1
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Rutecki S, Pakuła-Iwańska M, Leśniewska-Bocianowska A, Matuszewska J, Rychlewski D, Uruski P, Stryczyński Ł, Naumowicz E, Szubert S, Tykarski A, Mikuła-Pietrasik J, Książek K. Mechanisms of carboplatin- and paclitaxel-dependent induction of premature senescence and pro-cancerogenic conversion of normal peritoneal mesothelium and fibroblasts. J Pathol 2024; 262:198-211. [PMID: 37941520 DOI: 10.1002/path.6223] [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: 05/22/2023] [Revised: 09/08/2023] [Accepted: 09/27/2023] [Indexed: 11/10/2023]
Abstract
Carboplatin (CPT) and paclitaxel (PCT) are the optimal non-surgical treatment of epithelial ovarian cancer (EOC). Although their growth-restricting influence on EOC cells is well known, their impact on normal peritoneal cells, including mesothelium (PMCs) and fibroblasts (PFBs), is poorly understood. Here, we investigated whether, and if so, by what mechanism, CPT and PCT induce senescence of omental PMCs and PFBs. In addition, we tested whether PMC and PFB exposure to the drugs promotes the development of a pro-cancerogenic phenotype. The results showed that CPT and PCT induce G2/M growth arrest-associated senescence of normal peritoneal cells and that the strongest induction occurs when the drugs act together. PMCs senesce telomere-independently with an elevated p16 level and via activation of AKT and STAT3. In PFBs, telomeres shorten along with an induction of p21 and p53, and their senescence proceeds via the activation of ERK1/2. Oxidative stress in CPT + PCT-treated PMCs and PFBs is extensive and contributes causatively to their premature senescence. Both PMCs and PFBs exposed to CPT + PCT fuel the proliferation, migration, and invasion of established (A2780, OVCAR-3, SKOV-3) and primary EOCs, and this activity is linked with an overproduction of multiple cytokines altering the cancer cell transcriptome and controlled by p38 MAPK, NF-κB, STAT3, Notch1, and JAK1. Collectively, our findings indicate that CPT and PCT lead to iatrogenic senescence of normal peritoneal cells, which paradoxically and opposing therapeutic needs alters their phenotype towards pro-cancerogenic. It cannot be excluded that these adverse outcomes of chemotherapy may contribute to EOC relapse in the case of incomplete tumor eradication and residual disease initiation. © 2023 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Szymon Rutecki
- Department of Pathophysiology of Ageing and Civilization Diseases, Poznań University of Medical Sciences, Poznań, Poland
- Poznań University of Medical Sciences Doctoral School, Poznań, Poland
| | | | | | - Julia Matuszewska
- Department of Pathophysiology of Ageing and Civilization Diseases, Poznań University of Medical Sciences, Poznań, Poland
| | - Daniel Rychlewski
- Department of Pathophysiology of Ageing and Civilization Diseases, Poznań University of Medical Sciences, Poznań, Poland
| | - Paweł Uruski
- Department of Hypertensiology, Poznań University of Medical Sciences, Poznań, Poland
| | - Łukasz Stryczyński
- Department of Hypertensiology, Poznań University of Medical Sciences, Poznań, Poland
| | - Eryk Naumowicz
- General Surgery Ward, Medical Centre HCP, Poznań, Poland
| | - Sebastian Szubert
- Department of Gynecology, Division of Gynecologic Oncology, Poznań University of Medical Sciences, Poznań, Poland
| | - Andrzej Tykarski
- Department of Hypertensiology, Poznań University of Medical Sciences, Poznań, Poland
| | - Justyna Mikuła-Pietrasik
- Department of Pathophysiology of Ageing and Civilization Diseases, Poznań University of Medical Sciences, Poznań, Poland
| | - Krzysztof Książek
- Department of Pathophysiology of Ageing and Civilization Diseases, Poznań University of Medical Sciences, Poznań, Poland
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2
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Korbecki J, Gąssowska-Dobrowolska M, Wójcik J, Szatkowska I, Barczak K, Chlubek M, Baranowska-Bosiacka I. The Importance of CXCL1 in Physiology and Noncancerous Diseases of Bone, Bone Marrow, Muscle and the Nervous System. Int J Mol Sci 2022; 23:ijms23084205. [PMID: 35457023 PMCID: PMC9024980 DOI: 10.3390/ijms23084205] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/08/2022] [Accepted: 04/09/2022] [Indexed: 02/04/2023] Open
Abstract
This review describes the role of CXCL1, a chemokine crucial in inflammation as a chemoattractant for neutrophils, in physiology and in selected major non-cancer diseases. Due to the vast amount of available information, we focus on the role CXCL1 plays in the physiology of bones, bone marrow, muscle and the nervous system. For this reason, we describe its effects on hematopoietic stem cells, myoblasts, oligodendrocyte progenitors and osteoclast precursors. We also present the involvement of CXCL1 in diseases of selected tissues and organs including Alzheimer’s disease, epilepsy, herpes simplex virus type 1 (HSV-1) encephalitis, ischemic stroke, major depression, multiple sclerosis, neuromyelitis optica, neuropathic pain, osteoporosis, prion diseases, rheumatoid arthritis, tick-borne encephalitis (TBE), traumatic spinal cord injury and West Nile fever.
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Affiliation(s)
- Jan Korbecki
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72 Av., 70-111 Szczecin, Poland; (J.K.); (M.C.)
- Department of Ruminants Science, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Klemensa Janickiego 29 St., 71-270 Szczecin, Poland; (J.W.); (I.S.)
| | - Magdalena Gąssowska-Dobrowolska
- Department of Cellular Signalling, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland;
| | - Jerzy Wójcik
- Department of Ruminants Science, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Klemensa Janickiego 29 St., 71-270 Szczecin, Poland; (J.W.); (I.S.)
| | - Iwona Szatkowska
- Department of Ruminants Science, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Klemensa Janickiego 29 St., 71-270 Szczecin, Poland; (J.W.); (I.S.)
| | - Katarzyna Barczak
- Department of Conservative Dentistry and Endodontics, Pomeranian Medical University, Powstańców Wlkp. 72 Av., 70-111 Szczecin, Poland;
| | - Mikołaj Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72 Av., 70-111 Szczecin, Poland; (J.K.); (M.C.)
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wlkp. 72 Av., 70-111 Szczecin, Poland; (J.K.); (M.C.)
