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Ren F, Zhu K, Wang Y, Zhou F, Pang S, Chen L. Proliferation, apoptosis and invasion of human lung cancer cells are associated with NFATc1. Exp Ther Med 2022; 25:49. [PMID: 36588811 PMCID: PMC9780516 DOI: 10.3892/etm.2022.11748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/31/2022] [Indexed: 12/12/2022] Open
Abstract
The expression of nuclear factor of activated T cells c1 (NFATc1) is closely associated with the progression of numerous types of cancer. When NFATc1 expression becomes dysregulated in some types of cancer, this alteration can promote malignant transformation and thereby progression of cancer. NFATc1 expression has been demonstrated to be upregulated in lung cancer cells. This suggests that knockdown of NFATc1 in lung cancer cells may be a therapeutic marker for the treatment of cancer. In the present study, the effects of NFATc1 on the proliferation, apoptosis, invasion and migration of NCI-H1299 and A549 lung cancer cell lines were explored. Lentivirus infection was used to establish a cell model of NFATc1 knockdown in A549 and NCI-H1299 lung cancer cells. Reverse transcription-quantitative PCR was subsequently performed to detect NFATc1 expression in these human lung cancer cells. MTT, wound healing, colony formation and Transwell invasion assays, and flow cytometry were then performed to measure the proliferation, invasion, apoptosis and cell cycle of the cells. Finally, western blot analysis was performed to investigate the mechanism underlying the involvement of NFATc1 in these processes. NFATc1 knockdown was found to significantly inhibit the proliferation, clone formation, migration and invasion of the cells. Furthermore, the cell cycle was arrested at the G1 phase and the expression levels of the target proteins located downstream in the signaling pathway, namely CDK4, c-Myc, ERK, p38 and N-cadherin, were decreased. Following NFATc1 knockdown, the percentages of apoptotic cells were increased, and the expression levels of Bax, cleaved caspase-3 and E-cadherin were also increased. Taken together, the results of the present study suggested that NFATc1 serves an oncogenic role in lung cancer. In terms of the underlying mechanism, NFATc1 promoted the proliferation of lung cancer cells by inhibiting the MAPK and epithelial-to-mesenchymal transition signaling pathways, suggesting that NFATc1 may be a novel target for therapeutic intervention for the treatment of lung cancer.
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Affiliation(s)
- Fenghai Ren
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Kaibin Zhu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Yanbo Wang
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Fucheng Zhou
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Sainan Pang
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Lantao Chen
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China,Correspondence to: Dr Lantao Chen, Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, Heilongjiang 150081, P.R. China
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Feliz Morel ÁJ, Hasanovic A, Morin A, Prunier C, Magnone V, Lebrigand K, Aouad A, Cogoluegnes S, Favier J, Pasquier C, Mus-Veteau I. Persistent Properties of a Subpopulation of Cancer Cells Overexpressing the Hedgehog Receptor Patched. Pharmaceutics 2022; 14:pharmaceutics14050988. [PMID: 35631574 PMCID: PMC9146430 DOI: 10.3390/pharmaceutics14050988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/22/2022] [Accepted: 04/29/2022] [Indexed: 02/01/2023] Open
Abstract
Despite the development of new therapeutic strategies, cancer remains one of the leading causes of mortality worldwide. One of the current major challenges is the resistance of cancers to chemotherapy treatments inducing metastases and relapse of the tumor. The Hedgehog receptor Patched (Ptch1) is overexpressed in many types of cancers. We showed that Ptch1 contributes to the efflux of doxorubicin and plays an important role in the resistance to chemotherapy in adrenocortical carcinoma (ACC), a rare cancer which presents strong resistance to the standard of care chemotherapy treatment. In the present study, we isolated and characterized a subpopulation of the ACC cell line H295R in which Ptch1 is overexpressed and more present at the cell surface. This cell subpopulation is more resistant to doxorubicin, grows as spheroids, and has a greater capability of clonogenicity, migration, and invasion than the parental cells. Xenograft experiments performed in mice and in ovo showed that this cell subpopulation is more tumorigenic and metastatic than the parental cells. These results suggest that this cell subpopulation has cancer stem-like or persistent cell properties which were strengthened by RNA-seq. If present in tumors from ACC patients, these cells could be responsible for therapy resistance, relapse, and metastases.
