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Functionalized fluorescent organic nanoparticles based AIE enabling effectively targeting cancer cell imaging
We report a fluorescent dye TM by incorporating the tetraphenylethylene (TPE) and cholesterol components into perylene bisimides (PBI) derivative. Fluorescence emission spectrum shows that the dye has stable red emission and aggregation-induced emission (AIE) characteristics. The incorporation of cholesterol components triggers TM to show induced chirality through supramolecular self-assembly. The cRGD-functionalized nanoparticles were prepared by encapsulating fluorescent dyes with amphiphilic polymer matrix. The functionalized fluorescent organic nanoparticles exhibit excellent biocompatibility, large Stokes' shift and g...
Source: Chembiochem - September 17, 2023 Category: Biochemistry Authors: Jing Zhang Jiaqi Liu Chengyan Niu Qiulan Wu Jingjing Tan Ning Jing Ying Wen Source Type: research
Single-molecule analysis of osmolyte-mediated nanomechanical unfolding behavior of a protein domain
Int J Biol Macromol. 2023 Sep 15:126849. doi: 10.1016/j.ijbiomac.2023.126849. Online ahead of print.ABSTRACTThe small organic molecules, known as osmolytes being ubiquitously present in different cell types, affect protein folding, stability and aggregation. However, it is unknown how the osmolytes affect the nanomechanical unfolding behavior of protein domain. Here, we show the osmolyte-dependent mechanical unfolding properties of protein titin immunoglobulin-27 (I27) domain using an atomic force microscopy (AFM)-based single-molecule force spectroscopy. We found that amines and methylamines improved the mechanical stabil...
Source: International Journal of Biological Macromolecules - September 17, 2023 Category: Biochemistry Authors: Manish Bajaj Mohd Muddassir Bumjoon Choi Priyanka Singh Jong Bum Park Surjeet Singh Manisha Yadav Rajesh Kumar Kilho Eom Deepak Sharma Source Type: research
Green synthesis of multifunctional zinc oxide nanoparticles from cordia myxa gum; and their catalytic reduction of nitrophenol, anticancer and antimicrobial activity
This study uses CMX gum as a bioreduction to produce multifunctional, environmentally friendly zinc-oxide nanocomposites (ZnO NPs). The process involves a low reaction time and temperature and utilizes CMX as a reducing and stabilizing agent. The structural, morphological, and optical properties of the CMX-ZnO nanocomposite were characterized. The biosynthetic CMX-ZnO NPs exhibited robust catalytic activity and recycling capacity for rapidly oxidizing hazardous p-NPs. The complete reduction of 4-NP to CMX-ZnO NPs in excess NaBH4 was achieved within 15 min, with recyclability and pseudo-first-order kinetics with a rate cons...
Source: International Journal of Biological Macromolecules - September 17, 2023 Category: Biochemistry Authors: Kasula Nagaraja O H Tae Hwan Source Type: research
A new SERS quantitative analysis method for trace malathion with recognition and catalytic amplification difunctional MOF < sub > Tb < /sub > @Au@MIP nanoprobe
Talanta. 2023 Sep 13;267:125166. doi: 10.1016/j.talanta.2023.125166. Online ahead of print.ABSTRACTNew multifunctional nanomaterial preparation and its application to trace pollutant analysis are interesting to peoples. Using terbium metal-organic framework loaded gold nanoparticles (MOFTb@Au) as the nanosubstrate and 3-aminopropyltriethoxysilane (APTES) as the functional monomer, a new bifunctional nanosurface molecularly imprinted polymer nanoprobe of MOFTb@Au@MIP with strongly recognition and catalytic amplification functions was prepared by the microwave sol-gel procedure. It was characterized by scanning electron micr...
Source: Talanta - September 17, 2023 Category: Chemistry Authors: Yiyi Shu Jingjing Li Hongyan Bai Aihui Liang Guiqing Wen Zhiliang Jiang Source Type: research
Novel Triangulenes: Computational Investigations of Energy Thresholds for Photocatalytic Water Splitting
Chemphyschem. 2023 Sep 17:e202300556. doi: 10.1002/cphc.202300556. Online ahead of print.ABSTRACTOrganic materials with Inverted Singlet-Triplet (INVEST) gaps are interesting for their potential use as photocatalytic small molecule transformations, like the entirely solar-driven water splitting reaction. However, only few INVEST emitters are thermodynamically able to split water, with first singlet excited states, S1, above 1.27 or 1.76 eV; and absorbing near solar maximum, 2.57 eV. These requirements and the INVEST character are key for achieving long-lived photocatalyst for water splitting. The only known INVEST emitters...
