Western blot of CHOP as a measure of ER stress

Food Science and Human Nutrition
Colorado State University
Graduate Student

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Company:

Cell Signaling Technology

Product Name:

CHOP mouse mAb

Catalog Number:

L63F7

We have tried this antibody multiple times in hopes it would work as a measure of ER stress chemical or physiological induction of ER stress using thapsigargin or the saturated fatty acid palmitate.

Experimental Design and Results Summary

Applications

Western Blot

Sample

Total cell lysates of H4IIE rat hepatoma cells.

Primary Incubation

1:500 in 1:3 OB:TBST (0.1% Tween) overnight at 4 degrees C.

Blocking Agent

1:3 Odyssey Block: TBS for 1 hour at room temperature

Secondary Incubation

1:15,000 goat anti mouse IRDye in 1:3 Odyssey Block: TBST (0.1% Tween 0.02% SDS)

Tertiary Incubation

NA

Detection

Odyssey Infrared Imager

Results Summary

Although this dilution happened to be 1:500, we have tested this antibody as high as 1:100 and have gotten little to no signal. Tossed it and won't be purchasing again.

Additional Notes

None

Related Categories

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Summary

The Good

Nothing!!!

The Bad

Everything. Can't detect the faintest band to indicate if the protein is even present.

The Bottom Line

Don't buy it. Try Abcam as they at least give you a refund if the antibody doesn't work.

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