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Aloraij Y, Alsheikh A, Alyousef RA, Alhamlan F, Suaifan GA, Muthana S, Al-Kattan K, Zourob M. Development of a Rapid Immuno-Based Screening Assay for the Detection of Adenovirus in Eye Infections. ACS OMEGA 2022; 7:17555-17562. [PMID: 35664618 PMCID: PMC9161248 DOI: 10.1021/acsomega.1c07022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 03/10/2022] [Indexed: 06/15/2023]
Abstract
Despite progress in fighting infectious diseases, human pathogenesis and death caused by infectious diseases remain relatively high worldwide exceeding that of cancer and cardiovascular diseases. Human adenovirus (HAdV) infects cells of the upper respiratory tract causing flu-like symptoms that are accompanied by pain and inflammation. Diagnosis of HAdV is commonly achieved by conventional methods such as viral cultures, immunoassays, and polymerase chain reaction (PCR) techniques. However, there are a variety of problems with conventional methods including slow isolation and propagation, inhibition by neutralizing antibodies, low sensitivity of immunoassays, and the diversity of HAdV strains for the PCR technique. Herein, we report the development and evaluation of a novel, simple, and reliable nanobased immunosensing technique for the rapid detection of human adenoviruses (HAdVs) that cause eye infections. This rapid and low-cost assay can be used for screening and quantitative tests with a detection limit of 102 pfu/mL in less than 2 min. The sensing platform is based on a sandwich assay that can detect HAdVs visually by a color change. Sensor specificity was demonstrated using other common viral antigens, including Flu A, Flu B, coronavirus (COV), and Middle East respiratory syndrome coronavirus (MERS COV). This cotton-based testing device potentially exhibits many of the desired characteristics of a suitable point-of-care and portable test, which can be carried out by nurses or clinicians especially for low-resource settings.
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Affiliation(s)
- Yumna Aloraij
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Alanoud Alsheikh
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Reema A. Alyousef
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Fatimah Alhamlan
- King
Faisal Specialist Hospital and Research Center, Zahrawi Street,
Al Maather, Riyadh 12713, Saudi Arabia
| | - Ghadeer A.R.Y. Suaifan
- Department
of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman-Jordan, P.O. Box 11942, Amman 11942, Jordan
| | - Saddam Muthana
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Khaled Al-Kattan
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Mohammed Zourob
- Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
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2
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Gottlieb DJ, Clancy LE, Withers B, McGuire HM, Luciani F, Singh M, Hughes B, Gloss B, Kliman D, Ma CKK, Panicker S, Bishop D, Dubosq MC, Li Z, Avdic S, Micklethwaite K, Blyth E. Prophylactic antigen-specific T-cells targeting seven viral and fungal pathogens after allogeneic haemopoietic stem cell transplant. Clin Transl Immunology 2021; 10:e1249. [PMID: 33747509 PMCID: PMC7960021 DOI: 10.1002/cti2.1249] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/18/2020] [Accepted: 01/12/2021] [Indexed: 01/16/2023] Open
Abstract
Objectives Adoptive immunotherapy using donor-derived antigen-specific T-cells can prevent and treat infection after allogeneic haemopoietic stem cell transplant (HSCT). Methods We treated 11 patients with a prophylactic infusion of 2 × 107 cells per square metre donor-derived T-cells targeting seven infections (six viral and one fungal) following HSCT. Targeted pathogens were cytomegalovirus (CMV), Epstein-Barr virus (EBV), adenovirus, varicella zoster virus, influenza, BK virus (BKV) and Aspergillus fumigatus. Results T-cell products were successfully generated in all patients with 10 products responsive to 6 or 7 infections. T-cell infusions were associated with increases in antigen-experienced activated CD8+ T-cells by day 30. CMV, EBV and BKV reactivation occurred in the majority of patients and was well controlled except where glucocorticoids were administered soon after T-cell infusion. Three patients in that circumstance developed CMV tissue infection. No patient required treatment for invasive fungal infection. The most common CMV and EBV TCR clonotypes in the infusion product became the most common clonotypes seen at day 30 post-T-cell infusion. Donors and their recipients were recruited to the study prior to transplant. Grade III/IV graft-versus-host disease developed in four patients. At a median follow-up of 390 days post-transplant, six patients had died, 5 of relapse, and 1 of multi-organ failure. Infection did not contribute to death in any patient. Conclusion Rapid reconstitution of immunity to a broad range of viral and fungal infections can be achieved using a multi-pathogen-specific T-cell product. The development of GVHD after T-cell infusion suggests that infection-specific T-cell therapy after allogeneic stem cell transplant should be combined with other strategies to reduce graft-versus-host disease.
