1
|
Wang J, Zhang M, Wang H. Emerging Landscape of Mesenchymal Stem Cell Senescence Mechanisms and Implications on Therapeutic Strategies. ACS Pharmacol Transl Sci 2024; 7:2306-2325. [PMID: 39144566 PMCID: PMC11320744 DOI: 10.1021/acsptsci.4c00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 08/16/2024]
Abstract
Mesenchymal stem cells (MSCs) hold significant promise for regenerative medicine and tissue engineering due to their unique multipotent differentiation ability and immunomodulatory properties. MSC therapy is widely discussed and utilized in clinical treatment. However, during both in vitro expansion and in vivo transplantation, MSCs are prone to senescence, an irreversible growth arrest characterized by morphological, gene expression, and functional changes in genomic regulation. The microenvironment surrounding MSCs plays a crucial role in modulating their senescence phenotype, influenced by factors such as hypoxia, inflammation, and aging status. Numerous strategies targeting MSC senescence have been developed, including senolytics and senomorphic agents, antioxidant and exosome therapies, mitochondrial transfer, and niche modulation. Novel approaches addressing replicative senescence have also emerged. This paper comprehensively reviews the current molecular manifestations of MSC senescence, addresses the environmental impact on senescence, and highlights potential therapeutic strategies to mitigate senescence in MSC-based therapies. These insights aim to enhance the efficacy and understanding of MSC therapies.
Collapse
Affiliation(s)
- Jing Wang
- Department
of Cellular and Molecular Medicine, University
of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Muqing Zhang
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland, 21215, United States
| | - Hu Wang
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland, 21215, United States
| |
Collapse
|
2
|
Kim K, Kim CE, Baek DJ, Park EY, Oh YS. Prevention of UVB-Induced Photoaging by an Ethyl Acetate Fraction from Allomyrina dichotoma Larvae and Its Potential Mechanisms in Human Dermal Fibroblasts. Int J Mol Sci 2024; 25:7850. [PMID: 39063091 PMCID: PMC11277254 DOI: 10.3390/ijms25147850] [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: 06/14/2024] [Revised: 07/13/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Allomyrina dichotoma larvae (ADL) is an insect type that is used ethnopharmacologically to treat various diseases; however, its use as an antiaging treatment has not been widely studied. Previously, we found that an ethyl acetate (EA) fraction derived from an ADL extract (ADLE) has a high polyphenol content and antioxidant properties. In this study, we identified the underlying molecular mechanism for the protective effect of the EA fraction against UVB-induced photodamage in vitro and ex vivo. UVB treatment increased intracellular reactive oxygen species levels and DNA damage; the latter of which was significantly decreased following cotreatment with the EA fraction. Biological markers of aging, such as p16INK4a, p21WAF1, and senescence-associated β-gal levels, were induced by UVB treatment but significantly suppressed following EA-fraction treatment. UVB-induced upregulation of matrix metalloproteinase (MMP)-1 and downregulation of COL1A1 were also reversed by EA-fraction treatment in both cells and a 3D skin model, which resulted in increased keratin and collagen deposition. Moreover, EA-fraction treatment inhibited the phosphorylation of MAPKs (p38, ERK, and JNK) and nuclear factor (NF-)-kB and decreased the levels of inflammatory cytokines in UVB-treated cells. The results indicate that an EA fraction from ADLE ameliorates UVB-induced degradation of COL1A1 by inhibiting MMP expression and inactivating the MAPK/NF-κB p65/AP-1 signaling pathway involved in this process.
Collapse
Affiliation(s)
- Kyong Kim
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
| | - Chae-Eun Kim
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
| | - Dong-Jae Baek
- College of Pharmacy, Mokpo National University, Mokpo 58554, Republic of Korea; (D.-J.B.); (E.-Y.P.)
| | - Eun-Young Park
- College of Pharmacy, Mokpo National University, Mokpo 58554, Republic of Korea; (D.-J.B.); (E.-Y.P.)
| | - Yoon Sin Oh
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
| |
Collapse
|
3
|
Kim HY, Kim HS. Podoplanin depletion in tonsil-derived mesenchymal stem cells induces cellular senescence via regulation of the p16 Ink4a/Rb pathway. Cell Commun Signal 2024; 22:323. [PMID: 38867259 PMCID: PMC11167904 DOI: 10.1186/s12964-024-01705-8] [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: 04/15/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are widely used in the development of therapeutic tools in regenerative medicine. However, their quality decreases during in vitro expansion because of heterogeneity and acquired cellular senescence. We investigated the potential role of podoplanin (PDPN) in minimizing cellular senescence and maintaining the stemness of tonsil-derived MSCs (TMSCs). METHODS TMSCs were isolated from human tonsil tissues using an enzymatic method, expanded, and divided into two groups: early-passaged TMSCs, which were cultured for 3-7 passages, and late-passaged TMSCs, which were passaged more than 15 times. The TMSCs were evaluated for cellular senescence and MSC characteristics, and PDPN-positive and -negative cells were identified by fluorescence-activated cell sorting. In addition, MSC features were assessed in siRNA-mediated PDPN-depleted TMSCs. RESULTS TMSCs, when passaged more than 15 times and becoming senescent, exhibited reduced proliferative rates, telomere length, pluripotency marker (NANOG, OCT4, and SOX2) expression, and tri-lineage differentiation potential (adipogenesis, chondrogenesis, or osteogenesis) compared to cells passaged less than five times. Furthermore, PDPN protein levels significantly decreased in a passage-dependent manner. PDPN-positive cells maintained their stemness characteristics, such as MSC-specific surface antigen (CD14, CD34, CD45, CD73, CD90, and CD105) and pluripotency marker expression, and exhibited higher tri-lineage differentiation potential than PDPN-negative cells. SiRNA-mediated silencing of PDPN led to decreased cell-cycle progression, proliferation, and migration, indicating the significance of PDPN as a preliminary senescence-related factor. These reductions directly contributed to the induction of cellular senescence via p16Ink4a/Rb pathway activation. CONCLUSION PDPN may serve as a novel biomarker to mitigate cellular senescence in the clinical application of MSCs.
Collapse
Affiliation(s)
- Ha Yeong Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Ewha Womans University, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Republic of Korea
| | - Han Su Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Ewha Womans University, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Republic of Korea.
| |
Collapse
|
4
|
Jiawen W, Jinfu W, Jianyong L, Yaoguang Z, Jianye W. Comprehensive landscape of the miRNA-regulated prognostic marker LAYN with immune infiltration and stemness in pan-cancer. J Cancer Res Clin Oncol 2023; 149:10989-11011. [PMID: 37335337 DOI: 10.1007/s00432-023-04986-7] [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: 04/18/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND COVID-19 has created a significant risk to worldwide public health. According to recent research, C-type lectins may be SARS-CoV-2 receptors. Layilin (LAYN), a broadly expressed integral membrane hyaluronan receptor with a C-type lectin structural domain, is a gene related to cell senescence. There are a few studies on C-type lectins in pan-cancer, and no pan-cancer analysis has been conducted for LAYN. METHODS The genotype tissue expression (GTEx) portal and the cancer genome map (TCGA) database were used to collect samples from healthy and cancer patients. Bioinformatics methods are used to construct immune landscape, mutation landscape, and stemness landscape of LAYN. The single-cell sequencing data were used from the CancerSEA website to analyze the functions of LAYN. The prognosis potential of LAYN was discussed based on machine learning. RESULTS LAYN is differentially expressed among cancers. Survival analysis indicated that LAYN was related to a poor overall survival (OS) rate in cancers, like HNSC, MESO, and OV. Mutational landscapes of LAYN in SKCM and STAD were constructed. LAYN was negatively related to Tumor Mutation Burden (TMB) in THCA, PRAD, and UCEC, and with the Microsatellite Instability (MSI) in STAD, LUAD, and UCEC. The immune landscape in pan-cancer suggested that LAYN may be involved in tumor immune escape. LAYN plays a crucial role in the infiltration of immune cells in malignant tumors. LAYN participates in methylation modifications and affects tumor proliferation and metastasis by regulating stemness. Analysis of single-cell sequencing data suggests that LAYN may participate in several biological processes, like stemness, apoptosis, and DNA repair. LAYN transcript was predicted as a liquid-liquid phase separation (LLPS)-related RNA. The results of KIRC were verified in the GEO and ArrayExpress databases. Furthermore, prognostic models based on machine learning of LAYN-related genes were established. Hsa-miR-153-5p and hsa-miR-505-3p may be the upstream miRNAs of LAYN and have a high value for tumor prognosis. CONCLUSION This study elucidated the functional mechanisms of LAYN from a pan-cancer perspective and provided novel insights into cancer prognosis, metastasis, and immunotherapy. LAYN has the potential to become a new target of mRNA vaccines and molecular therapies in tumors.
Collapse
Affiliation(s)
- Wang Jiawen
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Wang Jinfu
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Liu Jianyong
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhang Yaoguang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Wang Jianye
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
| |
Collapse
|
5
|
Dou W, Xie J, Chen J, Zhou J, Xu Z, Wang Z, Zhu Q. Overexpression of adrenomedullin (ADM) alleviates the senescence of human dental pulp stem cells by regulating the miR-152/CCNA2 pathway. Cell Cycle 2023; 22:565-579. [PMID: 36310381 PMCID: PMC9928452 DOI: 10.1080/15384101.2022.2135621] [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] [Indexed: 11/03/2022] Open
Abstract
The limitation of human dental pulp stem cells (DPSCs), which have potential application value in regenerative medicine, is that they are prone to age in vitro. Studies have shown adrenomedullin (ADM) is believed to promote the proliferation of human DPSCs, but whether it can also affect aging remains to be investigated. A lentivirus vector was used to construct human DPSCs overexpressing ADM. Senescence tests were carried out on cells of the 7th and 15th passage. Transcriptome analysis was conducted to analyze microRNA expression regulation changes after human DPSCs overexpressed ADM. H2O2 induced the aging model of human DPSCs, and we examined the mechanism of recovery of aging through transfection experiments with miR-152 mimic, pCDH-CCNA2, and CCNA2 siRNA. Overexpression of ADM significantly upregulated the G2/M phase ratio of human DPSCs in natural passage culture (P = 0.001) and inhibited the expression of p53 (P = 0.014), P21 WAF1 (P = 0.015), and P16 INK4A (P = 0.001). Decreased ROS accumulation was observed in human DPSCs during long-term natural passage (P = 0.022). Transcriptome analysis showed that miR-152 was significantly upregulated during human DPSC senescence (P = 0.001) and could induce cell senescence by directly targeting CCNA2. Transfection with miR-152 mimic significantly reversed the inhibitory effect of ADM overexpression on p53 (P = 0.006), P21 WAF1 (P = 0.012), and P16 INK4A (P = 0.01) proteins in human DPSCs (H2O2-induced). In contrast, pCDH-CCNA2 weakened the effect of the miR-152 mimic, thus promoting cell proliferation and antiaging. ADM-overexpressing human DPSCs promote cell cycle progression and resist cellular senescence through CCNA2 expression promotion by inhibiting miR-152.
Collapse
Affiliation(s)
- Wenxue Dou
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China
| | - Jiaye Xie
- Department of Stomatology, Tongren Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jianan Chen
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China
| | - Jiajun Zhou
- Department of Stomatology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
| | - Zunyue Xu
- Department of Stomatology, Shanghai Songjiang District Central Hospital, Shanghai, China
| | - Zheng Wang
- Department of Stomatology, Tongren Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qiang Zhu
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China,CONTACT Qiang Zhu Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai200433, China
| |
Collapse
|
6
|
Hartmann C, Herling L, Hartmann A, Köckritz V, Fuellen G, Walter M, Hermann A. Systematic estimation of biological age of in vitro cell culture systems by an age-associated marker panel. FRONTIERS IN AGING 2023; 4:1129107. [PMID: 36873743 PMCID: PMC9975507 DOI: 10.3389/fragi.2023.1129107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/02/2023] [Indexed: 02/17/2023]
Abstract
Aging is a process that affects almost all multicellular organisms and since our population ages with increasing prevalence of age-related diseases, it is important to study basic processes involved in aging. Many studies have been published so far using different and often single age markers to estimate the biological age of organisms or different cell culture systems. However, comparability of studies is often hampered by the lack of a uniform panel of age markers. Consequently, we here suggest an easy-to-use biomarker-based panel of classical age markers to estimate the biological age of cell culture systems that can be used in standard cell culture laboratories. This panel is shown to be sensitive in a variety of aging conditions. We used primary human skin fibroblasts of different donor ages and additionally induced either replicative senescence or artificial aging by progerin overexpression. Using this panel, highest biological age was found for artificial aging by progerin overexpression. Our data display that aging varies depending on cell line and aging model and even from individual to individual showing the need for comprehensive analyses.
