1
|
Thanki AM, Osei EK, Whenham N, Salter MG, Bedford MR, Masey O'Neill HV, Clokie MRJ. Broad host range phages target global Clostridium perfringens bacterial strains and clear infection in five-strain model systems. Microbiol Spectr 2024; 12:e0378423. [PMID: 38511948 DOI: 10.1128/spectrum.03784-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 03/06/2024] [Indexed: 03/22/2024] Open
Abstract
Clostridium perfringens is a prevalent bacterial pathogen in poultry, and due to the spread of antimicrobial resistance, alternative treatments are needed to prevent and treat infection. Bacteriophages (phages), viruses that kill bacteria, offer a viable option and can be used therapeutically to treat C. perfringens infections. The aim of this study was to isolate phages against C. perfringens strains currently circulating on farms across the world and establish their virulence and development potential using host range screening, virulence assays, and larva infection studies. We isolated 32 phages of which 19 lysed 80%-92% of our global C. perfringens poultry strain collection (n = 97). The virulence of these individual phages and 32 different phage combinations was quantified in liquid culture at multiple doses. We then developed a multi-strain C. perfringens larva infection model, to mimic an effective poultry model used by the industry. We tested the efficacy of 16/32 phage cocktails in the larva model. From this, we identified that our phage cocktail consisting of phages CPLM2, CPLM15, and CPLS41 was the most effective at reducing C. perfringens colonization in infected larvae when administered before bacterial challenge. These data suggest that phages do have significant potential to prevent and treat C. perfringens infection in poultry. IMPORTANCE Clostridium perfringens causes foodborne illness worldwide, and 95% of human infections are linked to the consumption of contaminated meat, including chicken products. In poultry, C. perfringens infection causes necrotic enteritis, and associated mortality rates can be up to 50%. However, treating infections is difficult as the bacterium is becoming antibiotic-resistant. Furthermore, the poultry industry is striving toward reduced antibiotic usage. Bacteriophages (phages) offer a promising alternative, and to progress this approach, robust suitable phages and laboratory models that mimic C. perfringens infections in poultry are required. In our study, we isolated phages targeting C. perfringens and found that many lyse C. perfringens strains isolated from chickens worldwide. Consistent with other published studies, in the model systems we assayed here, when some phages were combined as cocktails, the infection was cleared most effectively compared to individual phage use.
Collapse
Affiliation(s)
- Anisha M Thanki
- Department of Genetics and Genome Biology, Leicester Centre for Phage Research, University of Leicester, Leicester, United Kingdom
| | - Emmanuel K Osei
- Department of Agriculture, Food and the Marine, Teagasc Food Research Centre, Moorepark, Ireland
- APC Microbiome Ireland, University College, Cork, Ireland
| | - Natasha Whenham
- AB Agri, Innovation Way, Peterborough Business Park, Peterborough, United Kingdom
| | - Michael G Salter
- AB Agri, Innovation Way, Peterborough Business Park, Peterborough, United Kingdom
| | - Mike R Bedford
- AB Vista, Woodstock Court, Marlborough Business Park, Marlborough, Wiltshire, United Kingdom
| | | | - Martha R J Clokie
- Department of Genetics and Genome Biology, Leicester Centre for Phage Research, University of Leicester, Leicester, United Kingdom
| |
Collapse
|
4
|
van Marcke C, Honoré N, van der Elst A, Beyaert S, Derouane F, Dumont C, Aboubakar Nana F, Baurain JF, Borbath I, Collard P, Cornélis F, De Cuyper A, Duhoux FP, Filleul B, Galot R, Gizzi M, Mazzeo F, Pieters T, Seront E, Sinapi I, Van den Eynde M, Whenham N, Yombi JC, Scohy A, van Maanen A, Machiels JP. Safety of systemic anti-cancer treatment in oncology patients with non-severe COVID-19: a cohort study. BMC Cancer 2021; 21:578. [PMID: 34016086 PMCID: PMC8134961 DOI: 10.1186/s12885-021-08349-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 05/12/2021] [Indexed: 01/08/2023] Open
Abstract
