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Multiscale petrographic heterogeneity and their implications for the nanoporous system of the Wufeng-Longmaxi shales in Jiaoshiba area, Southeast China: Response to depositional-diagenetic process 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2020, 132 (7-8) : 1704-1721
作者:  Wang, Yuxuan;  Xu, Shang;  Hao, Fang;  Zhang, Baiqiao;  Shu, Zhiguo;  Gou, Qiyang;  Lu, Yangbo;  Cong, Fuyun
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
Changes of Emission Sources to Nitrate Aerosols in Beijing After the Clean Air Actions: Evidence From Dual Isotope Compositions 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (12)
作者:  Fan, Mei-Yi;  Zhang, Yan-Lin;  Lin, Yu-Chi;  Cao, Fang;  Zhao, Zhu-Yu;  Sun, Yele;  Qiu, Yanmei;  Fu, Pingqing;  Wang, Yuxuan
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
nitrate aerosols  haze events  stable isotopes  formation mechanism  source apportionment  
Carbenium ion-mediated oligomerization of methylglyoxal for secondary organic aerosol formation 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13294-13299
作者:  Ji, Yuemen;  Shi, Qiuju;  Li, Yixin;  An, Taicheng;  Zheng, Jun;  Peng, Jianfei;  Gao, Yanpeng;  Chen, Jiangyao;  Li, Guiying;  Wang, Yuan;  Zhang, Fang;  Zhang, Annie L.;  Zhao, Jiayun;  Molina, Mario J.;  Zhang, Renyi
收藏  |  浏览/下载:15/0  |  提交时间:2020/06/09
secondary organic aerosol  aqueous  oligomerization  brown carbon  cationic  
Molecular architecture of lineage allocation and tissue organization in early mouse embryo (vol 572, 528, 2019) 期刊论文
NATURE, 2020, 577 (7791) : E6-E6
作者:  Peng, Guangdun;  Suo, Shengbao;  Cui, Guizhong;  Yu, Fang;  Wang, Ran;  Chen, Jun;  Chen, Shirui;  Liu, Zhiwen;  Chen, Guoyu;  Qian, Yun;  Tam, Patrick P. L.;  Han, Jing-Dong J.;  Jing, Naihe
收藏  |  浏览/下载:15/0  |  提交时间:2020/07/03
CAN THE WORLD MAKE ENOUGH CORONAVIRUS VACCINE? 期刊论文
NATURE, 2020, 580 (7805) : 578-580
作者:  Zhao, Chuangqi;  Zhang, Pengchao;  Zhou, Jiajia;  Qi, Shuanhu;  Yamauchi, Yoshihiro;  Shi, Ruirui;  Fang, Ruochen;  Ishida, Yasuhiro;  Wang, Shutao;  Tomsia, Antoni P.;  Liu, Mingjie;  Jiang, Lei
收藏  |  浏览/下载:13/0  |  提交时间:2020/07/03

Researchers warn production constraints and hoarding could limit SARS-CoV-2 vaccine supplies.


Researchers warn production constraints and hoarding could limit SARS-CoV-2 vaccine supplies.


  
Chemical multi-fingerprinting of exogenous ultrafine particles in human serum and pleural effusion 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Lu, Dawei;  Luo, Qian;  Chen, Rui;  Zhuansun, Yongxun;  Jiang, Jie;  Wang, Weichao;  Yang, Xuezhi;  Zhang, Luyao;  Liu, Xiaolei;  Li, Fang;  Liu, Qian;  Jiang, Guibin
收藏  |  浏览/下载:8/0  |  提交时间:2020/05/25
Effects of Groundwater Pumping on Ground Surface Temperature: A Regional Modeling Study in the North China Plain 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (9)
作者:  Yang, Chen;  Li, Hong-Yi;  Fang, Yilin;  Cui, Chixiao;  Wang, Tianye;  Zheng, Chunmiao;  Leung, L. Ruby;  Maxwell, Reed M.;  Zhang, You-Kuan;  Yang, Xiaofan
收藏  |  浏览/下载:12/0  |  提交时间:2020/07/02
the North China Plain  groundwater pumping  ground surface temperature  integrated hydrologic modeling  ParFlow  CLM  
A dominant autoinflammatory disease caused by non-cleavable variants of RIPK1 期刊论文
NATURE, 2020, 577 (7788) : 109-+
作者:  Tao, Panfeng;  Sun, Jinqiao;  Wu, Zheming;  Wang, Shihao;  Wang, Jun;  Li, Wanjin;  Pan, Heling;  Bai, Renkui;  Zhang, Jiahui;  Wang, Ying;  Lee, Pui Y.;  Ying, Wenjing;  Zhou, Qinhua;  Hou, Jia;  Wang, Wenjie;  Sun, Bijun;  Yang, Mi;  Liu, Danru;  Fang, Ran;  Han, Huan;  Yang, Zhaohui;  Huang, Xin;  Li, Haibo;  Deuitch, Natalie;  Zhang, Yuan;  Dissanayake, Dilan;  Haude, Katrina;  McWalter, Kirsty;  Roadhouse, Chelsea;  MacKenzie, Jennifer J.;  Laxer, Ronald M.;  Aksentijevich, Ivona;  Yu, Xiaomin;  Wang, Xiaochuan;  Yuan, Junying;  Zhou, Qing
收藏  |  浏览/下载:26/0  |  提交时间:2020/07/03

