151
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Cho DS, Doles JD. Skeletal Muscle Progenitor Cell Heterogeneity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1169:179-193. [PMID: 31487024 DOI: 10.1007/978-3-030-24108-7_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tissue-specific stem cells contribute to adult tissue maintenance, repair, and regeneration. In skeletal muscle, many different mononuclear cell types are capable of giving rise to differentiated muscle. Of these tissue stem-like cells, satellite cells (SCs) are the most studied muscle stem cell population and are widely considered the main cellular source driving muscle repair and regeneration in adult tissue. Within the satellite cell pool, many distinct subpopulations exist, each exhibiting differential abilities to exit quiescence, expand, differentiate, and self-renew. In this chapter, we discuss the different stem cell types that can give rise to skeletal muscle tissue and then focus on satellite cell heterogeneity during the process of myogenesis/muscle regeneration. Finally, we highlight emerging opportunities to better characterize muscle stem cell heterogeneity, which will ultimately deepen our appreciation of stem cells in muscle development, repair/regeneration, aging, and disease.
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Affiliation(s)
- Dong Seong Cho
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Jason D Doles
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA.
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152
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Eskandari S, Yazdanparast R. Overexpression of Hes1 is involved in sensitization of K562 cells to Imatinib. J Cell Biochem 2018; 120:10128-10136. [PMID: 30548309 DOI: 10.1002/jcb.28296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/24/2018] [Indexed: 01/26/2023]
Abstract
Tyrosine kinase inhibitor (TKI)-based therapy has created promising results among much chronic myeloid leukemia (CML) patients. Imatinib as a relatively specific inhibitor of Bcr-Abl is at present one of the undisputed therapeutic agent for newlydiagnosed patients with CML. However, the occurrence of imatinib-resistance enlightens the urgent need to identify other therapeutic agents against CML. Juglone (5-hydroxy-2-methyl-1, 4-naphthoquinone) exerts cytotoxic effects against various human cancer cell lines. However, the mechanisms through which Juglone induces anticancer effects in CML especially in comparison with imatinib treatment remain unknown. Our results revealed that Juglone-inhibited K562 cells growth through inducing apoptosis. Based on our Western blot analyses, Juglone significantly reduced p-Akt levels and increased the expression level of Forkhead box O1 (FoxO1) and FoxO3a proteins. Moreover, hairy/enhancer of split-1 (Hes1) protein, overexpressed under the influence of Juglone, is apparently involved in Juglone-induced apoptosis among K562 cells. Conversely, treatment with imatinib attenuated Hes1 protein expression. Considering the different functional mechanism of Juglone compared with imatinib, it seems that Juglone treatment could be a useful alternative strategy for the treatment of patients with imatinib-resistance.
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Affiliation(s)
- Sedigheh Eskandari
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Razieh Yazdanparast
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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153
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Abstract
Notch (Notch1 through 4) are transmembrane receptors that play a fundamental role in cell differentiation and function. Notch receptors are activated following interactions with their ligands in neighboring cells. There are five classic ligands termed Jagged (Jag)1 and Jag2 and Delta-like (Dll)1, Dll3, and Dll4. Recent work has established Notch as a signaling pathway that plays a critical role in the differentiation and function of cells of the osteoblast and osteoclast lineages and in skeletal development and bone remodeling. The effects of Notch are cell-context dependent, and the four Notch receptors carry out specific functions in the skeleton. Gain- and loss-of-function mutations of components of the Notch signaling pathway result in a variety of congenital disorders with significant craniofacial and skeletal manifestations. The Notch ligand Jag1 is a determinant of bone mineral density, and Notch plays a role in the early phases of fracture healing. Alterations in Notch signaling are associated with osteosarcoma and with the metastatic potential of carcinoma of the breast and of the prostate. Controlling Notch signaling could prove useful in diseases of Notch gain-of-function and in selected skeletal disorders. However, clinical data on agents that modify Notch signaling are not available. In conclusion, Notch signaling is a novel pathway that regulates skeletal homeostasis in health and disease.
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Affiliation(s)
- E Canalis
- Departments of Orthopaedic Surgery and Medicine, UConn Musculoskeletal Institute, UConn Health, 263 Farmington Avenue, Farmington, CT, 06030-4037, USA.
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154
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Lee SY, Long F. Notch signaling suppresses glucose metabolism in mesenchymal progenitors to restrict osteoblast differentiation. J Clin Invest 2018; 128:5573-5586. [PMID: 30284985 DOI: 10.1172/jci96221] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/02/2018] [Indexed: 01/02/2023] Open
Abstract
Notch signaling critically controls cell fate decisions in mammals, both during embryogenesis and in adults. In the skeleton, Notch suppresses osteoblast differentiation and sustains bone marrow mesenchymal progenitors during postnatal life. Stabilizing mutations of Notch2 cause Hajdu-Cheney syndrome, which is characterized by early-onset osteoporosis in humans, but the mechanism whereby Notch inhibits bone accretion is not fully understood. Here, we report that activation of Notch signaling by either Jagged1 or the Notch2 intracellular domain suppresses glucose metabolism and osteoblast differentiation in primary cultures of bone marrow mesenchymal progenitors. Importantly, deletion of Notch2 in the limb mesenchyme increases both glycolysis and bone formation in the long bones of postnatal mice, whereas pharmacological reduction of glycolysis abrogates excessive bone formation. Mechanistically, Notch reduces the expression of glycolytic and mitochondrial complex I genes, resulting in a decrease in mitochondrial respiration, superoxide production, and AMPK activity. Forced activation of AMPK restores glycolysis in the face of Notch signaling. Thus, suppression of glucose metabolism contributes to the mechanism, whereby Notch restricts osteoblastogenesis from bone marrow mesenchymal progenitors.
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Affiliation(s)
| | - Fanxin Long
- Department of Orthopaedic Surgery, and.,Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA
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155
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Liang Y, Zhang T, Shi M, Zhang S, Guo Y, Gao J, Yang X. Low expression of NCOA5 predicts poor prognosis in human cervical cancer and promotes proliferation, migration, and invasion of cervical cancer cell lines by regulating notch3 signaling pathway. J Cell Biochem 2018; 120:6237-6249. [PMID: 30335900 DOI: 10.1002/jcb.27911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/25/2018] [Indexed: 12/15/2022]
Abstract
Nuclear receptor coactivator 5 (NCOA5) specifically enhances estrogen receptor α-modulated transcriptional activity. As a novel tumor suppressor, depletion of NCOA5 is associated with the development of a variety of tumors, but its function in cervical cancer is currently unclear. In this study, we addressed how expression of NCOA5 changed in the development of human cervical cancer and its association with clinicopathological features, prognosis, and biology characteristics of cervical cancer. Analysis of the microarrays in the Oncomine database indicated that NCOA5 expression was lower in human cervical squamous cell carcinoma tissues than that in normal cervical tissues. That was corroborated by our experiments using fresh tissues: the expression levels of NCOA5 messenger RNA and protein were both significantly decreased in cervical cancer tissues compared with paired adjacent nontumor tissues (P < 0.01). Low expression of NCOA5 is associated with the International Federation of Gynecology and Obstetrics stage ( P = 0.043) and histological grade ( P = 0.018) of human cervical cancer. In addition, patients possessing low NCOA5 expression had poorer prognosis. Univariate and multivariate Cox regression analyses indicated that low NCOA5 expression may be an independent prognostic factor for poorer overall survival in cervical cancer. Further, downregulation of NCOA5 expression results in a significant increase in proliferation, migration, and invasion of HeLa cells. Data of xenograft tumor on BALB/c nude mice manifested that HeLa cells with low NCOA5 expression tend to form larger tumors than negative control ones. In contrast, overexpression of NCOA5 expression leads to the opposite results. Finally, we found that NCOA5 might affect the biological function of human cervical cancer cells by mediating the notch3 signaling pathway. These findings suggest that NCOA5 acts as a tumor suppressor to inhibit tumorigenicity, migration, and invasion, and thus represents a potential novel prognostic marker for overall survival in cervical cancer.
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Affiliation(s)
- Ying Liang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Tianli Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Mengdie Shi
- Department of Obstetrics and Gynecology, Suzhou Municipal Hospital, Suzhou, China
| | - Shuo Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Yaxing Guo
- Department of Obstetrics and Gynecology, Shandong Obstetrics and Gynecology Hospital, Jinan, China
| | - Jiwei Gao
- Department of Oncology and Pathology, Karolinska Institute, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Xingsheng Yang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
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156
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Yan Q, Zhao R, Shen C, Wang F, Li W, Gao SJ, Lu C. Upregulation of MicroRNA 711 Mediates HIV-1 Vpr Promotion of Kaposi's Sarcoma-Associated Herpesvirus Latency and Induction of Pro-proliferation and Pro-survival Cytokines by Targeting the Notch/NF-κB-Signaling Axis. J Virol 2018; 92:JVI.00580-18. [PMID: 29976660 PMCID: PMC6146700 DOI: 10.1128/jvi.00580-18] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/21/2018] [Indexed: 02/05/2023] Open
Abstract
Coinfection with HIV-1 and Kaposi's sarcoma-associated herpesvirus (KSHV) often leads to AIDS-related malignancies, including Kaposi's sarcoma (KS) and primary effusion lymphoma (PEL). The interaction between HIV and KSHV plays a pivotal role in the progression of these malignancies. We have previously demonstrated that, by upregulating miR-942-5p, HIV-1 viral protein R (Vpr) inhibits KSHV lytic replication by targeting IκBα to activate the NF-κB signaling (Q. Yan, C. Shen, J. Qin, W. Li, M. Hu, H. Lu, D. Qin, J. Zhu, S. J. Gao, C. Lu, J Virol 90:8739-8753, 2016). Here, we show that Vpr inactivates Notch signaling, resulting in inhibition of KSHV lytic replication and induction of pro-proliferative and -survival cytokines, including interleukin-2 (IL-2), TIMP-1, IGF-1, and NT-4. Mechanistically, Vpr upregulates miR-711, which directly targets the Notch1 3' untranslated region. Suppression of miR-711 relieved Notch1 and reduced Vpr inhibition of KSHV lytic replication and Vpr induction of pro-proliferation and -survival cytokines, while overexpression of miR-711 exhibited the opposite effect. Finally, overexpression of Notch1 reduced Vpr induction of NF-κB activity by promoting IκBα promoter activity. Our novel findings reveal that by upregulating miR-711 to target Notch1, Vpr silences Notch signaling to activate the NF-κB pathway by reducing IκBα expression, leading to inhibition of KSHV lytic replication and induction of pro-proliferation and -survival cytokines. Therefore, the miR-711/Notch/NF-κB axis is important in the pathogenesis of AIDS-related malignancies and could be an attractive therapeutic target.IMPORTANCE HIV-1 infection significantly increases the risk of KS and PEL in KSHV-infected individuals. Our previous study has shown that HIV-1 Vpr regulates the KSHV life cycle by targeting IκBα to activate NF-κB signaling through upregulating cellular miR-942-5p. In this study, we have further found that Vpr inactivates Notch signaling to promote KSHV latency and production of pro-proliferation and -survival cytokines. Another Vpr-upregulated cellular microRNA, miR-711, participates in this process by directly targeting Notch1. As a result, Notch1 upregulation of the IκBα promoter activity is attenuated, resulting in reduced levels of IκBα transcript and protein. Overall, these results illustrate an alternative mechanism of HIV-1 Vpr regulation of KSHV latency and aberrant cytokines through the miR-711/Notch/NF-κB axis. Our novel findings further demonstrate the role of an HIV-1-secreted regulatory protein in the KSHV life cycle and KSHV-related malignancies.
