Article(id=1221483484934226677, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1221483478705684985, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2020-0901, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1591286400000, receivedDateStr=2020-06-05, revisedDate=1592841600000, revisedDateStr=2020-06-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1769153956873, onlineDateStr=2026-01-23, pubDate=1602432000000, pubDateStr=2020-10-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769153956873, onlineIssueDateStr=2026-01-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769153956873, creator=13701087609, updateTime=1769153956873, updator=13701087609, issue=Issue{id=1221483478705684985, tenantId=1146029695717560320, journalId=1189982191388893191, year='2020', volume='55', issue='10', pageStart='2243', pageEnd='2490', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769153955389, creator=13701087609, updateTime=1769154316371, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1221484992832652046, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1221483478705684985, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1221484992832652047, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1221483478705684985, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2428, endPage=2434, ext={EN=ArticleExt(id=1221483485919888210, articleId=1221483484934226677, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Identification of PD-1 small molecule inhibitors and validation in
Panax ginseng, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Tumor immune therapy has been remarkably successful in recent years and several kinds of PD-1/PD-L1 (programmed death-1/programmed death-ligand 1) antibody drugs have been approved by the FDA for treatment of advanced malignant neoplasms. However, as biomacromolecules these antibody drugs have certain drawbacks such as high cost, injection-only administration and immunogenicity; thus, we turned to small molecules that have lower immune risks and better modifiability. Considering the structural diversity of natural products, we chose to investigate the active components in Panax ginseng, a famous and highly valued traditional Chinese medicine. Nine compounds were separated and identified in this research using a HPLC-coupled MS system, and 3 PD-1 binding compounds were identified using the SPR method. The PD-1/PD-L1 inhibitory ability of ginsenoside Rg1, as a representative ginsenoside, was verified by cytopharmacological methods. This research provides a new method for the identification of immune blockade inhibitors in natural products.
, correspAuthors=Shi-zhong CHEN, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2020 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=Dai-dong WANG, Peng-fei TU, Ya-zhuo HUANG, Wan-wan WANG, Jing WANG, Ya HAN, Hong WANG, Shi-zhong CHEN), CN=ArticleExt(id=1221483487983484965, articleId=1221483484934226677, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=人参中PD-1小分子抑制剂的筛选及活性验证, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
近年来,肿瘤免疫疗法取得了巨大的成功,美国FDA批准了多种PD-1/PD-L1(programmed death-1/programmed death-ligand 1)抗体药物用于晚期恶性肿瘤治疗。然而,抗体药物作为生物大分子具有成本高、给药方式单一和较强的免疫不良反应等缺点,因此具有较低免疫风险和更好修饰性的小分子抑制剂成为值得研究的方向。天然产物中蕴涵有丰富的小分子化合物,而目前关于天然产物中PD-1小分子抑制剂的研究却鲜有报道。因此本研究以中药材人参为研究对象,通过液质联用的方法从中鉴定了9个皂苷类成分,并使用表面等离子共振(SPR)技术从中筛选出了3个具有PD-1结合活性的人参皂苷类化合物。最后使用细胞药理学方法对其中代表性化合物人参皂苷Rg1进行了PD-1/PD-L1抑制活性验证。本研究为天然产物中免疫信号通路抑制剂的研究提供了参考。
, correspAuthors=陈世忠, authorNote=null, correspAuthorsNote=
