Scutellaria baicalensis Georgi produces abundant root-specific f lavones(RSFs),which provide various benefits to human health.We have elucidated the complete biosynthetic pathways of baicalein and wogonin.However,the ...Scutellaria baicalensis Georgi produces abundant root-specific f lavones(RSFs),which provide various benefits to human health.We have elucidated the complete biosynthetic pathways of baicalein and wogonin.However,the transcriptional regulation of f lavone biosynthesis in S.baicalensis remains unclear.We show that the SbMYB3 transcription factor functions as a transcriptional activator involved in the biosynthesis of RSFs in S.baicalensis.Yeast one-hybrid and transcriptional activation assays showed that SbMYB3 binds to the promoter of flavone synthase II-2(SbFNSII-2)and enhances its transcription.In S.baicalensis hairy roots,RNAi of SbMYB3 reduced the accumulation of baicalin and wogonoside,and SbMYB3 knockout decreased the biosynthesis of baicalein,baicalin,wogonin,and wogonoside,whereas SbMYB3 overexpression enhanced the contents of baicalein,baicalin,wogonin,and wogonoside.Transcript profiling by qRT–PCR demonstrated that SbMYB3 activates SbFNSII-2 expression directly,thus leading to more abundant accumulation of RSFs.This study provides a potential target for metabolic engineering of RSFs.展开更多
Scutellaria baicalensis Georgi,a member of the Lamiaceae family,is a widely utilized medicinal plant.The flavones extracted from S.baicalensis contribute to numerous health benefits,including anti-inflammatory,antivir...Scutellaria baicalensis Georgi,a member of the Lamiaceae family,is a widely utilized medicinal plant.The flavones extracted from S.baicalensis contribute to numerous health benefits,including anti-inflammatory,antiviral,and anti-tumor activities.However,the incomplete genome assembly hinders biological studies on S.baicalensis.This study presents the first telomere-to-telomere(T2T)gap-free genome assembly of S.baicalensis through the integration of Pacbio HiFi,Nanopore ultra-long and Hi-C technologies.A total of 384.59 Mb of genome size with a contig N50 of 42.44 Mb was obtained,and all sequences were anchored into nine pseudochromosomes without any gap or mismatch.In addition,we analysed the major cyanidin-and delphinidin-based anthocyanins involved in the determination of blue-purple flower using a widely-targeted metabolome approach.Based on the genome-wide identification of Cytochrome P450(CYP450)gene family,three genes(SbFBH1,2,and 5)encoding flavonoid 3′-hydroxylases(F3′Hs)and one gene(SbFBH7)encoding flavonoid 3′5′-hydroxylase(F3′5′H)were found to hydroxylate the B-ring of flavonoids.Our studies enrich the genomic information available for the Lamiaceae family and provide a toolkit for discovering CYP450 genes involved in the flavonoid decoration.展开更多
我国是肝细胞癌(肝癌)大国,全世界约有50%肝癌来自我国,且总体生存期较差。首诊时中晚期患者比例较高是我国肝癌病死率高的重要原因[1]。随着系统治疗的进步,中晚期肝癌的治疗模式发生了巨大的转变,肿瘤完全切除是达到根治性目的的重要...我国是肝细胞癌(肝癌)大国,全世界约有50%肝癌来自我国,且总体生存期较差。首诊时中晚期患者比例较高是我国肝癌病死率高的重要原因[1]。随着系统治疗的进步,中晚期肝癌的治疗模式发生了巨大的转变,肿瘤完全切除是达到根治性目的的重要保证,更是确保晚期生存获益的前提[1,2]。如何将不可切除肝癌通过转化治疗降期,创造根治性手术切除的机会将大大提高中晚期患者的生存获益。近年来,随着精准医学的发展,尤其是多靶点激酶抑制剂为代表的靶向治疗,及以PD-1和PD-L1为代表的免疫治疗,正逐步改变中晚期肝癌的围手术期治疗策略[3,4,5]。目前,阿替利珠单抗联合贝伐珠单抗仍为一线推荐的系统治疗方案(Ⅰ级推荐)[6]。然而,以免疫检查点抑制剂(immune checkpoint inhibitors,ICI)为主的联合治疗方案在Ⅱ期及Ⅲ期临床实验及临床实践中均显示出较好的安全性及疗效,随着ORIENT-32及KEYNOTE 524/Study117数据公布[7],中国临床肿瘤学会(Chinese Society of Clinical Oncology,CSCO)已将以ICI联合抗VEGF单克隆抗体及ICI联合酪氨酸激酶抑制剂(tyrosine kinase inhibitor,TKI)类药物列为一线推荐[8]。现将吉林大学第二医院收治的1例中国肝癌临床分期(China Liver Cancer Staging,CNLC)Ⅲa期合并胆管癌栓的不可切除肝癌患者,经信迪利单抗联合仑伐替尼转化后根治性手术治疗,术后评估为完全缓解(complete response,CR)的诊治过程报告如下。展开更多
