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Varespladib attenuates Naja atra-induced acute liver injury via reversing Nrf2 signaling-mediated ferroptosis and mitochondrial dysfunction. Varespladib通过逆转Nrf2信号介导的铁下垂和线粒体功能障碍,减轻Naja atra诱导的急性肝损伤。
IF 5.2 2区 生物学
Redox Report Pub Date : 2025-12-01 Epub Date: 2025-05-21 DOI: 10.1080/13510002.2025.2507557
Jiahao Liu, Linfeng Wang, Mengxia Xie, Wenjie Zhao, Jiaqi Sun, Yuji Jin, Meiling Liu, Jianqi Zhao, Lixia Cheng, Cheng Wen, Xiaowen Bi, Chunhong Huang
{"title":"Varespladib attenuates <i>Naja atra</i>-induced acute liver injury via reversing Nrf2 signaling-mediated ferroptosis and mitochondrial dysfunction.","authors":"Jiahao Liu, Linfeng Wang, Mengxia Xie, Wenjie Zhao, Jiaqi Sun, Yuji Jin, Meiling Liu, Jianqi Zhao, Lixia Cheng, Cheng Wen, Xiaowen Bi, Chunhong Huang","doi":"10.1080/13510002.2025.2507557","DOIUrl":"10.1080/13510002.2025.2507557","url":null,"abstract":"<p><p><b>Objective:</b> To investigate the protective effects of varespladib against <i>Naja atra</i>-induced acute liver injury (ALI) and to elucidate the toxic mechanism of snake venom phospholipase A<sub>2</sub> (SVPLA<sub>2</sub>)-induced hepatic oxidative stress, with a particular focus on the role of Nrf2 signaling and its downstream pathways.<b>Methods:</b> A combination of in vivo and in vitro models of <i>N. atra</i> envenomation was employed to assess liver injury, oxidative stress, and mitochondrial dysfunction. The interaction between SVPLA<sub>2</sub> and Nrf2 was analyzed, and the effects of varespladib treatment on these processes were evaluated using histological analysis, biochemical assays, and molecular techniques targeting oxidative stress, ferroptosis, mitophagy, and apoptosis.<b>Results:</b> Varespladib significantly alleviated <i>N. atra</i>-induced ALI. SVPLA<sub>2</sub> was found to directly bind to Nrf2, leading to severe oxidative stress. This oxidative stress initiated a cascade involving Nrf2-mediated ferroptosis, mitochondrial dysfunction, excessive mitophagy, and mitochondria-dependent apoptosis. Treatment with varespladib effectively reversed these pathological events by inhibiting SVPLA<sub>2</sub> activity.<b>Conclusion:</b> Varespladib shows strong therapeutic potential for <i>N. atra</i> envenomation by targeting SVPLA<sub>2</sub>. Nrf2 was identified as a direct toxic target of SVPLA<sub>2</sub>, and Nrf2-mediated ferroptosis and mitochondrial dysfunction were key mechanisms underlying SVPLA<sub>2</sub>-induced hepatic injury.</p>","PeriodicalId":21096,"journal":{"name":"Redox Report","volume":"30 1","pages":"2507557"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12096701/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144120477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Balancing harm and harmony: Evolutionary dynamics between gut microbiota-derived flagellin and TLR5-mediated host immunity and metabolism. 平衡伤害与和谐:肠道微生物源鞭毛蛋白与tlr5介导的宿主免疫和代谢之间的进化动力学。
IF 5.5 1区 农林科学
Virulence Pub Date : 2025-12-01 Epub Date: 2025-05-30 DOI: 10.1080/21505594.2025.2512035
Boram Seo, Mi Young Lim
{"title":"Balancing harm and harmony: Evolutionary dynamics between gut microbiota-derived flagellin and TLR5-mediated host immunity and metabolism.","authors":"Boram Seo, Mi Young Lim","doi":"10.1080/21505594.2025.2512035","DOIUrl":"10.1080/21505594.2025.2512035","url":null,"abstract":"<p><p>The gut microbiota maintains host health and shapes immune responses through intricate host-microbe interactions. Bacterial flagellin, a key microbe-associated molecular pattern, is recognized by Toll-like receptor 5 (TLR5) and NOD-like receptor family caspase activation and recruitment domain-containing 4 inflammasome. This dual recognition maintains the delicate balance between immune tolerance and activation, thereby influencing health and disease outcomes. Therefore, we explored the structural and functional evolution of bacterial flagellin to elucidate its role in innate and adaptive immune responses, along with its impact on metabolic processes, particularly via TLR5. In this review, we highlight the diagnostic and therapeutic potential of flagellin, including its application in vaccine development, cancer immunotherapy, and microbiome-based therapies. We integrated perspectives from structural biology, immunology, and microbiome research to elucidate the co-evolutionary dynamics between gut microbiota-derived flagellin and host immunity. Our interpretations provide a basis for the development of innovative strategies to improve health and disease management.