Advances in the Intervention of Prunella Spica Capsules on Postoperative Recurrence of Nodular Goiter

As important drugs for the treatment of nodular goiter(NG),Prunella Spica preparations are widely used clinically,and have a significant effect on NG.Various active ingredients in the preparations intervene in the formation of NG by inhibiting the proliferation of thyroid follicular cells,promoting cell apoptosis,regulating immunity,improving the microcirculation of thyroid tissue and other mechanisms,and can reduce the postoperative recurrence of NG.

夏枯草(Prunella vulgaris)组织培养和快速繁殖

以夏枯草的叶片、茎节、顶芽为外植体在含不同浓度的6-BA和NAA的MS培养基中培养,比较其增值率和分化率。发现以茎节为外植体,诱导不定芽的最佳培养基为MS+3.0mg/L6-BA+0.1mg/L NAA,分化率为100%,增殖倍数为6.8。以顶芽为外植体,不定芽的最佳培养基为MS+3.0mg/L6-BA+0.05mg/LNAA或MS+3.0mg/L6-BA+0.1mg/LNAA,分化率分别为88.2%和84.6%,增殖倍数分别为5.8和6.2。最佳生根培养基为1/4MS+NAA0.5mg/L,生根率为100%。将生根的组培苗经过驯化移栽后,成活率为93%。表明,叶片难以分化;茎节的分化率效果最好;顶芽的分化能力介于二者之间。

Orally administered extract from Prunella vulgaris attenuates spontaneous colitis in mdr1a^(-/-) mice

AIM: To investigate the ability of a Prunella vulgaris(P. vulgaris) ethanolic extract to attenuate spontaneous typhlocolitis in mdr1a-/- mice. METHODS: Vehicle(5% ethanol) or P. vulgaris ethanolic extract(2.4 mg/d) were administered daily by oral gavage to mdr1a-/- or wild type FVBWT mice from 6 wk of age up to 20 wk of age. Clinical signs of disease were noted by monitoring weight loss. Mice experiencingweight loss in excess of 15% were removed from the study. At the time mice were removed from the study, blood and colon tissue were collected for analyses that included histological evaluation of lesions, inflammatory cytokine levels, and myeloperoxidase activity. RESULTS: Administration of P. vulgaris extracts to mdr1a-/- mice delayed onset of colitis and reduced severity of mucosal inflammation when compared to vehicle-treated mdr1a-/- mice. Oral administration of the P. vulgaris extract resulted in reduced(P < 0.05) serum levels of IL-10(4.6 ± 2 vs 19.4 ± 4), CXCL9(1319.0 ± 277 vs 3901.0 ± 858), and TNFα(9.9 ± 3 vs 14.8 ± 1) as well as reduced gene expression by more than two-fold for Ccl2, Ccl20, Cxcl1, Cxcl9, IL-1 α, Mmp10, VCAM-1, ICAM, IL-2, and TNFα in the colonic mucosa of mdr1a-/- mice compared to vehicle-treated mdr1a-/-mice. Histologically, several microscopic parameters were reduced(P < 0.05) in P. vulgaris-treated mdr1a-/-mice, as was myeloperoxidase activity in the colon(2.49 ± 0.16 vs 3.36 ± 0.06, P < 0.05). The numbers of CD4+ T cells(2031.9 ± 412.1 vs 5054.5 ± 809.5) and germinal center B cells(2749.6 ± 473.7 vs 4934.0 ± 645.9) observed in the cecal tonsils of P. vulgaris-treated mdr1a-/- were significantly reduced(P < 0.05) from vehicle-treated mdr1a-/- mice. Vehicle-treated mdr1a-/- mice were found to produce serum antibodies to antigens derived from members of the intestinal microbiota, indicative of severe colitis and a loss of adaptive tolerance to the members of the microbiota. These serum antibodies were greatly reduced or absent in P. vulgaris-treated mdr1a-/- mice. CONCLUSION: The anti-inflammatory activity of P. vulgaris ethanolic extract effectively attenuated the severity of intestinal inflammation in mdr1a-/- mice.

