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McCrudden CM, Bennie L, Chambers P, Wilson J, Kerr M, Ziminska M, Douglas H, Kuhn S, Carroll E, O'Brien G, Buckley N, Dunne NJ, McCarthy HO. Peptide delivery of a multivalent mRNA SARS-CoV-2 vaccine. J Control Release 2023; 362:536-547. [PMID: 37648082 DOI: 10.1016/j.jconrel.2023.08.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/06/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
Lipid nanoparticles (LNP) have been instrumental in the success of mRNA vaccines and have opened up the field to a new wave of therapeutics. However, what is ahead beyond the LNP? The approach herein used a nanoparticle containing a blend of Spike, Membrane and Envelope antigens complexed for the first time with the RALA peptide (RALA-SME). The physicochemical characteristics and functionality of RALA-SME were assessed. With >99% encapsulation, RALA-SME was administered via intradermal injection in vivo, and all three antigen-specific IgG antibodies were highly significant. The IgG2a:IgG1 ratio were all >1.2, indicating a robust TH1 response, and this was further confirmed with the T-Cell response in mice. A complete safety panel of markers from mice were all within normal range, supported by safety data in hamsters. Vaccination of Syrian Golden hamsters with RALA-SME derivatives produced functional antibodies capable of neutralising SARS-CoV-2 from both Wuhan-Hu-1 and Omicron BA.1 lineages after two doses. Antibody levels increased over the study period and provided protection from disease-specific weight loss, with inhibition of viral migration down the respiratory tract. This peptide technology enables the flexibility to interchange and add antigens as required, which is essential for the next generation of adaptable mRNA vaccines.
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Affiliation(s)
- Cian M McCrudden
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Lindsey Bennie
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Philip Chambers
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Jordan Wilson
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Megan Kerr
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Monika Ziminska
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Hayley Douglas
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Sarah Kuhn
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Emma Carroll
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Garrett O'Brien
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK
| | - Niamh Buckley
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Nicholas J Dunne
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK; School of Chemical Sciences, Dublin City University, Collins Avenue, Dublin 9, Ireland; School of Mechanical & Manufacturing Engineering, Dublin City University, Collins Avenue, Dublin 9, Ireland; Advanced Manufacturing Research Centre (I-Form), School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland; Biodesign Europe, Dublin City University, Dublin 9, Ireland
| | - Helen O McCarthy
- School of Pharmacy, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; pHion Therapeutics, Catalyst Concourse Building 2, 20 Queens Road, Belfast BT3 9DT, UK; School of Chemical Sciences, Dublin City University, Collins Avenue, Dublin 9, Ireland; Biodesign Europe, Dublin City University, Dublin 9, Ireland.
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Jekl V, Agudelo CF, Hauptman K. Cardiology in Rodents, Rabbits, and Small Exotic Mammals-Diagnostic Workup. Vet Clin North Am Exot Anim Pract 2022; 25:503-524. [PMID: 35422264 DOI: 10.1016/j.cvex.2022.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The incidence of cardiac diseases in pet rabbits and rodents increased over the past decade as these species live longer and diagnostics methods are more precise to diagnose heart diseases even in small-sized animals. The article summarizes diagnostics of cardiac diseases in selected exotic companion mammals, particularly in rabbits, guinea pigs, chinchillas, and rats. The emphasis of the paper is given on clinical examination, thoracic radiography, electrocardiography, and echocardiography.
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Affiliation(s)
- Vladimir Jekl
- Jekl and Hauptman Veterinary Clinic - Focused on Exotic Companion Mammal Care, Mojmirovo Namesti 3105/6a, Brno 61200, Czech Republic; Department of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, VETUNI Brno, Palackeho Tr. 1946/1, Brno 61242, Czech Republic.