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Affiliation(s)
- David Jonathan Gottlieb
- Sydney Medical School University of Sydney Sydney NSW Australia.,Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Leighton Edward Clancy
- Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Sydney Cellular Therapies Laboratory NSW Health Pathology ICPMR Sydney NSW Australia
| | - Barbara Withers
- Sydney Medical School University of Sydney Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Helen Marie McGuire
- Ramaciotti Facility for Human Systems Biology The University of Sydney Sydney NSW Australia.,Charles Perkins Centre University of Sydney Sydney NSW Australia.,Discipline of Pathology Faculty of Medicine and Health The University of Sydney Camperdown NSW Australia
| | - Fabio Luciani
- Kirby Institute University of New South Wales Sydney NSW Australia
| | - Mandeep Singh
- The Garvan Institute of Medical Research Darlinghurst NSW Australia.,Faculty of Medicine St. Vincent's Clinical School UNSW Sydney NSW Australia
| | - Brendan Hughes
- Kirby Institute University of New South Wales Sydney NSW Australia
| | - Brian Gloss
- Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - David Kliman
- Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia
| | - Chun Kei Kris Ma
- Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia
| | - Shyam Panicker
- Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia
| | - David Bishop
- Sydney Medical School University of Sydney Sydney NSW Australia.,Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Ming-Celine Dubosq
- Sydney Medical School University of Sydney Sydney NSW Australia.,Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Ziduo Li
- Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Selmir Avdic
- Sydney Medical School University of Sydney Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia
| | - Kenneth Micklethwaite
- Sydney Medical School University of Sydney Sydney NSW Australia.,Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia.,Sydney Cellular Therapies Laboratory NSW Health Pathology ICPMR Sydney NSW Australia
| | - Emily Blyth
- Sydney Medical School University of Sydney Sydney NSW Australia.,Blood Transplant and Cell Therapies Program Westmead Hospital Sydney NSW Australia.,Westmead Institute for Medical Research at the University of Sydney Westmead NSW Australia.,Sydney Cellular Therapies Laboratory NSW Health Pathology ICPMR Sydney NSW Australia
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3
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Wold WSM, Tollefson AE, Ying B, Spencer JF, Toth K. Drug development against human adenoviruses and its advancement by Syrian hamster models. FEMS Microbiol Rev 2019; 43:380-388. [PMID: 30916746 DOI: 10.1093/femsre/fuz008] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/25/2019] [Indexed: 02/02/2023] Open
Abstract
The symptoms of human adenovirus infections are generally mild and self-limiting. However, these infections have been gaining importance in recent years because of a growing number of immunocompromised patients. Solid organ and hematopoietic stem cell transplant patients are subjected to severe immunosuppressive regimes and cannot efficaciously eliminate virus infections. In these patients, adenovirus infections can develop into deadly multi-organ disseminated disease. Presently, in the absence of approved therapies, physicians rely on drugs developed for other purposes to treat adenovirus infections. As there is a need for anti-adenoviral therapies, researchers have been developing new agents and repurposing existing ones to treat adenovirus infections. There are several small molecule drugs that are being tested for their efficacy against human adenoviruses; some of these have reached clinical trials, while others are still in the preclinical phase. Besides these compounds, research on immunotherapy against adenoviral infection has made significant progress, promising another modality for treatment. The availability of an animal model confirmed the activity of some drugs already in clinical use while proving that others are inactive. This led to the identification of several lead compounds that await further development. In the present article, we review the current status of anti-adenoviral therapies and their advancement by in vivo studies in the Syrian hamster model.
