関連する実験動画
Updated: Jun 25, 2026

10:13
Micropatterned Surfaces to Study Hyaluronic Acid Interactions with Cancer Cells
Published on: December 23, 2010
まとめ
不分化テロがん幹細胞は,細胞表面分子を用いて,他の細胞のマノースに富んだ炭水化物と結合します. この相互作用は,細胞の結合と結合に極めて重要です.
科学分野:
- 発達生物学 発達生物学とは
- 細胞生物学 細胞生物学
- グライコバイオロジーは,
背景:
- テラトカルシノーマ幹細胞 (TSC) は,自己再生能力を持つ多能細胞である.
- TSCにおける細胞-細胞結合メカニズムを理解することは,発達生物学の研究にとって不可欠です.
研究 の 目的:
- 不分化テラトカルシノーマ幹細胞における細胞間粘着の分子基盤を特定する.
- TSC集積における炭水化物結合分子の役割を調査する.
主な方法:
- グルタルアルデヒド固定されたウサギの赤血球を用いたローゼット測定法で,細胞表面の炭水化物結合活性を検出する.
- 単純糖とマノースに富んだグリコプロテイン (インヴェルターゼ,マナンス,ペロキシダゼ) を用いた抑制アッセイ.
- 炭水化物の役割を評価するために,抑制剤の化学的改変 (周期性酸化,プロナース消化)
主要な成果:
- TSCは,オリゴマンノシル残基を結合する表面分子を発現する.
- ローゼット形成はマノースに富んだグリコプロテインによって阻害され,炭水化物の特定の認識を示した.
- 周期的酸化により抑制活性が廃止され,結合の炭水化物の性質が確認された.
- 阻害剤はまた,幹細胞の再集積と解離に影響を与え,粘着における役割を示唆しています.
結論:
- TSCのレクチンのような成分がオリゴマンノース構造を認識する.
- この相互作用は,おそらく細胞間粘着とテラトカルシノマ幹細胞の集積を媒介する.
- 発見は,幹細胞の粘着の分子機構の洞察を提供します.
関連する概念動画
Cancer Stem Cells and Tumor Maintenance
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cadherins in Tissue Organization
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
Cell Adhesion Molecules - Types and Functions
Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily involved in a...
CAM Families
The Integrin family of proteins is primarily involved in a...
Selectins
Cell adhesion is an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain, which...
Cancer Stem Cells and Tumor Maintenance
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Distinctive Features of Adult Stem Cells vs Cancer Stem Cells
A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...

