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https://www.readbyqxmd.com/read/28540166/inhibition-of-protein-kinases-by-anticancer-dna-intercalator-4-butylaminopyrimido-4-5-4-5-thieno-2-3-b-quinoline
#1
HeggoduG Rohit Kumar, Chethan S Kumar, Hulihalli N Kiran Kumar, Gopal M Advi Rao
Targeting protein kinases (PKs) has been a promising strategy in treating cancer, as PKs are key regulators of cell survival and proliferation. Here in this study, we studied the ability of pyrimido[4',5':4,5]thieno(2,3-b)quinolines (PTQ) to inhibit different PKs by performing computational docking and in vitro screening. Docking studies revealed that 4-butylaminopyrimido[4',5':4,5]thieno(2,3-b)quinoline (BPTQ) has a higher order of interaction with the kinase receptors than other PTQ derivatives. In vitro screening confirms that BPTQ inhibits VEGFR1 and CHK2, with the IC50 values of 0...
May 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28539739/effects-of-ligusticum-porteri-osha-root-extract-on-human-promyelocytic-leukemia-cells
#2
Khanh Nguyen, Jean Sparks, Felix Omoruyi
BACKGROUND: Ligusticum porteri roots have been traditionally used in folk medicine, but the scientific basis is unclear. OBJECTIVE: To investigate the cytotoxicity, antioxidant, and immunomodulatory effects of L. porteri root extract on human promyelocytic leukemia (HL-60) cells and H2O2-induced oxidative damaged HL-60 cells. MATERIALS AND METHODS: HL-60 cells were incubated with different concentrations of root extract, and cells were harvested for viability assays on day 3 and 7...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28536942/lrrc25-plays-a-key-role-in-all-trans-retinoic-acid-induced-granulocytic-differentiation-as-a-novel-potential-leukocyte-differentiation-antigen
#3
Weili Liu, Ting Li, Pingzhang Wang, Wanchang Liu, Fujun Liu, Xiaoning Mo, Zhengyang Liu, Quansheng Song, Ping Lv, Guorui Ruan, Wenling Han
Leukocyte differentiation antigens (LDAs) play important roles in the immune system, by serving as surface markers and participating in multiple biological activities, such as recognizing pathogens, mediating membrane signals, interacting with other cells or systems, and regulating cell differentiation and activation. Data mining is a powerful tool used to identify novel LDAs from whole genome. LRRC25 (leucine rich repeat-containing 25) was predicted to have a role in the function of myeloid cells by a large-scale "omics" data analysis...
May 23, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28533192/in-vitro-effects-of-reprogramming-factors-on-the-expressions-of-pluripotent-genes-and-cd34-gene-in-human-acute-promyelocytic-leukemia-hl-60-cells
#4
Liang-Fang Zhu, Min Xiao, Yong-Quan Chen, Ling-Yan Wang, Xiao-Feng Luo, Xiao-Hong Yuan, Jin-Hua Ren, Zhi-Zhe Chen, Jian-Da Hu, Ting Yang
OBJECTIVE: Our study aims to explore the in vitro effects of reprogramming factors on the expressions of pluripotent genes and CD34 gene in HL-60 cells. METHODS: According to the construction of retroviral vector LV-OSCK of reprogramming factors (Oct-4, Sox2, Klf4, c-Myc), 293T cells were transfected to detect virus titer. The endogenous pluripotent genes (Oct4, SOX2, c-Myc and Klf4) and CD34 mRNA and protein expressions were detected by AP staining, immunofluorescence staining, qRT-PCR and flow cytometry...
May 19, 2017: Genomics
https://www.readbyqxmd.com/read/28531375/mouse-minipuberty-coincides-with-gonocyte-transformation-into-spermatogonial-stem-cells-a-model-for-human-minipuberty
#5
Ruili Li, Amanda Vannitamby, Sarah S K Yue, David Handelsman, John Hutson
As the transient postnatal hormone surge in humans, known as 'minipuberty', occurs simultaneously with key steps in germ-cell development, we investigated whether similar changes occur in the hypothalamic-pituitary-testicular axis of neonatal mice at a time that would coincide with gonocyte transformation into spermatogonial stem cells (SSC). Serum and testes were collected from C57Bl/6 mice at embryonic Day 17 (E17), birth (postnatal Day 0; P0) and daily until P10. Serum FSH and testosterone levels in both serum and testes were analysed and gene expression of FSH receptor (Fshr), luteinising hormone receptor (Lhr), anti-Müllerian hormone (Amh), octamer-binding transcription factor 4 (Oct-4), membrane type 1 metalloprotease (Mt1-mmp), proto-oncogene C-kit and promyelocytic leukaemia zinc finger (Plzf ) was quantified by real-time polymerase chain reaction...
