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Krarup J, Araya L, Álvarez F, Bórquez DA, Urrutia PJ. A Brain Anti-Senescence Transcriptional Program Triggered by Hypothalamic-Derived Exosomal microRNAs. Int J Mol Sci 2024; 25:5467. [PMID: 38791505 PMCID: PMC11122052 DOI: 10.3390/ijms25105467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/08/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
In contrast to the hypothesis that aging results from cell-autonomous deterioration processes, the programmed longevity theory proposes that aging arises from a partial inactivation of a "longevity program" aimed at maintaining youthfulness in organisms. Supporting this hypothesis, age-related changes in organisms can be reversed by factors circulating in young blood. Concordantly, the endocrine secretion of exosomal microRNAs (miRNAs) by hypothalamic neural stem cells (htNSCs) regulates the aging rate by enhancing physiological fitness in young animals. However, the specific molecular mechanisms through which hypothalamic-derived miRNAs exert their anti-aging effects remain unexplored. Using experimentally validated miRNA-target gene interactions and single-cell transcriptomic data of brain cells during aging and heterochronic parabiosis, we identify the main pathways controlled by these miRNAs and the cell-type-specific gene networks that are altered due to age-related loss of htNSCs and the subsequent decline in specific miRNA levels in the cerebrospinal fluid (CSF). Our bioinformatics analysis suggests that these miRNAs modulate pathways associated with senescence and cellular stress response, targeting crucial genes such as Cdkn2a, Rps27, and Txnip. The oligodendrocyte lineage appears to be the most responsive to age-dependent loss of exosomal miRNA, leading to significant derepression of several miRNA target genes. Furthermore, heterochronic parabiosis can reverse age-related upregulation of specific miRNA-targeted genes, predominantly in brain endothelial cells, including senescence promoting genes such as Cdkn1a and Btg2. Our findings support the presence of an anti-senescence mechanism triggered by the endocrine secretion of htNSC-derived exosomal miRNAs, which is associated with a youthful transcriptional signature.
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Affiliation(s)
- Josefa Krarup
- Laboratory of Cell Signaling & Bioinformatics, Center for Biomedical Research, Faculty of Medicine, Universidad Diego Portales, Ejército Libertador 141, Santiago 8370007, Chile; (J.K.); (F.Á.)
| | - Lucas Araya
- Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago 7810000, Chile;
| | - Felipe Álvarez
- Laboratory of Cell Signaling & Bioinformatics, Center for Biomedical Research, Faculty of Medicine, Universidad Diego Portales, Ejército Libertador 141, Santiago 8370007, Chile; (J.K.); (F.Á.)
| | - Daniel A. Bórquez
- Laboratory of Cell Signaling & Bioinformatics, Center for Biomedical Research, Faculty of Medicine, Universidad Diego Portales, Ejército Libertador 141, Santiago 8370007, Chile; (J.K.); (F.Á.)
| | - Pamela J. Urrutia
- Laboratory of Resilient Aging, Institute for Nutrition & Food Technology (INTA), Universidad de Chile, El Líbano 5524, Santiago 7830490, Chile
- Geroscience Center for Brain Health and Metabolism, Santiago 7800003, Chile
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2
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Rochín-Hernández LJ, Rochín-Hernández LS, Padilla-Cristerna ML, Duarte-García A, Jiménez-Acosta MA, Figueroa-Corona MP, Meraz-Ríos MA. Mesenchymal Stem Cells from Familial Alzheimer's Patients Express MicroRNA Differently. Int J Mol Sci 2024; 25:1580. [PMID: 38338859 PMCID: PMC10855944 DOI: 10.3390/ijms25031580] [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: 12/31/2023] [Revised: 01/13/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder and the predominant form of dementia globally. No reliable diagnostic, predictive techniques, or curative interventions are available. MicroRNAs (miRNAs) are vital to controlling gene expression, making them valuable biomarkers for diagnosis and prognosis. This study examines the transcriptome of olfactory ecto-mesenchymal stem cells (MSCs) derived from individuals with the PSEN1(A431E) mutation (Jalisco mutation). The aim is to determine whether this mutation affects the transcriptome and expression profile of miRNAs and their target genes at different stages of asymptomatic, presymptomatic, and symptomatic conditions. Expression microarrays compare the MSCs from mutation carriers with those from healthy donors. The results indicate a distinct variation in the expression of miRNAs and mRNAs among different symptomatologic groups and between individuals with the mutation. Using bioinformatics tools allows us to identify target genes for miRNAs, which in turn affect various biological processes and pathways. These include the cell cycle, senescence, transcription, and pathways involved in regulating the pluripotency of stem cells. These processes are closely linked to inter- and intracellular communication, vital for cellular functioning. These findings can enhance our comprehension and monitoring of the disease's physiological processes, identify new disorder indicators, and develop innovative treatments and diagnostic tools for preventing or treating AD.
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Affiliation(s)
- Lory J. Rochín-Hernández
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
| | - Lory S. Rochín-Hernández
- Departamento de Biotecnología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico;
| | - Mayte L. Padilla-Cristerna
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
| | - Andrea Duarte-García
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
| | - Miguel A. Jiménez-Acosta
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
| | - María P. Figueroa-Corona
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
| | - Marco A. Meraz-Ríos
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.L.P.-C.); (A.D.-G.); (M.A.J.-A.); (M.P.F.-C.)
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3
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He Y, Yang P, Yuan T, Zhang L, Yang G, Jin J, Yu T. miR-103-3p Regulates the Proliferation and Differentiation of C2C12 Myoblasts by Targeting BTG2. Int J Mol Sci 2023; 24:15318. [PMID: 37894995 PMCID: PMC10607603 DOI: 10.3390/ijms242015318] [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: 08/31/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Skeletal muscle, a vital and intricate organ, plays a pivotal role in maintaining overall body metabolism, facilitating movement, and supporting normal daily activities. An accumulating body of evidence suggests that microRNA (miRNA) holds a crucial role in orchestrating skeletal muscle growth. Therefore, the primary aim of this study was to investigate the influence of miR-103-3p on myogenesis. In our study, the overexpression of miR-103-3p was found to stimulate proliferation while suppressing differentiation in C2C12 myoblasts. Conversely, the inhibition of miR-103-3p expression yielded contrasting effects. Through bioinformatics analysis, potential binding sites of miR-103-3p with the 3'UTR region of BTG anti-proliferative factor 2 (BTG2) were predicted. Subsequently, dual luciferase assays conclusively demonstrated BTG2 as the direct target gene of miR-103-3p. Further investigation into the role of BTG2 in C2C12 myoblasts unveiled that its overexpression impeded proliferation and encouraged differentiation in these cells. Notably, co-transfection experiments showcased that the overexpression of BTG2 could counteract the effects induced by miR-103-3p. In summary, our findings elucidate that miR-103-3p promotes proliferation while inhibiting differentiation in C2C12 myoblasts by targeting BTG2.
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Affiliation(s)
- Yulin He
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Peiyu Yang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Tiantian Yuan
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Lin Zhang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Gongshe Yang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Jianjun Jin
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Taiyong Yu
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.H.); (P.Y.); (T.Y.); (L.Z.); (G.Y.)
