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Related Experiment Video

Updated: Sep 20, 2025

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Whole-Genome Amplification-Surveying Yield, Reproducibility, and Heterozygous Balance, Reported by STR-Targeting

Ofir Raz1, Liming Tao1, Tamir Biezuner1

  • 1Department of Computer Science and Applied Mathematics, Weizmann Institute of Science, Rehovot 761001, Israel.

International Journal of Molecular Sciences
|June 10, 2022
PubMed
Summary
This summary is machine-generated.

Whole-genome amplification (WGA) methods impact single-cell genomics. Ampli1 maximizes allele uniformity and reproducibility for heterozygous analyses, outperforming other WGA techniques for this specific application.

Keywords:
short tandem repeatssingle cell genomicswhole gemome amplification

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Area of Science:

  • Genomics
  • Molecular Biology

Background:

  • Whole-genome amplification (WGA) is essential for single-cell genomic analysis.
  • WGA introduces bias and variance, challenging accurate genomic interpretation.
  • Short tandem repeats (STRs) are vital markers in population genetics, forensics, and lineage tracing.

Purpose of the Study:

  • To evaluate and compare WGA methods for single-cell genomic analysis, focusing on STR profiling.
  • To extend previous WGA evaluations to a larger genomic scale using duplex molecular inversion probes.
  • To assess WGA performance for heterozygous analyses in single cells.

Main Methods:

  • Evaluation of common WGA methods, including RepliG-SC and Ampli1.
  • Utilized duplex molecular inversion probes for targeted STR analysis.
  • Expanded STR locus coverage from ~1000 to ~12,000 across the genome.

Main Results:

  • Ampli1 demonstrated maximum uniformity between alleles and reproducibility across cells.
  • RepliG-SC provided the best overall yield.
  • The scaled STR system detected heterogeneous loci, enabling allelic balance reporting.

Conclusions:

  • Ampli1 is the optimal choice for comparative heterozygous analysis in single-cell genomics due to superior uniformity and reproducibility.
  • WGA method selection is critical and depends on the specific downstream genomic application.
  • Advanced WGA techniques with expanded STR coverage enhance single-cell genomic analysis capabilities.