Background The viral pandemic coronavirus disease 2019 (COVID-19) has disrupted cancer patient management around the world. Most reported data relate to incidence, risk factors, and outcome of severe COVID-19. The safety of systemic anti-cancer therapy in oncology patients with non-severe COVID-19 is an important matter in daily practice. Methods ONCOSARS-1 was a single-center, academic observational study. Adult patients with solid tumors treated in the oncology day unit with systemic anti-cancer therapy during the initial phase of the COVID-19 pandemic in Belgium were prospectively included. All patients (n = 363) underwent severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) serological testing after the first peak of the pandemic in Belgium. Additionally, 141 of these patients also had a SARS-CoV-2 RT-PCR test during the pandemic. The main objective was to retrospectively determine the safety of systemic cancer treatment, measured by the rate of adverse events according to the Common Terminology Criteria for Adverse Events, in SARS-CoV-2-positive patients compared with SARS-CoV-2-negative patients. Results Twenty-two (6%) of the 363 eligible patients were positive for SARS-CoV-2 by RT-PCR and/or serology. Of these, three required transient oxygen supplementation, but none required admission to the intensive care unit. Hematotoxicity was the only adverse event more frequently observed in SARS-CoV-2 -positive patients than in SARS-CoV-2-negative patients: 73% vs 35% (P < 0.001). This association remained significant (odds ratio (OR) 4.1, P = 0.009) even after adjusting for performance status and type of systemic treatment. Hematological adverse events led to more treatment delays for the SARS-CoV-2-positive group: 55% vs 20% (P < 0.001). Median duration of treatment interruption was similar between the two groups: 14 and 11 days, respectively. Febrile neutropenia, infections unrelated to COVID-19, and bleeding events occurred at a low rate in the SARS-CoV-2-positive patients. Conclusion Systemic anti-cancer therapy appeared safe in ambulatory oncology patients treated during the COVID-19 pandemic. There were, however, more treatment delays in the SARS-CoV-2-positive population, mainly due to a higher rate of hematological adverse events. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08349-8.
Collapse
Affiliation(s)
- C van Marcke
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - N Honoré
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - A van der Elst
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - S Beyaert
- Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - F Derouane
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - C Dumont
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - F Aboubakar Nana
- Department of Pneumology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle PNEU), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - J F Baurain
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - I Borbath
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Hepatogastroenterology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - P Collard
- Department of Pneumology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle PNEU), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - F Cornélis
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - A De Cuyper
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - F P Duhoux
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - B Filleul
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Medical Oncology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - R Galot
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - M Gizzi
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Medical Oncology, Grand Hôpital de Charleroi (GHdC), Charleroi, Belgium
| | - F Mazzeo
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - T Pieters
- Department of Pneumology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle PNEU), Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - E Seront
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Medical Oncology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - I Sinapi
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Medical Oncology, Grand Hôpital de Charleroi (GHdC), Charleroi, Belgium
| | - M Van den Eynde
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Hepatogastroenterology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - N Whenham
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of Medical Oncology, Clinique Saint-Pierre, Ottignies, Belgium
| | - J C Yombi
- Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium.,Department of General Internal Medicine, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - A Scohy
- Department of Microbiology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - A van Maanen
- Statistics unit, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - J P Machiels
- Department of Medical Oncology, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium. .,Institute for Experimental and Clinical Research (IREC, pôle MIRO), Université catholique de Louvain (UCLouvain), Avenue Hippocrate 10, 1200, Brussels, Belgium.