Activation of RIPK1 controls TNF-mediated apoptosis, necroptosis and inflammatory pathways(1). Cleavage of human and mouse RIPK1 after residues D324 and D325, respectively, by caspase-8 separates the RIPK1 kinase domain from the intermediate and death domains. The D325A mutation in mouse RIPK1 leads to embryonic lethality during mouse development(2,3). However, the functional importance of blocking caspase-8-mediated cleavage of RIPK1 on RIPK1 activation in humans is unknown. Here we identify two families with variants in RIPK1 (D324V and D324H) that lead to distinct symptoms of recurrent fevers and lymphadenopathy in an autosomaldominant manner. Impaired cleavage of RIPK1 D324 variants by caspase-8 sensitized patients'  peripheral blood mononuclear cells to RIPK1 activation, apoptosis and necroptosis induced by TNF. The patients showed strong RIPK1-dependent activation of inflammatory signalling pathways and overproduction of inflammatory cytokines and chemokines compared with unaffected controls. Furthermore, we show that expression of the RIPK1 mutants D325V or D325H in mouse embryonic fibroblasts confers not only increased sensitivity to RIPK1 activation-mediated apoptosis and necroptosis, but also induction of pro-inflammatory cytokines such as IL-6 and TNF. By contrast, patient-derived fibroblasts showed reduced expression of RIPK1 and downregulated production of reactive oxygen species, resulting in resistance to necroptosis and ferroptosis. Together, these data suggest that human non-cleavable RIPK1 variants promote activation of RIPK1, and lead to an autoinflammatory disease characterized by hypersensitivity to apoptosis and necroptosis and increased inflammatory response in peripheral blood mononuclear cells, as well as a compensatory mechanism to protect against several pro-death stimuli in fibroblasts.


  
A lower X-gate in TASK channels traps inhibitors within the vestibule 期刊论文
NATURE, 2020
作者:  Chen, Tao;  Nomura, Kinya;  Wang, Xiaolin;  Sohrabi, Reza;  Xu, Jin;  Yao, Lingya;  Paasch, Bradley C.;  Ma, Li;  Kremer, James;  Cheng, Yuti;  Zhang, Li;  Wang, Nian;  Wang, Ertao;  Xin, Xiu-Fang;  He, Sheng Yang
收藏  |  浏览/下载:35/0  |  提交时间:2020/07/03

TWIK-related acid-sensitive potassium (TASK) channels-members of the two pore domain potassium (K-2P) channel family-are found in neurons(1), cardiomyocytes(2-4) and vascular smooth muscle cells(5), where they are involved in the regulation of heart rate(6), pulmonary artery tone(5,7), sleep/wake cycles(8) and responses to volatile anaesthetics(8-11). K-2P channels regulate the resting membrane potential, providing background K+ currents controlled by numerous physiological stimuli(12-15). Unlike other K-2P channels, TASK channels are able to bind inhibitors with high affinity, exceptional selectivity and very slow compound washout rates. As such, these channels are attractive drug targets, and TASK-1 inhibitors are currently in clinical trials for obstructive sleep apnoea and atrial fibrillation(16). In general, potassium channels have an intramembrane vestibule with a selectivity filter situated above and a gate with four parallel helices located below  however, the K-2P channels studied so far all lack a lower gate. Here we present the X-ray crystal structure of TASK-1, and show that it contains a lower gate-which we designate as an '  X-gate'  -created by interaction of the two crossed C-terminal M4 transmembrane helices at the vestibule entrance. This structure is formed by six residues ((VLRFMT248)-V-243) that are essential for responses to volatile anaesthetics(10), neurotransmitters(13) and G-protein-coupled receptors(13). Mutations within the X-gate and the surrounding regions markedly affect both the channel-open probability and the activation of the channel by anaesthetics. Structures of TASK-1 bound to two high-affinity inhibitors show that both compounds bind below the selectivity filter and are trapped in the vestibule by the X-gate, which explains their exceptionally low washout rates. The presence of the X-gate in TASK channels explains many aspects of their physiological and pharmacological behaviour, which will be beneficial for the future development and optimization of TASK modulators for the treatment of heart, lung and sleep disorders.


The X-ray crystal structure of the potassium channel TASK-1 reveals the presence of an X-gate, which traps small-molecule inhibitors in the intramembrane vestibule and explains their low washout rates from the channel.


  
Very regular high-frequency pulsation modes in young intermediate-mass stars 期刊论文
NATURE, 2020, 581 (7807) : 147-+
作者:  Zhao, Chuangqi;  Zhang, Pengchao;  Zhou, Jiajia;  Qi, Shuanhu;  Yamauchi, Yoshihiro;  Shi, Ruirui;  Fang, Ruochen;  Ishida, Yasuhiro;  Wang, Shutao;  Tomsia, Antoni P.;  Jiang, Lei;  Liu, Mingjie
收藏  |  浏览/下载:10/0  |  提交时间:2020/07/03

Asteroseismology probes the internal structures of stars by using their natural pulsation frequencies(1). It relies on identifying sequences of pulsation modes that can be compared with theoretical models, which has been done successfully for many classes of pulsators, including low-mass solar-type stars(2), red giants(3), high-mass stars(4) and white dwarfs(5). However, a large group of pulsating stars of intermediate mass-the so-called delta Scuti stars-have rich pulsation spectra for which systematic mode identification has not hitherto been possible(6,7). This arises because only a seemingly random subset of possible modes are excited and because rapid rotation tends to spoil regular patterns(8-10). Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, which enables definitive mode identification. The space motions of some of these stars indicate that they are members of known associations of young stars, as confirmed by modelling of their pulsation spectra.


The pulsation spectra of intermediate-mass stars (so-called delta Scuti stars) have been challenging to analyse, but new observations of 60 such stars reveal remarkably regular sequences of high-frequency pulsation modes.