Hybrid Macromolecular Constructs as a Platform for Spectral Nanoprobes for Advanced Cellular Barcoding in Flow Cytometry

Author:

Kudláčová Júlia1ORCID,Kužílková Daniela2ORCID,Bárta František3ORCID,Brdičková Naděžda2,Vávrová Adéla2,Kostka Libor1ORCID,Hovorka Ondřej3,Kalina Tomáš2,Etrych Tomáš1ORCID

Affiliation:

1. Department of Biomedical Polymers Institute of Macromolecular Chemistry CAS Heyrovského nám. 2 Prague 162 00 Czech Republic

2. CLIP (Childhood Leukemia Investigation Prague) Department of Paediatric Haematology and Oncology Second Faculty of Medicine Charles University and University Hospital Motol V Úvalu 84 Prague 150 06 Czech Republic

3. R&D division I.T.A.‐Intertact s.r.o Černokostelecká 143 Prague 108 00 Czech Republic

Abstract

AbstractHerein, an advanced bioconjugation technique to synthesize hybrid polymer‐antibody nanoprobes tailored for fluorescent cell barcoding in flow cytometry‐based immunophenotyping of leukocytes is applied. A novel approach of attachment combining two fluorescent dyes on the copolymer precursor and its conjugation to antibody is employed to synthesize barcoded nanoprobes of antibody polymer dyes allowing up to six nanoprobes to be resolved in two‐dimensional cytometry analysis. The major advantage of these nanoprobes is the construct design in which the selected antibody is labeled with an advanced copolymer bearing two types of fluorophores in different molar ratios. The cells after antibody recognition and binding to the target antigen have a characteristic double fluorescence signal for each nanoprobe providing a unique position on the dot plot, thus allowing antibody‐based barcoding of cellular samples in flow cytometry assays. This technique is valuable for cellular assays that require low intersample variability and is demonstrated by the live cell barcoding of clinical samples with B cell abnormalities. In total, the samples from six various donors were successfully barcoded using only two detection channels. This barcoding of clinical samples enables sample preparation and measurement in a single tube.

Funder

Ministerstvo Zdravotnictví Ceské Republiky

Ministerstvo Průmyslu a Obchodu

European Commission

Ministerstvo Školství, Mládeže a Tělovýchovy

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Biomaterials,Bioengineering,Biotechnology

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