Collapse
Affiliation(s)
- Christiane Hartmann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, Rostock, Germany
| | - Luise Herling
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, Rostock, Germany
| | - Alexander Hartmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Rostock, Rostock, Germany
| | - Verena Köckritz
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, Rostock, Germany
| | - Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, Rostock, Germany
| | - Michael Walter
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, Rostock, Germany
| |
Collapse
|
7
|
Wahlmueller M, Narzt MS, Missfeldt K, Arminger V, Krasensky A, Lämmermann I, Schaedl B, Mairhofer M, Suessner S, Wolbank S, Priglinger E. Establishment of In Vitro Models by Stress-Induced Premature Senescence for Characterizing the Stromal Vascular Niche in Human Adipose Tissue. Life (Basel) 2022; 12:life12101459. [PMID: 36294893 PMCID: PMC9605485 DOI: 10.3390/life12101459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 09/14/2022] [Indexed: 12/02/2022] Open
Abstract
Acting as the largest energy reservoir in the body, adipose tissue is involved in longevity and progression of age-related metabolic dysfunction. Here, cellular senescence plays a central role in the generation of a pro-inflammatory environment and in the evolution of chronic diseases. Within the complexity of a tissue, identification and targeting of senescent cells is hampered by their heterogeneity. In this study, we generated stress-induced premature senescence 2D and 3D in vitro models for the stromal vascular niche of human adipose tissue. We established treatment conditions for senescence induction using Doxorubicin (Dox), starting from adipose-derived stromal/stem cells (ASCs), which we adapted to freshly isolated microtissue-stromal vascular fraction (MT-SVF), where cells are embedded within their native extracellular matrix. Senescence hallmarks for the established in vitro models were verified on different cellular levels, including morphology, cell cycle arrest, senescence-associated β-galactosidase activity (SA-βgal) and gene expression. Two subsequent exposures with 200 nM Dox for six days were suitable to induce senescence in our in vitro models. We demonstrated induction of senescence in the 2D in vitro models through SA-βgal activity, at the mRNA level (LMNB1, CDK1, p21) and additionally by G2/M phase cell cycle arrest in ASCs. Significant differences in Lamin B1 and p21 protein expression confirmed senescence in our MT-SVF 3D model. MT-SVF 3D cultures were composed of multiple cell types, including CD31, CD34 and CD68 positive cells, while cell death remained unaltered upon senescence induction. As heterogeneity and complexity of adipose tissue senescence is given by multiple cell types, our established senescence models that represent the perivascular niche embedded within its native extracellular matrix are highly relevant for future clinical studies.
Collapse
Affiliation(s)
- Marlene Wahlmueller
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- MorphoMed GmbH, 1030 Vienna, Austria
| | - Marie-Sophie Narzt
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- MorphoMed GmbH, 1030 Vienna, Austria
| | - Karin Missfeldt
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Verena Arminger
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Anna Krasensky
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Ingo Lämmermann
- Christian Doppler Laboratory for the Biotechnology of Skin Aging, Department of Biotechnology, Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
- Rockfish Bio AG, 1010 Vienna, Austria
| | - Barbara Schaedl
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
| | - Mario Mairhofer
- Department of Hematology and Internal Oncology, Johannes Kepler University, 4020 Linz, Austria
| | - Susanne Suessner
- Austrian Red Cross Blood Transfusion Service for Upper Austria, 4020 Linz, Austria
| | - Susanne Wolbank
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Eleni Priglinger
- Ludwig Boltzmann Institute for Traumatology in Cooperation with the AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- MorphoMed GmbH, 1030 Vienna, Austria
- Correspondence:
| |
Collapse
|
8
|
Rad54L promotes bladder cancer progression by regulating cell cycle and cell senescence. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:185. [PMID: 36071250 DOI: 10.1007/s12032-022-01751-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/13/2022] [Indexed: 10/14/2022]
Abstract
Bladder cancer (BCa) is the most prevalent cancer of the urinary system, but its pathogenesis is still poorly understood. Several reports have suggested that gene damage repair is highly correlated with tumor development and drug resistance, in which homologous recombination repair gene Rad54L seems to play an important role, through yet unclear mechanisms. Therefore, this study stratified cancer patients by Rad54L expression in BCa tissue, and high Rad54L expression was associated with a poor prognosis. Mechanistically, we demonstrate that high Rad54L expression promotes abnormal bladder tumor cell proliferation by changing the cell cycle and cell senescence. In addition, this study also suggests that Rad54L may be associated with p53, p21, and pRB in BCa tissue. In summary, this study exposes Rad54L as potential a prognostic biomarker and precision treatment target in BCa.
Collapse
|
9
|
Ke J, Wang Q, Zhang W, Ni S, Mei H. LncRNA MIR4435-2HG promotes proliferation, migration, invasion and epithelial mesenchymal transition via targeting miR-22-3p/TMEM9B in breast cancer. Am J Transl Res 2022; 14:5441-5454. [PMID: 36105009 PMCID: PMC9452358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Breast cancer, as a malignancy with the highest incidence and mortality in women, seriously threatens women's life and health. Pieces of evidence have suggested that long non-coding RNAs (lncRNAs) possess important roles in regulating the occurrence and development of breast cancer. METHODS RT-qPCR was used to explore the expression levels of MIR4435-2HG, miR-22-3p and TMEM9B in breast cancer tissues and cell lines. Cell viability, proliferation, migration and invasion were assessed by CCK-8 assay, Colony formation assay, Wound healing assay and Transwell assay, respectively. The effect of MIR4435-2HG on EMT progress was explored by Immunofluorescence assay and Western blot. RNA pull-down analysis and Dual-luciferase reporter assay were performed to validate the interaction between MIR4435-2HG and miR-22-3p, as well as miR-22-3p and TMEM9B. RESULTS MIR4435-2HG was notably up-regulated in breast cancer tissues and cell lines. Additionally, down-regulation of MIR4435-2HG restrained the viability, proliferation, migration, invasion and EMT of breast cancer cells. MiR-22-3p expression was down-regulated in breast cancer tissues and cell lines, and negatively associated with MIR4435-2HG expression. Over-expression of miR-22-3p obviously inhibited the viability, proliferation, migration, invasion and EMT of breast cancer cell lines. Furthermore, TMEM9B was up-regulated in breast cancer tissues and cell lines and negatively associated with miR-22-3p expression. TMEM9B inhibition partially restored the effects of MIR4435-2HG/miR-22-3p on the viability, proliferation, migration, invasion and EMT of breast cancer cell lines. CONCLUSION MIR4435-2HG plays a potential tumor-promoting role in the occurrence and development of breast cancer, possibly by regulating the miR-22-3p/TMEM9B axis.
