2017年3月13日, 國際學術權威刊物自然出版集團旗下子刊《Nature Communications》雜誌線上發表了復旦大學遺傳工程國家重點實驗室、遺傳與發育協同創新中心胡薇教授課題組、石樂明教授課題組和中國CDC寄生蟲病所的研究人員合作完成題為“Dynamic transcriptomes identify biogenic amines and insect-like hormonal regulation for mediating reproduction in Schistosoma japonicum”的研究論文, 論文發現調控日本血吸蟲生殖發育機理的重要基因。 復旦大學博士生王吉鵬(現在美國德州大學西南醫學中心從事博士後研究)和郁穎博士後為本文的共同第一作者, 胡薇教授為本文的通訊作者。
胡薇教授領銜的復旦大學和中國CDC寄生蟲病所聯合研究團隊, 繪製了日本血吸蟲從合抱至性成熟產卵過程的動態表達譜,
血吸蟲病是一種重要的人畜共患寄生蟲病, 流行於76個國家和地區, 超過2億人受感染, 是僅次於瘧疾的世界第二大寄生蟲病。 在中國、菲律賓和印尼等地流行的是日本血吸蟲, 可感染包括人、牛、羊、豬在內的40多種哺乳動物。 血吸蟲生活史複雜, 在中間宿主體內進行無性生殖,
從這些生殖發育相關基因中, 課題組通過原位雜交及RNAi等驗證了雌雄合抱相關的芳香族氨基酸脫羧酶(SjAADC)和雌蟲卵黃腺發育先關的G蛋白偶聯受體(SjRL-GPCR)。 特別是, 該受體基因與昆蟲的咽側體抑制素受體具有一定的序列相似性, 且血吸蟲中已報導含有與昆蟲類似的咽側體抑制素及蛻皮素, 本研究發現昆蟲的保幼激素和蛻皮素會導致血吸蟲雌蟲生殖系統的明顯損傷, 因此提出新的假說:血吸蟲生殖發育的調控模式可能與昆蟲的激素調節模式類似。
原文連結:
原文摘要:
Eggs produced by the mature female parasite are responsible for the pathogenesis and transmission of schistosomiasis. Female schistosomes rely on a unique male-induced strategy to accomplish reproductive development, a process that is incompletely understood. Here we map detailed transcriptomic profiles of male and female Schistosoma japonicum across eight time points throughout the sexual developmental process from pairing to maturation. The dynamic gene expression pattern data reveal clear sex-related characteristics, indicative of an unambiguous functional division between males and females during their interplay. Cluster analysis, in situ hybridization and RNAi assays indicate that males likely use biogenic amine neurotransmitters through the nervous system to control and maintain pairing with females. In addition, the analyses indicate that reproductive development of females involves an insect-like hormonal regulation. These data sets and analyses serve as a foundation for deeper study of sexual development in this pathogen and identification of novel anti-schistosomal interventions.
原文連結:
原文摘要:
Eggs produced by the mature female parasite are responsible for the pathogenesis and transmission of schistosomiasis. Female schistosomes rely on a unique male-induced strategy to accomplish reproductive development, a process that is incompletely understood. Here we map detailed transcriptomic profiles of male and female Schistosoma japonicum across eight time points throughout the sexual developmental process from pairing to maturation. The dynamic gene expression pattern data reveal clear sex-related characteristics, indicative of an unambiguous functional division between males and females during their interplay. Cluster analysis, in situ hybridization and RNAi assays indicate that males likely use biogenic amine neurotransmitters through the nervous system to control and maintain pairing with females. In addition, the analyses indicate that reproductive development of females involves an insect-like hormonal regulation. These data sets and analyses serve as a foundation for deeper study of sexual development in this pathogen and identification of novel anti-schistosomal interventions.