A radiant floor cooling system(RFCS)is a high-comfort and low energy consumption system suitable for residential buildings.Radiant floor systems usually work with fresh air,and their operating performance is affected ...A radiant floor cooling system(RFCS)is a high-comfort and low energy consumption system suitable for residential buildings.Radiant floor systems usually work with fresh air,and their operating performance is affected by climatic conditions.Indoor and outdoor environmental disturbances and the system’s control strategy affect the indoor thermal comfort and energy efficiency of the system.Firstly,a multi-story residential building model was established in this study.Transient system simulation program was used to study the operation dynamics of three control strategies of the RFCS based on the calibrated model.Then,the performance of the control strategies in five climate zones in China were compared using multi-criteria decision-making in combination.The results show that control strategy has a negligible effect on condensation risk,but the thermal comfort and economic performance differ for different control strategies.The adaptability of different control strategies varies in different climate zones based on the consideration of multiple factors.The performance of the direct-ground cooling source system is better in Hot summer and warm winter zone.The variable air volume control strategy scores higher in Serve cold and Temperate zones,and the hours exceeding thermal comfort account for less than 3%of the total simulation period.Therefore,it is suggested to choose the RFCS control strategy for residential buildings according to the climate zone characteristics,to increase the energy savings.Our results provide a reliable reference for implementing RFCSs in residential buildings.展开更多
基金supported by the National Key R&D Program of China(2018YFC1706200)the National Natural Science Foundation of China(31870282 and 31700268)+1 种基金the Chenshan Special Fund for Shanghai Landscaping Administration Bureau Program(G182401,G192419,and G212401)the Youth Innovation Promotion Association,Chinese Academy of Sciences.
文摘Scutellaria baicalensis Georgi produces abundant root-specific f lavones(RSFs),which provide various benefits to human health.We have elucidated the complete biosynthetic pathways of baicalein and wogonin.However,the transcriptional regulation of f lavone biosynthesis in S.baicalensis remains unclear.We show that the SbMYB3 transcription factor functions as a transcriptional activator involved in the biosynthesis of RSFs in S.baicalensis.Yeast one-hybrid and transcriptional activation assays showed that SbMYB3 binds to the promoter of flavone synthase II-2(SbFNSII-2)and enhances its transcription.In S.baicalensis hairy roots,RNAi of SbMYB3 reduced the accumulation of baicalin and wogonoside,and SbMYB3 knockout decreased the biosynthesis of baicalein,baicalin,wogonin,and wogonoside,whereas SbMYB3 overexpression enhanced the contents of baicalein,baicalin,wogonin,and wogonoside.Transcript profiling by qRT–PCR demonstrated that SbMYB3 activates SbFNSII-2 expression directly,thus leading to more abundant accumulation of RSFs.This study provides a potential target for metabolic engineering of RSFs.
基金This work is sponsored by Natural Science Foundation of Shanghai(22ZR1479500)Special Fund for Scientific Research of Shanghai Landscaping&City Appearance Administrative Bureau(G212401)+2 种基金Ministry of Science and Technology of China(YDZX20223100001003)Funding for Shanghai science and technology promoting agriculture from Shanghai Agriculture and Rural Affairs Commission(Hu Nong Ke Chan Zi(2023)No.8)Youth Innovation Promotion Association of Chinese Academy of Sciences.Q.Z.is also supported by the Shanghai Youth Talent Support Program and SANOFI-SIBS scholarship.We greatly appreciate the experimental facilities and services provided by the office of Chenshan Plant Science Research Center.We also thank Yanbo Huang from Shanghai National Forest Germplasm Resource Center of Lamiaceae Plant for the photograph of S.baicalensis in Fig.1.
