Article(id=1308816814872818467, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308816657934541639, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2025-0736, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1751126400000, receivedDateStr=2025-06-29, revisedDate=1758470400000, revisedDateStr=2025-09-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1789975845305, onlineDateStr=2026-09-21, pubDate=1768147200000, pubDateStr=2026-01-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789975845305, onlineIssueDateStr=2026-09-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789975845305, creator=13701087609, updateTime=1789975845305, updator=13701087609, issue=Issue{id=1308816657934541639, tenantId=1146029695717560320, journalId=1189982191388893191, year='2026', volume='61', issue='1', pageStart='1', pageEnd='320', issueExtLink='null', onlineDate='null', pubDate='1768147200000', pubDateStr='2026-01-12', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789975807888, creator='13701087609', updateTime=1789984282344, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308852202421191556, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308816657934541639, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308852202421191557, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308816657934541639, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=301, endPage=310, ext={EN=ArticleExt(id=1308816816420516644, articleId=1308816814872818467, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=The construction of
E. coli outer membrane vesicles-fused lipopeptide system and the study on its potential for oral gene delivery, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Lipid nanoparticles (LNP) are highly promising gene delivery platform due to their high safety, good stability, and excellent nucleic acid encapsulation efficiency. However, current clinical gene therapy primarily relies on invasive administration routes. The development of compliant, non-invasive delivery routes, such as oral administration, is crucial. Nevertheless, creating gastric acid-resistant oral gene delivery vectors faces a critical bottleneck that nucleic acid therapeutics are highly susceptible to degradation in the harsh acidic environment (pH 1.5-4.5) of the gastrointestinal tract. To address this, we constructed a cholesterol-enriched hybrid system (RLSC/OMVC) based on an amphiphilic cationic lipopeptide (RLS) and Escherichia coli outer membrane vesicles (OMV). This system demonstrates efficient gene delivery capability under both neutral and acidic conditions, along with excellent in vitro biocompatibility. The study characterized the physicochemical properties of different formulations (RLS, RLSC, OMV, and OMVC). In vitro cell transfection experiments showed that the gene delivery efficiency of RLSC/OMVC under acidic condition (pH 4.5) was significantly increased by nearly 3-fold compared with Lipofectamine 2000. Furthermore, transmission electron microscopy observation, particle size/zeta potential analysis, and gel electrophoresis experiments revealed the mechanism by which OMV and cholesterol synergistically protect plasmid DNA from acidic degradation in conjunction with lipid peptide. The developed RLSC/OMVC hybrid system boasts integrated advantages of exceptional acid resistance, high-efficiency gene delivery, and good biocompatibility. This work provides an innovative strategy for oral gene therapy.
, authors=Hao-yue CHEN, Yi-chun WANG, Bin-bin YANG, Xue-yi HU, Qun-jie BI, Rong-rong JIN
*, Yu NIE
