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2017 ; 8
(1
): 637
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An engineered bispecific DNA-encoded IgG antibody protects against Pseudomonas
aeruginosa in a pneumonia challenge model
#MMPMID28935938
Patel A
; DiGiandomenico A
; Keller AE
; Smith TRF
; Park DH
; Ramos S
; Schultheis K
; Elliott STC
; Mendoza J
; Broderick KE
; Wise MC
; Yan J
; Jiang J
; Flingai S
; Khan AS
; Muthumani K
; Humeau L
; Cheng LI
; Wachter-Rosati L
; Stover CK
; Sardesai NY
; Weiner DB
Nat Commun
2017[Sep]; 8
(1
): 637
PMID28935938
show ga
The impact of broad-spectrum antibiotics on antimicrobial resistance and
disruption of the beneficial microbiome compels the urgent investigation of
bacteria-specific approaches such as antibody-based strategies. Among these,
DNA-delivered monoclonal antibodies (DMAbs), produced by muscle cells in vivo,
potentially allow the prevention or treatment of bacterial infections
circumventing some of the hurdles of protein IgG delivery. Here, we optimize
DNA-delivered monoclonal antibodies consisting of two potent human IgG clones,
including a non-natural bispecific IgG1 candidate, targeting Pseudomonas
aeruginosa. The DNA-delivered monoclonal antibodies exhibit indistinguishable
potency compared to bioprocessed IgG and protect against lethal pneumonia in
mice. The DNA-delivered monoclonal antibodies decrease bacterial colonization of
organs and exhibit enhanced adjunctive activity in combination with antibiotics.
These studies support DNA-delivered monoclonal antibodies delivery as a potential
strategy to augment the host immune response to prevent serious bacterial
infections, and represent a significant advancement toward broader practical
delivery of monoclonal antibody immunotherapeutics for additional infectious
pathogens.DNA-delivered monoclonal antibodies (DMAbs) can be produced by muscle
cells in vivo, potentially allowing prevention or treatment of infectious
diseases. Here, the authors show that two DMAbs targeting Pseudomonas aeruginosa
proteins confer protection against lethal pneumonia in mice.
|*Protein Engineering
[MESH]
|*Pseudomonas aeruginosa/immunology
[MESH]
|Animals
[MESH]
|Antibodies, Bacterial/administration & dosage/*therapeutic use
[MESH]
|Antibodies, Bispecific/administration & dosage/*therapeutic use
[MESH]
|Antibodies, Monoclonal/administration & dosage/therapeutic use
[MESH]
|HEK293 Cells
[MESH]
|Humans
[MESH]
|Immunoglobulin G/administration & dosage/immunology/*therapeutic use
[MESH]