Article(id=1241379096165413311, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241379085109219745, articleNumber=null, orderNo=null, doi=10.13343/j.cnki.wsxb.20230789, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1703088000000, receivedDateStr=2023-12-21, revisedDate=null, revisedDateStr=null, acceptedDate=1710864000000, acceptedDateStr=2024-03-20, onlineDate=1773897440234, onlineDateStr=2026-03-19, pubDate=1720022400000, pubDateStr=2024-07-04, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773897440234, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773897440234, creator=13701087609, updateTime=1773897440234, updator=13701087609, issue=Issue{id=1241379085109219745, tenantId=1146029695717560320, journalId=1192105938417971205, year='2024', volume='64', issue='7', pageStart='2151', pageEnd='2582', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1773897437598, creator=13701087609, updateTime=1773897688675, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241380138257010733, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241379085109219745, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241380138257010734, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241379085109219745, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2453, endPage=2464, ext={EN=ArticleExt(id=1241379096538706410, articleId=1241379096165413311, tenantId=1146029695717560320, journalId=1192105938417971205, language=EN, title=Biological characteristics and pathogenicity of
Corynebacteriumpseudotuberculosiscp40-deleted strains constructed by CRISPR/Cas9, columnId=1241045257748533520, journalTitle=Acta Microbiologica Sinica, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=
[Objective] To establish a more efficient knockout method for the serine protease coding gene (cp40) ofCorynebacteriumpseudotuberculosis and evaluate the role of this gene in the pathogenicity ofC.pseudotuberculosis. [Methods] A vector pEC-cp40gRNA-HDarm, with guide RNA, upstream and downstream sequences flankingcp40 ofC.pseudotuberculosis Xuanhan strain (XH02), and spacer, was constructed from pECXK99E. The recombinant vector pEC-cp40gRNA-HDarm was transferred intoC.pseudotuberculosis competent cells carrying pCas9gRNA-ccdB to form the CRISPR/Cas9 gene editing system for the deletion ofcp40. The roles ofcp40 in the pathogenicity ofC.pseudotuberculosis were evaluated by comparison of the colony morphology and growth curves between thecp40-deleted (Δcp40) strain and wild type (WT) strain, the viability and interleukin (IL)-1β secretion of J774A.1 macrophages infected with Δcp40 and WTinvitro, and the mortality and organ bacterial loads in mice infected with Δcp40 and WTinvivo. [Results] We successfully constructed thecp40-deleted strain XH02Δcp40 by using the established dual-plasmid CRISPR/Cas9 editing system. Compared with WT (XH02), XH02Δcp40 showed no obvious difference in the colony morphology or growth curve. However, the J774A.1 cells infected with XH02Δcp40 showed decreased lactate dehydrogenase (LDH) release (P=0.06) and propidium iodide (PI) staining ratio (P < 0.01) compared with those infected with XH02. The mortality of XH02Δcp40-infected mice reduced by 50% and the bacterial loads in the liver and kidney of XH02Δcp40-infected mice significantly reduced compared with those of XH02-infected mice (P < 0.001). [Conclusion] The CRISPR/Cas9 gene editing system established in this study can effectively deletecp40 ofC.pseudotuberculosis. The results confirm thatcp40 is a virulence-related gene, providing a foundation for subsequent research on the infection ofC.pseudotuberculosis based on this gene.
