Long-term artificial sweetener intake is linked to increased risk of obesity. In the present study, supplement of natural sweetener from Siraitia grosvenorii(SG)(or Momordica grosvenorii) fruit, compared with the arti...Long-term artificial sweetener intake is linked to increased risk of obesity. In the present study, supplement of natural sweetener from Siraitia grosvenorii(SG)(or Momordica grosvenorii) fruit, compared with the artificial sweetener aspartame(ASM), was evaluated for anti-obesity effects on mice fed with high fat diet(HFD). We found that, in contrary to ASM, SG extracts prevented body weight gain, the insulin resistance and fat mass accumulation in HFD mice. SG extracts treatment inhibited the infiltration of inflammatory macrophages and lowered the levels of the fat inflammatory cytokines(leptin, macrophage chemoattractant protein 1(MCP-1) and tumor necrosis factor-α(TNF-α)) in adipose tissues. In addition, SG extracts supplement counteracted the remodeling of gut microbiota resulted from HFD. However, ASM supplement aggravated the HFD-induced obese performances, fat inflammation and dysregulation of gut microbiota. Taken together, our results indicate that supplement of SG extracts may represent a promising alternation of artificial sweeteners in preventing metabolic diseases.展开更多
[Objectives]The purpose of this study was to provide reference for scientific introduction and rational production planning of Siraitia grosvenorii.[Methods]Using the Geographic Information System for Global Medicinal...[Objectives]The purpose of this study was to provide reference for scientific introduction and rational production planning of Siraitia grosvenorii.[Methods]Using the Geographic Information System for Global Medicinal Plants(GMPGIS),the ecological factors and suitable producing areas of S.grosvenorii were analyzed.The maximum information entropy model MaxEnt and the GMPGIS analysis method were compared.Verification analysis was performed with cosine similarity and Kappa method.[Results]S.grosvenorii is mainly produced in China.Brazil and Congo(Democratic Republic)are the two countries with the largest potential distribution.Indonesia,Colombia,Peru,the United States,Bolivia,Thailand and Myanmar have great development potential in the introduction and cultivation of S.grosvenorii.In China,S.grosvenorii mainly grows in the coastal provinces dominated by Guangxi,with a tendency of gradually expanding to the north,where the temperature has been rising slowly compared with the original producing area of Guilin.Guangxi is the main producing area.Guangdong,Jiangxi and Hunan are regions with potential wide distribution.Fujian,Yunnan,Sichuan,Guizhou,Zhejiang,Chongqing,Hainan,Hubei and Taiwan,China also have small distributions.Among the 210 largest ecologically similar areas,the average cosine similarity was above 99.9%.[Conclusions]The potential distribution areas predicted by the GMPGIS analysis method have high prediction accuracy.This will provide effective scientific reference for the introduction and standardized cultivation of medicinal plants.展开更多
In order to provide molecular biological basis for breeding of excellent seedless varieties of Siraitia grosvenorii,the genetic background of 28 female triploid and male diploid individuals of S. grosvenorii was analy...In order to provide molecular biological basis for breeding of excellent seedless varieties of Siraitia grosvenorii,the genetic background of 28 female triploid and male diploid individuals of S. grosvenorii was analyzed by using RAPD molecular markers. The results showed that female triploid and male diploid individuals of S. grosvenorii had abundant genetic background,with great genetic similarity coefficients and close genetic distance. Overall,the genetic background of female triploid and male diploid individuals of S. grosvenorii exhibited relatively low complexity. Therefore,it is necessary to take corresponding measures for germplasm innovation to enrich the genetic background of seedless parents of S. grosvenorii.展开更多
