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Jianpi Decoction Combined with Medroxyprogesterone Acetate Alleviates Cancer Cachexia and Prevents Muscle Atrophy by Directly Inhibiting E3 Ubiquitin Ligase

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Chinese Journal of Integrative Medicine 2024年第6期30卷 499-506页

作者： LI Qi KONG Zhao-di wang huan GU Hong-hui CHEN Zhong Li Shi-guang CHEN Yi-qi CAI Yu YANG Zhen-jiang Department of Oncology and Hematology Shenzhen Traditional Chinese Medicine HospitalShenzhenGuangdong Province518033China College of Pharmacy/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education(MOE)of China Jinan UniversityGuangzhou510632China Guangdong Key Lab of Traditional Chinese Medicine Information Technology Jinan UniversityGuangzhou510632China

ObjectiveTo provide comprehensive evidence for the anti-cancer cachexia effect of Jianpi Decoction(JP)and to explore its mechanism of anti-cancer *** mouse model of colon cancer(CT26)-induced cancer cachexia(CC)was used to investigate the anti-CC effect of JP combined with medroxyprogesterone acetate(MPA).Thirty-six mice were equally divided into 6 groups:normal control,CC,MPA(100 mg·kg^(−1)·d^(−1)),MPA+low-dose(20 mg·kg^(−1)·d^(−1))JP(L-JP),MPA+medium-dose(30 mg·kg^(−1)·d^(−1))JP(M-JP),and MPA+high-dose(40 mg·kg^(−1)·d^(−1))JP(H-JP)*** successful modeling,the mice were administered by gavage for 11 *** body weight and tumor volume were measured and recorded every 2 d starting on the 8th day after *** liver,heart,spleen,lung,kidney,tumor and gastrocnemius muscle of mice were collected and *** pathological changes of the tumor was observed,and the cross-sectional area of the gastrocnemius muscle was *** protein expressions of STAT3 and E3 ubiquitinase in the gastrocnemius muscle were measured by Western *** addition,an in vitro C2C12 myotube formation model was established to investigate the role of JP in hindering dexamethasone-induced muscle *** vitro experiments were divided into control,model,and JP serum *** 2-d administration,microscopic photographs were taken and myotube diameters were *** blot was performed to measure the protein expressions of STAT3 and E3 *** combined with MPA restored tumor-induced weight loss(P<0.05,***)and muscle fiber size(P<0.01,***).Mechanistically,JP reduced the expression of atrophy-related proteins MuRF1 and MAFbx in tumor-induced muscle atrophy in vivo(P<0.05,***).In addition,JP reduced the expression of atrophy-related proteins MuRF1 and MAFbx and p-STAT3 phosphorylation(P<0.05 or P<0.01 *** group)in C2C12 myotubes treated with dexamethasone in *** of JP combined with MPA restores t

关键词： cancer cachexia muscle atrophy Jianpi Decoction Chinese medicine E3 ubiquitin ligases

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DAAO在砷暴露致仔鼠学习记忆损害中的作用

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中华地方病学杂志 2024年第6期43卷 440-445页

作者：金晓霞孙佳麒王欢王艳沈阳医学院公共卫生学院职业卫生与职业医学教研室沈阳

目的探究D-氨基酸氧化酶(D-amino acid oxidase, DAAO)在砷暴露致仔鼠学习记忆损害中的作用。方法将18只昆明种妊娠小鼠采用随机数字表法分为未处理组(蒸馏水, n = 6)和染砷组[饮用水中含60 mg/L亚砷酸钠(NaAsO2), n = 12], 自由饮水;... 详细信息