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":"16 1","pages":"2512035"},"PeriodicalIF":5.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12128667/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extracellular vesicle-derived MicroRNAs as potential therapies for spinal cord and peripheral nerve injuries. 细胞外囊泡衍生的microrna作为脊髓和周围神经损伤的潜在治疗方法。
IF 3.6 3区 生物学
RNA Biology Pub Date : 2025-12-01 Epub Date: 2025-05-30 DOI: 10.1080/15476286.2025.2512618
Young-Ju Lim, Min-Soo Seo, Wook-Tae Park, Sangbum Park, Gun Woo Lee
{"title":"Extracellular vesicle-derived MicroRNAs as potential therapies for spinal cord and peripheral nerve injuries.","authors":"Young-Ju Lim, Min-Soo Seo, Wook-Tae Park, Sangbum Park, Gun Woo Lee","doi":"10.1080/15476286.2025.2512618","DOIUrl":"10.1080/15476286.2025.2512618","url":null,"abstract":"<p><p>Complete nerve regeneration is limited in current therapeutic approaches for spinal cord injuries (SCIs) and peripheral nerve injuries (PNIs). Extracellular vesicles (EVs) and microRNAs (miRNAs) play a pivotal role in intercellular communication by transporting various biomolecules, including miRNAs, to the recipient cells. Thus, they are promising targets for novel neural regeneration drugs. This comprehensive study examined the roles of EV-derived miRNAs in facilitating neural rejuvenation after SCI and PNI. It also explored the mechanisms by which they augment neuroprotection and promote cell viability. It also discusses their translational potential for treating nerve injury and evaluates their potential impact on advancements in nerve resurrection and prospective research in regenerative medicine. The findings may provide effective treatments and improve outcomes, as well as contribute to addressing the direction for the next studies, for the pathologies of SCI and PNI.</p>","PeriodicalId":21351,"journal":{"name":"RNA Biology","volume":"22 1","pages":"1-9"},"PeriodicalIF":3.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12128652/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation analysis of key genes and immune infiltration in visceral adipose tissue and subcutaneous adipose tissue of patients with type 2 diabetes in women. 女性2型糖尿病患者内脏脂肪组织和皮下脂肪组织关键基因与免疫浸润的相关性分析
IF 3.5 4区 生物学
Adipocyte Pub Date : 2025-12-01 Epub Date: 2024-12-24 DOI: 10.1080/21623945.2024.2442419
Qian Shi, Yongxin Li, Chunyan Liu, Mengjie Liang, Hefei Zha, Xin Zhang, Fuchun Zhang
{"title":"Correlation analysis of key genes and immune infiltration in visceral adipose tissue and subcutaneous adipose tissue of patients with type 2 diabetes in women.","authors":"Qian Shi, Yongxin Li, Chunyan Liu, Mengjie Liang, Hefei Zha, Xin Zhang, Fuchun Zhang","doi":"10.1080/21623945.2024.2442419","DOIUrl":"https://doi.org/10.1080/21623945.2024.2442419","url":null,"abstract":"<p><p>Immune cell infiltration into adipose tissue (AT) is a key factor in type 2 diabetes (T2DM). However, research on the impact of fat distribution on immune cells and immune responses in women is still lacking. This study used enrichment, protein-protein interaction network, immune cell infiltration, and correlation analysis to compare the similarities and differences between the transcriptome data of visceral AT (VAT) and subcutprotein-proteinaneous AT (SAT) obtained from the omprehensive database of gene expression in women with non-T2DM and T2DM. DEGs with the same biological function in two types of ATs often exhibited different expression trends. SharedVAT-specific and SAT-specific hub genes were mainly associated with transcription factors, monocyte-macrophage markers, and chemokines, respectively. Immune cells affected by both AT types included monocytes, granulocytes, T and B lymphocytes, and NK cells. VAT affected more immune cells, mainly myeloid cells. Shared hub genes in VAT correlated positively with M1 macrophages, suggesting pro-inflammatory effects, while those in SAT correlated negatively with M1 macrophages and lymphocytes, suggesting anti-inflammatory effects. This study provides a theoretical basis for further understanding the correlation between AT and T2DM in women.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"14 1","pages":"2442419"},"PeriodicalIF":3.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142881051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
