目的探讨PHLPP2与EGFR+TP53共突变晚期肺腺癌(LUAD)患者靶向联合化疗疗效及与铁死亡的关系。方法回顾2018年8月至2023年8月的98例行靶向联合化疗治疗EGFR+TP53共突变晚期LUAD患者资料。分析PHLPP2突变情况,根据预后分为预后不良组(n=47...目的探讨PHLPP2与EGFR+TP53共突变晚期肺腺癌(LUAD)患者靶向联合化疗疗效及与铁死亡的关系。方法回顾2018年8月至2023年8月的98例行靶向联合化疗治疗EGFR+TP53共突变晚期LUAD患者资料。分析PHLPP2突变情况,根据预后分为预后不良组(n=47)和预后良好组(n=51)。限制性立方样条(RCS)模型分析铁死亡指标与预后不良的剂量反应关系。比较不同PHLPP2突变类型下铁死亡指标水平,及其与预后不良的关系。结果PHLPP2突变率为30.61%,主要为错义突变和点突变。预后不良组血清铁(SF)、丙二醛(MDA)、活性氧(ROS)低于预后良好组(P<0.05),谷胱甘肽过氧化酶4(GPX4)、谷胱甘肽(GSH)、PHLPP2突变类型高于预后良好组(P<0.05)。预后不良风险与SF、GPX4、GSH、MDA和ROS均呈非线性剂量-反应关系(P_(for non linear)<0.05)。野生型SF、MDA、ROS高于突变型(P<0.05),GPX4、GSH低于突变型(P<0.05)。不同PHLPP2突变类型、铁死亡指标下预后不良存在差异(P<0.05)。结论PHLPP2突变影响靶向联合化疗治疗EGFR+TP53共突变晚期LUAD临床疗效,且与铁死亡存在相关性。展开更多
Rwanda secured access to one of the world’s most lucrative agricultural markets this month when it finalised a trade protocol allowing fresh avocado exports to China,a deal that could fundamentally alter the trajecto...Rwanda secured access to one of the world’s most lucrative agricultural markets this month when it finalised a trade protocol allowing fresh avocado exports to China,a deal that could fundamentally alter the trajectory of the country’s trade.展开更多
Hyperpolarization of nuclear spins is crucial for advancing nuclear magnetic resonance and quantum information technologies,as nuclear spins typically exhibit extremely low polarization at room temperature due to thei...Hyperpolarization of nuclear spins is crucial for advancing nuclear magnetic resonance and quantum information technologies,as nuclear spins typically exhibit extremely low polarization at room temperature due to their small gyromagnetic ratios.A promising approach to achieving high nuclear spin polarization is transferring the polarization of electrons to nuclear spins.The nitrogen-vacancy(NV)center in diamond has emerged as a highly effective medium for this purpose,and various hyperpolarization protocols have been developed.Among these,the pulsed polarization(PulsePol)method has been extensively studied due to its robustness against static energy shifts of the electron spin.In this work,we present a novel polarization protocol and uncover a family of magic sequences for hyperpolarizing nuclear spins,with PulsePol emerging as a special case of our general approach.Notably,we demonstrate that some of these magic sequences exhibit significantly greater robustness compared to the PulsePol protocol in the presence of finite half𝜋pulse duration of the protocol,Rabi and detuning errors.This enhanced robustness positions our protocol as a more suitable candidate for hyper-polarizing nuclear spins species with large gyromagnetic ratios and also ensures better compatibility with high-efficiency readout techniques at high magnetic fields.Additionally,the generality of our protocol allows for its direct application to other solid-state quantum systems beyond the NV center.展开更多