目的探究D-氨基酸氧化酶(D-amino acid oxidase, DAAO)在砷暴露致仔鼠学习记忆损害中的作用。方法将18只昆明种妊娠小鼠采用随机数字表法分为未处理组(蒸馏水, n = 6)和染砷组[饮用水中含60 mg/L亚砷酸钠(NaAsO2), n = 12], 自由饮水;自妊娠第1天至仔鼠断乳前经母鼠染砷, 仔鼠断乳后至实验结束以自由饮水方式染砷。仔鼠出生后6周, 根据母鼠的组别, 将染砷组仔鼠分为NaAsO2组和NaAsO2 + DAAO抑制剂6-氯苯并[d]异恶唑-3-醇(6-chlorobenzo[d]isoxazol-3-ol, CBIO)组, 未处理组仔鼠为对照组;对照组和NaAsO2组仔鼠腹腔注射0.5%羧甲基纤维素钠, NaAsO2 + CBIO组仔鼠腹腔注射60 mg/kg CBIO, 连续干预2周。干预结束后, 采用Y迷宫实验测定仔鼠空间学习记忆能力;仔鼠经心脏灌流后取脑组织, 并分离海马, 经苏木素-伊红(hematoxylin-eosin, HE)染色观察仔鼠海马组织神经细胞形态;超高效液相串联三重四级杆质谱法测定D-丝氨酸含量;实时荧光定量PCR测定突触素(synaptophysin, SYP), 突触小体相关蛋白25(synaptosomal-associated protein 25, SNAP25), 突触后致密物95(postsynaptic density 95, PSD95), DAAO和N-甲基-D-天冬氨酸受体(N-methyl-D-aspartate receptor, NMDAR)亚基NR1、NR2A、NR2B mRNA水平。结果对照组、NaAsO2组、NaAsO2 + CBIO组仔鼠Y迷宫实验交替反应率[(58.06 ± 3.78)%、(48.61 ± 5.75)%、(56.25 ± 6.76)%]比较, 差异有统计学意义(F = 4.87, P = 0.023), 且NaAsO2组明显低于对照组和NaAsO2 + CBIO组(均P < 0.05)。HE染色结果显示, 对照组仔鼠海马组织CA1、CA3区神经细胞数量较多, 状态良好;NaAsO2组神经细胞数量较少, 形态不规则, 细胞形态轮廓不清晰;NaAsO2 + CBIO组神经细胞数量较多, 细胞轮廓有所改善, 组织损伤减轻。对照组、NaAsO2组、NaAsO2 + CBIO组仔鼠海马D-丝氨酸含量及SYP、SNAP25、PSD95、DAAO、NR1、NR2A、NR2B mRNA水平比较, 差异均有统计学意义(F = 5.41、4.41、10.16、7.60、6.98、5.63、6.53、4.33, P = 0.017、0.031、0.002、0.005、0.007、0.015、0.009、0.033);其中, NaAsO2组仔鼠海马D-丝氨酸含量和SYP、SNAP25、PSD95、NR1、NR2B mRNA水平均明显低于对照组和NaAsO2 + CBIO组, NR2A mRNA水平明显低于对照组, DAAO mRNA水平明显高于对照组和NaAsO2 + CBIO组(均P < 0.05)。结论砷暴露能够损害仔鼠学习记忆能力, 降低海马D-丝氨酸含量以及NMDAR亚基和突触相关基因转录水平, 上调DAAO转录水平;而抑制DAAO可使D-丝氨酸含量以及NMDAR亚基和突触相关基因转录水平升高, 改善砷暴露所致的仔鼠学习记忆能力损害。

关键词：砷中毒 D-丝氨酸 D-氨基酸氧化酶 N-甲基-D-天冬氨酸受体

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Simultaneous production of high-frequency synthetic apomixis with high fertility and improved agronomic traits in hybrid rice

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Molecular Plant 2024年第1期17卷 4-7页

作者： Mengqiu Song Wumei wang Chun Ji Shengnan Li Wei Liu Xiaoyu Hul Anhui Feng Shuang Ruan Shiyun Du huan wang Kui Dai Longbiao Guo Qian Qian Hongqi Si Xingming Hu College of Agronomy Anhui Agricultural UniversityHefeiAnhui 230036China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhouZhejiang 310006China Rice Research Institute Anhui Academy of Agricultural SciencesHefeiAnhui 230031China Jiangxi Modern Seed Industry Co.NanchangJiangxi 330026China

Dear Editor,Utilization of heterosis is fundamental to modern agricultural improvement and contributes significantly to food security and agricultural development(Ouyang et al.,2022).However,heterosis of F,hybrids cannot be stably ***,or asexual reproduction through seeds,offers the potential for the fixation of heterosis in F,hybrids and the formation of clonal offspring,which could have considerable implications for plant breeding and agriculture(Schmidt,2020).But naturally occurring apomixis has never been found in major ***,synthetic apomixis has been successfully generated by inducing incomplete meiotic development combined with parthenogenesis development to produce cloned rice(Oryza sativa)seeds(Khanday et al.,2019;wang et al.,2019;Vernet et al.,2022;Wei et al.,2023).

