Phospholipid scramblase 1: a frontline defense against viral infections
Phospholipid scramblase 1 (PLSCR1) is the most studied member of the phospholipid scramblase protein family. Its main function is to catalyze calcium (Ca2+)-dependent, ATP-independent, bidirectional and non-specific translocation of phospholipids between inner and outer leaflets of plasma membrane....
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Frontiers Media S.A.
2025-04-01
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| Series: | Frontiers in Cellular and Infection Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fcimb.2025.1573373/full |
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| author | Alina X. Yang Carmelissa Norbrun Parand Sorkhdini Yang Zhou |
| author_facet | Alina X. Yang Carmelissa Norbrun Parand Sorkhdini Yang Zhou |
| author_sort | Alina X. Yang |
| collection | DOAJ |
| description | Phospholipid scramblase 1 (PLSCR1) is the most studied member of the phospholipid scramblase protein family. Its main function is to catalyze calcium (Ca2+)-dependent, ATP-independent, bidirectional and non-specific translocation of phospholipids between inner and outer leaflets of plasma membrane. Additionally, PLSCR1 is identified as an interferon-stimulated gene (ISG) with antiviral activities, and its expression can be highly induced by all types of interferons in various viral infections. Indeed, numerous studies have reported the direct antiviral activities of PLSCR1 through interrupting the replication processes of a variety of viruses, including entry of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), nuclear localization of influenza A virus (IAV), and transactivation of human immunodeficiency virus (HIV), Epstein-Barr virus (EBV), human T-cell leukemia virus type-1 (HTLV1), human cytomegalovirus (HCMV) and hepatitis B virus (HBV). In addition to these direct antiviral activities, PLSCR1 also regulates endogenous immune components to defend against viruses in both nonimmune and immune cells. Such activities include potentiation of ISG transcription, activation of JAK/STAT pathway, upregulation of type 3 interferon receptor (IFN-λR1) and recruitment of Toll-like receptor 9 (TLR9). This review aims to summarize the current understanding of PLSCR1’s multiple roles as a frontline defense against viral infections. |
| format | Article |
| id | doaj-art-950b070f4e5740ffa64939e021d91cef |
| institution | DOAJ |
| issn | 2235-2988 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Cellular and Infection Microbiology |
| spelling | doaj-art-950b070f4e5740ffa64939e021d91cef2025-08-20T03:06:42ZengFrontiers Media S.A.Frontiers in Cellular and Infection Microbiology2235-29882025-04-011510.3389/fcimb.2025.15733731573373Phospholipid scramblase 1: a frontline defense against viral infectionsAlina X. YangCarmelissa NorbrunParand SorkhdiniYang ZhouPhospholipid scramblase 1 (PLSCR1) is the most studied member of the phospholipid scramblase protein family. Its main function is to catalyze calcium (Ca2+)-dependent, ATP-independent, bidirectional and non-specific translocation of phospholipids between inner and outer leaflets of plasma membrane. Additionally, PLSCR1 is identified as an interferon-stimulated gene (ISG) with antiviral activities, and its expression can be highly induced by all types of interferons in various viral infections. Indeed, numerous studies have reported the direct antiviral activities of PLSCR1 through interrupting the replication processes of a variety of viruses, including entry of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), nuclear localization of influenza A virus (IAV), and transactivation of human immunodeficiency virus (HIV), Epstein-Barr virus (EBV), human T-cell leukemia virus type-1 (HTLV1), human cytomegalovirus (HCMV) and hepatitis B virus (HBV). In addition to these direct antiviral activities, PLSCR1 also regulates endogenous immune components to defend against viruses in both nonimmune and immune cells. Such activities include potentiation of ISG transcription, activation of JAK/STAT pathway, upregulation of type 3 interferon receptor (IFN-λR1) and recruitment of Toll-like receptor 9 (TLR9). This review aims to summarize the current understanding of PLSCR1’s multiple roles as a frontline defense against viral infections.https://www.frontiersin.org/articles/10.3389/fcimb.2025.1573373/fullPLSCR1antiviralSARS-CoV-2influenza A virusHIVEpstein-Barr virus |
| spellingShingle | Alina X. Yang Carmelissa Norbrun Parand Sorkhdini Yang Zhou Phospholipid scramblase 1: a frontline defense against viral infections Frontiers in Cellular and Infection Microbiology PLSCR1 antiviral SARS-CoV-2 influenza A virus HIV Epstein-Barr virus |
| title | Phospholipid scramblase 1: a frontline defense against viral infections |
| title_full | Phospholipid scramblase 1: a frontline defense against viral infections |
| title_fullStr | Phospholipid scramblase 1: a frontline defense against viral infections |
| title_full_unstemmed | Phospholipid scramblase 1: a frontline defense against viral infections |
| title_short | Phospholipid scramblase 1: a frontline defense against viral infections |
| title_sort | phospholipid scramblase 1 a frontline defense against viral infections |
| topic | PLSCR1 antiviral SARS-CoV-2 influenza A virus HIV Epstein-Barr virus |
| url | https://www.frontiersin.org/articles/10.3389/fcimb.2025.1573373/full |
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