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Long noncoding RNA (lncRNA) nuclear enriched abundant transcript 1 (NEAT1) is nuclear-located and transcribed from chromatin 11. To date, little is known about the cellular functions and regulatory mechanisms of NEAT1 in prostate cancer (PCa). In this study, whole-genome RNA sequencing data were downloaded from TCGA and GEO databases. Biological information was used to analyze the different expressions of NEAT1. In situ hybridization (ISH) was performed to detect the expression of NEAT1 in PCa and paracarcinoma clinical samples. Then, NEAT1 was knocked down in PC3 cells through lentiviral infection with a plasmid construct. Bioinformatics and integrative analytical approaches were utilized to identify the relationships of NEAT1 with specific cancer-related gene sets. Cell proliferation assay and colony formation assay were performed to evaluate the cell proliferative ability. Glycolysis stress test, metabolism assay, and infiltrating T-cell function analysis were implemented to assess the changes in metabolism and immune microenvironment of PCa. We found that the expression of NEAT1 was higher in PCa than in non-neoplastic tissues. The cell proliferative capability of PCa cells was significantly reduced in the NEAT1 knockdown group. PCR array and bioinformatics analysis revealed that the enrichment of acidic substance-related gene sets was associated with NEAT1 expression. NEAT1 depletion inhibited PCa cell aerobic glycolysis accompanied by the reduction of lactate levels in the medium. Further, we found that lactate dehydrogenase A (LDHA) expression was positively regulated by NEAT1. At last, co-culture systems indicated that NEAT1 or LDHA knockdown promoted the secretion of CD8+ T-lymphocyte factors, including TNF-α, IFN-γ, and Granzyme B, and enhanced the antitumor effects.
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http://dx.doi.org/10.4149/neo_2022_211021N1497 | DOI Listing |
PLoS One
December 2024
Department of Hematology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
Aims: Acute promyelocytic leukemia (APL) progresses quickly and often leads to early hemorrhagic death. Treatment with all-trans retinoic acid (ATRA) promotes differentiation of APL cells and clinical remission, making APL a potentially curable malignancy. Understanding how ATRA works may lead to new treatments for other types of leukemia.
View Article and Find Full Text PDFClin Exp Med
December 2024
Department of Gynecology, General Hospital of Ningxia Medical University, No. 804 South Shengli Street, Xingqing District, Yinchuan, 750004, Ningxia, China.
FUS-mediated alternative splicing and METTL3-regulated RNA methylation play crucial roles in RNA processing. The purpose of this study was to investigate the interactive roles of FUS and METTL3 in gastric cancer (GC) progression. RNA sequencing data were obtained from the TCGA-STAD dataset.
View Article and Find Full Text PDFMol Biol (Mosk)
December 2024
Laboratory of Functional Genomics, Research Centre for Medical Genetics, Moscow, 115522 Russia.
Long non-coding RNAs (lncRNAs) are involved in many cellular processes while displaying high tissue specificity. In contrast, protein-coding genes, including the category of housekeeping ones, exhibit broad expression patterns. The aim of this study was to highlight the functional importance of widely expressed lncRNAs.
View Article and Find Full Text PDFCell Biol Toxicol
December 2024
Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China.
The use of anesthetics during surgery can cause severe neurological damage and cognitive dysfunction in elderly patients. However, this health issue currently lacks corresponding therapeutic strategies. This research involved the utilization of single-cell RNA sequencing (scRNA-seq) and transcriptomic assessment to pinpoint crucial cell classifications and molecular pathways, as well as the lncRNA expression profiles, that undergo substantial alterations in aged rats experiencing sevoflurane-induced cognitive impairment.
View Article and Find Full Text PDFNucleic Acids Res
December 2024
School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia.
The proteins SFPQ (splicing Factor Proline/Glutamine rich) and NONO (non-POU domain-containing octamer-binding protein) are mammalian members of the Drosophila Behaviour/Human Splicing (DBHS) protein family, which share 76% sequence identity in their conserved 320 amino acid DBHS domain. SFPQ and NONO are involved in all steps of post-transcriptional regulation and are primarily located in mammalian paraspeckles: liquid phase-separated, ribonucleoprotein sub-nuclear bodies templated by NEAT1 long non-coding RNA. A combination of structured and low-complexity regions provide polyvalent interaction interfaces that facilitate homo- and heterodimerisation, polymerisation, interactions with oligonucleotides, mRNA, long non-coding RNA, and liquid phase-separation, all of which have been implicated in cellular homeostasis and neurological diseases including neuroblastoma.
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