*, authorsList=Hao-yue CHEN, Yi-chun WANG, Bin-bin YANG, Xue-yi HU, Qun-jie BI, Rong-rong JIN, Yu NIE, authorCompany=null, correspAuthors=Rong-rong JIN, Yu NIE, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 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=1308816818257621816, articleId=1308816814872818467, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=大肠杆菌外囊泡融合型脂质肽系统的构建及口服基因递送潜力研究, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
脂质纳米颗粒(lipid nanoparticles, LNP) 因其安全性高、稳定性好及核酸封装效率优异等特点, 成为极具前景的基因递送载体。当前临床基因治疗主要依赖侵入性给药方式, 因此开发顺应性强、非侵入性的给药途径(如口服给药) 至关重要。然而口服基因递送载体面临着核酸药物在胃肠道酸性环境(pH 1.5~4.5) 易降解的难题。为此, 本研究基于大肠杆菌的细菌外膜囊泡(bacterial outer membrane vesicles, OMV) 和阳离子脂质肽(RLS) 构建了含胆固醇(cholesterol) 的杂化系统(a cholesterol-enriched hybrid system based on an amphiphilic cationic lipopeptide and Escherichia coli outer membrane vesicles, RLSC/OMVC), 该体系在中性和酸性条件下均展现出高效基因递送能力, 并具有优良的体外生物相容性。研究分别表征了不含胆固醇与含胆固醇制剂(RLS、RLSC、OMV和OMVC) 的物理化学特性, 并通过体外细胞转染, 表明RLSC/OMVC在酸性条件(pH 4.5) 下的基因递送效率较Lipofectamine 2000显著提升(约3倍)。进一步通过透射电镜观察、粒径/电位分析和凝胶电泳实验揭示了OMV及胆固醇协同脂质肽保护质粒pDNA (plasmid DNA) 免受酸性降解的作用机制。本研究构建的大肠杆菌外囊泡融合型脂质肽RLSC/OMVC系统, 兼具耐酸性、高效基因递送及优良生物相容性, 为口服基因治疗提供创新策略。
, authors=陈皓月, 王一醇, 杨彬彬, 胡雪依, 毕群杰, 金蓉蓉
*, 聂宇
*, authorsList=陈皓月, 王一醇, 杨彬彬, 胡雪依, 毕群杰, 金蓉蓉, 聂宇, authorCompany=null, correspAuthors=金蓉蓉, 聂宇, authorNote=
作者贡献:
陈皓月负责实验、文章构思、文章撰写; 王一醇负责提供相关实验材料, 文章构思; 杨彬彬负责部分材料表征实验; 胡雪依负责细胞实验辅助; 毕群杰负责提供相关实验材料; 金蓉蓉、聂宇负责写作、审编、资金获取。
, correspAuthorsNote=
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Biol Trace Elem Res, 2025, 203: 4577-4589., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1308816818509280058, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, xref=null, ext=[AuthorCompanyExt(id=1308816818513474363, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, companyId=1308816818509280058, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610041, China), AuthorCompanyExt(id=1308816818526057276, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, companyId=1308816818509280058, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=四川大学国家生物医学材料工程技术研究中心/四川大学生物医学工程学院, 四川 成都 610041)])], figs=[ArticleFig(id=1308816823458558838, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=EbjmE2rkLnxJQXErJJ5iRw==, figureFileBig=xhk0d3z9SMJGuMhn+dBcqQ==, tableContent=null), ArticleFig(id=1308816823534056312, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.1, caption=
Material preparation flow chart. OMV: E. coli outer membrane vesicles; OMVC: Cholesterol-contained outer membrane vesicles of E. coli; RLS: An amphiphilic cationic lipopeptide; RLSC: Self-assembly of RLS and cholesterol, figureFileSmall=EbjmE2rkLnxJQXErJJ5iRw==, figureFileBig=xhk0d3z9SMJGuMhn+dBcqQ==, tableContent=null), ArticleFig(id=1308816825383744378, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=VtyYD9TlO52iABoGl+vAPg==, figureFileBig=mLMTWx8zzOH71H+dhXEmzg==, tableContent=null), ArticleFig(id=1308816825446658939, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.2, caption=
Characterizations of RLS and RLSC. A: 1H NMR spectra of RLS; B: Mass spectrometer of RLS; C: The morphology of RLS was determined by transmission electron microscopy (TEM); D: Particle size and zeta potential of RLS and RLSC; E, F: Particle size and zeta potential of RLS and RLSC treated by dd H2O, pH 4.5 solution determined for 0, 5, 10, 20, 30, 40, 50, 60 min by dynamic light scattering (DLS). n = 3, $ \overline{x} $ ± s, figureFileSmall=VtyYD9TlO52iABoGl+vAPg==, figureFileBig=mLMTWx8zzOH71H+dhXEmzg==, tableContent=null), ArticleFig(id=1308816825517962108, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=0PuyVHFqYwW4Ff1yFPchSw==, figureFileBig=qBtM1xRRaMuvlj6O98HMVQ==, tableContent=null), ArticleFig(id=1308816825593459581, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.3, caption=
