The syntheses of perdeuterated phytoalexins nasturlexins A and C, and putative biosynthetic precursors, including phenylethyl isothiocyanates and phenylethyl dithiocarbamates, using commercially available [2,3,4,5,6-D ]phenylalanine, [2,3,4,5,6-D ]nitrobenzene, and [2,3,4,5,6-D ]benzaldehyde are described. In addition, application of an efficient deuterium-hydrogen exchange transformation to nonlabeled starting materials allowed access to new deuterated compounds, including 3-hydroxyphenylethyl glucosinolate.
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http://dx.doi.org/10.1002/jlcr.3591 | DOI Listing |
Protein Sci
February 2025
Cell Physiology and Molecular Biophysics Department, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.
Purifying membrane proteins has been the limiting step for studying their structure and function. The challenges of the process include the low expression levels in heterologous systems and the requirement for their biochemical stabilization in solution. The human voltage-gated proton channel (hH1) is a good example of that: the published protocols to express and purify hH1 produce low protein quantities at high costs, which is an issue for systematically characterizing its structure and function.
View Article and Find Full Text PDFStem Cell Res Ther
January 2025
Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, Prince Philip Dental Hospital, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Hong Kong, Hong Kong SAR.
Background: Achieving a stable vasculature is crucial for tissue regeneration. Endothelial cells initiate vascular morphogenesis, followed by mural cells that stabilize new vessels. This study investigated the in vivo effects of Sema4D-Plexin-B1 signaling on stem cells from human exfoliated deciduous teeth (SHED)-supported angiogenesis, focusing on its mechanism in PDGF-BB secretion.
View Article and Find Full Text PDFBiochemistry (Mosc)
December 2024
Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
Food safety is one of the primary demands of modern society. Mycotoxins are toxic metabolites of food-contaminating fungi. Fungi enter the food chain by infecting crops and irreversibly contaminate them due to the structural stability of mycotoxins.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; School of Biological and Chemical Engineering, NingboTech University, Ningbo 315100, China; Jinhua Advanced Research Institute, Jinhua 321019, China. Electronic address:
Salvianic acid A (SAA) is a catechol compound known for its diverse physiochemical functions and has significant applications in the food and pharmaceutical industries. 4-Hydroxyphenylacetate-3-hydroxylase (4HPA3H) is a critical enzyme for SAA biosynthesis, and improving its activity towards p-hydroxyphenyllactate acid (4HPLA) is essential for highly efficient SAA production in stable biosynthetic pathways. To address this, the distal site and loops of the substrate pocket were modified to improve 4HPA3H catalytic activity towards 4HPLA using computer-aided molecular modification methods.
View Article and Find Full Text PDFJ Control Release
January 2025
Asymmetric Synthesis and Functional Nanosystems Group (Art&Fun), Institute of Chemical Research (IIQ), CSIC-University of Seville, C/ Américo Vespucio 49, 41092 Seville, Spain. Electronic address:
In this study, we present the first comparative analysis of active and passive drug delivery systems for docetaxel (DTX) in prostate cancer using supramolecular self-assembled micellar nanovectors. Specifically, we developed two novel micelles based on polydiacetylenic amphiphiles (PDA) for passive and active targeting. The active targeting micelles were designed with a prostate-specific membrane antigen (PSMA) ligand, ACUPA, to facilitate recognition by PSMA-positive cancer cells.
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