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Type: Journal article
Title: Expression and localization of homeodomain proteins DLX4/HB9 in normal and malignant human breast tissues
Author: Neufing, P.
Kalionis, B.
Horsfall, D.
Ricciardelli, C.
Stahl, J.
Vivekanandan, S.
Raymond, W.
Tilley, W.
Citation: Anticancer Research: international journal of cancer research and treatment, 2003; 23(2B):1479-1488
Publisher: Int Inst Anticancer Research
Issue Date: 2003
ISSN: 0250-7005
Statement of
Neufing, PJ; Kalionis, B; Horsfall, DJ; Ricciardelli, C; Stahl, J; Vivekanandan, S; Raymond, W; Tilley, WD
Abstract: Background: Alterations in the control of gene expression is a key event in neoplastic transformation. Investigating the expression of transcription factors such as homeodomain proteins may therefore allow better characterization of molecular mechanisms underlying the transformation process. Materials and Methods: Expression of homeodomain proteins DLX4 and HB9 was detected by RT-PCR and immunohistochemically in 24 breast tumors and their corresponding non-malignant tissue. Results: Although the percentage of nuclei expressing both DLX4 (p=0.001) and HB9 (p=0.0001) is increased in breast carcinoma, their intensity of nuclear staining is decreased compared to non-malignant nuclei. Furthermore HB9 nuclear immunoreactivity decreased progressively with increasing tumor grade (p=0.001). Conclusion: These data suggest that the reduction in malignant nuclear DLX4 immunoreactivity is an earlier event in breast carcinogenesis than the progressive loss of HB9 expression observed with increasing tumor grade. With further study and in conjunction with standard criterion of pathology, these findings may help to predict the malignant behaviour of some breast cancers.
Keywords: Homeobox gene-expression
Regulated expression
Possible mechanism
Sacral agenesis
CDX2 homeobox
Description: © 2003 International Institute of Anticancer Research
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Appears in Collections:Aurora harvest
Medicine publications
Obstetrics and Gynaecology publications

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