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Affiliation(s)
- Qin Yan
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, People's Republic of China
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Runran Zhao
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Chenyou Shen
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Fei Wang
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Wan Li
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Shou-Jiang Gao
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
- Laboratory of Human Virology and Oncology, Shantou University Medical College, Shantou, Guangdong, People's Republic of China
- UPMC Hillman Cancer Center, Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Chun Lu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, People's Republic of China
- Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Microbiology, Nanjing Medical University, Nanjing, People's Republic of China
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157
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Strug MR, Su RW, Kim TH, Jeong JW, Fazleabas A. The Notch Family Transcription Factor, RBPJκ, Modulates Glucose Transporter and Ovarian Steroid Hormone Receptor Expression During Decidualization. Reprod Sci 2018; 26:774-784. [PMID: 30213224 DOI: 10.1177/1933719118799209] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
During decidualization, endometrial stromal cells differentiate into a secretory phenotype to modulate the uterine microenvironment and promote embryo implantation. This highly metabolic process relies on ovarian steroid receptors and glucose transporters. Canonical Notch signaling is mediated by the transcription factor Recombination Signal Binding Protein for Immunoglobulin Kappa J Region (RBPJ). Loss of RBPJ in the mouse uterus (Pgrcre/+Rbpjflox/flox; Rbpj c-KO) results in subfertility in part due to an abnormal uterine-embryonic axis during implantation and, as described herein, decidualization failure. Induced in vivo decidualization in Rbpj c-KO mice was impaired with the downregulation of decidual markers and decreased progesterone receptor (Pgr) signaling. Consistent with in vivo mouse data, RBPJ knockdown during in vitro Human uterine fibroblast (HuF) cell decidualization results in the reduced expression of decidual marker genes along with PGR. Expression of the glucose transporter, SLC2A1, was decreased in the RBPJ-silenced HuF cells, which corresponded to decreased Slc2a1 in the secondary decidual zone of Rbpj c-KO mouse uteri. Exogenous administration of pyruvate, which bypasses the need for glucose, rescues PRL expression in RBPJ-deficient HuF cells. In summary, Notch signaling through RBPJ controls both ovarian steroid receptor PGR and glucose transporter SLC2A1 expression during decidualization, and this dysregulation likely contributes to embryo implantation failure.
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Affiliation(s)
- Michael R Strug
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, 400 Monroe Avenue NW, GRRC, Room 3020, Grand Rapids, MI, 49503, USA.,Department of Obstetrics and Gynecology, Spectrum Health, Grand Rapids, MI, USA
| | - Ren-Wei Su
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, 400 Monroe Avenue NW, GRRC, Room 3020, Grand Rapids, MI, 49503, USA
| | - Tae Hoon Kim
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, 400 Monroe Avenue NW, GRRC, Room 3020, Grand Rapids, MI, 49503, USA
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, 400 Monroe Avenue NW, GRRC, Room 3020, Grand Rapids, MI, 49503, USA
| | - Asgerally Fazleabas
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, 400 Monroe Avenue NW, GRRC, Room 3020, Grand Rapids, MI, 49503, USA.
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158
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Yuan Q, Chen X, Han Y, Lei T, Wu Q, Yu X, Wang L, Fan Z, Wang S. Modification of α2,6-sialylation mediates the invasiveness and tumorigenicity of non-small cell lung cancer cells in vitro and in vivo via Notch1/Hes1/MMPs pathway. Int J Cancer 2018; 143:2319-2330. [PMID: 29981167 DOI: 10.1002/ijc.31737] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 06/01/2018] [Accepted: 06/13/2018] [Indexed: 12/15/2022]
Abstract
The alterations of sialylation on cell surface N-glycans due to overexpression of different sialyltransferases play a vital role in tumorigenesis and tumor progression. The β-galactoside α2-6-sialyltransferase 1 (ST6Gal-I) has been reported to be highly expressed in several cancers, including breast cancer, hepatocellular cancer and colon carcinoma. However, the roles and underlying mechanisms of ST6Gal-I in non-small cell lung cancer (NSCLC) still need to be elucidated. In this study, we determined that mRNA levels of ST3GAL1, ST6GALNAC3 and ST8SIA6 were remarkably reduced in lung cancer tissues and cells, whereas ST6GAL1 level significantly increased. The mRNA, protein and glycan levels of ST6Gal-I were higher in lung cancer tissues and cells. Moreover, down-regulation of ST6Gal-I decreased protein levels of Jagged1, DLL-1, Notch1, Hes1, Hey1, matrix-metalloproteinases (MMPs) and VEGF, and suppressed proliferation, migration and invasion capabilities of A549 and H1299 cells in vitro. In vivo, ST6Gal-I silencing suppressed tumorigenicity of NSCLC cells in athymic nude mice via the Notch1/Hes1/MMPs pathway. In addition, overexpression of Notch1 rescued the reduced growth and metastasis of A549 and H1299 cells resulted by ST6Gal-I silencing. Modification of α2,6-sialylation positively associates with lung cancer progression, thereby indicating that ST6Gal-I may mediate the invasiveness and tumorigenicity of NSCLC cells via the Notch1/Hes1/MMPs pathway both in vitro and in vivo. Thus, our results provide a novel therapeutic approach for blocking metastasis in lung cancer patients.
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Affiliation(s)
- Qingmin Yuan
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, Liaoning, China
| | - Xixi Chen
- Department of Biological Sciences, School of Life Science and Medicine, Dalian University of Technology, Panjin, Liaoning, China
| | - Yang Han
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, Liaoning, China
| | - Ting Lei
- Department of Thoracic Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qiang Wu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiao Yu
- Department of Pathology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Liping Wang
- Department of Biological Sciences, School of Life Science and Medicine, Dalian University of Technology, Panjin, Liaoning, China
| | - Zhe Fan
- Department of Thoracic Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shujing Wang
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, Liaoning, China
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159
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Brun M, Jain S, Monckton EA, Godbout R. Nuclear Factor I Represses the Notch Effector HEY1 in Glioblastoma. Neoplasia 2018; 20:1023-1037. [PMID: 30195713 PMCID: PMC6138789 DOI: 10.1016/j.neo.2018.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 01/16/2023] Open
Abstract
Glioblastomas (GBMs) are highly aggressive brain tumors with a dismal prognosis. Nuclear factor I (NFI) is a family of transcription factors that controls glial cell differentiation in the developing central nervous system. NFIs have previously been shown to regulate the expression of astrocyte markers such as glial fibrillary acidic protein (GFAP) in both normal brain and GBM cells. We used chromatin immunoprecipitation (ChIP)–on-chip to identify additional NFI targets in GBM cells. Analysis of our ChIP data revealed ~400 putative NFI target genes including an effector of the Notch signaling pathway, HEY1, implicated in the maintenance of neural stem cells. All four NFIs (NFIA, NFIB, NFIC, and NFIX) bind to NFI recognition sites located within 1 kb upstream of the HEY1 transcription site. We further showed that NFI negatively regulates HEY1 expression, with knockdown of all four NFIs in GBM cells resulting in increased HEY1 RNA levels. HEY1 knockdown in GBM cells decreased cell proliferation, increased cell migration, and decreased neurosphere formation. Finally, we found a general correlation between elevated levels of HEY1 and expression of the brain neural stem/progenitor cell marker B-FABP in GBM cell lines. Knockdown of HEY1 resulted in an increase in the RNA levels of the GFAP astrocyte differentiation marker. Overall, our data indicate that HEY1 is negatively regulated by NFI family members and is associated with increased proliferation, decreased migration, and increased stem cell properties in GBM cells.
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Affiliation(s)
- Miranda Brun
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada, T6G 1Z2
| | - Saket Jain
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada, T6G 1Z2
| | - Elizabeth A Monckton
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada, T6G 1Z2
| | - Roseline Godbout
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada, T6G 1Z2.
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160
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Zanotti S, Yu J, Bridgewater D, Wolf JM, Canalis E. Mice harboring a Hajdu Cheney Syndrome mutation are sensitized to osteoarthritis. Bone 2018; 114:198-205. [PMID: 29940267 PMCID: PMC6083868 DOI: 10.1016/j.bone.2018.06.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/01/2018] [Accepted: 06/20/2018] [Indexed: 11/27/2022]
Abstract
Osteoarthritis is a joint disease characterized by cartilage degradation, altered gene expression and inflammation. NOTCH1 and NOTCH2 receptors and the JAGGED1 ligand regulate chondrocyte biology; however, the contribution of Notch signaling to osteoarthritis is controversial. Hajdu Cheney Syndrome (HCS) is a rare genetic disorder affecting the skeleton and associated with NOTCH2 mutations that lead to NOTCH2 gain-of-function. A murine model of the disease (Notch2tm1.1Ecan) was used to test whether the HCS mutation increases the susceptibility to osteoarthritis. The knee of three-month-old Notch2tm1.1Ecan male mice and control sex-matched littermates was destabilized by resection of the medial meniscotibial ligament, and changes in the joint analyzed two months thereafter. Expression of Notch target genes was increased in the femoral heads of Notch2tm1.1Ecan mice, documenting Notch signal activation. Periarticular bone and cartilage structures were unaffected in Notch2tm1.1Ecan mutants subjected to sham surgery, indicating that NOTCH2 gain-of-function had no discernible impact on joint structure under basal conditions. However, destabilization of the medial meniscus increased osteophyte volume and thickened subchondral bone in Notch2tm1.1Ecan mice compared to wild type littermates. Moreover, destabilized Notch2tm1.1Ecan mutants exhibited histological signs of moderate to severe cartilage degeneration, demonstrating joint sensitization to the development of osteoarthritis. Chondrocyte cultures from Notch2tm1.1Ecan mutants expressed increased Il6 mRNA levels following exposure to JAGGED1, possibly explaining the susceptibility of Notch2tm1.1Ecan mice to osteoarthritis. In conclusion, Notch2tm1.1Ecan mutants are sensitized to the development of osteoarthritis in destabilized joints and NOTCH2 activation may play a role in the pathogenesis of the disease.
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Affiliation(s)
- S Zanotti
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT 06030, United States of America; Department of Medicine, UConn Health, Farmington, CT 06030, United States of America; UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, United States of America
| | - J Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT 06030, United States of America; UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, United States of America
| | - D Bridgewater
- UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, United States of America
| | - J M Wolf
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT 06030, United States of America; UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, United States of America
| | - E Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT 06030, United States of America; Department of Medicine, UConn Health, Farmington, CT 06030, United States of America; UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, United States of America.
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161
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Dittmer J. Breast cancer stem cells: Features, key drivers and treatment options. Semin Cancer Biol 2018; 53:59-74. [PMID: 30059727 DOI: 10.1016/j.semcancer.2018.07.007] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/10/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023]
Abstract
The current view is that breast cancer is a stem cell disease characterized by the existence of cancer cells with stem-like features and tumor-initiating potential. These cells are made responsible for tumor dissemination and metastasis. Common therapies by chemotherapeutic drugs fail to eradicate these cells and rather increase the pool of cancer stem cells in tumors, an effect that may increase the likelyhood of recurrence. Fifteen years after the first evidence for a small stem-like subpopulation playing a major role in breast cancer initiation has been published a large body of knowledge has been accumulated regarding the signaling cascades and proteins involved in maintaining stemness in breast cancer. Differences in the stem cell pool size and in mechanisms regulating stemness in the different breast cancer subtypes have emerged. Overall, this knowledge offers new approaches to intervene with breast cancer stem cell activity. New options are particularly needed for the treatment of triple-negative breast cancer subtype, which is particularly rich in cancer stem cells and is also the subtype for which specific therapies are still not available.
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Affiliation(s)
- Jürgen Dittmer
- Clinic for Gynecology, Martin Luther University Halle-Wittenberg, Germany.
