Friday, April 3, 2015

Weekly Links April 3 ,2015



“MUST READ”
    • With this trove of genetic information, the scientists were able to accurately infer the genomes of more than 100,000 other Icelanders, or almost a third of the entire country.
“From the technical point of view, these papers are a tour-de-force,” said David Reich, a geneticist at Harvard Medical School who was not involved in the research.
    • Discovering these mutations can shed light on these diseases and point to potential treatments. But many of them are rare, making it necessary to search large groups of people to find them.
The wealth of data created in Iceland may enable scientists to begin doing that.

TOOLS/TECHNIQUES
    • This is the second in a six part series to introduce you to digital PCR (dPCR). In this edition, we’ll take a look at how QuantStudio® 3D dPCR from Life Technologies offers simplicity, affordability, and most importantly, absolute quantification attainability.
  • Keeping On Top of Housekeeping Genes Bitesize Bio
    • Want to measure how much mRNA you have in a particular sample? Easy! Make some cDNA, add some fluorescent DNA-intercalating dye, pop it into a quantitative real-time PCR (qRT-PCR) machine and Bob’s your uncle! You have your result! Easy right…? Not so fast.
As with any scientific assay, qRT-PCR requires some optimization. First, you need to test your primers for specificity and efficiency and second, and most commonly overlooked, you need to optimize and select your housekeeping gene.
    • If you think all cloning techniques require restriction enzymes or ligases, think again. There are lots of ways you can clone without restriction enzymes or ligases for seamless cloning results. Read below to learn about Topoisomerase cloning, SLIC and Gibson.
HEALTH/MEDECINE
    • In February of 2015, the US Food and Drug Administration (FDA) released a nine-page paper entitled “Optimizing FDA’s Regulatory Oversight of Next Generation Sequencing Diagnostic Tests—Preliminary Discussion Paper” that, among other ideas, proposed allowing the use of curated third-party databases to support submissions for FDA approval, rather than requiring new studies and the support of existing literature.
COMPANIES
    • Cellular Dynamics International, an up-and-coming player in the stem cell field and one of Wisconsin’s more promising biotech companies, is being acquired by Fujifilm for $307 million in cash.


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