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Wildenberg G, Mariner DJ, Anastasiadis PZ, Davis MA, Ireton R, Yu H, Smith AL, Kurley S, Daniel JM, Roczniak-Ferguson A, Xia X, Brown M, Tripathi M, Seale M, Carnahan R, Smalley-Freed W, Dohn M. Albert Reynolds (1956-2022): The father of p120. J Cell Biol 2023; 222:213832. [PMID: 36705692 PMCID: PMC9930129 DOI: 10.1083/jcb.202211100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Gregg Wildenberg
- https://ror.org/024mw5h28Department of Neurobiology and Argonne National Lab, The University of Chicago, Chicago, IL, USA,Correspondence to Gregg Wildenberg:
| | | | - Panos Z. Anastasiadis
- https://ror.org/03zzw1w08Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, USA
| | - Micheal A. Davis
- Department of Immunology, University of Washington, Seattle, WA, USA
| | - Renee Ireton
- https://ror.org/00cvxb145Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington. Administrator, Laboratory Operations Unit, Infectious Diseases Clinical Research Consortium, Seattle, WA, USA
| | - Huapeng Yu
- School of Life Sciences, SUSTech University, Shenzhen, China
| | | | | | | | | | - Xiaobo Xia
- Novartis Institutes for Biomedical Research, Cambridge, MA, USA
| | - Meredith Brown
- https://ror.org/00py81415Duke University, Durham, NC, USA
| | - Manish Tripathi
- School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
| | - Molly Seale
- Clinical Trial Support and Pipeline Excellence, USMA—US Medical Operations, Nashville, TN, USA
| | | | | | - Michael Dohn
- Metropolitan Government of Nashville and Davidson County, Nashville, TN, USA
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Lessey LR, Robinson SC, Chaudhary R, Daniel JM. Adherens junction proteins on the move—From the membrane to the nucleus in intestinal diseases. Front Cell Dev Biol 2022; 10:998373. [PMID: 36274850 PMCID: PMC9581404 DOI: 10.3389/fcell.2022.998373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
The function and structure of the mammalian epithelial cell layer is maintained by distinct intercellular adhesion complexes including adherens junctions (AJs), tight junctions, and desmosomes. The AJ is most integral for stabilizing cell-cell adhesion and conserving the structural integrity of epithelial tissues. AJs are comprised of the transmembrane protein E-cadherin and cytoplasmic catenin cofactors (α, β, γ, and p120-catenin). One organ where malfunction of AJ is a major contributor to disease states is the mammalian intestine. In the intestine, cell-cell adhesion complexes work synergistically to maintain structural integrity and homeostasis of the epithelium and prevent its malfunction. Consequently, when AJ integrity is compromised in the intestinal epithelium, the ensuing homeostatic disruption leads to diseases such as inflammatory bowel disease and colorectal carcinoma. In addition to their function at the plasma membrane, protein components of AJs also have nuclear functions and are thus implicated in regulating gene expression and intracellular signaling. Within the nucleus, AJ proteins have been shown to interact with transcription factors such as TCF/LEF and Kaiso (ZBTB33), which converge on the canonical Wnt signaling pathway. The multifaceted nature of AJ proteins highlights their complexity in modulating homeostasis and emphasizes the importance of their subcellular localization and expression in the mammalian intestine. In this review, we summarize the nuclear roles of AJ proteins in intestinal tissues; their interactions with transcription factors and how this leads to crosstalk with canonical Wnt signaling; and how nuclear AJ proteins are implicated in intestinal homeostasis and disease.
