Age-associated B cells predict impaired humoral immunity after COVID-19 vaccination in patients receiving immune checkpoint blockade

Age-associated B cells (ABC) accumulate with age and in individuals with different immunological disorders, including cancer patients treated with immune checkpoint blockade and those with inborn errors of immunity. Here, we investigate whether ABCs from different conditions are similar and how they impact the longitudinal level of the COVID-19 vaccine response. Single-cell RNA sequencing indicates that ABCs with distinct aetiologies have common transcriptional profiles and can be categorised according to their expression of immune genes, such as the autoimmune regulator (AIRE). Furthermore, higher baseline ABC frequency correlates with decreased levels of antigen-specific memory B cells and reduced neutralising capacity against SARS-CoV-2. ABCs express high levels of the inhibitory FcγRIIB receptor and are distinctive in their ability to bind immune complexes, which could contribute to diminish vaccine responses either directly, or indirectly via enhanced clearance of immune complexed-antigen. Expansion of ABCs may, therefore, serve as a biomarker identifying individuals at risk of suboptimal responses to vaccination

Balance de 25 años de jurisprudencia de la Corte Constitucional

La Corte Constitucional de Colombia ha tenido un importante impacto en la vida social, cultural y política del país, a tal punto que, desde su creación, la jurisprudencia de este tribunal se ha convertido en un referente mundial acerca de las diversas materias sobre las que se ha pronunciado . Este libro presenta un balance de la jurisprudencia que durante sus primeros veinticinco años la Corte ha expedido. Con este fin, el magistrado Luis Guillermo Guerrero Pérez y los magistrados auxiliares Miguel Polo Rosero y Claudia Escobar García recogen los trabajos de expertos nacionales e internacionales, funcionarios del Estado y Miembros de la sociedad civil que se presentaron en el XII Encuentro de la Jurisdicción Constitucional, realizado en la ciudad de San Juan de Pasto entre el 27 y el 30 de septiembre de 2017. En ese encuentro, se ratificó que la Corte Constitucional tiene la tarea de velar por la integridad de los compromisos de la Constitución. Los capítulos que conforman este libro ofrecen una mirada multidisciplinaria sobre la eficacia y el impacto de las decisiones de la Corte, específicamente en lo que tiene que ver con la democracia y la participación, el sistema de salud, el sistema pensional, el medio ambiente y el fenómeno discriminatorio con la relación al género y a la condición de discapacidad en Colombia.Bogot

Re-assembly: audiovisual peace laboratories

Iniciativa cultural para el desarrollo de laboratorios audiovisuales de creación colectiva para excombatientes, a partir de cuatro líneas principales: fotografía, montaje, guion y sonido. Re-ensamble es un proyecto que le apuesta al aprovechamiento del potencial artístico para la construcción de paz, la reconciliación y el restablecimiento del tejido social en la era del posacuerdo. A través de esta iniciativa buscamos la construcción de conocimiento colectivo que permita mejorar las vidas de los y las excombatientes gracias a su integración a las dinámicas creativas y productivas de la localidad. En este mismo sentido fomentamos estrategias de cooperación y reestablecimiento de la confianza en el otro que permitan mejorar la convivencia y los vínculos sociales.Cultural initiative for the development of audiovisual laboratories of collective creation for ex-combatants, based on four main lines: photography, montage, script and sound. Re-assemblage is a project that bets on harnessing the artistic potential for peace building, reconciliation and the reestablishment of the social fabric in the post-agreement era. Through this initiative we seek the construction of collective knowledge that allows the lives of former combatants to be improved thanks to their integration into the creative and productive dynamics of the locality. In this same sense, we promote strategies of cooperation and reestablishment of trust in the other to improve coexistence and social ties

Stability of gut microbiome after COVID-19 vaccination in healthy and immuno-compromised individuals.

Bidirectional interactions between the immune system and the gut microbiota are key contributors to various physiological functions. Immune-associated diseases such as cancer and autoimmunity, and efficacy of immunomodulatory therapies, have been linked to microbiome variation. Although COVID-19 infection has been shown to cause microbial dysbiosis, it remains understudied whether the inflammatory response associated with vaccination also impacts the microbiota. Here, we investigate the temporal impact of COVID-19 vaccination on the gut microbiome in healthy and immuno-compromised individuals; the latter included patients with primary immunodeficiency and cancer patients on immunomodulating therapies. We find that the gut microbiome remained remarkably stable post-vaccination irrespective of diverse immune status, vaccine response, and microbial composition spanned by the cohort. The stability is evident at all evaluated levels including diversity, phylum, species, and functional capacity. Our results indicate the resilience of the gut microbiome to host immune changes triggered by COVID-19 vaccination and suggest minimal, if any, impact on microbiome-mediated processes. These findings encourage vaccine acceptance, particularly when contrasted with the significant microbiome shifts observed during COVID-19 infection

Age-associated B cells predict impaired humoral immunity after COVID-19 vaccination in patients receiving immune checkpoint blockade

