Linked Life Data

16210035

Source:http://linkedlifedata.com/resource/pubmed/id/16210035

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-10-7
pubmed:abstractText
Protein tyrosine kinases (PTKs) and phosphatases (PTPs) play a crucial role in normal cell development, and dysfunction of these enzymes has been implicated in human cancers. Polycythemia vera (PV) is a clonal hematologic disease characterized by hypersensitivity of hematopoietic progenitor cells to growth factors and cytokines. Recently, a unique and clonal mutation in the JAK homology 2 (JH2) domain of JAK2 that results in a valine to phenylalanine substitution at position 617 (V617F) was found in the majority of PV patients. This mutation leads to constitutive JAK2 activation and abnormal signaling and induces erythrocytosis in an animal model. The mutation is also found in a significant percentage of patients with idiopathic myelofibrosis (50%) and essential thrombocythemia (30%). Thus, it seems probable that this mutation associates with other molecular genetic events to cause different myeloproliferative disorders (MPDs). One of these secondary events is the transition to homozygosity of the mutated gene in 30% of the PV patients. Other events may include defects in PTPs, but these remain to be characterized. Recent studies represent a great step forward in the molecular pathogenesis in PV and the development of targeted new drugs to treat the disease.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0037-1963
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
221-9
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Role of tyrosine kinases and phosphatases in polycythemia vera.
pubmed:affiliation
Hematology/Oncology Division, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, 2220 Pierce Avenue, Nashville, TN 37232, USA. joe.zhao@vanderbilt.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural