Article(id=1193558471741244061, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2024-0531, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1717430400000, receivedDateStr=2024-06-04, revisedDate=1727625600000, revisedDateStr=2024-09-30, acceptedDate=null, acceptedDateStr=null, onlineDate=1762496114906, onlineDateStr=2025-11-07, pubDate=1736611200000, pubDateStr=2025-01-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762496114906, onlineIssueDateStr=2025-11-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762496114906, creator=13701087609, updateTime=1762496114906, updator=13701087609, issue=Issue{id=1193558470239678932, tenantId=1146029695717560320, journalId=1189982191388893191, year='2025', volume='60', issue='1', pageStart='1', pageEnd='244', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762496114549, creator=13701087609, updateTime=1764224942173, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200809698921402865, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200809698921402866, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=96, endPage=104, ext={EN=ArticleExt(id=1193558472047428258, articleId=1193558471741244061, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Tubuloside B inhibits A
β1-42 fibrillization and alleviates amyloid-induced cytotoxicity, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
This study aimed to investigate the inhibitory effect of tubuloside B (Tub B) on amyloid β-protein (Aβ), and analyse the potential mechanism. A model of amyloid fibril was established by incubation of Aβ1-42 in vitro. Thioflavin-T (ThT), Congo red (CR), 8-anilino-1-naphthene sulfonic acid (ANS) staining and transmission electron microscopy (TEM) were applied to detect the suppression of Tub B on the formation of Aβ1-42 fibril. Circular dichroism (CD) was used to analyse the regulatory effect of Tub B on the secondary structure of Aβ1-42. 3-(4, 5-Dimethyl-2-thiazole) -2, 5-diphenyltetrazolium bromide (MTT) and red blood cell hemolysis experiments were used to investigate the attenuation of Tub B on Aβ1-42 induced cytotoxicity. 2', 7'-Dichlorofluorescin diacetate (DCFH-DA) staining was used to assess the expression of intracellular reactive oxygen species (ROS) induced by Aβ1-42. And molecular docking experiment was used to explore the interaction between Tub B and Aβ1-42. The results indicated that Tub B could inhibit Aβ1-42 fibrillization in a certain extent, which retarded the structural transition of α-helix to β-sheet of Aβ1-42, hampered the exposure of hydrophobic regions, and attenuated amyloid-induced cytotoxicity and hemolysis. In summary, Tub B can prevent the formation of Aβ1-42 amyloid fibril, which may be related to its antioxidant activity and hydrogen bonding and hydrophobic interactions with protein molecules. All animal experiments were approved by the Experimental Animal Research Center of Air Force Medical University (No. 20190051).
, correspAuthors=Ai-dong WEN, Jing-wen WANG, 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, authorCompany=null, fund=null, authors=null, authorsList=Di ZHANG, Juan-li ZHANG, Ai-dong WEN, Jing-wen WANG), CN=ArticleExt(id=1193558792467087724, articleId=1193558471741244061, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=管花苷B抑制A
β1-42淀粉样纤维化并降低其细胞毒性的研究, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
本文旨在探讨管花苷B (tubuloside B, Tub B) 对β-淀粉样蛋白(amyloid β-protein, Aβ) 纤维化的抑制作用及潜在作用机制。采用体外孵育Aβ1-42建立蛋白质淀粉样纤维化模型, 利用硫黄素-T (thioflavin T, ThT)、刚果红(Congo red, CR)、8-苯胺-1-萘磺酸(8-anilino-1-naphthalene sulfonic acid, ANS) 染色和透射电子显微镜(transmission electron microscope, TEM) 考察Tub B对Aβ1-42纤维形成的抑制作用; 圆二色谱(circular dichroism, CD) 分析Tub B对Aβ1-42二级结构的影响; 3-(4, 5-二甲基-2-噻唑)-2, 5-二苯基溴化四氮唑噻唑蓝[3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2H-tetrazolium bromide, MTT] 和红细胞溶血实验研究Tub B对Aβ1-42诱导的细胞毒性的抑制作用; 2', 7'-二氯二氢荧光素二乙酸酯(2', 7'-dichlorofluorescin diacetate, DCFH-DA) 染色检测Tub B对Aβ1-42诱导的细胞内活性氧(reactive oxygen species, ROS) 含量的影响; 以及利用分子对接实验研究Tub B与Aβ1-42分子相互作用。结果显示, Tub B对Aβ1-42淀粉样纤维形成具有一定抑制作用, 可降低Aβ1-42二级结构中α-螺旋结构向β-折叠结构的转化, 减少疏水区域暴露, 减弱Aβ1-42引起的细胞毒性和红细胞溶血性, 降低细胞损伤。综上所述, Tub B能够抑制蛋白质淀粉样纤维形成, 且这种抑制作用可能与其抗氧化活性及与蛋白质分子间的氢键和疏水作用力有关。本研究的动物实验经空军军医大学动物实验伦理委员会批准(批准号: 20190051)。
, correspAuthors=文爱东, 王婧雯, authorNote=null, correspAuthorsNote=
