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Szántó M, Yélamos J, Bai P. Specific and shared biological functions of PARP2 - is PARP2 really a lil' brother of PARP1? Expert Rev Mol Med 2024; 26:e13. [PMID: 38698556 PMCID: PMC11140550 DOI: 10.1017/erm.2024.14] [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: 11/28/2023] [Revised: 03/07/2024] [Accepted: 03/20/2024] [Indexed: 05/05/2024]
Abstract
PARP2, that belongs to the family of ADP-ribosyl transferase enzymes (ART), is a discovery of the millennium, as it was identified in 1999. Although PARP2 was described initially as a DNA repair factor, it is now evident that PARP2 partakes in the regulation or execution of multiple biological processes as inflammation, carcinogenesis and cancer progression, metabolism or oxidative stress-related diseases. Hereby, we review the involvement of PARP2 in these processes with the aim of understanding which processes are specific for PARP2, but not for other members of the ART family. A better understanding of the specific functions of PARP2 in all of these biological processes is crucial for the development of new PARP-centred selective therapies.
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Affiliation(s)
- Magdolna Szántó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - José Yélamos
- Hospital del Mar Research Institute, Barcelona, Spain
| | - Péter Bai
- HUN-REN-UD Cell Biology and Signaling Research Group, Debrecen, 4032, Hungary
- MTA-DE Lendület Laboratory of Cellular Metabolism, Debrecen, 4032, Hungary
- Research Center for Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen 4032, Hungary
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2
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Luckner B, Essfeld F, Ayobahan SU, Richling E, Eilebrecht E, Eilebrecht S. Transcriptomic profiling of TLR-7-mediated immune-challenge in zebrafish embryos in the presence and absence of glucocorticoid-induced immunosuppression. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115570. [PMID: 37844410 DOI: 10.1016/j.ecoenv.2023.115570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/28/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023]
Abstract
Although numerous studies imply a correlation between chemical contamination and an impaired immunocompetence of wildlife populations, the assessment of immunomodulatory modes of action is currently not covered in the regulatory requirements for the approval of new substances. This is not least due to the complexity of the immune system and a lack of standardised methods and validated biomarkers. To tackle this issue, in this study, the transcriptomic profiles of zebrafish embryos were analysed in response to the immunosuppressive compound clobetasol propionate, a synthetic glucocorticoid, and/or the immunostimulatory compound imiquimod (IMQ), a TLR-7 agonist. Using IMQ, known for its potential to induce psoriasis-like effects in mice and human, this study additionally aimed at evaluating the usability of the zebrafish embryo model as an alternative and 3R conform system for the IMQ-induced psoriasis mouse model. Our study substantiates the suitability of previously proposed genes as possible biomarkers for immunotoxicity, such as socs3, nfkbia, anxa1c, fkbp5 and irg1l. Likewise, however, our findings indicate that these genes may be less suitable to distinguish a suppressive from stimulating fashion of action. In contrast, based on a differential regulation in opposite direction in response to both compounds, krt17, rtn4a, and1, smhyc1 and gmpr were identified as potential novel biomarkers with said power to differentiate. Observed IMQ-induced alterations in the expression of genes previously associated with the pathogenesis of psoriasis such as krt17, nfkbia, parp1, pparg, nfil3-6, per2, stat4, klf2, rtn4a, anxa1c and nr1d2 indicate the inducibility of psoriatic effects in the zebrafish embryo. Our work contributes to the establishment of an approach for a 3R-compliant investigation of immunotoxic mechanisms of action in aquatic vertebrates. The validated and newly identified biomarker candidates of specific immunotoxic effects can be used in future studies in the context of environmental hazard assessment of substances or also for human-relevant immunotoxicological questions.
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Affiliation(s)
- Benedikt Luckner
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Fabian Essfeld
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany; Computational Biology, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Steve U Ayobahan
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Elke Richling
- Food Chemistry and Toxicology, Department of Chemistry, RPTU Kaiserslautern-Landau, Germany
| | - Elke Eilebrecht
- Department Ecotoxicology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Sebastian Eilebrecht
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany.
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Constantin C, Surcel M, Munteanu A, Neagu M. Insights into Nutritional Strategies in Psoriasis. Nutrients 2023; 15:3528. [PMID: 37630719 PMCID: PMC10458768 DOI: 10.3390/nu15163528] [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: 06/30/2023] [Revised: 07/18/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Psoriasis, an autoimmune chronic inflammatory skin condition, has a high incidence in the general population, reaching 2-4%. Its pathogenesis involves an interplay of genetic factors, immune disturbances, and environmental factors. Within the environmental factors that aid the appearance of this autoimmune skin disease, the Western lifestyle and overall diet play important roles in the steady growth in psoriasis prevalence. Furthermore, psoriasis is associated with comorbidities such as psoriatic arthritis, cardiovascular disease, metabolic syndrome, and obesity. Accumulating evidence suggests that obesity is an important risk factor for psoriasis. Moreover, obesity aggravates established psoriasis, and a reduction in the body mass index can improve the clinical outcomes of psoriasis and increase the efficacy of standard psoriasis therapies. The possible connection between this autoimmune disease and obesity relies on the fact that white adipose tissue is an essential endocrine organ that secretes an array of immune mediators and inflammatory and metabolic factors with pro-inflammatory action. Thus, immune-mediated mechanisms in both psoriasis and obesity conditions are common factors. This paper describes the factors that link obesity with skin autoimmune disease and highlights the importance of the stimulatory or regulatory effects of nutrients and food in psoriasis and the possible improvement of psoriasis through nutritional strategies.
