Article(id=1218551228720661091, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551215219196089, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2018-0259, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1522080000000, receivedDateStr=2018-03-27, revisedDate=1523635200000, revisedDateStr=2018-04-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1768454852513, onlineDateStr=2026-01-15, pubDate=1534003200000, pubDateStr=2018-08-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768454852513, onlineIssueDateStr=2026-01-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768454852513, creator=13701087609, updateTime=1768454852513, updator=13701087609, issue=Issue{id=1218551215219196089, tenantId=1146029695717560320, journalId=1189982191388893191, year='2018', volume='53', issue='8', pageStart='1195', pageEnd='1386', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768454849295, creator=13701087609, updateTime=1768457095505, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218560636561313952, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551215219196089, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218560636561313953, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551215219196089, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1364, endPage=1370, ext={EN=ArticleExt(id=1218551229282697881, articleId=1218551228720661091, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Preparation and
in vitro performance evaluation of doxorubicin loaded lipid calcium phosphate nanoparticles with shell-core structure, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=ORIGINAL ARTICLES, runingTitle=null, highlight=null, articleAbstract=
As an important drug carrier, liposome has the advantages of high biocompatibility and low immunogenicity. It has been widely used in the field of drug delivery, especially the targeted treatment of tumors. However, traditional liposomes are composed of flowing dynamic phospholipid membranes, which are easy to fuse together, resulting in aggregation and drug leakage. In addition, the lower degree of polyethylene glycol (PEG) modification also limits the targeted delivery performance of the vector in vivo. In view of the problems, a nanoparticle-targeted drug delivery system combining the inorganic carrier calcium phosphate with liposomes was designed, namely lipid calcium phosphate (LCP). Using doxorubicin (DOX) as a model drug, doxorubicin-loaded lipid calcium phosphate nanoparticles (DOX/LCP) were prepared by reverse microemulsion method, and the preparation conditions were investigated. The structure and morphology of calcium phosphate cores were observed by infrared spectroscopy, EDS spectroscopy, and transmission electron microscopy. The particle size, encapsulation efficiency, drug loading, stability and release behavior in vitro of DOX/LCP were investigated. Confocal microscopy and flow cytometry were used to qualitatively and quantitatively evaluate the uptake of DOX in drug-resistant tumor cell line MCF-7/DOX by LCP, respectively, and the thiazolium MTT colorimetric method was used to examine its cytotoxicity. LCP exhibited a typical core-shell structure with good size uniformity and dispersibility. The particle size was in (48.6 ±3.9) nm, the potential was in (-12.1 ±1.2) mV, and the encapsulation efficiency was above 80%. Moreover, it has a good stability in simulated plasma. In vitro release of LCP had a significant pH dependence. When the pH of the environment was 7.4, the cumulative release within 24 hours was less than 20%; as the pH of the release medium decreases, the release rate of DOX/LCP was accelerated gradually. Accumulated release over 24 hours exceeded 90% in the pH 4.5 medium. LCP significantly promoted the uptake and accumulation of DOX by drug-resistant cells, and the inhibition rate of drug-resistant tumors was significantly increased in vitro. The half maximal inhibitory concentrations (IC50) of LCP/DOX and free DOX were 4.6 and 11.8 μg·mL-1, respectively, and there was a significant difference between the two groups (P < 0.05). In summary, the LCP prepared in this study had a small particle size, high encapsulation efficiency and good stability. It had environmental responsiveness and potential inhibition of tumor drug resistance, which suggests a potential in the clinical application.
, correspAuthors=Kai SHI, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2018 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=Jian-xiu XUE, Hong-shu BI, Yu-ai LI, Yao CHEN, Xiao-qing LIU, Zheng-qi XU, Hu-wei PAN, Kai SHI), CN=ArticleExt(id=1218551231795086248, articleId=1218551228720661091, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=壳-核结构多柔比星脂质磷酸钙纳米粒的制备及体外性能评价, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