Prunella vulgaris L. extract improves cellular immunity in MDR-TB challenged rats

Objective： To study the effect of the extract of Prunella vulgaris L. on multiple drugs resistant bacillus tuberculosis （MDR-TB）. Methods： Experimental animal model in rats was induced by MDR-TB. Normal group model group and Prunella vulgaris L. group were set up. The contents of IFN-7, IL-4, IL-10 and IL-12 were examined by ELISA. Their genome mRNAs were extracted, the target genes were amplified by PCR. RT-PCR was used to detect the mRNA levels of them. Results： The content of IFN-q, of the extract of Prunella vulgaris L. group was 1.98±0.67 pg/ml, IL-4 was 6.47±1.46 pg/ml, IL-10 was 12.13±3.43 pg/ml and IL-12 was 3.02±0.86 pg/ml. Compared with the model group, Prunella vulgaris L. group was notable difference in serum IFN-γ, IL-12 and IL-10 （P〈0.05）. The mRNA levels of IFN-γ, IL-12 increased and IL-10 decreased obviously, the differences were quite significant （P〈0.05）, but IL-4 had no obvious change. Conclusion： The extract of Prunella vulgaris L. can enhance the cellar immunological function in rats from up-regulation of the level of genetic transcription, accordingly provide the theory basis of healing of tuberculosis with it.

襄阳夏枯草(Prunella vulgaris)群落基本特征

报道了湖北省襄阳市一野生夏枯草种群。种群面积为8～10 m2,植株数为30～40株,为小种群。频度为100%,盖度为10%,密度约4株/m2。果穗平均数为5.6个/株。过度耕作和采摘是导致夏枯草中药材资源减少的重要原因。

Optimization of Extraction Process of Prunellae Spica Compound by Orthogonal Test

[Objectives] The study aimed to optimize the extraction process of Prunellae Spica compound to provide an experimental basis for the development and utilization of the compound. [Methods]Through orthogonal test,the optimal extraction process of Prunellae Spica compound was chosen by using the yield of dry paste and ursolic acid content as evaluation indicators. [Results]The optimal extraction process of Prunellae Spica compound is as follows: solvent dosage was 16 times,and extraction frequency was 3 times,while extraction time was 1 h.[Conclusions]The extraction process of Prunellae Spica compound was stable and feasible,and this study can provide a theoretical basis for further preparation of the compound.

The effects and mechanism of action of Prunella vulgaris L extract on Jurkat human T lymphoma cell proliferation

Objective:The aim of this study was to observe the effect of the Prunella vulgaris L extract on the Jurkat human T lymphoma cell line.Methods:Jurkat cells were cultivated with different concentrations of the extract from Prunella vulgaris L.The MTT assay and flow cytometry were employed to determine the cells' proliferation inhibition ratio and the apoptosis rates,respectively.Agarose gel electrophoresis was used to observe cellular DNA fragmentation,and western blotting was used to observe changes in Bcl-2 and Bax protein expression.Results:The Prunella vulgaris L extract remarkably inhibited the proliferation of Jurkat cells.This inhibition exhibited dose dependence,with an IC50 of 20.23 ± 0.31 μg/mL.Agarose gel electrophoresis showed that the apoptosis strap became wider and brighter,and flow cytometry showed that the apoptosis rate increased in a concentration-dependent manner.Western blotting showed that Bcl-2 protein was down-regulated and Bax protein was up-regulated during apoptosis.Conclusion:The extract from Prunella vulgaris L induced apoptosis of Jurkat cells by down-regulating Bcl-2 protein and up-regulating Bax protein.These actions inhibited the growth of Jurkat cells.

