Microtubule network and microtubule-associated proteins in leukemic T lymphocytes.
Leukemia
; 7(1): 51-7, 1993 Jan.
Article
en En
| MEDLINE
| ID: mdl-8418379
Cytoskeletal changes have been known to occur in cell transformation. Vinca alkaloids which bind to the tubulin dimer and inhibit microtubule (MT) assembly as well as disrupting the MT network and mitotic spindle, have been used as cancer chemotherapeutic agents. It has been proposed that apart from their anti-mitotic activity, these drugs act on the peripheral MT of malignant cells to produce their cytolytic effects. In this paper we demonstrate the presence of an altered cytoplasmic MT network in MOLT-4 and HuT-78 leukemic cells (human T-cell leukemic lines) compared to normal human peripheral blood lymphocytes stimulated with mitogens. In addition, using a selective extraction protocol we have compared microtubule-associated proteins (MAPs) profiles of G1/S synchronized leukemic human T-cells and 20 h mitogen-stimulated human peripheral blood T-cells. We observed a dramatic decrease in the expression of a MAP of apparent molecular weight 52 kDa and pI 5.2 in the leukemic cells synchronized at the G1/S border of the cell cycle. These results suggest that altered MT network morphology and MAP synthesis may be components of the malignant phenotype in the T-lymphocytic leukemias studied here.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Linfocitos T
/
Leucemia de Células T
/
Ciclo Celular
/
Proteínas Asociadas a Microtúbulos
/
Microtúbulos
Tipo de estudio:
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Leukemia
Asunto de la revista:
HEMATOLOGIA
/
NEOPLASIAS
Año:
1993
Tipo del documento:
Article
Pais de publicación:
Reino Unido