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Advancements in Hydrogel-Functionalized Immunosensing Platforms.

Suchi Mercy George1, Saloni Tandon2, Balasubramanian Kandasubramanian1

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Summary
This summary is machine-generated.

Hydrogel-based immunosensors offer sensitive detection of disease biomarkers and environmental contaminants. These advanced biosensors utilize antigen-antibody binding for highly accurate and rapid analysis.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Analytical Chemistry

Background:

  • Immunosensors, a type of biosensor, leverage specific antigen-antibody interactions for analyte detection.
  • Hydrogels are ideal for immunosensor fabrication due to their porous structure, large surface area, and biocompatibility, preserving biomolecule activity.
  • Various hydrogel materials (e.g., polycarboxylate, chitosan) combined with nanomaterials (e.g., AuNPs, GO) enhance electron transfer for improved sensing.

Purpose of the Study:

  • To review hydrogel-functionalized immunosensing platforms for detecting diverse analytes.
  • To classify these platforms based on their signal transduction mechanisms.
  • To highlight their application in detecting cancer biomarkers, hormones, and contaminants.

Main Methods:

  • Fabrication of hydrogel-based immunosensors using various polymers and nanomaterials.
  • Integration of signal transduction strategies including surface plasmon resonance, electrochemiluminescence, colorimetric, and electrochemical assays.
  • Evaluation of immunosensor performance characteristics such as sensitivity, selectivity, and detection limits.

Main Results:

  • Hydrogel-based immunosensors demonstrate rapid response, high stability, reproducibility, selectivity, and sensitivity.
  • These sensors achieve ultralow limits of detection, comparable to ELISA tests.
  • Platforms are effective for detecting cancer biomarkers (e.g., AFP, PSA), hormones (e.g., hCG), and ractopamine.

Conclusions:

  • Hydrogel-based immunosensors represent a promising technology for sensitive and selective analyte detection in biomedical and environmental fields.
  • The versatility of hydrogels and various signal transduction methods enable the development of robust and efficient immunosensing platforms.
  • These immunosensors offer significant advantages for early disease diagnosis and monitoring of contaminants.