MARCKSのようなタンパク質は,アクソロットル付属体の再生を開始する分子です
Takuji Sugiura1,2, Heng Wang3, Rico Barsacchi2
1DFG Research Center for Regenerative Therapies (CRTD), Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.
Nature
|March 3, 2016
まとめ
科学者達は,アクソロトル マークスのようなタンパク質 (MLP) を,付属体の再生を開始する鍵となる分子として特定しました. この細胞外因子によって 細胞サイクルが始まり 再生過程の理解が進みます
科学分野:
- 再生生物学
- 分子生物学
- 発達生物学
背景:
- 細胞増殖を始めるには 精密な分子信号が必要です
- 神経信号がアクソロットの持続的な再生を支えていることは知られていますが,最初のトリガー分子は未確認のままです.
研究 の 目的:
- アクソロットル付属体の再生における増殖反応の開始に責任のある傷に関連する分子を特定する.
主な方法:
- 候補分子をスクリーニングするために 表現クローニング戦略を使用しました
- 特定された分子の機能を検証するために in vivo 機能の獲得と喪失の測定を行った.
主要な成果:
- アクソロットルマークスのようなタンパク質 (MLP) を細胞外で放出する因子として特定した.
- MLPは再生を開始するために不可欠な初期細胞サイクル反応を誘導することを実証しました.
結論:
- Axolotl MARCKSのようなタンパク質 (MLP) は,付属体の再生の主要なイニシアターです.
- この発見は,他の種の再生を理解し,潜在的に誘発するための分子標的を提供します.
関連する概念動画
Mechanism of Lamellipodia Formation
4.0K
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
4.0K
Cell Motility through Blebbing
2.7K
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...
Blebbing Through the Matrix
In multicellular...
2.7K
Mechanism of Filopodia Formation
3.4K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
3.4K
Whole Body Regeneration
4.4K
Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
4.4K
Role of Matrix Metalloproteases in Degradation of ECM
3.7K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
3.7K


