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Related Concept Videos

Mutations in Microorganisms01:18

Mutations in Microorganisms

74
Mutations are heritable changes in an organism’s genome involving alterations in the base sequence of DNA or RNA. These changes can influence cellular processes and phenotypic traits, potentially transforming the unaltered wild type into a mutant form. Such changes, termed forward mutations, are pivotal in shaping the genetic diversity of organisms.RNA viruses exhibit the highest mutation rates due to the absence of robust proofreading mechanisms during genome replication. In contrast,...
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Updated: Sep 7, 2025

Wild-type Blocking PCR Combined with Direct Sequencing as a Highly Sensitive Method for Detection of Low-Frequency Somatic Mutations
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Recent Developments in Mutation Enrichment and Detection Technologies.

Farzaneh Darbeheshti1, Fangyan Yu1, Farzana Ahmed1

  • 1Department of Radiation Oncology, Dana Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.

Clinical Chemistry
|June 18, 2022
PubMed
Summary
This summary is machine-generated.

New mutation enrichment technologies reduce wild-type DNA (wtDNA) to improve detection of low-level mutations, crucial for cancer diagnostics and liquid biopsies. These advancements enhance sensitivity for critical clinical insights.

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Area of Science:

  • Biotechnology
  • Molecular Diagnostics
  • Genomics

Background:

  • Excess wild-type DNA (wtDNA) can obscure low-level mutations, hindering diagnosis and treatment in fields like oncology and prenatal testing.
  • Mutation enrichment techniques developed since the 1990s aim to reduce wtDNA, enabling the detection of clinically significant rare mutations.
  • The rise of liquid biopsies for cancer monitoring and early detection fuels demand for advanced mutation enrichment and detection methods.

Purpose of the Study:

  • To review and categorize recent technological advancements in rare mutation enrichment.
  • To evaluate these technologies based on requirements for liquid biopsy applications, including improved limits of detection (LOD) and high multiplexity.
  • To provide an updated overview of mutation enrichment technologies, complementing earlier reviews.

Main Methods:

  • Grouping newly developed mutation enrichment technologies by operational principles: PCR-blocking, enzymatic, and physicochemical approaches.
  • Highlighting specific technologies like NaME-PrO and UVME for pre-PCR wtDNA blockage to prevent PCR errors.
  • Discussing methods such as MAESTRO for high multiplexity enrichment compatible with next-generation sequencing.

Main Results:

  • Emerging technologies focus on pre-PCR wtDNA blockage and high-throughput sequencing compatibility.
  • New methods address the need for enhanced sensitivity and multiplexing required for liquid biopsy applications.
  • The review assesses current technologies against criteria including accuracy, speed, cost-effectiveness, LOD, and parallel processing capabilities.

Conclusions:

  • Recent advancements in mutation enrichment technologies are critical for overcoming the challenge of detecting low-level mutations in complex DNA samples.
  • These refined techniques, particularly those enabling pre-PCR wtDNA reduction and high multiplexity, are vital for the expanding field of liquid biopsies.
  • Continued innovation in mutation enrichment is essential to meet the growing demand for sensitive, accurate, and cost-effective diagnostic tools in personalized medicine.