0000000000385580
AUTHOR
Carlos García Ballesteros
Cryptochrome-1 expression: a new prognostic marker in B-cell chronic lymphocytic leukemia
Chronic lymphocytic leukemia is an adult-onset leukemia with a heterogeneous clinical behavior. When chronic lymphocytic leukemia cases were divided on the basis of IgVH mutational status, widely differing clinical courses were revealed. Since IgVH sequencing is difficult to perform in a routine diagnostic laboratory, finding a surrogate for IgVH mutational status seems an important priority. In the present study, we proposed the use of Cryptochrome- 1 as a new prognostic marker in early-stage chronic lymphocytic leukemia. Seventy patients (Binet stage A, without treatment) were included in the study. We correlated Cryptochrome-1 mRNA with well established prognostic markers such as IgVH mu…
BCL6: somatic mutations and expression in early-stage chronic lymphocytic leukemia
BCL6 somatic mutations affect normal and tumoral post germinal center B-lymphocytes. Our objective was to analyse expression, mutations and polymorphisms in the BCL6 gene and to correlate those variables with the clinical outcome in early-stage chronic lymphocytic leukemia (CLL). CLL samples were used for characterisation of the mutational status of BCL6/ immunoglobulin variable heavy chain (IGHV) genes, and expression of BCL6 was determined by real time PCR and immunoblot. Out of 68 cases, 29% show somatic mutations on BCL6 which occur exclusively in IGHV mutated cases. They are single nucleotide substitutions located mainly in two short mutational hot spots. CLL cells express different le…
Apoptosis linfocitaria según receptor TCR- αβ y TCR- γδ en sujetos sanos
Durante décadas, los LTγδ han generado cierto desconcierto debido a su preponderancia en los tejidos periféricos sobre la sangre periférica y a la presencia de fenotipos activados y de memoria mayoritariamente, así como por su capacidad para reconocer un amplio repertorio de antígenos, alguno de los cuales no requieren ser procesados por el MHC. Los LTγδ forman parte de un sistema inmunológico superpuesto entre la inmunidad innata y la adquirida. Estas células están en constante contacto con sustancias medioambientales, identificando posibles patógenos para presentarlos a otras células o eliminarlos (células T γδ activadas), memorizando su estructura antigénica para posteriores contactos (c…