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Updated: Jan 10, 2026

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Las moléculas de adhesión que controlan la migración de los linfocitos.
1Department of Pathology University of Michigan, Ann Arbor 48109-0602.
Cell
|March 24, 1989
Resumen
Dos familias de moléculas de adhesión, Hermes/CD44 y Mel-14, median las interacciones de las células linfoides con los vasos sanguíneos. El Mel-14 también es Mel-14.
Área de la Ciencia:
- Inmunología Inmunología.
- Biología celular Biología celular.
- Biología Molecular Biología Molecular
Sus antecedentes:
- Las células linfoides circulantes interactúan con la pared del vaso sanguíneo a través de moléculas de adhesión.
- Las familias de supergenes de integrinas e inmunoglobulinas son mediadores conocidos de esta interacción.
Objetivo del estudio:
- Caracterizar las familias estructurales de moléculas de adhesión recién identificadas.
- Para investigar su papel en la recirculación de los linfocitos y eventos de adhesión.
Principales métodos:
- Análisis estructural de las familias de moléculas de adhesión (Hermes/CD44, Mel-14).
- Comparaciones de homología de secuencias con estructuras de proteínas conocidas (proteínas de enlace de cartílago, lectinas, EGF, proteínas de unión del complemento).
Principales resultados:
- Identificó la familia Hermes/CD44 con homología a las proteínas de enlace del cartílago, implicadas en la fijación a los lechos vasculares.
- Caracterizó el receptor Mel-14 con lectina, EGF y dominios de proteínas de unión del complemento, apoyando las interacciones lectina-carbohidrato en la homing de linfocitos.
- Amplió esta familia estructural a ELAM-1 y GMP-140, implicándolos en la adhesión de leucocitos y plaquetas.
Conclusiones:
- Dos nuevas familias de moléculas de adhesión juegan un papel fundamental en las interacciones entre leucocitos y la pared de los vasos sanguíneos.
- Las interacciones lectina-carbohidrato son significativas en la recirculación de los linfocitos.
- Los hallazgos amplían la comprensión de los mecanismos de adhesión en el tráfico de células inmunes.
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