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Affiliation(s)
- Carolina Constantin
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.S.); (A.M.)
- Pathology Department, Colentina Clinical Hospital, 020125 Bucharest, Romania
| | - Mihaela Surcel
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.S.); (A.M.)
| | - Adriana Munteanu
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.S.); (A.M.)
| | - Monica Neagu
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.S.); (A.M.)
- Pathology Department, Colentina Clinical Hospital, 020125 Bucharest, Romania
- Doctoral School, Faculty of Biology, University of Bucharest, 050107 Bucharest, Romania
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4
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Antal D, Pór Á, Kovács I, Dull K, Póliska S, Ujlaki G, Demény MÁ, Szöllősi AG, Kiss B, Szegedi A, Bai P, Szántó M. PARP2 promotes inflammation in psoriasis by modulating estradiol biosynthesis in keratinocytes. J Mol Med (Berl) 2023; 101:987-999. [PMID: 37351597 PMCID: PMC10400701 DOI: 10.1007/s00109-023-02338-z] [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: 01/05/2023] [Revised: 05/09/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023]
Abstract
Poly(ADP-ribose) polymerase 2 (PARP2) alongside PARP1 are responsible for the bulk of cellular PARP activity, and they were first described as DNA repair factors. However, research in past decades implicated PARPs in biological functions as diverse as the regulation of cellular energetics, lipid homeostasis, cell death, and inflammation. PARP activation was described in Th2-mediated inflammatory processes, but studies focused on the role of PARP1, while we have little information on PARP2 in inflammatory regulation. In this study, we assessed the role of PARP2 in a Th17-mediated inflammatory skin condition, psoriasis. We found that PARP2 mRNA expression is increased in human psoriatic lesions. Therefore, we studied the functional consequence of decreased PARP2 expression in murine and cellular human models of psoriasis. We observed that the deletion of PARP2 attenuated the imiquimod-induced psoriasis-like dermatitis in mice. Silencing of PARP2 in human keratinocytes prevented their hyperproliferation, maintained their terminal differentiation, and reduced their production of inflammatory mediators after treatment with psoriasis-mimicking cytokines IL17A and TNFα. Underlying these observations, we found that aromatase was induced in the epidermis of PARP2 knock-out mice and in PARP2-deficient human keratinocytes, and the resulting higher estradiol production suppressed NF-κB activation, and hence, inflammation in keratinocytes. Steroidogenic alterations have previously been described in psoriasis, and we extend these observations by showing that aromatase expression is reduced in psoriatic lesions. Collectively, our data identify PARP2 as a modulator of estrogen biosynthesis by epidermal keratinocytes that may be relevant in Th17 type inflammation. KEY MESSAGES : PARP2 mRNA expression is increased in lesional skin of psoriasis patients. PARP2 deletion in mice attenuated IMQ-induced psoriasis-like dermatitis. NF-κB activation is suppressed in PARP2-deficient human keratinocytes. Higher estradiol in PARP2-deficient keratinocytes conveys anti-inflammatory effect.
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Affiliation(s)
- Dóra Antal
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., Elettudomanyi Epulet, H-4032, Debrecen, Hungary
- The Hungarian Academy of Sciences, Center of Excellence, Budapest, Hungary
| | - Ágnes Pór
- Department of Pathology, Gyula Kenézy Campus, Clinical Centre, University of Debrecen, Debrecen, Hungary
| | - Ilona Kovács
- Department of Pathology, Gyula Kenézy Campus, Clinical Centre, University of Debrecen, Debrecen, Hungary
| | - Katalin Dull
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Szilárd Póliska
- Genomic Medicine and Bioinformatics Core Facility, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gyula Ujlaki
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., Elettudomanyi Epulet, H-4032, Debrecen, Hungary
- The Hungarian Academy of Sciences, Center of Excellence, Budapest, Hungary
| | - Máté Ágoston Demény
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., Elettudomanyi Epulet, H-4032, Debrecen, Hungary
- The Hungarian Academy of Sciences, Center of Excellence, Budapest, Hungary
| | - Attila Gábor Szöllősi
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Borbála Kiss
- Department of Oncology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Andrea Szegedi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Allergology Research Group, University of Debrecen, Debrecen, Hungary
| | - Péter Bai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., Elettudomanyi Epulet, H-4032, Debrecen, Hungary
- The Hungarian Academy of Sciences, Center of Excellence, Budapest, Hungary
- NKFIH-DE Lendület Laboratory of Cellular Metabolism, Debrecen, Hungary
- Research Center for Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- MTA-DE Cell Biology and Signaling Research Group ELKH, Debrecen, Hungary
| | - Magdolna Szántó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., Elettudomanyi Epulet, H-4032, Debrecen, Hungary.
