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Two contrasting Neoarchean metavolcanic rock suites in eastern Hebei and their geodynamic implications for the northern North China Craton

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GONDWANA RESEARCH 2021年 95卷 45-71页

作者： Fu, Jinghao Liu, shuwen Sun, Guozheng gao, Lei Southwest Petr Univ Sch Geosci & Technol Chengdu 610500 Sichuan Peoples R China Peking Univ Sch Earth & Space Sci Key Lab Orogen Belts & Crustal Evolut Minist Educ Beijing 100871 Peoples R China

The late Archean was a crucial transition period for global geodynamics. Metavolcanic rocks, as one of the predominant components of Archean cratons, are key to deciphering the geodynamic regimes of early Earth crust-mantle interactions. Neoarchean supracrustal rocks in the central K-rich granitoid belt of the eastern Hebei-western Liaoning Province, northern North China Craton, may be subdivided into a lower metavolcanic sequence and an upper metavolcanic-sedimentary sequence by an angular unconformity. The lower sequence metavolcanic rocks consist primarily of 2558-2536 Ma amphibolite to granulite facies metamorphosed basaltic-andesitic rocks and high- and low-MgO dacitic rocks. The basaltic-andesitic samples display calc-alkaline affinity, high MgO contents, low (Nb/La)N and moderate (Hf/Sm)N values and were most likely derived from partial melting of mantle materials metasomatized by subducted slab- and sedimentderived melts and fluids. The high-MgO dacitic samples are characterized by strongly fractionated rare earth element (REE) patterns and relatively high MgO contents, which resemble typical high-SiO2 adakites. The magmatic precursors originated from subducted oceanic slabs and sediments. The samples with low-MgO dacite compositions have the highest SiO2 and lowest MgO contents, and the magmatic precursors were generated by partial melting of metamorphosed high-K mafic rocks and sedimentary rocks in the lower crustal level. The upper sequence metavolcanic rocks chiefly comprise greenschist to amphibolite facies metamorphosed tholeiites, tholeiitic to transitional basalts, calc-alkaline basalts, andesites, and dacites with magmatic crystallization ages of 2522-2511 Ma. The tholeiite samples are characterized by left-declined REE patterns and high (Nb/La)N and chondrite-like (Hf/Sm)N values resembling typical N-MORBs and were formed by partial melting of a depleted mantle source. The tholeiitic to transitional basalt samples resemble back-arc basin basalts an

关键词： Neoarchean metavolcanic rocks K-rich granitoid belt Deformation and metamorphism Active continental margin Multistage trench retreats Northern North China Craton

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CD33/TREM2 Signaling Mediates Sleep Deprivation-Induced Memory Impairment by Regulating Microglial Phagocytosis

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NEUROMOLECULAR MEDICINE 2023年第2期25卷 255-271页

作者： Tan, shuwen gao, Hui Sun, Jianyu Li, Na Zhang, Yuxin Yang, Liu Wang, Min Wang, Qiang Zhai, Qian Xi An Jiao Tong Univ Ctr Brain Sci Dept Anesthesiol Affiliated Hosp 1 Xian 710061 Shaanxi Peoples R China Xi An Jiao Tong Univ Hlth Sci Ctr Xian 710061 Shaanxi Peoples R China

Sleep deprivation causes significant memory impairment in healthy adults. Extensive research has focused on identifying the biological mechanisms underlying memory impairment. Microglia-mediated synaptic elimination plays an indispensable role in sleep deprivation. Here, the potential role of the CD33/TREM2 signaling pathway in modulating memory decline during chronic sleep restriction (CSR) was evaluated. In this study, adult male C57BL/6 mice were sleep-restricted using an automated sleep deprivation apparatus for 20 h per day for 7 days. The Y-maze test revealed that spontaneous alternation was significantly reduced in CSR mice compared with control mice. The percentage of exploratory preference for the novel object in CSR mice was significantly decreased compared with that in control mice. These memory deficits correlated with aberrant microglial activation and increased phagocytic ability. Moreover, in CSR mice, the CD33 protein level in hippocampal tissue was significantly downregulated, but the TREM2 protein level was increased. In BV2 microglial cells, downregulation of CD33 increased TREM2 expression and improved microglial phagocytosis. Then, the sialic ligand monosialo-ganglioside 1 (GM1, 20 mg/kg, i.p.) was administered to mice once a day during CSR. Our results further showed that GM1 activated CD33 and consequently disturbed TREM2-mediated microglial phagocytosis. Finally, GM1 reversed CSR-induced synaptic loss and memory impairment via the CD33/TREM2 signaling pathway in the CA1 region of the hippocampus. This study provides novel evidence that activating CD33 and/or inhibiting TREM2 activity represent potential therapies for sleep loss-induced memory deficits through the modulation of microglial phagocytosis.