Mogrosides and steroid saponins are tetracyclic triterpenoids found in Siraitia grosvenorii.Squalene synthase(SQS) and cycloartenol synthase(CAS) are key enzymes in triterpenoid and steroid biosynthesis.In this study,...Mogrosides and steroid saponins are tetracyclic triterpenoids found in Siraitia grosvenorii.Squalene synthase(SQS) and cycloartenol synthase(CAS) are key enzymes in triterpenoid and steroid biosynthesis.In this study,full-length cDNAs of SgSQS and SgCAS were cloned by a rapid amplification of cDNA-ends with polymerase chain reaction(RACE-PCR) approach.The SgSQS cDNA has a 1254 bp open reading frame(ORF) encoding 417 amino acids,and the SgCAS cDNA contains a 2298 bp ORF encoding 765 amino acids.Bioinformatic analysis showed that the deduced SgSQS protein has two transmembrane regions in the C-terminal.Both SgSQS and SgCAS have significantly higher levels in fruits than in other tissues,suggesting that steroids and mogrosides are competitors for the same precursors in fruits.Combined in silico prediction and subcellular localization,experiments in tobacco indicated that SgSQS was probably in the cytoplasm or on the cytoskeleton,and SgCAS was likely located in the nucleus or cytosol.These results will provide a foundation for further study of SgSQS and SgCAS gene functions in S.grosvenorii,and may facilitate improvements in mogroside content in fruit by regulating gene expression.展开更多
CYP450 plays an essential role in the development and growth of the fruits of Siraitia grosvenorii. However, little is known about the SgCYP450-4 gene in S. grosvenorii. Here, based on transcriptome data, a full-lengt...CYP450 plays an essential role in the development and growth of the fruits of Siraitia grosvenorii. However, little is known about the SgCYP450-4 gene in S. grosvenorii. Here, based on transcriptome data, a full-length c DNA sequence of SgCYP450-4 was cloned by reverse transcriptasepolymerase chain reaction(RT-PCR) and rapid-amplification of c DNA ends(RACE) strategies. SgCYP450-4 is 1677 bp in length(Gen Bank accession No. AEM42985.1) and contains a complete open reading frame(ORF) of 1422 bp. The deduced protein was composed of 473 amino acids, the molecular weight is 54.01 kDa, the theoretical isoelectric point(PI) is 8.8, and the protein was predicted to possess cytochrome P450 domains. SgCYP450-4 gene was highly expressed in root, diploid fruit and fruit treated with hormone and pollination. At 10 days after treatment with pollination and hormones, the expression of SgCYP450-4had the highest level and then decreased over time, which was consistent with the development of fruits of S.Grosvenorii. Hormonal treatment could significantly induce the expression of SgCYP450-4. These results provide a reference for regulation of fruit development and the use of parthenocarpy to generate seedless fruit, and provide a scientific basis for the production of growth regulator application agents.展开更多
该研究设计以罗汉果为核心的具有清咽润喉和润肠通便双功能的保健食品配方,并对其进行综合评价。通过收集整理含罗汉果的保健食品批文、专利和中成药信息建立数据库,使用关联规则算法(Apriori)、层次分析法(analytic hierarchy process,...该研究设计以罗汉果为核心的具有清咽润喉和润肠通便双功能的保健食品配方,并对其进行综合评价。通过收集整理含罗汉果的保健食品批文、专利和中成药信息建立数据库,使用关联规则算法(Apriori)、层次分析法(analytic hierarchy process,AHP)、熵权法、逼近理想解排序法(technique for order preference by similarity to solution,TOPSIS)等机器学习算法挖掘其中原料药味配方规律。围绕药味类别、归经和现有处方类型构建AHP评价体系计算原料功效得分,同时对原料口感、频率赋值,以此为依据筛选药味并结合中医药理论进行配方。利用AHP计算“君臣佐使”权重向量,配方中所选原料的3项得分分别按君臣佐使加权后求和,得到“配方功效-配方频率-配方口感”矩阵,利用熵权法处理矩阵后使用TOPSIS法进行综合评价,实现配方设计。收集数据建立清咽通便双功能原料数据库,得到的40味原料以补虚药与清热药居多。其中经AHP评价功效得分较高(>1.0)的共有16种不同原料,除罗汉果外排名前5的分别为甘草、蜂蜜、玉竹、陈皮和西洋参。在此基础上,结合药对组合情况与原料口感得分,筛选得到包括罗汉果在内的11味候选原料,组成10个可能配方。对其进行熵权-TOPSIS分析评价后,由罗汉果、胖大海、麦冬、蜂蜜、甘草组成的配方排名第1位且与其他配方评分相差较大。该研究以罗汉果为例探究保健食品配方设计方法并实现配方多维度立体评价,为后续保健食品研发提供新的思路和方向。展开更多