- The Hungarian Academy of Sciences, Center of Excellence, Budapest, Hungary.
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5
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Krishnan A, Spegg V, Dettwiler S, Schraml P, Moch H, Dedes K, Varga Z, Altmeyer M. Analysis of the PARP1, ADP-Ribosylation, and TRIP12 Triad With Markers of Patient Outcome in Human Breast Cancer. Mod Pathol 2023; 36:100167. [PMID: 36990278 DOI: 10.1016/j.modpat.2023.100167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 03/15/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023]
Abstract
PARP inhibitors (PARPi) are increasingly used in breast cancer therapy, including high-grade triple-negative breast cancer (TNBC) treatment. Varying treatment responses and PARPi resistance with relapse currently pose limitations to the efficacy of PARPi therapy. The pathobiological reasons why individual patients respond differently to PARPi are poorly understood. In this study, we analyzed expression of PARP1, the main target of PARPi, in normal breast tissue, breast cancer, and its precursor lesions using human breast cancer tissue microarrays covering a total of 824 patients, including more than 100 TNBC cases. In parallel, we analyzed nuclear adenosine diphosphate (ADP)-ribosylation as a marker of PARP1 activity and TRIP12, an antagonist of PARPi-induced PARP1 trapping. Although we found PARP1 expression to be generally increased in invasive breast cancer, PARP1 protein levels and nuclear ADP-ribosylation were lower in higher tumor grade and TNBC samples than non-TNBCs. Cancers with low levels of PARP1 and low levels of nuclear ADP-ribosylation were associated with significantly reduced overall survival. This effect was even more pronounced in cases with high levels of TRIP12. These results indicate that PARP1-dependent DNA repair capacity may be compromised in aggressive breast cancers, potentially fueling enhanced accumulation of mutations. Moreover, the results revealed a subset of breast cancers with low PARP1, low nuclear ADP-ribosylation, and high TRIP12 levels, which may compromise their response to PARPi, suggesting a combination of markers for PARP1 abundance, enzymatic activity, and trapping capabilities might aid patient stratification for PARPi therapy.
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Affiliation(s)
- Aswini Krishnan
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | - Vincent Spegg
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | - Susanne Dettwiler
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Peter Schraml
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Holger Moch
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Konstantin Dedes
- Department of Gynecology, University Hospital of Zurich, Zurich, Switzerland
| | - Zsuzsanna Varga
- Department of Pathology and Molecular Pathology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Matthias Altmeyer
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland.
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Radulska A, Pelikant-Małecka I, Jendernalik K, Dobrucki IT, Kalinowski L. Proteomic and Metabolomic Changes in Psoriasis Preclinical and Clinical Aspects. Int J Mol Sci 2023; 24:ijms24119507. [PMID: 37298466 DOI: 10.3390/ijms24119507] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/12/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Skin diseases such as psoriasis (Ps) and psoriatic arthritis (PsA) are immune-mediated inflammatory diseases. Overlap of autoinflammatory and autoimmune conditions hinders diagnoses and identifying personalized patient treatments due to different psoriasis subtypes and the lack of verified biomarkers. Recently, proteomics and metabolomics have been intensively investigated in a broad range of skin diseases with the main purpose of identifying proteins and small molecules involved in the pathogenesis and development of the disease. This review discusses proteomics and metabolomics strategies and their utility in research and clinical practice in psoriasis and psoriasis arthritis. We summarize the studies, from in vivo models conducted on animals through academic research to clinical trials, and highlight their contribution to the discovery of biomarkers and targets for biological drugs.
