Video Experimental Relacionado
Updated: Aug 3, 2026

09:07
Expression of Fluorescent Fusion Proteins in Murine Bone Marrow-derived Dendritic Cells and Macrophages
Published on: October 30, 2018
Asociación entre antígenos de trasplante y una proteína de membrana viral sintetizada a partir de un vector de
Cell
|June 1, 1983
Resumen
La proteína E19 del adenovirus forma complejos con antígenos de trasplante de clase I. Los investigadores crearon vectores de expresión para estudiar la proteína E19 de forma independiente, confirmando su asociación de membrana e interacción con los antígenos HLA.
Área de la Ciencia:
- Virología Virología.
- Inmunología Inmunología.
- Biología Molecular Biología Molecular
Sus antecedentes:
- Las células infectadas por adenovirus expresan complejos de la proteína viral E19 y antígenos de trasplante de clase I.
- Los cambios metabólicos en las células infectadas complican el estudio de las interacciones de la proteína E19.
Objetivo del estudio:
- Para investigar la función de la proteína E19 independientemente del contexto viral.
- Para determinar si la proteína E19 se asocia con antígenos de trasplante de clase I en células transfectadas.
Principales métodos:
- Vectores de expresión transitoria construidos con el gen E19, el promotor temprano SV40 y el gen beta-globulina de conejo.
- Células transfectadas de mono COS y células humanas HeLa con ADN vectorial.
- Se evaluó la producción y localización de la proteína E19 y se realizaron estudios de coprecipitación con anticuerpos anti-HLA y anti-beta 2-microglobulina.
Principales resultados:
- La expresión del gen E19 eficiente requería un intrón (segundo intrón beta-globina).
- La proteína E19 se procesó adecuadamente y se ancló en la membrana plasmática.
- Proteína E19 sintetizada por vectores asociada con antígenos de trasplante de clase I (HLA) en células humanas.
Conclusiones:
- La proteína E19 puede asociarse de forma independiente con antígenos de trasplante de clase I.
- Los vectores de expresión proporcionan una herramienta para estudiar la función de la proteína E19 sin interferencia metabólica viral.
- La interacción de la proteína E19 con los antígenos HLA es un aspecto clave de su papel en la infección por adenovirus.
Videos de Conceptos Relacionados
Humoral Immune Responses
Overview
Cross-reactivity
Overview
Vaccinations
Overview
Transcytosis of IgG
Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Development of Immunocompetence
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Immune Response Against Viral Pathogens
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

