関連する実験動画
Updated: Aug 23, 2025
09:40
Teasing Out the Interplay Between Natural Killer Cells and Nociceptor Neurons
Published on: June 30, 2022
2.2K
ノシセプターニューロンは,がん免疫監視に影響する
Mohammad Balood1,2, Maryam Ahmadi1, Tuany Eichwald1,3
1Département de Pharmacologie et Physiologie, Université de Montréal, Montréal, Quebec, Canada.
Nature
|November 3, 2022
まとめ
腫瘍の神経細胞は 免疫システムを抑制します これらの感覚神経細胞から神経ペプチドCGRPを遮断すると,抗腫瘍免疫が強化され,メラノーマモデルでの生存が改善されます.
科学分野:
- 免疫学
- 神経科学
- 腫瘍学
背景:
- 固体腫瘍は 感覚神経線維と自律神経線維によって神経化されます
- 痛みを感知するニューロンによる腫瘍内化ががん免疫監視に与える影響は十分に理解されていません.
研究 の 目的:
- メラノーマ細胞と神経受容体の相互作用を研究する
- ノシセプターから放出された神経ペプチドが抗腫瘍免疫に影響するかどうかを判断する.
主な方法:
- メラノーマ細胞と神経受容体の相互作用を研究した.
- 細胞毒性CD8+T細胞に対するカルシトニン遺伝子関連ペプチド (CGRP) の効果を調査した.
- TRPV1系統の遺伝的消去,ノシセプターの薬理学的静止,マウスモデルにおけるCGRP受容体の対抗性を利用した.
- ヒトのメラノーマ患者の生検で単細胞RNA配列を解析した.
主要な成果:
- メラノーマ細胞は神経受容体の増殖と神経ペプチドの放出を促進する.
- CGRPは細胞毒性CD8+T細胞の枯渇を直接増加させ,メラノーマの除去を阻害する.
- CGRPの信号伝達や感覚神経を遮断すると,T細胞の枯渇が減り,腫瘍の成長が減り,マウスの生存率が著しく向上しました.
- 人間のメラノーマのデータは,RAMP1+ CD8+ T細胞がより枯渇し,予後が悪いことを示した.
結論:
- 抗腫瘍CD8+T細胞の反応を抑制するCGRPを放出する.
- CGRPシグナリングをターゲットにすることは,がんの免疫監視を強化し,メラノーマの治療結果を改善するための潜在的な戦略です.
関連する概念動画
02:53Adaptive Mechanisms in Cancer Cells
5.9K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.9K
01:19Psychoneuroimmunology: Diabetes and Cancer
56
Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
56
01:33Cancer-Critical Genes I: Proto-oncogenes
9.1K
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...
9.1K
01:27Cytotoxic T Cells-mediated Immune Response
1.1K
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
1.1K
01:28Cells of the Innate Immune Response
2.0K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
2.0K
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
7.7K
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...
7.7K