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https://www.readbyqxmd.com/read/29161028/exploring-the-active-centre-of-lsd1-corest-complex-by-molecular-dynamics-simulation-utilizing-its-co-crystallized-cofactor-tetrahydrofolate-as-a-probe
#1
Waleed A A Zalloum, Hiba M Zalloum
Epigenetic targeting of cancer is a recent era to manipulate the gene without destroying the genetic material. Lysine-specific demethylase 1 (LSD1) is one of the enzymes associated with the chromatin for post-translational modifications, where it demethylates lysine amino acid in the chromatin H3 tail. Many studies showed that inhibiting LSD1 could potentially be used to treat cancer epigenetically. LSD1 is associated with its corepressor protein CoREST, and uses tetrahydrofolate as a cofactor to accept CH2 from the demethylation process...
November 21, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/29159826/pharmacological-and-molecular-approaches-for-the-treatment-of-%C3%AE-hemoglobin-disorders
#2
REVIEW
Neelam Lohani, Nupur Bhargava, Anjana Munshi, Sivaprakash Ramalingam
β-hemoglobin disorders, such as β-thalassemia and sickle cell anemia are among the most prevalent inherited genetic disorders worldwide. These disorders are caused by mutations in the gene encoding hemoglobin-β (HBB), a vital protein found in red blood cells (RBCs) that carries oxygen from lungs to all parts of the human body. As a consequence, there has been an enduring interest in this field in formulating therapeutic strategies for the treatment of these diseases. Currently, there is no cure available for hemoglobin disorders, although, some patients have been treated with bone marrow transplantation, whose scope is limited because of the difficulty in finding a histocompatible donor and also due to transplant-associated clinical complications that can arise during the treatment...
November 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29156705/upregulation-of-cd11b-and-cd86-through-lsd1-inhibition-promotes-myeloid-differentiation-and-suppresses-cell-proliferation-in-human-monocytic-leukemia-cells
#3
Jianwu Fang, Haiyan Ying, Ting Mao, Yanjia Fang, Yuan Lu, He Wang, Irene Zang, Zhaofu Wang, Ying Lin, Mengxi Zhao, Xiao Luo, Zongyao Wang, Yan Zhang, Chao Zhang, Wei Xiao, Yan Wang, Wei Tan, Zhui Chen, Chris Lu, Peter Atadja, En Li, Kehao Zhao, Jianfeng Liu, Justin Gu
LSD1 (Lysine Specific Demethylase1)/KDM1A (Lysine Demethylase 1A), a flavin adenine dinucleotide (FAD)-dependent histone H3K4/K9 demethylase, sustains oncogenic potential of leukemia stem cells in primary human leukemia cells. However, the pro-differentiation and anti-proliferation effects of LSD1 inhibition in acute myeloid leukemia (AML) are not yet fully understood. Here, we report that small hairpin RNA (shRNA) mediated LSD1 inhibition causes a remarkable transcriptional activation of myeloid lineage marker genes (CD11b/ITGAM and CD86), reduction of cell proliferation and decrease of clonogenic ability of human AML cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156520/long-noncoding-rna-linc00961-inhibits-cell-invasion-and-metastasis-in-human-non-small-cell-lung-cancer
#4
Bin Jiang, Jing Liu, Yu-Hong Zhang, Dong Shen, Shaoping Liu, Feng Lin, Jun Su, Qing-Feng Lin, Shuai Yan, Yong Li, Wei-Dong Mao, Zhi-Li Liu
Long noncoding RNAs (LncRNAs) expression has been found to be misregulated in multiple human cancers, and a growing number of studies have revealed that lncRNAs can function as important oncogenes or tumor suppressors. In this study, we identified a lncRNA-LINC00961, which was significantly down-regulated in human non-small cell lung cancer tissues. Decreased LINC00961 was associated with NSCLC patients advanced clinical stage, lymph node metastasis, and shorter survival time. Further experiments demonstrated that LSD1 could directly bind to LINC00961 promoter regions and epigenetically repress its transcription in NSCLC cells...
November 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29152043/lysine-specific-demethylase-1-lsd1-inhibitors-as-potential-treatment-for-different-types-of-cancers
#5
EDITORIAL
Ahmed F Abdel-Magid
No abstract text is available yet for this article.
