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Multivalent Nanosheet Antibody Mimics for Selective Microbial Recognition and Inactivation
Author(s) -
Kang Tae Woog,
Hwang InJun,
Lee Sin,
Jeon SuJi,
Choi Chanhee,
Han Juhee,
So Yoonhee,
Son Wooic,
Kim Hyunsung,
Yang ChulSu,
Park JaeHyoung,
Lee Hwankyu,
Kim JongHo
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202101376
Subject(s) - molecular recognition , antibody , tripeptide , bacteria , materials science , combinatorial chemistry , biophysics , nanotechnology , chemistry , biochemistry , peptide , biology , molecule , immunology , genetics , organic chemistry
Antibodies are widely used as recognition elements in sensing and therapy, but they suffer from poor stability, long discovery time, and high cost. Herein, a facile approach to create antibody mimics with flexible recognition phases and luminescent rigid scaffolds for the selective recognition, detection, and inactivation of pathogenic bacteria is reported. Tripeptides with a nitriloacetate‐Cu group are spontaneously assembled on transition metal dichalcogenide (TMD) nanosheets via coordination bonding, providing a diversity of TMD‐tripeptide assembly (TPA) antibody mimics. TMD‐TPA antibody mimics can selectively recognize various pathogenic bacteria with nanomolar affinities. The bacterial binding sites for TMD‐TPA are identified by experiments and molecular dynamics simulations, revealing that the dynamic and multivalent interactions of artificial antibodies play a crucial role for their recognition selectivity and affinity. The artificial antibodies allow the rapid and selective detection of pathogenic bacteria at single copy in human serum and urine, and their effective inactivation for therapy of infected mice. This work demonstrates the potential of TMD‐TPA antibody mimics as an alternative to natural antibodies for sensing and therapy.