| |
Collapse
|
11
|
Seront E, Rottey S, Sautois B, Kerger J, D'Hondt LA, Verschaeve V, Canon JL, Dopchie C, Vandenbulcke JM, Whenham N, Goeminne JC, Clausse M, Verhoeven D, Glorieux P, Branders S, Dupont P, Schoonjans J, Feron O, Machiels JP. Phase II study of everolimus in patients with locally advanced or metastatic transitional cell carcinoma of the urothelial tract: clinical activity, molecular response, and biomarkers. Ann Oncol 2012; 23:2663-2670. [PMID: 22473592 DOI: 10.1093/annonc/mds057] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND This phase II study assessed the safety and efficacy of everolimus, an oral mammalian target of rapamycin inhibitor in advanced transitional carcinoma cell (TCC) after failure of platinum-based therapy. PATIENTS AND METHODS Thirty-seven patients with advanced TCC received everolimus 10 mg/day until progressive disease (PD) or unacceptable toxicity. The primary end point was the disease control rate (DCR), defined as either stable disease (SD), partial response (PR), or complete response at 8 weeks. Angiogenesis-related proteins were detected in plasma and changes during everolimus treatment were analyzed. PTEN expression and PIK3CA mutations were correlated to disease control. RESULTS Two confirmed PR and eight SD were observed, resulting in a DCR of 27% at 8 weeks. Everolimus was well tolerated. Compared with patients with noncontrolled disease, we observed in patients with controlled disease a significant higher baseline level of angiopoietin-1 and a significant early plasma decrease in angiopoietin-1, endoglin, and platelet-derived growth factor-AB. PTEN loss was observed only in patients with PD. CONCLUSIONS Everolimus showed clinical activity in advanced TCC. The profile of the plasma angiogenesis-related proteins suggested a role of the everolimus antiangiogenic properties in disease control. PTEN loss might be associated with everolimus resistance.
Collapse
Affiliation(s)
- E Seront
- Department of Medical Oncology, Centre du Cancer, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels; Angiogenesis and Cancer Research Laboratory, Pole of Pharmacology and Therapeutics, Université catholique de Louvain, Brussels
| | - S Rottey
- Department of Medical Oncology, University Hospital Gent, Gent
| | - B Sautois
- Department of Medical Oncology, Centre Hospitalier Universitaire Sart-Tilman, Liège
| | - J Kerger
- Department of Medical Oncology, Centre Hospitalier Universitaire Mont-Godinne, Namur
| | - L A D'Hondt
- Department of Medical Oncology, Centre Hospitalier Universitaire Mont-Godinne, Namur
| | - V Verschaeve
- Department of Medical Oncology, Grand Hôpital de Charleroi, Charleroi
| | - J-L Canon
- Department of Medical Oncology, Grand Hôpital de Charleroi, Charleroi
| | - C Dopchie
- Department of Medical Oncology, Réseau Hospitalier de Médecine Sociale, Tournai
| | - J M Vandenbulcke
- Department of Medical Oncology, Réseau Hospitalier de Médecine Sociale, Tournai
| | - N Whenham
- Department of Medical Oncology, Clinique Saint-Pierre Ottignies, Ottignies
| | - J C Goeminne
- Department of Medical Oncology, Centre de Maternité Saint Elisabeth, Namur
| | - M Clausse
- Department of Medical Oncology, Clinique Saint-Luc, Bouge
| | - D Verhoeven
- Department of Medical Oncology, AZ Klina, Braschaat
| | - P Glorieux
- Department of Medical Oncology, Clinique Saint Joseph, Arlon
| | - S Branders
- Machine Learning Group, Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain, Louvain-la-Neuve
| | - P Dupont
- Machine Learning Group, Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain, Louvain-la-Neuve
| | - J Schoonjans
- Department of radiology, Centre Hospitalier de Jolimont, Haine Saint Paul, Belgium
| | - O Feron
- Angiogenesis and Cancer Research Laboratory, Pole of Pharmacology and Therapeutics, Université catholique de Louvain, Brussels
| | - J-P Machiels
- Department of Medical Oncology, Centre du Cancer, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels.
| |
Collapse
|