Background: Myocardial ischemia/reperfusion (MI/R) injury is the main cause of death worldwide and poses a significant threat to cardiac health. Ginsenoside Rg1 has been shown to have inhibitory effects on inflammatory activation, oxidative stress, and cardiac injury, suggesting that Rg1 may have therapeutic effects on MI/R injury. However, the mechanism remains to be further studied.
View Article and Find Full Text PDFHow to obtain heteroleptic mononuclear Cu(I) halide complexes with high quantum efficiency and short decay lifetime remains a challenge. Here, seven mononuclear four-coordinate Cu(I) halide complexes [CuX(DCzDP)(PPh)] (DCzDP = 1,2-bis(9-carbazolyl)-4,5-bis(diphenylphosphino)benzene, X = Br (1), Cl (2)), [CuX(DCzDP)(CzP)] (CzP = 9-methyl-3-(diphenylphosphino)carbazole, X = I (3), Br (4), Cl (5)) and [CuX(DCzDP)(DCzP)] (DCzP = bis(9-methyl-3-carbazolyl)phenylphosphine, X = I (6), Br (7)), were synthesized and their structures and photophysical properties were characterized. At room temperature, complexes 1-7 in the powder state emit a yellowish green to yellow green delayed fluorescence ( = 531-560 nm, = 0.
View Article and Find Full Text PDFUnlabelled: is a deciduous plant in the family Araliaceae, which is commonly used in Chinese herbal medicine, as the root bark has functions of nourishing the liver and kidneys, removing dampness and expelling wind, and strengthening the bones and tendons. Kaurenoic acid (KA) is the main effective substance in the root bark of with strong anti-inflammatory effects. To elucidate the KA biosynthesis pathway, second-generation (DNA nanoball) and third-generation (Pacific Biosciences) sequencing were performed to analyze the transcriptomes of the leaves, roots, and stems Among the total 505,880 isoforms, 408,954 were annotated by seven major databases.
View Article and Find Full Text PDFTo reduce the preparation cost of high-purity hydrogen, it is necessary to search suitable non-precious metal catalysts with high activity and robust stability. Herein, two means (heteroatom-doping and the heterostructure construction) were adopted together to improve the dual-function activity of NiFe LDH which was widely used in water electrolysis. Mo doped NiFe LDH nanoflowers were firstly generated by hydrothermal reaction, and then NiS was modified on the petals via electrodeposition.
View Article and Find Full Text PDFMultidrug-resistant tuberculosis (MDR-TB) has become a critical challenge to public health, and the prevention and treatment of MDR-TB are of great significance in reducing the global burden of tuberculosis. How to improve the effectiveness and safety of chemotherapy for MDR-TB is a pressing issue that needs to be addressed in tuberculosis control efforts. This article provides a comprehensive review of the clinical application of new antituberculosis drugs in MDR-TB, aiming to provide a scientific basis for the prevention and treatment strategy of MDR-TB.
View Article and Find Full Text PDFGlechoma longituba has been frequently used in treating urolithiasis and cholelithiasis due to the presence of flavonoids, which are its major bioactive constituents. However, research on the molecular background of flavonoid biosynthesis in G. longituba is limited.
View Article and Find Full Text PDFBioprospecting of more novel probiotic strains has attained continuous interest. This study aimed to investigate the beneficial effects of strain L14, an isolate from a traditional Chinese dairy product, on type 2 diabetes mellitus (T2DM) rats. Preventive supplementation of strain L14 showed excellent anti-diabetic effects on high-fat diet/low-dose streptozotocin (HFD/STZ)-induced T2DM rats.
View Article and Find Full Text PDFRanunculus japonicus Thunb. is a traditional Chinese herb. Plants in the genus Ranunculus are generally rich in flavonoids, which have antibacterial, anti-infective, and other pharmacological effects.
View Article and Find Full Text PDFPI3K/Akt/mTOR signaling pathway is a validated drug target for cancer treatment that plays a critical role in controlling tumor growth, proliferation, and apoptosis. However, no FDA-approved PI3K/mTOR dual inhibitor exists. Thus, a candidate with a better curative effect and lower toxicity is still urgently needed.
View Article and Find Full Text PDFLoss of cerebral cholinergic neurons and decreased levels of acetylcholine (ACh) are considered to be major factors causing cognitive dysfunction in Alzheimer's disease (AD). Abnormally elevated levels of acetylcholinesterase (AChE) resulting in decreased levels of ACh are common in AD patients; thus, AChE inhibitors (AChEIs) are widely used for the treatment of AD. In our previous work, we acquired DNA aptamers Ob1, Ob2, and Ob3 against human brain AChE from systematic evolution of ligands by exponential enrichment (SELEX).
View Article and Find Full Text PDFThe viral infectivity factor (Vif)-apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G (APOBEC3G) axis has been recognized as a valid target for developing novel small-molecule therapies for acquired immune deficiency syndrome (AIDS) or for enhancing innate immunity against viruses. Our previous work reported the novel Vif antagonist 2-amino-N-(2-methoxyphenyl)-6-((4-nitrophenyl)sulfonyl)benzamide (2) with strong antiviral activity. In this work, through optimizations of ring C of 2, we discovered the more potent compound 6m with an EC of 0.
View Article and Find Full Text PDFZero-dimensional metal halides have attracted much attention due to their attractive photoelectric properties. Here, we propose a new strategy of synthesizing metal halides crystals by recrystallization in water. The as-synthesized Cs InCl (H O)-orange crystals are dissolved and recrystallized in water (Cs InCl (H O)-blue), with its photoluminescence (PL) changing from orange to blue, both of which are derived from self-trapping excitons (STEs).