Collapse
Affiliation(s)
- Jing Ke
- Department of General Surgery, Affiliated Hospital of Nantong UniversityNantong 226001, Jiangsu Province, China
| | - Quhui Wang
- Department of General Surgery, Affiliated Hospital of Nantong UniversityNantong 226001, Jiangsu Province, China
| | - Wei Zhang
- Department of General Surgery, Affiliated Hospital of Nantong UniversityNantong 226001, Jiangsu Province, China
| | - Sujie Ni
- Department of Medical Oncology, Affiliated Hospital of Nantong UniversityNantong 226001, Jiangsu Province, China
| | - Haijun Mei
- Department of General Surgery, Affiliated Hospital of Nantong UniversityNantong 226001, Jiangsu Province, China
| |
Collapse
|
10
|
Du Y, Zeng X, Yu W, Xie W. A transmembrane protein family gene signature for overall survival prediction in osteosarcoma. Front Genet 2022; 13:937300. [PMID: 35991561 PMCID: PMC9388755 DOI: 10.3389/fgene.2022.937300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
The transmembrane (TMEM) protein family is constituted by a large number of proteins that span the lipid bilayer. Dysregulation of TMEM protein genes widely occurs and is associated with clinical outcomes of patients with multiple tumors. Nonetheless, the significance of TMEM genes in the prognosis prediction of patients with osteosarcoma remains largely unclear. Here, we comprehensively analyzed TMEM protein family genes in osteosarcoma using public resources and bioinformatics methods. Prognosis-related TMEM protein family genes were identified by the univariate Cox regression analysis and were utilized to construct a signature based on six TMEM protein family genes (TMEM120B, TMEM147, TMEM9B, TMEM8A, TMEM59, and TMEM39B) in osteosarcoma. The prognostic signature stratified patients into high- and low-risk groups, and validation in the internal and external cohorts confirmed the risk stratification ability of the signature. Functional enrichment analyses of differentially expressed genes between high- and low-risk groups connected immunity with the prognostic signature. Moreover, we found that M2 and M0 macrophages were the most abundant infiltrated immune cell types in the immune microenvironment, and samples of the high-risk group showed a decreased proportion of M2 macrophages. Single-sample gene set enrichment analysis revealed that the scores of neutrophils and Treg were markedly lower in the high-risk group than these in the low-risk group in The Cancer Genome Atlas and GSE16091 cohorts. As for the related immune functions, APC co-inhibition and cytolytic activity exhibited fewer active levels in the high-risk group than that in the low-risk group in both cohorts. Of the six TMEM genes, the expression of TMEM9B was lower in the high-risk group than in the low-risk group and was positively associated with the overall survival of osteosarcoma patients. In conclusion, our TMEM protein family gene-based signature is a novel and clinically useful prognostic biomarker for osteosarcoma patients, and TMEM9B might be a potential therapeutic target in osteosarcoma.
Collapse
|
11
|
Barfield R, Huyghe JR, Lemire M, Dong X, Su YR, Brezina S, Buchanan DD, Figueiredo JC, Gallinger S, Giannakis M, Gsur A, Gunter MJ, Hampel H, Harrison TA, Hopper JL, Hudson TJ, Li CI, Moreno V, Newcomb PA, Pai RK, Pharoah PDP, Phipps AI, Qu C, Steinfelder RS, Sun W, Win AK, Zaidi SH, Campbell PT, Peters U, Hsu L. Genetic Regulation of DNA Methylation Yields Novel Discoveries in GWAS of Colorectal Cancer. Cancer Epidemiol Biomarkers Prev 2022; 31:1068-1076. [PMID: 35247911 PMCID: PMC9081265 DOI: 10.1158/1055-9965.epi-21-0724] [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: 06/15/2021] [Revised: 10/05/2021] [Accepted: 02/23/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Colorectal cancer has a strong epigenetic component that is accompanied by frequent DNA methylation (DNAm) alterations in addition to heritable genetic risk. It is of interest to understand the interrelationship of germline genetics, DNAm, and colorectal cancer risk. METHODS We performed a genome-wide methylation quantitative trait locus (meQTL) analysis in 1,355 people, assessing the pairwise associations between genetic variants and lymphocytes methylation data. In addition, we used penalized regression with cis-genetic variants ± 1 Mb of methylation to identify genome-wide heritable DNAm. We evaluated the association of genetically predicted methylation with colorectal cancer risk based on genome-wide association studies (GWAS) of over 125,000 cases and controls using the multivariate sMiST as well as univariately via examination of marginal association with colorectal cancer risk. RESULTS Of the 142 known colorectal cancer GWAS loci, 47 were identified as meQTLs. We identified four novel colorectal cancer-associated loci (NID2, ATXN10, KLHDC10, and CEP41) that reside over 1 Mb outside of known colorectal cancer loci and 10 secondary signals within 1 Mb of known loci. CONCLUSIONS Leveraging information of DNAm regulation into genetic association of colorectal cancer risk reveals novel pathways in colorectal cancer tumorigenesis. Our summary statistics-based framework sMiST provides a powerful approach by combining information from the effect through methylation and residual direct effects of the meQTLs on disease risk. Further validation and functional follow-up of these novel pathways are needed. IMPACT Using genotype, DNAm, and GWAS, we identified four new colorectal cancer risk loci. We studied the landscape of genetic regulation of DNAm via single-SNP and multi-SNP meQTL analyses.
Collapse
Affiliation(s)
- Richard Barfield
- Department of Biostatistics and Bioinformatics, Duke University, Durham NC USA
| | - Jeroen R Huyghe
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Mathieu Lemire
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON, Canada
| | - Xinyuan Dong
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Yu-Ru Su
- Biostatistics Unit, Kaiser Permanente Washington Health Research Institute, Seattle, Washington
| | - Stefanie Brezina
- Institute of Cancer Research, Department of Medicine I, Medical University Vienna, Vienna, Austria
| | - Daniel D Buchanan
- Colorectal Oncogenomics Group, Department of Clinical Pathology, The University of Melbourne, Parkville, Victoria 3010 Australia
- University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, Victoria 3010 Australia
- Genomic Medicine and Family Cancer Clinic, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Jane C Figueiredo
- Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Steven Gallinger
- Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Marios Giannakis
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
- The Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Andrea Gsur
- Institute of Cancer Research, Department of Medicine I, Medical University Vienna, Vienna, Austria
| | - Marc J Gunter
- International Agency for Research on Cancer (IARC/WHO), Nutrition and Metabolism Branch, Lyon, France
| | - Heather Hampel
- Division of Human Genetics, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Tabitha A Harrison
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Epidemiology, School of Public Health and Institute of Health and Environment, Seoul National University, Seoul, South Korea
| | - Thomas J Hudson
- Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Christopher I Li
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Victor Moreno
- Oncology Data Analytics Program, Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain
- ONCOBEL Program, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain
| | - Polly A Newcomb
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- School of Public Health, University of Washington, Seattle, Washington, USA
| | - Rish K Pai
- Department of Laboratory Medicine and Pathology, Mayo Clinic Arizona, Scottsdale, Arizona, USA
| | - Paul D P Pharoah
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Amanda I Phipps
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Conghui Qu
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Robert S Steinfelder
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Wei Sun
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
- Department of Biostatistics, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Aung Ko Win
- Department of Epidemiology, School of Public Health and Institute of Health and Environment, Seoul National University, Seoul, South Korea
| | - Syed H Zaidi
- Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Peter T Campbell
- Department of Population Science, American Cancer Society, Atlanta, Georgia, USA
| | - Ulrike Peters
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Li Hsu
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| |
Collapse
|
12
|
p27, The Cell Cycle and Alzheimer´s Disease. Int J Mol Sci 2022; 23:ijms23031211. [PMID: 35163135 PMCID: PMC8835212 DOI: 10.3390/ijms23031211] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 12/29/2022] Open
Abstract
The cell cycle consists of successive events that lead to the generation of new cells. The cell cycle is regulated by different cyclins, cyclin-dependent kinases (CDKs) and their inhibitors, such as p27Kip1. At the nuclear level, p27Kip1 has the ability to control the evolution of different phases of the cell cycle and oppose cell cycle progression by binding to CDKs. In the cytoplasm, diverse functions have been described for p27Kip1, including microtubule remodeling, axonal transport and phagocytosis. In Alzheimer’s disease (AD), alterations to cycle events and a purported increase in neurogenesis have been described in the early disease process before significant pathological changes could be detected. However, most neurons cannot progress to complete their cell division and undergo apoptotic cell death. Increased levels of both the p27Kip1 levels and phosphorylation status have been described in AD. Increased levels of Aβ42, tau hyperphosphorylation or even altered insulin signals could lead to alterations in p27Kip1 post-transcriptional modifications, causing a disbalance between the levels and functions of p27Kip1 in the cytoplasm and nucleus, thus inducing an aberrant cell cycle re-entry and alteration of extra cell cycle functions. Further studies are needed to completely understand the role of p27Kip1 in AD and the therapeutic opportunities associated with the modulation of this target.