关键词： sativa fertility breeding

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一种小样本数据驱动的雷达复合干扰轻量化感知网络

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北京航空航天大学学报 2024年第3期50卷 1005-1014页

作者：郎彬王欢宫健空军工程大学防空反导学院西安710051 西安黄河机电有限公司西安710043

基于深度学习的雷达干扰感知技术能精确感知各类雷达干扰类型,但需预先构建大规模且完备的训练样本,数据集构建工作量大、难度高,同时存在网络模型参数量较大、计算复杂度高的问题,导致在实际平台中难以应用。针对此问题,提出一种小样... 详细信息

基于深度学习的雷达干扰感知技术能精确感知各类雷达干扰类型,但需预先构建大规模且完备的训练样本,数据集构建工作量大、难度高,同时存在网络模型参数量较大、计算复杂度高的问题,导致在实际平台中难以应用。针对此问题,提出一种小样本数据驱动的雷达复合干扰轻量化感知网络,结合计算机视觉领域的“目标检测”思想建立干扰感知网络,利用雷达干扰时频分布数据提取多尺度特征图,预置锚框进行回归与分类,使用分组卷积与Ghost卷积对大参数量、高计算量的网络结构进行轻量化改进。实验结果表明:只需小规模的多种单一干扰模式样本,即可实现对单一干扰模式、两两复合模式及3类复合模式的灵活感知,在低干噪比条件下保持较高感知性能的同时大幅压缩模型的参数量与运算量。

关键词：雷达干扰感知小样本数据驱动复合干扰深度学习轻量级网络

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六氟化铀及氟化物汽液相平衡数据预测及精馏过程模拟

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化工学报 2024年第2期75卷 463-474页

作者：杨同王欢邓春中国石油大学(北京)化学工程与环境学院重质油全国重点实验室北京102249 中核第七研究设计院有限公司山西太原030012

精馏技术提纯六氟化铀是铀转化工艺的重要环节,该精馏工艺的模拟可为工艺设计及操作优化提供关键支撑。然而,由于六氟化铀及氟化物汽液相平衡数据及物性数据的缺乏,六氟化铀提纯精馏工艺的建模和模拟难以开展。为此,利用COSMOtherm和Tur... 详细信息

精馏技术提纯六氟化铀是铀转化工艺的重要环节,该精馏工艺的模拟可为工艺设计及操作优化提供关键支撑。然而,由于六氟化铀及氟化物汽液相平衡数据及物性数据的缺乏,六氟化铀提纯精馏工艺的建模和模拟难以开展。为此,利用COSMOtherm和Turbomole软件,预测UF_(6)与TiF_(4)二元体系汽液相平衡数据。通过预测已知的WF_(6)-UF_(6)二元体系汽液相平衡实验数据以间接验证COSMO-RS模型预测的准确性。利用Aspen Plus软件的物性常数估算系统(property constant estimation system),估算出缺失的无限稀释水溶液Gibbs生成能等物性参数。文献中UF_(6)饱和蒸气压实验数据与模拟值进行对比,相对误差在1.76%以内。根据文献中的实验数据和预测的汽液相平衡数据,利用Aspen Plus软件回归NRTL模型的二元交互作用参数。针对六氟化铀及氟化物的分离,设计直接分离序列和间接分离序列提纯UF_(6)的两种方案。设定UF_(6)产品纯度,以总年度费用(TAC)最小化为目标,采用灵敏度分析对塔板数、进料位置和回流比的关键参数进行优化,结果表明,间接分离序列提纯UF_(6)方案的TAC更低。

关键词：氟化物物性估算汽液平衡精馏

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社会网络理论视域中的职业教育产教关系:问题表征与关系重构

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职教论坛 2024年第5期40卷 36-43页

作者：王欢北京财贸职业学院高等职业教育研究所北京101126

考察职业教育产教内部关系对推进职业教育产教深度融合具有重要价值。社会网络理论提供了分析产教内部关系的全新框架,即结构洞驱动了以技能传递为核心的职业教育产教关系网络生成,产教关系深入是从技能需求出发的弱关系向强关系转化并... 详细信息

考察职业教育产教内部关系对推进职业教育产教深度融合具有重要价值。社会网络理论提供了分析产教内部关系的全新框架,即结构洞驱动了以技能传递为核心的职业教育产教关系网络生成,产教关系深入是从技能需求出发的弱关系向强关系转化并保持适度平衡的过程,产教互动的本质是以技能转换为诉求的产教资源双向转化。而当前我国职业教育产教关系呈现出僵化、失衡、退化的产教强弱关系样态,结构洞中介作用弱化导致产教资源流动受限,职业教育存量社会资源的可观与高质量技术技能社会资本匮乏并存。未来产教关系构建的着力点应以强化弱关系、拓展结构洞、增强社会资本为目标,创新构建以业缘关系和地缘关系相互交织、团体格局和差序格局优势互补、信息流动与资源共享有效协同的产教融合载体。

