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Le Tran N, Wang Y, Bilandzic M, Stephens A, Nie G. Podocalyxin promotes the formation of compact and chemoresistant cancer spheroids in high grade serous carcinoma. Sci Rep 2024; 14:7539. [PMID: 38553472 PMCID: PMC10980795 DOI: 10.1038/s41598-024-57053-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/13/2024] [Indexed: 04/01/2024] Open
Abstract
High grade serous carcinoma (HGSC) metastasises primarily intraperitoneally via cancer spheroids. Podocalyxin (PODXL), an anti-adhesive transmembrane protein, has been reported to promote cancer survival against chemotherapy, however its role in HGSC chemoresistance is unclear. This study investigated whether PODXL plays a role in promoting chemoresistance of HGSC spheroids. We first showed that PODXL was expressed variably in HGSC patient tissues (n = 17) as well as in ovarian cancer cell lines (n = 28) that are more likely categorised as HGSC. We next demonstrated that PODXL-knockout (KO) cells proliferated more slowly, formed less compact spheroids and were more fragile than control cells. Furthermore, when treated with carboplatin and examined for post-treatment recovery, PODXL-KO spheroids showed significantly poorer cell viability, lower number of live cells, and less Ki-67 staining than controls. A similar trend was also observed in ascites-derived primary HGSC cells (n = 6)-spheroids expressing lower PODXL formed looser spheroids, were more vulnerable to fragmentation and more sensitive to carboplatin than spheroids with higher PODXL. Our studies thus suggests that PODXL plays an important role in promoting the formation of compact/hardy HGSC spheroids which are more resilient to chemotherapy drugs; these characteristics may contribute to the chemoresistant nature of HGSC.
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Affiliation(s)
- Ngoc Le Tran
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora West Campus, Bundoora, VIC, 3083, Australia
| | - Yao Wang
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora West Campus, Bundoora, VIC, 3083, Australia
| | - Maree Bilandzic
- Hudson Institute of Medical Research, Clayton, VIC, 3168, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, 3168, Australia
| | - Andrew Stephens
- Hudson Institute of Medical Research, Clayton, VIC, 3168, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, 3168, Australia
| | - Guiying Nie
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora West Campus, Bundoora, VIC, 3083, Australia.
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2
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Jia J, Bian Z, Song Y. The Role of DSPP in Dentine Formation and Hereditary Dentine Defects. Chin J Dent Res 2024; 27:17-28. [PMID: 38546516 DOI: 10.3290/j.cjdr.b5136791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The dentine sialophosphoprotein (DSPP) gene is the only identified causative gene for dentinogenesis imperfecta type 2 (DGI-II), dentinogenesis imperfecta type 3 (DGI-III) and dentine dysplasia type 2 (DD-II). These three disorders may have similar molecular mechanisms involved in bridging the DSPP mutations and the resulting abnormal dentine mineralisation. The DSPP encoding proteins DSP (dentine sialoprotein) and DPP (dentine phosphoprotein) are positive regulators of dentine formation and perform a function during dentinogenesis. The present review focused on the recent findings and viewpoints regarding the relationship between DSPP and dentinogenesis as well as mineralisation from multiple perspectives, involving studies relating to spatial structure and tissue localisation of DSPP, DSP and DPP, the biochemical characteristics and biological function of these molecules, and the causative role of the proteins in phenotypes of the knockout mouse model and in hereditary dentine defects.
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3
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Yuan M, Zheng X, Xue Y, He Z, Song G, Song Y. A novel DSPP frameshift mutation causing dentin dysplasia type 2 and disease management strategies. Oral Dis 2023; 29:2394-2400. [PMID: 36597617 DOI: 10.1111/odi.14494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 12/30/2022] [Indexed: 01/05/2023]
Abstract
The present study aims to investigate the mutation in a Chinese family with dentin dysplasia type II (DD-II) and to summarize mutation hotspots, clinical manifestations, and disease management strategies. Phenotype analysis, clinical intervention, mutation screening, and cosegregation analysis within the enrolled family were performed. A summary of the reported mutations in the dentin phosphoprotein (DPP) region of dentin sialophosphoprotein (DSPP) was analyzed. Pathogenicity prediction analysis of the physical properties and function of DSPP variants was performed by bioinformatic processing. Clinical management strategies are discussed. A novel pathogenic mutation (c.2035delA) in the DPP region of DSPP was identified, which was cosegregated in the family. The immature permanent teeth of patients with DD-II presented with X-shaped root canal phenotypes. Most of the identified mutations for DD-II were clustered in the DPP region between nucleotides 1686-2134. Points of differential diagnosis, clinical interventions, and management strategies are proposed. This study revealed a novel DSPP frameshift mutation and presented new clinical features of DD-II. The locus involving nucleotides 1686-2134 of DSPP may represent a mutational hotspot for the disease. Appropriate management of DD-II at different stages is important to avoid the development of secondary dental lesions.
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Affiliation(s)
- Minyan Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xueqing Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yifan Xue
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhenru He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Guangtai Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yaling Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
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4
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Song YL, Bian Z. [Recognition on dentin dysplasia type Ⅱ]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:766-771. [PMID: 37550036 DOI: 10.3760/cma.j.cn112144-20230410-00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Dentin dysplasia type Ⅱ (DD-Ⅱ) is a subtype of hereditary dentin disorders. The dentin sialophosphoprotein (DSPP) gene has been revealed to be the causative gene, whose mutations could affect the normal tooth development process. The lesions involve both deciduous and permanent dentition, mainly manifested as tooth discoloration, attrition and even the subsequent malocclusion. If not treated in time, it will significantly affect the physical and psychological health of patients. The disease is difficult to be diagnosed in clinic accurately as its low incidence and hidden manifestations. The present article aims to discuss the clinical and radiographic characteristics, diagnosis, treatment of DD-Ⅱ, in order to improve the overall understanding on DD-Ⅱ for clinicians.
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Affiliation(s)
- Y L Song
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z Bian
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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5
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Liang T, Smith CE, Hu Y, Zhang H, Zhang C, Xu Q, Lu Y, Qi L, Hu JCC, Simmer JP. Dentin defects caused by a Dspp -1 frameshift mutation are associated with the activation of autophagy. Sci Rep 2023; 13:6393. [PMID: 37076504 PMCID: PMC10115861 DOI: 10.1038/s41598-023-33362-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/12/2023] [Indexed: 04/21/2023] Open
Abstract
Dentin sialophosphoprotein (DSPP) is primarily expressed by differentiated odontoblasts (dentin-forming cells), and transiently expressed by presecretory ameloblasts (enamel-forming cells). Disease-causing DSPP mutations predominantly fall into two categories: 5' mutations affecting targeting and trafficking, and 3' - 1 frameshift mutations converting the repetitive, hydrophilic, acidic C-terminal domain into a hydrophobic one. We characterized the dental phenotypes and investigated the pathological mechanisms of DsppP19L and Dspp-1fs mice that replicate the two categories of human DSPP mutations. In DsppP19L mice, dentin is less mineralized but contains dentinal tubules. Enamel mineral density is reduced. Intracellular accumulation and ER retention of DSPP is observed in odontoblasts and ameloblasts. In Dspp-1fs mice, a thin layer of reparative dentin lacking dentinal tubules is deposited. Odontoblasts show severe pathosis, including intracellular accumulation and ER retention of DSPP, strong ubiquitin and autophagy activity, ER-phagy, and sporadic apoptosis. Ultrastructurally, odontoblasts show extensive autophagic vacuoles, some of which contain fragmented ER. Enamel formation is comparable to wild type. These findings distinguish molecular mechanisms underlying the dental phenotypes of DsppP19L and Dspp-1fs mice and support the recently revised Shields classification of dentinogenesis imperfecta caused by DSPP mutations in humans. The Dspp-1fs mice may be valuable for the study of autophagy and ER-phagy.
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Affiliation(s)
- Tian Liang
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA.
| | - Charles E Smith
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
- Department of Anatomy & Cell Biology, Faculty of Medicine & Health Sciences, McGill University, Montreal, QC, Canada
| | - Yuanyuan Hu
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
| | - Hong Zhang
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
| | - Chuhua Zhang
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
| | - Qian Xu
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave., Dallas, TX, 75246, USA
| | - Yongbo Lu
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave., Dallas, TX, 75246, USA
| | - Ling Qi
- Department of Molecular & Integrative Physiology, Department of Internal Medicine, Division of Metabolism, Endocrinology and Diabetes, University of Michigan Medical School, 1000 Wall St., Ann Arbor, MI, 48105, USA
| | - Jan C-C Hu
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
| | - James P Simmer
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 North University, Ann Arbor, MI, 48109-1078, USA
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Withdrawal: A novel DSPP frameshift mutation causing dentin dysplasia type 2 and disease management strategies. Oral Dis 2023; 29:855. [PMID: 36346235 DOI: 10.1111/odi.14431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
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7
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Wang F, Wang N, Zhao T, Zhang M, Wu W, Sun W, Wu J. [Clinical and genetic analysis of a pedigree affected with hereditary dentinogenesis imperfecta type II]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2022; 39:1016-1020. [PMID: 36082577 DOI: 10.3760/cma.j.cn511374-20211014-00811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To explore the clinical and genetic characteristics of a Chinese pedigree affected with hereditary dentinogenesis imperfecta (DGI) type II. METHODS Clinical data of the pedigree members were collected. Genomic DNA was extracted from peripheral blood samples and subjected to whole exome sequencing. RESULTS Clinical characteristics of the affected family members have included amber teeth along with significant attrition, constricted roots and dentine hypertrophy leading to pulpal obliteration, which were suggestive of DGI type II. All of the affected members were found to have harbored a novel heterozygous c.2837delA (p.Asp946Valfs*368) variant of the DSPP gene which was predicted to be likely pathogenic. CONCLUSION The c.2837delA variant of the DSPP gene probably underlay the disease in this pedigree. Above finding has expanded the variant spectrum of DSPP gene and provided a basis for molecular diagnosis and genetic counseling for this pedigree.
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Affiliation(s)
- Feiyang Wang
- Department of Periodontology, Nanjing Stomatological Hospital, the Affiliated Stomatological Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China.
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Amo L, Díez-García J, Tamayo-Orbegozo E, Maruri N, Larrucea S. Podocalyxin Expressed in Antigen Presenting Cells Promotes Interaction With T Cells and Alters Centrosome Translocation to the Contact Site. Front Immunol 2022; 13:835527. [PMID: 35711462 PMCID: PMC9197222 DOI: 10.3389/fimmu.2022.835527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 05/02/2022] [Indexed: 11/25/2022] Open
Abstract
Podocalyxin (PODXL), a cell surface sialomucin expressed in diverse types of normal and malignant cells, mediates cellular adhesion to extracellular matrix and cell-to-cell interaction. A previous study reported the expression of PODXL protein on monocytes undergoing macrophage differentiation, yet the expression of this molecule in other antigen presenting cells (APCs) and its function in the immune system still remain undetermined. In this study, we report that PODXL is expressed in human monocyte-derived immature dendritic cells at both the mRNA and protein levels. Following dendritric cells maturation using pro-inflammatory stimuli, PODXL expression level decreased substantially. Furthermore, we found that PODXL expression is positively regulated by IL-4 through MEK/ERK and JAK3/STAT6 signaling pathways. Our results revealed a polarized distribution of PODXL during the interaction of APCs with CD4+ T cells, partially colocalizing with F-actin. Notably, PODXL overexpression in APCs promoted their interaction with CD4+ T cells and CD8+ T cells and decreased the expression of MHC-I, MHC-II, and the costimulatory molecule CD86. In addition, PODXL reduced the translocation of CD4+ T-cell centrosome toward the APC-contact site. These findings suggest a regulatory role for PODXL expressed by APCs in immune responses, thus representing a potential target for therapeutic blockade in infection and cancer.
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Affiliation(s)
- Laura Amo
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Javier Díez-García
- Microscopy Facility, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Estíbaliz Tamayo-Orbegozo
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Natalia Maruri
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Susana Larrucea
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- *Correspondence: Susana Larrucea,
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Noor H, Zaman A, Teo C, Sughrue ME. PODNL1 Methylation Serves as a Prognostic Biomarker and Associates with Immune Cell Infiltration and Immune Checkpoint Blockade Response in Lower-Grade Glioma. Int J Mol Sci 2021; 22:ijms222212572. [PMID: 34830454 PMCID: PMC8625785 DOI: 10.3390/ijms222212572] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 12/27/2022] Open
Abstract
Lower-grade glioma (LGG) is a diffuse infiltrative tumor of the central nervous system, which lacks targeted therapy. We investigated the role of Podocan-like 1 (PODNL1) methylation in LGG clinical outcomes using the TCGA-LGG transcriptomics dataset. We identified four PODNL1 CpG sites, cg07425555, cg26969888, cg18547299, and cg24354933, which were associated with unfavorable overall survival (OS) and disease-free survival (DFS) in univariate and multivariate analysis after adjusting for age, gender, tumor-grade, and IDH1-mutation. In multivariate analysis, the OS and DFS hazard ratios ranged from 0.44 to 0.58 (p < 0.001) and 0.62 to 0.72 (p < 0.001), respectively, for the four PODNL1 CpGs. Enrichment analysis of differential gene and protein expression and analysis of 24 infiltrating immune cell types showed significantly increased infiltration in LGGs and its histological subtypes with low-methylation levels of the PODNL1 CpGs. High PODNL1 expression and low-methylation subgroups of the PODNL1 CpG sites were associated with significantly increased PD-L1, PD-1, and CTLA4 expressions. PODNL1 methylation may thus be a potential indicator of immune checkpoint blockade response, and serve as a biomarker for determining prognosis and immune subtypes in LGG.