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Affiliation(s)
- William S M Wold
- Saint Louis University School of Medicine, Department of Molecular Microbiology and Immunology, 1100 S. Grand Boulevard, St. Louis, MO, USA
| | - Ann E Tollefson
- Saint Louis University School of Medicine, Department of Molecular Microbiology and Immunology, 1100 S. Grand Boulevard, St. Louis, MO, USA
| | - Baoling Ying
- Saint Louis University School of Medicine, Department of Molecular Microbiology and Immunology, 1100 S. Grand Boulevard, St. Louis, MO, USA
| | - Jacqueline F Spencer
- Saint Louis University School of Medicine, Department of Molecular Microbiology and Immunology, 1100 S. Grand Boulevard, St. Louis, MO, USA
| | - Karoly Toth
- Saint Louis University School of Medicine, Department of Molecular Microbiology and Immunology, 1100 S. Grand Boulevard, St. Louis, MO, USA
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4
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Cirillo M, Tan P, Sturm M, Cole C. Cellular Immunotherapy for Hematologic Malignancies: Beyond Bone Marrow Transplantation. Biol Blood Marrow Transplant 2017; 24:433-442. [PMID: 29102721 DOI: 10.1016/j.bbmt.2017.10.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/25/2017] [Indexed: 02/06/2023]
Abstract
Immunotherapy has changed treatment practices for many hematologic malignancies. Even in the current era of targeted therapy, chemotherapy remains the backbone of treatment for many hematologic malignancies, especially in acute leukemias, where relapse remains the major cause of mortality. Application of novel immunotherapies in hematology attempts to harness the killing power of the immune system against leukemia and lymphoma. Cellular immunotherapy is evolving rapidly for high-risk hematologic disorders. Recent advances include chimeric antigen-receptor T cells, mesenchymal stromal/stem cells, dendritic cell tumor vaccines, cytokine-induced killer cells, and virus-specific T cells. The advantages of nontransplantation cellular immunotherapy include suitability for patients for whom transplantation has failed or is contraindicated, and a potentially less-toxic treatment alternative to transplantation for relapsed/refractory patients. This review examines those emerging cellular immunotherapies that are changing treatment paradigms for patients with hematologic malignancies.
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Affiliation(s)
- Melita Cirillo
- Department of Haematology Cell and Tissue Therapies, Royal Perth Hospital, Perth, Western Australia, Australia.