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25: 1163-1174., articleTitle=Structural biology of the immune checkpoint receptor PD-1 and its ligands PD-L1/PD-L2, refAbstract=null)], funds=[Fund(id=1221483495264797123, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, awardId=2018ZX09711001-008-003, language=CN, fundingSource=重大新药创制专项(2018ZX09711001-008-003), fundOrder=null, country=null), Fund(id=1221483495340294597, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, awardId=2018YFC1707303, language=CN, fundingSource=国家重大研发计划项目(2018YFC1707303), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1221483488209977405, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, xref=null, ext=[AuthorCompanyExt(id=1221483488214171709, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, companyId=1221483488209977405, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Pharmaceutical Sciences, Peking University, Beijing 100191, China), AuthorCompanyExt(id=1221483488222560318, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, companyId=1221483488209977405, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=北京大学药学院, 北京 100191)])], figs=[ArticleFig(id=1221483492496556376, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=u8mKXU427IXrhQld1hb5aw==, figureFileBig=4JDH62hMaWagakCe2uL6Wg==, tableContent=null), ArticleFig(id=1221483492630774113, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 1, caption=
HPLC chromatograph of Panax ginseng , figureFileSmall=u8mKXU427IXrhQld1hb5aw==, figureFileBig=4JDH62hMaWagakCe2uL6Wg==, tableContent=null), ArticleFig(id=1221483492890820973, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=4Idnmqt9nkgDd8rwOU6EcA==, figureFileBig=sEZlcVWFIWT1nZ1rhmbg0Q==, tableContent=null), ArticleFig(id=1221483493008261491, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 2, caption=
Total ion chromatograph (TIC) of Panax ginseng , figureFileSmall=4Idnmqt9nkgDd8rwOU6EcA==, figureFileBig=sEZlcVWFIWT1nZ1rhmbg0Q==, tableContent=null), ArticleFig(id=1221483493087953271, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=3H7zG3BiX2CACaIL1Obx9w==, figureFileBig=0e15u1CfwI7QhTJV/XG5JQ==, tableContent=null), ArticleFig(id=1221483493192810877, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 3, caption=
Compound structures of identified components in Panax ginseng (acetyl-Rg1 or isomer excluded) , figureFileSmall=3H7zG3BiX2CACaIL1Obx9w==, figureFileBig=0e15u1CfwI7QhTJV/XG5JQ==, tableContent=null), ArticleFig(id=1221483493301862786, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=y1TEeZ01REvaGtetRBLK3A==, figureFileBig=//IqlPJCj8JtRW3+vmlLOw==, tableContent=null), ArticleFig(id=1221483493457052039, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 4, caption=
SPR signals of PD-1/PD-L1, ginsenoside Rg1/PD-1, ginsenoside Rb1/PD-1 and ginsenoside Re/PD-1 interaction , figureFileSmall=y1TEeZ01REvaGtetRBLK3A==, figureFileBig=//IqlPJCj8JtRW3+vmlLOw==, tableContent=null), ArticleFig(id=1221483493587075471, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=jHVQmWD6iFluW5hVjQq+Mw==, figureFileBig=Ha9RZnmhRP2CclFB+ChXmw==, tableContent=null), ArticleFig(id=1221483493670961556, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 5, caption=
SPR signal of competition experiment of ginsenoside Rg1, ginsenoside Rb1 and ginsenoside Re between PD-1/PD-L1 , figureFileSmall=jHVQmWD6iFluW5hVjQq+Mw==, figureFileBig=Ha9RZnmhRP2CclFB+ChXmw==, tableContent=null), ArticleFig(id=1221483493780013465, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=hWc740Wv/SqT5D2tHD5b2Q==, figureFileBig=Gp8ls9UnHY3tlCDjzFS0Yg==, tableContent=null), ArticleFig(id=1221483493968757148, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 6, caption=
