Lessons learned from the Eµ-TCL1 mouse model of CLL
The Eµ-TCL1 mouse model has been used for over 20 years to study the pathobiology of chronic lymphocytic leukemia (CLL) and for preclinical testing of novel therapies. A CLL-like disease develops with increasing age in these mice due to a B cell specific overexpression of human TCL1. The reliability...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 May 2024
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| In: |
Seminars in hematology
Year: 2024, Jahrgang: 61, Heft: 3, Pages: 194-200 |
| ISSN: | 1532-8686 |
| DOI: | 10.1053/j.seminhematol.2024.05.002 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1053/j.seminhematol.2024.05.002 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S003719632400060X 
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| Verfasserangaben: | Alessia Floerchinger, Martina Seiffert |
MARC
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| 520 | |a The Eµ-TCL1 mouse model has been used for over 20 years to study the pathobiology of chronic lymphocytic leukemia (CLL) and for preclinical testing of novel therapies. A CLL-like disease develops with increasing age in these mice due to a B cell specific overexpression of human TCL1. The reliability of this model to mirror human CLL is controversially discussed, as none of the known driver mutations identified in patients are found in Eµ-TCL1 mice. It has to be acknowledged that this mouse model was key to develop targeted therapies that aim at inhibiting the constitutive B cell receptor (BCR) signaling, a main driver of CLL. Inhibitors of BCR signaling became standard-of-care for a large proportion of patients with CLL as they are highly effective. The Eµ-TCL1 model further advanced our understanding of CLL biology owed to studies that crossed this mouse line with various transgenic mouse models and demonstrated the relevance of CLL-cell intrinsic and -extrinsic drivers of disease. These studies were instrumental in showing the relevance of the tumor microenvironment in the lymphoid tissues for disease progression and immune escape in CLL. It became clear that CLL cells shape and rely on stromal and immune cells, and that immune suppressive mechanisms and T cell exhaustion contribute to CLL progression. Based on this knowledge, new immunotherapy strategies were clinically tested for CLL, but so far with disappointing results. As some of these therapies were effective in the Eµ-TCL1 mouse model, the question arose concerning the translatability of preclinical studies in these mice. The aim of this review is to summarize lessons we have learnt over the last decades by studying CLL-like disease in the Eµ-TCL1 mouse model. The article focuses on pitfalls and limitations of the model, as well as the gained knowledge and potential of using this model for the development of novel treatment strategies to achieve the goal of curing patients with CLL. | ||
| 650 | 4 | |a Chronic lymphocytic leukemia | |
| 650 | 4 | |a CLL biology | |
| 650 | 4 | |a Eµ-TCL1 mouse model | |
| 650 | 4 | |a Preclinical treatment study | |
| 650 | 4 | |a TCL1 transplantation model | |
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