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang 712100, China
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Peng B, Chen Y, Wang Y, Fu Y, Zeng X, Zhou H, Abulaiti Z, Wang S, Zhang H. BTG2 acts as an inducer of muscle stem cell senescence. Biochem Biophys Res Commun 2023; 669:113-119. [PMID: 37269593 DOI: 10.1016/j.bbrc.2023.05.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
BACKGROUND Muscle aging is associated with muscle stem cell (MuSC) senescence, a process of whose DNA damage accumulation is considered as one of the leading causes. BTG2 had been identified as a mediator of genotoxic and cellular stress signaling pathways, however, its role in senescence of stem cells, including MuSC, remains unknown. METHOD We first compared MuSCs isolated from young and old mice to evaluate our in vitro model of natural senescence. CCK8 and EdU assays were utilized to assess the proliferation capacity of the MuSCs. Cellular senescence was further assessed at biochemical levels by SA-β-Gal and γHA2.X staining, and at molecular levels by quantifying the expression of senescence-associated genes. Next, by performing genetic analysis, we identified Btg2 as a potential regulator of MuSC senescence, which was experimentally validated by Btg2 overexpression and knockdown in primary MuSCs. Lastly, we extended our research to humans by analyzing the potential links between BTG2 and muscle function decline in aging. RESULTS BTG2 is highly expressed in MuSCs from elder mice showing senescent phenotypes. Overexpression and knockdown of Btg2 stimulates and prevents MuSCs senescence, respectively. In humans, high level of BTG2 is associated with low muscle mass in aging, and is a risk factor of aging-related diseases, such as diabetic retinopathy and HDL cholesterol. CONCLUSION Our work demonstrates BTG2 as a regulator of MuSC senescence and may serve as an intervention target for muscle aging.
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Affiliation(s)
- Baozhou Peng
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yihan Chen
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yaning Wang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yixi Fu
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xinrui Zeng
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Hanmeng Zhou
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zibaidan Abulaiti
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Shuaiyu Wang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Hongbo Zhang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; The Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
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5
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Hong AE, Ryu MS, Lim IK. Proper regulation of β-adrenergic signal requires Btg2 gene for lipolysis and thermogenesis in response to starvation or cold acclimation in female mice. J Nutr Biochem 2023; 111:109160. [PMID: 36179768 DOI: 10.1016/j.jnutbio.2022.109160] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/16/2022] [Accepted: 08/20/2022] [Indexed: 11/18/2022]
Abstract
Mammals maintain constant body temperature in cold environment by activating thermogenesis via adrenergic/protein kinase A (PKA) signaling. B-cell translocation gene 2 (BTG2/Tis21), induced by PKA signaling, regulates glucose and lipid metabolism in liver, yet its role in lipolysis and in thermogenesis is not explored. Here, Btg2-knockout (KO) mice failed to maintain body temperature under starvation, or in cold acclimation. And norepinephrine-induced thermogenic response was turned off earlier in the KO mice. Gender specifically, gonadal white adipose tissues (gWAT) of female-KO were very active in lipolysis in fed state, however, the fat degradation was diminished upon fasting or cold acclimation. Also, insulin sensitivity was increased in female-KO, but not in male-KO mice, along with the low bone mineral density and small brown adipose tissues (BAT). In the mechanistic aspect, expressions of UCP1 and lipases (LPL, ATGL, HSL) in gWAT of female-KO mice were significantly reduced in response to adrenergic signals. Here, we present some data that Btg2 gene is essential for properly respond to β-adrenergic signals, and plays as a negative regulator of insulin signaling in female mice.
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Affiliation(s)
- Allen Eugene Hong
- Department of Biochemistry and Molecular Biology, Ajou University Graduate School of Medicine, Suwon, Republic of Korea
| | - Min Sook Ryu
- Department of Biochemistry and Molecular Biology, Ajou University Graduate School of Medicine, Suwon, Republic of Korea
| | - In Kyoung Lim
- Department of Biochemistry and Molecular Biology, Ajou University Graduate School of Medicine, Suwon, Republic of Korea.
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6
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Affiliation(s)
- Sang Hyeon Kim
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Severance Biomedical Science Institute and Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - In Ryeong Jung
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Severance Biomedical Science Institute and Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Soo Seok Hwang
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Severance Biomedical Science Institute and Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
- Chronic Intractable Disease Systems Medicine Research Center, Institute of Genetic Science, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
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7
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Zhang X, Sun W, Wu W, Chen M, Ji T, Xu H, Wang Y. Pin1-mediated regulation of articular cartilage stem/progenitor cell aging. Tissue Cell 2022; 76:101765. [PMID: 35227974 DOI: 10.1016/j.tice.2022.101765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 12/28/2022]
Abstract
Cartilage stem/progenitor cells (CSPCs) was recently isolated and identified from the cartilage tissue. CSPCs is essential for repair and regeneration of cartilage in osteoarthritis (OA). Aging is a primary risk factor for cartilage damage and joint OA. Although studies have confirmed the link between cell aging and OA, the underlying molecular mechanisms regulating CSPCs aging are not fully understood. In this study, we investigated the role of Pin1 in the aging of rat knee joint CSPCs. We isolated CSPCs from rat knee joints and demonstrated that, in long-term in vitro culture, Pin1 protein levels are significantly reduced. At the same time, expression of the senescence-related β-galactosidase and the senescence marker p16INK4A were markedly elevated. In addition, Pin1 overexpression reversed the progression of cellular senescence, as evidenced by the down-regulation of senescence-related β-galactosidase, increased EdU positive cells and diminished levels of p16INK4A. In contrast, Pin1 siRNA incorporation promoted CSPCs senescence. In addition, we also observed the distribution of cell cycles through flow cytometry and revealed that Pin1 deficiency results in cell cycle arrest in the G1 phase, suggesting severe lack of proliferation ability, a sign of cellular senescence. Collectively, these results validated that Pin1 is an essential regulator of CSPCs aging.
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Affiliation(s)
- Xiao Zhang
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China; Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Weiwei Sun
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China; Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Weijie Wu
- Department of Orthopaedics, The Sixth People's Hospital of Nantong, Nantong, Jiangsu, 226001, China
| | - Minhao Chen
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China
| | - Tianyi Ji
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China; Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Hua Xu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China.
| | - Youhua Wang
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, 226001, China.
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Hoffman MJ, Takizawa A, Jensen ES, Schilling R, Grzybowski M, Geurts AM, Dwinell MR. Btg2 mutation induces renal injury and impairs blood pressure control in female rats. Physiol Genomics 2022; 54:231-241. [PMID: 35503009 DOI: 10.1152/physiolgenomics.00167.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hypertension (HTN) is a complex disease influenced by heritable genetic elements and environmental interactions. Dietary salt is among the most influential modifiable factors contributing to increased blood pressure (BP). It is well established that men and women develop BP impairment in different patterns and a recent emphasis has been placed on identifying mechanisms leading to the differences observed between the sexes in HTN development. The current work reported here builds on an extensive genetic mapping experiment which sought to identify genetic determinants of salt sensitive (SS) HTN using the Dahl SS rat. BTG anti-proliferation factor 2 (Btg2) was previously identified by our group as a candidate gene contributing to SS HTN in female rats. In the current study, Btg2 was mutated using TALEN targeted gene disruption on the SSBN congenic rat background. The Btg2 mutated rats exhibited impaired BP and proteinuria responses to a high salt diet compared to wild type rats. Differences in body weight, mutant pup viability, skeletal morphology, and adult nephron density suggest a potential role for Btg2 in developmental signaling pathways. Subsequent cell cycle gene expression assessment provides several additional signaling pathways that Btg2 may function through during salt handling in the kidney. The expression analysis also identified several potential upstream targets that can be explored to further isolate therapeutic approaches for SS HTN.
