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相关概念视频

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Replicative Cell Senescence02:15

Replicative Cell Senescence

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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...
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Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
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相关实验视频

Updated: Jul 12, 2025

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans
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Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans

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在单细胞分辨率下,解码依赖衰老的组织再生衰退.

Yusheng Cai1, Muzhao Xiong2, Zijuan Xin1

  • 1State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China.

Cell stem cell
|October 28, 2023
PubMed
概括
此摘要是机器生成的。

衰老通过影响干细胞流动性和血管形成,显著损害组织再生. 一种特定的巨类型,Arg1+,在这种与年龄相关的衰退中发挥着关键作用,提供了潜在的治疗点.

关键词:
Arg1(+) 大细胞老化的老化 衰老的老化血管新生是因为血管新生.复兴再生是一种再生方式.一个单细胞的地图.干细胞的移动性 干细胞的移动性组织修复 组织修复

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Droplet Barcoding-Based Single Cell Transcriptomics of Adult Mammalian Tissues

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Single-cell Profiling of Developing and Mature Retinal Neurons
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Single-cell Profiling of Developing and Mature Retinal Neurons

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相关实验视频

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Droplet Barcoding-Based Single Cell Transcriptomics of Adult Mammalian Tissues
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科学领域:

  • 再生医学是一种再生医学.
  • 生物老龄化 生物老龄化
  • 免疫学 免疫学 免疫学

背景情况:

  • 组织再生能力在体内各不相同,随着年龄的增长而下降.
  • 了解与年龄相关的再生衰退的分子基础对于开发干预措施至关重要.

研究的目的:

  • 在年轻小鼠和老鼠的再生过程中全面分析单细胞转录组.
  • 识别衰老组织中受损再生背后的细胞和分子机制.

主要方法:

  • 来自年轻和老老小鼠的八种组织的单细胞转录组分析.
  • 应用各种分析模型来研究组织再生动态.

主要成果:

  • 确定干细胞流动性受损和血管新生不充分是与年龄相关的再生衰退的关键因素.
  • 发现了一组Arg1+巨细胞的子集,这些巨细胞在年轻人中被激活,但在老年再生组织中被抑制.
  • 在再生过程中揭示了与年龄相关的免疫反应的差异.

结论:

  • 衰老会通过特定的细胞缺陷损害再生,包括干细胞功能和血管化.
  • Arg1+巨体代表了一个关键的免疫成分,其失调有助于降低衰老中的再生能力.
  • 这项研究为未来的治疗策略提供了宝贵的单细胞资源,以增强老年人的再生能力.