Gene expression analysis in canine epitheliotropic lymphoma - discovery cohort
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ABSTRACT:
PROVIDER: PRJNA873101 | ENA |
REPOSITORIES: ENA
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Project description:We performed targeted transcriptomic analysis on archival biopsies from client-owned dogs to examine immune and skin gene expression profiles in spontaneous canine epitheliotropic lymphoma (EL).
2023-10-26 | GSE211988 | GEO
Project description:Gene expression analysis in canine epitheliotropic lymphoma - validation cohort
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Project description:We performed targeted transcriptomic analysis on archival biopsies from client-owned dogs to examine immune and skin gene expression profiles in spontaneous canine epitheliotropic lymphoma (EL).
2023-10-26 | GSE213086 | GEO
Project description:Tumor tissues from canine lymphomas with accompanying survival and breed data. Gene expression analysis of samples representing common histologic subtypes of canine lymphoma.
2012-12-10 | E-GEOD-39365 | biostudies-arrayexpress
Project description:Gene expression analysis in canine epitheliotropic lymphoma
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Project description:Canine lymphoma is the most common hematological cancer in dogs and shares many molecular and clinical characteristics with human Non-Hodgkin lymphoma (NHL). The standard treatment for canine lymphoma is the “CHOP” sequential multiagent chemotherapy protocol consisting of Cyclophosphamide, Doxorubicin (Hydroxydaunorubicin), Vincristine (Oncovin™), and Prednisone. Approximately 70 - 85% of patients treated with CHOP achieve clinical remission. However, duration of remission varies and the majority of dogs eventually relapse. To identify possible biomarkers for patients failing to achieve remission in response to CHOP, we performed RNA-Seq analysis on 25 cases of canine lymphoma taken at the start of their CHOP therapy regime, and determined patient progression free survival (PFS).
2020-01-01 | GSE130874 | GEO
Project description:We performed a veterinary clinical oncology trial in client-owned dogs to determine if immune modulating drugs could be combined in rational approaches to treat spontaneous canine diffuse large B cell lymphoma (DLBCL).
2023-08-29 | GSE213088 | GEO
Project description:Introduction: Lymphoma is a common canine cancer with translational relevance to human disease. Diffuse large B-cell lymphoma (DLBCL) is the most frequent subtype, contributing to almost fifty percent of clinically recognized lymphoma cases. Identifying new biomarkers capable of early diagnosis and monitoring DLBCL is crucial for enhancing remission rates. This research seeks to advance our knowledge of the molecular biology of DLBCL by analyzing the expression of microRNAs, which regulate gene expression by negatively impacting gene expression via targeted RNA degradation or translational re-pression. The stability and accessibility of microRNAs make them appropriate biomarkers for the diagnosis, prognosis, and monitoring of diseases. Methods: We extracted and sequenced microRNAs from ten fresh-frozen lymph node tissue samples (six DLBCL and four non-neoplastic). Results: Small RNA sequencing data analysis revealed 35 differently expressed miRNAs (DEMs) compared to controls. RT-qPCR confirmed that 23/35 DEMs in DLBCL were significantly upregulated (n = 14) or downregulated (n = 9). Statistical significance was determined by comparing each miRNA's average expression fold-change (2-Cq) between the DLCBL and healthy groups by applying the unpaired parametric Welch's 2-sample t-test and false discovery rate (FDR). The predicted target genes of the DEMs were mainly enriched in the PI3K-Akt-MAPK pathway. Discussion: Our data point to the potential value of miRNA signatures as diagnostic biomarkers and serve as a guideline for subsequent experimental studies to determine the targets and functions of these altered miRNAs in canine DLBCL.
2023-08-30 | GSE240893 | GEO
Project description:In this study, we present the first comparison of global transcriptional changes taking place in canine lymphoma and human diffuse large B-cell lymphoma (DLBCL), with particular reference to the nuclear factor-kappaB (NF-κB) pathway. Microarray data generated from lymph nodes diagnosed with canine DLBCL and healthy lymph nodes were used for differential expression analysis, co-expression analysis and pathway analysis, and compared with analysis of publicly available microarray data from human healthy and DLBCL lymph nodes. The comparisons between species at gene level were performed by mapping the probesets in canine microarrays to orthologous genes in humans and vice versa. A considerable number of differentially expressed genes between canine lymphoma and healthy lymph node samples were also found differentially expressed between human DLBCL and healthy lymph node samples. Principal component analysis (PCA) using a literature derived 120 NF-κB target gene set mapped to 199 orthologous canine array probesets and 259 human array probesets clearly separated the healthy and cancer samples in both canine and human datasets. The analysis demonstrated that for both human and canine DLBCL there is activation of the NF-κB/p65 canonical pathway rather than the alternative pathway. This has therapeutic implications for the use of specific pathway inhibitors for the treatment of DLBCL for both species and also indicates that naturally occurring canine lymphoma could be used as a model to study therapeutic strategies for human lymphoma. The model was further validated by the identification of molecular signatures that could sub-classify canine DLBCL into activated B-cell-like (ABC) or germinal centre B-cell-like (GCB) types equivalent to human subtypes.
2013-09-26 | GSE30881 | GEO
Project description:Targeting PRMT5 in canine lymphoma: we characterized expression patterns of PRMT5 in canine lymphomas and correlated these with histological subtypes using tissue microarrays. We characterized expression of PRMT5 in three canine lymphoma-derived cell lines and primary lymph node biopsies. We have demonstrated that inhibition of PRMT5 leads to growth suppression and induction of apoptosis in canine lymphoma cell lines and primary canine lymphoma cells in a time and dose-dependent manner, while selectively decreasing global marks of symmetric dimethylarginine (SDMA) and histone H4 arginine 3 symmetric di-methylation. We performed ATAC-sequencing with pathway enrichment analysis to characterize genome-wide changes in chromatin accessibility after PRMT5 inhibition. We performed gene expression microarrays with pathway analysis to characterize whole transcriptome changes in canine lymphoma cell lines treated with PRMT5 inhibitors. This work validates PRMT5 as a promising therapeutic target for canine lymphoma and supports the continued used of the spontaneously occurring canine lymphoma model for the preclinical development of PRMT5 inhibitors for the treatment of human NHL.
2021-04-20 | GSE155599 | GEO