May 23, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28529810/molecular-profiling-a-case-of-zbtb16-rara-acute-promyelocytic-leukemia
#6
Stephen E Langabeer, Lisa Preston, Johanna Kelly, Matt Goodyer, Ezzat Elhassadi, Amjad Hayat
Several variant RARA translocations have been reported in acute promyelocytic leukemia (APL) of which the t(11;17)(q23;q21), which results in a ZBTB16-RARA fusion, is the most widely identified and is largely resistant to therapy with all-trans retinoic acid (ATRA). The clinical course together with the cytogenetic and molecular characterization of a case of ATRA-unresponsive ZBTB16-RARA APL is described. Additional mutations potentially cooperating with the translocation fusion product in leukemogenesis have been hitherto unreported in ZBTB16-RARA APL and were sought by application of a next-generation sequencing approach to detect those recurrently found in myeloid malignancies...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28521962/the-functional-roles-of-pml-nuclear-bodies-in-genome-maintenance
#7
REVIEW
Hae Ryung Chang, Anudari Munkhjargal, Myung-Jin Kim, Seon Young Park, Eunyoung Jung, Jae-Ha Ryu, Young Yang, Jong-Seok Lim, Yonghwan Kim
In the nucleus, there are several membraneless structures called nuclear bodies. Among them, promyelocytic leukemia nuclear bodies (PML-NBs) are involved in multiple genome maintenance pathways including the DNA damage response, DNA repair, telomere homeostasis, and p53-associated apoptosis. In response to DNA damage, PML-NBs are coalesced and divided by a fission mechanism, thus increasing their number. PML-NBs also play a role in repairing DNA double-strand breaks (DSBs) by homologous recombination (HR). Clinically, the dominant negative PML-RARα fusion protein expressed in acute promyelocytic leukemia (APL) inhibits the transactivation of downstream factors and disrupts PML function, revealing the tumor suppressor role of PML-NBs...
May 5, 2017: Mutation Research
https://www.readbyqxmd.com/read/28521363/a-cisplatin-derivative-tetra-pt-bpy-as-an-oncotherapeutic-agent-for-targeting-alt-cancer
#8
Xiao-Hui Zheng, Xin Nie, Yiming Fang, Zepeng Zhang, Yingnan Xiao, Zongwan Mao, Haiying Liu, Jian Ren, Feng Wang, Lixin Xia, Junjiu Huang, Yong Zhao
Background: In approximately 15% of human cancers, telomere length is maintained independently of telomerase by the homologous recombination (HR)-mediated alternative lengthening of telomeres (ALT) pathway. Whether the ALT pathway can be exploited for therapeutic treatment remains unknown. The purpose of this study is to develop oncotherapeutic agent to target ALT cancers. Methods: Surface plasmon resonance assay, antibody to G-quadruplex, and fluorescence in situ hybridization (FISH) were used to discover Tetra-Pt(bpy), a cisplatin derivative that specifically targets telomeric G-quadruplex...
October 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28521025/mechanism-of-as2o3-induced-action-potential-prolongation-and-using-hips-cms-to-evaluate-the-rescue-efficacy-of-drugs-with-different-rescue-mechanism
#9
Meng Yan, Lifang Feng, Yanhui Shi, Junnan Wang, Yan Liu, Fengmei Li, Baoxin Li
Arsenic trioxide (As2O3) has been verified as a breakthrough in the management of acute promyelocytic leukemia in recent decades. However, cardiotoxicity, especially long QT syndrome (LQTS) has become the most important issue during As2O3 treatment. The characterized mechanisms behind this adverse effect are inhibition of cardiac hERG channel trafficking and increase of cardiac calcium currents. In our study, we found a new pathway underlying As2O3-induced cardiotoxicity that As2O3 accelerates lysosomal degradation of hERG on plasma membrane after using brefeldin A (BFA) to block protein trafficking...
