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Messenger (Los Angel). 2016 Jun 1;5(1-2):100-106. doi: 10.1166/msr.2016.1052.

ADP-ribosyl cyclases regulate early development of the sea urchin.

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Department of Cell and Developmental Biology, University College London, London WC1E 6BT UK.
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0202 USA.


ADP-ribosyl cyclases are multifunctional enzymes involved in the metabolism of nucleotide derivatives necessary for Ca2+ signalling such as cADPR and NAADP. Although Ca2+ signalling is a critical regulator of early development, little is known of the role of ADP-ribosyl cyclases during embryogenesis. Here we analyze the expression, activity and function of ADP-ribosyl cyclases in the embryo of the sea urchin - a key organism for study of both Ca2+ signalling and embryonic development. ADP-ribosyl cyclase isoforms (SpARC1-4) showed unique changes in expression during early development. These changes were associated with an increase in the ratio of cADPR:NAADP production. Over-expression of SpARC4 (a preferential cyclase) disrupted gastrulation. Our data highlight the importance of ADP-ribosyl cyclases during embryogenesis.


ADP-ribosyl cyclase; NAADP; cyclic ADP-ribose; early development; gastrulation

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