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Tan S, Li S, Min Y, Gisterå A, Moruzzi N, Zhang J, Sun Y, Andersson J, Malmström RE, Wang M, Berggren PO, Schlisio S, Liao W, Ketelhuth DFJ, Ma C, Li N. Platelet factor 4 enhances CD4 + T effector memory cell responses via Akt-PGC1α-TFAM signaling-mediated mitochondrial biogenesis. J Thromb Haemost 2020; 18:2685-2700. [PMID: 32671959 DOI: 10.1111/jth.15005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/10/2020] [Accepted: 07/08/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Cell metabolism drives T cell functions, while platelets regulate overall CD4+ T cell immune responses. OBJECTIVE To investigate if platelets influence cell metabolism and thus regulate CD4+ T effector memory cell (Tem) responses. METHODS Human CD4+ Tem cells were activated with αCD3/αCD28 and cultured without or with platelets or platelet-derived mediators. RESULTS Polyclonal stimulation induced rapid and marked Th1 and Treg cell activation of CD4+ Tem cells. Platelet co-culture enhanced Th1 response transiently, while it persistently enhanced Treg cell activation of Tem cells, with an enhancement that plateaued by day 3. Platelet factor 4 (PF4) was the key platelet-derived mediator regulating CD4+ Tem cell responses, which involved cellular metabolisms as indicated by mass spectrometric analyses. PF4 exerted its effects via its receptor CXCR3, attenuated Akt activity, and reduced PGC1α phosphorylation, and resulted in elevations of PGC1α function and mitochondrial transcription factor A (TFAM) synthesis. The latter increased mitochondrial biogenesis, and subsequently enhanced Th1 and Treg responses. Consistent with these observations, inhibition of mitochondrial function by rotenone counteracted the enhancements by recombinant PF4, and TFAM overexpression by TFAM-adenovirus infection mimicked PF4 effects. Furthermore, increased mitochondrial mass elevated oxygen consumption, and enhanced adenosine triphosphate and reactive oxygen species production, which, in turn, stimulated Th1 (T-bet) and Treg (FoxP3) transcription factor expression and corresponding CD4+ T effector cell responses. CONCLUSIONS Platelets enhance CD4+ T cell responses of Tem cells through PF4-dependent and Akt-PGC1α-TFAM signaling-mediated mitochondrial biogenesis. Hence, PF4 may be a promising intervention target of platelet-regulated immune responses.
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Affiliation(s)
- Shuai Tan
- Department of Medicine-Solna, Clinical Epidemiology Unit, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - Shuijie Li
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Yanan Min
- Department of Medicine-Solna, Clinical Epidemiology Unit, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - Anton Gisterå
- Department of Medicine-Solna, Cardiovascular Medicine Unit, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Noah Moruzzi
- Department of Molecular Medicine and Surgery, Rolf Ruft Research Center, Karolinska Institutet, Stockholm, Sweden
| | - Junhao Zhang
- Department of Medicine-Solna, Clinical Epidemiology Unit, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yang Sun
- Shandong University Cheeloo Medical College, Institute of Immunology, Jinan, China
| | - John Andersson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Rickard E Malmström
- Department of Medicine-Solna, Clinical Epidemiology Unit, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
- Department of Laboratory Medicine, Clinical Pharmacology, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Miao Wang
- Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Per-Olof Berggren
- Department of Molecular Medicine and Surgery, Rolf Ruft Research Center, Karolinska Institutet, Stockholm, Sweden
| | - Susanne Schlisio
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Daniel F J Ketelhuth
- Department of Medicine-Solna, Cardiovascular Medicine Unit, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Chunhong Ma
- Shandong University Cheeloo Medical College, Institute of Immunology, Jinan, China
| | - Nailin Li
- Department of Medicine-Solna, Clinical Epidemiology Unit, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
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