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Donor-acceptor conjugated porous polymers from truxene and triazine: Effect of connecting units on photocatalytic activity for selective oxidation of amines and sulfides.
J Colloid Interface Sci
December 2024
College of Chemistry and Chemical Engineering, Taishan University, Taian 271000, China. Electronic address:
Donor-acceptor (D-A) conjugated polymers have been widely reported as promising photocatalysts for organic conversion. However, achieving excellent photocatalytic performance still relies on the rational design of molecular structures and the careful selection of appropriate building blocks. In this study, we designed two D-A type conjugated porous polymers (CPPs) using 2,7,12-tribromo-5,5,10,10,15,15-hexamethyl-10,15-dihydro-5H-diindeno[1,2-a:1',2'-c]fluorene (Tx) as the donor unit and two 1,3,5-triazine-based derivatives, namely 2,4,6-tri(thiophen-2-yl)-1,3,5-triazine (TTT) and 2,4,6-triphenyl-1,3,5-triazine (TPT), as the acceptor units.
View Article and Find Full Text PDFThe impact of PD-1/PD-L1, CTLA-4, TIM-3 and LAG-3 immune checkpoint receptor expression in the development of acute graft versus host disease (aGVHD) and disease recurrence after allogeneic hematopoietic stem cell transplantation.
Hum Immunol
December 2024
Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Electronic address:
The immune checkpoint receptors play a crucial role in managing the transplantation outcome including development of acute graft versus host disease (aGVHD) and disease recurrence following allogeneic hematopoietic stem cell transplantation (allo-HSCT) is well established. This study aimed to investigate the expression of immune checkpoint receptors, including PD-1/PD-L1, CTLA-4, TIM-3, and LAG-3 in donors, as well as changes in their expression during the first 90 days (day 30 and day 90) post-HLA-matched allo-HSCT, concerning the development of aGVHD and disease relapse. Forty-one donor/recipient pairs were included in this study.
View Article and Find Full Text PDFThe burden of medical contraindications to corneal donation: Time for review.
PLOS Glob Public Health
December 2024
Laboratory Biology, Engineering and Imaging for Ophthalmology, Health Innovation Campus, Faculty of Medicine, University Jean Monnet, Saint-Etienne, France.
Corneal graft (keratoplasty) is the most common allograft in the world, but the imbalance between the number of donors and the number of patients waiting for transplants is abysmal on a global scale and varies enormously from one country to another. The risk of transmission of systemic diseases from donor to recipient is demonstrably low. In over 50 years and an estimated 2.
View Article and Find Full Text PDFMolecular Mechanisms Underlying the Loop-Closing Dynamics of β-1,4 Galactosyltransferase 1.
J Chem Inf Model
December 2024
Xuzhou College of Industrial Technology, Xuzhou 221140, Jiangsu Province, China.
The β-1,4 galactosylation catalyzed by β-1,4 galactosyltransferases (β4Gal-Ts) is not only closely associated with diverse physiological and pathological processes in humans but also widely applied in the -glycan modification of protein glycoengineering. The loop-closing process of β4Gal-Ts is an essential intermediate step intervening in the binding events of donor substrate (UDP-Gal/Mn) and acceptor substrate during its catalytic cycle, with a significant impact on the galactosylation activities. However, the molecular mechanisms in regulating loop-closing dynamics are not entirely clear.
View Article and Find Full Text PDFCovalent Organic Frameworks for Photocatalytic Hydrogen Peroxide Evolution.
Chemistry
December 2024
Panepistimio Ioanninon, Chemistry, Panepistimioupolis, 45110, Ioannina, GREECE.
Covalent organic frameworks (COFs) are considered advanced class materials due to their exotic structural and optical properties. The abundance of starting monomers with variable linkage motifs may give rise to multiple conformations in either 2D or 3D fashion. Tailoring of the abovementioned properties has facilitated the application of COFs in a wide range of applications, which are strongly correlated with energy conversion schemes.
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