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Affiliation(s)
- Humaira Noor
- Cure Brain Cancer Biomarkers and Translational Research Group, Prince of Wales Clinical School, University of New South Wales, Sydney, NSW 2031, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, UNSW Sydney, Randwick, NSW 2031, Australia
- Faculty of Medicine, University of New South Wales, Randwick, NSW 2031, Australia;
- Correspondence:
| | - Ashraf Zaman
- Faculty of Medicine, University of New South Wales, Randwick, NSW 2031, Australia;
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW 2010, Australia
- Centre for Minimally Invasive Neurosurgery, Prince of Wales Private Hospital, Randwick, NSW 2031, Australia; (C.T.); (M.E.S.)
| | - Charles Teo
- Centre for Minimally Invasive Neurosurgery, Prince of Wales Private Hospital, Randwick, NSW 2031, Australia; (C.T.); (M.E.S.)
| | - Michael E. Sughrue
- Centre for Minimally Invasive Neurosurgery, Prince of Wales Private Hospital, Randwick, NSW 2031, Australia; (C.T.); (M.E.S.)
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10
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Abstract
Abstract: Background Growing evidences have showed that mucins (MUCs) are linked to occurrence and progression of human cancers. However, a comprehensive study regarding the expression, diagnosis, prognosis and mechanism of MUCs in breast cancer remains absent. Methods: A series of in silico analyses were employed in this study. Results: After performing comprehensive analysis for MUCs, MUC14 was identified as the most potential regulator in breast cancer, with downregulated expression in both mRNA and protein levels and significant diagnostic and prognostic values in breast cancer. Mechanistic exploration revealed that a potential ncRNA-mRNA axis, involving LINC01128/LINC01140/SGMS1-AS1/LINC00667-miR-137/miR-429-BCL2, might be partially responsible for MUC14′s functions in breast cancer. Conclusions: Collectively, our study elucidated a key role of MUC14 in breast cancer and also provided some clues for explanation of the molecular action mechanism of MUC14 in breast cancer.
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Affiliation(s)
- Shuqian Wang
- Department of Breast Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China;
| | - Jing Jin
- Department of Neurosurgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China;
| | - Jing Chen
- Department of Oncology, The First Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
- Correspondence: (J.C.); (W.L.)
| | - Weiyang Lou
- Department of Breast Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China;
- Correspondence: (J.C.); (W.L.)
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Soejima Y, Takeuchi M, Miyamoto N, Sawabe M, Fukusato T. ITGB6-Knockout Suppresses Cholangiocarcinoma Cell Migration and Invasion with Declining PODXL2 Expression. Int J Mol Sci 2021; 22:ijms22126303. [PMID: 34208313 PMCID: PMC8231266 DOI: 10.3390/ijms22126303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/27/2021] [Accepted: 06/08/2021] [Indexed: 12/21/2022] Open
Abstract
Intrahepatic cholangiocarcinoma (iCCA) is a heterogeneous bile duct cancer with a poor prognosis. Integrin αvβ6 (β6) has been shown to be upregulated in iCCA and is associated with its subclassification and clinicopathological features. In the present study, two ITGB6-knockout HuCCT1 CCA cell lines (ITGB6-ko cells) were established using the clustered regulatory interspaced short palindromic repeats (CRISPR), an associated nuclease 9 (Cas9) system, and single-cell cloning. RNA sequencing analysis, real-time polymerase chain reaction (PCR), and immunofluorescent methods were applied to explore possible downstream factors. ITGB6-ko cells showed significantly decreased expression of integrin β6 on flow cytometric analysis. Both cell lines exhibited significant inhibition of cell migration and invasion, decreased wound-healing capability, decreased colony formation ability, and cell cycle dysregulation. RNA sequencing and real-time PCR analysis revealed a remarkable decrease in podocalyxin-like protein 2 (PODXL2) expression in ITGB6-ko cells. Colocalization of PODXL2 and integrin β6 was also observed. S100 calcium-binding protein P and mucin 1, which are associated with CCA subclassification, were downregulated in ITGB6-ko cells. These results describe the successful generation of ITGB6-ko CCA cell clones with decreased migration and invasion and downregulation of PODXL2, suggesting the utility of integrin β6 as a possible therapeutic target or diagnostic marker candidate.
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Affiliation(s)
- Yurie Soejima
- Department of Molecular Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.T.); (N.M.); (M.S.)
- Correspondence: ; Tel.: +81-3-5803-5375
| | - Miho Takeuchi
- Department of Molecular Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.T.); (N.M.); (M.S.)
| | - Nao Miyamoto
- Department of Molecular Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.T.); (N.M.); (M.S.)
| | - Motoji Sawabe
- Department of Molecular Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.T.); (N.M.); (M.S.)
| | - Toshio Fukusato
- General Medical Education and Research Center, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 178-8605, Japan;
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12
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Abstract
Dentin Sialoprotein (DSP) and phosphophoryn (PP) are two most dominant non-collagenous proteins in dentin, which are the cleavage products of the DSPP (dentin sialophosphoprotein) precursor protein. The absence of the DSPP gene in DSPP knock-out (KO) mice results in characteristics that are consistent with dentinogenesis imperfecta type III in humans. Symptoms include thin dentin, bigger pulp chamber with frequent pulp exposure as well as abnormal epithelial-mesenchymal interactions, and the appearance of chondrocyte-like cells in dental pulp. To better understand how DSPP influences tooth development and dentin formation, we used a bacterial artificial chromosome transgene construct (BAC-DSPP) that contained the complete DSPP gene and promoter to generate BAC-DSPP transgenic mice directly in a mouse DSPP KO background. Two BAC-DSPP transgenic mouse strains were generated and characterized. DSPP mRNA expression in BAC-DSPP Strain A incisors was similar to that from wild-type (wt) mice. DSPP mRNA expression in BAC-DSPP Strain B animals was only 10% that of wt mice. PP protein content in Strain A incisors was 25% of that found in wt mice, which was sufficient to completely rescue the DSPP KO defect in mineral density, since microCT dentin mineral density analysis in 21-day postnatal animal molars showed essentially identical mineral density in both strain A and wt mice. Strain B mouse incisors, with 5% PP expression, only partially rescued the DSPP KO defect in mineral density, as microCT scans of 21-day postnatal animal molars indicated a reduced dentin mineral density compared to wt mice, though the mineral density was still increased over that of DSPP KO. Furthermore, our findings showed that DSPP dosage in Strain A was sufficient to rescue the DSPP KO defect in terms of epithelial-mesenchymal interactions, odontoblast lineage maintenance, along with normal dentin thickness and normal mineral density while DSPP gene dosage in Strain B only partially rescued the aforementioned DSPP KO defect.
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Affiliation(s)
- Dandrich Lim
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, United States of America
| | - Ko-Chien Wu
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, United States of America
| | - Arthur Lee
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, United States of America
| | - Thomas L. Saunders
- Division of Medical Medicine and Genetics, Department of Internal Medicine, Transgenic Animal Model Core, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Helena H. Ritchie
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, United States of America
- * E-mail:
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Ludwig-Słomczyńska AH, Seweryn MT, Kapusta P, Pitera E, Mantaj U, Cyganek K, Gutaj P, Dobrucka Ł, Wender-Ożegowska E, Małecki MT, Wołkow PP. The transcriptome-wide association search for genes and genetic variants which associate with BMI and gestational weight gain in women with type 1 diabetes. Mol Med 2021; 27:6. [PMID: 33472578 PMCID: PMC7818927 DOI: 10.1186/s10020-020-00266-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/30/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Clinical data suggest that BMI and gestational weight gain (GWG) are strongly interconnected phenotypes; however, the genetic basis of the latter is rather unclear. Here we aim to find genes and genetic variants which influence BMI and/or GWG. METHODS We have genotyped 316 type 1 diabetics using Illumina Infinium Omni Express Exome-8 v1.4 arrays. The GIANT, ARIC and T2D-GENES summary statistics were used for TWAS (performed with PrediXcan) in adipose tissue. Next, the analysis of association of imputed expression with BMI in the general and diabetic cohorts (Analysis 1 and 2) or GWG (Analysis 3 and 4) was performed, followed by variant association analysis (1 Mb around identified loci) with the mentioned phenotypes. RESULTS In Analysis 1 we have found 175 BMI associated genes and 19 variants (p < 10-4) which influenced GWG, with the strongest association for rs11465293 in CCL24 (p = 3.18E-06). Analysis 2, with diabetes included in the model, led to discovery of 1812 BMI associated loci and 207 variants (p < 10-4) influencing GWG, with the strongest association for rs9690213 in PODXL (p = 9.86E-07). In Analysis 3, among 648 GWG associated loci, 2091 variants were associated with BMI (FDR < 0.05). In Analysis 4, 7 variants in GWG associated loci influenced BMI in the ARIC cohort. CONCLUSIONS Here, we have shown that loci influencing BMI might have an impact on GWG and GWG associated loci might influence BMI, both in the general and T1DM cohorts. The results suggest that both phenotypes are related to insulin signaling, glucose homeostasis, mitochondrial metabolism, ubiquitinoylation and inflammatory responses.
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Affiliation(s)
| | - Michał T Seweryn
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Przemysław Kapusta
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
| | - Ewelina Pitera
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
| | - Urszula Mantaj
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Cyganek
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
- Department of Metabolic Diseases, Jagiellonian University Medical College, Kraków, Poland
| | - Paweł Gutaj
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Łucja Dobrucka
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
| | - Ewa Wender-Ożegowska
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Maciej T Małecki
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
- Department of Metabolic Diseases, Jagiellonian University Medical College, Kraków, Poland
| | - Paweł P Wołkow
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland.
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14
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Pagano L, Toto A, Malagrinò F, Visconti L, Jemth P, Gianni S. Double Mutant Cycles as a Tool to Address Folding, Binding, and Allostery. Int J Mol Sci 2021; 22:E828. [PMID: 33467625 PMCID: PMC7830974 DOI: 10.3390/ijms22020828] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 11/16/2022] Open
Abstract
Quantitative measurement of intramolecular and intermolecular interactions in protein structure is an elusive task, not easy to address experimentally. The phenomenon denoted 'energetic coupling' describes short- and long-range interactions between two residues in a protein system. A powerful method to identify and quantitatively characterize long-range interactions and allosteric networks in proteins or protein-ligand complexes is called double-mutant cycles analysis. In this review we describe the thermodynamic principles and basic equations that underlie the double mutant cycle methodology, its fields of application and latest employments, and caveats and pitfalls that the experimentalists must consider. In particular, we show how double mutant cycles can be a powerful tool to investigate allosteric mechanisms in protein binding reactions as well as elusive states in protein folding pathways.
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Affiliation(s)
- Livia Pagano
- Istituto Pasteur—Fondazione Cenci Bolognetti, Dipartimento di Scienze Biochimiche ‘A. Rossi Fanelli’ and Istituto di Biologia e Patologia Molecolari del CNR, Sapienza Università di Roma, 00185 Rome, Italy; (L.P.); (A.T.); (F.M.); (L.V.)
| | - Angelo Toto
- Istituto Pasteur—Fondazione Cenci Bolognetti, Dipartimento di Scienze Biochimiche ‘A. Rossi Fanelli’ and Istituto di Biologia e Patologia Molecolari del CNR, Sapienza Università di Roma, 00185 Rome, Italy; (L.P.); (A.T.); (F.M.); (L.V.)
| | - Francesca Malagrinò
- Istituto Pasteur—Fondazione Cenci Bolognetti, Dipartimento di Scienze Biochimiche ‘A. Rossi Fanelli’ and Istituto di Biologia e Patologia Molecolari del CNR, Sapienza Università di Roma, 00185 Rome, Italy; (L.P.); (A.T.); (F.M.); (L.V.)
| | - Lorenzo Visconti
- Istituto Pasteur—Fondazione Cenci Bolognetti, Dipartimento di Scienze Biochimiche ‘A. Rossi Fanelli’ and Istituto di Biologia e Patologia Molecolari del CNR, Sapienza Università di Roma, 00185 Rome, Italy; (L.P.); (A.T.); (F.M.); (L.V.)
| | - Per Jemth
- Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, Sweden
| | - Stefano Gianni
- Istituto Pasteur—Fondazione Cenci Bolognetti, Dipartimento di Scienze Biochimiche ‘A. Rossi Fanelli’ and Istituto di Biologia e Patologia Molecolari del CNR, Sapienza Università di Roma, 00185 Rome, Italy; (L.P.); (A.T.); (F.M.); (L.V.)
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15
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Bantounas I, Lopes FM, Rooney KM, Woolf AS, Kimber SJ. The miR-199a/214 Cluster Controls Nephrogenesis and Vascularization in a Human Embryonic Stem Cell Model. Stem Cell Reports 2021; 16:134-148. [PMID: 33306987 PMCID: PMC7897558 DOI: 10.1016/j.stemcr.2020.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) are gene expression regulators and they have been implicated in acquired kidney diseases and in renal development, mostly through animal studies. We hypothesized that the miR-199a/214 cluster regulates human kidney development. We detected its expression in human embryonic kidneys by in situ hybridization. To mechanistically study the cluster, we used 2D and 3D human embryonic stem cell (hESC) models of kidney development. After confirming expression in each model, we inhibited the miRNAs using lentivirally transduced miRNA sponges. This reduced the WT1+ metanephric mesenchyme domain in 2D cultures. Sponges did not prevent the formation of 3D kidney-like organoids. These organoids, however, contained dysmorphic glomeruli, downregulated WT1, aberrant proximal tubules, and increased interstitial capillaries. Thus, the miR-199a/214 cluster fine-tunes differentiation of both metanephric mesenchymal-derived nephrons and kidney endothelia. While clinical implications require further study, it is noted that patients with heterozygous deletions encompassing this miRNA locus can have malformed kidneys.
