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関連する概念動画

Tissues01:18

Tissues

86.5K
Cells with similar structure and function are grouped into tissues. A group of tissues with a specialized function is called an organ. There are four main types of tissue in vertebrates: epithelial, connective, muscle, and nervous.
86.5K
Tissues01:25

Tissues

73.4K
Tissues are a group of cells that share a common embryonic origin. Microscopic observation reveals that the cells in a tissue share morphological features and are arranged in an orderly pattern to perform specific functions. From an evolutionary perspective, tissues appear in more complex organisms. Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Each of these categories is...
73.4K
Levels of Organization01:09

Levels of Organization

143.1K
Biological organization is the classification of biological structures, ranging from atoms at the bottom of the hierarchy to the Earth's biosphere. Each level of the hierarchy represents an increase in complexity that builds upon the previous level.
Molecules Are Composed of Atoms, and Biomolecules Are Assembled from Molecules:
The most basic levels include atoms, molecules, and biomolecules. Atoms, the smallest unit of ordinary matter, are composed of a nucleus and electrons. Molecules...
143.1K
Cadherins in Tissue Organization01:19

Cadherins in Tissue Organization

4.4K
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...
4.4K
Structural Organization of the Human Body: An Overview01:18

Structural Organization of the Human Body: An Overview

33.9K
It is convenient to consider the body's structures in terms of fundamental levels of organization that increase in complexity: subatomic particles, atoms, molecules, organelles, cells, tissues, organs, organ systems, and organisms.
To study the chemical level of organization, scientists consider the simplest building blocks of matter: subatomic particles, atoms, and molecules. All matter in the universe is composed of one or more unique pure substances called elements, familiar examples of...
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Mapping the Emergent Spatial Organization of Mammalian Cells using Micropatterns and Quantitative Imaging
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HRCHY-CytoCommunityが細胞タイプ空間マップにおける階層的組織化を特定

Runzhi Xie1, Zekun Wang1, Jianrui Liu1

  • 1School of Computer Science and Technology, Xidian University, Xi'an, Shaanxi, China.

Nature communications
|March 1, 2026
PubMed
まとめ

HRCHY-CytoCommunityは、空間マップから多層組織構造を特定するグラフニューラルネットワークです。このツールは、細胞から臓器までの組織構造を解読し、疾患研究を支援します。

キーワード:
階層的組織化空間オミクスグラフニューラルネットワーク細胞コミュニティ組織構造予後層別化

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科学分野:

  • 計算生物学
  • 空間オミクス
  • グラフニューラルネットワーク

背景:

  • 組織は、多様な細胞タイプの集合を通じて階層的な空間的組織化を示します。
  • 組織構造の理解は、生物学的および医学的研究にとって重要です。

研究 の 目的:

  • 新しいグラフニューラルネットワークフレームワークであるHRCHY-CytoCommunityを提示すること。
  • 細胞タイプアノテーション付き空間マップから直接多層組織構造を特定すること。
  • 単一細胞から完全な組織までの組織構造の解読を可能にすること。

主な方法:

  • 微分可能なグラフプーリング、適応的エッジプルーニング、および正則化を統合したエンドツーエンドのグラフニューラルネットワークフレームワークを開発しました。
  • 細胞タイプ濃縮ベースのクラスタリングによるサンプル間階層アラインメントを実装しました。
  • 多様な空間オミクスデータセットでパフォーマンスをベンチマークしました。

主要な成果:

  • HRCHY-CytoCommunityは、粗視的な組織コンパートメントと微視的な細胞近傍を正確に特定します。
  • このフレームワークは、複数のスケールにわたる完全な細胞カバレッジと完全にネストされた関係を維持します。
  • 乳がんコホートに適用した結果、階層的な予後層別化が可能になり、生存に関連する空間パターンが明らかになりました。

結論:

  • HRCHY-CytoCommunityは、組織構造の解読のための一般的でスケーラブルなツールです。
  • このフレームワークは、階層的組織構造の特定において既存の方法よりも優れたパフォーマンスを発揮します。
  • 疾患メカニズムの理解と患者層別化に応用可能性があります。