PEGylation of concanavalin A to decrease non-specific interactions in a fluorescent glucose sensor was written by Abraham, Alexander A.;Cummins, Brian M.;Locke, Andrea K.;Grunlan, Melissa A.;Cote, Gerard L.. And the article was included in Proceedings of SPIE in 2014.Safety of 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione This article mentions the following:
The ability of people with diabetes to both monitor and regulate blood sugar levels is limited by the conventional “finger-prick” test that provides intermittent, single point measurements. Toward the development of a continuous glucose monitoring (CGM) system, the lectin, Con A (ConA), has been utilized as a component in a Forster resonance energy transfer (FRET), competitive glucose binding assay. Recently, to avoid reversibility problems associated with ConA aggregation, a suitable competing ligand labeled with 8-aminopyrene-1,3,6-trisulfonic acid trisodium salt (APTS) has been engineered. However, its ability to function as part of a glucose sensing assay is compromised due to the neg. charge (at physiol. pH) of native ConA that gives rise to non-specific binding with other ConA groups as well as with electrostatically charged assay-delivery carriers. To minimize these undesirable interactions, we have conjugated ConA with monomethoxy-poly(ethylene glycol) (mPEG) (i.e. “PEGylation”). In this preliminary research, fluorescently-labeled ConA was successfully PEGylated with mPEG-N-hydroxylsuccinimide(succinimidyl carbonate) (mPEG-NHS(SC)). The FRET response of APTS-labeled competing ligand (donor) conveyed an increase in the fluorescence intensity with increasing glucose concentrations In the experiment, the researchers used many compounds, for example, 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9Safety of 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione).
4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Benzofurans have also made significant and distinctive contributions to biology. They exhibit several biological activities that range from antioxidant, antitubercular, antiplasmodial, insecticidal.Safety of 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem