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Updated: Jun 1, 2026

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Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes
Published on: June 13, 2014
Una molécula de linfocito implicada en el homing de los ganglios linfáticos es un miembro de la familia de proteínas
I Stamenkovic1, M Amiot, J M Pesando
1Department of Pathology, Harvard Medical School, Massachusetts General Hospital, Boston 02114.
Cell
|March 24, 1989
Resumen
Los investigadores identificaron dos formas del antígeno CDw44, una forma linfoide y una forma epitelial, cruciales para la adhesión de los linfocitos. Este hallazgo aclara el CDw4444
Área de la Ciencia:
- Inmunología Inmunología.
- Biología Molecular Biología Molecular
- Biología celular Biología celular.
Sus antecedentes:
- La familia Hermes de anticuerpos monoclonales se dirige a una estructura linfocítica involucrada en la adhesión al endotelio.
- Se supone que esta estructura es el equivalente humano del receptor homing del ganglio linfático murino Mel-14.
- Estudios anteriores indicaron que los anticuerpos contra el antígeno Hermes, el antígeno Pgp-1 y el antígeno CDw44 reconocen la misma estructura.
Objetivo del estudio:
- Para aislar y caracterizar los clones de ADNc que codifican el antígeno CDw44.
- Para investigar los patrones de expresión de diferentes formas de CDw44.
- Para comparar la secuencia CDw44 con los receptores homing conocidos.
Principales métodos:
- Aislamiento y expresión de clones de ADNc que codifican CDw44 en células COS.
- Análisis de la expresión de CDw44 en células hematopoyéticas y tejidos epiteliales.
- Comparación de la secuencia de CDw44 con el antígeno Mel-14 y las proteínas de enlace del cartílago.
Principales resultados:
- Se identificaron dos formas distintas de CDw44: una forma linfoide y una forma epitelial.
- La forma linfoide se expresa en las células hematopoyéticas, mientras que la forma epitelial se encuentra en el epitelio y se expresa en gran medida en los carcinomas.
- CDw44 comparte homología con las proteínas de enlace de cartílago, pero no está estructuralmente relacionado con el antígeno Mel-14.
Conclusiones:
- CDw44 existe en al menos dos formas moleculares distintas con patrones de expresión diferenciales.
- La forma linfoide probablemente juega un papel en la localización y adhesión de los linfocitos.
- A pesar de las sugerencias iniciales, CDw44 no es el homólogo humano del receptor homing del ganglio linfático Mel-14.
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