Springer/Nature koncernen har publicerat en ny Glioblastomastudie från Kina. Bakom studien står staten Kina som finansiär. 7 kinesiska forskare har denna gång tagit sig an denna cancerform ur ett nytt perspektiv (igen). Man har fokuserat på en viss molekyl i den DNA-närbesläktade genuppsättningen RNA.
Forskarna berättar vidare att man funnit dessa som funktion till att reglera (få att fungera) blodkärl i blodbanan till tumören. Deras slutsats är att kan man påverka (ha ihjäl) dessa signalmarkörer stryper man möjligheten till tumören att få näring(blod),och med det oskadliggöra cancern. Kräver dock,som jag förstår det,att man på ett tidigt stadie kommer in i sjukdomsbilden.Att patient x håller på att utveckla Gliotumören. Stämmer deras slutsats kan dessa forskare alltså ha kommit på bot till denna förbannade amöba, men som sagt,tidigt stadie innan blodbanan utvecklats färdigt.Från denna slutsats finns möjligheten att forska vidare på området blodbana-glioblastoma och därigenom rädda även de med utvecklad Gliocancer.
Expression profiles and function prediction of tRNA-derived fragments in glioma
Abstract
Background
Glioblastoma (GBM) is the most aggressive malignant primary brain tumor. The transfer RNA-derived fragments (tRFs) are a new group of small noncoding RNAs, which are dysregulated in many cancers. Until now, the expression and function of tRFs in glioma remain unknown.
Methods
The expression profiles of tRF subtypes were analyzed using the Cancer Genome Atlas (TCGA)-low-grade gliomas (LGG)/GBM dataset. The target genes of tRFs were subjected to Gene Ontology, Kyoto Encyclopedia and Gene set enrichment analysis of Genes and Genomes pathway enrichment analysis. The protein-protein interaction enrichment analysis was performed by STRING. QRT-PCR was performed to detect the expressions of tRFs in human glioma cell lines U87, U373, U251, and human astrocyte cell line SVG p12. Western blot assay was used to detect to the expression of S100A11. The interaction between tRF-19-R118LOJX and S100A11 mRNA 3’UTR was detected by dual-luciferase reporter assay. The effects of tRF-19-R118LOJX, tRF-19-6SM83OJX and S100A11 on the glioma cell proliferation, migration and in vitro vasculogenic mimicry formation ability were examined by CCK-8 proliferation assay, EdU assay, HoloMonitor cell migration assay and tube formation assay, respectively.
Results
tRF-19-R118LOJX and tRF-19-6SM83OJX are the most differentially expressed tRFs between LGG and GBM groups. The functional enrichment analysis showed that the target genes of tRF-19-R118LOJX and tRF-19-6SM83OJX are enriched in regulating blood vessel development. The upregulated target genes are linked to adverse survival outcomes in glioma patients. tRF-19-R118LOJX and tRF-19-6SM83OJX were identified to suppress glioma cell proliferation, migration, and in vitro vasculogenic mimicry formation. The mechanism of tRF-19-R118LOJX might be related to its function as an RNA silencer by targeting the S100A11 mRNA 3’UTR.
Conclusion
tRFs would become novel diagnostic biomarkers and therapeutic targets of glioma, and the mechanism might be related to its post-transcriptionally regulation of gene expression by targeting mRNA 3’UTR.
Methods (Urval)
Cell migration assays
Cell migration assay was conducted using a HoloMonitor M4 digital holographic cytometer from Phase Holographic Imaging (PHI, Lund, Sweden) according to the manufacturer’s protocols. Twenty-four hours after transfection, U251 and U87 cells were seeded into 6-well plates with a density of 3 × 105 cells/ml. Twenty-four hours post seeding, the cells were tracked using the Hstudio and imaged every hour for 8 h. At the beginning of the analysis, five visually identifiable cells were selected for tracking in each group. The last image frame and the cell motility of each group were presented. Cell motility was showed in spatial X-Y plots.
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(B), cell migration (n = 5, Scale bars: 100 μm) (C) and in vitro VM formation (n = 3, Scale bars: 200 μm) |
Bara för att visa komplexiteten i studien klistrar jag in denna bild.Uthållighet och brain måste vara högt utvecklade hos dessa forskare för att kunna ta sig igenom alla dessa korskopplingar.
(Och en översättning riktad till forskare från Kina.)
作為為所有對 HoloMonitor 感興趣的中國研究人員提供的服務:HoloMonitor 演示
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