Drosophila melanogaster sex peptide regulates mated female midgut morphology and physiology

Drosophila melanogaster sex peptide regulates mated female midgut morphology and physiology
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果蝇性肽调节交配雌性中肠形态和生理学

DOI:
10.1073/pnas.2018112118
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发表时间:
2020
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
通讯作者:
Buchon, Nicolas
Buchon, Nicolas
中科院分区:
--
文献类型:
--
作者:
White, Melissa A.;Bonfini, Alessandro;Wolfner, Mariana F.;Buchon, Nicolas

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雌性果蝇在交配后经历了能量平衡的巨大转变,以补偿产卵过程中的营养投资。为了科普这种新陈代谢的变化,交配后的雌性会经历广泛的生理和行为变化,包括增加食物摄入和改变消化过程。雌性消化系统对交配的反应机制仍然不清楚。在这里,我们证明了精液蛋白性肽(SP)是女性交配后中肠生长和基因表达的关键调制器。在正常营养条件下,SP是触发雌性交配后中肠生长的必要和充分条件,并可能通过其受体性肽受体(SPR)起作用。此外,SP是负责几乎全部的中肠转录组的变化,交配后,包括上调蛋白质和脂质代谢基因和下调碳水化合物代谢基因。这些新陈代谢的变化可能有助于为雌性提供维持卵子生产所需的营养。因此,我们报告的作用,SP在改变女性生理,以提高生殖输出:即,SP触发开关从处女交配中肠状态。
Drosophila melanogasterfemales experience a large shift in energy homeostasis after mating to compensate for nutrient investment in egg production. To cope with this change in metabolism, mated females undergo widespread physiological and behavioral changes, including increased food intake and altered digestive processes. The mechanisms by which the female digestive system responds to mating remain poorly characterized. Here, we demonstrate that the seminal fluid protein Sex Peptide (SP) is a key modulator of female post-mating midgut growth and gene expression. SP is both necessary and sufficient to trigger post-mating midgut growth in females under normal nutrient conditions, and likely acting via its receptor, Sex Peptide Receptor (SPR). Moreover, SP is responsible for almost the totality of midgut transcriptomic changes following mating, including up-regulation of protein and lipid metabolism genes and down-regulation of carbohydrate metabolism genes. These changes in metabolism may help supply the female with the nutrients required to sustain egg production. Thus, we report a role for SP in altering female physiology to enhance reproductive output: Namely, SP triggers the switch from virgin to mated midgut state.
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