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Perveen K, Quach A, Stark MJ, Prescott SL, Barry SC, Hii CS, Ferrante A. Characterization of the Transient Deficiency of PKC Isozyme Levels in Immature Cord Blood T Cells and Its Connection to Anti-Allergic Cytokine Profiles of the Matured Cells. Int J Mol Sci 2021; 22:ijms222312650. [PMID: 34884454 PMCID: PMC8657888 DOI: 10.3390/ijms222312650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 01/05/2023] Open
Abstract
Cord blood T cells (CBTC) from a proportion of newborns express low/deficient levels of some protein kinase C (PKC) isozymes, with low levels of PKCζ correlating with increased risk of developing allergy and associated decrease in interferon-gamma (IFN-γ) producing T cells. Interestingly, these lower levels of PKCζ were increased/normalized by supplementing women during pregnancy with n-3 polyunsaturated fatty acids. However, at present, we have little understanding of the transient nature of the deficiency in the neonate and how PKCζ relates to other PKC isozymes and whether their levels influence maturation into IFN-γ producing T cells. There is also no information on PKCζ isozyme levels in the T cell subpopulations, CD4+ and CD8+ cells. These issues were addressed in the present study using a classical culture model of neonatal T cell maturation, initiated with phytohaemagglutinin (PHA) and recombinant human interleukin-2 (rhIL-2). Of the isozymes evaluated, PKCζ, β2, δ, μ, ε, θ and λ/ι were low in CBTCs. The PKC isozyme deficiencies were also found in the CD4+ and CD8+ T cell subset levels of the PKC isozymes correlated between the two subpopulations. Examination of changes in the PKC isozymes in these deficient cells following addition of maturation signals showed a significant increase in expression within the first few hours for PKCζ, β2 and μ, and 1–2 days for PKCδ, ε, θ and λ/ι. Only CBTC PKCζ isozyme levels correlated with cytokine production, with a positive correlation with IFN-γ, interleukin (IL)-2 and tumour necrosis factor-alpha (TNF), and a negative association with IL-9 and IL-10. The findings reinforce the specificity in using CBTC PKCζ levels as a biomarker for risk of allergy development and identify a period in which this can be potentially ‘corrected’ after birth.
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Affiliation(s)
- Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Alex Quach
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Michael J. Stark
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
- Department of Neonatal Medicine, Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia
| | - Susan L. Prescott
- School of Paediatrics and Child Health, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia;
- The ORIGINS Project, Telethon Kids Institute and Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
| | - Simon C. Barry
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women’s and Children’s Hospital, North Adelaide, SA 5006, Australia; (K.P.); (A.Q.); (C.S.H.)
- Adelaide School of Medicine and the Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; (M.J.S.); (S.C.B.)
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence: ; Tel.: +61-8-81617216
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Ghobadi MZ, Izadi S, Teymoori-Rad M, Farahmand M, Mozhgani SH, Labbaf N, Shokri F, Marashi SM. Potential role of viral infection and B cells as a linker between innate and adaptive immune response in systemic lupus erythematosus. Immunol Res 2021; 69:196-204. [PMID: 33786699 DOI: 10.1007/s12026-021-09186-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 03/22/2021] [Indexed: 11/29/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease that involves several organ systems. Although B cells play a key role in SLE pathogenesis, the mechanisms behind B cell dysregulation in SLE development remained controversial. Finding the modules containing highly co-expressed genes in B cells could explain biological pathways involved in the pathogenesis of SLE, which may further support the reasons for the altered function of B cells in SLE disease. A total of three microarray gene expression datasets were downloaded from Gene Expression Omnibus. SLE samples were prepared from the purified B lymphocyte cells of the patients who have not received immunosuppressive drugs as well as high dose immunocytotoxic therapies or steroids. A weighted gene co-expression network was then constructed to find the relevant modules implicated in the SLE progression. Among 17 identified modules, 3 modules were selected through mapping to STRING and finding the ones that had highly connection at the protein level. These modules clearly indicate the involvement of several pathways in the pathogenesis of SLE including viral infection, adaptive immune response, and innate immune response in B lymphocytes. The WGCN analysis further revealed the co-expressed genes involved in both innate and adaptive immune systems. Mix infections and primary immunodeficiency might also dysregulate B lymphocytes, which may facilitate SLE development. As such, identifying novel biomarkers and pathways in lupus would be of importance.
