Article(id=1308455445115457682, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308455410751525737, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2025-0162, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739894400000, receivedDateStr=2025-02-19, revisedDate=1747152000000, revisedDateStr=2025-05-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1789889688041, onlineDateStr=2026-09-20, pubDate=1754928000000, pubDateStr=2025-08-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789889688041, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789889688041, creator=13701087609, updateTime=1789889688041, updator=13701087609, issue=Issue{id=1308455410751525737, tenantId=1146029695717560320, journalId=1189982191388893191, year='2025', volume='60', issue='8', pageStart='2375', pageEnd='2648', issueExtLink='null', onlineDate='null', pubDate='1754928000000', pubDateStr='2025-08-12', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789889679849, creator='13701087609', updateTime=1789893542748, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308471612978786380, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308455410751525737, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308471612978786381, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308455410751525737, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2535, endPage=2544, ext={EN=ArticleExt(id=1308455446755430547, articleId=1308455445115457682, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Expression and optimization of voltage-gated sodium channels Na
V1.8 in
Xenopus laevis oocytes, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Voltage-gated sodium channels (VGSCs, NaV) are essential for the generation and conduction of action potentials in excitable cells. The NaV1.8 subtype is predominantly expressed in sensory neurons, particularly in small-diameter neurons of the dorsal root ganglia (DRG), and plays a critical role in the signal transduction of chronic, neuropathic, and inflammatory pain. Due to its tetrodotoxin-resistant properties and electrophysiological characteristics of slow activation and inactivation, NaV1.8 is a key target for analgesic drug development, facilitating repeated neuronal firing. Consequently, establishing an in vitro drug screening model based on NaV1.8 is crucial for identifying lead compounds with analgesic potential. However, heterologous expression of NaV1.8 remains challenging, primarily due to low expression levels in non-neuronal cell lines, which hinders effective drug screening. In this study, we established an in vitro expression model of rat NaV1.8 using Xenopus laevis oocytes as the expression system. Channel property was characterized using the two electrode voltage clamp (TEVC) technique, providing a platform for screening active compounds. Quantitative polymerase chain reaction confirmed that rat NaV1.8 is predominantly expressed in the DRG and trigeminal ganglia (Guangxi University Ethics Committee Review and approval number: GXU-2022-159). We cloned the full-length NaV1.8 gene and constructed two chimeric variants, NaV1.8-N and NaV1.8-C. Following in vitro transcription of the corresponding capped RNA, it was injected into Xenopus laevis oocytes for heterologous expression. TEVC recordings were used to detect NaV1.8 and chimera expression, and channel activity was evaluated through I-V curves, steady-state activation curves, and the specific NaV1.8 antagonists A-803467 and VX-548. The chimera NaV1.8-C resolved the problem in stable expression of NaV1.8 in vitro and exhibited similar pharmacological properties with native NaV1.8, offering a valuable tool for future screening of compounds targeting voltage-gated sodium channel.
, authors=Nan WANG, Xin-yu GAO, Kai-zhi DING, Jin-peng YU, Dong-ting ZHANGSUN, Xiao-peng ZHU
*, Su-lan LUO
*, authorsList=Nan WANG, Xin-yu GAO, Kai-zhi DING, Jin-peng YU, Dong-ting ZHANGSUN, Xiao-peng ZHU, Su-lan LUO, authorCompany=null, correspAuthors=Xiao-peng ZHU, Su-lan LUO, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2025 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1308455448005333152, articleId=1308455445115457682, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=电压门控钠离子通道Na
V1.8在非洲爪蟾卵母细胞中的表达及优化, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
电压门控钠离子通道(voltage-gated sodium channels, VGSCs, NaV) 使可兴奋细胞产生动作电位并传导。其中, NaV1.8亚型主要表达在感觉神经元, 特别是背根神经节(dorsal root ganglion, DRG) 的小直径神经元中, 参与慢性疼痛、神经病理性疼痛和炎性疼痛的信号传导。NaV1.8的抗河豚毒素、慢激活和慢失活的电生理特性, 使其在神经元的重复放电中起关键作用, NaV1.8成为镇痛药物开发的重要靶标之一。因此, 体外建立基于NaV1.8为靶标的药物筛选模型, 对发现具备镇痛活性的先导药物有重要意义。目前, NaV1.8的异源表达存在一定困难, 主要表现为在体外非神经元细胞系中表达水平过低, 不利于药物筛选。本研究拟利用非洲爪蟾卵母细胞表达系统, 建立大鼠NaV1.8的体外表达模型, 利用双电极电压钳(two electrode voltage clamp, TEVC) 技术, 表征通道活性, 为活性化合物筛选提供平台。利用实时荧光定量PCR确认了大鼠的NaV1.8主要表达在DRG和三叉神经节中(广西大学伦理委员会审查批准号: GXU-2022-159), 同时克隆了NaV1.8的全长基因, 并构建了2个NaV1.8嵌合体(NaV1.8-N和NaV1.8-C)。体外转录获得对应基因的加帽RNA后, 转入非洲爪蟾卵母细胞进行异源表达, 利用TEVC对NaV1.8及其嵌合体的表达进行了检测, 并利用I-V曲线、稳态激活曲线、NaV1.8特异性拮抗剂A-803467和VX-548评估了该体外模型的通道活性。其中, 嵌合体NaV1.8-C解决了NaV1.8难以体外稳定表达的问题, 且与NaV1.8具有类似的药理活性, 可为今后靶向电压门控钠离子通道NaV1.8亚型的活性化合物筛选提供重要工具。
, authors=王楠, 高昕宇, 丁恺志, 于津鹏, 长孙东亭, 朱晓鹏
