A Novel Lair-1 Antibody Selectively Targets Acute Myeloid Leukemia (AML) Stem Cells
BLOOD(2021)
摘要
Extensive research has led to recent approval of novel therapies such as mylotarg, venetoclax, glasdegib and CC486, and small molecule inhibitors against actionable mutations such as ivosidenib (IDH1), enasidenib (IDH2), gliteritinib and midostaurin (FLT3) in AML. However, the mainstay of treatment in AML remains unchanged since the 1970s. There is a significant unmet need for AML patients that fail to respond to or relapse after standard-of-care (SOC) treatments including allogeneic stem cell transplantation and targeting actionable mutations. In addition, a large fraction of SOC patients invariably relapse due to persistence of chemotherapy-resistant leukemia stem cells (LSCs) or immune evasion. Therefore, identification of unique therapies that preferentially target elusive LSCs and promote immune responses to AML to prevent relapse are highly sought after. Unlike, targeting acute lymphoblastic leukemia (ALL) with CD19 or CD22 with various modalities, when developing AML therapies, it is of paramount importance to differentiate LSCs from hematopoietic stem cells (HSCs) to lessen or abolish unavoidable cytopenias.
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