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162
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Azimi M, Le TT, Brown NL. Presenilin gene function and Notch signaling feedback regulation in the developing mouse lens. Differentiation 2018; 102:40-52. [PMID: 30059908 DOI: 10.1016/j.diff.2018.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/06/2018] [Accepted: 07/24/2018] [Indexed: 12/25/2022]
Abstract
Presenilins (Psen1 and Psen2 in mice) are polytopic transmembrane proteins that act in the γ-secretase complex to make intra-membrane cleavages of their substrates, including the well-studied Notch receptors. Such processing releases the Notch intracellular domain, allowing it to physically relocate from the cell membrane to the nucleus where it acts in a transcriptional activating complex to regulate downstream genes in the signal-receiving cell. Previous studies of Notch pathway mutants for Jagged1, Notch2, and Rbpj demonstrated that canonical signaling is a necessary component of normal mouse lens development. However, the central role of Psens within the γ-secretase complex has never been explored in any developing eye tissue or cell type. By directly comparing Psen single and double mutant phenotypes during mouse lens development, we found a stronger requirement for Psen1, although both genes are needed for progenitor cell growth and to prevent apoptosis. We also uncovered a novel genetic interaction between Psen1 and Jagged1. By quantifying protein and mRNA levels of key Notch pathway genes in Psen1/2 or Jagged1 mutant lenses, we identified multiple points in the overall signaling cascade where feedback regulation can occur. Our data are consistent with the loss of particular genes indirectly influencing the transcription level of another. However, we conclude that regulating Notch2 protein levels is particularly important during normal signaling, supporting the importance of post-translational regulatory mechanisms in this tissue.
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Affiliation(s)
- Mina Azimi
- Department of Cell Biology & Human Anatomy; University of California, Davis One Shields Avenue, Davis, CA 95616, USA
| | - Tien T Le
- Division of Developmental Biology, Cincinnati Childrens Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Nadean L Brown
- Department of Cell Biology & Human Anatomy; University of California, Davis One Shields Avenue, Davis, CA 95616, USA; Division of Developmental Biology, Cincinnati Childrens Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.
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163
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Canalis E, Yu J, Schilling L, Yee SP, Zanotti S. The lateral meningocele syndrome mutation causes marked osteopenia in mice. J Biol Chem 2018; 293:14165-14177. [PMID: 30042232 DOI: 10.1074/jbc.ra118.004242] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/11/2018] [Indexed: 12/26/2022] Open
Abstract
Lateral meningocele syndrome (LMS) is a rare genetic disorder characterized by neurological complications and osteoporosis. LMS is associated with mutations in exon 33 of NOTCH3 leading to a truncated protein lacking sequences for NOTCH3 degradation and presumably causing NOTCH3 gain of function. To create a mouse model reproducing human LMS-associated mutations, we utilized CRISPR/Cas9 to introduce a tandem termination codon at bases 6691-6696 (ACCAAG→TAATGA) and verified this mutation (Notch3tm1.1Ecan ) by DNA sequencing of F1 mice. One-month-old male and female heterozygous Notch3tm1.1Ecan mice had cancellous and cortical bone osteopenia but exhibited no obvious neurological alterations, and histopathology of multiple organs revealed no abnormalities. Microcomputed tomography of these mutants revealed a 35-60% decrease in cancellous bone volume associated with a reduction in trabecular number and decreased connectivity. During maturation, cancellous and cortical bones were restored in female but not in male mice, which exhibited cancellous bone osteopenia at 4 months. Cancellous bone histomorphometry revealed increased osteoblast and osteocyte numbers and a modest increase in osteoclast surface and bone formation rate. Notch3tm1.1Ecan calvarial osteoblasts had increased proliferation and increased bone γ-carboxyglutamate protein (Bglap) and TNF superfamily member 11 (Tnfsf11) mRNA levels and lower Tnfrsf11b levels. Tnfsf11 mRNA was increased in osteocyte-rich femora from Notch3tm1.1Ecan mice. Cultures of bone marrow-derived macrophages from Notch3tm1.1Ecan mice revealed increased osteoclast formation, particularly in cocultures with osteoblasts from Notch3tm1.1Ecan mice. In conclusion, the Notch3tm1.1Ecan mutation causes osteopenia despite an increase in osteoblast proliferation and function and is associated with enhanced Tnfsf11 expression in osteoblasts and osteocytes.
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Affiliation(s)
- Ernesto Canalis
- From the Departments of Orthopaedic Surgery, .,Medicine, and.,UConn Musculoskeletal Institute, and
| | - Jungeun Yu
- From the Departments of Orthopaedic Surgery.,UConn Musculoskeletal Institute, and
| | - Lauren Schilling
- From the Departments of Orthopaedic Surgery.,UConn Musculoskeletal Institute, and
| | - Siu-Pok Yee
- Cell Biology.,Center for Mouse Genome Modification, UConn Health, Farmington, Connecticut 06030
| | - Stefano Zanotti
- From the Departments of Orthopaedic Surgery.,Medicine, and.,UConn Musculoskeletal Institute, and
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164
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Hildebrand D, Uhle F, Sahin D, Krauser U, Weigand MA, Heeg K. The Interplay of Notch Signaling and STAT3 in TLR-Activated Human Primary Monocytes. Front Cell Infect Microbiol 2018; 8:241. [PMID: 30042932 PMCID: PMC6048282 DOI: 10.3389/fcimb.2018.00241] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/21/2018] [Indexed: 11/23/2022] Open
Abstract
The highly conserved Notch signaling pathway essentially participates in immunity through regulation of developmental processes and immune cell activity. In the adaptive immune system, the impact of the Notch cascade in T and B differentiation is well studied. In contrast, the function, and regulation of Notch signaling in the myeloid lineage during infection is poorly understood. Here we show that TLR signaling, triggered through LPS stimulation or in vitro infection with various Gram-negative and -positive bacteria, stimulates Notch receptor ligand Delta-like 1 (DLL1) expression and Notch signaling in human blood-derived monocytes. TLR activation induces DLL1 indirectly, through stimulated cytokine expression and autocrine cytokine receptor-mediated signal transducer and activator of transcription 3 (STAT3). Furthermore, we reveal a positive feedback loop between Notch signaling and Janus kinase (JAK)/STAT3 pathway during in vitro infection that involves Notch-boosted IL-6. Inhibition of Notch signaling by γ-secretase inhibitor DAPT impairs TLR4-stimulated accumulation of NF-κB subunits p65 in the nucleus and subsequently reduces LPS- and infection-mediated IL-6 production. The reduced IL-6 release correlates with a diminished STAT3 phosphorylation and reduced expression of STAT3-dependent target gene programmed death-ligand 1 (PD-L1). Corroborating recombinant soluble DLL1 and Notch activator oxaliplatin stimulate STAT3 phosphorylation and expression of immune-suppressive PD-L1. Therefore we propose a bidirectional interaction between Notch signaling and STAT3 that stabilizes activation of the transcription factor and supports STAT3-dependent remodeling of myeloid cells toward an immuno-suppressive phenotype. In summary, the study provides new insights into the complex network of Notch regulation in myeloid cells during in vitro infection. Moreover, it points to a participation of Notch in stabilizing TLR-mediated STAT3 activation and STAT3-mediated modulation of myeloid functional phenotype through induction of immune-suppressive PD-L1.
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Affiliation(s)
- Dagmar Hildebrand
- Centre for Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
| | - Florian Uhle
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Delal Sahin
- Centre for Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
| | - Ute Krauser
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Klaus Heeg
- Centre for Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
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165
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Zuo Q, Zhang C, Jin K, Jing J, Sun C, Ahmed MF, Song J, Zhang Y, Chen G, Li B. NICD-mediated notch transduction regulates the different fate of chicken primordial germ cells and spermatogonial stem cells. Cell Biosci 2018; 8:40. [PMID: 29951200 PMCID: PMC6009047 DOI: 10.1186/s13578-018-0238-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 06/05/2018] [Indexed: 02/07/2023] Open
Abstract
Background Notch signaling is mainly regulated by Notch1 during development of chicken germ stem cells; however, the molecular mechanisms that contribute to generation of these germ stem cells have not been thoroughly investigated. Results In our studies, Overexpression of the Notch1 NICD promoted development of the reproductive ridge, but inhibited the formation of seminiferous tubules. The formation efficiency of PGCs in the reproductive ridge following overexpression of NICD (7.5% ± 0.11) was significantly higher than that (4.9% ± 0.17, p < 0.05) following inhibition of NICD, While the formation efficiency of spermatogonial stem cells (SSCs) in the testes (12.7% ± 0.08) was significantly lower after NICD overexpression than that after inhibition of NICD (16.3% ± 0.16, p < 0.05). Using co-immunoprecipitation, we found that this anomaly stemmed from the reversal of dissociation of the Notch-regulated transcription factor CBF-1/RBP co-suppression complex during the differentiation of PGCs into SSCs. This dissociation of the CBF-1/RBP co-suppressing complex during the differentiation of ESCs into PGCs resulted in the release of HDAC1 and HDAC2 and the recruitment of mastermind-like 1 to form a coactive complex to promote the expression of the downstream transcription suppressor hairy/enhancer of split-1. Dynamic expression of transducin-like enhancer of split 3, TLE4, and C-terminal binding protein 2 during further differentiation of PGCs inhibited the dissociation of the CBF-1/RBP co-suppression complex and inhibited the expression of the downstream genes. Conclusions In summary, Notch signaling plays diametrically opposing roles during normal development of chicken PGCs and SSCs, and these functions was determined by the expression of NICD, changes in the CBF-1/RBP complex composition, and histone modification.
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Affiliation(s)
- Qisheng Zuo
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Chen Zhang
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Kai Jin
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Jin Jing
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Changhua Sun
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Mahmoud F Ahmed
- 3College of Veterinary Medicine, Suez Canal University, Ismailia, 41522 Egypt
| | - Jiuzhou Song
- 2Department of Animal & Avian Sciences, University of Maryland, Baltimore, MD 20741 USA
| | - Yani Zhang
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Guohong Chen
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
| | - Bichun Li
- 1Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, 88 South University Ave, Yangzhou, Jiangsu 225009 People's Republic of China.,4Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, 88 South University Ave, Yangzhou, 225009 Jiangsu People's Republic of China
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166
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Mesenchymal stem cell-mediated Notch2 activation overcomes radiation-induced injury of the hematopoietic system. Sci Rep 2018; 8:9277. [PMID: 29915190 PMCID: PMC6006282 DOI: 10.1038/s41598-018-27666-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/16/2018] [Indexed: 12/12/2022] Open
Abstract
Radiation exposure severely damages the hematopoietic system. Although several radio-protectors have been proposed to prevent radiation-induced damage, most agents have limited efficacy. In the present study, we investigated whether mesenchymal stem cells (MSCs) could contribute to the expansion of hematopoietic cells and mitigate radiation-induced hematopoietic injury in vitro and in vivo. We found that co-culture with MSCs promoted hematopoietic progenitor/stem cell (HPSCs) maintenance by providing a bone marrow-like microenvironment. In addition, we showed that MSCs prevented radiation-induced damage to HPSCs, as evidenced by the lack of DNA damage and apoptosis. Intravenously injected MSCs rapidly migrated to the bone marrow (BM) and prevented loss of BM cellularity, which reduced lethality and ameliorated pancytopenia in the BM of whole body-irradiated mice. We demonstrated that MSC-derived Jagged1 attenuated radiation-induced cytotoxicity of HPSCs, and that this was mediated by Notch signaling and expression of downstream proteins Bcl2 and p63 in HPSCs. In addition, Notch2 depletion significantly reduced the MSC-mediated radio-protective effect in human- and mouse-derived HPSCs. Collectively, our data show that activation of Notch and its associated downstream signaling pathways prevent radiation-induced hematopoietic injury. Therefore, enhancing Jagged1-Notch2 signaling could provide therapeutic benefit by protecting the hematopoietic system against damage after radiation.
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167
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Notch-1-PTEN-ERK1/2 signaling axis promotes HER2+ breast cancer cell proliferation and stem cell survival. Oncogene 2018; 37:4489-4504. [PMID: 29743588 DOI: 10.1038/s41388-018-0251-y] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 03/14/2018] [Accepted: 03/16/2018] [Indexed: 12/13/2022]
Abstract
Trastuzumab targets the HER2 receptor on breast cancer cells to attenuate HER2-driven tumor growth. However, resistance to trastuzumab-based therapy remains a major clinical problem for women with HER2+ breast cancer. Breast cancer stem cells (BCSCs) are suggested to be responsible for drug resistance and tumor recurrence. Notch signaling has been shown to promote BCSC survival and self-renewal. Trastuzumab-resistant cells have increased Notch-1 expression. Notch signaling drives cell proliferation in vitro and is required for tumor recurrence in vivo. We demonstrate herein a mechanism by which Notch-1 is required for trastuzumab resistance by repressing PTEN expression to contribute to activation of ERK1/2 signaling. Furthermore, Notch-1-mediated inhibition of PTEN is necessary for BCSC survival in vitro and in vivo. Inhibition of MEK1/2-ERK1/2 signaling in trastuzumab-resistant breast cancer cells mimics effects of Notch-1 knockdown on bulk cell proliferation and BCSC survival. These findings suggest that Notch-1 contributes to trastuzumab resistance by repressing PTEN and this may lead to hyperactivation of ERK1/2 signaling. Furthermore, high Notch-1 and low PTEN mRNA expression may predict poorer overall survival in women with breast cancer. Notch-1 protein expression predicts poorer survival in women with HER2+ breast cancer. These results support a potential future clinical trial combining anti-Notch-1 and anti-MEK/ERK therapy for trastuzumab-resistant breast cancer.