Collapse
|
13
|
Wen J, Wang Y, Yuan M, Huang Z, Zou Q, Pu Y, Zhao B, Cai Z. Role of mismatch repair in aging. Int J Biol Sci 2021; 17:3923-3935. [PMID: 34671209 PMCID: PMC8495402 DOI: 10.7150/ijbs.64953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/07/2021] [Indexed: 01/10/2023] Open
Abstract
A common feature of aging is the accumulation of genetic damage throughout life. DNA damage can lead to genomic instability. Many diseases associated with premature aging are a result of increased accumulation of DNA damage. In order to minimize these damages, organisms have evolved a complex network of DNA repair mechanisms, including mismatch repair (MMR). In this review, we detail the effects of MMR on genomic instability and its role in aging emphasizing on the association between MMR and the other hallmarks of aging, serving to drive or amplify these mechanisms. These hallmarks include telomere attrition, epigenetic alterations, mitochondrial dysfunction, altered nutrient sensing and cell senescence. The close relationship between MMR and these markers may provide prevention and treatment strategies, to reduce the incidence of age-related diseases and promote the healthy aging of human beings.
Collapse
Affiliation(s)
- Jie Wen
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China.,Department and Institute of Neurology, Guangdong Medical University, Guangdong, 524001, China.,Guangdong Key Laboratory of aging related cardio cerebral diseases, Guangdong, 524001, China
| | - Yangyang Wang
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| | - Minghao Yuan
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| | - Zhenting Huang
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| | - Qian Zou
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| | - Yinshuang Pu
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| | - Bin Zhao
- Department and Institute of Neurology, Guangdong Medical University, Guangdong, 524001, China.,Guangdong Key Laboratory of aging related cardio cerebral diseases, Guangdong, 524001, China
| | - Zhiyou Cai
- Chongqing Key Laboratory of Neurodegenerative Diseases, Chongqing, 400013, China.,Department of Neurology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013, China
| |
Collapse
|
14
|
Koutsaliaris IK, Moschonas IC, Pechlivani LM, Tsouka AN, Tselepis AD. Inflammation, Oxidative Stress, Vascular Aging And Atherosclerotic Ischemic Stroke. Curr Med Chem 2021; 29:5496-5509. [PMID: 34547993 DOI: 10.2174/0929867328666210921161711] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 11/22/2022]
Abstract
Vascular aging is a crucial risk factor for atherosclerotic ischemic stroke. Vascular aging is characterized by oxidative stress, endothelial dysfunction, inflammation, intimal and media thickening, as well as the gradual development of arterial stiffness, among other pathophysiological features. Regarding oxidative stress, increased concentration of reactive oxygen and nitrogen species is linked to atherosclerotic ischemic stroke in vascular aging. Additionally, oxidative stress is associated with an inflammatory response. Inflammation is related to aging through the "inflammaging" theory, which is characterized by decreased ability to cope with a variety of stressors, in combination with an increased pro-inflammatory state. Vascular aging is correlated with changes in cerebral arteries that are considered predictors of the risk for atherosclerotic ischemic stroke. The aim of the present review is to present the role of oxidative stress and inflammation in vascular aging, as well as their involvement in atherosclerotic ischemic stroke.
Collapse
Affiliation(s)
- Ioannis K Koutsaliaris
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Iraklis C Moschonas
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Louisa M Pechlivani
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Aikaterini N Tsouka
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Alexandros D Tselepis
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| |
Collapse
|
15
|
Kumari R, Jat P. Mechanisms of Cellular Senescence: Cell Cycle Arrest and Senescence Associated Secretory Phenotype. Front Cell Dev Biol 2021; 9:645593. [PMID: 33855023 PMCID: PMC8039141 DOI: 10.3389/fcell.2021.645593] [Citation(s) in RCA: 672] [Impact Index Per Article: 224.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/16/2021] [Indexed: 01/10/2023] Open
Abstract
Cellular senescence is a stable cell cycle arrest that can be triggered in normal cells in response to various intrinsic and extrinsic stimuli, as well as developmental signals. Senescence is considered to be a highly dynamic, multi-step process, during which the properties of senescent cells continuously evolve and diversify in a context dependent manner. It is associated with multiple cellular and molecular changes and distinct phenotypic alterations, including a stable proliferation arrest unresponsive to mitogenic stimuli. Senescent cells remain viable, have alterations in metabolic activity and undergo dramatic changes in gene expression and develop a complex senescence-associated secretory phenotype. Cellular senescence can compromise tissue repair and regeneration, thereby contributing toward aging. Removal of senescent cells can attenuate age-related tissue dysfunction and extend health span. Senescence can also act as a potent anti-tumor mechanism, by preventing proliferation of potentially cancerous cells. It is a cellular program which acts as a double-edged sword, with both beneficial and detrimental effects on the health of the organism, and considered to be an example of evolutionary antagonistic pleiotropy. Activation of the p53/p21WAF1/CIP1 and p16INK4A/pRB tumor suppressor pathways play a central role in regulating senescence. Several other pathways have recently been implicated in mediating senescence and the senescent phenotype. Herein we review the molecular mechanisms that underlie cellular senescence and the senescence associated growth arrest with a particular focus on why cells stop dividing, the stability of the growth arrest, the hypersecretory phenotype and how the different pathways are all integrated.
