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https://www.readbyqxmd.com/read/29713188/mir-30a-suppresses-osteosarcoma-proliferation-and-metastasis-by-downregulating-mef2d-expression
#1
Liuxue Du, Tianpei Chen, Kai Zhao, Dong Yang
Many studies have revealed that microRNAs (miRNAs) play crucial roles in cancer development and progression. miRNA-30a (miR-30a), as a member of the miR-30 family, has been implicated in various cancers. However, the role of miR-30a in osteosarcoma remains unclear. In the current study, we found that miR-30a was significantly downregulated in osteosarcoma tissues and cell lines by using quantitative real-time polymerase chain reaction (qRT-PCR). In addition, miR-30a could inhibit cancer cell growth, migration, and invasion in vitro...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29668032/presence-of-meniscus-tear-alters-gene-expression-profile-of-anterior-cruciate-ligament-tears
#2
Robert H Brophy, Marcus A Rothermich, Eric D Tycksen, Lei Cai, Muhammad Farooq Rai
Anterior cruciate ligament (ACL) tears occur in isolation or in tandem with other intra-articular injuries such as meniscus tears. The impact of injury pattern on the molecular biology of the injured ACL is unknown. Here, we tested the hypothesis that the biological response of the ACL to injury varies based on the presence or absence of concomitant meniscus tear. We performed RNA-seq on 28 ACL tears remnants (12 isolated, 16 combined). In total, 16,654 transcripts were differentially-expressed between isolated and combined injury groups at false-discovery-rate of 0...
April 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29408457/the-pathogenic-role-of-mef2d-ss18-fusion-gene-in-b-cell-acute-lymphoblastic-leukemia
#3
Ming Zhang, Dongdong Mao, Weina Zhang
B-cell acute lymphoblastic leukemia (B-ALL) is characterized by various fusion genes resulted from chromosome translocations, and MEF2D related fusions are recently identified in a B-ALL subtype with relatively worse survival. In this study, we investigated the pathogenic role of MEF2D-SS18 fusion in B-ALL. The recombinant retrovirus and lentivirus plasmids containing the MEF2D-SS18 transcript were constructed for functional studies. Immuno-fluorescent staining presented the nuclear localization of MEF2D-SS18...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29344185/downregulation-of-mir-30a-is-associated-with-proliferation-and-invasion-via-targeting-mef2d-in-cervical-cancer
#4
Jing Zhao, Bo Li, Chuqiang Shu, Yun Ma, Yingping Gong
Accumulating studies have revealed that microRNAs serve crucial roles in cancer development and progression. MicroRNA-30a (miR-30a) has been implicated in various cancer types. However, the role of miR-30a in cervical cancer remains unclear. In the current study, a reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assay revealed that miR-30a was significantly downregulated in cervical cancer tissues compared with adjacent normal tissues, and in the cervical cancer cell lines HeLa, SiHa and Ca-Ski compared with GH329 normal cervical epithelial cells...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29218083/overexpression-and-biological-function-of-mef2d-in-human-pancreatic-cancer
#5
Zhiwang Song, Chan Feng, Yonglin Lu, Yong Gao, Yun Lin, Chunyan Dong
To explore the expression, clinical significance, biological function, and potential mechanism of MEF2D in pancreatic cancer, the expression of MEF2D in human pancreatic cancer tissues and corresponding adjacent normal tissues was analyzed through immunohistochemical staining. The association between MEF2D expression, clinicopathological parameters, overall survival, and disease-free survival was evaluated. Human pancreatic cancer cell lines BxPC-1 and SW1990 were selected to investigate the effect of MEF2D knockdown on cell proliferation, migration, and invasion...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29190899/targeting-myocyte-specific-enhancer-factor-2d-contributes-to-the-suppression-of-cardiac-hypertrophic-growth-by-mir-92b-3p-in-mice