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Affiliation(s)
- Álvaro Javier Feliz Morel
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Anida Hasanovic
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Aurélie Morin
- Université de Paris, PARCC, INSERM, Equipe Labellisée par la Ligue Contre le Cancer, CEDEX 15, 75737 Paris, France; (A.M.); (J.F.)
| | - Chloé Prunier
- INOVOTION, Biopolis-5 Av. du Grand Sablon, 38700 La Tronche, France;
| | - Virginie Magnone
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Kevin Lebrigand
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Amaury Aouad
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Sarah Cogoluegnes
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
| | - Judith Favier
- Université de Paris, PARCC, INSERM, Equipe Labellisée par la Ligue Contre le Cancer, CEDEX 15, 75737 Paris, France; (A.M.); (J.F.)
| | - Claude Pasquier
- Université Côte d’Azur, CNRS-UMR7271, Laboratoire d’Informatique, Signaux et Systèmes de Sophia Antipolis (I3S), 06560 Valbonne, France;
| | - Isabelle Mus-Veteau
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), 06560 Valbonne, France; (Á.J.F.M.); (A.H.); (V.M.); (K.L.); (A.A.); (S.C.)
- Correspondence:
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Tan J, Yang L, Zhao H, Ai Y, Ren L, Zhang F, Dong W, Shi R, Sun D, Feng Y. The role of NFATc1/c-myc/PKM2/IL-10 axis in activating cervical cancer tumor-associated M2 macrophage polarization to promote cervical cancer progression. Exp Cell Res 2022; 413:113052. [PMID: 35122827 DOI: 10.1016/j.yexcr.2022.113052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 12/20/2022]
Abstract
Nuclear factor of activated T cells 1 (NFATc1) is mainly expressed in tumor microenvironment, especially in macrophages. However, whether NFATc1 is involved in the polarization of tumor associated macrophages (TAMs) and tumor progression in cervical cancer (CC) remains unclear. Immunofluorescence staining was used to detect the expression of CD68 and NFATc1 in CC tissues or adjacent normal tissues of patients. RT-qPCR, flow cytometry, ELISA, and inhibitors treatment were used to observe the effect of NFATc1 on TAMs polarization. Clonal formation, scratch, and transwell assays were used to examine the effects of NFATc1-transfected macrophages or NFATc1-transfected TAM on tumor proliferation, migration, and invasion. Further, a xenograft model was established to confirm the roles of NFATc1+ TAM in CC tumorigenesis. NFATc1+CD68+/CD68+ TAMs ratio was significantly increased in CC tissues compared with the normal tissue, and NFATc1+ TAM showed an M2-like TAM subtype. NFATc1 induced macrophages to secrete IL-10, which further induced M2 polarization of macrophages. Mechanically, the c-myc-PKM2 pathway mediated the expression of IL-10 in NFATc1-induced macrophages. Functionally, NFATc1 induced M2 macrophages promoted the proliferation, migration, and invasion of CC cells, and the knockout of NFATc1 in TAMs significantly inhibited the tumor-promoting function of TAMs. Further, the tumorigenesis test in nude mice confirmed that NFATc1+ TAM promoted the tumorigenicity of CC cells in vivo. In conclusion, NFATc1 mediated IL-10 secretion by regulating the c-myc/PKM2 pathway, thereby induce M2 polarization of TAMs and promote the progression of CC.
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Affiliation(s)
- Jiahong Tan
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Linna Yang
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Han Zhao
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Ying Ai
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Li Ren
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Fen Zhang
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Wei Dong
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Ru Shi
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China; Dali University, Dali, 671000, Yunnan, China
| | - Dawei Sun
- Department of Gynaecology and Obstetrics, Peking Union Medical College Hospital, Beijing, 100730, China.
| | - Yun Feng
- Department of Gynaecology and Obstetrics, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China.
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Zhou L, Xie X. RNA-binding protein CELF2 inhibits breast cancer cell invasion and angiogenesis by downregulating NFATc1. Exp Ther Med 2021; 22:898. [PMID: 34257711 PMCID: PMC8243341 DOI: 10.3892/etm.2021.10330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 05/24/2021] [Indexed: 12/16/2022] Open
Abstract
Breast cancer constitutes a major cause of morbidity and mortality among women in China and worldwide. The aim of the present study was to investigate whether CUGBP Elav-like family member 2 (CELF2) could inhibit breast cancer cell invasion and angiogenesis by downregulating nuclear factor of activated T cells 1 (NFATc1) expression. The expression of CELF2 and NFATc1 in breast cancer cells and tissues was detected by reverse transcription-quantitative PCR analysis. H&E staining was used to assess the number of microvessels in tumor tissue. The expression of proteins associated with invasion and angiogenesis and NFATc1 in tumor tissues and transfected cells was examined by western blotting. RNA pull-down assay was used to verify the interaction between CELF2 and NFATc1. Cell proliferation, invasion and tube-forming ability was analyzed using Cell Counting Kit-8, Transwell and HUVEC tube formation assays, respectively. CELF2 expression was found to be decreased in breast cancer cells, whereas CELF2 overexpression suppressed the proliferation and invasion of breast cancer cells and inhibited tumor growth and angiogenesis. Furthermore, CELF2 overexpression decreased the expression of N-cadherin (N-cad), CD34 and NFATc1 in tumor tissues, whereas NEAFc1 overexpression increased the expression of N-cad and NFATc1 in MCF cells transfected with OverExp-CELF2. CELF2 was found to be inversely associated with NFATc1, and NFATc1 overexpression reversed the effects of CELF2 overexpression. In conclusion, the findings of the present study demonstrated that CELF2 may inhibit breast cancer cell invasion and angiogenesis by downregulating NFATc1.
