Abstract:
The antibody-drug conjugate T-DM1 spurs immune cells to infiltrate HER2-positive breast tumors in patients. Treating mice that carry breast tumors with T-DM1 improves survival, but the tumors suppress the infiltrating lymphocytes. Combining T-DM1 with checkpoint inhibitors that block CTLA-4 and PD-1 overcomes this effect, eliminating breast tumors from 95% of the mice.
Insights
The antibody-drug conjugate T-DM1 enhances immune cell infiltration in HER2-positive breast tumors. Combining T-DM1 with checkpoint inhibitors CTLA-4 and PD-1 eradicated tumors in 95% of mice, overcoming tumor-induced immune suppression.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- HER2-positive breast cancer remains a significant health concern.
- Antibody-drug conjugates like T-DM1 show promise but face challenges with tumor-induced immune suppression.
- Immune checkpoint inhibitors (ICIs) like CTLA-4 and PD-1 inhibitors modulate the immune response against cancer.
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