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Assembly of polysubstituted chiral cyclopropylamines via highly enantioselective Cu-catalyzed three-component cyclopropene alkenylamination.

Yu Zhang, Yuan Li, Wei Zhou, Mengru Zhang, Qian Zhang, Ran Jia, Jinbo Zhao,

Enabled by a commercial bisphosphine ligand, the Cu-catalyzed three-component cyclopropene alkenylamination with alkenyl organoboron reagent and hyroxyamine esters proceeds with exceptionally high enantioselectivity to deliver poly-substituted cis-1,2-alkenylcyclopropylamines that contain up to all three stereogenic centers on the cyclopropane. ... Read more >>

Chem Commun (Camb) (Chemical communications (Cambridge, England))
[2020, 56(81):12250-12253]

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Modular design of Bi-specific nanoplatform engaged in malignant lymphoma immunotherapy.

Chen Bai, Pengcheng Hu, Wei Zhang, Lina Song, Di Liu, Yi Chen, Ming Ma, Ning Gu, Yu Zhang,

Nanocarrier systems play an important role in cancer immunotherapy. In this article, biotinylated CD20 and CD3 antibodies were conjugated onto the surface of streptavidin modified ultra-small Fe3O4 nanoparticles via specific binding between streptavidin and biotin to construct a bi-specific nanoplatform (BSNP). The synthesized BSNP with 30 nm hydrodynamic size provides ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(35):18418-18428]

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Protective effect of a dietary flavonoid-rich antioxidant from bamboo leaves against internal exposure to acrylamide and glycidamide in humans.

Xinyu Chen, Wei Jia, Qiao Wang, Jianxin Han, Jun Cheng, Weijiang Zeng, Qingning Zhao, Yu Zhang, Ying Zhang,

Polyphenolic antioxidants may effectively reduce acrylamide contents in processed foods. However, few studies focused on their detoxification effects via estimating the profile change of internal exposure biomarkers. Here we showed the protective effect of a water-soluble flavone-C-glycoside-rich antioxidant from bamboo leaves (AOB-w) against acrylamide-induced toxicity in college students. The participants ... Read more >>

Food Funct (Food & function)
[2020, 11(8):7000-7011]

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A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity.

Linqing Zhuo, Pengpeng Fan, Shuang Zhang, Xiaohe Liu, Xinyi Guo, Yu Zhang, Yuansong Zhan, Dongquan Li, Zhen Che, Wenguo Zhu, Huadan Zheng, Jieyuan Tang, Jun Zhang, Yongchun Zhong, Yunhan Luo, Jianhui Yu, Zhe Chen,

Carbon-based nanomaterials such as carbon nanotubes (CNTs) and graphene have great potential for high-performance all-carbon photodetectors due to their unique optical and electronic properties. Here, we assemble a hybrid CNT/graphene film prepared by depositing CNTs on a single layer graphene with a side-polished optical fiber to achieve a novel all-fiber ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(26):14188-14193]

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Ultrasound-responsive alkaline nanorobots for the treatment of lactic acidosis-mediated doxorubicin resistance.

Xia Meng, Yurui Xu, Qiangbing Lu, Lei Sun, Xueying An, Jikang Zhang, Jianmei Chen, Ya Gao, Yu Zhang, Xinghai Ning,

Lactic acidosis is one of the key characteristics of the tumor microenvironment (TME), and plays a critical role in therapy resistance, making it an attractive target for enhancing anticancer treatment. However, no effective systems exhibit the ability to selectively neutralize tumor lactic acidosis in a controlled manner. Here, we have ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(25):13801-13810]

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Ultrasound-degradable serum albumin nanoplatform for in situ controlled drug release.

Jianjun Du, Yu Zhang, Haoying Ge, Chao Shi, Saran Long, Wen Sun, Jiangli Fan, Xiaojun Peng,

In this work, bovine serum albumin-based nanoparticles, BSA-ACVA-DOX NPs, were fabricated for ultrasound-driven drug release, and exhibited excellent tissue penetration. Moreover, a pulsatile release of DOX in vivo could be programmed by in vitro (i.e., remotely) switching the ultrasound on and off. ... Read more >>

Chem. Commun. (Camb.) (Chemical communications (Cambridge, England))
[2020, 56(54):7503-7506]

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Sialic acid-modified dexamethasone lipid calcium phosphate gel core nanoparticles for target treatment of kidney injury.

