相关实验视频
Updated: Feb 7, 2026

11:34
Single-cell RNA Sequencing and Analysis of Human Pancreatic Islets
Published on: July 18, 2019
17.1K
单细胞RNA测序揭示共体微生物扩大了小鼠肺中的性别特异性免疫编程
bioRxiv : the preprint server for biology
|February 6, 2026
概括
微生物暴露扩大了肺免疫的性别差异,男性显示出更多的髓状细胞和炎症,而女性具有更多的淋巴细胞. 这些差异在没有细菌的小鼠中减少.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 已知呼吸道疾病的性别差异,但免疫学驱动因素尚不清楚.
- 开始性微生物对性别特异性肺免疫的影响尚未被探索.
- 性激素影响免疫细胞功能,但微生物相互作用是关键.
研究的目的:
- 为了研究共生微生物如何塑造性别特异的肺免疫反应.
- 为了在不同的微生物条件下比较雄性和雌性小鼠的肺免疫细胞概况.
主要方法:
- 使用单细胞RNA测序 (scRNAseq) 和流细胞计.
- 从雄性和雌性小鼠的肺免疫细胞进行了分析.
- 小鼠在特定的无病原体 (SPF) 或无细菌 (GF) 条件下安置.
主要成果:
- 在SPF雄性中,骨髓状细胞 (单细胞,巨细胞) 和炎症介导体 (S100a8,S100a9,Il1b) 的增加,TNF和干扰素 (IFN) 途径的丰富.
- SPF女性的淋巴细胞 (T细胞,NK细胞) 频率较高.
- 这些基于性别的免疫差异在GF小鼠中基本上不存在,但雌性NK细胞的丰富性持续存在,表明微生物群独立的因素.
结论:
- 共生微生物放大了肺免疫的本质性性别差异.
- 外在 (微生物) 和内在 (与性别相关) 的因素相互作用,形成肺粘膜免疫.
- 微生物群独立的因素也有助于性别特异性免疫编程.
更多相关视频
06:36Author Spotlight: Isolating and Analyzing Intestinal Cells of Zebrafish Larvae for Investigating Transcriptomic Aspects of Gastrointestinal Development
Published on: November 10, 2023
2.8K
09:49Isolation of Region-specific Microglia from One Adult Mouse Brain Hemisphere for Deep Single-cell RNA Sequencing
Published on: December 3, 2019
11.7K
相关概念视频
Operational Amplifiers
2.0K
The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
2.0K
MOSFET Amplifiers
522
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
522
BJT Amplifiers
999
Bipolar Junction Transistors (BJTs) are pivotal components in amplifier circuits, functioning as voltage-controlled current sources in their active region. This characteristic allows them to efficiently control the collector current through variations in the base-emitter voltage. Essentially, BJTs amplify power due to their ability to take a weak input signal and output a much stronger signal.
In BJT amplifier configurations, particularly in common-emitter setups, the transistor's role...
In BJT amplifier configurations, particularly in common-emitter setups, the transistor's role...
999
RNA Stability
35.8K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.8K
Alternative RNA Splicing
25.2K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
25.2K
What is the Immune System?
130.5K
Overview
130.5K