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Affiliation(s)
- Ioannis Bantounas
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, and the Manchester Academic Health Science Centre, Manchester, UK.
| | - Filipa M Lopes
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, and the Manchester Academic Health Science Centre, Manchester, UK
| | - Kirsty M Rooney
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, and the Manchester Academic Health Science Centre, Manchester, UK
| | - Adrian S Woolf
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, and the Manchester Academic Health Science Centre, Manchester, UK; Royal Manchester Children's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Susan J Kimber
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, and the Manchester Academic Health Science Centre, Manchester, UK.
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16
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Couto RSD, Rodrigues MFSD, Ferreira LS, Diniz IMA, Silva FDS, Lopez TCC, Lima RR, Marques MM. Evaluation of Resin-Based Material Containing Copaiba Oleoresin ( Copaifera Reticulata Ducke): Biological Effects on the Human Dental Pulp Stem Cells. Biomolecules 2020; 10:biom10070972. [PMID: 32605172 PMCID: PMC7407412 DOI: 10.3390/biom10070972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/20/2020] [Accepted: 06/23/2020] [Indexed: 01/08/2023] Open
Abstract
The purpose of this study was to analyze in vitro the biological effects on human dental pulp stem cells triggered in response to substances leached or dissolved from two experimental cements for dental pulp capping. The experimental materials, based on extracts from Copaifera reticulata Ducke (COP), were compared to calcium hydroxide [Ca(OH)2] and mineral trioxide aggregate (MTA), materials commonly used for direct dental pulp capping in restorative dentistry. For this, human dental pulp stem cells were exposed to COP associated or not with Ca(OH)2 or MTA. Cell cytocompatibility, migration, and differentiation (mineralized nodule formation (Alizarin red assay) and gene expression (RT-qPCR) of OCN, DSPP, and HSP-27 (genes regulated in biomineralization events)) were evaluated. The results showed that the association of COP reduced the cytotoxicity of Ca(OH)2. Upregulations of the OCN, DSPP, and HSP-27 genes were observed in response to the association of COP to MTA, and the DSPP and HSP-27 genes were upregulated in the Ca(OH)2 + COP group. In up to 24 h, cell migration was significantly enhanced in the MTA + COP and Ca(OH)2 + COP groups. In conclusion, the combination of COP with the currently used materials for dental pulp capping [Ca(OH)2 and MTA] improved the cell activities related to pulp repair (i.e., cytocompatibility, differentiation, mineralization, and migration) including a protective effect against the cytotoxicity of Ca(OH)2.
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Affiliation(s)
- Roberta Souza D’Almeida Couto
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
- School of Dentistry, Federal University of Pará, Belém, PA 66075-110, Brazil
- Correspondence: ; Tel.: +55-091-3201-7637
| | | | - Leila Soares Ferreira
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
| | - Ivana Márcia Alves Diniz
- Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizionte, MG 31270-901, Brazil;
| | - Fernando de Sá Silva
- Departamento de Ciências da Vida, Federal University of Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil;
| | - Talita Christine Camilo Lopez
- Postgraduation Program in Biophotonics Applied to Health Sciences, Nove de Julho University, São Paulo, SP 02112-000, Brazil; (M.F.S.D.R.); (T.C.C.L.)
| | - Rafael Rodrigues Lima
- Institute of Biological Sciences, Federal University of Pará, Belém, PA 66075-110, Brazil;
| | - Márcia Martins Marques
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
- Post graduation course in Dentistry, Ibirapuera University, São Paulo, SP 04661-100, Brazil
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Abstract
Bone sialoprotein (BSP) is a member of the SIBLING family with essential roles in skeletogenesis. In the developing teeth, although the expression and function of BSP in the formation of acellular cementum and periodontal attachment are well documented, there are uncertainties regarding the expression and function of BSP by odontoblasts and dentin. Reporter mice are valuable animal models for biological research, providing a gene expression readout that can contribute to cellular characterization within the context of a developmental process. In the present study, we examined the expression of a BSP-GFPtpz reporter mouse line during odontoblast differentiation, reparative dentinogenesis, and bone. In the developing teeth, BSP-GFPtpz was expressed at high levels in cementoblasts but not in odontoblasts or dentin. In bones, the transgene was highly expressed in osteoblasts at an early stage of differentiation. Interestingly, despite its lack of expression in odontoblasts and dental pulp during tooth development, the BSP-GFPtpz transgene was detected during in vitro mineralization of primary pulp cultures and during reparative dentinogenesis following pulp exposures. Importantly, under these experimental contexts, the expression of BSP-GFPtpz was still exclusive to DSPP-Cerulean, an odontoblast-specific reporter gene. This suggests that the combinatorial use of BSP-GFPtpz and DSPP-Cerulean can be a valuable experimental tool to distinguish osteogenic from dentinogenic cells, thereby providing an avenue to investigate mechanisms that distinctly regulate the lineage progression of progenitors into odontoblasts versus osteoblasts.
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Affiliation(s)
- A. Vijaykumar
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
| | - P. Dyrkacz
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
| | - I. Vidovic-Zdrilic
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
| | - P. Maye
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
| | - M. Mina
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
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18
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Hei Z, Zhao M, Tian Y, Chang H, Shen X, Xia G, Wang J. Isolation and Characterization of a Novel Sialoglycopeptide Promoting Osteogenesis from Gadus morhua Eggs. Molecules 2019; 25:molecules25010156. [PMID: 31906039 PMCID: PMC6983019 DOI: 10.3390/molecules25010156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/23/2019] [Accepted: 12/27/2019] [Indexed: 12/12/2022] Open
Abstract
Gadus morhua eggs contain several nutrients, including polyunsaturated fatty acids, lecithin and glycoproteins. A novel sialoglycopeptide from the eggs of G. morhua (Gm-SGPP) was extracted with 90% phenol and purified by Q Sepharose Fast Flow (QFF) ion exchange chromatography, followed by S-300 gel filtration chromatography. Gm-SGPP contained 63.7% carbohydrate, 16.2% protein and 18.6% N-acetylneuraminic acid. High-performance size exclusion chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) demonstrated that Gm-SGPP is a 7000-Da pure sialoglycopeptide. β-elimination reaction suggested that Gm-SGPP contained N-glycan units. Amino acid N-terminal sequence analysis indicated the presence of Ala-Ser-Asn-Gly-Thr-Gln-Ala-Pro amino acid sequence. Moreover, N-glycan was connected at the third Asn location of the peptide chain through GlcNAc. Gm-SGPP was composed of D-mannose, D-glucuronic acid and D-galactose. Fourier transform-infrared spectroscopy (FT-IR), 1H-nuclear magnetic resonance spectroscopy (1H-NMR) and methylation analysis were performed to reveal the structure profile of Gm-SGPP. In vitro results showed that the proliferation activity of MC3T3-E1 cells was significantly promoted by Gm-SGPP. In vivo data revealed that Gm-SGPP increased the calcium and phosphorus content of tibias and promoted longitudinal bone growth in adolescent rats.
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Affiliation(s)
- Zhiliang Hei
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China
- College of Food Science and Technology, Hainan University, Hainan 570228, China
| | - Meihui Zhao
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China
- College of Food Science and Technology, Hainan University, Hainan 570228, China
| | - Yingying Tian
- Marine Biomedical Research Institute of Qingdao, Qingdao 266003, China
| | - Hong Chang
- Hainan Institute for Food Control, Hainan 570228, China
| | - Xuanri Shen
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China
- College of Food Science and Technology, Hainan University, Hainan 570228, China
| | - Guanghua Xia
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China
- College of Food Science and Technology, Hainan University, Hainan 570228, China
- Correspondence: (G.X.); (J.W.); Tel.: +86-0898-6619-6803 (G.X.); +86-0532-8203-1948 (J.W.); Fax: +86-0532-8203-2468 (G.X.); +86-0898-6619-6803 (J.W.)
| | - Jingfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Correspondence: (G.X.); (J.W.); Tel.: +86-0898-6619-6803 (G.X.); +86-0532-8203-1948 (J.W.); Fax: +86-0532-8203-2468 (G.X.); +86-0898-6619-6803 (J.W.)
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Saito K, Iioka H, Maruyama S, Sumardika IW, Sakaguchi M, Kondo E. PODXL1 promotes metastasis of the pancreatic ductal adenocarcinoma by activating the C5aR/C5a axis from the tumor microenvironment. Neoplasia 2019; 21:1121-1132. [PMID: 31759250 PMCID: PMC6872781 DOI: 10.1016/j.neo.2019.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 12/12/2022]
Abstract
Pancreatic invasive ductal adenocarcinoma (PDAC) is a representative intractable malignancy under the current cancer therapies, and is considered a scirrhous carcinoma because it develops dense stroma. Both PODXL1, a member of CD34 family molecules, and C5aR, a critical cell motility inducer, have gained recent attention, as their expression was reported to correlate with poor prognosis for patients with diverse origins including PDAC; however, previous studies reported independently on their respective biological significance. Here we demonstrate that PODXL1 is essential for metastasis of PDAC cells through its specific interaction with C5aR. In vitro assay demonstrated that PODXL1 bound to C5aR, which stabilized C5aR protein and recruited it to cancer cell plasma membranes to receive C5a, an inflammatory chemoattractant factor. PODXL1 knockout in PDAC cells abrogated their metastatic property in vivo, emulating the liver metastatic mouse model treated with anti-C5a neutralizing antibody. In molecular studies, PODXL1 triggered EMT on PDAC cells in response to stimulation by C5a, corroborating PODXL1 involvement in PDAC cellular invasive properties via specific interaction with the C5aR/C5a axis. Confirming the molecular assays, histological examination showed coexpression of PODXL1 and C5aR at the invasive front of primary cancer nests as well as in liver metastatic foci of PDAC both in the mouse metastasis model and patient tissues. Hence, the novel direct interaction between PODXL1 and the C5aR/C5a axis may provide a better integrated understanding of PDAC biological characteristics including its tumor microenvironment factors.
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Key Words
- podxl1, podocalyxin-like 1
- pdac, pancreatic invasive ductal adenocarcinoma
- c5ar, complement component 5a receptor 1 (c5ar1, cd88)
- caf, cancer-associated fibroblast
- emt, epithelial-mesenchymal transition
- ips, induced pluripotent stem
- itgb1, integrin β1
- wt, wild type
- ko, knockout
- ihc, immunohistochemistry
- ib, immunoblot
- ip, immunoprecipitation
- if, immunofluorescence
- hpne, human immortalized pancreatic ductal epithelium
- nhdf, normal human dermal fibroblast
- mmp, matrix metalloproteinases
- ab, antibody
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Affiliation(s)
- Ken Saito
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan
| | - Hidekazu Iioka
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan
| | - Satoshi Maruyama
- Oral Pathology Section, Department of Surgical Pathology, Niigata University Hospital, 2-5274 Gakkoucho-dori, Chuo Ward, Niigata City 951-8514, Japan
| | - I Wayan Sumardika
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558 Japan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558 Japan
| | - Eisaku Kondo
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan.
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Chong CH, Li Q, Mak PHS, Ng CCP, Leung EHW, Tan VH, Chan AKW, McAlonan G, Chan SY. Lrrc7 mutant mice model developmental emotional dysregulation that can be alleviated by mGluR5 allosteric modulation. Transl Psychiatry 2019; 9:244. [PMID: 31582721 PMCID: PMC6776540 DOI: 10.1038/s41398-019-0580-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 09/05/2019] [Accepted: 09/17/2019] [Indexed: 01/30/2023] Open
Abstract
LRRC7 has been identified as a candidate gene for severe childhood emotional dysregulation. Direct experimental evidence for a role of LRRC7 in the disease is needed, as is a better understanding of its impact on neuronal structure and signaling, and hence potential treatment targets. Here, we generated and analyzed an Lrrc7 mutant mouse line. Consistent with a critical role of LRRC7 in emotional regulation, mutant mice had inappropriate juvenile aggressive behavior and significant anxiety-like behavior and social dysfunction in adulthood. The pivotal role of mGluR5 signaling was demonstrated by rescue of behavioral defects with augmentation of mGluR5 receptor activity by 3-Cyano-N-(1,3-diphenyl-1H-pyrazol-5-yl)benzamide (CDPPB). Intra-peritoneal injection of CDPPB alleviated abnormal juvenile behavior, as well as anxiety-like behavior and hypersociability at adulthood. Furthermore, mutant primary neurons had impaired neurite outgrowth which was rescued by CDPPB treatment. In conclusion, Lrrc7 mutant mice provide a valuable tool to model childhood emotional dysregulation and persistent mental health comorbidities. Moreover, our data highlight an important role of LRRC7 in mGluR5 signaling, which is a potential new treatment target for anxiety and social dysfunction.
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Affiliation(s)
- Chi Ho Chong
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Qi Li
- Department of Psychiatry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Priscilla Hoi Shan Mak
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Cypress Chun Pong Ng
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Eva Hin Wa Leung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Vicky Huiqi Tan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Anthony Kin Wang Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Grainne McAlonan
- The Sackler Centre for Translational Neurodevelopment and The Department of Forensic and Neurodevelopmental Sciences, King's College London, The South London and Maudsley NHS Foundation Trust, London, UK
| | - Siu Yuen Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
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Vijaykumar A, Ghassem-Zadeh S, Vidovic-Zdrilic I, Komitas K, Adameyko I, Krivanek J, Fu Y, Maye P, Mina M. Generation and characterization of DSPP-Cerulean/DMP1-Cherry reporter mice. Genesis 2019; 57:e23324. [PMID: 31271259 PMCID: PMC6939995 DOI: 10.1002/dvg.23324] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 12/24/2022]
Abstract
To gain a better understanding of the progression of progenitor cells in the odontoblast lineage, we have examined and characterized the expression of a series of GFP reporters during odontoblast differentiation. However, previously reported GFP reporters (pOBCol2.3-GFP, pOBCol3.6-GFP, and DMP1-GFP), similar to the endogenous proteins, are also expressed by bone-forming cells, which made it difficult to delineate the two cell types in various in vivo and in vitro studies. To overcome these difficulties we generated DSPP-Cerulean/DMP1-Cherry transgenic mice using a bacterial recombination strategy with the mouse BAC clone RP24-258g7. We have analyzed the temporal and spatial expression of both transgenes in tooth and bone in vivo and in vitro. This transgenic animal enabled us to visualize the interactions between odontoblasts and surrounding tissues including dental pulp, ameloblasts and cementoblasts. Our studies showed that DMP1-Cherry, similar to Dmp1, was expressed in functional and fully differentiated odontoblasts as well as osteoblasts, osteocytes and cementoblasts. Expression of DSPP-Cerulean transgene was limited to functional and fully differentiated odontoblasts and correlated with the expression of Dspp. This transgenic animal can help in the identification and isolation of odontoblasts at later stages of differentiation and help in better understanding of developmental disorders in dentin and odontoblasts.
