Apoptosis in gonadal somatic cells of scleractinian corals: implications of structural adjustments for gamete production and release
Apoptosis in gonadal somatic cells of scleractinian corals: implications of structural adjustments for gamete production and release
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石珊瑚性腺体细胞凋亡：结构调整对配子产生和释放的影响
DOI：
10.1098/rspb.2020.0578
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Ching
中科院分区：
文献类型：
--
作者：
Shinya Shikina;Che;Yi;Pin;Ching
细胞凋亡是一种进化保守的细胞程序性死亡过程。在这里，我们展示了在配子发生过程中由细胞凋亡引起的性腺的结构变化。解剖和组织学分析表明，从未产卵到产卵季节，由于生殖细胞的活跃增殖、分化和发育，精巢和卵巢增大。此外，随着产卵季节的临近，性腺体细胞层的厚度和细胞密度显著降低。进一步的分析表明，性腺体细胞层的变化是由性腺体细胞亚群中的细胞凋亡引起的。在其他硬珊瑚中，性腺体细胞层中也存在细胞凋亡。我们的发现表明，性腺体细胞层厚度和细胞密度的减少是结构调整，有利于卵母细胞和精巢(雄性生殖细胞团)的扩大和随后配子从性腺中释放。在动物生殖过程中，生殖细胞的凋亡是控制配子数量和质量的重要过程。然而，在后生动物中，性腺体细胞的凋亡很少有报道。因此，我们的数据为细胞凋亡在动物生殖中的独特用途提供了证据。
Apoptosis is an evolutionarily conserved process of programmed cell death. Here, we show structural changes in the gonads caused by apoptosis during gametogenesis in the scleractinian coral, Euphyllia ancora. Anatomical and histological analyses revealed that from the non-spawning to the spawning season, testes and ovaries increased in size due to active proliferation, differentiation and development of germ cells. Additionally, the thickness and cell density of the gonadal somatic layer decreased significantly as the spawning season approached. Further analyses demonstrated that the changes in the gonadal somatic layer were caused by apoptosis in a subpopulation of gonadal somatic cells. The occurrence of apoptosis in the gonadal somatic layer was also confirmed in other scleractinian corals. Our findings suggest that decreases in thickness and cell density of the gonadal somatic layer are structural adjustments facilitating oocyte and spermary (male germ cell cluster) enlargement and subsequent gamete release from the gonads. In animal reproduction, apoptosis in germ cells is an important process that controls the number and quality of gametes. However, apoptosis in gonadal somatic cells has rarely been reported among metazoans. Thus, our data provide evidence for a unique use of apoptosis in animal reproduction.
影响因子：
2.7
作者：
A. Robertson;Jenifer C. Croce;S. Carbonneau;Ekaterina Voronina;Esther Miranda;D. McClay;J. Coffman
通讯作者：
A. Robertson;Jenifer C. Croce;S. Carbonneau;Ekaterina Voronina;Esther Miranda;D. McClay;J. Coffman