目的:探讨在骨髓增生异常综合征(MDS)中TP53基因不同突变状态(野生型/突变型)对地西他滨(DAC)耐药性的影响,并筛选耐药相关调控基因。方法:选用2种TP53状态差异的MDS细胞:M-07e:野生型;SKM-1:突变型,用递增浓度(0、0.5、1、5和10μmol/L...目的:探讨在骨髓增生异常综合征(MDS)中TP53基因不同突变状态(野生型/突变型)对地西他滨(DAC)耐药性的影响,并筛选耐药相关调控基因。方法:选用2种TP53状态差异的MDS细胞:M-07e:野生型;SKM-1:突变型,用递增浓度(0、0.5、1、5和10μmol/L)的地西他滨干预0-72 h后,采用CCK-8法检测细胞活力。通过RNA-Seq转录组测序和甲基化组学分析,筛选与耐药相关的关键基因。结果:CCK-8实验结果显示DAC对M-07e和SKM-1细胞活力的抑制作用呈时间和剂量依赖性(SKM-1耐药性最强,IC_(50)=5μmol/L vs M-07e IC_(50)=0.5μmol/L,P<0.01)。基因表达分析结果显示,M-07e细胞经DAC处理后共鉴定到662个上调基因和452个下调基因;SKM-1细胞经DAC处理后共发现515个上调基因和73个下调基因。蛋白质组学检测显示:DAC处理的M-07e细胞中共鉴定117个上调蛋白和136个下调蛋白;DAC处理的SKM-1细胞中发现91个上调蛋白和46个下调蛋白。通过整合分析上调基因和蛋白表达谱,共筛选出181个候选基因。甲基化组学分析发现884个低甲基化基因中存在高敏感位点和高CpG密度区域,其中与上述181个候选基因存在交集的共31个基因,GO功能富集分析表明这31个基因主要参与细胞分化正调控、结合过程负调控以及细胞组分组织负调控等生物学过程。结论:TP53突变通过表观遗传重编程介导DAC耐药,靶向这些基因可能改善TP53突变型MDS的预后。展开更多
Airborne networks（ANs） are special types of ad hoc networks that can be used to enhance situational awareness, flight coordination and flight efficiency in civil and military aviation.Compared to ground networks, AN...Airborne networks（ANs） are special types of ad hoc networks that can be used to enhance situational awareness, flight coordination and flight efficiency in civil and military aviation.Compared to ground networks, ANs have some unique attributes including high node mobility, frequent topology changes, mechanical and aerodynamic constrains, strict safety requirements and harsh communication environment.Thus, the performance of conventional transmission control protocol（TCP） will be dramatically degraded in ANs.Aircraft commonly have two or more heterogeneous network interfaces which offer an opportunity to form multiple communication paths between any two nodes in ANs.To satisfy the communication requirements in ANs, we propose aeronautical multipath transport protocol（Aero MTP） for ANs, which effectively utilizes the available bandwidth and diversity provided by heterogeneous wireless paths.Aero MTP uses fountain codes as forward error correction（FEC） codes to recover from data loss and deploys a TCP-friendly rate-based congestion control mechanism for each path.Moreover, we design a packet allocation algorithm based on optimization to minimize the delivery time of blocks.The performance of Aero MTP is evaluated through OMNe T＋＋ simulations under a variety of test scenarios.Simulations demonstrate that Aero MTP is of great potential to be applied to ANs.展开更多
Cookies are considered a fundamental means of web application services for authenticating various Hypertext Transfer Protocol(HTTP)requests andmaintains the states of clients’information over the Internet.HTTP cookie...Cookies are considered a fundamental means of web application services for authenticating various Hypertext Transfer Protocol(HTTP)requests andmaintains the states of clients’information over the Internet.HTTP cookies are exploited to carry client patterns observed by a website.These client patterns facilitate the particular client’s future visit to the corresponding website.However,security and privacy are the primary concerns owing to the value of information over public channels and the storage of client information on the browser.Several protocols have been introduced that maintain HTTP cookies,but many of those fail to achieve the required security,or require a lot of resource overheads.In this article,we have introduced a lightweight Elliptic Curve Cryptographic(ECC)based protocol for authenticating client and server transactions to maintain the privacy and security of HTTP cookies.Our proposed protocol uses a secret key embedded within a cookie.The proposed protocol ismore efficient and lightweight than related protocols because of its reduced computation,storage,and communication costs.Moreover,the analysis presented in this paper confirms that proposed protocol resists various known attacks.展开更多
