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Li H, Ma Q, Ren J, Guo W, Feng K, Li Z, Huang T, Cai YD. Immune responses of different COVID-19 vaccination strategies by analyzing single-cell RNA sequencing data from multiple tissues using machine learning methods. Front Genet 2023; 14:1157305. [PMID: 37007947 PMCID: PMC10065150 DOI: 10.3389/fgene.2023.1157305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023] Open
Abstract
Multiple types of COVID-19 vaccines have been shown to be highly effective in preventing SARS-CoV-2 infection and in reducing post-infection symptoms. Almost all of these vaccines induce systemic immune responses, but differences in immune responses induced by different vaccination regimens are evident. This study aimed to reveal the differences in immune gene expression levels of different target cells under different vaccine strategies after SARS-CoV-2 infection in hamsters. A machine learning based process was designed to analyze single-cell transcriptomic data of different cell types from the blood, lung, and nasal mucosa of hamsters infected with SARS-CoV-2, including B and T cells from the blood and nasal cavity, macrophages from the lung and nasal cavity, alveolar epithelial and lung endothelial cells. The cohort was divided into five groups: non-vaccinated (control), 2*adenovirus (two doses of adenovirus vaccine), 2*attenuated (two doses of attenuated virus vaccine), 2*mRNA (two doses of mRNA vaccine), and mRNA/attenuated (primed by mRNA vaccine, boosted by attenuated vaccine). All genes were ranked using five signature ranking methods (LASSO, LightGBM, Monte Carlo feature selection, mRMR, and permutation feature importance). Some key genes that contributed to the analysis of immune changes, such as RPS23, DDX5, PFN1 in immune cells, and IRF9 and MX1 in tissue cells, were screened. Afterward, the five feature sorting lists were fed into the feature incremental selection framework, which contained two classification algorithms (decision tree [DT] and random forest [RF]), to construct optimal classifiers and generate quantitative rules. Results showed that random forest classifiers could provide relative higher performance than decision tree classifiers, whereas the DT classifiers provided quantitative rules that indicated special gene expression levels under different vaccine strategies. These findings may help us to develop better protective vaccination programs and new vaccines.
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Affiliation(s)
- Hao Li
- College of Food Engineering, Jilin Engineering Normal University, Changchun, China
| | - Qinglan Ma
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Jingxin Ren
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Wei Guo
- Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences (SIBS), Shanghai Jiao Tong University School of Medicine (SJTUSM), Chinese Academy of Sciences (CAS), Shanghai, China
| | - Kaiyan Feng
- Department of Computer Science, Guangdong AIB Polytechnic College, Guangzhou, China
| | - Zhandong Li
- College of Food Engineering, Jilin Engineering Normal University, Changchun, China
| | - Tao Huang
- Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yu-Dong Cai
- School of Life Sciences, Shanghai University, Shanghai, China
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Thankam FG, Huynh J, Fang W, Chen Y, Agrawal DK. Exosomal-ribosomal proteins-driven heterogeneity of epicardial adipose tissue derived stem cells under ischemia for cardiac regeneration. J Tissue Eng Regen Med 2022; 16:396-408. [PMID: 35142442 DOI: 10.1002/term.3289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/19/2022] [Accepted: 01/31/2022] [Indexed: 12/22/2022]
Abstract
Extracellular ribosomal proteins secreted in exosomes elicit biological/regenerative responses; however, ribosomal proteins contained in the exosomes of ischemia-challenged epicardial adipose tissue-derived stem cells (EATDS) remain unexplored. This study focuses on the identification of ribosomal proteins in the exosomes of ischemia-challenged EATDS and their sub-populations based on the key ribosomal proteins using single-cell genomics. Exosomes were isolated from control, ischemic (ISC), and reperfused (ISC/R) EATDS harvested from hyperlipidemic microswine, and the proteins were detected using Liquid chromatography with tandem mass spectrometry (LC-MS/MS). One hundred ninety-nine proteins and 177 proteins were detected in ISC and ISC/R groups, respectively with significant fold-change compared to controls. Five ribosomal proteins, RPL10A, 40SRPS18, 40SRPS30, 60SRPL14, and 40SRPSA, were significant owing to their abundance based on LC-MS/MS data. Expression of these proteins, except RPL10A, at transcript and protein levels were lower in ISC group compared to the control. scRNAseq analysis revealed EATDS heterogeneity based on the upregulation of 40SRPSA, 40SRPL18, and 40SRPS18. Pro-inflammatory sub-populations upregulated CCL5, anti-inflammatory sub-population upregulated IL-11, proliferative sub-population upregulated cell cycle and DNA replication mediators, and non-proliferative population downregulated the cell cycle and DNA replication mediators. Overall, the functional role of extracellular ribosomal proteins in driving unique phenotypes of EATDS population offers promise for designing effective translational approaches for myocardial regeneration.