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in vitro aging [J]. J Biol Chem, 2006, 281: 2151-2161., articleTitle=null, refAbstract=null), Reference(id=1194708361095652046, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[41], rfOrder=40, authorNames=null, journalName=null, refType=null, unstructuredReference=Cunnane SC, Trushina E, Morland C, et al. Brain energy rescue: an emerging therapeutic concept for neurodegenerative disorders of ageing [J]. Nat Rev Drug Discov, 2020, 19: 609-633., articleTitle=null, refAbstract=null), Reference(id=1194708361162760911, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[42], rfOrder=41, authorNames=null, journalName=null, refType=null, unstructuredReference=Bell SM, Barnes K, De Marco M, et al. Mitochondrial dysfunction in Alzheimer's disease: a biomarker of the future? [J]. Biomedicines, 2021, 9: 63., articleTitle=null, refAbstract=null), Reference(id=1194708361229869776, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[43], rfOrder=42, authorNames=null, journalName=null, refType=null, unstructuredReference=Stranahan AM, Mattson MP. Recruiting adaptive cellular stress responses for successful brain ageing [J]. Nat Rev Neurosci, 2012, 13: 209-216., articleTitle=null, refAbstract=null)], funds=[Fund(id=1194708357996061348, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, awardId=82074321, language=CN, fundingSource=国家自然科学基金资助项目(82074321), fundOrder=null, country=null), Fund(id=1194708358067364517, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, awardId=81602979, language=CN, fundingSource=国家自然科学基金资助项目(81602979), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1194708354271519345, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, xref=null, ext=[AuthorCompanyExt(id=1194708354284102258, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, companyId=1194708354271519345, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Department of Pharmacy, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China), AuthorCompanyExt(id=1194708354292490867, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, companyId=1194708354271519345, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=空军军医大学第一附属医院药剂科, 陕西 西安 710032)])], figs=[ArticleFig(id=1194708356133790354, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=ZSSv/PFZm4fcf4fS629Jkg==, figureFileBig=/p4lvp2M7E4flZg2Jaxsvg==, tableContent=null), ArticleFig(id=1194708356192510611, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 1, caption=
The chemical structure of tubuloside B (Tub B) , figureFileSmall=ZSSv/PFZm4fcf4fS629Jkg==, figureFileBig=/p4lvp2M7E4flZg2Jaxsvg==, tableContent=null), ArticleFig(id=1194708356284785300, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=yihjYG4lVJ5VfRC8KTvnMA==, figureFileBig=inT1/pvQOaaPTkJsWH296Q==, tableContent=null), ArticleFig(id=1194708356356088469, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 2, caption=
The effect of different concentrations of Tub B on amyloid β-protein (Aβ) fibrillization. A: Thioflavin-T (ThT) fluorescence growth curves of Aβ1-42 after 24 h of incubation; B: ThT fluorescence intensity of Aβ1-42 with various concentrations of Tub B at 24 h; C: The lag time of Aβ1-42 with various concentrations of Tub B; D: Congo red (CR) binding spectra were taken at 0 h; E: CR binding spectra were taken at 24 h. n = 3, x±s. *P < 0.05, **P < 0.01 vs Aβ1-42 , figureFileSmall=yihjYG4lVJ5VfRC8KTvnMA==, figureFileBig=inT1/pvQOaaPTkJsWH296Q==, tableContent=null), ArticleFig(id=1194708356423197334, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=T0tzheTYa6nRDQxvbXuMMQ==, figureFileBig=JwZjgXF40g2AHKEs1Yjqug==, tableContent=null), ArticleFig(id=1194708356515472023, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 3, caption=
Representative 8-anilino-1-naphthene sulfonic acid (ANS) fluorescence emission spectra of Aβ1-42 with various concentrations of Tub B. A: ANS fluorescence emission spectra were taken at 0 h; B: ANS fluorescence emission spectra were taken at 24 h. n = 3, x±s , figureFileSmall=T0tzheTYa6nRDQxvbXuMMQ==, figureFileBig=JwZjgXF40g2AHKEs1Yjqug==, tableContent=null), ArticleFig(id=1194708356582580888, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=s07aI5Soa2G5gcF2yd3mxA==, figureFileBig=vKjVmgFDCLttlVaE7gvTfQ==, tableContent=null), ArticleFig(id=1194708356641301145, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 4, caption=