关键词：社会网络理论职业教育产教关系弱关系结构洞社会资本

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Comparative transcriptomic analysis reveals the molecular changes of acute pancreatitis in experimental models

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World Journal of Gastroenterology 2024年第14期30卷 2038-2058页

作者： Pan Zheng Xue-Yang Li Xiao-Yu Yang huan wang Ling Ding Cong He Jian-Hua Wan Hua-Jing Ke Nong-Hua Lu Nian-Shuang Li Yin Zhu Department of Gastroenterology Digestive Disease HospitalThe First Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Acute pancreatitis(AP)encompasses a spectrum of pancreatic inflammatory conditions,ranging from mild inflammation to severe pancreatic necrosis and multisystem organ *** the challenges associated with obtaining human pancreatic samples,research on AP predominantly relies on animal *** this study,we aimed to elucidate the fundamental molecular mechanisms underlying AP using various AP *** To investigate the shared molecular changes underlying the development of AP across varying severity *** AP was induced in animal models through treatment with caerulein alone or in combination with lipopolysaccharide(LPS).Additionally,using Ptf1αto drive the specific expression of the hM3 promoter in pancreatic acinar cells transgenic C57BL/6J-hM3/Ptf1α(cre)mice were administered Clozapine N-oxide to induce ***,we conducted RNA sequencing of pancreatic tissues and validated the expression of significantly different genes using the Gene Expression Omnibus(GEO)*** Caerulein-induced AP showed severe inflammation and edema,which were exacerbated when combined with LPS and accompanied by partial pancreatic tissue *** with the control group,RNA sequencing analysis revealed 880 significantly differentially expressed genes in the caerulein model and 885 in the caerulein combined with the LPS *** Encyclopedia of Genes and Genomes enrichment analysis and Gene Set Enrichment Analysis indicated substantial enrichment of the TLR and NOD-like receptor signaling pathway,TLR signaling pathway,and NF-κB signaling pathway,alongside elevated levels of apoptosis-related pathways,such as apoptosis,P53 pathway,and phagosome *** significantly elevated genes in the TLR and NOD-like receptor signaling pathways,as well as in the apoptosis pathway,were validated through quantitative real-time PCR experiments in animal *** from the GEO database revealed that only MYD88 concurred in both mouse panc

关键词： Acute pancreatitis RNA-sequencing Experimental acute pancreatitis models Inflammatory Apoptosis TLR and NOD-like signaling pathways

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Recent advances in chemical protein synthesis:method developments and biological applications

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Science China Chemistry 2024年第4期67卷 1060-1096页

作者： Suwei Dong Ji-Shen Zheng Yiming Li huan wang Gong Chen Yongxiang Chen Gemin Fang Jun Guo Chunmao He Honggang Hu Xuechen Li Yanmei Li Zigang Li Man Pan Shan Tang Changlin Tian Ping wang Bian Wu Chuanliu Wu Junfeng Zhao Lei Liu State Key Laboratory of Natural and Biomimetic Drugs and School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Division of Life Sciences and Medicine University of Science and Technology of ChinaHefei 230027China School of Food and Biological Engineering Engineering Research Center of Bio-processMinistry of EducationHefei University of TechnologyHefei 230009China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin 300071China Department of Chemistry Tsinghua UniversityBeijing 100084China Institute of Health Sciences Anhui UniversityHefei 230601China College of Chemistry Central China Normal UniversityWuhan 430079China School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510640China School of Medicine or Institute of Translational Medicine Shanghai UniversityShanghai 200444China Department of Chemistry The University of Hong KongHong Kong 999077China Shenzhen Graduate School Peking UniversityShenzhen 518055China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Life Sciences University of Science and Technology of ChinaHefei 230026China Department of Chemical Biology Shanghai Jiao Tong UniversityShanghai 200240China Institute of Microbiology Chinese Academy of SciencesBeijing 100101China Department of Chemistry Xiamen UniversityXiamen 361005China School of Pharmaceutical Science Guangzhou Medical UniversityGuangzhou 511436China