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Affiliation(s)
- Adrianna Radulska
- Department of Medical Laboratory Diagnostics-Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
| | - Iwona Pelikant-Małecka
- Department of Medical Laboratory Diagnostics-Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
| | - Kamila Jendernalik
- Department of Medical Laboratory Diagnostics-Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
| | - Iwona T Dobrucki
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405N Mathews Ave., MC-251, Urbana, IL 61801, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carle-Illinois College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Leszek Kalinowski
- Department of Medical Laboratory Diagnostics-Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
- BioTechMed Centre/Department of Mechanics of Materials and Structures, Gdansk University of Technology, 11/12 Narutowicza Street, 80-233 Gdansk, Poland
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7
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Lee SH, Kim HJ, Oh GS, Lee SB, Khadka D, Cao W, Choe SK, Shim H, Kim CD, Kwak TH, So HS. Augmentation of NAD + by Dunnione Ameliorates Imiquimod-Induced Psoriasis-Like Dermatitis in Mice. J Inflamm Res 2022; 15:4623-4636. [PMID: 35991005 PMCID: PMC9386739 DOI: 10.2147/jir.s372543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/07/2022] [Indexed: 11/23/2022] Open
Abstract
Background Dunnione has anti-inflammatory properties arising from its ability to alter the ratio of NAD+/NADH through NAD(P)H quinone oxidoreductase 1 (NQO1) enzymatic action, followed by subsequent inhibition of NF-κB and inflammatory cytokines. Psoriasis is a chronic, inflammatory skin disorder in which the IL-23/Th17 axis plays an important role in inflammation. However, it is unclear whether modulation of NAD+ levels affects psoriasis, such as skin inflammation. Therefore, in this study, we investigated the effect of NAD+/NADH ratio modulation on imiquimod (IMQ)-induced, psoriasis-like skin inflammation in mice. Methods Psoriasis-like skin inflammation was generated by daily topical application of IMQ cream. The severity of dermatitis was assessed using the Psoriasis Area Severity Index (PASI) and histochemistry. Expression of inflammatory cytokines was detected by enzyme-linked immunosorbent assay and quantitative PCR. Acetylation of NF-κB p65 and STAT3 was determined by Western blotting. Results Dunnione improved IMQ-induced epidermal hyperplasia and inflammation, consistent with decreased levels of inflammatory cytokines (IL-17, IL-22, and IL-23) in skin lesions. Moreover, we found that an increase in the NAD+/NADH ratio by dunnione restored SIRT1 activity, thereby reduced imiquimod-induced STAT3 acetylation, which modulates the expression of psoriasis-promoting inflammatory cytokines, such as IL-17, IL-22, and IL-23. Conclusion Pharmacological modulation of cellular NAD+ levels could be a promising therapeutic approach for psoriasis-like skin disease.
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Affiliation(s)
- Seung Hoon Lee
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Hyung-Jin Kim
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Gi-Su Oh
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Su-Bin Lee
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Dipendra Khadka
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Wal Cao
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Seong-Kyu Choe
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Hyeok Shim
- Department of Hemato-Oncology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Chang-Deok Kim
- Department of Dermatology, College of Medicine, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Tae Hwan Kwak
- R&D Center, NADIANBIO Ltd, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Hong-Seob So
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Jeonbuk, 54538, Republic of Korea.,R&D Center, NADIANBIO Ltd, Iksan, Jeonbuk, 54538, Republic of Korea
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Wong W, Crane ED, Zhang H, Li J, Day TA, Green AE, Menzies KJ, Crane JD. Pgc-1α controls epidermal stem cell fate and skin repair by sustaining NAD + homeostasis during aging. Mol Metab 2022; 65:101575. [PMID: 35987498 PMCID: PMC9463389 DOI: 10.1016/j.molmet.2022.101575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/30/2022] [Accepted: 08/11/2022] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE The epidermal barrier is renewed by the activation, proliferation, and differentiation of keratinocyte stem cells after injury and aging impedes this repair process through undefined mechanisms. We previously identified a gene signature of metabolic dysfunction in aged murine epidermis, but the precise regulators of epidermal repair and age-related growth defects are not well established. Aged mouse models as well as mice with conditional epidermal loss of the metabolic regulator, peroxisome proliferator-activated receptor gamma coactivator-1 alpha (Pgc-1α) were used to explore the cellular pathways which control skin repair after injury and stress. METHODS Aged mice or those with epidermal Pgc-1α deletion (epiPgc-1α KO) and young or Pgc1afl/fl controls were subjected to wound injury, UVB exposure or the inflammatory agent TPA. In vivo and ex vivo analyses of wound closure, skin structure, cell growth and stem cell differentiation were used to understand changes in epidermal re-growth and repair resulting from aging or Pgc-1α loss. RESULTS Aging impairs epidermal re-growth during wound healing and results in lower expression of Pgc-1α. Mice with conditional deletion of epidermal Pgc-1α exhibit greater inflammation- and UVB-induced cell differentiation, reduced proliferation, and slower wound healing. epiPgc-1α KO mice also displayed reduced keratinocyte NAD+ levels, shorter telomeres, and greater poly ADP-ribosylation, resulting in enhanced stress-stimulated p53 and p21 signaling. When NAD+ was reduced by Pgc-1α loss or pharmacologic inhibition of NAD+ synthesis, there was reduced stress-induced proliferation, increased differentiation, and protection against DNA damage via enhanced epidermal shedding. Similarly, aged mice exhibit disrupted epidermal NAD+ homeostasis and enhanced p53 activation, resulting in p21 growth arrest after wounding. NAD+ precursor treatment restores epidermal growth from old skin to that of young. CONCLUSIONS Our studies identify a novel role for epidermal Pgc-1α in controlling epidermal repair via its regulation of cellular NAD+ and downstream effects on p53-driven growth arrest. We also establish that parallel mechanisms are evident in aged epidermis, showing that NAD+ signaling is an important controller of physiologic skin repair and that dysfunction of this pathway contributes to age-related wound repair defects.