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Affiliation(s)
- Limin Zhou
- Department of The Second Section Office of Breast Tumor, Jilin Cancer Hospital, Changchun, Jilin 130000, P.R. China
| | - Xiju Xie
- Department of Breast Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Dai ZT, Xiang Y, Wang Y, Bao LY, Wang J, Li JP, Zhang HM, Lu Z, Ponnambalam S, Liao XH. Prognostic value of members of NFAT family for pan-cancer and a prediction model based on NFAT2 in bladder cancer. Aging (Albany NY) 2021; 13:13876-13897. [PMID: 33962392 PMCID: PMC8202856 DOI: 10.18632/aging.202982] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 03/26/2021] [Indexed: 04/23/2023]
Abstract
Bladder cancer (BLCA) is one of the common malignant tumors of the urinary system. The poor prognosis of BLCA patients is due to the lack of early diagnosis and disease recurrence after treatment. Increasing evidence suggests that gene products of the nuclear factor of activated T-cells (NFAT) family are involved in BLCA progression and subsequent interaction(s) with immune surveillance. In this study, we carried out a pan-cancer analysis of the NFAT family and found that NFAT2 is an independent prognostic factor for BLCA. We then screened for differentially expressed genes (DEGs) and further analyzed such candidate gene loci using gene ontology enrichment to curate the KEGG database. We then used Lasso and multivariate Cox regression to identify 4 gene loci (FER1L4, RNF128, EPHB6, and FN1) which were screened together with NFAT2 to construct a prognostic model based on using Kaplan-Meier analysis to predict the overall survival of BLCA patients. Moreover, the accuracy of our proposed model is supported by deposited datasets in the Gene Expression Omnibus (GEO) database. Finally, a nomogram of this prognosis model for BLCA was established which could help to provide better disease management and treatment.
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Affiliation(s)
- Zhou-Tong Dai
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Yuan Xiang
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
- Department of Medical Laboratory, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei, P.R. China
| | - Yundan Wang
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Le-Yuan Bao
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Jun Wang
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Jia-Peng Li
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Hui-Min Zhang
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
| | - Zhongxin Lu
- Department of Medical Laboratory, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei, P.R. China
| | - Sreenivasan Ponnambalam
- School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Xing-Hua Liao
- Institute of Biology and Medicine, College of Life and Health Sciences, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China
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Zhang K, Wang W, Chen L, Liu Y, Hu J, Guo F, Tian W, Wang Y, Xue F. Cross‑validation of genes potentially associated with neoadjuvant chemotherapy and platinum‑based chemoresistance in epithelial ovarian carcinoma. Oncol Rep 2020; 44:909-926. [PMID: 32705213 PMCID: PMC7388274 DOI: 10.3892/or.2020.7668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 05/14/2020] [Indexed: 02/07/2023] Open
Abstract
Ovarian carcinomas have the poorest prognosis and the highest mortality among gynecological malignancies. Neoadjuvant chemotherapy (NACT) is considered as a novel therapeutic strategy and an alternative treatment for advanced epithelial ovarian cancer (AEOC). The aim of the present study was to identify the core genes related to platinum‑based NACT resistance in AEOC and to allow screening at the molecular level for the most appropriate ovarian cancer patients for NACT. We obtained three drug‑resistant microarrays GSE114206, GSE41499 and GSE33482 from the Gene Expression Omnibus (GEO) database as well as a microarray representing NACT, GSE109934. Bioinformatics analysis revealed the nature of the four potential candidate genes for using in functional enrichment analyses and interaction network construction. The potential associations and possible genetic alterations among the DEGs were summarized using the STRING database in Cytoscape and the cBioPortal visualization tool, respectively. A total of 63 genes were identified as DEGs from GSE109934 representing NACT. From the drug‑resistant GSE114206 and GSE41499 datasets, 106 DEGs containing 36 upregulated genes and 70 downregulated genes were selected, and from the drug‑resistant GSE114206 and GSE33482 datasets, 406 DEGs with 157 upregulated genes and 249 downregulated genes were selected. The 36 upregulated DEGs and the 70 downregulated genes were notably abundant in the different categories. In KEGG pathway analysis, the 157 upregulated genes and the 249 downregulated genes were concentrated in distinctive signaling pathways. Four potential genes associated with NACT and platinum‑based chemoresistance were screened, including nuclear factor of activated T‑cells, cytoplasmic 1 (NAFTc1), Kruppel‑like factor 4 (KLF4), nuclear receptor subfamily 4 group A member 3 (NR4A3) and hepatocyte growth factor (HGF). Our study showed that the mRNA expression levels of NAFTc1, NR4A3 and HGF were increased in drug‑resistant OC cell lines (all P<0.01), whereas the mRNA expression levels of KLF4 were notably lower in the SKOV3‑CDDP and HeyA8‑CDDP cell line (all P<0.01) but higher in the A2780‑CBP cell line. The NAFTc1, KLF4, NR4A3 and HGF genes may be potential therapeutic targets for NACT and platinum‑based chemoresistance factors as well as candidate biomarkers in AEOC. Determination of the expression levels of these four genes in tumor tissues before planning NACT treatment or initial surgery would be beneficial for AEOC patients.