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Affiliation(s)
- Matthew J Hoffman
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Akiko Takizawa
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Eric S Jensen
- Biomedical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Rebecca Schilling
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Michael Grzybowski
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Aron M Geurts
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Melinda R Dwinell
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
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Hyperglycemia induces gastric carcinoma proliferation and migration via the Pin1/BRD4 pathway. Cell Death Dis 2022; 8:224. [PMID: 35461311 PMCID: PMC9035156 DOI: 10.1038/s41420-022-01030-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/18/2022]
Abstract
Diabetes is a potential risk factor for gastric cancer (GC). Pin1, a peptidyl–prolyl cis/trans isomerase, promotes GC cell proliferation and migration. The role and underlying mechanism of the Pin1/BRD4 axis in hyperglycemia-induced proliferation and migration of GC cells were analyzed in vivo and in vitro. Proliferation and migration of GC cells were measured; Pin1 and BRD4 expression of the cell cycle were determined. Pin1 and BRD4 were downregulated by transfecting Pin1 shRNA lentivirus into GC cells and JQ1-intervention GC cells. Tumor formation and lung metastasis were assessed in vivo. Inhibition of Pin1 and BRD4 significantly suppressed high-glucose (HG)-induced GC cell proliferation and migration. HG enhanced G1/S cell-cycle transition, associated with increased Pin1 and BRD4 expression. Silencing Pin1 significantly downregulated the expression of BRD4 and NAP1L1 and upregulated that of P21 in GC cells. In vivo studies indicated that hyperglycemia promotes tumor growth and lung metastasis by inducing Pin1 and BRD4 expression. Thus, Pin1/BRD4 plays an important role in hyperglycemia-promoted tumor growth. The significance of these findings toward improved prognosis of diabetic patients with GC cannot be underestimated.
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10
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Zhang XZ, Chen MJ, Fan PM, Jiang W, Liang SX. BTG2 Serves as a Potential Prognostic Marker and Correlates with Immune Infiltration in Lung Adenocarcinoma. Int J Gen Med 2022; 15:2727-2745. [PMID: 35300128 PMCID: PMC8922043 DOI: 10.2147/ijgm.s340565] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 01/26/2022] [Indexed: 11/23/2022] Open
Abstract
Background B-cell translocation gene 2 (BTG2) has been revealed to be involved in the occurrence and development of multiple cancers. However, the role of BTG2 in lung adenocarcinoma (LUAD) is still ambiguous. Thus, this study aims to investigate the prognostic value of BTG2 and its correlation with immune infiltration in LUAD. Methods The expression of BTG2 in LUAD was analyzed using the TIMER and UALCAN databases. The correlations between BTG2 expression and clinicopathological factors were investigated using the UALCAN databases. The Kaplan–Meier plotter, GEPIA, and TCGA databases were employed to assess the prognostic value of BTG2. The STRING database and Cytoscape software were used to construct an interaction network and mine co-expression genes. The TISIDB database was examined for a correlation between BTG2 and driver genes in LUAD. Enrichment analysis of co-expressed genes and BTG2 was performed using the LinkedOmics database. Finally, the correlations between BTG2 and immune infiltrates were investigated using the TIMER, GEO, and TISIDB database. Results BTG2 was significantly downregulated in LUAD. The decreased expression of BTG2 in LUAD was significantly correlated with higher cancer stages and shorter duration of overall survival. The expressions of BTG2-related co-expression genes were associated with the prognosis in LUAD. The expression of BTG2 was closely associated with the mutations of TP53 and ROS1. Enrichment analysis revealed that BTG2 was significantly correlated with immune‐associated signaling pathways and function. In addition, the expression of BTG2 was found to be closely related to immune infiltration, multiple gene markers of immune cells, chemokines, and chemokine receptors. Conclusion Our findings have effectively demonstrated that BTG2 expression was downregulated in LUAD, indicating poor prognosis. Closely relating to immune cell infiltration, BTG2 may be a promising immune-related biomarker and molecular target for patients with LUAD.
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Affiliation(s)
- Xiao Zhen Zhang
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital, Nanning, 530021, Guangxi Zhuang Autonomous Region, People’s Republic of China
| | - Mao Jian Chen
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, Guangdong, People’s Republic of China
- Department of Respiratory Oncology, Guangxi Medical University Cancer Hospital, Nanning, 530021, Guangxi Zhuang Autonomous Region, People’s Republic of China
| | - Ping Ming Fan
- Department of Breast-Thoracic Tumor Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, 570102, Hainan, People’s Republic of China
| | - Wei Jiang
- Department of Respiratory Oncology, Guangxi Medical University Cancer Hospital, Nanning, 530021, Guangxi Zhuang Autonomous Region, People’s Republic of China
| | - Shi Xiong Liang
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital, Nanning, 530021, Guangxi Zhuang Autonomous Region, People’s Republic of China
- Correspondence: Shi Xiong Liang; Wei Jiang, Email ;
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11
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Wang K, Zhu QZ, Ma XT, Cheng C. SUV39H2/KMT1B Inhibits the cardiomyocyte senescence phenotype by down-regulating BTG2/PC3. Aging (Albany NY) 2021; 13:22444-22458. [PMID: 34559682 PMCID: PMC8507256 DOI: 10.18632/aging.203551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 08/24/2021] [Indexed: 04/08/2023]
Abstract
Suppressor of variegation 3-9 homolog 2 (SUV39H2/KMT1B), a member of the SUV39 subfamily of lysine methyltransferases (KMTs), functions as an oncogene in various types of cancers. Here, we demonstrate a novel function of SUV39H2 that drives the cardiomyocyte aging process through BTG2. In our study, cardiomyocyte aging was induced by H2O2 and aging cells exhibited increases in SUV39H2. Knockdown of SUV39H2 accelerated cardiomyocyte senescence, while overexpression of SUV39H2 inhibited the cardiomyocyte senescence phenotype. These effects of SUV39H2 on cardiomyocytes were independent of DNA damage and mitochondrial dysfunction. Interestingly, RNA sequencing and bioinformatics analyses identified a strong correlation between SUV39H2 and BTG2. In addition to this, BTG2 protein levels were significantly increased in SUV39H2-deficient cardiomyocytes, and BTG2 knockdown virtually rescued the cardiomyocyte senescence phenotype induced by SUV39H2 knockdown. Taken together, these results indicate that SUV39H2 protects cardiomyocytes from H2O2 exposure-induced oxidative stress, DNA damage, and mitochondrial dysfunction by regulating the p53-BTG2 pathway. Our findings provide evidence that the activation of SUV39H2 has therapeutic or preventive potential against cardiac aging.
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Affiliation(s)
- Kan Wang
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Qiang Zhang Zhu
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Xian Tao Ma
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Cai Cheng
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
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12
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Zhang Y, Lv Z, Liu Y, Cao H, Yang J, Wang B. PIN1 Protects Hair Cells and Auditory HEI-OC1 Cells against Senescence by Inhibiting the PI3K/Akt/mTOR Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9980444. [PMID: 34285767 PMCID: PMC8273041 DOI: 10.1155/2021/9980444] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 05/14/2021] [Indexed: 11/17/2022]
Abstract
A growing amount of evidence has confirmed the crucial role of the prolyl isomerase PIN1 in aging and age-related diseases. However, the mechanism of PIN1 in age-related hearing loss (ARHL) remains unclear. Pathologically, ARHL is primarily due to the loss and dysfunction of hair cells (HCs) and spiral ganglion cells (SGCs) in the cochlea. Therefore, in this study, we aimed to investigate the role of PIN1 in protecting hair cells and auditory HEI-OC1 cells from senescence. Enzyme-linked immunosorbent assays, immunohistochemistry, and immunofluorescence were used to detect the PIN1 protein level in the serum of ARHL patients and C57BL/6 mice in different groups, and in the SGCs and HCs of young and aged C57BL/6 mice. In addition, a model of HEI-OC1 cell senescence induced by H2O2 was used. Adult C57BL/6 mice were treated with juglone, or juglone and NAC, for 4 weeks. Interestingly, we found that the PIN1 protein expression decreased in the serum of patients with ARHL, in senescent HEI-OC1 cells, and in the cochlea of aged mice. Moreover, under H2O2 and juglone treatment, a large amount of ROS was produced, and phosphorylation of p53 was induced. Importantly, PIN1 expression was significantly increased by treatment with the p53 inhibitor pifithrin-α. Overexpression of PIN1 reversed the increased level of p-p53 and rescued HEI-OC1 cells from senescence. Furthermore, PIN1 mediated cellular senescence by the PI3K/Akt/mTOR signaling pathway. In vivo data from C57BL/6 mice showed that treatment with juglone led to hearing loss. Taken together, these findings demonstrated that PIN1 may act as a vital modulator in hair cell and HEI-OC1 cell senescence.
