We demonstrate that BCOR-deficient cells have a heightened sensitivity to DHODH inhibitors such as brequinar and leflunomide, that are already in clinical use. Rather, DHODH's role in the electron transport chain, essential for mitigating reactive oxygen species, may be the physiological vulnerability that pushes BCOR-mutant cells toward cell death when DHODH is inhibited. DHODH inhibitors could be repurposed as targeted therapies for BCOR-mutant tumors, offering a promising strategy for precision medicine in AML and other cancers.
Flow cytometric analysis conducted for proteomic expression of CD46 and CD55 on cell surfaces of leukemia patients showed a reduction in expression by 1.2-fold and 2.8-fold in AML patients, respectively. Post transcriptional knockdown of both genes in leukemic cell model using customized shRNA, followed by cell viability assays showed a significant reduction in the viability of cells by 3-fold, suggesting that although the expression of both proteins could be compromised by cancerous cells to evade complement attack mechanisms, they could also be vital to the viability of cancerous cells suggesting a dual role of complement in the tumor microenvironment.
P1, N=20, Recruiting, Fred Hutchinson Cancer Center | Trial completion date: Oct 2027 --> Oct 2028 | Trial primary completion date: Oct 2026 --> Oct 2027
3 days ago
Trial completion date • Trial primary completion date
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HLA-B (Major Histocompatibility Complex, Class I, B) • HLA-C (Major Histocompatibility Complex, Class I, C)
P1, N=50, Active, not recruiting, Dana-Farber Cancer Institute | Recruiting --> Active, not recruiting | Trial primary completion date: Dec 2025 --> Feb 2025
Finally, CSF1R inhibition on a KMT2A::MLLT3+ paediatric leukaemia cell line resulted in significant cell death, suggesting that CSF1R could be therapeutically targeted in these patients. Our findings suggest that KMT2A::MLLT3+ infant AML may originate from foetal liver CSF1R+ LMPPs, and that these patients may benefit from anti-CSF1R-CAR-T cell therapy.