title: Correlation of neuropilin-1 overexpression to survival in acute myeloid leukemia.
abstract: Neuropilin-1 (NRP-1), a vascular endothelial growth factors and semaphorin receptor functioning as mediator of angiogenesis and neuronal guidance, is expressed by various solid tumors. The importance of NRP-1 in hematological malignancies such as acute myeloid leukemia (AML) remains to be elucidated. Therefore, we determined NRP-1 expression by immunohistochemical analysis of bone marrow biopsies of patients with newly diagnosed, untreated AML. The expression of NRP-1 was significantly increased in AML patients (n = 76; median 12.9 arbitrary units (a.u.)) as compared with controls (n = 38; median 2.75 a.u.). Survival was significantly poorer in patients with high (> median) versus low (< or = median) NRP-1 expression levels with 5-year overall survival rates of 16.9 versus 49.6% (P = 0.050). In conclusion, our data provide evidence of increased NRP-1 expression in AML with significant correlation to survival. Thus, NRP-1 might constitute a promising target for antileukemic and antiangiogenic treatment strategies in AML.
authors.affiliation: Department of Medicine/Hematology and Oncology, University of Muenster, Muenster, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kreuter
authors.forename: K
authors.initials: K
authors.lastname: Woelke
authors.forename: R
authors.initials: R
authors.lastname: Bieker
authors.forename: C
authors.initials: C
authors.lastname: Schliemann
authors.forename: M
authors.initials: M
authors.lastname: Steins
authors.forename: T
authors.initials: T
authors.lastname: Buechner
authors.forename: W E
authors.initials: WE
authors.lastname: Berdel
authors.forename: R M
authors.initials: RM
authors.lastname: Mesters
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D001853:Bone Marrow / Q000378:metabolism; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007951:Leukemia, Myeloid / Q000378:metabolism* / Q000401:mortality* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D018919:Neovascularization, Physiologic / Q000502:physiology; D039942:Neuropilin-1 / Q000378:metabolism*; D015996:Survival Rate
chemical_list: D039942:Neuropilin-1