The traditional technique for asexual propagation of Siraitia grosvenori in vitro is adopted widely by pressing the vine, which has a high risk of carrying viral diseases and limits the production of promoted cultivar...The traditional technique for asexual propagation of Siraitia grosvenori in vitro is adopted widely by pressing the vine, which has a high risk of carrying viral diseases and limits the production of promoted cultivars. So this paper reported in vitro regeneration of S. grosvenori by testing for shoot induction from various explant sources such as leaf, petiole and stem. Several phytohormone combinations of TDZ, BA and IAA were examined for shoot regeneration and NAA or IBA for rooting. The highest shoot induction rate (100% of regeneration frequency and 15.3 shoots per explant) in leaf was obtained by incubation on MS medium supplemented with 0.5 mg · L-1 TDZ, 2.0 mg · L-1 BA and 0.5 mg · L-1 IAA; unlike shoot regeneration in leaves, the most efficient bud inductions in petiole and stem explants were initiated on MS medium containing 0.2 mg · L-1 TDZ, 2.0 mg · L-1 BA and 0.5 mg · L-1 IAA, in addition, adventitious buds in petiole and stem explants needed to be transformed to MS medium for development; optimal root was obtained when shoots were cultured on 1/2MS medum supplemented with 0.5 mg · L-1 NAA or 0.5 mg · L-1 IBA.展开更多
[Objectives] To use co-clustering analysis and visualization method to analyze the research on Siraitiae Fructus in recent ten years,to know the hot spots and trend of research. [Methods] Relevant research results abo...[Objectives] To use co-clustering analysis and visualization method to analyze the research on Siraitiae Fructus in recent ten years,to know the hot spots and trend of research. [Methods] Relevant research results about S. Fructus in CNKI from January of 2007 to December of 2016 were retrieved by computers,and the retrieval time was February 20,2017. BICOMB,Net Draw,g CLUTO and SPSS19. 0 software were used to conduct co-clustering analysis and visualization analysis for included articles. Keywords were analyzed,and social network graph,visualization matrix,peak image and multidimensional scaling analysis map were drawn. Correlation among high-frequency key words were analyzed. [Results] Totally 723 articles were included,among which 70 articles were issued during 2012-2016; 76 key words were obtained by key word co-occurrence network map,among which mogroside,MOG,extraction process,tissue culture,cultivation technology,varieties,growth and development were in the core position; visualization and the peak image showed that the topics in this research field could be divided into 6 categories; research hotspot dynamic evolution showed that S. Fructus flower,beverage,total flavonoids,gene expression,gene cloning,enzyme,apoptosis,and S. Fructus seed oil would be the hot spots of further study. [Conclusions]This study reveals that the research on S. Fructus in the recent ten years is becoming mature,and expanding to deep level. This study can be promoted to discipline development evaluation of TCM research field.展开更多
基金supported by grants from the National Key Research and Development Program of China(No.2019YFA0905600)Tianjin Innovative Team Project(TD13-5087)Shangrao Crucial Research and Development Project(19A005)。
文摘Long-term artificial sweetener intake is linked to increased risk of obesity. In the present study, supplement of natural sweetener from Siraitia grosvenorii(SG)(or Momordica grosvenorii) fruit, compared with the artificial sweetener aspartame(ASM), was evaluated for anti-obesity effects on mice fed with high fat diet(HFD). We found that, in contrary to ASM, SG extracts prevented body weight gain, the insulin resistance and fat mass accumulation in HFD mice. SG extracts treatment inhibited the infiltration of inflammatory macrophages and lowered the levels of the fat inflammatory cytokines(leptin, macrophage chemoattractant protein 1(MCP-1) and tumor necrosis factor-α(TNF-α)) in adipose tissues. In addition, SG extracts supplement counteracted the remodeling of gut microbiota resulted from HFD. However, ASM supplement aggravated the HFD-induced obese performances, fat inflammation and dysregulation of gut microbiota. Taken together, our results indicate that supplement of SG extracts may represent a promising alternation of artificial sweeteners in preventing metabolic diseases.
基金Key Project of Sichuan Provincial Administration of TCM(2018KF009)Nanchong City School Science and Technology Strategic Cooperation Project(18SXHZ0393)First-class Discipline Construction Project of North Sichuan Medical College(CBY19-YLXK04-07).
