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Effects of LinTT1-peptide conjugation on the properties of poly(ethylene glycol)-block-(ε-caprolactone) nanoparticles prepared by the nanoprecipitation method.
Drug Deliv Transl Res
January 2025
Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, FI-00014, Finland.
Functionalization of polymer nanoparticles (NPs) with targeting peptides is of interest for drug delivery applications to enhance tumor accumulation and penetration. Herein, we evaluated the feasibility of two different methods for the attachment of a tumor-penetrating peptide LinTT1 (AKRGARSTA) to poly(ethylene glycol)-block-poly(ε-caprolactone) (PCL-PEG) NPs: (1) "post-conjugation" onto pre-formed nanoparticles, and (2) "pre-conjugation", the synthesis and purification of peptide-polymer conjugates and subsequent nanoprecipitation of the conjugates diluted with non-functionalized polymers. Conjugation of the labelled peptide via maleimide-thiol chemistry was verified by gel permeation chromatography (GPC) and fluorescence measurements.
View Article and Find Full Text PDFCharacterization and metabolomic profiling of endophytic bacteria isolated from Moringa oleifera and Piper betel leaves.
Sci Rep
January 2025
Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh, India.
Endophytes are microorganisms residing in plant tissues without causing harm and their relevance in medicinal plants has grown due to their biomolecules used in pharmaceuticals. This study isolated two endophytic bacterial strains from the leaves of M. oleifera and P.
View Article and Find Full Text PDFMulti-modal comparison of molecular programs driving nurse cell death and clearance in Drosophila melanogaster oogenesis.
PLoS Genet
January 2025
Department of Biology, Boston University, Boston Massachusetts, United States of America.
The death and clearance of nurse cells is a consequential milestone in Drosophila melanogaster oogenesis. In preparation for oviposition, the germline-derived nurse cells bequeath to the developing oocyte all their cytoplasmic contents and undergo programmed cell death. The death of the nurse cells is controlled non-autonomously and is precipitated by epithelial follicle cells of somatic origin acquiring a squamous morphology and acidifying the nurse cells externally.
View Article and Find Full Text PDFYAP1::TFE3 fusion in a case of malignant TFE3-rearranged PEComa of the lung: expanding the spectrum of pulmonary PEComa-like mesenchymal neoplasms.
Virchows Arch
January 2025
Division of Thoracic Surgery, University Health Network, Toronto, ON, Canada.
Article Synopsis
- The family of PEComa consists of various mesenchymal tumors with myomelanocytic characteristics, including a unique type linked to TFE3 gene rearrangement.
- Recent findings show that the YAP1::TFE3 fusion is present in clear cell stromal tumors of the lung and certain inflammatory spindle cell PEComas, though the connection between these two remains uncertain.
- This report details a case of pulmonary malignant PEComa with TFE3 rearrangement that also has the YAP1::TFE3 fusion, contributing to the understanding of the characteristics and genetic factors of lung neoplasms related to PEComa.
Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
The University of Texas at San Antonio, San Antonio, TX, USA.
Background: Neurodegeneration is characterized by the progressive loss of neurons. However, the mechanisms by which neurons die in Alzheimer's disease (AD) remain elusive. Disrupted iron homeostasis is associated with accelerated cognitive decline, amyloid beta deposition, and AD progression, but its pathogenic relevance is poorly understood.
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