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Lara-Aguilar V, Crespo-Bermejo C, Llamas-Adán M, Grande-García S, Cortijo-Alfonso ME, Martín-Carbonero L, Domínguez L, Ryan P, de Los Santos I, Bartolomé-Sanchez S, Valle-Millares D, Jiménez-Sousa MÁ, Briz V, Fernández-Rodríguez A. HCV spontaneous clearers showed low senescence profile in people living with HIV under long ART. J Med Virol 2023; 95:e28955. [PMID: 37465865 DOI: 10.1002/jmv.28955] [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: 02/23/2023] [Revised: 05/30/2023] [Accepted: 06/29/2023] [Indexed: 07/20/2023]
Abstract
Coinfection with hepatitis C virus (HCV) and human immunodeficiency virus (HIV) increases immune activation, inflammation, and oxidative stress that could lead to premature senescence. Different HCV infections, either acute or chronic infection, could lead to distinct premature cellular senescence in people living with HIV (PLWHIV). Observational study in 116 PLWHIV under antiretroviral treatment with different HCV status: (i) n = 45 chronically infected with HCV (CHC); (ii) n = 36 individuals who spontaneously clarify HCV (SC); (iii) n = 35 HIV controls. Oxidative stress biomarkers were analyzed at lipid, DNA, protein, and nitrates levels, as well as antioxidant capacity and glutathione reductase enzyme. Replicative senescence was evaluated by relative telomere length (RTL) measurement. Additionally, 26 markers of Senescence-Associated Secretory Phenotype (SASP) were analyzed by multiplex immunoassays (Luminex xMAP technology). Differences were evaluated by generalized linear model (GLMs) adjusted by most significant covariates. The SC group had a senescence signature similar to the HIV control group and slightly lower SASP levels. However, significant differences were observed with respect to the CHC group, where an increase in the nitrate concentration [adjusted arithmetic mean ratio, aAMR = 1.73 (1.27-2.35), p < 0.001, q = 0.009] and the secretion of 13 SASP-associated factors [granulocyte macrophage colony-stimulating factor (GM-CSF), interferon-β, interleukin (IL)-1β, IL-2, IL-8, IL-13, tumor necrosis factor (TNF)-α, IL-1α, IL-1RA, IL-7, IL-15, C-X-C motif chemokine ligand 10 (IP-10), stem cell factor (SCF); q < 0.1)] was detected. The CHC group also showed higher values of IL-1α, IP-10, and placental growth factor 1 (PIGF-1) than HIV controls. The SC group showed a slightly lower senescence profile than the HIV group, which could indicate a more efficient control of viral-induced senescence due to their immune strengths. Chronic HCV infection in PLWHIV led to an increase in nitrate and elevated SASP biomarkers favoring the establishment of viral persistence.