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Affiliation(s)
- Anushree Vijaykumar
- Department of Craniofacial Sciences School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Sean Ghassem-Zadeh
- Department of Craniofacial Sciences School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Ivana Vidovic-Zdrilic
- Department of Craniofacial Sciences School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Karren Komitas
- Department of Craniofacial Sciences School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
- Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Jan Krivanek
- Center for Brain Research, Medical University of Vienna, Vienna, Austria
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Yu Fu
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Peter Maye
- Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut, Farmington, Connecticut
| | - Mina Mina
- Department of Craniofacial Sciences School of Dental Medicine, University of Connecticut, Farmington, Connecticut
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Chen S, Yang X, Yu M, Wang Z, Liu B, Liu M, Liu L, Ren M, Qi H, Zou J, Vucenik I, Zhu WG, Luo J. SIRT3 regulates cancer cell proliferation through deacetylation of PYCR1 in proline metabolism. Neoplasia 2019; 21:665-675. [PMID: 31108370 PMCID: PMC6526305 DOI: 10.1016/j.neo.2019.04.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/23/2019] [Accepted: 04/24/2019] [Indexed: 12/18/2022]
Abstract
SIRT3 is a major mitochondrial deacetylase, which regulates various metabolic pathways by deacetylation; however, the effect of SIRT3 on proline metabolism is not reported. Pyrroline-5-carboxylate reductase 1 (PYCR1) participates in proline synthesis process by catalyzing the reduction of P5C to proline with concomitant generation of NAD+ and NADP+. PYCR1 is highly expressed in various cancers, and it can promote the growth of tumor cells. Here, through immunoprecipitation and mass spectrometry, we found that PYCR1 is in SIRT3's interacting network. PYCR1 directly binds to SIRT3 both in vivo and in vitro. CBP is the acetyltransferase for PYCR1, whereas SIRT3 deacetylates PYCR1. We further identified that K228 is the major acetylation site for PYCR1. Acetylation of PYCR1 at K228 reduced its enzymatic activity by impairing the formation of the decamer of PYCR1. As a result, acetylation of PYCR1 at K228 inhibits cell proliferation, while deacetylation of PYCR1 mediated by SIRT3 increases PYCR1's activity. Our findings on the regulation of PYCR1 linked proline metabolism with SIRT3, CBP and cell growth, thus providing a potential approach for cancer therapy.
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Affiliation(s)
- Shuaiyi Chen
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Xin Yang
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Miao Yu
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Zhe Wang
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Boya Liu
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Minghui Liu
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Lu Liu
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Mengmeng Ren
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Hao Qi
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Junhua Zou
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China
| | - Ivana Vucenik
- Department of Medical and Research Technology, University of Maryland, Baltimore, MD 21201, USA
| | - Wei-Guo Zhu
- Department of Biochemistry and Molecular Biology, Shenzhen University School of Medicine, Shenzhen, 518060, China
| | - Jianyuan Luo
- Department of Medical Genetics, Peking University Health Science Center, Beijing, 100191, China; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Biophysics, Peking University Health Science Center, Beijing 100191, China.
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23
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Xie L, Song X, Lin H, Chen Z, Li Q, Guo T, Xu T, Su T, Xu M, Chang X, Wang LK, Liang B, Huang D. Aberrant activation of CYR61 enhancers in colorectal cancer development. J Exp Clin Cancer Res 2019; 38:213. [PMID: 31118064 PMCID: PMC6532222 DOI: 10.1186/s13046-019-1217-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/07/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND High expression of secreted matricellular protein cysteine-rich 61 (CYR61) correlates with poor prognosis in colorectal cancer (CRC). Aberrant enhancer activation has been shown to correlate with expression of key genes involved in cancer progression. However, such mechanisms in CYR61 transcription regulation remain unexplored. METHODS Expression of CYR61 was determined by immunohistochemistry (IHC), quantitative real-time PCR (qRT-PCR) and western blotting (WB) in CRC patients paraffin specimens and colon cell lines. ChIP-seq data of enhancer-characteristic histone modifications, in CRC tissues from the Gene Expression Omnibus (GEO) database, were reanalyzed to search for putative enhancers of CYR61. Dual-luciferase reporter assay was used to detected enhancer activity. Physical interactions between putative enhancers and CYR61 promoter were detected by chromosome conformation capture (3C) assay. Histone modification and transcription factors (TFs) enrichment were detected by ChIP-qPCR. Additionally, biological function of enhancers was investigated by transwell migration assays. RESULTS CRC tissues and cell lines expressed higher level of CYR61 than normal colon mucosa. Three putative enhancers located downstream of CYR61 were found in CRC tissues by ChIP-seq data reanalysis. Consistent with the ChIP-seq analysis results in the GEO database, the normal colon mucosal epithelial cell line NCM460 possessed no active CYR61 enhancers, whereas colon cancer cells exhibited different patterns of active CYR61 enhancers. HCT116 cells had an active Enhancer3, whereas RKO cells had both Enhancer1 and Enhancer3 active. Pioneer factor FOXA1 promoted CYR61 expression by recruiting CBP histone acetyltransferase binding and increasing promoter-enhancer looping frequencies and enhancer activity. CBP knockdown attenuated H3K27ac enrichment, promoter-enhancer looping frequencies, and enhancer activity. Small molecule compound 12-O-tetradecanoyl phorbol-13-acetate (TPA) treatment, which stimulated CYR61 expression, and verteporfin (VP) treatment, which inhibited CYR61 expression, confirmed that the enhancers regulated CYR61 expression. Knockdown and ectopic expression of CYR61 rescued cell migration changes induced by over-expressing and knockdown of FOXA1, respectively. CONCLUSIONS CYR61 enhancer activation, mediated by FOXA1 and CBP, occurs during CRC progression to up-regulate CYR61 expression and promote cell migration in CRC, suggesting inhibition of recruitment of FOXA1 and/or CBP to CYR61 enhancers may have therapeutic implications.
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Affiliation(s)
- Lingzhu Xie
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Xuhong Song
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Hao Lin
- Department of Gastroenterology, Shantou Central Hospital, Shantou, 515041 China
| | - Zikai Chen
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Qidong Li
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Tangfei Guo
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Tian Xu
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Ting Su
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Man Xu
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Xiaolan Chang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
| | - Long-Kun Wang
- Department of Clinical Laboratory, Jiujiang First People’s Hospital, Jiujiang, 332000 China
| | - Bin Liang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
- Department of Cell Biology and Genetics, Shantou University Medical College, Complex Building, Room 602, No. 22 Xinling Road, Shantou, Guangdong China
| | - Dongyang Huang
- Department of Cell Biology and Genetics, Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, 515041 China
- Department of Cell Biology and Genetics, Shantou University Medical College, Complex Building, Room 602, No. 22 Xinling Road, Shantou, Guangdong China
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Schulten HJ, Hussein D. Array expression meta-analysis of cancer stem cell genes identifies upregulation of PODXL especially in DCC low expression meningiomas. PLoS One 2019; 14:e0215452. [PMID: 31083655 PMCID: PMC6513070 DOI: 10.1371/journal.pone.0215452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 04/02/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Meningiomas are the most common intracranial tumors, with a subset of cases bearing a progressive phenotype. The DCC netrin 1 receptor (DCC) is a candidate gene for early meningioma progression. Cancer stem cell (CSC) genes are emerging as cancer therapeutic targets, as their expression is frequently associated with aggressive tumor phenotypes. The main objective of the study was to identify deregulated CSC genes in meningiomas. MATERIALS AND METHODS Interrogating two expression data repositories, significantly differentially expressed genes (DEGs) were determined using DCC low vs. DCC high expression groups and WHO grade I (GI) vs. grade II + grade III (GII + GIII) comparison groups. Human stem cell (SC) genes were compiled from two published data sets and were extracted from the DEG lists. Biofunctional analysis was performed to assess associations between genes or molecules. RESULTS In the DCC low vs. DCC high expression groups, we assessed seven studies representing each between seven and 58 samples. The type I transmembrane protein podocalyxin like (PODXL) was markedly upregulated in DCC low expression meningiomas in six studies. Other CSC genes repeatedly deregulated included, e.g., BMP/retinoic acid inducible neural specific 1 (BRINP1), prominin 1 (PROM1), solute carrier family 24 member 3 (SLC24A3), rRho GTPase activating protein 28 (ARHGAP28), Kruppel like factor 5 (KLF5), and leucine rich repeat containing G protein-coupled receptor 4 (LGR4). In the GI vs. GII + GIII comparison groups, we assessed six studies representing each between nine and 68 samples. DNA topoisomerase 2-alpha (TOP2A) was markedly upregulated in GII + GIII meningiomas in four studies. Other CSC genes repeatedly deregulated included, e.g., ARHGAP28 and PODXL. Network analysis revealed associations of molecules with, e.g., cellular development and movement; nervous system development and function; and cancer. CONCLUSIONS This meta-analysis on meningiomas identified a comprehensive list of deregulated CSC genes across different array expression studies. Especially, PODXL is of interest for functional assessment in progressive meningiomas.
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Affiliation(s)
- Hans-Juergen Schulten
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- * E-mail:
| | - Deema Hussein
- King Fahad Medical Research Center, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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25
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Ayinmode AB, Agbajelola VI. Molecular identification of Cryptosporidium parvum in rabbits (Oryctolagus cuniculus) in Nigeria. Ann Parasitol 2019; 65:237-243. [PMID: 31599539 DOI: 10.17420/ap6503.205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Rabbits are commonly reared by households and farmers in Nigeria as a source of meat, but there is no information available on Cryptosporidium genotypes occurring in rabbits in Nigeria. Fecal samples were collected from 107 rabbits and examined by modified Ziehl-Neelsen technique for the presence of Cryptosporidium oocysts. An infection rate of 3.7% (4/107) was obtained and all microscopy-positive samples were genotyped and subtyped to determine the circulating Cryptosporidium species using sequence analysis of the 18S rRNA gene and 60-kDa glycoprotein (gp60) gene, respectively. All the four microscopy-positive samples were identified as C. parvum by 18S rRNA gene. However, analysis of the gp60 gene revealed the presence of C. parvum subtype IIc, which is commonly found in humans in two isolates. These findings indicate natural infection of rabbits with C. parvum and underscore the need to investigate the probable role of animal hosts in the epidemiology of Cryptosporidium infection. This is the first report on genetic characterization of Cryptosporidium infecting rabbits in Nigeria.
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Affiliation(s)
- Adekunle B. Ayinmode
- Department of Veterinary Parasitology and Entomology, University of Ibadan, Ibadan, Nigeria
| | - Victor I. Agbajelola
- Department of Veterinary Parasitology and Entomology, University of Ibadan, Ibadan, Nigeria
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26
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Novo D, Heath N, Mitchell L, Caligiuri G, MacFarlane A, Reijmer D, Charlton L, Knight J, Calka M, McGhee E, Dornier E, Sumpton D, Mason S, Echard A, Klinkert K, Secklehner J, Kruiswijk F, Vousden K, Macpherson IR, Blyth K, Bailey P, Yin H, Carlin LM, Morton J, Zanivan S, Norman JC. Mutant p53s generate pro-invasive niches by influencing exosome podocalyxin levels. Nat Commun 2018; 9:5069. [PMID: 30498210 PMCID: PMC6265295 DOI: 10.1038/s41467-018-07339-y] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/17/2018] [Indexed: 12/28/2022] Open
Abstract
Mutant p53s (mutp53) increase cancer invasiveness by upregulating Rab-coupling protein (RCP) and diacylglycerol kinase-α (DGKα)-dependent endosomal recycling. Here we report that mutp53-expressing tumour cells produce exosomes that mediate intercellular transfer of mutp53's invasive/migratory gain-of-function by increasing RCP-dependent integrin recycling in other tumour cells. This process depends on mutp53's ability to control production of the sialomucin, podocalyxin, and activity of the Rab35 GTPase which interacts with podocalyxin to influence its sorting to exosomes. Exosomes from mutp53-expressing tumour cells also influence integrin trafficking in normal fibroblasts to promote deposition of a highly pro-invasive extracellular matrix (ECM), and quantitative second harmonic generation microscopy indicates that this ECM displays a characteristic orthogonal morphology. The lung ECM of mice possessing mutp53-driven pancreatic adenocarcinomas also displays increased orthogonal characteristics which precedes metastasis, indicating that mutp53 can influence the microenvironment in distant organs in a way that can support invasive growth.