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Hercules SM, Liu X, Bassey-Archibong BBI, Skeete DHA, Smith Connell S, Daramola A, Banjo AA, Ebughe G, Agan T, Ekanem IO, Udosen J, Obiorah C, Ojule AC, Misauno MA, Dauda AM, Egbujo EC, Hercules JC, Ansari A, Brain I, MacColl C, Xu Y, Jin Y, Chang S, Carpten JD, Bédard A, Pond GR, Blenman KRM, Manojlovic Z, Daniel JM. Analysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer. Cancer Causes Control 2022; 33:831-841. [PMID: 35384527 PMCID: PMC9085672 DOI: 10.1007/s10552-022-01574-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 03/12/2022] [Indexed: 11/10/2022]
Abstract
PURPOSE Triple negative breast cancer (TNBC) is an aggressive breast cancer subtype that disproportionately affects women of African ancestry (WAA) and is often associated with poor survival. Although there is a high prevalence of TNBC across West Africa and in women of the African diaspora, there has been no comprehensive genomics study to investigate the mutational profile of ancestrally related women across the Caribbean and West Africa. METHODS This multisite cross-sectional study used 31 formalin-fixed paraffin-embedded (FFPE) samples from Barbadian and Nigerian TNBC participants. High-resolution whole exome sequencing (WES) was performed on the Barbadian and Nigerian TNBC samples to identify their mutational profiles and comparisons were made to African American, European American and Asian American sequencing data obtained from The Cancer Genome Atlas (TCGA). Whole exome sequencing was conducted on tumors with an average of 382 × coverage and 4335 × coverage for pooled germline non-tumor samples. RESULTS Variants detected at high frequency in our WAA cohorts were found in the following genes NBPF12, PLIN4, TP53 and BRCA1. In the TCGA TNBC cases, these genes had a lower mutation rate, except for TP53 (32% in our cohort; 63% in TCGA-African American; 67% in TCGA-European American; 63% in TCGA-Asian). For all altered genes, there were no differences in frequency of mutations between WAA TNBC groups including the TCGA-African American cohort. For copy number variants, high frequency alterations were observed in PIK3CA, TP53, FGFR2 and HIF1AN genes. CONCLUSION This study provides novel insights into the underlying genomic alterations in WAA TNBC samples and shines light on the importance of inclusion of under-represented populations in cancer genomics and biomarker studies.
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Affiliation(s)
- Shawn M. Hercules
- grid.25073.330000 0004 1936 8227Department of Biology, McMaster University, Hamilton, ON Canada
- African Caribbean Cancer Consortium, Philadelphia, PA USA
| | - Xiyu Liu
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | | | - Desiree H. A. Skeete
- African Caribbean Cancer Consortium, Philadelphia, PA USA
- grid.412886.10000 0004 0592 769XFaculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados
- grid.415521.60000 0004 0570 5165Department of Pathology, Queen Elizabeth Hospital, Bridgetown, Barbados
| | - Suzanne Smith Connell
- grid.412886.10000 0004 0592 769XFaculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados
- grid.415521.60000 0004 0570 5165Department of Radiation Oncology, Queen Elizabeth Hospital, Bridgetown, Barbados
- Present Address: Cancer Specialists Inc, Bridgetown, Barbados
| | - Adetola Daramola
- grid.411283.d0000 0000 8668 7085Department of Anatomic and Molecular Pathology, Lagos University Teaching Hospital, Lagos, Nigeria
| | - Adekunbiola A. Banjo
- grid.411283.d0000 0000 8668 7085Department of Anatomic and Molecular Pathology, Lagos University Teaching Hospital, Lagos, Nigeria
| | - Godwin Ebughe
- grid.413097.80000 0001 0291 6387Department of Pathology, University of Calabar Teaching Hospital, Calabar, Nigeria
| | - Thomas Agan
- grid.413097.80000 0001 0291 6387Department of Obstetrics & Gynaecology, College of Medical Sciences, University of Calabar Teaching Hospital, Calabar, Nigeria
| | - Ima-Obong Ekanem
- grid.413097.80000 0001 0291 6387Department of Pathology, College of Medical Sciences, University of Calabar Teaching Hospital, Calabar, Nigeria
| | - Joe Udosen
- grid.413097.80000 0001 0291 6387Division of General and Breast Surgery, University of Calabar Teaching Hospital, Calabar, Nigeria
| | - Christopher Obiorah
- grid.412738.bDepartment of Anatomical Pathology, University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
| | - Aaron C. Ojule
- grid.412738.bDepartment of Chemical Pathology, University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
| | - Michael A. Misauno
- grid.411946.f0000 0004 1783 4052Department of Surgery, Jos University Teaching Hospital, Jos, Nigeria
| | - Ayuba M. Dauda
- grid.411946.f0000 0004 1783 4052Department of Pathology, Jos University Teaching Hospital, Jos, Nigeria
| | | | - Jevon C. Hercules
- grid.12916.3d0000 0001 2322 4996Department of Mathematics, University of the West Indies at Mona, Kingston, Jamaica
- grid.12955.3a0000 0001 2264 7233Present Address: Wang Yanan Institute for Studies in Economics, Xiamen University, Xiamen, China
| | - Amna Ansari
- grid.25073.330000 0004 1936 8227Department of Biology, McMaster University, Hamilton, ON Canada
| | - Ian Brain
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada
| | - Christine MacColl
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada
| | - Yili Xu
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Yuxin Jin
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Sharon Chang
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - John D. Carpten
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - André Bédard
- grid.25073.330000 0004 1936 8227Department of Biology, McMaster University, Hamilton, ON Canada