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Affiliation(s)
- Yanzhuo Zhang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
| | - Zhe Lv
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
| | - Yudong Liu
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
- Department of Otorhinolaryngology, Hebei General Hospital, Shijiazhuang 050051, China
| | - Huan Cao
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
| | - Jianwang Yang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
| | - Baoshan Wang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, No. 215 West Heping Road, Shijiazhuang 050000, China
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13
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Suzuki K, Shinohara M, Uno Y, Tashiro Y, Gheni G, Yamamoto M, Fukumori A, Shindo A, Mashimo T, Tomimoto H, Sato N. Deletion of B-cell translocation gene 2 (BTG2) alters the responses of glial cells in white matter to chronic cerebral hypoperfusion. J Neuroinflammation 2021; 18:86. [PMID: 33812385 PMCID: PMC8019185 DOI: 10.1186/s12974-021-02135-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 03/19/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Subcortical ischemic vascular dementia, one of the major subtypes of vascular dementia, is characterized by lacunar infarcts and white matter lesions caused by chronic cerebral hypoperfusion. In this study, we used a mouse model of bilateral common carotid artery stenosis (BCAS) to investigate the role of B-cell translocation gene 2 (BTG2), an antiproliferation gene, in the white matter glial response to chronic cerebral hypoperfusion. METHODS Btg2-/- mice and littermate wild-type control mice underwent BCAS or sham operation. Behavior phenotypes were assessed by open-field test and Morris water maze test. Brain tissues were analyzed for the degree of white matter lesions and glial changes. To further confirm the effects of Btg2 deletion on proliferation of glial cells in vitro, BrdU incorporation was investigated in mixed glial cells derived from wild-type and Btg2-/- mice. RESULTS Relative to wild-type mice with or without BCAS, BCAS-treated Btg2-/- mice exhibited elevated spontaneous locomotor activity and poorer spatial learning ability. Although the severities of white matter lesions did not significantly differ between wild-type and Btg2-/- mice after BCAS, the immunoreactivities of GFAP, a marker of astrocytes, and Mac2, a marker of activated microglia and macrophages, in the white matter of the optic tract were higher in BCAS-treated Btg2-/- mice than in BCAS-treated wild-type mice. The expression level of Gfap was also significantly elevated in BCAS-treated Btg2-/- mice. In vitro analysis showed that BrdU incorporation in mixed glial cells in response to inflammatory stimulation associated with cerebral hypoperfusion was higher in Btg2-/- mice than in wild-type mice. CONCLUSION BTG2 negatively regulates glial cell proliferation in response to cerebral hypoperfusion, resulting in behavioral changes.
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Affiliation(s)
- Kaoru Suzuki
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Mitsuru Shinohara
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Uno
- Institute of Experimental Animal Sciences, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshitaka Tashiro
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Ghupurjan Gheni
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Miho Yamamoto
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Akio Fukumori
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akihiko Shindo
- Department of Neurology, Graduate School of Medicine, Mie University, 174, Edobashi 2-chome, Tsu, Mie, 514-8507, Japan
| | - Tomoji Mashimo
- Institute of Experimental Animal Sciences, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Graduate School of Medicine, Mie University, 174, Edobashi 2-chome, Tsu, Mie, 514-8507, Japan
| | - Naoyuki Sato
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan.
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
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14
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Targeting Pin1 for Modulation of Cell Motility and Cancer Therapy. Biomedicines 2021; 9:biomedicines9040359. [PMID: 33807199 PMCID: PMC8065645 DOI: 10.3390/biomedicines9040359] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 01/09/2023] Open
Abstract
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 (Pin1) specifically binds and isomerizes the phosphorylated serine/threonine-proline (pSer/Thr-Pro) motif, which leads to changes in protein conformation and function. Pin1 is widely overexpressed in cancers and plays an important role in tumorigenesis. Mounting evidence has revealed that targeting Pin1 is a potential therapeutic approach for various cancers by inhibiting cell proliferation, reducing metastasis, and maintaining genome stability. In this review, we summarize the underlying mechanisms of Pin1-mediated upregulation of oncogenes and downregulation of tumor suppressors in cancer development. Furthermore, we also discuss the multiple roles of Pin1 in cancer hallmarks and examine Pin1 as a desirable pharmaceutical target for cancer therapy. We also summarize the recent progress of Pin1-targeted small-molecule compounds for anticancer activity.
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15
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Strobl J, Pandey RV, Krausgruber T, Bayer N, Kleissl L, Reininger B, Vieyra-Garcia P, Wolf P, Jentus MM, Mitterbauer M, Wohlfarth P, Rabitsch W, Stingl G, Bock C, Stary G. Long-term skin-resident memory T cells proliferate in situ and are involved in human graft-versus-host disease. Sci Transl Med 2020; 12:eabb7028. [PMID: 33208504 PMCID: PMC7615006 DOI: 10.1126/scitranslmed.abb7028] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/03/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022]
Abstract
The skin contains a population of tissue-resident memory T cells (Trm) that is thought to contribute to local tissue homeostasis and protection against environmental injuries. Although information about the regulation, survival program, and pathophysiological roles of Trm has been obtained from murine studies, little is known about the biology of human cutaneous Trm Here, we showed that host-derived CD69+ αβ memory T cell clones in the epidermis and dermis remain stable and functionally competent for at least 10 years in patients with allogeneic hematopoietic stem cell transplantation. Single-cell RNA sequencing revealed low expression of genes encoding tissue egress molecules by long-term persisting Trm in the skin, whereas tissue retention molecules and stem cell markers were displayed by Trm The transcription factor RUNX3 and the surface molecule galectin-3 were preferentially expressed by host T cells at the RNA and protein levels, suggesting two new markers for human skin Trm Furthermore, skin lesions from patients developing graft-versus-host disease (GVHD) showed a large number of cytokine-producing host-derived Trm, suggesting a contribution of these cells to the pathogenesis of GVHD. Together, our studies highlighted the relationship between the local human skin environment and long-term persisting Trm, which differs from murine skin. Our results also indicated that local tissue inflammation occurs through host-derived Trm after allogeneic hematopoietic stem cell transplantation.
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Affiliation(s)
- Johanna Strobl
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Ram Vinay Pandey
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Thomas Krausgruber
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Nadine Bayer
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Lisa Kleissl
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, 1090 Vienna, Austria
| | - Bärbel Reininger
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Pablo Vieyra-Garcia
- Department of Dermatology and Venereology, Medical University of Graz, 8036 Graz, Austria
| | - Peter Wolf
- Department of Dermatology and Venereology, Medical University of Graz, 8036 Graz, Austria
| | - Maaia-Margo Jentus
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Margit Mitterbauer
- Department of Internal Medicine I, Hematopoietic Stem Cell Transplantation Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Philipp Wohlfarth
- Department of Internal Medicine I, Hematopoietic Stem Cell Transplantation Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Werner Rabitsch
- Department of Internal Medicine I, Hematopoietic Stem Cell Transplantation Unit, Medical University of Vienna, 1090 Vienna, Austria
| | - Georg Stingl
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Christoph Bock
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, 1090 Vienna, Austria
- Department of Laboratory Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Georg Stary
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria.