Hongbing Liu, Hui Zhang, Na Yin, Ying Zhang, Jingxin Gou, Tian Yin, Haibing He, Hong Ding, Yu Zhang, Xing Tang,

Acute kidney injury (AKI) is a common clinical disease with high morbidity and mortality. Glucocorticoids are drugs that effectively relieve AKI, but the systemic side effects of long-term use limit their use. Herein, we constructed sialic acid-modified dexamethasone sodium phosphate (Dsp)-loaded lipid calcium phosphate gel core nanoparticles (SA-NPs) for the ... Read more >>

Biomater Sci (Biomaterials science)
[2020, 8(14):3871-3884]

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Optimizing electric field distribution via tuning cross-linked point size for improving the dielectric properties of polymer nanocomposites.

Jie Liu, Yu Zhang, Zhaoyang Wang, Jiale Ding, Shuhui Yu, Yunhe Zhang, Zhenhua Jiang,

Polymer nanocomposites containing high K ceramics have been developed for boosting the energy density of dielectric capacitors. However, there are numerous challenges in the research about how to optimize the electric field distribution and improve the interfacial structure of nanocomposites for overcoming dielectric mismatches between high K nanofillers and low ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(23):12416-12425]

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An in vitro and in vivo comparison of Mg(OH)2-, MgF2- and HA-coated Mg in degradation and osteointegration.

Shi Cheng, Wanshun Wang, Donghui Wang, Binglin Li, Jielong Zhou, Dongdong Zhang, Lidan Liu, Feng Peng, Xuanyong Liu, Yu Zhang,

Magnesium hydroxide (Mg(OH)2), magnesium fluoride (MgF2), and hydroxyapatite (HA) films on Mg are widely studied owing to their easy preparation and favorable corrosion protection. Nevertheless, the most suitable film with the best performance for biomedical applications between the three films remains unknown. Therefore, the performance of the three coatings from ... Read more >>

Biomater Sci (Biomaterials science)
[2020, 8(12):3320-3333]

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A bio-inspired injectable hydrogel as a cell platform for real-time glycaemic regulation.

Yu Zhang, Jun Yang, Jun Zhang, Shuangwen Li, Lisi Zheng, Yanlong Zhang, Huipeng Meng, Xinge Zhang, Zhongming Wu,

Frequent subcutaneous insulin injection and islet transplantation are promising therapeutic options for type 1 diabetes mellitus. However, poor patient compliance, insufficient appropriate islet β cell donors and body immune rejection limit their clinical applications. The design of a platform capable of encapsulating insulin-secreting cells and achieving real-time blood glucose regulation, ... Read more >>

J Mater Chem B (Journal of materials chemistry. B)
[2020, 8(21):4627-4641]

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Enhanced nanoparticle accumulation by tumor-acidity-activatable release of sildenafil to induce vasodilation.

Peng Zhang, Yu Zhang, Xiaoya Ding, Chunsheng Xiao, Xuesi Chen,

Inefficient nanoparticle accumulation in solid tumors hinders the clinical translation of cancer nanomedicines. Herein, we proposed that sildenafil, a vasodilator ampholyte, could be used to promote nanoparticle accumulation by inducing vasodilation after its tumor acidity-triggered release from the nanocarriers. To confirm this, sildenafil was first encapsulated in a cisplatin-incorporated polymeric ... Read more >>

Biomater Sci (Biomaterials science)
[2020, 8(11):3052-3062]

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A broadband and low-power light-control-light effect in a fiber-optic nano-optomechanical system.

Yu Zhang, Wenguo Zhu, Pengpeng Fan, Yelin He, Linqing Zhuo, Zhen Che, Dongquan Li, Huadan Zheng, Linpeng Dong, Jieyuan Tang, Wentao Qiu, Jun Zhang, Yongchun Zhong, Jianhui Yu, Zhe Chen,

The coupling of the optical and mechanical degrees of freedom using optical force in nano-devices offers a novel mechanism to implement all-optical signal processing. However, the ultra-weak optical force requires a high pump optical power to realize all-optical processing. For such devices, it is still challenging to lower the pump ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(17):9800-9809]

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A CD44-targeted Cu(ii) delivery 2D nanoplatform for sensitized disulfiram chemotherapy to triple-negative breast cancer.