View Article and Find Full Text PDFCyclin-dependent kinases 4 and 6 (CDK4/6), which are involved in dynamic regulation of cell cycle, play an indispensable role in controlling the tumor growth. Here, based on the scaffold of palbociclib, we designed and synthesized a series of covalent CDK4/6 inhibitors that targeted amino acid Thr107. The optimized compound C-13 exhibited potent in vitro anticancer activity against CDK4/6 with high selectivity over CDK4/6.
View Article and Find Full Text PDFLuminescent copper(I) halide complexes with bi- and tridentate rigid ligands have gained wide research interests. In this paper, six tetracoordinate dinuclear copper(I) halide complexes, CuX(ppda) [ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-,-dimethylaniline, X = I (), Br (), Cl ()] and CuX(pfda) [pfda = 2-[2-(dimethylamino)-4-(trifluoromethyl)phenyl(phenyl)phosphino]-,-dimethyl-5-trifluoromethylaniline, X = I (), Br (), Cl ()], were successfully prepared and systematically characterized on their structures and photophysical properties. Complexes - have a centrosymmetric form with a planar CuX unit, and complex has a mirror symmetry form with a butterfly-shaped CuX.
View Article and Find Full Text PDFAnticancer Agents Med Chem
January 2022
Background: Coumarin structures were widely employed in anti-cancer drug design. Herein we focused on the modifications of C4 and C6 positions on coumarin scaffold to get novel anti-cancer agents.
Objective: The objective of the current work was the synthesis and biological evaluation of a series of 4, 6-coumarin derivatives to get novel anticancer agents.
Potent inhibitors of ALK are highly desired because of the occurrence of drug resistance. We herein firstly report the development of a rationally designed inhibitor, , which can covalently bind to Cys1259, a cysteine located outside the ALK active site by linking a warhead with Ceritinib through a 2,2'-Oxybis(ethylamine) linker. The and assays showed is a potent selective ALKi with low toxicity to normal cells.
View Article and Find Full Text PDFAnaplastic lymphoma kinase (ALK) was involved in the development of various cancer types. Although several ALK inhibitors have been advanced to clinical trials, the emergence of drug resistance has limited the clinical application of them. To overcome the drug resistance, proteolysis targeting chimeras (PROTACs) could be an alternative strategy.
View Article and Find Full Text PDFProto-oncogene c-Myc plays an essential role in the development of colorectal cancer (CRC), since downregulation of c-Myc inhibits intestinal polyposis, which is the most cardinal pathological change in the development of CRC. Herein, a series of novel phenoxy-N-phenylaniline derivatives were designed and synthesized. The cytotoxicity activities of all the derivatives were measured by MTT assay in different colon cancer cells, 4-(3,5-dimethoxy-4-(((4-methoxyphenethyl)amino)methyl)phenoxy)-N-phenylaniline (42) was discovered, the lead compound 42 with excellent cytotoxicity activity of IC = 0.
View Article and Find Full Text PDFHighly emissive copper(i) halide nanoclusters showing thermally activated delayed fluorescence (TADF) have been paid much attention, but rarely reported so far. Herein, a hexanuclear copper(i) iodide cluster containing a tridentate N∧P∧N ligand, [CuI(ppda)] {ppda = 2-[2-(dimethylamino)phenyl(phenyl)phosphino]-N,N-dimethylaniline}, was synthesized. All six copper atoms are four-coordinate, including four CuPNI and two CuI units.
View Article and Find Full Text PDFPurpose: In this study, we constructed novel brain-targeting complexes (U2-AuNP) by conjugating aptamer U2 to the gold nanoparticle (AuNPs) surface as a promising option for GBM therapy.
Materials And Methods: The properties of the U2-AuNP complexes were thoroughly characterized. Then, we detected the in vitro effects of U2-AuNP in U87-EGFRvIII cell lines and the in vivo antitumor effects of U2-AuNP in GBM-bearing mice.
HDAC6 regulates the expression and activity of various tumor-related proteins, but currently there is no selective inhibitor targeting HDAC6 for clinical application. In order to discover novel HDAC6 inhibitors, virtual screening methods comprised of pharmacophore based virtual screening, molecular docking and molecular dynamics (MD) simulations were employed. 15 molecules were obtained after virtual screening.
View Article and Find Full Text PDFThis study proposed a new automatic measurement method of spinal curvature on ultrasound coronal images in adolescent idiopathic scoliosis (AIS). After preprocessing of Gaussian enhancement, the symmetric information of the image was extracted using the phase congruency. Then bony features were segmented from the soft tissues and background using the greyscale polarity.
View Article and Find Full Text PDFHighly emissive copper(i) halide complexes having thermally activated delayed fluorescence (TADF) have been paid much attention. Here, a series of four-coordinate mononuclear copper(i) halide complexes containing both bi- and mono-phosphine ligands, [CuX(dpmt)(PPh)] (dpmt = 3,4-bis(diphenylphosphino)-2,5-dimethylthiophene, X = I (1), Br (2) and Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. These complexes exhibit intense deep blue emission in crystal state at room temperature and have peak wavelengths at 447-460 nm with microsecond lifetimes (τ = 114-752 μs).
View Article and Find Full Text PDFPI3K/Akt/mTOR signaling pathway plays an important role in cancer cell growth and survival. In this study, a new class of molecules with skeleton of 4-phenyl-2H-benzo[b] [1,4]oxazin-3(4H)-one were designed and synthesized targeting this pathway. Bioassays showed that, among all the molecules, 8d-1 was a pan-class I PI3K/mTOR inhibitor with an IC of 0.
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