A FRET based ultrasensitive fluorescent aptasensor for 6'-sialyllactose detection.
Anal Biochem
; 688: 115462, 2024 May.
Article
in En
| MEDLINE
| ID: mdl-38246433
ABSTRACT
As a kind of human milk oligosaccharide, 6'-sialyllactose (6'-SL) plays an important role in promoting infant brain development and improving infant immunity. The content of 6'-SL in infant formula milk powder is thus one of the important nutritional indexes. Since the lacking of efficient and rapid detection methods for 6'-SL, it is of great significance to develop specific recognition elements and establish fast and sensitive detection methods for 6'-SL. Herein, using 6'-SL specific aptamer as the recognition element, catalytic hairpin assembly as the signal amplification technology and quantum dots as the signal label, a fluorescence biosensor based on fluorescence resonance energy transfer (FRET) was constructed for ultra-sensitive detection of 6'-SL. The detection limit of this FRET-based fluorescent biosensor is 0.3 nM, and it has some outstanding characteristics such as high signal-to-noise ratio, low time-consuming, simplicity and high efficiency in the actual sample detection. Therefore, it has broad application prospect in 6'-SL detection.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Biosensing Techniques
/
Quantum Dots
/
Aptamers, Nucleotide
/
Lactose
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
Anal Biochem
Year:
2024
Type:
Article