1
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Xu Z, Feng Y, Yan Y, Jin H, Chen Y, Han Y, Huang S, Feng F, Fu H, Yin Y, Huang Y, Wang H, Cheng W. HHEX suppresses advanced thyroid cancer by interacting with TLE3. Mol Cell Endocrinol 2023; 574:111988. [PMID: 37302518 DOI: 10.1016/j.mce.2023.111988] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/13/2023]
Abstract
Haematopoietically Expressed Homeobox (HHEX) gene is highly expressed in the thyroid gland and plays critical roles in the development and differentiation of the thyroid gland. While it has been indicated to be downregulated in thyroid cancer, its function and the underlying mechanism remain unclear. Herein, we observed low expression and aberrant cytoplasmic localization of HHEX in thyroid cancer cell lines. Knockdown of HHEX significantly enhanced cell proliferation, migration and invasion, while overexpression of HHEX showed the opposite effects in vitro and in vivo. These data provide evidence that HHEX is a tumor suppressor in thyroid cancer. Additionally, our results showed that HHEX overexpression upregulated the expression of sodium iodine symporter (NIS) mRNA and also enhanced NIS promoter activity, suggesting a favorable effect of HHEX in promoting thyroid cancer differentiation. Mechanistically, HHEX exerted a regulatory effect on the expression of transducin-like enhancer of split 3 (TLE3) protein, which inhibited the Wnt/β-catenin signaling pathway. Nuclear localized HHEX bound to and upregulated TLE3 expression by preventing TLE3 protein from being distributed to the cytoplasm and being ubiquitinated. In conclusion, our study suggested that restoring HHEX expression has the potential to be a new strategy in the treatment of advanced thyroid cancer.
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Affiliation(s)
- Zhongyun Xu
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yiyuan Feng
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yeqing Yan
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Hongfu Jin
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yuanyuan Chen
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yali Han
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, PR China; Shanghai Center of Thyroid Diseases, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - Shuo Huang
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Fang Feng
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Hongliang Fu
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yafu Yin
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China
| | - Yueye Huang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, PR China; Shanghai Center of Thyroid Diseases, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, PR China.
| | - Hui Wang
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China.
| | - Weiwei Cheng
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China; Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, PR China.
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2
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Jackson JT, Nutt SL, McCormack MP. The Haematopoietically-expressed homeobox transcription factor: roles in development, physiology and disease. Front Immunol 2023; 14:1197490. [PMID: 37398663 PMCID: PMC10313424 DOI: 10.3389/fimmu.2023.1197490] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023] Open
Abstract
The Haematopoietically expressed homeobox transcription factor (Hhex) is a transcriptional repressor that is of fundamental importance across species, as evident by its evolutionary conservation spanning fish, amphibians, birds, mice and humans. Indeed, Hhex maintains its vital functions throughout the lifespan of the organism, beginning in the oocyte, through fundamental stages of embryogenesis in the foregut endoderm. The endodermal development driven by Hhex gives rise to endocrine organs such as the pancreas in a process which is likely linked to its role as a risk factor in diabetes and pancreatic disorders. Hhex is also required for the normal development of the bile duct and liver, the latter also importantly being the initial site of haematopoiesis. These haematopoietic origins are governed by Hhex, leading to its crucial later roles in definitive haematopoietic stem cell (HSC) self-renewal, lymphopoiesis and haematological malignancy. Hhex is also necessary for the developing forebrain and thyroid gland, with this reliance on Hhex evident in its role in endocrine disorders later in life including a potential role in Alzheimer's disease. Thus, the roles of Hhex in embryological development throughout evolution appear to be linked to its later roles in a variety of disease processes.
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Affiliation(s)
- Jacob T. Jackson
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Stephen L. Nutt
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Matthew P. McCormack
- The Australian Centre for Blood Diseases, Monash University, Melbourne, VIC, Australia
- iCamuno Biotherapeutics, Melbourne, VIC, Australia
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3
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Demos C, Johnson J, Andueza A, Park C, Kim Y, Villa-Roel N, Kang DW, Kumar S, Jo H. Sox13 is a novel flow-sensitive transcription factor that prevents inflammation by repressing chemokine expression in endothelial cells. Front Cardiovasc Med 2022; 9:979745. [PMID: 36247423 PMCID: PMC9561411 DOI: 10.3389/fcvm.2022.979745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Atherosclerosis is a chronic inflammatory disease and occurs preferentially in arterial regions exposed to disturbed blood flow (d-flow) while the stable flow (s-flow) regions are spared. D-flow induces endothelial inflammation and atherosclerosis by regulating endothelial gene expression partly through the flow-sensitive transcription factors (FSTFs). Most FSTFs, including the well-known Kruppel-like factors KLF2 and KLF4, have been identified from in vitro studies using cultured endothelial cells (ECs). Since many flow-sensitive genes and pathways are lost or dysregulated in ECs during culture, we hypothesized that many important FSTFs in ECs in vivo have not been identified. We tested the hypothesis by analyzing our recent gene array and single-cell RNA sequencing (scRNAseq) and chromatin accessibility sequencing (scATACseq) datasets generated using the mouse partial carotid ligation model. From the analyses, we identified 30 FSTFs, including the expected KLF2/4 and novel FSTFs. They were further validated in mouse arteries in vivo and cultured human aortic ECs (HAECs). These results revealed 8 FSTFs, SOX4, SOX13, SIX2, ZBTB46, CEBPβ, NFIL3, KLF2, and KLF4, that are conserved in mice and humans in vivo and in vitro. We selected SOX13 for further studies because of its robust flow-sensitive regulation, preferential expression in ECs, and unknown flow-dependent function. We found that siRNA-mediated knockdown of SOX13 increased endothelial inflammatory responses even under the unidirectional laminar shear stress (ULS, mimicking s-flow) condition. To understand the underlying mechanisms, we conducted an RNAseq study in HAECs treated with SOX13 siRNA under shear conditions (ULS vs. oscillatory shear mimicking d-flow). We found 94 downregulated and 40 upregulated genes that changed in a shear- and SOX13-dependent manner. Several cytokines, including CXCL10 and CCL5, were the most strongly upregulated genes in HAECs treated with SOX13 siRNA. The robust induction of CXCL10 and CCL5 was further validated by qPCR and ELISA in HAECs. Moreover, the treatment of HAECs with Met-CCL5, a specific CCL5 receptor antagonist, prevented the endothelial inflammation responses induced by siSOX13. In addition, SOX13 overexpression prevented the endothelial inflammation responses. In summary, SOX13 is a novel conserved FSTF, which represses the expression of pro-inflammatory chemokines in ECs under s-flow. Reduction of endothelial SOX13 triggers chemokine expression and inflammatory responses, a major proatherogenic pathway.