| | - Greg R. Pond
- grid.25073.330000 0004 1936 8227Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON Canada
- grid.25073.330000 0004 1936 8227Department of Oncology, McMaster University, Hamilton, ON Canada
| | - Kim R. M. Blenman
- grid.433818.5Department of Internal Medicine, Section of Medical Oncology, Yale Cancer Center, School of Medicine, New Haven, CT USA
- grid.47100.320000000419368710Department of Computer Science, School of Engineering and Applied Science, Yale University, New Haven, CT USA
| | - Zarko Manojlovic
- grid.42505.360000 0001 2156 6853Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Juliet M. Daniel
- grid.25073.330000 0004 1936 8227Department of Biology, McMaster University, Hamilton, ON Canada
- African Caribbean Cancer Consortium, Philadelphia, PA USA
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Rätze MAK, Koorman T, Sijnesael T, Bassey-Archibong B, van de Ven R, Enserink L, Visser D, Jaksani S, Viciano I, Bakker ERM, Richard F, Tutt A, O'Leary L, Fitzpatrick A, Roca-Cusachs P, van Diest PJ, Desmedt C, Daniel JM, Isacke CM, Derksen PWB. Correction: Loss of E-cadherin leads to Id2-dependent inhibition of cell cycle progression in metastatic lobular breast cancer. Oncogene 2022; 41:3507-3509. [PMID: 35610485 PMCID: PMC9232389 DOI: 10.1038/s41388-022-02355-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Max A K Rätze
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Thijs Koorman
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Thijmen Sijnesael
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Robert van de Ven
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lotte Enserink
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Daan Visser
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sridevi Jaksani
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ignacio Viciano
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute of Technology (BIST), Barcelona, Spain
| | - Elvira R M Bakker
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - François Richard
- Laboratory for Translational Breast Cancer Research, Katholieke Universiteit, Leuven, Belgium
| | - Andrew Tutt
- The Breast Cancer Now Research Unit, King's College London, London, United Kingdom
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Lynda O'Leary
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Amanda Fitzpatrick
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Pere Roca-Cusachs
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute of Technology (BIST), Barcelona, Spain
| | - Paul J van Diest
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Christine Desmedt
- Laboratory for Translational Breast Cancer Research, Katholieke Universiteit, Leuven, Belgium
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Clare M Isacke
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Patrick W B Derksen
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands.
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Hercules SM, Alnajar M, Chen C, Mladjenovic SM, Shipeolu BA, Perkovic O, Pond GR, Mbuagbaw L, Blenman KR, Daniel JM. Triple-negative breast cancer prevalence in Africa: a systematic review and meta-analysis. BMJ Open 2022; 12:e055735. [PMID: 35623750 PMCID: PMC9150263 DOI: 10.1136/bmjopen-2021-055735] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE The aggressive triple-negative breast cancer (TNBC) subtype disproportionately affects women of African ancestry across the diaspora, but its frequency across Africa has not been widely studied. This study seeks to estimate the frequency of TNBC among African populations. DESIGN Systematic review and meta-analysis using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework. DATA SOURCES PubMed, EMBASE, African Journals Online and Web of Science were searched on 25 April 2021. ELIGIBILITY CRITERIA FOR SELECTING STUDIES We included studies that use breast cancer tissue samples from indigenous African women with sample size of eligible participants ≥40 and full receptor status for all three receptors (oestrogen receptor (ER)/progesterone receptor (PR)/human epidermal growth factor receptor 2 (HER2)) reported. DATA EXTRACTION AND SYNTHESIS Two independent reviewers extracted data and assessed risk of bias using the modified assessment tool by Hoy et al. (2012) for prevalence studies. A random-effects meta-analysis was performed, and data were pooled using the inverse-variance method and logit transformation. Pooled frequencies were reported with 95% CIs calculated with the Clopper-Pearson method and heterogeneity quantified with I2 statistic. GRADE assessed the certainty of the evidence. RESULTS 1808 potentially eligible studies were identified of which 67 were included in the systematic review and 60 were included in the meta- analysis. Pooled TNBC frequency across African countries represented was estimated to be 27.0%; 95% CI: 24.0% to 30.2%, I2=94%. Pooled TNBC frequency was highest across West Africa, 45.7% (n=15, 95% CI: 38.8% to 52.8%, I2=91%) and lowest in Central Africa, 14.9% (n=1, 95% CI: 8.9 % to 24.1%). Estimates for TNBC were higher for studies that used Allred guidelines for ER/PR status compared with American Society of Clinical Oncology(ASCO)/College of American Pathologists(CAP) guidelines, and for studies that used older versions of ASCO/CAP guidelines for assessing HER2 status. Certainty of evidence was assessed to be very low using GRADE approach. CONCLUSION TNBC frequency was variable with the highest frequency reported in West Africa. Greater emphasis should be placed on establishing protocols for assessing receptor status due to the variability among studies.
