Areas of Research

Epigenetic regulation of myeloma

Multiple myeloma is in many ways a disease driven by inappropriate gene expression. It is characterised by the aberrant activation of gene regulatory elements known as enhancers, stimulating the upregulation of key oncogenes. Blocking this behaviour is therefore a promising strategy for myeloma treatment, and many therapeutic strategies directly or indirectly target gene regulatory pathways.

The lab studies the epigenetic regulation of gene expression, focused on the way these processes are dysregulated in multiple myeloma. We have a particular interest in understanding the role of oncogenic enhancer activity in driving myeloma-specific transcriptional profiles, and identifying the factors responsible for this behaviour. A major goal of the lab is to identify potential therapeutic targets that could be developed as novel therapies for multiple myeloma.

We use a variety of high-throughput genomics techniques to study the chromatin landscape, including ChIP-seq, ATAC-seq and RNA-seq. We have optimised TOPmentation, a small cell-number technique that allows us to characterise the chromatin profile of myeloma patient samples. In addition, we use the 3C technology Micro-Capture-C to map the physical association of enhancers and promoters. By combining these techniques with genetic and pharmacological manipulation of myeloma cell lines, we are able to explore mechanistically enhancer function and regulation.

Mechanisms of myeloma drug resistance

Relapse is very common in myeloma after initial treatment. Patients typically enter remission following treatment, but invariably relapse, often with resistance to one or more of these drugs. There is therefore a pressing need to understand the mechanisms that drive this resistance to find ways to counteract it. We are working to identify and understand epigenetic mechanisms that drive drug resistance via changes in gene expression, which therefore may be reversed to resensitise cells to therapy.

Our team

Jinglin Zhou (he/him)

Jinglin Zhou (he/him)
PhD student

Jason Taslim (he/him)

Jason Taslim (he/him)
Research assistant

Sophie Ball (she/her)

Sophie Ball (she/her)
PhD student

Funders

Research Publications

Citation

BibTex format

@article{Dąbkowska:2026:10.1038/s41375-026-03093-z,
author = {Dbkowska, A and Janowska, M and Pastorczak, A and Domka, K and Nowicka, Z and Urbanska, Z and Zajc, W and Bugajewski, M and Grzybowska, J and Pruchniak, P and Fidyt, K and Fendler, W and Taslim, J and Crump, NT and Ushmorov, A and Patkowska, E and Firczuk, M},
doi = {10.1038/s41375-026-03093-z},
journal = {Leukemia},
title = {mTORC1 inhibition upregulates CD20 and enhances anti-CD20 antibody efficacy in B-cell precursor acute lymphoblastic leukemia.},
url = {http://dx.doi.org/10.1038/s41375-026-03093-z},
year = {2026}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is characterized by impaired B-cell maturation and poor prognosis in relapsed/refractory (R/R) cases. While CD20-targeted immunotherapies offer clinical benefit, their efficacy is limited by low and heterogeneous CD20 expression on BCP-ALL cells. In this study, we demonstrate that overexpression of wild-type IKZF1, a tumor suppressor frequently mutated in high-risk BCP-ALL, upregulates CD20 and promotes leukemic B cell maturation. Using a transcriptional mimicry approach, we identified mTORC1 inhibitors as compounds showing similarity to selected IKZF1-induced transcriptional signatures, including convergence on B-cell maturation and induction of CD20 expression both in vitro and in vivo. mTORC1 inhibition enhanced the antitumor efficacy of anti-CD20 monoclonal antibodies and promoted B-lineage antigen expression, while downregulating immature markers. Mechanistically, CD20 upregulation was mediated via the AKT-FOXO1 axis, with AKT phosphorylation being essential for this effect. Importantly, this phenotypic shift was observed in BCP-ALL models with IKZF1 deletions, highlighting the relevance to high-risk disease. Our findings support the use of mTORC1 inhibitors to sensitize BCP-ALL cells to CD20-directed immunotherapies and provide a strong rationale for their clinical evaluation as adjuncts to anti-CD20 immunotherapy in BCP-ALL.
AU - Dbkowska,A
AU - Janowska,M
AU - Pastorczak,A
AU - Domka,K
AU - Nowicka,Z
AU - Urbanska,Z
AU - Zajc,W
AU - Bugajewski,M
AU - Grzybowska,J
AU - Pruchniak,P
AU - Fidyt,K
AU - Fendler,W
AU - Taslim,J
AU - Crump,NT
AU - Ushmorov,A
AU - Patkowska,E
AU - Firczuk,M
DO - 10.1038/s41375-026-03093-z
PY - 2026///
TI - mTORC1 inhibition upregulates CD20 and enhances anti-CD20 antibody efficacy in B-cell precursor acute lymphoblastic leukemia.
T2 - Leukemia
UR - http://dx.doi.org/10.1038/s41375-026-03093-z
UR - https://www.ncbi.nlm.nih.gov/pubmed/42618701
ER -