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Molecular myeloma

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https://www.readbyqxmd.com/read/28316846/donor-derived-smoldering-multiple-myeloma-following-a-hematopoietic-cell-transplantation-for-aml
#1
Bita Fakhri, Mark Fiala, Michael Slade, Peter Westervelt, Armin Ghobadi
Posttransplant Lymphoproliferative Disorder (PTLD) is one of the most common malignancies complicating solid organ transplantation. In contrast, PTLD accounts for a minority of secondary cancers following allogeneic hematopoietic cell transplantation (HCT). Here we report on a 61-year-old woman who received an ABO-mismatched, HLA-matched unrelated donor hematopoietic cell transplantation from a presumably healthy donor for a diagnosis of acute myeloid leukemia (AML). Eighteen months following her transplant, she developed a monoclonal gammopathy...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28316065/identification-of-key-genes-and-construction-of-microrna-mrna-regulatory-networks-in-multiple-myeloma-by-integrated-multiple-geo-datasets-using-bioinformatics-analysis
#2
Hongyu Gao, Huihan Wang, Wei Yang
Multiple myeloma (MM) is a common hematological malignancy. To identify key genes and microRNAs in MM, we downloaded two gene expression profiles (GSE16558 and GSE47552) and two microRNA expression profiles (GSE17498 and GSE16558) from the Gene Expression Omnibus (GEO) database. A total of 596 differentially expressed genes (DEGs) and 39 differentially expressed microRNAs (DEMs) were screened out. Pathway analysis showed that upregulated genes were mainly enriched in the "B cell receptor signaling pathway", "Cell cycle" and "NF-kappa B signaling pathway", whereas downregulated genes were mainly enriched in the "Ribosome", "FoxO signaling pathway" and "p53 signaling pathway"...
March 18, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28304351/the-preparation-and-identification-of-a-monoclonal-antibody-against-citrinin-and-the-development-of-detection-via-indirect-competitive-elisa
#3
Shimuye Kalayu Yirga, Sumei Ling, Yanling Yang, Jun Yuan, Shihua Wang
Citrinin (CTN) is a hepato-nephrotoxic mycotoxin produced by fungi genera of Aspergillus, Monauscus, and Penicillium. CTN contaminates grains, fruits, juices and vegetables, and causes various toxic effects to humans and animals. It has small molecular weight, which is non-immunogenic to animals. Thus, CTN was conjugated to bovine serum albumin (BSA) and ovalbumin (OVA), respectively, by amide bonds using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Mice were immunized with CTN-BSA conjugates, and spleen cells of the immunized mice were fused with Sp2/0 myeloma cells to obtain 21H27 hybriodoma cell...
March 17, 2017: Toxins
https://www.readbyqxmd.com/read/28301380/nitroxoline-shows-antimyeloma-activity-by-targeting-the-trim25-p53-axle
#4
Hongwu Mao, Yanyun Du, Zubin Zhang, Biyin Cao, Jun Zhao, Haibin Zhou, Xinliang Mao
The aim of this study was to identify the most potent quinoline-based anti-infectives for the treatment of multiple myeloma (MM) and to understand the molecular mechanisms. A small-scale screen against a panel of marketed quinoline-based drugs was performed in MM cell lines. Cell apoptosis was examined by flow cytometry. Anti-MM activity was also evaluated in nude mice. Western blotting was performed to investigate mechanisms. Nitroxoline (NXQ) was the most effective in suppressing MM cell proliferation. NXQ induced more than 40% MM cell apoptosis within 24 h and potentiated anti-MM activities of current major drugs including doxorubicin and lenalidomide...
April 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28285807/a-brighter-side-to-thalidomide-its-potential-use-in-immunological-disorders
#5
REVIEW
David Millrine, Tadamitsu Kishimoto
Thalidomide and its derivatives are immunomodulatory drugs (IMiDs) known for their sedative, teratogenic, anti-angiogenic, and anti-inflammatory properties. Commonly used in the treatment of cancers such as multiple myeloma and myelodysplastic syndrome (MDS), IMiDs have also been used in the treatment of an inflammatory skin pathology associated with Hansen's disease/leprosy. They have also shown promise in the treatment of autoimmune disorders including systemic lupus erythmatosus (SLE) and inflammatory bowel disease (IBD)...