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Affiliation(s)
- Shawn M Hercules
- Biology, McMaster University, Hamilton, Ontario, Canada
- African-Caribbean Cancer Consortium, Philadelphia, Pennsylvania, USA
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Meena Alnajar
- Biology, McMaster University, Hamilton, Ontario, Canada
- Osgoode Hall Law School, York University, Toronto, Ontario, Canada
| | - Chen Chen
- Biology, McMaster University, Hamilton, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Stefan M Mladjenovic
- Biology, McMaster University, Hamilton, Ontario, Canada
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Bolade Ajarat Shipeolu
- Biology, McMaster University, Hamilton, Ontario, Canada
- Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Olga Perkovic
- McMaster University Library, McMaster University, Hamilton, Ontario, Canada
| | - Greg R Pond
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Lawrence Mbuagbaw
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
- Biostatistics Unit, Father Sean O'Sullivan Research Centre, St. Joseph's Healthcare, Hamilton, Ontario, Canada
- Centre for Development of Best Practices in Health (CDBPH), Yaoundé Central Hospital, Yaoundé, Cameroon
- Division of Epidemiology and Biostatistics, Department of Global Health, Stellenbosch University, Cape Town, South Africa
| | - Kim Rm Blenman
- Department of Internal Medicine, Section of Medical Oncology, Yale University Yale Cancer Center, New Haven, Connecticut, USA
- Department of Computer Science, Yale School of Engineering and Applied Science, Yale University, New Haven, Connecticut, USA
| | - Juliet M Daniel
- Biology, McMaster University, Hamilton, Ontario, Canada
- African-Caribbean Cancer Consortium, Philadelphia, Pennsylvania, USA
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6
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Hercules SM, Liu X, Bassey-Archibong BI, Skeete DH, Connell SS, Daramola A, Banjo AA, Ebughe G, Agan T, Ekanem IO, Udosen JE, Obiorah C, Ojule AC, Misauno MA, Dauda AM, Egbujo EC, Hercules JC, Ansari A, Brain I, MacColl C, Xu Y, Jin Y, Chang S, Carpten JD, Bédard A, Pond GR, Blenman KR, Manojlovic Z, Daniel JM. Abstract PO-142: Analysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer. Cancer Epidemiol Biomarkers Prev 2022. [DOI: 10.1158/1538-7755.disp21-po-142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Women of African ancestry (WAA) are disproportionately affected by the aggressive triple negative breast cancer (TNBC) subtype that is often associated with high recurrence rates and metastasis. Although there is a high prevalence of TNBC across West Africa and in women of the African diaspora, there has been no comprehensive genomics study to investigate the mutational profile of ancestrally related women across the Caribbean and West Africa. To shed more light on this phenomenon, whole exome sequencing (WES) was performed on 31 formalin-fixed paraffin-embedded TNBC tissues from ancestrally related Barbadian and Nigerian women. We compared these genomics profiles with data from The Cancer Genome Atlas (TCGA) for African American (TCGA-AA), European American (TCGA-EA) women with TNBC. With an average coverage of 382x for tumour samples (n= 31) and 4335x for pooled germline (n=22) non-tumor samples, the most mutated genes in our cohorts include NBPF12, PLIN4, TP53 and BRCA1. For TCGA TNBC cases, these genes had a lower mutation rate, except for TP53 (32% in our cohort; 63% in TCGA-AA; 67% in TCGA-EA). For all altered genes, there were no differences in frequency of mutations between WAA TNBC groups including the TCGA-AA cohort. Additionally, we observed a high frequency of copy number variant alterations in PIK3CA, TP53, FGFR2 and HIF1AN genes. This study provides in-depth insights into the underlying genomic alterations in WAA-TNBC samples and shines light on the importance of inclusion of non-European populations in cancer genomics and biomarker studies.
Citation Format: Shawn M. Hercules, Xiyu Liu, Blessing I. Bassey-Archibong, Desiree H.A. Skeete, Suzanne Smith Connell, Adetola Daramola, Adekunbiola A.F. Banjo, Godwin Ebughe, Thomas Agan, Ima-Obong Ekanem, Joe E. Udosen, Christopher Obiorah, Aaron C. Ojule, Michael A. Misauno, Ayuba M. Dauda, Ejike C. Egbujo, Jevon C. Hercules, Amna Ansari, Ian Brain, Christine MacColl, Yili Xu, Yuxin Jin, Sharon Chang, John D. Carpten, André Bédard, Gregory R. Pond, Kim R.M. Blenman, Zarko Manojlovic, Juliet M. Daniel. Analysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer [abstract]. In: Proceedings of the AACR Virtual Conference: 14th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2021 Oct 6-8. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr PO-142.