#6
Zhi-Qin Hu, Jian-Fang Luo, Xue-Ju Yu, Jie-Ning Zhu, Lei Huang, Jing Yang, Yong-Heng Fu, Tao Li, Yu-Mei Xue, Ying-Qing Feng, Zhi-Xin Shan
The role of microRNA-92b-3p (miR-92b-3p) in cardiac hypertrophy was not well illustrated. The present study aimed to investigate the expression and potential target of miR-92b-3p in angiotensin II (Ang-II)-induced mouse cardiac hypertrophy. MiR-92b-3p was markedly decreased in the myocardium of Ang-II-infused mice and of patients with cardiac hypertrophy. However, miR-92b-3p expression was revealed increased in Ang-II-induced neonatal mouse cardiomyocytes. Cardiac hypertrophy was shown attenuated in Ang-II-infused mice received tail vein injection of miR-92b-3p mimic...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29127222/mef2-transcription-factors-in-human-placenta-and-involvement-in-cytotrophoblast-invasion-and-differentiation
#7
Lucy Li, Lewis P Rubin, Xiaoming Gong
Development of the human placenta and its trophoblast cell types is critical for a successful pregnancy. Defects in trophoblast invasion and differentiation are associated with adverse pregnancy outcomes, including preeclampsia. The members of myocyte enhancer factor-2 (MEF2) family of transcription factors are key regulators of cellular proliferation, differentiation, and invasion in various cell types and tissues and might play a similarly important role in regulating trophoblast proliferation, invasion, and differentiation during human placental development...
January 1, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29118903/mir-665-regulates-vsmcs-proliferation-via-targeting-fgf9-and-mef2d-and-modulating-activities-of-wnt-%C3%AE-catenin-signaling
#8
Kai Li, Jin Pan, Jianjun Wang, Fengrui Liu, Li Wang
Abnormal proliferation of vascular smooth muscle cells (VSMCs) contributes to the development of cardiovascular diseases. Studies have showed the great impact of microRNAs (miRNAs) on the cell proliferation in VSMCs. This study examined the in vitro functional roles of miR-665 in the VSMCs and explored the underlying molecular mechanisms. The mRNA and protein expression levels were determined by qRT-PCR and western blot assays, respectively. CCK-8, transwell invasion and wound healing assays were performed to measure VSMCs proliferation, invasion and migration, respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29029385/analyses-of-germline-variants-associated-with-ovarian-cancer-survival-identify-functional-candidates-at-the-1q22-and-19p12-outcome-loci
#9
Dylan M Glubb, Sharon E Johnatty, Michael C J Quinn, Tracy A O'Mara, Jonathan P Tyrer, Bo Gao, Peter A Fasching, Matthias W Beckmann, Diether Lambrechts, Ignace Vergote, Digna R Velez Edwards, Alicia Beeghly-Fadiel, Javier Benitez, Maria J Garcia, Marc T Goodman, Pamela J Thompson, Thilo Dörk, Matthias Dürst, Francesmary Modungo, Kirsten Moysich, Florian Heitz, Andreas du Bois, Jacobus Pfisterer, Peter Hillemanns, Beth Y Karlan, Jenny Lester, Ellen L Goode, Julie M Cunningham, Stacey J Winham, Melissa C Larson, Bryan M McCauley, Susanne Krüger Kjær, Allan Jensen, Joellen M Schildkraut, Andrew Berchuck, Daniel W Cramer, Kathryn L Terry, Helga B Salvesen, Line Bjorge, Penny M Webb, Peter Grant, Tanja Pejovic, Melissa Moffitt, Claus K Hogdall, Estrid Hogdall, James Paul, Rosalind Glasspool, Marcus Bernardini, Alicia Tone, David Huntsman, Michelle Woo, Aocs Group, Anna deFazio, Catherine J Kennedy, Paul D P Pharoah, Stuart MacGregor, Georgia Chenevix-Trench