文摘[Objectives]The purpose of this study was to provide reference for scientific introduction and rational production planning of Siraitia grosvenorii.[Methods]Using the Geographic Information System for Global Medicinal Plants(GMPGIS),the ecological factors and suitable producing areas of S.grosvenorii were analyzed.The maximum information entropy model MaxEnt and the GMPGIS analysis method were compared.Verification analysis was performed with cosine similarity and Kappa method.[Results]S.grosvenorii is mainly produced in China.Brazil and Congo(Democratic Republic)are the two countries with the largest potential distribution.Indonesia,Colombia,Peru,the United States,Bolivia,Thailand and Myanmar have great development potential in the introduction and cultivation of S.grosvenorii.In China,S.grosvenorii mainly grows in the coastal provinces dominated by Guangxi,with a tendency of gradually expanding to the north,where the temperature has been rising slowly compared with the original producing area of Guilin.Guangxi is the main producing area.Guangdong,Jiangxi and Hunan are regions with potential wide distribution.Fujian,Yunnan,Sichuan,Guizhou,Zhejiang,Chongqing,Hainan,Hubei and Taiwan,China also have small distributions.Among the 210 largest ecologically similar areas,the average cosine similarity was above 99.9%.[Conclusions]The potential distribution areas predicted by the GMPGIS analysis method have high prediction accuracy.This will provide effective scientific reference for the introduction and standardized cultivation of medicinal plants.
基金Supported by National Science&Technology Supporting Program of China(2011BAI01B03)National Natural Science Foundation of China(81373914)Natural Science Foundation of Guangxi Zhuang Autonomous Region(2013GXNSFDA019021,2013GXNSFBA019170,2015GXNSFBA139149,2015GX NSFBA139134)
文摘In order to provide molecular biological basis for breeding of excellent seedless varieties of Siraitia grosvenorii,the genetic background of 28 female triploid and male diploid individuals of S. grosvenorii was analyzed by using RAPD molecular markers. The results showed that female triploid and male diploid individuals of S. grosvenorii had abundant genetic background,with great genetic similarity coefficients and close genetic distance. Overall,the genetic background of female triploid and male diploid individuals of S. grosvenorii exhibited relatively low complexity. Therefore,it is necessary to take corresponding measures for germplasm innovation to enrich the genetic background of seedless parents of S. grosvenorii.
基金supported by the National Nature Science Foundation of China(No.81373914)National Key Technology Support Program(No.2011BAI01B03)Guangxi Natural Science Fundation(Nos.2013GXNSFDA019021 and 2012GXNSFAA053043)
文摘Mogrosides and steroid saponins are tetracyclic triterpenoids found in Siraitia grosvenorii.Squalene synthase(SQS) and cycloartenol synthase(CAS) are key enzymes in triterpenoid and steroid biosynthesis.In this study,full-length cDNAs of SgSQS and SgCAS were cloned by a rapid amplification of cDNA-ends with polymerase chain reaction(RACE-PCR) approach.The SgSQS cDNA has a 1254 bp open reading frame(ORF) encoding 417 amino acids,and the SgCAS cDNA contains a 2298 bp ORF encoding 765 amino acids.Bioinformatic analysis showed that the deduced SgSQS protein has two transmembrane regions in the C-terminal.Both SgSQS and SgCAS have significantly higher levels in fruits than in other tissues,suggesting that steroids and mogrosides are competitors for the same precursors in fruits.Combined in silico prediction and subcellular localization,experiments in tobacco indicated that SgSQS was probably in the cytoplasm or on the cytoskeleton,and SgCAS was likely located in the nucleus or cytosol.These results will provide a foundation for further study of SgSQS and SgCAS gene functions in S.grosvenorii,and may facilitate improvements in mogroside content in fruit by regulating gene expression.
基金supported by grants from the National Natural Science Foundation of China(Nos.81373914,81573521 and31400275)Program for Innovation Research Team(No.IT1306)of Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences and Peking Union Medical College
文摘CYP450 plays an essential role in the development and growth of the fruits of Siraitia grosvenorii. However, little is known about the SgCYP450-4 gene in S. grosvenorii. Here, based on transcriptome data, a full-length c DNA sequence of SgCYP450-4 was cloned by reverse transcriptasepolymerase chain reaction(RT-PCR) and rapid-amplification of c DNA ends(RACE) strategies. SgCYP450-4 is 1677 bp in length(Gen Bank accession No. AEM42985.1) and contains a complete open reading frame(ORF) of 1422 bp. The deduced protein was composed of 473 amino acids, the molecular weight is 54.01 kDa, the theoretical isoelectric point(PI) is 8.8, and the protein was predicted to possess cytochrome P450 domains. SgCYP450-4 gene was highly expressed in root, diploid fruit and fruit treated with hormone and pollination. At 10 days after treatment with pollination and hormones, the expression of SgCYP450-4had the highest level and then decreased over time, which was consistent with the development of fruits of S.Grosvenorii. Hormonal treatment could significantly induce the expression of SgCYP450-4. These results provide a reference for regulation of fruit development and the use of parthenocarpy to generate seedless fruit, and provide a scientific basis for the production of growth regulator application agents.
