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Panobinostat

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https://www.readbyqxmd.com/read/28516379/panobinostat-enhances-growth-suppressive-effects-of-progestin-on-endometrial-carcinoma-by-increasing-progesterone-receptor-and-mitogen-inducible-gene-6
#1
Hirofumi Ando, Tsutomu Miyamoto, Hiroyasu Kashima, Shotaro Higuchi, Koichi Ida, David Hamisi Mvunta, Tanri Shiozawa
Although progestin has been used to treat endometrial hyperplasia and endometrial carcinoma (EC), its therapeutic efficacy is limited. In order to improve this, the underlining mechanisms of the effects of progestin need to be elucidated in more detail. In the present study, we examined the involvement of mitogen-inducible gene-6 (MIG6), a negative regulator of the EGF receptor, in the progestin-mediated growth suppression of endometrial epithelia. The immunohistochemical expression of MIG6 was elevated in the early to mid-secretory phases of normal endometrium and also with endometrial hyperplasia after medroxyprogesterone acetate (MPA) therapy...
May 17, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/28507307/a-novel-indication-for-panobinostat-as-a-senolytic-drug-in-nsclc-and-hnscc
#2
Leleesha Samaraweera, Alfred Adomako, Alicia Rodriguez-Gabin, Hayley M McDaid
Panobinostat (pano) is an FDA-approved histone deacetylase inhibitor. There is interest in evaluating alternate dosing schedules and novel combinations of pano for the treatment of upper aerodigestive and lung malignancies; thus we evaluated it in combination with Taxol, a chemotherapeutic with activity in both diseases. Dose-dependent synergy was observed in Non-Small Cell Lung Cancer (NSCLC) and Head and Neck Squamous Cell Carcinoma (HNSCC) cell lines and was due to senescence rather than potentiation of cell death...
May 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28505595/epigenetic-drug-combination-induces-remission-in-mouse-xenograft-models-of-pediatric-acute-myeloid-leukemia
#3
Anilkumar Gopalakrishnapillai, E Anders Kolb, Suzanne M McCahan, Sonali P Barwe
Aberrations in epigenetic modifications contribute to leukemogenesis in childhood acute myeloid leukemia (AML). We combined DNA hypomethylating agent azacitidine with histone deacetylase inhibitor panobinostat in preclinical models of childhood AML. Synergistic cytotoxic effect upon treatment with azacitidine and panobinostat with combination indices <1.0 was observed. Azacitidine and panobinostat increased median survival by 26 and 6days respectively in MV4;11 xenografted mice. Mice treated with both drugs showed a drastic reduction in leukemic burden leading to complete remission sustained for the duration of the experimental period lasting more than 519days...
May 5, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28482026/pre-clinical-drug-screen-reveals-topotecan-actinomycin-d-and-volasertib-as-potential-new-therapeutic-candidates-for-etmr-brain-tumor-patients
#4
Christin Schmidt, Nil A Schubert, Sebastian Brabetz, Norman Mack, Benjamin Schwalm, Jennifer A Chan, Florian Selt, Christel Herold-Mende, Olaf Witt, Till Milde, Stefan M Pfister, Andrey Korshunov, Marcel Kool
Background: Embryonal tumor with multilayered rosettes (ETMR) is a rare and aggressive embryonal brain tumor that solely occurs in infants and young children and has only recently been recognized as a separate brain tumor entity in the WHO classification for CNS tumors. Patients have a very dismal prognosis with a median survival of 12 months upon diagnosis despite aggressive treatment. The aim of this study was to develop novel treatment regimens in a pre-clinical drug screen in order to inform potentially more active clinical trial protocols...
May 8, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28476749/panobinostat-induces-cd38-upregulation-and-augments-the-anti-myeloma-efficacy-of-daratumumab
#5
Estefanía García-Guerrero, Tea Gogishvili, Sophia Danhof, Martin Schreder, Celine Pallaud, Jose Antonio Pérez-Simón, Hermann Einsele, Michael Hudecek
No abstract text is available yet for this article.