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, 1090 Vienna, Austria
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16
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Wang K, Fan J, Lin W, Zou C, He M, Cai Y, Pei H, Li M. Functional polymorphism of PIN1 rs2233679 is associated with the progression of CIN to early cervical cancer in Hunan Chinese. Taiwan J Obstet Gynecol 2020; 59:220-226. [PMID: 32127141 DOI: 10.1016/j.tjog.2020.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Peptidyl-prolyl cis/trans isomerase NIMA-interacting 1 (PIN1) involves alteration of the structure, function, intracellular localization and/or stability of the phosphorylated protein on serine or threonine residues which relates to inflammation and tumorigenesis. Association between PIN1 promoter polymorphisms and cancer risk were reported in several cancers. We intend to study the relationship between the polymorphism of PIN1 promoter and cervical cancer initiation and development. MATERIALS AND METHODS We genotyped two common single nucleotide polymorphisms (SNPs) (rs2233678 and rs2233679) in the promoter of the PIN1 gene in healthy controls, patients with CIN or cervical cancer. We used polymerase chain reaction and DNA sequencing methods to analyze these two SNPs in 179 patients and 223 healthy controls. Luciferase activity assay was used to detect PIN1 expression driven by the rs2233679. RESULTS The results revealed that the carriers of rs2233679 genotypes CT/TT had a significantly increased risk of cervical cancer in patients with CIN compared with genotype CC (odds ration [OR] = 2.924, 95% confidence interval [CI] = 1.093-7.819, P = 0.033). Luciferase activity assay results revealed that PIN1 expression driven by the rs2233679 genotype TT was higher than the genotype CC (P < 0.05). On the other hand, no significant correlation between the healthy controls and patients was found for PIN1 rs2233678 which showed that rs2233678 genotypes CG/GG is 95% in healthy controls and 100% in patients. CONCLUSION PIN1 rs2233679 genotype CT/TT may be a risk factor of early cervical cancer compared with genotype CC in Hunan populations. Our findings suggest that PIN1 rs2233679 genotype CT/TT might involve in the progression of the precancerous stage developing to early cancer by enhancing PIN1 expression.
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Affiliation(s)
- Kangtao Wang
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008 PR China.
| | - Jielin Fan
- Department of Gynecologic Tumor, Affiliated Cancer Hospital of Central South University, Changsha, Hunan 410013 PR China.
| | - Wenchao Lin
- Xiangya School of Medicine, Central South University, Changsha, Hunan 410008 PR China.
| | - Chun Zou
- Department of Immunology, College of Basic Medical Science, Central South University, Changsha, Hunan 410008 PR China.
| | - Mei He
- Department of Immunology, College of Basic Medical Science, Central South University, Changsha, Hunan 410008 PR China.
| | - Yubo Cai
- Department of Immunology, College of Basic Medical Science, Central South University, Changsha, Hunan 410008 PR China.
| | - Haiping Pei
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008 PR China.
| | - Ming Li
- Department of Immunology, College of Basic Medical Science, Central South University, Changsha, Hunan 410008 PR China.
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17
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Zannini A, Rustighi A, Campaner E, Del Sal G. Oncogenic Hijacking of the PIN1 Signaling Network. Front Oncol 2019; 9:94. [PMID: 30873382 PMCID: PMC6401644 DOI: 10.3389/fonc.2019.00094] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/01/2019] [Indexed: 12/18/2022] Open
Abstract
Cellular choices are determined by developmental and environmental stimuli through integrated signal transduction pathways. These critically depend on attainment of proper activation levels that in turn rely on post-translational modifications (PTMs) of single pathway members. Among these PTMs, post-phosphorylation prolyl-isomerization mediated by PIN1 represents a unique mechanism of spatial, temporal and quantitative control of signal transduction. Indeed PIN1 was shown to be crucial for determining activation levels of several pathways and biological outcomes downstream to a plethora of stimuli. Of note, studies performed in different model organisms and humans have shown that hormonal, nutrient, and oncogenic stimuli simultaneously affect both PIN1 activity and the pathways that depend on PIN1-mediated prolyl-isomerization, suggesting the existence of evolutionarily conserved molecular circuitries centered on this isomerase. This review focuses on molecular mechanisms and cellular processes like proliferation, metabolism, and stem cell fate, that are regulated by PIN1 in physiological conditions, discussing how these are subverted in and hijacked by cancer cells. Current status and open questions regarding the use of PIN1 as biomarker and target for cancer therapy as well as clinical development of PIN1 inhibitors are also addressed.
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Affiliation(s)
- Alessandro Zannini
- National Laboratory CIB, Trieste, Italy.,Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Alessandra Rustighi
- National Laboratory CIB, Trieste, Italy.,Department of Life Sciences, University of Trieste, Trieste, Italy
| | | | - Giannino Del Sal
- National Laboratory CIB, Trieste, Italy.,Department of Life Sciences, University of Trieste, Trieste, Italy.,IFOM - Istituto FIRC Oncologia Molecolare, Milan, Italy
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18
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Yuniati L, Scheijen B, van der Meer LT, van Leeuwen FN. Tumor suppressors BTG1 and BTG2: Beyond growth control. J Cell Physiol 2018; 234:5379-5389. [PMID: 30350856 PMCID: PMC6587536 DOI: 10.1002/jcp.27407] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 08/22/2018] [Indexed: 01/21/2023]
Abstract
Since the identification of B‐cell translocation gene 1 (BTG1) and BTG2 as antiproliferation genes more than two decades ago, their protein products have been implicated in a variety of cellular processes including cell division, DNA repair, transcriptional regulation and messenger RNA stability. In addition to affecting differentiation during development and in the adult, BTG proteins play an important role in maintaining homeostasis under conditions of cellular stress. Genomic profiling of B‐cell leukemia and lymphoma has put BTG1 and BTG2 in the spotlight, since both genes are frequently deleted or mutated in these malignancies, pointing towards a role as tumor suppressors. Moreover, in solid tumors, reduced expression of BTG1 or BTG2 is often correlated with malignant cell behavior and poor treatment outcome. Recent studies have uncovered novel roles for BTG1 and BTG2 in genotoxic and integrated stress responses, as well as during hematopoiesis. This review summarizes what is currently known about the roles of BTG1 and BTG2 in these and other cellular processes. In addition, we will highlight the molecular mechanisms and biological consequences of BTG1 and BTG2 deregulation during cancer progression and elaborate on the potential clinical implications of these findings.