Zhiguo Gao, Yaojia Li, Yu Zhang, Peijing An, Fanghui Chen, Jian Chen, Chaoqun You, Zhifei Wang, Baiwang Sun,

Recent studies have suggested that the anticancer activity of disulfiram (DSF, an FDA-approved alcohol-abuse drug) is Cu-dependent. Low system toxicity and explicit pharmacokinetic characteristics of DSF necessitate safe and effective Cu supplementation in local lesion for further applications. Herein, we presented a new conceptual 'nanosized coordination transport' strategy of Cu(ii) ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(15):8139-8146]

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A novel indomethacin/methotrexate/MMP-9 siRNA in situ hydrogel with dual effects of anti-inflammatory activity and reversal of cartilage disruption for the synergistic treatment of rheumatoid arthritis.

Na Yin, Xinyi Tan, Hongbing Liu, Fengming He, Ning Ding, Jingxin Gou, Tian Yin, Haibing He, Yu Zhang, Xing Tang,

Rheumatoid arthritis (RA) is an autoimmune disease characterized by inflammatory cell infiltration, and cartilage and bone disruption, which ultimately leads to loss of joint function. Current treatments for RA only focus on anti-inflammatory activity but neglect to prevent further damage to articular cartilage and bone. Here we attempted to co-deliver ... Read more >>

Nanoscale (Nanoscale)
[2020, 12(15):8546-8562]

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An ultrasensitive and selective fluorescent nanosensor based on porphyrinic metal-organic framework nanoparticles for Cu2+ detection.

Changming Cheng, Ruolin Zhang, Jiuhai Wang, Yu Zhang, Chunyi Wen, Youhua Tan, Mo Yang,

Detecting trace amounts of copper ions (Cu2+) is of high importance since copper is an essential element in the environment and the human body. Despite the recent advances in Cu2+ detection, the current approaches still suffer from insensitivity and lack of in situ detection in living cells. In the present ... Read more >>

Analyst (The Analyst)
[2020, 145(3):797-804]

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Lateral flow fluorescent immunoassay based on isothermal amplification for rapid quantitative detection of Salmonella spp.

Linlin Zhuang, Jiansen Gong, Yongxin Ji, Peilong Tian, Fei Kong, Huiyuan Bai, Ning Gu, Yu Zhang,

Salmonella spp. are zoonotic pathogens of substantial public health concern. To enable detection in the field or under instrument-free conditions, we developed a rapid and robust lateral flow fluorescent immunoassay based on strand exchange amplification (SEA-LFIA) for the quantitative detection of Salmonella spp. As far as we know, this work ... Read more >>

Analyst (The Analyst)
[2020, 145(6):2367-2377]

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Enhanced pseudocapacitive energy storage properties of budding-branch like [email protected]/CNT nanorods.

Haochen Si, Li Sun, Yuanxing Zhang, Lin Wu, Yu Zhang, Yihe Zhang,

Despite its high theoretical capacitance, molybdenum dioxide still cannot be well applied in supercapacitors due to its low conductivity and structural instability. Generally, compositing molybdenum dioxides with carbon materials can provide new possibilities. In this work, we successfully fabricated a budding-branch like [email protected] composite wrapped by carbon nanotubes (CNTs). Different ... Read more >>

Dalton Trans (Dalton transactions (Cambridge, England : 2003))
[2020, 49(5):1637-1645]

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Insight into the magnetic moment of iron borides: theoretical consideration from the local coordinative and electronic environment.

Hongliu Wan, Xing-Wu Liu, Ming Qing, Jin-Jia Liu, Yu Zhang, Suyao Liu, Hong Wang, Xiao-Dong Wen, Yong Yang, Yong-Wang Li,

Experimentally observed magnetic properties are usually statistically averaged from bulk materials and information associated with the local chemical environment cannot be specified. Against this backdrop, we propose a theoretical strategy to provide an in-depth understanding of the multi-role for metrics that may contribute to the apparent magnetic moment of iron ... Read more >>

Dalton Trans (Dalton transactions (Cambridge, England : 2003))
[2020, 49(7):2168-2175]

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Facile and scalable synthesis of topologically nanoengineered polypeptides with excellent antimicrobial activities.