Representative circular dichroism (CD) spectra of Aβ1-42 with various concentrations of Tub B. A: CD spectra were taken at 0 h; B: CD spectra were taken at 24 h. n = 3, x±s , figureFileSmall=s07aI5Soa2G5gcF2yd3mxA==, figureFileBig=vKjVmgFDCLttlVaE7gvTfQ==, tableContent=null), ArticleFig(id=1194708356700021402, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=3gzQEqrPib+vanJOD5g4fA==, figureFileBig=sI8pD8gb29+8AFcCKdwp8w==, tableContent=null), ArticleFig(id=1194708356758741659, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 5, caption=
Transmission electron microscopy (TEM) images of Aβ1-42 with various concentrations of Tub B after 24 h of incubation. Scale bars: 200 nm , figureFileSmall=3gzQEqrPib+vanJOD5g4fA==, figureFileBig=sI8pD8gb29+8AFcCKdwp8w==, tableContent=null), ArticleFig(id=1194708356825850524, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=XGyJ76AiELXRl0QBLSHZpQ==, figureFileBig=DVdaPoXT9mi4U/U6BUPidw==, tableContent=null), ArticleFig(id=1194708356892959389, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 6, caption=
Cytotoxicity and hemolytic assays of Aβ1-42 with various concentrations of Tub B after 24 h of incubation. A: Viability percentage of SH-SY5Y cells upon treatment with Aβ1-42 and addition of different concentrations of Tub B; B: Hemolysis percentage of Aβ1-42 with different concentrations of Tub B. n = 3, x±s. ##P < 0.01 vs control; **P < 0.01 vs Aβ1-42 , figureFileSmall=XGyJ76AiELXRl0QBLSHZpQ==, figureFileBig=DVdaPoXT9mi4U/U6BUPidw==, tableContent=null), ArticleFig(id=1194708356981039774, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=kWhr125ViZd4EIPAdfcJlQ==, figureFileBig=SeSsCP1YmaXAZRusKKprMQ==, tableContent=null), ArticleFig(id=1194708357043954335, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 7, caption=
Inhibitory effect of Tub B against preformed Aβ1-42-induced cytotoxicity and intracellular reactive oxygen species (ROS) accumulation. A: Viability percentage of SH-SY5Y cells upon treatment with preformed Aβ1-42 fibril and the addition of different concentrations of Tub B; B: Fluorescence intensity of the intracellular ROS in SH-SY5Y cells; C: Confocal microscopy imaging of the intracellular ROS levels in SH-SY5Y cells. Scale bars: 100 μm. n = 3, x±s. ##P < 0.01 vs control; **P < 0.01 vs Aβ1-42 , figureFileSmall=kWhr125ViZd4EIPAdfcJlQ==, figureFileBig=SeSsCP1YmaXAZRusKKprMQ==, tableContent=null), ArticleFig(id=1194708357643739808, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=GGWr6NoBdK+KssIMB43JLg==, figureFileBig=hPXTnjSV8KF/CMSe1k9s+w==, tableContent=null), ArticleFig(id=1194708357710848673, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Figure 8, caption=
Schematic diagrams (3D and 2D) of the binding modes of Tub B with Aβ1-42 , figureFileSmall=GGWr6NoBdK+KssIMB43JLg==, figureFileBig=hPXTnjSV8KF/CMSe1k9s+w==, tableContent=null), ArticleFig(id=1194708357786346146, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Time/h | Helix/% | Antiparallel/% | Parallel/% | Beta-turn/% | Rndm. coil/% |
| Aβ1-42 | 0 | 34.50 | 8.70 | 8.20 | 18.30 | 30.10 |
| Aβ1-42 | 24 | 18.80 | 16.30 | 12.60 | 27.50 | 24.90 |
| Aβ1-42 + 50 µmol·L-1 Tub B | 24 | 22.50 | 14.90 | 11.80 | 24.90 | 25.60 |
| Aβ1-42 + 100 µmol·L-1 Tub B | 24 | 25.80 | 13.60 | 10.90 | 23.80 | 26.20 |
| Aβ1-42 + 150 µmol·L-1 Tub B | 24 | 28.20 | 11.20 | 10.10 | 21.70 | 28.70 |
), ArticleFig(id=1194708357849260707, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193558471741244061, language=CN, label=Table 1, caption=
Estimates of the secondary structural components of Aβ1-42 with different concentrations of Tub B as obtained from CD spectral analyses
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Time/h | Helix/% | Antiparallel/% | Parallel/% | Beta-turn/% | Rndm. coil/% |
| Aβ1-42 | 0 | 34.50 | 8.70 | 8.20 | 18.30 | 30.10 |
| Aβ1-42 | 24 | 18.80 | 16.30 | 12.60 | 27.50 | 24.90 |
| Aβ1-42 + 50 µmol·L-1 Tub B | 24 | 22.50 | 14.90 | 11.80 | 24.90 | 25.60 |
| Aβ1-42 + 100 µmol·L-1 Tub B | 24 | 25.80 | 13.60 | 10.90 | 23.80 | 26.20 |
| Aβ1-42 + 150 µmol·L-1 Tub B | 24 | 28.20 | 11.20 | 10.10 | 21.70 | 28.70 |
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