関連する実験動画
Updated: Feb 14, 2026

07:08
Burn Injury-Induced Pain and Depression-Like Behavior in Mice
Published on: September 29, 2021
3.7K
プレリンビック皮質-ベースラテラルアミグダラのグルタマタージック回路は,マウスのがんによる骨の痛みを駆動する
Qi-Yan Feng1, Jin-Rong Wei1, Meng-Xue Song1
1Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China.
iScience
|February 13, 2026
まとめ
研究者らは,脳回路であるプレリンビック皮質 (PrL) から基礎側桃体 (BLA) の経路まで,がんによる骨の痛み (CIBP) を駆動する脳回路を特定しました. マウスにおけるこの回路を阻害することで,痛みが著しく軽減され,CIBPに対する新しい治療標的が提供されました.
科学分野:
- 神経科学は神経科学である.
- 痛みの研究 痛みの研究
- 腫瘍学 腫瘍学
背景:
- 癌に起因する骨の痛み (CIBP) は,治療の選択肢が限られている深刻な状態です.
- CIBPのメカニズムに関する既存の研究は,主に脳の中心回路を無視して,外周回路と脊髄回路に焦点を当てていました.
研究 の 目的:
- CIBPの調節におけるプレリンビック皮質 (PrL) から基礎側桃体 (BLA) への回路の役割を調査する.
- CIBPの管理のための潜在的な脳ベースの治療標的を特定する.
主な方法:
- 女性C57BL/6Jマウスにおける確立されたCIBPモデルでは,E0771の癌細胞を骨に注入した.
- PrL-BLA回路におけるニューロンの活動を操作するために,光遺伝学と化学遺伝学を利用した.
- 測定されたニューロン活動 (c-Fos発現,カルシウムイメージング) と痛みの行動 (痛みの値).
- 微細透析プローブを使用して,BLAにおけるグルタミン酸の放出を分析した.
主要な成果:
- BLAGluニューロンにおけるニューロン活性 (c-Fos,カルシウム) の上昇は,CIBPモデルで観察されました.
- BLAGluニューロンまたはPrLGluニューロンをBLAに投影する光遺伝的抑制により,痛みの値が上昇します.
- BLAGluニューロンの化学遺伝的阻害により,CIBP誘発の過活性化が逆転し,正常な痛みの値が回復しました.
- BLAにおける過剰なグルタミン酸の放出はCIBPモデルで検出され,PrL-BLA回路阻害によって減少した.
結論:
- PrLGlu-BLAGlu回路は,メスマウスにおけるCIBPの主要な調節器である.
- この回路の過剰活性化は,がんによる骨の痛みの発生に寄与する.
- PrL-BLA回路をターゲットにすることは,CIBPの有望な新しい治療戦略です.
関連する概念動画
Role of Amygdala in Memory
1.3K
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
1.3K
Energy to Drive Translocation
2.9K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
2.9K
Mechanisms of Retrovirus-induced Cancers
7.0K
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...
7.0K
Pain
1.4K
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
1.4K
M-Cdk Drives Transition Into Mitosis
6.6K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
6.6K
Second-Order Circuits
3.6K
Integrating two fundamental energy storage elements in electrical circuits results in second-order circuits, encompassing RLC circuits and circuits with dual capacitors or inductors (RC and RL circuits). Second-order circuits are identified by second-order differential equations that link input and output signals.
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
3.6K

