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Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

4.0K
Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
4.0K
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

3.0K
The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
3.0K
Renewal of Intestinal Stem Cells01:23

Renewal of Intestinal Stem Cells

2.5K
The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the...
2.5K
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

1.8K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.8K
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

4.9K
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...
4.9K
Lineage Commitment01:21

Lineage Commitment

3.0K
Commitment is the  process whereby stem cells:
3.0K

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Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
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Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice

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T細胞を活性化させるための幹細胞の開封

Carlson Tsui1, Axel Kallies1

  • 1Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.

Science (New York, N.Y.)
|October 10, 2024
PubMed
まとめ

エピジェネティック・レギュレータをターゲットにすることで 免疫反応の重要な要因であるT細胞の枯渇を防ぐことができます このアプローチは様々な状態で 免疫機能を強化するための新しい戦略を提供します

科学分野:

  • 免疫学
  • エピジェネティクス
  • 細胞生物学

背景:

  • T細胞疲労は T細胞機能障害の状態です
  • 慢性感染症や癌の際に有効な適応免疫を損なう.
  • エピジェネティック・モディフィケーションはT細胞の機能を調節する上で重要な役割を果たします

研究 の 目的:

  • T細胞疲労における表遺伝子調節体の役割を調査する.
  • これらのレギュレータをターゲットにすることで T細胞の枯渇を逆転させたり 防ぐことができるかどうかを判断する.

主な方法:

  • 慢性ウイルス感染のマウスモデルを使用した.
  • T細胞の遺伝子発現と表遺伝子マークを分析した.
  • 特定のエピジェネティック薬をT細胞に投与した.

主要な成果:

  • T細胞の枯渇に関連した重要な表遺伝子調節物質を特定した.
  • これらのレギュレータをターゲットにすることで T細胞の機能が回復することが示されました
  • 治療後にウイルスの負荷が著しく低下した.

結論:

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Generation of Induced Pluripotent Stem Cells from Human Melanoma Tumor-infiltrating Lymphocytes
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A Three-dimensional Thymic Culture System to Generate Murine Induced Pluripotent Stem Cell-derived Tumor Antigen-specific Thymic Emigrants

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  • エピジェネティック・レギュレーションはT細胞の枯渇を決定する重要な要因です
  • エピジェネティック・レギュレータを標的とした治療は,T細胞枯渇と闘い,免疫反応を改善するための有望な治療戦略です.