关键词： TREM2 CD33 Microglia Phagocytosis Sleep deprivation

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Neoarchean granitoid magmatism and geodynamic process in the northeastern North China craton

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GEOLOGICAL SOCIETY OF AMERICA BULLETIN 2024年第11-12期136卷 5091-5108页

作者： Sun, Guozheng Liu, shuwen Li, Sanzhong Bao, Han Wang, Wei Guo, Rongrong Fu, Jinghao gao, Lei Hu, Yalu Wang, Xi Yu, Shengyao Dai, Liming Ocean Univ China Frontiers Sci Ctr Deep Ocean Multispheres & Earth Key Lab Submarine Geosci & Prospecting Tech Minist Educ Qingdao 266100 Peoples R China Ocean Univ China Coll Marine Geosci Qingdao 266100 Peoples R China Qingdao Natl Lab Marine Sci & Technol Lab Marine Mineral Resources Qingdao 266237 Peoples R China Peking Univ Key Lab Orogen Belts & Crustal Evolut Minist Educ Beijing 100871 Peoples R China China Univ Geosci Beijing Sch Earth Sci & Resources Beijing 100083 Peoples R China Northeastern Univ Sch Resources & Civil Engn Dept Geol Key Lab Minist Educ Safe Min Deep Met Mines Shenyang 110819 Peoples R China Southwest Petr Univ Sch Geosci & Technol Chengdu 610500 Sichuan Peoples R China China Geol Survey Dev Res Ctr Beijing 100037 Peoples R China

The composition of Archean granitoid rocks changed from predominantly tonalite-trondhjemite-granodiorite (TTG) gneisses in the early Archean (4-3 Ga) to diversified granitoid rock assemblages in the late Archean (3.0-2.5 Ga), marking a crucial transformation in the geodynamic processes of early Earth. However, the reason for this major transition remains enigmatic because the petrogenetic features of different granitoid assemblages and their crust-mantle interactions during different periods are poorly understood. We use variations in the spatial-temporal distribution, lithological association, chemical composition, and petrogenesis of Neoarchean (2.7- 2.5 Ga) granitoids and inferred correlative crust-mantle interactions in the Eastern Liaoning Range (ELR) of the northeastern North China craton to explore this geodynamic transition. The early Neoarchean (ca. 2.7 Ga) ELR granitoids were dominated by TTG gneisses, and the late Neoarchean (2.6-2.5 Ga) ELR granitoid typology and compositions became more complex, changing into TTGs and more K 2 O-rich granitoid rocks. The TTGs can be subdivided into a high-Ca group and a low-Ca group: The 2.71-2.68 Ga high-Ca group TTG magma originated from partial melting of subducted juvenile oceanic crust, and the lowCa group TTG magma was derived from fractionation crystallization of the high-Ca group TTG magma. The chemical composition of the magmatic sources played a dominant role on the 2.60-2.50 Ga TTG magmatism: the high-Ca and low-Ca group TTG magmas came from low-K mafic rocks and tonalites, respectively. The 2.58-2.49 Ga K 2 O-rich granitoids can be divided into three petrogenetic series: (1) The high-CaMg group K 2 O-rich granitoid magma originated from partial melting of high-K mafic rocks, (2) the low-Ca-Mg group K 2 O-rich granitoid magma was derived from partial melting of sedimentary rocks, and (3) the transition group K 2 O-rich granitoid magma was sourced from metagreywackes. The 2.71-2.68 Ga TTGs were generated in an

