関連する実験動画
Updated: Sep 10, 2025
05:20
Zebrafish Model of Neuroblastoma Metastasis
Published on: March 14, 2021
2.9K
コヘシン負荷因子 (NIPBL) は,神経芽細胞腫におけるMYCN発現とMYCN誘発性腫瘍転写に不可欠である
Jee-Youn Kang1, Kaitlyn A Tremble1, Philip Homan2,3
1Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.
Cancers
|August 28, 2025
まとめ
NIPBLは,高リスクの神経芽細胞腫におけるMYCN主導の転写をサポートしています. NIPBLを抑制すると,MYCNレベルが低下し,神経細胞の分化が促進され,増殖が減少し,潜在的な治療戦略が提供されます.
科学分野:
- 腫瘍学
- 分子生物学
- 遺伝学
背景:
- 高リスクの神経芽細胞腫は 治療にも関わらず 悪い結果が出ます
- MYCNの増幅は 攻撃的な腫瘍の行動と 不分化状態を誘発します
- MYCNを直接ターゲットにするのは難しいので 規制当局の調査が必要です
研究 の 目的:
- 神経芽細胞腫におけるMYCN転写プログラムのサポートにおけるNIPBLの役割を調査する.
- NIPBLが高リスク神経芽細胞瘤の 治療対象であるかどうかを判断する.
主な方法:
- 神経芽細胞腫患者のデータで評価されたNIPBL表現.
- ニューロブラストーマの細胞系における 枯渇したNIPBL.
- MYCN mRNAとタンパク質のレベルを分析した.
- 転写プロファイリングを行い,細胞増殖と分化を評価した.
主要な成果:
- NIPBL発現の上昇は,未分化神経芽細胞腫と予後不良と相関する.
- NIPBLの減少はMYCNのレベルを低下させ,ニューロンの分化を引き起こします.
- NIPBLの喪失はMYCN標的遺伝子の調節を阻害し,増殖を減少させます.
結論:
- NIPBLは,神経芽細胞腫におけるMYCN誘導トランスクリプトームと機械的に関連しています.
- NIPBLは,高リスクの神経芽細胞腫の分化を促進するための潜在的な治療的脆弱性を表しています.
さらに関連する動画
関連する概念動画
01:06Induced Pluripotent Stem Cells
4.4K
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...
4.4K
02:23Abnormal 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
03:14Notch Signaling Pathway
4.4K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.4K
01:29Somatic to iPS Cell Reprogramming
2.3K
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
2.3K
02:55The Nucleolus
9.1K
The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
9.1K
02:54Canonical Wnt Signaling Pathway
8.9K
The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
8.9K