相关实验视频

Updated: Jun 17, 2025

Culturing Lymphocytes in Simulated Microgravity Using a Rotary Cell Culture System

Culturing Lymphocytes in Simulated Microgravity Using a Rotary Cell Culture System

Published on: August 25, 2022

黄金葡萄球菌生理学和Agr定数感应对低剪切模拟微重力的反应

Matthew R Hauserman¹, Leia E Sullivan¹, Kimberly L James²

¹Department of Microbiology and Cell Science, IFAS, University of Florida, Gainesville, Florida, USA.

Journal of bacteriology

|August 9, 2024

概括

模拟的微重力会影响金黄色葡萄球菌的生长和Agr定数感应. 受实验设置影响的氧气可用性会影响毒性因子的表达,这对于太空飞行健康评估至关重要.

科学领域:

微生物学微生物学
空间生物学空间生物学
细菌生理学细菌生理学

背景情况:

金黄色葡萄球菌经常在宇航员和航天器环境中发现.
之前的研究表明,在太空飞行中,金黄色菌的基因表达发生了变化.
了解微重力对金黄色细菌的影响对于宇航员健康至关重要.

研究的目的:

调查低剪切模拟微重力 (LSMMG) 对黄金体生理学和农业活动的影响.
检查氧气供应对S. aureus的影响.
评估地面微重力模型的有效性.

主要方法:

利用旋转细胞培养系统 (RCCS) 模拟微重力.
在LSMMG,正常重力和反向重力条件下比较金黄色菌培养物.
进行了代谢物测定和分泌物分析.

主要成果:

在LSMMG和倒置培养中,表达和生长变化有所下降.
由HARV方向控制的氧气可用性影响了农业活动.
在LSMMG和倒置培养中,病毒性因子降低,低氧蛋白增加.

结论:

哈维氧化膜的方向影响S. aureus生理学和RCCS中的Agr定数感应.
氧气的可用性是微重力模拟中的关键混因素.
结果强调在微重力研究中仔细考虑实验变量.

关键词:

黄金葡萄球菌黄金葡萄球菌辅助基因调节器 (Agr) 的使用高侧面旋转的船只.低剪切模拟的微重力模型中的微重力.氧化氧化的氧化.

更多相关视频

Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response

Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response

Published on: May 23, 2020

Introducing Shear Stress in the Study of Bacterial Adhesion

Introducing Shear Stress in the Study of Bacterial Adhesion

Published on: September 2, 2011

相关概念视频

Bacterial Signaling

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...