Development of D-π-A organic dyes for discriminating HSA from BSA and study on dye-HSA interaction.
Bioorg Chem
; 147: 107360, 2024 Jun.
Article
de En
| MEDLINE
| ID: mdl-38604019
ABSTRACT
HSA (human serum albumin), a most abundant protein in blood serum, plays a key role in maintaining human health. Abnormal HSA level is correlated with many diseases, and thus has been used as an essential biomarker for therapeutic monitoring and biomedical diagnosis. Development of small-molecule fluorescent probes allowing the selective and sensitive recognition of HSA in in vitro and in vivo is of fundamental importance in basic biological research as well as medical diagnosis. Herein, we reported a series of new synthesized fluorescent dyes containing D-π-A constitution, which exhibited different optical properties in solution and solid state. Among them, dye M-H-SO3 with a hydrophilic sulfonate group at electron-acceptor part displayed selectivity for discrimination of HSA from BSA and other enzymes. Upon binding of dye M-H-SO3 with HSA, a significant fluorescence enhancement with a turn-on ratio about 96-fold was triggered. The detection limit was estimated to be â¼ 40 nM. Studies on the interaction mechanism revealed that dye M-H-SO3 could bind to site III of HSA with a 11 binding stoichiometry. Furthermore, dye M-H-SO3 has been applied to determine HSA in real urine samples with good recoveries, which provided a useful method for HSA analysis in biological fluids.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Sérumalbumine bovine
/
Colorants fluorescents
/
Sérum-albumine humaine
Limites:
Animals
/
Humans
Langue:
En
Journal:
Bioorg Chem
/
Bioorganic chem
/
Bioorganic chemistry
Année:
2024
Type de document:
Article
Pays de publication:
États-Unis d'Amérique