Ferritin1-mediated ferroptosis participates in granular acini degeneration of Haemaphysalis longicornis salivary glands
文献类型： 外文期刊
第一作者： Yuan, Dongqi
作者： Yuan, Dongqi;Chen, Songqin;Zhou, Yongzhi;Cao, Jie;Zhang, Houshuang;Wang, Yanan;Zhou, Jinlin
作者机构：
关键词： Tick; Ferritin 1; Salivary gland degeneration; Ferroptosis
期刊名称：TICKS AND TICK-BORNE DISEASES （ 影响因子：3.4； 五年影响因子：3.2 ）
ISSN： 1877-959X
年卷期： 2025 年 16 卷 2 期
页码：
收录情况： SCI
摘要： Ticks (Haemaphysalis longicornis) transmit pathogens to their hosts through their salivary glands during bloodfeeding. The salivary glands of adult parthenogenetic H. longicornis undergo degeneration post-engorgement. Clarifying the molecular mechanisms underlying salivary gland degeneration of H. longicornis is conducive to identifying novel targets for preventing and controlling these widespread vectors. In this study, we investigated the salivary glands of adult parthenogenetic H. longicornis to elucidate the relationship between ferroptosis, irondependent cell death, H. longicornis ferritin 1 (HlFer1) and salivary gland degeneration post-attachment and postengorgement. Fluorescence microscopy, revealed increased iron accumulation, reactive oxygen species, lipid peroxidation, and decreased mitochondrial cristae in the granular acini of H. longicornis salivary glands postengorgement. The results of a qPCR analysis indicated that HlFer1, glutathione peroxidase 4 (GPX4), transferrin (TRF), and high mobility group protein B1 (HMGB1) expression elevated in H. longicornis salivary glands post-attachment and post-engorgement. In vitro culture of H. longicornis salivary glands showed that erastin promotes ferroptosis, while ferrostatin-1 blocks this process. RNA interference (RNAi) targeting HlFer1 promoted ferroptosis in salivary gland granular acini. In conclusion, we demonstrated that HlFer1-induced ferroptosis is a key molecular mechanism underlying the salivary gland granular acini degeneration of H. longicornis. Our findings are important for developing novel preventive measures against H. longicornis as a disease vector.
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