Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Echinobase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Echinobase
ECB-ART-42721
Int J Dev Biol 2012 Jan 01;569:681-91. doi: 10.1387/ijdb.113473cp.
Show Gene links Show Anatomy links

Characterization of proteolytic activities during intestinal regeneration of the sea cucumber, Holothuria glaberrima.

Pasten C , Rosa R , Ortiz S , González S , García-Arrarás JE .


???displayArticle.abstract???
Proteolysis carried out by different proteases control cellular processes during development and regeneration. Here we investigated the function of the proteasome and other proteases in the process of intestinal regeneration using as a model the sea cucumber Holothuria glaberrima. This echinoderm possesses the ability to regenerate its viscera after a process of evisceration. Enzymatic activity assays showed that intestinal extracts at different stages of regeneration possessed chymotrypsin-like activity. This activity was inhibited by i) MG132, a reversible inhibitor of chymotrypsin and peptidylglutamyl peptidase hydrolase (PGPH) activities of the proteasome, ii) E64d, a permeable inhibitor of cysteine proteases and iii) TPCK, a serine chymotrypsin inhibitor, but not by epoxomicin, an irreversible and potent inhibitor of all enzymatic activities of the proteasome. To elucidate the role which these proteases might play during intestinal regeneration, we carried out in vivo experiments injecting MG132, E64d and TPCK into regenerating animals. The results showed effects on the size of the regenerating intestine, cell proliferation and collagen degradation. These findings suggest that proteolysis by several proteases is important in the regulation of intestinal regeneration in H. glaberrima.

???displayArticle.pubmedLink??? 23319344
???displayArticle.pmcLink??? PMC4068352
???displayArticle.link??? Int J Dev Biol
???displayArticle.grants??? [+]

Genes referenced: LOC100887844 LOC115919910 psmg1

References [+] :
Arthur, Disruption of the murine calpain small subunit gene, Capn4: calpain is essential for embryonic development but not for cell growth and division. 2000, Pubmed