A Metabolomics Study of the Volatile Oil from Prunella vulgaris L.on Pelvic Inflammatory Disease

Objective Pelvic inflammatory disease(PID)is one of the most common gynaecological diseases.Here,this thesis aims to investigate the therapeutic effects of Prunella vulgaris L.oil on the PID by using metabolomics based on gas chromatographymass spectrometry(GC-MS)to address this challenge.Methods First,measurements of pro-inflammatory cytokines and histological analysis of the uterus were conducted to validate the successful generation of a PID rat model.Furthermore,the volatile oil from Prunella vulgaris L.was administered to treat PID rats.Serum samples were collected before and after treatment and analyzed by GC-MS to generate metabolite profiles for each sample.The information generated from the qualitative and quantitative analysis of these metabolites was applied to distinguish between the PID model and normal control groups.Results Some metabolites,such as acetic acid,succinic acid,glyceric acid,(R*,S*)-3,4-dihydroxybutanoic acid,3-hydroxyphenylacetic acid,D-ribose and myo-inositol showed a higher contribution in the classification model;thus,they can be considered as potential biomarkers.Furthermore,the therapeutic effect of the volatile oil extracted from Prunella vulgaris L.could also be visualized using GC-MS-based metabolomics.Conclusions The results show that metabolomics studies are invaluable for disease diagnosis and therapeutic effect estimation.

Establishment of Specific Chromatogram of Spica Prunellae Formula Granules Based on Standard Decoction

[Objectives]This study aimed to establish HPLC chromatograms of decoction pieces,standard decoction and formula granules of Spica Prunellae.[Methods]The chromatographic conditions were as follows:column,SHISEIDO CAPCELL PAK C18 MGII column(4.6 mm×250 mm,5μm);mobile phase,acetonitrile-0.1%phosphoric acid;gradient elution;detection wavelength,280 nm;flow rate,1.0 mL/min;and column temperature,30℃.The correlation between the decoction pieces,standard decoction and formula granules of Spica Prunellae was analyzed by specific chromatograms.[Results]The fingerprint chromatograms of decoction pieces,standard decoction and formula granules of Spica Prunellae showed five common peaks,with good correlation.Among the five common peaks,four of them were tanshinol,protocatechuic acid,caffeic acid and rosmarinic acid.[Conclusions]The main chemical constituents of decoction pieces,standard decoction and formula granules of Spica Prunellae are basically the same.The HPLC specific chromatogram established can be used for the quality control of Spica Prunellae formula granules.

The Effect of <i>Prunella</i>on Anti-Inflammatory Activity in RAW264.7 Mouse Macrophage Cells

The extracts of Prunella vulgaris L. (Labiatae), a popular Western and Chinese herbal medicine, was shown to have anti-inflammatory properties, which might be due to partially, their rosmarinic acid content. Inhition of prostaglandine E2 (PGE2) production in lipopolysaccharide (LPS) stimulated RAW264.7 mouse macrophage cells was assessed with an enzyme immunoassay (EIA) following 8-hour treatments with Prunella vulgaris extracts or fractions. Results showed that 95% ethanol extracts from P. vulgaris significantly inhibited PGE2 production. In further studies, fraction 2 from the 95% ethanol extract of P. vulgaris significantly reduced PGE2 production at 66 μg/ml (72% reduction). Cytotoxic-ity did not play a role in the noted reduction of PGE2 seen in either the extracts or fractions from P. vulgaris. High performance liquid chromatography analysis showed that there was 1.4 mM rosmarinic acid in 95% ethanol Prunella extract (201 mg/ml crude extract). Our results suggest that rosmarinic acid may contribute toward the anti-inflammatory activity of Prunella in a dose-response manner. Prunella might have a potential to be used as a functional food for anti-inflammatory activity.