关键词： Lithology

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Effects of humic acid-enhanced phosphate fertilizer on wheat yield, phosphorus uptake, and soil available phosphorus content

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CROP SCIENCE 2023年第2期63卷 956-966页

作者： gao, Shengchao Zhang, Shuiqin Yuan, Liang Li, Yanting Zhao, Lifang Wen, Yanchen Xu, Jiukai Hu, shuwen Zhao, Bingqiang Chinese Acad Agr Sci Inst Agr Resources & Reg Planning Key Lab Plant Nutr & Fertilizer Minist Agr & Rural Affairs Beijing Peoples R China China Agr Univ Coll Resources & Environm Sci Beijing Peoples R China Chinese Acad Agr Sci Inst Agr Resources & Reg Planning Key Lab Plant Nutr & Fertilizer Minist Agr & Rural Affairs Beijing 100081 Peoples R China

Humic acid (HA) can improve the use efficiency of phosphate fertilizer, although its optimal proportion in fertilizers remains unknown. In this study, we conducted soil column experiments over two growing seasons to compare the effects of different HA proportions in phosphate fertilizer on wheat yield and phosphorus uptake, utilization, and soil available phosphorus. At harvest, grain yields were 0.23%-13.21% higher under HA-enhanced phosphate (HAP) compared to treatments with conventional phosphate fertilizer (P). Among different HAPs, wheat treated with HAP with 1.0% HA (HAP10) or 2.0% HA (HAP20) had the highest 2-year grain yield. Furthermore, total phosphorus uptake and its allocation in grains were both higher under HAP treatments compared to P treatment. The apparent use efficiency, agronomic efficiency and partial productivity of phosphorus in HAP10 and HAP20 treatments were also significantly higher than those treated with P in both growing seasons. In addition, HAP10 and HAP20 treatments resulted in the highest content of available phosphorus in the 0-60 cm soil layer compared with other HAPs or P alone. Incorporating HA into phosphate fertilizer at proportions of 0.5%-5.0% can increase wheat yield, phosphorus uptake, phosphate fertilizer use efficiency, and soil available phosphorus content, 1.0% or 2.0% HA in HAP shows the highest effects on these indexes. Given the economic benefits, 1.0% level is an optimal level for enhancing the effects of phosphate fertilizer in winter wheat crops.

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LncSNHG14 promotes nutlin3a resistance by inhibiting ferroptosis via the miR-206/SLC7A11 axis in osteosarcoma cells

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CANCER GENE THERAPY 2023年第5期30卷 704-715页

作者： Li, Luoying Zhang, Yifan gao, Yan Hu, Yaqi Wang, Rui Wang, shuwen Li, Yuanyang He, Yumin Yuan, Chengfu China Three Gorges Univ Grade Pharmacol Lab Tradit Chinese Med 3 State Adm Tradit Chinese Med Yichang Peoples R China China Three Gorges Univ Hubei Key Lab Tumor Microenvironm & Immunotherapy Yichang 443002 Peoples R China China Three Gorges Univ Coll Basic Med Sci Yichang 443002 Peoples R China

The most prevalent form of primary osseous malignant tumor in adolescents and children is osteosarcoma (OS). A combination of surgery and neoadjuvant/post-surgery chemotherapy is currently the standard therapy. While the chemoresistance associated with OS generally leads to poor efficacy of therapeutic agents, the relevant molecular interaction is still elusive. Here, the lncRNA (long non-coding RNA) SNHG14 was found to be significantly upregulated in the nutlin3a-resistant OS cell line NR-SJSA1 and contributes to treatment resistance by suppressing ferroptosis. In NR-SJSA1 cells, knockdown of LncRNA SNHG14 resulted in a reversal of drug resistance and activation of ferroptosis, which disappeared when ferrostatin-1, a ferroptosis inhibitor, was added. Mechanistically, lncRNA SNHG14 targeted and down-regulated the expression of miR-206, further affecting the common ferroptosis inhibitor SLC7A11, and preventing NR-SJSA1 cells from undergoing ferroptosis. In conclusion, our findings highlight the involvement of lncRNA SNHG14 in ferroptosis and chemotherapy resistance of nutlin3a-resistant NR-SJSA1 cells, thus shedding new insight on how to overcome drug resistance in osteosarcoma cells and improve treatment efficacy.

