ヒトiPS細胞から機能的なマクロファージへの分化のための、頑健でスケーラブルかつ異種細胞を含まないプロトコル
Miquel De Homdedeu1,2, Rubén Escribá1, Kenia Rodríguez-González1
1Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.
Frontiers in immunology
|January 28, 2026
まとめ
研究者らは、細胞免疫療法のためのヒトiPS細胞(hiPSC)由来マクロファージ(iMac)を製造するためのスケーラブルなプロトコルを開発しました。この方法は、臨床応用に高い純度と効率を保証します。
科学分野:
- 幹細胞生物学
- 免疫学
- 細胞療法
背景:
- ヒトiPS細胞(hiPSC)由来マクロファージ(iMac)は、自家細胞免疫療法において有望視されています。
- 効率的でスケーラブル、かつ医薬品製造管理および品質管理基準(GMP)に準拠した分化プロトコルの欠如が、臨床応用を妨げています。
研究 の 目的:
- 臨床グレードのhiPSCから機能的なiMacへの分化のための、頑健でスケーラブル、かつGMPに準拠したプロトコルの開発。
- 分化条件を最適化し、GMPへの迅速な応用を可能にすること。
主な方法:
- 胚様体(EB)形成による3D培養でhiPSCを中胚葉へと分化させました。
- EBから骨髄前駆細胞を誘導し、G-Rexプラットフォームを用いてM1またはM2 iMacへとさらに分化させました。
- 分化、純度、および機能をフローサイトメトリー、食作用アッセイ、ELISA、およびMay-Grünwald Giemsa染色を用いて評価しました。
主要な成果:
- 生存iMacの平均純度98%を達成しました。
- 単一のhiPSCから平均250倍の分化倍率を示しました。
- プロトコル全体を通して、フィーダー非存在下、スケーラブル、かつGMPに適用可能な試薬を使用しました。
結論:
- 開発されたプロトコルは、臨床グレードのhiPSCから機能的なiMacを効率的に製造します。
- このスケーラブルな方法はGMP製造に適しており、細胞免疫療法におけるiMacの進歩を促進します。
関連する概念動画
Induced Pluripotent Stem Cells
28.0K
Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
28.0K
Induced Pluripotent Stem Cells
5.6K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
5.6K
Embryonic Stem Cells
32.4K
Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
32.4K
Adult Stem Cells
33.8K
Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
33.8K
iPS Cell Differentiation
3.1K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
3.1K
B Cell Activation and Differentiation
16.3K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
16.3K