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Affiliation(s)
| | - Xiyu Liu
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
| | | | | | | | | | | | - Godwin Ebughe
- 7University of Calabar Teaching Hospital, Calabar, Nigeria,
| | - Thomas Agan
- 7University of Calabar Teaching Hospital, Calabar, Nigeria,
| | | | - Joe E. Udosen
- 7University of Calabar Teaching Hospital, Calabar, Nigeria,
| | | | - Aaron C. Ojule
- 8University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria,
| | | | | | - Ejike C. Egbujo
- 10Meena Histopathology and Cytology Laboratory, Jos, Nigeria,
| | - Jevon C. Hercules
- 11Institute for Studies in Economics, Xiamen University, Xiamen, China (Mainland),
| | | | - Ian Brain
- 1McMaster University, Hamilton, ON, Canada,
| | | | - Yili Xu
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
| | - Yuxin Jin
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
| | - Sharon Chang
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
| | - John D. Carpten
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
| | | | | | | | - Zarko Manojlovic
- 2Keck School of Medicine, University of Southern California, Los Angeles, CA,
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Siddharth S, Parida S, Muniraj N, Hercules S, Lim D, Nagalingam A, Wang C, Gyorffy B, Daniel JM, Sharma D. Concomitant activation of GLI1 and Notch1 contributes to racial disparity of human triple negative breast cancer progression. eLife 2021; 10:70729. [PMID: 34889737 PMCID: PMC8664295 DOI: 10.7554/elife.70729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 11/19/2021] [Indexed: 01/16/2023] Open
Abstract
Mortality from triple negative breast cancer (TNBC) is significantly higher in African American (AA) women compared to White American (WA) women emphasizing ethnicity as a major risk factor; however, the molecular determinants that drive aggressive progression of AA-TNBC remain elusive. Here, we demonstrate for the first time that AA-TNBC cells are inherently aggressive, exhibiting elevated growth, migration, and cancer stem-like phenotype compared to WA-TNBC cells. Meta-analysis of RNA-sequencing data of multiple AA- and WA-TNBC cell lines shows enrichment of GLI1 and Notch1 pathways in AA-TNBC cells. Enrichment of GLI1 and Notch1 pathway genes was observed in AA-TNBC. In line with this observation, analysis of TCGA dataset reveals a positive correlation between GLI1 and Notch1 in AA-TNBC and a negative correlation in WA-TNBC. Increased nuclear localization and interaction between GLI1 and Notch1 is observed in AA-TNBC cells. Of importance, inhibition of GLI1 and Notch1 synergistically improves the efficacy of chemotherapy in AA-TNBC cells. Combined treatment of AA-TNBC-derived tumors with GANT61, DAPT, and doxorubicin/carboplatin results in significant tumor regression, and tumor-dissociated cells show mitigated migration, invasion, mammosphere formation, and CD44+/CD24- population. Indeed, secondary tumors derived from triple-therapy-treated AA-TNBC tumors show diminished stem-like phenotype. Finally, we show that TNBC tumors from AA women express significantly higher level of GLI1 and Notch1 expression in comparison to TNBC tumors from WA women. This work sheds light on the racial disparity in TNBC, implicates the GLI1 and Notch1 axis as its functional mediators, and proposes a triple-combination therapy that can prove beneficial for AA-TNBC.