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Affiliation(s)
- Laurensia Yuniati
- Laboratory of Pediatric Oncology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands.,Hubrecht Institute-KNAW, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Blanca Scheijen
- Laboratory of Pediatric Oncology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Laurens T van der Meer
- Laboratory of Pediatric Oncology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frank N van Leeuwen
- Laboratory of Pediatric Oncology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands
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19
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Prolyl isomerase Pin1: a promoter of cancer and a target for therapy. Cell Death Dis 2018; 9:883. [PMID: 30158600 PMCID: PMC6115400 DOI: 10.1038/s41419-018-0844-y] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/15/2018] [Accepted: 06/27/2018] [Indexed: 12/15/2022]
Abstract
Pin1 is the only known peptidyl-prolyl cis–trans isomerase (PPIase) that specifically recognizes and isomerizes the phosphorylated Serine/Threonine-Proline (pSer/Thr-Pro) motif. The Pin1-mediated structural transformation posttranslationally regulates the biofunctions of multiple proteins. Pin1 is involved in many cellular processes, the aberrance of which lead to both degenerative and neoplastic diseases. Pin1 is highly expressed in the majority of cancers and its deficiency significantly suppresses cancer progression. According to the ground-breaking summaries by Hanahan D and Weinberg RA, the hallmarks of cancer comprise ten biological capabilities. Multiple researches illuminated that Pin1 contributes to these aberrant behaviors of cancer via promoting various cancer-driving pathways. This review summarized the detailed mechanisms of Pin1 in different cancer capabilities and certain Pin1-targeted small-molecule compounds that exhibit anticancer activities, expecting to facilitate anticancer therapies by targeting Pin1.
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20
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Lv L, Ye M, Duan R, Yuan K, Chen J, Liang W, Zhou Z, Zhang L. Downregulation of Pin1 in human atherosclerosis and its association with vascular smooth muscle cell senescence. J Vasc Surg 2017; 68:873-883.e5. [PMID: 28986099 DOI: 10.1016/j.jvs.2017.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/16/2016] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Pin1 is prevalently overexpressed in human cancers and implicated to regulate cell growth and apoptosis. Thus far, however, no role for Pin1 has been described in modulating vascular smooth muscle cell (VSMC) senescence. METHODS Immunohistochemistry and Western blotting were used to assess Pin1 protein level in human normal and atherosclerotic tissues. β-galactosidase staining, cumulative population doubling level, telomerase activity, and relative telomere length measurement were used to confirm VSMC senescence. The expressions of Pin1 and other genes involved in this research were analyzed by quantitative reverse-transcription polymerase chain reaction and Western blotting in VSMCs. Apolipoprotein E gene-deleted mice (ApoE-/-) fed a high-fat diet were treated with juglone or 10% ethanol, respectively, for 3 weeks. The extent of atherosclerosis was evaluated by Oil Red O, Masson trichrome staining, and immunohistology. RESULTS Pin1 protein level decreased in human atherosclerotic tissues and VSMCs, synchronously with increased VSMC senescence. Adenoviral-mediated Pin1 overexpression rescued cellular senescence in atherosclerotic VSMCs, with concurrent down-regulation of P53, p21, growth arrest and DNA-damage-inducible protein 45-alpha (Gadd45a), phosphorylated retinoblastoma (p-pRb), p65 and upregulation of cyclin subfamilies (cyclin B, D, and E), and cyclin-dependent kinase subfamilies (2, 4, and 6), whereas Pin1 knockdown resulted in the converse effects, indicating that VSMC senescence mediated by Pin1 is an integrated response to diverse signals. In vivo data from ApoE-/- mice showed that treatment of juglone led to accelerated atherosclerosis development. CONCLUSIONS Altogether this work supports a role for Pin1 as a vital modulator of VSMC senescence, thereby providing a novel target for regulation and control of atherosclerosis.
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Affiliation(s)
- Lei Lv
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Meng Ye
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rundan Duan
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kai Yuan
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaquan Chen
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Liang
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhaoxiong Zhou
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lan Zhang
- Department of Vascular Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Progerin-Induced Replication Stress Facilitates Premature Senescence in Hutchinson-Gilford Progeria Syndrome. Mol Cell Biol 2017; 37:MCB.00659-16. [PMID: 28483909 DOI: 10.1128/mcb.00659-16] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 04/28/2017] [Indexed: 12/12/2022] Open
Abstract
Hutchinson-Gilford progeria syndrome (HGPS) is caused by a mutation in LMNA that produces an aberrant lamin A protein, progerin. The accumulation of progerin in HGPS cells leads to an aberrant nuclear morphology, genetic instability, and p53-dependent premature senescence. How p53 is activated in response to progerin production is unknown. Here we show that young cycling HGPS fibroblasts exhibit chronic DNA damage, primarily in S phase, as well as delayed replication fork progression. We demonstrate that progerin binds to PCNA, altering its distribution away from replicating DNA in HGPS cells, leading to γH2AX formation, ATR activation, and RPA Ser33 phosphorylation. Unlike normal human cells that can be immortalized by enforced expression of telomerase alone, immortalization of HGPS cells requires telomerase expression and p53 repression. In addition, we show that the DNA damage response in HGPS cells does not originate from eroded telomeres. Together, these results establish that progerin interferes with the coordination of essential DNA replication factors, causing replication stress, and is the primary signal for p53 activation leading to premature senescence in HGPS. Furthermore, this damage response is shown to be independent of progerin farnesylation, implying that unprocessed lamin A alone causes replication stress.
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22
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Chamorro CI, Zeiai S, Reinfeldt Engberg G, Brodin D, Lundin J, Nordenskjöld A, Fossum M. Study on genetic stability in human urothelial cells
in vitro. J Tissue Eng Regen Med 2017; 12:e720-e726. [DOI: 10.1002/term.2354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 09/05/2016] [Accepted: 11/09/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Clara Ibel Chamorro
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
| | - Said Zeiai
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
- Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's HospitalKarolinska University Hospital Stockholm Sweden
| | - Gisela Reinfeldt Engberg
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
- Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's HospitalKarolinska University Hospital Stockholm Sweden
| | - David Brodin
- Department of Biosciences and NutritionKarolinska Institutet Stockholm Sweden
| | - Johanna Lundin
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
| | - Agneta Nordenskjöld
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
- Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's HospitalKarolinska University Hospital Stockholm Sweden
| | - Magdalena Fossum
- Department of Women's and Children's Health and Center for Molecular MedicineKarolinska Institutet Stockholm Sweden
- Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's HospitalKarolinska University Hospital Stockholm Sweden
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23
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Lim IK, Choi JA, Kim EY, Kim BN, Jang S, Ryu MS, Shim SH. TIS21/BTG2 inhibits doxorubicin-induced stress fiber-vimentin networks via Nox4-ROS-ABI2-DRF-linked signal cascade. Cell Signal 2017; 30:179-190. [DOI: 10.1016/j.cellsig.2016.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/11/2016] [Accepted: 12/04/2016] [Indexed: 01/28/2023]
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Abstract
This study re-examined the dying process in the interdigital tissue during the formation of free digits in the developing limbs. We demonstrated that the interdigital dying process was associated with cell senescence, as deduced by induction of β-gal activity, mitotic arrest, and transcriptional up-regulation of p21 together with many components of the senescence-associated secretory phenotype. We also found overlapping domains of expression of members of the Btg/Tob gene family of antiproliferative factors in the regressing interdigits. Notably, Btg2 was up-regulated during interdigit remodeling in species with free digits but not in the webbed foot of the duck. We also demonstrate that oxidative stress promoted the expression of Btg2, and that FGF2 and IGF1 which are survival signals for embryonic limb mesenchyme inhibited Btg2 expression. Btg2 overexpression in vivo and in vitro induced all the observed changes during interdigit regression, including oxidative stress, arrest of cell cycle progression, transcriptional regulation of senescence markers, and caspase-mediated apoptosis. Consistent with the central role of p21 on cell senescence, the transcriptional effects induced by overexpression of Btg2 are attenuated by silencing p21. Our findings indicate that cell senescence and apoptosis are complementary processes in the regression of embryonic tissues and share common regulatory signals.