November 9, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29137219/functional-characterization-of-lysine-specific-demethylase-2-lsd2-kdm1b-in-breast-cancer-progression
#6
Lin Chen, Shauna N Vasilatos, Ye Qin, Tiffany A Katz, Chunyu Cao, Hao Wu, Nilgun Tasdemir, Kevin M Levine, Steffi Oesterreich, Nancy E Davidson, Yi Huang
Flavin-dependent histone demethylases govern histone H3K4 methylation and act as important chromatin modulators that are extensively involved in regulation of DNA replication, gene transcription, DNA repair, and heterochromatin gene silencing. While the activities of lysine-specific demethylase 1 (LSD1/KDM1A) in facilitating breast cancer progression have been well characterized, the roles of its homolog LSD2 (KDM1B) in breast oncogenesis are relatively less understood. In this study, we showed that LSD2 protein level was significantly elevated in malignant breast cell lines compared with normal breast epithelial cell line...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29104258/epigenetic-regulatory-mechanisms-induced-by-resveratrol
#7
REVIEW
Guilherme Felipe Santos Fernandes, Gabriel Dalio Bernardes Silva, Aline Renata Pavan, Diego Eidy Chiba, Chung Man Chin, Jean Leandro Dos Santos
Resveratrol (RVT) is one of the main natural compounds studied worldwide due to its potential therapeutic use in the treatment of many diseases, including cancer, diabetes, cardiovascular diseases, neurodegenerative diseases and metabolic disorders. Nevertheless, the mechanism of action of RVT in all of these conditions is not completely understood, as it can modify not only biochemical pathways but also epigenetic mechanisms. In this paper, we analyze the biological activities exhibited by RVT with a focus on the epigenetic mechanisms, especially those related to DNA methyltransferase (DNMT), histone deacetylase (HDAC) and lysine-specific demethylase-1 (LSD1)...
November 1, 2017: Nutrients
https://www.readbyqxmd.com/read/29098080/methylation-of-transcription-factor-yy2-regulates-its-transcriptional-activity-and-cell-proliferation
#8
Xiao-Nan Wu, Tao-Tao Shi, Yao-Hui He, Fei-Fei Wang, Rui Sang, Jian-Cheng Ding, Wen-Juan Zhang, Xing-Yi Shu, Hai-Feng Shen, Jia Yi, Xiang Gao, Wen Liu
Yin Yang 1 (YY1) is a multifunctional DNA-binding transcription factor shown to be critical in a variety of biological processes, and its activity and function have been shown to be regulated by multitude of mechanisms, which include but are not limited to post-translational modifications (PTMs), its associated proteins and cellular localization. YY2, the paralog of YY1 in mouse and human, has been proposed to function redundantly or oppositely in a context-specific manner compared with YY1. Despite its functional importance, how YY2's DNA-binding activity and function are regulated, particularly by PTMs, remains completely unknown...
2017: Cell Discovery
https://www.readbyqxmd.com/read/29075615/pharmacologic-targeting-of-chromatin-modulators-as-therapeutics-of-acute-myeloid-leukemia
#9
REVIEW
Rui Lu, Gang Greg Wang
Acute myeloid leukemia (AML), a common hematological cancer of myeloid lineage cells, generally exhibits poor prognosis in the clinic and demands new treatment options. Recently, direct sequencing of samples from human AMLs and pre-leukemic diseases has unveiled their mutational landscapes and significantly advanced the molecular understanding of AML pathogenesis. The newly identified recurrent mutations frequently "hit" genes encoding epigenetic modulators, a wide range of chromatin-modifying enzymes and regulatory factors involved in gene expression regulation, supporting aberration of chromatin structure and epigenetic modification as a main oncogenic mechanism and cancer-initiating event...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29070103/-knockout-of-lsd1-gene-by-crispr-cas9-system-significantly-inhibited-proliferation-and-expression-of-cd235a-in-k562-cells
#10
Jie Gao, Si-Rui Ren, Bing-Rui Wang, Qing Guo, Tian-Tian Feng, Ding Wang, Jin-Hua Liu, Jing-Yuan Tong, Li-Hong Shi
OBJECTIVE: To study the effect of LSD1 knock-out on human chronic myeloid leukemia cells(K562 cells). METHODS: The LSD1 gene in K562 cells was knocked-out specifically by using CRISPR/Cas9 system, the single cells were gained by flow cytometric sorting technique, the LSD1(+/-) and LSD1(-/-) cell lines were gained after amplificantion and culture, identification of Western blot and sequencing. The MTS assay was used to detect the effect of LSD1 knockout on the proliferation of K562 cells, the flow cytometry was used to examine the expression of K562 cell surface marker after LSD1 knockout...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29069576/novel-combination-of-histone-methylation-modulators-with-therapeutic-synergy-against-acute-myeloid-leukemia-in%C3%A2-vitro-and-in%C3%A2-vivo
#11
Shijun Wen, Jiankang Wang, Panpan Liu, Yiqing Li, Wenhua Lu, Yumin Hu, Jinyun Liu, Zhiyuan He, Peng Huang
Acute myeloid leukemia (AML) is a hematological malignancy with rapid disease progression and often becomes lethal without treatment. Development of effective new therapies is essential to improve the clinical outcome of AML patients. Enhancer of zeste homolog 2 (EZH2) and lysine specific demethylase 1 (LSD1) play important roles in epigenetic regulation and their altered expressions have been observed in cancer. Although EZH2 and LSD1 have opposite histone methylation functions, we found that both enzymes were paradoxically up-regulated in AML cells...