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Affiliation(s)
- Sumit Siddharth
- Dept. of Oncology, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Sheetal Parida
- Dept. of Oncology, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Nethaji Muniraj
- Dept. of Oncology, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Shawn Hercules
- Department of Biology, MacMaster University, Hamilton, Canada
| | - David Lim
- Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Arumugam Nagalingam
- Dept. of Oncology, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Chenguang Wang
- Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
| | - Balazs Gyorffy
- MTA TTK Momentum Cancer Biomarker Research Group, Budapest, Hungary.,Semmelweis University, Department of Bioinformatics and 2nd Dept. of Pediatrics, Budapest, Hungary
| | - Juliet M Daniel
- Department of Biology, MacMaster University, Hamilton, Canada
| | - Dipali Sharma
- Dept. of Oncology, Johns Hopkins University School of Medicine and Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, United States
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8
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Rätze MAK, Koorman T, Sijnesael T, Bassey-Archibong B, van de Ven R, Enserink L, Visser D, Jaksani S, Bakker E, Richard F, Tutt A, Steele R, Pettitt S, Lord CJ, Fitzpatrick A, Isacke C, van Diest PJ, Desmedt C, Daniel JM, Derksen PW. Abstract LB246: E-cadherin loss drives Id2-dependent dampening of cell cycle progression and predicts increased susceptibility to CDK4/6 inhibition in lobular breast cancer. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-lb246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Invasive lobular breast carcinoma (ILC) is a low grade and mostly chemo-refractory luminal-type breast cancer that has been linked to sustained proliferative quiescence and long-term latency relapses (15-20 years). Loss of E-cadherin causes metastatic lobular breast cancer, partly through acquisition of anchorage independence. It is however still unknown how ILC cells control the balance between proliferative indolence and cell cycle re-entry at the metastatic site. We show here that E-cadherin loss leads to upregulation of Id2 through p120-catenin/Kaiso-dependent transcriptional derepression. Anchorage independent conditions further exacerbate p120-driven Id2 expression, leading to a sustained G0/G1 cell cycle arrest through binding of cytosolic Id2 to hypo-phosphorylated Rb. Intriguingly, we find that E-cadherin inactivation causes increased sensitivity to CDK4/6 inhibition in mouse and human breast cancer cell lines and primary tumor organoids. Finally, we find that Id2 expression is elevated in human ILC when compared to ductal breast cancers. Based on these data, we propose that combined E-cadherin loss and cytosolic Id2 expression can be used for the differential diagnosis of ILC and represent a candidate predictive biomarker pair for cell cycle targeting drug efficacy.
Citation Format: Max Antonius Klaus Rätze, Thijs Koorman, Thijmen Sijnesael, Blessing Bassey-Archibong, Robert van de Ven, Lotte Enserink, Daan Visser, Sridevi Jaksani, Elvira Bakker, François Richard, Andrew Tutt, Rebecca Steele, Stephen Pettitt, Christopher J. Lord, Amanda Fitzpatrick, Clare Isacke, Paul J. van Diest, Christine Desmedt, Juliet M. Daniel, Patrick W.B. Derksen. E-cadherin loss drives Id2-dependent dampening of cell cycle progression and predicts increased susceptibility to CDK4/6 inhibition in lobular breast cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr LB246.
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Affiliation(s)
| | - Thijs Koorman
- 1University Medical Center Utrecht, Utrecht, Netherlands
| | | | | | | | - Lotte Enserink
- 1University Medical Center Utrecht, Utrecht, Netherlands
| | - Daan Visser
- 1University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Elvira Bakker
- 1University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Andrew Tutt
- 4King's College London, London, United Kingdom
| | - Rebecca Steele
- 5The Institute of Cancer Research, London, United Kingdom
| | | | | | | | - Clare Isacke
- 5The Institute of Cancer Research, London, United Kingdom
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9
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De Freitas C, Buckley R, Klimo R, Daniel JM, Mountjoy M, Vanstone M. Admissions experiences of aspiring physicians from low-income backgrounds. Med Educ 2021; 55:840-849. [PMID: 33529399 DOI: 10.1111/medu.14462] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 01/16/2021] [Accepted: 01/27/2021] [Indexed: 05/14/2023]
Abstract
INTRODUCTION Students from low-income backgrounds (LIB) have been under-represented in Canadian medical schools for over fifty years. Despite our awareness of this problem, little is known about the experiences of aspiring physicians from LIB in Canada who are working towards medical school admission. Consequently, we have little insight into the barriers and facilitators that may be used to increase the representation of students from LIB in Canadian medical schools. METHODS This paper describes a qualitative description interview study aimed at understanding the experiences of aspiring physicians from LIB as they attempt to gain entry to medical school. We conducted semi-structured interviews with 21 participants at different stages of their undergraduate, master's, and non-medical professional education, and used the theories of intersectionality and identity capital as a theoretical framework for identifying barriers and facilitators to a career in medicine. RESULTS Participants experienced social, identity-related, economic, structural and informational barriers to a career in medicine. Intrinsic facilitators included motivation, self-confidence, attitude, strategy, information-seeking and sorting, and financial literacy and increasing income. Extrinsic facilitators were social, informational, financial and institutional in nature. CONCLUSION This study fills existing knowledge gaps in the literature by identifying the pre-admissions barriers and facilitators encountered by aspiring physicians from LIB in Canada. The barriers and facilitators outlined in this study offer a framework for identifying target areas in developing support for admitting medical students from LIB. Given that medical students from LIB are more likely to serve underserved populations, our study is relevant to Canadian medical schools' social accountability commitment to producing physicians that meet the health needs of marginalised and vulnerable patients.