*, 罗素兰
*, authorsList=王楠, 高昕宇, 丁恺志, 于津鹏, 长孙东亭, 朱晓鹏, 罗素兰, authorCompany=null, correspAuthors=朱晓鹏, 罗素兰, authorNote=
作者贡献:
王楠完成实验过程、数据分析和论文初稿的写作; 高昕宇参与实验数据采集、结果分析和论文审阅; 丁恺志参与实验结果分析和论文审阅; 于津鹏负责电生理平台的搭建及指导; 长孙东亭、朱晓鹏和罗素兰构思了实验, 指导实验设计、数据分析和论文写作与修改。
, correspAuthorsNote=
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V1.6 and differentially modulates their functional properties [J]. J Neurosci, 2003, 23: 8261-8270., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1308498655875793071, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, xref=null, ext=[AuthorCompanyExt(id=1308498655884181680, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, companyId=1308498655875793071, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Guangxi Key Laboratory of Special Biomedicine, Medical School of Guangxi University, Nanning 530004, China), AuthorCompanyExt(id=1308498655892570289, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, companyId=1308498655875793071, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=广西大学医学院, 广西特色生物医药重点实验室, 广西 南宁 530004)])], figs=[ArticleFig(id=1308498660065902817, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=6QOtOTRdg5Dq5ntckNIAhQ==, figureFileBig=t0WEwj4vf1wMpa5gYDxlUw==, tableContent=null), ArticleFig(id=1308498660141400290, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.1, caption=
Flowchart of construction of NaV1.8 and its chimera (NaV1.8-C and NaV1.8-N) recombinant plasmid. DRG: Dorsal root ganglion; WT: Wild type, figureFileSmall=6QOtOTRdg5Dq5ntckNIAhQ==, figureFileBig=t0WEwj4vf1wMpa5gYDxlUw==, tableContent=null), ArticleFig(id=1308498660229480675, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=SOl79jqhHx77cwrbrAai1g==, figureFileBig=Mq8lmFqPLy4nAHIQdG66LA==, tableContent=null), ArticleFig(id=1308498660296589540, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.2, caption=
qPCR analysis the NaV1.8 gene distribution in different tissues. A: The total RNA extracted from different tissues. 1: Olfactory bulb; 2: Dorsal root ganglion (DRG); 3: Trigeminal ganglion tissue; B: The gene expression levels of NaV1.8 in the three tissues show significant differences. n = 6, x ± SEM. ****P < 0.000 1 (by one-way analysis of variance), figureFileSmall=SOl79jqhHx77cwrbrAai1g==, figureFileBig=Mq8lmFqPLy4nAHIQdG66LA==, tableContent=null), ArticleFig(id=1308498660359504101, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=TyKW+Zzx6HHXbUApVgM7ZA==, figureFileBig=01/r4gqJW5mGMyRM2NsnLQ==, tableContent=null), ArticleFig(id=1308498660422418662, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.3, caption=
Native and chimera NaV1.8 detection and sequence alignment. A: Agarose gel electrophoresis analysis of three plasmids. M: 10 000 bp standard DNA marker; 1: NaV1.8 plasmid; 2: NaV1.8-N plasmid; 3: NaV1.8-C plasmid; B: Sequence alignment of NaV1.8-C and NaV1.8-N with NaV1.8 (1-130 amino acids) and NaV1.4 (1-131 amino acids); C: Sequence alignment of NaV1.8-C and NaV1.8-N with NaV1.8 (1 730-1 956 amino acids) and NaV1.4 (1 598-1 840 amino acids), figureFileSmall=TyKW+Zzx6HHXbUApVgM7ZA==, figureFileBig=01/r4gqJW5mGMyRM2NsnLQ==, tableContent=null), ArticleFig(id=1308498660510499047, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=8Px7FZDu6cC/lS2hb5Cnqw==, figureFileBig=oxMRXY1NVUDS07z+MGuO0g==, tableContent=null), ArticleFig(id=1308498660674076904, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.4, caption=
The electrophysiological characteristics of native and chimera NaV1.8. A: Single stimulus program and typical current of NaV1.8 (n = 4); B: Single stimulus program and typical current of NaV1.8-C (n = 6); C: Current of NaV1.8-C expression at 2-5 days (n = 8); D: The I-V curve of the native NaV1.8 under square-wave step stimulation (n = 3); E: The I-V curve of the chimera NaV1.8-C under square-wave step stimulation (n = 6). x ± SEM. ****P < 0.000 1 (by one-way analysis of variance), figureFileSmall=8Px7FZDu6cC/lS2hb5Cnqw==, figureFileBig=oxMRXY1NVUDS07z+MGuO0g==, tableContent=null), ArticleFig(id=1308498660732797162, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=rS5G5IXTjFW6ipwTTl0KGQ==, figureFileBig=grAyF9zg01FrNfxrYqMutg==, tableContent=null), ArticleFig(id=1308498660787323115, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.5, caption=
Electrophysiological characteristics of NaV1.8-C and NaV1.4. A: Steady-state activation curves of NaV1.8-C (n = 6) and NaV1.4 (n = 5); B: I-V curves of NaV1.8-C (n = 6) and NaV1.4 (n = 5). x ± SEM (by the Boltzmann equation), figureFileSmall=rS5G5IXTjFW6ipwTTl0KGQ==, figureFileBig=grAyF9zg01FrNfxrYqMutg==, tableContent=null), ArticleFig(id=1308498660846043372, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=EN, label=null, caption=null, figureFileSmall=Ive+dUADcCStH6cZbaC24A==, figureFileBig=X21Tp32N78X6aKOnTm6few==, tableContent=null), ArticleFig(id=1308498662523764979, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308455445115457682, language=CN, label=Fig.6, caption=
Blocking effects of the specific blockers A-803467 and VX-548 on NaV1.8-C, and A-803467 on NaV1.4. 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