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Open Access Commentary

Hypoxia-specific targets in cancer therapy: role of splice variants

Dirk Vordermark

Author Affiliations

Department of Radiation Oncology, Martin Luther University Halle-Wittenberg, Halle, Germany

BMC Medicine 2010, 8:45  doi:10.1186/1741-7015-8-45

Published: 12 July 2010

Abstract

Tumour hypoxia is a well known adverse prognostic factor in the treatment of solid tumours. Hypoxia-inducible factor 1α (HIF-1α), a transcription factor subunit regulating a large number of hypoxia-responsive genes, is considered an attractive target for novel treatment approaches, due to a frequently reported association between HIF-1α overexpression and poor outcome in clinical series. This month in BMC Medicine, Dales et al. report on splice variants of HIF-1α in fresh frozen tissue samples of early human breast cancer, finding an association of mRNA levels of the variant HIF-1αTAG with adverse clinical factors (lymph node status, hormone receptor status) and poor metastasis-free survival. This preliminary study addresses the possibility that specific targeting of individual isoforms resulting from alternative splicing may play a role in HIF-1-directed treatment approaches.

See research article: http://www.biomedcentral.com/1741-7015/8/44 webcite