长非编码RNA长跨基因非蛋白编码RNA173通过调节microRNA-765/Gremlin 1路径,促进鼻癌的进展
1Otorhinolaryngologic Department, The Fifth Hospital of Wuhan, Wuhan, China.
Human & experimental toxicology
|June 27, 2023
概括
长跨基因非蛋白编码RNA173 (LINC00173) 通过微RNA-765 (miR-765) 通过Gremlin 1 (GREM1) 的升调促进鼻癌 (NPC) 的进展. 这项研究揭示了LINC00173作为NPC的致癌因子.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 长跨基因非蛋白编码RNA173 (LINC00173) 在各种癌症中发挥作用,但其在鼻癌 (NPC) 中的功能仍然未被描述.
- 调查LINC00173的作用对于理解NPC病原和识别潜在的治疗点至关重要.
研究的目的:
- 研究LINC00173在鼻癌 (NPC) 中的表达和功能.
- 阐明LINC00173在NPC进展中的作用背后的分子机制,重点关注其与microRNA-765 (miR-765) 和Gremlin 1 (GREM1) 的相互作用.
主要方法:
- 使用定量实时逆转录PCR (qRT-PCR) 和免疫血栓检测来评估LINC00173,miR-765和GREM1在NPC细胞和组织中的表达.
- 在体外测试 (CCK8,殖民地形成,伤口愈合) 和体内异种移植实验评估了NPC细胞的增殖,生长和迁移.
- 生物信息学分析,光酶记者测定和RNA免疫沉芯片测定被用来确定LINC00173,miR-765和GREM1.1之间的相互作用.
主要成果:
- 在NPC组织和细胞系中,LINC00173的表达显著上调.
- 下调LINC00173抑制了NPC细胞的增殖,生长,迁移和瘤生长 in vivo.
- LINC00173通过海绵化miR-765来促进GREM1表达,从而推动NPC的进展.
结论:
- 通过与miR-765.5相互作用,LINC00173通过上调GREM1来作为NPC中的瘤原因子.
- 这项研究为NPC进展的分子机制提供了新的见解,并将LINC00173确定为潜在的治疗标.
相关概念视频
MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
lncRNA - Long Non-coding RNAs
8.7K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.7K
Non-LTR Retrotransposons
11.6K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.6K
piRNA - Piwi-interacting RNAs
6.9K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
6.9K
Experimental RNAi
6.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.2K
siRNA - Small Interfering RNAs
16.9K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.9K


