1
|
Beeton K, Mitra D, Akinleye AA, Howell JA, Yu CS, Bidwell GL, Tandon R. An Elastin-like Polypeptide-fusion peptide targeting capsid-tegument interface as an antiviral against cytomegalovirus infection. Sci Rep 2024; 14:10253. [PMID: 38704431 PMCID: PMC11069587 DOI: 10.1038/s41598-024-60691-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 04/26/2024] [Indexed: 05/06/2024] Open
Abstract
The tegument protein pp150 of Human Cytomegalovirus (HCMV) is known to be essential for the final stages of virus maturation and mediates its functions by interacting with capsid proteins. Our laboratory has previously identified the critical regions in pp150 important for pp150-capsid interactions and designed peptides similar in sequence to these regions, with a goal to competitively inhibit capsid maturation. Treatment with a specific peptide (PepCR2 or P10) targeted to pp150 conserved region 2 led to a significant reduction in murine CMV (MCMV) growth in cell culture, paving the way for in vivo testing in a mouse model of CMV infection. However, the general pharmacokinetic parameters of peptides, including rapid degradation and limited tissue and cell membrane permeability, pose a challenge to their successful use in vivo. Therefore, we designed a biopolymer-stabilized elastin-like polypeptide (ELP) fusion construct (ELP-P10) to enhance the bioavailability of P10. Antiviral efficacy and cytotoxic effects of ELP-P10 were studied in cell culture, and pharmacokinetics, biodistribution, and antiviral efficacy were studied in a mouse model of CMV infection. ELP-P10 maintained significant antiviral activity in cell culture, and this conjugation significantly enhanced P10 bioavailability in mouse tissues. The fluorescently labeled ELP-P10 accumulated to higher levels in mouse liver and kidneys as compared to the unconjugated P10. Moreover, viral titers from vital organs of MCMV-infected mice indicated a significant reduction of virus load upon ELP-P10 treatment. Therefore, ELP-P10 has the potential to be developed into an effective antiviral against CMV infection.
Collapse
Affiliation(s)
- Komal Beeton
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Dipanwita Mitra
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Adesanya A Akinleye
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - John A Howell
- Department of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Christian S Yu
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Gene L Bidwell
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
- Department of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Ritesh Tandon
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA.
- Office of Research Infrastructure Programs, National Institute of Health, 6701 Democracy Blvd., Bethesda, MD, 20892, USA.
| |
Collapse
|
2
|
Mahar UR, Jhatial MA, Qazi R, Ahmed U, Ahsan B, Bokhari SWI. Significance of CMV reactivation in non-allogeneic stem cell transplant patients with cancers: experience of single tertiary care cancer institute. Virusdisease 2023; 34:383-388. [PMID: 37780907 PMCID: PMC10533462 DOI: 10.1007/s13337-023-00839-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 08/22/2023] [Indexed: 10/03/2023] Open
Abstract
CMV reactivation is rare in hematological as well as solid organ malignancies in non-allogeneic stem cell transplant settings. An increasing number of patients undergoing active treatment or follow-up and diagnosed with CMV reactivation in recent years prompted us to investigate the risk factors and outcomes of CMV reactivation or disease. This was a hospital-based retrospective study that included 174 cancer patients suspected of CMV reactivation. Among them, forty-one tested positive for CMV viremia. The risk factors for CMV reactivation included the use of steroids in 78% of patients, active cancer in 43.9%, use of a monoclonal antibody rituximab in 31.7%, a history of radiation in 26.8%, and autologous stem cell transplant in 12% of patients. The median age was 36 years, and the most common clinical feature was fever (58.5%; n = 24), followed by GI symptoms (12.1%; n = 5), respiratory symptoms (14.6%; n = 6), cytopenia (7.3%; n = 3), and visual/neurological symptoms (4.8%; n = 2). The mean CMV viral load was 37,332 copies/ml (range: 75.00-633,000.00 copies/ml). Nineteen patients received CMV treatment with an average treatment duration of 81.5 days. The median overall survival was 2 months, with 12.0% of patients alive at 5 years. CMV reactivation is associated with significant morbidity and mortality. We recommend vigilant monitoring of CMV-related symptoms, with a low threshold for testing and treatment, for patients with multiple risk factors for CMV reactivation.