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Affiliation(s)
- Catherine Demos
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Janie Johnson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Aitor Andueza
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Christian Park
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Yerin Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Nicolas Villa-Roel
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Dong-Won Kang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University, Atlanta, GA, United States
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, United States
- *Correspondence: Hanjoong Jo,
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4
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Guo Y, Zhu Z, Huang Z, Cui L, Yu W, Hong W, Zhou Z, Du P, Liu CY. CK2-induced cooperation of HHEX with the YAP-TEAD4 complex promotes colorectal tumorigenesis. Nat Commun 2022; 13:4995. [PMID: 36008411 PMCID: PMC9411202 DOI: 10.1038/s41467-022-32674-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/11/2022] [Indexed: 11/23/2022] Open
Abstract
Dysregulation of Hippo pathway leads to hyperactivation of YAP-TEAD transcriptional complex in various cancers, including colorectal cancer (CRC). In this study, we observed that HHEX (Hematopoietically expressed homeobox) may enhance transcription activity of the YAP-TEAD complex. HHEX associates with and stabilizes the YAP-TEAD complex on the regulatory genomic loci to coregulate the expression of a group of YAP/TEAD target genes. Also, HHEX may indirectly regulate these target genes by controlling YAP/TAZ expression. Importantly, HHEX is required for the pro-tumorigenic effects of YAP during CRC progression. In response to serum stimulation, CK2 (Casein Kinase 2) phosphorylates HHEX and enhances its interaction with TEAD4. A CK2 inhibitor CX-4945 diminishes the interaction between HHEX and TEAD4, leading to decreased expression of YAP/TEAD target genes. CX-4945 synergizes the antitumor activity of YAP-TEAD inhibitors verteporfin and Super-TDU. Elevated expression of HHEX is correlated with hyperactivation of YAP/TEAD and associated with poor prognosis of CRC patients. Overall, our study identifies HHEX as a positive modulator of YAP/TEAD to promote colorectal tumorigenesis, providing a new therapeutic strategy for targeting YAP/TEAD in CRC. Hippo signalling is often deregulated in cancers. Here the authors show that CK2 enhances the cooperation of HHEX with YAP-TEAD complex to promote colorectal tumorigenesis.
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Affiliation(s)
- Yuegui Guo
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China
| | - Zhehui Zhu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China.,State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200438, China
| | - Zhenyu Huang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China
| | - Long Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China
| | - Wei Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200438, China
| | - Wanjin Hong
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61, Biopolis Drive, Proteos, Singapore, 138673, Singapore
| | - Zhaocai Zhou
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200438, China.
| | - Peng Du
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China. .,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China.
| | - Chen-Ying Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China. .,Shanghai Colorectal Cancer Research Center, Shanghai, 200092, China.
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5
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Jin X, Shao X, Pang W, Wang Z, Huang J. Sex-determining Region Y-box transcription factor 13 promotes breast cancer cell proliferation and glycolysis by activating the tripartite motif containing 11-mediated Wnt/β-catenin signaling pathway. Bioengineered 2022; 13:13033-13044. [PMID: 35611828 PMCID: PMC9276007 DOI: 10.1080/21655979.2022.2073127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Breast cancer is the most frequent cancer among women and the second highest mortality in female across the world. Recent studies have illustrated that sex-determining region Y (SRY)-box protein (SOX) family plays essential roles in regulating various cancers. Nevertheless, the detailed effects of SOX13 on breast cancer are still uncovered. In our present study, SOX13 protein level was measured by using western blot assay in tissues and cells, and the results showed that SOX13 was upregulated in breast cancer tissues and cells compared with normal samples. Moreover, silencing SOX13 inhibited breast cancer cell viability, arrested cell cycle at G1/S phase and suppressed glycolysis, while overexpression of SOX13 reversed these events. Additionally, SOX13 knockdown reduced the level of proteins related to Wnt/β-catenin signaling pathway, whereas overexpression of tripartite motif containing 11 (TRM11) efficiently attenuated the effects, indicating that SOX13 controlled Wnt/β-catenin pathway depending on TRIM11. Furthermore, the data gained from xenograft tumor model illustrated that silencing SOX13 suppressed the tumor growth in nude mice and the glycolysis of tissues. In conclusion, our investigation illustrated that SOX13 facilitated breast cancer cell proliferation and glycolysis by modulating Wnt/β-catenin signaling pathway affected via TRIM11.
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Affiliation(s)
- Xiaoyan Jin
- Department of Breast Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Department of Breast Surgery, Taizhou Municipal Hospital, Taizhou, Zhejiang Province, China
| | - Xuan Shao
- Department of Breast Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Wenyang Pang
- Department of Breast Surgery, Taizhou Municipal Hospital, Taizhou, Zhejiang Province, China
| | - Zhengyi Wang
- Department of Breast Surgery, Taizhou Municipal Hospital, Taizhou, Zhejiang Province, China
| | - Jian Huang
- Department of Breast Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
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6
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Loscalzo G, Scheel J, Ibañez-Cabellos JS, García-Lopez E, Gupta S, García-Gimenez JL, Mena-Mollá S, Perales-Marín A, Morales-Roselló J. Overexpression of microRNAs miR-25-3p, miR-185-5p and miR-132-3p in Late Onset Fetal Growth Restriction, Validation of Results and Study of the Biochemical Pathways Involved. Int J Mol Sci 2021; 23:ijms23010293. [PMID: 35008715 PMCID: PMC8745308 DOI: 10.3390/ijms23010293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 11/27/2022] Open
Abstract
In a prospective study, 48 fetuses were evaluated with Doppler ultrasound after 34 weeks and classified, according to the cerebroplacental ratio (CPR) and estimated fetal weight (EFW), into fetuses with normal growth and fetuses with late-onset fetal growth restriction (LO-FGR). Overexpression of miRNAs from neonatal cord blood belonging to LO-FGR fetuses, was validated by real-time PCR. In addition, functional characterization of overexpressed miRNAs was performed by analyzing overrepresented pathways, gene ontologies, and prioritization of synergistically working miRNAs. Three miRNAs: miR-25-3p, miR-185-5p and miR-132-3p, were significantly overexpressed in cord blood of LO-FGR fetuses. Pathway and gene ontology analysis revealed over-representation of certain molecular pathways associated with cardiac development and neuron death. In addition, prioritization of synergistically working miRNAs highlighted the importance of miR-185-5p and miR-25-3p in cholesterol efflux and starvation responses associated with LO-FGR phenotypes. Evaluation of miR-25-3p; miR-132-3p and miR-185-5p might serve as molecular biomarkers for the diagnosis and management of LO-FGR; improving the understanding of its influence on adult disease.
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Affiliation(s)
- Gabriela Loscalzo
- Instituto de Investigación Sanitaria La Fe, 46026 Valencia, Spain; (A.P.-M.); (J.M.-R.)
- Department of Obstetrics and Gynecology, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
- Correspondence: (G.L.); (J.S.)
| | - Julia Scheel
- Department of Systems Biology and Bioinformatics, University Rostock, 18055 Rostock, Germany;
- Correspondence: (G.L.); (J.S.)
| | - José Santiago Ibañez-Cabellos
- EpiDisease S.L, Parc Científic, University of Valencia, 46980 Paterna, Spain; (J.S.I.-C.); (E.G.-L.); (J.L.G.-G.); (S.M.-M.)
- Consortium Center for Biomedical Network Research on Rare Diseases (CIBERER), Carrer d’Alvaro de Bazan, 10, 46010 Valencia, Spain
| | - Eva García-Lopez
- EpiDisease S.L, Parc Científic, University of Valencia, 46980 Paterna, Spain; (J.S.I.-C.); (E.G.-L.); (J.L.G.-G.); (S.M.-M.)
| | - Shailendra Gupta
- Department of Systems Biology and Bioinformatics, University Rostock, 18055 Rostock, Germany;
| | - José Luis García-Gimenez
- EpiDisease S.L, Parc Científic, University of Valencia, 46980 Paterna, Spain; (J.S.I.-C.); (E.G.-L.); (J.L.G.-G.); (S.M.-M.)