May 17, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28511493/isolated-central-nervous-system-cns-relapse-in-paediatric-acute-promyelocytic-leukaemia-a-systematic-review
#10
REVIEW
Smeeta Gajendra, Rashmi Ranjan Das, Rashi Sharma
INTRODUCTION: Extramedullary disease, as a whole, is rare in Acute Promyelocytic Leukaemia (APML). If at all relapse occurs, following sites are involved: Central Nervous System (CNS), skin, testes, mediastinum, gingiva, and ear. Isolated CNS relapses after complete morphological and molecular remission is rarer particularly in children. AIM: To review the literature systematically to find out the incidence of isolated CNS relapse in paediatric APML cases. MATERIALS AND METHODS: A systematic search of major databases (Medline, Pubmed and Google Scholar) was conducted...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28511492/cardiac-myeloid-sarcoma-review-of-literature
#11
REVIEW
Archana Gautam, Ghazal Kooshk Jalali, Kamal Kant Sahu, Prateek Deo, Sikander Ailawadhi
Granulocytic Sarcomas (GS) also called as Myeloid Sarcomas (MS) or chloromas are the representatives of extramedullary infiltrates of immature myeloid cells including myeloblasts, promyelocytes and myelocytes. Primary cardiac malignancies per se are rare and infiltration of cardiac muscles by secondary malignant cells is also an uncommon finding. Out of these cardiac tumors, contribution of Cardiac Myeloid Sarcoma (CMS) is even more smaller thereby limiting our knowledge about this rare entity. Because of its very lower incidence, an exact guideline for diagnosis and management is still missing and usually haematologists around the world are treating CMS based on their clinical acumen...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507443/erratum-retinoic-acid-and-arsenic-trioxide-in-the-treatment-of-acute-promyelocytic-leukemia-current-perspectives-corrigendum
#12
(no author information available yet)
[This corrects the article on p. 1585 in vol. 10, PMID: 28352191.].
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28502306/-detection-and-analysis-of-immune-molecules-in-leukemia-cell-surfaces-of-acute-promyelocytic-leukemia
#13
Ting Dong, Yaxian Jiang, Zhengfa Li, Hongmei Ouyang, Qin Zhang
Objective To investigate the immunophenotypic characteristics of acute promyelocytic leukemia (APL) and its clinical significance. Methods Immunophenotyping was performed by four-color flow cytometry with CD45/SSC-lin gating for neoplastic cells and was divided into five levels according to the intensity of antigen expression. Results The expression intensity and percentage of typical APL phenotypes were: myeloperoxidase (MPO) and CD33 were consistently expressed (100%); CD38 (82.35%), CD13 (64.71%), CD64 (50%), CD123 (47...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28498435/plumbagin-enhances-trail-induced-apoptosis-of-human-leukemic-kasumi%C3%A2-1-cells-through-upregulation-of-trail-death-receptor-expression-activation-of-caspase-8-and-inhibition-of-cflip
#14
Xiaoyang Kong, Jing Luo, Tongpeng Xu, Yunjiao Zhou, Zengkai Pan, Yinghua Xie, Limin Zhao, Yingting Lu, Xiyao Han, Zhixiong Li, Ligen Liu
Although the patients with t(8;21) acute myeloid leukemia (AML) have a favorable prognosis compared with other non-acute promyelocytic leukemia AML patients, only ~50% patients with this relatively favorable subtype can survive for 5 years and refractory/relapse is common in clinical practice. So it is necessary to find novel agents to treat this type of AML. In this study, the effects and the mechanisms of plumbagin and recombinant soluble tumor necrosis factor‑α-related apoptosis-inducing ligand (rsTRAIL) on leukemic Kasumi‑1 cells were primarily investigated...
May 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28496950/development-of-flow-cytometry-fluorescent-in-situ-hybridization-flow-fish-method-for-detection-of-pml-rara-chromosomal-translocation-in-acute-promyelocytic-leukemia-cell-line
#15
Fatemeh Zahedipour, Reza Ranjbaran, Abbas Behzad Behbahani, Khalil Tavakol Afshari, Mohammad Ali Okhovat, Gholamhossein Tamadon, Sedigheh Sharifzadeh
BACKGROUND: Acute Promyelocytic Leukemia (APL) is a subclass of acute myeloid leukemia. The chromosomal aberration in 95% of APL cases is t(15; 17) (q22; q21), which prevents cell differentiation. Characterization of the underlying molecular lesion is valuable in determining optimal treatment strategy. The goal of this study was to develop a new and powerful Flow- FISH technique to detect the long isoform (L) of PML-RARa fusion transcript in NB4 cell line. METHODS: To achieve the best condition for fixation, two different fixatives including 2% paraformaldehyde and 75% ethanol were used...
