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相关概念视频

Osteoclasts in Bone Remodeling01:31

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Bone Remodeling01:40

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Hormones and Bone Tissue01:17

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
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相关实验视频

Updated: Jul 16, 2025

A Simple Pit Assay Protocol to Visualize and Quantify Osteoclastic Resorption In Vitro
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BAP1通过代谢重编程促进骨质细胞的功能.

Nidhi Rohatgi1, Wei Zou2, Yongjia Li3

  • 1Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA. nidhirohatgi@wustl.edu.

Nature communications
|September 22, 2023
PubMed
概括
此摘要是机器生成的。

在髓状细胞中删除BRCA1关联蛋白1 (Bap1) 阻止了骨质细胞的功能,而不是形成. 这种方法增加了骨质量,为骨质疏松症治疗提供了潜在的策略.

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科学领域:

  • 生物化学 生化学
  • 细胞生物学 细胞生物学
  • 骨生物学 骨生物学 骨生物学

背景情况:

  • 骨质疏松症的治疗往往会减少骨质细胞的数量,抑制骨的形成,并阻碍骨折的预防.
  • 延缓骨质细胞功能,而不是分化,可以保持骨形成,同时减少退化.

研究的目的:

  • 调查二维基基因酶BRCA1相关蛋白1 (BAP1) 在骨质细胞功能和骨代谢中的作用.
  • 确定向骨髓细胞中的BAP1是否可以调节骨质细胞活动和骨质.

主要方法:

  • 产生了特定于骨髓细胞的Bap1缺乏的小鼠 (Bap1∆LysM).
  • 评估了Bap1∆LysM小鼠的骨质细胞形成,细胞骨组织和吸收能力.
  • 分析了BAP1缺乏对骨质细胞表观遗传学和新陈代谢的影响,包括Slc7a11表达和H2Aub占用.

主要成果:

  • 在髓状细胞 (Bap1∆LysM) 中Bap1的删除阻止了骨质细胞的功能,但没有影响形成.
  • Bap1∆LysM骨质细胞体表现出细胞骨组织受损,导致骨质降解减少.
  • 骨质细胞中的BAP1缺乏通过增强的H2Aub促进体占用来调节Slc7a11,改变细胞活性氧物种和线粒体代谢.

结论:

  • BAP1通过表观遗传代谢重编程轴调节骨质细胞的功能.
  • 向骨质细胞中的BAP1为骨质疏松症提供了潜在的治疗策略,减少骨质退化,同时保持骨质形成.