, correspAuthors=Zuoyong ZHOU, authorNote=null, correspAuthorsNote=
, copyrightStatement=Copyright ©2024 Acta Microbiologica 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=Hong LÜ, Xincan LI, Luting NIU, Zhiying WANG, Zuoyong ZHOU), CN=ArticleExt(id=1241379100271637188, articleId=1241379096165413311, tenantId=1146029695717560320, journalId=1192105938417971205, language=CN, title=基于CRISPR/Cas9构建伪结核棒状杆菌
cp40敲除株及其生物学特性与致病性研究, columnId=1192149544164012138, journalTitle=微生物学报, columnName=研究报告, runingTitle=null, highlight=null, articleAbstract=
【目的】建立更高效的伪结核棒状杆菌(Corynebacteriumpseudotuberculosis, Cp)靶基因敲除方法,敲除丝氨酸蛋白酶编码基因(cp40),并评价其在Cp感染致病中的作用。【方法】以pECXK99E为载体,Cp宣汉株(XH02)cp40为靶基因,设计含CRISPR/Cas9的间隔序列(spacer)、导向RNA (guide RNA, gRNA)和cp40上下游同源臂的表达质粒(pEC-cp40gRNA-HDarm),转入含pCas9gRNA-ccdB的Cp感受态细胞,构建CRISPR/Cas9基因编辑系统以敲除cp40基因。通过比较cp40敲除株和野生株的菌落形态及生长曲线、体外对J774A.1巨噬细胞活力及白细胞介素(interleukin, IL)-1β分泌,以及体内感染小鼠致死率及脏器载菌水平,研究cp40与该病原感染致病之间的关系。【结果】应用所建立的双质粒CRISPR/Cas9编辑系统成功获得XH02的cp40敲除株(XH02Δcp40)。与XH02相比,XH02Δcp40在菌落形态及生长曲线上无明显差异,但XH02Δcp40感染J774A.1巨噬细胞的乳酸脱氢酶(lactate dehydrogenase, LDH)释放(P=0.06)、碘化丙锭(propidium iodide, PI)染色比例均降低(P < 0.01),体内感染小鼠致死率下降50%,并且被感染小鼠肝脏和肾脏中Cp含量显著降低(P < 0.001)。【结论】本研究所建立的CRISPR/Cas9编辑系统可较高效敲除Cp基因,证实cp40是该病原感染致病相关基因,为后续基于该基因研究Cp感染致病机制奠定基础。
, correspAuthors=周作勇, authorNote=null, correspAuthorsNote=null, copyrightStatement=版权所有©《微生物学报》编辑部2024, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=6ypmr33srPq2yrkqKiwIeg==, magXml=cJ1xqHUlqJnSlMk8qxmDcA==, pdfUrl=null, pdf=Uz6hTsZzQOX9BO1LGR1fqA==, pdfFileSize=882359, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=4CsU8RBZ68uKXV2PyItiGA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=luvo/4tg3LYG1LP+oohz3Q==, mapNumber=null, authorCompany=null, fund=null, authors=
#These authors contributed equally to this work.
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Diagram of pEC-cp40gRNA-HDarm plasmid construction andcp40 knockout pattern. A: pEC-cp40gRNA-HDarm plasmid construction. B:cp40 knockout pattern by CRISPR/Cas9., figureFileSmall=Z4c41R0z+51NfHY88FPxIQ==, figureFileBig=0KeGoWcxah34SO56PlW0yA==, tableContent=null), ArticleFig(id=1241445815340814394, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图1, caption=
pEC-cp40gRNA-HDarm质粒构建及cp40敲除模式图, figureFileSmall=Z4c41R0z+51NfHY88FPxIQ==, figureFileBig=0KeGoWcxah34SO56PlW0yA==, tableContent=null), ArticleFig(id=1241445815487615044, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 2, caption=
Results of the pEC-cp40gRNA construction. A: Amplification ofcp40gRNA. M: 500 bp DNA marker; Lane 1:cp40gRNA. B: Digestion ofcp40gRNA. M: 500 bp DNA Marker; Lane 1: Digestion ofcp40gRNA. C: Digestion of pECXK99E. M: 10000 bp DNA marker; Lane 1: Digestion of pECXK99E. D: Identification of the pEC-cp40gRNA plasmid. M: 2000 bp DNA marker; Lane 1: pECXK99E empty vector; Lane 2: pEC-cp40gRNA., figureFileSmall=tLsF7qhm5+RWQqzXOWL1SQ==, figureFileBig=p2F17y3Bd3iB5TrLHVGMrg==, tableContent=null), ArticleFig(id=1241445815693135948, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图2, caption=
pEC-cp40gRNA构建结果, figureFileSmall=tLsF7qhm5+RWQqzXOWL1SQ==, figureFileBig=p2F17y3Bd3iB5TrLHVGMrg==, tableContent=null), ArticleFig(id=1241445815852519511, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 3, caption=
