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© Institut Pasteur
Macrophages et lymphocytes de souris. Image colorisée.
Project

Deregulation of hematopoiesis by Interleukin-10 over-expression (Joint project with the University of Minho, Portugal, granted ANR international funding)

Scientific Fields
Diseases
Organisms
Applications
Technique
Starting Date
01
Jul 2015
Status
Ongoing
Members
2
Structures
3

About

Cytokines are soluble molecules that regulate a large array of developmental processes. In the hematopoietic system, cytokines mediate the production of mature blood cells from specific lineages, by directly acting on hematopoietic progenitors. Cytokines also regulate the terminal differentiation of lymphocytes into particular effector populations, during the immune response. IL-10, produced in all immune responses, stands out as a major inhibitor of inflammation. While the role of pro-inflammatory cytokines in hematopoiesis is recognized, little is known of the role that cytokines that inhibit inflammatory reactions in the homeostasis of the hematopoietic system. To address this question, we generated a genetically modified mouse line – pMT-10 in our laboratory to express IL-10 under the control of the zinc-inducible metallothionein promoter. We have preliminary data that shows increased myeloid cell production and severe splenomegaly, resulting, upon prolonged IL-10 induction in medullary aplasia and death. These alterations mimic those found in primary myelofibrosis (PMF) a human myelo-proliferative disorder of high mortality. We propose that pMT-10 will allow testing alternative therapeutic approaches as the first animal model for PMF.

The research program involves :

  1. Characterize the role of IL-10 in the hematopoietic progenitor compartments.
  2. Determine the conditions that determine the reversion of the hematopoietic
  3. Testing pharmacological inhibitors of the IL-10 induced deregulation of hematopoiesis
  4. Association studies between genetic variants in the IL10 gene and risk/protection of myeloproliferative disorders, response to therapy and outcome of human patients.

This study will provide evidence of whether IL-10 titers can be used as a biomarker to identify patients at risk of developing primary myelofibrosis and the rational for testing IL-10 inhibitors in patients with this disease.  

Fundings