Collapse
Affiliation(s)
- Ruchi Kumari
- MRC Prion Unit at UCL, UCL Institute of Prion Diseases, London, United Kingdom
| | - Parmjit Jat
- MRC Prion Unit at UCL, UCL Institute of Prion Diseases, London, United Kingdom
| |
Collapse
|
16
|
Liu X, Wei L, Dong Q, Liu L, Zhang MQ, Xie Z, Wang X. A large-scale CRISPR screen and identification of essential genes in cellular senescence bypass. Aging (Albany NY) 2020; 11:4011-4031. [PMID: 31219803 PMCID: PMC6628988 DOI: 10.18632/aging.102034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 06/13/2019] [Indexed: 12/24/2022]
Abstract
Cellular senescence is an important mechanism of autonomous tumor suppression, while its consequence such as the senescence-associated secretory phenotype (SASP) may drive tumorigenesis and age-related diseases. Therefore, controlling the cell fate optimally when encountering senescence stress is helpful for anti-cancer or anti-aging treatments. To identify genes essential for senescence establishment or maintenance, we carried out a CRISPR-based screen with a deliberately designed single-guide RNA (sgRNA) library. The library comprised of about 12,000 kinds of sgRNAs targeting 1378 senescence-associated genes selected by integrating the information of literature mining, protein-protein interaction network, and differential gene expression. We successfully detected a dozen gene deficiencies potentially causing senescence bypass, and their phenotypes were further validated with a high true positive rate. RNA-seq analysis showed distinct transcriptome patterns of these bypass cells. Interestingly, in the bypass cells, the expression of SASP genes was maintained or elevated with CHEK2, HAS1, or MDK deficiency; but neutralized with MTOR, CRISPLD2, or MORF4L1 deficiency. Pathways of some age-related neurodegenerative disorders were also downregulated with MTOR, CRISPLD2, or MORF4L1 deficiency. The results demonstrated that disturbing these genes could lead to distinct cell fates as a consequence of senescence bypass, suggesting that they may play essential roles in cellular senescence.
Collapse
Affiliation(s)
- Xuehui Liu
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China.,Present address: State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Lei Wei
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China
| | - Qiongye Dong
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China.,Present address: Key Laboratory of Intelligent Information Processing, Advanced Computer Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China
| | - Liyang Liu
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China
| | - Michael Q Zhang
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China.,Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China.,Department of Biological Sciences, Center for Systems Biology, The University of Texas, Richardson, TX 75080, USA
| | - Zhen Xie
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China
| | - Xiaowo Wang
- MOE Key Laboratory of Bioinformatics; Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China
| |
Collapse
|
17
|
Shi Y, Cai EL, Yang C, Ye CY, Zeng P, Wang XM, Fang YY, Cheng ZK, Wang Q, Cao FY, Zhou XW, Tian Q. Protection of melatonin against acidosis-induced neuronal injuries. J Cell Mol Med 2020; 24:6928-6942. [PMID: 32364678 PMCID: PMC7299701 DOI: 10.1111/jcmm.15351] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 01/13/2020] [Accepted: 04/12/2020] [Indexed: 12/23/2022] Open
Abstract
Acidosis, a common feature of cerebral ischaemia and hypoxia, plays a key role in these pathological processes by aggravating the ischaemic and hypoxic injuries. To explore the mechanisms, in this research, we cultured primary neurons in an acidic environment (potential of hydrogen [pH]6.2, 24 hours) to mimic the acidosis. By proteomic analysis, 69 differentially expressed proteins in the acidic neurons were found, mainly related to stress and cell death, synaptic plasticity and gene transcription. And, the acidotic neurons developed obvious alterations including increased neuronal death, reduced dendritic length and complexity, reduced synaptic proteins, tau hyperphosphorylation, endoplasmic reticulum (ER) stress activation, abnormal lysosome‐related signals, imbalanced oxidative stress/anti‐oxidative stress and decreased Golgi matrix proteins. Then, melatonin (1 × 10−4 mol/L) was used to pre‐treat the cultured primary neurons before acidic treatment (pH6.2). The results showed that melatonin partially reversed the acidosis‐induced neuronal death, abnormal dendritic complexity, reductions of synaptic proteins, tau hyperphosphorylation and imbalance of kinase/phosphatase. In addition, acidosis related the activations of glycogen synthase kinase‐3β and nuclear factor‐κB signals, ER stress and Golgi stress, and the abnormal autophagy‐lysosome signals were completely reversed by melatonin. These data indicate that melatonin is beneficial for neurons against acidosis‐induced injuries.
Collapse
Affiliation(s)
- Yan Shi
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China.,School of Medicine, Hunan Normal University, Changsha, China
| | - Er-Li Cai
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Can Yang
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China.,Department of Emergency Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Chao-Yuan Ye
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Zeng
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Ming Wang
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Ying-Yan Fang
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi-Kang Cheng
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Qun Wang
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Fu-Yuan Cao
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Xin-Wen Zhou
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Tian
- Department of Pathology and Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Neurological Disease of National Education Ministry, Institute for Brain Research, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
18
|
Banerjee S, Tian T, Wei Z, Peck KN, Shih N, Chalian AA, O'Malley BW, Weinstein GS, Feldman MD, Alwine J, Robertson ES. Microbial Signatures Associated with Oropharyngeal and Oral Squamous Cell Carcinomas. Sci Rep 2017; 7:4036. [PMID: 28642609 PMCID: PMC5481414 DOI: 10.1038/s41598-017-03466-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 04/26/2017] [Indexed: 12/18/2022] Open
Abstract
The microbiome is fundamentally one of the most unique organs in the human body. Dysbiosis can result in critical inflammatory responses and result in pathogenesis contributing to neoplastic events. We used a pan-pathogen array technology (PathoChip) coupled with next-generation sequencing to establish microbial signatures unique to human oral and oropharyngeal squamous cell carcinomas (OCSCC/OPSCC). Signatures for DNA and RNA viruses including oncogenic viruses, gram positive and negative bacteria, fungi and parasites were detected. Cluster and topological analyses identified 2 distinct groups of microbial signatures related to OCSCCs/OPSCCs. Results were validated by probe capture next generation sequencing; the data from which also provided a comprehensive map of integration sites and chromosomal hotspots for micro-organism genomic insertions. Identification of these microbial signatures and their integration sites may provide biomarkers for OCSCC/OPSCC diagnosis and prognosis as well as novel avenues for study of their potential role in OCSCCs/OPSCCs.
