A recent toast to James Watson highlights a tolerance for bigotry many want excised from the scientific community.
Two new techniques allow researchers to manipulate the activity of gut bacteria.
July 17, 2017|
© GEORGE RETSECK
Researchers modified an endogenous Bacteroides promoter sequence to be inducible—it can be turned on or off in mice by adding (right) or omitting (left) anhydrotetracycline (aTC) to the animal’s drinking water. The aTC binds to the TET repressor protein (yellow), thereby preventing its suppression of gene expression. As a proof of principle, the researchers integrated the modified promoter upstream of a sialidase gene in the bacterium’s genome, and showed they could control the enzyme’s activity in mouse intestines.
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