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Loy CJ, Servellita V, Sotomayor-Gonzalez A, Bliss A, Lenz JS, Belcher E, Suslovic W, Nguyen J, Williams ME, Oseguera M, Gardiner MA, Choi JH, Hsiao HM, Wang H, Kim J, Shimizu C, Tremoulet AH, Delaney M, DeBiasi RL, Rostad CA, Burns JC, Chiu CY, De Vlaminck I. Plasma cell-free RNA signatures of inflammatory syndromes in children. Proc Natl Acad Sci U S A 2024; 121:e2403897121. [PMID: 39240972 PMCID: PMC11406294 DOI: 10.1073/pnas.2403897121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 07/25/2024] [Indexed: 09/08/2024] Open
Abstract
Inflammatory syndromes, including those caused by infection, are a major cause of hospital admissions among children and are often misdiagnosed because of a lack of advanced molecular diagnostic tools. In this study, we explored the utility of circulating cell-free RNA (cfRNA) in plasma as an analyte for the differential diagnosis and characterization of pediatric inflammatory syndromes. We profiled cfRNA in 370 plasma samples from pediatric patients with a range of inflammatory conditions, including Kawasaki disease (KD), multisystem inflammatory syndrome in children (MIS-C), viral infections, and bacterial infections. We developed machine learning models based on these cfRNA profiles, which effectively differentiated KD from MIS-C-two conditions presenting with overlapping symptoms-with high performance [test area under the curve = 0.98]. We further extended this methodology into a multiclass machine learning framework that achieved 80% accuracy in distinguishing among KD, MIS-C, viral, and bacterial infections. We further demonstrated that cfRNA profiles can be used to quantify injury to specific tissues and organs, including the liver, heart, endothelium, nervous system, and the upper respiratory tract. Overall, this study identified cfRNA as a versatile analyte for the differential diagnosis and characterization of a wide range of pediatric inflammatory syndromes.
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Affiliation(s)
- Conor J Loy
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850
| | - Venice Servellita
- Department of Laboratory Medicine, University of California, San Francisco, CA 94143
| | | | - Andrew Bliss
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850
| | - Joan S Lenz
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850
| | - Emma Belcher
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850
| | - Will Suslovic
- Division of Pediatric Infectious Disease, Children's National Hospital, Washington, DC 20010
| | - Jenny Nguyen
- Department of Laboratory Medicine, University of California, San Francisco, CA 94143
| | - Meagan E Williams
- Division of Pediatric Infectious Disease, Children's National Hospital, Washington, DC 20010
| | - Miriam Oseguera
- Department of Laboratory Medicine, University of California, San Francisco, CA 94143
| | - Michael A Gardiner
- Department of Pediatrics, Rady Children's Hospital-San Diego, San Diego, CA 92123
- Department of Pediatrics, Kawasaki Disease Research Center, University of California San Diego, La Jolla, CA 92093
| | - Jong-Ha Choi
- Division of Infectious Diseases, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30307
- Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA 30322
| | - Hui-Mien Hsiao
- Division of Infectious Diseases, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30307
- Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA 30322
| | - Hao Wang
- Department of Pediatrics, Kawasaki Disease Research Center, University of California San Diego, La Jolla, CA 92093
| | - Jihoon Kim
- Department of Biomedical Informatics and Data Science, Yale School of Medicine, New Haven, CT 06510
| | - Chisato Shimizu
- Department of Pediatrics, Kawasaki Disease Research Center, University of California San Diego, La Jolla, CA 92093
| | - Adriana H Tremoulet
- Department of Pediatrics, Rady Children's Hospital-San Diego, San Diego, CA 92123
- Department of Pediatrics, Kawasaki Disease Research Center, University of California San Diego, La Jolla, CA 92093
| | - Meghan Delaney
- Division of Pediatric Infectious Disease, Children's National Hospital, Washington, DC 20010
- Department of Pediatrics, George Washington University, School of Medicine & Health Sciences, Washington, DC 20052
| | - Roberta L DeBiasi
- Division of Pediatric Infectious Disease, Children's National Hospital, Washington, DC 20010
- Department of Pediatrics, George Washington University, School of Medicine & Health Sciences, Washington, DC 20052
| | - Christina A Rostad
- Division of Infectious Diseases, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30307
- Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA 30322
| | - Jane C Burns
- Department of Pediatrics, Rady Children's Hospital-San Diego, San Diego, CA 92123
- Department of Pediatrics, Kawasaki Disease Research Center, University of California San Diego, La Jolla, CA 92093
| | - Charles Y Chiu
- Department of Laboratory Medicine, University of California, San Francisco, CA 94143
- Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, CA 94158
- Chan-Zuckerberg Biohub, San Francisco, CA 94158
| | - Iwijn De Vlaminck
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850
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Zhang Y, Yuan X, Xu J, Gu H. CircRBM33 induces endothelial dysfunction by targeting the miR-6838-5p/PDCD4 axis affecting blood-brain barrier in mice with cerebral ischemia-reperfusion injury. Clin Hemorheol Microcirc 2023; 85:355-370. [PMID: 37927249 DOI: 10.3233/ch-231776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
BACKGROUND circRNAs (circRNAs) are involved in the process of cerebral ischemia-reperfusion injury (CI/RI). Our study aims to explore circRBM33 in the endothelial function of the blood-brain barrier (BBB). METHODS The mouse middle cerebral artery occlusion model (MCAO) was established and restored to perfusion, and OGD/R-induced endothelial cells were used to simulate CI/RI. circRBM33, miR-6838-5p and PDCD4, as well as Occludin, ZO-1 and Claudin-5 TJs were evaluated by quantitative PCR and Western blot. The ring structure of circRBM33 was verified by RNAse R and actinomycin D experiments. MTT and LDH Cytotoxicity assay determined viability and toxicity, and flow cytometry determined apoptosis rate. Inflammatory cytokines and the number of microglia in brain tissue were measured by ELISA and IHC. The interaction between genes was verified by RIP and dual luciferase reporter assay. RESULTS circRBM33 was a circrRNA present in the cytoplasm and up-regulated in the brain tissue of MCAO mice and OGD/R-induced endothelial cells. Silenced circRBM33 promoted Occludin, ZO-1, and Claudin-5 expression and cell proliferation, and inhibited cytotoxicity, inflammatory response, and apoptosis. Functionally, circRBM33-absorbed miR-6838-5p was involved in regulating PDCD4, leading to endothelial cell dysfunction, and thus affecting the function of the BBB. CONCLUSIONS circRBM33 by mediating miR-6838-5p/PDCD4 axis induces endothelial dysfunction, thereby affecting the BBB in mice with CI/RI.