Collapse
Affiliation(s)
- Sagarika Banerjee
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Tian Tian
- Department of Computer Science, New Jersey Institute of Technology, New Jersey, 07102, United States of America
| | - Zhi Wei
- Department of Computer Science, New Jersey Institute of Technology, New Jersey, 07102, United States of America
| | - Kristen N Peck
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Natalie Shih
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, 19104, Philadelphia, Pennsylvania, United States of America
| | - Ara A Chalian
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Bert W O'Malley
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Gregory S Weinstein
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Michael D Feldman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, 19104, Philadelphia, Pennsylvania, United States of America
| | - James Alwine
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Erle S Robertson
- Department of Otorhinolaryngology-Head and neck surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America.
| |
Collapse
|
19
|
Bilsland AE, Pugliese A, Liu Y, Revie J, Burns S, McCormick C, Cairney CJ, Bower J, Drysdale M, Narita M, Sadaie M, Keith WN. Identification of a Selective G1-Phase Benzimidazolone Inhibitor by a Senescence-Targeted Virtual Screen Using Artificial Neural Networks. Neoplasia 2015; 17:704-715. [PMID: 26476078 PMCID: PMC4611071 DOI: 10.1016/j.neo.2015.08.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/28/2015] [Accepted: 08/31/2015] [Indexed: 12/29/2022]
Abstract
Cellular senescence is a barrier to tumorigenesis in normal cells, and tumor cells undergo senescence responses to genotoxic stimuli, which is a potential target phenotype for cancer therapy. However, in this setting, mixed-mode responses are common with apoptosis the dominant effect. Hence, more selective senescence inducers are required. Here we report a machine learning-based in silico screen to identify potential senescence agonists. We built profiles of differentially affected biological process networks from expression data obtained under induced telomere dysfunction conditions in colorectal cancer cells and matched these to a panel of 17 protein targets with confirmatory screening data in PubChem. We trained a neural network using 3517 compounds identified as active or inactive against these targets. The resulting classification model was used to screen a virtual library of ~2M lead-like compounds. One hundred and forty-seven virtual hits were acquired for validation in growth inhibition and senescence-associated β-galactosidase assays. Among the found hits, a benzimidazolone compound, CB-20903630, had low micromolar IC50 for growth inhibition of HCT116 cells and selectively induced senescence-associated β-galactosidase activity in the entire treated cell population without cytotoxicity or apoptosis induction. Growth suppression was mediated by G1 blockade involving increased p21 expression and suppressed cyclin B1, CDK1, and CDC25C. In addition, the compound inhibited growth of multicellular spheroids and caused severe retardation of population kinetics in long-term treatments. Preliminary structure-activity and structure clustering analyses are reported, and expression analysis of CB-20903630 against other cell cycle suppressor compounds suggested a PI3K/AKT-inhibitor-like profile in normal cells, with different pathways affected in cancer cells.
Collapse
Affiliation(s)
- Alan E Bilsland
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - Angelo Pugliese
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Yu Liu
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - John Revie
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - Sharon Burns
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - Carol McCormick
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - Claire J Cairney
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK
| | - Justin Bower
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Martin Drysdale
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Masashi Narita
- University of Cambridge, Cancer Research UK Cambridge Institute, Li Ka Shing Centre Robinson Way, Cambridge, CB2 0RE, UK
| | - Mahito Sadaie
- Kyoto University, Graduate School of Biostudies, Yoshidakonoe-cho, Sakyo-ku Kyoto 606-8501 Japan
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK.
| |
Collapse
|
20
|
Sadaie M, Dillon C, Narita M, Young ARJ, Cairney CJ, Godwin LS, Torrance CJ, Bennett DC, Keith WN, Narita M. Cell-based screen for altered nuclear phenotypes reveals senescence progression in polyploid cells after Aurora kinase B inhibition. Mol Biol Cell 2015; 26:2971-85. [PMID: 26133385 PMCID: PMC4551313 DOI: 10.1091/mbc.e15-01-0003] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 05/22/2015] [Accepted: 06/23/2015] [Indexed: 12/23/2022] Open
Abstract
Cellular senescence is a widespread stress response and is widely considered to be an alternative cancer therapeutic goal. Unlike apoptosis, senescence is composed of a diverse set of subphenotypes, depending on which of its associated effector programs are engaged. Here we establish a simple and sensitive cell-based prosenescence screen with detailed validation assays. We characterize the screen using a focused tool compound kinase inhibitor library. We identify a series of compounds that induce different types of senescence, including a unique phenotype associated with irregularly shaped nuclei and the progressive accumulation of G1 tetraploidy in human diploid fibroblasts. Downstream analyses show that all of the compounds that induce tetraploid senescence inhibit Aurora kinase B (AURKB). AURKB is the catalytic component of the chromosome passenger complex, which is involved in correct chromosome alignment and segregation, the spindle assembly checkpoint, and cytokinesis. Although aberrant mitosis and senescence have been linked, a specific characterization of AURKB in the context of senescence is still required. This proof-of-principle study suggests that our protocol is capable of amplifying tetraploid senescence, which can be observed in only a small population of oncogenic RAS-induced senescence, and provides additional justification for AURKB as a cancer therapeutic target.
Collapse
Affiliation(s)
- Mahito Sadaie
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| | - Christian Dillon
- Cancer Research Technology Discovery Laboratories, Wolfson Institute for Biomedical Research, London WC1E 6BT, United Kingdom
| | - Masashi Narita
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| | - Andrew R. J. Young
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| | - Claire J. Cairney
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow G61 1QH, United Kingdom
| | - Lauren S. Godwin
- St. George's, University of London, London SW17 0RE, United Kingdom
| | | | | | - W. Nicol Keith
- Institute of Cancer Sciences, Wolfson Wohl Cancer Research Centre, University of Glasgow, Glasgow G61 1QH, United Kingdom
| | - Masashi Narita
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| |
Collapse
|
21
|
Chan ASL, Mowla SN, Arora P, Jat PS. Tumour suppressors and cellular senescence. IUBMB Life 2014; 66:812-22. [PMID: 25557529 DOI: 10.1002/iub.1335] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/01/2014] [Indexed: 01/09/2023]
Abstract
Cellular senescence is a stable cell cycle arrest that normal cells undergo in response to a variety of intrinsic and extrinsic stimuli, including progressive telomere shortening, changes in telomeric structure or other forms of genotoxic as well nongenotoxic stress. Senescence is thought to have originated as a remodelling program that is active in embryonic development and acts as a key tumour suppressor mechanism during the reproductive stage in early adult life, by leading to the removal of potentially cancerous cells. However, in later adult life, it promotes organismal aging by compromising tissue repair and regeneration due to the accumulation of senescent cells, depletion of stem/progenitor cells and secretion of an array of inflammatory cytokines, chemokines and matrix metalloproteases. Whilst suppressing tumour formation in the senescent cells, these inflammatory cytokines, chemokines and metalloproteases can promote tumour progression and metastasis in the neighbouring cells. Herein, we review the molecular pathways that underlie cellular senescence and how it contributes towards tumour suppression.
