In this paper, we report the preparation of paclitaxel-terminated peptide brush polymers wherein cell uptake and toxicity are tunable based on peptide sequence. Synthesis was enabled using a new paclitaxel-containing chain termination agent for ring-opening metathesis polymerization (ROMP). Critically, reverse phase HPLC could be used to efficiently separate peptide brush polymers consisting of one fluorophore and one terminal paclitaxel from crude polymer mixtures. These purified terminally-modified polymers showed greater potency than the original mixtures. Drug-terminated peptide brush polymers carrying positive charges exhibited enhanced cell uptake and cytotoxicity as compared to their neutral and negatively charged analogues.
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http://dx.doi.org/10.1039/c9cc10023g | DOI Listing |
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
November 2024
Department of Critical Medicine Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China. Corresponding author: Yu Xiangyou, Email:
Objective: To explore the protective effect and mechanism of acetate on sepsis-induced acute kidney injury (AKI) in rats.
Methods: Male Sprague-Dawley (SD) rats were divided into sham operation group (Sham group), sepsis group caused by cecal ligation and puncture (CLP group), and acetate pretreatment group [NaA group, gavage sodium acetate (NaA) 300 mg/kg twice a day for 7 consecutive days before CLP] using a random number table method, with 7 rats in each group. The blood was taken from the main abdominal artery 24 hours after modeling, and renal tissue was collected from the rats.
Cureus
November 2024
Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, PAK.
Background: Maintaining optimal oral health is essential for overall well-being; however, conditions such as dental caries and gingivitis remain prevalent in Pakistan and are further worsened by increasing antibiotic resistance.
Objective: To evaluate the antimicrobial properties of salivary peptides as potential therapeutic agents against common oral pathogens in Pakistan.
Methodology: A one-year cross-sectional study was conducted in Lahore, Pakistan, at Sharif Medical and Dental College and Akhter Saeed Medical and Dental College, involving 384 participants aged 18-65 years.
PLoS Pathog
December 2024
Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.
Food Res Int
December 2024
Institute of Food Sciences, National Research Council (CNR-ISA), Avellino, Italy. Electronic address:
Brush border membrane (BBM) enzymes greatly affect the bioaccessibility and bioavailability of food nutrients. Despite their physiological importance, a step simulating the final stage of intestinal digestion has not yet been included in the harmonized protocols for in vitro digestion, primarily due to the challenges of replicating the dynamics of intestinal degradation. Herein, we propose an advancement toward a more physiologically relevant method, complementing the harmonized static gastric-duodenal digestion INFOGEST model with the missing small intestinal phase.
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