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Hematopoietic stem cell Apoptosis in bone marrow failure and MyeloDysplastic Syndromes: Friend or foe?

Project description

Apoptosis in bone marrow failure

Apoptosis is a highly regulated process of programmed cell death that occurs naturally in the body to remove damaged, old, or unnecessary cells. It plays a crucial role in tissue homeostasis as well as in the pathophysiology of inherited bone marrow failure syndromes such as Fanconi anaemia and dyskeratosis congenita, leading to a decreased production of red blood cells and white blood cells. The EU-funded ApoptoMDS project will examine the mechanisms of cell death in inherited bone marrow failure syndromes to decipher the impact of apoptosis in bone marrow failure and its role in the development of leukaemia. Results will lay the foundation for novel therapeutic approaches to alleviate symptoms of patients with these syndromes.

Objective

Deregulated apoptotic signaling in hematopoietic stem and progenitor cells (HSPCs) strongly contributes to the pathogenesis and phenotypes of congenital bone marrow failure and myelodysplastic syndromes (MDS) and their progression to acute myeloid leukemia (AML). HSPCs are highly susceptible to apoptosis during bone marrow failure and early MDS, but AML evolution selects for apoptosis resistance. Little is known about the main apoptotic players and their regulators. ApoptoMDS will investigate the impact of apoptotic deregulation for pathogenesis, correlate apoptotic susceptibility with the kinetics of disease progression and characterize the mechanism by which apoptotic susceptibility turns into resistance. ApoptoMDS will draw on a large collection of patient-derived samples and genetically engineered mouse models to investigate disease progression in serially transplanted and xenotransplanted mice. How activated DNA damage checkpoint signaling contributes to syndrome phenotypes and HSPC hypersusceptibility to apoptosis will be assessed. Checkpoint activation confers a competitive disadvantage, and HSPCs undergoing malignant transformation are under high selective pressure to inactivate it. Checkpoint abrogation mitigates the hematological phenotype, but increases the risk of AML evolution. ApoptoMDS aims to analyze if inhibiting apoptosis in HSPCs from bone marrow failure and early-stage MDS can overcome the dilemma of checkpoint abrogation. Whether inhibiting apoptosis is sufficient to improve HSPC function will be tested on several levels and validated in patient-derived samples. How inhibiting apoptosis in the presence of functional checkpoint signaling influences malignant transformation kinetics will be assessed. If, as hypothesized, inhibiting apoptosis both mitigates hematological symptoms and delays AML evolution, ApoptoMDS will pave the way for novel therapeutic approaches to expand the less severe symptomatic period for patients with these syndromes.

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Topic(s)

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ERC-STG - Starting Grant

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Call for proposal

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(opens in new window) ERC-2014-STG

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Host institution

UNIVERSITAETSKLINIKUM FREIBURG
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 372 525,00
Address
HUGSTETTER STRASSE 49
79106 Freiburg
Germany

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Region
Baden-Württemberg Freiburg Freiburg im Breisgau, Stadtkreis
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 372 525,00

Beneficiaries (1)

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