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相关概念视频

Cell Motility through Blebbing01:16

Cell Motility through Blebbing

Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
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The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.
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Leukocytes are classified into two groups based on the presence or absence of cytoplasmic granules. Granular leukocytes, which contain granules, belong to the myeloid lineage and are divided into three subtypes: neutrophils, eosinophils, and basophils. These cells are roughly spherical and characterized by the granules in their cytoplasm.
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The outermost layers of prokaryotic cells play a critical role in their survival, virulence, and interaction with the environment. These layers, often composed of polysaccharides, polypeptides, or proteins, form protective and adhesive structures that vary in organization and function.Capsules and Slime LayersCapsules are highly organized, tightly bound layers that firmly attach to the bacterial cell wall. Capsules are usually made of polysaccharides, though some are made of polypeptides. These...
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生物活性和可注射的颗粒状水凝包含了脱细胞化细胞外基质.

Daniela Trindade1,2,3,4, Nikolas Di Caprio5, Ana C Maurício2,6

  • 1Centre for Rapid and Sustainable Product Development (CDRSP), Polytechnic of Leiria, Marinha Grande 2030-028, Portugal.

ACS biomaterials science & engineering
|February 23, 2026
PubMed
概括
此摘要是机器生成的。

研究人员开发了可注射颗粒状水凝,将生物活性脱细胞化细胞外基质 (dECM) 与酸结合起来. 这种新型生物材料增强了机械稳定性,并促进了细胞粘附,以便潜在的关节盘 (TMJd) 修复.

关键词:
脱细胞化的细胞外矩阵.有颗粒状的水凝.氨酸是什么? 氨酸是什么?可以注射的注射剂.短关节和关节的时间

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科学领域:

  • 生物材料科学 生物材料科学
  • 组织工程是组织工程.
  • 再生医学是一种再生医学.

背景情况:

  • 脱细胞化外细胞矩阵 (dECM) 为组织修复提供生物活性线索,但缺乏机械强度.
  • 关节盘 (TMJd) 组织具有有限的自然再生能力.
  • 颗粒状水凝提供可注射,机械稳定的微粒用于组织修复.

研究的目的:

  • 将dECM的生物活性与norbornene Hyaluronic Acid (NorHA) 颗粒状水凝的机械稳定性相结合.
  • 为了创建一个可注射和生物活性生物材料用于TMJd修复.
  • 研究dECM度对微凝特性和细胞相互作用的影响.

主要方法:

  • 在NorHA微凝中封装dECM (0.4%和0.8%).
  • 形成具有剪切稀释和自我愈合特性的颗粒状水凝.
  • 通过可见光或间歇性dECM添加进行二次交叉连接.
  • 评估微凝硬度,ECM释放和纤维肌细胞粘附.

主要成果:

  • dECM的结合增加了微凝的刚性,并支持持续的ECM释放.
  • 颗粒状水凝表现出剪切稀释和自我愈合的能力.
  • 嵌入的dECM支持纤维肌细胞粘附,创建一个可注射和生物活性材料.

结论:

  • 开发的dECM-NorHA颗粒状水凝是可注射,生物活性和机械调节的.
  • 这种系统显示了增强纤维软骨组织的修复,如TMJd的承诺.
  • dECM生物活性和颗粒式水凝力学的结合为再生应用提供了一个多功能平台.