MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics]
Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A.
The American Society for Microbiology (ASM)
Published 2018
The American Society for Microbiology (ASM)
Published 2018
| Publication Date: |
2018-04-27
|
|---|---|
| Publisher: |
The American Society for Microbiology (ASM)
|
| Print ISSN: |
0066-4804
|
| Electronic ISSN: |
1098-6596
|
| Topics: |
Biology
Medicine
|
| Published by: |
| _version_ | 1836398909451141120 |
|---|---|
| autor | Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. |
| beschreibung | Pseudomonas aeruginosa is among the most formidable antibiotic-resistant pathogens and is a leading cause of hospital-associated infections. With dwindling options for antibiotic-resistant infections, a new paradigm for treatment and disease resolution is required. MEDI3902, a bispecific antibody targeting the P. aeruginosa type III secretion (T3S) protein PcrV and Psl exopolysaccharide, was previously shown to mediate potent protective activity in murine infection models. With the current challenges associated with the clinical development of narrow-spectrum agents, robust preclinical efficacy data in multiple animal species are desirable. Here, we sought to develop a rabbit P. aeruginosa acute pneumonia model to further evaluate the activity of MEDI3902 intervention. In the rabbit model of acute pneumonia, prophylaxis with MEDI3902 exhibited potent dose-dependent protection, whereas those receiving control IgG developed fatal hemorrhagic necrotizing pneumonia between 12 and 54 h after infection. Blood biomarkers (e.g., partial pressure of oxygen [pO 2 ], partial pressure of carbon dioxide [pCO 2 ], base excess, lactate, and creatinine) were grossly deranged for the vast majority of control IgG-treated animals but remained within normal limits for MEDI3902-treated animals. In addition, MEDI3902-treated animals exhibited a profound reduction in P. aeruginosa organ burden and a marked reduction in the expression of proinflammatory mediators from lung tissue, which correlated with reduced lung histopathology. These results confirm that targeting PcrV and Psl via MEDI3902 is a promising candidate for immunotherapy against P. aeruginosa pneumonia. |
| citation_standardnr | 6245115 |
| datenlieferant | ipn_articles |
| feed_id | 515 |
| feed_publisher | The American Society for Microbiology (ASM) |
| feed_publisher_url | http://www.asm.org/ |
| insertion_date | 2018-04-27 |
| journaleissn | 1098-6596 |
| journalissn | 0066-4804 |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | The American Society for Microbiology (ASM) |
| quelle | Antimicrobial Agents and Chemotherapy |
| relation | http://aac.asm.org/cgi/content/short/62/5/e02565-17?rss=1 |
| search_space | articles |
| shingle_author_1 | Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. |
| shingle_author_2 | Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. |
| shingle_author_3 | Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. |
| shingle_author_4 | Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. |
| shingle_catch_all_1 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] Pseudomonas aeruginosa is among the most formidable antibiotic-resistant pathogens and is a leading cause of hospital-associated infections. With dwindling options for antibiotic-resistant infections, a new paradigm for treatment and disease resolution is required. MEDI3902, a bispecific antibody targeting the P. aeruginosa type III secretion (T3S) protein PcrV and Psl exopolysaccharide, was previously shown to mediate potent protective activity in murine infection models. With the current challenges associated with the clinical development of narrow-spectrum agents, robust preclinical efficacy data in multiple animal species are desirable. Here, we sought to develop a rabbit P. aeruginosa acute pneumonia model to further evaluate the activity of MEDI3902 intervention. In the rabbit model of acute pneumonia, prophylaxis with MEDI3902 exhibited potent dose-dependent protection, whereas those receiving control IgG developed fatal hemorrhagic necrotizing pneumonia between 12 and 54 h after infection. Blood biomarkers (e.g., partial pressure of oxygen [pO 2 ], partial pressure of carbon dioxide [pCO 2 ], base excess, lactate, and creatinine) were grossly deranged for the vast majority of control IgG-treated animals but remained within normal limits for MEDI3902-treated animals. In addition, MEDI3902-treated animals exhibited a profound reduction in P. aeruginosa organ burden and a marked reduction in the expression of proinflammatory mediators from lung tissue, which correlated with reduced lung histopathology. These results confirm that targeting PcrV and Psl via MEDI3902 is a promising candidate for immunotherapy against P. aeruginosa pneumonia. Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. The American Society for Microbiology (ASM) 0066-4804 00664804 1098-6596 10986596 |