- Consortium Center for Biomedical Network Research on Rare Diseases (CIBERER), Carrer d’Alvaro de Bazan, 10, 46010 Valencia, Spain
- Institute of Health Carlos III, Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Department of Physiology, School of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Salvador Mena-Mollá
- EpiDisease S.L, Parc Científic, University of Valencia, 46980 Paterna, Spain; (J.S.I.-C.); (E.G.-L.); (J.L.G.-G.); (S.M.-M.)
- Institute of Health Carlos III, Biomedical Research Institute INCLIVA, 46010 Valencia, Spain
- Department of Physiology, School of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Alfredo Perales-Marín
- Instituto de Investigación Sanitaria La Fe, 46026 Valencia, Spain; (A.P.-M.); (J.M.-R.)
- Department of Obstetrics and Gynecology, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - José Morales-Roselló
- Instituto de Investigación Sanitaria La Fe, 46026 Valencia, Spain; (A.P.-M.); (J.M.-R.)
- Department of Obstetrics and Gynecology, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
- Department of Pediatrics, Obstetrics and Gynecology, School of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
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7
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Identification of Estrogen Signaling in a Prioritization Study of Intraocular Pressure-Associated Genes. Int J Mol Sci 2021; 22:ijms221910288. [PMID: 34638643 PMCID: PMC8508848 DOI: 10.3390/ijms221910288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022] Open
Abstract
Elevated intraocular pressure (IOP) is the only modifiable risk factor for primary open-angle glaucoma (POAG). Herein we sought to prioritize a set of previously identified IOP-associated genes using novel and previously published datasets. We identified several genes for future study, including several involved in cytoskeletal/extracellular matrix reorganization, cell adhesion, angiogenesis, and TGF-β signaling. Our differential correlation analysis of IOP-associated genes identified 295 pairs of 201 genes with differential correlation. Pathway analysis identified β-estradiol as the top upstream regulator of these genes with ESR1 mediating 25 interactions. Several genes (i.e., EFEMP1, FOXC1, and SPTBN1) regulated by β-estradiol/ESR1 were highly expressed in non-glaucomatous human trabecular meshwork (TM) or Schlemm’s canal (SC) cells and specifically expressed in TM/SC cell clusters defined by single-cell RNA-sequencing. We confirmed ESR1 gene and protein expression in human TM cells and TM/SC tissue with quantitative real-time PCR and immunofluorescence, respectively. 17β-estradiol was identified in bovine, porcine, and human aqueous humor (AH) using ELISA. In conclusion, we have identified estrogen receptor signaling as a key modulator of several IOP-associated genes. The expression of ESR1 and these IOP-associated genes in TM/SC tissue and the presence of 17β-estradiol in AH supports a role for estrogen signaling in IOP regulation.
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8
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Cannarella R, Salemi M, Condorelli RA, Cimino L, Giurato G, Marchese G, Cordella A, Romano C, La Vignera S, Calogero AE. SOX13 gene downregulation in peripheral blood mononuclear cells of patients with Klinefelter syndrome. Asian J Androl 2021; 23:157-162. [PMID: 33109779 PMCID: PMC7991811 DOI: 10.4103/aja.aja_37_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Klinefelter syndrome (KS) is the most common sex chromosome disorder in men. It is characterized by germ cell loss and other variable clinical features, including autoimmunity. The sex-determining region of Y (SRY)-box 13 (Sox13) gene is expressed in mouse spermatogonia. In addition, it has been identified as islet cell autoantigen 12 (ICA12), which is involved in the pathogenesis of autoimmune diseases, including type 1 diabetes mellitus (DM) and primary biliary cirrhosis. Sox13 expression has never been investigated in patients with KS. In this age-matched, case-control study performed on ten patients with KS and ten controls, we found that SOX13 is significantly downregulated in peripheral blood mononuclear cells of patients with KS compared to controls. This finding might be consistent with the germ cell loss typical of patients with KS. However, the role of Sox13 in the pathogenesis of germ cell loss and humoral autoimmunity in patients with KS deserves to be further explored.
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Affiliation(s)
- Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
| | | | - Rosita A Condorelli
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
| | - Laura Cimino
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
| | - Giorgio Giurato
- Genomix4Life Srl, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana," University of Salerno, Baronissi (SA) 84081, Italy
| | - Giovanna Marchese
- Genomix4Life Srl, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana," University of Salerno, Baronissi (SA) 84081, Italy
| | - Angela Cordella
- Genomix4Life Srl, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana," University of Salerno, Baronissi (SA) 84081, Italy
| | - Corrado Romano
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
| | - Aldo E Calogero
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Italy
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9
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Zhang K, Zhao Q, Li Z, Fu F, Zhang H, Fu J, Zheng M, Zhang S. Clinicopathological Significances of Cancer Stem Cell-Associated HHEX Expression in Breast Cancer. Front Cell Dev Biol 2020; 8:605744. [PMID: 33425911 PMCID: PMC7785851 DOI: 10.3389/fcell.2020.605744] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022] Open
Abstract
Aberrant expression of the transcription factor hematopoietic ally expressed homeobox/proline-rich homeodomain (HHEX/PRH) is implicated in numerous cancers. However, the association of HHEX with breast cancer (BC) remains unclear. In this study, HHEX mRNA and protein expression were analyzed using the Oncomine, UALCAN, GEPIA, TCGAportal, and HPA databases. We evaluated the effect of HHEX on clinicopathological parameters using Kaplan–Meier plotter, OncoLnc, TCGAportal, PROGgeneV2, and BC-GenExMiner. Western blotting was performed to compare the level of HHEX in breast samples of Tientsin Albino 2 mice, human breast precancerous lesions, benign breast tumors, and BC. The correlation between HHEX and cancer stem cells was investigated using the GEO (GSE52327 and GSE94865) and GEPIA datasets. Networks between HHEX and survival-related gene marker sets and microRNAs were analyzed using GEPIA, StarBase, and Cytoscape. Results of this study showed that HHEX expression in BC was significantly lower than those in breast precancerous lesions and benign breast tumors at both mRNA and protein levels. BC patients with lower HHEX expression had significantly worse overall survival and disease-free survival. Moreover, HHEX significantly affected the clinicopathology of BC. Specifically, low HHEX expression was correlated with the following groups of patients: age ≤51 years, ER-negative or PR-negative patients, HER-2 positive, triple-negative breast cancer, and basal-like BC. Immunohistochemical analysis of the breast samples showed significant differences of HHEX staining index (P < 0.001) among the three groups. To further investigate the mechanism, we determined the intersection of differentially expressed genes related to BC stem cells and those genes after HHEX expression was altered. This led to the identification of four potentially regulated genes-CXL12, BLNK, PAG1, and LPXN. Using StarBase and km-plotter, the negative regulation of HHEX expression and survival trends, including miR-130b, miR-30e, and miR-301b were joined into miRNA-HHEX-mRNA potential regulatory network. The abilities of proliferation, migration and invasion increased in MDA-MB-231 and BT-549 breast cancer cell lines after HHEX down expression and decreased after HHEX overexpression compared them in the control cells. In conclusion, these data suggest that HHEX expression is downregulated in BC and HHEX may regulate the development of BC through the stem cell-related genes.
