Study of proteins inducing cell survival in patients with myelodysplastic syndromes
Abstract
Aim: The aim of this study is to investigate factors that are involved in the survival and expansion of neoplastic clone in myelodysplastic syndromes although they are characterized by increased apoptosis of hemopoietic cells. This survival process leads to accumulation of immature cells (blasts) and disease progression to acute leukaemia. Introduction: In early stages of the disease the neoplastic clone do not present surviving advantages over the normal hemopoietic cells. The expansion of the MDS clone is achieved after an immune insult of the normal bone marrow. During disease progress mutations are accumulated that produce survival advantage and maturation arrest to the neoplastic clone. Survivin is an apoptosis inhibitor not expressed in normal cells but found expressed in neoplastic cells in various tumours and has been associated to cell proliferation and survival. Materials and Methods: One hundred and forty-two patients (87 males and 55 females) with median age 72 years as we ...
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