- Correspondence: ; Tel.: +48-914-661-515
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3
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Lehmann J, Narcisi R, Franceschini N, Chatzivasileiou D, Boer CG, Koevoet WJLM, Putavet D, Drabek D, van Haperen R, de Keizer PLJ, van Osch GJVM, Ten Berge D. WNT/beta-catenin signalling interrupts a senescence-induction cascade in human mesenchymal stem cells that restricts their expansion. Cell Mol Life Sci 2022; 79:82. [PMID: 35048158 PMCID: PMC8770385 DOI: 10.1007/s00018-021-04035-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 10/18/2021] [Accepted: 11/09/2021] [Indexed: 12/23/2022]
Abstract
Senescence, the irreversible cell cycle arrest of damaged cells, is accompanied by a deleterious pro-inflammatory senescence-associated secretory phenotype (SASP). Senescence and the SASP are major factors in aging, cancer, and degenerative diseases, and interfere with the expansion of adult cells in vitro, yet little is known about how to counteract their induction and deleterious effects. Paracrine signals are increasingly recognized as important senescence triggers and understanding their regulation and mode of action may provide novel opportunities to reduce senescence-induced inflammation and improve cell-based therapies. Here, we show that the signalling protein WNT3A counteracts the induction of paracrine senescence in cultured human adult mesenchymal stem cells (MSCs). We find that entry into senescence in a small subpopulation of MSCs triggers a secretome that causes a feed-forward signalling cascade that with increasing speed induces healthy cells into senescence. WNT signals interrupt this cascade by repressing cytokines that mediate this induction of senescence. Inhibition of those mediators by interference with NF-κB or interleukin 6 signalling reduced paracrine senescence in absence of WNT3A and promoted the expansion of MSCs. Our work reveals how WNT signals can antagonize senescence and has relevance not only for expansion of adult cells but can also provide new insights into senescence-associated inflammatory and degenerative diseases.
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Affiliation(s)
- Johannes Lehmann
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Cell Biology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Center for Molecular Medicine, Section Molecular Cancer Research, Division LAB, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Roberto Narcisi
- Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Natasja Franceschini
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Danai Chatzivasileiou
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Cindy G Boer
- Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Wendy J L M Koevoet
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Diana Putavet
- Center for Molecular Medicine, Section Molecular Cancer Research, Division LAB, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Genetics, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Dubravka Drabek
- Department of Cell Biology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Harbour Biomed, Rotterdam, the Netherlands
| | - Rien van Haperen
- Department of Cell Biology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Harbour Biomed, Rotterdam, the Netherlands
| | - Peter L J de Keizer
- Center for Molecular Medicine, Section Molecular Cancer Research, Division LAB, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Genetics, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Gerjo J V M van Osch
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Derk Ten Berge
- Department of Cell Biology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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4
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Lee AJ, Fraser E, Flowers B, Kim J, Wong K, Cataisson C, Liu H, Yang H, Lee MP, Yuspa SH, Li L. RAS induced senescence of skin keratinocytes is mediated through Rho-associated protein kinase (ROCK). Mol Carcinog 2021; 60:799-812. [PMID: 34534377 PMCID: PMC8585695 DOI: 10.1002/mc.23351] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/17/2021] [Accepted: 08/21/2021] [Indexed: 11/07/2022]
Abstract
Cellular senescence is a well-documented response to oncogene activation in many tissues. Multiple pathways are invoked to achieve senescence indicating its importance to counteract the transforming activities of oncogenic stimulation. We now report that the Rho-associated protein kinase (ROCK) signaling pathway is a critical regulator of oncogene-induced senescence in skin carcinogenesis. Transformation of mouse keratinocytes with oncogenic RAS upregulates ROCK activity and initiates a senescence response characterized by cell enlargement, growth inhibition, upregulation of senescence associated β-galactosidase (SAβgal) expression, and release of multiple pro-inflammatory factors comprising the senescence-associated secretory phenotype (SASP). The addition of the ROCK inhibitor Y-27632 and others prevents these senescence responses and maintains proliferating confluent RAS transformed keratinocyte cultures indefinitely. Mechanistically, oncogenic RAS transformation is associated with upregulation of cell cycle inhibitors p15Ink4b , p16Ink4a , and p19Arf and downregulation of p-AKT, all of which are reversed by Y-27632. RNA-seq analysis of Y-27632 treated RAS-transformed keratinocytes indicated that the inhibitor reduced growth-inhibitory gene expression profiles and maintained expression of proliferative pathways. Y-27632 also reduced the expression of NF-κB effector genes and the expression of IκBζ downstream mediators. The senescence inhibition from Y-27632 was reversible, and upon its removal, senescence reoccurred in vitro with rapid upregulation of cell cycle inhibitors, SASP expression, and cell detachment. Y-27632 treated cultured RAS-keratinocytes formed tumors in the absence of the inhibitor when placed in skin orthografts suggesting that factors in the tumor microenvironment can overcome the drive to senescence imparted by overactive ROCK activity.
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Affiliation(s)
- Alex J. Lee
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Elise Fraser
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Brittany Flowers
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Jee Kim
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Kenneth Wong
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Christophe Cataisson
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Huaitian Liu
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Howard Yang
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Maxwell P. Lee
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Stuart H. Yuspa
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
| | - Luowei Li
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda Maryland 20892
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5
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Ma Y, Liang Y, Liang N, Zhang Y, Xiao F. Identification and functional analysis of senescence-associated secretory phenotype of premature senescent hepatocytes induced by hexavalent chromium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111908. [PMID: 33440265 DOI: 10.1016/j.ecoenv.2021.111908] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Hexavalent chromium [Cr(VI)] is a common heavy metal pollutant that can cause a number of human disease, including inflammation and cancer. Senescent cells can secrete a variety of molecules known as senescence-associated secretory phenotype (SASP). Our previous studies have confirmed that Cr(VI) can induce premature senescence in L02 hepatocytes, but the composition and the function of the related SASP are still unknown. In order to understand the components of SASP secreted by senescent L02 hepatocytes under the action of Cr(VI), we applied LC-MS/MS-based label-free protein quantification. We found that three SASP components including Coactosin-like protein 1 (COTL1), Alpha-enolase (ENO1), and Peroxiredoxin 2 (PRDX2) were up-regulated, which were confirmed by western blotting and qRT-PCR. Evidence suggested that SASP may promote the development of tumor through chronic inflammatory response, therefore we identified and analyzed the potential biological functions and signaling pathways of these three SASP components using GO and KEGG methods. The interaction between SASP components was analyzed by STRING, and verified by Co-IP. We also found that ENO1 and PRDX2, which have direct interaction, can inhibit the growth and proliferation of wildtype hepatocytes and premature senescent hepatocytes, but can promote the proliferation and behavioral changes of liver tumor cells. The present study provides valuable clues for elucidation of the carcinogenic mechanism of Cr(VI), especially for further prevention and targeted treatment of Cr(VI)-related cancer.
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Affiliation(s)
- Yu Ma
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Yuehui Liang
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Ningjuan Liang
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Yujing Zhang
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Fang Xiao
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410078, PR China.
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6
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KarakÜlah G, Yandim C. Signature changes in the expressions of protein-coding genes, lncRNAs, and repeat elements in early and late cellular senescence. ACTA ACUST UNITED AC 2021; 44:356-370. [PMID: 33402863 PMCID: PMC7759191 DOI: 10.3906/biy-2005-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022]
Abstract
Replicative cellular senescence is the main cause of aging. It is important to note that early senescence is linked to tissue regeneration, whereas late senescence is known to trigger a chronically inflammatory phenotype. Despite the presence of various genome-wide studies, there is a lack of information on distinguishing early and late senescent phenotypes at the transcriptome level. Particularly, the changes in the noncoding RNA portion of the aging cell have not been fully elucidated. By utilising RNA sequencing data of fibroblasts, hereby, we are not only reporting changes in gene expression profiles and relevant biological processes in the early and late senescent phenotypes but also presenting significant differences in the expressions of many unravelled long noncoding RNAs (lncRNAs) and transcripts arisen from repetitive DNA. Our results indicate that, in addition to previously reported L1 elements, various LTR and DNA transposons, as well as members of the classical satellites including HSAT5 and α-satellites (ALR/Alpha), are expressed at higher levels in late senescence. Moreover, we revealed finer links between the expression levels of repeats with the genes located near them and known to be involved in cell cycle and senescence. Noncoding elements reported here provide a new perspective to be explored in further experimental studies.
