Results 41 to 50 of about 19,118 (230)

Boosting LPMO-driven lignocellulose degradation by polyphenol oxidase-activated lignin building blocks

Biotechnology for Biofuels, 2017
Background Many fungi boost the deconstruction of lignocellulosic plant biomass via oxidation using lytic polysaccharide monooxygenases (LPMOs). The application of LPMOs is expected to contribute to ecologically friendly conversion of biomass into fuels ...
Matthias Frommhagen, Sumanth Kumar Mutte, Adrie H. Westphal, Martijn J. Koetsier, Sandra W. A. Hinz, Jaap Visser, Jean-Paul Vincken, Dolf Weijers, Willem J. H. van Berkel, Harry Gruppen, Mirjam A. Kabel   +10 more
doaj   +1 more source

Citrate-Coated Platinum Nanoparticles Exhibit a Primary Particle-Size Dependent Effect on Stimulating Melanogenesis in Human Melanocytes

Cosmetics, 2020
Hypopigmentation disorders due to an underproduction of the pigment melanin by melanocytes cause uneven skin coloration, while in hair follicles they cause grey hair.
Shilpi Goenka, Jimmy Toussaint
doaj   +1 more source

Multimodal Imaging Reveals Rapid Catecholamine Uptake and Release by Neutrophils

Advanced Science, EarlyView.
We show that immune cells (neutrophils) synthesize, uptake, and store catecholamine neurotransmitters such as dopamine or adrenaline. They also release them in response to specific stimuli (serotonin), which we directly visualize using fluorescent nanosensors. We further demonstrate that catecholamines affect neutrophil functions (NETosis) and platelet
Jennifer Mohr, Anne Schmitz, Meshkat Dinarvand, Franziska Wulfert, Sangeetha Shankar, Bjoern F. Hill, Michael Wojak, Juliana Gretz, Marie Britz, Elsa Neubert, Magdalena Shumanska, Sofia Kaushik, Linda Kartaschew, Ivan Bogeski, James Daniel, Sebastian Jung, Johannes Eble, Guido Wabnitz, Luise Erpenbeck, Sebastian Kruss   +19 more
wiley   +1 more source

Supramolecular Assembly of Stepped‐Persistent ROS Nanogenerator for Sustained Tumor Immunotherapy

Advanced Science, EarlyView.
ROS catalytic systems often fail to achieve both effective tumor elimination and persistent immune activation due to their monotonous ROS production profiles. A stepped‐persistent ROS nanogenerator was developed by supramolecularly assembling multiple ROS generation modules within a nanofiber structure to simultaneously extend ROS generation duration ...
Zhenqiang Wang, Ming Qin, Wenjing Lai, Shiwen Chen, Fengling Wang, Dandan Xie, Maohua Chen, Changpeng Hu, Kui Wang, Rong Zhang, Guobing Li   +10 more
wiley   +1 more source

Characterisation of polyphenol oxidase from Melissa officinalis L. subsp. officinalis (lemon balm)

Czech Journal of Food Sciences, 2013
Polyphenol oxidase (PPO) from Melissa officinalis L. subsp. officinalis (lemon balm) was partially purified by ammonium sulphate precipitation and dialysis; and then it was characterised in detail in terms of pH and temperature optima, thermal stability,
Serap DOĞAN, Yasemin AYYILDIZ, Mehmet DOĞAN, Ümran ALAN, Mehmet Emin DİKEN   +4 more
doaj   +1 more source

Spatiotemporal Targeting Randle Cycle and Immune Checkpoint for Potent Antitumor Therapy

Advanced Science, EarlyView.
A glucose oxidase‐based nanogel (GOX‐NG) system using catechol‐functionalized alginate, exhibits enhanced tumor penetration, prolonged retention, and sustained glucose depletion in the tumor microenvironment. When combined with a fatty acid oxidation inhibitor, it implements dual metabolic suppression, thereby enhancing ROS‐induced immunogenic cell ...
Yuan Gao, Zijian Gong, Yixuan Fu, Jianan Zheng, Xiao Sang, Binglin Chen, Qinzhi Su, Weiping Gao, Fei Duan, Jinqi Wei, Xuliang Deng, Xinyu Liu   +11 more
wiley   +1 more source

Síntese, caracterização e estudos cinéticos de complexos de cobre(II) com ligantes triazínicos como modelos biomiméticos da metaloenzima catecol oxidase [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014.A influência da segunda esfera de coordenação principalmente na eficiência catalítica de ...
Silva, Marcos Paulo da
core  

Isolation and properties of polyphenol oxidase from basidiocarps of Lactarius pergamenus Fr. (Fr.) fungi [PDF]

The Ukrainian Biochemical Journal, 2015
Fresh juice of basidiocarps of Lactarius pergamenus Fr. (Fr.) fungi was subjected to ion exchange chromatography with used DEAE-toyopearl and CM-cellulose columns, as well as preparative electrophoresis in 7.5% polyacrylamide gels (pH 8.6).
M. V. Tsivinska, V. O. Antonyuk, R. S. Stoika   +2 more
doaj   +1 more source

Nano‐Backpack Engineered Probiotics with Reactive Oxygen Species–Responsive Tungsten Release for Synergistic Therapy of Inflammatory Bowel Disease

Advanced Science, EarlyView.
An integrated probiotic system is engineered to execute a programmed therapeutic cascade against inflammatory bowel disease. Upon pathological signals, the system sequentially performs ROS scavenging, tungsten release, and selective pathogen suppression, thereby breaking the oxidative stress–dysbiosis cycle to remodel gut microbiota and reinforce ...
Yang Yang, Liucan Wang, Guoqing Chen, Yuanling Zhang, Jiarui Shi, Wenzhe Fan, Min Yu, Jixi Zhang, Hua Yang   +8 more
wiley   +1 more source

Anti-inflammatory functions of purpurogallin in LPS-activated human endothelial cells [PDF]

BMB Reports, 2012
Enzymatic oxidation of commercially available pyrogallol wasefficiently transformed to an oxidative product, purpurogallin.Purpurogallin plays an important role in inhibiting glutathioneS-transferase, xanthine oxidase, catechol O ...
Tae Hoon Kim, Sae-Kwang Ku, In-Chul Lee, Jong-Sup Bae   +3 more
doaj   +1 more source