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Affiliation(s)
- David Novo
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Nikki Heath
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Louise Mitchell
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | | | - Amanda MacFarlane
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Dide Reijmer
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Laura Charlton
- School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - John Knight
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Monika Calka
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Ewan McGhee
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Emmanuel Dornier
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - David Sumpton
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Susan Mason
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Arnaud Echard
- Membrane Traffic and Cell Division Lab, Cell Biology and Infection Department, Institut Pasteur, 25-28 rue du Dr Roux, Paris, 75724, France
| | - Kerstin Klinkert
- Membrane Traffic and Cell Division Lab, Cell Biology and Infection Department, Institut Pasteur, 25-28 rue du Dr Roux, Paris, 75724, France
| | - Judith Secklehner
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Inflammation, Repair & Development, National Heart & Lung Institute, Imperial College London, London, SW7 2AZ, UK
| | - Flore Kruiswijk
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
| | - Karen Vousden
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
- Francis Crick Institute, 1 Midland Road, London, NW1 1ST, UK
| | - Iain R Macpherson
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Karen Blyth
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Peter Bailey
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, G611QH, UK
| | - Huabing Yin
- School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Leo M Carlin
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Inflammation, Repair & Development, National Heart & Lung Institute, Imperial College London, London, SW7 2AZ, UK
| | - Jennifer Morton
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Sara Zanivan
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Jim C Norman
- Beatson Institute for Cancer Research, Glasgow, G61 1BD, Scotland, UK.
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK.
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27
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Kingma HA, van der Sluijs FH, Heiner-Fokkema MR. Fast screening of N-glycosylation disorders by sialotransferrin profiling with capillary zone electrophoresis. Ann Clin Biochem 2018; 55:693-701. [PMID: 29792046 PMCID: PMC6196592 DOI: 10.1177/0004563218779609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2018] [Indexed: 11/26/2022]
Abstract
Background Congenital disorders of glycosylation (CDG) are a growing group of rare genetic disorders. The most frequently used screening method is sialotransferrin profiling using isoelectric focusing (IEF). Capillary zone electrophoresis (CZE) may be a simple and fast alternative. We investigated the Capillarys™ CDT assay (Sebia, France) to screen for N-glycosylation disorders, using IEF as gold standard. Methods Intra- and inter-assay precision were established, and analyses in heparin-anticoagulated plasma and serum were compared. Accuracy was assessed by comparing IEF and CZE profiles of 153 samples, including 49 normal, 53 CDG type I, 2 CDG type II, 1 combined CDG type I and type II and 48 samples with a Tf-polymorphism. Neuraminidase-treated plasma was analysed to discriminate CDG and Tf-polymorphisms using samples of 52 subjects (25 had a confirmed Tf-polymorphism). Age-dependent reference values were established using profiles of 312 samples. Results Heparin-plasma is as suitable as serum for CDG screening with the Capillarys™ CDT assay. The precision of the method is high, with a limit of quantification (LOQ) of 0.5%. All profiles, including CDG and Tf-polymorphisms, were correctly identified with CZE. Forty-nine of 52 neuraminidase-treated samples correctly identified the presence/absence of a Tf-polymorphism. Interferences in 3/52 samples hampered interpretation. Sialo-Tf profiles were dependent of age, in particular in the first three months of age. Conclusions CZE analysis with the Capillarys™ CDT kit (Sebia) is a fast and reliable method for screening of N-glycosylation defects. Tf-polymorphisms could be excluded after overnight incubation with neuraminidase.
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Affiliation(s)
- HA Kingma
- Laboratory of Metabolic Diseases, Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - FH van der Sluijs
- Laboratory of Metabolic Diseases, Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - MR Heiner-Fokkema
- Laboratory of Metabolic Diseases, Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Mikami T, Bologna-Molina R, Mosqueda-Taylor A, Ogawa I, Pereira-Prado V, Fujiwara N, Pires FR, Carlos R, Takata T, Takeda Y. Pathogenesis of primordial odontogenic tumour based on tumourigenesis and odontogenesis. Oral Dis 2018; 24:1226-1234. [PMID: 29908099 DOI: 10.1111/odi.12914] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Primordial odontogenic tumour (POT) is a rare benign mixed epithelial and mesenchymal odontogenic tumour. POT is composed of dental papilla-like tissue covered with cuboidal to columnar epithelium that resembles to inner and outer enamel epithelium of the enamel organ without dental hard tissue formation. The aim of this study was to examine pathogenesis of POT based on tumourigenesis and odontogenesis. SUBJECTS AND METHODS Six cases of POT were submitted for study. DNA analysis and transcriptome analysis were performed by next-generation sequencing. Expression of amelogenin, ameloblastin and dentin sialophosphoprotein (DSPP) was examined by immunohistochemistry. RESULTS There were no gene mutations detected in any of analysed 151 cancer- and 42 odontogenesis-associated genes. Enamel protein-coding genes of Amelx, Ambn and Enam, and dentin protein-coding genes of Col1a1, Dspp, Nes and Dmp1 were expressed, whereas expression of dentinogenesis-associated genes of Bglap, Ibsp and Nfic was negative or very weak suggesting inhibition of dentin formation in POT after odontoblast differentiation. Immunoreactivity of amelogenin, ameloblastin and DSPP was detected in POT. CONCLUSIONS Pathogenesis of POT is considered to be genetically different from other odontogenic tumours. It is suggested that inhibition of enamel and dentin formation in POT is due to defects in dentin formation process.
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Affiliation(s)
- Toshinari Mikami
- Division of Anatomical and Cellular Pathology, Department of Pathology, Iwate Medical University, Yahaba Shiwa-gun, Japan
| | - Ronell Bologna-Molina
- Molecular Pathology Area, Faculty of Dentistry, Universidad de la República, Montevideo, Uruguay
| | | | - Ikuko Ogawa
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - Vanesa Pereira-Prado
- Molecular Pathology Area, Faculty of Dentistry, Universidad de la República, Montevideo, Uruguay
| | - Naoki Fujiwara
- Division of Functional Morphology, Department of Anatomy, Iwate Medical University, Yahaba Shiwa-gun, Japan
| | - Fabio Ramoa Pires
- School of Dentistry, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Roman Carlos
- Pathology Division, Centro Clínico de Cabeza y Cuello/Hospital Herrera-Llerandi, Guatemala City, Guatemala
| | - Takashi Takata
- Department of Oral and Maxillofacial Pathobiology, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yasunori Takeda
- Division of Clinical Pathology, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University, Morioka, Japan
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29
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Yamakawa S, Niwa T, Karakida T, Kobayashi K, Yamamoto R, Chiba R, Yamakoshi Y, Hosoya N. Effects of Er:YAG and Diode Laser Irradiation on Dental Pulp Cells and Tissues. Int J Mol Sci 2018; 19:ijms19082429. [PMID: 30126087 PMCID: PMC6121961 DOI: 10.3390/ijms19082429] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 08/13/2018] [Indexed: 12/16/2022] Open
Abstract
Vital pulp therapy (VPT) is to preserve the nerve and maintain healthy dental pulp tissue. Laser irradiation (LI) is beneficial for VPT. Understanding how LI affects dental pulp cells and tissues is necessary to elucidate the mechanism of reparative dentin and dentin regeneration. Here, we show how Er:YAG-LI and diode-LI modulated cell proliferation, apoptosis, gene expression, protease activation, and mineralization induction in dental pulp cells and tissues using cell culture, immunohistochemical, genetic, and protein analysis techniques. Both LIs promoted proliferation in porcine dental pulp-derived cell lines (PPU-7), although the cell growth rate between the LIs was different. In addition to proliferation, both LIs also caused apoptosis; however, the apoptotic index for Er:YAG-LI was higher than that for diode-LI. The mRNA level of odontoblastic gene markers-two dentin sialophosphoprotein splicing variants and matrix metalloprotease (MMP)20 were enhanced by diode-LI, whereas MMP2 was increased by Er:YAG-LI. Both LIs enhanced alkaline phosphatase activity, suggesting that they may help induce PPU-7 differentiation into odontoblast-like cells. In terms of mineralization induction, the LIs were not significantly different, although their cell reactivity was likely different. Both LIs activated four MMPs in porcine dental pulp tissues. We helped elucidate how reparative dentin is formed during laser treatments.
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Affiliation(s)
- Shunjiro Yamakawa
- Department of Endodontology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Takahiko Niwa
- Department of Periodontology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Takeo Karakida
- Department of Biochemistry and Molecular Biology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Kazuyuki Kobayashi
- Department of Dental Hygiene, Tsurumi Junior College, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Ryuji Yamamoto
- Department of Biochemistry and Molecular Biology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Risako Chiba
- Department of Biochemistry and Molecular Biology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Yasuo Yamakoshi
- Department of Biochemistry and Molecular Biology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
| | - Noriyasu Hosoya
- Department of Endodontology, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan.
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Hu A, Li X, Chen D, Lu T, Huang J, Xu X, Chen D, Xiong F. [Analysis of DSPP gene mutation in a Chinese pedigree affected with hereditary dentinogenesis imperfecta]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2018; 35:511-514. [PMID: 30098245 DOI: 10.3760/cma.j.issn.1003-9406.2018.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To analyze the clinical phenotype of a Chinese pedigree affected with hereditary dentinogenesis imperfecta and mutation of dentin sialophosphoprotein (DSPP) gene. METHODS Affected members underwent intraoral photography, dental film and panoramic radiography. Genomic DNA was extracted from peripheral venous blood samples. Coding regions of the DSPP gene were subjected to PCR amplification and Sanger sequencing. Functional effect of the mutation was predicted with SIFT and PolyPhen-2. The tertiary structure of wild type and mutant proteins were predicted by Swiss-Port. RESULTS A heterozygous c.50C to T (p.P17L) mutation was identified in exon 2 of the DSPP gene in the proband and her father. The same mutation was not found among 200 unrelated healthy controls. The Pro-17 residues and its surrounding positions in DSPP are highly conserved across various species. The mutation was predicted to be damaging to the structure of DSPP protein. CONCLUSION The c.50C to T (p.P17L) mutation of the DSPP gene probably underlies the disease in this pedigree. Above finding has expanded the spectrum of DSPP gene mutations and provided a basis for genetic counseling and prenatal diagnosis for this family.
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Affiliation(s)
- Aiqin Hu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China. ;
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Nikitakis NG, Gkouveris I, Aseervatham J, Barahona K, Ogbureke KUE. DSPP-MMP20 gene silencing downregulates cancer stem cell markers in human oral cancer cells. Cell Mol Biol Lett 2018; 23:30. [PMID: 30002682 PMCID: PMC6040065 DOI: 10.1186/s11658-018-0096-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 06/19/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Recent findings indicate that dentin sialophosphoprotein (DSPP) and matrix metalloproteinase (MMP) 20 interact in oral squamous cell carcinoma (OSCC). The objective of this study was to determine the effects of DSPP/MMP20 gene silencing on oral cancer stem cell (OCSC) markers. METHODS The expression of well-established OCSC markers: ABCG2; ALDH1; CD133; CD44; BMI1; LGR4, and Podoplanin in DSPP/MMP20-silenced OSCC cell line, OSC2, and controls were assayed by western blot (WB), and flow cytometry techniques. The sensitivity of OSC2 cells to cisplatin following DSPP/MMP20 silencing was also determined. RESULTS DSPP/MMP20 silencing resulted in downregulation of OCSC markers, more profoundly ABCG2 (84%) and CD44 (81%), following double silencing. Furthermore, while treatment of parent (pre-silenced) OSC2 cells with cisplatin resulted in upregulation of OCSC markers, DSPP/MMP20-silenced OSC2 cells similarly treated resulted in profound downregulation of OCSC markers (72 to 94% at 50 μM of cisplatin), and a marked reduction in the proportion of ABCG2 and ALDH1 positive cells (~ 1%). CONCLUSIONS We conclude that the downregulation of OCSC markers may signal a reduction in OCSC population following MMP20/DSPP silencing in OSCC cells, while also increasing their sensitivity to cisplatin. Thus, our findings suggest a potential role for DSPP and MMP20 in sustaining OCSC population in OSCCs, possibly, through mechanism(s) that alter OCSC sensitivity to treatment with chemotherapeutic agents such as cisplatin.
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Affiliation(s)
- Nikolaos G. Nikitakis
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Sciences Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX 77054 USA
- Department of Oral Pathology and Medicine, School of Dentistry, University of Athens, Athens, Greece
| | - Ioannis Gkouveris
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Sciences Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX 77054 USA
| | - Jaya Aseervatham
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Sciences Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX 77054 USA
| | - Kelvin Barahona
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Sciences Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX 77054 USA
| | - Kalu U. E. Ogbureke
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Sciences Center at Houston School of Dentistry, 7500 Cambridge Street, Houston, TX 77054 USA
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Falch CM, Sundaram AYM, Øystese KA, Normann KR, Lekva T, Silamikelis I, Eieland AK, Andersen M, Bollerslev J, Olarescu NC. Gene expression profiling of fast- and slow-growing non-functioning gonadotroph pituitary adenomas. Eur J Endocrinol 2018; 178:295-307. [PMID: 29259037 DOI: 10.1530/eje-17-0702] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/19/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Reliable biomarkers associated with aggressiveness of non-functioning gonadotroph adenomas (GAs) are lacking. As the growth of tumor remnants is highly variable, molecular markers for growth potential prediction are necessary. We hypothesized that fast- and slow-growing GAs present different gene expression profiles and reliable biomarkers for tumor growth potential could be identified, focusing on the specific role of epithelial-mesenchymal transition (EMT). DESIGN AND METHODS Eight GAs selected for RNA sequencing were equally divided into fast- and slow-growing group by the tumor volume doubling time (TVDT) median (27.75 months). Data were analyzed by tophat2, cufflinks and cummeRbund pipeline. 40 genes were selected for RT-qPCR validation in 20 GAs based on significance, fold-change and pathway analyses. The effect of silencing MTDH (metadherin) and EMCN (endomucin) on in vitro migration of human adenoma cells was evaluated. RESULTS 350 genes were significantly differentially expressed (282 genes upregulated and 68 downregulated in the fast group, P-adjusted <0.05). Among 40 selected genes, 11 showed associations with TVDT (-0.669<R<-0.46, P < 0.05). These were PCDH18, UNC5D, EMCN, MYO1B, GPM6A and six EMT-related genes (SPAG9, SKIL, MTDH, HOOK1, CNOT6L and PRKACB). MTDH, but not EMCN, demonstrated involvement in cell migration and association with EMT markers. CONCLUSIONS Fast- and slow-growing GAs present different gene expression profiles, and genes related to EMT have higher expression in fast-growing tumors. In addition to MTDH, identified as an important contributor to aggressiveness, the other genes might represent markers for tumor growth potential and possible targets for drug therapy.