Effects of ginsenoside Rg1 on the interaction of PD-L1 and PD-1 Fc in Jurkat T cells. After Jurkat T cells were incubated in the presence of ginsenoside Rg1 (3, 6, 9 μmol·L-1) or opdivo (3, 6, 9 μmol·L-1) for 24 h, microscopy image showing the association of PD-L1 on Jurkat T cells membrane with PD-1/Fc protein. Green fluorescence (Alexa Fluor® 488-labeled PD-1/Fc protein) indicates the conjugated PD-1 Fc, nucleus was stained by DAPI (blue fluorescence). Results were mean ± SD for three individual experiments which, for each condition, were performed in triplicate. **P < 0.01 vs Control , figureFileSmall=hWc740Wv/SqT5D2tHD5b2Q==, figureFileBig=Gp8ls9UnHY3tlCDjzFS0Yg==, tableContent=null), ArticleFig(id=1221483494065226144, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=H/oqxUq+zzHo+pKKG94p3g==, figureFileBig=6leCFc1HfpOqu4BPW2uhkA==, tableContent=null), ArticleFig(id=1221483494157500837, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 7, caption=
Effects of ginsenoside Rg1 on the cell viability of A549 cells. After A549 cells were incubated in the presence of ginsenoside Rg1 (12.5, 25, 50, 100 μmol·L-1) for 24 h, the cell viability of A549 cells was detected by CCK8 assay, the statistical histogram of cell viability ratio of indicated groups was presented. Results were mean ± SD for three individual experiments which, for each condition, were performed in triplicate. **P < 0.01 vs Control , figureFileSmall=H/oqxUq+zzHo+pKKG94p3g==, figureFileBig=6leCFc1HfpOqu4BPW2uhkA==, tableContent=null), ArticleFig(id=1221483494266552745, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=6TBczzIluLOOC/ZEVQ0dGA==, figureFileBig=3IFra5tIgNfXBy6/WnX0QA==, tableContent=null), ArticleFig(id=1221483494350438826, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Figure 8, caption=
Effects of ginsenoside Rg1 on PBMCs cells triggered A549 cells apoptosis. A549 cells and PBMCs cells were co-cultured in the presence of ginsenoside Rg1 (3, 6, 9 μmol·L-1), or opdivo (3, 6, 9 μmol·L-1) for 24 h, followed by apoptosis analysis of A549 cells with flow cytometry. Results were mean ± SD for three individual experiments which, for each condition, were performed in triplicate. **P < 0.01 vs Control , figureFileSmall=6TBczzIluLOOC/ZEVQ0dGA==, figureFileBig=3IFra5tIgNfXBy6/WnX0QA==, tableContent=null), ArticleFig(id=1221483494438519213, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Time/min | Ratio of acetonitrile/% |
| 0→15 | 17 |
| 15→40 | 17→31 |
| 40→60 | 31→33 |
| 60→70 | 33→34 |
| 70→80 | 35→36 |
| 80→100 | 36→41 |
| 100→120 | 41→70 |
), ArticleFig(id=1221483494547571120, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Table 1, caption=
Gradient condition of HPLC analysis of Panax Ginseng
, figureFileSmall=null, figureFileBig=null, tableContent=
| Time/min | Ratio of acetonitrile/% |
| 0→15 | 17 |
| 15→40 | 17→31 |
| 40→60 | 31→33 |
| 60→70 | 33→34 |
| 70→80 | 35→36 |
| 80→100 | 36→41 |
| 100→120 | 41→70 |
), ArticleFig(id=1221483494635651507, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| No. | tR/min | Formula | MS (error in ppm) | (+) ESI-MSn Fragment ion | Identification |
| 1* | 39.129 | C48H82O18 | 945.495 3 [M-H]- (-3.11) | 799.442 4 [M-H-Rha]- 637.397 1 [M-H-Rha-Glc]- 475.353 7 [M-H-Rha-Glc-Glc]- | Ginsenoside Re |
| 2* | 61.166 | C54H92O23 | 1107.537 7 [M-H]- (2.23) | 946.497 9 [M-H-Glc]- 784.448 3 [M-H-Glc-Glc]- 621.410 3 [M-H-Glc-Glc-Glc]- | Ginsenoside Rb1 |
| 3 | 65.136 | C53H90O22 | 1077.526 9 [M-H]- (2.23) | 945.497 8 [M-H-Ara]- 783.448 5 [M-H-Ara-Glc]- 621.402 6 [M-H-Ara-Glc-Glc]- | Ginsenoside Rc |
| 6 | 71.031 | C48H76O19 | 955.443 2 [M-H]- (2.23) | 793.398 8 [M-H-Glc]- 631.394 6 [M-H-Glc-Glc]- 455.389 0 [M-H-Glc-Glc-Glc]- | Ginsenoside Ro |
| 8 | 80.099 | C48H82O18 | 945.498 6 [M-H]- (-0.26) | 799.442 4 [M-H-Glc]- 637.397 1 [M-H-Glc-Glc]- 475.353 7 [M-H-Glc-Glc-Glc]- | Ginsenoside Rd |
