Research We Fund

Cytotoxic cells of the immune system, including T and NK cells, can be targeted to seek out and destroy leukemia, lymphoma and myeloma cells by engineering them to express chimeric antigen receptors (CARs) which empower the cell to home to and kill the cancer cells. Typically, such CAR-T and CAR-NK cells are generated from a patient's own blood, but sometimes heavy pre-treatment with chemotherapy leaves inadequate supplies of T and NK cells. We propose to generate T and NK cells from Pluripotent Stem Cells, which through genetic manipulation can be rendered suitable for treating any patient with an "off-the-shelf" cell product, hence facilitating otherwise cumbersome, labor-intensive, and expensive patient-specific cell therapies.

Relapse in patients with acute myeloid leukemia (AML) after hematopoietic cell transplant (HCT) is associated with extremely poor prognosis and thus remains a major unmet need. Natural killer (NK) cells are attractive for treating relapse in the post-HCT setting as these cells are not associated with causing graft-versus-host-disease. Cytokine-induced memory-like (CIML or memory-like) NK cells described by our group, demonstrate enhanced anti-leukemia activity, and persist for up to several months in an immune compatible post HCT setting (when derived from the stem cell donor). The goal of this trial is to evaluate donor CIML NK cells early after HCT in AML patients with measurable residual disease (MRD) and therefore otherwise with a high risk of relapse.

This team science program from Washington University will develop new immunotherapy treatments for patients with hard to treat or incurable lymphomas. The team includes physicians and scientists who have developed new ideas in the laboratory for immune-based treatment, and will translate these to clinical trial testing. These include engineered natural kill cells, healthy donors T cell engineered to attack a T cell lymphoma, and lymphoma-patient specific mutations as vaccine targets.

Venetoclax-based regimens are the standard of care for many patients with acute myeloid leukemia (AML) and are highly active therapeutic strategies for this challenging disease. However, some patients do not respond, and most patients who do respond will relapse. We have discovered that resistance to venetoclax may be mediated by the movement patterns of calcium throughout a cell. Furthermore, we have found that mitoxantrone, a conventional chemotherapy agent, can interrupt these calcium fluctuations at very low doses. Therefore we have proposed a clinical trial using lower-dose mitoxantrone for AML patients whose disease has resistance to venetoclax-based regimens.