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Affiliation(s)
- Camilla Maria Falch
- Section of Specialized EndocrinologyDepartment of Endocrinology
- Research Institute for Internal MedicineOslo University Hospital, Oslo, Norway
- Department of Endocrinology and MetabolismOdense University Hospital, Odense, Denmark
- University of Southern DenmarkOdense, Denmark
| | | | - Kristin Astrid Øystese
- Section of Specialized EndocrinologyDepartment of Endocrinology
- Faculty of MedicineUniversity of Oslo, Oslo, Norway
| | - Kjersti Ringvoll Normann
- Section of Specialized EndocrinologyDepartment of Endocrinology
- Research Institute for Internal MedicineOslo University Hospital, Oslo, Norway
- Faculty of MedicineUniversity of Oslo, Oslo, Norway
| | - Tove Lekva
- Research Institute for Internal MedicineOslo University Hospital, Oslo, Norway
| | | | | | - Marianne Andersen
- Department of Endocrinology and MetabolismOdense University Hospital, Odense, Denmark
| | - Jens Bollerslev
- Section of Specialized EndocrinologyDepartment of Endocrinology
- Faculty of MedicineUniversity of Oslo, Oslo, Norway
| | - Nicoleta Cristina Olarescu
- Section of Specialized EndocrinologyDepartment of Endocrinology
- Research Institute for Internal MedicineOslo University Hospital, Oslo, Norway
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Lai TH, Chang FW, Lin JJ, Ling QD. Gene expression of human endometrial L-selectin ligand in relation to the phases of the natural menstrual cycle. Sci Rep 2018; 8:1443. [PMID: 29362381 PMCID: PMC5780486 DOI: 10.1038/s41598-018-19911-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 01/10/2018] [Indexed: 02/07/2023] Open
Abstract
This study investigates peptide components of L-selectin ligand (LSL) and their gene expressions in human endometrium during the natural menstrual cycle. We recruited 41 endometrial samples from reproductive-aged women with leiomyoma and undergoing hysterectomy and 11 endometrial samples from menopausal women as controls. Immunohistochemistry revealed strong MECA-79 expression from the early through the mid-secretory phase and low expression in menopausal endometrium. Five peptide components of LSL were detected in reproductive and menopausal endometrium by one-step quantitative RT-PCR: podocalyxin, endomucin, nepmucin, GlyCAM-1, and CD34. Endomucin differed significantly between the proliferative and early-secretory phases. CHST2 and CHST4 genes (which are involved in the generation of LSL epitopes) were expressed without significant differences among phases. The gene expression of progesterone receptor decreased from the proliferative to the late-secretory phase, and the difference was significant. However, estrogen receptor α expression showed stability among phases. The significant expression of endomucin between the proliferative and early-secretory phases might play a vital role in endometrial receptivity. Further studies are needed to investigate the factors that regulate the expression of endomucin and other LSL peptide components in different phases of the menstrual cycle.
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Affiliation(s)
- Tsung-Hsuan Lai
- Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, 10693, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City, 24205, Taiwan
- Institute of Systems Biology and Bioinformatics, National Central University, Taoyuan City, 32001, Taiwan
| | - Fung-Wei Chang
- Department of Obstetrics and Gynecology, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan
| | - Jun-Jie Lin
- Institute of Systems Biology and Bioinformatics, National Central University, Taoyuan City, 32001, Taiwan
- Cathay Medical Research Institute, Cathay General Hospital, New Taipei City, 22174, Taiwan
| | - Qing-Dong Ling
- Institute of Systems Biology and Bioinformatics, National Central University, Taoyuan City, 32001, Taiwan.
- Cathay Medical Research Institute, Cathay General Hospital, New Taipei City, 22174, Taiwan.
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Park-Windhol C, Ng YS, Yang J, Primo V, Saint-Geniez M, D'Amore PA. Endomucin inhibits VEGF-induced endothelial cell migration, growth, and morphogenesis by modulating VEGFR2 signaling. Sci Rep 2017; 7:17138. [PMID: 29215001 PMCID: PMC5719432 DOI: 10.1038/s41598-017-16852-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 11/19/2017] [Indexed: 12/19/2022] Open
Abstract
Angiogenesis is central to both normal and pathologic processes. Endothelial cells (ECs) express O-glycoproteins that are believed to play important roles in vascular development and stability. Endomucin-1 (EMCN) is a type I O-glycosylated, sialic-rich glycoprotein, specifically expressed by venous and capillary endothelium. Evidence has pointed to a potential role for EMCN in angiogenesis but it had not been directly investigated. In this study, we examined the role of EMCN in angiogenesis by modulating EMCN levels both in vivo and in vitro. Reduction of EMCN in vivo led to the impairment of angiogenesis during normal retinal development in vivo. To determine the cellular basis of this inhibition, gain- and loss-of-function studies were performed in human retinal EC (HREC) in vitro by EMCN over-expression using adenovirus or EMCN gene knockdown by siRNA. We show that EMCN knockdown reduced migration, inhibited cell growth without compromising cell survival, and suppressed tube morphogenesis of ECs, whereas over-expression of EMCN led to increased migration, proliferation and tube formation. Furthermore, knockdown of EMCN suppressed VEGF-induced signaling as measured by decreased phospho-VEGFR2, phospho-ERK1/2 and phospho-p38-MAPK levels. These results suggest a novel role for EMCN as a potent regulator of angiogenesis and point to its potential as a new therapeutic target for angiogenesis-related diseases.
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Affiliation(s)
- Cindy Park-Windhol
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yin Shan Ng
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Jinling Yang
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Vincent Primo
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Magali Saint-Geniez
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Patricia A D'Amore
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Boston, MA, USA.
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
- Department of Pathology, Harvard Medical School, Boston, MA, USA.
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Toyoda H, Nagai Y, Kojima A, Kinoshita-Toyoda A. Podocalyxin as a major pluripotent marker and novel keratan sulfate proteoglycan in human embryonic and induced pluripotent stem cells. Glycoconj J 2017; 34:817-823. [PMID: 28980094 DOI: 10.1007/s10719-017-9801-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 10/27/2016] [Accepted: 12/22/2016] [Indexed: 12/27/2022]
Abstract
Podocalyxin (PC) was first identified as a heavily sialylated transmembrane protein of glomerular podocytes. Recent studies suggest that PC is a remarkable glycoconjugate that acts as a universal glyco-carrier. The glycoforms of PC are responsible for multiple functions in normal tissue, human cancer cells, human embryonic stem cells (hESCs), and human induced pluripotent stem cells (hiPSCs). PC is employed as a major pluripotent marker of hESCs and hiPSCs. Among the general antibodies for human PC, TRA-1-60 and TRA-1-81 recognize the keratan sulfate (KS)-related structures. Therefore, It is worthwhile to summarize the outstanding chemical characteristic of PC, including the KS-related structures. Here, we review the glycoforms of PC and discuss the potential of PC as a novel KS proteoglycan in undifferentiated hESCs and hiPSCs.
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Affiliation(s)
- Hidenao Toyoda
- Faculty of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Yuko Nagai
- Faculty of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Aya Kojima
- Faculty of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Akiko Kinoshita-Toyoda
- Faculty of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
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Kim YK, Refaeli I, Brooks CR, Jing P, Gulieva RE, Hughes MR, Cruz NM, Liu Y, Churchill AJ, Wang Y, Fu H, Pippin JW, Lin LY, Shankland SJ, Vogl AW, McNagny KM, Freedman BS. Gene-Edited Human Kidney Organoids Reveal Mechanisms of Disease in Podocyte Development. Stem Cells 2017; 35:2366-2378. [PMID: 28905451 DOI: 10.1002/stem.2707] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 09/04/2017] [Indexed: 11/07/2022]
Abstract
A critical event during kidney organogenesis is the differentiation of podocytes, specialized epithelial cells that filter blood plasma to form urine. Podocytes derived from human pluripotent stem cells (hPSC-podocytes) have recently been generated in nephron-like kidney organoids, but the developmental stage of these cells and their capacity to reveal disease mechanisms remains unclear. Here, we show that hPSC-podocytes phenocopy mammalian podocytes at the capillary loop stage (CLS), recapitulating key features of ultrastructure, gene expression, and mutant phenotype. hPSC-podocytes in vitro progressively establish junction-rich basal membranes (nephrin+ podocin+ ZO-1+ ) and microvillus-rich apical membranes (podocalyxin+ ), similar to CLS podocytes in vivo. Ultrastructural, biophysical, and transcriptomic analysis of podocalyxin-knockout hPSCs and derived podocytes, generated using CRISPR/Cas9, reveals defects in the assembly of microvilli and lateral spaces between developing podocytes, resulting in failed junctional migration. These defects are phenocopied in CLS glomeruli of podocalyxin-deficient mice, which cannot produce urine, thereby demonstrating that podocalyxin has a conserved and essential role in mammalian podocyte maturation. Defining the maturity of hPSC-podocytes and their capacity to reveal and recapitulate pathophysiological mechanisms establishes a powerful framework for studying human kidney disease and regeneration. Stem Cells 2017;35:2366-2378.
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Affiliation(s)
- Yong Kyun Kim
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Kidney Research Institute, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Ido Refaeli
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Craig R Brooks
- Division of Nephrology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Peifeng Jing
- Department of Electrical Engineering, University of Washington, Seattle, Washington, USA
| | - Ramila E Gulieva
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Kidney Research Institute, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Michael R Hughes
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nelly M Cruz
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Kidney Research Institute, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Yannan Liu
- Department of Electrical Engineering, University of Washington, Seattle, Washington, USA
| | - Angela J Churchill
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Kidney Research Institute, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Yuliang Wang
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, Washington, USA
| | - Hongxia Fu
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Division of Hematology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Bioengineering, University of Washington School of Medicine, Seattle, Washington, USA
| | - Jeffrey W Pippin
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Lih Y Lin
- Department of Electrical Engineering, University of Washington, Seattle, Washington, USA
| | - Stuart J Shankland
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - A Wayne Vogl
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kelly M McNagny
- The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Benjamin S Freedman
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Kidney Research Institute, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Institute for Stem Cell and Regenerative Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
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Seo YM, Park SJ, Lee HK, Park JC. Copine-7 binds to the cell surface receptor, nucleolin, and regulates ciliogenesis and Dspp expression during odontoblast differentiation. Sci Rep 2017; 7:11283. [PMID: 28900213 PMCID: PMC5595916 DOI: 10.1038/s41598-017-11641-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/25/2017] [Indexed: 12/30/2022] Open
Abstract
Tooth development is a progressive process regulated by interactions between epithelial and mesenchymal tissues. Our previous studies showed that copine-7 (Cpne7), a dental epithelium-derived protein, is a signalling molecule that is secreted by preameloblasts and regulates the differentiation of preodontoblasts into odontoblasts. However, the mechanisms involved in the translocation of Cpne7 from preameloblasts to preodontoblasts and the functions of Cpne7 during odontogenesis are poorly understood. Here, we showed that the internalization of Cpne7 was mediated primarily by caveolae. This process was initiated by Cpne7 binding to the cell surface protein, nucleolin. Treatment with recombinant Cpne7 protein (rCpne7) in human dental pulp cells (hDPCs) caused an increase in the number of ciliated cells. The expression level of cilium components, Ift88 and Kif3a, and Dspp were increased by rCpne7. Treatment with Ift88 siRNA in hDPCs and MDPC-23 cells significantly down-regulated the expression of Dspp, an odontoblastic differentiation marker gene. Furthermore, the treatment with nucleolin siRNA in MDPC-23 cells decreased the expression of Dmp1, Dspp, and cilium components. Our findings suggested that the binding of Cpne7 with its receptor, nucleolin, has an important function involving Cpne7 internalization into preodontoblasts and regulation of Dspp expression through ciliogenesis during odontoblast differentiation.
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Affiliation(s)
- You-Mi Seo
- Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Su-Jin Park
- Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Hye-Kyung Lee
- Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Joo-Cheol Park
- Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea.
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Ahmed K, LaPierre MP, Gasser E, Denzler R, Yang Y, Rülicke T, Kero J, Latreille M, Stoffel M. Loss of microRNA-7a2 induces hypogonadotropic hypogonadism and infertility. J Clin Invest 2017; 127:1061-1074. [PMID: 28218624 DOI: 10.1172/jci90031] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/15/2016] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs (miRNAs) are negative modulators of gene expression that fine-tune numerous biological processes. miRNA loss-of-function rarely results in highly penetrant phenotypes, but rather, influences cellular responses to physiologic and pathophysiologic stresses. Here, we have reported that a single member of the evolutionarily conserved miR-7 family, miR-7a2, is essential for normal pituitary development and hypothalamic-pituitary-gonadal (HPG) function in adulthood. Genetic deletion of mir-7a2 causes infertility, with low levels of gonadotropic and sex steroid hormones, small testes or ovaries, impaired spermatogenesis, and lack of ovulation in male and female mice, respectively. We found that miR-7a2 is highly expressed in the pituitary, where it suppresses golgi glycoprotein 1 (GLG1) expression and downstream bone morphogenetic protein 4 (BMP4) signaling and also reduces expression of the prostaglandin F2a receptor negative regulator (PTGFRN), an inhibitor of prostaglandin signaling and follicle-stimulating hormone (FSH) and luteinizing hormone (LH) secretion. Our results reveal that miR-7a2 critically regulates sexual maturation and reproductive function by interconnecting miR-7 genomic circuits that regulate FSH and LH synthesis and secretion through their effects on pituitary prostaglandin and BMP4 signaling.