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Affiliation(s)
- Violeta Lara-Aguilar
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - Celia Crespo-Bermejo
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - Manuel Llamas-Adán
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - Sergio Grande-García
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - María Engracia Cortijo-Alfonso
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | | | - Lourdes Domínguez
- VIH Unit, Internal Medicine Service, Doce de Octubre Hospital Biomedical Research Institute (imas12), Madrid, Spain
- King's College London University, London, UK
| | - Pablo Ryan
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Department of Infectious Diseases, HIV/Hepatitis Internal Medicine Service, Infanta Leonor University Hospital, Madrid, España
| | - Ignacio de Los Santos
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
- Internal Medicine-Infectious Diseases Service, La Princesa University Hospital, Madrid, España
| | - Sofía Bartolomé-Sanchez
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - Daniel Valle-Millares
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - María Ángeles Jiménez-Sousa
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
| | - Verónica Briz
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
| | - Amanda Fernández-Rodríguez
- Viral Hepatitis Reference and Research Laboratory, National Center of Microbiology, Institute of Health Carlos III, Madrid, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Institute of Health Carlos III, Madrid, Spain
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Applications and mechanisms of the cyclin-dependent kinase 4/6 inhibitor, PD-0332991, in solid tumors. Cell Oncol (Dordr) 2022; 45:1053-1071. [PMID: 36087253 DOI: 10.1007/s13402-022-00714-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2022] [Indexed: 01/10/2023] Open
Abstract
Abnormal CDK4/6-Rb-E2F signal transduction is a common finding in tumors and is a driving factor for the excessive proliferation of various tumor cells. PD-0332991, a highly specific, small molecule inhibitor for CDK4 and 6, has been shown to inhibit tumor growth by abrogating the phosphorylating capacity of CDK4/6 and suppressing Rb phosphorylation. It has been promoted for the treatment of breast cancer and potentially for other tumor types such as liver cancers, lung cancers and sarcomas. Due to the risk of monotherapy resistance, PD-0332991 is commonly used in combination with other drugs. Such combination treatments have proved able to inhibit tumor proliferation more effectively, induce stronger senescence and apoptosis, and enhance the efficiency of immunotherapy. Therefore, tumor cells with senescence induced by PD-0332991 are now used as ideal screening tools of cytolytic drugs with more efficient and thorough anti-tumor properties. With more extensive understandings about the branching points between senescence and apoptosis, it is possible to refine the dosage of PD-0332991. Better characterization of resistant cells, of inhibitors and of adverse effects such as leukopenia are needed to overcome obstacles in the use of PD-0332991. In this review of PD-0332991 research, we hope to provide guidance of transitions from laboratory findings to clinical applications of PD-0332991 and to facilitate PD-0332991-based multi-inhibitor combination therapies for various tumors.
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Ghamar Talepoor A, Doroudchi M. Immunosenescence in atherosclerosis: A role for chronic viral infections. Front Immunol 2022; 13:945016. [PMID: 36059478 PMCID: PMC9428721 DOI: 10.3389/fimmu.2022.945016] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/26/2022] [Indexed: 01/10/2023] Open
Abstract
Immune system is a versatile and dynamic body organ which offers survival and endurance of human beings in their hostile living environment. However, similar to other cells, immune cells are hijacked by senescence. The ageing immune cells lose their beneficial functions but continue to produce inflammatory mediators which draw other immune and non-immune cells to the senescence loop. Immunosenescence has been shown to be associated with different pathological conditions and diseases, among which atherosclerosis has recently come to light. There are common drivers of both immunosenescence and atherosclerosis; e.g. inflammation, reactive oxygen species (ROS), chronic viral infections, genomic damage, oxidized-LDL, hypertension, cigarette smoke, hyperglycaemia, and mitochondrial failure. Chronic viral infections induce inflammaging, sustained cytokine signaling, ROS generation and DNA damage which are associated with atherogenesis. Accumulating evidence shows that several DNA and RNA viruses are stimulators of immunosenescence and atherosclerosis in an interrelated network. DNA viruses such as CMV, EBV and HBV upregulate p16, p21 and p53 senescence-associated molecules; induce inflammaging, metabolic reprogramming of infected cells, replicative senescence and telomere shortening. RNA viruses such as HCV and HIV induce ROS generation, DNA damage, induction of senescence-associated secretory phenotype (SASP), metabolic reprogramming of infected cells, G1 cell cycle arrest, telomere shortening, as well as epigenetic modifications of DNA and histones. The newly emerged SARS-CoV-2 virus is also a potent inducer of cytokine storm and SASP. The spike protein of SARS-CoV-2 promotes senescence phenotype in endothelial cells by augmenting p16, p21, senescence-associated β-galactosidase (SA-β-Gal) and adhesion molecules expression. The impact of SARS-CoV-2 mega-inflammation on atherogenesis, however, remains to be investigated. In this review we focus on the common processes in immunosenescence and atherogenesis caused by chronic viral infections and discuss the current knowledge on this topic.
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