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168
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Luo X, Jiang Y, Bi R, Jiang N, Zhu S. Inhibition of notch signaling pathway temporally postpones the cartilage degradation progress of temporomandibular joint arthritis in mice. J Craniomaxillofac Surg 2018; 46:1132-1138. [PMID: 29779621 DOI: 10.1016/j.jcms.2018.04.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/26/2018] [Accepted: 04/25/2018] [Indexed: 02/05/2023] Open
Abstract
PURPOSE The aim of this study is to explore the role of Notch signaling pathway in the initiation and progression of temporomandibular joint osteoarthritis (TMJOA). METHODS 48 mice were divided into DAPT-TMJOA, Control-TMJOA and Control-Sham groups. Animals received discectomy/Sham surgery in their right TMJ, following the DAPT/saline intra-articular injections every week. Mice were sacrificed at 1/4/8 weeks post-surgery. Safranin-O and H&E staining were performed on the TMJ sections for the modified Mankin's score. qPCR and immunohistochemistry were used to evaluate Notch1, Jagged1 and Hes5 expressions. RESULTS The mRNA expressions of Notch1, Jagged1 and Hes5 were significantly increased in Control-TMJOA group compared with Control-Sham group. Immunostaining revealed a dramatic elevation of Notch1, Jagged1 and Hes5 signals distributed in the cartilage at 1 and 4 weeks after discectomy. However, the increased number of those immuno-positive cells turned down at 8 weeks after surgery. DAPT treatment partially rescued the elevated mRNA expression and immuno-positive cell numbers of Notch1, Jagged1 and Hes5. More importantly, the cartilage destruction during TMJOA was delayed by DAPT treatment, analyzed by modified Mankin's score. CONCLUSION Notch signaling participates in the onset and development of TMJOA. Inhibiting Notch signaling activation by DAPT can partially delay the progress of TMJOA.
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Affiliation(s)
- Xueting Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yangmei Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ruiye Bi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Nan Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Songsong Zhu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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169
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Kadur Lakshminarasimha Murthy P, Srinivasan T, Bochter MS, Xi R, Varanko AK, Tung KL, Semerci F, Xu K, Maletic-Savatic M, Cole SE, Shen X. Radical and lunatic fringes modulate notch ligands to support mammalian intestinal homeostasis. eLife 2018; 7:e35710. [PMID: 29629872 PMCID: PMC5896954 DOI: 10.7554/elife.35710] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 03/06/2018] [Indexed: 12/11/2022] Open
Abstract
Notch signalling maintains stem cell regeneration at the mouse intestinal crypt base and balances the absorptive and secretory lineages in the upper crypt and villus. Here we report the role of Fringe family of glycosyltransferases in modulating Notch activity in the two compartments. At the crypt base, RFNG is enriched in the Paneth cells and increases cell surface expression of DLL1 and DLL4. This promotes Notch activity in the neighbouring Lgr5+ stem cells assisting their self-renewal. Expressed by various secretory cells in the upper crypt and villus, LFNG promotes DLL surface expression and suppresses the secretory lineage . Hence, in the intestinal epithelium, Fringes are present in the ligand-presenting 'sender' secretory cells and promote Notch activity in the neighbouring 'receiver' cells. Fringes thereby provide for targeted modulation of Notch activity and thus the cell fate in the stem cell zone, or the upper crypt and villus.
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Affiliation(s)
- Preetish Kadur Lakshminarasimha Murthy
- Center for Genomics and Computational Biology, Department of Biomedical EngineeringDuke UniversityDurhamUnited States
- Sibley School of Mechanical and Aerospace EngineeringCornell UniversityIthacaUnited States
| | - Tara Srinivasan
- Mienig School of Biomedical EngineeringCornell UniversityIthacaUnited States
| | - Matthew S Bochter
- Department of Molecular GeneticsOhio State UniversityColumbusUnited States
| | - Rui Xi
- Center for Genomics and Computational Biology, Department of Biomedical EngineeringDuke UniversityDurhamUnited States
| | | | - Kuei-Ling Tung
- Center for Genomics and Computational Biology, Department of Biomedical EngineeringDuke UniversityDurhamUnited States
- Department of Biological and Environmental EngineeringCornell UniversityIthacaUnited States
| | - Fatih Semerci
- Department of PediatricsBaylor College of MedicineHoustonUnited States
| | - Keli Xu
- Department of Neurobiology and Anatomical SciencesUniversity of Mississippi Medical CenterJacksonUnited States
| | | | - Susan E Cole
- Department of Molecular GeneticsOhio State UniversityColumbusUnited States
| | - Xiling Shen
- Center for Genomics and Computational Biology, Department of Biomedical EngineeringDuke UniversityDurhamUnited States
- Mienig School of Biomedical EngineeringCornell UniversityIthacaUnited States
- School of Electrical and Computer EngineeringCornell UniversityIthacaUnited States
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170
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Pittaway JFH, Harrison C, Rhee Y, Holder-Espinasse M, Fryer AE, Cundy T, Drake WM, Irving MD. Bisphosphonate therapy for spinal osteoporosis in Hajdu-Cheney syndrome - new data and literature review. Orphanet J Rare Dis 2018; 13:47. [PMID: 29618366 PMCID: PMC5885380 DOI: 10.1186/s13023-018-0795-5] [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: 01/24/2018] [Accepted: 03/27/2018] [Indexed: 01/02/2023] Open
Abstract
Background Hajdu-Cheney syndrome (HCS) (#OMIM 102500) is a rare, autosomal dominant condition that presents in early childhood. It is caused by mutations in the terminal exon of NOTCH2, which encodes the transmembrane NOTCH2 receptor. This pathway is involved in the coupled processes of bone formation and resorption. The skeletal features of HCS include acro-osteolysis of the digits and osteoporosis commonly affecting vertebrae and long bones. Fractures are a prominent feature and are associated with significant morbidity. There is no specific treatment, but with both acro-osteolysis and generalized osteoporosis, it is possible that anti-resorptive treatment might be of benefit. However, to date only a few case reports have evaluated the effectiveness of bisphosphonate treatment. Methods We describe the clinical features, treatment regimens and response to bisphosphonate treatment in 7 newly described patients aged 6–39 with HCS, and pooled the data with that from 8 previously published cases (a total of 17 courses of treatment in 15 individuals). Results The mean lumbar spine bone mineral density (BMD) z-score before treatment was − 2.9 (SD 1.2). In 14 courses of treatment (82%), there was an increase in BMD with bisphosphonate treatment, but the impact (in terms of change in spinal BMD z-score) appeared to be less with advancing age (p = 0.01). There was no evidence that acro-osteolysis was prevented. Conclusions Although individual response is variable and age-related, the data support a role for bisphosphonates in preventing or treating spinal osteoporosis in HCS, but bone loss from the lumbar spine may be rapid after cessation.
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Affiliation(s)
- James F H Pittaway
- Department of Endocrinology, St Bartholomew's Hospital, West Smithfield, London, EC1A 7BE, UK.
| | - Christopher Harrison
- Department of Clinical Genetics, Alder Hey Children's NHS Foundation Trust, E Prescot Rd, Liverpool, L14 5AB, UK
| | - Yumie Rhee
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea
| | - Muriel Holder-Espinasse
- Department of Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, Great Maze Pond, London, SE1 9RT, UK
| | - Alan E Fryer
- Department of Clinical Genetics, Liverpool Women's NHS Foundation Trust, Crown Street, Liverpool, L8 7SS, UK
| | - Tim Cundy
- Department of Medicine, University of Auckland, 85 Park Rd, Grafton, Auckland, 1023, New Zealand
| | - William M Drake
- Department of Endocrinology, St Bartholomew's Hospital, West Smithfield, London, EC1A 7BE, UK
| | - Melita D Irving
- Department of Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, Great Maze Pond, London, SE1 9RT, UK
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171
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Pélisse M, Der Vartanian A, Germot A, Maftah A. Protein O-Glucosyltransferase 1 Expression Influences Formation of Differentiated Myotubes in C2C12 Cell Line. DNA Cell Biol 2018; 37:359-372. [DOI: 10.1089/dna.2017.4052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Mélanie Pélisse
- Université de Limoges, INRA, UMR1061 Génétique Moléculaire Animale, FR 3503 GEIST, Limoges, France
| | - Audrey Der Vartanian
- Université de Limoges, INRA, UMR1061 Génétique Moléculaire Animale, FR 3503 GEIST, Limoges, France
- Faculté de Médecine, INSERM, IMRB U955-E10, Université Paris Est, Créteil, France
| | - Agnès Germot
- Université de Limoges, INRA, UMR1061 Génétique Moléculaire Animale, FR 3503 GEIST, Limoges, France
| | - Abderrahman Maftah
- Université de Limoges, INRA, UMR1061 Génétique Moléculaire Animale, FR 3503 GEIST, Limoges, France
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172
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Zanotti S, Yu J, Adhikari S, Canalis E. Glucocorticoids inhibit notch target gene expression in osteoblasts. J Cell Biochem 2018; 119:6016-6023. [PMID: 29575203 DOI: 10.1002/jcb.26798] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/20/2018] [Indexed: 12/13/2022]
Abstract
Glucocorticoids in excess suppress osteoblast function and cause osteoporosis. We demonstrated that cortisol induces the expression of selected Notch receptors in osteoblasts, revealing a potential mechanism for the skeletal effects of glucocorticoids. However, it remains to be determined whether increased expression of Notch receptors results into enhanced signaling. Following activation of Notch, its intracellular domain (NICD) binds to the DNA-associated protein recombination signal binding protein for immunoglobulin kappa-J region (RBPJ) and induces the expression of target genes such as Hey1, Hey2, and HeyL. To determine whether glucocorticoids modulate Notch signaling in the skeleton, 1 month old wild-type mice were administered prednisolone or placebo and sacrificed after 72 h, and gene expression was analyzed in femoral bone. Prednisolone induced Tsc22d3, a glucocorticoid target gene, and suppressed Hey1 and HeyL expression, which is indicative of inhibited Notch receptor activity or direct Hey downregulation. To determine the mechanisms of Hey suppression, wild-type osteoblast-enriched cells were seeded on the Notch cognate ligand Delta-like (DLL)1 or transfected with constructs expressing the NOTCH1 NICD fragment and exposed to either cortisol or vehicle. Cortisol opposed the induction of mRNA and heterogeneous nuclear RNA for Hey1, Hey2, and HeyL by DLL1, but had no effect on mRNA stability, indicating that glucocorticoids inhibit Hey expression by transcriptional mechanisms. Transactivation studies and electrophoretic mobility shift assays revealed that cortisol did not oppose RBPJ-mediated transcription or RBPJ/DNA interactions, respectively. In conclusion, glucocorticoids suppress expression of Hey1, Hey2, and HeyL in osteoblasts by RBPJ-independent transcriptional mechanisms.
