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Inflammation Research
Published in:

09-05-2024 | Original Research Paper

Tissue-resident C1q + macrophages exert anti-aging potential through the Sirt1 pathway

Authors: Liang Liu, Lingjuan Zhu, Qian Liang, Lingling Yu, Longlong Hu, Yun Yu, Xiaoshu Cheng, Huihui Bao

Published in: Inflammation Research | Issue 7/2024

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Abstract

Objective

Resident immune cells are at the forefront of sensory organ-specific signals, and changes in these cells are closely related to the aging process. The Sirt pathway can regulate NAD + metabolism during aging, thereby affecting the accumulation of ROS. However, the role of the Sirt pathway in resident immune cells in aged tissues is currently unclear.

Methods

We investigated Sirt1 signalling in resident immune cells during chronic inflammation in an aged mouse model. Integrated single-cell RNA sequencing data from young and aged mice were used to refine the characterization of immune cells in aged tissues

Results

We found that C1q + macrophages could affect chronic inflammation during aging. C1q + macrophages acted in an opposing manner to Il1b + macrophages and were responsible for anti-inflammatory effects during aging. Sirt1 agonists inhibited the decrease in C1qb in macrophages during aging, and anti-aging drugs could affect the expression of C1qb in macrophages via the Sirt1 pathway.

Conclusions

In this study, we first identified the relevance of C1q + macrophages in chronic inflammation during aging. The potential anti-aging effect of C1q + macrophages was mediated by the Sirt1 pathway, suggesting new strategies for aging immunotherapy.
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Metadata
Title
Tissue-resident C1q + macrophages exert anti-aging potential through the Sirt1 pathway
Authors
Liang Liu
Lingjuan Zhu
Qian Liang
Lingling Yu
Longlong Hu
Yun Yu
Xiaoshu Cheng
Huihui Bao
Publication date
09-05-2024
Publisher
Springer International Publishing
Published in
Inflammation Research / Issue 7/2024
Print ISSN: 1023-3830
Electronic ISSN: 1420-908X
DOI
https://doi.org/10.1007/s00011-024-01883-8

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