The mechanism of Astragalus-Prunella vulgaris in the treatment of diabetic cardiomyopathy based on network pharmacology and molecular docking

Objective:To study the main chemical components and mechanism of Astragalus and Prunella vulgaris in the treatment of diabetes cardiomyopathy(DCM)based on network pharmacology and in vitro experiments.Methods:The main active components and prediction targets of Astragalus membranaceus and Prunella vulgaris herbal pairs were obtained by TCM Pharmacology database and analysis platform(TCMSP),and the disease genes were retrieved by genecards,OMIM,PharmGKB and drugbank databases.The disease and drug prediction targets were intersected to screen out common potential therapeutic targets.Cytoscape3.7.2 software was used to construct"drug component disease target"interaction network diagram;The PPI network of protein-protein interaction was constructed by using string database.R software was used to analyze the function enrichment of GO and KEGG for drug disease common targets,and autodock Vina 1.1.2 for molecular docking.Finally,the specific mechanism of Astragalus and Prunella vulgaris medicated serum on high glucose stimulated cardiomyocytes was verified in vitro.H9c2 cardiomyocytes were divided into five groups:normal group:low glucose(5.5 mmol/L)culture group,model group:high glucose(33 mmol/L)culture group,5%serum group:high glucose+5%Astragalus membranaceus Prunella vulgaris herb serum culture group,10%serum group:high glucose+10%Astragalus membranaceus Prunella vulgaris herb serum culture group,15%serum group:Hg high glucose+15%Astragalus membranaceus Prunella vulgaris herb serum culture group.MTT assay was used to detect the cell survival rate,and Western blot was used to detect the effect of Astragalus and Prunella vulgaris medicated serum on the expression of AKT1,p-AKT1,MAPK14 and p-MAPK14 proteins.Results:In this study,31 active components of Astragalus and Prunella vulgaris were screened,involving 157 targets of diabetes cardiomyopathy and 178 related signal pathways.The results of network analysis showed that Astragalus and Prunella vulgaris herbs may play a role in the treatment of DCM by acting on key targets such as AKT1,FOS,MAPK1,MAPK8,MAPK14,Jun and key pathways such as PI3K-AKT.Molecular docking showed that Astragalus membranaceus and Prunella vulgaris medicine had good binding between the active components luteolin,quercetin,pistil isoflavone,kaempferol and key targets such as AKT1,MAPK14,MAPK1,FOS,mapk8 and Jun,and the Vina score of luteolin and AKT1 was the lowest.The results in vitro showed that Astragalus and Prunella vulgaris medicated serum significantly improved the inhibition of H9c2 cardiomyocyte proliferation induced by high glucose,and increased the phosphorylation levels of AKT1 and MAPK14 proteins to play a role in the treatment of DCM.Conclusion:Astragalus and Prunella vulgaris have the characteristics of multi-target and multi-channel in the treatment of DCM.Its mechanism may be related to the regulation of the protein expression of p-AKT1 and p-MAPK14.These findings provide a new idea and basis for further experimental study on the mechanism of Astragalus and Prunella vulgaris in the treatment of diabetes cardiomyopathy.

Mechanism of Prunella vulgaris in treating Graves' disease based on network pharmacology

Objective:To use the network pharmacology method to screen the effective components and targets of Prunella vulgaris to treat Graves disease,and to explore the relationship between its components and targets and diseases.Methods:Collect and screen active components and targets of Prunella vulgaris through TCMSP;use GeneCards and DisGeNET databases to screen disease-related genes of Graves disease,construct a"drug-component-disease-target"network and screen The core target of Prunella vulgaris to treat Graves disease.Then further protein interaction network analysis(PPI),GO biological function annotation,KEGG pathway analysis and molecular docking verification.Results:The ten active components of Prunella vulgaris can control 57 Graves'disease targets such as PPARG,PIK3CG,CASP9,AKT1,TNF,ICAM1,BCL2,BAX,etc.,affecting the inflammatory response,negative regulation of apoptosis and other related organisms.Academic process and TNF signaling pathway,HIF-1 signaling pathway,PI3K-Akt signaling pathway and cancer-related pathways and other related signaling pathways,thus playing a role in the treatment of Graves disease.Conclusion:This study initially verified the target and mode of action of Prunella vulgaris for Graves disease,which can lay the foundation for further revealing its clinical mechanism of action.