关键词： Bone cancer Cell biology Molecular biology

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Structural analysis of lignite-derived humic acid and its microscopic interactions with heavy metal ions in aqueous solution

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SCIENCE OF THE TOTAL ENVIRONMENT 2023年第1期897卷 165385页

作者： Xue, shuwen Miao, Zhenyong gao, Mingqiang Wan, Keji China Univ Min & Technol Sch Chem Engn & Technol Xuzhou 221116 Jiangsu Peoples R China China Univ Min & Technol Natl Engn Res Ctr Coal Preparat & Purificat Xuzhou 221116 Jiangsu Peoples R China 1 Daxue Rd Xuzhou 221116 Peoples R China

Understanding heavy metal environmental behavior with humic acid (HA) is critical. There is currently a lack of information on the control of its structure organization on its reactivity to metals. The difference in HA structures under non-homogeneous conditions is critical for revealing its micro-interaction with heavy metals. The heterogeneity of HA was reduced using the fractionation method in this study, the chemical properties of HA fractions were analyzed using py-GC/MS, and the structural units of HA were proposed. Pb2+ was used as a probe to investigate the difference in the adsorption capacity of HA fractions. The microscopic interaction of structures with heavy metal was investigated and validated by structural units. The results show that as molecular weight increased, the oxygen content and the number of aliphatic chains decreased, but the opposite was true for aromatic and heterocyclic rings. The adsorption capacity for Pb2+ was as follows: HA-1 > HA-2 > HA-3. According to the linear analysis of the influencing factors of maximum adsorption capacity and possibility factors, the adsorption capacity was positively correlated with the contents of acid groups, carboxyl groups, phenolic hydroxyl groups, and the number of aliphatic chains. The phenolic hydroxyl group and the aliphatic-chain structure have the greatest impact. Therefore, structural differences and the number of active sites play an important role in adsorption. The binding energy of HA structural units to Pb2+ was calculated. It was found that the chain structure is easier to bind to heavy metals than aromatic rings, and the affinity of-COOH to Pb2+ is greater than that of -OH. These findings can help improve the adsorbent design.

关键词： Lead ions Micro-action Structural units Humic acid Correlation analysis

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6-Gingerol ameliorates alveolar hypercoagulation and fibrinolytic inhibition in LPS-provoked ARDS via RUNX1/NF-κB signaling pathway

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INTERNATIONAL IMMUNOPHARMACOLOGY 2024年 128卷 111459页

作者： Li, Qing Xiao, Chuan Gu, Jiarun Chen, Xianjun Yuan, Jia Li, shuwen Li, Wei gao, Daixiu Li, Lu Liu, Ying Shen, Feng Guizhou Med Univ Dept Intens Care Unit Affiliated Hosp Guiyang Peoples R China Guizhou Med Univ Emergency Dept Affiliated Hosp Guiyang Peoples R China

Background: Alveolar hypercoagulation and fibrinolytic inhibition play a central role in refractory hypoxemia in acute respiratory distress syndrome (ARDS), but it lacks effective drugs for prevention and treatment of this pathophysiology. Our previous experiment confirmed that RUNX1 promoted alveolar hypercoagulation and fibrinolytic inhibition through NF-kappa B pathway. Other studies demonstrated that 6-gingerol regulated inflammation and metabolism by inhibiting the NF-kappa B signaling pathway. We assume that 6-gingerol would ameliorate alveolar hypercoagulation and fibrinolytic inhibition via RUNX1/ NF-kappa B pathway in LPS-induced ARDS. Methods: Rat ARDS model was replicated through LPS inhalation. Before LPS inhalation, the rats were intraperitoneally treated with different doses of 6-gingerol or the same volume of normal saline (NS) for 12 h, and then intratracheal inhalation of LPS for 24 h. In cell experiment, alveolar epithelial cell type II (AECII) was treated with 6-gingerol for 6 h and then with LPS for another 24 h. RUNX1 gene was down-regulated both in pulmonary tissue and in cells. Tissue factor (TF), plasminogen Activator Inhibitor 1 (PAI-1) and thrombin were determined by Wester-blot (WB), qPCR or by enzyme-linked immunosorbent (ELISA). Lung injury score, pulmonary edema and pulmonary collagen III in rat were assessed. NF-kappa B pathway were also observed in vivo and in vitro. The direct binding capability of 6-gingerol to RUNX1 was confirmed by using Drug Affinity Responsive Target Stability test (DARTS). Results: 6-gingerol dose-dependently attenuated LPS-induced lung injury and pulmonary edema. LPS administration caused excessive TF and PAI-1 expression both in pulmonary tissue and in AECII cell and a large amount of TF, PAI-1 and thrombin in bronchial alveolar lavage fluid (BALF), which all were effectively decreased by 6-gingerol treatment in a dose-dependent manner. The high collagen III level in lung tissue provoked by LPS was significan

关键词： 6-Gingerol Alveolar hypercoagulation Fibrinolytic inhibition Acute respiratory distress syndrome Runt-related transcription factor 1 NF-kappa B signaling pathway

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Long term maintenance of cytochrome P450 activity in a cell sheet-based three-dimensional human hepatic model

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Shengwu Yixue Gongchengxue Zazhi/Journal of Biomedical Engineering 2022年第4期39卷 776-783页

作者： Guan, shuwen gao, Botao Xiao, Jiangwei Biomedical Materials Research Office Institute of Biological and Medical Engineering Guangdong Academy of Sciences Guangzhou510000 China

Primary human hepatocytes (PHH) are the gold standard of in vitro human liver model for drug screening. However, a problem of culturing PHH in vitro is the rapid decline of cytochrome P450 (CYP450) activity, which plays an important role in drug metabolism. In this study, thermo-responsive culture dishes were used to explore the conditions for murine embryonic 3T3-J2 fibroblasts to form cell sheet. Based on the cell sheet engineering technology, a three-dimensional (3D) "sandwich" co-culture system of 3T3-J2 cell sheet/PHH/collagen gel was constructed. The tissue structure and protein expression of the model section were observed by hematoxylin eosin staining and immunofluorescence staining respectively. Phenacetin and bupropion were used as substrates to determine the activity of CYP450. The contents of albumin and urea in the system were determined by enzyme linked immunosorbent assay (ELISA). The results showed that the complete 3T3-J2 cell sheet could be obtained when the cell seeding density was 1.5×106/dish (35 mm dish) and the incubation time at low temperature was 60 min. Through cell sheet stacking, a 3D in vitro liver model was developed. Compared with the two-dimensional (2D) model, in the 3D model, the cell-cell and cell-matrix connections were tighter, the activities of cytochrome P450 CYP1A2 and cytochrome P450 CYP2B6 were significantly increased, and the secretion levels of albumin and urea were increased. These indexes could be maintained stably for 21 d. Therefore, cell sheet stacking is helpful to improve the level of liver function of 3D liver model. This model is expected to be used to predict the metabolism of low-clearance drugs in preclinical, which is of great significance for drug evaluation and other studies. © 2022 West China Hospital, Sichuan Institute of Biomedical Engineering. All rights reserved.

