0000000000385583
AUTHOR
Eloisa Jantus Lewintre
Leucemia linfática crónica B: una enfermedad heterogénea. Estudio del rol de las mutaciones de IgVH y BCL-6 en esta heterogeneidad: aproximaciones genómica y funcional.
La leucemia linfática crónica B (LLC-B) presenta un comportamiento clínico variable. Los pacientes sin mutaciones en la región variable del gen de la cadena pesada de las inmunoglobulinas (IgVH) sufren una enfermedad agresiva con menor tiempo libre de progresión y supervivencia global que los pacientes con IgVH mutado. Además, las mutaciones en el gen BCL6 proveen información clínica valiosa, permitiendo identificar un subgrupo de pacientes con alto riesgo de progresión, a pesar de tener mutaciones en IgVH. Sin embargo, el conocimiento de la biología subyacente en estos subgrupos moleculares de LLC-B aún no ha sido completamente dilucidado. El objetivo de este trabajo es el de valorar la im…
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…
Treatment of B-CLL Cells with Bortezomib and Rituximab Reduces Cell Viability In Vitro..
Introduction : In B-CLL, somatic mutation of IgVH genes defines a group of patients with favorable prognosis, whereas the absence of IgVH mutations is correlated with a worse outcome. Our previous data suggested that BCL-6 mutations identify a subgroup of patients with high risk of progression despite the presence of mutated IgVH gene, but the clinical significance of this molecular alteration remains uncertain. New approaches are now being tested for the treatment of B-CLL. Proteasome inhibitor, Bortezomib (Btz), and monoclonal antibodies specific for surface antigens, Rituximab (Rtx), represent potential therapeutic strategy. Objetives : To study the effects of Btz and Rtx on viability of…
Exosomes in semen: opportunities as a new tool in prostate cancer diagnosis
Abstract: Prostate cancer (PCa) is the most common cancer in men. Nowadays, it is diagnosed through the test of serum prostate-specific antigen (PSA) and rectal examination; however, there is still debate about the PSA-based diagnosis. Seminal fluid (SF), contains a high concentration of subcellular lipid-bound microparticles, traditionally termed "prostasomes", that are extracellular vesicles (EVs) released into the extracellular space by prostate gland's epithelial cells. These vesicles, first described in 1982 promote motility of sperm cells, regulation of sperm cell capacitation, acrosome reaction and immune suppression within the female reproductive tract. It was demonstrated that pros…
Analysis of chronic lymphotic leukemia transcriptomic profile: differences between molecular subgroups
B cell chronic lymphocytic leukemia (CLL) is a lymphoproliferative disorder with a variable clinical course. Patients with unmutated IgV(H) gene show a shorter progression-free and overall survival than patients with immunoglobulin heavy chain variable regions (IgV(H)) gene mutated. In addition, BCL6 mutations identify a subgroup of patients with high risk of progression. Gene expression was analysed in 36 early-stage patients using high-density microarrays. Around 150 genes differentially expressed were found according to IgV(H) mutations, whereas no difference was found according to BCL6 mutations. Functional profiling methods allowed us to distinguish KEGG and gene ontology terms showing…