Bone marrow niche is the microenvironment where the leukemic cells residue and it support cell proliferation, metastasis and drug resistance by secretion of numerous factors including cytokines. When leukemic cells grow, they disrupt normal hematopoietic progenitor cell (HPC) bone marrow niches and create abnormal microenvironments. Also, niches recently have been linked to the development of d...

Acute myeloid leukemia (AML) is caused by the cooperation between class I, mostly mutated receptor tyrosine kinases (RTK), and class II oncoproteins, chimeric transcription factors derived from chromosomal translocations. The blasts of 80-90% of AML-patients are positive for the RTK c-Kit. In about 50% of the 'core binding factor' (CBF)-AMLs, c-Kit harbors additional gain-of-function mutations,...

Acute myeloid leukemia (AML) is a heterogeneous and intrinsically resistant stem cell neoplasm, occurring in about 14 000 patients the US annually. AML characterized by unbridled proliferation of progenitor cells block normal differentiation. Unfortunately, despite recent advances treatment, prognosis poor for almost all older adults half under age 60. Thus, novel effective therapies are urgent...

Recently, a novel CXCL12-binding receptor, has been identified. This CXCL12-binding receptor commonly known as CXCR7 (CXC chemokine receptor 7), has lately, based on a novel nomenclature, has received the name ACKR3 (atypical chemokine receptor 3). In this study, we aimed to investigate the expression of CXCR7 in leukemic cells, as well as its participation in CXCL12 response. Interesting, we c...

Introduction. Extramedullary sites of leukemic proliferation, harboring an adverse outcome, are rare and usually found in the blastic phase chronic myeloid leukemia. We report a case newly diagnosed patient with leukemia phase, infiltration right ovary on disease presentation. Case report. The presented abdominal pain, leukocytosis, anemia. A peripheral blood smear indicated leukemia, cytoreduc...

BACKGROUND Leukemic and lymphomatous meningitis is a major presentation of primary or secondary central nervous system (CNS) involvement by aggressive lymphomas or acute leukemia. METHODS The medical literature and ongoing clinical trials were reviewed on the clinical presentation, diagnosis, prognosis, prevention, and treatment of leukemic and lymphomatous meningitis. RESULTS Treatment for...

A blockade of CD44 can interfere with haematopoietic and leukemic stem cell homing, the latter being considered as a therapeutic option in haematological malignancies. We here aimed to explore the molecular mechanism underlying the therapeutic efficacy of anti-CD44. We noted that in irradiated mice reconstituted with a bone marrow cell transplant, anti-CD44 exerts a stronger effect on haematopo...