NF-kB pathway, and almost universal presence of double expressing MYC/BCL2 lymphomas. Frequent TRAF3 mutations and absence of BCL6 expression are differences with the human disease that need further exploration. Canine peripheral T-cell lymphoma is more common in dogs than in people and behaves in a similarly aggressive manner. Common features of canine and human PTCL include activation of the PI3 kinase pathways, loss of PTEN, and the tumor suppressor CDKN2. There is insufficient data available yet to determine if canine PTCL exhibits the GATA3-TBX21 dichotomy seen in people. Common to all forms of canine lymphoproliferative disease are breed-specific predilections for subsets of disease. This is particularly striking in PTCL, with the Boxer breed being dramatically overrepresented. Breed-specific diseases provide an opportunity for uncovering genetic and environmental risk factors that can aid early diagnosis and prevention.
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Affiliation(s)
- Anne C Avery
- Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Science, Colorado State University, Fort Collins, CO, United States
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Giannuzzi D, Marconato L, Cascione L, Comazzi S, Elgendy R, Pegolo S, Cecchinato A, Bertoni F, Aresu L, Ferraresso S. Mutational landscape of canine B-cell lymphoma profiled at single nucleotide resolution by RNA-seq. PLoS One 2019; 14:e0215154. [PMID: 31017932 PMCID: PMC6481796 DOI: 10.1371/journal.pone.0215154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 03/27/2019] [Indexed: 12/30/2022] Open
Abstract
The genomic landscape in human B-cell lymphoma has revealed several somatic mutations and potentially relevant germline alterations affecting therapy and prognosis. Also, mutations originally described as somatic aberrations have been shown to confer cancer predisposition when occurring in the germline. The relevance of mutations in canine B-cell lymphoma is scarcely known and gene expression profiling has shown similar molecular signatures among different B-cell histotypes, suggesting other biological mechanisms underlining differences. Here, we present a highly accurate approach to identify single nucleotide variants (SNVs) in RNA-seq data obtained from 62 completely staged canine B-cell lymphomas and 11 normal B-cells used as controls. A customized variant discovery pipeline was applied and SNVs were found in tumors and differentiated for histotype. A number of known and not previously identified SNVs were significantly associated to MAPK signaling pathway, negative regulation of apoptotic process and cell death, B-cell activation, NF-kB and JAK-STAT signaling. Interestingly, no significant genetic fingerprints were found separating diffuse large B-cell lymphoma from indolent lymphomas suggesting that differences of genetic landscape are not the pivotal causative factor of indolent behavior. We also detected several variants in expressed regions of canine B-cell lymphoma and identified SNVs having a direct impact on genes. Using this brand-new approach the consequence of a gene variant is directly associated to expression. Further investigations are in progress to deeply elucidate the mechanisms by which altered genes pathways may drive lymphomagenesis and a higher number of cases is also demanded to confirm this evidence.
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Affiliation(s)
- Diana Giannuzzi
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, Padua, Italy
- * E-mail:
| | - Laura Marconato
- Centro Oncologico Veterinario, Sasso Marconi, Bologna, Italy
| | - Luciano Cascione
- Università della Svizzera italiana (USI), Institute of Oncology Research (IOR), Bellinzona, Switzerland
- Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - Stefano Comazzi
- Department of Veterinary Medicine, University of Milan, Milan, Italy
| | - Ramy Elgendy
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Sara Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padua, Legnaro, Padua, Italy
| | - Alessio Cecchinato
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padua, Legnaro, Padua, Italy
| | - Francesco Bertoni
- Università della Svizzera italiana (USI), Institute of Oncology Research (IOR), Bellinzona, Switzerland
| | - Luca Aresu
- Department of Veterinary Science, University of Turin, Grugliasco, Turin, Italy
| | - Serena Ferraresso
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, Padua, Italy
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Richardson MA, Thaiwong T, Kiupel M. Primary Colorectal Follicular Lymphoma in 3 Dogs. Vet Pathol 2019; 56:404-408. [DOI: 10.1177/0300985818823775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Primary colorectal follicular lymphomas are rare indolent lymphoid neoplasms in humans that have not been reported in dogs. We describe 3 cases of primary colorectal follicular lymphoma in dogs with histologic and immunohistochemical features similar to their human counterpart. Initial clinical signs in all dogs included tenesmus, hematochezia, and a palpable rectal mass. Two dogs were castrated males and 1 an intact female, between 9 months and 2 years of age, and of varied breeds. All 3 cases of colorectal follicular lymphoma were characterized by proliferation of follicular germinal centers with no polarity or mantle zone and were composed of centrocytes admixed with fewer centroblasts. By immunohistochemistry, lymphoid cells expressed CD20, BCL2, and BCL6 and lacked expression of CD3, CD5, and cyclin D1. Polymerase chain reaction for rearrangements of the immunoglobulin heavy chain confirmed a monoclonal population in all cases. In 2 of the 3 cases, a solitary nodular colorectal mass was excised and appeared curative; however, the third case had multiple colorectal masses and the animal developed multicentric lymphoma. This case series immunohistochemically characterizes and distinguishes colorectal follicular lymphoma from atypical lymphoid hyperplasia.
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Affiliation(s)
- Michael A. Richardson
- Department of Pathobiology and Diagnostic Investigation, Veterinary Diagnostic Laboratory, Michigan State University, Lansing, MI, USA
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Tuddow Thaiwong
- Department of Pathobiology and Diagnostic Investigation, Veterinary Diagnostic Laboratory, Michigan State University, Lansing, MI, USA
| | - Matti Kiupel
- Department of Pathobiology and Diagnostic Investigation, Veterinary Diagnostic Laboratory, Michigan State University, Lansing, MI, USA
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Villarnovo D, McCleary-Wheeler AL, Richards KL. Barking up the right tree: advancing our understanding and treatment of lymphoma with a spontaneous canine model. Curr Opin Hematol 2017; 24:359-366. [PMID: 28426554 PMCID: PMC5553274 DOI: 10.1097/moh.0000000000000357] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE OF REVIEW Spontaneous lymphoma in pet dogs is increasingly recognized as an ideal model for studying the disease in humans and for developing new targeted therapeutics for patients. Increasing interest by funding agencies, the private sector, and multidisciplinary academic collaborations between different disciplines and sectors now enables large knowledge gaps to be addressed and provides additional proof-of-concept examples to showcase the significance of the canine model. RECENT FINDINGS The current review addresses the rationale for a canine lymphoma model including the valuable role it can play in drug development, serving as a link between mouse xenograft models and human clinical trials and the infrastructure that is now in place to facilitate these studies. Research in this field has focused on filling in the gaps to make the canine lymphoma model more robust. These advances have included work on biomarkers, detection of minimal residual disease, expansion of genomic and proteomic data, and immunotherapy. SUMMARY Incorporating pet dogs into the drug development pipeline can improve the efficiency and predictability of preclinical models and decrease the time and cost required for a therapeutic target to be translated into clinical benefit.
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Affiliation(s)
- Dania Villarnovo
- aDepartment of Biomedical Sciences bDepartment of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca cSandra and Edward Meyer Cancer Center dDivision of Hematology/Oncology, Weill Cornell Medicine, New York, New York, USA
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