REV-ERBsの薬学的な活性化は,癌および腫瘍遺伝子誘発の老化において致命的である
Gabriele Sulli1, Amy Rommel2, Xiaojie Wang3
1Regulatory Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA.
Nature
|January 11, 2018
まとめ
REV- ERBアゴニストのSR9009とSR9011は,循環器リズムを乱すことで,選択的に癌細胞を殺し,新しい治療戦略を提供する. これらの化合物は正常な細胞を傷つけることなく強力な抗がん効果を示します.
科学分野:
- クロノバイオロジー
- 分子腫瘍学
- 薬理学について
背景:
- 日常時計の乱れは 癌の発生と関連しています
- サーカディアンメカニズムを薬理的にターゲットにすることが 潜在的ながん治療法です
- REV-ERB核受容体は 昼夜時計の重要な構成要素です
研究 の 目的:
- REV-ERBアゴニストの抗がん性を調査する.
- REV-ERBアゴニストの作用機構と選択性を決定する.
- REV-ERBアゴニストの有効性と毒性を臨床前モデルで評価する.
主な方法:
- REV- ERBアゴニストSR9009およびSR9011によるがん細胞および正常細胞の治療
- 細胞活性の評価,アポトーシス,オートファジー,そして新しい脂質生成.
- グリオブラストーマのマウスモデルを用いた in vivo 研究
主要な成果:
- SR9009とSR9011は,がん細胞と老化細胞のアポトーシスを選択的に誘導し,正常な細胞は避けます.
- 抗がん作用は,様々な腫瘍誘発因子,p53欠乏症,低毒性疾患で観察されています.
- REV- ERBアゴニストは,オートファジーとデノボリポゲネシスを阻害し,癌細胞の死滅につながります.
- vivoでは,これらのアゴニストは,目に見える毒性なしに,膠芽細胞腫の増殖を抑制し,生存率を向上させた.
結論:
- REV- ERBアゴニストは,腫瘍に対する選択的毒性を持つ有望な抗がん剤のクラスです.
- サーカディアンレギュレータの薬理学的調節は効果的な抗腫瘍戦略を提供します.
- REV-ERBアゴニストは幅広い治療窓と様々ながんの治療の可能性を持っています.
関連する概念動画
Cancer-Critical Genes I: Proto-oncogenes
11.5K
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...
11.5K
Lethal Alleles
18.2K
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
18.2K
Replicative Cell Senescence
4.4K
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...
4.4K
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
Cholinergic Antagonists: Pharmacological Actions
1.8K
Antimuscarinic drugs block muscarinic receptors in multiple systems, including the gut, eye, smooth muscles, respiratory tract, cardiovascular, and central nervous systems. They produce similar effects with varying selectivity depending on the specific agent and tissue. Here are the key pharmacological actions of antimuscarinics:
Gastrointestinal Effects: Antimuscarinics reduce gut contractions, increase gastric emptying, and slow intestinal transit. They partly inhibit gastric acid secretion...
Gastrointestinal Effects: Antimuscarinics reduce gut contractions, increase gastric emptying, and slow intestinal transit. They partly inhibit gastric acid secretion...
1.8K
Drug Abuse and Addiction: Pharmacological Phenomena
1.3K
Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
1.3K