The central dogma of modern biology underscores the pivotal roles proteins play in diverse biological processes,the study of which necessitates advanced methods to produce proteins with precision and *** protein synthesis,a powerful approach utilizing chemical reactions for the de novo construction of structurally accurate proteins,has emerged as a transformative tool for studying proteins and generating protein derivatives/mimics inaccessible by natural biological machinery,including post-translationally modified proteins,proteins comprised of unnatural amino acids,as well as mirror-image *** review summarizes recent strides in synthetic method developments for chemical protein synthesis,including innovative techniques in solid-phase peptide synthesis,the challenges presented by difficult sequences in either synthesis or folding and the exploration of novel ligation reactions using both chemical and enzymatic ***,the review also delves into newly developed protocols for site-selective protein modifications and the generation of stapled or macrocyclized peptides/miniproteins,highlighting the power of chemical methods to make structurally diverse *** applications of synthetic proteins in investigating post-translational modifications(phosphorylation,lipidation,glycosylation,ubiquitination,etc.),mirror-image biological processes and drug development are further ***,these topics provide a comprehensive overview of the current landscape of chemical protein synthesis.

关键词： chemical protein synthesis solid-phase peptide synthesis ligation reactions post-translational modifications mirror-image proteins peptide drugs

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水-土资源有效利用视角下我国粮食生产区域布局优化研究

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中州学刊 2024年第5期 41-47页

作者：沈辰王欢中国农业科学院农业信息研究所北京100081 北京工商大学经济学院北京102488

多年来,我国粮食生产取得巨大成就,然而随着粮食生产格局的演变,我国水-土资源配置效率低下,威胁到长期粮食安全与生态安全。从我国资源条件来看,粮食生产面临着耕地数量不足、质量不高,水-土资源在“非农化”“非粮化”趋势中不断被挤... 详细信息

多年来,我国粮食生产取得巨大成就,然而随着粮食生产格局的演变,我国水-土资源配置效率低下,威胁到长期粮食安全与生态安全。从我国资源条件来看,粮食生产面临着耕地数量不足、质量不高,水-土资源在“非农化”“非粮化”趋势中不断被挤占,水-土资源分布不均存在时空错配等资源刚性约束,而粮食生产布局演变又进一步激化了粮食生产水-土资源供给与需求之间的矛盾。为此,发挥资源利用的比较优势,合理布局粮食生产,提高水-土资源有效利用水平,是保障粮食生产可持续发展的关键。

关键词：水-土资源资源有效利用粮食生产区域布局优化

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NiCe(x)/FLRC-TiO_(2)催化剂的制备及其加氢脱氧性能研究

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化学学报 2024年第3期82卷 287-294页

作者：张强王欢王帅王园园张梅宋华东北石油大学化学化工学院黑龙江省大庆市163318

生物质作为自然界唯一可再生的有机碳源,其转化利用具有重要意义.本工作制备了具有特殊形貌和孔道结构的放射状二氧化钛(FLRC-TiO_(2))载体,并在高加氢活性Ni基础上,引入Ce赋予催化剂酸活性位,制备了负载型金属-酸双功能NiCe(x)/FLRC-Ti... 详细信息

生物质作为自然界唯一可再生的有机碳源,其转化利用具有重要意义.本工作制备了具有特殊形貌和孔道结构的放射状二氧化钛(FLRC-TiO_(2))载体,并在高加氢活性Ni基础上,引入Ce赋予催化剂酸活性位,制备了负载型金属-酸双功能NiCe(x)/FLRC-TiO_(2)催化剂(x为Ni和Ce的原子比),并以对甲酚为模型化合物,研究了Ni/Ce比对催化剂加氢脱氧(HDO)性能的影响.结果表明,Ce的引入能够增强催化剂的酸性,增强催化剂C—OH键氢解能力,从而提高甲基环己烷(MCH)选择性.与单金属Ni/FLRC-TiO_(2)相比,双金属NiCe(1)/FLRC-TiO_(2)的目标产物MCH的选择性显著提高.在275℃、3 MPa、2.5 h的反应条件下, NiCe(1)/FLRC-TiO_(2)催化剂对对甲酚转化率为100%,脱氧产物选择性为97.9%,且MCH的选择性高达95.4%. NiCe(1)/FLRC-TiO_(2)催化剂上的HDO以hydrogenation (HYD)反应路径为主.

关键词：加氢脱氧 NiCe催化剂放射状孔道结构二氧化钛对甲酚

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