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Abstract
The extracellular matrix (ECM) of bone and dentin contains several non-collagenous proteins. One category of non-collagenous protein is termed the SIBLING (Small Integrin-Binding LIgand, N-linked Glycoprotein) family, that includes osteopontin (OPN), bone sialoprotein (BSP), dentin matrix protein 1 (DMP1), dentin sialophosphoprotein (DSPP), and matrix extracellular phosphoglycoprotein (MEPE). These polyanionic SIBLING proteins are believed to play key biological roles in the mineralization of bone and dentin. Although the specific mechanisms involved in controlling bone and dentin formation are still unknown, it is clear that some functions of the SIBLING family members are dependent on the nature and extent of post-translational modifications (PTMs), such as phosphorylation, glycosylation, and proteolytic processing, since these PTMs would have significant effects on their structure. OPN and BSP are present in the ECM of bone and dentin as full-length forms, whereas amino acid sequencing indicates that DMP1 and DSPP exist as proteolytically processed fragments that result from scission of X-Asp bonds. We hypothesized that the processing of DMP1 and DSPP is catalyzed by the PHEX enzyme, since this protein, an endopeptidase that is predominantly expressed in bone and tooth, has a strong preference for cleavage at the NH2-terminus of aspartyl residue. We envision that the proteolytic processing of DMP1 and DSPP may be an activation process that plays a significant, crucial role in osteogenesis and dentinogenesis, and that a failure in this processing would cause defective mineralization in bone and dentin, as observed in X-linked hypophosphatemic rickets.
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Affiliation(s)
- C Qin
- The Department of Endodontics and Periodontics, University of Texas-Houston Health Science Center, Dental Branch, Houston, TX 77030, USA.
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40
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Nociti FH, Foster BL, Barros SP, Darveau RP, Somerman MJ. Cementoblast Gene Expression is Regulated by Porphyromonas gingivalis Lipopolysaccharide Partially via Toll-like Receptor-4/MD-2. J Dent Res 2016; 83:602-7. [PMID: 15271967 DOI: 10.1177/154405910408300804] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Lipopolysaccharides are potent inflammatory mediators considered to contribute to destruction of periodontal tissues. Here, we hypothesized that Porphyromonas gingivalis lipopolysaccharide (P-LPS) treatment would regulate gene expression in murine cementoblasts through Toll-like receptor 4. Real-time (RT)-PCR and Northern blot analysis indicated that P-LPS decreased expression of transcripts for osteocalcin (OCN) and receptor activator of nuclear factor κB ligand (RANKL). In contrast, a dose-dependent up-regulation in mRNA levels for osteopontin (OPN) and osteoprotegerin (OPG) was observed. Similarly, ELISA demonstrated decreased RANKL and increased OPG levels. A monoclonal antibody specific for mouse TLR-4/MD-2 partially neutralized the P-LPS effect on cementoblasts. These results indicate that exposure of cementoblasts to P-LPS can alter cell function by regulating markers of osteoclastic activity ( e.g., RANKL/OPG), thereby potentially affecting the inflammation-associated resorption of mineralized tissues.
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MESH Headings
- Animals
- Antigens, Ly/drug effects
- Antigens, Ly/genetics
- Antigens, Ly/metabolism
- Blotting, Northern
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cells, Cultured
- Dental Cementum/cytology
- Dental Cementum/drug effects
- Dental Cementum/metabolism
- Dose-Response Relationship, Drug
- Gene Expression Regulation/drug effects
- Glycoproteins/genetics
- Glycoproteins/metabolism
- Lipopolysaccharide Receptors/drug effects
- Lipopolysaccharide Receptors/genetics
- Lipopolysaccharide Receptors/metabolism
- Lipopolysaccharides/pharmacology
- Lymphocyte Antigen 96
- Membrane Glycoproteins/drug effects
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice
- Mice, Transgenic
- NF-kappa B/metabolism
- Osteocalcin/genetics
- Osteocalcin/metabolism
- Osteoclasts/drug effects
- Osteoclasts/metabolism
- Osteopontin
- Osteoprotegerin
- Porphyromonas gingivalis
- RANK Ligand
- RNA, Messenger/analysis
- Receptor Activator of Nuclear Factor-kappa B
- Receptors, Cell Surface/drug effects
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Receptors, Tumor Necrosis Factor
- Reverse Transcriptase Polymerase Chain Reaction
- Sialoglycoproteins/genetics
- Sialoglycoproteins/metabolism
- Toll-Like Receptor 4
- Toll-Like Receptors
- Up-Regulation/drug effects
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Affiliation(s)
- F H Nociti
- Department of Prosthodontics/Periodontics, Division of Periodontics, School of Dentistry at Piracicaba, University of Campinas, Brazil
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41
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Chen L, Chu C, Zhang YH, Zhu C, Kong X, Huang T, Cai YD. Analysis of Gene Expression Profiles in the Human Brain Stem, Cerebellum and Cerebral Cortex. PLoS One 2016; 11:e0159395. [PMID: 27434030 PMCID: PMC4951119 DOI: 10.1371/journal.pone.0159395] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 07/01/2016] [Indexed: 11/19/2022] Open
Abstract
The human brain is one of the most mysterious tissues in the body. Our knowledge of the human brain is limited due to the complexity of its structure and the microscopic nature of connections between brain regions and other tissues in the body. In this study, we analyzed the gene expression profiles of three brain regions-the brain stem, cerebellum and cerebral cortex-to identify genes that are differentially expressed among these different brain regions in humans and to obtain a list of robust, region-specific, differentially expressed genes by comparing the expression signatures from different individuals. Feature selection methods, specifically minimum redundancy maximum relevance and incremental feature selection, were employed to analyze the gene expression profiles. Sequential minimal optimization, a machine-learning algorithm, was employed to examine the utility of selected genes. We also performed a literature search, and we discuss the experimental evidence for the important physiological functions of several highly ranked genes, including NR2E1, DAO, and LRRC7, and we give our analyses on a gene (TFAP2B) that have not been investigated or experimentally validated. As a whole, the results of our study will improve our ability to predict and understand genes related to brain regionalization and function.
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Affiliation(s)
- Lei Chen
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
- College of Information Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Chen Chu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yu-Hang Zhang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Changming Zhu
- College of Information Engineering, Shanghai Maritime University, Shanghai, 201306, China
| | - Xiangyin Kong
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Tao Huang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
- * E-mail: (YDC); (TH)
| | - Yu-Dong Cai
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
- * E-mail: (YDC); (TH)
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Siemerink MJ, Hughes MR, Dallinga MG, Gora T, Cait J, Vogels IMC, Yetin-Arik B, Van Noorden CJF, Klaassen I, McNagny KM, Schlingemann RO. CD34 Promotes Pathological Epi-Retinal Neovascularization in a Mouse Model of Oxygen-Induced Retinopathy. PLoS One 2016; 11:e0157902. [PMID: 27352134 PMCID: PMC4924789 DOI: 10.1371/journal.pone.0157902] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 06/07/2016] [Indexed: 11/23/2022] Open
Abstract
The sialomucins CD34 and podocalyxin (PODXL) are anti-adhesive molecules expressed at the luminal membrane of endothelial cells of small blood vessels and facilitate vascular lumen formation in the developing mouse aorta. CD34 transcript and protein levels are increased during human angiogenesis, its expression is particularly enriched on endothelial tip cell filopodia and CD34 is a marker for tip cells in vitro. Here, we investigated whether CD34 merely marks endothelial tip cells or has a functional role in tip cells and angiogenesis. We assessed that silencing CD34 in human microvascular endothelial cells has little effect on endothelial cell migration or invasion, but has a significant effect on vascular-endothelial growth factor-induced angiogenic sprouting activity in vitro. In vivo, the absence of CD34 reduced the density of filopodia on retinal endothelial tip cells in neonatal mice, but did not influence the overall architecture of the retinal vascular network. In oxygen-induced retinopathy, Cd34-/- mice showed normal intra-retinal regenerative angiogenesis but the number of pathological epi-retinal neovascular tufts were reduced. We conclude that CD34 is not essential for developmental vascularization in the retina, but its expression promotes the formation of pathological, invasive vessels during neovascularization.
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Affiliation(s)
- Martin J. Siemerink
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Michael R. Hughes
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
- The Biomedical Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Marchien G. Dallinga
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Tomek Gora
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Jessica Cait
- The Biomedical Research Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Ilse M. C. Vogels
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Bahar Yetin-Arik
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Cornelis J. F. Van Noorden
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Ingeborg Klaassen
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Kelly M. McNagny
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
- The Biomedical Research Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Reinier O. Schlingemann
- Ocular Angiogenesis Group, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Ophthalmology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- Department of Cell Biology and Histology, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
- * E-mail:
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Giotopoulos G, Chan WI, Horton SJ, Ruau D, Gallipoli P, Fowler A, Crawley C, Papaemmanuil E, Campbell PJ, Göttgens B, Van Deursen JM, Cole PA, Huntly BJP. The epigenetic regulators CBP and p300 facilitate leukemogenesis and represent therapeutic targets in acute myeloid leukemia. Oncogene 2016; 35:279-89. [PMID: 25893291 PMCID: PMC4729186 DOI: 10.1038/onc.2015.92] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/27/2015] [Accepted: 02/05/2015] [Indexed: 01/07/2023]
Abstract
Growing evidence links abnormal epigenetic control to the development of hematological malignancies. Accordingly, inhibition of epigenetic regulators is emerging as a promising therapeutic strategy. The acetylation status of lysine residues in histone tails is one of a number of epigenetic post-translational modifications that alter DNA-templated processes, such as transcription, to facilitate malignant transformation. Although histone deacetylases are already being clinically targeted, the role of histone lysine acetyltransferases (KAT) in malignancy is less well characterized. We chose to study this question in the context of acute myeloid leukemia (AML), where, using in vitro and in vivo genetic ablation and knockdown experiments in murine models, we demonstrate a role for the epigenetic regulators CBP and p300 in the induction and maintenance of AML. Furthermore, using selective small molecule inhibitors of their lysine acetyltransferase activity, we validate CBP/p300 as therapeutic targets in vitro across a wide range of human AML subtypes. We proceed to show that growth retardation occurs through the induction of transcriptional changes that induce apoptosis and cell-cycle arrest in leukemia cells and finally demonstrate the efficacy of the KAT inhibitors in decreasing clonogenic growth of primary AML patient samples. Taken together, these data suggest that CBP/p300 are promising therapeutic targets across multiple subtypes in AML.
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Affiliation(s)
- G Giotopoulos
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
| | - W-I Chan
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
- State Key laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - SJ Horton
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
| | - D Ruau
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
| | - P Gallipoli
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
| | - A Fowler
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
| | - C Crawley
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
| | | | - PJ Campbell
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust Sanger Institute, Hinxton, UK
| | - B Göttgens
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
| | - JM Van Deursen
- Department of Pediatric and Adolescent Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - PA Cole
- Department of Pharmacology and Molecular sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - BJP Huntly
- Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK
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Ithuralde RE, Turjanski AG. Phosphorylation Regulates the Bound Structure of an Intrinsically Disordered Protein: The p53-TAZ2 Case. PLoS One 2016; 11:e0144284. [PMID: 26742101 PMCID: PMC4712144 DOI: 10.1371/journal.pone.0144284] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 11/15/2015] [Indexed: 12/20/2022] Open
Abstract
Disordered regions and Intrinsically Disordered Proteins (IDPs) are involved in critical cellular processes and may acquire a stable three-dimensional structure only upon binding to their partners. IDPs may follow a folding-after-binding process, known as induced folding, or a folding-before-binding process, known as conformational selection. The transcription factor p53 is involved in the regulation of cellular events that arise upon stress or DNA damage. The p53 domain structure is composed of an N-terminal transactivation domain (p53TAD), a DNA Binding Domain and a tetramerization domain. The activity of TAD is tightly regulated by interactions with cofactors, inhibitors and phosphorylation. To initiate transcription, p53TAD binds to the TAZ2 domain of CBP, a co-transcription factor, and undergoes a folding and binding process, as revealed by the recent NMR structure of the complex. The activity of p53 is regulated by phosphorylation at multiple sites on the TAD domain and recent studies have shown that modifications at three residues affect the binding towards TAZ2. However, we still do not know how these phosphorylations affect the structure of the bound state and, therefore, how they regulate the p53 function. In this work, we have used computational simulations to understand how phosphorylation affects the structure of the p53TAD:TAZ2 complex and regulates the recognition mechanism. Phosphorylation has been proposed to enhance binding by direct interaction with the folded protein or by changing the unbound conformation of IDPs, for example by pre-folding the protein favoring the recognition mechanism. Here, we show an interesting turn in the p53 case: phosphorylation mainly affects the bound structure of p53TAD, highlighting the complexity of IDP protein-protein interactions. Our results are in agreement with previous experimental studies, allowing a clear picture of how p53 is regulated by phosphorylation and giving new insights into how post-translational modifications can regulate the function of IDPs.