tRNA modifications: greasing the wheels of translation and beyond. tRNA修饰:润滑翻译的车轮和超越。
IF 3.6 3区 生物学
RNA Biology Pub Date : 2025-12-01 Epub Date: 2024-12-26 DOI: 10.1080/15476286.2024.2442856
Minjie Zhang, Zhipeng Lu
{"title":"tRNA modifications: greasing the wheels of translation and beyond.","authors":"Minjie Zhang, Zhipeng Lu","doi":"10.1080/15476286.2024.2442856","DOIUrl":"https://doi.org/10.1080/15476286.2024.2442856","url":null,"abstract":"<p><p>Transfer RNA (tRNA) is one of the most abundant RNA types in cells, acting as an adaptor to bridge the genetic information in mRNAs with the amino acid sequence in proteins. Both tRNAs and small fragments processed from them play many nonconventional roles in addition to translation. tRNA molecules undergo various types of chemical modifications to ensure the accuracy and efficiency of translation and regulate their diverse functions beyond translation. In this review, we discuss the biogenesis and molecular mechanisms of tRNA modifications, including major tRNA modifications, writer enzymes, and their dynamic regulation. We also summarize the state-of-the-art technologies for measuring tRNA modification, with a particular focus on 2'-O-methylation (Nm), and discuss their limitations and remaining challenges. Finally, we highlight recent discoveries linking dysregulation of tRNA modifications with genetic diseases.</p>","PeriodicalId":21351,"journal":{"name":"RNA Biology","volume":"22 1","pages":"1-25"},"PeriodicalIF":3.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142897124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Emerging West African Genotype Chikungunya Virus in Mosquito Virome. 蚊子病毒中的新兴西非基孔肯雅病毒基因型。
IF 5.5 1区 农林科学
Virulence Pub Date : 2025-12-01 Epub Date: 2024-12-23 DOI: 10.1080/21505594.2024.2444686
Pengpeng Xiao, Yujia Hao, Yuge Yuan, Wenzhou Ma, Yiquan Li, He Zhang, Nan Li
{"title":"Emerging West African Genotype Chikungunya Virus in Mosquito Virome.","authors":"Pengpeng Xiao, Yujia Hao, Yuge Yuan, Wenzhou Ma, Yiquan Li, He Zhang, Nan Li","doi":"10.1080/21505594.2024.2444686","DOIUrl":"https://doi.org/10.1080/21505594.2024.2444686","url":null,"abstract":"<p><p>We studied the viromes of three dominant mosquito species in Wenzhou, a coastal city in Zhejiang Province, using metavirome sequencing, with 18 viral families identified. Viral sequences were verified by RT-PCR. The JEV E gene was most closely related to the 1988 Korean strain. DENV sequences were most closely related to the 1997 Australian strain. CHIKV-E1-1 was most closely related to the 1983 Senegal strain and belonged to West African genotype CHIKV. Remarkably, this is the first time that a West African genotype of CHIKV has been detected in Zhejiang Province. Mutations in the CHIKV-E1-1 protein A226V may increase infectivity in <i>Ae. albopictus</i>. Three non-conservative mutations of CHIKV-E1-1 (D45H, D70H and V290D) may have an impact on the function. In conclusion, our study reveals the diversity of mosquito-borne viruses and potential emerging outbreaks in the southeast coastal region of China, providing new perspectives for mining the ecological characterization of other important arboviruses.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":"16 1","pages":"2444686"},"PeriodicalIF":5.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142883041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
METTL14 Mediates Glut3 m6A methylation to improve osteogenesis under oxidative stress condition. METTL14介导Glut3 m6A甲基化促进氧化应激条件下的成骨。
IF 5.2 2区 生物学
Redox Report Pub Date : 2025-12-01 Epub Date: 2024-12-31 DOI: 10.1080/13510002.2024.2435241
Ying Wang, Xueying Yu, Fenyong Sun, Yan Fu, Tingting Hu, Qiqing Shi, Qiuhong Man
