I am struggling with a serious problem: after siRNA transfection MCF-7 cells die.
Since I want to treat the cells with estrogen later on, I usually grow them for 2-3 days in phenol-free medium containing 10% charcoal-stripped FCS. Then I transfect the cells with siRNA using lipofecatmine RNAiMax and leave the transfection mix on the cells. After 1 day cells do not look great.
however, after siRNA transfection with normal medium, normal FCS cells are OK, while after siRNA transfection in the steroid-free medium cells die. Has anybody an idea what can be improved? which E2 concentration do you usually use, how long do you treat the cells with E2 then?
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cells dying: MCF-7: siRNA transfection + estrogen treatment
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