Involvement of various hematopoietic-cell lineages by the JAK2V617F mutation in polycythemia vera.

ارزیابی جهش JAK2V617F در نئوپلاسم های  میلوپرولیفراتیو کلاسیک غیر CML به روش ARMS-PCR

Background and Aim : Myeloproliferative neoplasms are clonal and heterogeneous disorders of hematopoietic stem cells lead to increase of one or more cell lines in the blood. Recently, the acquired mutation JAK2 V617F has been described in the majority of patients with myeloproliferative neoplasms (MPNs).This mutation is characterized by a G to T transverse at nucleotide 1849 in exon 12 of the J...

Involvement of various hematopoietic cell lineages by the JAK2 mutation in polycythemia vera

ارزیابی میزان جهش JAK2V617F در بیماران میلو پرولیفراتیو مزمن به روش AS-RT-PCR

Background and Aim: The JAK2 is an acquired mutation that is observed in majority of patients with classical Philadelphia-negative Myeloproliferative neoplasms that include polycythemia vera (PV), essential thrombocythemia (ET), primary myelofibrosis (PMF). This acquired mutation is characterized by a G to T transversion at nucleotide 1849 in exon 12 of the JAK2 gene, leading to a substitution ...

Evaluation of JAK2V617F mutation prevalence in myeloproliferative neoplasm by AS-RT-PCR

Abstract Objective JAK2 is a non-receptor tyrosine kinase that plays a major role in myeloid disorders. JAK2V617F mutation is characterized by a G to T transverse at nucleotide 1849 in exon 12 of the JAK2 gene, located on the chromosome 9p, leading to a substitution of valine to phenylalanine at amino acid position 617 in the JAK2 protein. Methods In this study we evaluated RNA from 89 pati...

Distinct roles for long-term hematopoietic stem cells and erythroid precursor cells in a murine model of Jak2V617F-mediated polycythemia vera.

In the current model of the pathogenesis of polycythemia vera (PV), the JAK2V617F mutation arises in hematopoietic stem cells (HSCs) that maintain the disease, while erythroid precursor populations expand, resulting in excessive red blood cell production. We examined the role of these specific cell populations using a conditional Jak2V617F knockin murine model. We demonstrate that the most imma...