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Affiliation(s)
- Chanté De Freitas
- Master's of Health Science Education Program, McMaster University, Hamilton, ON, Canada
- McMaster Education Research, Innovation & Theory program (MERIT), Hamilton, ON, Canada
| | - Rya Buckley
- Biology and Psychology, Neuroscience & Behaviour Honours B.Sc. Program, McMaster University, Hamilton, ON, Canada
| | - Rebecca Klimo
- Undergraduate MD Program, McMaster University, Hamilton, ON, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Margo Mountjoy
- Undergraduate MD Program, McMaster University, Hamilton, ON, Canada
- Department of Family Medicine, McMaster University, Hamilton, ON, Canada
| | - Meredith Vanstone
- McMaster Education Research, Innovation & Theory program (MERIT), Hamilton, ON, Canada
- Department of Family Medicine, McMaster University, Hamilton, ON, Canada
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10
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Mott JHL, Daniel JM. Interactions of Electromagnetic Radiation and Subatomic Particles with Matter - Part 2. Clin Oncol (R Coll Radiol) 2021; 33:455-460. [PMID: 33712338 DOI: 10.1016/j.clon.2021.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/08/2021] [Indexed: 11/18/2022]
Affiliation(s)
- J H L Mott
- Radiotherapy Physics, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
| | - J M Daniel
- Medical Physics, South Tees Hospitals NHS Foundation Trust, Middlesbrough, UK
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11
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Mott JHL, Daniel JM. Interactions of Electromagnetic Radiation and Subatomic Particles with Matter - Part 1. Clin Oncol (R Coll Radiol) 2021; 33:451-454. [PMID: 33707070 DOI: 10.1016/j.clon.2021.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/08/2021] [Indexed: 11/25/2022]
Affiliation(s)
- J H L Mott
- Radiotherapy Physics, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Medical Physics, South Tees Hospitals NHS Foundation Trust, Middlesbrough, UK.
| | - J M Daniel
- Radiotherapy Physics, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Medical Physics, South Tees Hospitals NHS Foundation Trust, Middlesbrough, UK
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12
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Abstract
Due to potential health risks, current recommendations are that individuals who wish to use hormone therapy to treat menopausal symptoms do so for the shortest period of time possible. In our investigation into how short-term use of estrogens in midlife following loss of ovarian function exerts long-term effects on female cognitive aging in rodents, we discovered a link between the ability of previous exposure to estradiol to enhance memory in the long term and its ability to increase estrogen receptor α (ERα) levels in the hippocampus, a brain area important for memory. Follow-up studies in model systems implicate a role for ERα in enhanced cognitive function independent of ovarian or exogenously administered estrogens. Results are consistent with clinical studies in which brain ERα levels in older women and men are related to cognitive functioning and risk of cognitive decline is associated with polymorphisms in the gene that transcribes ERα. Research in preclinical models reveals mechanisms through which ERα can be activated and affect cognition in the absence of ovarian estrogens, including ligand-independent activation via insulin-like growth factor-1 signaling and activation by brain-derived neuroestrogens. This report reviews preclinical and clinical data that collectively point to the importance of ERα in cognition and highlights the need to differentiate the role of estrogen receptors from their classical ligands as we seek approaches to facilitate successful cognitive aging.
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Affiliation(s)
- N E Baumgartner
- Neuroscience Program, Tulane University, New Orleans, LA, USA.,Brain Institute, Tulane University, New Orleans, LA, USA
| | - J M Daniel
- Neuroscience Program, Tulane University, New Orleans, LA, USA.,Brain Institute, Tulane University, New Orleans, LA, USA.,Department of Psychology, Tulane University, New Orleans, LA, USA
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13
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Hidalgo-Sastre A, Desztics J, Dantes Z, Schulte K, Ensarioglu HK, Bassey-Archibong B, Öllinger R, Engleiter T, Rayner L, Einwächter H, Daniel JM, Altaee ASA, Steiger K, Lesina M, Rad R, Reichert M, von Figura G, Siveke JT, Schmid RM, Lubeseder-Martellato C. Loss of Wasl improves pancreatic cancer outcome. JCI Insight 2020; 5:127275. [PMID: 32434991 DOI: 10.1172/jci.insight.127275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/22/2020] [Indexed: 12/20/2022] Open
Abstract
Several studies have suggested an oncogenic role for the neural Wiskott-Aldrich syndrome protein (N-WASP, encoded by the Wasl gene), but thus far, little is known about its function in pancreatic ductal adenocarcinoma (PDAC). In this study, we performed in silico analysis of WASL expression in PDAC patients and found a correlation between low WASL expression and prolonged survival. To clarify the role of Wasl in pancreatic carcinogenesis, we used 2 oncogenic Kras-based PDAC mouse models with pancreas-specific Wasl deletion. In line with human data, both mouse models had an increased survival benefit due to either impaired tumor development in the presence of the tumor suppressor Trp53 or the delayed tumor progression and senescent phenotype upon genetic ablation of Trp53. Mechanistically, loss of Wasl resulted in cell-autonomous senescence through displacement of the N-WASP binding partners WASP-interacting protein (WIP) and p120ctn; vesicular accumulation of GSK3β, as well as YAP1 and phosphorylated β-catenin, which are components of the destruction complex; and upregulation of Cdkn1a(p21), a master regulator of senescence. Our findings, thus, indicate that Wasl functions in an oncogenic manner in PDAC by promoting the deregulation of the p120-catenin/β-catenin/p21 pathway. Therefore, strategies to reduce N-WASP activity might improve the survival outcomes of PDAC patients.
