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Uso compartido del receptor V beta de células T humanas a las regiones inmunodominantes de la proteína básica de
K W Wucherpfennig1, K Ota, N Endo
1Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115.
Science (New York, N.Y.)
|May 25, 1990
Resumen
Los investigadores encontraron el uso compartido del gen beta V del receptor de células T (TCR) en pacientes con esclerosis múltiple (EM) que reconocen la proteína básica de mielina (MBP). Este descubrimiento podría conducir a nuevas inmunoterapias dirigidas a estructuras específicas de TCR para el tratamiento de la EM.
Área de la Ciencia:
- Inmunología Inmunología.
- La neurociencia es la neurociencia.
- Enfermedades autoinmunes Las enfermedades autoinmunes.
Sus antecedentes:
- La esclerosis múltiple (EM) es una enfermedad potencial autoinmune que involucra a las células T que se dirigen a las proteínas de mielina.
- La proteína básica de mielina (MBP) es un autoantígeno sospechoso en la EM, con células T reactivas a MBP activadas que se encuentran en pacientes.
- El uso de la cadena beta variable (V) del receptor de células T (TCR) es crucial para el reconocimiento de antígenos.
Objetivo del estudio:
- Investigar el uso del gen beta V del receptor de células T (TCR) en líneas de células T reactivas a regiones inmunodominantes de la proteína básica de mielina humana (MBP).
- Para determinar si existe un uso compartido del gen beta TCR V entre individuos que reconocen epítopos específicos de MBP.
Principales métodos:
- Análisis de 83 líneas de células T de pacientes con EM y sujetos sanos.
- Examen de líneas de células T reactivas a dos regiones inmunodominantes del MBP humano: los residuos 84-102 y 143-168.8.
- Evaluación de la variable de la cadena beta (V) del receptor de células T (TCR) beta. expresión génica.
Principales resultados:
- El uso frecuente de los genes V beta 17 y V beta 12 se observó en las líneas de células T que reconocen la región MBP (84-102) en los individuos.
- El uso de V beta 17 fue notablemente infrecuente en las líneas de células T reactivas a la segunda región inmunodominante MBP (143-168).
- Demostrado uso compartido del gen beta TCR V para el reconocimiento de regiones inmunodominantes específicas del autoantígeno humano MBP.
Conclusiones:
- Existen patrones de uso del gen beta V del receptor de células T compartidas (TCR) para el reconocimiento de regiones inmunodominantes de la proteína básica de mielina (MBP).
- Estas estructuras específicas de TCR representan objetivos potenciales para el desarrollo de inmunoterapias dirigidas para la esclerosis múltiple (EM).
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