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Affiliation(s)
- Kai Zhang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Weihan Wang
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro‑Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Lingli Chen
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yulin Liu
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Jiali Hu
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Fei Guo
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Wenyan Tian
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yingmei Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Fengxia Xue
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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Zhang W, Sun Q, Jia L, Li M. Ketamine exerts a protective role in a cell-based model of major depressive disorder via the inhibition of apoptosis and inflammation and activation of the Krebs cycle. Bosn J Basic Med Sci 2020; 20:44-55. [PMID: 31215856 PMCID: PMC7029208 DOI: 10.17305/bjbms.2019.4222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/13/2019] [Indexed: 11/26/2022] Open
Abstract
Major depressive disorder (MDD) is one of the most common psychiatric disorders characterized by major depressive episodes. Although great efforts have been made to develop antidepressant drugs that target the monoaminergic system, these drugs are effective in only approximately 50% of MDD patients. In this study, we established a model of depression in PC12 cells using corticosterone to investigate the effect of ketamine and nuclear factor-κB (NF-κB) on the cell viability, apoptosis, levels of pro-inflammatory cytokines, apoptosis-related molecules, and enzymes of the Krebs cycle. PC12 cells were divided into control (no treatment, NC), ketamine treatment (KT), ketamine treatment with the inhibition of NF-κB (KI), and ketamine treatment with the overexpression of NF-κB (KO) group. Blood serum samples were collected from patients with MDD (n = 10) and healthy controls (n = 10) between 2015 and 2017. Ketamine significantly increased the viability and decreased the apoptosis of PC12 cells in KT and KI vs. NC group, but not in KO group. The levels of anti-apoptotic molecules and Krebs cycle enzymes were significantly increased in KI vs. KT group, while the levels of pro-apoptotic molecules and pro-inflammatory cytokines were decreased in KI vs. KT group. In addition, the levels of pro-inflammatory cytokines in the serum of MDD patients were significantly increased. The antidepressant effect of ketamine was enhanced in KI and reduced in KO group. Our results indicate that ketamine exerts its antidepressant effect via the inhibition of apoptosis and inflammation and the activation of the Krebs cycle in PC12 cells. NF-κB might be a potential therapeutic target in MDD.
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Affiliation(s)
- Wenfei Zhang
- Psychological Outpatient Department, Dezhou People's Hospital, Dezhou, China.
| | - Qian Sun
- Department of Pharmacy, Dezhou People's Hospital, Dezhou, China.
| | - Lingling Jia
- Department of Pharmacy, Dezhou People's Hospital, Dezhou, China.
| | - Ming Li
- Department of Orthopedics, Dezhou People's Hospital, Dezhou, China.
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He W, Lu J. MiR-338 regulates NFATc1 expression and inhibits the proliferation and epithelial-mesenchymal transition of human non-small-cell lung cancer cells. Mol Genet Genomic Med 2019; 8:e1091. [PMID: 31823518 PMCID: PMC7005663 DOI: 10.1002/mgg3.1091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 11/01/2019] [Accepted: 11/05/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND It is well known that nuclear factor of activated T cells c1 (NFATc1) expression is closely associated with progression of many cancers. And we found that miR-338 could directly target the NFATc1. However, the precise mechanisms of miR-338 in non-small-cell lung cancer (NSCLC) have not been well clarified. Our study aimed to explore the interaction between NFATc1 and miR-338 in NSCLC. METHODS Quantitative RT-PCR was utilized to determine the expressions of NFATc1 and miR-338 in NSCLC tissues and cell lines. And the cell proliferation and epithelial-mesenchymal transition (EMT) were assessed to determine the functional roles of miR-338 and NFATc1 in NSCLC cells. NFATc1 expression was detected using quantitative RT-PCR and western blotting, respectively. Luciferase reporter assays were performed to validate NFATc1 as a target of miR-338 in NSCLC cells. RESULTS In this study, our results showed that NFATc1 expression was significantly up-regulated in NSCLC tissues and cell lines, and the miR-338 level was dramatically down-regulated. Moreover high NFATc1 expression was closely associated with low miR-338 level in NSCLC tissues. Moreover introduction of miR-338 significantly inhibited proliferation and EMT of NSCLC cells. Bioinformatics analysis predicted that the NFATc1 was a potential target gene of miR-338. We demonstrated that miR-338 could directly target NFATc1 by using luciferase reporter assay. Besides, knockdown of NFATc1 had the similar effects with miR-338 overexpression on NSCLC cells. Up-regulation of NFATc1 in NSCLC cells partially abolished the inhibitory effects of miR-338 mimic. CONCLUSIONS Overexpression of miR-338 inhibited cell proliferation and EMT of NSCLC cells by directly down-regulating NFATc1 expression.
