Comparison of the gene expression repertoire in human hematopoietic progenitors and mature leukocytes led to identification of a transcript expressed in CD34+cells and undetectable in differentiated cells. Sequencing of the cDNA (termed EHZF: early hematopoietic zinc finger) revealed 30 zinc fingers with 96% homology to mouse Evi3, a recently identified gene associated with the retroviral integration site in AKXD-27 B-cell lymphomas. EHZF and Evi3 share high homology with the transcription cofactor OAZ, implicated in the control of olfactory epithelium and B-lymphocyte differentiation and in the bone morphogenic protein (BMP) signal transduction. Here we show that (1) EHZF expression is abundant in human CD34+ progenitors and declines rapidly during cytokine-driven differentiation; (2) significant mRNA levels are found in most acute myelogenous leukemias; (3) in response to BMPs EHZF complexes SMADs 1 and 4, binds to, and enhances the transcriptional activity of, a BMP2/4 responsive element; (4) EHZF inhibits the transcriptional activity of early B-cell factor (EBF), a transcription factor essential for specification of the B-cell lineage. Taken together, our data suggest that EHZF is likely to play a relevant role in the control of human hematopoiesis and might be implicated in the development of hematopoietic malignancies.

Early Hematopoietic Zinc Finger protein (EHZF), the human homologue to Evi3, is highly expressed in primitive human hematopoietic cells

BOND HM;MESURACA M;AGOSTI V;AMODIO N;
2004-01-01

Abstract

Comparison of the gene expression repertoire in human hematopoietic progenitors and mature leukocytes led to identification of a transcript expressed in CD34+cells and undetectable in differentiated cells. Sequencing of the cDNA (termed EHZF: early hematopoietic zinc finger) revealed 30 zinc fingers with 96% homology to mouse Evi3, a recently identified gene associated with the retroviral integration site in AKXD-27 B-cell lymphomas. EHZF and Evi3 share high homology with the transcription cofactor OAZ, implicated in the control of olfactory epithelium and B-lymphocyte differentiation and in the bone morphogenic protein (BMP) signal transduction. Here we show that (1) EHZF expression is abundant in human CD34+ progenitors and declines rapidly during cytokine-driven differentiation; (2) significant mRNA levels are found in most acute myelogenous leukemias; (3) in response to BMPs EHZF complexes SMADs 1 and 4, binds to, and enhances the transcriptional activity of, a BMP2/4 responsive element; (4) EHZF inhibits the transcriptional activity of early B-cell factor (EBF), a transcription factor essential for specification of the B-cell lineage. Taken together, our data suggest that EHZF is likely to play a relevant role in the control of human hematopoiesis and might be implicated in the development of hematopoietic malignancies.
2004
hematopoietic stem cells; transcription factors; B-cell differentiation; leukemia
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12317/58007
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 80
  • ???jsp.display-item.citation.isi??? 74
social impact