Label-Free Physical Techniques and Methodologies for Proteins Detection in Microfluidic Biosensor Structures

Proteins in biological fluids (blood, urine, cerebrospinal fluid) are important biomarkers of various pathological conditions. Protein biomarkers detection and quantification have been proven to be an indispensable diagnostic tool in clinical practice. There is a growing tendency towards using portable diagnostic biosensor devices for point-of-care (POC) analysis based on microfluidic technology as an alternative to conventional laboratory protein assays. In contrast to universally accepted analytical methods involving protein labeling, label-free approaches often allow the development of biosensors with minimal requirements for sample preparation by omitting expensive labelling reagents. The aim of the present work is to review the variety of physical label-free techniques of protein detection and characterization which are suitable for application in micro-fluidic structures and analyze the technological and material aspects of label-free biosensors that implement these methods. The most widely used optical and impedance spectroscopy techniques: absorption, fluorescence, surface plasmon resonance, Raman scattering, and interferometry, as well as new trends in photonics are reviewed. The challenges of materials selection, surfaces tailoring in microfluidic structures, and enhancement of the sensitivity and miniaturization of biosensor systems are discussed. The review provides an overview for current advances and future trends in microfluidics integrated technologies for label-free protein biomarkers detection and discusses existing challenges and a way towards novel solutions.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

Biomedicines - 10(2022), 2 vom: 18. Jan.

Sprache:

Englisch

Beteiligte Personen:

Konoplev, Georgii [VerfasserIn]
Agafonova, Darina [VerfasserIn]
Bakhchova, Liubov [VerfasserIn]
Mukhin, Nikolay [VerfasserIn]
Kurachkina, Marharyta [VerfasserIn]
Schmidt, Marc-Peter [VerfasserIn]
Verlov, Nikolay [VerfasserIn]
Sidorov, Alexander [VerfasserIn]
Oseev, Aleksandr [VerfasserIn]
Stepanova, Oksana [VerfasserIn]
Kozyrev, Andrey [VerfasserIn]
Dmitriev, Alexander [VerfasserIn]
Hirsch, Soeren [VerfasserIn]

Links:

Volltext

Themen:

Diagnostic devices
Impedance spectroscopy
Journal Article
Label-free biosensor
Microfluidics
Optical biosensors
Plasmon resonance
Point-of-care
Proteins detection
Review

Anmerkungen:

Date Revised 02.11.2023

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/biomedicines10020207

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM33734969X