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Affiliation(s)
- Wei He
- Second Thoracic Surgery Ward, Shengjing Hospital Affiliated to China Medical University, Liaoning, People's Republic of China
| | - Jibin Lu
- First Thoracic Surgery Ward, Shengjing Hospital Affiliated to China Medical University, Liaoning, People's Republic of China
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Eerola SK, Santio NM, Rinne S, Kouvonen P, Corthals GL, Scaravilli M, Scala G, Serra A, Greco D, Ruusuvuori P, Latonen L, Rainio EM, Visakorpi T, Koskinen PJ. Phosphorylation of NFATC1 at PIM1 target sites is essential for its ability to promote prostate cancer cell migration and invasion. Cell Commun Signal 2019; 17:148. [PMID: 31730483 PMCID: PMC6858710 DOI: 10.1186/s12964-019-0463-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/22/2019] [Indexed: 12/11/2022] Open
Abstract
Background Progression of prostate cancer from benign local tumors to metastatic carcinomas is a multistep process. Here we have investigated the signaling pathways that support migration and invasion of prostate cancer cells, focusing on the role of the NFATC1 transcription factor and its post-translational modifications. We have previously identified NFATC1 as a substrate for the PIM1 kinase and shown that PIM1-dependent phosphorylation increases NFATC1 activity without affecting its subcellular localization. Both PIM kinases and NFATC1 have been reported to promote cancer cell migration, invasion and angiogenesis, but it has remained unclear whether the effects of NFATC1 are phosphorylation-dependent and which downstream targets are involved. Methods We used mass spectrometry to identify PIM1 phosphorylation target sites in NFATC1, and analysed their functional roles in three prostate cancer cell lines by comparing phosphodeficient mutants to wild-type NFATC1. We used luciferase assays to determine effects of phosphorylation on NFAT-dependent transcriptional activity, and migration and invasion assays to evaluate effects on cell motility. We also performed a microarray analysis to identify novel PIM1/NFATC1 targets, and validated one of them with both cellular expression analyses and in silico in clinical prostate cancer data sets. Results Here we have identified ten PIM1 target sites in NFATC1 and found that prevention of their phosphorylation significantly decreases the transcriptional activity as well as the pro-migratory and pro-invasive effects of NFATC1 in prostate cancer cells. We observed that also PIM2 and PIM3 can phosphorylate NFATC1, and identified several novel putative PIM1/NFATC1 target genes. These include the ITGA5 integrin, which is differentially expressed in the presence of wild-type versus phosphorylation-deficient NFATC1, and which is coexpressed with PIM1 and NFATC1 in clinical prostate cancer specimens. Conclusions Based on our data, phosphorylation of PIM1 target sites stimulates NFATC1 activity and enhances its ability to promote prostate cancer cell migration and invasion. Therefore, inhibition of the interplay between PIM kinases and NFATC1 may have therapeutic implications for patients with metastatic forms of cancer. Graphical abstract ![]()
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Affiliation(s)
- Sini K Eerola
- Department of Biology, University of Turku, Vesilinnantie 5, FI-20500, Turku, Finland.,Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Niina M Santio
- Department of Biology, University of Turku, Vesilinnantie 5, FI-20500, Turku, Finland
| | - Sanni Rinne
- Department of Biology, University of Turku, Vesilinnantie 5, FI-20500, Turku, Finland
| | - Petri Kouvonen
- Turku Centre for Biotechnology, University of Turku, Turku, Finland
| | - Garry L Corthals
- Turku Centre for Biotechnology, University of Turku, Turku, Finland
| | - Mauro Scaravilli
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Giovanni Scala
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,University of Helsinki, Helsinki, Finland
| | - Angela Serra
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland
| | - Dario Greco
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,University of Helsinki, Helsinki, Finland
| | - Pekka Ruusuvuori
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,Signal processing laboratory, Tampere University of Technology, Pori, Finland
| | - Leena Latonen
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Eeva-Marja Rainio
- Department of Biology, University of Turku, Vesilinnantie 5, FI-20500, Turku, Finland
| | - Tapio Visakorpi
- Faculty of Medicine and Health Technology, Tampere University and Tays Cancer Center, Tampere University Hospital, Tampere, Finland.,Fimlab Laboratories, Tampere, Finland
| | - Päivi J Koskinen
- Department of Biology, University of Turku, Vesilinnantie 5, FI-20500, Turku, Finland.
