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聚集诱导发射光笼分子的设计合成及原位光激活成像研究
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作者 赵玉强 张霞 +2 位作者 杨芸如 朱立平 周莹 《化学学报》 SCIE CAS CSCD 北大核心 2024年第3期265-273,共9页
通过将1,2,4,5-四氮嗪基团引入到聚集诱导发射(AIE)荧光团上,制备了两个光激活的荧光小分子化合物TPA-Tz1和TPA-Tz2.光激活后, TPA-Tz1和TPA-Tz2的荧光强度分别增强了167倍和100倍.光激活的原理是光照导致四氮嗪基团转化为氰基,从而恢... 通过将1,2,4,5-四氮嗪基团引入到聚集诱导发射(AIE)荧光团上,制备了两个光激活的荧光小分子化合物TPA-Tz1和TPA-Tz2.光激活后, TPA-Tz1和TPA-Tz2的荧光强度分别增强了167倍和100倍.光激活的原理是光照导致四氮嗪基团转化为氰基,从而恢复荧光发射.通过密度泛函理论(DFT)计算,TPA-Tz1的猝灭机理为能量转移至暗态(ETDS). TPA-Tz1的激活产物TPA-CN1具有独特的AIE特点,其聚集态分子间发生的电荷转移是导致聚集态荧光蓝移的主要原因.通过溶剂挥发法获得的TPA-Tz1晶体结构揭示了其内部复杂的堆叠结构,氢键和C—H…π作用代替π-π相互作用是同时维持晶格稳定和AIE特性的重要原因.TPA-Tz1具有良好的生物相容性,其最高的细胞抑制率仅有25.3%.因此, TPA-Tz1在细胞水平和多细胞生物秀丽隐杆线虫体内实现了原位的光激活成像. 展开更多
关键词 光笼 聚集诱导发光 密度泛函理论 光激活荧光 荧光成像
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Single-dose AAV-based vaccine induces a high level of neutralizing antibodies against SARS-CoV-2 in rhesus macaques
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作者 Dali Tong Mei Zhang +32 位作者 yunru yang Han Xia Haiyang Tong Huajun Zhang Weihong Zeng Muziying Liu Yan Wu Huan Ma Xue Hu Weiyong Liu Yuan Cai Yanfeng Yao Yichuan Yao Kunpeng Liu Shifang Shan Yajuan Li Ge Gao Weiwei Guo Yun Peng Shaohong Chen Juhong Rao Jiaxuan Zhao Juan Min Qingjun Zhu Yanmin Zheng Lianxin Liu Chao Shan Kai Zhong Zilong Qiu Tengchuan Jin Sandra Chiu Zhiming Yuan Tian Xue 《Protein & Cell》 SCIE CSCD 2023年第1期69-73,共5页
Dear Editor,Coronavirus disease 2019(COVID-19)is a highly infectious respiratory disease that continues to pose a serious global public health emergency.The disease shows a high infection rate,long incubation period,a... Dear Editor,Coronavirus disease 2019(COVID-19)is a highly infectious respiratory disease that continues to pose a serious global public health emergency.The disease shows a high infection rate,long incubation period,and rapidly emerging variants,which have led to its rapid spread worldwide(Krammer 2020).Many vaccines have been developed for the control of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the virus responsible for COVID-19,including vaccines based on messenger RNA(mRNA)(Polack et al.2020),viral vectors(Zhu et al.2020),recombinant proteins(Yang et al.2020),and inactivated SARS-CoV-2(Zhang et al.2021). 展开更多
关键词 RESPIRATORY acute
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Decline of SARS-CoV-2-specific IgG,IgM and IgA in convalescent COVID-19 patients within 100 days after hospital discharge
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作者 Huan Ma Dan Zhao +7 位作者 Weihong Zeng yunru yang Xiaowen Hu Peigen Zhou Jianping Weng Linzhao Cheng Xueying Zheng Tengchuan Jin 《Science China(Life Sciences)》 SCIE CAS CSCD 2021年第3期482-485,共4页
Dear editor,The 2019 novel coronavirus(later renamed as SARS-CoV-2 in February 2020)infected over 12 million people globally by early July 2020,causing mild to severe COVID-19 in millions.Monitoring the levels of anti... Dear editor,The 2019 novel coronavirus(later renamed as SARS-CoV-2 in February 2020)infected over 12 million people globally by early July 2020,causing mild to severe COVID-19 in millions.Monitoring the levels of antibodies such as immunoglobin(Ig)G,M and A that are specific to SARS-CoV-2 and present in the blood provides not only an alternative method for diagnosing SARS-CoV-2 infection(including asymptomatic carriers),but also a simple way to monitor immune responses in convalescent patients or after vaccination.A high and persistent level of antibodies specific to SARS-CoV-2,especially those that can bind to and neutralize the virus,would be a strong indication that an immunized host could resist to SRAS-CoV-2 infection.Currently,there are no effective drugs to specifically prevent or cure SARS-CoV-2 infection;therefore,host immune responses and antibody-based therapeutics will continue to play important roles in combating and later preventing COVID-19. 展开更多
关键词 PATIENTS DRUGS EDITOR
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3-dose of RBD vaccine is sufficient to elicit a long-lasting memory response against SARS-CoV-2 infection
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作者 Mengqing Cong yunru yang +7 位作者 Haiyang Tong Ajmeri Sultana Shimu Baolong Wang Qing Li Fengyin Li Yi yang Tengchuan Jin Bofeng Li 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2022年第4期967-969,共3页
Dear Editor,The spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)led to a global pandemic with 260 million infected people.A variety of vaccines,including the mRNA and recombinant vaccines,were dev... Dear Editor,The spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)led to a global pandemic with 260 million infected people.A variety of vaccines,including the mRNA and recombinant vaccines,were developed to prevent the spread of the disease.1,2 There is an urgent need for testing the vaccine-induced long-term memory response based on the immunological principles and identifying the optimal combination of dose and injection manner to provide important information for clinical application. 展开更多
关键词 VACCINE acute RESPIRATORY
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Characterization of SARS-CoV-2-specific antibodies in COVID-19 patients reveals highly potent neutralizing IgA
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作者 Weihong Zeng Huan Ma +7 位作者 Chengchao Ding yunru yang Yong Sun Xiaoxue Huang Weihuang He Yan Xiang Yong Gao Tengchuan Jin 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2021年第2期254-256,共3页
Dear Editor,The coronavirus disease 2019(COVID-19),caused by the Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2),is an ongoing threat to public health.Due to the presence of neutralizing antibodies in conv... Dear Editor,The coronavirus disease 2019(COVID-19),caused by the Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2),is an ongoing threat to public health.Due to the presence of neutralizing antibodies in convalescent patients,convalescent plasma transfusion has been tested as a promising therapy for severe COVID-19 patients.12 We and others previously found a surprisingly early serum lgA antibody response in the COVID-19 patients.However,the relative contribution of the lgA antibody towards virus neutralization with respect to other antibody isotypes is unknown. 展开更多
关键词 PATIENTS ANTIBODIES TRANSFUSION
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