基因负和基因阳性益生菌在工程生物材料中的适应
Varun Sai Tadimarri1,2, Tanya Amit Tyagi1,2, Cao Nguyen Duong1
1INM - Leibniz Institute for New Materials, Saarland University, Campus D2 2, Saarbrücken 66123, Germany.
ACS biomaterials science & engineering
|May 13, 2025
概括
在水凝中的机械限制会以不同的方式影响细菌. 大肠杆菌殖民地生长和形态受硬度的影响,而这两种物种的蛋白质产量增加,硬度更高,显示出对工程生物材料的明显适应.
科学领域:
- 生物材料科学 生物材料科学
- 微生物学 微生物学
- 合成生物学 合成生物学
背景情况:
- 将微生物封装在矩阵中对于工程生物材料至关重要.
- 空间限制和矩阵力学对微生物行为的影响尚未得到充分理解.
- 在相同的限制下对不同细菌物种进行比较研究是有限的.
研究的目的:
- 为了研究水凝硬度对格兰阴性大肠杆菌和格兰阳性乳球菌植物菌的差异效应.
- 检查机械监禁如何影响细菌生长,新陈代谢和重组基因表达.
- 了解工程生物材料中矩阵特性和细菌生理学的相互作用.
主要方法:
- 在水凝矩阵中封装Escherichia coli Nissle 1917和乳植物菌植物 WCFS1.
- 通过聚合物度和化学交联来操纵水凝刚度.
- 评估细菌生长,殖民地形态,代谢活动 (异热微热度计) 和重组蛋白质生产.
主要成果:
- 大肠杆菌殖民地生长,大小和形态都受到水凝硬度的显著影响.
- 乳植物菌植物体的生长和形态不太受到矩阵刚性的影响.
- 增加的矩阵刚度导致了两种细菌物种更高的重组蛋白质生产.
- 异热微热度测量表明,在对机械限制的反应中,大肠杆菌有明显的代谢适应,与Lactiplantibacillus plantarum不同.
结论:
- 机械监禁对大肠杆菌和乳植物菌有不同的影响,尽管两者都是适应肠道的益生菌.
- 乳植物菌植物对硬度的反应较弱,可能是由于生长速度较慢,细胞壁较厚,使气压力更高.
- 这些发现提供了对矩阵特性如何塑造细菌行为的基本见解,有助于设计用于治疗应用的工程生物材料.
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