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10
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Amirhosseini M, Bernhardsson M, Lång P, Andersson G, Flygare J, Fahlgren A. Cyclin-dependent kinase 8/19 inhibition suppresses osteoclastogenesis by downregulating RANK and promotes osteoblast mineralization and cancellous bone healing. J Cell Physiol 2019; 234:16503-16516. [PMID: 30793301 DOI: 10.1002/jcp.28321] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 01/24/2023]
Abstract
Cyclin-dependent kinase 8 (CDK8) is a mediator complex-associated transcriptional regulator that acts depending on context and cell type. While primarily under investigation as potential cancer therapeutics, some inhibitors of CDK8-and its paralog CDK19-have been reported to affect the osteoblast lineage and bone formation. This study investigated the effects of two selective CDK8/19 inhibitors on osteoclastogenesis and osteoblasts in vitro, and further evaluated how local treatment with a CDK8/19 inhibitor affects cancellous bone healing in rats. CDK8/19 inhibitors did not alter the proliferation of neither mouse bone marrow-derived macrophages (BMMs) nor primary mouse osteoblasts. Receptor activator of nuclear factor κΒ (NF-κB) ligand (RANKL)-induced osteoclastogenesis from mouse BMMs was suppressed markedly by inhibition of CDK8/19, concomitant with reduced tartrate-resistant acid phosphatase (TRAP) activity and C-terminal telopeptide of type I collagen levels. This was accompanied by downregulation of PU.1, RANK, NF-κB, nuclear factor of activated T-cells 1 (NFATc1), dendritic cell-specific transmembrane protein (DC-STAMP), TRAP, and cathepsin K in RANKL-stimulated BMMs. Downregulating RANK and its downstream signaling in osteoclast precursors enforce CDK8/19 inhibitors as anticatabolic agents to impede excessive osteoclastogenesis. In mouse primary osteoblasts, CDK8/19 inhibition did not affect differentiation but enhanced osteoblast mineralization by promoting alkaline phosphatase activity and downregulating osteopontin, a negative regulator of mineralization. In rat tibiae, a CDK8/19 inhibitor administered locally promoted cancellous bone regeneration. Our data indicate that inhibitors of CDK8/19 have the potential to develop into therapeutics to restrict osteolysis and enhance bone regeneration.
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Affiliation(s)
- Mehdi Amirhosseini
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Magnus Bernhardsson
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Pernilla Lång
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
| | - Göran Andersson
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
| | - Johan Flygare
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Anna Fahlgren
- Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
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11
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Misawa K, Kanazawa T, Mochizuki D, Imai A, Mima M, Yamada S, Morita K, Misawa Y, Shinmura K, Mineta H. Genes Located on 18q23 Are Epigenetic Markers and Have Prognostic Significance for Patients with Head and Neck Cancer. Cancers (Basel) 2019; 11:cancers11030401. [PMID: 30901947 PMCID: PMC6468360 DOI: 10.3390/cancers11030401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 02/28/2019] [Accepted: 03/18/2019] [Indexed: 01/30/2023] Open
Abstract
Loss of heterozygosity (LOH) on chromosome 18q23 is associated with significantly decreased survival in head and neck cancer. In agreement with such tumor suppressive roles, the loss of function of genes located in this region can be achieved through LOH and promotor hypermethylation. In this study, the methylation status of promoters of 18q23 genes in 243 head and neck cancer patients was assessed by quantitative methylation-specific PCR. Promoter methylation was then compared to various clinical characteristics and patient survival. GALR1 and SALL3 promoter methylation correlated with reduced disease-free survival (log-rank test, p = 0.018 and p = 0.013, respectively). Furthermore, based on multivariate Cox proportional hazards analysis, these methylation events were associated with poor disease-free survival, with hazard ratios of 1.600 (95% confidence interval: CI, 1.027–2.493; p = 0.038) and 1.911 (95% CI, 1.155–3.162; p = 0.012), respectively. By comparison, GALR1 and SALL3 methylation were not prognostic for overall survival in The Cancer Genome Atlas (TCGA) cohort. Our findings suggest that the methylation status of 18q23 genes could serve as important biomarkers for the prediction of clinical outcomes in well-annotated head and neck squamous cell carcinoma cohorts. GALR1 and SALL3 methylation could thus help to facilitate risk stratification for individualized treatment.
