Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Development of a DELFIA method to detect oncofetal antigen ROR1-positive exosomes

Hina Daikuzono, Masaya Yamazaki, Yoshifumi Sato, Takashi Takahashi, Kazuya Yamagata

Biochemical and Biophysical Research Communications · 2021

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Summary

This 2021 laboratory study describes the development and optimisation of a dissociation-enhanced lanthanide fluorescence immunoassay (DELFIA) for sensitive and specific detection of ROR1-positive exosomes, an oncofetal antigen relevant to cancer biomarker research. The authors characterised analytical performance metrics to establish the assay's utility as a non-invasive diagnostic tool for circulating exosomes. Whilst methodologically rigorous within cancer diagnostics, the work is not directly relevant to farming systems, soil health, or food-derived nutrient composition.

UK applicability

This laboratory methodology paper has minimal direct applicability to UK agricultural or food systems research. It may inform future clinical diagnostic protocols in UK cancer screening programmes, but does not address farming practices, soil management, or nutritional composition of food products.

Key measures

Assay sensitivity and specificity for ROR1-positive exosome detection; analytical performance parameters of the DELFIA platform; optimisation conditions for circulating exosome measurement

Outcomes reported

The study reports the development and analytical characterisation of a DELFIA-based immunoassay platform for detecting ROR1-positive exosomes in circulation. Performance metrics including sensitivity, specificity, and assay optimisation parameters were evaluated to establish the assay's suitability as a biomarker detection tool.

Theme
Measurement & metrics
Subject
Measurement methods & nutrient profiling
Study type
Research
Study design
Laboratory methodological study
Source type
Peer-reviewed study
Status
Published
Geography
Japan
System type
Laboratory / in vitro
DOI
10.1016/j.bbrc.2021.08.054
Catalogue ID
BFmoc27ms1-3cny3l

Topic tags

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