基于凝甲基基基的性可控制支架的研究进展,用于组织修复和重建
Siyuan Liu1, Guobao Chen1, Zhongmin Chen1
1School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China.
International journal of biological macromolecules
|August 2, 2025
概括
本综述探讨了如何修改凝甲基烯基 (GelMA) 水凝的刚性,影响组织工程的细胞行为. 调的GelMA支架显示出修复骨,皮肤,心脏和神经组织的前景.
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.
- 细胞机械生物学 细胞机械生物学
背景情况:
- 细胞外基质 (ECM) 对组织结构和细胞功能至关重要.
- 矩阵刚度是一个关键的生物物理暗示调节细胞行为.
- 凝甲基烯基 (GelMA) 水凝由于可调节性质,是用于组织工程的多功能生物材料.
研究的目的:
- 系统地审查调节GelMA水凝硬度的策略.
- 通过机械传导讨论GelMA硬度介导的细胞反应的机制.
- 突出在各种组织工程背景下调整硬度的GelMA的应用.
主要方法:
- 关于GelMA硬度调节技术的文献综述.
- 对由矩阵刚度影响的机械传导通路的分析.
- 关于GelMA支架在再生医学中的应用研究的汇编.
主要成果:
- 存在各种方法来调整GelMA刚度,包括交联密度,纳米材料合并,光聚合和生物活性成分集成.
- 凝MA刚性通过整合素信号传递,细胞骨重塑和转录因子活性 (例如,YAP/TAZ) 影响细胞行为.
- 调整硬度的GelMA脚手架在骨,皮肤,心脏和神经组织再生方面表现出巨大潜力.
结论:
- 调节GelMA刚度是组织工程中的一个关键策略,用于生物模拟ECM.
- 了解依赖于性的细胞反应对于设计有效的再生疗法至关重要.
- 未来的研究应该专注于硬度,降解和信号的协同效应,用于GelMA的临床转化.
相关概念视频
01:54Base Excision Repair
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
01:02Long-patch Base Excision Repair
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
02:37Restarting Stalled Replication Forks
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...
02:53Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
01:54Base Excision Repair
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...