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Affiliation(s)
- Kiyoshi Misawa
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Takeharu Kanazawa
- Department of Otolaryngology, Tokyo Voice Center, International University of Health and Welfare, Tokyo 107-0052, Japan.
| | - Daiki Mochizuki
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Atsushi Imai
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Masato Mima
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Satoshi Yamada
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Kotaro Morita
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Yuki Misawa
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Kazuya Shinmura
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
| | - Hiroyuki Mineta
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.
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12
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Liu Y, Liang T, Qiu X, Ye X, Li Z, Tian B, Yan D. Down-Regulation of Nfatc1 Suppresses Proliferation, Migration, Invasion, and Warburg Effect in Prostate Cancer Cells. Med Sci Monit 2019; 25:1572-1581. [PMID: 30817743 PMCID: PMC6404685 DOI: 10.12659/msm.910998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 10/04/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Prostate cancer (PCa), accounting for 28% of all male cancer cases, is the second leading cause of cancer-related death among men. NFATc1, belonging to the NFAT family, is overexpressed in PCa and is correlated with the risk of recurrence after radical prostatectomy. MATERIAL AND METHODS In the present study, the expression of NFATc, c-myc, and PKM2 in PCa cells was regulated by lentiviruses and then detected by real-time PCR and Western blot analysis. Further, proliferation, invasion, and migration assays were performed. The glucose consumption and lactate production were assessed by biochemical detection. RESULTS We found that NFATc1 down-regulation significantly suppressed the proliferation and Warburg effect of PCa cells, concurrent with a decrease of c-myc and PKM2 expression. Likewise, the abilities of migration and invasion were also inhibited in NFATc1-silenced PCa cells. In addition, NFATc1 down-regulation-induced inhibition of cell proliferation, migration, invasion, and Warburg effect were counteracted by up-regulation of c-myc or PKM2. The expression of PKM2 was positively regulated by NFATc1 and c-myc expression. CONCLUSIONS These results indicate that NFATc1 down-regulation can suppress the proliferation, Warburg effect, and migration and invasion abilities of PCa cells, probably by regulating c-myc and PKM2 expression. NFATc1 may be a potential therapeutic target for PCa and could be used as a diagnosis or prognosis indicator of PCa.
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Affiliation(s)
- Yuanyuan Liu
- Department of Urology, Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong, P.R. China
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
| | - Tao Liang
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
| | - Xinkai Qiu
- Department of Urology, Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong, P.R. China
| | - Xuxiao Ye
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
| | - Zuowei Li
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
| | - Binqiang Tian
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
| | - Dongliang Yan
- Department of Urology, Shanghai Sixth People’s Hospital East Affiliated to Shanghai University of Medicine and Health Sciences, Shanghai, P.R. China
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13
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Hu K, Li Y, Wu W, Chen H, Chen Z, Zhang Y, Guo Y, Dong Y. High-performance gene expression and knockout tools using sleeping beauty transposon system. Mob DNA 2018; 9:33. [PMID: 30534207 PMCID: PMC6260868 DOI: 10.1186/s13100-018-0139-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 11/19/2018] [Indexed: 12/14/2022] Open
Abstract
Background Similar to retro-/lenti- virus system, DNA transposons are useful tools for stable expression of exogenous genes in mammalian cells. Sleeping Beauty (SB) transposon has adopted for integrating genes into host genomes in recent studies. However, SB-derived vector system for proteins purifying/tracking and gene knockout are still not available. Results In this study, we generated a series of vectors (termed as pSB vectors) containing Sleeping Beauty IRDR-L/R that can be transposed by SB transposase. Gateway cassette was combined to the pSB vectors to facilitate the cloning. Vectors with various tags, Flag, Myc, HA, V5 and SFB, were generated for multiple options. Moreover, we incorporated the CRISPR-Cas9 cassette into the pSB plasmids for gene knockout. Indeed, using one of these vectors (pSB-SFB-GFP), we performed Tandem Affinity Purification and identified that NFATc1 is a novel binding partner of FBW7. We also knocked out RCC2 and BRD7 using pSB-CRISPR vector respectively, and revealed the novel roles of these two proteins in mitosis. Conclusion Our study demonstrated that the pSB series vectors are convenient and powerful tools for gene overexpression and knockout in mammalian cells, providing a new alternative approach for molecular cell biology research.
