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関連する概念動画

Enlargement of the Plasma Membrane01:22

Enlargement of the Plasma Membrane

Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
Microbial Interactions: Competition01:26

Microbial Interactions: Competition

Microbial competition is an ecological interaction in which microorganisms vie for limited resources within shared environments. These resources may include nutrients, space, or light, depending on the system. The intensity and outcome of competition are influenced by the environmental context, such as nutrient availability, spatial constraints, and the diversity of microbial species present. These competitive interactions significantly influence the structure, function, and resilience of...
Phagocytosis00:41

Phagocytosis

Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis ("cellular eating") is one of three major types of endocytosis. Cells use phagocytosis to take in large objects, such as other cells (or their debris), bacteria, and even viruses.
The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). Many immune system cells, including...
Phagocytosis00:41

Phagocytosis

Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis (“cellular eating”) is one of three major types of endocytosis. Cells use phagocytosis to take in large objects—such as other cells (or their debris), bacteria, and even viruses.The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). It is perhaps unsurprising, that many...
Endocytosis01:16

Endocytosis

Eukaryotic cells acquire nutrients for growth and proliferation. Nutrients and other molecules that require degradation are internalized from the extracellular space by a process called endocytosis. The term ‘endocytosis' was first coined by Christian de Duve in 1963.
Endocytosis always begins with the plasma membrane enclosing an incoming molecule to form a transport vesicle which, in some cases, can be coated with a protein called ‘clathrin.' Endocytosed material is either sorted through...
Cell Motility through Blebbing01:16

Cell Motility through Blebbing

Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...

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関連する実験動画

Updated: Jul 14, 2026

An Engulfment Assay: A Protocol to Assess Interactions Between CNS Phagocytes and Neurons
07:38

An Engulfment Assay: A Protocol to Assess Interactions Between CNS Phagocytes and Neurons

Published on: June 8, 2014

細胞の競争のために,飲み込みが求められます.

Wei Li1, Nicholas E Baker

  • 1Department of Molecular Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.

Cell
|June 19, 2007
PubMed
まとめ

正常な細胞は,ドロソフィラのリボソームタンパク質遺伝子の量が減少した隣接する"Minute"細胞を排除します. ドレーパーやホープのようなエングルフメント遺伝子は,このプロセスに不可欠であり,細胞の競争と組織の成長を調節する役割を強調しています.

科学分野:

  • 細胞生物学 細胞生物学
  • 発達生物学 発達生物学とは
  • 遺伝学 遺伝学とは

背景:

  • 細胞の競争は,適格な細胞が弱い隣人を排除するメカニズムであり,組織ホメオスタシスと発達に不可欠です.
  • 遺伝子モザイクは,細胞の相互作用と,発達中の組織内の成長の調節を研究するための強力なツールです.
  • リボソームタンパク質の遺伝子用量を減らすことが特徴であるドロソフィラの微小な細胞は,競争中の弱い細胞のモデルとして機能します.

研究 の 目的:

  • 野生型の細胞が隣接するDrosophilaのMinute細胞を排除するために必要な遺伝子を特定する.
  • 細胞の競争の文脈で,細胞の包囲の基礎となる分子機構を解明する.
  • 細胞間の成長の違いが,リボソーム遺伝子の投与量が減少した細胞の除去をどのように制御するかを理解する.

主な方法:

  • ドロソフィラの遺伝子モザイクの生成により,ワイルド型とミニート細胞の競争が生まれます.
  • 遺伝子スクリーンと分子マーカーを用いた細胞死と吸収経路の分析.
  • ミニート細胞の除去を媒介する特定の遺伝子の役割を調査する.

主要な成果:

  • エングルフメント遺伝子は,ドラッパー,ホースプ,フォスファティディルセリン受容体,mbc/dock180,rac1は,野生型の細胞がMinuteの隣人を殺すのに不可欠です.

さらに関連する動画

Quantification of Interbacterial Competition using Single-Cell Fluorescence Imaging
07:34

Quantification of Interbacterial Competition using Single-Cell Fluorescence Imaging

Published on: September 2, 2021

A Mimic of the Tumor Microenvironment: A Simple Method for Generating Enriched Cell Populations and Investigating Intercellular Communication
09:52

A Mimic of the Tumor Microenvironment: A Simple Method for Generating Enriched Cell Populations and Investigating Intercellular Communication

Published on: September 20, 2016

関連する実験動画

Last Updated: Jul 14, 2026

An Engulfment Assay: A Protocol to Assess Interactions Between CNS Phagocytes and Neurons
07:38

An Engulfment Assay: A Protocol to Assess Interactions Between CNS Phagocytes and Neurons

Published on: June 8, 2014

Quantification of Interbacterial Competition using Single-Cell Fluorescence Imaging
07:34

Quantification of Interbacterial Competition using Single-Cell Fluorescence Imaging

Published on: September 2, 2021

A Mimic of the Tumor Microenvironment: A Simple Method for Generating Enriched Cell Populations and Investigating Intercellular Communication
09:52

A Mimic of the Tumor Microenvironment: A Simple Method for Generating Enriched Cell Populations and Investigating Intercellular Communication

Published on: September 20, 2016

  • ワイルド型の細胞は,除去されたミニート細胞の遺体を飲み込む.
  • 逆に,吸収活動が高い細胞は,ワイルド型細胞を排除することができ,これらの遺伝子の二重の役割を実証します.

    • 結論:

    • エングルフメント遺伝子は,細胞成長の差異の下流で作用し,リボソーム遺伝子の量が減少した細胞の除去を媒介する.
    • 特定されたエンゴルフメント遺伝子は,損傷した細胞を除去することによって,組織修復と腫瘍抑制に重要な役割を果たします.
    • この研究は,サブ最適の細胞を排除するための保存されたメカニズムを明らかにし,組織の完全性と有機体の健康に貢献しています.