Source: Chemphyschem - September 17, 2023 Category: Chemistry Authors: Kevin Curtis Corban King Samuel O Odoh Source Type: research
Functionalized fluorescent organic nanoparticles based AIE enabling effectively targeting cancer cell imaging
We report a fluorescent dye TM by incorporating the tetraphenylethylene (TPE) and cholesterol components into perylene bisimides (PBI) derivative. Fluorescence emission spectrum shows that the dye has stable red emission and aggregation-induced emission (AIE) characteristics. The incorporation of cholesterol components triggers TM to show induced chirality through supramolecular self-assembly. The cRGD-functionalized nanoparticles were prepared by encapsulating fluorescent dyes with amphiphilic polymer matrix. The functionalized fluorescent organic nanoparticles exhibit excellent biocompatibility, large Stokes' shift and g...
Source: Chembiochem - September 17, 2023 Category: Biochemistry Authors: Jing Zhang Jiaqi Liu Chengyan Niu Qiulan Wu Jingjing Tan Ning Jing Ying Wen Source Type: research
Production of (hydroxy)benzoate-derived polyketides by engineered Pseudomonas with in situ extraction
Bioresour Technol. 2023 Sep 15:129741. doi: 10.1016/j.biortech.2023.129741. Online ahead of print.ABSTRACTPolyketides from (hydroxy)benzoates are an interesting group of plant polyphenolic compounds, whose biotechnological production is so-far underrepresented due to their challenging heterologous biosynthesis. Efficient heterologous production of 2,4,6-tri- and 2,3',4,6-tetrahydroxybenzophenone, 3,5-dihydroxybiphenyl, and 4-hydroxycoumarin by whole-cell biocatalysis in combination with in situ product extraction with an organic solvent was demonstrated. Production was highly dependent on the used CoA ligase and polyketide...
Source: Bioresource Technology - September 17, 2023 Category: Biotechnology Authors: Tobias Schwanemann Esther A Urban Christian Eberlein Jochem G ätgens Daniela Rago Nicolas Krink Pablo I Nikel Hermann J Heipieper Benedikt Wynands Nick Wierckx Source Type: research
Carbonyl products of ozone oxidation of volatile organic compounds can modulate olfactory choice behavior in insects
We examined the effects of ozone-generated small carbonyls on the olfactory behavior of the vinegar fly Drosophila melanogaster. We compiled a broad collection of neurophysiologically relevant odorants for the fly from databases and literature and predicted the formation of the types of stable small carbonyl products resulting from the odorant's oxidation by ozone. Based on these predictions, we evaluated the olfactory detection and behavioral impact of the ten most frequently predicted carbonyl products in the fly using single sensillum recordings (SSRs) and behavioral tests. Our results demonstrate that the fly's olfacto...
Source: Environmental Pollution - September 17, 2023 Category: Environmental Health Authors: Vignesh Venkateswaran Ibrahim Alali Anjana Unni Jerrit Weissflog Rayko Halitschke Bill S Hansson Markus Knaden Source Type: research
Production of extracellular superoxide radical in microorganisms and its environmental implications: A review
Environ Pollut. 2023 Sep 15:122563. doi: 10.1016/j.envpol.2023.122563. Online ahead of print.ABSTRACTExtracellular superoxide radical (O2•-) is ubiquitous in microbial environments and has significant implications for pollutant transformation. Microbial extracellular O2•- can be produced through multiple pathways, including electron leakage from the respiratory electron transport chain (ETC), NADPH oxidation by the transmembrane NADPH oxidase (NOX), and extracellular reactions. Extracellular O2•- significantly influences the geochemical processes of various substances, including toxic metals and refractory organic po...