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Affiliation(s)
- Stefano Zanotti
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,Department of Medicine, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | - Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | | | - Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,Department of Medicine, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
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Wang Y, Wang H, Ge H, Yang Z. AG‐1031 induced autophagic cell death and apoptosis in C6 glioma cells associated with Notch‐1 signaling pathway. J Cell Biochem 2018; 119:5893-5903. [DOI: 10.1002/jcb.26781] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/02/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Yan Wang
- Medical School, State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials for Ministry of EducationNankai UniversityTianjinChina
| | - Hui Wang
- College of Life SciencesNankai UniversityTianjinChina
| | - Hui Ge
- AscentGene, Inc.GaithersburgMD
| | - Zhuo Yang
- Medical School, State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials for Ministry of EducationNankai UniversityTianjinChina
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174
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Notch signaling and neuronal death in stroke. Prog Neurobiol 2018; 165-167:103-116. [PMID: 29574014 DOI: 10.1016/j.pneurobio.2018.03.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 02/08/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
Ischemic stroke is a leading cause of morbidity and death, with the outcome largely determined by the amount of hypoxia-related neuronal death in the affected brain regions. Cerebral ischemia and hypoxia activate the Notch1 signaling pathway and four prominent interacting pathways (NF-κB, p53, HIF-1α and Pin1) that converge on a conserved DNA-associated nuclear multi-protein complex, which controls the expression of genes that can determine the fate of neurons. When neurons experience a moderate level of ischemic insult, the nuclear multi-protein complex up-regulates adaptive stress response genes encoding proteins that promote neuronal survival, but when ischemia is more severe the nuclear multi-protein complex induces genes encoding proteins that trigger and execute a neuronal death program. We propose that the nuclear multi-protein transcriptional complex is a molecular mediator of neuronal hormesis and a target for therapeutic intervention in stroke.
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175
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Wang X, Hao B, Xu C, Zhao X, Liu C, Chu X, Lv Y, Zhao Y, Zhang S, Wang P, Wang Y. Involvement of erbB4 and tumor marker genes in renal carcinoma regulatory network. Saudi J Biol Sci 2018; 24:1787-1791. [PMID: 29551924 PMCID: PMC5851941 DOI: 10.1016/j.sjbs.2017.11.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 12/25/2022] Open
Abstract
Background Renal carcinoma is a common urologic tumor, and there is no ideal tumor marker for clinical diagnosis except for imaging diagnosis. This study aims to screen the serum tumor markers closely related with the benign and malignant of renal carcinoma out and chart out the regulatory network that involves renal carcinoma-related genes. Methods Based on 96 pathologically diagnosed renal cancer patients, factors strongly linked to renal carcinoma character were selected using Fisher discriminant analysis. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases were utilized to manipulate function annotation of erbB4 and the selected genes and pathway analysis. Results Four essential tumor markers CYFRA21-1, CA125, VHL and HIF-1β were successfully screened out. Using GO and KEGG databases, the regulatory network of renal cancer cell escaping apoptosis was charted out on the basis of erbB4 signaling pathway. Conclusion Serum tumor marker genes play a certain part in the genesis and development of renal carcinoma. We preliminarily illustrated the molecular mechanism of these markers to predict tumor, laying a foundation for further exploration in renal carcinoma.
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Affiliation(s)
- Xiaofu Wang
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Bin Hao
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Changbao Xu
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Xinghua Zhao
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Changwei Liu
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Xiaohan Chu
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Yuan Lv
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Yongli Zhao
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Shengwei Zhang
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Pengsen Wang
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
| | - Youzhi Wang
- The Second Affiliated Hospital of Zhengzhou University (Institute of Urinary Surgery of Zhengzhou University; the Calculosis Diagnostic and Therapeutic Center of Henan Province), China
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Yu J, Zanotti S, Schilling L, Schoenherr C, Economides AN, Sanjay A, Canalis E. Induction of the Hajdu-Cheney Syndrome Mutation in CD19 B Cells in Mice Alters B-Cell Allocation but Not Skeletal Homeostasis. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1430-1446. [PMID: 29545197 DOI: 10.1016/j.ajpath.2018.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 02/09/2018] [Accepted: 02/27/2018] [Indexed: 01/19/2023]
Abstract
Mice harboring Notch2 mutations replicating Hajdu-Cheney syndrome (Notch2tm1.1ECan) have osteopenia and exhibit an increase in splenic marginal zone B cells with a decrease in follicular B cells. Whether the altered B-cell allocation is responsible for the osteopenia of Notch2tm1.1ECan mutants is unknown. To determine the effect of NOTCH2 activation in B cells on splenic B-cell allocation and skeletal phenotype, a conditional-by-inversion (COIN) Hajdu-Cheney syndrome allele of Notch2 (Notch2[ΔPEST]COIN) was used. Cre recombination generates a permanent Notch2ΔPEST allele expressing a transcript for which sequences coding for the proline, glutamic acid, serine, and threonine-rich (PEST) domain are replaced by a stop codon. CD19-Cre drivers were backcrossed into Notch2[ΔPEST]COIN/[ΔPEST]COIN to generate CD19-specific Notch2ΔPEST/ΔPEST mutants and control Notch2[ΔPEST]COIN/[ΔPEST]COIN littermates. There was an increase in marginal zone B cells and a decrease in follicular B cells in the spleen of CD19Cre/WT;Notch2ΔPEST/ΔPEST mice, recapitulating the splenic phenotype of Notch2tm1.1ECan mice. The effect was reproduced when the NOTCH1 intracellular domain was induced in CD19-expressing cells (CD19Cre/WT;RosaNotch1/WT mice). However, neither CD19Cre/WT;Notch2ΔPEST/ΔPEST nor CD19Cre/WT;RosaNotch1/WT mice had a skeletal phenotype. Moreover, splenectomies in Notch2tm1.1ECan mice did not reverse their osteopenic phenotype. In conclusion, Notch2 activation in CD19-expressing cells determines B-cell allocation in the spleen but has no skeletal consequences.
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Affiliation(s)
- Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | - Stefano Zanotti
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut; Department of Medicine, UConn Health, Farmington, Connecticut
| | - Lauren Schilling
- UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | - Chris Schoenherr
- Genome Engineering Technologies, Regeneron Pharmaceuticals, Tarrytown, New York
| | - Aris N Economides
- Genome Engineering Technologies, Regeneron Pharmaceuticals, Tarrytown, New York
| | - Archana Sanjay
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut.
| | - Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut; Department of Medicine, UConn Health, Farmington, Connecticut.
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177
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Meyers JM, Grace M, Uberoi A, Lambert PF, Munger K. Inhibition of TGF-β and NOTCH Signaling by Cutaneous Papillomaviruses. Front Microbiol 2018; 9:389. [PMID: 29568286 PMCID: PMC5852067 DOI: 10.3389/fmicb.2018.00389] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 02/20/2018] [Indexed: 12/12/2022] Open
Abstract
Infections with cutaneous papillomaviruses have been linked to cutaneous squamous cell carcinomas that arise in patients who suffer from a rare genetic disorder, epidermodysplasia verruciformis, or those who have experienced long-term, systemic immunosuppression following organ transplantation. The E6 proteins of the prototypical cutaneous human papillomavirus (HPV) 5 and HPV8 inhibit TGF-β and NOTCH signaling. The Mus musculus papillomavirus 1, MmuPV1, infects laboratory mouse strains and causes cutaneous skin warts that can progress to squamous cell carcinomas. MmuPV1 E6 shares biological and biochemical activities with HPV8 E6 including the ability to inhibit TGF-β and NOTCH signaling by binding the SMAD2/SMAD3 and MAML1 transcription factors, respectively. Inhibition of TGF-β and NOTCH signaling is linked to delayed differentiation and sustained proliferation of differentiating keratinocytes. Furthermore, the ability of MmuPV1 E6 to bind MAML1 is necessary for wart and cancer formation in experimentally infected mice. Hence, experimental MmuPV1 infection in mice will be a robust and valuable experimental system to dissect key aspects of cutaneous HPV infection, pathogenesis, and carcinogenesis.
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Affiliation(s)
- Jordan M Meyers
- Program in Virology, Harvard Medical School, Boston, MA, United States.,Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, United States
| | - Miranda Grace
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, United States
| | - Aayushi Uberoi
- McArdle Laboratory for Cancer Research, Department of Oncology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Paul F Lambert
- McArdle Laboratory for Cancer Research, Department of Oncology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Karl Munger
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, United States
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178
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Canalis E. Clinical and experimental aspects of notch receptor signaling: Hajdu-Cheney syndrome and related disorders. Metabolism 2018; 80:48-56. [PMID: 28941602 PMCID: PMC5818282 DOI: 10.1016/j.metabol.2017.08.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/04/2017] [Accepted: 08/13/2017] [Indexed: 01/04/2023]
Abstract
BACKGROUND There are four Notch transmembrane receptors that determine the fate and function of cells. Notch is activated following its interactions with ligands of the Jagged and Delta-like families that lead to the cleavage and release of the Notch intracellular domain (NICD); this translocates to the nucleus to induce the transcription of Notch target genes. Genetic disorders of loss- and gain-of-NOTCH function present with severe clinical manifestations. BASIC PROCEDURES In this article, current knowledge of Hajdu Cheney Syndrome (HCS) and related disorders is reviewed. MAIN FINDINGS HCS is a rare genetic disorder characterized by acroosteolysis, fractures, short stature, neurological manifestations, craniofacial developmental abnormalities, cardiovascular defects and polycystic kidneys. HCS is associated with NOTCH2 gain-of-function mutations. An experimental mouse model of the disease revealed that the bone loss is secondary to increased osteoclastogenesis and bone resorption due to enhanced expression of receptor activator of nuclear factor kappa B ligand (Rankl). This would suggest that inhibitors of bone resorption might prove to be beneficial in the treatment of the bone loss associated with HCS. Notch2 is a determinant of B-cell allocation in the marginal zone of the spleen and "somatic" mutations analogous to those found in HCS are associated with B-cell lymphomas of the marginal zone, but there are no reports of lymphomas associated with HCS. CONCLUSION In conclusion, HCS is a serious genetic disorder associated with NOTCH2 mutations. New experimental models have offered insight on mechanisms responsible for the manifestations of HCS.
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Affiliation(s)
- Ernesto Canalis
- Department of Orthopaedic Surgery, the UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, USA; Department of Medicine, the UConn Musculoskeletal Institute, UConn Health, Farmington, CT 06030, USA.
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179
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Asnaghi L, Tripathy A, Yang Q, Kaur H, Hanaford A, Yu W, Eberhart CG. Targeting Notch signaling as a novel therapy for retinoblastoma. Oncotarget 2018; 7:70028-70044. [PMID: 27661116 PMCID: PMC5342532 DOI: 10.18632/oncotarget.12142] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 09/14/2016] [Indexed: 01/15/2023] Open
Abstract
Retinoblastoma is the most common intraocular malignancy of childhood. Notch plays a key role in retinal cells from which retinoblastomas arise, and we therefore studied the role of Notch signaling in promoting retinoblastoma proliferation. Moderate or strong nuclear expression of Hes1 was found in 10 of 11 human retinoblastoma samples analyzed immunohistochemically, supporting a role for Notch in retinoblastoma growth. Notch pathway components were present in WERI Rb1 and Y79 retinoblastoma lines, with Jag2 and DLL4 more highly expressed than other ligands, and Notch1 and Notch2 more abundant than Notch3. The cleaved/active form of Notch1 was detectable in both lines. Inhibition of the pathway, achieved using a γ-secretase inhibitor (GSI) or by downregulating Jag2, DLL4 or CBF1 using short hairpin RNA, potently reduced growth, proliferation and clonogenicity in both lines. Upregulation of CXCR4 and CXCR7 and downregulation of PI3KC2β were identified by microarray upon Jag2 suppression. The functional importance of PI3KC2β was confirmed using shRNA. Synergy was found by combining GSI with Melphalan at their IC50. These findings indicate that Notch pathway is active in WERI Rb1 and Y79, and in most human retinoblastoma samples, and suggest that Notch antagonists may represent a new approach to more effectively treat retinoblastoma.
