首页 | 期刊简介 | 编委会 | 投稿指南 | 常用下载 | 联系我们 | 期刊订阅 | In English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 28次   下载 0  
分享到: 微信 更多
虎斑乌贼FMRFamide的表达定位及其Na+通道受体(SpFaNaC)基因的克隆鉴定、表达分析*
曹慧敏, 朱阳, 郭祖霆, 李双, 迟长凤①, 郑利兵
浙江海洋大学海洋科学与技术学院 海洋生物种质发掘与利用国家地方联合实验室 浙江舟山 316022
摘要:
已有研究表明,神经肽在神经内分泌调控过程中发挥重要调控作用,FMRFamide是神经肽家族的一类重要代表成员,参与无脊椎动物的多种生理调控过程。利用同源克隆和RACE技术获得了虎斑乌贼神经肽FMRFamide的Na+通道受体(SpFaNaC)的cDNA全长共2090Sbp,开放阅读框(open reading frame, ORF)S1782Sbp,编码一个由593个氨基酸残基组成的多肽链,N端无信号肽,具有2个跨膜区;序列分析显示其与头足纲、腹足纲和双壳纲相似性较高,聚类为姐妹支。荧光定量PCRS(qRT-PCR)检测到SpFaNaC主要分布在中枢神经系统的视叶、脑,其次是心脏和副缠卵腺。SpFaNaC原位杂交结果显示其阳性信号存在于视网膜感光细胞的细胞体、视叶深层视网膜的内颗粒细胞层和外细胞颗粒层、食道上神经团的各亚叶,尤以交界区最为集中。同时,原位杂交和免疫组化观察到神经肽FMRFamide主要分布在视叶的中央髓质区、边缘髓质区、内细胞颗粒层和外细胞颗粒层;食道上神经团的阳性信号较少,主要集中为亚叶交界处。实验结果可为研究虎斑乌贼FMRFamide及SpFaNaC的生理功能研究提供有效资料基础。
关键词:  虎斑乌贼  FMRFamide  FaNaC  表达定位  原位杂交  免疫组化
DOI:
分类号:
基金项目:国家自然科学基金项目, 31872547号; 浙江省自然科学基金项目, LY20C190007号
FMRFamide localization and molecular characterization, and expression analysis of its Na+ channel receptor in Sepia pharaonis
CAO Hui-Min, ZHU Yang, GUO Zu-Ting, LI Shuang, CHI Chang-Feng, ZHENG Li-Bing
National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, School of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China
Abstract:
Many reports showed neuropeptides play pivotal regulatory roles in the neuroendocrine process. FMRFamide is an important representative member in the neuropeptide family and involved in the physiological process. In the paper, the full-length cDNA of FMRFamide Na+ channel receptor gene in Sepia pharaonis (designated SpFaNaC) was cloned with homologous amplification and RACE (rapid-amplification of cDNA ends). The cDNA of SpFaNaC is 2090 bp length, including a 1782 bp opening reading frame (ORF), which could encode 593 amino acid residues with none a signal peptide at N-terminal and 2 transmembrane (TM) regions. Sequence analysis showed SpFaNaC shared higher identity with cephalopods, gastropods, and bivalve species, and clustered together to be sister branches. Quantitative Real-time PCR (qRT-PCR) results showed SpFaNaC had relative higher expression level in the central nervous system optic lobe and brain, followed by heart and accessory nidamental gland. In situ hybridization (ISH) results showed that SpFaNaC mRNA positive signals could be detected significantly in the inner cell granular layer and outer cell granular layer of the optic lobe, the photoreceptor cells of retina, the sub-lobes of supraoesophageal mass, and the positive signals are the most concentrated in the border area. In addition, ISH and immunohistochemical staining (IHC) results showed FMRFamide mainly distributed in the central medullary area, peripheral medullary area, inner cell granular layer and outer cell granular layer of the optic lobe. There were relatively few positive signals in the supraoesophageal mass and the positive signals are the most concentrated in the border area. These results provide a basis for studying the role of FMRFamide and its Na+ channel receptors in physiological process of S. pharaonis.
Key words:  Sepia pharaonis  FMRFamide  FaNaC  expression localization  in situ hybridization (ISH)  immumohistochemical staining (IHC)
版权所有 海洋与湖沼 Oceanologia et Limnlolgia Sinica Copyright©2008 All Rights Reserved
主管单位:中国科协技术协会 主办单位:中国海洋湖沼学会
地址:青岛市福山路32号  邮编:266071  电话:0532-82898753  E-mail:ols@qdio.ac.cn
技术支持:北京勤云科技发展有限公司