| | - Peter Tan
- Department of Haematology Cell and Tissue Therapies, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Marian Sturm
- Department of Haematology Cell and Tissue Therapies, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Catherine Cole
- Department of Haematology Cell and Tissue Therapies, Royal Perth Hospital, Perth, Western Australia, Australia
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5
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Gene and cell therapy for children--new medicines, new challenges? Adv Drug Deliv Rev 2014; 73:162-9. [PMID: 24583376 PMCID: PMC4074676 DOI: 10.1016/j.addr.2014.02.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 02/10/2014] [Accepted: 02/18/2014] [Indexed: 12/21/2022]
Abstract
The range of possible gene and cell therapy applications is expanding at an extremely rapid rate and advanced therapy medicinal products (ATMPs) are currently the hottest topic in novel medicines, particularly for inherited diseases. Paediatric patients stand to gain enormously from these novel therapies as it now seems plausible to develop a gene or cell therapy for a vast number of inherited diseases. There are a wide variety of potential gene and cell therapies in various stages of development. Patients who received first gene therapy treatments for primary immune deficiencies (PIDs) are reaching 10 and 15 years post-treatment, with robust and sustained immune recovery. Cell therapy clinical trials are underway for a variety of tissues including corneal, retinal and muscle repair and islet cell transplantation. Various cell therapy approaches are also being trialled to enhance the safety of bone marrow transplants, which should improve survival rates in childhood cancers and PIDs. Progress in genetic engineering of lymphocyte populations to target and kill cancerous cells is also described. If successful these ATMPs may enhance or replace the existing chemo-ablative therapy for several paediatric cancers. Emerging applications of gene therapy now include skin and neurological disorders such as epidermolysis bullosa, epilepsy and leukodystrophy. Gene therapy trials for haemophilia, muscular dystrophy and a range of metabolic disorders are underway. There is a vast array of potential advanced therapy medicinal products (ATMPs), and these are likely to be more cost effective than existing medicines. However, the first clinical trials have not been without setbacks and some of the key adverse events are discussed. Furthermore, the arrival of this novel class of therapies brings many new challenges for the healthcare industry. We present a summary of the key non-clinical factors required for successful delivery of these potential treatments. Technological advances are needed in vector design, raw material manufacture, cell culture and transduction methodology, and particularly in making all these technologies readily scalable.
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6
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Wood D, Wesselschmidt R, Hematti P, Gee AP, Rooney C, Silberstein L, Armant M, Couture L, Wagner JE, McKenna DH, Hei D, Mondoro TH, Welniak L, Lindblad R. An update from the United States National Heart, Lung, and Blood Institute-funded Production Assistance for Cellular Therapies (PACT) program: a decade of cell therapy. Clin Transl Sci 2014; 7:93-9. [PMID: 24655892 DOI: 10.1111/cts.12148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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7
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Management of adenovirus in children after allogeneic hematopoietic stem cell transplantation. Adv Hematol 2013; 2013:176418. [PMID: 24288536 PMCID: PMC3830830 DOI: 10.1155/2013/176418] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/06/2013] [Indexed: 11/18/2022] Open
Abstract
Adenovirus (ADV) can cause significant morbidity and mortality in children following haematopoietic stem cell transplantation (HSCT), with an incidence of up to 27% and notable associated morbidity and mortality. T-cell depleted grafts and severe lymphopenia are major risk factors for the development of adenovirus disease after HSCT. Current antiviral treatments are at best virostatic and may have significant side effects. Adoptive transfer of donor-derived virus-specific T cells has been shown to be an effective strategy for the prevention and treatment of ADV infection after HSCT. Here we review progress in the field and present a pathway for the management of adenovirus in the posttransplant setting.
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8
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Al-Siyabi T, Binkhamis K, Wilcox M, Wong S, Pabbaraju K, Tellier R, Hatchette TF, LeBlanc JJ. A cost effective real-time PCR for the detection of adenovirus from viral swabs. Virol J 2013; 10:184. [PMID: 23758993 PMCID: PMC3679997 DOI: 10.1186/1743-422x-10-184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 05/23/2013] [Indexed: 11/25/2022] Open
Abstract
Compared to traditional testing strategies, nucleic acid amplification tests such as real-time PCR offer many advantages for the detection of human adenoviruses. However, commercial assays are expensive and cost prohibitive for many clinical laboratories. To overcome fiscal challenges, a cost effective strategy was developed using a combination of homogenization and heat treatment with an “in-house” real-time PCR. In 196 swabs submitted for adenovirus detection, this crude extraction method showed performance characteristics equivalent to viral DNA obtained from a commercial nucleic acid extraction. In addition, the in-house real-time PCR outperformed traditional testing strategies using virus culture, with sensitivities of 100% and 69.2%, respectively. Overall, the combination of homogenization and heat treatment with a sensitive in-house real-time PCR provides accurate results at a cost comparable to viral culture.
