相关实验视频

Updated: Jun 11, 2026

In vivo Imaging of Transgenic Leishmania Parasites in a Live Host

In vivo Imaging of Transgenic Leishmania Parasites in a Live Host

Published on: July 27, 2010

在中性粒细胞中依赖NLRP1的Gasdermin D激活控制了皮肤Leishmaniasis

Michiel Goris^1,2, Katiuska Passelli^1,2, Sanam Peyvandi^1,2

¹Department of Immunobiology, University of Lausanne, Epalinges, Switzerland.

|September 9, 2024

概括

墨西哥莱什曼尼菌感染会在中性粒细胞中触发细胞灭绝,细胞死亡过程. 这种中性粒细胞灭对于控制寄生虫负载和减少莱什曼病的严重程度至关重要.

科学领域:

免疫学免疫学免疫学
细胞生物学细胞生物学
寄生虫学的寄生虫学

背景情况:

细胞内病原体通过居住在髓状细胞中来逃避宿主防御.
热致死是一种宿主介导的炎症细胞死亡机制,限制了病原体的复制.
莱什曼尼亚寄生虫利用中性粒细胞作为细胞内生存和传播的利基.

研究的目的:

为了研究在墨西哥莱什曼菌感染期间中性粒细胞中热的作用.
为了确定Gasdermin D (GSDMD) 介导的热是否会调节中性粒细胞中寄生虫诱导的病理.

主要方法:

在中性粒细胞中诱导热的诱导由墨西哥莱什马尼亚.
通过NLRP1和caspase-1激活评估中性粒细胞的烧灭.
使用GSDMD缺陷模型分析中性粒细胞中的寄生虫负担.
在中性衰竭小鼠模型中采用中性粒细胞的转移.

主要成果:

墨西哥虫诱导了中性粒细胞中的NLRP1和卡斯巴-1依赖的GSDMD介导的热.
GSDMD 缺乏导致皮肤中性粒细胞感染在感染后早期增加.
中性粒细胞灭调节中性粒细胞,并控制寄生虫的传播.
在中性粒细胞中条件GSDMD删除会加剧莱什曼病症的病理性.

结论:

中性粒细胞的热是对墨西哥菌的关键宿主防御机制.
中性粒细胞中由GSDMD介导的热死在调节莱什曼病理学方面发挥着关键作用.
向中性粒细胞亡可能是莱什曼病的治疗策略.

更多相关视频

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells

Published on: May 22, 2014

Deciphering the Molecular Mechanism and Function of Pore-Forming Toxins Using Leishmania major

Deciphering the Molecular Mechanism and Function of Pore-Forming Toxins Using Leishmania major

Published on: October 28, 2022

相关概念视频

Leishmaniasis

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...

Antiprotozoal Agents

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...