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https://www.readbyqxmd.com/read/29348845/decreased-expression-of-the-long-non-coding-rna-slc7a11-as1-predicts-poor-prognosis-and-promotes-tumor-growth-in-gastric-cancer
#1
Yajun Luo, Cheng Wang, Peng Yong, Pengcheng Ye, Zilin Liu, Zhiming Fu, Fei Lu, Wanping Xiang, Wang Tan, Jiangwei Xiao
Many lncRNA and mRNA sense-antisense transcripts have been systematically identified in malignant cells. However, the molecular mechanisms of most lncRNA-mRNA pairs in gastric cancer remain largely unknown. We found the gastric cancer-associated lncRNA SLC7A11-AS1 and coding transcript mRNA SLC7A11 in human gastric cancer specimens by microarray. SLC7A11-AS1, antisense to SLC7A11, is significantly down-regulated in gastric cancer and could promote tumor growth in vitro and in vivo. The effects of SLC7A11-AS1 depend on the regulation of SLC7A11 via the ASK1-p38MAPK/JNK signaling pathway...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29341438/natural-antisense-transcripts-in-diseases-from-modes-of-action-to-targeted-therapies
#2
REVIEW
Elżbieta Wanowska, Magdalena Regina Kubiak, Wojciech Rosikiewicz, Izabela Makałowska, Michał Wojciech Szcześniak
Antisense transcription is a widespread phenomenon in mammalian genomes, leading to production of RNAs molecules referred to as natural antisense transcripts (NATs). NATs apply diverse transcriptional and post-transcriptional regulatory mechanisms to carry out a wide variety of biological roles that are important for the normal functioning of living cells, but their dysfunctions can be associated with human diseases. In this review, we attempt to provide a molecular basis for the involvement of NATs in the etiology of human disorders such as cancers and neurodegenerative and cardiovascular diseases...
January 17, 2018: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/29341117/hoxd-as1-mir-130a-sponge-regulates-glioma-development-by-targeting-e2f8
#3
Yinan Chen, Fengbo Zhao, Daming Cui, Rui Jiang, Jian Chen, Qingfeng Huang, Jinlong Shi
Glioma development is an extremely complex process with changes occurring in numerous genes. HOXD antisense growth-associated long non-coding RNA (HOXD-AS1), an important long non-coding RNA (lncRNA), is known to regulate metastasis-related gene expression in bladder cancer, ovarian cancer and neuroblastoma. Here, we elucidated the function and possible molecular mechanisms of lncRNA HOXD-AS1 in human glioma cells. Our results proved that HOXD-AS1 expression was upregulated in glioma tissues and in glioma cell lines...
January 17, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29336659/long-non-coding-rna-hotair-promotes-cervical-cancer-progression-through-regulating-bcl2-via-targeting-mir-143-3p
#4
Mingzhu Liu, Jinying Jia, Xinjie Wang, Yanjie Liu, Chunfang Wang
BACKGROUND: HOX transcript antisense RNA (HOTAIR) is a long non-coding RNA (lncRNA) widely involved in the progression of numerous malignancies. Whereas, the potential molecular mechanism of HOTAIR involved in cervical cancer progression is still needed to be elaborated. METHODS: The expression of HOTAIR and miR-143-3p were detected in cervical cancer tissues and cells by qRT-PCR. MTT and flow cytometry analysis were performed to measure cell proliferation and apoptosis...
January 16, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29335299/hotair-contributes-to-cell-proliferation-and-metastasis-of-cervical-cancer-via-targeting-mir-23b-mapk1-axis
#5
Qin Li, Yanhong Feng, Xu Chao, Shuai Shi, Man Liang, Yumei Qiao, Bin Wang, Pin Wang, Zhenning Zhu
The long non-coding RNA HOX transcript antisense RNA (HOTAIR) has been found overexpressed in many human malignancies and involved in tumor progression and metastasis. Although the downstream target through which HOTAIR modulates tumor metastasis is not well-known, evidence suggests that microRNA23b (miR23b) might be involved in this event. In the present study, the expressions of HOTAIR and miR23b were detected by real-time PCR in 33 paired cervical cancer tissue samples and cervical cell lines. The effects of HOTAIR on the expressions of miR23b and mitogen-activated protein kinase 1 (MAPK1) were studied by overexpression and RNA interference approaches...