| shingle_catch_all_2 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] Pseudomonas aeruginosa is among the most formidable antibiotic-resistant pathogens and is a leading cause of hospital-associated infections. With dwindling options for antibiotic-resistant infections, a new paradigm for treatment and disease resolution is required. MEDI3902, a bispecific antibody targeting the P. aeruginosa type III secretion (T3S) protein PcrV and Psl exopolysaccharide, was previously shown to mediate potent protective activity in murine infection models. With the current challenges associated with the clinical development of narrow-spectrum agents, robust preclinical efficacy data in multiple animal species are desirable. Here, we sought to develop a rabbit P. aeruginosa acute pneumonia model to further evaluate the activity of MEDI3902 intervention. In the rabbit model of acute pneumonia, prophylaxis with MEDI3902 exhibited potent dose-dependent protection, whereas those receiving control IgG developed fatal hemorrhagic necrotizing pneumonia between 12 and 54 h after infection. Blood biomarkers (e.g., partial pressure of oxygen [pO 2 ], partial pressure of carbon dioxide [pCO 2 ], base excess, lactate, and creatinine) were grossly deranged for the vast majority of control IgG-treated animals but remained within normal limits for MEDI3902-treated animals. In addition, MEDI3902-treated animals exhibited a profound reduction in P. aeruginosa organ burden and a marked reduction in the expression of proinflammatory mediators from lung tissue, which correlated with reduced lung histopathology. These results confirm that targeting PcrV and Psl via MEDI3902 is a promising candidate for immunotherapy against P. aeruginosa pneumonia. Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. The American Society for Microbiology (ASM) 0066-4804 00664804 1098-6596 10986596 |
| shingle_catch_all_3 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] Pseudomonas aeruginosa is among the most formidable antibiotic-resistant pathogens and is a leading cause of hospital-associated infections. With dwindling options for antibiotic-resistant infections, a new paradigm for treatment and disease resolution is required. MEDI3902, a bispecific antibody targeting the P. aeruginosa type III secretion (T3S) protein PcrV and Psl exopolysaccharide, was previously shown to mediate potent protective activity in murine infection models. With the current challenges associated with the clinical development of narrow-spectrum agents, robust preclinical efficacy data in multiple animal species are desirable. Here, we sought to develop a rabbit P. aeruginosa acute pneumonia model to further evaluate the activity of MEDI3902 intervention. In the rabbit model of acute pneumonia, prophylaxis with MEDI3902 exhibited potent dose-dependent protection, whereas those receiving control IgG developed fatal hemorrhagic necrotizing pneumonia between 12 and 54 h after infection. Blood biomarkers (e.g., partial pressure of oxygen [pO 2 ], partial pressure of carbon dioxide [pCO 2 ], base excess, lactate, and creatinine) were grossly deranged for the vast majority of control IgG-treated animals but remained within normal limits for MEDI3902-treated animals. In addition, MEDI3902-treated animals exhibited a profound reduction in P. aeruginosa organ burden and a marked reduction in the expression of proinflammatory mediators from lung tissue, which correlated with reduced lung histopathology. These results confirm that targeting PcrV and Psl via MEDI3902 is a promising candidate for immunotherapy against P. aeruginosa pneumonia. Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. The American Society for Microbiology (ASM) 0066-4804 00664804 1098-6596 10986596 |
| shingle_catch_all_4 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] Pseudomonas aeruginosa is among the most formidable antibiotic-resistant pathogens and is a leading cause of hospital-associated infections. With dwindling options for antibiotic-resistant infections, a new paradigm for treatment and disease resolution is required. MEDI3902, a bispecific antibody targeting the P. aeruginosa type III secretion (T3S) protein PcrV and Psl exopolysaccharide, was previously shown to mediate potent protective activity in murine infection models. With the current challenges associated with the clinical development of narrow-spectrum agents, robust preclinical efficacy data in multiple animal species are desirable. Here, we sought to develop a rabbit P. aeruginosa acute pneumonia model to further evaluate the activity of MEDI3902 intervention. In the rabbit model of acute pneumonia, prophylaxis with MEDI3902 exhibited potent dose-dependent protection, whereas those receiving control IgG developed fatal hemorrhagic necrotizing pneumonia between 12 and 54 h after infection. Blood biomarkers (e.g., partial pressure of oxygen [pO 2 ], partial pressure of carbon dioxide [pCO 2 ], base excess, lactate, and creatinine) were grossly deranged for the vast majority of control IgG-treated animals but remained within normal limits for MEDI3902-treated animals. In addition, MEDI3902-treated animals exhibited a profound reduction in P. aeruginosa organ burden and a marked reduction in the expression of proinflammatory mediators from lung tissue, which correlated with reduced lung histopathology. These results confirm that targeting PcrV and Psl via MEDI3902 is a promising candidate for immunotherapy against P. aeruginosa pneumonia. Le, H. N., Quetz, J. S., Tran, V. G., Le, V. T. M., Aguiar-Alves, F., Pinheiro, M. G., Cheng, L., Yu, L., Sellman, B. R., Stover, C. K., Di; Giandomenico, A., Diep, B. A. The American Society for Microbiology (ASM) 0066-4804 00664804 1098-6596 10986596 |
| shingle_title_1 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| shingle_title_2 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| shingle_title_3 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| shingle_title_4 | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| timestamp | 2025-06-30T23:34:34.597Z |
| titel | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| titel_suche | MEDI3902 Correlates of Protection against Severe Pseudomonas aeruginosa Pneumonia in a Rabbit Acute Pneumonia Model [Clinical Therapeutics] |
| topic | W WW-YZ |
| uid | ipn_articles_6245115 |