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Affiliation(s)
- Yanbin Zhang
- Department of Neurology, First People's Hospital of Linping District, Hangzhou City, ZheJiang, China
| | - Xiaodong Yuan
- Department of Neurology, First People's Hospital of Linping District, Hangzhou City, ZheJiang, China
| | - Jie Xu
- Department of Neurology, First People's Hospital of Linping District, Hangzhou City, ZheJiang, China
| | - Huafen Gu
- Department of Neurology, First People's Hospital of Linping District, Hangzhou City, ZheJiang, China
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Wang X, Ma L, Zhang S, Song Q, He X, Wang J. WWP2 ameliorates oxidative stress and inflammation in atherosclerotic mice through regulation of PDCD4/HO-1 pathway. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1057-1067. [PMID: 35983977 PMCID: PMC9828489 DOI: 10.3724/abbs.2022091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
WWP2 is a HECT-type E3 ubiquitin ligase that regulates various physiological and pathological activities by binding to different substrates, but its role in atherosclerosis (AS) remains largely unknown. The objective of the present study is to investigate the role and underlying molecular mechanisms of WWP2 in endothelial injury. We found that WWP2 expression is significantly decreased in Apolipoprotein E (ApoE) -/- mice. Overexpression of WWP2 attenuates oxidative stress and inflammation in AS mice, while knockdown of WWP2 has opposite effects. WWP2 overexpression alleviates oxidized low-density lipoprotein (ox-LDL)-induced human umbilical vein endothelial cell (HUVEC) injury, evidenced by the decreased oxidative stress levels and the secretion of inflammatory cytokines. Programmed cell death 4 (PDCD4) is identified as a potential substrate of WWP2. Co-immunoprecipitation (Co-IP) further demonstrates that WWP2 interacts with PDCD4, which is enhanced by ox-LDL treatment. Furthermore, the level of PDCD4 ubiquitination is significantly increased by WWP2 overexpression under the condition of MG132 treatment, while WWP2 knockdown shows opposite results. Subsequently, rescue experiments demonstrate that WWP2 knockdown further aggravates oxidative stress and inflammation in ox-LDL-treated HUVECs, while knockdown of PDCD4 alleviates this effect. Moreover, the use of sn-protoporphyrin (SnPP), an inhibitor of HO-1 pathway, confirms that PDCD4 enhances endothelial injury induced by ox-LDL through inhibiting HO-1 pathway. In conclusion, our results suggest that WWP2 protects against atherosclerosis progression via the PDCD4/HO-1 pathway, which may provide a novel treatment strategy for atherosclerosis.
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Affiliation(s)
- Xingye Wang
- Department of Structural Cardiologythe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China
| | - Lu Ma
- Department of Graduate SchoolXi’an Shiyou UniversityXi’an710065China
| | - Songlin Zhang
- Department of Structural Cardiologythe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China
| | - Qiang Song
- Department of Structural Cardiologythe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China
| | - Xumei He
- Department of Structural Cardiologythe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China
| | - Jun Wang
- Department of Structural Cardiologythe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China,Correspondence address. Tel: +86-29-85434128; E-mail:
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Upregulation of miR-499a-5p Decreases Cerebral Ischemia/Reperfusion Injury by Targeting PDCD4. Cell Mol Neurobiol 2021; 42:2157-2170. [PMID: 33837492 DOI: 10.1007/s10571-021-01085-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 03/24/2021] [Indexed: 10/21/2022]
Abstract
MiR-499a-5p was significantly downregulated in degenerative tissues and correlated with apoptosis. Nonetheless, the biological function of miR-499a-5p in acute ischemic stroke has been still unclear. In this study, we found that the plasma levels of miR-499a-5p were significantly downregulated in 64 ischemic stroke patients and negatively correlated with the National Institutes of Health Stroke Scale score. Then, we constructed cerebral ischemia/reperfusion (I/R) injury in rats after middle cerebral artery occlusion and subsequent reperfusion and oxygen-glucose deprivation and reoxygenation (OGD/R)-treated SH-SY5Y cell model. Transfection with miR-499a-5p mimic was accomplished by intracerebroventricular injection in the in vivo I/R injury model. We further found that miR-499a-5p overexpression decreased infarct volumes and cell apoptosis in the in vivo I/R stroke model using TTC and TUNEL staining. PDCD4 was a direct target of miR-499a-5p by luciferase report assay and Western blotting. Knockdown of PDCD4 reduced the infarct damage and cortical neuron apoptosis caused by I/R injury. MiR-499a-5p exerted neuroprotective roles mainly through inhibiting PDCD4-mediated apoptosis by CCK-8 assay, LDH release assay, and flow cytometry analysis. These findings suggest that miR-499a-5p might represent a novel target that regulates brain injury by inhibiting PDCD4-mediating apoptosis.
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