Collapse
Affiliation(s)
- Adelyne S L Chan
- Department of Neurodegenerative Disease and MRC Prion Unit, UCL Institute of Neurology, Queen Square, London, WC1N 3BG
| | | | | | | |
Collapse
|
22
|
Lahtela J, Corson LB, Hemmes A, Brauer MJ, Koopal S, Lee J, Hunsaker TL, Jackson PK, Verschuren EW. A high-content cellular senescence screen identifies candidate tumor suppressors, including EPHA3. Cell Cycle 2013; 12:625-34. [PMID: 23324396 PMCID: PMC3594263 DOI: 10.4161/cc.23515] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Activation of a cellular senescence program is a common response to prolonged oncogene activation or tumor suppressor loss, providing a physiological mechanism for tumor suppression in premalignant cells. The link between senescence and tumor suppression supports the hypothesis that a loss-of-function screen measuring bona fide senescence marker activation should identify candidate tumor suppressors. Using a high-content siRNA screening assay for cell morphology and proliferation measures, we identify 12 senescence-regulating kinases and determine their senescence marker signatures, including elevation of senescence-associated β-galactosidase, DNA damage and p53 or p16INK4a expression. Consistent with our hypothesis, SNP array CGH data supports loss of gene copy number of five senescence-suppressing genes across multiple tumor samples. One such candidate is the EPHA3 receptor tyrosine kinase, a gene commonly mutated in human cancer. We demonstrate that selected intracellular EPHA3 tumor-associated point mutations decrease receptor expression level and/or receptor tyrosine kinase (RTK) activity. Our study therefore describes a new strategy to mine for novel candidate tumor suppressors and provides compelling evidence that EPHA3 mutations may promote tumorigenesis only when key senescence-inducing pathways have been inactivated.
Collapse
Affiliation(s)
- Jenni Lahtela
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Murata M, Yudoh K, Shimizu H, Beppu M, Nakamura H, Kato T, Masuko K. Layilin, a talin-binding hyaluronan receptor, is expressed in human articular chondrocytes and synoviocytes and is down-regulated by interleukin-1β. Mod Rheumatol 2012; 23:478-88. [PMID: 22722918 DOI: 10.1007/s10165-012-0686-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 05/28/2012] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Layilin (LAYN), a 55-kDa transmembrane protein with homology to C-type lectins, has been identified as a receptor of hyaluronan (HA). Interestingly, LAYN does not share any sequence homology with CD44, a primary HA receptor. The primary aim of our study was to examine the expression and potential function of LAYN in human articular chondrocytes and synoviocytes. METHODS Samples were obtained from patients undergoing joint arthroplasty. Cells were grown in vitro, then stimulated with interleukin (IL)-1β or tumor necrosis factor alpha (TNFα) for 24 h and the expression of LAYN was analyzed. To assess the function of LAYN, we transfected chondrocytes with siRNA against LAYN, treated them with HA and IL-1β, and then analyzed the production of matrix metalloproteinase (MMP)-1 and MMP-13 in the treated chrondrocytes. RESULTS The results showed that LAYN was constitutively expressed in human articular chondrocytes and synoviocytes and that IL-1β significantly suppressed the expression of LAYN in these cells. HA repressed IL-1β-induced MMP-1 and MMP-13 production in chondrocytes, but this was significantly abrogated in chondrocytes transfected with siRNA against LAYN. CONCLUSIONS Our results show that human chondrocytes express LAYN, a novel HA receptor, and that LAYN may contribute to the regulation of HA functions in the arthritic condition. Further investigation of the HA receptor may lead to the development of novel therapeutics to regulate HA signaling in inflammatory arthritis.
Collapse
Affiliation(s)
- Minako Murata
- Department of Frontier Medicine, Institute of Medical Science, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511, Japan.
| | | | | | | | | | | | | |
Collapse
|
24
|
Salminen A, Kauppinen A, Kaarniranta K. Emerging role of NF-κB signaling in the induction of senescence-associated secretory phenotype (SASP). Cell Signal 2012; 24:835-45. [PMID: 22182507 DOI: 10.1016/j.cellsig.2011.12.006] [Citation(s) in RCA: 462] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 12/04/2011] [Indexed: 11/17/2022]
Abstract
The major hallmark of cellular senescence is an irreversible cell cycle arrest and thus it is a potent tumor suppressor mechanism. Genotoxic insults, e.g. oxidative stress, are important inducers of the senescent phenotype which is characterized by an accumulation of senescence-associated heterochromatic foci (SAHF) and DNA segments with chromatin alterations reinforcing senescence (DNA-SCARS). Interestingly, senescent cells secrete pro-inflammatory factors and thus the condition has been called the senescence-associated secretory phenotype (SASP). Emerging data has revealed that NF-κB signaling is the major signaling pathway which stimulates the appearance of SASP. It is known that DNA damage provokes NF-κB signaling via a variety of signaling complexes containing NEMO protein, an NF-κB essential modifier, as well as via the activation of signaling pathways of p38MAPK and RIG-1, retinoic acid inducible gene-1. Genomic instability evoked by cellular stress triggers epigenetic changes, e.g. release of HMGB1 proteins which are also potent enhancers of inflammatory responses. Moreover, environmental stress and chronic inflammation can stimulate p38MAPK and ceramide signaling and induce cellular senescence with pro-inflammatory responses. On the other hand, two cyclin-dependent kinase inhibitors, p16INK4a and p14ARF, are effective inhibitors of NF-κB signaling. We will review in detail the signaling pathways which activate NF-κB signaling and trigger SASP in senescent cells.
Collapse
Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FIN-70211 Kuopio, Finland.
| | | | | |
Collapse
|
25
|
Abstract
Cellular senescence is a program of irreversible cell cycle arrest that cells undergo in response to a variety of intrinsic and extrinsic stimuli including progressive shortening of telomeres, changes in telomeric structure or other forms of genotoxic and non-genotoxic stress. The role of nuclear factor-κB in cellular senescence is controversial, as it has been associated with both proliferation and tumour progression, and also with growth arrest and ageing. This research perspective focuses on the evidence for a functional relationship between NF-κB and senescence, and how disruption of the NF-κB pathway can lead to its bypass.
Collapse
Affiliation(s)
- Simon Vaughan
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
| | | |
Collapse
|