March 9, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/28282510/cxcr4-cd184-expression-on-stem-cell-harvest-and-cd34-cells-post-transplant
#6
Inas Asfour, Hanaa Afify, Shaza Elkourashy, Maryse Ayoub, Gihan Kamal, Mary Gamal, Ghada Elgohary
OBJECTIVES/BACKGROUND: CXCR4 is a receptor for stromal-derived factor-1 (SDF-1), a molecule that has a chemotactic activity for lymphocytes and is important in homing of hematopoietic stem cells to their adult marrow. We evaluated the CXCR4 (CD184) expression in the harvest cells and in the post-transplant bone marrow (BM) and its relation to engraftment, as determined by the consensus criteria and chimerism. METHODS: This is a prospective study which included 30 patients undergoing hematopoietic stem cell transplantation; 15 patients received autograft and 15 patients received allograft on dates between January 2012 and May 2014...
March 2, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28280367/clarifying-the-molecular-mechanism-associated-with-carfilzomib-resistance-in-human-multiple-myeloma-using-microarray-gene-expression-profile-and-genetic-interaction-network
#7
Zhihong Zheng, Tingbo Liu, Jing Zheng, Jianda Hu
Carfilzomib is a Food and Drug Administration-approved selective proteasome inhibitor for patients with multiple myeloma (MM). However, recent studies indicate that MM cells still develop resistance to carfilzomib, and the molecular mechanisms associated with carfilzomib resistance have not been studied in detail. In this study, to better understand its potential resistant effect and its underlying mechanisms in MM, microarray gene expression profile associated with carfilzomib-resistant KMS-11 and its parental cell line was downloaded from Gene Expression Omnibus database...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28276319/long-non-coding-rna-crnde-promotes-multiple-myeloma-cell-growth-by-suppressing-mir-451
#8
Yi-Bin Meng, Xin He, Yun-Fei Huang, Qi-Ning Wu, Yong-Cun Zhou, Ding-Jun Hao
Long non-coding RNAs (lncRNAs) have been determinately identified as potential regulatory factor in multiple tumors, aswell as multiple myeloma (MM). However, the role of colorectal neoplasia differentially expressed (CRNDE) in pathogenesis of MM remains unclear. In this study, we found that the CRNDE expression level, in MM sample and cell lines, is higher than control detected by real-time qPCR, which is also closely related to tumor progression and poor survival in MM patients. Afterwards, knockdown of CRNDE significantly inhibits the proliferative vitality of MM cells (U266 and RPMI8226), meanwhile, induces cell cycle arrest in G0/G1 phase and apoptosis-promoting...
March 9, 2017: Oncology Research
https://www.readbyqxmd.com/read/28274321/-preparation-of-monoclonal-antibody-against-4-amylphenol-and-homology-modeling-of-its-fv-fragment
#9
Lei Cheng, Haizhen Wu, Jing Fei, Lujia Zhang, Jiang Ye, Huizhan Zhang
Objective To prepare and characterize a monoclonal antibody (mAb) against 4-amylphenol (4-AP), clone its cDNA sequence and make homology modeling for its Fv fragment. Methods A high-affinity anti-4-AP mAb was generated from a hybridoma cell line F10 using electrofusion between splenocytes from APA-BSA-immunized mouse and Sp2/0 myeloma cells. Then we extracted the mRNA of F10 cells and cloned the cDNA of mAb. The homology modeling and molecular docking of its Fv fragment was conducted with biological software...
March 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28270081/tocilizumab-labeling-with-99mtechnetium-via-hynic-as-a-molecular-diagnostic-agent-for-multiple-myeloma
#10
Ximena Camacho, Camila Longo Machado, Maria Fernanda García, Marcelo Fernández, Natalia Oddone, Juan Benech, Juan Pablo Gambini, Hugo Cerecetto, Roger Chammas, Pablo Cabral, Eloisa Riva
BACKGROUND: Multiple myeloma (MM) incidence and mortality is increasing worldwide. Interleukin-6 (IL-6) is one of the key molecules related to growth, survival and proliferation of myeloma cells. Tocilizumab is a humanized monoclonal antibody directed against receptor of IL-6. OBJECTIVE: To radiolabel Tocilizumab with 99mTechnetium as a potential imaging agents for MM. METHODS: IL-6R expression was studied by laser confocal microscopy in MM cell lines (U266, NCI-H929 and MM1S)...
