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Model Information:

4T1 is a mouse breast cancer cell line (of stage IV human equivalent) and is a 6-thioguanine resistant cell line selected from the 410.4 tumor without mutagen treatment. It is a highly tumorigenic model that is grown in BALB/c mice and presents adverse toxicity when continuously dosed with anti-PD-1 and anti-PD-L1, as reported in literature(1). It is still one of the most commonly used models for the assessment of novel anti-cancer immunotherapies. At Crown Bioscience, the 4T1 model is offered as subcutaneous (flank) and orthotopic (mammary fat pad) models. In addition, a firefly luciferase tagged reporter line of 4T1 model is available, fascilitating disease monitoring via bioluminescent imaging.
Cancer Type Breast Cancer
Mouse Strain BALB/c

Response to Immune Checkpoint Inhibitors

Additional Characteristics

(1) Mall C, Sckisel G.D., Proia D.A., Mirsoian A, Grossenbacher S.K., et al., Repeated PD-1/PD-L1 monoclonal antibody administration induces fatal xenoeneic hypersensitivity reactions in a murine model of breast cancer. Oncoimmunology. 5(2), e1075114, 2016.

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