May 5, 2017: Blood
https://www.readbyqxmd.com/read/28415789/hmga2-translocation-induced-in-skin-tumorigenesis
#6
Yong Li, Xiang-Ying Pi, Kelsey Boland, Sonali Lad, Kelly Johnson, Catherine Verfaillie, Rebecca J Morris
Hmga2 protein, a transcription factor involved in chromatin architecture, is expressed chiefly during development, where it has many key biological functions. When expressed in adult tissues from in various organs, Hmga2 is always related to cancer development. The role of Hmga2 in skin tumorigenesis is, however, not yet understood. We demonstrated that Hmga2 can be found in non-transformed epidermis, specifically located to the membrane of keratinocytes (KCs) in epidermis. Ex vivo culture of KCs and development of skin carcinomas in DMBA and TPA mouse models was associated with translocation of the Hmga2 protein from the membrane into the nucleus, where Hmga2 induced its own expression by binding to the Hmga2 promoter...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398261/novel-proteasome-inhibitors-and-histone-deacetylase-inhibitors-progress-in-myeloma-therapeutics
#7
REVIEW
Saurabh Chhabra
The unfolded protein response is responsible for the detection of misfolded proteins and the coordination of their disposal and is necessary to maintain the cellular homoeostasis. Multiple myeloma cells secrete large amounts of immunoglobulins, proteins that need to be correctly folded by the chaperone system. If this process fails, the misfolded proteins have to be eliminated by the two main garbage-disposal systems of the cell: proteasome and aggresome. The blockade of either of these systems will result in accumulation of immunoglobulins and other toxic proteins in the cytoplasm and cell death...
April 11, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28388244/which-therapies-will-move-to-the-front-line-for-multiple-myeloma
#8
María J Cejalvo, Javier de la Rubia
Despite substantial progress, multiple myeloma (MM) remains an incurable disease. Recently the availability of several novel drugs with different and innovative mechanisms of action (daratumumab, elotuzumab, carfilzomib, ixazomib, and panobinostat) has increased the therapeutic options but has also increased complexity in the management of patients with MM. Areas covered: The outstanding results observed in the relapsed setting with regimens including these new drugs has provided the investigators with several treatment options that are being tested also in patients with newly diagnosed MM...
April 24, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28363998/e3-ligase-ciap2-mediates-downregulation-of-mre11-and-radiosensitization-in-response-to-hdac-inhibition-in-bladder-cancer
#9
Judith Nicholson, Sarah Jevons, Blaz Groselj, Sophie Ellermann, Rebecca Konietzny, Martin Kerr, Benedikt M Kessler, Anne E Kiltie
The MRE11/RAD50/NBS1 (MRN) complex mediates DNA repair pathways, including double-strand breaks induced by radiotherapy. Meiotic recombination 11 homolog (MRE11) is downregulated by histone deacetylase inhibition (HDACi), resulting in reduced levels of DNA repair in bladder cancer cells and radiosensitization. In this study, we show that the mechanism of this downregulation is post-translational and identify a C-terminally truncated MRE11, which is formed after HDAC inhibition as full-length MRE11 is downregulated...
March 31, 2017: Cancer Research
https://www.readbyqxmd.com/read/28353192/three-cases-of-relapsed-refractory-multiple-myeloma-under-hemodialysis-treated-with-panobinostat-bortezomib-dexamethasone-fvd
#10
Yasunobu Sekiguchi, Haruko Takizawa, Tadaaki Inano, Yasutaka Fukuda, Mutsumi Wakabayashi, Keiji Sugimoto, Shigeki Tomita, Hiroshi Izumi, Noriko Nakamura, Tomohiro Sawada, Yasunori Ohta, Norio Komatsu, Masaaki Noguchi
Three patients under hemodialysis (HD) with relapsed/refractory multiple myeloma (MM) were administered panobinostat/bortezomib/dexamethasone (FVD). Case 1: The patient was a 66-year-old male with BJP-κ. FVD was effective, but HD could not be discontinued. He developed Grade 3 adverse events (AEs), including nausea, dehydration, and fatigue, following the common terminology criteria for adverse events v4.0. FVD was discontinued after the third course, while HD was continued. Case 2: The patient was a 65-year-old female with IgG-λ + BJP-λ...