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Affiliation(s)
- Kexin Zhang
- Nankai University School of Medicine, Nankai University, Tianjin, China.,Department of Pathology, Tianjin Union Medical Center, Tianjin, China
| | - Qi Zhao
- Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Zugui Li
- Department of Pathology, Tianjin Union Medical Center, Tianjin, China.,Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Fangmei Fu
- Department of Pathology, Tianjin Union Medical Center, Tianjin, China.,Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hao Zhang
- Department of Pathology, Tianjin Union Medical Center, Tianjin, China.,Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Junjie Fu
- Department of Pathology, Tianjin Union Medical Center, Tianjin, China
| | - Minying Zheng
- Nankai University School of Medicine, Nankai University, Tianjin, China.,Department of Pathology, Tianjin Union Medical Center, Tianjin, China
| | - Shiwu Zhang
- Nankai University School of Medicine, Nankai University, Tianjin, China.,Department of Pathology, Tianjin Union Medical Center, Tianjin, China
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10
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Feng M, Fang F, Fang T, Jiao H, You S, Wang X, Zhao W. Sox13 promotes hepatocellular carcinoma metastasis by transcriptionally activating Twist1. J Transl Med 2020; 100:1400-1410. [PMID: 32461589 DOI: 10.1038/s41374-020-0445-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/14/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
SRY (sex-determining region Y)-box 13 (Sox13), a member of group D of the SRY-related high mobility group (HMG) box (Sox) family, is a critical regulator of embryonic development and cartilage formation. Few studies have investigated the role of Sox13 in tumorigenesis. The present study reveals the clinical significance and biological function of Sox13 in hepatocellular carcinoma (HCC). First, the expression of Sox13 in HCC samples was evaluated by qRT-PCR and western blotting, and its association with clinicopathological features and prognosis was determined. We found that Sox13 expression was higher in tumor tissue than in paired nontumor tissue. The upregulation of Sox13 was associated with poor differentiation, metastasis, recurrence and poor overall, and tumor-free survival of HCC patients. The function of Sox13 on HCC cell migration and invasion was then assessed by Transwell assay, and the results demonstrated that Sox13 promoted HCC cell invasion, migration, and epithelial-to-mesenchymal transition (EMT). Notably, the invasion, migration, and EMT of HCC cells induced by Sox13 overexpression could be abolished by Twist1 depletion, and Sox13 was positively correlated with Twist1 at both the mRNA and protein levels. Mechanistically, we revealed that Sox13 activated Twist1 transcription and consequently upregulated Twist1 expression. Furthermore, Sox13 formed a heterodimer with Sox5, and this heterodimer functionally cooperated to enhance the transcriptional activity of Twist1. Our findings suggest that Sox13 serves as an oncogene in HCC, and might be a novel prognostic and therapeutic candidate.
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Affiliation(s)
- Min Feng
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China
| | - Fei Fang
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China
| | - Ting Fang
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China
| | - Hui Jiao
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China
| | - Song You
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China
| | - Xiaomin Wang
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China.
| | - Wenxiu Zhao
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Building 6, No. 209, South Hubin Road, 361004, Xiamen, China.
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11
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Bie LY, Li N, Deng WY, Lu XY, Guo P, Luo SX. Evaluation of PAX8 expression promotes the proliferation of stomach Cancer cells. BMC Mol Cell Biol 2019; 20:61. [PMID: 31881968 PMCID: PMC6935224 DOI: 10.1186/s12860-019-0245-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 12/20/2019] [Indexed: 11/21/2022] Open
Abstract
Background PAX8 was not only a mitotic factor, but identified as a transcription factor involved in the prognosis of human tumor patients. Elucidating the function of PAX8 on the pathology of stomach cancer was meaningful. Results PAX8 was found to be upregulated in primary stomach cancer tissue and the TCGA stomach cancer dataset. Interestingly, SOX13 and PAX8 showed consistent expression patterns, and the combined high PAX8 and SOX18 expression induced a worse prognosis of stomach cancer patients. SOX13 was further identified as a transcription factor of PAX8, and further affect Aurora B and Cyclin B1 expression, two cell cycle related factors of the downstream of PAX8, including. Furthermore, PAX8 depletion inducted G1-phase arrest and the decrease of EdU incorporation, cell viability and colony formation can be rescued by SOX13 overexpression. Conclusions SOX13 participated in the elevated expression of PAX8, which promote the proliferation of stomach cancer cells. Therefore, SOX13 mediated PAX8 expression was recognized as a tumor-promoting role in stomach cancer.
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Affiliation(s)
- Liang-Yu Bie
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital, Zhengzhou, NO. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Ning Li
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital, Zhengzhou, NO. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Wen-Ying Deng
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital, Zhengzhou, NO. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China
| | - Xiao-Yu Lu
- Department of Pathology, Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital, Zhengzhou, 450008, Henan, China
| | - Ping Guo
- Department of Oncology, the First Affiliated Hospital of Nanyang Medical College, Nanyang, 473061, Henan, China
| | - Su-Xia Luo
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital, Zhengzhou, NO. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, China.
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12
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Bie LY, Li D, Wei Y, Li N, Chen XB, Luo SX. SOX13 dependent PAX8 expression promotes the proliferation of gastric carcinoma cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:3180-3187. [PMID: 31353958 DOI: 10.1080/21691401.2019.1646751] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PAX8 is identified as a regulator in the pathogenesis of human tumours and an indicator of the prognosis for patients. However, the role of PAX8 on proliferation in gastric cancer have not been studied. This study was aimed to explore the expression pattern of PAX8 in gastric cancer, and investigate the effect of PAX8 on the proliferation of gastric cancer cells. PAX8 and SOX13 were identified to be synchronously up-regulated in primary gastric cancer in human gastric cancer tissues and the gastric cancer datasets of TCGA, and gastric cancer patients of combined high PAX8 and SOX13 expression showed poor prognosis. Furthermore, SOX13 can mediate PAX8 and its targeted genes, Aurora B and Cyclin B1, expression in AGS and MGC803 cell lines. Flow cytometry and EdU incorporation assays showed that silencing PAX8 can block the cell cycle of gastric cancer cell in G1 phase and SOX13 expression can rescue the arrested proliferative process induced by PAX8 silenced in CCK8 and colony formation assays. Thus, combined SOX13 and PAX8 expression regulate the proliferation of gastric cancer cells, and both SOX13 and PAX8 play an oncogene function in gastric cancer.