Review of the Studies on the Anti-Tumoral Effect of <i>Prunella vulgaris</i>

Prunella vulgaris (PV) is a herb which grows widely around the world. It is used in traditional medicine in different continents worldwide. This article reviewed the research studies in the last three decades about the use of this herb in the treatment of cancer. Specifically, this study concentrates on the scientific in-vitro methods used, as the in-vitro methods were the most preferred methods used in the past. Cell viability/apoptosis, migration, anti-oxidative activities, and the underlying molecular mechanisms were the features which most of the research focused. The aim of this article was to summarize on what molecular mechanisms, which these previous research found responsible for the anti-tumoral effect of PV. The assays to investigate the aforementioned items were organized and displayed, including the proteomic methods which study the underlying molecular mechanisms. By categorizing and organizing these methods, the directions and emphases taken by the research efforts were revealed.

The Characterization of Steam Distillation as an Extraction Method to Extract Volatile Compounds from <i>Prunella vulgaris</i>and the Investigation of Their Anti-Tumorous Effect

Prunella vulgaris (PV) is a perennial plant which is widely grown around the world. It has been widely used as a medicinal treatment for generations. Previous studies showed extracts from this plant had a wide range of therapeutic efficacy, including anti-tumorous effect. However, the volatile organic compounds (VOCs) extracted from it were rarely explored. This paper reports on the characterization of a steam distillation process to extract VOCs in PV and also the anti-tumorous effects of the PV distillate using the tetrazolium-based Cell Counting Kit-8 (CCK-8) as the test agent, when the VOCs were used to treat oral squamous cancer cells, SSC154. It was found that most abundant VOCs came out steadily and continuously for as long as the duration of the steam extraction could extend. However, some compounds such as benzaldehyde did show depletion as the distillation process progressed, while some compounds such as caryophyllene oxide was only sparsely found at the beginning of distillation. The PV distillate was mildly effective in its cytotoxicity to cancer cells SCC154, in a dosage dependent manner.

Integrating qualitative and quantitative characterization of Prunellae Spica by HPLC-QTOF/MS and HPLC-ELSD

The present study was designed to analyze the major constituents in Prunellae Spica and establish a method for simultaneous determination of two constituents contained in Prunellae Spica. High performance liquid chromatography coupled with time-of-flight mass spectrometry(HPLC-QTOF-MS/MS) technique was used to identify the constituents in the extractive of Prunellae Spica. High performance liquid chromatography coupled with evaporative light scattering detection(HPLC-ELSD) was used to simultaneously quantify two kinds of constituents contained in Prunellae Spica. Principal component analysis(PCA) was applied to compare the similarity and difference among samples from different regions of China. In the present study, 22 compounds were identified and some new fragmental pathways of triterpenic acids were discovered. An accurate and reliable HPLC-ELSD method was developed and validated for the first time to simultaneously quantify multiple constituents, including rosmarinic acid, maslinic acid, corosolic acid, betulin, oleanolic acid, and ursolic acid in the extract of Prunellae Spica.(PCA) revealed some similarities and differences among different samples from different regions of China. In conclusion, our results from this study would be helpful in establishing a scientific and rational quality control method for Prunellae Spica.

夏枯草不同部位化学成分、药理作用研究进展及质量标志物的预测分析

夏枯草Prunella valgaris.是传统的清热泻火类中药,具有清肝泻火、明目、散结消肿的功效。夏枯草中含有多种化学成分,主要为萜类、酚酸、黄酮、有机酸类、挥发油类等。夏枯草药用部位古今存在差异,传统多以茎叶入药,2020版《中华人民共和国药典》规定夏枯草果穗为药用部位。研究表明,夏枯草茎叶和果穗在化学组分上无差异,仅含量上有差异,黄酮和多糖类成分在叶中含量最高,异迷迭香酸苷是果穗的特征性成分,夏枯草种子含有较多的挥发油,β-香树酯醇是其特有成分。现代药理学研究表明,夏枯草在临床上常用于治疗甲状腺癌、乳腺癌、肝癌、肺癌、子宫癌等癌症。除此之外,夏枯草还具有抗炎、降血压、降血脂、降血糖、抗菌、抗病毒、抗氧化、镇静催眠的作用。通过对夏枯草本草考证、不同部位化学成分的差异、药理作用的总结,根据质量标志物的定义,从植物亲缘学及化学成分特有性证据、传统功效、传统药效、化学成分可测性、复方配伍环境等几个方面对夏枯草的质量标志物进行分析,可推断芦丁、槲皮素、迷迭香酸、异迷迭香酸苷、亚油酸、角鲨烯、β-香树醇、木犀草素、山柰酚、谷甾醇、咖啡酸等为夏枯草中的质量标志物。