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Affiliation(s)
- Gökhan KarakÜlah
- İzmir Biomedicine and Genome Center, İzmir Turkey.,İzmir International Biomedicine and Genome Institute, Dokuz Eylül University, İzmir Turkey
| | - Cihangir Yandim
- İzmir Biomedicine and Genome Center, İzmir Turkey.,Department of Genetics and Bioengineering, Faculty of Engineering, İzmir University of Economics, İzmir Turkey
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7
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Cuollo L, Antonangeli F, Santoni A, Soriani A. The Senescence-Associated Secretory Phenotype (SASP) in the Challenging Future of Cancer Therapy and Age-Related Diseases. BIOLOGY 2020; 9:biology9120485. [PMID: 33371508 PMCID: PMC7767554 DOI: 10.3390/biology9120485] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 12/13/2022]
Abstract
Simple Summary A fundamental feature of cellular senescence is the emergence of the Senescence-Associated Secretory Phenotype (SASP), which represents a considerable source of inflammatory and tissue-remodeling cues. The pathophysiological relevance of senescence and SASP has generated a fertile area of research aimed at manipulating the SASP to fight cancer and age-related conditions. This review enlightens the most important mechanisms that regulate the SASP and summarizes the current evidence on the feasibility of intervening on its composition, providing a reading frame of the general potentialities of SASP modulation. Abstract Cellular senescence represents a robust tumor-protecting mechanism that halts the proliferation of stressed or premalignant cells. However, this state of stable proliferative arrest is accompanied by the Senescence-Associated Secretory Phenotype (SASP), which entails the copious secretion of proinflammatory signals in the tissue microenvironment and contributes to age-related conditions, including, paradoxically, cancer. Novel therapeutic strategies aim at eliminating senescent cells with the use of senolytics or abolishing the SASP without killing the senescent cell with the use of the so-called “senomorphics”. In addition, recent works demonstrate the possibility of modifying the composition of the secretome by genetic or pharmacological intervention. The purpose is not to renounce the potent immunostimulatory nature of SASP, but rather learning to modulate it for combating cancer and other age-related diseases. This review describes the main molecular mechanisms regulating the SASP and reports the evidence of the feasibility of abrogating or modulating the SASP, discussing the possible implications of both strategies.
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Affiliation(s)
- Lorenzo Cuollo
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, 00161 Rome, Italy; (L.C.); (A.S.)
- Center for Life Nano Science, Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy
| | - Fabrizio Antonangeli
- Institute of Molecular Biology and Pathology, National Research Council (CNR), 00185 Rome, Italy;
| | - Angela Santoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, 00161 Rome, Italy; (L.C.); (A.S.)
- IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Neuromed, 86077 Pozzilli, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, 00161 Rome, Italy; (L.C.); (A.S.)
- Correspondence:
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8
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Arra M, Swarnkar G, Ke K, Otero JE, Ying J, Duan X, Maruyama T, Rai MF, O'Keefe RJ, Mbalaviele G, Shen J, Abu-Amer Y. LDHA-mediated ROS generation in chondrocytes is a potential therapeutic target for osteoarthritis. Nat Commun 2020; 11:3427. [PMID: 32647171 PMCID: PMC7347613 DOI: 10.1038/s41467-020-17242-0] [Citation(s) in RCA: 167] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/19/2020] [Indexed: 01/20/2023] Open
Abstract
The contribution of inflammation to the chronic joint disease osteoarthritis (OA) is unclear, and this lack of clarity is detrimental to efforts to identify therapeutic targets. Here we show that chondrocytes under inflammatory conditions undergo a metabolic shift that is regulated by NF-κB activation, leading to reprogramming of cell metabolism towards glycolysis and lactate dehydrogenase A (LDHA). Inflammation and metabolism can reciprocally modulate each other to regulate cartilage degradation. LDHA binds to NADH and promotes reactive oxygen species (ROS) to induce catabolic changes through stabilization of IκB-ζ, a critical pro-inflammatory mediator in chondrocytes. IκB-ζ is regulated bi-modally at the stages of transcription and protein degradation. Overall, this work highlights the function of NF-κB activity in the OA joint as well as a ROS promoting function for LDHA and identifies LDHA as a potential therapeutic target for OA treatment.
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Affiliation(s)
- Manoj Arra
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Gaurav Swarnkar
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Ke Ke
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Jesse E Otero
- OrthoCarolina Hip and Knee Center, Charlotte, NC, 28207, USA
| | - Jun Ying
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | | | - Takashi Maruyama
- Department of Immunology, Akita University School of Medicine, Akita, Japan
- Mucosal Immunology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Muhammad Farooq Rai
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Regis J O'Keefe
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Gabriel Mbalaviele
- Bone and Mineral Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Jie Shen
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Yousef Abu-Amer
- Department of Orthopaedic Surgery and Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA.
- Shriners Hospital for Children, St. Louis, MO, 63110, USA.
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9
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Zhou X, Hong Y, Zhang H, Li X. Mesenchymal Stem Cell Senescence and Rejuvenation: Current Status and Challenges. Front Cell Dev Biol 2020; 8:364. [PMID: 32582691 PMCID: PMC7283395 DOI: 10.3389/fcell.2020.00364] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/23/2020] [Indexed: 12/14/2022] Open
Abstract
Over the past decades, mesenchymal stem cell (MSC)-based therapy has been intensively investigated and shown promising results in the treatment of various diseases due to their easy isolation, multiple lineage differentiation potential and immunomodulatory effects. To date, hundreds of phase I and II clinical trials using MSCs have been completed and many are ongoing. Accumulating evidence has shown that transplanted allogeneic MSCs lose their beneficial effects due to immunorejection. Nevertheless, the function of autologous MSCs is adversely affected by age, a process termed senescence, thus limiting their therapeutic potential. Despite great advances in knowledge, the potential mechanisms underlying MSC senescence are not entirely clear. Understanding the molecular mechanisms that contribute to MSC senescence is crucial when exploring novel strategies to rejuvenate senescent MSCs. In this review, we aim to provide an overview of the biological features of senescent MSCs and the recent progress made regarding the underlying mechanisms including epigenetic changes, autophagy, mitochondrial dysfunction and telomere shortening. We also summarize the current approaches to rejuvenate senescent MSCs including gene modification and pretreatment strategies. Collectively, rejuvenation of senescent MSCs is a promising strategy to enhance the efficacy of autologous MSC-based therapy, especially in elderly patients.
