関連する実験動画
Updated: May 29, 2025

09:40
Generation of Genomic Deletions in Mammalian Cell Lines via CRISPR/Cas9
Published on: January 3, 2015
95.3K
SKI複合体の損失は9p21.3-削除またはMSI-H癌をPELOに依存させる
Patricia C Borck1, Isabella Boyle1, Kristina Jankovic2
1Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Nature
|February 5, 2025
まとめ
PELOは9p21.3の欠損またはマイクロサテライト不安定性高い (MSI-H) 状態のがんにおける新たな合成致死標的として特定されました. PELOをターゲットにすることで これらの特定の癌のサブタイプに対する 有望な治療戦略が提供されます
科学分野:
- ゲノミクス
- 癌 生物学
- 合成による死亡率
背景:
- 癌のゲノム変異は 標的型療法で利用可能な脆弱性を生み出します
- 承認されたおよび試験中の阻害剤は,合成的致死標的化の可能性を示しています.
研究 の 目的:
- 特定の癌のサブタイプにおける 新種の合成致死標的を特定するためです
- 9p21.3 欠損またはマイクロサテライト不安定性 (MSI-H) の高いがんにおけるPELOの役割を調査する.
主な方法:
- 癌依存マップからの大規模な CRISPR ノックアウトスクリーニングデータの分析
- バイアレル9p21. 3削除またはMSI-Hの癌におけるPELO依存性の調査.
- 細胞のストレス反応に対する PELO 減少の影響を調べました
主要な成果:
- 双アレル9p21. 3欠損 (FOCADを含む) またはMSI-H (TTC37変異を含む) がんにおける合成致死標的としてPELOを特定した.
- 両方のがんサブタイプは,スーパーキラー複合体 (SKIc) の不安定化につながる.
- SKIc欠乏細胞におけるPELOの減少は,展開されたタンパク質応答を誘導する.
結論:
- PELOは,バイアレル9p21. 3欠損またはTTC37変異を有するMSI- Hを有するがんに対する有望な治療標的である.
- SKIcの機能におけるPELOの役割を理解することは,標的型がん治療の開発のための基礎を提供します.
関連する概念動画
Loss of Tumor Suppressor Gene Functions
4.7K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
4.7K
Cancer-Critical Genes II: Tumor Suppressor Genes
7.3K
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...
7.3K
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
Cancers Originate from Somatic Mutations in a Single Cell
11.5K
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
11.5K
Cancer-Critical Genes I: Proto-oncogenes
8.7K
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...
8.7K
Long-patch Base Excision Repair
7.0K
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
7.0K