We previously identified associations with ovarian cancer outcome at five genetic loci. To identify putatively causal genetic variants and target genes, we prioritized two ovarian outcome loci (1q22 and 19p12) for further study. Bioinformatic and functional genetic analyses indicated that MEF2D and ZNF100 are targets of candidate outcome variants at 1q22 and 19p12, respectively. At 19p12, the chromatin interaction of a putative regulatory element with the ZNF100 promoter region correlated with candidate outcome variants...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28978861/acute-leukemia-in-adolescents-and-young-adults
#10
Daisuke Tomizawa
Both acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML) are common malignant diseases in adolescents and young adults (AYAs). Recent advances in genomic studies have helped us understand the biological nature of acute leukemia in AYAs; higher frequency of Ph-like ALL and rearrangements in DUX4, ERG, MEF2D, and ZNF384 genes in AYAs with ALL and higher frequency of FLT3-ITD, NPM1, IDH1/2, DNMT3A, ASXL1, TET2, and CEBPA mutations in AYAs with AML than that in children. The pediatric-inspired regimen has become a standard treatment approach for AYAs with ALL, but optimal treatment strategy for AYAs with AML is not yet established to date...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28883266/acute-lymphoblastic-leukemia-of-adolescents-and-young-adults-from-the-viewpoint-of-physicians
#11
Takahiko Yasuda, Fumihiko Hayakawa
Fusion genes found in cases of acute lymphoblastic leukemia (ALL) are reported to be associated with age, such as MLL rearrangements in neonates and BCR-ABL1 in adults. However, the pathogenesis of ALL in adolescents and young adults (AYA) remains largely unknown. To investigate the potential role of fusion genes, we performed RNA-sequencing on 73 BCR-ABL1-negative ALL patients who were all AYA. Interestingly, DUX4-IGH was the most frequent fusion gene detected in B-ALL (18.5%) and was preferentially detected in the AYA generation...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28822748/an-integrated-approach-to-identify-critical-transcription-factors-in-the-protection-against-hydrogen-peroxide-induced-oxidative-stress-by-danhong-injection
#12
Jingjing Zhang, Feifei Guo, Junying Wei, Minghua Xian, Shihuan Tang, Ye Zhao, Mingwei Liu, Lei Song, Ya Geng, Hongjun Yang, Chen Ding, Luqi Huang
Oxidative stress plays a vital role in many pathological processes of the cardiovascular diseases. However, the underlying mechanism remains unclear, especially on a transcription factor (TF) level. In this study, a new method, concatenated tandem array of consensus transcription factor response elements (catTFREs), and an Illumina-based RNA-seq technology were integrated to systematically investigate the role of TFs in hydrogen peroxide (H2O2)-induced oxidative stress in cardiomyocytes; the damage was then rescued by Danhong injection (DHI), a Chinese standardized product approved for cardiovascular diseases treatment...
August 16, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28820076/a-novel-danshensu-tetramethylpyrazine-conjugate-dt-018-provides-cardioprotection-by-preserving-mitochondrial-function-through-the-mef2d-pgc-1%C3%AE-pathway
#13
Xiaojing Zhang, Jingxiong Luo, Yali Huang, Huixing Deng, Huihui Hu, Pei Yu, Yewei Sun, Luchen Shan, Yuqiang Wang
In this work, we explored the protective effect of DT-018, a danshensu and tetramethylpyrazine conjugate, on mitochondrial injury induced by tert-butylhydroperoxide (t-BHP) and its possible mechanisms of action. DT-018 effectively quenched intracellular and mitochondrial reactive oxygen species (ROS), preserved the mitochondrial function, restored the intracellular level of ATP and augmented mitochondrial membrane potential (Δψm) while suppressed mitochondrial swelling in isolated myocardial mitochondria...
