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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Multiplex pre-amplification for noninvasive genetic sampling: is the extra effort worth it?

M DE Barba¹, L P Waits

¹Department of Fish & Wildlife Resources, University of Idaho, PO Box 441136, Moscow, ID 83844-1136, USA.

Molecular Ecology Resources

|May 14, 2011

Summary

Multiplex pre-amplification did not improve microsatellite genotyping success rates for brown bear noninvasive genetic sampling. Researchers should evaluate this method

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Area of Science:

Wildlife genetics
Conservation biology
Molecular ecology

Background:

Noninvasive genetic sampling is crucial for studying elusive species like the brown bear (Ursus arctos).
Previous studies suggested polymerase chain reaction (PCR) methods had low success and high error rates for brown bear genotyping.
Multiplex pre-amplification was proposed as a method to enhance genotyping accuracy.

Purpose of the Study:

To evaluate the effectiveness of multiplex pre-amplification for improving microsatellite genotyping in brown bears.
To compare standard PCR with pre-amplification using hair and faeces DNA extracts of varying quality.

Main Methods:

Compared standard PCR with multiplex pre-amplification.
Utilized brown bear faecal DNA extracts (n=33) and hair DNA extracts (poor quality, n=32; good quality, n=34).
Assessed individual locus amplification success, genotyping error, and genotyping success rates.

Main Results:

No significant difference in amplification success, genotyping error, or success rates between standard PCR and pre-amplification.
Pre-amplification did not outperform standard PCR for either hair or faeces samples.
The benefits of pre-amplification were not evident in this study.

Conclusions:

Multiplex pre-amplification may not universally improve noninvasive genetic sampling results for brown bears.
Researchers should conduct thorough evaluations of pre-amplification versus standard PCR with local samples before large-scale implementation.
Careful consideration of time and resource investment is necessary for pre-amplification techniques.