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Affiliation(s)
- Turkiya Al-Siyabi
- Division of Microbiology, Department of Pathology and Laboratory Medicine, Capital District Health Authority, Room 404B, Mackenzie Building, 5788 University Ave, Halifax NS B3H 1V8, Canada
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9
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Yilmaz M, Chemaly RF, Han XY, Thall PF, Fox PS, Tarrand JJ, De Lima MJ, Hosing CM, Popat UR, Shpall E, Champlin RE, Qazilbash MH. Adenoviral infections in adult allogeneic hematopoietic SCT recipients: a single center experience. Bone Marrow Transplant 2013; 48:1218-23. [PMID: 23503529 DOI: 10.1038/bmt.2013.33] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/29/2013] [Accepted: 02/09/2013] [Indexed: 01/28/2023]
Abstract
Disseminated adenoviral infection (AI) is associated with profound immunosuppression and poor outcome after allogeneic hematopoietic SCT (allo-HSCT). A better understanding of AI in allo-HSCT recipients can serve as a basis to develop more effective management strategies. We evaluated all adult patients who received allo-HSCT at MD Anderson Cancer Center between 1999 and 2008. Among the 2879 allo-HSCT patients, 73 (2.5%) were diagnosed with AI. Enteritis (26%) and pneumonia (24%) were the most common clinical manifestations; pneumonia was the most common cause of adenovirus-associated death. A multivariable Bayesian logistic regression showed that when the joint effects of all covariates were accounted for, cord blood transplant, absolute lymphocyte count (ALC) ≤ 200/mm(3) and male gender were associated with a higher probability of disseminated AI. The OS was significantly worse for patients with AI that was disseminated rather than localized (median of 5 months vs median of 28 months, P<0.001) and for patients with ALC ≤ 200/mm(3) (P<0.001). Disseminated AI, in patients who received allo-HSCT, is a significant cause of morbidity and mortality. Strategies for early diagnosis and intervention are essential, especially for high-risk patients.
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Affiliation(s)
- M Yilmaz
- Department of Leukemia, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
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10
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George D, El-Mallawany NK, Jin Z, Geyer M, Della-Latta P, Satwani P, Garvin JH, Bradley MB, Bhatia M, van de Ven C, Morris E, Schwartz J, Cairo MS. Adenovirus infection in paediatric allogeneic stem cell transplantation recipients is a major independent factor for significantly increasing the risk of treatment related mortality. Br J Haematol 2011; 156:99-108. [DOI: 10.1111/j.1365-2141.2010.08468.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Jeulin H, Salmon A, Bordigoni P, Venard V. Diagnostic value of quantitative PCR for adenovirus detection in stool samples as compared with antigen detection and cell culture in haematopoietic stem cell transplant recipients. Clin Microbiol Infect 2011; 17:1674-80. [PMID: 21481083 DOI: 10.1111/j.1469-0691.2011.03488.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Adenovirus (AdV) infections constitute a significant cause of morbidity and mortality during haematopoietic stem cell transplantation. Recent guidelines recommend repeated screening for AdV in whole blood (WB), with quantitative PCR (qPCR) as the reference standard. Despite pre-emptive antiviral treatment based on qPCR in WB, the mortality rate after disseminated AdV infection remains very high. The aim of our study was to advance early screening for AdV, using a standardized method, so as to enable the earlier initiation of antiviral treatment or adoptive immunotherapy. The diagnostic value of AdV DNA quantification in stool samples was investigated retrospectively and compared with antigen detection and cell culture in 21 patients with AdV infection, from 182 patients followed in the Transplant Unit of Nancy University Hospital Centre, including 18 patients with systemic infection. In 16/18 patients with positive AdV viraemia, AdV DNA was present in stool samples earlier than in WB (median, 42 days; range, 3-199 days), whereas both antigen detection and cell culture were still negative for 11/18 patients with systemic AdV infection. The course of AdV viral loads in stool samples was predictive of adenoviraemia (sensitivity, 89%). Very late and lethal AdV infections were observed in cord blood transplant recipients, and would have been detected much earlier with the use of qPCR on stool samples. This study confirmed that quantification of AdV in stool samples by qPCR is beneficial for the management of transplant recipients, with or without antigen detection.
