Porphyrin-based periodic mesoporous organosilica nanoparticles (PMO) synthesized from a large functional octatriethoxysilylated porphyrin precursor and allowing two-photon excitation photodynamic therapy (TPE-PDT) and NIR imaging were synthesized. These PMO were grafted with polyethylene glycol (PEG) moieties and an analogue of mannose 6-phosphate functionalized at the anomeric position (AMFA). AMFAs are known to efficiently target mannose 6-phosphate receptors (M6PRs) which are over-expressed in various cancers. Here, we demonstrated for the first time that M6PRs were over-expressed in rhabdomyosarcoma (RMS) cells and could be efficiently targeted with PMO-AMFA allowing TPE imaging and TPE-PDT of RMS cells. The comparison with healthy myoblasts demonstrated an absence of biological effects, suggesting a cancer cell specificity in the biomedical action observed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d0bm00586j | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Phosphorylation of N-glycans in the brain: The case for a non-canonical pathway?
BBA Adv
December 2024
Genos Glycoscience Research Laboratory, Zagreb, Croatia.
Asparagine-linked glycosylation (N-glycosylation) is a common co- and post-translational modification that refers to the addition of complex carbohydrates, called N-linked glycans (N-glycans), to asparagine residues within defined sequons of polypeptide acceptors. Some N-glycans can be modified by the addition of phosphate moieties to their monosaccharide residues, thus forming phospho-N-glycans (PNGs). The most prominent such carbohydrate modification is mannose-6-phosphate (M6P) which plays a well-established role in trafficking of acid hydrolases to lysosomes.
View Article and Find Full Text PDFCharacterization of Site-Specific N- and O-Glycopeptides from Recombinant Spike and ACE2 Glycoproteins Using LC-MS/MS Analysis.
Int J Mol Sci
December 2024
Digital Omics Research Center, Korea Basic Science Institute, Ochang 28119, Republic of Korea.
The COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has resulted in hundreds of millions of infections and millions of deaths globally. Although vaccination campaigns are mitigating the pandemic, emerging viral variants continue to pose challenges. The spike (S) protein of SARS-CoV-2 plays a critical role in viral entry by binding to the angiotensin-converting enzyme 2 (ACE2) receptor, making both proteins essential targets for therapeutic and vaccine development.
View Article and Find Full Text PDFTranscriptome and Metabolome Insights into Key Genes Regulating Fat Deposition and Meat Quality in Pig Breeds.
Animals (Basel)
December 2024
Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
Meat quality is a complex trait that exhibits significant variation across pig breeds, and the regulatory mechanisms governing pork meat quality are not fully elucidated. We compared the transcriptomics and metabolomics of the longissimus dorsi (LD) muscle between the Songliao Black Pig (SBP) and Large White × Landrace Pig (LWLDP) to investigate breed-specific differences in meat quality and underlying regulatory pathways. The results showed that SBP meat had a higher marbling score and backfat thickness, a richer color, a lower shear force, and reduced drip loss.
View Article and Find Full Text PDFMolecular Insights into the Regulation of GNPTAB by TMEM251.
bioRxiv
December 2024
Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
In vertebrates, newly synthesized lysosomal enzymes traffick to lysosomes through the mannose-6-phosphate (M6P) pathway. The Golgi membrane protein TMEM251 was recently discovered to regulate lysosome biogenesis by controlling the level of GlcNAc-1-phosphotransferase (GNPT). However, its precise function remained unclear.
View Article and Find Full Text PDFLysosomal Trafficking and Degradation of Extracellular Proteins via Multivalent Small Molecule Ligand Display on Dextran Scaffolds.
Biomacromolecules
January 2025
Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, Ghent 9000, Belgium.
Targeted protein degradation (TPD) marks a shift in drug development from conventional inhibition to the complete removal of pathological proteins. Traditional TPD technologies target intracellular proteins of interest (POIs) for degradation but are ineffective against extracellular cell surface and soluble proteins, a significant portion of the human proteome. Recent advances involve the formation of ternary complexes between a POI and a cell surface lysosomal trafficking receptor, directing POIs to lysosomes for degradation.
View Article and Find Full Text PDFWant 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!