关键词： Fibroblasts

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Research progress on improving the performance of MoS2 photodetector

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JOURNAL OF OPTICS 2022年第10期24卷 104003-104003页

作者： Cheng, Yongfa Wan, Rui Li, Li Liu, Zunyu Yan, shuwen Li, Luying Wang, Jianbo gao, Yihua Huazhong Univ Sci & Technol Wuhan Natl Lab Optoelect Luoyu Rd 1037 Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Sch Phys Luoyu Rd 1037 Wuhan 430074 Peoples R China Wuhan Univ Sch Phys & Technol Ctr Electron Microscopy MOE Key Lab Artificial Micro & Nanostruct Wuhan 430072 Peoples R China Wuhan Univ Inst Adv Studies Wuhan 430072 Peoples R China

Two-dimensional layered materials have attracted increasing attention due to their unique structures and outstanding mechanical and physical properties. Transition metal dichalcogenides (TMDs) possess unique physical properties and optical properties that meet the basic requirements of photodetectors. As representative TMDs, MoS2 has excellent mechanical properties due to its strong covalent bonds and great elasticity. The monolayer MoS2 has a direct bandgap of around 1.8 eV. In addition, MoS2-based optoelectronic devices have high switching ratio and carrier mobility. However, due to the characteristic of atomic-scale thickness, the light-harvesting ability of layered TMDs is very weak, which largely limits the responsivity and detection rate of photodetectors, thus inhibiting the practical application of such devices. The slow photo response rate is also a problem that often occurs in TMDs devices. Researchers have reported several strategies to improve the performance of TMDs-based photodetectors. At present, there are two main optimization schemes, namely surface modification, and heterostructure construction. The utilization of metal plasmon effect and the construction of heterojunctions are both effective means to improve the performance of MoS2 photodetectors. These schemes can improve the light absorption capability of MoS2 and broaden the range of light detection. However, there are also disadvantages of the complex processes and limited enhancement effects in large-area fabrication. Therefore, it is of vital significance to further explore the response range and performance of MoS2 photodetectors.

关键词： two-dimensional MoS2 photodetector optoelectronics

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From Optimal to Practical: Efficient Micro-op Cache Replacement Policies for Data Center Applications 31

From Optimal to Practical: Efficient Micro-op Cache Replacem...

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31st IEEE International Symposium on High Performance Computer Architecture, HPCA 2025

作者： Zhu, Kan Zhao, Yilong gao, Yufei Braun, Peter Khan, Tanvir Ahmed Litz, Heiner Kasikci, Baris Deng, shuwen UC Berkeley United States University of Washington United States Tsinghua University Department of Electronic Engineering China UC Santa Cruz United States Columbia University United States

ISBN: (纸本)9798331506476

Optimizing the CPU frontend has become crucial for modern processors with intricate instruction decoding logic, especially for efficiently running planet-scale data center applications. Micro-operation (micro-op) cache is a key unit to help improve the energy efficiency of the CPU frontend. Unfortunately, we find that data center applications suffer from frequent micro-op cache misses due to the lack of an effective micro-op cache replacement policy. Developing micro-op cache-specific replacement policies is challenging, as there currently does not exist an optimal theoretical solution akin to Belady's algorithm for conventional caches. As a result, it is unknown by how much replacement policies can be improved and how to get there. To address these challenges, we introduce FLACK, a new near-optimal offline policy that considers the key features of the micro-op cache, such as variable and disproportional costs of micro-op cache misses and partial hits. We show that FLACK substantially outperforms Belady's algorithm, thus establishing a new baseline for micro-op cache replacement policies. We then design FURBYS, a practical policy that mimics FLACK via profile-guided methods. FURBYS has three key components to perform cache replacement decisions: (1) it uses profiles of the whole-execution hit/miss behavior, (2) it detects locally (transiently) hot data, and (3) it selectively ignores data with profiled low hit rates. We evaluate FLACK and FURBYS using 11 data center applications and find that FLACK demonstrates an average bound of 30.21% miss reduction, achieving 4.46% greater miss reduction than Belady's algorithm. Our practical policy, FURBYS, provides 14.34% average miss reduction compared to LRU, which is 1.84 × greater than the current state-of-the-art replacement policy, contributing to 3.10% of performance-perwatt improvement for the CPU core. On average, in terms of miss reduction and IPC gain, FURBYS is equivalent to LRU policy on 1.5 × micro-op cache sizes

关键词： Time sharing systems

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