The author of 《Metabolite Responsive Nanoparticle-Protein Complex》 were Fruehauf, Krista R.; Kim, Tae Il; Nelson, Edward L.; Patterson, Joseph P.; Wang, Szu-Wen; Shea, Kenneth J.. And the article was published in Biomacromolecules in 2019. Formula: C4H5ClO3 The author mentioned the following in the article:
Stimuli-responsive polymers are an efficient means of targeted therapy. Compared to conventional agents, they increase bioavailability and efficacy. In particular, polymer hydrogel nanoparticles (NPs) can be designed to respond when exposed to a specific environmental stimulus such as pH or temperature However, targeting a specific metabolite as the trigger for stimuli response could further elevate selectivity and create a new class of bioresponsive materials. In this work we describe an N-isopropylacrylamide (NIPAm) NP that responds to a specific metabolite, characteristic of a hypoxic environment found in cancerous tumors. NIPAm NPs were synthesized by copolymerization with an oxamate derivative, a known inhibitor of lactate dehydrogenase (LDH). The oxamate-functionalized NPs (OxNP) efficiently sequestered LDH to produce an OxNP-protein complex. When exposed to elevated concentrations of lactic acid, a substrate of LDH and a metabolite characteristic of hypoxic tumor microenvironments, OxNP-LDH complexes swelled (65%). The OxNP-LDH complexes were not responsive to structurally related small mols. This work demonstrates a proof of concept for tuning NP responsiveness by conjugation with a key protein to target a specific metabolite of disease. The results came from multiple reactions, including the reaction of Ethyl oxalyl monochloride(cas: 4755-77-5Formula: C4H5ClO3)
Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Formula: C4H5ClO3
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