Regeneration of immunosorbent surfaces used in clinical, industrial and environmental biosensors. Role of covalent and non-covalent interactions

  • Blanchard G
  • Taylor C
  • Busey B
 et al. 
  • 5

    Readers

    Mendeley users who have this article in their library.
  • 17

    Citations

    Citations of this article.

Abstract

The durability and regeneration of antibodies immobilized to commercial immnosorbents were investigated by monitoring Ag-Ab dissociation. Solution consisting of 0.01 M hydrochloric acid (HCI), 10% propionic acid, 50% ethylene glycol and 10% SDS in 6 M urea were used in the evaluation of antigen dissociation from antibody covalently immobilized to glass and polystytrene beads, microtiter plates and Immobilon filters. RAH-IgG, used as a model antibody, bound strongly to all covalent surfaces. However, on adsorption to Nunc-1 microtiter plates, 25-60% of RAH-IgG was removed by all dissociating solutions. Covalent binding to Sanger beads was weakest relative to other surfaces, exhibiting 30% and 65% detachment with ethylene glycol and SDS in urea, respectively. Although all four solutions dissociated antigen from surface-bound antibody, HCl and propionic acid were more effective on most surfaces. The antibody remained functional following antigen dissociation and reassociated to nearly 100% on all surfaces except Sanger beads and Nunc-1 microtiter plates. This study was initiated to evaluate regeneration and reuse of microelisa plates and emerging biosensors as a means of reducing routine laboratory analysis costs. Data are presented to demonstrate the reusability of microtiter plates in ELISAs following antigen dissociation from covalently bound antibody. © 1990.

Author-supplied keywords

  • Dissociation
  • ELISA
  • Immobilization
  • Model system
  • Regeneration

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • G. C. Blanchard

  • C. G. Taylor

  • B. R. Busey

  • M. L. Willamson

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free