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Título

A systematic approach for peptide characterization of B-cell receptor in chronic lymphocytic leukemia cells

AutorDíez, Paula; Ibarrola, Nieves ; Dégano, Rosa M.; Lécrevisse, Quentin; Rodríguez-Caballero, Arancha; Criado, Ignacio; Nieto, Wendy G.; Góngora, Rafael; González, Marcos ; Almeida, Julia ; Orfao, Alberto ; Fuentes, Manuel
Palabras clavePeptide sequencing
Mass spectrometry
Immunoglobulin
B-cell receptor
Chronic lymphocytic leukemia
Fecha de publicación2017
EditorImpact Journals
CitaciónOncotarget 8(26): 42836-42846 (2017)
ResumenA wide variety of immunoglobulins (Ig) is produced by the immune system thanks to different mechanisms (V(D)J recombination, somatic hypermutation, and antigen selection). The profiling of Ig sequences (at both DNA and peptide levels) are of great relevance to developing targeted vaccines or treatments for specific diseases or infections. Thus, genomics and proteomics techniques (such as Next- Generation Sequencing (NGS) and mass spectrometry (MS)) have notably increased the knowledge in Ig sequencing and serum Ig peptide profiling in a high-throughput manner. However, the peptide characterization of membrane-bound Ig (e.g., B-cell receptors, BCR) is still a challenge mainly due to the poor recovery of mentioned Ig. Herein, we have evaluated three different sample processing methods for peptide sequencing of BCR belonging to chronic lymphocytic leukemia (CLL) B cells identifying up to 426 different peptide sequences (MS/MS data are available via ProteomeXchange with identifier PXD004466). Moreover, as a consequence of the results here obtained, recommended guidelines have been described for BCR-sequencing of B-CLL samples by MS approaches. For this purpose, an in-house algorithm has been designed and developed to compare the MS/MS results with those obtained by molecular biology in order to integrate both proteomics and genomics results and establish the steps to follow when sequencing membrane-bound Ig by MS/MS.
Versión del editorhttps://doi.org/10.18632/oncotarget.17076
URIhttp://hdl.handle.net/10261/169229
Identificadoresdoi: 10.18632/oncotarget.17076
e-issn: 1949-2553
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