Over the past two years I've spoken with dozens of antibody drug developers at different pharmaceutical and biotechnology companies, and the number one request is for discovery tools for "multicell assays" to screen antibodies that bind antigens present in cell membranes. I'm excited to share the first results showing an elegant workflow to conduct these multicell assays in #nanovials, to screen tens to hundreds of thousands of plasma cells (cell 1) for antibodies that bind antigens on target cells (cell 2) - like PD-1 on immune cells. This is all done with standard fluorescence-activated cell sorters, with the highest intensity events corresponding to the best cell binders. This type of assay is very challenging since other direct B cell screening approaches, like antigen baiting, or repertoire sequencing, do not characterize binding of antibodies to cell membranes. Often teams are relegated to hybridoma workflows, where clones are grown up for weeks and hundreds of wells are screened one at a time for cell binders. Alternatively, if recombinant antigen is available, memory B cell screening can yield binders that all have to be sequenced, re-expressed, and tested one by one for subsequent cell binding. Less accessible microfluidic tools can also be used for direct screening of antibody-secreting cells, but are limited in throughput. Many thanks to Dilip Challa and Jennifer Watkins-Yoon for initially leading the studies in the pre-print and to PJ Krohl, Cassady Konu, and Kent Bondensgaard for their continued support and efforts to develop multicell assays with the Partillion Bioscience team, including Joe de Rutte, Shreya Udani, Jesse Liang, and Ronald Rondon. Please feel free to reach out to Partillion Bioscience if you are interested in trying out this new workflow for your own discovery campaigns. I think this is just the start of many other possible multicell workflows using Nanovials: including cell signaling reporter assays, viral neutralization assays, T cells interacting with antigen-presenting cells to evaluating the function of multispecific antibodies. Stay tuned! #biotechnology #antibodydiscovery #mabs #antibodies #plasmacells #bioengineering #drugdiscovery #flowcytometry #cytometry #singlecell #labonaparticle https://lnkd.in/giDhk2MS
This has been quite an exciting project. Glad it is out for the world to see! I think what's most exciting is that there is some much more room to expand these workflows and assays, this is just the beginning :)
Amazing achievement! Congrats to everyone involved.
Vandon Duong
Impressive work!
All Things Innovation
6 个月amazing work to all involved in this holy grail of techniques in antibody discovery