文摘目的探讨PHLPP2与EGFR+TP53共突变晚期肺腺癌(LUAD)患者靶向联合化疗疗效及与铁死亡的关系。方法回顾2018年8月至2023年8月的98例行靶向联合化疗治疗EGFR+TP53共突变晚期LUAD患者资料。分析PHLPP2突变情况,根据预后分为预后不良组(n=47)和预后良好组(n=51)。限制性立方样条(RCS)模型分析铁死亡指标与预后不良的剂量反应关系。比较不同PHLPP2突变类型下铁死亡指标水平,及其与预后不良的关系。结果PHLPP2突变率为30.61%,主要为错义突变和点突变。预后不良组血清铁(SF)、丙二醛(MDA)、活性氧(ROS)低于预后良好组(P<0.05),谷胱甘肽过氧化酶4(GPX4)、谷胱甘肽(GSH)、PHLPP2突变类型高于预后良好组(P<0.05)。预后不良风险与SF、GPX4、GSH、MDA和ROS均呈非线性剂量-反应关系(P_(for non linear)<0.05)。野生型SF、MDA、ROS高于突变型(P<0.05),GPX4、GSH低于突变型(P<0.05)。不同PHLPP2突变类型、铁死亡指标下预后不良存在差异(P<0.05)。结论PHLPP2突变影响靶向联合化疗治疗EGFR+TP53共突变晚期LUAD临床疗效,且与铁死亡存在相关性。
文摘Rwanda secured access to one of the world’s most lucrative agricultural markets this month when it finalised a trade protocol allowing fresh avocado exports to China,a deal that could fundamentally alter the trajectory of the country’s trade.
基金supported by the National Natural Science Foundation of China (Grant Nos.12475012,62461160263 for P.W.,and 62276171 for H.L.)Quantum Science and Technology-National Science and Technology Major Project of China (Project No.2023ZD0300600 for P.W.)+3 种基金Guangdong Provincial Quantum Science Strategic Initiative (Grant Nos.GDZX240-3009 and GDZX2303005 for P.W.)Guangdong Basic and Applied Basic Research Foundation (Grant No.2024-A1515011938 for H.L.)Shenzhen Fundamental ResearchGeneral Project (Grant No.JCYJ20240813141503005 for H.L.)the Talents Introduction Foundation of Beijing Normal University (Grant No.310432106 for P.W.)。
文摘Hyperpolarization of nuclear spins is crucial for advancing nuclear magnetic resonance and quantum information technologies,as nuclear spins typically exhibit extremely low polarization at room temperature due to their small gyromagnetic ratios.A promising approach to achieving high nuclear spin polarization is transferring the polarization of electrons to nuclear spins.The nitrogen-vacancy(NV)center in diamond has emerged as a highly effective medium for this purpose,and various hyperpolarization protocols have been developed.Among these,the pulsed polarization(PulsePol)method has been extensively studied due to its robustness against static energy shifts of the electron spin.In this work,we present a novel polarization protocol and uncover a family of magic sequences for hyperpolarizing nuclear spins,with PulsePol emerging as a special case of our general approach.Notably,we demonstrate that some of these magic sequences exhibit significantly greater robustness compared to the PulsePol protocol in the presence of finite half𝜋pulse duration of the protocol,Rabi and detuning errors.This enhanced robustness positions our protocol as a more suitable candidate for hyper-polarizing nuclear spins species with large gyromagnetic ratios and also ensures better compatibility with high-efficiency readout techniques at high magnetic fields.Additionally,the generality of our protocol allows for its direct application to other solid-state quantum systems beyond the NV center.