Collapse
Affiliation(s)
- Uzma Rasool Mahar
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Mussadique Ali Jhatial
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Romena Qazi
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Usman Ahmed
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Bushra Ahsan
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Syed Waqas Imam Bokhari
- Department of Medical Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| |
Collapse
|
3
|
Jayadev C, Sanjay S, Handa A, Agrawal S. Human immunodeficiency virus retinopathy with presumed cytomegalovirus retinitis with macular oedema in a diabetic. BMJ Case Rep 2023; 16:e252710. [PMID: 37024150 PMCID: PMC10083806 DOI: 10.1136/bcr-2022-252710] [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: 04/08/2023] Open
Abstract
A man in his early 50s on regular follow-up for a stable non-proliferative diabetic retinopathy (NPDR) presented with decreased vision, worsening of retinal pathology and macular oedema in both eyes. His corrected distance visual acuity (CDVA) was 6/9 in the right eye and 6/15 in the left eye and fundus examination showed multiple intraretinal haemorrhages in all quadrants. His systemic workup revealed a severe thrombocytopaenia, which prompted a further detailed systemic evaluation revealing him to be positive for HIV with retinopathy complicating the pre-existing NPDR. Given the significant inflammation and macular oedema, a cocktail of intravitreal bevacizumab, ganciclovir and dexamethasone was administered. The retinopathy and macular oedema resolved and the CDVA improved to 6/6 in both eyes over a 6-month follow-up period. Any sudden worsening of fundus findings in a patient with diabetes necessitates immediate and detailed ocular and systemic evaluation, especially when the immune status is unknown.
Collapse
Affiliation(s)
- Chaitra Jayadev
- Vitreoretina Department, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Srinivasan Sanjay
- Uveitis and Ocular Immunology, Narayana Nethralaya, Bangalore, Karnataka, India
| | - Ashit Handa
- Vitreoretina Department, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Sameeksha Agrawal
- Vitreoretina Department, Narayana Nethralaya, Bengaluru, Karnataka, India
| |
Collapse
|
4
|
La Y, Kwon DE, Yoo SG, Lee KH, Han SH, Song YG. Human cytomegalovirus seroprevalence and titres in solid organ transplant recipients and transplant donors in Seoul, South Korea. BMC Infect Dis 2019; 19:948. [PMID: 31703564 PMCID: PMC6842252 DOI: 10.1186/s12879-019-4607-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 10/30/2019] [Indexed: 12/29/2022] Open
Abstract
Background Human cytomegalovirus (HCMV) can cause poor outcomes in solid organ transplant (SOT) recipients; moreover, it is associated with cardiovascular diseases (CVD) in the general population. Accordingly, anti-HCMV immunoglobulin G (IgG) seroepidemiology may be useful in identifying the risk of post-SOT HCMV infection or disease as well as immunosenescence or CVD. However, HCMV seroprevalence and titre have not been fully evaluated with regard to age distribution or compared between SOT recipients and healthy individuals in South Korea. Methods We retrospectively retrieved all unduplicated anti-HCMV IgG results of individuals aged > 1 year evaluated between July 2006 and November 2017 at Severance Hospital in Seoul. The cohort, excluding haematopoietic stem cell transplant recipients and subjects with equivocal values, included 2184 SOT recipients and 3015 healthy transplant donors. All IgG results in the SOT recipients were measured during the pre-transplant period. Results The overall IgG seroprevalence and titres were significantly higher among SOT recipients than among healthy donors (98.7% vs. 88.6%, p < 0.001, and 64.7 ± 44.3 vs. 49.8 ± 20.6 arbitrary units/mL, p < 0.001, respectively). The lowest seropositive rate in the SOT group was observed in recipients aged between 11 and 15 years (70.6%). The frequency of seropositivity among adults aged ≥41 years increased to ≥90% in SOT recipients and healthy donors. Age was independently associated with higher HCMV seroprevalence (41–60 years, OR, 76.4, 95% CI, 24.5–238.9, p < 0.001; ≥ 61 years, OR, 4.4, 95% CI, 1.3–14.9, p < 0.001, compared to ≤40 years). The healthy donor group had an independently low HCMV seropositive rate (OR, 0.1, 95% CI, 0.1–0.2, p < 0.001). Conclusions HCMV seropositivity was the lowest among school-aged children and adolescents. IgG testing revealed an intermediate serostatus risk of post-transplant HCMV infection and disease for most adult SOT recipients in South Korea.
