瘤抑制剂miR-317和lncRNA Peony的表达来自于一个调节生殖线分化和丸形态的多基斯特龙非编码RNA位点,该位点调节生殖线分化和丸形态
Travis D Carney1,2, Halyna R Shcherbata1,2
1Institute of Cell Biochemistry, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.
bioRxiv : the preprint server for biology
|October 17, 2024
概括
微RNA-317 (miR-317) 通过调节Notch信号,在中起瘤抑制作用. 它的缺失导致生殖系瘤,突出其在干细胞分化和癌症预防中的作用.
科学领域:
- 干细胞生物学 干细胞生物学
- 非编码RNA的调节.
- 发育生物学是发展生物学.
背景情况:
- 非编码RNA显著影响干细胞的行为和分化.
- 了解特定的非编码RNA对于破译发育过程和疾病机制至关重要.
研究的目的:
- 调查微RNA-317 (miR-317) 和其相关的长非编码RNA (lncRNA) 花在生殖系干细胞分化中的作用.
- 阐明miR-317影响干细胞命运和瘤抑制的分子机制.
主要方法:
- 从共享的位置分析miR-317和lncRNAPeony的共同表达.
- 研究替代多基化对差异性基因表达的影响.
- 评估改变miR-317和Peony水平对生殖系干细胞分化和丸形态的影响.
- 检查体质囊细胞中Notch信号通路活动的调节.
主要成果:
- miR-317 和 lncRNA Peony 是从单个位点共同表达的,其差异性表达由替代多基化调节.
- 增加的皮奥尼表达会破坏丸肌肉,而miR-317缺乏会导致生殖线瘤.
- 失去miR-317提高了体质囊细胞中的Notch信号,推动了生殖线瘤发生.
- 一些预测的miR-317标,包括Notch通路调节器,在生殖线瘤中被上调.
结论:
- miR-317通过调节Notch信号强度来作为一种新的瘤抑制剂.
- miR-317,lncRNA Peony和Notch信号之间的相互作用对于维持生殖干细胞稳态和预防瘤发生至关重要.
相关概念视频
lncRNA - Long Non-coding RNAs
8.5K
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...
8.5K
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
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
Cancer-Critical Genes II: Tumor Suppressor Genes
7.3K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
7.3K
Loss of Tumor Suppressor Gene Functions
4.7K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
4.7K
piRNA - Piwi-interacting RNAs
6.8K
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...
6.8K