Results of the pEC-cp40gRNA-HDarm construction. A: Ring opening of the pEC-cp40gRNA plasmid. M: 10000 bp DNA marker; Lane 1: Amplification of pEC-cp40gRNA. B: Amplification ofcp40 upstream homologous arm from XH02. M: 2000 bp DNA marker; Lane 1: Upstream homologous arm. C: Amplification ofcp40 downstream homologous arm from XH02. M: 2000 bp DNA marker; Lane 1: Downstream homologous arm. D: Ligate of the upstream and downstream homologous arms. M: 2000 bp DNA marker; Lane 1: Ligate of the upstream and downstream homologous arms., figureFileSmall=CwlVUmoBv4SYwn9712Crtw==, figureFileBig=OtUGKFsSBI4RUolUdcCw0w==, tableContent=null), ArticleFig(id=1241445816141926497, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图3, caption=
pEC-cp40gRNA-HDarm的构建结果, figureFileSmall=CwlVUmoBv4SYwn9712Crtw==, figureFileBig=OtUGKFsSBI4RUolUdcCw0w==, tableContent=null), ArticleFig(id=1241445816372613223, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 4, caption=
Results ofcp40-deleted strains identification. M: 5000 bp DNA marker; Lane 1: XH02; Lane 2: XH02Δcp40., figureFileSmall=+VjY6UJDR5gkSrTNFM3gNg==, figureFileBig=bDCreMQX4khyJrJ2YYyl7A==, tableContent=null), ArticleFig(id=1241445816506830964, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图4, caption=
cp40敲除株的鉴定结果, figureFileSmall=+VjY6UJDR5gkSrTNFM3gNg==, figureFileBig=bDCreMQX4khyJrJ2YYyl7A==, tableContent=null), ArticleFig(id=1241445816628465787, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 5, caption=
Colony morphology and growth curves of XH02 and XH02Δcp40. A: Colony morphology of XH02. B: Colony morphology of XH02Δcp40. C: Growth curves of XH02 and XH02Δcp40. The data on growth curve represented mean±SE., figureFileSmall=Z7KfmqGrIsQvCMg72IjVHQ==, figureFileBig=NnnhHyMGc6Pq7cchJ8M0aw==, tableContent=null), ArticleFig(id=1241445816750100616, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图5, caption=
XH02和XH02Δcp40的菌落形态及生长曲线, figureFileSmall=Z7KfmqGrIsQvCMg72IjVHQ==, figureFileBig=NnnhHyMGc6Pq7cchJ8M0aw==, tableContent=null), ArticleFig(id=1241445816859152527, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 6, caption=
Results of LDH release and PI stain proportion in J774A.1 infected with XH02 and XH02Δcp40. A: The level of LDH release in J774A.1 infected with XH02 or XH02Δcp40. B: Propidium iodide (PI) staining proportion of J774A.1 infected with XH02 or XH02Δcp40. UI: Uninfected J774A.1. **:P < 0.01., figureFileSmall=DThE3OL6eKdLZUMvIIuteg==, figureFileBig=bL2XmVJZ/1CN4MUT1rYXuw==, tableContent=null), ArticleFig(id=1241445818390073494, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图6, caption=
XH02和XH02Δcp40感染J774A.1细胞的LDH释放水平及PI染色比例检测结果, figureFileSmall=DThE3OL6eKdLZUMvIIuteg==, figureFileBig=bL2XmVJZ/1CN4MUT1rYXuw==, tableContent=null), ArticleFig(id=1241445818520096923, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 7, caption=
Results of IL-1β secretion in J774A.1 infected with XH02Δcp40. UI: Uninfected J774A.1. *:P < 0.05., figureFileSmall=mfzpnQp5Lfo1yR9Z8yF6yw==, figureFileBig=6ATLg4m/4EMHHfooECtqSw==, tableContent=null), ArticleFig(id=1241445818629148835, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图7, caption=
XH02和XH02Δcp40感染J774A.1细胞IL-1β分泌水平检测结果, figureFileSmall=mfzpnQp5Lfo1yR9Z8yF6yw==, figureFileBig=6ATLg4m/4EMHHfooECtqSw==, tableContent=null), ArticleFig(id=1241445818964693166, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Figure 8, caption=