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Affiliation(s)
- Laura Asnaghi
- Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Arushi Tripathy
- Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Qian Yang
- Department of Ophthalmology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Harpreet Kaur
- Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Allison Hanaford
- Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Wayne Yu
- Microarray Core Facility, Sidney Kimmel Cancer Center, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Charles G Eberhart
- Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA.,Department of Ophthalmology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA.,Department of Oncology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
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180
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Fanconi anemia core complex-dependent HES1 mono-ubiquitination regulates its transcriptional activity. BMC Res Notes 2018; 11:138. [PMID: 29463306 PMCID: PMC5819684 DOI: 10.1186/s13104-018-3243-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/09/2018] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE The Hairy Enhancer of Split 1 (HES1) is a transcriptional repressor that regulates cellular proliferation and differentiation during development. We previously found an interaction between HES1 and Fanconi anemia (FA) proteins. FA is a hematological and developmental disorder caused by mutations in more than 20 different genes. Eight FA gene products form a nuclear core complex containing E3 ligase activity required for mono-ubiquitination of FANCD2 and FANCI, both of which are FA proteins. Given that HES1 interacts with members of the FA core complex, the aim of this study was to determine whether HES1 is mono-ubiquitinated via the FA core complex. RESULTS We show that HES1 is mono-ubiquitinated on a highly-conserved lysine residue that is located within a FA-like recognition motif. HES1 modification is dependent on a functional FA complex. Absence of HES1 mono-ubiquitination affects transcriptional repression of its own promoter. This study uncovers a novel post-translational modification of HES1 that regulates its transcriptional activity and suggests that ubiquitination of HES1 occurs in a FA core complex-dependent manner.
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181
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Li X, Cao Y, Li M, Jin F. Upregulation of HES1 Promotes Cell Proliferation and Invasion in Breast Cancer as a Prognosis Marker and Therapy Target via the AKT Pathway and EMT Process. J Cancer 2018; 9:757-766. [PMID: 29556333 PMCID: PMC5858497 DOI: 10.7150/jca.22319] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/03/2017] [Indexed: 12/16/2022] Open
Abstract
HES1 is a transcriptional repressor involved in cell differentiation and proliferation as well as in various cancer developments, but its expression pattern and biological roles in breast cancer have not been examined. In this study, we assessed HES1 expression in breast cancer tissues using immunohistochemistry and Western blot analyses and investigated HES1 function using MTT and Matrigel invasion assays. Significant relationships were observed between HES1 upregulation and advanced TNM stage (p=0.011), node metastasis (p=0.043), negative oestrogen receptor expression (p=0.001) and triple-negative status (p=0.001). HES1 overexpression was correlated with poor prognosis in breast cancer patients (p<0.05). The MTT and Matrigel invasion assays showed that silencing HES1 in MDA-MB-231 cells decreased cell proliferation and invasion, whereas overexpression of HES1 in MCF-7 cells enhanced its proliferation and invasion. Further analyses showed that silencing HES1 downregulated p-AKT and impeded epithelial-mesenchymal transition (EMT), whereas overexpression of HES1 upregulated AKT phosphorylation and induced EMT. Our study demonstrated that HES1 upregulation is a predictor of poor prognosis in human breast cancers and might be a critical contributor to the proliferation and invasion of breast cancer cells. Moreover, the proportion of cells with overexpression of HES1 in triple-negative breast cancer (TNBC) samples was significantly higher. Thus, HES1 might be a potential therapeutic target in the treatment of TNBC.
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Affiliation(s)
- Xiaoying Li
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yu Cao
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Mu Li
- Department of General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Feng Jin
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
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182
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Notch signaling regulates Hey2 expression in a spatiotemporal dependent manner during cardiac morphogenesis and trabecular specification. Sci Rep 2018; 8:2678. [PMID: 29422515 PMCID: PMC5805758 DOI: 10.1038/s41598-018-20917-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 01/25/2018] [Indexed: 12/13/2022] Open
Abstract
Hey2 gene mutations in both humans and mice have been associated with multiple cardiac defects. However, the currently reported localization of Hey2 in the ventricular compact zone cannot explain the wide variety of cardiac defects. Furthermore, it was reported that, in contrast to other organs, Notch doesn’t regulate Hey2 in the heart. To determine the expression pattern and the regulation of Hey2, we used novel methods including RNAscope and a Hey2CreERT2 knockin line to precisely determine the spatiotemporal expression pattern and level of Hey2 during cardiac development. We found that Hey2 is expressed in the endocardial cells of the atrioventricular canal and the outflow tract, as well as at the base of trabeculae, in addition to the reported expression in the ventricular compact myocardium. By disrupting several signaling pathways that regulate trabeculation and/or compaction, we found that, in contrast to previous reports, Notch signaling and Nrg1/ErbB2 regulate Hey2 expression level in myocardium and/or endocardium, but not its expression pattern: weak expression in trabecular myocardium and strong expression in compact myocardium. Instead, we found that FGF signaling regulates the expression pattern of Hey2 in the early myocardium, and regulates the expression level of Hey2 in a Notch1 dependent manner.
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183
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Reicher A, Foßelteder J, Kwong LN, Pichler M. Crosstalk between the Notch signaling pathway and long non-coding RNAs. Cancer Lett 2018; 420:91-96. [PMID: 29409809 DOI: 10.1016/j.canlet.2018.01.070] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/18/2018] [Accepted: 01/26/2018] [Indexed: 01/17/2023]
Abstract
The Notch signaling pathway has a key role in cellular development and is involved in initiation and progression of cancer by fundamentally influencing cellular processes such as differentiation, proliferation or migration. The pathway is regulated on many stages, generating diverse outcomes depending on cellular context or signaling dose. Recent studies suggest that long non-coding RNAs (lncRNAs), a class of non-coding RNAs deregulated in many cancers, are involved in regulating the Notch pathway activity by modulating the expression of receptors or ligands on transcriptional or posttranscriptional levels. LncRNAs are also downstream targets of Notch signaling and some of these Notch-induced lncRNAs have been reported to be inducers of its oncogenic effects. This cross-talk between Notch signaling and lncRNAs makes those molecules potential biomarkers for Notch signaling activity and interesting therapeutic RNA-based targets in the future.
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Affiliation(s)
- Andreas Reicher
- Division of Oncology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; Research Unit of Non-Coding RNA and Genome Editing in Cancer, Medical University of Graz, 8036 Graz, Austria; Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Johannes Foßelteder
- Division of Oncology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; Research Unit of Non-Coding RNA and Genome Editing in Cancer, Medical University of Graz, 8036 Graz, Austria
| | - Lawrence N Kwong
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Martin Pichler
- Division of Oncology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; Research Unit of Non-Coding RNA and Genome Editing in Cancer, Medical University of Graz, 8036 Graz, Austria; Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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184
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Elian FA, Yan E, Walter MA. FOXC1, the new player in the cancer sandbox. Oncotarget 2018; 9:8165-8178. [PMID: 29487724 PMCID: PMC5814291 DOI: 10.18632/oncotarget.22742] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 10/28/2017] [Indexed: 01/01/2023] Open
Abstract
In recent years, rapidly accumulating evidence implicates forkhead box C1 (FOXC1) in cancer, especially in studies of basal-like breast cancer (BLBC). Other studies have followed suit, demonstrating that FOXC1 is not only a major player in this breast cancer subtype, but also in hepatocellular carcinoma (HCC), endometrial cancer, Hodgkin's lymphoma (HL), and non-Hodgkin's lymphoma (NHL). The FOXC1 gene encodes a transcription factor that is crucial to mesodermal, neural crest, and ocular development, and mutations found in FOXC1 have been found to cause dominantly inherited Axenfeld-Rieger Syndrome (ARS). Interestingly, while FOXC1 missense mutations that are associated with ARS usually reduce gene activity, increased FOXC1 function now appears to be often linked to more aggressive cancer phenotypes in BLBC, HCC, HL, and NHL. This review discusses not only the role of FOXC1 in cancer cell progression, proliferation, differentiation, and metastasis, but also the underlying mechanisms of how FOXC1 can contribute to aggressive cancer phenotypes.
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Affiliation(s)
- Fahed A. Elian
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Elizabeth Yan
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Michael A. Walter
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
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Gaetani P, Hulleman E, Levi D, Quarto M, Scorsetti M, Helin K, Simonelli M, Colombo P, Baena RRY. Expression of the Transcription Factor HEY1 in Glioblastoma: A Preliminary Clinical Study. TUMORI JOURNAL 2018; 96:97-102. [DOI: 10.1177/030089161009600116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aims and background The hairy/enhancer of split (E(spl))-related family of transcription factors (HES and HEY) are established targets of the notch signaling pathway, which has been implicated in different developmental processes, tumor formation and the self-renewal of neural stem cells. We determined the expression of HEY1 in human malignant gliomas to investigate whether its expression might be related to prognosis. Methods The expression of HEY1 was studied by in situ hybridization on 62 cases of glioblastoma. Patients were treated with surgery followed by chemotherapy and radiotherapy. We considered as end points of the study the overall survival time and progression-free interval. Correlations between HEY1 expression and tumor grade/patient overall survival and free interval before recurrence were analyzed using univariate analysis. Results Based on the in situ hybridization results, HEY1 expression rate was reported as negative staining in 13 cases (20.6%), as weak staining in 11 cases (17.3%), as moderate staining in 21 cases (33.3%), and as strong staining in 17 cases. We considered in the analysis the cumulative expression of HEY1 at in situ hybridization (Hey Index) as negative in 13 cases and positive in 49 cases (77.78%). The overall survival (P = 0.002) and the free-interval (P = 0.012) were significantly longer in patients who were negative for HEY1 expression. Conclusions Our data suggest that expression of HEY1 might be used as a marker to distinguish glioblastoma patients with a relatively good prognosis from those at high-risk, and that, in the future, HEY1 might represent a therapeutic target.
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Affiliation(s)
- Paolo Gaetani
- Department of Neurosurgery, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | | | - Daniel Levi
- Department of Neurosurgery, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | | | - Marta Scorsetti
- Department of Radiotherapy, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | - Kristian Helin
- Biotech Research and Innovation Centre and Centre for Epigenetics, University of Copenhagen, Copenhagen, Denmark
| | - Matteo Simonelli
- Department of Oncology, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
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Panaliappan TK, Wittmann W, Jidigam VK, Mercurio S, Bertolini JA, Sghari S, Bose R, Patthey C, Nicolis SK, Gunhaga L. Sox2 is required for olfactory pit formation and olfactory neurogenesis through BMP restriction and Hes5 upregulation. Development 2018; 145:145/2/dev153791. [PMID: 29352015 PMCID: PMC5825848 DOI: 10.1242/dev.153791] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 12/11/2017] [Indexed: 12/26/2022]
Abstract
The transcription factor Sox2 is necessary to maintain pluripotency of embryonic stem cells, and to regulate neural development. Neurogenesis in the vertebrate olfactory epithelium persists from embryonic stages through adulthood. The role Sox2 plays for the development of the olfactory epithelium and neurogenesis within has, however, not been determined. Here, by analysing Sox2 conditional knockout mouse embryos and chick embryos deprived of Sox2 in the olfactory epithelium using CRISPR-Cas9, we show that Sox2 activity is crucial for the induction of the neural progenitor gene Hes5 and for subsequent differentiation of the neuronal lineage. Our results also suggest that Sox2 activity promotes the neurogenic domain in the nasal epithelium by restricting Bmp4 expression. The Sox2-deficient olfactory epithelium displays diminished cell cycle progression and proliferation, a dramatic increase in apoptosis and finally olfactory pit atrophy. Moreover, chromatin immunoprecipitation data show that Sox2 directly binds to the Hes5 promoter in both the PNS and CNS. Taken together, our results indicate that Sox2 is essential to establish, maintain and expand the neuronal progenitor pool by suppressing Bmp4 and upregulating Hes5 expression. Summary: Analysis of Sox2 mutant mouse and Sox2 CRISPR-targeted chick embryos reveals that Sox2 controls the establishment of sensory progenitors in the olfactory epithelium by suppressing Bmp4 and upregulating Hes5 expression.
