Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities

P. Patmasiriwat, G. C. Fraizer, David Claxton, H. Kantarjian, G. F. Saunders

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Abstract

WT1 is a tumor suppressor gene that can repress transcription of many growth-factor and growth-factor receptor genes. We quantitated WT1 expression levels in 62 acute myelogenous leukemia (AML) samples and found that 82% strongly expressed WT1. WT1 expression levels are highest in the undifferentiated and granulocytic French-American-British (FAB) subclasses and lower in the monocytic subclasses. WT1 was strongly expressed in normal CD34+ bone marrow (BM) stem cells but only weakly or not expressed in normal mature blood cells. This suggests that WT1 gene expression is associated with immature cells, which have high proliferative capacities. Previous studies of WT1 gene regulation showed that GATA-1 may regulate WT1 expression. To understand the relationship between WT1 and GATA-1 expression in leukemia, we examined the expression pattern of GATA-1 in the cells described above. Overall, AML samples expressed significant amounts of both WT1 and GATA-1. However, AML samples with 16q22 abnormalities, presumably interrupting the core binding factor (CBF) β gene expressed lower than normal levels of GATA-1 but high levels of WT1. Our data suggest that the transcription factor CBFβ may be important for GATA-1 gene regulation. Thus, WT1 expression varied in different FAB subclasses, and GATA-1 expression was strongly affected by the presence of chromosome 16q22 abnormalities.

Original languageEnglish (US)
Pages (from-to)1127-1133
Number of pages7
JournalLeukemia
Volume10
Issue number7
StatePublished - Jan 1 1996

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Acute Myeloid Leukemia
Chromosome Aberrations
Core Binding Factors
Genes
Growth Factor Receptors
Tumor Suppressor Genes
Bone Marrow Cells
Blood Cells
Intercellular Signaling Peptides and Proteins
Leukemia
Transcription Factors
Stem Cells
Gene Expression

All Science Journal Classification (ASJC) codes

  • Hematology
  • Oncology
  • Cancer Research

Cite this

Patmasiriwat, P., Fraizer, G. C., Claxton, D., Kantarjian, H., & Saunders, G. F. (1996). Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities. Leukemia, 10(7), 1127-1133.
Patmasiriwat, P. ; Fraizer, G. C. ; Claxton, David ; Kantarjian, H. ; Saunders, G. F. / Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities. In: Leukemia. 1996 ; Vol. 10, No. 7. pp. 1127-1133.
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Patmasiriwat, P, Fraizer, GC, Claxton, D, Kantarjian, H & Saunders, GF 1996, 'Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities', Leukemia, vol. 10, no. 7, pp. 1127-1133.

Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities. / Patmasiriwat, P.; Fraizer, G. C.; Claxton, David; Kantarjian, H.; Saunders, G. F.

In: Leukemia, Vol. 10, No. 7, 01.01.1996, p. 1127-1133.

Research output: Contribution to journalArticle

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Patmasiriwat P, Fraizer GC, Claxton D, Kantarjian H, Saunders GF. Expression pattern of WT1 and GATA-1 in AML with chromosome 16q22 abnormalities. Leukemia. 1996 Jan 1;10(7):1127-1133.