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https://www.readbyqxmd.com/read/29039493/actein-induces-apoptosis-in-leukemia-cells-through-suppressing-rhoa-rock1-signaling-pathway
#1
Wen-Di Zhou, Xiang Wang, Xing-Zhen Sun, Jian Hu, Rong-Rong Zhang, Ze Hong
Actein is a tetracyclic triterpenoid compound, extracted from the rhizome of Cimicifuga foetida, exhibiting anticancer activities as previously reported. However, the effects of actein on human leukemia have not been explored before. In this study, the role of actein in regulating apoptosis induction in human leukemia cells was investigated. Actein administration significantly enhanced apoptosis, especially in human leukemia cell line of U937 and the primary human leukemia cells. The promotion was accompanied by caspase-9, caspase-3 and poly(ADP-ribose) polymerase (PARP) cleavage, and cytochrome c (Cyto-c) release...
October 10, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29038338/infectious-complications-of-cd19-targeted-chimeric-antigen-receptor-modified-t-cell-immunotherapy
#2
Joshua A Hill, Daniel Li, Kevin A Hay, Margaret L Green, Sindhu Cherian, Xueyan Chen, Stanley R Riddell, David G Maloney, Michael Boeckh, Cameron J Turtle
Lymphodepletion chemotherapy with CD19-targeted chimeric antigen receptor-modified T (CAR-T) cell immunotherapy is a novel treatment for refractory or relapsed B cell malignancies. However, infectious complications of this approach have not been systematically studied. We evaluated infection events occurring between days 0-28 and 29-90 in 133 patients treated with CD19 CAR-T cells in a phase 1/2 study (https://clinicaltrials.gov/ct2/show/NCT01865617). We used multivariable Poisson and Cox regression to evaluate pre- and post-treatment risk factors for infection, respectively...
October 16, 2017: Blood
https://www.readbyqxmd.com/read/29034706/chronic-lymphocytic-leukaemia-and-secondary-skin-malignancies
#3
Geraldine Kyle
Chronic lymphocytic leukaemia (CLL) is a non-Hodgkin lymphoma commonly occurring in older adults. Many people with CLL can go for years without requiring treatment. However, they have an increased risk of secondary cancers, specifically melanoma and non-melanoma skin cancers. Furthermore, these secondary cancers are frequently more aggressive in this cohort of patients. Health professionals working in haematology, dermatology and general practice have an opportunity to educate patients about risk factors and measures to aid prevention...
October 12, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29032719/improved-survival-outcomes-with-the-addition-of-rituximab-to-initial-therapy-for-chronic-lymphocytic-leukemia-a-comparative-effectiveness-analysis-in-the-province-of-british-columbia-canada
#4
Lauren J Lee, Cynthia L Toze, Steven J T Huang, Tanya L Gillan, Joseph M Connors, Laurie H Sehn, Helene Bruyere, Heather Leitch, Khaled M Ramadan, Alina S Gerrie
Chemoimmunotherapy with rituximab improves survival in clinical trials in upfront chronic lymphocytic leukemia (CLL) treatment. This study compared clinical outcomes with and without rituximab added to first-line chemotherapy in a provincial cohort of CLL patients. Between 1973 and 2014, 1345 patients received CLL treatment: 48% with rituximab, 52% chemotherapy alone. Median overall survival (OS) and treatment-free survival (TFS) were significantly longer with rituximab: OS 8.9 vs. 6.2 years, p < .0001; TFS 3...
October 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29032274/assessment-of-impact-of-human-leukocyte-antigen-hla-type-on-outcomes-of-allogeneic-hematopoietic-stem-cell-transplant-for-chronic-lymphocytic-leukemia-cll
#5
Brian T Hill, Kwang Woo Ahn, Zhen-Huan Hu, Mahmoud Aljurf, Amer Beitinjaneh, Jean-Yves Cahn, Jan Cerny, Mohamed A Kharfan-Dabaja, Siddhartha Ganguly, Nilanjan Ghosh, Michael R Grunwald, Yoshihiro Inamoto, Tamila Kindwall-Keller, Taiga Nishihori, Richard F Olsson, Ayman Saad, Matthew Seftel, Sachiko Seo, Jeffrey Szer, Martin Tallman, Celalettin Ustun, Peter H Wiernik, Richard T Maziarz, Matt Kalaycio, Edwin Alyea, Uday Popat, Ronald Sobecks, Wael Saber
Chronic lymphocytic leukemia (CLL) is a common hematologic malignancy with many highly effective therapies. Chemorefractory disease, often characterized by deletion of chromosome 17p, has historically been associated with very poor outcomes, leading to the application of allogeneic hematopoietic stem cell transplant (allo-HCT) for medically fit patients. Although the use of allo-HCT has reduced since the introduction of novel targeted therapy for the treatment of CLL, there remains significant interest in understanding factors that may influence the efficacy of allo-HCT as it represents the only known curative treatment for CLL...
