ArticleBio-protocol2025
Protocol of Whey Protein Isolate-Based Microgel Targeted Delivery in Mouse Kidney.
Article in Bio-protocol, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Every year, there is an increase in the number of cases of chronic kidney disease, and a delay in the initiation of adequate treatment can lead to kidney failure, which requires regular dialysis or transplantation. Intensive systemic therapy used to treat kidney diseases often has a negative impact on other weakened organs, making it crucial to ensure targeted delivery of medications directly to the kidneys and to minimize systemic side effects. In order to reduce the toxicity of medications and decrease dosages, innovative delivery methods are being developed, such as micro-sized targeted delivery systems, which ensure highly effective distribution of encapsulated drugs directly within the organs. In a recent article, we presented innovative emulsified microgels stabilized with whey protein isolate (WPI), specifically designed for targeted drug delivery to the kidneys. Our stability studies revealed that these microgels start to degrade after 72 h, with this degradation exhibiting a time-dependent profile. Furthermore, intravenous administration of the microgel suspension through the tail vein showed significant selective accumulation in both the liver and kidneys over a duration of 5 days. As part of our research, we present the protocol for synthesizing emulsion microgels derived from whey protein isolate. This article provides a comprehensive overview of the procedures for precursor preparation, along with an in-depth investigation of the emulsion system's stability over time. The protocol also includes the injection of an emulsion microgel suspension into the tail vein of mice, enabling the evaluation of their biocompatibility and potential therapeutic efficacy. This protocol outlines the precautions and important nuances that should be considered at each stage of the experiment. Key features • This protocol provides detailed instructions on the synthesis of fluorescently labeled emulsion microgels using mucoadhesive whey protein isolate, allowing the replication of this process. • The protocol describes in detail how to prepare samples for confocal microscopy. • We are exploring a method to study the stability of emulsion microgels by analyzing the size of emulsion droplets using optical microscopy. • We provide guidance on the administration of suspension into the tail vein of mice, followed by visualization of the microgels' body biodistribution.
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