Source: Environmental Pollution - September 17, 2023 Category: Environmental Health Authors: Zhanfei He Qunqun Li Yao Xu Daoyong Zhang Xiangliang Pan Source Type: research
Effervescent tablet-assisted deep eutectic solvent based on magnetic nanofluid for liquid phase microextraction of tyrosine kinase inhibitors in plasma samples by high-performance liquid chromatography
CONCLUSIONS: The developed method displayed high sensitivity, low consumption of solvent, low cost, simplicity, high recoveries, short extraction time, and good repeatability for determination of three anti-cancer drugs in human plasma samples.PMID:37717246 | DOI:10.1007/s43440-023-00524-x
Source: Pharmacological Reports - September 17, 2023 Category: Drugs & Pharmacology Authors: Khosrou Abdi Maryam Ezoddin Laleh Adlnasab Bahar Aziz Kabiri Mohammad Ali Karimi Somaye Behnamipour Houman Alimoradi Source Type: research
Prussian blue analogues derived magnetic FeCo@GC material as high-performance metallic peroxymonosulfate activators to degrade tetrabromobisphenol A over a wide pH range
In this study, a magnetic composite material derived from MOF was synthesised and used as a new catalyst for rapid degradation of tetrabromobisphenol A (TBBPA). Compared to precarbonisation, FeCo@GC formed a conductive graphite carbon skeleton, retained the complete rhombododecahedron structure, had a larger specific surface area and provided more active sites for peroxymonosulfate (PMS) activation. The target pollutant TBBPA (20 mg/L) was completely degraded within 30 min, and the mineralisation rate reached 40.98% in the FeCo@GC (150 mg/L) and PMS (1 mM) systems, owing to the synergistic interaction between Fe, Co and gr...
Source: Environmental Science and Pollution Research International - September 17, 2023 Category: Environmental Health Authors: Liu Qian Hui Li Dengsong Zhang Lin Guo Wenxue Pan Jin Zhang Minghui Xiang Source Type: research
Metal-Organic Framework Based Fluorescent Probe Device DOX-BOD@ZIF-8 for the Detection of Doxycycline
New J. Chem., 2023, Accepted Manuscript DOI: 10.1039/D3NJ03211F, PaperJia Gao, Xiaolong Sun, Huayue Zhua, Ru Jiang, Qing Guo, Xuankai Ding, jiahuan hu, Yifeng Wang, Yufeng Zhou, Lingzhi Ding, Yongqian Fu Fluorescence analysis using fluorescent probe as a tool is one of the most important technical methods in the field of substance detection, but fluorescent probes have problems such as poor... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - New J. Chem. latest articles - September 16, 2023 Category: Chemistry Authors: Jia Gao Source Type: research
Two-dimensional layered MoSe < sub > 2 < /sub > /graphene oxide (GO) nanohybrid coupled with the specific immune-recognition element for rapid detection of endosulfan
In conclusion, we hypothesized that the synthesized TMC nanohybrids could be employed for biosensing of endosulfan, and can likely be developed to test field samples.PMID:37716396 | DOI:10.1016/j.envres.2023.117127
Source: Environmental Research - September 16, 2023 Category: Environmental Health Authors: Maitri Shah Pratik Kolhe Sonu Gandhi Source Type: research
Electroactive biocake layer-driven advanced removal of dissolved organic matter at membrane interface of anaerobic electrochemical membrane bioreactor
In this study, we activated and reconstructed the bio-cake by using the carbon nanotube membrane (25 cm2 area, 17 LMH flux) as the anode in an anaerobic membrane bioreactor (AnMBR), and investigated its positive role in advanced removal of dissolved organic matter from up-flow anaerobic sludge bed unit (3 L/d) when treating synthetic municipal wastewater. At the anodic membrane interface, the enhanced biodegradation was proved to dominate the DOM reduction (contribution >40%), controlling the effluent COD as low as 19.2 ± 2.5 mg/L. Bio-cake characterizations suggested that the positive potential induced electroactive i...
Source: Cell Research - September 16, 2023 Category: Cytology Authors: Peijin Cheng Chen Wang Xuejie Zhao Jieyi Liu Xiangyang Xu Liang Zhu Source Type: research
Evaluating hs-cTnI serum levels and cTnI gene expression compared with cardiac nuclear scan in patients with angina pectoris
Cell Mol Biol (Noisy-le-grand). 2023 Jul 31;69(7):98-103. doi: 10.14715/cmb/2023.69.7.16.ABSTRACTExercise stress can cause reversible myocardial ischemia in people with coronary artery disease (CAD). On the other hand, the new troponin biomarker with high sensitivity can detect faster and small amounts of troponin in blood circulation. The present study aimed to investigate the serum troponin level following exercise stress and the result of nuclear heart scans as the gold standard. For this purpose, 93 patients with stable angina and no history of known CAD and organic disease were included in this cross-sectional study. ...
Source: Mol Biol Cell - September 16, 2023 Category: Molecular Biology Authors: Guifang Zhang Jiang Zhan Hong Lei HaiYan Zhu Xiaowei He Source Type: research