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Affiliation(s)
- Mohadeseh Zarei Ghobadi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.,Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran
| | - Shima Izadi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran
| | - Majid Teymoori-Rad
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran
| | - Mohammad Farahmand
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran
| | - Sayed-Hamidreza Mozhgani
- Department of Microbiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran.,Non‑Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Negar Labbaf
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran
| | - Fazel Shokri
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Sayed Mahdi Marashi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, 14155-6446, Tehran, Iran.
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3
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Yan XY, Qu XZ, Xu L, Yu SH, Tian R, Zhong XR, Sun LK, Su J. Insight into the role of p62 in the cisplatin resistant mechanisms of ovarian cancer. Cancer Cell Int 2020; 20:128. [PMID: 32322174 PMCID: PMC7164250 DOI: 10.1186/s12935-020-01196-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/28/2020] [Indexed: 02/06/2023] Open
Abstract
Cisplatin is a platinum-based first-line drug for treating ovarian cancer. However, chemotherapy tolerance has limited the efficacy of cisplatin for ovarian cancer patients. Research has demonstrated that cisplatin causes changes in cell survival and death signaling pathways through its interaction with macromolecules and organelles, which indicates that investigation into the DNA off-target effects of cisplatin may provide critical insights into the mechanisms underlying drug resistance. The multifunctional protein p62 works as a signaling hub in the regulation of pro-survival transcriptional factors NF-κB and Nrf2 and connects autophagy and apoptotic signals, which play important roles in maintaining cell homeostasis. In this review, we discuss the role of p62 in cisplatin resistance by exploring p62-associated signaling pathways based on current studies and our work. Insights into these resistance mechanisms may lead to more effective therapeutic strategies for ovarian cancer by targeting p62.
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Affiliation(s)
- Xiao-Yu Yan
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Xian-Zhi Qu
- 2Department of Hepatobiliary & Pancreatic Surgery, The Second Hospital of Jilin University, Jilin University, Changchun, 130021 Jilin China
| | - Long Xu
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Si-Hang Yu
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Rui Tian
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Xin-Ru Zhong
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Lian-Kun Sun
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
| | - Jing Su
- 1Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021 China
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4
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Nayak RC, Hegde S, Althoff MJ, Wellendorf AM, Mohmoud F, Perentesis J, Reina-Campos M, Reynaud D, Zheng Y, Diaz-Meco MT, Moscat J, Cancelas JA. The signaling axis atypical protein kinase C λ/ι-Satb2 mediates leukemic transformation of B-cell progenitors. Nat Commun 2019; 10:46. [PMID: 30610188 PMCID: PMC6320370 DOI: 10.1038/s41467-018-07846-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 11/21/2018] [Indexed: 01/01/2023] Open
Abstract
Epigenetically regulated transcriptional plasticity has been proposed as a mechanism of differentiation arrest and resistance to therapy. BCR-ABL leukemias result from leukemic stem cell/progenitor transformation and represent an opportunity to identify epigenetic progress contributing to lineage leukemogenesis. Primary human and murine BCR-ABL+ leukemic progenitors have increased activation of Cdc42 and the downstream atypical protein kinase C (aPKC). While the isoform aPKCζ behaves as a leukemic suppressor, aPKCλ/ι is critically required for oncogenic progenitor proliferation, survival, and B-cell differentiation arrest, but not for normal B-cell lineage differentiation. In vitro and in vivo B-cell transformation by BCR-ABL requires the downregulation of key genes in the B-cell differentiation program through an aPKC λ/ι-Erk dependent Etv5/Satb2 chromatin repressive signaling complex. Genetic or pharmacological targeting of aPKC impairs human oncogenic addicted leukemias. Therefore, the aPKCλ/ι-SATB2 signaling cascade is required for leukemic BCR-ABL+ B-cell progenitor transformation and is amenable to non-tyrosine kinase inhibition. The upstream pathways regulating leukemic transcriptional plasticity for differentiation arrest and resistance to therapy are unclear. Here the authors show that aPKC λ/ι-controls leukemic B-cell precursor differentiation arrest trough RAC/MEK/ERK/SATB2 epigenetic repression
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Affiliation(s)
- R C Nayak
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - S Hegde
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA.,Hoxworth Blood Center, University of Cincinnati, 3130 Highland Ave., Cincinnati, OH, 45267, USA
| | - M J Althoff
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA.,Hoxworth Blood Center, University of Cincinnati, 3130 Highland Ave., Cincinnati, OH, 45267, USA.,Graduate Program of Cancer & Cell Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - A M Wellendorf
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - F Mohmoud
- Graduate Program of Cancer & Cell Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - J Perentesis
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - M Reina-Campos
- Cancer Metabolism and Signaling Networks Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - D Reynaud
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - Y Zheng
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - M T Diaz-Meco
- Cancer Metabolism and Signaling Networks Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - J Moscat
- Cancer Metabolism and Signaling Networks Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - J A Cancelas
- Division of Experimental Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA. .,Hoxworth Blood Center, University of Cincinnati, 3130 Highland Ave., Cincinnati, OH, 45267, USA. .,Graduate Program of Cancer & Cell Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
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5
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Ramsbottom KM, Sacirbegovic F, Hawkins ED, Kallies A, Belz GT, Van Ham V, Haynes NM, Durrant MJ, Humbert PO, Russell SM, Oliaro J. Lethal giant larvae-1 deficiency enhances the CD8(+) effector T-cell response to antigen challenge in vivo. Immunol Cell Biol 2015; 94:306-11. [PMID: 26391810 DOI: 10.1038/icb.2015.82] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 07/20/2015] [Accepted: 08/18/2015] [Indexed: 01/31/2023]
Abstract
Lethal giant larvae-1 (Lgl-1) is an evolutionary conserved protein that regulates cell polarity in diverse lineages; however, the role of Lgl-1 in the polarity and function of immune cells remains to be elucidated. To assess the role of Lgl-1 in T cells, we generated chimeric mice with a hematopoietic system deficient for Lgl-1. Lgl-1 deficiency did not impair the activation or function of peripheral CD8(+) T cells in response to antigen presentation in vitro, but did skew effector and memory T-cell differentiation. When challenged with antigen-expressing virus or tumor, Lgl-1-deficient mice displayed altered T-cell responses. This manifested in a stronger antiviral and antitumor effector CD8(+) T-cell response, the latter resulting in enhanced control of MC38-OVA tumors. These results reveal a novel role for Lgl-1 in the regulation of virus-specific T-cell responses and antitumor immunity.
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Affiliation(s)
- Kelly M Ramsbottom
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Faruk Sacirbegovic
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Edwin D Hawkins
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia.,Lo Celso Laboratory, Imperial College London, Sir Alexander Fleming Building, London, UK
| | - Axel Kallies
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Gabrielle T Belz
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Vanessa Van Ham
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Nicole M Haynes
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Michael J Durrant
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Patrick O Humbert
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia.,Department of Biochemistry and Molecular Biology, The University of Melbourne, Parkville, Victoria, Australia.,Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
| | - Sarah M Russell
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia.,Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia.,Centre for Micro-photonics, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Jane Oliaro
- Cancer Immunology Laboratory, The Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia.,Department of Pathology, The University of Melbourne, Parkville, Victoria, Australia
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6
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Pham K, Sacirbegovic F, Russell SM. Polarized cells, polarized views: asymmetric cell division in hematopoietic cells. Front Immunol 2014; 5:26. [PMID: 24550912 PMCID: PMC3909886 DOI: 10.3389/fimmu.2014.00026] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 01/16/2014] [Indexed: 11/17/2022] Open
Abstract
It has long been recognized that alterations in cell shape and polarity play important roles in coordinating lymphocyte functions. In the last decade, a new aspect of lymphocyte polarity has attracted much attention, termed asymmetric cell division (ACD). ACD has previously been shown to dictate or influence many aspects of development in model organisms such as the worm and the fly, and to be disrupted in disease. Recent observations that ACD also occurs in lymphocytes led to exciting speculations that ACD might influence lymphocyte differentiation and function, and leukemia. Dissecting the role that ACD might play in these activities has not been straightforward, and the evidence to date for a functional role in lymphocyte fate determination has been controversial. In this review, we discuss the evidence to date for ACD in lymphocytes, and how it might influence lymphocyte fate. We also discuss current gaps in our knowledge, and suggest approaches to definitively test the physiological role of ACD in lymphocytes.
