PMID- 32872428 OWN - NLM STAT- MEDLINE DCOM- 20210223 LR - 20210223 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 21 IP - 17 DP - 2020 Aug 29 TI - Exhaustive Search of the Receptor Ligands by the CyCLOPS (Cytometry Cell-Labeling Operable Phage Screening) Technique. LID - 10.3390/ijms21176258 [doi] LID - 6258 AB - Effective and versatile screening of the peptide ligands capable of selectively binding to diverse receptors is in high demand for the state-of-the-art technologies in life sciences, including probing of specificity of the cell surface receptors and drug development. Complex microenvironment and structure of the surface receptors significantly reduce the possibility to determine their specificity, especially when in vitro conditions are utilized. Previously, we designed a publicly available platform for the ultra-high-throughput screening (uHTS) of the specificity of surface-exposed receptors of the living eukaryotic cells, which was done by consolidating the phage display and flow cytometry techniques. Here, we significantly improved this methodology and designed the fADL-1e-based phage vectors that do not require a helper hyperphage for the virion assembly. The enhanced screening procedure was tested on soluble human leukocyte antigen (HLA) class II molecules and transgenic antigen-specific B cells that express recombinant lymphoid B-cell receptor (BCR). Our data suggest that the improved vector system may be successfully used for the comprehensive search of the receptor ligands in either cell-based or surface-immobilized assays. FAU - Ishina, Irina A AU - Ishina IA AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. FAU - Filimonova, Ioanna N AU - Filimonova IN AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. FAU - Zakharova, Maria Y AU - Zakharova MY AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. AD - Pirogov Russian National Research Medical University, 117997 Moscow, Russia. FAU - Ovchinnikova, Leyla A AU - Ovchinnikova LA AUID- ORCID: 0000-0002-3086-0728 AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. FAU - Mamedov, Azad E AU - Mamedov AE AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. FAU - Lomakin, Yakov A AU - Lomakin YA AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. FAU - Belogurov, Alexey A Jr AU - Belogurov AA Jr AUID- ORCID: 0000-0002-2033-9621 AD - Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia. AD - Lomonosov Moscow State University, 119991 Moscow, Russia. LA - eng GR - 17-74-30019/Russian Science Foundation/ PT - Journal Article DEP - 20200829 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Ligands) RN - 0 (Receptors, Antigen, B-Cell) SB - IM MH - Bacteriophage M13/genetics MH - Cell Line MH - Cell Surface Display Techniques/*methods MH - Histocompatibility Antigens Class II/*analysis/genetics MH - Humans MH - Ligands MH - Receptors, Antigen, B-Cell/*analysis/genetics PMC - PMC7504098 OTO - NOTNLM OT - BCR OT - FACS OT - HLA-DRB1 OT - M13 bacteriophage OT - MHC II OT - antigen-specific B cell OT - fd bacteriophage OT - filamentous phage OT - immunoglobulin selection OT - ligand-receptor interaction COIS- The authors declare no conflict of interest. EDAT- 2020/09/03 06:00 MHDA- 2021/02/24 06:00 PMCR- 2020/09/01 CRDT- 2020/09/03 06:00 PHST- 2020/06/09 00:00 [received] PHST- 2020/08/25 00:00 [revised] PHST- 2020/08/27 00:00 [accepted] PHST- 2020/09/03 06:00 [entrez] PHST- 2020/09/03 06:00 [pubmed] PHST- 2021/02/24 06:00 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - ijms21176258 [pii] AID - ijms-21-06258 [pii] AID - 10.3390/ijms21176258 [doi] PST - epublish SO - Int J Mol Sci. 2020 Aug 29;21(17):6258. doi: 10.3390/ijms21176258.