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Affiliation(s)
- Finosh G Thankam
- Department of Translational Research, Western University of Health Sciences, Pomona, California, USA
| | - James Huynh
- Department of Translational Research, Western University of Health Sciences, Pomona, California, USA
| | - William Fang
- Department of Translational Research, Western University of Health Sciences, Pomona, California, USA
| | - Yu Chen
- Molecular Instrumentation Center, University of California-Los Angeles, Los Angeles, California, USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences, Pomona, California, USA
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Neutrophils in Streptococcus suis Infection: From Host Defense to Pathology. Microorganisms 2021; 9:microorganisms9112392. [PMID: 34835517 PMCID: PMC8624082 DOI: 10.3390/microorganisms9112392] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/11/2021] [Accepted: 11/17/2021] [Indexed: 01/02/2023] Open
Abstract
Streptococcus suis is a swine pathogen and zoonotic agent responsible for economic losses to the porcine industry. Infected animals may develop meningitis, arthritis, endocarditis, sepsis and/or sudden death. The pathogenesis of the infection implies that bacteria breach mucosal host barriers and reach the bloodstream, where they escape immune-surveillance mechanisms and spread throughout the organism. The clinical manifestations are mainly the consequence of an exacerbated inflammation, defined by an exaggerated production of cytokines and recruitment of immune cells. Among them, neutrophils arrive first in contact with the pathogens to combat the infection. Neutrophils initiate and maintain inflammation, by producing cytokines and deploying their arsenal of antimicrobial mechanisms. Furthermore, neutrophilic leukocytosis characterizes S. suis infection, and lesions of infected subjects contain a large number of neutrophils. Therefore, this cell type may play a role in host defense and/or in the exacerbated inflammation. Nevertheless, a limited number of studies addressed the role or functions of neutrophils in the context of S. suis infection. In this review, we will explore the literature about S. suis and neutrophils, from their interaction at a cellular level, to the roles and behaviors of neutrophils in the infected host in vivo.
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Transcriptome Analysis Reveals Possible Immunomodulatory Activity Mechanism of Chlorella sp. Exopolysaccharides on RAW264.7 Macrophages. Mar Drugs 2021; 19:md19040217. [PMID: 33919822 PMCID: PMC8070752 DOI: 10.3390/md19040217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 12/21/2022] Open
Abstract
In this study, the exopolysaccharides of Chlorella sp. (CEP) were isolated to obtain the purified fraction CEP4. Characterization results showed that CEP4 was a sulfated heteropolysaccharide. The main monosaccharide components of CEP4 are glucosamine hydrochloride (40.8%) and glucuronic acid (21.0%). The impact of CEP4 on the immune activity of RAW264.7 macrophage cytokines was detected, and the results showed that CEP4 induced the production of nitric oxide (NO), TNF-α, and IL-6 in a dose-dependent pattern within a range of 6 μg/mL. A total of 4824 differentially expressed genes (DEGs) were obtained from the results of RNA-seq. Gene enrichment analysis showed that immune-related genes such as NFKB1, IL-6, and IL-1β were significantly upregulated, while the genes RIPK1 and TLR4 were significantly downregulated. KEGG pathway enrichment analysis showed that DEGs were significantly enriched in immune-related biological processes, including toll-like receptor (TLR) signaling pathway, cytosolic DNA-sensing pathway, and C-type lectin receptor signaling pathway. Protein–protein interaction (PPI) network analysis showed that HSP90AB1, Rbx1, ISG15, Psmb6, Psmb3, Psmb8, PSMA7, Polr2f, Rpsa, and NEDD8 were the hub genes with an essential role in the immune activity of CEP4. The preliminary results of the present study revealed the potential mechanism of CEP4 in the immune regulation of RAW264.7 macrophages, suggesting that CEP4 is a promising immunoregulatory agent.
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Liu H, Lei S, Jia L, Xia X, Sun Y, Jiang H, Zhu R, Li S, Qu G, Gu J, Sun C, Feng X, Han W, Langford PR, Lei L. Streptococcus suis serotype 2 enolase interaction with host brain microvascular endothelial cells and RPSA-induced apoptosis lead to loss of BBB integrity. Vet Res 2021; 52:30. [PMID: 33618766 PMCID: PMC7898445 DOI: 10.1186/s13567-020-00887-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/23/2020] [Indexed: 11/10/2022] Open
Abstract
Host proteins interacting with pathogens are receiving more attention as potential therapeutic targets in molecular medicine. Streptococcus suis serotype 2 (SS2) is an important cause of meningitis in both humans and pigs worldwide. SS2 Enolase (Eno) has previously been identified as a virulence factor with a role in altering blood brain barrier (BBB) integrity, but the host cell membrane receptor of Eno and The mechanism(s) involved are unclear. This study identified that SS2 Eno binds to 40S ribosomal protein SA (RPSA) on the surface of porcine brain microvascular endothelial cells leading to activation of intracellular p38/ERK-eIF4E signalling, which promotes intracellular expression of HSPD1 (heat-shock protein family D member 1), and initiation of host-cell apoptosis, and increased BBB permeability facilitating bacterial invasion. This study reveals novel functions for the host-interactional molecules RPSA and HSPD1 in BBB integrity, and provides insight for new therapeutic strategies in meningitis.
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Affiliation(s)
- Hongtao Liu
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Siyu Lei
- School of Basic Medicine, Jilin University, Changchun, 130021, China
| | - Li Jia
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Xiaojing Xia
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Yingying Sun
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Hexiang Jiang
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Rining Zhu
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Shuguang Li
- Shandong Binzhou Animal Science and Veterinary Medicine Academy, Binzhou, Shandong, 256600, People's Republic of China
| | - Guanggang Qu
- Shandong Binzhou Animal Science and Veterinary Medicine Academy, Binzhou, Shandong, 256600, People's Republic of China
| | - Jingmin Gu
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Changjiang Sun
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Xin Feng
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Wenyu Han
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
| | - Paul R Langford
- Section of Paediatric Infectious Disease, Imperial College London, London, W2 1PG, UK
| | - Liancheng Lei
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China. .,College of Animal Science, Yangtze University, Jingzhou, Hubei, 434023, People's Republic of China.
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