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It was huge news earlier this year: the first patient in the world, an infant, was successfully treated with a CRISPR gene editing therapy personalized to his genetic mutation. “Baby KJ” was diagnosed with a rare and dangerous metabolic disease shortly after his birth. Within a ...
In our last post, we talked about the first base transversion editors: CGBEs, or C → G Base Editors. CGBEs first convert a cytosine (C) to uracil (U), just like Cytosine Base Editors (CBEs). But unlike CBEs, CGBEs then excise the U to create an abasic (empty) DNA site using ...
The first base editors revolutionized CRISPR gene editing. Cytosine base editors (CBEs) and adenine base editors (ABEs) chemically modify target bases without breaking the DNA backbone, making them efficient and precise tools for altering DNA sequences. These first base editors ...
Early CRISPR applications were often limited by the low editing efficiency of homology-directed repair (HDR), the pathway for resolving DNA double-strand breaks (DSBs) preferred by researchers. Compared to non-homologous end joining (NHEJ), HDR occurs at a relatively low ...
Base editors create specific point mutations in the genome, but they’re inefficient compared to CRISPR/Cas9 edits that rely on double strand DNA breaks. Due to this inefficiency it is crucial for scientists to not only easily identify base editing events in real-time but also ...
Adenine base editors (ABE) mediate A•T-to-G•C base changes (Figure 1), but it can be challenging to make these base changes, especially in primary human cells. Now, scientists at Beam Therapeutics have found a way to improve editing in primary human cells (Gaudelli et al., ...
David Liu’s lab created the first base editor in 2016 (Komor et al., 2016) and since then has been trying to expand their precision editing capabilities. Base editors make specific DNA base changes and consist of a catalytically impaired Cas protein (dCas or Cas nickase) fused ...
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