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Toyoda H, Tani A, Goto-Koshino Y, Motegi T, Sakamoto M, Mochizuki T, Harada K, Kobayashi T, Setoguchi A, Shizuta Y, Mizuno T, Irie M, Nakamichi J, Tsujimoto H, Ohmi A, Fukuoka R, Nakamura Y, Tomiyasu H. Gene expression profiles associated with early relapse during first remission induction in canine multicentric high-grade B-cell lymphoma. J Vet Med Sci 2024; 86:18-27. [PMID: 37952972 PMCID: PMC10849849 DOI: 10.1292/jvms.23-0269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/29/2023] [Indexed: 11/14/2023] Open
Abstract
Although chemotherapy using CHOP-based protocol induces remission in most cases of canine multicentric high-grade B-cell lymphoma (mhBCL), some cases develop early relapse during the first induction protocol. In this study, we examined the gene expression profiles of canine mhBCL before chemotherapy and investigated their associations with early relapse during the first whole CHOP-based protocol. Twenty-five cases of mhBCL treated with CHOP-based protocol as first induction chemotherapy were included in this study. Sixteen cases completed the first whole CHOP-based protocol without relapse (S-group), and nine developed relapse during the chemotherapy (R-group). RNA-seq was performed on samples from neoplastic lymph nodes. Differentially expressed genes (DEGs) were extracted by the comparison of gene expression profiles between S- and R-groups, and the differences in the expression levels of these genes were validated by RT-qPCR. Extracted 179 DEGs included the genes related to chemokine CC motif ligand, T-cell receptor signaling pathway, and PD-L1 expression and PD-1 checkpoint pathway. We focused on chemokine CC motif ligand, and CCL4 was confirmed to be significantly downregulated in the R-group (P=0.039). We also focused on the genes related to T-cell signaling pathway, and CD3E (P=0.039), ITK (P=0.023), and LAT (P=0.023) genes were confirmed to be significantly upregulated in the R-group. The current results suggest that both changes in tumor cells and the interactions between tumor cells and immune cells are associated with the efficacy of the chemotherapy for first remission induction.
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Affiliation(s)
- Hiroto Toyoda
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Akiyoshi Tani
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuko Goto-Koshino
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tomoki Motegi
- Boston University School of Medicine, Department of Medicine, Division of Computational Biomedicine, Boston, MA, USA
| | - Mika Sakamoto
- Genome Informatics Laboratory, National Institute of Genetics, Shizuoka, Japan
| | - Takako Mochizuki
- Genome Informatics Laboratory, National Institute of Genetics, Shizuoka, Japan
| | - Kei Harada
- Japan Small Animal Cancer Center, Saitama, Japan
| | | | | | | | - Takuya Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | | | - Jun Nakamichi
- Japan Animal Referral Medical Center, Kanagawa, Japan
| | | | - Aki Ohmi
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Ray Fukuoka
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yasukazu Nakamura
- Genome Informatics Laboratory, National Institute of Genetics, Shizuoka, Japan
| | - Hirotaka Tomiyasu
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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