March 28, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28352655/panobinostat-acts-synergistically-with-ibrutinib-in-diffuse-large-b-cell-lymphoma-cells-with-myd88-l265-mutations
#11
Patrizia Mondello, Elliott J Brea, Elisa De Stanchina, Eneda Toska, Aaron Y Chang, Myles Fennell, Venkatraman Seshan, Ralph Garippa, David A Scheinberg, José Baselga, Hans-Guido Wendel, Anas Younes
Diffuse large B cell lymphoma (DLBCL) frequently harbors genetic alterations that activate the B cell receptor (BCR) and TLR pathways, which converge to activate NF-κB. While selective inhibition of BTK with ibrutinib causes clinical responses in relapsed DLBCL patients, most responses are partial and of a short duration. Here, we demonstrated that MyD88 silencing enhanced ibrutinib efficacy in DLBCL cells harboring MyD88 L265P mutations. Chemical downregulation of MyD88 expression with HDAC inhibitors also synergized with ibrutinib...
March 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28347676/treating-multiple-myeloma-patients-with-oral-therapies
#12
REVIEW
Shaji K Kumar, Ravi Vij, Stephen J Noga, Deborah Berg, Lonnie Brent, Lawrence Dollar, Ajai Chari
Recent advances have highlighted the importance of long-term, continuous treatment in multiple myeloma (MM) to improve survival. However, treatment burden continues to negatively impact the real-world duration of MM therapy, and strategies to limit the adverse impact of treatment on patient quality of life are therefore particularly important. Oral MM therapies include the immunomodulatory drugs lenalidomide, thalidomide, and pomalidomide; the alkylating agents melphalan and cyclophosphamide; the histone deacetylase inhibitor panobinostat; the corticosteroids prednisone and dexamethasone; and the proteasome inhibitor ixazomib...
March 7, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28338993/dihydrocelastrol-inhibits-multiple-myeloma-cell-proliferation-and-promotes-apoptosis-through-erk1-2-and-il-6-stat3-pathways-in-vitro-and-in-vivo
#13
Liangning Hu, Huiqun Wu, Bo Li, Dongliang Song, Guang Yang, Gege Chen, Bingqian Xie, Zhijian Xu, Yong Zhang, Dandan Yu, Jun Hou, Wenqin Xiao, Xi Sun, Gaomei Chang, Yiwen Zhang, Lu Gao, Bojie Dai, Yi Tao, Jumei Shi, Weiliang Zhu
Multiple myeloma (MM) is the second most frequent malignant hematological disease. Dihydrocelastrol (DHCE) is synthesized by hydrogenated celastrol, a treterpene isolated from Chinese medicinal plant Tripterygium regelii. In this study, we first reported the anti-tumor activity of DHCE on MM cells. We found that DHCE could inhibit cell proliferation and promote apoptosis through caspase-dependent way in vitro. In addition, DHCE could inactivate the expression of interleukin (IL)-6 and downregulate the phosphorylation of extracellular regulated protein kinases (ERK1/2) and the signal transducer and activator of transcription 3 (STAT3) in MM...
May 1, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28325256/how-have-evolutions-in-strategies-for-the-treatment-of-relapsed-refractory-multiple-myeloma-translated-into-improved-outcomes-for-patients
#14
REVIEW
Pieter Sonneveld, Edwin De Wit, Philippe Moreau
Although multiple myeloma (MM) remains incurable, the introduction of novel agents has improved clinical outcomes dramatically over the past 15 years. Response rates have risen from ∼30% with single agents to up to 90% with combination therapies. The immunomodulatory drugs (IMiDs) thalidomide and lenalidomide, and the proteasome inhibitor bortezomib, form the foundations for treatment of relapsed and/or refractory MM (RRMM). Newer agents, such as the IMiD pomalidomide, the histone deacetylase inhibitor panobinostat and the proteasome inhibitors carfilzomib and ixazomib, as well as the monoclonal antibodies daratumumab and elotuzumab, have further improved overall response rates in these patients...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28273193/-drug-therapy-of-lymphomas
#15
Lajos Gergely
The therapy of lymphomas has undergone a major expansion during the last decade. Novel therapeutic targets have appeared beyond classical chemotherapeutic combinations. These novel drugs have very pronounced action across lymphoma types, and their toxicity profile is usually better tolerable compared to standard chemotherapies. These new therapies are enabling us to offer treatment to those patients who have refractory disease, and we had no option to treat them before these drugs. The author describes several new therapeutic options...