夏枯草制剂治疗Graves病的有效性与安全性的系统评价

目的系统评价口服夏枯草制剂联合西医治疗Graves病的疗效及安全性,以期为Graves病的临床诊治提供循证医学证据。方法文章全面系统检索中文学术期刊全文数据库(CNKI)、中国生物医学文献数据库(CBM)、万方数据库(WanfangData)、维普中文期刊全文数据库(VIP)四大中文数据库和PubMed、Embase、CochraneLibrary三大英文数据库,检索时间均从建库至2022年08月。采用Cochrane系统偏倚风险评估工具对纳入研究进行质量评估,并用RevMan 5.4.1软件对结局指标进行Meta分析。结果最终纳入8项随机对照试验,共784例患者。试验组均为口服夏枯草制剂联合西医治疗,对照组均为西医治疗。Meta分析结果表明,口服夏枯草制剂联合西医治疗在甲状腺功能及自身抗体的改善、缩小甲状腺腺体等方面的临床治疗总有效率高于对照组(RR=1.13,95%CI[1.10,1.26],P<0.00001),并且能够显著改善甲状腺肿的临床症状(MD=-0.39,95%CI[-0.67,-0.11],P=0.006),降低血清FT3水平(MD=-1.76,95%CI[-3.10,-0.43],P=0.01)及血清FT4水平(MD=-3.89,95%CI[-6.79,-1.00],P=0.008),提高血清促甲状腺激素(TSH)水平(MD=0.45,95%CI[0.05,0.86],P=0.03),改善甲状腺肿大情况(MD=-0.39,95%CI[-0.67,-0.11],P=0.006),缩小甲状腺左叶前后径(MD=-0.31,95%CI[-0.57,-0.06],P=0.02)、左叶左右径(MD=-0.24,95%CI[-0.32,-0.16],P<0.00001)、右叶前后径(MD=-0.30,95%CI[-0.47,-0.13],P=0.0004)、右叶左右径(MD=-0.21,95%CI[-0.33,-0.10],P=0.0004)。结论夏枯草制剂联合西医治疗对比单用西医治疗Graves病在整体疗效、改善甲状腺肿的临床症状、甲状腺激素水平,缩小甲状腺腺体有明显的优势,且较安全,但仍需后续大样本、高质量文献的支持。

2002-2023年夏枯草研究文献可视化分析

目的了解中药夏枯草的研究现状及发展趋势,为后续研究提供参考。方法检索中国知识资源总库(CNKI)、中文科技期刊数据库(VIP)、中国学术期刊数据库(万方数据)、中国生物医学文献数据库(CBM)2002年1月1日-2023年3月23日收录的夏枯草相关研究文献,利用NoteExpress3.7.0.9258软件合并去重后,通过CiteSpace6.2.R1软件对作者、机构及关键词进行可视化分析。结果纳入3136篇文献,年发文量呈波动上升趋势,《陕西中医》发文最多(93篇),核心作者有林丽美(34篇)、郭巧生(27篇)、张明智(20篇)等,核心研究机构有山东中医药大学(37篇)、天津中医药大学(30篇)、南京中医药大学(28篇)等,作者及机构间合作较少。关键词分析显示,治疗病症研究以“高血压”“乳腺癌”“乳腺增生”“眩晕”“失眠”为主,化学成分研究以“迷迭香酸”“熊果酸”为主,文献类型以“名医经验”“临床观察”为主。结论夏枯草研究领域处于发展上升阶段,研究内容主要集中在临床应用、化学成分研究等方面,通过数据挖掘及分子对接等技术总结用药规律、探索其作用机制和作用靶点是研究趋势。