文摘Scutellaria baicalensis Georgi,a member of the Lamiaceae family,is a widely utilized medicinal plant.The flavones extracted from S.baicalensis contribute to numerous health benefits,including anti-inflammatory,antiviral,and anti-tumor activities.However,the incomplete genome assembly hinders biological studies on S.baicalensis.This study presents the first telomere-to-telomere(T2T)gap-free genome assembly of S.baicalensis through the integration of Pacbio HiFi,Nanopore ultra-long and Hi-C technologies.A total of 384.59 Mb of genome size with a contig N50 of 42.44 Mb was obtained,and all sequences were anchored into nine pseudochromosomes without any gap or mismatch.In addition,we analysed the major cyanidin-and delphinidin-based anthocyanins involved in the determination of blue-purple flower using a widely-targeted metabolome approach.Based on the genome-wide identification of Cytochrome P450(CYP450)gene family,three genes(SbFBH1,2,and 5)encoding flavonoid 3′-hydroxylases(F3′Hs)and one gene(SbFBH7)encoding flavonoid 3′5′-hydroxylase(F3′5′H)were found to hydroxylate the B-ring of flavonoids.Our studies enrich the genomic information available for the Lamiaceae family and provide a toolkit for discovering CYP450 genes involved in the flavonoid decoration.
文摘我国是肝细胞癌(肝癌)大国,全世界约有50%肝癌来自我国,且总体生存期较差。首诊时中晚期患者比例较高是我国肝癌病死率高的重要原因[1]。随着系统治疗的进步,中晚期肝癌的治疗模式发生了巨大的转变,肿瘤完全切除是达到根治性目的的重要保证,更是确保晚期生存获益的前提[1,2]。如何将不可切除肝癌通过转化治疗降期,创造根治性手术切除的机会将大大提高中晚期患者的生存获益。近年来,随着精准医学的发展,尤其是多靶点激酶抑制剂为代表的靶向治疗,及以PD-1和PD-L1为代表的免疫治疗,正逐步改变中晚期肝癌的围手术期治疗策略[3,4,5]。目前,阿替利珠单抗联合贝伐珠单抗仍为一线推荐的系统治疗方案(Ⅰ级推荐)[6]。然而,以免疫检查点抑制剂(immune checkpoint inhibitors,ICI)为主的联合治疗方案在Ⅱ期及Ⅲ期临床实验及临床实践中均显示出较好的安全性及疗效,随着ORIENT-32及KEYNOTE 524/Study117数据公布[7],中国临床肿瘤学会(Chinese Society of Clinical Oncology,CSCO)已将以ICI联合抗VEGF单克隆抗体及ICI联合酪氨酸激酶抑制剂(tyrosine kinase inhibitor,TKI)类药物列为一线推荐[8]。现将吉林大学第二医院收治的1例中国肝癌临床分期(China Liver Cancer Staging,CNLC)Ⅲa期合并胆管癌栓的不可切除肝癌患者,经信迪利单抗联合仑伐替尼转化后根治性手术治疗,术后评估为完全缓解(complete response,CR)的诊治过程报告如下。
基金This work was funded by the Natural Science Foundation of Shandong Province(ZR2021ME199,ZR2021ME237)the Support Plan for Outstanding Youth Innovation Team in Colleges and Universities of Shandong Province(2019KJG005).This work was also supported by the Plan of Introduction and Cultivation for Young Innovative Talents in Colleges and Universities of Shandong Province,and Funding for Domestic Visiting Scholars at Shandong Jianzhu University.
文摘A radiant floor cooling system(RFCS)is a high-comfort and low energy consumption system suitable for residential buildings.Radiant floor systems usually work with fresh air,and their operating performance is affected by climatic conditions.Indoor and outdoor environmental disturbances and the system’s control strategy affect the indoor thermal comfort and energy efficiency of the system.Firstly,a multi-story residential building model was established in this study.Transient system simulation program was used to study the operation dynamics of three control strategies of the RFCS based on the calibrated model.Then,the performance of the control strategies in five climate zones in China were compared using multi-criteria decision-making in combination.The results show that control strategy has a negligible effect on condensation risk,but the thermal comfort and economic performance differ for different control strategies.The adaptability of different control strategies varies in different climate zones based on the consideration of multiple factors.The performance of the direct-ground cooling source system is better in Hot summer and warm winter zone.The variable air volume control strategy scores higher in Serve cold and Temperate zones,and the hours exceeding thermal comfort account for less than 3%of the total simulation period.Therefore,it is suggested to choose the RFCS control strategy for residential buildings according to the climate zone characteristics,to increase the energy savings.Our results provide a reliable reference for implementing RFCSs in residential buildings.
