関連する実験動画
Updated: Jun 27, 2026
09:52
Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis
Published on: March 13, 2014
サイトキネシスのは,2つの連続した信号によって位置づけられます
Henrik Bringmann1, Anthony A Hyman
1Max Planck Institute for Molecular Cell Biology and Genetics, Pfotenhauer Strasse 108, 01307 Dresden, Germany. bringman@mpi-cbg.de
Nature
|August 5, 2005
まとめ
細胞分裂のは,細胞分裂のである.
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:
- サイトキネシスのの位置は,子細胞のサイズと内容の分布を決定する.
- ミトティック・スピンデルの位置は,動物細胞のの位置を決定する.
- スピンドルアスターまたはミッドゾーンが主にを位置づけているかについては,不一致があります.
研究 の 目的:
- サイトキネシスのの位置づけにおけるミトーシス・スピンドルの構成要素の異なる役割を調査する.
- C. elegansのジゴトのの位置を決定する連続的なシグナルイベントの解明.
主な方法:
- 紫外線レーザーを利用して,C. elegans zygotesのミクロチューブルアスターからスパインドルミッドゾーンを空間的に分離しました.
- この分離がサイトキネシスのの形成と位置に与える影響を観察し,分析した.
主要な成果:
- マイクロチューブルアスターが最初にの位置をシグナルすることを示した.
- スピンドルのミッドゾーンから次の信号が表示されます.
- フォローの位置付けに不可欠な2つの連続したシグナルイベントを特定しました.
結論:
- サイトキネシスフォローポジショニングは,マイクロチューブルアスターとスパインドルミッドゾーンの両方を含む2段階のプロセスです.
- このメカニズムは,細胞分裂中に細胞成分を正確に分割することを保証します.
関連する概念動画
02:03Mitosis and Cytokinesis
In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome duplication, chromosome distribution to daughter cells, and finally, cell division. The cell cycle is tightly regulated by its regulatory systems as well as extracellular signals that affect cell proliferation.
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
02:15The Contractile Ring
Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
02:13Determining the Plane of Cell Division
Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is essential for determining the size of the two daughter cells. The cell division plane is perpendicular to the plane of chromosome segregation, but different types of organisms have different cell division mechanisms to suit their morphology and function.
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division starting...
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division starting...
01:35Mitosis and Cytokinesis
In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome duplication, chromosome distribution to daughter cells, and finally, cell division. The cell cycle is tightly regulated by its regulatory systems as well as extracellular signals that affect cell proliferation.
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
02:15The Contractile Ring
Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
02:13Determining the Plane of Cell Division
Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is essential for determining the size of the two daughter cells. The cell division plane is perpendicular to the plane of chromosome segregation, but different types of organisms have different cell division mechanisms to suit their morphology and function.
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division starting...
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division starting...