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Affiliation(s)
- H Jeulin
- Laboratory of Virology, CHU de Nancy, Hôpital Brabois Adultes, Nancy, France.
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12
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Abstract
Among the microorganisms that cause diseases of medical or veterinary importance, the only group that is entirely dependent on the host, and hence not easily amenable to therapy via pharmaceuticals, is the viruses. Since viruses are obligate intracellular pathogens, and therefore depend a great deal on cellular processes, direct therapy of viral infections is difficult. Thus, modifying or targeting nonspecific or specific immune responses is an important aspect of intervention of ongoing viral infections. However, as a result of the unavailability of effective vaccines and the extended duration of manifestation, chronic viral infections are the most suitable for immunotherapies. We present an overview of various immunological strategies that have been applied for treating viral infections after exposure to the infectious agent.
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Affiliation(s)
- Nagendra R Hegde
- Bharat Biotech Foundation, Genome Valley, Turkapally, Shameerpet Mandal, Hyderabad 500078, India.
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13
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Comparison of in-house real-time quantitative PCR to the Adenovirus R-Gene kit for determination of adenovirus load in clinical samples. J Clin Microbiol 2010; 48:3132-7. [PMID: 20631100 DOI: 10.1128/jcm.00976-10] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In the context of hematopoietic stem cell transplantation, adenovirus infections are associated with relevant mortality and morbidity. Detection of adenovirus DNA by quantitative PCR is the "gold standard" for these patients. A total of 150 samples, namely, 78 whole-blood, 22 cerebrospinal fluid, 24 digestive biopsy, and 26 stool samples, from 29 patients, including 24 hematopoietic stem cell transplant recipients, were tested for the detection of adenovirus using an in-house real-time quantitative PCR assay (A. Heim, C. Ebnet, G. Harste, and P. Pring-Akerblom, J. Med. Virol. 70:228-239, 2003) and the commercially available Adenovirus R-Gene kit. Adenovirus DNA was automatically isolated from whole-blood samples (Magna Pure LC system; Roche) or was manually extracted from other specimens (QIAamp; Qiagen) using the appropriate kit. The intra- and interassay reproducibilities and sensitivities were evaluated with cell culture supernatant dilutions. Of the 150 samples tested, 86 were found to be positive and 55 were found to be negative using both techniques. Nine (6%) discordant results were obtained. In most cases, discrepant results concerned samples with low viral loads. Quantitative results for all concordant positive samples were analyzed using the Spearman correlation test. A good correlation between the results of the in-house assay and those of the kit assay was obtained (r = 0.95; P < 0.001). Regarding the threshold cycle value for internal control spiked samples, none of the 150 samples tested contained a PCR inhibitor. In conclusion, a relevant correlation of results between the in-house assay and the kit assay, as well as the high-quality reproducibility and sensitivity of the kit assay, warranted its use for follow-up of hematopoietic stem cell transplantation recipients.