October 22, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29042275/basil-polysaccharide-attenuates-hepatocellular-carcinoma-metastasis-in-rat-by-suppressing-h3k9me2-histone-methylation-under-hepatic-artery-ligation-induced-hypoxia
#12
Bing Feng, Ying Zhu, Zuqing Su, Lipeng Tang, Chaoyue Sun, Caiyun Li, Guangjuan Zheng
Hepatocellular carcinoma (HCC) is one of the most common and fatal cancers in the world. Tumor metastasis is an important factor of poor prognosis in patients with HCC. Tumor hypoxia can promote tumor cell metastasis in HCC. Epigenetic modification is closely related to tumor hypoxia and metastasis. In our previous research, we found that basil polysaccharide suppressed migration and invasion of HCC cell by inhibiting hypoxia induced histone methylation in vitro. In the present study, we investigated the effect of basil polysaccharide on the walker 256 carcinoma cell metastasis in rat...
October 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29037950/discovery-of-tranylcypromine-analogs-with-an-acylhydrazone-substituent-as-lsd1-inactivators-design-synthesis-and-their-biological-evaluation
#13
Kai Sun, Jia-Di Peng, Feng-Zhi Suo, Ting Zhang, Yun-Dong Fu, Yi-Chao Zheng, Hong-Min Liu
Lysine specific demethylase 1 (LSD1), the first identified histone demethylase, plays an important role in epigenetic regulation of gene activation and repression, has been reported to be up-regulated and involved in numbers of solid malignant tumors. In this study, we identified a series of phenylalanyl hydrazones based LSD1 inhibitors, and the most potent one, compound 4q, can inactivate LSD1 with IC50 = 91.83 nM. In cellular level, compound 4q can induce the accumulation of CD86 as well as H3K4me2, and inhibit gastric cancer cell proliferation by inactivating LSD1...
November 15, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29031059/tying-up-tranylcypromine-novel-selective-histone-lysine-specific-demethylase-1-lsd1-inhibitors
#14
Yue-Yang Ji, Sen-Dong Lin, Yu-Jie Wang, Ming-Bo Su, Wei Zhang, Hendra Gunosewoyo, Fan Yang, Jia Li, Jie Tang, Yu-Bo Zhou, Li-Fang Yu
Aberrant expression of lysine specific histone demethylase 1 (LSD1) has been increasingly associated with numerous cancer cells and several proof-of-concept studies are strongly suggestive of its potential as a druggable target. Tranylcypromine (TCP) is an antidepressant originally known to target the monoamine oxidases A and B (MAO-A and MAO-B), which are structurally related to LSD1. A number of TCP derivatives have been identified as potent LSD1 inhibitors, with a handful of them currently being tested in clinical trials...
December 1, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29030483/rbpj-cbf1-interacts-with-l3mbtl3-mbt1-to-promote-repression-of-notch-signaling-via-histone-demethylase-kdm1a-lsd1
#15
Tao Xu, Sung-Soo Park, Benedetto Daniele Giaimo, Daniel Hall, Francesca Ferrante, Diana M Ho, Kazuya Hori, Lucas Anhezini, Iris Ertl, Marek Bartkuhn, Honglai Zhang, Eléna Milon, Kimberly Ha, Kevin P Conlon, Rork Kuick, Brandon Govindarajoo, Yang Zhang, Yuqing Sun, Yali Dou, Venkatesha Basrur, Kojo Sj Elenitoba-Johnson, Alexey I Nesvizhskii, Julian Ceron, Cheng-Yu Lee, Tilman Borggrefe, Rhett A Kovall, Jean-François Rual
Notch signaling is an evolutionarily conserved signal transduction pathway that is essential for metazoan development. Upon ligand binding, the Notch intracellular domain (NOTCH ICD) translocates into the nucleus and forms a complex with the transcription factor RBPJ (also known as CBF1 or CSL) to activate expression of Notch target genes. In the absence of a Notch signal, RBPJ acts as a transcriptional repressor. Using a proteomic approach, we identified L3MBTL3 (also known as MBT1) as a novel RBPJ interactor...