October 12, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29029465/alterations-in-dna-methylation-demethylation-intermediates-predict-clinical-outcome-in-chronic-lymphocytic-leukemia
#6
Cristina Bagacean, Adrian Tempescul, Christelle Le Dantec, Anne Bordron, Audrey Mohr, Hussam Saad, Valerie Olivier, Mihnea Zdrenghea, Victor Cristea, Pierre-François Cartron, Nathalie Douet-Guilbert, Christian Berthou, Yves Renaudineau
Cytosine derivative dysregulations represent important epigenetic modifications whose impact on the clinical outcome in chronic lymphocytic leukemia (CLL) is incompletely understood. Hence, global levels of 5-methylcytosine (5-mCyt), 5-hydroxymethylcytosine (5-hmCyt), 5-carboxylcytosine (5-CaCyt) and 5-hydroxymethyluracil were tested in purified B cells from CLL patients (n = 55) and controls (n = 17). The DNA methylation 'writers' (DNA methyltransferases [DNMT1/3A/3B]), 'readers' (methyl-CpG-binding domain [MBD2/4]), 'editors' (ten-eleven translocation [TET1/2/3]) and 'modulators' (SAT1) were also evaluated...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29025288/-state-of-the-art-molecular-diagnostics-and-therapy-of-chronic-lymphocytic-leukaemia-in-the-era-of-new-targeted-therapies
#7
Tímea Gurbity Pálfi, Viktória Fésüs, Csaba Bödör, Zita Borbényi
Chronic lymphoid leukaemia (CLL) has a heterogeneous clinical course depending on many clinical and molecular prognostic markers, which play an important role in the selection of the best treatment option. So far, TP53 disruption is the key prognostic and predictive factor assisting treatment decisions, especially in the era of novel therapies. Asymptomatic patients in early stages of the disease will still benefit from watchful waiting. In the frontline setting, chemoimmunotherapy is still the standard care in the majority of standard risk CLL patients...
October 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/29024518/cd5-b-lymphoproliferative-disorder-with-subsequent-development-of-plasma-cell-leukaemia-diagnostic-and-aetiologic-reasoning
#8
Evdoxia Gounari, Georgia Kaiafa, Triantafyllia Koletsa, Vasiliki Tsavdaridou, Ioannis Kostopoulos, Lilian Toptsi, Lemonia Skoura
BACKGROUND: Plasma cell myeloma (PCM) has been sporadically reported to occur simultaneously or subsequently to mature B lymphoproliferative disorders (LPDs), predominantly chronic lymphocytic leukaemia (CLL). METHODS: We describe the clinical and laboratory findings of a 69-year-old male patient who developed plasma cell leukaemia (PCL) 8 years after an initial diagnosis of a low stage CD5+ B LPD and 3 years after treatment for LPD. RESULTS: The transition from a clinically indolent B LPD to an aggressive PCM was documented by bone marrow (BM) biopsy, while flow cytometric (FC) immunophenotyping conferred additional information by disclosing the co-existence of both disorders in BM and the presence of abnormal monotypic PCs in peripheral blood above PCL levels...
October 10, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29024486/development-of-locus-specific-sub-clone-separation-by-fluorescence-in-situ-hybridization-in-suspension-in-chronic-lymphocytic-leukemia
#9
Cuc H Do, Sheree Bailey, Cindy Macardle, Lauren A Thurgood, Karen M Lower, Bryone J Kuss
Intra-tumor genetic heterogeneity is a hallmark of cancer. The ability to monitor and analyze these sub-clonal cell populations can be considered key to successful treatment, particularly in the modern era of targeted therapies. Although advances in sequencing technologies have significantly improved our ability to analyze the mutational landscape of tumors, this utility is reduced when considering small, but clinically significant sub-clones, that is, those representing <10% of the tumor burden. We have developed a high-throughput method that utilizes a 17-probe labeled bacterial artificial chromosome contig to quantify sub-clonal populations of cells based on deletion of a single locus...
October 11, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28994094/novel-prognostic-molecular-factors-a-quantum-leap-in-the-field-of-chronic-lymphocytic-leukemia
#10
Ewelina Zakrzewska, Marta Pirog, Joanna Purkot, Krzysztof Giannopoulos
Cytogenetic lesions do not completely explain clinical heterogeneity of chronic lymphocytic leukemia (CLL). The 2016 revision of the World Health Organization classification 2008 introduced that molecular lesions of TP53, NOTCH1, SF3B1 and BIRC3 have potential clinical relevance and could be integrated into an updated risk profile. The negative clinical implications of TP53 disruptions are well constituted and patients with these mutations should be considered for novel, small molecule signal transduction inhibitors therapies...
