[目的]本研究旨在探究树莓果肉多糖RPP-1的体外免疫活性,并结合转录组学初步分析RPP-1免疫调节的作用机制。[方法]以来源于树莓果肉的多糖组分RPP-1为试验材料,分别采用CCK-8法和荧光探针法测定RPP-1对小鼠巨噬细胞RAW264.7细胞活力和...[目的]本研究旨在探究树莓果肉多糖RPP-1的体外免疫活性,并结合转录组学初步分析RPP-1免疫调节的作用机制。[方法]以来源于树莓果肉的多糖组分RPP-1为试验材料,分别采用CCK-8法和荧光探针法测定RPP-1对小鼠巨噬细胞RAW264.7细胞活力和吞噬能力的影响,利用RT-qPCR和ELISA分别从转录和蛋白质水平检测RPP-1对RAW264.7细胞上清液中NO和细胞因子的作用。同时,采用转录组学对差异表达基因(differentially expressed genes,DEG)进行基因本体(gene ontology,GO)功能注释、京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析和蛋白质-蛋白质相互作用(protein-protein interaction,PPI)网络分析。[结果]RPP-1能显著促进小鼠巨噬细胞RAW264.7的活力和吞噬能力,并明显增强细胞培养上清液中的NO、IL-6、IL-1β和TNF-α水平,提高iNOS、TNF-α、IL-6和IL-1βmRNA的相对表达水平,显示出较强的体外免疫增强作用。转录组学分析发现,与空白组相比,经RPP-1处理的RAW264.7细胞中共有286个与免疫调节相关的DEG,其中111个DEG下调,175个DEG上调;GO功能注释结果表明这些DEG主要参与细胞过程、生物调节、代谢过程、发育过程和免疫系统过程;KEGG富集分析结果显示差异基因显著富集于系统性红斑狼疮、细胞因子-细胞因子受体相互作用和TNF信号通路;PPI网络分析发现枢纽基因为IL-6、IL-1β、Rad51ap1、H2afx、Birc5、Ccl5和Pbk。[结论]树莓果肉多糖RPP-1对小鼠巨噬细胞RAW264.7具有免疫增强作用,结合体外活性试验与转录组学分析结果,RPP-1的免疫增强作用可能通过细胞因子-细胞因子受体相互作用及TNF信号传导途径调节实现,且其关键基因为IL-6、IL-1β。展开更多
For low-light image enhancement tasks,RAW images surpass RGB images due to their high information content,however,their noise and single-channel nature challenge feature extraction.Existing methods using multi-stage c...For low-light image enhancement tasks,RAW images surpass RGB images due to their high information content,however,their noise and single-channel nature challenge feature extraction.Existing methods using multi-stage convolutional neural network(CNN)frameworks struggle with global feature extraction,while single-stage CNN-transformer fusions often result in residual noise.To overcome these limitations,this paper introduces a multi-stage RAW image enhancement network combining CNN and transformer.Considering the characteristics inherent to the task,we devised a CNN-based denoising block for the denoising stage and incorporated wavelet information to enhance frequency features.A transformer-based correction block has been designed for the color and white balance recovery stage,with the white balance being adjusted dynamically using a signal-to-noise ratio(SNR)map.With this design,our method outperforms other state-of-the-art models in all metrics on the Sony and Fuji datasets of see-in-the-dark(SID),and achieves optimal structural similarity index measurement(SSIM)on the mono-colored raw(MCR)dataset.展开更多
This one-hour webinar is a presentation of the new CEN Technical Specification for the exchange format of operational raw data in support of the“observed data”category of the MMTIS EU delegated regulation.
Peanut allergy(PA),which affects an increasing proportion of people,is gaining increasing interests.Clarification of the mechanism underlying PA may aid in the identification of novel biomarkers and strategies for cli...Peanut allergy(PA),which affects an increasing proportion of people,is gaining increasing interests.Clarification of the mechanism underlying PA may aid in the identification of novel biomarkers and strategies for clinical intervention in allergic patients.In this study,raw peanut protein(Raw),roasted peanut protein(Roast),high-molecular-weight protein aggregation from Roast(OH),and the remaining components excluding OH from roasted peanut(OL)were administrated via intraperitoneal injection to challenge BALB/c mice.The allergic response was assessed,and the levels of peanut-specific immunoglobulin E,mouse mast cell protease-I,and T-lymphocyte subsets and secreted cytokines were detected.Then,serum untargeted metabolomics was investigated.Results show that Raw induced robust anaphylaxis in mice and up-or down-regulated 269 serum metabolites that mainly affected amino acid metabolism,including tryptophan metabolism,and induced disruption of tricarboxylic acid(TCA)cycle pathway in serum.Roast,OH and OL induced mild anaphylaxis in mice and mainly affected the glycerophospholipid metabolism in serum.Compared with Tris,OH upregulated the glycerophospholipid metabolism pathway in mouse serum,whereas Roast and OL showed the reversed effect.Mice in the Roast,OL,and OH groups all showed upregulated glycerophospholipid metabolism in serum compared with those in the Raw group.Meanwhile,different components of roasted peanut caused various changes in pathways when compared with each other.Compared with mice in the Roast group,those in the OL group displayed downregulated tryptophan and tyrosine metabolism,and those in the OH group showed upregulated glycerophospholipid metabolism and downregulated TCA cycle.The differences in serum metabolic profiles in mice implied that the processing form of allergen that patients are sensitized to and the severity of allergy should be considered in the analysis of serum biomarkers.展开更多