February 12, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28807675/substantial-protection-against-mptp-associated-parkinson-s-neurotoxicity-in-vitro-and-in-vivo-by-anti-cancer-agent-su4312-via-activation-of-mef2d-and-inhibition-of-mao-b
#14
Baojian Guo, Shengquan Hu, Chengyou Zheng, Hongyu Wang, Fangcheng Luo, Haitao Li, Wei Cui, Xifei Yang, Guozhen Cui, Shinghung Mak, Tony Chung-Lit Choi, Edmond Dik-Lung Ma, Yuqiang Wang, Simon Ming Yuen Lee, Zaijun Zhang, Yifan Han
We have previously demonstrated the unexpected neuroprotection of the anti-cancer agent SU4312 in cellular models associated with Parkinson's disease (PD). However, the precise mechanisms underlying its neuroprotection are still unknown, and the effects of SU4312 on rodent models of PD have not been characterized. In the current study, we found that the protection of SU4312 against 1-methyl-4-phenylpyridinium ion (MPP+ )-induced neurotoxicity in PC12 cells was achieved through the activation of transcription factor myocyte enhancer factor 2D (MEF2D), as evidenced by the fact that SU4312 stimulated myocyte enhancer factor 2 (MEF2) transcriptional activity and prevented the inhibition of MEF2D protein expression caused by MPP+ , and that short hairpin RNA (ShRNA)-mediated knockdown of MEF2D significantly abolished the neuroprotection of SU4312...
November 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28775333/dual-specificity-tyrosine-phosphorylation-regulated-kinase-1a-gene-transcription-is-regulated-by-myocyte-enhancer-factor-2d
#15
Pin Wang, Luanluan Wang, Long Chen, Xiulian Sun
Dual-specificity tyrosine-phosphorylation regulated kinase 1A (DYRK1A) is localized in the Down syndrome critical region of chromosome 21. As a candidate gene responsible for learning defects associated with Down syndrome and Alzheimer's disease (AD), DYRK1A has been implied to play pivotal roles in cell proliferation and brain development. MEF2D, a member of the myocyte-specific enhancer factor 2 (MEF2) family of transcription factors, was proved to be in control of neuronal cell differentiation and development...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738418/molecular-pathway-to-protection-from-age-dependent-photoreceptor-degeneration-in-mef2-deficiency
#16
Saumya Nagar, Dorit Trudler, Scott R McKercher, Juan Piña-Crespo, Nobuki Nakanishi, Shu-Ichi Okamoto, Stuart A Lipton
Purpose: Photoreceptor degeneration in the retina is a major cause of blindness in humans. Elucidating mechanisms of degenerative and neuroprotective pathways in photoreceptors should afford identification and development of therapeutic strategies. Methods: We used mouse genetic models and improved methods for retinal explant cultures. Retinas were enucleated from Mef2d+/+ and Mef2d-/- mice, stained for MEF2 proteins and outer nuclear layer thickness, and assayed for apoptotic cells...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28644137/analyses-of-germline-variants-associated-with-ovarian-cancer-survival-identify-functional-candidates-at-the-1q22-and-19p12-outcome-loci
#17
Dylan M Glubb, Sharon E Johnatty, Michael C J Quinn, Tracy A O'Mara, Jonathan P Tyrer, Bo Gao, Peter A Fasching, Matthias W Beckmann, Diether Lambrechts, Ignace Vergote, Digna R Velez Edwards, Alicia Beeghly-Fadiel, Javier Benitez, Maria J Garcia, Marc T Goodman, Pamela J Thompson, Thilo Dörk, Matthias Dürst, Francesmary Modungo, Kirsten Moysich, Florian Heitz, Andreas du Bois, Jacobus Pfisterer, Peter Hillemanns, Beth Y Karlan, Jenny Lester, Ellen L Goode, Julie M Cunningham, Stacey J Winham, Melissa C Larson, Bryan M McCauley, Susanne Krüger Kjær, Allan Jensen, Joellen M Schildkraut, Andrew Berchuck, Daniel W Cramer, Kathryn L Terry, Helga B Salvesen, Line Bjorge, Penny M Webb, Peter Grant, Tanja Pejovic, Melissa Moffitt, Claus K Hogdall, Estrid Hogdall, James Paul, Rosalind Glasspool, Marcus Bernardini, Alicia Tone, David Huntsman, Michelle Woo, Aocs Group, Anna deFazio, Catherine J Kennedy, Paul D P Pharoah, Stuart MacGregor, Georgia Chenevix-Trench
We previously identified associations with ovarian cancer outcome at five genetic loci. To identify putatively causal genetic variants and target genes, we prioritized two ovarian outcome loci (1q22 and 19p12) for further study. Bioinformatic and functional genetic analyses indicated that MEF2D and ZNF100 are targets of candidate outcome variants at 1q22 and 19p12, respectively. At 19p12, the chromatin interaction of a putative regulatory element with the ZNF100 promoter region correlated with candidate outcome variants...
