2025
Development of succinate dehydrogenase subunit B-deficient tumor models for preclinical immunotherapy testing
VANOVA, Katerina Hadrava; Ondrej UHER; Michal KRAUS; Sona MIKLOVICOVA; Kateřina HÖNIGOVÁ et. al.Základní údaje
Originální název
Development of succinate dehydrogenase subunit B-deficient tumor models for preclinical immunotherapy testing
Autoři
VANOVA, Katerina Hadrava; Ondrej UHER; Michal KRAUS; Sona MIKLOVICOVA; Kateřina HÖNIGOVÁ (203 Česká republika, domácí); Stanislaw GWIEZDZINSKI; Timothy J GARRETT; Hans GHAYEE; Michal MASAŘÍK (203 Česká republika, domácí); Herui WANG; Zhengping ZHUANG; Jiri NEUZIL; Chunzhang YANG a Karel PACAK
Vydání
Cancer letters, CLARE, ELSEVIER IRELAND LTD, 2025, 0304-3835
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30204 Oncology
Stát vydavatele
Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 10.100 v roce 2024
Organizační jednotka
Lékařská fakulta
UT WoS
001547715900001
EID Scopus
2-s2.0-105012454817
Klíčová slova anglicky
Succinate dehydrogenase subunit B; Pheochromocytoma; Paraganglioma; Renal cell carcinoma; Immunotherapy; Metastasis; Tumor growth
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 9. 2025 09:44, Mgr. Tereza Miškechová
Anotace
V originále
Immunotherapy has advanced the treatment landscape for many challenging cancers by harnessing the immune system to eliminate tumor cells. However, its efficacy in rare tumors such as pheochromocytoma and paraganglioma (PCC/PGL), particularly those with succinate dehydrogenase B (SDHB) mutations, remains underexplored. These tumors often exhibit complex tumor microenvironments and immune evasion mechanisms, and their low incidence hinders clinical trials development. Together, these challenges underscore the need for robust preclinical models that closely mirror human disease and support therapeutic discovery. In this study, we developed and characterized murine models of SDHB-deficient tumors using CRISPRmediated gene editing in pheochromocytoma (MPC and MTT) and renal carcinoma (RenCa) cell lines. These models recapitulate key metabolic and immunological features of human SDHB-mutated tumors, which exhibit loss of SDHB protein expression, providing a relevant platform for evaluating immunotherapeutic strategies. We subsequently tested intratumoral immunotherapy with Mannan-BAM, TLR ligands, and an Anti-CD40 antibody (MBTA), a combination designed to overcome tumor-induced immune suppression. Our results indicate that SDHB-deficient PCC tumors exhibit increased antigen presentation and strong immune activation, leading to rejection or delayed progression in immunocompetent mice. In contrast, Sdhb knockout RenCa tumors consistently formed, allowing therapeutic testing. MBTA therapy effectively eradicated these tumors, prevented metastasis, and induced long-term immune memory. These findings highlight the value of genetically engineered, tissue-specific murine models in predicting immunotherapy outcomes in rare cancers. Moreover, they support the therapeutic potential of MBTA for treating SDHB-deficient renal cell carcinoma and provide a rationale for further translational studies.
Návaznosti
| LUAUS24120, projekt VaV |
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