文摘该研究设计以罗汉果为核心的具有清咽润喉和润肠通便双功能的保健食品配方,并对其进行综合评价。通过收集整理含罗汉果的保健食品批文、专利和中成药信息建立数据库,使用关联规则算法(Apriori)、层次分析法(analytic hierarchy process,AHP)、熵权法、逼近理想解排序法(technique for order preference by similarity to solution,TOPSIS)等机器学习算法挖掘其中原料药味配方规律。围绕药味类别、归经和现有处方类型构建AHP评价体系计算原料功效得分,同时对原料口感、频率赋值,以此为依据筛选药味并结合中医药理论进行配方。利用AHP计算“君臣佐使”权重向量,配方中所选原料的3项得分分别按君臣佐使加权后求和,得到“配方功效-配方频率-配方口感”矩阵,利用熵权法处理矩阵后使用TOPSIS法进行综合评价,实现配方设计。收集数据建立清咽通便双功能原料数据库,得到的40味原料以补虚药与清热药居多。其中经AHP评价功效得分较高(>1.0)的共有16种不同原料,除罗汉果外排名前5的分别为甘草、蜂蜜、玉竹、陈皮和西洋参。在此基础上,结合药对组合情况与原料口感得分,筛选得到包括罗汉果在内的11味候选原料,组成10个可能配方。对其进行熵权-TOPSIS分析评价后,由罗汉果、胖大海、麦冬、蜂蜜、甘草组成的配方排名第1位且与其他配方评分相差较大。该研究以罗汉果为例探究保健食品配方设计方法并实现配方多维度立体评价,为后续保健食品研发提供新的思路和方向。
文摘The traditional technique for asexual propagation of Siraitia grosvenori in vitro is adopted widely by pressing the vine, which has a high risk of carrying viral diseases and limits the production of promoted cultivars. So this paper reported in vitro regeneration of S. grosvenori by testing for shoot induction from various explant sources such as leaf, petiole and stem. Several phytohormone combinations of TDZ, BA and IAA were examined for shoot regeneration and NAA or IBA for rooting. The highest shoot induction rate (100% of regeneration frequency and 15.3 shoots per explant) in leaf was obtained by incubation on MS medium supplemented with 0.5 mg · L-1 TDZ, 2.0 mg · L-1 BA and 0.5 mg · L-1 IAA; unlike shoot regeneration in leaves, the most efficient bud inductions in petiole and stem explants were initiated on MS medium containing 0.2 mg · L-1 TDZ, 2.0 mg · L-1 BA and 0.5 mg · L-1 IAA, in addition, adventitious buds in petiole and stem explants needed to be transformed to MS medium for development; optimal root was obtained when shoots were cultured on 1/2MS medum supplemented with 0.5 mg · L-1 NAA or 0.5 mg · L-1 IBA.
基金Supported by Guangxi Major Scientific Research and Technological Development Project(Gui Ke Zhong 1355001-4,14124002-11)
文摘[Objectives] To use co-clustering analysis and visualization method to analyze the research on Siraitiae Fructus in recent ten years,to know the hot spots and trend of research. [Methods] Relevant research results about S. Fructus in CNKI from January of 2007 to December of 2016 were retrieved by computers,and the retrieval time was February 20,2017. BICOMB,Net Draw,g CLUTO and SPSS19. 0 software were used to conduct co-clustering analysis and visualization analysis for included articles. Keywords were analyzed,and social network graph,visualization matrix,peak image and multidimensional scaling analysis map were drawn. Correlation among high-frequency key words were analyzed. [Results] Totally 723 articles were included,among which 70 articles were issued during 2012-2016; 76 key words were obtained by key word co-occurrence network map,among which mogroside,MOG,extraction process,tissue culture,cultivation technology,varieties,growth and development were in the core position; visualization and the peak image showed that the topics in this research field could be divided into 6 categories; research hotspot dynamic evolution showed that S. Fructus flower,beverage,total flavonoids,gene expression,gene cloning,enzyme,apoptosis,and S. Fructus seed oil would be the hot spots of further study. [Conclusions]This study reveals that the research on S. Fructus in the recent ten years is becoming mature,and expanding to deep level. This study can be promoted to discipline development evaluation of TCM research field.
