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8篇 您的检索式:作者名="Linjun Zhao"
    题名 作者 年代 出处 被引量
1Brominated dioxins and furans in a cement kiln co-processing municipal solid waste显示文摘A field study and theoretical calculations were performed to clarify the levels, profiles, and distributions of polybrominated dibenzo-p-dioxins and dibenzofurans(PBDD/Fs) in a cement kiln co-processing solid waste, with a focus on the PBDF formation mechanism.The raw materials contributed greatly to input of PBDD/Fs into the cement kiln. The PBDD/F concentrations in the raw materials were much higher than those in particle samples from different process stages in the cement kiln. The PBDD/F concentrations in the clinkers were1.40% of the concentrations in the raw materials, which indicated that the high destruction efficiencies for PBDD/Fs by cement kiln. PBDD/F distribution patterns in particle samples collected from different process stages indicated the cement kiln backend was a major site for PBDD/F formation. PBDFs with high levels of halogenation, such as heptabrominated furans(Hp BDF), were the dominant contributors to the total PBDD/F concentrations and accounted for 42%–73% of the total PBDD/F concentrations in the particle samples. Our results showed that co-processing of municipal solid waste in a cement kiln may influence the congener profile of PBDD/Fs, especially for the higher halogenated PBDD fraction. In addition, there were significant correlations between the decabromodiphenyl ether and heptabrominated furan concentrations, which is an indicator of transformation from polybrominated diphenyl ethers to PBDD/Fs. Theoretical calculations were performed and demonstrated that elimination of HBr and Br_2 from polybrominated diphenyl ethers were the dominant formation pathways for PBDD/Fs. These pathways differed from that for polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs).Lili Yang Yuyang Zhao Miwei Shi Minghui Zheng Yang Xu Cui Li Yuanping Yang Linjun Qin Guorui Liu 2019Journal of Environmental Sciences2019,31,5:5
2Injectable self-healing hydrogel with siRNA delivery property for sustained STING silencing and enhanced therapy of intervertebral disc degeneration显示文摘Inflammatory responses of nucleus pulposus(NP)can induce imbalanced anabolism and catabolism of extracellular matrix,and the cytosolic dsDNA accumulation and STING-NF-κB pathway activation found in NP inflammation are considered as fairly important cause of intervertebral disc(IVD)degeneration.Herein,we constructed a siSTING delivery hydrogel of aldehyde hyaluronic acid(HA-CHO)and poly(amidoamine)PAMAM/siRNA complex to intervene the abnormal STING signal for IVD degeneration treatment,where the formation of dynamic Schiff base bonds in the system(siSTING@HPgel)was able to overcome the shortcomings such as low cellular uptake,short half-life,and rapid degradation of siRNA-based strategy.PAMAM not only formed complexes with siRNA to promote siRNA transfection,but also served as dynamic crosslinker to construct hydrogel,and the injectable and self-healing hydrogel efficiently and steadily silenced STING expression in NP cells.Finally,the siSTING@HPgel significantly eased IVD inflammation and slowed IVD degeneration by prolonging STING knockdown in puncture-induced IVD degeneration rat model,revealing that STING pathway was a therapeutic target for IVD degeneration and such novel hydrogel had great potential for being applied to many other diseases for gene delivery.Jiaxin Chen Haifeng Zhu Yutao Zhu Chenchen Zhao Shengyu Wang Yixin Zheng Ziang Xie Yang Jin Honghai Song Linjun Yang Jin Zhang Jiayong Dai Zhijun Hu Huaiyu Wang 2022Bioactive Materials2022,7,3:2
