Rawat, V.P.S.* ; Arseni, N. ; Ahmed, F. ; Mulaw, M.A. ; Thoene, S.* ; Heilmeier, B. ; Sadlon, T.* ; D'Andrea, R.J.* ; Hiddemann, W. ; Bohlander, S.K. ; Buske, C.* ; Feuring-Buske, M.*
The vent-like homeobox gene VENTX promotes human myeloid differentiation and is highly expressed in acute myeloid leukemia.
Proc. Natl. Acad. Sci. U.S.A. 107, 16946-16951 (2010)
Recent data indicate that a variety of regulatory molecules active in embryonic development may also play a role in the regulation of early hematopoiesis. Here we report that the human Vent-like homeobox gene VENTX, a putative homolog of the Xenopus xvent2 gene, is a unique regulatory hematopoietic gene that is aberrantly expressed in CD34(+) leukemic stem-cell candidates in human acute myeloid leukemia (AML). Quantitative RT-PCR documented expression of the gene in lineage positive hematopoietic subpopulations, with the highest expression in CD33(+) myeloid cells. Notably, expression levels of VENTX were negligible in normal CD34(+)/CD38(-) or CD34(+) human progenitor cells. In contrast to this, leukemic CD34(+)/CD38(-) cells from AML patients with translocation t(8,21) and normal karyotype displayed aberrantly high expression of VENTX. Gene expression and pathway analysis demonstrated that in normal CD34(+) cells enforced expression of VENTX initiates genes associated with myeloid development and down-regulates genes involved in early lymphoid development. Functional analyses confirmed that aberrant expression of VENTX in normal CD34(+) human progenitor cells perturbs normal hematopoietic development, promoting generation of myeloid cells and impairing generation of lymphoid cells in vitro and in vivo. Stable knockdown of VENTX expression inhibited the proliferation of human AML cell lines. Taken together, these data extend our insights into the function of embryonic mesodermal factors in human postnatal hematopoiesis and indicate a role for VENTX in normal and malignant myelopoiesis.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
Publication type
Article: Journal article
Document type
Scientific Article
Thesis type
Editors
Keywords
Human; Myelopoiesis; Xvent; VENTX2
Keywords plus
Language
english
Publication Year
2010
Prepublished in Year
HGF-reported in Year
2010
ISSN (print) / ISBN
0027-8424
e-ISSN
1091-6490
ISBN
Book Volume Title
Conference Title
Conference Date
Conference Location
Proceedings Title
Quellenangaben
Volume: 107,
Issue: 39,
Pages: 16946-16951
Article Number: ,
Supplement: ,
Series
Publisher
National Academy of Sciences
Publishing Place
Day of Oral Examination
0000-00-00
Advisor
Referee
Examiner
Topic
University
University place
Faculty
Publication date
0000-00-00
Application date
0000-00-00
Patent owner
Further owners
Application country
Patent priority
Reviewing status
Peer reviewed
POF-Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Research field(s)
Immune Response and Infection
PSP Element(s)
G-521000-001
Grants
Copyright
Erfassungsdatum
2010-12-08