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Affiliation(s)
- Liang-Yu Bie
- a Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) , Zhengzhou , China
| | - Dan Li
- b Department of General Surgery, Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) , Zhengzhou , China
| | - Yan Wei
- c Department of Pathology, Nanyang Medical College , Nanyang , China
| | - Ning Li
- a Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) , Zhengzhou , China
| | - Xiao-Bing Chen
- a Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) , Zhengzhou , China
| | - Su-Xia Luo
- a Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) , Zhengzhou , China
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13
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Kitchen P, Lee KY, Clark D, Lau N, Lertsuwan J, Sawasdichai A, Satayavivad J, Oltean S, Afford S, Gaston K, Jayaraman PS. A Runaway PRH/HHEX-Notch3-Positive Feedback Loop Drives Cholangiocarcinoma and Determines Response to CDK4/6 Inhibition. Cancer Res 2019; 80:757-770. [PMID: 31843982 DOI: 10.1158/0008-5472.can-19-0942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 10/16/2019] [Accepted: 12/10/2019] [Indexed: 12/21/2022]
Abstract
Aberrant Notch and Wnt signaling are known drivers of cholangiocarcinoma (CCA), but the underlying factors that initiate and maintain these pathways are not known. Here, we show that the proline-rich homeodomain protein/hematopoietically expressed homeobox (PRH/HHEX) transcription factor forms a positive transcriptional feedback loop with Notch3 that is critical in CCA. PRH/HHEX expression is elevated in CCA, and depletion of PRH reduces CCA tumor growth in a xenograft model. Overexpression of PRH in primary human biliary epithelial cells is sufficient to increase cell proliferation and produce an invasive phenotype. Interrogation of the gene networks regulated by PRH and Notch3 reveals that unlike Notch3, PRH directly activates canonical Wnt signaling. These data indicate that hyperactivation of Notch and Wnt signaling is independent of the underlying mutational landscape and has a common origin in dysregulation of PRH. Moreover, they suggest new therapeutic options based on the dependence of specific Wnt, Notch, and CDK4/6 inhibitors on PRH activity. SIGNIFICANCE: The PRH/HHEX transcription factor is an oncogenic driver in cholangiocarcinoma that confers sensitivity to CDK4/6 inhibitors.
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Affiliation(s)
- Philip Kitchen
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Ka Ying Lee
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Danielle Clark
- Department of Biochemistry, Medical School, University of Bristol, Bristol, United Kingdom
| | - Nikki Lau
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Jomnarong Lertsuwan
- Laboratory of Chemical Carcinogenesis, Chulabhorn Research Institute, Bangkok, Thailand
| | - Anyaporn Sawasdichai
- Laboratory of Chemical Carcinogenesis, Chulabhorn Research Institute, Bangkok, Thailand
| | | | - Sebastian Oltean
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, Exeter, United Kingdom
| | - Simon Afford
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Kevin Gaston
- Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, United Kingdom.
| | - Padma-Sheela Jayaraman
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom.
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14
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Sox13 is a novel early marker for hair follicle development. Biochem Biophys Res Commun 2019; 509:862-868. [PMID: 30638933 DOI: 10.1016/j.bbrc.2018.12.163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 12/25/2018] [Indexed: 12/16/2022]
Abstract
Sox13, a group D member of the Sry-related high-mobility group box (Sox) transcription factor family, is expressed in various tissues including the hair follicle. However, its spatiotemporal expression patterns in the hair follicle and its role in hair development remain to be elucidated. To address these questions, we generated Sox13-LacZ-knock-in mice (Sox13LacZ/+), in which the LacZ reporter gene was inserted in-frame into exon 2, which contains the translation initiation codon. X-gal staining in Sox13LacZ/+ embryos revealed that Sox13 is initially expressed in the epithelial portion of the placode, and subsequently in the hair germ and the hair peg during early hair follicle development. In postnatal catagen and anagen, Sox13 was detected in the epithelial sheath, whereas in telogen, Sox13 was localized in the bulge region, where hair follicle stem cells reside. Immunohistochemistry with an anti-β-galactosidase antibody and anti-hair keratin antibodies that specifically mark the different layers of the hair follicle revealed that Sox13 was predominantly expressed in the outer root sheath in anagen. However, the integumentary structures of Sox13LacZ/LacZ mice were grossly and histologically indistinguishable from those of wild type mice. These results suggest that although Sox13 is dispensable for epidermal and adnexal development, Sox13 is a useful marker for early hair follicle development.
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15
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El-Gammal Z, AlOkda A, El-Badri N. Role of human oocyte-enriched factors in somatic cell reprograming. Mech Ageing Dev 2018; 175:88-99. [PMID: 29890177 DOI: 10.1016/j.mad.2018.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 05/23/2018] [Accepted: 05/30/2018] [Indexed: 12/20/2022]
Abstract
Cellular reprograming paves the way for creating functional patient-specific tissues to eliminate immune rejection responses by applying the same genetic profile. However, the epigenetic memory of a cell remains a challenge facing the current reprograming methods and does not allow transcription factors to bind properly. Because somatic cells can be reprogramed by transferring their nuclear contents into oocytes, introducing specific oocyte factors into differentiated cells is considered a promising approach for mimicking the reprograming process that occurs during fertilization. Mammalian metaphase II oocyte possesses a superior capacity to epigenetically reprogram somatic cell nuclei towards an embryonic stem cell-like state than the current factor-based reprograming approaches. This may be due to the presence of specific factors that are lacking in the current factor-based reprograming approaches. In this review, we focus on studies identifying human oocyte-enriched factors aiming to understand the molecular mechanisms mediating cellular reprograming. We describe the role of oocyte-enriched factors in metabolic switch, chromatin remodelling, and global epigenetic transformation. This is critical for improving the quality of resulting reprogramed cells, which is crucial for therapeutic applications.
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Affiliation(s)
- Zaynab El-Gammal
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Egypt
| | - Abdelrahman AlOkda
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Egypt
| | - Nagwa El-Badri
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Egypt.
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16
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Nguyen LT, Reverter A, Cánovas A, Venus B, Anderson ST, Islas-Trejo A, Dias MM, Crawford NF, Lehnert SA, Medrano JF, Thomas MG, Moore SS, Fortes MRS. STAT6, PBX2, and PBRM1 Emerge as Predicted Regulators of 452 Differentially Expressed Genes Associated With Puberty in Brahman Heifers. Front Genet 2018; 9:87. [PMID: 29616079 PMCID: PMC5869259 DOI: 10.3389/fgene.2018.00087] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/02/2018] [Indexed: 12/17/2022] Open
Abstract
The liver plays a central role in metabolism and produces important hormones. Hepatic estrogen receptors and the release of insulin-like growth factor 1 (IGF1) are critical links between liver function and the reproductive system. However, the role of liver in pubertal development is not fully understood. To explore this question, we applied transcriptomic analyses to liver samples of pre- and post-pubertal Brahman heifers and identified differentially expressed (DE) genes and genes encoding transcription factors (TFs). Differential expression of genes suggests potential biological mechanisms and pathways linking liver function to puberty. The analyses identified 452 DE genes and 82 TF with significant contribution to differential gene expression by using a regulatory impact factor metric. Brain-derived neurotrophic factor was observed as the most down-regulated gene (P = 0.003) in post-pubertal heifers and we propose this gene influences pubertal development in Brahman heifers. Additionally, co-expression network analysis provided evidence for three TF as key regulators of liver function during pubertal development: the signal transducer and activator of transcription 6, PBX homeobox 2, and polybromo 1. Pathway enrichment analysis identified transforming growth factor-beta and Wnt signaling pathways as significant annotation terms for the list of DE genes and TF in the co-expression network. Molecular information regarding genes and pathways described in this work are important to further our understanding of puberty onset in Brahman heifers.
