AI Article Synopsis

  • The study presents the crystal structure of a glycosylated porphyrin system, where two galactose units are linked to a substituted tetra-aryl porphyrin, revealing a planar porphyrin framework with galactose groups positioned above and below it.
  • This unique orientation prevents H-type aggregation between porphyrins, which may improve their effectiveness as photosensitizers for photodynamic therapy.
  • The crystal network exhibits significant non-bonding interactions (C-H⋯O and C-H⋯π) and favorable π-π interactions between tolyl groups of adjacent porphyrins, contributing to the structural stability.

Article Abstract

The crystal structure of a glycosyl-ated porphyrin () system, CHNO, where two iso-propyl-idene protected galactose moieties are attached to the position of a substituted tetra-aryl porphyrin is reported. This structure reveals that the parent porphyrin is planar, with the galactose moieties positioned above and below the porphyrin macrocycle. This orientation likely prevents porphyrin-porphyrin H-type aggregation, potentially enhancing its efficiency as a photosensitizer in photodynamic therapy. Notable non-bonding C-H⋯O and C-H⋯π inter-actions among adjacent systems are observed in this crystal network. Additionally, the tolyl groups of each porphyrin can engage in π-π inter-actions with the delocalized π-systems of neighboring porphyrins.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11660175PMC
http://dx.doi.org/10.1107/S2414314624010289DOI Listing

Publication Analysis

Top Keywords

galactose moieties
8
porphyrin
5
-515-bis[3-iso-propyl-idenegalacto-pyran-oxyphen-yl]-1020-bis-4-methyl-phen-ylporphyrin crystal
4
crystal structure
4
structure glycosyl-ated
4
glycosyl-ated porphyrin
4
porphyrin system
4
system chno
4
chno iso-propyl-idene
4
iso-propyl-idene protected
4

Similar Publications

The crystal structure of a glycosyl-ated porphyrin () system, CHNO, where two iso-propyl-idene protected galactose moieties are attached to the position of a substituted tetra-aryl porphyrin is reported. This structure reveals that the parent porphyrin is planar, with the galactose moieties positioned above and below the porphyrin macrocycle. This orientation likely prevents porphyrin-porphyrin H-type aggregation, potentially enhancing its efficiency as a photosensitizer in photodynamic therapy.

View Article and Find Full Text PDF

In order to cope with the massive tissue bleeding caused by sudden trauma and the demand for bioengineering materials with adjustable wet adhesion properties, this study formed the first layer of network by adding galactomannan (GG) and collagen (Col) structure, and then use the Fe-urushiol (UH) redox system to activate free radicals to initiate the polymerization of acrylic acid (AA) to quickly form an interpenetrating double network hydrogel. The cis hydroxyl group in GG and the hydroxyl group of UH form dynamic covalent borate ester bonds with borate ions in the borax solution, and use their responsiveness to pH to control the catechol group to achieve controllable adhesion. UH and Fe endowed the hydrogel with excellent antibacterial ability, while adding Col enhanced the mechanical properties of the hydrogel.

View Article and Find Full Text PDF

Synthesis of a Small Library of Glycoderivative Putative Ligands of SGLT1 and Preliminary Biological Evaluation.

Molecules

October 2024

Department of Earth and Environmental Sciences DISAT, Università degli Studi di Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy.

Sodium-glucose co-transporter 1 (SGLT1) is primarily expressed on the membrane of enterocytes, a type of epithelial cell found in the intestines, where it mediates the unidirectional absorption of glucose and galactose. Beyond its well-established role in nutrient absorption, SGLT1 also plays a protective role in maintaining the integrity of the intestinal barrier. Specifically, the natural ligand of SGLT1 (d-glucose) and a synthetic -glucoside developed by our group can induce a protective anti-inflammatory effect on the intestinal epithelium.

View Article and Find Full Text PDF

The potential of chimeric antigen receptor (CAR)-based immunotherapy as a promising therapeutic approach is often hindered by the presence of highly immunosuppressive tumor microenvironments (TME). Combination therapies with either co-administration or built-in expression of additional TME-modulating therapeutic molecules to potentiate the functions of CAR-T cells can cause systemic toxicities due to the lack of control over the delivery of biologics. Here, we present a proof-of-concept engineered platform in human Jurkat T cells that combines CAR with a therapeutic gene circuit capable of sensing -galactosidase (a reported cancer-associated signal) and subsequently activate the production of customized therapeutic gene products.

View Article and Find Full Text PDF

Prodrug-type oligonucleotides (prodrug-ONs) are a class of oligonucleotide designed for activation under specific intracellular conditions or external stimuli. Prodrug-ONs can be activated in the target tissues or cells, thereby reducing the risk of adverse effects. In this study, we synthesized prodrug-type oligodeoxynucleotides activated by β-galactosidase, an enzyme that is overexpressed in cancer and senescent cells.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: