Publications by authors named "Magdalene Joseph"

Article Synopsis
  • This research investigates whether the emergence of specific T and B cells in response to COVID-19 disrupts the overall diversity of the immune system's cell receptor repertoire.
  • A genomic analysis of 95 individuals revealed that while there were expected increases in certain immune response sequences during SARS-CoV-2 infection, no significant issues were found in younger individuals.
  • However, older patients (over 50) showed a concerning reduction in T cell diversity, which may increase their risk for severe COVID-19 and complicate responses to emerging variants.
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Murine tissues harbor signature γδ T cell compartments with profound yet differential impacts on carcinogenesis. Conversely, human tissue-resident γδ cells are less well defined. In the present study, we show that human lung tissues harbor a resident Vδ1 γδ T cell population.

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Introduction: For patients with cancer, immune checkpoint inhibitors (ICIs) produce superior long-term responses compared with alternative treatments, although at the cost of manifesting adverse immune-related events. There are many hypotheses of the impacts of physical activities in immunotherapy, but little is known about the oncological outcomes and the underlying mechanisms. This scoping review aims to identify possible physical activity interventions, their efficacy and feasibility and the potential underlying biological mechanisms responsible for their effects.

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Background: The efficacy and safety profiles of vaccines against SARS-CoV-2 in patients with cancer is unknown. We aimed to assess the safety and immunogenicity of the BNT162b2 (Pfizer-BioNTech) vaccine in patients with cancer.

Methods: For this prospective observational study, we recruited patients with cancer and healthy controls (mostly health-care workers) from three London hospitals between Dec 8, 2020, and Feb 18, 2021.

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Article Synopsis
  • The interaction between the SARS-CoV-2 Spike protein's receptor binding domain (RBD) and the ACE2 receptor on host cells is crucial for the virus to enter cells and is a major target for neutralizing antibodies.
  • Researchers have identified over 100 monoclonal antibodies from infected individuals that target epitopes on RBD, the N-terminal domain (NTD), and the S2 subunits of the Spike protein, with about 45% showing neutralizing ability.
  • Mutations in the Spike protein, particularly in the B.1.1.7 variant, can lead to resistance against NTD-specific neutralizing antibodies, highlighting the importance of considering these subdominant epitopes in studying viral variants.
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The interaction of the SARS-CoV-2 Spike receptor binding domain (RBD) with the ACE2 receptor on host cells is essential for viral entry. RBD is the dominant target for neutralizing antibodies and several neutralizing epitopes on RBD have been molecularly characterized. Analysis of circulating SARS-CoV-2 variants has revealed mutations arising in the RBD, the N-terminal domain (NTD) and S2 subunits of Spike.

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Background/aim: High-dose chemotherapy (HDCT) and stem cell transplantation (SCT) have been established as the standard of care in patients with relapsed germ cell tumours (GCTs). We evaluated the safety, efficacy and tolerability of HDCT/ SCT in patients with relapsed GCTs.

Patients And Methods: Twenty-eight patients with relapsed GCTs, treated with HDCT, were included in this study.

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Background: Bladder cancer (BC) is the 9th most common cancer worldwide, but little progress has been made in improving patient outcomes over the last 25 years. The King's Health Partners (KHP) BC biobank was established to study unanswered, clinically relevant BC research questions. Donors are recruited from the Urology or Oncology departments of Guy's Hospital (UK) and can be approached for consent at any point during their treatment pathway.

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Improved understanding and management of COVID-19, a potentially life-threatening disease, could greatly reduce the threat posed by its etiologic agent, SARS-CoV-2. Toward this end, we have identified a core peripheral blood immune signature across 63 hospital-treated patients with COVID-19 who were otherwise highly heterogeneous. The signature includes discrete changes in B and myelomonocytic cell composition, profoundly altered T cell phenotypes, selective cytokine/chemokine upregulation and SARS-CoV-2-specific antibodies.

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Immunosurveillance, which describes the immunologically mediated elimination of transformed cells, has been widely accepted in the context of bladder cancer for many decades with the successful use of Bacillus-Calmette Guerin for superficial bladder cancer since the 1970s. With the emergence of checkpoint inhibitor blockade in the treatment of urothelial cancers, there has been a resurgent interest in the immunology of bladder cancer. The theory of cancer immunoediting proposes that the immune system has both pro-tumorigenic and anti-tumor effects, the balance between the two determining the progression of an individual tumor.

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