Damaged male germ cells induce epididymitis in mice.

Damaged male germ cells induce epididymitis in mice.
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受损的雄性生殖细胞会诱发小鼠附睾炎。

DOI:
10.4103/aja.aja_116_19
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发表时间:
2020-09
影响因子:
2.9
通讯作者:
Han DS
Han DS
中科院分区:
医学2区
文献类型:
--
作者:
Liu WH;Wang F;Yu XQ;Wu H;Gong ML;Chen R;Zhang WJ;Han RQ;Liu AJ;Chen YM;Han DS

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附睾炎可由感染性和非感染性病因引起。虽然微生物感染是感染性附睾炎的原因,但导致非感染性附睾炎的病因仍有待确定。本研究证实雄性生殖细胞(DMGCs)损伤可诱发小鼠附睾炎。腹腔内注射烷化剂白消安可损伤小鼠雄性生殖细胞。注射白消安4周后,在小鼠中观察到附睾炎,其特征在于大量巨噬细胞浸润。附睾炎与DMGC在附睾中的积聚一致。相反,白消安注射到缺乏雄性生殖细胞的小鼠中不会诱发附睾炎。DMGCs诱导附睾上皮细胞(EECs)的先天性免疫应答,从而上调促炎细胞因子如肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)和白细胞介素-1 β(IL-1β),以及趋化因子如单核细胞趋化蛋白-1(MCP-1)、单核细胞趋化蛋白-5(MCP-5)和趋化因子配体-10(CXCL 10)。这些结果表明,雄性生殖细胞损伤可能通过诱导内皮细胞的先天性免疫反应诱导非感染性附睾炎。这些发现为非感染性附睾炎的发病机制提供了新的见解,这可能有助于该病的诊断和治疗。
Epididymitis can be caused by infectious and noninfectious etiological factors. While microbial infections are responsible for infectious epididymitis, the etiological factors contributing to noninfectious epididymitis remain to be defined. The present study demonstrated that damaged male germ cells (DMGCs) induce epididymitis in mice. Intraperitoneal injection of the alkylating agent busulfan damaged murine male germ cells. Epididymitis was observed in mice 4 weeks after the injection of busulfan and was characterized by massive macrophage infiltration. Epididymitis was coincident with an accumulation of DMGCs in the epididymis. In contrast, busulfan injection into mice lacking male germ cells did not induce epididymitis. DMGCs induced innate immune responses in epididymal epithelial cells (EECs), thereby upregulating the pro-inflammatory cytokines such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β), as well as the chemokines such as monocyte chemotactic protein-1 (MCP-1), monocyte chemotactic protein-5 (MCP-5), and chemokine ligand-10 (CXCL10). These results suggest that male germ cell damage may induce noninfectious epididymitis through the induction of innate immune responses in EECs. These findings provide novel insights into the mechanisms underlying noninfectious epididymitis, which might aid in the diagnosis and treatment of the disease.
小鼠支持细胞响应腮腺炎病毒感染而产生的 C-X-C 基序趋化因子配体 10 诱导雄性生殖细胞凋亡。
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