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Updated: Aug 5, 2026
09:39
Targeted Antibody Blocking by a Dual-Functional Conjugate of Antigenic Peptide and Fc-III Mimetics (DCAF)
Published on: September 17, 2019
A Bifunctional Artificial Antibody for Universal Antimicrobial Therapy
Hao Tang1, Xiaomeng Zhao1, Mengsi Sun2
1Guangdong Provincial Key Laboratory of Advanced Biomaterials, Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|July 29, 2026
Summary
Chemically engineered AuriFAB biomimetic antibodies offer a universal solution against multidrug-resistant ESKAPE pathogens. This stable, bifunctional therapy targets key bacterial components, overcoming limitations of traditional antibody treatments for antimicrobial resistance.
Area of Science:
- Biomaterials Science
- Chemical Biology
- Infectious Diseases
Background:
- Antimicrobial resistance (AMR) is a critical global health challenge.
- Multidrug-resistant ESKAPE pathogens are a major threat to public health.
- Existing antibody therapies face limitations in stability and functional diversity.
Purpose of the Study:
- To develop a universal antimicrobial therapy against multidrug-resistant ESKAPE pathogens.
- To engineer a chemically stable and functionally diverse antibody biomimetic.
- To address the limitations of traditional biological antibacterial antibodies.
Main Methods:
- Chemical engineering of a gold-based bifunctional antibody biomimetic (AuriFAB).
- Utilized dithiocarbamate ligation for enhanced stability.
- Employed chemical epitope screening for bispecific targeting (FtsZ and lipopolysaccharide).
Main Results:
- AuriFAB demonstrated exceptional colloidal and long-term storage stability (>1 year).
- Engineered AuriFAB achieved picomolar binding affinity and nanogram-per-milliliter antibacterial efficacy.
- AuriFAB showed low toxicity, high selectivity, favorable pharmacokinetics, and metabolizable clearance.
Conclusions:
- AuriFAB provides a universal solution against multidrug-resistant ESKAPE pathogens.
- This chemical strategy overcomes the stability and functionality limitations of biological antibodies.
- Chemistry-driven biologic mimics hold significant therapeutic potential for combating AMR.
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01:36Humoral Immune Responses
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Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
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