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Dooley NL, Chabikwa TG, Pava Z, Loughland JR, Hamelink J, Berry K, Andrew D, Soon MSF, SheelaNair A, Piera KA, William T, Barber BE, Grigg MJ, Engwerda CR, Lopez JA, Anstey NM, Boyle MJ. Single cell transcriptomics shows that malaria promotes unique regulatory responses across multiple immune cell subsets. Nat Commun 2023; 14:7387. [PMID: 37968278 PMCID: PMC10651914 DOI: 10.1038/s41467-023-43181-7] [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: 11/23/2022] [Accepted: 11/02/2023] [Indexed: 11/17/2023] Open
Abstract
Plasmodium falciparum malaria drives immunoregulatory responses across multiple cell subsets, which protects from immunopathogenesis, but also hampers the development of effective anti-parasitic immunity. Understanding malaria induced tolerogenic responses in specific cell subsets may inform development of strategies to boost protective immunity during drug treatment and vaccination. Here, we analyse the immune landscape with single cell RNA sequencing during P. falciparum malaria. We identify cell type specific responses in sub-clustered major immune cell types. Malaria is associated with an increase in immunosuppressive monocytes, alongside NK and γδ T cells which up-regulate tolerogenic markers. IL-10-producing Tr1 CD4 T cells and IL-10-producing regulatory B cells are also induced. Type I interferon responses are identified across all cell types, suggesting Type I interferon signalling may be linked to induction of immunoregulatory networks during malaria. These findings provide insights into cell-specific and shared immunoregulatory changes during malaria and provide a data resource for further analysis.
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Affiliation(s)
- Nicholas L Dooley
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- School of Environment and Sciences, Griffith University, Brisbane, QLD, Australia
| | | | - Zuleima Pava
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | | | - Julianne Hamelink
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- University of Queensland, Brisbane, QLD, Australia
| | - Kiana Berry
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- Queensland University of Technology, Brisbane, QLD, Australia
| | - Dean Andrew
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Megan S F Soon
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Arya SheelaNair
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Kim A Piera
- Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
| | - Timothy William
- Infectious Diseases Society Kota Kinabalu Sabah-Menzies School of Health Research Program, Kota Kinabalu, Sabah, Malaysia
- Subang Jaya Medical Centre, Selangor, Malaysia
| | - Bridget E Barber
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
- Infectious Diseases Society Kota Kinabalu Sabah-Menzies School of Health Research Program, Kota Kinabalu, Sabah, Malaysia
| | - Matthew J Grigg
- Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
- Infectious Diseases Society Kota Kinabalu Sabah-Menzies School of Health Research Program, Kota Kinabalu, Sabah, Malaysia
| | | | - J Alejandro Lopez
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- School of Environment and Sciences, Griffith University, Brisbane, QLD, Australia
| | - Nicholas M Anstey
- Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
- Infectious Diseases Society Kota Kinabalu Sabah-Menzies School of Health Research Program, Kota Kinabalu, Sabah, Malaysia
| | - Michelle J Boyle
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.
- School of Environment and Sciences, Griffith University, Brisbane, QLD, Australia.
- University of Queensland, Brisbane, QLD, Australia.
- Queensland University of Technology, Brisbane, QLD, Australia.
- Burnet Institute, Melbourne, VIC, Australia.
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Latini A, De Benedittis G, Colafrancesco S, Perricone C, Novelli G, Novelli L, Priori R, Ciccacci C, Borgiani P. PCSK3 Overexpression in Sjögren's Syndrome Patients May Be Regulated by rs4932178 SNP in Its Promoter Region and Correlates with IFN-γ Gene Expression. Genes (Basel) 2023; 14:genes14050981. [PMID: 37239341 DOI: 10.3390/genes14050981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND The PCSK3 gene encodes for the protease enzyme Furin, which promotes proteolytic maturation of important regulators of the immune response, and also enhances the secretion of interferon-γ (IFN). Several studies have suggested its possible involvement in the pathogenesis of chronic inflammatory diseases. METHODS We investigated the PCSK3 gene expression level in peripheral blood mononuclear cells isolated from Sjögren's Syndrome (SS) patients and healthy controls and we evaluated a possible correlation with IFN-γ gene expression. Moreover, we also explored the variability of two PCSK3 genetic polymorphisms (rs4932178 and rs4702) to evaluate a possible association between these polymorphisms and the expression levels of this gene. RESULTS We observed, by RT-qPCR, that the PCSK3 expression level was significantly higher in SS patients compared to the controls (p = 0.028), and we confirmed a positive correlation between PCSK3 and IFN-γ expression levels (p < 0.001). Moreover, we reported that the variant homozygous genotype of rs4932178 SNP is associated with a higher expression of the PCSK3 gene (p = 0.038) and with the SS susceptibility (p = 0.016). CONCLUSIONS Our data suggest that Furin could play a role in SS development, also promoting IFN-γ secretion.
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Affiliation(s)
- Andrea Latini
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Giada De Benedittis
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Serena Colafrancesco
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, 00133 Rome, Italy
| | - Carlo Perricone
- Rheumatology, Department of Medicine, University of Perugia, Piazzale Giorgio Menghini 1, 06129 Perugia, Italy
| | - Giuseppe Novelli
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, 00133 Rome, Italy
- IRCCS NEUROMED, 86077 Pozzilli, Italy
- School of Medicine, Department of Pharmacology, University of Nevada, Reno, NV 89557, USA
| | - Lucia Novelli
- UniCamillus, Saint Camillus International University of Health Sciences, 00131 Rome, Italy
| | - Roberta Priori
- UniCamillus, Saint Camillus International University of Health Sciences, 00131 Rome, Italy
- AOU Policlinico Umberto 1, 00161 Rome, Italy
| | - Cinzia Ciccacci
- UniCamillus, Saint Camillus International University of Health Sciences, 00131 Rome, Italy
| | - Paola Borgiani
- Department of Biomedicine and Prevention, Genetics Section, University of Rome Tor Vergata, 00133 Rome, Italy
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