整合网络药理学和体外实验探究夏枯草-半枝莲药对治疗乳腺癌的作用及机制

目的采用网络药理学和体外细胞实验探究夏枯草-半枝莲药对抗乳腺癌的作用机制。方法运用中药系统药理学数据库与分析平台筛选出夏枯草-半枝莲药对的有效成分和靶点;利用GeneCards、OMIM数据库找到乳腺癌靶点,进而构建药物-活性成分-关键靶点网络和蛋白-蛋白相互作用(PPI)网络;运用R语言进行GO功能和KEGG通路富集分析以及生存分析;将筛选出的活性成分和核心靶点进行分子对接验证;采用CCK-8法检测细胞活力;EdU、流式实验检测细胞增殖和凋亡情况;Western blot法检测p-AKT1、AKT1、β-catenin和c-MYC的蛋白表达水平。结果通过数据分析共筛选出有效成分36个,交集靶点105个,其核心成分是槲皮素、木犀草素、山奈酚、汉黄芩素、黄芩素;通过PPI和生存分析得出其关键靶点是AKT1、ESR1、CASP3、MYC;GO分析共包含4303条富集结果,KEGG分析共包含232条通路;分子对接显示核心成分与关键靶点均具有较强的结合能力。细胞实验证明,核心活性成分槲皮素可以抑制乳腺癌细胞的增殖并促进其凋亡(P<0.05),下调p-AKT1、β-catenin和c-MYC蛋白的表达水平(P<0.05)。结论夏枯草-半枝莲药对中活性成分槲皮素可能通过AKT1/β-catenin信号通路来发挥作用,为其治疗乳腺癌的作用机制研究提供了科学参考。

基于Notch信号通路探讨夏枯草抑制大肠癌细胞增殖及干性的机制

目的以肿瘤干细胞为切入点,基于Notch信号通路探究夏枯草对大肠癌细胞增殖及干性的调控机制。方法体外培养大肠癌SW480细胞,待细胞处于对数生长期后,随机分成对照组和0.1 mg/mL组、0.2 mg/mL组、0.4 mg/mL组。对照组不进行药物干预;剩余3组分别添加0.1 mg/mL、0.2 mg/mL、0.4 mg/mL的夏枯草药液,并将各组所含DMSO补足至等量,干预24 h后进行后续实验。采用倒置显微镜观察大肠癌SW480细胞生长形态及密度,0.4%台盼蓝染色法检测活细胞数并计算细胞存活率;CCK8法检测大肠癌SW480细胞的增殖抑制率;流式细胞术检测大肠癌SW480细胞群中干细胞比例;克隆球形成实验检测大肠癌SW480细胞的自我更新能力;Western blot法检测大肠癌SW480细胞内增殖调控蛋白c-Myc,肿瘤干细胞特征标记物CD44、CD133、SOX2以及Notch信号通路相关蛋白Notch1、Hes1蛋白相对表达量。结果与对照组比较,0.1 mg/mL组、0.2 mg/mL组、0.4 mg/mL组大肠癌SW480细胞生长和细胞存活率随着加药浓度增加而受到明显抑制(P<0.05);大肠癌SW480细胞增殖能力随着加药浓度增加而明显下降(P<0.05);大肠癌SW480细胞群中肿瘤干细胞比例随着加药浓度增加而明显下降(P<0.05);大肠癌SW480细胞自我更新能力随着加药浓度增加而明显抑制(P<0.05)。Western blot结果显示,与对照组相比,0.1 mg/mL组、0.2 mg/mL组、0.4 mg/mL组大肠癌SW480细胞增殖调控蛋白c-Myc,肿瘤干细胞特征性标记物CD44、CD133、SOX2蛋白及通路相关蛋白Notch1、Hes1的相对表达量随着加药浓度增加而明显下调(P<0.05)。结论夏枯草可以抑制大肠癌细胞的增殖及干性,抑制Notch通路的活化可能是其发挥作用的重要机制。