January 15, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29332345/correlation-between-mir-19a-inhibition-and-radiosensitivity-in-siha-cervical-cancer-cells
#6
Yina Wang, Yang Wang, Wei Zhong, Kuerban Gulina
PURPOSE: MicroRNAs (miRs) have been implicated in many aspects of tumor cell development and survival, including sensitivity to radiotherapy. In particular, miR-19a regulates the proliferation of cervical cancer cells, but its role in radiosensitivity is not known. Here, we describe the consequence of silencing miR-19a using antisense oligonucleotides (ASO) on the radiosensitivity of human cervical cancer SiHa cells. METHODS: Following transfection with miR-19a-ASO or control-ASO, SiHa cells were exposed to X-rays to determine their proliferation...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29328475/heat-shock-protein-27-knockdown-using-nucleotide%C3%A2-based-therapies-enhances-sensitivity-to-5-fu-chemotherapy-in-sw480-human-colon-cancer-cells
#7
Takehiro Shimada, Masashi Tsuruta, Hirotoshi Hasegawa, Koji Okabayashi, Kohei Shigeta, Takashi Ishida, Yusuke Asada, Hirofumi Suzumura, Kaoru Koishikawa, Shingo Akimoto, Yuko Kitagawa
Heat shock protein 27 (Hsp27) is a chaperone protein of low molecular weight that is produced in response to various stresses and has a cytoprotective function. In the present study we found that there is a strong correlation between sensitivity to 5-fluorouracil (5-FU) and the expression of Hsp27 in colorectal cancer. Apatorsen is an antisense oligonucleotide that targets Hsp27 and has various antitumor effects in some types of cancer, such as bladder and prostate. Although several clinical studies are currently studying apatorsen in many malignancies, to date no promising results have been reported for colorectal cancer...
January 3, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29327301/lncrna-gas8-as1-inhibits-cell-proliferation-through-atg5-mediated-autophagy-in-papillary-thyroid-cancer
#8
Yuan Qin, Wei Sun, Hao Zhang, Ping Zhang, Zhihong Wang, Wenwu Dong, Liang He, Ting Zhang, Liang Shao, Wenqian Zhang, Changhao Wu
PURPOSE: The long non-coding RNA GAS8 antisense RNA 1 (lncRNA GAS8-AS1) is a tumor suppressor in papillary thyroid cancer (PTC), but the mechanisms underlying how GAS8-AS1 regulates PTC biology remain unclear. Here, we evaluated the molecular function of GAS8-AS1 in regulating autophagy in PTC cell lines. METHODS: GAS8-AS1 was overexpressed and knocked down in PTC cell lines by transfecting with expression plasmids or short interfering RNAs (siRNAs). Cell proliferation was evaluated using the Cell Counting Kit-8 (CCK-8)...
January 11, 2018: Endocrine
https://www.readbyqxmd.com/read/29301303/natural-antisense-transcripts-molecular-mechanisms-and-implications-in-breast-cancers
#9
REVIEW
Guillaume Latgé, Christophe Poulet, Vincent Bours, Claire Josse, Guy Jerusalem
Natural antisense transcripts are RNA sequences that can be transcribed from both DNA strands at the same locus but in the opposite direction from the gene transcript. Because strand-specific high-throughput sequencing of the antisense transcriptome has only been available for less than a decade, many natural antisense transcripts were first described as long non-coding RNAs. Although the precise biological roles of natural antisense transcripts are not known yet, an increasing number of studies report their implication in gene expression regulation...
January 2, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29298397/impact-of-hotair-gene-polymorphism-and-environmental-risk-on-oral-cancer
#10
S C Su, M J Hsieh, C W Lin, C Y Chuang, Y F Liu, C M Yeh, S F Yang
Genetic and acquired factors are thought to be interrelated and imperative to estimate the risk and prognosis of oral squamous cell carcinoma (OSCC). HOX transcript antisense intergenic RNA ( HOTAIR) plays crucial roles in gene regulation and is regulated in a variety of cancers. Polymorphisms in HOTAIR have been recently linked to the predisposition to diverse malignancies. In the present study, we aimed to evaluate the influences of HOTAIR gene polymorphisms, combined with environmental triggers, on the susceptibility to oral tumorigenesis...
January 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29289833/long-non-coding-rna-hnf1a-as1-promotes-cell-proliferation-and-invasion-via-regulating-mir-17-5p-in-non-small-cell-lung-cancer
#11
Guoyu Zhang, Xiaokang An, Huiya Zhao, Qingyong Zhang, Hui Zhao
Long non-coding RNA HNF1A-antisense 1 (lncRNA HNF1A-AS1) plays important roles in the progression of human tumors. The aim of this study is to unravel the underlying mechanism of HNF1A-AS1 in non-small cell lung cancer (NSCLC). In the present study, we found that HNF1A-AS1 was upregulation in NSCLC tissues and cell lines. High HNF1A-AS1 expression was associated with patients' advanced TNM stage and lymph node metastasis. Reduced HNF1A-AS1 expression inhibited lung cancer cells proliferation, invasion and increased cells apoptosis rate...
December 27, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29285059/long-noncoding-rna-hotair-promotes-the-proliferation-and-metastasis-of-osteosarcoma-cells-through-the-akt-mtor-signaling-pathway
#12
Enqi Li, Zhe Zhao, Baotong Ma, Jinli Zhang
It has been proven that long non-coding (lnc)RNAs serve an important role in the tumorigenesis and development of several types of human malignancy. Previous studies have demonstrated that the lncRNA Hox transcript antisense intergenic RNA (HOTAIR) is involved in the development various types of cancer, including osteosarcoma (OS). However, the underlying mechanisms by which it has an affect are still largely unknown. In the present study, it was observed that the expression of HOTAIR was significantly upregulated in OS tissues compared to matched adjacent normal tissues, using reverse transcription-quantitative polymerase chain reaction analysis...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29280958/development-of-novel-therapeutic-agents-by-inhibition-of-oncogenic-micrornas
#13
REVIEW
Dinh-Duc Nguyen, Suhwan Chang
MicroRNAs (miRs, miRNAs) are regulatory small noncoding RNAs, with their roles already confirmed to be important for post-transcriptional regulation of gene expression affecting cell physiology and disease development. Upregulation of a cancer-causing miRNA, known as oncogenic miRNA, has been found in many types of cancers and, therefore, represents a potential new class of targets for therapeutic inhibition. Several strategies have been developed in recent years to inhibit oncogenic miRNAs. Among them is a direct approach that targets mature oncogenic miRNA with an antisense sequence known as antimiR, which could be an oligonucleotide or miRNA sponge...
December 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29280214/thorough-in-silico-and-in-vitro-cdna-analysis-of-21-putative-brca1-and-brca2-splice-variants-and-a-complex-tandem-duplication-in-brca2-allowing-the-identification-of-activated-cryptic-splice-donor-sites-in-brca2-exon-11
#14
Annelot Baert, Eva Machackova, Ilse Coene, Carol Cremin, Kristin Turner, Cheryl Portigal-Todd, Marie Jill Asrat, Jennifer Nuk, Allison Mindlin, Young Sean, Andree MacMillan, Tom Van Maerken, Martin Trbusek, Wendy McKinnon, Marie E Wood, William D Foulkes, Marta Santamariña, Miguel de la Hoya, Lenka Foretova, Bruce Poppe, Anne Vral, Toon Rosseel, Kim De Leeneer, Ana Vega, Kathleen B M Claes
For 21 putative BRCA1 and BRCA2 splice site variants the concordance between mRNA analysis and predictions by in silico programs was evaluated. Aberrant splicing was confirmed for 12 alterations. In silico prediction tools were helpful to determine for which variants cDNA analysis is warranted, however, predictions for variants in the Cartegni consensus region but outside the canonical sites, were less reliable. Learning algorithms like Adaboost and Random Forest outperformed the classical tools. Further validations are warranted prior to implement these novel tools in clinical settings...
December 27, 2017: Human Mutation
https://www.readbyqxmd.com/read/29280051/long-non-coding-rna-linc-ror-is-upregulated-in-papillary-thyroid-carcinoma
#15
Ranran Zhang, Heather Hardin, Wei Huang, Darya Buehler, Ricardo V Lloyd
Long non-coding RNAs (lncRNAs) may contribute to carcinogenesis and tumor progression by regulating transcription and gene expression. The role of lncRNAs in the regulation of thyroid cancer progression is being extensively examined. Here, we analyzed three lncRNAs that were overexpressed in papillary thyroid carcinomas, long intergenic non-protein coding RNA, regulator of reprogramming (Linc-ROR, ROR) PVT1 oncogene (PVT1), and HOX transcript antisense intergenic RNA (HOTAIR) to determine their roles in thyroid tumor development and progression...