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Affiliation(s)
- Wesley Wong
- Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Elizabeth D Crane
- Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Hui Zhang
- Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Jiahe Li
- Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Tovah A Day
- Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Alex E Green
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Canada
| | - Keir J Menzies
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Canada
| | - Justin D Crane
- Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA.
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9
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Man MQ, Wakefield JS, Mauro TM, Elias PM. Role of nitric oxide in regulating epidermal permeability barrier function. Exp Dermatol 2022; 31:290-298. [PMID: 34665906 PMCID: PMC8897205 DOI: 10.1111/exd.14470] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/25/2021] [Accepted: 10/17/2021] [Indexed: 12/12/2022]
Abstract
Nitric oxide (NO), a free radical molecule synthesized by nitric oxide synthases (NOS), regulates multiple cellular functions in a variety of cell types. These NOS, including endothelial NOS (eNOS), inducible NOS (iNOS) and neural NOS (nNOS), are expressed in keratinocytes. Expression levels of both iNOS and nNOS decrease with ageing, and insufficient NO has been linked to the development of a number of disorders such as diabetes and hypertension, and to the severity of atherosclerosis. Conversely, excessive NO levels can induce cellular oxidative stress, but physiological levels of NO are required to maintain the normal functioning of cells, including keratinocytes. NO also regulates cutaneous functions, including epidermal permeability barrier homeostasis and wound healing, through its stimulation of keratinocyte proliferation, differentiation and lipid metabolism. Topical applications of a diverse group of agents which generate nitric oxide (called NO donors) such as S-nitroso-N-acetyl-D,L-penicillamine (SNAP) can delay permeability barrier recovery in barrier-disrupted skin, but iNOS is still required for epidermal permeability barrier homeostasis. This review summarizes the regulatory role that NO plays in epidermal permeability barrier functions and the underlying mechanisms involved.
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Affiliation(s)
- Mao-Qiang Man
- Dermatology Service, Veterans Affairs Medical Center San Francisco, and Department of Dermatology, University of California San Francisco, CA, USA,Dermatology Hospital, Southern Medical University, Guangdong 510091, China
| | - Joan S. Wakefield
- Dermatology Service, Veterans Affairs Medical Center San Francisco, and Department of Dermatology, University of California San Francisco, CA, USA
| | - Theodora M. Mauro
- Dermatology Service, Veterans Affairs Medical Center San Francisco, and Department of Dermatology, University of California San Francisco, CA, USA
| | - Peter M. Elias
- Dermatology Service, Veterans Affairs Medical Center San Francisco, and Department of Dermatology, University of California San Francisco, CA, USA
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10
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Yang L, Yan Y. Emerging Roles of Post-Translational Modifications in Skin Diseases: Current Knowledge, Challenges and Future Perspectives. J Inflamm Res 2022; 15:965-975. [PMID: 35177923 PMCID: PMC8846607 DOI: 10.2147/jir.s339296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022] Open
Abstract
Post-translational modifications (PTMs) of proteins represent as a key step in regulating their biological functions and dynamic interaction with other players. This process is fine-tuned by a myriad of enzymes named “writers, readers and erasers” whose actions are precisely controlled. Either the mutation, aberration in the expression of the aforementioned enzymes or their substrates have shown to participate in the pathogenesis of various skin diseases such as melanoma, vitiligo, psoriasis, eczema, atopic dermatitis and inherited dermatological diseases. It is becoming increasingly clear that key transcriptional factors, inflammation-related molecules are prone to PTMs. Despite their importance in regulating key processes including inflammation, keratinocyte apoptosis, proliferation and differentiation, PTMs have received less attention due to the challenges involved. Here in this review we summarize the role of the most common types and the newly discovered PTMs, including acetylation, glycosylation, citrullination, PARylation and sumoylation in dermatoses and surveys the recent progress in PTM-based therapeutic approaches in skin diseases.
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Affiliation(s)
- Luting Yang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, People’s Republic of China
- Correspondence: Luting Yang; Yaping Yan, Email ;
| | - Yaping Yan
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, People’s Republic of China
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11
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Chiu LY, Huang DY, Lin WW. PARP-1 regulates inflammasome activity by poly-ADP-ribosylation of NLRP3 and interaction with TXNIP in primary macrophages. Cell Mol Life Sci 2022; 79:108. [PMID: 35098371 PMCID: PMC8801414 DOI: 10.1007/s00018-022-04138-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/17/2021] [Accepted: 01/06/2022] [Indexed: 12/28/2022]
Abstract
Poly(ADP-ribose) polymerase-1 (PARP-1) plays an essential role in DNA repair by catalyzing the polymerization of ADP-ribose unit to target proteins. Several studies have shown that PARP-1 can regulate inflammatory responses in various disease models. The intracellular Nod-like receptor NLRP3 has emerged as the most crucial innate immune receptor because of its broad specificity in mediating immune response to pathogen invasion and danger signals associated with cellular damage. In our study, we found NLRP3 stimuli-induced caspase-1 maturation and IL-1β production were impaired by PARP-1 knockout or PARP-1 inhibition in bone marrow-derived macrophages (BMDM). The step 1 signal of NLRP3 inflammasome activation was not affected by PARP-1 deficiency. Moreover, ATP-induced cytosolic ROS production was lower in Parp-1-/- BMDM, resulting in the decreased inflammasome complex assembly. PARP-1 can translocate to cytosol upon ATP stimulation and trigger the PARylation modification on NLRP3, leading to NLRP3 inflammasome assembly. PARP-1 was also a bridge between NLRP3 and thioredoxin-interacting protein (TXNIP) and participated in NLRP3/TXNIP complex formation for inflammasome activation. Overall, PARP-1 positively regulates NLRP3 inflammasome activation via increasing ROS production and interaction with TXNIP and NLRP3, leading to PARylation of NLRP3. Our data demonstrate a novel regulatory mechanism for NLRP3 inflammasome activation by PARP-1. Therefore, PARP-1 can serve as a potential target in the treatment of IL-1β associated inflammatory diseases.
