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. 2021 Apr 9;9:662915. doi: 10.3389/fcell.2021.662915

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Copyright © 2021 Li, Liu, Goldstein, Xin, Ke and Duan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Stc1a promotes NaR cell quiescence by suppressing IGF-PI3 kinase-Akt-Tor signaling in NaR cells. (A) Progenies of stc1a (+ 17)^+/–; Tg (igfbp5a: GFP) intercrosses were raised in E3 embryo medium to 3 dpf and treated with DMSO or 0.3 μM BMS-754807 (BMS). Two days later, fish were fixed and phospho-Akt positive cells in the yolk sac region were detected by immunostaining. These fish were genotyped individually afterward. n = 14–47 larvae/group. (B,C) Progeny of stc1a (+ 17)^+/–; Tg (igfbp5a: GFP) intercrosses were raised in E3 embryo medium and treated with DMSO, 0.3 μM BMS-754807 (BMS), 0.06 μM Wortmannin (Wort), 8 μM MK2206 (MK), 5 μM Rapamycin (Rapa), or 10 μM U0126 from 3 to 5 dpf. After NaR cells were quantified, these fish were genotyped individually. Representative images (B) and quantified data are shown (C). n = 7–35 larvae/group. Scale bar = 0.2 mm. (D) Progeny of stc1a (Δ18 + 1)^+/–; Tg (igfbp5a: GFP) intercrosses were raised in E3 embryo medium to 3 dpf and treated with DMSO, 0.3 μM BMS-754807 (BMS), 5 μM Rapamycin (Rapa), or 10 μM U0126 from 3 to 5 dpf. NaR cells were quantified as described above. n = 4–28 larvae/group.