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Affiliation(s)
| | - Walter Wittmann
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Vijay K Jidigam
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Sara Mercurio
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Jessica A Bertolini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Soufien Sghari
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Raj Bose
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Cedric Patthey
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Silvia K Nicolis
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Lena Gunhaga
- Umeå Centre for Molecular Medicine, Umeå University, 901 87 Umeå, Sweden
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187
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Notch signaling: its roles and therapeutic potential in hematological malignancies. Oncotarget 2018; 7:29804-23. [PMID: 26934331 PMCID: PMC5045435 DOI: 10.18632/oncotarget.7772] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/11/2016] [Indexed: 01/07/2023] Open
Abstract
Notch is a highly conserved signaling system that allows neighboring cells to communicate, thereby controlling their differentiation, proliferation and apoptosis, with the outcome of its activation being highly dependent on signal strength and cell type. As such, there is growing evidence that disturbances in physiological Notch signaling contribute to cancer development and growth through various mechanisms. Notch was first reported to contribute to tumorigenesis in the early 90s, through identification of the involvement of the Notch1 gene in the chromosomal translocation t(7;9)(q34;q34.3), found in a small subset of T-cell acute lymphoblastic leukemia. Since then, Notch mutations and aberrant Notch signaling have been reported in numerous other precursor and mature hematological malignancies, of both myeloid and lymphoid origin, as well as many epithelial tumor types. Of note, Notch has been reported to have both oncogenic and tumor suppressor roles, dependent on the cancer cell type. In this review, we will first give a general description of the Notch signaling pathway, and its physiologic role in hematopoiesis. Next, we will review the role of aberrant Notch signaling in several hematological malignancies. Finally, we will discuss current and potential future therapeutic approaches targeting this pathway.
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188
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Strug MR, Su RW, Kim TH, Mauriello A, Ticconi C, Lessey BA, Young SL, Lim JM, Jeong JW, Fazleabas AT. RBPJ mediates uterine repair in the mouse and is reduced in women with recurrent pregnancy loss. FASEB J 2018; 32:2452-2466. [PMID: 29242273 DOI: 10.1096/fj.201701032r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Unexplained recurrent pregnancy loss (uRPL) is associated with repeated embryo loss and endometrial repair with elevated endometrial expression of inflammatory cytokines, including IFN-γ. Notch signaling through its transcription factor recombination signal binding protein Jκ (RBPJ) regulates mechanisms including the immune response and repair after tissue injury. Initially, null mutation of RBPJ in the mouse uterus ( Pgrcre/+Rbpjf/f; Rbpj c-KO) results in subfertility, but we have found that these mice become infertile after pregnancy as a result of dysfunctional postpartum uterine repair, including delayed endometrial epithelial and myometrial regeneration. RNA sequencing of postpartum uterine repair sites revealed global up-regulation of inflammatory pathways, including IFN signaling. Consistent with elevated IFN-γ, macrophages were recruited and polarized toward an M1-cytotoxic phenotype, which is associated with preventing repair and promoting further tissue injury. Through embryo transfer experiments, we show that dysfunctional postpartum repair directly impairs future embryo implantation in Rbpj c-KO mice. Last, we clinically correlated our findings from the Rbpj c-KO mouse in women diagnosed with uRPL. Reduced RBPJ in women with uRPL was associated with increased levels of IFN-γ. The data, taken together, indicate that RBPJ regulates inflammation during endometrial repair, which is essential for future pregnancy potential, and its dysregulation may serve as an unidentified contributor to uRPL in women.-Strug, M. R., Su, R.-W., Kim, T. H., Mauriello, A., Ticconi, C., Lessey, B. A., Young, S. L., Lim, J. M., Jeong, J.-W., Fazleabas, A. T. RBPJ mediates uterine repair in the mouse and is reduced in women with recurrent pregnancy loss.
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Affiliation(s)
- Michael R Strug
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA
| | - Ren-Wei Su
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA.,College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Tae Hoon Kim
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA
| | - Alessandro Mauriello
- Section of Gynecology and Obstetrics, Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Carlo Ticconi
- Section of Gynecology and Obstetrics, Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Bruce A Lessey
- Department of Obstetrics and Gynecology, Greenville Health System, Greenville, South Carolina, USA
| | - Steven L Young
- Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jeong Mook Lim
- World Class University (WCU) Biomodulation, Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA
| | - Asgerally T Fazleabas
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA
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189
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Bigas A, Porcheri C. Notch and Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1066:235-263. [DOI: 10.1007/978-3-319-89512-3_12] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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190
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Hey1 and Hey2 are differently expressed during mouse tooth development. Gene Expr Patterns 2018; 27:99-105. [DOI: 10.1016/j.gep.2017.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 11/20/2022]
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191
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Vollersen N, Hermans-Borgmeyer I, Cornils K, Fehse B, Rolvien T, Triviai I, Jeschke A, Oheim R, Amling M, Schinke T, Yorgan TA. High Bone Turnover in Mice Carrying a Pathogenic Notch2 Mutation Causing Hajdu-Cheney Syndrome. J Bone Miner Res 2018; 33:70-83. [PMID: 28856714 DOI: 10.1002/jbmr.3283] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/09/2017] [Accepted: 08/27/2017] [Indexed: 01/08/2023]
Abstract
Hajdu-Cheney syndrome (HCS) is a rare autosomal-dominant disorder primarily characterized by acro-osteolysis and early-onset osteoporosis. Genetically, HCS is caused by nonsense or deletion mutations within exon 34 of the NOTCH2 gene, resulting in premature translational termination and production of C-terminally truncated NOTCH2 proteins that are predicted to activate NOTCH2-dependent signaling. To understand the role of Notch2 in bone remodeling, we developed a mouse model of HCS by introducing a pathogenic mutation (6272delT) into the murine Notch2 gene. By μCT and undecalcified histology, we observed generalized osteopenia in two independent mouse lines derived by injection of different targeted embryonic stem (ES) cell clones, yet acro-osteolysis did not occur until the age of 52 weeks. Cellular and dynamic histomorphometry revealed a high bone turnover situation in Notch2+/HCS mice, since osteoblast and osteoclast indices were significantly increased compared with wild-type littermates. Whereas ex vivo cultures failed to uncover cell-autonomous gain-of-functions within the osteoclast or osteoblast lineage, an unbiased RNA sequencing approach identified Tnfsf11 and Il6 as Notch-signaling target genes in bone marrow cells cultured under osteogenic conditions. Because we further observed that the high-turnover pathology of Notch2+/HCS mice was fully normalized by alendronate treatment, our results demonstrate that mutational activation of Notch2 does not directly control osteoblast activity but favors a pro-osteoclastic gene expression pattern, which in turn triggers high bone turnover. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Nele Vollersen
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Irm Hermans-Borgmeyer
- Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kerstin Cornils
- Research Department Cell and Gene Therapy, Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Boris Fehse
- Research Department Cell and Gene Therapy, Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Rolvien
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ioanna Triviai
- Clinic for Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Oheim
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timur Alexander Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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192
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Alfred V, Vaccari T. Mechanisms of Non-canonical Signaling in Health and Disease: Diversity to Take Therapy up a Notch? ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1066:187-204. [PMID: 30030827 DOI: 10.1007/978-3-319-89512-3_9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Non-canonical Notch signaling encompasses a wide range of cellular processes, diverging considerably from the established paradigm. It can dispense of ligand, proteolytic or nuclear activity. Non-canonical Notch signaling events have been studied mostly in the fruit fly Drosophila melanogaster, the organism in which Notch was identified first and a powerful model for understanding signaling outcomes. However, non-canonical events are ill-defined and their involvement in human physiology is not clear, hampering our understanding of diseases arising from Notch signaling alterations. At a time in which therapies based on specific targeting of Notch signaling are still an unfulfilled promise, detailed understanding of non-canonical Notch events might be key to devising more specific and less toxic pharmacologic options. Based on the blueprint of non-canonical signaling in Drosophila, here, we review and rationalize current evidence about non-canonical Notch signaling. Our effort might inform Notch biologists developing new research avenues and clinicians seeking future treatment of Notch-dependent diseases.
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Affiliation(s)
- Victor Alfred
- IFOM, Istituto FIRC di Oncologia Molecolare at IFOM-IEO Campus, Milan, Italy
| | - Thomas Vaccari
- IFOM, Istituto FIRC di Oncologia Molecolare at IFOM-IEO Campus, Milan, Italy.
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy.
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193
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Chun P. Therapeutic effects of histone deacetylase inhibitors on kidney disease. Arch Pharm Res 2017; 41:162-183. [PMID: 29230688 DOI: 10.1007/s12272-017-0998-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/26/2017] [Indexed: 12/12/2022]
Abstract
Increasing evidence has shown the involvement of histone deacetylases (HDACs) in the development and progression of various renal diseases, highlighting its inhibition as a promising therapeutic strategy to prevent kidney diseases. Accordingly, numerous studies have shown that HDAC inhibitors protect the kidneys from various diseases through their effects on multiple pathways, such as suppression of transforming growth factor-β signaling pathway and nuclear factor-κB signaling pathways, augmentation of apoptosis, and inhibition of angiogenesis. To develop more effective and less toxic isoform-selective HDAC inhibitors and further improve clinical outcomes, it is necessary to identify and understand the mechanisms involved in the pathogenesis and progression of renal diseases. This review focuses on the roles of HDAC inhibitors and the mechanisms involved in their therapeutic effects in experimental models of kidney diseases including glomerulosclerosis, tubulointerstitial fibrosis, glomerular and tubulointerstitial inflammation, lupus nephritis, polycystic kidney disease, and renal cell carcinoma (RCC).
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Affiliation(s)
- Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam, 50834, Republic of Korea.
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194
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Yin X, Zeng Z, Xing J, Zhang A, Jiang W, Wang W, Sun H, Ni L. Hey1 functions as a positive regulator of odontogenic differentiation in odontoblast‑lineage cells. Int J Mol Med 2017; 41:331-339. [PMID: 29138798 PMCID: PMC5746322 DOI: 10.3892/ijmm.2017.3254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 10/31/2017] [Indexed: 11/06/2022] Open
Abstract
Substantial evidence has indicated that Notch and bone morphogenetic protein (BMP) signaling may regulate odontoblastic differentiation. Hairy/enhancer‑of‑split related with YRPW motif 1 (Hey1), a downstream target gene of Notch and BMP signaling, is expressed in dental pulp tissues and has been demonstrated to be responsible for osteoblast mineralization. The aim of this study was to investigate the effects of Hey1 on odontoblast differentiation. The results of the study demonstrated that Hey1 expression in odontoblast‑lineage cells (OLCs) was upregulated by stimulation of osteoblastic/odontoblastic differentiation medium containing ascorbic acid, β‑glycerol phosphate and dexamethasone. Furthermore, stable Hey1‑overexpressing cells expressed higher levels of dentin sialophosphoprotein (DSPP) and exhibited higher mineralization capabilities following stimulation by differentiation medium. Furthermore, RNA interference‑mediated knockdown of Hey1 downregulated the expression levels of DSPP in OLCs stimulated by differentiation medium. Taken together, the findings indicate that Hey1 may be a positive regulator of odontoblastic differentiation. The present study broadens the understanding of odontoblast differentiation and biomineralization.
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Affiliation(s)
- Xiao Yin
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhaobin Zeng
- Department of Stomatology, General Hospital of Shenyang Military Area Command, Shenyang, Liaoning 110015, P.R. China
| | - Jinliang Xing
- Preclinical Medical Teaching Experimental Center, School of Basic Medical Sciences, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Ansheng Zhang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wenkai Jiang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wei Wang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Hantang Sun
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Longxing Ni
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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195
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Zhang H, Jiang H, Chen L, Liu J, Hu X, Zhang H. Inhibition of Notch1/Hes1 signaling pathway improves radiosensitivity of colorectal cancer cells. Eur J Pharmacol 2017; 818:364-370. [PMID: 29126793 DOI: 10.1016/j.ejphar.2017.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/19/2017] [Accepted: 11/06/2017] [Indexed: 12/16/2022]
Abstract
Notch signaling pathway has been demonstrated to mediate radioresistance of several tumors. Our study aims to explore the function of Notch1/HES1 pathway in the radioresistance of colorectal cancer (CRC). The results demonstrated that expressions of Notch1 and Hes1 were up-regulated with the increasing irradiation dose. DAPT (N-[(3,5-difluorophenacetyl)acety1]-L-alanyl-2-phenyl]glycine-1,1-dimethylethyl ester) or si-Notch1 reduced expressions of Notch1 and Hes1, exacerbated irradiation-induced cell proliferation inhibition, and improved radiosensitivity of CRC cells. Moreover, DAPT or si-Notch1 increased radiation-induced DNA damage and attenuated radiation-triggered DNA-PK activity. Furthermore, xenograft in nude mice demonstrated that co-treated with DAPT and irradiation could inhibited tumor growth additively in vivo. Taken together, inhibition of Notch1/Hes1 signaling pathway enhances radiosensitivity of CRC cells, providing a potential therapeutic target to improve the therapeutic effect of radiotherapy for CRC patients.