脂质体作为一种重要的药物载体,具有生物相容性高、免疫原性低等优点,已被广泛应用于药物传递领域,尤其是肿瘤的靶向治疗。然而传统脂质体由流动的动态磷脂膜构成,极易发生相互融合从而导致聚集和药物泄露。此外,较低的聚乙二醇(polyethylene glycol,PEG)修饰程度也限制了该载体在体内的靶向递药性能。鉴于传统脂质体存在的问题,本文设计了一种将无机载体磷酸钙与脂质体相结合的纳米粒靶向药物递送系统,即脂质磷酸钙(lipid coated calcium phosphate,LCP)。以多柔比星(doxorubicin,DOX)为模型药物,采用反相微乳液法制备载药脂质磷酸钙纳米粒(DOX/LCP),并对制备条件进行考察。采用红外光谱、能量色散光谱和透射电镜对磷酸钙内核进行结构表征和形态观察,并对DOX/LCP的粒径、包封率、载药量、稳定性及体外释放行为进行了考察。在此基础上,采用共聚焦显微镜和流式细胞仪分别对LCP介导DOX在耐药肿瘤细胞株MCF-7/DOX中的摄取进行了定性和定量评价,并采用噻唑蓝比色法考察了其细胞毒性作用。结果表明:制得的LCP具有典型的核-壳结构,且尺寸均一、分散性良好,粒径为(48.6±3.9)nm,zeta电位为(-12.1±1.2)mV,包封率>80%,在模拟血浆中具有良好的粒径稳定性。体外释放具有明显的pH依赖性,当环境pH为7.4时,24 h累计释放度低于20%;随着释放介质pH值的降低,DOX/LCP释放速度逐渐加快,在pH为4.5介质中,24 h累计释放量超过90%。LCP可以显著促进耐药细胞对DOX的摄取和蓄积,且体外对耐药肿瘤的抑制率显著提高,DOX/LCP组和游离DOX组的半数抑制浓度(half maximal inhibitory concentration,IC50)分别为4.6和11.8 μg·mL-1,两者相比具有显著性差异(P < 0.05)。综上,本研究制备的LCP粒径小、包封率高、稳定性好,具有环境响应性及潜在的逆转肿瘤耐药性能,有应用于临床研究的潜力。
, correspAuthors=石凯, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《药学学报》编辑部2018, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=KTyMY1SW7trxF+u6nZDnYg==, magXml=ivbzz2L1PufbxU2/xK7Oqw==, pdfUrl=null, pdf=9gSRhvpaBQ+GpVIDSh3LYg==, pdfFileSize=490978, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=MqbRmqxRE5KWiPvZ5IirzQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=2Cplljsu0oJPY7w77Hgr0g==, mapNumber=null, authorCompany=null, fund=null, authors=
, authorsList=薛建秀, 毕洪书, 李雨爱, 陈瑶, 刘晓庆, 徐正奇, 潘虎威, 石凯)}, authors=[Author(id=1218970822501388838, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218551228720661091, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1218970822618829363, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218551228720661091, authorId=1218970822501388838, language=EN, stringName=Jian-xiu XUE, firstName=Jian-xiu, middleName=null, lastName=XUE, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Pseudo-ternary phase diagram of Triton X-100-hexanol/cyclohexane/water microemulsion system with Km value of 1: 1 (A), 2: 1 (B) and 3: 1 (C)
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Schematic illustration of the synthesis of doxorubicin-loaded lipid calcium phosphate nanoparticles (DOX/LCP). DOPA: 1, 2-Dioleoyl-sn-glycero-3-phosphatidic acid; DOPC: 1, 2-Dioleoyl-sn-glycero-3-phosphocholine; PEG2K: Polyethylene glycol-2000; FA: Folic acid
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Typical TEM morphology of calcium phosphate cores (A) and LCP (B)
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Physicochemical characterization of calcium phosphate cores. A: FT-IR spectra of CaP cores; B: EDS spectrum of synthesized CaP cores
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Particle size-stability of LCP in 10% fetal bovine serum (FBS) and Tris buffer
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In vitro release profiles of DOX from LCP in medium with different pH values. n = 3, $\overline{x}±s$
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Cellular uptake of DOX/LCP. A: Intracellular localization of free DOX and DOX/LCP by confocal microscopy. Scale bar indicates 10 μm. B: Quantifying intracellular uptake of DOX and DOX/LCP by flow cytometry analysis. Untreated cells were used as control. C: The quantified mean fluorescence intensity of DOX positive cells by flow cytometry analysis. n = 3, $\overline{x}±s$. *P < 0.05, **P < 0.01 vs control group
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Cytotoxicity of LCP (A) and DOX/LCP (B) in MCF-7/DOX cells. n = 6, $\overline{x}±s$. *P < 0.05, **P < 0.01 vs control group
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| Ca/P ratio | Size/nm | PDI | DL/% | EE/% |
| 20 | 210.5 ± 14.8 | 0.67 ± 0.12 | 2.5 | 92.1 |
| 50 | 115.7 ± 10.3 | 0.48 ± 0.09 | 3.1 | 89.4 |
| 100 | 62.5 ± 5.4 | 0.23 ± 0.04 | 3.4 | 87.5 |
| 200 | 48.6 ± 3.9 | 0.16 ± 0.03 | 3.5 | 82.6 |
| 300 | 45.2 ± 1.4 | 0.18 ± 0.02 | 3.5 | 75.2 |
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The effect of Ca/P ratios on preparation of DOX/LCP. n = 3, $\overline{x}±s$. PDI: Polydispersity index; DL: Drug loading; EE: Entrapment efficiency
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| Ca/P ratio | Size/nm | PDI | DL/% | EE/% |
| 20 | 210.5 ± 14.8 | 0.67 ± 0.12 | 2.5 | 92.1 |
| 50 | 115.7 ± 10.3 | 0.48 ± 0.09 | 3.1 | 89.4 |
| 100 | 62.5 ± 5.4 | 0.23 ± 0.04 | 3.4 | 87.5 |
| 200 | 48.6 ± 3.9 | 0.16 ± 0.03 | 3.5 | 82.6 |
| 300 | 45.2 ± 1.4 | 0.18 ± 0.02 | 3.5 | 75.2 |
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