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Affiliation(s)
- Xueke Zhou
- Department of Emergency Medicine, Department of Emergency and Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China
| | - Yimei Hong
- Department of Emergency Medicine, Department of Emergency and Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hao Zhang
- School of Pharmacy, Bengbu Medical College, Bengbu, China
| | - Xin Li
- Department of Emergency Medicine, Department of Emergency and Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China
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10
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Lim H, Heo MY, Kim HP. Flavonoids: Broad Spectrum Agents on Chronic Inflammation. Biomol Ther (Seoul) 2019; 27:241-253. [PMID: 31006180 PMCID: PMC6513185 DOI: 10.4062/biomolther.2019.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 12/17/2022] Open
Abstract
Flavonoids are major plant constituents with numerous biological/pharmacological actions both in vitro and in vivo. Of these actions, their anti-inflammatory action is prominent. They can regulate transcription of many proinflammatory genes such as cyclooxygenase-2/inducible nitric oxide synthase and many cytokines/chemokines. Recent studies have demonstrated that certain flavonoid derivatives can affect pathways of inflammasome activation and autophagy. Certain flavonoids can also accelerate the resolution phase of inflammation, leading to avoiding chronic inflammatory stimuli. All these pharmacological actions with newly emerging activities render flavonoids to be potential therapeutics for chronic inflammatory disorders including arthritic inflammation, meta-inflammation, and inflammaging. Recent findings of flavonoids are summarized and future perspectives are presented in this review.
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Affiliation(s)
- Hyun Lim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Moon Young Heo
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hyun Pyo Kim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
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11
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Liu S, Zheng Z, Ji S, Liu T, Hou Y, Li S, Li G. Resveratrol reduces senescence-associated secretory phenotype by SIRT1/NF-κB pathway in gut of the annual fish Nothobranchius guentheri. FISH & SHELLFISH IMMUNOLOGY 2018; 80:473-479. [PMID: 29908321 DOI: 10.1016/j.fsi.2018.06.027] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 05/31/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Senescent cells display a senescence-associated secretory phenotype (SASP), which contributes to aging. Resveratrol, an activator of SIRT1, has anti-aging, anti-inflammatory, anti-oxidant, anti-free radical and other pharmacological effects. The genus of the annual fish Nothobranchius has become an emerging animal model for studying aging. However, the underlying mechanism for resveratrol to delay aging by SASP regulation has not been elucidated in vertebrates. In this study, the annual fish N. guentheri were fed with resveratrol for long-term treatment. The results showed that resveratrol reversed intensive senescence-associated β-galactosidase activity with aging process, down-regulated levels of SASP-associated proinflammatory cytokines IL-8 and TNFα, and up-regulated expression of anti-inflammatory cytokine IL-10 in gut of the fish. Resveratrol increased SIRT1 expression, and inhibited NF-κB by decreasing RelA/p65, Ac-RelA/p65 and p-IκBα levels and by increasing the interaction between SIRT1 and RelA/p65. Moreover, resveratrol reversed the decline of intestinal epithelial cells (IECs) and intestinal stem cells (ISCs) caused by aging in gut of the fish. Together, our results implied that resveratrol inhibited SASP through SIRT1/NF-κB signaling pathway and delayed aging of the annual fish N. guentheri.
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Affiliation(s)
- Shan Liu
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Zhaodi Zheng
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Shuhua Ji
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Tingting Liu
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Yanhan Hou
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Shasha Li
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Guorong Li
- Shandong Provincial Key Laboratory of Animal Resistant, School of Life Sciences, Shandong Normal University, Jinan, China.
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12
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Staal J, Beyaert R. Inflammation and NF-κB Signaling in Prostate Cancer: Mechanisms and Clinical Implications. Cells 2018; 7:E122. [PMID: 30158439 PMCID: PMC6162478 DOI: 10.3390/cells7090122] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 12/26/2022] Open
Abstract
Prostate cancer is a highly prevalent form of cancer that is usually slow-developing and benign. Due to its high prevalence, it is, however, still the second most common cause of death by cancer in men in the West. The higher prevalence of prostate cancer in the West might be due to elevated inflammation from metabolic syndrome or associated comorbidities. NF-κB activation and many other signals associated with inflammation are known to contribute to prostate cancer malignancy. Inflammatory signals have also been associated with the development of castration resistance and resistance against other androgen depletion strategies, which is a major therapeutic challenge. Here, we review the role of inflammation and its link with androgen signaling in prostate cancer. We further describe the role of NF-κB in prostate cancer cell survival and proliferation, major NF-κB signaling pathways in prostate cancer, and the crosstalk between NF-κB and androgen receptor signaling. Several NF-κB-induced risk factors in prostate cancer and their potential for therapeutic targeting in the clinic are described. A better understanding of the inflammatory mechanisms that control the development of prostate cancer and resistance to androgen-deprivation therapy will eventually lead to novel treatment options for patients.
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Affiliation(s)
- Jens Staal
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, 9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium.
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13
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Wandrer F, Han B, Liebig S, Schlue J, Manns MP, Schulze-Osthoff K, Bantel H. Senescence mirrors the extent of liver fibrosis in chronic hepatitis C virus infection. Aliment Pharmacol Ther 2018; 48:270-280. [PMID: 29863282 DOI: 10.1111/apt.14802] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 12/27/2017] [Accepted: 04/24/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND Chronic viral hepatitis is linked to fibrotic liver injury that can progress to liver cirrhosis with its associated complications. Recent evidence suggests a role of senescence in liver fibrosis, although the senescence regulators contributing to fibrosis progression remain unclear. AIM To investigate the role of senescence and different senescence markers for fibrosis progression in patients with chronic hepatitis C virus (HCV) infection. METHODS The expression of the cell cycle inhibitors p21, p27 and p16 as well as the senescence markers p-HP1γ and γ-H2AX was analysed in liver tissue with different fibrosis stages. Senescence-associated chitotriosidase activity was measured in sera of HCV patients (n = 61) and age-matched healthy individuals (n = 22). RESULTS We found a remarkable up-regulation of the cell cycle inhibitors and senescence markers in chronic HCV infection compared to healthy liver tissue. Liver tissue with relevant fibrosis stages (F2-3) or cirrhosis (F4) revealed a significant increase in senescent cells compared to livers with no or minimal fibrosis (F0-1). In cirrhotic livers, a significantly higher number of p-HP1γ, p21 and p27 positive cells was detected compared to liver tissue with F2-3 fibrosis. Importantly, we identified T-cells as the dominant cell type contributing to increased senescence during fibrosis progression. Compared to healthy individuals, serum chitotriosidase was significantly elevated and correlated with histological fibrosis stages and liver stiffness as assessed by transient elastography. CONCLUSIONS Senescence of hepatic T-cells is enhanced in chronic viral hepatitis and increases with fibrosis progression. Serological detection of senescence-associated chitotriosidase might allow for the non-invasive detection of relevant fibrosis stages.
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Affiliation(s)
- F Wandrer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - B Han
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | - S Liebig
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - J Schlue
- Department of Pathology, Hannover Medical School, Hannover, Germany
| | - M P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Centre for Infection Research (DZIF), Hannover, Germany
| | - K Schulze-Osthoff
- German Cancer Consortium (DKTK) and German Cancer Research Centre (DKFZ), Heidelberg, Germany.,Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - H Bantel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Centre for Infection Research (DZIF), Hannover, Germany
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14
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Maciel-Barón LÁ, Moreno-Blas D, Morales-Rosales SL, González-Puertos VY, López-Díazguerrero NE, Torres C, Castro-Obregón S, Königsberg M. Cellular Senescence, Neurological Function, and Redox State. Antioxid Redox Signal 2018; 28:1704-1723. [PMID: 28467755 DOI: 10.1089/ars.2017.7112] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
SIGNIFICANCE Cellular senescence, characterized by permanent cell cycle arrest, has been extensively studied in mitotic cells such as fibroblasts. However, senescent cells have also been observed in the brain. Even though it is recognized that cellular energetic metabolism and redox homeostasis are perturbed in the aged brain and neurodegenerative diseases (NDDs), it is still unknown which alterations in the overall physiology can stimulate cellular senescence induction and their relationship with the former events. Recent Advances: Recent findings have shown that during prolonged inflammatory and pathologic events, the blood-brain barrier could be compromised and immune cells might enter the brain; this fact along with the brain's high oxygen dependence might result in oxidative damage to macromolecules and therefore senescence induction. Thus, cellular senescence in different brain cell types is revised here. CRITICAL ISSUES Most information related to cellular senescence in the brain has been obtained from research in glial cells since it has been assumed that the senescent phenotype is a feature exclusive to mitotic cells. Nevertheless, neurons with senescence hallmarks have been observed in old mouse brains. Therefore, although this is a controversial topic in the field, here we summarize and integrate the observations from several studies and propose that neurons indeed senesce. FUTURE DIRECTIONS It is still unknown which alterations in the overall metabolism can stimulate senescence induction in the aged brain, what are the mechanisms and signaling pathways, and what is their relationship to NDD development. The understanding of these processes will expose new targets to intervene age-associated pathologies.-Antioxid. Redox Signal. 28, 1704-1723.
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Affiliation(s)
- Luis Ángel Maciel-Barón
- 1 División de Ciencias Biológicas y de la Salud, Department Ciencias de la Salud, Universidad Autónoma Metropolitana Iztapalapa , Iztapalapa, México
| | - Daniel Moreno-Blas
- 2 Departamento de Neurodesarrollo y Fisiología, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México , Ciudad de México, México
| | - Sandra Lizbeth Morales-Rosales
- 1 División de Ciencias Biológicas y de la Salud, Department Ciencias de la Salud, Universidad Autónoma Metropolitana Iztapalapa , Iztapalapa, México
| | - Viridiana Yazmín González-Puertos
- 1 División de Ciencias Biológicas y de la Salud, Department Ciencias de la Salud, Universidad Autónoma Metropolitana Iztapalapa , Iztapalapa, México
| | - Norma Edith López-Díazguerrero
- 1 División de Ciencias Biológicas y de la Salud, Department Ciencias de la Salud, Universidad Autónoma Metropolitana Iztapalapa , Iztapalapa, México
| | - Claudio Torres
- 3 Department of Pathology and Laboratory Medicine, Drexel University College of Medicine , Philadelphia, Pennsylvania
| | - Susana Castro-Obregón
- 2 Departamento de Neurodesarrollo y Fisiología, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México , Ciudad de México, México
| | - Mina Königsberg
- 1 División de Ciencias Biológicas y de la Salud, Department Ciencias de la Salud, Universidad Autónoma Metropolitana Iztapalapa , Iztapalapa, México
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15
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Selenium unmasks protective iron armor: A possible defense against cutaneous inflammation and cancer. Biochim Biophys Acta Gen Subj 2018; 1862:2518-2527. [PMID: 29852199 DOI: 10.1016/j.bbagen.2018.05.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/09/2018] [Accepted: 05/23/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND A link between selenium deficiency and inflammatory skin diseases have been noted by many, but this link is still not well understood. We have previously studied the efficacy of ceramide analogs, based on the fire ant venom Solenopsin A, against our psoriasis animal model. Treatment of animals with solenopsin analogs resulted in significantly improved skin as well as in a coordinate downregulation of selenoproteins, namely Glutathione Peroxidase 4 (GPX4). We thus hypothesize that ferroptosis may be a physiologic process that may protect the skin from both inflammatory and neoplastic processes. METHODS We analyze and compare gene expression profiles in the GEO database from clinical skin samples taken from healthy patients and psoriasis patients (both involved and noninvolved skin lesions). We validated the gene expression results against a second, independent, cohort from the GEO database. RESULTS Significant reduction in gene expression of GPX4, elevated expression of Nrf2 downstream targets, and expression profiles mirroring erastin-inhibition of Cystine/Glutamate Antiporter-System XC activity in psoriatic skin lesions, compared to both noninvolved skin and healthy patient samples, suggest an innately inducible mechanism of ferroptosis. CONCLUSIONS We present data that may indicate selenoproteins, particularly GPX4, in resolving inflammation and skin cancer, including the novel hypothesis that the human organism may downregulate GPX4 and reactive oxygen (REDOX) regulating proteins in the skin as a way of resolving psoriasis and nonmelanoma skin cancer through increased reactive oxygen species. Further studies are needed to investigate ferroptosis as a possible physiologic mechanism for eliminating inflammatory and malignant tissues. GENERAL SIGNIFICANCE This study provides a fresh framework for understanding the seemingly contradictory effects of selenium supplementation. In addition, it offers a novel explanation of how physiologic upregulation of ferroptosis and downregulation of selenoprotein synthesis may mediate resolution of inflammation and carcinogenesis. This is of therapeutic significance.
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16
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Kang DH, Park YS, Lee DY. Senotherapy for attenuation of cellular senescence in aging and organ implantation. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.08.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Willems M, Dubois N, Musumeci L, Bours V, Robe PA. IκBζ: an emerging player in cancer. Oncotarget 2018; 7:66310-66322. [PMID: 27579619 PMCID: PMC5323236 DOI: 10.18632/oncotarget.11624] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 08/23/2016] [Indexed: 01/12/2023] Open
Abstract
IκBζ, an atypical member of the nuclear IκB family of proteins, is expressed at low levels in most resting cells, but is induced upon stimulation of Toll-like/IL-1 receptors through an IRAK1/IRAK4/NFκB-dependent pathway. Like its homolog Bcl3, IκBζ can regulate the transcription of a set of inflamatory genes through its association with the p50 or p52 subunits of NF-κB. Long studied as a key component of the immune response, IκBζ emerges as an important regulator of inflammation, cell proliferation and survival. As a result, growing evidence support the role of this transcription factor in the pathogenesis number of human hematological and solid malignancies.
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Affiliation(s)
- Marie Willems
- Department of Human Genetics and GIGA Research Center, University of Liège, Liege, Belgium
| | - Nadège Dubois
- Department of Human Genetics and GIGA Research Center, University of Liège, Liege, Belgium
| | - Lucia Musumeci
- Department of Human Genetics and GIGA Research Center, University of Liège, Liege, Belgium
| | - Vincent Bours
- Department of Human Genetics and GIGA Research Center, University of Liège, Liege, Belgium
| | - Pierre A Robe
- Department of Human Genetics and GIGA Research Center, University of Liège, Liege, Belgium.,Department of Neurology and Neurosurgery, T&P Bohnenn Laboratory for Neuro-Oncology, Brain Center Rudolf Magnus, University Medical Center of Utrecht, Heidelberglaan, Utrecht, The Netherlands
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18
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Yin L, Guo X, Zhang C, Cai Z, Xu C. In silico analysis of expression data during the early priming stage of liver regeneration after partial hepatectomy in rat. Oncotarget 2018; 9:11794-11804. [PMID: 29545936 PMCID: PMC5837750 DOI: 10.18632/oncotarget.24370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 12/05/2017] [Indexed: 12/13/2022] Open
Abstract
The priming stage is the first step of liver regeneration (LR). This stage is characterized by the transition from G0 to cell cycle for 4 hours in rat. In this study, individual gene level and gene set level (GSEA) was performed to identify the candidate genes and significantly changed biological processes at 2 h after partial hepatectomy (PH). The leading edge analysis is performed to identify the key genes and iRegulon was employed for transcription factor (TF) analysis. A total of 53 differentially expressed genes were identified using RMA package based on R language at 2 h after PH, including the transcription factor, enzyme and cytokine. As the most important genes in our analysis, Socs3 was selected with a special analysis so as to find the pathways correlate to the expression of it. The changed significantly pathways in LR involved response to stress, ATP metabolism, and regulation of cell cycle mainly. Several transcription factors were identified including Stat5a, Cnot3 and zfp384. Taken together, at the early priming stage of LR in rat, the liver is experiencing some changes including response to stress, activated ATP metabolism and inhibition of cell cycle. Our analysis provided a detailed and comprehensive map for further research of the early priming stage of LR in rat.
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Affiliation(s)
- Li Yin
- College of Life Science, Henan Normal University, Xinxiang 453007, Henan Province, China.,State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Engineering Laboratory for Bioengineering and Drug Development, Henan Normal University, Xinxiang 453007, Henan Province, China.,Luohe Medical College, Luohe 462002, Henan Province, China
| | - Xueqiang Guo
- College of Life Science, Henan Normal University, Xinxiang 453007, Henan Province, China
| | - Chunyan Zhang
- College of Life Science, Henan Normal University, Xinxiang 453007, Henan Province, China
| | - Zhihui Cai
- College of Life Science, Henan Normal University, Xinxiang 453007, Henan Province, China.,Luohe Medical College, Luohe 462002, Henan Province, China
| | - Cunshuan Xu
- College of Life Science, Henan Normal University, Xinxiang 453007, Henan Province, China.,State Key Laboratory Cultivation Base for Cell Differentiation Regulation and Henan Engineering Laboratory for Bioengineering and Drug Development, Henan Normal University, Xinxiang 453007, Henan Province, China
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19
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Cadoná FC, Rosa JL, Schneider T, Cubillos-Rojas M, Sánchez-Tena S, Azzolin VF, Assmann CE, Machado AK, Ribeiro EE, da Cruz IBM. Guaraná, a Highly Caffeinated Food, Presentsin vitroAntitumor Activity in Colorectal and Breast Cancer Cell Lines by Inhibiting AKT/mTOR/S6K and MAPKs Pathways. Nutr Cancer 2017; 69:800-810. [DOI: 10.1080/01635581.2017.1324994] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Francine C. Cadoná
- Graduate Program in Biochemistry and Toxicology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Jose L. Rosa
- Departament de Ciències Fisiològiques II, Campus de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Taiane Schneider
- Departament de Ciències Fisiològiques II, Campus de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Monica Cubillos-Rojas
- Departament de Ciències Fisiològiques II, Campus de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Susana Sánchez-Tena
- Departament de Ciències Fisiològiques II, Campus de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Verônica F. Azzolin
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Charles E. Assmann
- Graduate Program in Biochemistry and Toxicology, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Euler E. Ribeiro
- Third Age Open University, University of Amazonas State, Manaus, Brazil
| | - Ivana Beatrice M. da Cruz
- Graduate Program in Biochemistry and Toxicology, Federal University of Santa Maria, Santa Maria, Brazil
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
- Graduate Program in Gerontology, Federal University of Santa Maria, Santa Maria, Brazil
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20
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Lim H, Park BK, Shin SY, Kwon YS, Kim HP. Methyl caffeate and some plant constituents inhibit age-related inflammation: effects on senescence-associated secretory phenotype (SASP) formation. Arch Pharm Res 2017; 40:524-535. [PMID: 28299617 DOI: 10.1007/s12272-017-0909-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/08/2017] [Indexed: 11/28/2022]
Abstract
During aging, cells secrete molecules called senescence-associated secretory phenotype (SASP). They constitute chronic low-grade inflammation environment to adjacent cells and tissues. In order to find inhibiting agents of SASP formation, 113 plant constituents were incubated with BJ fibroblasts for 6 days after treatment with bleomycin. Several plant constituents showed considerable inhibition of IL-6 production, a representative SASP marker. These plant constituents included anthraquinones such as aurantio-obtusin, flavonoids including astragalin, iristectorigenin A, iristectorigenin B, linarin, lignans including lariciresinol 9-O-glucoside and eleutheroside E, phenylpropanoids such as caffeic acid and methyl caffeate, steroid (ophiopogonin), and others like centauroside, rhoifolin and scoparone. In particular, methyl caffeate down-regulated SASP factors such as IL-1α, IL-1β, IL-6, IL-8, GM-CSF, CXCL1, MCP-2, and MMP-3. Inhibition of these SASP mRNA expression levels also coincided with the reduction of IκBζ expression and NF-κB p65 activation without affecting the expression levels of senescence markers, p21 or pRb. Taken together, the present study demonstrated that methyl caffeate might be a specific and strong inhibitor of SASP production without affecting the aging process. Its action mechanisms involve the reduction of IκBζ expression and NF-κB p65 activation. Therefore, this compound might be effective in alleviating chronic low-grade inflammation linked to age-related degenerative disorders.
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Affiliation(s)
- Hyun Lim
- College of Pharmacy, Kangwon National University, Chunchon, 200-701, Korea
| | - Byung Kyu Park
- College of Pharmacy, Kangwon National University, Chunchon, 200-701, Korea
| | - Sook Young Shin
- College of Pharmacy, Kangwon National University, Chunchon, 200-701, Korea
| | - Yong Soo Kwon
- College of Pharmacy, Kangwon National University, Chunchon, 200-701, Korea
| | - Hyun Pyo Kim
- College of Pharmacy, Kangwon National University, Chunchon, 200-701, Korea.