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Affiliation(s)
- Hongzhi Zhang
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China.
| | - Huijuan Jiang
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Lei Chen
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Juncai Liu
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Xigang Hu
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Huixiang Zhang
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475000, China
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196
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Gomi K, Staudt MR, Salit J, Kaner RJ, Heldrich J, Rogalski AM, Arbelaez V, Crystal RG, Walters MS. JAG1-Mediated Notch Signaling Regulates Secretory Cell Differentiation of the Human Airway Epithelium. Stem Cell Rev Rep 2017; 12:454-63. [PMID: 27216293 DOI: 10.1007/s12015-016-9656-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Basal cells (BC) are the stem/progenitor cells of the human airway epithelium capable of differentiating into secretory and ciliated cells. Notch signaling activation increases BC differentiation into secretory cells, but the role of individual Notch ligands in regulating this process in the human airway epithelium is largely unknown. The objective of this study was to define the role of the Notch ligand JAG1 in regulating human BC differentiation. JAG1 over-expression in BC increased secretory cell differentiation, with no effect on ciliated cell differentiation. Conversely, knockdown of JAG1 decreased expression of secretory cell genes. These data demonstrate JAG1-mediated Notch signaling regulates differentiation of BC into secretory cells.
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Affiliation(s)
- Kazunori Gomi
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Michelle R Staudt
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Jacqueline Salit
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Robert J Kaner
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Jonna Heldrich
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Allison M Rogalski
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Vanessa Arbelaez
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Ronald G Crystal
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA
| | - Matthew S Walters
- Department of Genetic Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 164, New York, NY, 10065, USA.
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197
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Cheng Y, Gu W, Zhang G, Li X, Guo X. Activation of Notch1 signaling alleviates dysfunction of bone marrow-derived mesenchymal stem cells induced by cigarette smoke extract. Int J Chron Obstruct Pulmon Dis 2017; 12:3133-3147. [PMID: 29138545 PMCID: PMC5667796 DOI: 10.2147/copd.s146201] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are considered attractive therapeutic agents for the treatment of COPD. However, little is known about the impact of Notch on the proliferation, migration, and survival of MSCs in a cigarette smoke (CS) microenvironment. Here, we used CS extract to mimic the CS microenvironment in vitro, with the intention to investigate the effect of Notch in regulating proliferation, migration, and survival of BM-MSCs. Rat bone marrow mesenchymal stem cells were infected with lentivirus vector containing the intracellular domain of Notch1 (N1ICD) and challenged with CS extract. Cell proliferation was detected by Ki67 staining and expression of cell cycle-related proteins. A transwell assay was used to measure cell migration and the expression of apoptotic proteins was examined. The proliferation of BM-MSCs overexpressing N1ICD significantly increased. Consistently, levels of cyclin D1, p-Rb, and E2F-1 increased in N1ICD overexpressing cells. N1ICD overexpression also increased cell migration compared with the control group. N1ICD overexpression equilibrated the expression of Bax and Bcl-2, and blocked caspase-3 cleavage, contributing to the inhibition of apoptosis. Moreover, blockade of the PI3K/Akt pathway suppressed the aforementioned cytoprotective effects of N1ICD. In conclusion, activation of Notch signaling improved proliferation, migration, and survival of BM-MSCs in a CS microenvironment partly through the PI3K/Akt pathway.
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Affiliation(s)
- Yi Cheng
- Department of Respiratory Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wen Gu
- Department of Respiratory Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guorui Zhang
- Department of Respiratory Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoming Li
- Department of Respiratory Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuejun Guo
- Department of Respiratory Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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198
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Xu LL, Fu HX, Zhang JM, Feng FE, Wang QM, Zhu XL, Xue J, Wang CC, Chen Q, Liu X, Wang YZ, Qin YZ, Kong Y, Chang YJ, Xu LP, Liu KY, Huang XJ, Zhang XH. Impaired Function of Bone Marrow Mesenchymal Stem Cells from Immune Thrombocytopenia Patients in Inducing Regulatory Dendritic Cell Differentiation Through the Notch-1/Jagged-1 Signaling Pathway. Stem Cells Dev 2017; 26:1648-1661. [PMID: 28946811 DOI: 10.1089/scd.2017.0078] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Immune thrombocytopenia (ITP) is an autoimmune disease in which dendritic cells (DCs) play a crucial role in the breakdown of self-tolerance. Studies have identified the function of mesenchymal stem cells (MSCs) in promoting the development of regulatory DCs (regDCs). Our previous work revealed that MSCs in ITP exerted senescence, apoptosis, and impaired immunosuppressive effects on T and B cells. However, it is unclear whether the effects of MSCs on regDC induction are altered in ITP. Our data demonstrated that MSCs in ITP were impaired in inhibiting CD1a+ DC and CD14+ DC differentiation from CD34+ hematopoietic progenitor cells (CD34+ HPCs). DCs differentiated with MSCs in ITP exhibited an increased expression of costimulatory molecules CD80/CD86 and secretion of proinflammatory interleukin-12 (IL-12). Accordingly, the tolerogenic characteristics were deficient in DCs induced by MSCs in ITP. DCs differentiated with MSCs in ITP exhibited an impaired ability to inhibit CD3+ T cell proliferation, to suppress T helper (Th)1 cell differentiation, and to induce anergic and regulatory T cells (Tregs). The expression of Notch signaling components was measured in MSCs in ITP. Reduced expression of the ligand Jagged-1, the receptor Notch-1 intracellular domain (NICD-1), and the target gene Hes-1 was identified in MSCs in ITP. The addition of biologically active Jagged-1 to CD34+ HPCs was observed to promote regDC differentiation. When cultured on Jagged-1-coated plates, MSCs in ITP showed an enhancement of the Notch-1 pathway activation, Jagged-1 expression, and the function in inducing regDCs. Pretreatment with all-trans retinoic acid (ATRA) was found to partially restore the capacity of MSCs in both ITP patients and healthy controls in inducing CD34+-derived regDCs. Our data elucidated that MSCs in ITP were impaired in inducing CD34+-regDCs, associated with the Notch-1/Jagged-1 signaling pathway. ATRA could partially correct the impairment of MSCs, suggesting that ATRA could serve as a potential therapeutic alternative for ITP.
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Affiliation(s)
- Lin-Lin Xu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Hai-Xia Fu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Jia-Min Zhang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Fei-Er Feng
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Qian-Ming Wang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Xiao-Lu Zhu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Jing Xue
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Chen-Cong Wang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Qi Chen
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Xiao Liu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Ya-Zhe Wang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Ya-Zhen Qin
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Yuan Kong
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Ying-Jun Chang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Lan-Ping Xu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Kai-Yan Liu
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Xiao-Jun Huang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
| | - Xiao-Hui Zhang
- 1 Peking University People's Hospital, Peking University Institute of Hematology , Beijing, China .,2 Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation , Beijing, China .,3 Collaborative Innovation Center of Hematology, Peking University , Beijing, China
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199
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Gálvez H, Tena JJ, Giraldez F, Abelló G. The Repression of Atoh1 by Neurogenin1 during Inner Ear Development. Front Mol Neurosci 2017; 10:321. [PMID: 29104531 PMCID: PMC5655970 DOI: 10.3389/fnmol.2017.00321] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 09/21/2017] [Indexed: 01/01/2023] Open
Abstract
Atonal homolog 1 (Atoh1) and Neurogenin1 (Neurog1) are basic Helix-Loop-Helix (bHLH) transcription factors crucial for the generation of hair cells (HCs) and neurons in the inner ear. Both genes are induced early in development, but the expression of Atoh1 is counteracted by Neurog1. As a result, HC development is prevented during neurogenesis. This work aimed at understanding the molecular basis of this interaction. Atoh1 regulation depends on a 3'Atoh1-enhancer that is the site for Atoh1 autoregulation. Reporter assays on chick embryos and P19 cells show that Neurog1 hampers the autoactivation of Atoh1, the effect being cell autonomous and independent on Notch activity. Assay for Transposase-Accessible Chromatin with high throughput sequencing (ATAC-Seq) analysis shows that the region B of the 3'Atoh1-enhancer is accessible during development and sufficient for both activation and repression. Neurog1 requires the regions flanking the class A E-box to show its repressor effect, however, it does not require binding to DNA for Atoh1 repression. This depends on the dimerization domains Helix-1 and Helix-2 and the reduction of Atoh1 protein levels. The results point towards the acceleration of Atoh1 mRNA degradation as the potential mechanism for the reduction of Atoh1 levels. Such a mechanism dissociates the prevention of Atoh1 expression in neurosensory progenitors from the unfolding of the neurogenic program.
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Affiliation(s)
- Héctor Gálvez
- DCEXS, Universitat Pompeu Fabra (UPF) - Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, Spain
| | - Juan J Tena
- Centro Andaluz de Biología del Desarrollo, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla, Spain
| | - Fernando Giraldez
- DCEXS, Universitat Pompeu Fabra (UPF) - Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, Spain
| | - Gina Abelló
- DCEXS, Universitat Pompeu Fabra (UPF) - Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, Spain
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200
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Chen T, Liu N, Xu GM, Liu TJ, Liu Y, Zhou Y, Huo SB, Zhang K. Apelin13/APJ promotes proliferation of colon carcinoma by activating Notch3 signaling pathway. Oncotarget 2017; 8:101697-101706. [PMID: 29254197 PMCID: PMC5731907 DOI: 10.18632/oncotarget.21904] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 08/23/2017] [Indexed: 01/02/2023] Open
Abstract
Background The link between Apelin (APL)/APL receptor (APJ) and Jagged (JAG)/Notch signaling pathways in colorectal cancer (CRC) has been poorly investigated. APL/APJ system, a potent angiogenic factor, is up-regulated in a variety of cancers. It contributes to tumor angiogenesis, and correlates with progression of malignancy. JAG/Notch signaling also contributes to progression, proliferation and metastasis of multiple cancers, including CRC. Here we tested the hypothesis that APL/APJ system promotes CRC proliferation by up-regulating Notch3, thus allowing further binding of JAG1 to Notch3. Materials and Methods We used a variety of methods including Western blot, RT-qPCR, gene silencing, ELISA, immunofluorescence staining, to investigate the interaction between APL/APJ system and Notch3 signaling pathway in both surgically-resected specimens and CRC cell line LS180. Results We show that the expression of APL13, APJ, and Notch3 is elevated in CRC. We further demonstrate that APL13 can be secreted into culture media of LS180 cells, suggesting the existence of autocrine loop in CRC. Moreover, we found that APL13 stimulated expression of Notch3. Finally, we found that inhibition of either APJ or Notch3 prevents proliferation of LS180 cells. Conclusions Our results suggest that APL13/APJ and JAG1/Notch3 signaling pathways are linked in CRC. These findings provide a new direction to the efforts targeting effective therapeutic and management approaches in the treatment of CRC.
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Affiliation(s)
- Tong Chen
- Gastrointestinal Surgery Department, The China-Japan Union Hospital of Jilin University, Jilin, China
| | - Ning Liu
- General Surgery Department, The First Hospital of Jilin Province Academy of Traditional Chinese Medicine, Jilin, China
| | - Guang-Meng Xu
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
| | - Tong-Jun Liu
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
| | - Ying Liu
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
| | - Yan Zhou
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
| | - Si-Bo Huo
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
| | - Kai Zhang
- Colorectal Surgery Department, The Second Hospital of Jilin University, Jilin, China
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