Characterizations of OMV and OMVC. A: The morphology of OMV determined by TEM; B: Particle size and zeta potential of OMV and OMVC; C, D: Particle size and zeta potential of OMV and OMVC treated by dd H2O, pH 4.5 solution determined for 0, 5, 10, 20, 30, 40, 50, 60 min by DLS, respectively. n = 3, $ \overline{x} $ ± s, figureFileSmall=0PuyVHFqYwW4Ff1yFPchSw==, figureFileBig=qBtM1xRRaMuvlj6O98HMVQ==, tableContent=null), ArticleFig(id=1308816825660568447, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=M1gDM2wkXkAIzJvmMo8zRA==, figureFileBig=ATVW3+lqXczSxfusfSQRLA==, tableContent=null), ArticleFig(id=1308816825727677312, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.4, caption=
Transfection efficiency of pEGFP in Caco-2 after incubation at pH 3.0, 4.5 and 7.4. A: Transfection efficiency in Caco-2 after incubation of RLS/OMV at pH 3.0; B, C: Fluorescence microscopy images (B) and quantitative analysis of mean fluorescence intensity (C) in Caco-2 after incubation of RLS/OMV at pH 7.4 and 4.5; D, E: Fluorescence microscopy images (D) and quantitative analysis of mean fluorescence intensity (E) in Caco-2 after incubation of RLS/OMVC at pH 7.4 and 4.5; F, G: Fluorescence microscopy images (F) and quantitative analysis of mean fluorescence intensity (G) in Caco-2 after incubation of RLSC/OMVC at pH 7.4 and 4.5; H: Comparison graphs of transfection effects after RLS/OMV, RLS/OMVC, and RLSC/OMVC were incubated at pH 7.4 and 4.5. n = 3, $ \overline{x} $ ± s, figureFileSmall=M1gDM2wkXkAIzJvmMo8zRA==, figureFileBig=ATVW3+lqXczSxfusfSQRLA==, tableContent=null), ArticleFig(id=1308816825811563393, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=lgoODphr2Ud9zSJyMjLFXA==, figureFileBig=tGskmgAPH+zDv0cjIEMwcg==, tableContent=null), ArticleFig(id=1308816825920615298, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.5, caption=
Characterizations of RLSC/OMVC. A: The morphology of RLSC/OMVC/pDNA complexes determined by TEM; B: The stability of particle size and zeta potential of RLS/OMV and RLSC/OMVC with R/O ratios of 20 and 30 after incubation at pH 7.4 and 4.5. n = 3, $ \overline{x} $ ± s. *P < 0.05, **P < 0.01, ***P < 0.001. ns: Not significant, figureFileSmall=lgoODphr2Ud9zSJyMjLFXA==, figureFileBig=tGskmgAPH+zDv0cjIEMwcg==, tableContent=null), ArticleFig(id=1308816826012889987, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=zmROQT03Yhv3rx4OX/W9fQ==, figureFileBig=Z2b6jx4vKnObvx34O4aYYA==, tableContent=null), ArticleFig(id=1308816826084193157, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.6, caption=
Gel electrophoresis experiments. The gene compression ability of RLS, RLSC, RLS/OMV, RLSC/OMVC after incubation at pH 7.4 (A) and pH 4.5 (B) for 20 minutes, respectively, figureFileSmall=zmROQT03Yhv3rx4OX/W9fQ==, figureFileBig=Z2b6jx4vKnObvx34O4aYYA==, tableContent=null), ArticleFig(id=1308816826163884934, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=EN, label=null, caption=null, figureFileSmall=cEVHnoXAPQoZ8GVm+8YlCA==, figureFileBig=PTX7hhJ/I2olmgj2I58Pkg==, tableContent=null), ArticleFig(id=1308816826247771015, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308816814872818467, language=CN, label=Fig.7, caption=
Cytotoxicity of RLS, RLS/OMV, RLSC/OMVC and the control group SM-102, Lipo 2000 after incubation in Caco-2 for 48 hours. Cell viability (A) and cell morphology (B) of RLS, RLS/OMV, RLSC/OMVC and the control group SM-102, Lipo 2000 after incubation in Caco-2 for 48 hours. 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