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Affiliation(s)
- Loan T Nguyen
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia.,Faculty of Biotechnology, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Antonio Reverter
- CSIRO Agriculture and Food, Queensland Bioscience Precinct, St. Lucia, QLD, Australia
| | - Angela Cánovas
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Bronwyn Venus
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD, Australia
| | - Stephen T Anderson
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Alma Islas-Trejo
- Department of Animal Science, University of California, Davis, Davis, CA, United States
| | - Marina M Dias
- Departamento de Zootecnia, Faculdade de Ciências Agráìrias e Veterináìrias, Universidade Estadual Paulista Júlio de Mesquita Filho, São Paulo, Brazil
| | - Natalie F Crawford
- Department of Animal Science, Colorado State University, Fort Collins, CO, United States
| | - Sigrid A Lehnert
- CSIRO Agriculture and Food, Queensland Bioscience Precinct, St. Lucia, QLD, Australia
| | - Juan F Medrano
- Department of Animal Science, University of California, Davis, Davis, CA, United States
| | - Milt G Thomas
- Department of Animal Science, Colorado State University, Fort Collins, CO, United States
| | - Stephen S Moore
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD, Australia
| | - Marina R S Fortes
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia.,Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD, Australia
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17
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CK2 abrogates the inhibitory effects of PRH/HHEX on prostate cancer cell migration and invasion and acts through PRH to control cell proliferation. Oncogenesis 2017; 6:e293. [PMID: 28134934 PMCID: PMC5294245 DOI: 10.1038/oncsis.2016.82] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 12/16/2015] [Accepted: 01/26/2016] [Indexed: 01/02/2023] Open
Abstract
PRH/HHEX (proline-rich homeodomain protein/haematopoietically expressed homeobox protein) is a transcription factor that controls cell proliferation, cell differentiation and cell migration. Our previous work has shown that in haematopoietic cells, Protein Kinase CK2-dependent phosphorylation of PRH results in the inhibition of PRH DNA-binding activity, increased cleavage of PRH by the proteasome and the misregulation of PRH target genes. Here we show that PRH and hyper-phosphorylated PRH are present in normal prostate epithelial cells, and that hyper-phosphorylated PRH levels are elevated in benign prostatic hyperplasia, prostatic adenocarcinoma, and prostate cancer cell lines. A reduction in PRH protein levels increases the motility of normal prostate epithelial cells and conversely, PRH over-expression inhibits prostate cancer cell migration and blocks the ability of these cells to invade an extracellular matrix. We show that CK2 over-expression blocks the repression of prostate cancer cell migration and invasion by PRH. In addition, we show that PRH knockdown in normal immortalised prostate cells results in an increase in the population of cells capable of colony formation in Matrigel, as well as increased cell invasion and decreased E-cadherin expression. Inhibition of CK2 reduces PRH phosphorylation and reduces prostate cell proliferation but the effects of CK2 inhibition on cell proliferation are abrogated in PRH knockdown cells. These data suggest that the increased phosphorylation of PRH in prostate cancer cells increases both cell proliferation and tumour cell migration/invasion.
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18
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Mei S, Zhu H. Multi-label multi-instance transfer learning for simultaneous reconstruction and cross-talk modeling of multiple human signaling pathways. BMC Bioinformatics 2015; 16:417. [PMID: 26718335 PMCID: PMC4697333 DOI: 10.1186/s12859-015-0841-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 07/13/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Signaling pathways play important roles in the life processes of cell growth, cell apoptosis and organism development. At present the signal transduction networks are far from complete. As an effective complement to experimental methods, computational modeling is suited to rapidly reconstruct the signaling pathways at low cost. To our knowledge, the existing computational methods seldom simultaneously exploit more than three signaling pathways into one predictive model for the discovery of novel signaling components and the cross-talk modeling between signaling pathways. RESULTS In this work, we propose a multi-label multi-instance transfer learning method to simultaneously reconstruct 27 human signaling pathways and model their cross-talks. Computational results show that the proposed method demonstrates satisfactory multi-label learning performance and rational proteome-wide predictions. Some predicted signaling components or pathway targeted proteins have been validated by recent literature. The predicted signaling components are further linked to pathways using the experimentally derived PPIs (protein-protein interactions) to reconstruct the human signaling pathways. Thus the map of the cross-talks via common signaling components and common signaling PPIs is conveniently inferred to provide valuable insights into the regulatory and cooperative relationships between signaling pathways. Lastly, gene ontology enrichment analysis is conducted to gain statistical knowledge about the reconstructed human signaling pathways. CONCLUSIONS Multi-label learning framework has been demonstrated effective in this work to model the phenomena that a signaling protein belongs to more than one signaling pathway. As results, novel signaling components and pathways targeted proteins are predicted to simultaneously reconstruct multiple human signaling pathways and the static map of their cross-talks for further biomedical research.
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Affiliation(s)
- Suyu Mei
- Software College, Shenyang Normal University, Shenyang, China. .,Bioinformatics Section, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - Hao Zhu
- Bioinformatics Section, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
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19
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Growth-promoting and tumourigenic activity of c-Myc is suppressed by Hhex. Oncogene 2014; 34:3011-22. [PMID: 25220416 DOI: 10.1038/onc.2014.240] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 06/18/2014] [Accepted: 06/30/2014] [Indexed: 12/12/2022]
Abstract
c-Myc transcription factor is a key protein involved in cellular growth, proliferation and metabolism. c-Myc is one of the most frequently activated oncogenes, highlighting the need to identify intracellular molecules that interact directly with c-Myc to suppress its function. Here we show that Hhex is able to interact with the basic region/helix-loop-helix/leucine zipper of c-Myc. Knockdown of Hhex increases proliferation rate in hepatocellular carcinoma cells, whereas Hhex expression cell-autonomously reduces cell proliferation rate in multiple cell lines by increasing G1 phase length through a c-Myc-dependent mechanism. Global transcriptomic analysis shows that Hhex counter-regulates multiple c-Myc targets involved in cell proliferation and metabolism. Concomitantly, Hhex expression leads to reduced cell size, lower levels of cellular RNA, downregulation of metabolism-related genes, decreased sensitivity to methotrexate and severe reduction in the ability to form tumours in nude mouse xenografts, all indicative of decreased c-Myc activity. Our data suggest that Hhex is a novel regulator of c-Myc function that limits c-Myc activity in transformed cells.
