Indomethacin reproducibly induces metamorphosis in Cassiopea xamachana scyphistomae

PeerJ

article

Patricia Cabrales-Arellano¹  Tania Islas-Flores²  Patricia E. Thomé²  Marco A. Villanueva² 

[1] Posgrado en Ciencias del Mar y Limnología-UNAM, Instituto de Ciencias del Mar y Limnología-UNAM;Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología-UNAM

关键词: Indomethacin;    Scyphistomae;    Strobilation;    Chemical inducer;    Cassiopea xamachana;   

DOI  :  10.7717/peerj.2979

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Cassiopea xamachana jellyfish are an attractive model system to study metamorphosis and/or cnidarian–dinoflagellate symbiosis due to the ease of cultivation of their planula larvae and scyphistomae through their asexual cycle, in which the latter can bud new larvae and continue the cycle without differentiation into ephyrae. Then, a subsequent induction of metamorphosis and full differentiation into ephyrae is believed to occur when the symbionts are acquired by the scyphistomae. Although strobilation induction and differentiation into ephyrae can be accomplished in various ways, a controlled, reproducible metamorphosis induction has not been reported. Such controlled metamorphosis induction is necessary for an ensured synchronicity and reproducibility of biological, biochemical, and molecular analyses. For this purpose, we tested if differentiation could be pharmacologically stimulated as in Aurelia aurita, by the metamorphic inducers thyroxine, KI, NaI, Lugol’s iodine, H2O2, indomethacin, or retinol. We found reproducibly induced strobilation by 50 μM indomethacin after six days of exposure, and 10–25 μM after 7 days. Strobilation under optimal conditions reached 80–100% with subsequent ephyrae release after exposure. Thyroxine yielded inconsistent results as it caused strobilation occasionally, while all other chemicals had no effect. Thus, indomethacin can be used as a convenient tool for assessment of biological phenomena through a controlled metamorphic process in C. xamachana scyphistomae.

【 授权许可】

CC BY