The role of murine M1 macrophages from
different sources in unilateral ureteral
obstruction

Xinyu Cui; Yaowen Hu; Genhong Zhang; Li Zhao; Tong Ye; Qingyan Zhang; Jing Liu; Chunming Jiang; Wei Zhu

doi:10.5114/ceji.2023.129975

eISSN: 1644-4124
ISSN: 1426-3912

Central European Journal of Immunology

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2/2023
vol. 48

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abstract:

Experimental immunology

The role of murine M1 macrophages from different sources in unilateral ureteral obstruction

Xinyu Cui

¹

,

Yaowen Hu

¹

,

Genhong Zhang

²

,

Li Zhao

¹

,

Tong Ye

²

,

Qingyan Zhang

³

,

Jing Liu

³

,

Chunming Jiang

³

,

Wei Zhu

^{1, 2, 3, 4}

Department of Nephrology, Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, China
Department of Nephrology, Nanjing Drum Tower Hospital, Clinical College of Jiangsu University, China
Department of Nephrology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, China
Department of Nephrology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, China

Cent Eur J Immunol 2023; 48 (2): 81-91

DOI: https://doi.org/10.5114/ceji.2023.129975

Online publish date: 2023/07/20

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Introduction:
The unilateral ureteral obstruction (UUO) model is the most extensively used model to investigate chronic renal fibrosis. Macrophages play a critical role in the UUO model. We aimed to analyze the phenotype of macrophages from different sources activated in vitro and explore the role of M1 macrophages from various sources in UUO.

Material and methods:
C57BL/6 mice were randomly allocated to five different groups (n = 5 per group): the sham-operated control group, PBS-treated (UUO + PBS) group, bone marrow-derived M1 macrophage-treated (UUO + BM1) group, peritoneal M1 macrophage-treated (UUO + PM1) group, and splenic M1 macrophage-treated (UUO + SPM1) group. After M1 macrophages were injected into the tail vein of UUO-treated mice, renal fibrosis indexes were determined using HE, Masson staining, and α-SMA.

Results:
Compared to those in the UUO + PBS group, the pathological changes were much more severe in the UUO + BM1, UUO + PM1, and UUO + SPM1 groups. Compared to that in the UUO + PBS group, UUO + BM1 group, and UUO + SPM1 group, the collagen area in the UUO + PM1 group was higher at post-UUO day 5 (p < 0.01). The expression of α-SMA in the UUO + PM1 group was higher than that in the UUO + PBS group, UUO + BM1 group, and UUO + SPM1group (p < 0.001).

Conclusions:
The M1 macrophages cultured in vitro were reinjected into mice and aggravated kidney injury and fibrosis. Compared with BM1 and SPM1, PM1 demonstrated a stronger effect on inducing renal injury and fibrosis.

keywords:

The role of murine M1 macrophages from different sources in unilateral ureteral obstruction

Xinyu Cui 1 , Yaowen Hu 1 , Genhong Zhang 2 , Li Zhao 1 , Tong Ye 2 , Qingyan Zhang 3 , Jing Liu 3 , Chunming Jiang 3 , Wei Zhu 1, 2, 3, 4

renal fibrosis, M1 macrophage, obstructive nephropathy, UUO

Xinyu Cui

¹

,

Yaowen Hu

¹

,

Genhong Zhang

²

,

Li Zhao

¹

,

Tong Ye

²

,

Qingyan Zhang

³

,

Jing Liu

³

,

Chunming Jiang

³

,

Wei Zhu

^{1, 2, 3, 4}