Abstract
Regeneration in echinoderms has proved to be more amenable to study in the laboratory than the more classical vertebrate models, since the smaller genome size and the absence of multiple orthologs for different genes in echinoderms simplify the analysis of gene function during regeneration. In order to understand the role of homeobox-containing genes during arm regeneration in echinoderms, we isolated the complement of genes belonging to the Hox class that are expressed during this process in two major echinoderm groups: asteroids (Echinaster sepositus and Asterias rubens) and ophiuroids (Amphiura filiformis), both of which show an extraordinary capacity for regeneration. By exploiting the sequence conservation of the homeobox, putative orthologs of several Hox genes belonging to the anterior, medial, and posterior groups were isolated. We also report the isolation of a few Hox-like genes expressed in the same systems.
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Acknowledgments
We would like to acknowledge the help of the personnel at the Kristineberg Marine Station and at the National Institute of Marine Sciences and Technologies (Monastir). We thank Olga Ortega-Martinez (Kristineberg) for the picture of an Amphiura regenerating tip.
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Ben Khadra, Y., Said, K., Thorndyke, M. et al. Homeobox Genes Expressed During Echinoderm Arm Regeneration. Biochem Genet 52, 166–180 (2014). https://doi.org/10.1007/s10528-013-9637-2
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DOI: https://doi.org/10.1007/s10528-013-9637-2