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Videos de Conceptos Relacionados

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
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Oligosaccharide Assembly01:24

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Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
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Antigen Presenting Cells01:22

Antigen Presenting Cells

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The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
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Protein Glycosylation01:25

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Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
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Author Spotlight: Dendritic Cells Maturation Using Sialidases-Based Enzymatic Treatment of the Cell Surface
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A algunos les gusta el dulce: las células dendríticas añaden azúcar a su sabor

A C Kohlgruber1, C I Wang2, S J Elledge3

  • 1Division of Genetics, Department of Medicine, Howard Hughes Medical Institute, Brigham and Women's Hospital, Boston, MA 02115, USA; Department of Genetics, Harvard University Medical School, Boston, MA 02115, USA.

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|November 13, 2020
PubMed
Resumen

Los investigadores desarrollaron FucoID, una nueva plataforma para etiquetar y capturar células T específicas. Esta tecnología ayuda a estudiar las respuestas inmunes antitumorales al aislar las células T específicas del tumor.

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Área de la Ciencia:

  • Inmunología
  • La bioquímica
  • Biología molecular

Sus antecedentes:

  • La identificación y aislamiento de células T específicas es crucial para comprender las respuestas inmunes, particularmente en el cáncer.
  • Los métodos actuales para el aislamiento de células T pueden ser desafiantes y pueden no capturar todas las poblaciones de células relevantes.

Objetivo del estudio:

  • Introducir FucoID, una nueva plataforma de etiquetado mediada por la glucosiltransferasa.
  • Demostrar la utilidad de FucoID para el etiquetado bioquímico y la captura de células T específicas de antígenos.
  • Caracterizar las células T específicas del tumor en modelos de cáncer preclínicos.

Principales métodos:

  • Desarrollo de FucoID, una plataforma que utiliza la actividad de la glucosiltransferasa para el etiquetado de células T.
  • Aplicación de FucoID para etiquetar y capturar células T específicas de antígenos.
  • Aislamiento y caracterización de las células T CD8+ y CD4+ de modelos de tumores murinos.

Principales resultados:

  • Etiquetado bioquímico exitoso y captura de células T específicas de antígenos utilizando FucoID.
  • Aislamiento y caracterización de las células T CD8+ y CD4+ específicas del tumor.
  • Demostración de la eficacia de FucoID en modelos de tumores en ratones preclínicos.

Conclusiones:

  • FucoID es una nueva herramienta poderosa para el aislamiento bioquímico y el estudio de células T específicas de antígenos.
  • Esta plataforma mejora la comprensión de las respuestas inmunes antitumorales.
  • FucoID muestra una promesa significativa para la investigación inmunológica y el desarrollo terapéutico.