February 13, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28264055/enhancement-of-pomalidomide-anti-tumor-response-with-acy-241-a-selective-hdac6-inhibitor
#11
Brian J North, Ingrid Almeciga-Pinto, David Tamang, Min Yang, Simon S Jones, Steven N Quayle
Thalidomide-based Immunomodulatory Drugs (IMiDs®), including lenalidomide and pomalidomide, are effective therapeutics for multiple myeloma. These agents have been approved with, or are under clinical development with, other targeted therapies including proteasome inhibitors, αCD38 monoclonal antibodies, as well as histone deacetylase (HDAC) inhibitors for combination therapy. HDAC inhibitors broadly targeting Class I and IIb HDACs have shown potent preclinical efficacy but have frequently demonstrated an undesirable safety profile in combination therapy approaches in clinical studies...
2017: PloS One
https://www.readbyqxmd.com/read/28259901/proteomic-analysis-of-oridonin-induced-apoptosis-in-multiple-myeloma-cells
#12
Jing Zhao, Mei Zhang, Pengcheng He, Junjie Zhao, Ying Chen, Jun Qi, Yuan Wang
Oridonin is a diterpenoid compound isolated from the medicinal herb Rabdosia rubescens, and has shown marked antitumor effects against different types of cancer. However, the definitive systematic molecular mechanism underlying the antitumor activity of oridonin in multiple myeloma remains to be elucidated. In the present study, cell viability and cytotoxicity were examined to determine the appropriate concentration for proteomic investigation. In addition, cell apoptosis was evaluated using flow cytometry and transmission electron microscopy...
February 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28254863/bone-pain-induced-by-multiple-myeloma-is-reduced-by-targeting-v-atpase-and-asic3
#13
Masahiro Hiasa, Tatsuo Okui, Yohance M Allette, Matthew S Ripsch, Ge-Hong Sun-Wada, Hiroki Wakabayashi, G David Roodman, Fletcher A White, Toshiyuki Yoneda
Multiple myeloma patients experience severe bone pain (MMBP) that is undertreated and poorly understood. In this study, we studied MMBP in an intratibial mouse xenograft model that employs JJN3 human multiple myeloma cells. In this model, mice develop MMBP associated in bone with increased sprouting of calcitonin gene-related peptide-positive (CGRP(+)) sensory nerves and in dorsal root ganglia (DRG) with upregulation of phosphorylated ERK1/2 (pERK1/2) and pCREB, two molecular indicators of neuron excitation...
March 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28252631/-myeloproliferative-masks-of-multiple-myeloma-a-review-of-literature-and-clinical-case-reports
#14
V V Ryzhko, A E Grachev, A A Klodzinsky, T V Ivanova, M S Sataeva, E O Gribanova
Concurrences of multiple myeloma with myeloproliferative diseases or secondary myeloid leukemoid reactions are rather rare. The paper describes 3 cases of multiple myeloma: the first case concurrent with neutrophilic leukocytosis; the second case with secondary erythropoetin-dependent erythrocytosis, and the third case with chronic myeloid leukemia. In such cases, an accurate diagnosis requires molecular testing, besides routine clinical and laboratory studies. The paper discusses therapeutic strategy in cases of a concurrence of 2 competing tumors of the blood system: to treat them simultaneously or the most aggressive tumor now, as well as a relationship between multiple myeloma and chronic myeloid leukemia, other myeloproliferative disorders, and secondary myeloid leukemoid reactions...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28238095/adp-ribosylation-factor-1-arf1-takes-part-in-cell-proliferation-and-cell-adhesion-mediated-drug-resistance-cam-dr
#15
Xiaohong Xu, Qiru Wang, Yunhua He, Linlin Ding, Fei Zhong, Yangyu Ou, Yaodong Shen, Hong Liu, Song He
Cell adhesion-mediated drug resistance (CAM-DR) remains the primary obstacle in human multiple myeloma (MM) therapy. In this study, we aimed at investigating the expression and biologic function of ARF1 in MM. We determined that ARF1 expression was positively correlated with cell proliferation and knockdown of ARF1 contributed to CAM-DR. The enhancement in the adhesion of MM cells to fibronectin (FN) or the bone marrow stroma cell line HS-5 cells translated to an increased CAM-DR phenotype. Importantly, we showed that this CAM-DR phenotype was correlated with the phosphorylation of Akt and ERK in MM cells...