摘要[目的]本研究旨在探究树莓果肉多糖RPP-1的体外免疫活性,并结合转录组学初步分析RPP-1免疫调节的作用机制。[方法]以来源于树莓果肉的多糖组分RPP-1为试验材料,分别采用CCK-8法和荧光探针法测定RPP-1对小鼠巨噬细胞RAW264.7细胞活力和吞噬能力的影响,利用RT-qPCR和ELISA分别从转录和蛋白质水平检测RPP-1对RAW264.7细胞上清液中NO和细胞因子的作用。同时,采用转录组学对差异表达基因(differentially expressed genes,DEG)进行基因本体(gene ontology,GO)功能注释、京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析和蛋白质-蛋白质相互作用(protein-protein interaction,PPI)网络分析。[结果]RPP-1能显著促进小鼠巨噬细胞RAW264.7的活力和吞噬能力,并明显增强细胞培养上清液中的NO、IL-6、IL-1β和TNF-α水平,提高iNOS、TNF-α、IL-6和IL-1βmRNA的相对表达水平,显示出较强的体外免疫增强作用。转录组学分析发现,与空白组相比,经RPP-1处理的RAW264.7细胞中共有286个与免疫调节相关的DEG,其中111个DEG下调,175个DEG上调;GO功能注释结果表明这些DEG主要参与细胞过程、生物调节、代谢过程、发育过程和免疫系统过程;KEGG富集分析结果显示差异基因显著富集于系统性红斑狼疮、细胞因子-细胞因子受体相互作用和TNF信号通路;PPI网络分析发现枢纽基因为IL-6、IL-1β、Rad51ap1、H2afx、Birc5、Ccl5和Pbk。[结论]树莓果肉多糖RPP-1对小鼠巨噬细胞RAW264.7具有免疫增强作用,结合体外活性试验与转录组学分析结果,RPP-1的免疫增强作用可能通过细胞因子-细胞因子受体相互作用及TNF信号传导途径调节实现,且其关键基因为IL-6、IL-1β。
摘要For low-light image enhancement tasks,RAW images surpass RGB images due to their high information content,however,their noise and single-channel nature challenge feature extraction.Existing methods using multi-stage convolutional neural network(CNN)frameworks struggle with global feature extraction,while single-stage CNN-transformer fusions often result in residual noise.To overcome these limitations,this paper introduces a multi-stage RAW image enhancement network combining CNN and transformer.Considering the characteristics inherent to the task,we devised a CNN-based denoising block for the denoising stage and incorporated wavelet information to enhance frequency features.A transformer-based correction block has been designed for the color and white balance recovery stage,with the white balance being adjusted dynamically using a signal-to-noise ratio(SNR)map.With this design,our method outperforms other state-of-the-art models in all metrics on the Sony and Fuji datasets of see-in-the-dark(SID),and achieves optimal structural similarity index measurement(SSIM)on the mono-colored raw(MCR)dataset.
摘要This one-hour webinar is a presentation of the new CEN Technical Specification for the exchange format of operational raw data in support of the“observed data”category of the MMTIS EU delegated regulation.
基金supported by the National Natural Science Foundation of China(32160540)the National Key Research and Development Program of China(2023YFF1104002)。
摘要Peanut allergy(PA),which affects an increasing proportion of people,is gaining increasing interests.Clarification of the mechanism underlying PA may aid in the identification of novel biomarkers and strategies for clinical intervention in allergic patients.In this study,raw peanut protein(Raw),roasted peanut protein(Roast),high-molecular-weight protein aggregation from Roast(OH),and the remaining components excluding OH from roasted peanut(OL)were administrated via intraperitoneal injection to challenge BALB/c mice.The allergic response was assessed,and the levels of peanut-specific immunoglobulin E,mouse mast cell protease-I,and T-lymphocyte subsets and secreted cytokines were detected.Then,serum untargeted metabolomics was investigated.Results show that Raw induced robust anaphylaxis in mice and up-or down-regulated 269 serum metabolites that mainly affected amino acid metabolism,including tryptophan metabolism,and induced disruption of tricarboxylic acid(TCA)cycle pathway in serum.Roast,OH and OL induced mild anaphylaxis in mice and mainly affected the glycerophospholipid metabolism in serum.Compared with Tris,OH upregulated the glycerophospholipid metabolism pathway in mouse serum,whereas Roast and OL showed the reversed effect.Mice in the Roast,OL,and OH groups all showed upregulated glycerophospholipid metabolism in serum compared with those in the Raw group.Meanwhile,different components of roasted peanut caused various changes in pathways when compared with each other.Compared with mice in the Roast group,those in the OL group displayed downregulated tryptophan and tyrosine metabolism,and those in the OH group showed upregulated glycerophospholipid metabolism and downregulated TCA cycle.The differences in serum metabolic profiles in mice implied that the processing form of allergen that patients are sensitized to and the severity of allergy should be considered in the analysis of serum biomarkers.