Collapse
Affiliation(s)
- Yeonju La
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Da Eun Kwon
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seul Gi Yoo
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyoung Hwa Lee
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sang Hoon Han
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Yong Goo Song
- Department of Internal Medicine, Division of Infectious Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
5
|
Lu Y, Liu X, Huang Y, Liao Y, Xi T, Zhang Y, Shu S, Fang F. The Effects of IL10 and NK Cells on the Susceptibility to Mouse Cytomegalovirus in BALB/c Mice despite the Compensation of IFNγ. Intervirology 2018; 61:111-122. [PMID: 30336455 DOI: 10.1159/000493316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/27/2018] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The aim of this study was to determine which factors lead to the susceptibility to mouse cytomegalovirus (MCMV) in the spleens of BALB/c mice. METHODS BALB/c and C57BL/6 mice were randomly divided into a control group and an infection group and sacrificed on day 0, 1, 3, 7, 14, and 28 postinfection. The cytotoxicity of NK cells was determined by evaluating lactate dehydrogenase contents. Flow cytometry was used to analyze activated NK cells, IFNγ+ NK cells, and total NK cells in the spleen. The pathological changes of spleens in each group were analyzed by HE staining. The expression of IL10, IL18, IFNγ, Thpok, and IFNβ of spleens was determined by quantitative reverse transcriptase PCR. The viral loads of MCMV in spleens and salivary glands were also detected. RESULTS We found that spleen NK cells and IL10 in C57BL/6 mice possessed more powerful immunity to MCMV than BALB/c mice. In BALB/c mice, combined effects of the cytotoxicity of NK cells and IFNγ in spleens still ended up with deficient control of infection. CONCLUSION The functional shortage of NK cells and inappropriate expression of IL10 result in the susceptibility to MCMV in BALB/c mice.
Collapse
|
6
|
Zafeiropoulos P, Tamboura P, Dimou M, Christodoulou E, Stefaniotou M. Cytomegalovirus retinitis, in a diabetic immunocompetent patient, after intravitreal ranibizumab injection. Eur J Ophthalmol 2018; 29:NP10-NP12. [PMID: 29747535 DOI: 10.1177/1120672118772525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We here report a case of cytomegalovirus retinitis in a diabetic patient that occurred after intravitreal ranibizumab injection. A 75-year-old woman was treated with intravitreal ranibizumab injections for diabetic macular edema. During this period, a retinitis occurred in her left eye along with increased IgG and later IgM cytomegalovirus antibody titers. Ocular and intravenous ganciclovir was administered. Cytomegalovirus retinitis subsided post treatment with residual areas of retinal atrophy. Ophthalmologists should be aware of the incidence of cytomegalovirus retinitis, in diabetic patients, after ranibizumab injection.
Collapse
Affiliation(s)
| | | | - Maria Dimou
- 2 General Hospital of Ptolemaida, Ptolemaida, Greece
| | | | | |
Collapse
|