| 9 | 86.871 | C42H66O14 | 793.398 1 [M-H]- (0.60) | 631.351 7 [M-H-Glc]- 455.328 0 [M-H-Glc-Glc]- 491.304 7 [M-H-Glc]- | Chikusetsusaponin Iva |
| 13 | 108.188 | C36H62O10 | 653.301 2 [M-H]- | 491.304 7 [M-H-Glc]- | Pseudo Rt5 |
| 14 | 110.277 | C44H74O15 | 841.693 4 [M-H]- (1.04) | 799.683 2 [M-H-CH2CO]- 637.693 4 [M-H-CH2CO-Glc]- 475.608 4 [M-H-CH2CO-Glc-Glc]- | Acetyl-Rg1 or isomer |
| 15* | 113.929 | C42H72O14 | 799.446 7 [M-H]- (-0.82) | 637.481 3 [M-H-Glc]- 475.412 9 [M-H-Glc-Glc]- | Ginsenoside Rg1 |
), ArticleFig(id=1221483494732120503, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Table 2, caption=
Identification of 9 compounds in Panax ginseng under negative ion mode of LC-MSn. tR: Retention time; Glc: Glucose; Rha: Rhamnose; Ara: Arabinose. *Compounds confirmed by comparison with reference standards
, figureFileSmall=null, figureFileBig=null, tableContent=
| No. | tR/min | Formula | MS (error in ppm) | (+) ESI-MSn Fragment ion | Identification |
| 1* | 39.129 | C48H82O18 | 945.495 3 [M-H]- (-3.11) | 799.442 4 [M-H-Rha]- 637.397 1 [M-H-Rha-Glc]- 475.353 7 [M-H-Rha-Glc-Glc]- | Ginsenoside Re |
| 2* | 61.166 | C54H92O23 | 1107.537 7 [M-H]- (2.23) | 946.497 9 [M-H-Glc]- 784.448 3 [M-H-Glc-Glc]- 621.410 3 [M-H-Glc-Glc-Glc]- | Ginsenoside Rb1 |
| 3 | 65.136 | C53H90O22 | 1077.526 9 [M-H]- (2.23) | 945.497 8 [M-H-Ara]- 783.448 5 [M-H-Ara-Glc]- 621.402 6 [M-H-Ara-Glc-Glc]- | Ginsenoside Rc |
| 6 | 71.031 | C48H76O19 | 955.443 2 [M-H]- (2.23) | 793.398 8 [M-H-Glc]- 631.394 6 [M-H-Glc-Glc]- 455.389 0 [M-H-Glc-Glc-Glc]- | Ginsenoside Ro |
| 8 | 80.099 | C48H82O18 | 945.498 6 [M-H]- (-0.26) | 799.442 4 [M-H-Glc]- 637.397 1 [M-H-Glc-Glc]- 475.353 7 [M-H-Glc-Glc-Glc]- | Ginsenoside Rd |
| 9 | 86.871 | C42H66O14 | 793.398 1 [M-H]- (0.60) | 631.351 7 [M-H-Glc]- 455.328 0 [M-H-Glc-Glc]- 491.304 7 [M-H-Glc]- | Chikusetsusaponin Iva |
| 13 | 108.188 | C36H62O10 | 653.301 2 [M-H]- | 491.304 7 [M-H-Glc]- | Pseudo Rt5 |
| 14 | 110.277 | C44H74O15 | 841.693 4 [M-H]- (1.04) | 799.683 2 [M-H-CH2CO]- 637.693 4 [M-H-CH2CO-Glc]- 475.608 4 [M-H-CH2CO-Glc-Glc]- | Acetyl-Rg1 or isomer |
| 15* | 113.929 | C42H72O14 | 799.446 7 [M-H]- (-0.82) | 637.481 3 [M-H-Glc]- 475.412 9 [M-H-Glc-Glc]- | Ginsenoside Rg1 |
), ArticleFig(id=1221483494820200890, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | KD/mol·L-1 | Chi2 (RU2) | Rmax (RU) |
| Ginsenoside Rg1 | 1.87×10-5 | 0.04 | 3.5 |
| Ginsenoside Rb1 | 2.90×10-6 | 1.32 | 14.4 |
| Ginsenoside Re | 7.88×10-6 | 0.04 | 2.0 |
), ArticleFig(id=1221483494904086973, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Table 3, caption=
SPR results of active compounds interacting with PD-1
, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | KD/mol·L-1 | Chi2 (RU2) | Rmax (RU) |
| Ginsenoside Rg1 | 1.87×10-5 | 0.04 | 3.5 |
| Ginsenoside Rb1 | 2.90×10-6 | 1.32 | 14.4 |
| Ginsenoside Re | 7.88×10-6 | 0.04 | 2.0 |
), ArticleFig(id=1221483495013138880, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | Blank | Maximum inhibiting signal | Maximum inhibition ratio/% |
| Ginsenoside Rg1 | 30.966 8 | 15.005 3 | 52.56 |
| Ginsenoside Rb1 | 98.949 9 | 80.928 5 | 18.21 |
| Ginsenoside Re | 104.180 9 | 71.440 8 | 31.43 |
), ArticleFig(id=1221483495113802176, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1221483484934226677, language=CN, label=Table 4, caption=
SPR results of ginsenoside Rg1, ginsenoside Rb1 and ginsenoside Re in PD-1/PD-L1 competition experiment
, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | Blank | Maximum inhibiting signal | Maximum inhibition ratio/% |
| Ginsenoside Rg1 | 30.966 8 | 15.005 3 | 52.56 |
| Ginsenoside Rb1 | 98.949 9 | 80.928 5 | 18.21 |
| Ginsenoside Re | 104.180 9 | 71.440 8 | 31.43 |
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