Research we fund

This project focuses on how age-associated clonal hematopoiesis (CH) alters the bone marrow (BM) microenvironment, and whether this promotes transformation of CH to acute myeloid leukemia (AML). I will utilize single cell RNA-seq data, genetic knockout models, and targeted inhibitors to perturb the non-hematopoietic and hematopoietic compartments of a mouse model of CH. The goal is to determine if manipulation of the BM microenvironment can attenuate CH and prevent AML transformation.

MLL1/KMT2A rearranged leukemias are the most common blood cancer occurring in children characterized by dismal prognosis. Given the importance of fusion proteins in driving the disease, I will determine factors affecting the fusion protein stability through a CRISPR/Cas9 screening approach in an innovative model system where the MLL fusions are endogenously tagged with a fluorescent protein. This will facilitate development of molecular glue degraders specifically targeting the MLL fusions.

GATA2 deficiency is an inherited pediatric syndrome with a high rate of progression to myeloid malignancy, the mechanisms of which remain largely undefined. Here, we will use our recently generated mouse model, Gata2R396Q, to determine the effects of GATA2 deficiency on hematopoietic function and identify novel drivers of myeloid malignancy via focused CRISPR screens. Our work will provide further insight into the mechanisms driving leukemic progression of this syndrome.

We aim to understand the mechanism of how dysregulated Gasdermin D(GSDMD) protein propels the pathogenesis of myelodysplastic syndromes(MDS). With single-cell sequencing and patient-derived xenograft (PDX) mouse models, we want to provide pre-clinical grade data to support the concept of inhibiting GSDMD as an effective therapeutic approach in the treatment of MDS. We expect to see the great beneficial effects of GSDMD inhibition in MDS mouse models and PDX mouse models using FDA-approved drugs.

I aim to develop an accurate disease monitoring system and identify immunologic determinants of development and progression in T-cell lymphoma (TCL). I will integrate noninvasive liquid biopsy methods by high-throughput sequencing. I will study blood samples at various milestones, including pre-diagnostic, diagnostic/baseline, and post-treatment specimens during the natural history of TCL. Using these novel tools and unique specimens, my goal is the development of effective therapies for TCL.

Lineage-ambiguous leukemias are high-risk blood cancers with unclear biologic basis and suboptimal treatment options. Here, I will identify the cell of origin of lineage ambiguous leukemia and investigate new therapeutic strategies through in vitro and in vivo experimental modeling approaches and preclinical drug studies in patient-derived xenografts. These studies will clarify the cellular and molecular alterations driving lineage ambiguity and advance a new, rational therapeutic approach.

NPM1c and TP53 mutations are exclusive in acute myeloid leukemia (AML) despite both being commonly present in patients, suggesting a fitness disadvantage for cells with co-occurring mutations. However, the mechanisms underlying this exclusivity have not been explored. This project will utilize novel models to dissect the importance of TP53 signaling in NPM1c+ (pre)-leukemic stem cells. Generated results may highlight therapeutic opportunities for improved risk management of NPM1c+ AML patients.

The goal of this proposal is to investigate the consequence of the chromatin reader eleven-nineteen-leukemia (ENL) gain-of-function mutations in the pathogenesis of leukemia. Our studies leverage the expertise in the molecular and chromatin biology of chromatin reader in leukemia utilizing mouse model, high resolution image, epigenomic and transcriptomic approaches. Our goal is to understand how chromatin reader contributes to cancer development, progression, and therapeutic outcome.

The development of acute myeloid leukemia (AML) is preceded by a “preleukemic” phase in which mutated hematopoietic stem cells expand due to a fitness advantage. Our work uses prospective models and analysis of patient samples to study how the duration of preleukemia and how the preleukemic clonal burden affect progression to AML. Results of our studies will shed new light on AML pathogenesis and help guide clinical management of preleukemic conditions such as clonal hematopoiesis.

Most patients respond well to drugs that inhibit an important MCL target named BTK. However, almost all of them will eventually relapse and then do very poorly. Inhibition of MALT1, a target which is biochemically downstream of BTK, may rescue many of these patients, and inhibiting both BTK and MALT1 may be better still. Developing a drug that inhibits both targets at the same time, from the beginning of treatment, will avoid some complications and likely be best of all; we will find out.

Our research program’s goal is to identify therapeutically actionable pathways in pre-leukemic and leukemic stem cells in myeloid malignancies. We specifically dissect molecular circuits governing stem cell self-renewal and differentiation, how these change during aging, and contribute to leukemic stem cell evolution and maintenance. Accomplishing this work will enable the rational design of curative intervention and perhaps even prevention strategies for patients with myeloid malignancies.

The goal of this project is to investigate the role of the epigenetic regulator Eleven-Nineteen-Leukemia (ENL) and its cancer mutations in acute myeloid leukemia (AML). Our studies leverage the expertise in chromatin biology, functional genomics, and AML modeling, as well as unique chemical compounds and mouse models. Results from this project will provide novel biological insights into our understanding of AML pathogenesis and facilitate the development of novel epigenetic therapies.