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Molecular basis for methylation-sensitive editing by Cas9

Cloning, protein expression and purification The DNA encoding ThermoCas9 with a C-terminal His6 tag was integrated into the pML-1B vector and expressed in the Escherichia coli NiCo21(DE3) strain. Cells were grown in Luria–Bertani (LB) medium with 0.2% d-(+)-glucose at 37 °C until optical density at 600 nm reached 0.8, at which point addition, isopropyl-β-d-thiogalactopyranoside was added to 0.5 mM…

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Bad teacher bots can leave hidden marks on model students • The Register

New research warns about the dangers of teaching LLMs on the output of other models, showing that undesirable traits can be transmitted “subliminally” from teacher to student, even when they are scrubbed from training data. The peer-reviewed study from researchers at Anthropic demonstrated that LLMs can transfer negative traits to “student” models, even when evidence…

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