3Fractal Uniform Circular Arrays Based Multi-Orbital-Angular-Momentum-Mode Multiplexing Vortex Radio MIMO显示文摘A radio wave driven by Orbital angular momentum(OAM) is called a vortex radio and has a helical wavefront. The differential helical wavefronts of several vortex radios are closely related to their topological charges or mode numbers. In physics, two or more radio waves with different mode numbers are orthogonal to their azimuth angles. With the development of radio communication technologies, some researchers have been exploring the OAM-based multi-mode multiplexing(multi-OAM-mode multiplexing) technologies in order to enhance the channel spectrum efficiency(SE) of a radio communication system by using the orthogonal properties of vortex radios. After reviewing the reported researches of OAM-based radio communication, we find that some breakthroughs have been made in the combination of OAM and traditional Multi-Input-Multi-Output(MIMO). However, the existing technology is not sufficient to support OAM-based MIMO system to achieve maximum the channel SE. To maximize the spectrum efficiency of OAM-based MIMO system, we present a reused multi-OAM-mode multiplexing vortex radio(RMMVR) MIMO system, which is based on fractal uniform cir-cular arrays(UCAs). The scheme described in this study can effectively combine multiOAM-mode multiplexing with MIMO spatial multiplexing. First, we present the generation of RMMVR MIMO signals. Second, under line-of-sight(LOS) propagation conditions, we derive the channels of the RMMVR MIMO system. Third, we separate the RMMVR MIMO signals using an orthogonal separation method based on full azimuth sampling. Finally, we introduce the method for calculating the channel capacity of the RMMVR MIMO system. Theoretical analysis shows that the scheme proposed in this study is feasible. Moreover, the simulation results show that spatial and mode diversity are obtained by exploiting fractal UCAs. However, to enhance the channel SE of RMMVR MIMO system, an interference cancellation method needs to be introduced for zero-mode vortex radios, and some methods of multi-OAM-mode beams convergence and mode power optimization strategy should be introduced in the future.Linjun Zhao Hailin Zhang Wenchi Cheng 2018China Communications2018,15,9:2
4Emerging phagocytosis checkpoints in cancer immunotherapy显示文摘Cancer immunotherapy,mainly including immune checkpoints-targeted therapy and the adoptive transfer of engineered immune cells,has revolutionized the oncology landscape as it utilizes patients’own immune systems in combating the cancer cells.Cancer cells escape immune surveillance by hijacking the corresponding inhibitory pathways via overexpressing checkpoint genes.Phagocytosis checkpoints,such as CD47,CD24,MHC-I,PD-L1,STC-1 and GD2,have emerged as essential checkpoints for cancer immunotherapy by functioning as“don’t eat me”signals or interacting with“eat me”signals to suppress immune responses.Phagocytosis checkpoints link innate immunity and adaptive immunity in cancer immunotherapy.Genetic ablation of these phagocytosis checkpoints,as well as blockade of their signaling pathways,robustly augments phagocytosis and reduces tumor size.Among all phagocytosis checkpoints,CD47 is the most thoroughly studied and has emerged as a rising star among targets for cancer treatment.CD47-targeting antibodies and inhibitors have been investigated in various preclinical and clinical trials.However,anemia and thrombocytopenia appear to be formidable challenges since CD47 is ubiquitously expressed on erythrocytes.Here,we review the reported phagocytosis checkpoints by discussing their mechanisms and functions in cancer immunotherapy,highlight clinical progress in targeting these checkpoints and discuss challenges and potential solutions to smooth the way for combination immunotherapeutic strategies that involve both innate and adaptive immune responses.Yu’e Liu Yanjin Wang Yanrong Yang Linjun Weng Qi Wu Jin Zhang Pengcheng Zhao Lan Fang Yufeng Shi Ping Wang 2023Signal Transduction and Targeted Therapy2023,8,4:1