Survival curve and bacterial load in organs of mice infected with XH02 and XH02Δcp40. A: Survival curves of KM mice infected with XH02 and XH02Δcp40. B−D: Bacterial loads in liver, spleen, and kidney of KM mice infected with XH02 and XH02Δcp40.***:P < 0.001., figureFileSmall=PcRNurUgL8KwNVDz/jVM8Q==, figureFileBig=hAwi1ZQZCoctimIDmt3Zww==, tableContent=null), ArticleFig(id=1241445819094716598, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=图8, caption=
XH02和XH02Δcp40感染小鼠生存曲线及脏器载菌量, figureFileSmall=PcRNurUgL8KwNVDz/jVM8Q==, figureFileBig=hAwi1ZQZCoctimIDmt3Zww==, tableContent=null), ArticleFig(id=1241445819220545728, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=EN, label=Table 1, caption=
Primers used in this study
, figureFileSmall=null, figureFileBig=null, tableContent=
| Primer name | Sequence of primers (5′→3′) | Purpose | Product length (bp) |
| Underline indicates the restriction sites; Wavy line indicates the spacer; * indicates that if the construction of pEC-cp40gRNA plasmid is success, the amplified fragment is 593 bp, and the amplified fragment of pECXK99E empty vector is 471 bp;# indicates that the amplified fragment of thecp40-deleted strain is 1 400 bp, and the amplified fragment of wild type strain is 2 540 bp. |
| cp40gRNA-F |  | cp40gRNA amplification | 122 |
| gRNA-R | CCCGTCGACCCTGGAAAAAAAGCAC |
| pECjd-F | CACTCCCGTTCTGGATAAT | Detect whether the pEC-cp40gRNA plasmid was successfully constructed | 471/593* |
| pECjd-R | TCACCGACAAACAACAGATAA |
| cp40UP-F | CAGGATTGATGGGAAGGGAGAAACCTTTACAGC | Amplification of upstream homologous arm incp40 | 622 |
| cp40UP-R | ACTACTGGTAGTGCCTGCCCCTTCAAT |
| cp40DOWN-F | GCAGGCACTACCAGTAGTTTTCCTTTC | Amplification of downstream homologous arm incp40 | 615 |
| cp40DOWN-R | CGCTTCCGTGCTGGTTGGGCCGGAAAATAAC |
| pEC-cp40-F | CGGCCCAACCAGCACGGAAGCGGAACACGTAGAAAG | Ring opening of the pEC-cp40gRNA plasmid | 7 076 |
| pEC-cp40-R | GTTTCTCCCTTCCCATCAATCCTGCCTATTTG |
| cp40-JD-F | AGAAACGTCACTAAGCTGCA | Screening forcp40 missing strains | 2 540/ 1 400# |
| cp40-JD-R | GGTCAAAGTTCAAGTCCAGG |
), ArticleFig(id=1241445819287654600, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241379096165413311, language=CN, label=表1, caption=
本研究所用引物
, figureFileSmall=null, figureFileBig=null, tableContent=
| Primer name | Sequence of primers (5′→3′) | Purpose | Product length (bp) |
| Underline indicates the restriction sites; Wavy line indicates the spacer; * indicates that if the construction of pEC-cp40gRNA plasmid is success, the amplified fragment is 593 bp, and the amplified fragment of pECXK99E empty vector is 471 bp;# indicates that the amplified fragment of thecp40-deleted strain is 1 400 bp, and the amplified fragment of wild type strain is 2 540 bp. |
| cp40gRNA-F |  | cp40gRNA amplification | 122 |
| gRNA-R | CCCGTCGACCCTGGAAAAAAAGCAC |
| pECjd-F | CACTCCCGTTCTGGATAAT | Detect whether the pEC-cp40gRNA plasmid was successfully constructed | 471/593* |
| pECjd-R | TCACCGACAAACAACAGATAA |
| cp40UP-F | CAGGATTGATGGGAAGGGAGAAACCTTTACAGC | Amplification of upstream homologous arm incp40 | 622 |
| cp40UP-R | ACTACTGGTAGTGCCTGCCCCTTCAAT |
| cp40DOWN-F | GCAGGCACTACCAGTAGTTTTCCTTTC | Amplification of downstream homologous arm incp40 | 615 |
| cp40DOWN-R | CGCTTCCGTGCTGGTTGGGCCGGAAAATAAC |
| pEC-cp40-F | CGGCCCAACCAGCACGGAAGCGGAACACGTAGAAAG | Ring opening of the pEC-cp40gRNA plasmid | 7 076 |
| pEC-cp40-R | GTTTCTCCCTTCCCATCAATCCTGCCTATTTG |
| cp40-JD-F | AGAAACGTCACTAAGCTGCA | Screening forcp40 missing strains | 2 540/ 1 400# |
| cp40-JD-R | GGTCAAAGTTCAAGTCCAGG |
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