在Pre-miR-675中结构修饰和新型蛋白结合部位 - - 解释其在致癌过程中的调节机制
1Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER-R)-Raebareli, Lucknow 226002, India.
Non-coding RNA
|August 25, 2023
概括
预-miR-675是一种与癌症相关的微RNA,其结构和蛋白质相互作用不明. 这项研究揭示了它的形状和结合点,为癌症治疗提供了新的治疗点.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 生物化学 生化学
背景情况:
- 微RNA pre-miR-675是由H19长非编码RNA衍生而来的,它与各种疾病有关,尤其是癌症.
- 目前,pre-miR-675的精确的三维结构和蛋白质相互作用机制尚未表征.
- 在H19长非编码RNA和pre-miR-675之间的功能交叉和相互调节仍然不太清楚.
研究的目的:
- 为了阐明pre-miR-675.5的结构形状.
- 为了确定前-miR-675.5的新型蛋白结合部位.
- 研究H19长非编码RNA与前miR-675.5之间的相互作用和调控机制.
主要方法:
- 预米R-675.5的详细结构分析.
- 在H19长非编码RNA和pre-miR-675.5之间进行同折叠分析.
主要成果:
- 该研究确定了先前未知的前-miR-675.5的形状.
- 在miR-675前发现了新的蛋白结合部位.
- 在与H19 lncRNA共同折叠时,在pre-miR-675中的结构转变被揭示出来,阐明了它们的相互作用机制.
结论:
- 确定了pre-miR-675的形状和确定了蛋白质结合部位,使其成为癌症的潜在治疗标.
- 了解H19 lncRNA和pre-miR-675之间的结构关系,可以了解瘤的发生.
- 这项研究为开发针对H19/miR-675轴的新型抗癌疗法奠定了基础.
相关概念视频
Covalently Linked Protein Regulators
6.9K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
6.9K
Abnormal Proliferation
4.6K
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...
4.6K
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
Mechanisms of Retrovirus-induced Cancers
5.1K
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
5.1K
Induced Pluripotent Stem Cells
4.2K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
4.2K
Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K