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21
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Global decrease in the expression of signalling pathways’ genes in murine uterus during preimplantation pregnancy. Reprod Biol 2017; 17:89-96. [DOI: 10.1016/j.repbio.2017.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/12/2016] [Accepted: 01/04/2017] [Indexed: 01/25/2023]
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22
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Taschner-Mandl S, Schwarz M, Blaha J, Kauer M, Kromp F, Frank N, Rifatbegovic F, Weiss T, Ladenstein R, Hohenegger M, Ambros IM, Ambros PF. Metronomic topotecan impedes tumor growth of MYCN-amplified neuroblastoma cells in vitro and in vivo by therapy induced senescence. Oncotarget 2016; 7:3571-86. [PMID: 26657295 PMCID: PMC4823128 DOI: 10.18632/oncotarget.6527] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 11/17/2015] [Indexed: 12/13/2022] Open
Abstract
Poor prognosis and frequent relapses are major challenges for patients with high-risk neuroblastoma (NB), especially when tumors show MYCN amplification. High-dose chemotherapy triggers apoptosis, necrosis and senescence, a cellular stress response leading to permanent proliferative arrest and a typical senescence-associated secretome (SASP). SASP components reinforce growth-arrest and act immune-stimulatory, while others are tumor-promoting. We evaluated whether metronomic, i.e. long-term, repetitive low-dose, drug treatment induces senescence in vitro and in vivo. And importantly, by using the secretome as a discriminator for beneficial versus adverse effects of senescence, drugs with a tumor-inhibiting SASP were identified. We demonstrate that metronomic application of chemotherapeutic drugs induces therapy-induced senescence, characterized by cell cycle arrest, p21WAF/CIP1 up-regulation and DNA double-strand breaks selectively in MYCN-amplified NB. Low-dose topotecan (TPT) was identified as an inducer of a favorable SASP while lacking NFKB1/p50 activation. In contrast, Bromo-deoxy-uridine induced senescent NB-cells secret a tumor-promoting SASP in a NFKB1/p50-dependent manner. Importantly, TPT-treated senescent tumor cells act growth-inhibitory in a dose-dependent manner on non-senescent tumor cells and MYCN expression is significantly reduced in vitro and in vivo. Furthermore, in a mouse xenotransplant-model for MYCN-amplified NB metronomic TPT leads to senescence selectively in tumor cells, complete or partial remission, prolonged survival and a favorable SASP. This new mode-of-action of metronomic TPT treatment, i.e. promoting a tumor-inhibiting type of senescence in MYCN-amplified tumors, is clinically relevant as metronomic regimens are increasingly implemented in therapy protocols of various cancer entities and are considered as a feasible maintenance treatment option with moderate adverse event profiles.
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Affiliation(s)
| | | | - Johanna Blaha
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | | | - Florian Kromp
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Nelli Frank
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | | | - Tamara Weiss
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Ruth Ladenstein
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria.,Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Martin Hohenegger
- Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Inge M Ambros
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Peter F Ambros
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria.,Department of Pediatrics, Medical University of Vienna, Vienna, Austria
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23
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Abstract
Cellular senescence is often considered a protection mechanism triggered by conditions that impose cellular stress. Continuous proliferation, DNA damaging agents or activated oncogenes are well-known activators of cell senescence. Apart from a characteristic stable cell cycle arrest, this response also involves a proinflammatory phenotype known as senescence-associated secretory phenotype (SASP). This, together with the widely known interference with senescence pathways by some oncoviruses, had led to the hypothesis that senescence may also be part of the host cell response to fight virus. Here, we evaluate this hypothesis using vesicular stomatitis virus (VSV) as a model. Our results show that VSV replication is significantly impaired in both primary and tumor senescent cells in comparison with non-senescent cells, and independently of the stimulus used to trigger senescence. Importantly, we also demonstrate a protective effect of senescence against VSV in vivo. Finally, our results identify the SASP as the major contributor to the antiviral defense exerted by cell senescence in vitro, and points to a role activating and recruiting the immune system to clear out the infection. Thus, our study indicates that cell senescence has also a role as a natural antiviral defense mechanism.
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SASP: Tumor Suppressor or Promoter? Yes! Trends Cancer 2016; 2:676-687. [PMID: 28741506 DOI: 10.1016/j.trecan.2016.10.001] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 09/27/2016] [Accepted: 10/04/2016] [Indexed: 01/07/2023]
Abstract
Cellular senescence is a permanent growth arrest in cells with damage or stress that could lead to transformation. Some tumor cells also undergo senescence in response to chemotherapy. Senescent cells secrete cytokines and other factors of the senescence-associated secretory phenotype (SASP) that contribute to tumor suppression by enforcing arrest and recruiting immune cells that remove these damaged or oncogene-expressing cells from organisms. However, some cells can develop a SASP comprising factors that are immunosuppressive and protumorigenic by paracrine mechanisms. Likewise, the SASP in treated cancers can either contribute to durable responses or drive relapse. Here, we discuss the studies that have demonstrated a complex and often conflicting role for the SASP in tumorigenesis and treatment response.
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Chalan P, van den Berg A, Kroesen BJ, Brouwer L, Boots A. Rheumatoid Arthritis, Immunosenescence and the Hallmarks of Aging. Curr Aging Sci 2016. [PMID: 26212057 PMCID: PMC5388800 DOI: 10.2174/1874609808666150727110744] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Age is the most important risk factor for the development of infectious diseases, cancer and chronic inflammatory diseases including rheumatoid arthritis (RA). The very act of living causes damage to cells. A network of molecular, cellular and physiological maintenance and repair systems creates a buffering capacity against these damages. Aging leads to progressive shrinkage of the buffering capacity and increases vulnerability. In order to better understand the complex mammalian aging processes, nine hallmarks of aging and their interrelatedness were recently put forward. RA is a chronic autoimmune disease affecting the joints. Although RA may develop at a young age, the incidence of RA increases with age. It has been suggested that RA may develop as a consequence of premature aging (immunosenescence) of the immune system. Alternatively, premature aging may be the consequence of the inflammatory state in RA. In an effort to answer this chicken and egg conundrum, we here outline and discuss the nine hallmarks of aging, their contribution to the pre-aged phenotype and the effects of treatment on the reversibility of immunosenescence in RA.
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Affiliation(s)
| | | | | | | | - Annemieke Boots
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, P.O Box 30.001, 9700 RB, Groningen, The Netherlands.
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Hörber S, Hildebrand DG, Lieb WS, Lorscheid S, Hailfinger S, Schulze-Osthoff K, Essmann F. The Atypical Inhibitor of NF-κB, IκBζ, Controls Macrophage Interleukin-10 Expression. J Biol Chem 2016; 291:12851-12861. [PMID: 27129283 DOI: 10.1074/jbc.m116.718825] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Indexed: 12/31/2022] Open
Abstract
Macrophages constitute a first line of pathogen defense by triggering a number of inflammatory responses and the secretion of various pro-inflammatory cytokines. Recently, we and others found that IκBζ, an atypical IκB family member and transcriptional coactivator of selected NF-κB target genes, is essential for macrophage expression of a subset of pro-inflammatory cytokines, such as IL-6, IL-12, and CCL2. Despite defective pro-inflammatory cytokine expression, however, IκBζ-deficient mice develop symptoms of chronic inflammation. To elucidate this discrepancy, we analyzed a regulatory role of IκBζ for the expression of anti-inflammatory cytokines and identified IκBζ as an essential activator of IL-10 expression. LPS-challenged peritoneal and bone marrow-derived macrophages from IκBζ-deficient mice revealed strongly decreased transcription and secretion of IL-10 compared with wild-type mice. Moreover, ectopic expression of IκBζ was sufficient to stimulate Il10 transcription. On the molecular level, IκBζ directly activated the Il10 promoter at a proximal κB site and was required for the transcription-enhancing trimethylation of histone 3 at lysine 4. Together, our findings show for the first time the IκBζ-dependent expression of an anti-inflammatory cytokine that is crucial in controlling immune responses.
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Affiliation(s)
- Sebastian Hörber
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and
| | - Dominic G Hildebrand
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and
| | - Wolfgang S Lieb
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and
| | - Sebastian Lorscheid
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and
| | - Stephan Hailfinger
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and
| | - Klaus Schulze-Osthoff
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and; the German Cancer Consortium (DKTK) and German Cancer Research Center, 69120 Heidelberg, Germany.
| | - Frank Essmann
- From the Interfaculty Institute of Biochemistry, Department of Molecular Medicine, University of Tübingen, 72076 Tübingen, Germany and.
