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IP Watch: Recent Patents Related to PCR, Nucleic Acid Amplification, and Sample Prep: Jun 14, 2011


The Cornell Research Foundation has been awarded US Patent No. 7,960,159, "Detection of nucleic acid differences using combined endonuclease cleavage and ligation reactions."

Francis Barany, Weiguo Cao, Jianmin Huang, and Jing Lu are named as inventors on the patent.

Describes a method for detecting DNA sequence differences including single nucleotide mutations or polymorphisms, one or more nucleotide insertions, and one or more nucleotide deletions. Labeled heteroduplex PCR fragments containing base mismatches are prepared. Endonuclease cleaves the fragments both at the position containing the variation (one or more mismatched bases); and, to a lesser extent, at non-variant (perfectly matched) positions. Ligation of the cleavage products with a DNA ligase corrects non-variant cleavages and thus substantially reduces background. This is then followed by a detection step in which the reaction products are detected, and the position of the sequence variations are determined.

Agilent Technologies has been awarded US Patent No. 7,960,157, "DNA polymerase blends and uses thereof."

Michael Borns is named as inventor on the patent.

Discloses novel blends of chimeric and non-chimeric thermostable DNA polymerases for use in PCR, DNA sequencing, and mutagenesis protocols. The invention enables PCR reactions with shorter extension times that will facilitate PCR amplification of genomic DNA templates and improve the efficacy of long PCR, the patent's abstract states.

The Finnish Defence Forces has been awarded US Patent No. 7,960,106, "Diagnostic method and products useful therein."

Simo Nikkari, Tuukka Skottman, and Mikael Skurnik are named as inventors on the patent.

Describes a method for simultaneously detecting and identifying Bacillus anthracis, Yersinia pestis, and Francisella tularensis in a single real-time PCR assay using species-specific primers and Taqman MGB probes. Also describes a kit for diagnosing bacterial bioterrorism agents; and an infection-free control plasmid to verify the result of the real-time PCR analysis method.

The Scan

US Booster Eligibility Decision

The US CDC director recommends that people at high risk of developing COVID-19 due to their jobs also be eligible for COVID-19 boosters, in addition to those 65 years old and older or with underlying medical conditions.

Arizona Bill Before Judge

The Arizona Daily Star reports that a judge weighing whether a new Arizona law restricting abortion due to genetic conditions is a ban or a restriction.

Additional Genes

Wales is rolling out new genetic testing service for cancer patients, according to BBC News.

Science Papers Examine State of Human Genomic Research, Single-Cell Protein Quantification

In Science this week: a number of editorials and policy reports discuss advances in human genomic research, and more.