{"title":"METTL14 Mediates <i>Glut3</i> m6A methylation to improve osteogenesis under oxidative stress condition.","authors":"Ying Wang, Xueying Yu, Fenyong Sun, Yan Fu, Tingting Hu, Qiqing Shi, Qiuhong Man","doi":"10.1080/13510002.2024.2435241","DOIUrl":"https://doi.org/10.1080/13510002.2024.2435241","url":null,"abstract":"<p><strong>Objectives: </strong>Bone remodeling imbalance contributes to osteoporosis. Though current medications enhance osteoblast involvement in bone formation, the underlying pathways remain unclear. This study was aimed to explore the pathways involved in bone formation by osteoblasts, we investigate the protective role of glycolysis and N6-methyladenosine methylation (m6A) against oxidative stress-induced impairment of osteogenesis in MC3T3-E1 cells.</p><p><strong>Methods: </strong>We utilized a concentration of 200 μM hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) to establish an oxidative damage model of MC3T3-E1 cells. Subsequently, we examined the alterations in the m6A methyltransferases (METTL3, METTL14), glucose transporter proteins (GLUT1, GLUT3) and validated m6A methyltransferase overexpression in vitro and in an osteoporosis model. The osteoblast differentiation and osteogenesis-related molecules and serum bone resorption markers were measured by biochemical analysis, Alizarin Red S staining, Western blot and ELISA.</p><p><strong>Results: </strong>H<sub>2</sub>O<sub>2</sub> treatment inhibited glycolysis and osteoblast differentiation in MC3T3-E1 cells. However, when METTL14 was overexpressed, these changes induced by H<sub>2</sub>O<sub>2</sub> could be mitigated. Our findings indicate that METTL14 promotes GLUT3 expression via YTHDF1, leading to the modulation of various parameters in the H<sub>2</sub>O<sub>2</sub>-induced model. Similar positive effects of METTL14 on osteogenesis were observed in an ovariectomized mouse osteoporosis model.</p><p><strong>Discussion: </strong>METTL14 could serve as a potential therapeutic approach for enhancing osteoporosis treatment.</p>","PeriodicalId":21096,"journal":{"name":"Redox Report","volume":"30 1","pages":"2435241"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The highly pathogenic strain of porcine deltacoronavirus disrupts the intestinal barrier and causes diarrhea in newborn piglets. 猪三角冠状病毒的高致病性菌株破坏肠道屏障并引起新生仔猪腹泻。
IF 5.5 1区 农林科学
Virulence Pub Date : 2025-12-01 Epub Date: 2025-01-06 DOI: 10.1080/21505594.2024.2446742
Xin Yao, Wei-Hong Lu, Wen-Ting Qiao, Yu-Qian Zhang, Bao-Ying Zhang, Hui-Xin Li, Jin-Long Li
{"title":"The highly pathogenic strain of porcine deltacoronavirus disrupts the intestinal barrier and causes diarrhea in newborn piglets.","authors":"Xin Yao, Wei-Hong Lu, Wen-Ting Qiao, Yu-Qian Zhang, Bao-Ying Zhang, Hui-Xin Li, Jin-Long Li","doi":"10.1080/21505594.2024.2446742","DOIUrl":"https://doi.org/10.1080/21505594.2024.2446742","url":null,"abstract":"<p><p>Porcine deltacoronavirus (PDCoV) is increasingly prevalent in newborn piglets with diarrhea. With the development of research on the virus and the feasibility of PDCoV cross-species transmission, the biosafety and the development of pig industry have been greatly affected. In this study, a PDCoV strain CH/LNFX/2022 was isolated from diarrheal newborn piglets at a farm in China. A genome-wide based phylogenetic analysis suggests that 97.5% to 99.2% homology existed in the whole genomes of other strains. Five amino acid mutations are seen for the first time in the S protein. By constructing 3D models, it was found that the S1-NTD/CTD and S2-HR-C regions produced structural alterations. Protein functional analysis showed that the structural changes of the three regions changed the epitope of S protein, the O-GalNAc glycosylation site and the 3C-like protease cleavage site. In addition, oral administration of 10<sup>7</sup> TCID<sub>50</sub> CH/LNFX/2022 to newborn piglets successfully reproduced obvious clinical signs of piglets, such as diarrhea and dehydration. Meanwhile, PDCoV antigen was detected by immunofluorescence in the small intestine, and microscopic lesions and intestinal mucosal barrier destruction were detected by histological observation and scanning electron microscopy. Our study confirmed that porcine coronavirus strains increased pathogenicity through evolution, damaged the intestinal barrier of newborn piglets, and caused diarrhea in pigs. This study provided the candidate strains and theoretical basis for establishing the prevention and control system of vaccine and diagnostic methods for piglet diarrhea.