Acknowledgements: This work was funded by the UK Medical Research Council (project number MC_UU_00025/12), the Medical Research Foundation (MRF-057-0002-RG-THAV-C0798) and The Evelyn Trust (grant number 20/40) to J.E.D.T. N.J.M. was supported by the MRC (TSF ref. MR/T032413/1), NHSBT (grant ref. WPA15-02) and Addenbrooke’s Charitable Trust (grant ref. 900239). M.A.C. was supported by the Medical Research Council (project number MC_UU_00025/10). K.R.P. was supported by the Medical Research Council (project number MC_UU_00025/11). K.F. held an MRC studentship with support from the Cambridge European Trust and St. John’s College. K.W. has received funding by the Deutsche Forschungsgemeinschaft (WA 1597/6-1 and WA 1597/7-1). K.W. and B.K. received support by the German Federal Ministry of Education and Research (BMBF) through a grant to the German genetic multi-organ Auto-Immunity Network (GAIN), grant code 01GM2206A. F.H. is an ERC Advanced Investigator (695669). We thank Carola G. Vinuesa for helpful discussion. The authors also thank the Flow Cytometry Facilities at the MRC-Toxicology Unit, University of Cambridge; Katarzyna Kania from CRUK-CI-Genomics, Cambridge UK for advice on single cell RNA sequencing experiments; and Rosalind Kieran from the Department of Oncology, Cambridge University NHS Hospitals Foundation Trust, Cambridge UK, for contributions for patient recruitment and data collection.Age-associated B cells (ABC) accumulate with age and in individuals with different immunological disorders, including cancer patients treated with immune checkpoint blockade and those with inborn errors of immunity. Here, we investigate whether ABCs from different conditions are similar and how they impact the longitudinal level of the COVID-19 vaccine response. Single-cell RNA sequencing indicates that ABCs with distinct aetiologies have common transcriptional profiles and can be categorised according to their expression of immune genes, such as the autoimmune regulator (AIRE). Furthermore, higher baseline ABC frequency correlates with decreased levels of antigen-specific memory B cells and reduced neutralising capacity against SARS-CoV-2. ABCs express high levels of the inhibitory FcγRIIB receptor and are distinctive in their ability to bind immune complexes, which could contribute to diminish vaccine responses either directly, or indirectly via enhanced clearance of immune complexed-antigen. Expansion of ABCs may, therefore, serve as a biomarker identifying individuals at risk of suboptimal responses to vaccination

Age-associated B cells predict impaired humoral immunity after COVID-19 vaccination in patients receiving immune checkpoint blockade.

Age-associated B cells (ABC) accumulate with age and in individuals with different immunological disorders, including cancer patients treated with immune checkpoint blockade and those with inborn errors of immunity. Here, we investigate whether ABCs from different conditions are similar and how they impact the longitudinal level of the COVID-19 vaccine response. Single-cell RNA sequencing indicates that ABCs with distinct aetiologies have common transcriptional profiles and can be categorised according to their expression of immune genes, such as the autoimmune regulator (AIRE). Furthermore, higher baseline ABC frequency correlates with decreased levels of antigen-specific memory B cells and reduced neutralising capacity against SARS-CoV-2. ABCs express high levels of the inhibitory FcγRIIB receptor and are distinctive in their ability to bind immune complexes, which could contribute to diminish vaccine responses either directly, or indirectly via enhanced clearance of immune complexed-antigen. Expansion of ABCs may, therefore, serve as a biomarker identifying individuals at risk of suboptimal responses to vaccination

Age-associated B cells predict impaired humoral immunity after COVID-19 vaccination in patients receiving immune checkpoint blockade.

Age-associated B cells (ABC) accumulate with age and in individuals with different immunological disorders, including cancer patients treated with immune checkpoint blockade and those with inborn errors of immunity. Here, we investigate whether ABCs from different conditions are similar and how they impact the longitudinal level of the COVID-19 vaccine response. Single-cell RNA sequencing indicates that ABCs with distinct aetiologies have common transcriptional profiles and can be categorised according to their expression of immune genes, such as the autoimmune regulator (AIRE). Furthermore, higher baseline ABC frequency correlates with decreased levels of antigen-specific memory B cells and reduced neutralising capacity against SARS-CoV-2. ABCs express high levels of the inhibitory FcγRIIB receptor and are distinctive in their ability to bind immune complexes, which could contribute to diminish vaccine responses either directly, or indirectly via enhanced clearance of immune complexed-antigen. Expansion of ABCs may, therefore, serve as a biomarker identifying individuals at risk of suboptimal responses to vaccination.This work was funded by the UK Medical Research Council (project number MC_UU_00025/12), the Medical Research Foundation (MRF-057-0002-RG-THAV-C0798) and The Evelyn Trust (grant number 20/40) to JEDT. NJM was supported by the MRC (TSF ref. MR/T032413/1), NHSBT (grant ref. WPA15-02) and Addenbrooke’s Charitable Trust (grant ref. 900239). MAC was supported by the Medical Research Council (project number MC_UU_00025/10). KRP was supported by the Medical Research Council (project number MC_UU_00025/11). KF held an MRC studentship with support from the Cambridge European Trust and St. John’s College. KW has received funding by the Deutsche Forschungsgemeinschaft (WA 1597/6-1 and WA 1597/7-1). KW and BK received support by the German Federal Ministry of Education and Research (BMBF) through a grant to the German genetic multi-organ Auto-Immunity Network (GAIN), grant code 01GM2206A. FH is an ERC Advanced Investigator (695669). We thank Carola G. Vinuesa for helpful discussion. The authors also thank the Flow Cytometry Facilities at the MRC-Toxicology Unit, University of Cambridge; Katarzyna Kania from CRUK-CI-Genomics, Cambridge UK for advice on single cell RNA sequencing experiments; and Rosalind Kieran from the Department of Oncology, Cambridge University NHS Hospitals Foundation Trust, Cambridge UK, for contributions for patient recruitment and data collection