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Related Experiment Video

Updated: May 12, 2026

The Power of Simplicity: Sea Urchin Embryos as in Vivo Developmental Models for Studying Complex Cell-to-cell Signaling Network Interactions

The Power of Simplicity: Sea Urchin Embryos as in Vivo Developmental Models for Studying Complex Cell-to-cell Signaling Network Interactions

Published on: February 16, 2017

SM30 protein function during sea urchin larval spicule formation.

Fred Wilt¹, Christopher E Killian, Lindsay Croker

¹Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3200, United States. wilt@berkeley.edu

Journal of Structural Biology

|April 16, 2013

Summary

Investigating the role of SM30 proteins in sea urchin biomineralization using antisense oligonucleotides revealed no significant skeletal abnormalities, challenging their presumed function.

Keywords:

Matrix protein Sea urchin Spicule

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Last Updated: May 12, 2026

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Area of Science:

Developmental Biology
Biochemistry
Marine Biology

Background:

Biomineralization is crucial for skeletal development in marine organisms.
Occluded matrix proteins are thought to play key roles in biomineralization processes.
The function of the SM30 protein family in sea urchin skeletal development is largely unknown.

Purpose of the Study:

To investigate the function of SM30 proteins in the biomineralization of sea urchin (Strongylocentrotus purpuratus) skeletal spicules.
To determine the impact of SM30 protein depletion on embryonic skeletal development.

Main Methods:

Utilized antisense morpholino-oligonucleotides (MOs) to specifically inhibit the expression of SM30 genes.
Quantified SM30 protein levels using molecular techniques.
Assessed embryonic skeletal development and spicule formation in MO-treated embryos.

Main Results:

Successful reduction of SM30 protein levels to very low levels was achieved.
Embryonic development of skeletal spicules showed little to no aberration despite SM30 protein depletion.
This suggests SM30 proteins may not be essential for spicule formation in this context.

Conclusions:

The presumed essential role of SM30 proteins in sea urchin biomineralization is questioned.
Findings necessitate a re-evaluation of the function of SM30 and potentially other occluded matrix proteins in skeletal development.
Further research is needed to elucidate the precise roles of these proteins in biomineralization.