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3篇 您的检索式:作者名="Lanjun Guo"
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10.35%THz pulse conversion efficiency achieved by Ti:sapphire femtosecond laser filamentation in argon at 1 kHz repetition rate显示文摘In this study,an optical setup for generating terahertz(THz)pulses through a two-color femtosecond laser filament was carefully designed to achieve a precise overlap of two-color laser pulses in space and time.β-barium borate(BBO),α-BBO,and a dual-wavelength plate were used to compensate the phase delay of the two-color lasers.Tilting ofα-BBO could further realize the precise spatial overlap of the two beams by counteracting the walk-off effect.The maximum out-put THz pulse energy reached 21μJ in argon gas when using a commercial Ti:sapphire laser with a pulse energy of 6 mJ at a 1 kHz repetition rate.The corresponding conversion efficiency exceeded 0.35%.Zhiqiang Yu Nan Zhang Jianxin Wang Zijie Dai Cheng Gong Lie Lin Lanjun Guo Weiwei Liu 2022Opto-Electronic Advances2022,5,9:2
2Anti-Correlated Plasma and THz Pulse Generation during Two-Color Laser Filamentation in Air显示文摘The THz generation efficiency and the plasma density generated by a filament in air have been found anti-correlated when pumped by 800 nm+1600 nm two-color laser field.The plasma density near zero delay of two laser pulses has a minimum value,which is opposite to the trend of THz generation eficiency and contradicts common sense.The lower plasma density cannot be explained by the static tunneling model according to the conventional photocurrent model,but it might be attributed to the electron trapping by the excited states of nitrogen molecule.The present work also clarifies the dominant role of the drifting velocity accelerated by the two-color laser field during the THz pulse generation process.The results promote our understanding on the optimization of the THz generation efficiency by the two-color laser filamentation.Zhiqiang Yu Lu Sun Nan Zhang Jianxin Wang Pengfei Qi Lanjun Guo Quan Sun Weiwei Liu Hiroaki Misawa 2022Ultrafast Science2022,,6:2
3SUMOylation-triggered ALIX activation modulates extracellular vesicles circTLCD4-RWDD3 to promote lymphatic metastasis of non-small cell lung cancer显示文摘Lymph node(LN)metastasis is one of the predominant metastatic routes of non-small cell lung cancer(NSCLC)and is considered as a leading cause for the unsatisfactory prognosis of patients.Although lymphangiogenesis is well-recognized as a crucial process in mediating LN metastasis,the regulatory mechanism involving lymphangiogenesis and LN metastasis in NSCLC remains unclear.In this study,we employed high-throughput sequencing to identify a novel circular RNA(circRNA),circTLCD4-RWDD3,which was significantly upregulated in extracellular vesicles(EVs)from LN metastatic NSCLC and was positively associated with deteriorated OS and DFS of patients with NSCLC from multicenter clinical cohort.Downregulating the expression of EV-packaged circTLCD4-RWDD3 inhibited lymphangiogenesis and LN metastasis of NSCLC both in vitro and in vivo.Mechanically,circTLCD4-RWDD3 physically interacted with hnRNPA2B1 and mediated the SUMO2 modification at K108 residue of hnRNPA2B1 by upregulating UBC9.Subsequently,circTLCD4-RWDD3-induced SUMOylated hnRNPA2B1 was recognized by the SUMO interaction motif(SIM)of ALIX and activated ALIX to recruit ESCRT-III,thereby facilitating the sorting of circTLCD4-RWDD3 into NSCLC cell-derived EVs.Moreover,EV-packaged circTLCD4-RWDD3 was internalized by lymphatic endothelial cells to activate the transcription of PROX1,resulting in the lymphangiogenesis and LN metastasis of NSCLC.Importantly,blocking EV-mediated transmission of circTLCD4-RWDD3 via mutating SIM in ALIX or K108 residue of hnRNPA2B1 inhibited the lymphangiogenesis and LN metastasis of NSCLC in vivo.Our findings reveal a precise mechanism underlying SUMOylated hnRNPA2B1-induced EV packaging of circTLCD4-RWDD3 in facilitating LN metastasis of NSCLC,suggesting that EV-packaged circTLCD4-RWDD3 could be a potential therapeutic target against LN metastatic NSCLC.Xiayao Diao Chao Guo Hanhao Zheng Ke Zhao Yuming Luo Mingjie An Yan Lin Jiancheng Chen Yuanlong Li Yuting Li Xuehan Gao Jiaqi Zhang Mengxin Zhou Wenliang Bai Lei Liu Guige Wang Lanjun Zhang Xiaotian He Rusi Zhang Zhihua Li Changhao Chen Shanqing Li 2023Signal Transduction and Targeted Therapy2023,8,12:0
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