Kravchuk O I, Lavrov A I, Finoshin A D, Gornostaev N G, Georgiev A A, Abaturova S B, Mikhailov V S, Lyupina Yu V
Koltzov Institute of Developmental Biology, Russian Academy of Sciences, ul. Vavilova 26, Moscow, 119334, Russia.
Biological Faculty, Moscow State University, Moscow, 119992, Russia.
Dokl Biochem Biophys. 2018 Mar;479(1):77-79. doi: 10.1134/S1607672918020072. Epub 2018 May 19.
It was found that cells of different color morphs of the cold-water marine sponges Halichondria panicea (Pallas, 1766) of the class Demospongiae differ in the content of epibionts of bacteria of the genus Pseudoalteromonas. The sponge cells with elevated levels of epibionts of bacteria of the genus Pseudoalteromonas showed an increased expression of Hsp70 proteins but had a reduced level of the proteasomal catalytic beta 5 subunit, which was accompanied by a change in their activity. Probably, epibionts of bacteria of the genus Pseudoalteromonas may affect the ubiquitin-proteasome system in the cells of cold-water marine sponges and, thereby, ensure their adaptive plasticity.
研究发现，寻常海绵纲的冷水海洋海绵——白枝海绵（Halichondria panicea，帕拉斯，1766年）不同颜色形态的细胞中，假交替单胞菌属细菌的附生生物含量存在差异。假交替单胞菌属细菌附生生物水平较高的海绵细胞，热休克蛋白70（Hsp70）的表达增加，但蛋白酶体催化β5亚基水平降低，这伴随着其活性的变化。假交替单胞菌属细菌的附生生物可能会影响冷水海洋海绵细胞中的泛素-蛋白酶体系统，从而确保其适应性可塑性。