March 8, 2017: Magyar Onkologia
https://www.readbyqxmd.com/read/28260886/convection-enhanced-delivery-of-panobinostat-lbh589-loaded-pluronic-nano-micelles-prolongs-survival-in-the-f98-rat-glioma-model
#16
W G Singleton, A M Collins, A S Bienemann, C L Killick-Cole, H R Haynes, D J Asby, C P Butts, M J Wyatt, N U Barua, S S Gill
BACKGROUND: The pan-histone deacetylase inhibitor panobinostat is a potential therapy for malignant glioma, but it is water insoluble and does not cross the blood-brain barrier when administered systemically. In this article, we describe the in vitro and in vivo efficacy of a novel water-soluble nano-micellar formulation of panobinostat designed for administration by convection enhanced delivery (CED). MATERIALS AND METHODS: The in vitro efficacy of panobinostat-loaded nano-micelles against rat F98, human U87-MG and M059K glioma cells and against patient-derived glioma stem cells was measured using a cell viability assay...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28249907/hdac-inhibitor-panobinostat-engages-host-innate-immune-defenses-to-promote-the-tumoricidal-effects-of-trastuzumab-in-her2-tumors
#17
Mikolaj Medon, Eva Vidacs, Stephin J Vervoort, Jason Li, Misty R Jenkins, Kelly M Ramsbottom, Joseph A Trapani, Mark J Smyth, Phillip K Darcy, Peter W Atadja, Michael A Henderson, Ricky W Johnstone, Nicole M Haynes
Histone deacetylase inhibitors (HDACi) may engage host immunity as one basis for their antitumor effects. Herein we demonstrate an application of this concept using the HDACi panobinostat to augment the antitumor efficacy of trastuzumab (anti-HER2) therapy, through both tumor cell autonomous and non-autonomous mechanisms. In HER2+ tumors that are inherently sensitive to the cytostatic effects of trastuzumab, co-treatment with panobinostat abrogated AKT signaling and triggered tumor regression in mice that lacked innate and/or adaptive immune effector cells...
March 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28205262/modern-multiple-myeloma-therapy-deep-sustained-treatment-response-and-good-clinical-outcomes
#18
REVIEW
O Landgren, K Iskander
In the USA at the beginning of this century, the average overall survival in patients with multiple myeloma was about 3 years. Around that time, three drugs (bortezomib, lenalidomide and thalidomide) were introduced for the treatment of multiple myeloma and, in 2012, carfilzomib received accelerated approval by the US Food and Drug Administration (FDA). Driven by access to better drugs, median overall survival in younger patients (aged <50 years) was >10 years by 2014. The FDA approved 14 new drugs for the treatment of cancer in 2015; four of these were approved for the treatment of myeloma (panobinostat, daratumumab, elotuzumab and ixazomib)...
February 16, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28203342/optimizing-current-and-emerging-therapies-in-multiple-myeloma-a-guide-for-the-hematologist
#19
REVIEW
Shahzad Raza, Rachael A Safyan, Evan Rosenbaum, Alex S Bowman, Suzanne Lentzsch
Multiple myeloma (MM) is the second most common hematologic malignancy. The diagnosis of MM requires ⩾10% clonal plasma cells in the bone marrow or biopsy-proven plasmacytoma, plus evidence of end-organ damage (hypercalcemia, renal failure, anemia, and lytic bone lesions). The definition of MM has recently been expanded to include a ⩾60% clonal plasma cell burden in the bone marrow, serum involved/uninvolved light chain ratio of ⩾100, or more than one focal lesion on magnetic resonance imaging ⩾5 mm in the absence of end-organ damage...
February 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/28202759/relationship-between-measures-of-hiv-reactivation-and-decline-of-the-latent-reservoir-under-latency-reversing-agents
#20
Janka Petravic, Thomas A Rasmussen, Sharon R Lewin, Stephen J Kent, Miles P Davenport
Antiretroviral-free HIV remission requires substantial reduction of the number of latently infected cells and enhanced immune control of viremia. Latency-reversing agents (LRAs) aim to eliminate latently infected cells by increasing the rate of reactivation of HIV transcription, which exposes these cells to killing by the immune system. As LRAs are explored in clinical trials, it becomes increasingly important to assess the effect of an increased HIV reactivation rate on the decline of latently infected cells and to estimate LRA efficacy in increasing virus reactivation...
May 1, 2017: Journal of Virology
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