April 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28494415/studies-on-curative-efficacy-of-monoterpene-eugenol-on-anti-leukemic-drug-arsenic-trioxide-induced-cardiotoxicity
#16
Prakash Binu, Nellikunnath Priya, Surendran Abhilash, Radhakrishnan Chandraprabha Vineetha, Raveendran Harikumaran Nair
BACKGROUND: Arsenic trioxide (As2O3) is emerging as a frontline agent for the treatment of acute promyelocytic leukemia (APL) but the therapeutic application is limited by its toxicity. QT prolongation, torsades de pointes and sudden cardiac death have been implicated in the As2O3 therapy. So eugenol is a monoterpene compound is well known for its antioxidant properties and protective effect on the cardiovascular system. OBJECTIVE: In this study, the cardioprotective effect of eugenol on cardiac electrical conductivity, tissue electrolytes, myocardial markers, antioxidant system, lipid peroxidation and nitric oxide production was investigated in male Wistar rats treated with arsenic trioxide...
May 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28492552/all-trans-retinoic-acid-and-arsenic-trioxide-fail-to-derepress-the-monocytic-differentiation-driver-irf8-in-acute-promyelocytic-leukemia-cells
#17
XiangZhen Liu, Juan Chen, ShanHe Yu, Li Yan, HeZhou Guo, JianMin Dai, Wu Zhang, Jiang Zhu
All-trans retinoic acid (ATRA) and/or arsenic trioxide (ATO) administration leads to granulocytic maturation and/or apoptosis of acute promyelocytic leukemia (APL) cells mainly by targeting promyelocytic leukemia/retinoic acid receptor alpha (PML/RARα). Yet, ~10-15% of APL patients are not cured by ATRA- and ATO-based therapies, and a potential failure of ATRA and ATO in completely reversing PML/RARα-driven oncogenic alterations has not been comprehensively examined. Here we characterized the in vivo primary responses of dysregulated genes in APL cells treated with ATRA and ATO using a GFP-labeled APL model...
May 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28491690/dexamethasone-suppresses-long-qt-phenotype-in-patient-with-acute-promyelocytic-leukemia-treated-with-arsenic
#18
Jeffrey R Winterfield, David J Milan
No abstract text is available yet for this article.
July 2016: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/28490888/maintenance-therapy-with-all-trans-retinoic-acid-and-arsenic-trioxide-improves-relapse-free-survival-in-adults-with-low-to-intermediate-risk-acute-promyelocytic-leukemia-who-have-achieved-complete-remission-after-consolidation-therapy
#19
Bin Liang, Zhouyi Zheng, Yifen Shi, Jingjing Chen, Xudong Hu, Honglan Qian, Zhijian Shen, Songfu Jiang, Kang Yu, Jianhua Feng
BACKGROUND: Currently, the optimal maintenance therapy for patients with acute promyelocytic leukemia (APL) who have achieved complete remission (CR) after completing consolidation chemotherapy remains controversial. The comparative effectiveness of the all-trans retinoic acid (ATRA) plus arsenic trioxide (As2O3) maintenance strategy with classic ATRA plus chemotherapy has not been evaluated. In this study, we compared the efficacy and toxicity of maintenance therapy with ATRA plus As2O3 and classic ATRA plus chemotherapy in low- to intermediate-risk APL patients reaching the first CR after induction and consolidation therapy...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28490186/two-dimensional-quantitative-structure-activity-relationship-study-of-1-4-naphthoquinone-derivatives-tested-against-hl-60-human-promyelocytic-leukaemia-cells
#20
M C A Costa, M M C Ferreira
A series of 50 derivatives of 1,4-naphthoquinone tested against human HL-60 leukaemic cells showed activity at a wide range of concentrations. A multivariate quantitative structure-activity relationship (QSAR) study of 45 compounds was performed through principal component analysis (PCA) and partial least squares (PLS) regression. A good PLS regression model was obtained with two factors describing 60.1% of the total variance, and the selected descriptors were partial atomic charge at carbons 1 and 10 (C1 and C10) and total dipole moment (DIP)...
May 11, 2017: SAR and QSAR in Environmental Research
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