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25
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Nagano T, Nakano M, Nakashima A, Onishi K, Yamao S, Enari M, Kikkawa U, Kamada S. Identification of cellular senescence-specific genes by comparative transcriptomics. Sci Rep 2016; 6:31758. [PMID: 27545311 PMCID: PMC4992837 DOI: 10.1038/srep31758] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 07/27/2016] [Indexed: 12/12/2022] Open
Abstract
Cellular senescence is defined as permanent cell cycle arrest induced by various stresses. Although the p53 transcriptional activity is essential for senescence induction, the downstream genes that are crucial for senescence remain unsolved. Here, by using a developed experimental system in which cellular senescence or apoptosis is induced preferentially by altering concentration of etoposide, a DNA-damaging drug, we compared gene expression profiles of senescent and apoptotic cells by microarray analysis. Subtraction of the expression profile of apoptotic cells identified 20 genes upregulated specifically in senescent cells. Furthermore, 6 out of 20 genes showed p53-dependent upregulation by comparing gene expression between p53-proficient and -deficient cells. These 6 genes were also upregulated during replicative senescence of normal human diploid fibroblasts, suggesting that upregulation of these genes is a general phenomenon in senescence. Among these genes, 2 genes (PRODH and DAO) were found to be directly regulated by p53, and ectopic expression of 4 genes (PRODH, DAO, EPN3, and GPR172B) affected senescence phenotypes induced by etoposide treatment. Collectively, our results identified several proteins as novel downstream effectors of p53-mediated senescence and provided new clues for further research on the complex signalling networks underlying the induction and maintenance of senescence.
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Affiliation(s)
- Taiki Nagano
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Biology, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Masayuki Nakano
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Biology, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Akio Nakashima
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Kengo Onishi
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Biology, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Shunsuke Yamao
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Biology, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Masato Enari
- Division of Refractory and Advanced Cancer, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Ushio Kikkawa
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Shinji Kamada
- Biosignal Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.,Department of Biology, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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26
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Chen L, Liu J, Tao X, Wang G, Wang Q, Liu X. The role of Pin1 protein in aging of human tendon stem/progenitor cells. Biochem Biophys Res Commun 2015; 464:487-92. [PMID: 26150353 DOI: 10.1016/j.bbrc.2015.06.163] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 06/29/2015] [Indexed: 12/23/2022]
Abstract
Aging of tendon stem/progenitor cells (TSPCs) can lead to tissue degeneration and subsequent injury. However, the molecular mechanisms controlling TSPC aging are not completely understood. In the present study, we investigated the role of Pin1 in aging of human TSPCs. Pin1 mRNA and protein expression levels were significantly decreased during prolonged in vitro culture of human TSPCs. Furthermore, overexpression of Pin1 delayed the progression of cellular senescence, as confirmed by downregulation of senescence-associated β-galactosidase, increased telomerase activity and decreased levels of the senescence marker, p16(INK4A). Conversely, Pin1 siRNA transfection promoted senescence in TSPCs. In addition, miR-140-5p regulated Pin1 expression at the translational level via directly targeting its 3'UTR. Our results collectively demonstrate that Pin1 acts as an important regulator of TSPC aging.
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Affiliation(s)
- Lei Chen
- Department of Orthopaedics Surgery, Wuhan General Hospital of Guangzhou Command, Wuhan, China
| | - Junpeng Liu
- Department of Orthopaedics Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xu Tao
- Department of Orthopaedics Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Guodong Wang
- Department of Orthopaedics Surgery, Wuhan General Hospital of Guangzhou Command, Wuhan, China
| | - Qing Wang
- Department of Orthopaedics Surgery, Wuhan General Hospital of Guangzhou Command, Wuhan, China.
| | - Ximing Liu
- Department of Orthopaedics Surgery, Wuhan General Hospital of Guangzhou Command, Wuhan, China.
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27
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Chamorro CI, Zeiai S, Reinfeldt Engberg G, Brodin D, Nordenskjöld A, Fossum M. A Study on Proliferation and Gene Expression in Normal Human Urothelial Cells in Culture. Tissue Eng Part A 2015; 21:510-7. [DOI: 10.1089/ten.tea.2014.0175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Clara Ibel Chamorro
- Department of Women's and Children's Health, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Said Zeiai
- Department of Women's and Children's Health, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Urology Section, Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Gisela Reinfeldt Engberg
- Department of Women's and Children's Health, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Urology Section, Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - David Brodin
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Agneta Nordenskjöld
- Department of Women's and Children's Health, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Urology Section, Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Magdalena Fossum
- Department of Women's and Children's Health, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Urology Section, Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
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28
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Mantovani F, Zannini A, Rustighi A, Del Sal G. Interaction of p53 with prolyl isomerases: Healthy and unhealthy relationships. Biochim Biophys Acta Gen Subj 2015; 1850:2048-60. [PMID: 25641576 DOI: 10.1016/j.bbagen.2015.01.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 01/17/2015] [Accepted: 01/19/2015] [Indexed: 01/11/2023]
Abstract
BACKGROUND The p53 protein family, comprising p53, p63 and p73, is primarily involved in preserving genome integrity and preventing tumor onset, and also affects a range of physiological processes. Signal-dependent modifications of its members and of other pathway components provide cells with a sophisticated code to transduce a variety of stress signaling into appropriate responses. TP53 mutations are highly frequent in cancer and lead to the expression of mutant p53 proteins that are endowed with oncogenic activities and sensitive to stress signaling. SCOPE OF REVIEW p53 family proteins have unique structural and functional plasticity, and here we discuss the relevance of prolyl-isomerization to actively shape these features. MAJOR CONCLUSIONS The anti-proliferative functions of the p53 family are carefully activated upon severe stress and this involves the interaction with prolyl-isomerases. In particular, stress-induced stabilization of p53, activation of its transcriptional control over arrest- and cell death-related target genes and of its mitochondrial apoptotic function, as well as certain p63 and p73 functions, all require phosphorylation of specific S/T-P motifs and their subsequent isomerization by the prolyl-isomerase Pin1. While these functions of p53 counteract tumorigenesis, under some circumstances their activation by prolyl-isomerases may have negative repercussions (e.g. tissue damage induced by anticancer therapies and ischemia-reperfusion, neurodegeneration). Moreover, elevated Pin1 levels in tumor cells may transduce deregulated phosphorylation signaling into activation of mutant p53 oncogenic functions. GENERAL SIGNIFICANCE The complex repertoire of biological outcomes induced by p53 finds mechanistic explanations, at least in part, in the association between prolyl-isomerases and the p53 pathway. This article is part of a Special Issue entitled Proline-directed foldases: Cell signaling catalysts and drug targets.
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Affiliation(s)
- Fiamma Mantovani
- Laboratorio Nazionale CIB (LNCIB), Area Science Park, Trieste, Italy; Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Alessandro Zannini
- Laboratorio Nazionale CIB (LNCIB), Area Science Park, Trieste, Italy; Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Alessandra Rustighi
- Laboratorio Nazionale CIB (LNCIB), Area Science Park, Trieste, Italy; Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Giannino Del Sal
- Laboratorio Nazionale CIB (LNCIB), Area Science Park, Trieste, Italy; Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy.
