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P.O. Box 5205
West Chester, PA 19380
p: 610-431-7707
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PEG and Anti-PEG ELISA Kits

We manufacture ELISA kits for measurement of methoxy-PEG and non-methoxy-PEG (free and conjugated) as well as ELISA kits for detection of anti-PEG IgM and IgG in mouse, rat, monkey, and human serum or plasma.

PEG coated plates and blocking buffers are available for those interested in developing their own PEG assays. Researchers should be aware that many commercially available ELISA buffers contain Tween-20 or other polyoxyethylene detergents that significantly interfere with PEG assays. Our blocking buffer is devoid of polyoxyethylene detergents and can be used to block and stabilize plates coated with PEGylated proteins or PEG antibodies.

In December 2024, we began updating our ELISA kits for measurement of anti-PEG IgG and IgM. The kits remain the same, except that the HRP-conjugate is provided as a stable lyophilized stock that must be reconstituted and diluted prior to use. The new kits are identified with a “-N” suffix.

Orders may be placed by phone, fax, email, or via our online shop.

 

  ELISA Kit / Reagent

Instructions / Information sheet

Cat. #

Price

  PEG ELISA  – Competitive ELISA for detection of PEGylated proteins Insert PEG $575
  PEG ELISA  – Sandwich ELISA for detection of PEGylated proteins Insert PEG-N $600
  mPEG ELISA – Sandwich ELISA for detection of mPEGylated proteins Insert MPEG $600
  Mouse Anti-PEG IgG ELISA Insert  PEGG-1-N $650
  Mouse Anti-PEG IgM ELISA
Insert  PEGM-1-N $650
  Rat Anti-PEG IgG ELISA
Insert  PEGG-2-N $650
  Rat Anti-PEG IgM ELISA
Insert  PEGM-2-N $650
  Monkey Anti-PEG IgG ELISA
Insert PEGG-3-N $650
  Monkey Anti-PEG IgM ELISA
Insert PEGM-3-N $650
  Rabbit Anti-PEG IgG ELISA
Insert PEGG-10-N $650
  Rabbit Anti-PEG IgM ELISA
Insert PEGM-10-N $650
  Human Anti-PEG IgG ELISA
Insert PEGG-20-N $650
  Human Anti-PEG IgM ELISA
Insert PEGM-20-N $650
  PEG-BSA Coated plate – Coated with mono mPEG-BSA (20 kDa)
Info

Application Note

 PBSA20PL  $325
  PEG Blocker, 125 ml Info PEGB125-1  $125
  PEG Diluent, 50 ml – (Not for MPEG kit) Info PEGD50-1 $50
  PEG Wash, 50 ml (20x) – (Not for MPEG kit) Info PEGW50-20 $50

For technical advice please email us at [email protected].

The figures below illustrate the use of our mouse anti-PEG IgG and IgM ELISA kits. Mice were immunized with mPEG-KLH (n = 5 for each study). Serum samples collected on days 7 and 25  were used for evaluation of anti-PEG IgM and IgG respectively. Antibody levels were evaluated using microtiter plates coated with (i) methoxy-PEG-BSA (PBSA-01) and (ii) a comparable non-methoxy PEG-BSA, in which the terminal methoxy group was replaced by a pentanoic acid group (PBSA-01P). Comparison of reactivity on the two plates allowed assessment of antibodies directed against the terminal methoxy group as well as the PEG backbone. As can be seen, in the IgM study (upper figure), serum from all five mice gave  identical reactivities against methoxy and non-methoxy PEG-BSA, indicating that all mice produced IgM antibodies directed against the PEG backbone. In the IgG study (lower figure), four of the five mice gave identical reactivities against both PEG antigens, again indicating that all antibodies produced by those mice were directed against the PEG-backbone. However, one mouse (M888) had a 3-fold greater reactivity against methoxy-PEG BSA, indicating a predominant antibody response against the terminal methoxy group.

Please note that our anti-PEG ELISA kits (listed above) are provided with methoxy-PEG coated plates. non-methoxy PEG coated plates are available on request.

Mouse Anti-PEG IgG med

Mouse Anti-PEG IgM med

References

  1. Im H-J, et al. Accelerated blood clearance phenomenon reduces the passive targeting of PEGylated nanoparticles in peripheral arterial disease. Applied Materials and Interfaces. 8:17955-17963 (2016)

 

Copyright Life Diagnostics 2022

Use Statement: All products are for research use only.
Not intended for any diagnostic or therapeutic purpose.

If you are interested in our Veterinary Diagnostic products, please visit: Vetbiomarkers.com Dismiss