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Affiliation(s)
- Ling-Ya Chiu
- Department of Pharmacology, College of Medicine, National Taiwan University, Rm. 1119, 11F., No. 1, Sec. 1, Ren Ai Rd., Zhongzheng Dist., Taipei, 100, Taiwan
| | - Duen-Yi Huang
- Department of Pharmacology, College of Medicine, National Taiwan University, Rm. 1119, 11F., No. 1, Sec. 1, Ren Ai Rd., Zhongzheng Dist., Taipei, 100, Taiwan
| | - Wan-Wan Lin
- Department of Pharmacology, College of Medicine, National Taiwan University, Rm. 1119, 11F., No. 1, Sec. 1, Ren Ai Rd., Zhongzheng Dist., Taipei, 100, Taiwan.
- Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei, Taiwan.
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan.
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12
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PARPs in lipid metabolism and related diseases. Prog Lipid Res 2021; 84:101117. [PMID: 34450194 DOI: 10.1016/j.plipres.2021.101117] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/10/2021] [Accepted: 08/18/2021] [Indexed: 12/28/2022]
Abstract
PARPs and tankyrases (TNKS) represent a family of 17 proteins. PARPs and tankyrases were originally identified as DNA repair factors, nevertheless, recent advances have shed light on their role in lipid metabolism. To date, PARP1, PARP2, PARP3, tankyrases, PARP9, PARP10, PARP14 were reported to have multi-pronged connections to lipid metabolism. The activity of PARP enzymes is fine-tuned by a set of cholesterol-based compounds as oxidized cholesterol derivatives, steroid hormones or bile acids. In turn, PARPs modulate several key processes of lipid homeostasis (lipotoxicity, fatty acid and steroid biosynthesis, lipoprotein homeostasis, fatty acid oxidation, etc.). PARPs are also cofactors of lipid-responsive nuclear receptors and transcription factors through which PARPs regulate lipid metabolism and lipid homeostasis. PARP activation often represents a disruptive signal to (lipid) metabolism, and PARP-dependent changes to lipid metabolism have pathophysiological role in the development of hyperlipidemia, obesity, alcoholic and non-alcoholic fatty liver disease, type II diabetes and its complications, atherosclerosis, cardiovascular aging and skin pathologies, just to name a few. In this synopsis we will review the evidence supporting the beneficial effects of pharmacological PARP inhibitors in these diseases/pathologies and propose repurposing PARP inhibitors already available for the treatment of various malignancies.
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13
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McLaren A, Cartwright D, Ross E, Roxburgh P. First-Line PARP Inhibitors-Emerging Side Effects Require Caution: A Case of PARPi-Induced Pneumonitis. JOURNAL OF IMMUNOTHERAPY AND PRECISION ONCOLOGY 2021; 4:171-174. [PMID: 35663102 PMCID: PMC9138441 DOI: 10.36401/jipo-20-33] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/12/2021] [Accepted: 02/18/2021] [Indexed: 06/04/2023]
Abstract
Niraparib, an inhibitor of poly(adenosine diphosphate [ADP]-ribose) 1 and 2, has been shown to improve progression free survival in patients when used as maintenance treatment after first-line platinum-based chemotherapy in advanced stage (III to IV) high-grade ovarian cancer, and after platinum-based chemotherapy for relapsed disease. For grades greater than III, commonly reported side effects include bone marrow suppression (thrombocytopenia, neutropenia, and anemia) and hypertension. However, grade ≥ III pneumonitis was not reported in phase III trials (PRIMA or NOVA). We present a case of life-threatening niraparib-induced pneumonitis. With recent approval for use of first-line maintenance niraparib in the United States and Europe, knowledge of the side effects and how to manage them is vital.
