ATC Abstracts

American Transplant Congress abstracts

  • Home
  • Meetings Archive
    • 2022 American Transplant Congress
    • 2021 American Transplant Congress
    • 2020 American Transplant Congress
    • 2019 American Transplant Congress
    • 2018 American Transplant Congress
    • 2017 American Transplant Congress
    • 2016 American Transplant Congress
    • 2015 American Transplant Congress
    • 2013 American Transplant Congress
  • Keyword Index
  • Resources
    • 2021 Resources
    • 2016 Resources
      • 2016 Welcome Letter
      • ATC 2016 Program Planning Committees
      • ASTS Council 2015-2016
      • AST Board of Directors 2015-2016
    • 2015 Resources
      • 2015 Welcome Letter
      • ATC 2015 Program Planning Committees
      • ASTS Council 2014-2015
      • AST Board of Directors 2014-2015
      • 2015 Conference Schedule
  • Search

Isolation of Preformed Antibodies from Whole Blood by Integrating Acoustics and Microfluidics in Sensitized Animal Model

J. Kwun1, Y. Gu2, M. Manook1, M. Wu1, J. Yoon1, S. Knechtle1, T. J. Huang2

1Surgery, Duke University, Durham, NC, 2Mechanical Engineering and Material Science, Duke University, Durham, NC

Meeting: 2020 American Transplant Congress

Abstract number: D-334

Keywords: Alloantibodies, Plasmapheresis

Session Information

Session Name: Poster Session D: B-cell / Antibody /Autoimmunity

Session Type: Poster Session

Date: Saturday, May 30, 2020

Session Time: 3:15pm-4:00pm

 Presentation Time: 3:30pm-4:00pm

Location: Virtual

*Purpose: Apheresis therapy refers to the separation, removal and/or exchange of unwanted blood components (red cells, white cells, platelets and/or plasma) by centrifugation and return of remaining constituents to the patient, is used for a variety of medical disorders, ranging from sickle cell diseases to treatment of rejection in organ transplantation. Current plasmapheresis instruments are designed to process adult blood volumes, and thus are not suitable for treating neonates or infants with smaller blood volumes. In addition, safety and therapeutic efficacy in pre-clinical animal models are unable to be evaluated.

*Methods: We have developed and evaluated a novel sound-based technology to perform antibody separation. The prototype acoustic apheresis (AF-apheresis) machine controls and separates blood components continuously and precisely using microfluidic technology. Fractionation occurs by acoustic radiation in a label-free and flow through manner. We measured donor-specific antibody before and after AF-apheresis using sensitized monkey blood in vitro as well as sensitized mouse in vivo.

*Results: AF-apheresis device is capable of efficient plasma separation (including antibody) using small extracorporeal volumes (100-200μl). The AF-apheresis system demonstrated successful transfer of blood cells and platelets to varied buffer fluids with ~95% recovery rate. Furthermore, the returned blood components were characterized to be functioning well after AF-apheresis. The device also allows us to separate exogenous anti-MAMU A001 antibody in A001 negative monkey blood or entire preformed Ab against previous donor. Finally, we confirmed the feasibility, efficacy and safety of this AF-apheresis device using sensitized mouse model which showed ~50% reduction of preformed antibody (Figure 1).

 border=

*Conclusions: This method, as the first apheresis apparatus for small animals, fulfils the demand for a variety of fundamental studies and therapeutic applications. It is a reliable method that opens up potential to investigate previously unfeasible hematology and circulation related research topics including transplantation.

  • Tweet
  • Email
  • Print

To cite this abstract in AMA style:

Kwun J, Gu Y, Manook M, Wu M, Yoon J, Knechtle S, Huang TJ. Isolation of Preformed Antibodies from Whole Blood by Integrating Acoustics and Microfluidics in Sensitized Animal Model [abstract]. Am J Transplant. 2020; 20 (suppl 3). https://atcmeetingabstracts.com/abstract/isolation-of-preformed-antibodies-from-whole-blood-by-integrating-acoustics-and-microfluidics-in-sensitized-animal-model/. Accessed May 10, 2025.

« Back to 2020 American Transplant Congress

Visit Our Partner Sites

American Transplant Congress (ATC)

Visit the official site for the American Transplant Congress »

American Journal of Transplantation

The official publication for the American Society of Transplantation (AST) and the American Society of Transplant Surgeons (ASTS) »

American Society of Transplantation (AST)

An organization of more than 3000 professionals dedicated to advancing the field of transplantation. »

American Society of Transplant Surgeons (ASTS)

The society represents approximately 1,800 professionals dedicated to excellence in transplantation surgery. »

Copyright © 2013-2025 by American Society of Transplantation and the American Society of Transplant Surgeons. All rights reserved.

Privacy Policy | Terms of Use | Cookie Preferences