IMR Press / FBL / Volume 18 / Issue 2 / DOI: 10.2741/4115

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Review

Thee role of Rhox homeobox factors in tumorigenesis

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1 Department of Physiology, Southern Illinois University, School of Medicine, 1135 Lincoln Dr. PO Box 6652, Carbondale, IL 62901, USA
Academic Editor:Kounosuke Watabe
Front. Biosci. (Landmark Ed) 2013, 18(2), 474–492;
Published: 1 January 2013
(This article belongs to the Special Issue Pathogenesis of tumor progression in breast and prostate cancer)

Homeobox genes encode transcription factors that have well-established roles in embryonic development. We recently discovered the Rhox genes, a new family of homeobox genes, which are selectively expressed in the developing embryo, postnatal and adult gonads, and accessory tissues associated with mammalian reproduction. The largest and best-characterized Rhox cluster is found in mouse. However, all mammals examined to date possess a set of Rhox genes that, while they may vary in number by species, appear relevant to reproduction and are located in the syntenic region of the X chromosome. Rhox5, the founding member of the family, was initially cloned from a screen to identify tumorigenic antigens from T-cell lymphomas, and was later found to be widely expressed in tumors from tissues of diverse origins that do not normally express the Rhox genes. This aberrant upregulation appears to be a general feature of many Rhox genes, but the implications of this misexpression remain largely uninvestigated. In this review, we will discuss the latest findings on the normal and abnormal roles of the Rhox genes and their potential contributions to the formation and progression of tumors.

Transcription factor
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