5Transcriptome-wide profiling of RNA N^(4)-cytidine acetylation in Arabidopsis thaliana and Oryza sativa显示文摘Acetylation of N^(4)-cytidine(ac^(4)C)has recently been discovered as a novel modification of mRNA.RNA ac^(4)C modification has been shown to be a key regulator of RNA stability,RNA translation,and the thermal stress response.However,its existence in eukaryotic mRNAs is still controversial.In plants,the existence,distribution pattern,and potential function of RNA ac^(4)C modification are largely unknown.Here we report the presence of ac^(4)C in the mRNAs of both Arabidopsis thaliana and rice(Oryza sativa).By comparing two ac^(4)C sequencing methods,we found that RNA immunoprecipitation and sequencing(acRIP-seq),but not ac^(4)C sequencing,was suitable for plant RNA ac^(4)C sequencing.We present transcriptome-wide atlases of RNA ac^(4)C modification in A.thaliana and rice mRNAs obtained by acRIP-seq.Analysis of the distribution of RNA ac^(4)C modifications showed that ac^(4)C is enriched near translation start sites in rice mRNAs and near translation start sites and translation end sites in Arabidopsis mRNAs.The RNA ac^(4)C modification level is positively correlated with RNA half-life and the number of splicing variants.Similar to that in mammals,the translation efficiency of ac^(4)C target genes is significantly higher than that of other genes.Our in vitro translation results confirmed that RNA ac^(4)C modification enhances translation efficiency.We also found that RNA ac^(4)C modification is negatively correlated with RNA structure.These results suggest that ac^(4)C is a conserved mRNA modification in plants that contributes to RNA stability,splicing,translation,and secondary structure formation.Bin Li Donghao Li Linjun Cai Qiting Zhou Cong Liu Jianzhong Lin Yixing Li Xiaoying Zhao Li Li Xuanming Liu Chongsheng He 2023Molecular Plant2023,16,6:0
6SET1A催化YAP甲基化修饰调控YAP细胞核转运和促进肿瘤发生显示文摘文章简介YAP作为Hippo信号通路主要效应因子之一,在Hippo通路受抑的条件下,从细胞质转运至细胞核调控基因表达和促进肿瘤发生。虽然YAP锚定在细胞质中的调控机制已经被广泛研究,但是YAP激活后入核在细胞核中持续积累的分子机制并不十分清楚。方兰 滕鸿琦 王益林 廖光红 Linjun Weng Yaxu Li Xinbo Wang Jiali Jin Chenchen Jiao Lei Chen Xiaoping Peng Jiayu Chen Yongzhi Yang Houqin Fang Dongyan Han Cheng Li Xueling Jin Shihao Zhang Zhongchen Liu Min Liu Qing Wei Lujian Liao Xin Ge Bin Zhao Dawang Zhou HuanLong Qin Jun Zhou 王平 2019科学新闻2019,0,2:0
7Gamma knife treatment for refractory epilepsy in seizure focus localized by positron emission tomography/CT显示文摘A total of 80 patients with refractory epilepsy were recruited from the Inner Mongolia Medical College Affiliated Hospital. The foci of 60% of the patients could be positioned using a combined positron emission tomography/CT imaging modality. Hyper- and hypometabolism foci were examined as part of this study. Patients who had abnormal metabolism in positron emission tomography/CT imaging were divided into intermittent-phase group and the seizure-phase group. The intermittent-phase group was further divided into a single-focus group and a multiple-foci group according to the number of seizure foci detected by imaging. Following gamma knife treatment, seizure frequency was significantly lower in the intermittent-phase group and the seizure-phase group. Wieser's classification reached Grade Ⅰ or Ⅱ in nearly 40% of patients. Seizure frequency was significantly lower following treatment, but Wieser's classification score was significantly higher in the seizure-phase group compared with the intermittent-phase group. Seizure frequency was significantly lower following treatment in the single-focus group, but Wieser's classification score was significantly higher in the single-focus group as compared with the multiple-foci group.Xia Bai Xuemei Wang Hongwei Wang Shigang Zhao Xiaodong Han Linjun Hao Xiangcheng Wang 2012Neural Regeneration Research2012,7,36:0
8Functionalization of Magnetic Titanium Dioxide for Targeted Drug Delivery and UV-induced Release显示文摘Magnetic titanium dioxide core-shell nanoparticles(Fe3O4@TiO2 NPs) were synthesized as particles withappropriate size for intravenous injection. They subsequently were functionalized with p-aminothiophenol(PATP) tofacilitate the covalent attachment of target drugs through azo coupling reaction, which can be universally observed ina variety of drugs containing phenols, anilines, and imidazoles. The proposed drug nanocarrier was designed to po-ssess the ability to release drugs upon UV irradiation because of the photocatalytic property of the TiO2 shells. All theresults indicate the potential application of the Fe3O4@TiO2 NPs in targeted drug delivery with greater chemical sta-bility and universality.CAI Linjun LI Junbo WANG Shipeng ZHAO Mengzhe ZHAO Bing JIANG Chunlai KONG Wei 2017Chemical Research in Chinese Universities2017,33,2:0
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