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Affiliation(s)
- Raúl Esteban Ithuralde
- Departamento de Química Inorgánica, Analítica y Química Física y Departamento de Química Biológica-Facultad de Ciencias Exacas y Naturales-Universidad de Buenos Aires, ciudad de Buenos Aires, Argentina
- INQUIMAE-Facultad de Ciencias Exactas y Naturales-Universidad de Buenos Aires/Consejo Nacional de Investigaciones Científicas y Técnicas-CONICET, ciudad de Buenos Aires, Argentina
| | - Adrián Gustavo Turjanski
- Departamento de Química Inorgánica, Analítica y Química Física y Departamento de Química Biológica-Facultad de Ciencias Exacas y Naturales-Universidad de Buenos Aires, ciudad de Buenos Aires, Argentina
- INQUIMAE-Facultad de Ciencias Exactas y Naturales-Universidad de Buenos Aires/Consejo Nacional de Investigaciones Científicas y Técnicas-CONICET, ciudad de Buenos Aires, Argentina
- * E-mail:
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45
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Lee Y, Chun SK, Kim K. Sumoylation controls CLOCK-BMAL1-mediated clock resetting via CBP recruitment in nuclear transcriptional foci. Biochim Biophys Acta 2015; 1853:2697-708. [PMID: 26164627 DOI: 10.1016/j.bbamcr.2015.07.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 06/24/2015] [Accepted: 07/07/2015] [Indexed: 12/25/2022]
Abstract
CLOCK-BMAL1 is a key transcription factor complex of the molecular clock system that generates circadian gene expression and physiology in mammals. Here, we demonstrate that sumoylation of BMAL1 mediates the rapid activation of CLOCK-BMAL1 by CREB-binding protein (CBP) in nuclear foci and also the resetting of the circadian clock. Under physiological conditions, a bimolecular fluorescence complementation-based fluorescence resonance energy transfer (BiFC-FRET) assay revealed that CLOCK-BMAL1 rapidly dimerized and formed a ternary complex with CBP in discrete nuclear foci in response to serum stimuli. We found that the formation of this ternary complex requires sumoylation of BMAL1 by SUMO3. These processes were abolished by both the ectopic expression of the SUMP2/3-specific protease, SUSP1, and mutation of the major sumoylation site (Lys259) of BMAL1. Moreover, molecular inhibition of BMAL1 sumoylation abrogated acute Per1 transcription and severely dampened the circadian gene oscillation triggered by clock synchronization stimuli. Taken together, these findings suggest that sumoylation plays a critical role in the spatiotemporal co-activation of CLOCK-BMAL1 by CBP for immediate-early Per induction and the resetting of the circadian clock.
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Affiliation(s)
- Yool Lee
- Department of Brain and Cognitive Sciences and School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea; Department of Pharmacology and the Institute for Translational Medicine and Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, United States
| | - Sung Kook Chun
- Department of Brain and Cognitive Sciences and School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea; Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 711-583, Republic of Korea
| | - Kyungjin Kim
- Department of Brain and Cognitive Sciences and School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea; Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 711-583, Republic of Korea.
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Davenport C, Mahmood WA, Forde H, Ashley DT, Agha A, McDermott J, Sreenan S, Thompson CJ, McGrath F, McAdam B, Cummins PM, Smith D. The effects of insulin and liraglutide on osteoprotegerin and vascular calcification in vitro and in patients with type 2 diabetes. Eur J Endocrinol 2015; 173:53-61. [PMID: 26036811 DOI: 10.1530/eje-14-1137] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Vascular calcification (VC) is inhibited by the glycoprotein osteoprotegerin (OPG). It is unclear whether treatments for type 2 diabetes are capable of promoting or inhibiting VC. The present study examined the effects of insulin and liraglutide on i) the production of OPG and ii) the emergence of VC, both in vitro in human aortic smooth muscle cells (HASMCs) and in vivo in type 2 diabetes. DESIGN/METHODS HASMCs were exposed to insulin glargine or liraglutide, after which OPG production, alkaline phosphatase (ALP) activity and levels of Runx2, ALP and bone sialoprotein (BSP) mRNA were measured. A prospective, nonrandomised human subject study was also conducted, in which OPG levels and coronary artery calcification (CAC) were measured in a type 2 diabetes population before and 16 months after the commencement of either insulin or liraglutide treatment and in a control group that took oral hypoglycemics only. RESULTS Exposure to insulin glargine, but not liraglutide, was associated with significantly decreased OPG production (11 913±1409 pg/10(4) cells vs 282±13 pg/10(4) cells, control vs 10 nmol/l insulin, P<0.0001), increased ALP activity (0.82±0.06 IU/10(4) cells vs 2.40±0.16 IU/10(4) cells, control vs 10 nmol/l insulin, P<0.0001) and increased osteogenic gene expression by HASMCs. In the clinical study (n=101), insulin treatment was associated with a significant reduction in OPG levels and, despite not achieving full statistical significance, a trend towards increased CAC in patients. CONCLUSION Exogenous insulin down-regulated OPG in vitro and in vivo and promoted VC in vitro. Although neither insulin nor liraglutide significantly affected CAC in the present pilot study, these data support the establishment of randomised trials to investigate medications and VC in diabetes.
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Affiliation(s)
- Colin Davenport
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Wan A Mahmood
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Hannah Forde
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - David T Ashley
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Amar Agha
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - John McDermott
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Seamus Sreenan
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Christopher J Thompson
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Frank McGrath
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Brendan McAdam
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Philip M Cummins
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
| | - Diarmuid Smith
- Department of Academic EndocrinologyDiabetes Day Centre, Beaumont Hospital, County Dublin, Dublin 9, IrelandDepartment of Diabetes and EndocrinologyConnolly Hospital, Blanchardstown, County Dublin, Dublin 9, IrelandDepartments of RadiologyCardiologyBeaumont Hospital, County Dublin, Dublin 9, IrelandSchool of BiotechnologyCentre for Preventive Medicine, Dublin City University, County Dublin, Dublin 9, Ireland
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47
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Ribeiro JMC, Schwarz A, Francischetti IMB. A Deep Insight Into the Sialotranscriptome of the Chagas Disease Vector, Panstrongylus megistus (Hemiptera: Heteroptera). J Med Entomol 2015; 52:351-358. [PMID: 26334808 PMCID: PMC4581482 DOI: 10.1093/jme/tjv023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 02/05/2015] [Indexed: 05/28/2023]
Abstract
Saliva of blood-sucking arthropods contains a complex cocktail of pharmacologically active compounds that assists feeding by counteracting their hosts' hemostatic and inflammatory reactions. Panstrongylus megistus (Burmeister) is an important vector of Chagas disease in South America, but despite its importance there is only one salivary protein sequence publicly deposited in GenBank. In the present work, we used Illumina technology to disclose and publicly deposit 3,703 coding sequences obtained from the assembly of >70 million reads. These sequences should assist proteomic experiments aimed at identifying pharmacologically active proteins and immunological markers of vector exposure. A supplemental file of the transcriptome and deducted protein sequences can be obtained from http://exon.niaid.nih.gov/transcriptome/P_megistus/Pmeg-web.xlsx.
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Affiliation(s)
- José M C Ribeiro
- National Institute of Allergy and Infectious Diseases, Laboratory of Malaria and Vector Research, 12735 Twinbrook Parkway, MD 20852.
| | - Alexandra Schwarz
- Institute of Parasitology, Biology Centre of the Academy of Sciences of Czech Republic, CZ-370 05 Ceske Budejovice, Czech Republic
| | - Ivo M B Francischetti
- National Institute of Allergy and Infectious Diseases, Laboratory of Malaria and Vector Research, 12735 Twinbrook Parkway, MD 20852
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Zhou Y, Zhang L, Pan H, Wang B, Yan F, Fang X, Munnee K, Tang Z. Bmi1 essentially mediates podocalyxin-enhanced Cisplatin chemoresistance in oral tongue squamous cell carcinoma. PLoS One 2015; 10:e0123208. [PMID: 25915207 PMCID: PMC4411128 DOI: 10.1371/journal.pone.0123208] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/01/2015] [Indexed: 11/24/2022] Open
Abstract
Oral tongue squamous cell carcinoma (OTSCC) is one of the most common head and neck cancers. Innate or acquired resistance to cisplatin, a standard chemotherapy agent for OTSCC, is common in patients with OTSCC. Understanding the molecular basis for cisplatin chemoresistance in OTSCC cells may serve as a basis for identification of novel therapeutic targets. Podocalyxin (PODXL) has been found critical for malignant progression in a variety of cancers. Bmi1 has recently been found to induce cell apoptosis and cisplatin chemosensitivity in OTSCC cells. In this study, we explored the interaction between PODXL and Bmi1 in OTSCC cells, and assessed its impact on OTSCC cell chemoresistance to cisplatin. PODXL and/or Bmi1 were stably overexpressed or knocked down in SCC-4 and Tca8113 human OTSCC cells. Overexpression of PODXL in both cell lines markedly elevated the expression level of Bmi1 and the half maximal inhibitory concentration (IC50) of cisplain and reduced cisplatin-induced cell apoptosis, which was abolished by knockdown of Bmi1 or a selective focal adhesion kinase (FAK) inhibitor. On the other hand, knockdown of PODXL significantly decreased the Bmi1 expression level and cisplatin IC50 and increased cisplatin-induced cell apoptosis, which was completely reversed by overexpression of Bmi1. While overexpression and knockdown of PODXL respectively increased and decreased the FAK activity, Bmi1 showed no significant effect on the FAK activity in OTSCC cells. In addition, overexpression of PODXL markedly elevated the stability of Bmi1 mRNA, which was abolished by a selective FAK inhibitor. In conclusion, this study provides the first evidence that PODXL up-regulates the expression level of Bmi1 in OTSCC cells by increasing the stability of Bmi1 mRNA through a FAK-dependent mechanism; this effect leads to enhanced cisplatin chemoresistance in OTSCC cells. This study adds new insights into the molecular mechanisms underlying OTSCC chemoresistance.
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Affiliation(s)
- Yueying Zhou
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Leiyi Zhang
- Department of Minimal Invasive Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hao Pan
- Department of Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - Baisheng Wang
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Fei Yan
- Department of Prosthodontics, Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - Xiaodan Fang
- Department of Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - Krishna Munnee
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhangui Tang
- Department of Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, China
- * E-mail:
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Sharma R, Beer K, Iwanov K, Schmöhl F, Beckmann PI, Schröder R. The single fgf receptor gene in the beetle Tribolium castaneum codes for two isoforms that integrate FGF8- and Branchless-dependent signals. Dev Biol 2015; 402:264-75. [PMID: 25864412 DOI: 10.1016/j.ydbio.2015.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/31/2015] [Accepted: 04/01/2015] [Indexed: 11/16/2022]
Abstract
The precise regulation of cell-cell communication by numerous signal-transduction pathways is fundamental for many different processes during embryonic development. One important signalling pathway is the evolutionary conserved fibroblast-growth-factor (FGF)-pathway that controls processes like cell migration, axis specification and mesoderm formation in vertebrate and invertebrate animals. In the model insect Drosophila, the FGF ligand / receptor combinations of FGF8 (Pyramus and Thisbe) / Heartless (Htl) and Branchless (Bnl) / Breathless (Btl) are required for the migration of mesodermal cells and for the formation of the tracheal network respectively with both the receptors functioning independently of each other. However, only a single fgf-receptor gene (Tc-fgfr) has been identified in the genome of the beetle Tribolium. We therefore asked whether both the ligands Fgf8 and Bnl could transduce their signal through a common FGF-receptor in Tribolium. Indeed, we found that the function of the single Tc-fgfr gene is essential for mesoderm differentiation as well as for the formation of the tracheal network during early development. Ligand specific RNAi for Tc-fgf8 and Tc-bnl resulted in two distinct non-overlapping phenotypes of impaired mesoderm differentiation and abnormal formation of the tracheal network in Tc-fgf8- and Tc-bnl(RNAi) embryos respectively. We further show that the single Tc-fgfr gene encodes at least two different receptor isoforms that are generated through alternative splicing. We in addition demonstrate through exon-specific RNAi their distinct tissue-specific functions. Finally, we discuss the structure of the fgf-receptor gene from an evolutionary perspective.
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Affiliation(s)
- Rahul Sharma
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany
| | - Katharina Beer
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany
| | - Katharina Iwanov
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany
| | - Felix Schmöhl
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany
| | - Paula Indigo Beckmann
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany
| | - Reinhard Schröder
- University of Rostock, Biological Sciences, Department of Genetics, Albert-Einsteinstr. 3, 18059 Rostock, Germany.
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Ishimoto K, Hayano S, Yanagita T, Kurosaka H, Kawanabe N, Itoh S, Ono M, Kuboki T, Kamioka H, Yamashiro T. Topical application of lithium chloride on the pulp induces dentin regeneration. PLoS One 2015; 10:e0121938. [PMID: 25812134 PMCID: PMC4374937 DOI: 10.1371/journal.pone.0121938] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/06/2015] [Indexed: 12/23/2022] Open
Abstract
We herein describe a novel procedure for dentin regeneration that mimics the biological processes of tooth development in nature. The canonical Wnt signaling pathway is an important regulator of the Dentin sialophosphoprotein (Dspp) expression. Our approach mimics the biological processes underlying tooth development in nature and focuses on the activation of canonical Wnt signaling to trigger the natural process of dentinogenesis. The coronal portion of the dentin and the underlying pulp was removed from the first molars. We applied lithium chloride (LiCl), an activator of canonical Wnt signaling, on the amputated pulp surface to achieve transdifferentiation toward odontoblasts from the surrounding pulpal cells. MicroCT and microscopic analyses demonstrated that the topical application of LiCl induced dentin repair, including the formation of a complete dentin bridge. LiCl-induced dentin is a tubular dentin in which the pulp cells are not embedded within the matrix, as in primary dentin. In contrast, a dentin bridge was not induced in the control group treated with pulp capping with material carriers alone, although osteodentin without tubular formation was induced at a comparatively deeper position from the pulp exposure site. We also evaluated the influence of LiCl on differentiation toward odontoblasts in vitro. In the mDP odontoblast cell line, LiCl activated the mRNA expression of Dspp, Axin2 and Kallikrein 4 (Klk4) and downregulated the Osteopontin (Osp) expression. These results provide a scientific basis for the biomimetic regeneration of dentin using LiCl as a new capping material to activate dentine regeneration.
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Affiliation(s)
- Kazuya Ishimoto
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Satoru Hayano
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takeshi Yanagita
- Department of Orthodontics, Okayama University Hospital, Okayama, Japan
| | - Hiroshi Kurosaka
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Noriaki Kawanabe
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Shinsuke Itoh
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Mitsuaki Ono
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Hiroshi Kamioka
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takashi Yamashiro
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
- * E-mail:
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