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Intestinal icrobiota Transplant Prior to llogeneic tem Cell ransplant (MAST) trial: study protocol for a multicentre, double-blinded, placebo-controlled, phase IIa trial.
BMJ Open
December 2024
Centre for Haematology, Department of immunology and inflammation, Faculty of Medicine, Imperial College London, London, UK.
Introduction: Lower diversity of the gut microbiome prior to allogeneic haematopoietic cell transplantation (HCT) correlates with reduced survival after the intervention. Most patients undergoing HCT for a haematological malignancy have previously received intensive chemotherapy, resulting in prolonged neutropenic episodes requiring broad-spectrum antibiotics; use of these has been linked to reduced microbiome diversity. Intestinal microbiota transplant (IMT) is a novel treatment approach that restores this diversity.
View Article and Find Full Text PDFAdvancing therapeutic strategies for graft-versus-host disease by targeting gut microbiome dynamics in allogeneic hematopoietic stem cell transplantation: current evidence and future directions.
Mol Med
January 2025
Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, No. 8 Dianli Road, Zhenjiang, 212002, Jiangsu, People's Republic of China.
Hematopoietic stem cell transplantation (HSCT) is a highly effective therapy for malignant blood illnesses that pose a high risk, as well as diseases that are at risk due to other variables, such as genetics. However, the prevalence of graft-versus-host disease (GVHD) has impeded its widespread use. Ensuring the stability of microbial varieties and associated metabolites is crucial for supporting metabolic processes, preventing pathogen intrusion, and modulating the immune system.
View Article and Find Full Text PDFSTAT1 regulates immune-mediated intestinal stem cell proliferation and epithelial regeneration.
Nat Commun
January 2025
Department of Medicine and Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
The role of the immune system in regulating tissue stem cells remains poorly understood, as does the relationship between immune-mediated tissue damage and regeneration. Graft vs. host disease (GVHD) occurring after allogeneic bone marrow transplantation (allo-BMT) involves immune-mediated damage to the intestinal epithelium and its stem cell compartment.
View Article and Find Full Text PDF[Role of human herpesvirus infection in refractory gastrointestinal graft-versus-host-disease after hematopoietic stem cell transplantation and the diagnosis and treatment thereof].
Zhonghua Xue Ye Xue Za Zhi
November 2024
Department of Bone Marrow Transplantation, Hebei Yanda Lu Daopei Hospital, Langfang 065300, China.
This study aimed to investigate the role of human herpesvirus (HHV) infection in refractory intestinal graft-versus-host disease (GI-GVHD) after hematopoietic stem cell transplantation (HSCT) and its diagnosis and treatment. This study retrospectively analyzed patients presenting with refractory GI-GVHD after allogeneic HSCT (allo-HSCT) with concomitant colonoscopy and mucosal biopsy at Lu Daopei Hospital, Yanda, Hebei, from March 2022 to July 2024. Human herpesvirus 6 (HHV6), HHV7, cytomegalovirus (CMV), and Epstein-Barr virus (EBV) detection with the RQ-PCR method.
View Article and Find Full Text PDFCell therapy with human IL-10-producing ILC2s limits xenogeneic graft-versus-host disease by inhibiting pathogenic T cell responses.
Cell Rep
December 2024
Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Toronto General Hospital Research Institute, Ajmera Transplant Centre, University Health Network, Toronto, ON M5G 1L7, Canada. Electronic address:
Interleukin-10 (IL-10)-producing group 2 innate lymphoid cells (ILC2) regulate inflammatory immune responses, yet their therapeutic potential remains largely unexplored. Here, we demonstrate that cell therapy with human ILC2 inhibits pathogenic T cell responses in humanized mouse models of graft-versus-host disease (GVHD), resulting in reduced GVHD severity and improved overall survival without limiting the graft-versus-leukemia effect. ILC2 conferred superior protection from GVHD than IL-10 ILC2s, and blocking IL-10 and IL-4 abrogated ILC2 protective effects, indicating that these cytokines are important for the protective effects of ILC2.
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