October 10, 2017: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/28993409/malt1-inhibition-is-efficacious-in-both-na%C3%A3-ve-and-ibrutinib-resistant-chronic-lymphocytic-leukemia
#11
Nakhle S Saba, Deanna H Wong, Georges Tanios, Jessica R Iyer, Patricia Lobelle-Rich, Eman L Dadashian, Delong Liu, Lorena Fontan, Erik K Flemington, Cydney M Nichols, Chingiz Underbayev, Hana Safah, Ari Melnick, Adrian Wiestner, Sarah E M Herman
The clinical efficacy displayed by ibrutinib in chronic lymphocytic leukemia (CLL) has been challenged by the frequent emergence of resistant clones. The ibrutinib target, Bruton's tyrosine kinase (BTK), is essential for B cell receptor signaling, and most resistant cases carry mutations in BTK or PLCG2, a downstream effector target of BTK. Recent findings show that MI-2, a small molecule inhibitor of the para-caspase MALT1, is effective in preclinical models of another type of BCR pathway-dependent lymphoma...
October 9, 2017: Cancer Research
https://www.readbyqxmd.com/read/28992620/potential-ameliorative-effects-of-qing-ye-dan-against-cadmium-induced-prostatic-deficits-via-regulating-nrf-2-ho-1-and-tgf-%C3%AE-1-smad-pathways
#12
Lifen Du, Yongfang Lei, Jinglou Chen, Hongping Song, Xinying Wu
BACKGROUND/AIMS: Cadmium (Cd) is an environmental pollutant with reproductive toxicity. Swertia mileensis is used in Chinese medicine for the treatment of prostatic deficits and named as Qing Ye Dan (QYD). This study was undertaken to investigate the potential protective effects of QYD against Cd-induced prostatic deficits. METHOD: Rat model of prostatic deficits was induced by 0.2 mg/kg/d CdCl2 subcutaneous injection for 15 days. The prostatic oxidative stress was evaluated by detecting the levels of malondialdehyde, nitric oxide, reduced/ oxidized glutathione, total sulfhydryl groups and enzymatic antioxidant status...
October 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28989655/precision-spherical-nucleic-acids-for-delivery-of-anticancer-drugs
#13
Danny Bousmail, Lilian Amrein, Johans J Fakhoury, Hassan H Fakih, John C C Hsu, Lawrence Panasci, Hanadi F Sleiman
We report a spherical nucleic acid (SNA) system for the delivery of BKM120, an anticancer drug for treatment of chronic lymphocytic leukemia (CLL). While promising for cancer treatment, this drug crosses the blood-brain barrier causing significant side-effects in patients. The DNA nanoparticle encapsulates BKM120 in high efficiency, and is unparalleled in its monodispersity, ease of synthesis and stability in different biological media and in serum. These DNA nanostructures demonstrate efficient uptake in human cervical cancer (HeLa) cells, and increased internalization of cargo...
September 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28989588/cytogenetic-abnormalities-with-interphase-fish-method-and-clinical-manifestation-in-chronic-lymphocytic-leukemia-patients-in-north-east-of-iran
#14
Hossein Rahimi, Mohammad Hadi Sadeghian, Mohammad Reza Keramati, Amir Hossein Jafarian, Sepideh Shakeri, Seyyede Fatemeh Shams, Neda Motamedi, Maryam Sheikhi, Hossein Ayatollahi
Background: Chronic lymphocytic leukemia (CLL) is one of the most prevalent adult leukemias. This malignancy is known by lymphocytosis for a duration of more than 3 months. In fact, it is a heterogeneous clinical disease with changeable progression. Chromosomal aberrations are significant parameters to predict result and survival rate and find treatment strategies for each patient. Cytogenetic methods are known as sensitive and relatively new procedures to detect abnormalities in genome. Materials and Methods: In order to identify CLL-related chromosomal abnormalities, 48 CLL patients included 38 Men and 10 Women with mean age of 58...
July 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28984869/bcl2-and-mir-15-16-from-gene-discovery-to-treatment
#15
REVIEW
Yuri Pekarsky, Veronica Balatti, Carlo M Croce
In 1984, we investigated the t(14;18) chromosomal translocations that frequently occur in patients with follicular lymphoma. We first identified a locus on chromosome 18 involved in these translocations with the chromosome 14 containing the immunoglobulin heavy chain locus. Within this region on chromosome 18, we then discovered a gene that we called BCL2, which was activated by the translocations. Since that time, many studies determined that BCL2 is one of the most important oncogenes involved in cancer by inhibiting apoptosis...