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Affiliation(s)
| | - Douglas Cartwright
- Beatson Institute for Cancer Research, University of Glasgow, Glasgow, United Kingdom
| | - Ewen Ross
- Respiratory Department, Queen Elizabeth University Hospital, Glasgow, United Kingdom
| | - Patricia Roxburgh
- Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
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14
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Lin Y, Zhang W, Li B, Wang G. Keratin 17 in psoriasis: Current understanding and future perspectives. Semin Cell Dev Biol 2021; 128:112-119. [PMID: 34229948 DOI: 10.1016/j.semcdb.2021.06.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 06/16/2021] [Accepted: 06/23/2021] [Indexed: 11/17/2022]
Abstract
Keratin 17 (K17) is a multifaceted cytoskeletal protein that is not commonly expressed in the epidermis under normal physiological conditions. However, in psoriasis, K17 is overexpressed in the suprabasal layer of the epidermis and plays an important role in the pathogenesis of the disease. In this review, we have summarized our findings and those reported in other studies concerning the pathogenic functions of K17, as well as the mechanisms underlying the increase in K17 expression in psoriasis. K17 exerts both pro-proliferative and pro-inflammatory effects on keratinocytes. Moreover, K17 peptides trigger autoreactive T cells and promote psoriasis-related cytokine production. In turn, these cytokines modulate the expression, stability, and protein-protein interactions of K17 through transcriptional and translational regulation and post-translational modification of K17 in keratinocytes. Thus, a K17/T-cell/cytokine autoimmune loop is implicated in the pathogenesis of psoriasis, which is supported by the fact that therapies targeting K17 have achieved good outcomes in psoriasis-like mouse models. Future perspectives of K17 in psoriasis have also been discussed to provide potential directions for further studies.
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Affiliation(s)
- Yiting Lin
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Bing Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
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15
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Jhanji M, Rao CN, Sajish M. Towards resolving the enigma of the dichotomy of resveratrol: cis- and trans-resveratrol have opposite effects on TyrRS-regulated PARP1 activation. GeroScience 2021; 43:1171-1200. [PMID: 33244652 PMCID: PMC7690980 DOI: 10.1007/s11357-020-00295-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/28/2020] [Indexed: 02/07/2023] Open
Abstract
Unlike widely perceived, resveratrol (RSV) decreased the average lifespan and extended only the replicative lifespan in yeast. Similarly, although not widely discussed, RSV is also known to evoke neurite degeneration, kidney toxicity, atherosclerosis, premature senescence, and genotoxicity through yet unknown mechanisms. Nevertheless, in vivo animal models of diseases and human clinical trials demonstrate inconsistent protective and beneficial effects. Therefore, the mechanism of action of RSV that elicits beneficial effects remains an enigma. In a previously published work, we demonstrated structural similarities between RSV and tyrosine amino acid. RSV acts as a tyrosine antagonist and competes with it to bind to human tyrosyl-tRNA synthetase (TyrRS). Interestingly, although both isomers of RSV bind to TyrRS, only the cis-isomer evokes a unique structural change at the active site to promote its interaction with poly-ADP-ribose polymerase 1 (PARP1), a major determinant of cellular NAD+-dependent stress response. However, retention of trans-RSV in the active site of TyrRS mimics its tyrosine-bound conformation that inhibits the auto-poly-ADP-ribos(PAR)ylation of PARP1. Therefore, we proposed that cis-RSV-induced TyrRS-regulated auto-PARylation of PARP1 would contribute, at least in part, to the reported health benefits of RSV through the induction of protective stress response. This observation suggested that trans-RSV would inhibit TyrRS/PARP1-mediated protective stress response and would instead elicit an opposite effect compared to cis-RSV. Interestingly, most recent studies also confirmed the conversion of trans-RSV and its metabolites to cis-RSV in the physiological context. Therefore, the finding that cis-RSV and trans-RSV induce two distinct conformations of TyrRS with opposite effects on the auto-PARylation of PARP1 provides a potential molecular basis for the observed dichotomic effects of RSV under different experimental paradigms. However, the fact that natural RSV exists as a diastereomeric mixture of its cis and trans isomers and cis-RSV is also a physiologically relevant isoform has not yet gained much scientific attention.
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Affiliation(s)
- Megha Jhanji
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA
| | - Chintada Nageswara Rao
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA
| | - Mathew Sajish
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA.