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Hutnick NA, Carnathan D, Demers K, Makedonas G, Ertl HCJ, Betts MR. Adenovirus-specific human T cells are pervasive, polyfunctional, and cross-reactive. Vaccine 2010; 28:1932-41. [PMID: 20188249 DOI: 10.1016/j.vaccine.2009.10.091] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Pre-existing immunity to adenovirus (Ad) reduces the efficacy of Ad-based vaccines. The goal of this study was to define the prevalence, magnitude, functionality and phenotype of Ad-specific human T cells directly ex vivo. To study the magnitude of T-cell responses to Ad, we developed a highly reproducible whole Ad vector stimulation assay for use with polychromatic flow cytometry. Ad-specific CD4(+) and CD8(+) T-cells were detected in all 17 human subjects tested and were capable of proliferating upon restimulation. Ad5-specific CD4(+) T cells were primarily monofunctional CD4(+) T cells that produced IL-2, IFN-gamma or TNFalpha and expressed the memory markers CD27 and CD45RO. In contrast, Ad5-specific CD8(+) T cells were more polyfunctional, expressing effector-like combinations of IFN-gamma, MIP1alpha and perforin, and generally lacked CD27 and CD45RO expression. Ad-specific CD4(+) and CD8(+) T-cell responses against chimpanzee-derived AdC6 and AdC7 were found in all subjects, indicating the commonality of cross-serotype reactivity of Ad-specific T cells. This cross-reactivity is due in part to extensive CD4(+) and CD8(+) T-cell recognition of hexon regions conserved between multiple Ad serotypes. The prevalence, cross-reactivity and effector-like functions of Ad-specific T cells in humans may affect the efficacy of Ad vector-based vaccines by eliminating vector infected cells even when rare serotype Ad vectors are employed.
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Affiliation(s)
- Natalie A Hutnick
- Microbiology Department, University of Pennsylvania, Philadelphia, PA 19104, United States
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Adenovirus Infection in the Immunocompromised Host. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 659:153-74. [DOI: 10.1007/978-1-4419-0981-7_13] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Reed W, Noga SJ, Gee AP, Rooney CM, Wagner JE, McCullough J, McKenna DH, Whiteside TL, Donnenberg AD, Baker AK, Lindblad RW, Wagner EL, Mondoro TH. Production Assistance for Cellular Therapies (PACT): four-year experience from the United States National Heart, Lung, and Blood Institute (NHLBI) contract research program in cell and tissue therapies. Transfusion 2008; 49:786-96. [PMID: 19170985 DOI: 10.1111/j.1537-2995.2008.02027.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND In 2002, the US National Heart, Lung, and Blood Institute (NHLBI) conducted a workshop to determine needs of the cell therapy community. A consensus emerged that improved access to cGMP facilities, regulatory assistance, and training would foster the advancement of cellular therapy. STUDY DESIGN AND METHODS A 2003 NHLBI request for proposals resulted in four contracts being awarded to three cell-manufacturing facilities (Baylor College of Medicine, University of Minnesota, and University of Pittsburgh) and one administrative center (The EMMES Corporation). As a result, Production Assistance for Cellular Therapies (PACT) was formed. RESULTS As of October 1, 2008, PACT has received 65 preliminary applications of which 45 have been approved for product manufacture. A variety of cell therapies are represented including T-regulatory cells, natural killer cells, adipose-derived stem cells, cardiac progenitor cells for cardiac disease, hematopoietic progenitor cells (HPCs) for central nervous system applications, cytotoxic T lymphocytes, and dendritic cells. A total of 169 products have been administered under 12 applications and 2 reagents were manufactured and delivered. Fourteen peer-reviewed publications and 15 abstracts have resulted from the PACT project to date. A cell therapy textbook is nearly complete. PACT technical projects have addressed assay development, rapid endotoxin testing, shipping of cell products, and CD34+ HPC isolation from low-volume marrow. Educational Web seminars and on-site training through workshops have been conducted. CONCLUSIONS PACT is an active and successful cell therapy manufacturing resource in the United States, addressing research and training while forging relationships among academia, industry, and participating institutions.