| | - Carlos F Agudelo
- Dogs and Cat Clinic, Faculty of Veterinary Medicine, VETUNI Brno, Palackeho Tr. 1946/1, Brno 61242, Czech Republic
| | - Karel Hauptman
- Jekl and Hauptman Veterinary Clinic - Focused on Exotic Companion Mammal Care, Mojmirovo Namesti 3105/6a, Brno 61200, Czech Republic
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Wu Y, Zheng Z, Cao X, Yang Q, Norton V, Adini A, Maiti AK, Adini I, Wu H. RIP1/RIP3/MLKL Mediates Myocardial Function Through Necroptosis in Experimental Autoimmune Myocarditis. Front Cardiovasc Med 2021; 8:696362. [PMID: 34497836 PMCID: PMC8419468 DOI: 10.3389/fcvm.2021.696362] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/22/2021] [Indexed: 12/23/2022] Open
Abstract
Cardiomyopathy often leads to dilated cardiomyopathy (DCM) when caused by viral myocarditis. Apoptosis is long considered as the principal process of cell death in cardiomyocytes, but programmed necrosis or necroptosis is recently believed to play an important role in cardiomyocyte cell death. We investigated the role of necroptosis and its interdependency with other processes of cell death, autophagy, and apoptosis in a rat system of experimental autoimmune myocarditis (EAM). We successfully created a rat model system of EAM by injecting porcine cardiac myosin (PCM) and showed that in EAM, all three forms of cell death increase considerably, resulting in the deterioration of cardiac conditions with an increase in inflammatory infiltration in cardiomyocytes. To explore whether necroptosis occurs in EAM rats independent of autophagy, we treated EAM rats with a RIP1/RIP3/MLKL kinase-mediated necroptosis inhibitor, Necrostatin-1 (Nec-1). In Nec-1 treated rats, cell death proceeds through apoptosis but has no significant effect on autophagy. In contrast, autophagy inhibitor 3-Methyl Adenine (3-MA) increases necroptosis, implying that blockage of autophagy must be compensated through necroptosis. Caspase 8 inhibitor zVAD-fmk blocks apoptosis but increases both necroptosis and autophagy. However, all necroptosis, apoptosis, and autophagy inhibitors independently reduce inflammatory infiltration in cardiomyocytes and improve cardiac conditions. Since apoptosis or autophagy is involved in many important cellular aspects, instead of suppressing these two major cell death processes, Nec1 can be developed as a potential therapeutic target for inflammatory myocarditis.
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Affiliation(s)
- Yujing Wu
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Department of Cardiology, Jiangxi Hypertension Research Institute, Nanchang, China.,Department of Emergency, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhenzhong Zheng
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Department of Cardiology, Jiangxi Hypertension Research Institute, Nanchang, China
| | - Xiantong Cao
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Yang
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Department of Cardiology, Jiangxi Hypertension Research Institute, Nanchang, China
| | - Vikram Norton
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, United States
| | - Avner Adini
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, United States
| | - Amit K Maiti
- Mydnavar, Department of Genetics and Genomics, Troy, MI, United States
| | - Irit Adini
- Center for Engineering in Medicine, Harvard Medical School, Massachusetts General Hospital, Boston, MA, United States
| | - Hao Wu
- Vascular Biology Program, Department of Surgery, Harvard Medical School, Boston Children's Hospital, Boston, MA, United States
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Pach NM, Luchins KR, Kim GH, Langan GP, Theriault BR. Unexpected Cardiomyopathy and Cardiac Dysfunction after Administration of Sulfadiazine-trimethoprim Medicated Diet to ICR mice ( Mus musculus). Comp Med 2020; 70:384-389. [PMID: 32718385 PMCID: PMC7446639 DOI: 10.30802/aalas-cm-19-000103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
For many years, the University of Chicago administered sulfamethoxazole-trimethoprim sulfate (SMZ-TMP) oral suspension to select immunocompromised mouse colonies via the drinking water. In 2014, SMZ-TMP oral suspension was placed on back-order and medicated diet with a different sulfonamide, sulfadiazine-trimethoprim (SDZ-TMP) was used as a replacement. Months after this transition, sentinel mice from the same room as one of the remaining immunocompromised colonies on this diet were found dead or appeared sick. Necropsies revealed cardiomegaly, and histology confirmed myocardial fibrosis in the first 4 sentinel mice examined, consistent with cardiomyopathy. Subsequent sequential monitoring of 2 sentinel mice via echocardiography showed their progression toward decreased cardiac function. Investigation of the housing room revealed that the sentinel mice had been accidently placed on SDZ-TMP diet upon entering the colony housing room. This case report describes cardiomyopathy in 6 ICR mice after long term consumption of SDZ-TMP medicated feed.
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Affiliation(s)
- Nicole M Pach
- Animal Resources Center, The University of Chicago, Chicago, Illinois; Department of Surgery, The University of Chicago, Chicago, Illinois;,
| | - Kerith R Luchins
- Animal Resources Center, The University of Chicago, Chicago, Illinois; Department of Surgery, The University of Chicago, Chicago, Illinois
| | - Gene H Kim
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - George P Langan
- Animal Resources Center, The University of Chicago, Chicago, Illinois; Department of Surgery, The University of Chicago, Chicago, Illinois
| | - Betty R Theriault
- Animal Resources Center, The University of Chicago, Chicago, Illinois; Department of Surgery, The University of Chicago, Chicago, Illinois
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