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16
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Zhang LJ. Recent progress at the psoriasis and atopic dermatitis research front: An experimental dermatology perspective. Exp Dermatol 2021; 30:756-764. [PMID: 34057758 DOI: 10.1111/exd.14388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ling-Juan Zhang
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China.,Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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17
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Chiu LY, Wu NL, Hung CF, Bai P, Dai YS, Lin WW. PARP-1 involves in UVB-induced inflammatory response in keratinocytes and skin injury via regulation of ROS-dependent EGFR transactivation and p38 signaling. FASEB J 2021; 35:e21393. [PMID: 33570794 DOI: 10.1096/fj.202002285rr] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 01/11/2023]
Abstract
UV irradiation can injure the epidermis, resulting in sunburn, inflammation, and cutaneous tissue disorders. Previous studies demonstrate that EGFR in keratinocytes can be activated by UVB and contributes to inflammation. Poly (ADP-ribose) polymerase-1 (PARP-1) is a nuclear enzyme and plays an essential role in DNA repair under moderate stress. In this study, we set out to understand how PARP-1 regulates UVB irradiation-induced skin injury and interplays with EGFR to mediate the inflammation response. We found that PARP-1 deficiency exacerbated the UVB-induced inflammation, water loss, and back skin damage in mice. In human primary keratinocytes, UVB can activate PARP-1 and enhance DNA damage upon PARP-1 gene silencing. Moreover, PARP-1 silencing and PARP inhibitor olaparib can suppress UVB-induced COX-2 and MMP-1 expression, but enhance TNF-α and IL-8 expression. In addition, EGFR silencing or EGFR inhibition by gefitinib can decrease UVB-induced COX-2, TNF-α, and IL-8 expression, suggesting EGFR activation via paracrine action can mediate UVB-induced inflammation responses. Immunoblotting data revealed that PARP-1 inhibition decreases UVB-induced EGFR and p38 activation. Pharmacological inhibition of p38 also dramatically led to the attenuation of UVB-induced inflammatory gene expression. Of note, genetic ablation of PARP-1 or EGFR can attenuate UVB-induced ROS production, and antioxidant NAC can attenuate UVB-induced EGFR-p38 signaling axis and PARP-1 activation. These data suggest the regulatory loops among EGFR, PARP-1, and ROS upon UVB stress. PARP-1 not only serves DNA repair function but also orchestrates interactions to EGFR transactivation and ROS production, leading to p38 signaling for inflammatory gene expression in keratinocytes.
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Affiliation(s)
- Ling-Ya Chiu
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Nan-Lin Wu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chi-Feng Hung
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Péter Bai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,MTA-DE Lendület Laboratory of Cellular Metabolism, Debrecen, Hungary.,Research Center for Molecular Medicine, University of Debrecen, Debrecen, Hungary
| | - Yang-Shia Dai
- Department of Dermatology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wan-Wan Lin
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei, Taiwan.,Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
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18
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Atwood SX, Plikus MV. Fostering a healthy culture: Biological relevance of in vitro and ex vivo skin models. Exp Dermatol 2021; 30:298-303. [PMID: 33565670 DOI: 10.1111/exd.14296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Scott X Atwood
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, USA.,Center for Complex Biological Systems, University of California, Irvine, Irvine, CA, USA.,NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA, USA
| | - Maksim V Plikus
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, USA.,Center for Complex Biological Systems, University of California, Irvine, Irvine, CA, USA.,NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA, USA.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, USA
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19
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The role of ADP-ribose metabolism in metabolic regulation, adipose tissue differentiation, and metabolism. Genes Dev 2020; 34:321-340. [PMID: 32029456 PMCID: PMC7050491 DOI: 10.1101/gad.334284.119] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this review, Szanto et al. summarize the metabolic regulatory roles of PARP enzymes and their associated pathologies. Poly(ADP-ribose) polymerases (PARPs or ARTDs), originally described as DNA repair factors, have metabolic regulatory roles. PARP1, PARP2, PARP7, PARP10, and PARP14 regulate central and peripheral carbohydrate and lipid metabolism and often channel pathological disruptive metabolic signals. PARP1 and PARP2 are crucial for adipocyte differentiation, including the commitment toward white, brown, or beige adipose tissue lineages, as well as the regulation of lipid accumulation. Through regulating adipocyte function and organismal energy balance, PARPs play a role in obesity and the consequences of obesity. These findings can be translated into humans, as evidenced by studies on identical twins and SNPs affecting PARP activity.
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20
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Pazzaglia S, Pioli C. Multifaceted Role of PARP-1 in DNA Repair and Inflammation: Pathological and Therapeutic Implications in Cancer and Non-Cancer Diseases. Cells 2019; 9:cells9010041. [PMID: 31877876 PMCID: PMC7017201 DOI: 10.3390/cells9010041] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
PARP-1 (poly(ADP-ribose)-polymerase 1), mainly known for its protective role in DNA repair, also regulates inflammatory processes. Notably, defects in DNA repair and chronic inflammation may both predispose to cancer development. On the other hand, inhibition of DNA repair and inflammatory responses can be beneficial in cancer therapy and PARP inhibitors are currently used for their lethal effects on tumor cells. Furthermore, excess of PARP-1 activity has been associated with many tumors and inflammation-related clinical conditions, including asthma, sepsis, arthritis, atherosclerosis, and neurodegenerative diseases, to name a few. Activation and inhibition of PARP represent, therefore, a double-edged sword that can be exploited for therapeutic purposes. In our review, we will discuss recent findings highlighting the composite multifaceted role of PARP-1 in cancer and inflammation-related diseases.
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Affiliation(s)
- Simonetta Pazzaglia
- Correspondence: (S.P.); (C.P.); Tel.: +39-06-3048-6535 (S.P.); +39-06-3048-3398 (C.P.)
| | - Claudio Pioli
- Correspondence: (S.P.); (C.P.); Tel.: +39-06-3048-6535 (S.P.); +39-06-3048-3398 (C.P.)
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