Homeodomain proteins in development and therapy

Dorn, A. and Affolter, M. and Gehring, W. J. and Leupin, W.. (1994) Homeodomain proteins in development and therapy. Pharmacology & therapeutics, Vol. 61, no. 1-2. pp. 155-184.

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Official URL: http://edoc.unibas.ch/dok/A5258958

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Homeobox genes encode transcriptional regulators found in all organisms ranging from yeast to humans. In Drosophila, a specific class of homeobox genes, the homeotic genes, specifies the identity of certain spatial units of development. Their genomic organization, in Drosophila, as well as in vertebrates, is uniquely connected with their expression which follows a 5'-posterior-3'-anterior rule along the longitudinal body axis. The 180-bp homeobox is part of the coding sequence of these genes, and the sequence of 60 amino acids it encodes is referred to as the homeodomain. Structural analyses have shown that homeodomains consist of a helix-turn-helix motif that binds the DNA by inserting the recognition helix into the major groove of the DNA and its amino-terminal arm into the adjacent minor groove. Developmental as well as gene regulatory functions of homeobox genes are discussed, with special emphasis on one group, the Antennapedia (Antp) class homeobox genes and a representative 60-amino acid Antennapedia peptide (pAntp). In cultured neuronal cells, pAntp translocates through the membrane specifically and efficiently and accumulates in the nucleus. The internalization process is followed by a strong induction of neuronal morphological differentiation, which raises the possibility that motoneuron growth is controlled by homeodomain proteins. It has been demonstrated that chimeric peptide molecules encompassing pAntp are also captured by cultured neurons and conveyed to their nuclei. This may be of enormous interest for the internalization of drugs.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Growth & Development > Cell Biology (Affolter)
UniBasel Contributors:Affolter, Markus
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Pergamon Press
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:23
Deposited On:22 Mar 2012 13:32

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