A novel diagnostic method for malaria using loop-mediated isothermal amplification (LAMP) and MinION™ nanopore...

Area of Science:

• Molecular biology
• Parasitology
• Genomics

Background:

• Conventional malaria diagnosis faces limitations.
• A simple and accurate molecular diagnostic method is urgently needed.
• This study introduces a novel approach for malaria detection.

Purpose of the Study:

• To develop and validate a new molecular diagnostic procedure for human malaria.
• To utilize loop-mediated isothermal amplification (LAMP) and nanopore sequencing for Plasmodium species identification.
• To assess the performance of the developed method using clinical samples.

Main Methods:

• Designed specific LAMP primers targeting the 18S-rRNA gene of all five human Plasmodium species.
• Analyzed 63 human blood samples from malaria patients in Indonesia.
• Performed amplicon sequencing of LAMP products using the MinION™ nanopore sequencer for species identification.

Main Results:

• The LAMP method demonstrated high sensitivity with detection limits of 10-100 copies per reaction.
• The LAMP method identified Plasmodium species in 55 out of 63 clinical samples, comparable to nested PCR.
• LAMP amplicon sequencing using MinION™ provided accurate species identification consistent with reference methods.

Conclusions:

• The combined LAMP and MinION™ method is a simple and accurate tool for human Plasmodium species identification.
• This diagnostic approach is suitable for resource-limited settings.
• The method holds potential for improved malaria diagnosis and surveillance.