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29
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Toko H, Hariharan N, Konstandin MH, Ormachea L, McGregor M, Gude NA, Sundararaman B, Joyo E, Joyo AY, Collins B, Din S, Mohsin S, Uchida T, Sussman MA. Differential regulation of cellular senescence and differentiation by prolyl isomerase Pin1 in cardiac progenitor cells. J Biol Chem 2013; 289:5348-56. [PMID: 24375406 DOI: 10.1074/jbc.m113.526442] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Autologous c-kit(+) cardiac progenitor cells (CPCs) are currently used in the clinic to treat heart disease. CPC-based regeneration may be further augmented by better understanding molecular mechanisms of endogenous cardiac repair and enhancement of pro-survival signaling pathways that antagonize senescence while also increasing differentiation. The prolyl isomerase Pin1 regulates multiple signaling cascades by modulating protein folding and thereby activity and stability of phosphoproteins. In this study, we examine the heretofore unexplored role of Pin1 in CPCs. Pin1 is expressed in CPCs in vitro and in vivo and is associated with increased proliferation. Pin1 is required for cell cycle progression and loss of Pin1 causes cell cycle arrest in the G1 phase in CPCs, concomitantly associated with decreased expression of Cyclins D and B and increased expression of cell cycle inhibitors p53 and retinoblastoma (Rb). Pin1 deletion increases cellular senescence but not differentiation or cell death of CPCs. Pin1 is required for endogenous CPC response as Pin1 knock-out mice have a reduced number of proliferating CPCs after ischemic challenge. Pin1 overexpression also impairs proliferation and causes G2/M phase cell cycle arrest with concurrent down-regulation of Cyclin B, p53, and Rb. Additionally, Pin1 overexpression inhibits replicative senescence, increases differentiation, and inhibits cell death of CPCs, indicating that cell cycle arrest caused by Pin1 overexpression is a consequence of differentiation and not senescence or cell death. In conclusion, Pin1 has pleiotropic roles in CPCs and may be a molecular target to promote survival, enhance repair, improve differentiation, and antagonize senescence.
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Affiliation(s)
- Haruhiro Toko
- From the San Diego State University Heart Institute and Biology Department, San Diego State University, San Diego, California 92182 and
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30
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Choi YW, Park TJ, Kim HS, Lim IK. Signals regulating necrosis of cardiomyoblast by BTG2(/TIS21/PC3) via activation of GSK3β and opening of mitochondrial permeability transition pore in response to H2O2. Biochem Biophys Res Commun 2013; 434:559-65. [PMID: 23583382 DOI: 10.1016/j.bbrc.2013.03.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 03/23/2013] [Indexed: 01/24/2023]
Abstract
To investigate signal transduction pathway of cell death regulated by a tumor suppressor after oxidative stress, cardiomyoblasts were virally transfected with BTG2(/TIS21/PC3) (BTG2) and subsequently treated with H2O2. Heart muscle rarely expresses BTG2 unless oxidative stress occurs, however, ischemia induced BTG2 expression and necrosis, not apoptosis, of cardiomyoblasts. BTG2-expressioning cardiomyblasts showed impaired recoveries of survival kinases, Akt and Erk, thus sustaining GSK-3β activity in 30 min of H2O2 exposure, in contrast to their rapid recoveries in LacZ control. The phenomenon was accompanied by the failure of ATP regeneration and the sustained activation of AMPK in the BTG2 expresser. Furthermore, H2O2 treatment markedly induced BTG2 translocation from nuclei to mitochondria along with cell death by cyclophilin D activation and mPTP opening. Exogenous and endogenous effect of BTG2 was confirmed by chemical inhibitors and BTG2-KO-MEF, respectively. Here, we suggest tumor suppressor, BTG2, as one of the regulators of necrosis in myocardium via inhibiting Akt/Erk, but activating GSK3β and cyclophilin D, which resulted in mPTP opening in response to H2O2.
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Affiliation(s)
- Yong Won Choi
- Department of Biochemistry and Molecular Biology, BK21 Cell Transformation and Restoration Project, Ajou University School of Medicine, Suwon 443-721, Republic of Korea
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Abstract
p53, a guardian of the genome, exerts its tumor suppression activity by regulating a large number of downstream targets involved in cell cycle arrest, DNA repair, apoptosis, and cellular senescence. Although p53-mediated apoptosis is able to kill cancer cells, a role for cellular senescence in p53-dependent tumor suppression is becoming clear. Mouse studies showed that activation of p53-induced premature senescence promotes tumor regression in vivo. However, p53-mediated cellular senescence also leads to aging-related phenotypes, such as tissue atrophy, stem cell depletion, and impaired wound healing. In addition, several p53 isoforms and two p53 homologs, p63 and p73, have been shown to play a role in cellular senescence and/or aging. Importantly, p53, p63, and p73 are necessary for the maintenance of adult stem cells. Therefore, understanding the dual role the p53 protein family in cancer and aging is critical to solve cancer and longevity in the future. In this chapter, we provide an overview on how p53, p63, p73, and their isoforms regulate cellular senescence and aging.
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32
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Karve TM, Rosen EM. B-cell translocation gene 2 (BTG2) stimulates cellular antioxidant defenses through the antioxidant transcription factor NFE2L2 in human mammary epithelial cells. J Biol Chem 2012; 287:31503-14. [PMID: 22493435 DOI: 10.1074/jbc.m112.367433] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The B-cell translocation gene 2, BTG2, a member of the BTG/TOB (B-cell translocation gene/transducers of ErbB2) gene family, has been implicated in cell cycle regulation, normal development, and possibly tumor suppression. Previously, it was shown that BTG2 expression is lost or down-regulated in human breast cancers. We now report that BTG2 protects human mammary epithelial cells from oxidative stress due to hydrogen peroxide and other oxidants. BTG2 protection against oxidative stress is BRCA1-independent but requires the antioxidant transcription factor NFE2L2 and is associated with up-regulation of the expression of antioxidant enzymes, including catalase and superoxide dismutases 1 and 2. BTG2 stimulation of antioxidant gene expression is also NFE2L2-dependent. We further demonstrate that BTG2 is a binding partner for NFE2L2 and increases its transcriptional activity. In addition, BTG2 is detectable at the antioxidant response element (ARE) of several NFE2L2-responsive genes. Finally, we show that the ability of BTG2 to associate with NFE2L2, to protect cells against oxidative stress, and to stimulate antioxidant gene expression requires box B, a short highly conserved amino acid motif characteristic of BTG2/TOB family proteins, but does not require boxes A or C. These findings suggest a novel role for BTG2 as a co-activator for NFE2L2 in up-regulating cellular antioxidant defenses.
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Affiliation(s)
- Tejaswita M Karve
- Department of Biochemistry and Cellular and Molecular Biology, Georgetown University School of Medicine, Washington, DC 20057, USA
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33
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Assaily W, Rubinger DA, Wheaton K, Lin Y, Ma W, Xuan W, Brown-Endres L, Tsuchihara K, Mak TW, Benchimol S. ROS-mediated p53 induction of Lpin1 regulates fatty acid oxidation in response to nutritional stress. Mol Cell 2011; 44:491-501. [PMID: 22055193 DOI: 10.1016/j.molcel.2011.08.038] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 01/27/2011] [Accepted: 08/15/2011] [Indexed: 01/01/2023]
Abstract
The p53 protein is activated by stress signals and exhibits both protective and death-promoting functions that are considered important for its tumor suppressor function. Emerging evidence points toward an additional role for p53 in metabolism. Here, we identify Lpin1 as a p53-responsive gene that is induced in response to DNA damage and glucose deprivation. Lpin1 is essential for adipocyte development and fat metabolism, and mutation in this gene is responsible for the lypodystrophy phenotype in fld mice. We show that p53 and Lpin1 regulate fatty acid oxidation in mouse C2C12 myoblasts. p53 phosphorylation on Ser18 in response to low glucose is ROS and ATM dependent. Lpin1 expression in response to nutritional stress is controlled through the ROS-ATM-p53 pathway and is conserved in human cells. Lpin1 provides a critical link between p53 and metabolism that may be an important component in mediating the tumor suppressor function of p53.
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Affiliation(s)
- Wissam Assaily
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
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