神经退行性疾病反映了回复元件在调节记忆和免疫力方面发挥的相互作用
1InsideOutBio, Charlestown, MA, United States.
Frontiers in neuroscience
|October 7, 2024
概括
内生逆元件 (ERE) 在记忆和免疫力方面具有双重作用. 由GAG囊体传递的免疫EREs通过PKR抑制病毒RNA转化,影响记忆,并可能导致神经退行.
科学领域:
- 分子生物学分子生物学
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
背景情况:
- 四足动物内源逆元件 (ERE) 编码蛋白质,在发育和先天免疫中发挥着重要作用.
- 来自ERE长终端重复 (LTR) 族群的组特异抗原 (GAG) 蛋白质可以形成病毒样囊 (VLC) 并传递mRNA.
- 免疫EREs,像LINES和SINES一样,利用Z-DNA/Z-RNA构造来对病原体进行自我/非自我歧视.
研究的目的:
- 研究免疫ERE通路与介导神经可塑性的记忆相关ERE之间的关系.
- 提出一种机制,说明免疫EREs在炎症状态下如何传递和功能.
主要方法:
- 该研究提出了基于现有文献的理论框架.
- 它涉及分析ERE,蛋白激酶R (PKR) 和细胞通路之间的拟议相互作用.
主要成果:
- 在炎症期间,以ERE编码的GAG囊可提供干扰素诱导的免疫ERE.
- 这些EREs激活PKR,抑制树突中的病毒RNA转化并限制病毒传播.
- 依赖PKR的 fosforylation破坏病毒内细胞通路,提供保护,但损害记忆力.
结论:
- 免疫EREs通过抑制翻译和破坏病毒传播,提供对病毒和自我复制元素的防御机制.
- 这种抗病毒反应以损害记忆形成和对神经退行性病理 (如粉样β沉积) 的潜在贡献为代价.
相关概念视频
Role of Neurotransmitters in Memory
466
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
466
Retroviruses
12.2K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.2K
Immunological Memory
554
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
554
Non-LTR Retrotransposons
11.4K
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...
11.4K
LTR Retrotransposons
17.4K
LTR retrotransposons are class I transposable elements with long terminal repeats flanking an internal coding region. These elements are less abundant in mammals compared to other class I transposable elements. About 8 percent of human genomic DNA comprises LTR retrotransposons. Some of the common examples of LTR retrotransposons are Ty elements in yeast and Copia elements in Drosophila.
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
17.4K
Immune Response Against Viral Pathogens
760
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
760


