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Francesca Drago¹, Katerina Karpasitou, Francesca Poli

¹Dipartimento di Medicina Rigenerativa - Immunologia dei Trapianti di Organi e Tessuti, Fondazione IRCCS, Ospedale Maggiore Policlinico, Milan, Italy.

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Summary

This summary is machine-generated.

A new high-throughput genotyping system uses Luminex technology for blood group allele typing. This cost-effective method enables mass screening of red blood cell alleles for transfusion medicine.

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Area of Science:

Molecular Biology
Immunogenetics
Biotechnology

Background:

Accurate blood group genotyping is crucial for transfusion medicine and preventing transfusion reactions.
Existing methods for blood group allele typing can be time-consuming and costly.
High-throughput methods are needed for large-scale population screening and clinical applications.

Purpose of the Study:

To develop and validate a high-throughput system for single nucleotide polymorphism (SNP) genotyping of diverse blood group alleles.
To utilize Luminex technology for efficient and accurate allele typing.
To provide a cost-effective solution for mass screening of red blood cell alleles.

Main Methods:

Development of a multiplexed assay using Luminex technology with specific oligonucleotide probes and fluorescent microspheres.
Two multiplex polymerase chain reaction (PCR) reactions designed for routine and less frequent allele typing.
Hybridization of biotinylated PCR products with probe mixtures, followed by detection using R-phycoerythrin-conjugated streptavidin and Luminex 100 analysis.

Main Results:

Successful genotyping of over 2,000 subjects, with 493 analyzed using the multiplex assay.
No discrepancies observed between genotyping results and serology, except for null and/or weak phenotypes.
The cost for consumables and reagents per typed biallelic pair is under EUR 3, excluding DNA extraction.

Conclusions:

The developed Luminex-based system offers a high-throughput, cost-effective, and accurate method for blood group allele genotyping.
The multiplexing capability makes this approach highly suitable for mass screening of red blood cell alleles.
This genotyping tool is a valuable asset for advancing transfusion medicine practices.