Genomics-based Venom Studies Using the Cone Snail C. Bullatus

使用锥形蜗牛 C. Bullatus 进行基于基因组学的毒液研究

基本信息

批准号：
8424958
负责人：
Mark Douglas Yandell
金额：
$ 27.37万
依托单位：
UNIVERSITY OF UTAH
依托单位国家：
美国
项目类别：
财政年份：
2012
资助国家：
美国
起止时间：
2012-02-13 至 2015-12-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8424958
关键词：
Acetylcholine Affinity Basic Science Budgets Cell Culture Techniques Complementary DNA Complex Conus genus Cultured Cells Cysteine DNA Sequence Data Distal Drug Controls Duct (organ) structure Elan brand of omega-conopeptide MVIIA Enzyme Gene Enzymes Evolution FDA approved Fishes Funding Gated Ion Channel Gene Expression Profile Genes Genome Genomics Goals Hand Health Human Insecta Length Libraries Ligands Light Marines Methods Neurobiology Neurologic Oocytes Peptides Pharmaceutical Preparations Phase Post-Translational Protein Processing Potassium Channel Process Production Proteins RNA Sequences Reading Reagent Regulation Research Resources Retinal Cone S Phase Salivary Glands Sampling Sequence Analysis Shotguns Snail Venoms Snails Sodium Channel Solid Techniques Tissues Toxin Transcript Universities Utah Venoms Work Xenopus laevis base chemical synthesis chronic pain cost cost effective deep sequencing falls follow-up genome sequencing innovation interest large scale production neurotransmission novel scaffold transcriptome sequencing voltage ziconotide

项目摘要

DESCRIPTION (provided by applicant): Genomics-based venom studies using the cone snail C. bullatus. The marine snail, Conus bullatus is a fish predator and must quickly immobilize its prey. This is accomplished by injecting prey with a lethal cocktail of conopeptide venoms, small cysteine-rich peptides, each with a high affinity to a different ligand or voltage- gated ion channel. Over the last decade, cone venoms have proven indispensable reagents for the study of vertebrate neurotransmission, and the FDA has approved one for the treatment of chronic pain. There is good reason to believe that collectively the cone snails still harbor a large repertoire of uncharacterized venoms (<100,000) of pharmacological interest. Conopeptides also undergo many unusual posttranslational modifications, carried out by enzymes that are themselves of pharmacological interest. This process of venom maturation is poorly characterized. Unfortunately, cone venom research today is hindered by a lack of significant genomic resources. Hence, the purpose this application is (1) to obtain funds for Conus transcriptome and genome sequencing and analyses to identify new venoms and their posttranslational modifiers, and (2) for functional characterizations of these new venoms and the enzymes involved in their posttranslational modifications. .

描述（由申请人提供）：使用锥形蜗牛 C. bullatus 进行基于基因组学的毒液研究。海洋蜗牛 Conus bullatus 是鱼类捕食者，必须快速固定猎物。这是通过向猎物注射致命的锥肽毒液混合物（富含半胱氨酸的小肽）来实现的，每种肽都对不同的配体或电压门控离子通道具有高亲和力。在过去的十年中，锥体毒液已被证明是脊椎动物神经传递研究中不可或缺的试剂，FDA 也已批准了一种用于治疗慢性疼痛的试剂。有充分的理由相信，锥形蜗牛仍然拥有大量具有药理学意义的未表征毒液（<100,000）。锥肽还经历许多不寻常的翻译后修饰，这些修饰是由本身具有药理学意义的酶进行的。这种毒液成熟过程的特征很少。不幸的是，当今的锥毒研究因缺乏重要的基因组资源而受到阻碍。因此，本申请的目的是（1）为圆锥花序转录组和基因组测序和分析获得资金，以鉴定新毒液及其翻译后修饰剂，以及（2）这些新毒液和参与其翻译后修饰的酶的功能表征。。