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20
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Wright FA, Sullivan PF, Brooks AI, Zou F, Sun W, Xia K, Madar V, Jansen R, Chung W, Zhou YH, Abdellaoui A, Batista S, Butler C, Chen G, Chen TH, D'Ambrosio D, Gallins P, Ha MJ, Hottenga JJ, Huang S, Kattenberg M, Kochar J, Middeldorp CM, Qu A, Shabalin A, Tischfield J, Todd L, Tzeng JY, van Grootheest G, Vink JM, Wang Q, Wang W, Wang W, Willemsen G, Smit JH, de Geus EJ, Yin Z, Penninx BWJH, Boomsma DI. Heritability and genomics of gene expression in peripheral blood. Nat Genet 2014; 46:430-7. [PMID: 24728292 PMCID: PMC4012342 DOI: 10.1038/ng.2951] [Citation(s) in RCA: 246] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Accepted: 03/14/2014] [Indexed: 12/14/2022]
Abstract
We assessed gene expression profiles in 2,752 twins, using a classic twin design to quantify expression heritability and quantitative trait loci (eQTLs) in peripheral blood. The most highly heritable genes (∼777) were grouped into distinct expression clusters, enriched in gene-poor regions, associated with specific gene function or ontology classes, and strongly associated with disease designation. The design enabled a comparison of twin-based heritability to estimates based on dizygotic identity-by-descent sharing and distant genetic relatedness. Consideration of sampling variation suggests that previous heritability estimates have been upwardly biased. Genotyping of 2,494 twins enabled powerful identification of eQTLs, which we further examined in a replication set of 1,895 unrelated subjects. A large number of non-redundant local eQTLs (6,756) met replication criteria, whereas a relatively small number of distant eQTLs (165) met quality control and replication standards. Our results provide a new resource toward understanding the genetic control of transcription.
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Affiliation(s)
- Fred A Wright
- 1] Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina, USA. [2] Department of Statistics, North Carolina State University, Raleigh, North Carolina, USA. [3] Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA. [4]
| | - Patrick F Sullivan
- 1] Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA. [2]
| | - Andrew I Brooks
- Department of Genetics, Rutgers University, New Brunswick, New Jersey, USA
| | - Fei Zou
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Wei Sun
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Kai Xia
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Vered Madar
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Rick Jansen
- Department of Psychiatry, VU Medical Center, Amsterdam, The Netherlands
| | - Wonil Chung
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yi-Hui Zhou
- 1] Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina, USA. [2] Department of Statistics, North Carolina State University, Raleigh, North Carolina, USA
| | - Abdel Abdellaoui
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Sandra Batista
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Casey Butler
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Guanhua Chen
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ting-Huei Chen
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - David D'Ambrosio
- Environmental and Occupational Health Sciences Institute, Rutgers University, New Brunswick, New Jersey, USA
| | - Paul Gallins
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Min Jin Ha
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jouke Jan Hottenga
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Shunping Huang
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Mathijs Kattenberg
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Jaspreet Kochar
- Environmental and Occupational Health Sciences Institute, Rutgers University, New Brunswick, New Jersey, USA
| | | | - Ani Qu
- Environmental and Occupational Health Sciences Institute, Rutgers University, New Brunswick, New Jersey, USA
| | - Andrey Shabalin
- Department of Pharmacotherapy and Outcomes Science, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jay Tischfield
- Department of Genetics, Rutgers University, New Brunswick, New Jersey, USA
| | - Laura Todd
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jung-Ying Tzeng
- 1] Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina, USA. [2] Department of Statistics, North Carolina State University, Raleigh, North Carolina, USA
| | | | - Jacqueline M Vink
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Qi Wang
- Environmental and Occupational Health Sciences Institute, Rutgers University, New Brunswick, New Jersey, USA
| | - Wei Wang
- Department of Computer Science, University of California, Los Angeles, Los Angeles, California, USA
| | - Weibo Wang
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Gonneke Willemsen
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Johannes H Smit
- Department of Psychiatry, VU Medical Center, Amsterdam, The Netherlands
| | - Eco J de Geus
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Zhaoyu Yin
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | | | - Dorret I Boomsma
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
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21
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Wang HW, Hsieh TH, Huang SY, Chau GY, Tung CY, Su CW, Wu JC. Forfeited hepatogenesis program and increased embryonic stem cell traits in young hepatocellular carcinoma (HCC) comparing to elderly HCC. BMC Genomics 2013; 14:736. [PMID: 24160375 PMCID: PMC3826595 DOI: 10.1186/1471-2164-14-736] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 10/14/2013] [Indexed: 02/07/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) in young subjects is rare but more devastating. We hypothesize that genes and etiological pathways are unique to young HCC (yHCC; ≤40 years old at diagnosis) patients. We therefore compared the gene expression profiles between yHCCs and HCCs from elderly patients. Results All 44 young HCCs (≤40 years old at the diagnosis; 23 cases in the training set while another 21 in the validation cohort) were positive for serum hepatitis B surface antigen (HBsAg), but negative for antibodies to hepatitis C virus (anti-HCV). All 48 elderly (>40 years old; 38 in the training set while another 10 in the validation cohort) HCC patients enrolled were also serum HBsAg positive and anti-HCV negative. Comparative genomics analysis was further performed for elucidating enriched or suppressed biological activities in different HCC subtypes. The yHCC group showed more macroscopic venous invasions (60.9% vs. 10.5%, p < 0.001), fewer associated cirrhosis (17.4% vs. 63.2%, p < 0.001), and distinct profiles of expressed genes, especially those related to DNA replication and repair. yHCCs possessed increased embryonic stem cell (ESC) traits and were more dedifferentiated. A 309-gene signature was obtained from two training cohorts and validated in another independent data set. The ILF3 ESC gene, which was previously reported in poorly differentiated breast cancers and bladder carcinomas, was also present in yHCCs. Genes associated with HCC suppression, including AR and ADRA1A, were less abundant in yHCCs. ESC genes were also more enriched in advanced HCCs from elderly patients. Conclusion This study revealed the molecular makeup of yHCC and the link between ESC traits and HCC subtypes. Findings in elderly tumors, therefore, cannot be simply extrapolated to young patients, and yHCC should be treated differently.
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Affiliation(s)
| | | | | | | | | | | | - Jaw-Ching Wu
- Institute of Clinical Medicine, National Yang-Ming University, No, 201, Sec, 2, Shih-Pai Rd, Taipei, Taiwan.
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22
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Munger SC, Natarajan A, Looger LL, Ohler U, Capel B. Fine time course expression analysis identifies cascades of activation and repression and maps a putative regulator of mammalian sex determination. PLoS Genet 2013; 9:e1003630. [PMID: 23874228 PMCID: PMC3708841 DOI: 10.1371/journal.pgen.1003630] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 05/28/2013] [Indexed: 02/07/2023] Open
Abstract
In vertebrates, primary sex determination refers to the decision within a bipotential organ precursor to differentiate as a testis or ovary. Bifurcation of organ fate begins between embryonic day (E) 11.0-E12.0 in mice and likely involves a dynamic transcription network that is poorly understood. To elucidate the first steps of sexual fate specification, we profiled the XX and XY gonad transcriptomes at fine granularity during this period and resolved cascades of gene activation and repression. C57BL/6J (B6) XY gonads showed a consistent ~5-hour delay in the activation of most male pathway genes and repression of female pathway genes relative to 129S1/SvImJ, which likely explains the sensitivity of the B6 strain to male-to-female sex reversal. Using this fine time course data, we predicted novel regulatory genes underlying expression QTLs (eQTLs) mapped in a previous study. To test predictions, we developed an in vitro gonad primary cell assay and optimized a lentivirus-based shRNA delivery method to silence candidate genes and quantify effects on putative targets. We provide strong evidence that Lmo4 (Lim-domain only 4) is a novel regulator of sex determination upstream of SF1 (Nr5a1), Sox9, Fgf9, and Col9a3. This approach can be readily applied to identify regulatory interactions in other systems.