June 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28498474/effect-of-mir-1244-on-cisplatin-treated-non-small-cell-lung-cancer-via-mef2d-expression
#18
Guang-Jian Li, Guang-Qiang Zhao, Jia-Peng Yang, Yong-Chun Zhou, Kai-Yun Yang, Yu-Jie Lei, Yun-Chao Huang
The aim of this study was to investigate the function of miR-1244 in cisplatin-treated non-small cell lung cancer (NSCLC). The results of quantitative PCR analysis revealed that the expression levels of miR-1244 in cisplatin‑treated A549 and NCI-H522 human lung cancer cell lines were lower than those in untreated A549 and NCI-H522 cells. Similarly, the expression level of miR-1244 in NSCLC tissue samples from cisplatin-treated patients was also lower than that in non-cisplatin-treated NSCLC patients. Notably, the overall survival times of cisplatin-treated NSCLC patients with high miR-1244 expression were superior to those patients with low miR-1244 expression...
June 2017: Oncology Reports
https://www.readbyqxmd.com/read/28480592/slow-myofiber-commitment-by-semaphorin-3a-secreted-from-myogenic-stem-cells
#19
Ryuichi Tatsumi, Takahiro Suzuki, Mai-Khoi Q Do, Yuki Ohya, Judy E Anderson, Ayumi Shibata, Mai Kawaguchi, Shunpei Ohya, Hideaki Ohtsubo, Wataru Mizunoya, Shoko Sawano, Yusuke Komiya, Riho Ichitsubo, Koichi Ojima, Shin-Ichiro Nishimatsu, Tsutomu Nohno, Yutaka Ohsawa, Yoshihide Sunada, Mako Nakamura, Mitsuhiro Furuse, Yoshihide Ikeuchi, Takanori Nishimura, Takeshi Yagi, Ronald E Allen
Recently, we found that resident myogenic stem satellite cells upregulate a multi-functional secreted protein, semaphorin 3A (Sema3A), exclusively at the early-differentiation phase in response to muscle injury; however, its physiological significance is still unknown. Here we show that Sema3A impacts slow-twitch fiber generation through a signaling pathway, cell-membrane receptor (neuropilin2-plexinA3) → myogenin-myocyte enhancer factor 2D → slow myosin heavy chain. This novel axis was found by small interfering RNA-transfection experiments in myoblast cultures, which also revealed an additional element that Sema3A-neuropilin1/plexinA1, A2 may enhance slow-fiber formation by activating signals that inhibit fast-myosin expression...
May 7, 2017: Stem Cells
https://www.readbyqxmd.com/read/28473466/antagonistic-regulation-of-cell-cycle-and-differentiation-gene-programs-in-neonatal-cardiomyocytes-by-homologous-mef2-transcription-factors
#20
Cody A Desjardins, Francisco J Naya
Cardiomyocytes acquire their primary specialized function (contraction) before exiting the cell cycle. In this regard, proliferation and differentiation must be precisely coordinated for proper cardiac morphogenesis. Here, we have investigated the complex transcriptional mechanisms employed by cardiomyocytes to coordinate antagonistic cell-cycle and differentiation gene programs through the molecular dissection of the core cardiac transcription factor, MEF2. Knockdown of individual MEF2 proteins, MEF2A, -C, and -D, in primary neonatal cardiomyocytes resulted in radically distinct and opposite effects on cellular homeostasis and gene regulation...
June 23, 2017: Journal of Biological Chemistry
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