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Ruminant cluster CD62L

C J Howard1

  • 1Institute for Animal Health, Compton Laboratory, Newbury, UK.

Veterinary Immunology and Immunopathology
|August 1, 1996
PubMed
Summary
This summary is machine-generated.

Four monoclonal antibodies (mAbs) targeting bovine L-selectin were clustered, with three (Buf44, IVA94, and IAH-CC32) binding to the same epitope. This research aids in understanding bovine immune cell interactions.

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Area of Science:

  • Immunology
  • Veterinary Science
  • Cell Biology

Background:

  • Monoclonal antibodies (mAbs) are crucial tools for identifying cell surface markers.
  • L-selectin (CD62L) is a key molecule involved in lymphocyte homing and immune responses.
  • Previous studies identified bovine L-selectin and characterized some related mAbs.

Purpose of the Study:

  • To cluster and characterize four monoclonal antibodies (mAbs) identified in the Third Workshop.
  • To determine if these mAbs bind to the same or different epitopes on bovine L-selectin.

Main Methods:

  • Utilized workshop control mAb IAH-CC32, previously identified as CD62L-specific.
  • Cross-reactivity of human L-selectin mAbs (LAM1.4, DREG-56) with bovine cells was assessed.
  • Inhibition assays were performed using Buf44 to block binding of other mAbs (IVA94, IAH-CC32).

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Main Results:

  • Four mAbs (IAH-CC32, BAQ92, Buf44, IVA94) were grouped together.
  • IAH-CC32 was confirmed as a CD62L-specific mAb.
  • Buf44 blocked the binding of IVA94 and IAH-CC32, indicating they recognize the same or closely related epitopes on bovine L-selectin.

Conclusions:

  • Three of the studied mAbs (Buf44, IVA94, IAH-CC32) target a common epitope on bovine L-selectin.
  • This clustering provides a refined understanding of bovine L-selectin epitopes.
  • The characterized mAbs can be used for further studies on bovine lymphocyte trafficking and immune function.