Yoshinobu Uno, Ryo Nozu, Itsuki Kiyatake, Nobuyuki Higashiguchi, Shuji Sodeyama, Kiyomi Murakumo, Keiichi Sato, Shigehiro Kuraku

Commun Biol. 2020 Nov 6;3(1):652. doi:10.1038/s42003-020-01373-7

Cell culture-based karyotyping of orectolobiform sharks for chromosome-scale genome analysis.

Primary cell culture of fibroblasts and lymphocytes. Mitogens were used to stimulate lymphocyte growth. “2n = 102 for the whale shark (Rhincodon typus) and zebra shark (Stegostoma fasciatum), and 2n = 106 for the brownbanded bamboo shark (Chiloscyllium punctatum) and whitespotted bamboo shark (C. plagiosum)”. In comparison with teleost cell culture medium, shark cells needed a higher osmolarity and the medium was supplemented with 333 mM urea, 188 mM NaCl and 54 mM trimethylamine N-oxide.