収束性持続細胞状態の識別と遺伝子解剖
Sydney B Blattman1, Wenyan Jiang1,2, E Riley McGarrigle1
1Department of Biological Sciences, Columbia University, New York, NY, USA.
Nature
|November 7, 2024
まとめ
抗生物質に耐えるパーシスター細胞は 転移性欠陥と関連しています ロンやyqgEのような重要な遺伝子は 細菌の持続性にとって 決定的であることが判明しました
科学分野:
- 微生物学
- 遺伝学
- 分子生物学
背景:
- 耐久性細胞は 抗生物質の治療に耐えて 感染症の除去を阻害する 希少な変種です
- 持続性のある細胞形成の生理学的および遺伝的基盤は,まだ十分に理解されていません.
- 耐性菌に寄与する要因を特定することは,抗生物質耐性菌に対する戦略を策定する上で極めて重要です.
研究 の 目的:
- エシェリキア・コライの細胞形成の転写状態と遺伝的決定因子を明らかにする.
- 持続的な生理学におけるトランスレーション欠陥の役割を調査する.
- 飢餓に伴う持続性に関与する 新種の遺伝子を特定するためです
主な方法:
- エシェリキア・コライの高解像度単細胞RNAアトラスの生成
- ゲノム全体の遺伝子貢献分析のための超密度のCRISPR干渉の適用.
- 様々な遺伝的,生理学的モデルを比較した分析.
主要な成果:
- 持続性細胞は,標準的な成長段階とは異なる,トランスレーション欠陥によって特徴づけられる独特の転写状態を示す.
- ゲノム全体のスクリーンは,lon と yqgE を含む,持続形成に影響を与える重要な遺伝子を特定しました.
- yqgE遺伝子は,飢餓後の休眠期および持続期間を有意に調節することが判明しました.
結論:
- 飢餓による細菌の持続性は,特定の生理学的 (翻訳的欠陥) と遺伝的要因によって支えられています.
- プロテアゼロンは 細菌の持続性の重要な遺伝的調節因子です
- これらのメカニズムの理解は 頑固な細菌感染と闘うための潜在的な標的を提供します
さらに関連する動画
10:20Simultaneous Assessment of Kinship, Division Number, and Phenotype via Flow Cytometry for Hematopoietic Stem and Progenitor Cells
Published on: March 24, 2023
1.5K
09:31Laser-assisted Microdissection LAM as a Tool for Transcriptional Profiling of Individual Cell Types
Published on: May 10, 2016
9.3K
関連する概念動画
Methods of Nuclear Reprogramming
1.8K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.8K
Maintenance of the ES Cell State
2.2K
The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
2.2K
Somatic to iPS Cell Reprogramming
2.2K
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...
2.2K
Cellular Differentiation
2.6K
How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
A zygote is a...
2.6K
Determination
18.2K
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
18.2K