October 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28978838/chronic-lymphocytic-leukemia-biology-disease-progression-and-current-treatment-strategies
#16
Takahiro Yano
Chronic lymphocytic leukemia (CLL) is characterized by clonal proliferation and accumulation of mature CD5-positive, CD10-negative, CD20 weakly positive, and CD23-positive B-cells within blood, bone marrow, lymph nodes, and spleen. In proliferation centers, the survival and growth of CLL cells requires a permissive microenvironment comprising T-cells, macrophages, and stromal cells. FISH analysis has revealed that almost 80% of CLL cases carry chromosomal abnormalities including the most frequent del (13q14) and the strongest poor prognostic factor del (17p), both related to TP53 mutations...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28972595/ibrutinib-modulates-the-immunosuppressive-cll-microenvironment-through-stat3-mediated-suppression-of-regulatory-b-cell-function-and-inhibition-of-the-pd-1-pd-l1-pathway
#17
K Kondo, H Shaim, P A Thompson, J A Burger, M Keating, Z Estrov, D Harris, E Kim, A Ferrajoli, M Daher, R Basar, M Muftuoglu, N Imahashi, A Alsuliman, C Sobieski, E Gokdemir, W Wierda, N Jain, E Liu, E J Shpall, K Rezvani
Ibrutinib, a covalent inhibitor of Bruton Tyrosine Kinase (BTK), is approved for treatment of patients with relapsed/refractory or treatment-naïve CLL. Besides directly inhibiting BTK, ibrutinib possesses immunomodulatory properties through targeting multiple signaling pathways. Understanding how this ancillary property of ibrutinib modifies the CLL microenvironment is crucial for further exploration of immune responses in this disease and devising future combination therapies. Here, we investigated the mechanisms underlying the immunomodulatory properties of ibrutinib...
October 3, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28972490/phagocytosis-and-expression-of-fcg-receptors-and-cd180-on-monocytes-in-chronic-lymphocytic-leukemia
#18
T Tsertsvadze, N Mitskevich, A Bilanishvili, D Girdaladze, N Porakishvili
Chronic lymphocytic leukaemia (CLL) is a lymphoproliferative disease characterised by accumulation of monoclonal CD19+CD5+CD23+ lymphocytes in the peripheral blood and bone marrow. CLL is the most common type of the adult leukemia in the Western world. The disease is incurable, albeit there are new molecular and immunotherapy methods currently available in conjunction with chemotherapy, leading to the "precision therapy". The majority of immunotherapeutic approaches are based on the ability of therapeutic antibodies (Rituximab, Alemtuzumab) to mobilize anti-tumour potential of the Natural Killer cells and macrophages/monocytes through their Fcg-receptors (FcγR)...
September 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28972395/venetoclax-for-the-treatment-of-chronic-lymphocytic-leukemia
#19
Massimo Gentile, Annamaria Petrungaro, Giuseppina Uccello, Ernesto Vigna, Anna Grazia Recchia, Nadia Caruso, Sabrina Bossio, Laura De Stefano, Angela Palummo, Francesca Storino, Massimo Martino, Fortunato Morabito
Venetoclax, an orally bioavailable inhibitor of BCL-2, was approved in 2016 by the United States Food and Drug Administration (FDA) for the treatment of chronic lymphocytic leukemia (CLL) patients with 17p deletion [del(17p)], who have received at least one prior therapy. Areas covered: We focus on the mechanism of action of venetoclax and on the clinical trial data that led to the approval of venetoclax for CLL patients. We also review the studies in which this drug has being explored in combination with other anti-CLL drugs...
November 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28970470/nfat2-is-a-critical-regulator-of-the-anergic-phenotype-in-chronic-lymphocytic-leukaemia
#20
Melanie Märklin, Jonas S Heitmann, Alexander R Fuchs, Felicia M Truckenmüller, Michael Gutknecht, Stefanie Bugl, Sebastian J Saur, Juliane Lazarus, Ursula Kohlhofer, Leticia Quintanilla-Martinez, Hans-Georg Rammensee, Helmut R Salih, Hans-Georg Kopp, Michael Haap, Andreas Kirschniak, Lothar Kanz, Anjana Rao, Stefan Wirths, Martin R Müller
Chronic lymphocytic leukaemia (CLL) is a clonal disorder of mature B cells. Most patients are characterised by an indolent disease course and an anergic phenotype of their leukaemia cells, which refers to a state of unresponsiveness to B cell receptor stimulation. Up to 10% of CLL patients transform from an indolent subtype to an aggressive form of B cell lymphoma over time (Richter´s syndrome) and show a significantly worse treatment outcome. Here we show that B cell-specific ablation of Nfat2 leads to the loss of the anergic phenotype culminating in a significantly compromised life expectancy and transformation to aggressive disease...
October 2, 2017: Nature Communications
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