December 26, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29276973/molecular-and-functional-characterization-of-tumor-induced-factor-tif-hamster-homolog-of-cxcl3-gro%C3%AE-displays-tumor-suppressive-activity
#16
Lili Jin, Zhou-Fang Li, Da-Kui Wang, Meina Sun, Wei Qi, Qiang Ma, Li Zhang, Chun Chu, Elaine Y M Chan, Susanna S T Lee, Helen Wise, Ka-Fai To, Ying Shi, Naiming Zhou, Wing-Tai Cheung
Previously our lab has created a mouse ovarian xenograft model of copy number variation (CNV)-mediated G protein-coupled receptor (GPCR) MAS-driven tumorigenesis, and RNA profiling identified a putative chemokine tumor-induced factor (Tif). Sequence analysis and chemotactic study suggested that Tif was likely to be a hamster homolog of human GROγ (CXCL3) [IJC 125 (2009): 1316-1327]. In the present study, we report the molecular and functional characterization of the Tif gene. Genomic study of CHO-K1 cells indicated that Tif gene consisted of 4 exons, characterized with an antisense B1 element which is embedded in the fourth exon...
December 22, 2017: Cytokine
https://www.readbyqxmd.com/read/29260398/integrated-bioinformatics-analysis-of-potential-biomarkers-for-prostate-cancer
#17
Jiufeng Tan, Xuefei Jin, Kaichen Wang
The aim was to expound the pathogenesis of prostate cancer and to identify the potentially biomarkers for prostate cancer (PC). DNA methylation microarray data GSE38240 containing 8 prostate cancer metastases and 4 normal prostate samples as well as gene expression profile data GSE26910 containing 6 prostate primary tumors and 6 normal samples were used. Differentially expressed genes (DEGs) and differently methylated sites of PC were screened and the regulatory network was constructed with DEGs-related transcription factors (TFs)...
December 19, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29250742/a-randomized-phase-2-study-of-a-hsp27-targeting-antisense-apatorsen-with-prednisone-versus-prednisone-alone-in-patients-with-metastatic-castration-resistant-prostate-cancer
#18
Evan Y Yu, Susan L Ellard, Sebastien J Hotte, Joel R Gingerich, Anthony M Joshua, Martin E Gleave, Kim N Chi
Purpose Heat shock protein 27 (Hsp27) is implicated in prostate cancer progression. Apatorsen is a second generation phosphorothioate antisense inhibitor of Hsp27 expression. We evaluated apatorsen in patients with metastatic castration resistant prostate cancer (mCRPC). Experimental design Eligible patients were randomized 1:1 to receive intravenous apatorsen (3 loading doses of 600 mg within 5-9 days followed by weekly doses of 1000 mg) with oral prednisone 5 mg twice daily or prednisone alone. The primary endpoint was disease progression at 12 weeks...
December 18, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/29250186/knockdown-of-long-non-coding-rna-hotair-sensitizes-hepatocellular-carcinoma-cell-to-cisplatin-by-suppressing-the-stat3-abcb1-signaling-pathway
#19
Jia-Jia Zhou, Di Cheng, Xiao-Yu He, Zhe Meng, Hui-Lin Ye, Ru-Fu Chen
Long non-coding RNA HOX transcript antisense RNA (HOTAIR) has been demonstrated to exhibit oncogenic activity in several types of cancer, including hepatocellular carcinoma (HCC). However, the association between HOTAIR and HCC multidrug resistance remains uncertain. The present study aimed to investigate the role of HOTAIR in HCC chemoresistance; it was found that knockdown of HOTAIR expression in HCC Huh7 cells resulted in decreased cell proliferation and increased chemosensitivity to cisplatin. Furthermore, expression levels of ATP binding cassette subfamily B member 1 (ABCB1) mRNA and protein were decreased in Huh7 cells upon HOTAIR-knockdown...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29246313/assessment-of-the-drug-interaction-potential-of-unconjugated-and-galnac3-conjugated-2-moe-asos
#20
Colby S Shemesh, Rosie Z Yu, Mark S Warren, Michael Liu, Mirza Jahic, Brandon Nichols, Noah Post, Song Lin, Daniel A Norris, Eunju Hurh, Jane Huang, Tanya Watanabe, Scott P Henry, Yanfeng Wang
Antisense oligonucleotides are metabolized by nucleases and drug interactions with small drug molecules at either the cytochrome P450 (CYP) enzyme or transporter levels have not been observed to date. Herein, a comprehensive in vitro assessment of the drug-drug interaction (DDI) potential was carried out with four 2'-O-(2-methoxyethyl)-modified antisense oligonucleotides (2'-MOE-ASOs), including a single triantennary N-acetyl galactosamine (GalNAc3)-conjugated ASO. Several investigations to describe the DDI potential of a 2'-MOE-ASO conjugated to a high-affinity ligand for hepatocyte-specific asialoglycoprotein receptors are explored...
December 15, 2017: Molecular Therapy. Nucleic Acids
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