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Affiliation(s)
- Kaishun Hu
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Yu Li
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Wenjing Wu
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China.,2Department of Breast Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Hengxing Chen
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Zhen Chen
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Yin Zhang
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Yabin Guo
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
| | - Yin Dong
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120 China
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14
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RETRACTED: Anti-angiogenic effect of Interleukin-26 in oxygen-induced retinopathy mice via inhibiting NFATc1-VEGF pathway. Biochem Biophys Res Commun 2018; 499:849-855. [PMID: 29621550 DOI: 10.1016/j.bbrc.2018.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/01/2018] [Indexed: 11/23/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article has been retracted at the request of authors.
The Journal received an expression of concern from a reader, which noted that:
“The problem is that there is no IL-26 gene in the mouse. They claim they bought the KO mouse and the mouse IL-26 protein but given that there is no mouse IL-26 gene, a purchase is not possible and in fact no such reagents are available. Furthermore they do reference and anti-IL-26 antibody but the spec sheet clearly states that it is only reactive with the human protein…., the Enzo Life Sciences online catalog does not have a listing for recombinant IL-26 of any kind.”
The authors apologize for their mistakes and have asked to retract the article.
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15
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Huynh H, Wan Y. mTORC1 impedes osteoclast differentiation via calcineurin and NFATc1. Commun Biol 2018; 1:29. [PMID: 30271915 PMCID: PMC6123628 DOI: 10.1038/s42003-018-0028-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 03/06/2018] [Indexed: 12/26/2022] Open
Abstract
Rapamycins are immunosuppressant and anti-cancer drugs that inhibit the kinase mTOR. Clinically, they often cause bone pain, bone necrosis, and high bone turnover, yet the mechanisms are unclear. Here we show that mTORC1 activity is high in osteoclast precursors but downregulated upon RANKL treatment. Loss-of-function genetic models reveal that while early Raptor deletion in hematopoietic stem cells blunts osteoclastogenesis due to compromised proliferation/survival, late Raptor deletion in osteoclast precursors instead augments osteoclastogenesis. Gain-of-function genetic models by TSC1 deletion in HSCs or osteoclast precursors cause constitutive mTORC1 activation, impairing osteoclastogenesis. Pharmacologically, rapamycin treatment at low but clinically relevant doses exacerbates osteoclast differentiation and bone resorption, leading to bone loss. Mechanistically, RANKL inactivates mTORC1 via calcineurin-mediated mTORC1 dephosphorylation, consequently activating NFATc1 by reducing mTORC1-mediated NFATc1 phosphorylation. These findings uncover biphasic roles of mTORC1 in osteoclastogenesis, dosage-dependent effects of rapamycin on bone, and a previously unrecognized calcineurin-mTORC1-NFATc1 phosphorylation-regulatory signaling cascade.
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Affiliation(s)
- HoangDinh Huynh
- Department of Pharmacology, The University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Yihong Wan
- Department of Pharmacology, The University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
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16
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Gao Y, Ge W. The histone methyltransferase DOT1L inhibits osteoclastogenesis and protects against osteoporosis. Cell Death Dis 2018; 9:33. [PMID: 29348610 PMCID: PMC5833786 DOI: 10.1038/s41419-017-0040-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/14/2017] [Accepted: 10/05/2017] [Indexed: 12/20/2022]
Abstract
Osteoclasts are absorptive cells that play a critical role in homeostatic bone remodeling and pathological bone resorption. Emerging evidence suggests an important role of epigenetic regulation in osteoclastogenesis. In this study, we investigated the role of DOT1L, which regulates gene expression epigenetically by histone H3K79 methylation (H3K79me), during osteoclast formation. Using RANKL-induced RAW264.7 macrophage cells as an osteoclast differentiation model, we found that DOT1L and H3K79me2 levels were upregulated during osteoclast differentiation. Small molecule inhibitor- (EPZ5676 or EPZ004777) or short hairpin RNA-mediated reduction in DOT1L expression promoted osteoclast differentiation and resorption. In addition, DOT1L inhibition increased osteoclast surface area and accelerated bone-mass reduction in a mouse ovariectomy (OVX) model of osteoporosis without alter osteoblast differentiation. DOT1L inhibition increase reactive oxygen species (ROS) generation and autophagy activity, and cell migration in pre-osteoclasts. Moreover, it strengthened expression of osteoclast fusion and resorption-related protein CD9 and MMP9 in osteoclasts derived from RAW264.7. Our findings support a new mechanism of DOT1L-regulated, H3K79me2-mediated, epigenetic regulation of osteoclast differentiation, implicating DOT1L as a new therapeutic target for osteoclast dysregulation-induced disease.
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Affiliation(s)
- Yanpan Gao
- State Key Laboratory of Medical Molecular Biology & Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences; School of Basic Medicine, Peking Union Medical College, Beijing, China.
| | - Wei Ge
- State Key Laboratory of Medical Molecular Biology & Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences; School of Basic Medicine, Peking Union Medical College, Beijing, China.
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