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Replace Western Blot Stripping and Reprobing with Automated RePlex Assays on Jess and Abby

ReThink, ReUse, RePlex!

With the new RePlex feature on Jess and Abby, you can run two immunoassays within the same capillary to get all your rich protein characterization data from just one sample!

Watch the video to see RePlex in action on Jess.

Run Two Immunoassays in the Same Capillary with RePlex


Reproducible Results Between Probing Cycles


RePlex enables two-step immunoassays that rely on the removal of antibodies from the first round of probing (Probe 1) prior to a second round of probing with fresh antibodies (Probe 2). Signal intensity and reproducibility are not
compromised between Probe 1 and Probe 2.

Lane view in Compass for Simple Western™ shows similar band intensities and quantitation shows comparable peak areas for AKT1 and AKT2 in each probing cycle of a RePlex.

Similar band intensities and quantitation in each immunoprobe cycle of RePlex

You Choose the Probing Order


Regardless of the order in which each protein was probed, AKT1 and AKT2 in MCF7 lysates detected in Probe 1 or Probe 2 in a RePlex assay show excellent reproducibility and similar signal intensity across both probing cycles of a RePlex. Protein integrity and re-probing are not compromised by antibody removal in RePlex assays.

Reproducibility after re-probing with replex

Antibodies are Efficiently Removed Between Probing Cycles

Because the samples are covalently bound to the capillary wall, RePlex completely and reproducibly removes antibodies between cycles without loss of signal intensity.


Lane view in Compass for Simple Western shows immunoassay signal for Probe 1 and no residual signal for Probe 2 for multiple targets in Jurkat and MCF7 cell lines. 

RePlex Western Blot Stripping and Reprobing

Immunoassay and Total Protein Detection in the Same Capillary


Automated Total Protein Normalization


The second cycle of RePlex can be dedicated to total protein detection so that you can normalize your data with confidence. All the steps of RePlex are automatically performed with Jess and Abby, providing more data, and lowering the cost of reagents and consumables per result.


The figure shows AKT phosphorylation in MCF7 lysates untreated and activated with h-IGF1. (A-B) Phospho-AKT and pan AKT were detected in Probe 1 using chemiluminescence and NIR fluorescence, respectively, while total protein signal was detected in Probe 2. (C) The Peak Table in Compass for Simple Western shows automated normalization of phosphorylated and pan AKT signal to total protein signal, demonstrating quantitation of target protein expression.

Immunoassay and total protein detection performed in a single capillary using RePlex with Jess