相关实验视频

Updated: May 29, 2025

Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation

Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation

Published on: December 26, 2017

激活PGC-1α以增强菌根菌感染中的巨细胞免疫功能

Joel R Frandsen¹, Zhihong Yuan¹, Brahmchetna Bedi²

¹Division of Pulmonary, Critical Care & Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America.

|February 6, 2025

概括

非结核菌 (NTM) 感染会损害巨细胞的线粒体,损害免疫反应. 通过过氧酶增殖器激活受体马协激活剂-1α (PGC-1α) 和线粒体转录因子A (TFAM) 恢复线粒体功能,可以增强细菌清除.

科学领域:

免疫学免疫学免疫学
微生物学微生物学
细胞生物学细胞生物学

背景情况:

非结核性菌根菌 (NTM) 感染在全球范围内不断增加,因抗菌素耐药性而复杂化.
宿主对NTM感染的免疫反应,特别是巨细胞的功能,仍然不太了解.
NTM感染破坏了巨细胞的线粒体容量,损害了ATP的产生,免疫反应和细菌清除.

研究的目的:

研究NTM感染对巨细胞线粒体功能的影响.
阐明过氧体增殖器激活受体马协活性剂-1α (PGC-1α) 和线粒体转录因子A (TFAM) 在NTM诱导的免疫功能障碍中的作用.
探索药理学策略,以恢复巨细胞对NTM的免疫功能.

主要方法:

巨细胞被NTM感染,以评估线粒体损伤和生物能变化.
在受感染的巨细胞中分析了PGC-1α和TFAM的表达水平.
药理学药物被用于拯救PGC-1α和TFAM表达,并评估巨细胞免疫功能的恢复.

主要成果:

NTM感染引发了显著的线粒体损伤,并破坏了巨细胞中的生物能量.
感染导致关键线粒体调节剂PGC-1α和TFAM的表达减少.
通过药理恢复PGC-1α和TFAM表达,成功恢复了巨细胞的免疫功能.

结论:

通过破坏线粒体和减少PGC-1α和TFAM表达,NTM感染会损害巨细胞免疫力.
通过药理学向PGC-1α和TFAM来增强线粒体功能,这是一种新的治疗策略.
这种方法有望通过加强宿主免疫防御来对抗NTM感染.

更多相关视频

Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes

Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes

Published on: May 31, 2018

Author Spotlight: Optimizing CFU Determination for Efficient Assessment of TB Vaccine Efficacy and Antigen Presentation Analysis

Author Spotlight: Optimizing CFU Determination for Efficient Assessment of TB Vaccine Efficacy and Antigen Presentation Analysis

Published on: July 28, 2023

相关概念视频

Defense Against Bacterial Pathogens

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...

Immune Surveillance by NK Cells and Phagocytes

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...

Cell-mediated Immune Responses

Cell-mediated Immune Responses