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Sanguinarine Induces Apoptosis Pathway in Multiple Myeloma Cell Lines via Inhibition of the JaK2/STAT3 Signaling
In this study, we aimed to investigate the potential anti-proliferative and pro-apoptotic activities of SNG in a panel of MM cell lines (U266, IM9, MM1S, and RPMI-8226). SNG treatment of MM cells resulted in a dose-dependent decrease in cell viability through mitochondrial membrane potential loss and activation of caspase 3, 9, and cleavage of PARP. Pre-treatment of MM cells with a universal caspase inhibitor, Z-VAD-FMK, prevented SNG mediated loss of cell viability, apoptosis, and caspase activation, confirming that SNG-mediated apoptosis is caspase-dependent. The SNG-mediated apoptosis appears to be resulted from suppres...
Source: Frontiers in Oncology - April 16, 2019 Category: Cancer & Oncology Source Type: research

Aurora Kinase a/MDM2-Mediated SETD2 Loss of Function in Chronic Myeloid Leukemia Patients in Blast Crisis Induces Genetic Instability and Can be Therapeutically Targeted
In conclusion, phosphorylation by Aurora Kinase A and ubiquitination by MDM2 contribute to SETD2 non-genomic loss of function in advanced-phase CML. Loss of SETD2/H3K36me3 is associated with increased DNA damage and impaired HR repair. Restoring physiological H3K36me3 levels may help improve the outcome of this critical subset of pts.Acknowledgments: study supported by AIRC (project code 16996) and AIL (Associazione Italiana contro le Leucemia, Linfomi e Mieloma).Figure 1.DisclosuresCastagnetti: Incyte: Consultancy, Honoraria; Pfizer: Consultancy, Honoraria; Bristol Meyers Squibb: Consultancy, Honoraria; Novartis: Consulta...
Source: Blood - November 21, 2018 Category: Hematology Authors: Mancini, M., De Santis, S., Monaldi, C., Bavaro, L., Martelli, M., Castagnetti, F., Gugliotta, G., Rosti, G., Fontana, M. C., Dan, E., Sinigaglia, B., Iurlo, A., Orofino, N., Abruzzese, E., Salvucci, M., Pregno, P., Gozzini, A., Crugnola, M., Albano, F., Tags: 631. Chronic Myeloid Leukemia: Biology and Pathophysiology, excluding Therapy: Poster I Source Type: research

MDM2 and Aurora Kinase a Contribute to SETD2 Loss of Function in Advanced Systemic Mastocytosis: Implications for Pathogenesis and Treatment
The SETD2 gene encodes the only methyltransferase responsible for histone H3 lysine 36 trimethylation (H3K36Me3) in humans. H3K36me3 play a key role in preserving the fidelity of transcription elongation and splicing. In addition, SETD2/H3K36me3 have more recently been implicated in the maintenance of genomic integrity by regulating homologous recombination (HR) repair, Mismatch Repair (MMR) mitotic spindle assembly and chromosome segregation. SETD2 deletions and/or inactivating mutations occur in many solid tumors and have recently been found also in acute leukemias. We have reported that the HMC-1.1 and -1.2 mast cell le...
Source: Blood - November 21, 2018 Category: Hematology Authors: Mancini, M., Monaldi, C., De Santis, S., Papayannidis, C., Rondoni, M., Bavaro, L., Martelli, M., Maria Chiara, A., Curti, A., Ficarra, E., Paciello, G., Fontana, M. C., Zanotti, R., Bonifacio, M., Scaffidi, L., Pagano, L., Criscuolo, M., Albano, F., Cice Tags: 635. Myeloproliferative Syndromes: Basic Science: Poster I Source Type: research