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Affiliation(s)
- Steven C. Munger
- Department of Cell Biology, Duke University, Durham, North Carolina, United States of America
- Center for Genome Dynamics, The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | - Anirudh Natarajan
- Program in Computational Biology and Bioinformatics, Duke University, Durham, North Carolina, United States of America
| | - Loren L. Looger
- Howard Hughes Medical Institute, Janelia Farm Research Campus, Ashburn, Virginia, United States of America
| | - Uwe Ohler
- Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
- Department of Biostatistics & Bioinformatics, Duke University, Durham, North Carolina, United States of America
| | - Blanche Capel
- Department of Cell Biology, Duke University, Durham, North Carolina, United States of America
- * E-mail:
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23
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Malhotra N, Narayan K, Cho OH, Sylvia KE, Yin C, Melichar H, Rashighi M, Lefebvre V, Harris JE, Berg LJ, Kang J. A network of high-mobility group box transcription factors programs innate interleukin-17 production. Immunity 2013; 38:681-93. [PMID: 23562159 PMCID: PMC3811080 DOI: 10.1016/j.immuni.2013.01.010] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 01/28/2013] [Indexed: 01/09/2023]
Abstract
How innate lymphoid cells (ILCs) in the thymus and gut become specialized effectors is unclear. The prototypic innate-like γδ T cells (Tγδ17) are a major source of interleukin-17 (IL-17). We demonstrate that Tγδ17 cells are programmed by a gene regulatory network consisting of a quartet of high-mobility group (HMG) box transcription factors, SOX4, SOX13, TCF1, and LEF1, and not by conventional TCR signaling. SOX4 and SOX13 directly regulated the two requisite Tγδ17 cell-specific genes, Rorc and Blk, whereas TCF1 and LEF1 countered the SOX proteins and induced genes of alternate effector subsets. The T cell lineage specification factor TCF1 was also indispensable for the generation of IL-22 producing gut NKp46(+) ILCs and restrained cytokine production by lymphoid tissue inducer-like effectors. These results indicate that similar gene network architecture programs innate sources of IL-17, independent of anatomical origins.
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MESH Headings
- Animals
- Antigens, Ly/metabolism
- Autoantigens/genetics
- Autoantigens/metabolism
- Cell Differentiation/genetics
- Cells, Cultured
- Gene Regulatory Networks/immunology
- Hepatocyte Nuclear Factor 1-alpha/genetics
- Hepatocyte Nuclear Factor 1-alpha/metabolism
- High Mobility Group Proteins/genetics
- High Mobility Group Proteins/metabolism
- Immunity, Innate/genetics
- Interleukin-17/biosynthesis
- Interleukin-17/genetics
- Interleukins/immunology
- Intestines/immunology
- Lymphocyte Subsets/immunology
- Lymphoid Enhancer-Binding Factor 1/genetics
- Lymphoid Enhancer-Binding Factor 1/metabolism
- Mice
- Mice, Knockout
- Mice, Transgenic
- Natural Cytotoxicity Triggering Receptor 1/metabolism
- Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- SOXC Transcription Factors/genetics
- SOXC Transcription Factors/metabolism
- Signal Transduction/immunology
- T-Lymphocytes/immunology
- Transcriptional Activation/immunology
- Interleukin-22
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Affiliation(s)
- Nidhi Malhotra
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655, USA
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24
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Ho MM, Yoganathan P, Chu KY, Karunakaran S, Johnson JD, Clee SM. Diabetes genes identified by genome-wide association studies are regulated in mice by nutritional factors in metabolically relevant tissues and by glucose concentrations in islets. BMC Genet 2013; 14:10. [PMID: 23442068 PMCID: PMC3664586 DOI: 10.1186/1471-2156-14-10] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 02/21/2013] [Indexed: 01/03/2023] Open
Abstract
Background Genome-wide association studies (GWAS) have recently identified many new genetic variants associated with the development of type 2 diabetes. Many of these variants are in introns of known genes or between known genes, suggesting they affect the expression of these genes. The regulation of gene expression is often tissue and context dependent, for example occurring in response to dietary changes, hormone levels, or many other factors. Thus, to understand how these new genetic variants associated with diabetes risk may act, it is necessary to understand the regulation of their cognate genes. Results We identified fourteen type 2 diabetes-associated genes discovered by the first waves of GWAS for which there was little prior evidence of their potential role in diabetes (Adam30, Adamts9, Camk1d, Cdc123, Cdkal1, Cdkn2a, Cdkn2b, Ext2, Hhex, Ide, Jazf1, Lgr5, Thada and Tspan8). We examined their expression in metabolically relevant tissues including liver, adipose tissue, brain, and hypothalamus obtained from mice under fasted, non-fasted and high fat diet-fed conditions. In addition, we examined their expression in pancreatic islets from these mice cultured in low and high glucose. We found that the expression of Jazf1 was reduced by high fat feeding in liver, with similar tendencies in adipose tissue and the hypothalamus. Adamts9 expression was decreased in the hypothalamus of high fat fed mice. In contrast, the expression of Camk1d, Ext2, Jazf1 and Lgr5 were increased in the brain of non-fasted animals compared to fasted mice. Most notably, the expression levels of most of the genes were decreased in islets cultured in high glucose. Conclusions These data provide insight into the metabolic regulation of these new type 2 diabetes genes that will be important for determining how the GWAS variants affect gene expression and ultimately the development of type 2 diabetes.
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Affiliation(s)
- Maggie M Ho
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
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25
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Miller MF, Cohen ED, Baggs JE, Hogenesch JB, Morrisey EE. High throughput genomic screen identifies multiple factors that promote cooperative Wnt signaling. PLoS One 2013; 8:e55782. [PMID: 23383281 PMCID: PMC3561354 DOI: 10.1371/journal.pone.0055782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 01/04/2013] [Indexed: 11/24/2022] Open
Abstract
Previous studies have demonstrated that certain Wnt ligands can promote high levels of cooperative signaling in a cell type specific manner. To explore the underlying mechanism of this cooperative Wnt signaling, we performed a high-throughput screen of more than 14,000 cDNAs to identify genes that promote cooperative Wnt signaling in the context of a single Wnt ligand, Wnt2. This screen identified several homeobox factors including Msx2, Nkx5.2, and Esx1, in addition to other factors known to promote Wnt signaling including Pias4. Generation of dominant-active or dominant-negative forms of Msx2 indicate that the mechanism by which homeobox factors cooperatively promote Wnt signaling is through their ability to repress gene transcription. These data identify a broad homeobox code, which acts to increase Wnt signaling through transcriptional repression.
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Affiliation(s)
- Mayumi F. Miller
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Ethan David Cohen
- Departmentof Medicine, Division of Endocrinology and Metabolism, University of Rochester School of Medicine and Dentistry, Rochester, New York, United States of America
| | - Julie E. Baggs
- Department of Pharmacology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - John B. Hogenesch
- Department of Pharmacology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Edward E. Morrisey
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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26
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Abstract
The thymus produces several types of functionally distinct T cell subsets. However, at a more fundamental level only two genetically distinct T cell lineages exist: the γδ and αß T cell lineages. Precisely how these two T cell lineages are generated from common thymocyte progenitor cells remains to be fully elucidated and is under intense investigation. Here, we highlight recent findings that have helped to provide important clues to the mechanisms that underpin the generation of γδ T cells in the mouse thymus.
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