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":"16 1","pages":"2446742"},"PeriodicalIF":5.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142932791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Statement of Retraction: Homeodomain-containing gene 10 contributed to breast cancer malignant behaviors by activating Interleukin-6/Janus kinase 2/Signal transducer and activator of transcription 3 pathway. 撤回声明:含有同源结构域的基因10通过激活白介素-6/Janus激酶2/转录途径的信号转导和激活因子参与乳腺癌的恶性行为。
IF 4.2 4区 生物学
Bioengineered Pub Date : 2025-12-01 Epub Date: 2025-04-23 DOI: 10.1080/21655979.2025.2491945
{"title":"Statement of Retraction: Homeodomain-containing gene 10 contributed to breast cancer malignant behaviors by activating Interleukin-6/Janus kinase 2/Signal transducer and activator of transcription 3 pathway.","authors":"","doi":"10.1080/21655979.2025.2491945","DOIUrl":"https://doi.org/10.1080/21655979.2025.2491945","url":null,"abstract":"","PeriodicalId":8919,"journal":{"name":"Bioengineered","volume":"16 1","pages":"2491945"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12026030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144062022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A small RNA from Streptococcus suis epidemic ST7 strain promotes bacterial survival in host blood and brain by enhancing oxidative stress resistance. 来自猪链球菌流行ST7菌株的小RNA通过增强氧化应激抵抗促进宿主血液和大脑中的细菌存活。
IF 5.5 1区 农林科学
Virulence Pub Date : 2025-12-01 Epub Date: 2025-04-16 DOI: 10.1080/21505594.2025.2491635
Zijing Liang, Shuoyue Wang, Xinchi Zhu, Jiale Ma, Huochun Yao, Zongfu Wu
{"title":"A small RNA from <i>Streptococcus suis</i> epidemic ST7 strain promotes bacterial survival in host blood and brain by enhancing oxidative stress resistance.","authors":"Zijing Liang, Shuoyue Wang, Xinchi Zhu, Jiale Ma, Huochun Yao, Zongfu Wu","doi":"10.1080/21505594.2025.2491635","DOIUrl":"https://doi.org/10.1080/21505594.2025.2491635","url":null,"abstract":"<p><p><i>Streptococcus suis</i> is a Gram-positive pathogen causing septicaemia and meningitis in pigs and humans. However, how <i>S. suis</i> maintains a high bacterial load in the blood and brain is poorly understood. In this study, we found that a small RNA rss03 is predominantly present in <i>S. suis</i>, <i>Streptococcus parasuis</i>, and <i>Streptococcus ruminantium</i>, implying a conserved biological function. rss03 with a size of 303 nt mainly exists in <i>S. suis</i> sequence type (ST) 1 and epidemic ST7 strains that are responsible for human infections in China. Using MS2-affinity purification coupled with RNA sequencing (MAPS), proteomics analysis, and CopraRNA prediction, 14 direct targets of rss03 from an ST7 strain were identified. These direct targets mainly involve substance transport, transcriptional regulation, rRNA modification, and stress response. A more detailed analysis reveals that rss03 interacts with the coding region of <i>glpF</i> mRNA, and unexpectedly rss03 protects <i>glpF</i> mRNA from degradation by RNase J1. The GlpF protein is an aquaporin, contributes to <i>S. suis</i> oxidative stress resistance by H<sub>2</sub>O<sub>2</sub> efflux, and facilitates bacterial survival in murine macrophages RAW264.7. Finally, we showed that rss03 and GlpF are required to maintain a high bacterial load in mouse blood and brain. Our study presents the first sRNA targetome in streptococci, enriches the knowledge of sRNA regulation in streptococci, and identifies pathways contributing to <i>S. suis</i> pathogenesis.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":"16 1","pages":"2491635"},"PeriodicalIF":5.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12005413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144037358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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