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Affiliation(s)
- William Reed
- Blood Systems Research Institute, 270 Masonic Avenue, San Francisco, CA 94118, USA. william.reed@.ucsf.edu
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Lenaerts L, De Clercq E, Naesens L. Clinical features and treatment of adenovirus infections. Rev Med Virol 2008; 18:357-74. [PMID: 18655013 DOI: 10.1002/rmv.589] [Citation(s) in RCA: 172] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Adenoviruses (Ads) are common opportunistic pathogens that are rarely associated with severe clinical symptoms in healthy individuals. In contrast, in patients with compromised immunity, Ad infections often result in disseminated and potentially life-threatening disease. Among these are AIDS patients, individuals with hereditary immunodeficiencies and recipients of solid organ or haematopoietic stem cell transplants (HSCT) who receive immunosuppressive therapy. The latter account for the largest number of severe Ad infections. There is currently no formally approved antiviral therapy for the treatment of severe Ad keratoconjunctivitis and life-threatening Ad infections in immunocompromised patients. Here we update current knowledge on Ad biology, the clinical features observed in different patient groups and specific immune responses towards Ad infections. In addition, we review current and future treatment options, including: (i) the antiviral drugs cidofovir, ribavirin and new investigational compounds, as evaluated in the clinic or in relevant animal models, as well as (ii) novel immunotherapeutic strategies.
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Affiliation(s)
- Liesbeth Lenaerts
- Division of Virology and Chemotherapy, Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
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Chakrabarti S. Adenovirus infections after hematopoietic stem cell transplantation: still unravelling the story. Clin Infect Dis 2007; 45:966-8. [PMID: 17879909 DOI: 10.1086/521850] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Accepted: 07/06/2007] [Indexed: 12/26/2022] Open
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Myers GD, Bollard CM, Wu MF, Weiss H, Rooney CM, Heslop HE, Leen AM. Reconstitution of adenovirus-specific cell-mediated immunity in pediatric patients after hematopoietic stem cell transplantation. Bone Marrow Transplant 2007; 39:677-86. [PMID: 17417664 DOI: 10.1038/sj.bmt.1705645] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Adenovirus (adv) is a significant cause of morbidity and mortality in pediatric hematopoietic stem cell transplant recipients, and control of infection seems to require antigen-specific T cells. We evaluated the recovery of adv-specific cellular immunity in this patient population related to degree of T-cell immunosuppressive therapy and compared this to adv cellular immunity of normal donors. Over 12 months, we monitored for adv DNA in stool and blood of patients and in the blood of a normal donor group. Twenty-two pediatric hematopoietic stem cell transplant (HSCT) patients (14 months-20 years) who received matched-related (MRD n=6), mismatched related (Haplo n=6) or matched unrelated donor (MUD n=10) grafts, were followed and results compared to healthy controls (n=8). Adv was detected by polymerase chain reaction in blood and/or stool from 81.8% of patients on at least one occasion post-HSCT, but only 68% of patients developed symptomatic adv infections. Recovery of adv-specific T cells was significantly delayed in the MUD and Haplo recipients, whereas recovery in the MRD group was similar to levels detected in healthy donors within 30 days post-transplant. In conclusion, recipients of alternative donor transplants at our institution have significantly delayed adv-specific cellular immune recovery, which correlates to an increased risk of adv-associated morbidity and mortality.
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Affiliation(s)
- G D Myers
- Center for Cell and Gene Therapy, Baylor College of Medicine, The Methodist Hospital, and Texas Children's Hospital, Houston, TX 77030, USA
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Abstract
The combination of the induction of lymphopenia and vaccination and/or T cell transfer is garnering much attention for cancer treatment. Preclinical studies have shown that the induction of lymphopenia by chemotherapy or radiation can enhance the antitumor efficacy of several distinct, cell-based immunotherapeutic approaches. The mechanism(s) by which such enhancement is achieved are being intensively studied, yet there is much opportunity for improvement. The animal studies reported by Wrzesinski and colleagues in this issue of the JCI are a promising and timely step in this direction (see the related article beginning on page 492). The authors have evaluated both the effect of increasing the intensity of lymphodepletion and the influence of HSC transfer on the in vivo function of adoptively transferred CD8(+) T cells. We discuss their results in light of the evolving field and their implications for advancing cell-based immunotherapies for cancer.
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Affiliation(s)
- Claudio Anasetti
- H. Lee Moffitt Comprehensive Cancer Center, Tampa, Florida 33612, USA
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