Yu Zhang, Wenliang Song, Shuwei Li, Dae-Kyoung Kim, Jae Ho Kim, Jung Rae Kim, Il Kim,

A facile and scalable strategy for the quick library synthesis of linear-, hinged-, star-, and cyclic-polypeptides with broad-spectrum antimicrobial activity has been reported. The topologically nanoengineered polypeptides show superior antimicrobial activity against Gram-positive and Gram-negative bacteria and low toxicity, allowing screening of architectural polypeptides as mimics of host defense peptides ... Read more >>

Chem. Commun. (Camb.) (Chemical communications (Cambridge, England))
[2020, 56(3):356-359]

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Synthesis of 2-alkenylfurans via a Ag(i)-catalyzed tandem cyclization/cross-coupling reaction of enynones with iodonium ylides.

Haiyun Peng, Yinbo Wan, Yu Zhang, Guisheng Deng,

A silver(i)-catalyzed tandem cyclization/cross-coupling reaction of enynones with iodonium ylides to construct carbon-carbon double bonds has been developed. The strategy provides a novel method for the synthesis of 2-alkenylfurans. This is the first cross-coupling reaction between metal-carbene complexes and iodonium ylides. ... Read more >>

Chem. Commun. (Camb.) (Chemical communications (Cambridge, England))
[2020, 56(9):1417-1420]

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Green synthesis of up- and down-conversion photoluminescent carbon dots from coffee beans for Fe3+ detection and cell imaging.

Wanyu Zhang, Lihua Jia, Xiangfeng Guo, Rui Yang, Yu Zhang, Zhenlong Zhao,

Carbon dots (CDs) are a developing stable, conductive, and environmentally friendly fluorescent nanomaterial with potential applications in biomedicine and sensing. In this study, CDs with up- and down-conversion photoluminescence characteristics were prepared via a one-pot hydrothermal method using coffee beans as the sole raw material. Fourier transform infrared spectra and ... Read more >>

Analyst (The Analyst)
[2019, 144(24):7421-7431]

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The potential of low molecular weight heparin to mitigate cytokine storm in severe COVID-19 patients: a retrospective clinical study

CHEN SHI, CONG WANG, HANXIANG WANG, CHAO YANG, FEI CAI, FANG ZENG, FANG CHENG, YIHUI LIU, TAOTAO ZHOU, BIN DENG, Israel Vlodavsky, JINPING LI, YU ZHANG,

Background On March 11, 2020, the World Health Organization declared its assessment of COVID-19 as a global pandemic. However, specific antiviral drugs are still unavailable, and pateints are managed by multiple complementary treatments. Methods The electronic medical records of COVID-19 patients where basic information, complete blood count, coagulation profile, inflammatory ... Read more >>

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Value of ultrasound-guided transforaminal nerve block in the treatment of lumbar disc herniation.

Liu Guang-Hui, Zhu Guang-Yu, Liu Yu-Zhang, Zhu Yong-Tao, Zhang Shi-Min, Jin Jiao,

J. Int. Med. Res. (The Journal of international medical research)
[2020, 48(4):300060520910910]

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In Situ Deposition of CuBiS₂ on Mesoporous TiO₂ Film for Light Absorber in Solar Cells.

Peng-Cheng Wang, Feng-Zhu Li, Yu Zhang, Hao-Chen Fan, Xue-Qin Zhou, Yan-Lin Song, Ke-Jian Jiang,

In this report, emplectite (CuBiS₂) semiconductor has been deposited on mesoporous TiO₂ using gas-solid reaction method. For the first time, CuCl₂ and BiCl₃ are solution-coated on mesoporous TiO₂ films, and thereafter reacted with H₂S gas in an H₂S atmosphere. The CuBiS₂ film is further confirmed using X-ray diffraction; thus, demonstrating ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2020, 20(12):7748-7752]

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Cytisine exerts anti-tumour effects on lung cancer cells by modulating reactive oxygen species-mediated signalling pathways.

Wan-Ting Xu, Tian-Zhu Li, Shu-Mei Li, Cheng Wang, Hao Wang, Ying-Hua Luo, Xian-Ji Piao, Jia-Ru Wang, Yu Zhang, Tong Zhang, Hui Xue, Long-Kui Cao, Cheng-Hao Jin,

Cytisine is a natural product isolated from plants and is a member of the quinolizidine alkaloid family. This study aims to investigate the effect of cytisine in human lung cancer. Cell viability was determined using the CCK-8 assay, and the results showed that cytisine inhibited the growth of lung cancer ... Read more >>

Artif Cells Nanomed Biotechnol (Artificial cells, nanomedicine, and biotechnology)
[2020, 48(1):84-95]

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