文摘目的:探讨在骨髓增生异常综合征(MDS)中TP53基因不同突变状态(野生型/突变型)对地西他滨(DAC)耐药性的影响,并筛选耐药相关调控基因。方法:选用2种TP53状态差异的MDS细胞:M-07e:野生型;SKM-1:突变型,用递增浓度(0、0.5、1、5和10μmol/L)的地西他滨干预0-72 h后,采用CCK-8法检测细胞活力。通过RNA-Seq转录组测序和甲基化组学分析,筛选与耐药相关的关键基因。结果:CCK-8实验结果显示DAC对M-07e和SKM-1细胞活力的抑制作用呈时间和剂量依赖性(SKM-1耐药性最强,IC_(50)=5μmol/L vs M-07e IC_(50)=0.5μmol/L,P<0.01)。基因表达分析结果显示,M-07e细胞经DAC处理后共鉴定到662个上调基因和452个下调基因;SKM-1细胞经DAC处理后共发现515个上调基因和73个下调基因。蛋白质组学检测显示:DAC处理的M-07e细胞中共鉴定117个上调蛋白和136个下调蛋白;DAC处理的SKM-1细胞中发现91个上调蛋白和46个下调蛋白。通过整合分析上调基因和蛋白表达谱,共筛选出181个候选基因。甲基化组学分析发现884个低甲基化基因中存在高敏感位点和高CpG密度区域,其中与上述181个候选基因存在交集的共31个基因,GO功能富集分析表明这31个基因主要参与细胞分化正调控、结合过程负调控以及细胞组分组织负调控等生物学过程。结论:TP53突变通过表观遗传重编程介导DAC耐药,靶向这些基因可能改善TP53突变型MDS的预后。
文摘Airborne networks（ANs） are special types of ad hoc networks that can be used to enhance situational awareness, flight coordination and flight efficiency in civil and military aviation.Compared to ground networks, ANs have some unique attributes including high node mobility, frequent topology changes, mechanical and aerodynamic constrains, strict safety requirements and harsh communication environment.Thus, the performance of conventional transmission control protocol（TCP） will be dramatically degraded in ANs.Aircraft commonly have two or more heterogeneous network interfaces which offer an opportunity to form multiple communication paths between any two nodes in ANs.To satisfy the communication requirements in ANs, we propose aeronautical multipath transport protocol（Aero MTP） for ANs, which effectively utilizes the available bandwidth and diversity provided by heterogeneous wireless paths.Aero MTP uses fountain codes as forward error correction（FEC） codes to recover from data loss and deploys a TCP-friendly rate-based congestion control mechanism for each path.Moreover, we design a packet allocation algorithm based on optimization to minimize the delivery time of blocks.The performance of Aero MTP is evaluated through OMNe T＋＋ simulations under a variety of test scenarios.Simulations demonstrate that Aero MTP is of great potential to be applied to ANs.
基金support from Abu Dhabi University’s Office of Research and Sponsored Programs Grant Number:19300810.
文摘Cookies are considered a fundamental means of web application services for authenticating various Hypertext Transfer Protocol(HTTP)requests andmaintains the states of clients’information over the Internet.HTTP cookies are exploited to carry client patterns observed by a website.These client patterns facilitate the particular client’s future visit to the corresponding website.However,security and privacy are the primary concerns owing to the value of information over public channels and the storage of client information on the browser.Several protocols have been introduced that maintain HTTP cookies,but many of those fail to achieve the required security,or require a lot of resource overheads.In this article,we have introduced a lightweight Elliptic Curve Cryptographic(ECC)based protocol for authenticating client and server transactions to maintain the privacy and security of HTTP cookies.Our proposed protocol uses a secret key embedded within a cookie.The proposed protocol ismore efficient and lightweight than related protocols because of its reduced computation,storage,and communication costs.Moreover,the analysis presented in this paper confirms that proposed protocol resists various known attacks.