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Affiliation(s)
- Kim Pham
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre , East Melbourne, VIC , Australia ; Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology , Hawthorn, VIC , Australia
| | - Faruk Sacirbegovic
- Department of Pathology, University of Melbourne , Melbourne, VIC , Australia
| | - Sarah M Russell
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre , East Melbourne, VIC , Australia ; Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology , Hawthorn, VIC , Australia ; Department of Pathology, University of Melbourne , Melbourne, VIC , Australia ; Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne, VIC , Australia
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7
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Ishii T, Warabi E, Siow RCM, Mann GE. Sequestosome1/p62: a regulator of redox-sensitive voltage-activated potassium channels, arterial remodeling, inflammation, and neurite outgrowth. Free Radic Biol Med 2013; 65:102-116. [PMID: 23792273 DOI: 10.1016/j.freeradbiomed.2013.06.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/06/2013] [Accepted: 06/07/2013] [Indexed: 12/14/2022]
Abstract
Sequestosome1/p62 (SQSTM1) is an oxidative stress-inducible protein regulated by the redox-sensitive transcription factor Nrf2. It is not an antioxidant but known as a multifunctional regulator of cell signaling with an ability to modulate targeted or selective degradation of proteins through autophagy. SQSTM1 implements these functions through physical interactions with different types of proteins including atypical PKCs, nonreceptor-type tyrosine kinase p56(Lck) (Lck), polyubiquitin, and autophagosomal factor LC3. One of the notable physiological functions of SQSTM1 is the regulation of redox-sensitive voltage-gated potassium (Kv) channels which are composed of α and β subunits: (Kvα)4 (Kvβ)4. Previous studies have established that SQSTM1 scaffolds PKCζ, enhancing phosphorylation of Kvβ which induces inhibition of pulmonary arterial Kv1.5 channels under acute hypoxia. Recent studies reveal that Lck indirectly interacts with Kv1.3 α subunits and plays a key role in acute hypoxia-induced Kv1.3 channel inhibition in T lymphocytes. Kv1.3 channels provide a signaling platform to modulate the migration and proliferation of arterial smooth muscle cells and activation of T lymphocytes, and hence have been recognized as a therapeutic target for treatment of restenosis and autoimmune diseases. In this review, we focus on the functional interactions of SQSTM1 with Kv channels through two key partners aPKCs and Lck. Furthermore, we provide molecular insights into the functions of SQSTM1 in suppression of proliferation of arterial smooth muscle cells and neointimal hyperplasia following carotid artery ligation, in T lymphocyte differentiation and activation, and in NGF-induced neurite outgrowth in PC12 cells.
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Affiliation(s)
- Tetsuro Ishii
- School of Medicine, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Eiji Warabi
- School of Medicine, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8575, Japan
| | - Richard C M Siow
- Cardiovascular Division, British Heart Foundation Centre of Research Excellence, School of Medicine, King's College London, London SE1 9NH, UK
| | - Giovanni E Mann
- Cardiovascular Division, British Heart Foundation Centre of Research Excellence, School of Medicine, King's College London, London SE1 9NH, UK
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8
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Isakov N, Altman A. Regulation of immune system cell functions by protein kinase C. Front Immunol 2013; 4:384. [PMID: 24302926 PMCID: PMC3831523 DOI: 10.3389/fimmu.2013.00384] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 11/04/2013] [Indexed: 11/22/2022] Open
Affiliation(s)
- Noah Isakov
- Faculty of Health Sciences, The Shraga Segal Department of Microbiology, Immunology and Genetics, Cancer Research Center, Ben Gurion University of the Negev , Beer Sheva , Israel
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