February 25, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28219836/donor-lymphocyte-infusion-for-relapsed-hematological-malignancies-after-unrelated-allogeneic-bone-marrow-transplantation-facilitated-by-the-japan-marrow-donor-program
#16
Toshihiro Miyamoto, Takahiro Fukuda, Marie Nakashima, Tomoko Henzan, Shinsuke Kusakabe, Naoki Kobayashi, Junichi Sugita, Takeshi Mori, Mineo Kurokawa, Shin-Ichiro Mori
To evaluate the safety and efficacy of donor lymphocyte infusion (DLI), we retrospectively analyzed 414 recipients who received unrelated DLI (UDLI) for the treatment of relapsed hematological malignancy after unrelated bone marrow transplantation (BMT). UDLI was administered for acute myelogenous leukemia (n = 184), myelodysplastic syndrome (n = 69), acute lymphocytic leukemia (n = 57), chronic myelogenous leukemia (CML, n = 36), lymphoid neoplasms (n = 38), adult T cell leukemia/lymphoma (n = 18), and multiple myeloma (n = 12)...
February 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28219227/-targeting-mir155-restores-chemotherapy-sensitivity-in-drug-resistant-myeloma-cell-line-rpmi8226-dox-cells
#17
C R Xiao, X L Hong, J S Hu, Y M Chen, Q Y Lu
Objective: To explore the mechanism of abnormal expression of microRNA155 (miR155) in myeloma drug-resistance to probe the possibility of inhibiting miR155 expression to restore chemotherapy sensitivity and its molecular mechanism in drug-resistant myeloma cells. Methods: Drug-resistant myeloma cell-line RPMI8226/DOX was established by culturing RPMI8226 cells with continuous low concentration and intermittent gradually increasing concentration of doxorubicin in vitro; The levels of miR155 mRNA were measured by qRT-PCR, and both proteins FOXO3a and BCL-2 expressions were detected by Western blot in cell-lines RPMI8226/S and RPMI8226/Dox...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28214995/development-and-characterization-of-monoclonal-antibody-against-human-il-37b
#18
Yu-Chi Gao, Yan Jia, De-Qian Xiao, Xin Wang, You-Chao Dai, Shi-Yan Yu, Chen Chen, Ze-Gang Zhuang, Xiao-Xia Fu, Jun-Ai Zhang, Bi-Ying Zheng, Zhi-Hong Chen, Ji-Xin Zhong, Zhang-Quan Chen, Jun-Fa Xu
IL-37 has been described as a natural inhibitor of immune responses. Monoclonal antibody (mAb) against human IL-37b with high affinity and specificity can serve as a molecular probe to detect IL-37 and study IL-37 functions, mechanisms and related signal pathways in inflammatory diseases. However, there are very few such mAbs against human IL-37 commercially available so far. In the current study, monoclonal antibodies against human IL-37b were developed by fusing splenocytes from immunized mouse with SP2/0 myeloma cells and polyethylene glycol...
February 18, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28208828/ginkgolic-acid-c-17-1-derived-from-ginkgo-biloba-leaves-suppresses-constitutive-and-inducible-stat3-activation-through-induction-of-pten-and-shp-1-tyrosine-phosphatase
#19
Seung Ho Baek, Jong Hyun Lee, Chulwon Kim, Jeong-Hyeon Ko, Seung-Hee Ryu, Seok-Geun Lee, Woong Mo Yang, Jae-Young Um, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Gautam Sethi, Kwang Seok Ahn
Ginkgolic acid C 17:1 (GAC 17:1) extracted from Ginkgo biloba leaves, has been previously reported to exhibit diverse antitumor effect(s) through modulation of several molecular targets in tumor cells, however the detailed mechanism(s) of its actions still remains to be elucidated. Signal transducer and activator of transcription 3 (STAT3) is an oncogenic transcription factor that regulates various critical functions involved in progression of diverse hematological malignancies, including multiple myeloma, therefore attenuating STAT3 activation may have a potential in cancer therapy...
February 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208215/nanoparticle-delivery-systems-general-approaches-and-their-implementation-in-multiple-myeloma
#20
REVIEW
Pilar de la Puente, Abdel Kareem Azab
Multiple myeloma (MM) is a hematological malignancy that remains incurable, with relapse rates greater than 90%. The main limiting factor for the effective use of chemotherapies in MM is the serious side effects caused by these drugs. The emphasis in cancer treatment has shifted from cytotoxic, non-specific chemotherapies to molecularly targeted and rationally designed therapies showing greater efficacy and fewer side effects. Traditional chemotherapy has shown several disadvantages such as lack of targeting capabilities, systemic toxicity and side effects; low therapeutic index, as well as, most anticancer drugs have poor water solubility...
February 16, 2017: European Journal of Haematology
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