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BRENNENSTUHL HEIKO, ARMENTO ANGELA, BRACZYSNKI ANNEKRISTIN, MITTELBRONN MICHEL, NAUMANN ULRIKE. IκBζ, an atypical member of the inhibitor of nuclear factor kappa B family, is induced by γ-irradiation in glioma cells, regulating cytokine secretion and associated with poor prognosis. Int J Oncol 2015; 47:1971-80. [DOI: 10.3892/ijo.2015.3159] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/03/2015] [Indexed: 11/06/2022] Open
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Lim H, Park H, Kim HP. Effects of flavonoids on senescence-associated secretory phenotype formation from bleomycin-induced senescence in BJ fibroblasts. Biochem Pharmacol 2015; 96:337-48. [PMID: 26093063 DOI: 10.1016/j.bcp.2015.06.013] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 06/11/2015] [Indexed: 12/31/2022]
Abstract
During senescence, cells express molecules called senescence-associated secretory phenotype (SASP), including growth factors, proinflammatory cytokines, chemokines, and proteases. The SASP induces a chronic low-grade inflammation adjacent to cells and tissues, leading to degenerative diseases. The anti-inflammatory activity of flavonoids was investigated on SASP expression in senescent fibroblasts. Effects of flavonoids on SASP expression such as IL-1α, IL-1β, IL-6, IL-8, GM-CSF, CXCL1, MCP-2 and MMP-3 and signaling molecules were examined in bleomycin-induced senescent BJ cells. In vivo activity of apigenin on SASP suppression was identified in the kidney of aged rats. Among the five naturally-occurring flavonoids initially tested, apigenin and kaempferol strongly inhibited the expression of SASP. These flavonoids inhibited NF-κB p65 activity via the IRAK1/IκBα signaling pathway and expression of IκBζ. Blocking IκBζ expression especially reduced the expression of SASP. A structure-activity relationship study using some synthetic flavones demonstrated that hydroxyl substitutions at C-2',3',4',5 and 7 were important in inhibiting SASP production. Finally, these results were verified by results showing that the oral administration of apigenin significantly reduced elevated levels of SASP and IκBζ mRNA in the kidneys of aged rats. This study is the first to show that certain flavonoids are inhibitors of SASP production, partially related to NF-κB p65 and IκBζ signaling pathway, and may effectively protect or alleviate chronic low-grade inflammation in degenerative diseases such as cardiovascular diseases and late-stage cancer.
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Affiliation(s)
- Hyun Lim
- College of Pharmacy, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Haeil Park
- College of Pharmacy, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Hyun Pyo Kim
- College of Pharmacy, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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29
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Effenberger T, Heyde J, Bartsch K, Garbers C, Schulze‐Osthoff K, Chalaris A, Murphy G, Rose‐John S, Rabe B. Senescence‐associated release of transmembrane proteins involves proteolytic processing by ADAM17 and microvesicle shedding. FASEB J 2014; 28:4847-56. [DOI: 10.1096/fj.14-254565] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Timo Effenberger
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Jan Heyde
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Kareen Bartsch
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Christoph Garbers
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Klaus Schulze‐Osthoff
- Interfaculty Institute for BiochemistryEberhard Karls UniversityTübingenGermany
- German Cancer Consortium (DKTK)HeidelbergGermany
- German Cancer Research CenterHeidelbergGermany
| | - Athena Chalaris
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Gillian Murphy
- Department of OncologyCancer Research UK Cambridge InstituteUniversity of CambridgeCambridgeUK
| | - Stefan Rose‐John
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Björn Rabe
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
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Toshima T, Shirabe K, Fukuhara T, Ikegami T, Yoshizumi T, Soejima Y, Ikeda T, Okano S, Maehara Y. Suppression of autophagy during liver regeneration impairs energy charge and hepatocyte senescence in mice. Hepatology 2014; 60:290-300. [PMID: 24668739 DOI: 10.1002/hep.27140] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 03/11/2014] [Accepted: 03/20/2014] [Indexed: 12/25/2022]
Abstract
UNLABELLED Autophagy is a homeostatic mechanism that regulates protein and organelle turnover and uses the amino acids from degraded proteins to produce adenosine 5'-triphosphate (ATP). We investigated the activity of autophagy-associated pathways in liver regeneration after partial hepatectomy (PHx) in liver-specific autophagy-related gene 5 (Atg5) knockout (KO) mice. Liver regeneration was severely impaired by 70% PHx, with a reduction in postoperative mitosis, but a compensating increase in hepatocyte size. PHx induced intracellular adenosine triphosphate and β-oxidation reduction as well as injured cellular mitochondria. Furthermore, PHx in Atg5 KO mice enhanced hepatic accumulation of p62 and ubiquitinated proteins. These results indicated that reorganization of intracellular proteins and organelles during autophagy was impaired in the regenerating liver of these mice. Up-regulation of p21 was associated with hepatocyte senescence, senescence-associated β-galactosidase expression, irreversible growth arrest, and secretion of senescence-associated molecules, including interleukin (IL)-6 and IL-8. CONCLUSION These findings indicate that autophagy plays a critical role in liver regeneration and in the preservation of cellular quality, preventing hepatocytes from becoming fully senescent and hypertrophic.
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Affiliation(s)
- Takeo Toshima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Garbers C, Kuck F, Aparicio-Siegmund S, Konzak K, Kessenbrock M, Sommerfeld A, Häussinger D, Lang PA, Brenner D, Mak TW, Rose-John S, Essmann F, Schulze-Osthoff K, Piekorz RP, Scheller J. Cellular senescence or EGFR signaling induces Interleukin 6 (IL-6) receptor expression controlled by mammalian target of rapamycin (mTOR). Cell Cycle 2013; 12:3421-32. [PMID: 24047696 DOI: 10.4161/cc.26431] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Interleukin 6 (IL-6) signaling plays a role in inflammation, cancer, and senescence. Here, we identified soluble IL-6 receptor (sIL-6R) as a member of the senescence-associated secretory phenotype (SASP). Senescence-associated sIL-6R upregulation was mediated by mammalian target of rapamycin (mTOR). sIL-6R was mainly generated by a disintegrin and metalloprotease 10 (ADAM10)-dependent ectodomain shedding to enable IL-6 trans-signaling. In vivo, heterozygous PTEN-knockout mice exhibited higher mTOR activity and increased sIL-6R levels. Moreover, aberrant EGF receptor (EGFR) activation triggered IL-6 synthesis. In analogy to senescence, EGFR-induced activation of mTOR also induced IL-6R expression and sIL-6R generation. Hence, mTOR activation reprograms IL-6 non-responder cells into IL-6 responder cells. Our data suggest that mTOR serves as a central molecular switch to facilitate cellular IL-6 classic and trans-signaling via IL-6R upregulation with direct implications for cellular senescence and tumor development.
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Affiliation(s)
- Christoph Garbers
- Institute of Biochemistry and Molecular Biology II; Medical Faculty; Heinrich-Heine-University; Düsseldorf, Germany
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