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関連する概念動画

Structural Protein Function01:56

Structural Protein Function

Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity.  In bones and teeth, it mineralizes to form...
Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
Animal and Plant Cell Structure01:30

Animal and Plant Cell Structure

Animal and plant cells not only differ in their structure, function, and mode of nutrition but also in how they reproduce, specialize, and organize into complex structures.
Cell Division
Though both plant and animal cells divide by mitosis (for non-gametic cells) and meiosis (for gametic cells), they differ in the specifics of this process. Unlike animal cells, plant cells lack centrosomes — an organelle responsible for organizing the spindle fibers and segregating the chromosomes during cell...
Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
Structural Organization of the Human Body: An Overview01:18

Structural Organization of the Human Body: An Overview

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...
Microbial Morphologies01:29

Microbial Morphologies

Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...

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Morphology-Based Distinction Between Healthy and Pathological Cells Utilizing Fourier Transforms and Self-Organizing Maps
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組織構造を活用した時空間的細胞タイプデコンボリューション

Macrina Maria Lobo, Ziqi Zhang, Xiuwei Zhang

    bioRxiv : the preprint server for biology
    |February 23, 2026
    PubMed
    まとめ
    この要約は機械生成です。

    SpaDecoderは、3D組織構造と単一細胞(sc)参照を活用することで、空間トランスクリプトミクスの細胞タイプデコンボリューションを改善します。この手法は、組織における細胞分布の理解を深めます。

    キーワード:
    空間トランスクリプトミクス細胞タイプデコンボリューション3D組織構造単一細胞RNAシーケンスバイオインフォマティクス

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    Whole-Brain Single-Cell Imaging and Analysis of Intact Neonatal Mouse Brains Using MRI, Tissue Clearing, and Light-Sheet Microscopy
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    科学分野:

    • ゲノミクス; バイオインフォマティクス; 計算生物学

    背景:

    • スポットベースの空間トランスクリプトミクス(ST)は、組織の場所からの集約されたトランスクリプトミクスデータを提供します。 細胞タイプデコンボリューションは細胞分布のマッピングに不可欠ですが、既存の手法は3D組織構造や単一細胞解像度の参照に苦労しています。

    研究 の 目的:

    • 3D組織アーキテクチャと単一細胞(sc)RNAシーケンス参照を効果的に利用する新しいデコンボリューション手法であるSpaDecoderを開発すること。 空間トランスクリプトミクスデータにおける細胞タイプ比率推定の精度を向上させること。

    主な方法:

    • SpaDecoderは、並列化された行列分解を使用して、3D空間的または時間的STスライス全体でスポットごとのデコンボリューションを実行します。 組織構造を活用するために、適応的に推測された3D近傍ガウスカーネルを組み込んでいます。 この手法は、sc参照プロファイルとバッチ効果のばらつきを考慮に入れています。

    主要な成果:

    • SpaDecoderは、3D組織構造とsc参照プロファイルを効果的に活用することで、細胞タイプデコンボリューションの改善を示しています。 消去試験と比較により、様々な指標とデータセットでその優れたパフォーマンスが確認されています。 このフレームワークは、遺伝子発現補完や共局在細胞タイプの同定を含む下流解析を可能にします。

    結論:

    • SpaDecoderは、空間トランスクリプトミクスにおける細胞タイプデコンボリューションのための堅牢で正確なソリューションを提供します。 3D組織情報を統合する能力は、空間的細胞タイプ分布の解析を大幅に進歩させます。 この手法は、多様な下流空間トランスクリプトミクス解析のための汎用的なプラットフォームを提供します。