November 2, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28993646/lsd1-protects-against-hippocampal-and-cortical-neurodegeneration
#16
Michael A Christopher, Dexter A Myrick, Benjamin G Barwick, Amanda K Engstrom, Kirsten A Porter-Stransky, Jeremy M Boss, David Weinshenker, Allan I Levey, David J Katz
To investigate the mechanisms that maintain differentiated cells, here we inducibly delete the histone demethylase LSD1/KDM1A in adult mice. Loss of LSD1 leads to paralysis, along with widespread hippocampus and cortex neurodegeneration, and learning and memory defects. We focus on the hippocampus neuronal cell death, as well as the potential link between LSD1 and human neurodegenerative disease and find that loss of LSD1 induces transcription changes in common neurodegeneration pathways, along with the re-activation of stem cell genes, in the degenerating hippocampus...
October 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28991226/lsd1-promotes-s-phase-entry-and-tumorigenesis-via-chromatin-co-occupation-with-e2f1-and-selective-h3k9-demethylation
#17
Y He, Y Zhao, L Wang, L R Bohrer, Y Pan, L Wang, H Huang
Histone H3 lysine-9 (H3K9) methylation is essential for retinoblastoma protein (RB)-mediated heterochromatin formation, epigenetic silencing of S-phase genes and permanent cell cycle arrest or cellular senescence. Besides as an H3K4 demethylase, lysine-specific demethylase-1 (LSD1) has been shown to promote H3K9 demethylation. However, it is unexplored whether LSD1 has a causal role in regulating cell cycle entry and senescence. Here we demonstrate that genetic depletion or pharmacological inhibition of LSD1 triggers G1 arrest and cellular senescence...
October 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28987602/design-and-synthesis-of-tranylcypromine-derivatives-as-novel-lsd1-hdacs-dual-inhibitors-for-cancer-treatment
#18
Ying-Chao Duan, Yong-Cheng Ma, Wen-Ping Qin, Li-Na Ding, Yi-Chao Zheng, Ying-Li Zhu, Xiao-Yu Zhai, Jing Yang, Chao-Ya Ma, Yuan-Yuan Guan
Lysine specific demethylase 1 (LSD1) and Histone deacetylases (HDACs) are promising drug targets for cancers. Recent studies reveal an important functional interplay between LSD1 and HDACs, and there is evidence for the synergistic effect of combined LSD1 and HDAC inhibitors on cancers. Therefore, development of inhibitors targeting both LSD1 and HDACs might be a promising strategy for epigenetic therapy of cancers. We report herein the synthesis of a series of tranylcypromine derivatives as LSD1/HDACs dual inhibitors...
November 10, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28974232/the-stem-cell-factor-sall4-is-an-essential-transcriptional-regulator-in-mixed-lineage-leukemia-rearranged-leukemogenesis
#19
Lina Yang, Li Liu, Hong Gao, Jaya Pratap Pinnamaneni, Deepthi Sanagasetti, Vivek P Singh, Kai Wang, Megumi Mathison, Qianzi Zhang, Fengju Chen, Qianxing Mo, Todd Rosengart, Jianchang Yang
BACKGROUND: The stem cell factor spalt-like transcription factor 4 (SALL4) plays important roles in normal hematopoiesis and also in leukemogenesis. We previously reported that SALL4 exerts its effect by recruiting important epigenetic factors such as DNA methyltransferases DNMT1 and lysine-specific demethylase 1 (LSD1/KDM1A). Both of these proteins are critically involved in mixed lineage leukemia (MLL)-rearranged (MLL-r) leukemia, which has a very poor clinical prognosis. Recently, SALL4 has been further linked to the functions of MLL and its target gene homeobox A9 (HOXA9)...
October 3, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28965964/gli1-is-a-potential-cancer-stem-cell-marker-and-predicts-poor-prognosis-in-ductal-breast-carcinoma
#20
Weidong Ni, Zhaoting Yang, Wenbo Qi, Chunai Cui, Yan Cui, Yanhua Xuan
Glioma-associated oncogene homolog 1 (Gli1) maintains the cancer stem cell-like characteristics in various tumors. However, its expression in cancer stem cells (CSC) in ductal breast carcinoma has not been well studied. We aimed to characterize Gli1 as a potential CSC marker and investigate its clinical significance in ductal breast carcinoma. Immunohistochemical staining was used to study the relationship of Gli1 to clinicopathologic features, cell cycle regulation-related genes, and CSC markers. Gli1 was expressed to a greater extent in ductal breast carcinoma than in normal breast tissues (P=...
September 28, 2017: Human Pathology
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