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Affiliation(s)
- Ana Hidalgo-Sastre
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Judit Desztics
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Zahra Dantes
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Katharina Schulte
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Hilal Kabadayi Ensarioglu
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany.,Department of Histology and Embryology, Manisa Celal Bayar University, Turkey
| | | | - Rupert Öllinger
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany.,Institute of Molecular Oncology and Functional Genomics and
| | - Thomas Engleiter
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany.,Institute of Molecular Oncology and Functional Genomics and
| | - Lyndsay Rayner
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Henrik Einwächter
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | | | - Katia Steiger
- Institute of Pathology, Technical University of Munich, Munich, Germany
| | - Marina Lesina
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Roland Rad
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany.,Institute of Molecular Oncology and Functional Genomics and
| | - Maximilian Reichert
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Guido von Figura
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany
| | - Jens T Siveke
- Institute for Developmental Cancer Therapeutics, West German Cancer Center, University Hospital Essen, Essen, Germany.,Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK) partner site Essen, Essen, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Germany.,Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK) partner site Essen, Essen, Germany
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14
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Hercules SM, Hercules JC, Ansari A, Date SAJ, Skeete DHA, Smith Connell SP, Pond GR, Daniel JM. High triple-negative breast cancer prevalence and aggressive prognostic factors in Barbadian women with breast cancer. Cancer 2020; 126:2217-2224. [PMID: 32154924 DOI: 10.1002/cncr.32771] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/17/2020] [Accepted: 01/22/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Women of African ancestry (WAA) are disproportionately affected by triple-negative breast cancer (TNBC), which remains one of the most clinically challenging breast cancer (BCa) subtypes. This study investigated the prevalence of TNBC and epidemiological trends for BCa in Barbados, a Caribbean island with a high percentage of African ancestry. METHODS Pathology reports for all BCa cases between 2007 and 2016 were collected from the sole hospital in Barbados and reviewed. The clinicopathological data collected included age, tumor grade, lymph node status, and hormone receptor status as determined by immunohistochemistry. BCa data for non-Hispanic white (NHW) and non-Hispanic black (NHB) American populations were accessed from the Surveillance, Epidemiology, and End Results database. RESULTS There were 1997 BCa cases in Barbados between 2007 and 2016 for an estimated incidence rate of 135.1 per 100,000 women in Barbados (standardized to the US population, where the standardized incidence rates for NHBs and NHWs were 141.4 and 152.6 per 100,000, respectively). Age-specific incidence rates in Barbados for this period were consistently higher in younger age groups (15-59 years) in comparison with NHWs and NHBs. Between 2010 and 2016 in Barbados, a TNBC prevalence of 25% was observed, whereas TNBC prevalences of 21% and 10% were observed in NHBs and NHWs, respectively. CONCLUSIONS The BCa incidence was higher in younger Barbadian women than NHWs and NHBs, and the TNBC prevalence was ~2.5 times higher than the prevalence in NHWs. This hints at a possible genetic predisposition and other socioeconomic factors that could explain the high TNBC prevalence and aggressive clinical course in WAA globally.
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Affiliation(s)
- Shawn M Hercules
- Department of Biology, McMaster University, Hamilton, Ontario, Canada.,African Caribbean Cancer Consortium, Philadelphia, Pennsylvania
| | - Jevon C Hercules
- Department of Mathematics, University of the West Indies at Mona, Kingston, Jamaica
| | - Amna Ansari
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Stephanie A J Date
- African Caribbean Cancer Consortium, Philadelphia, Pennsylvania.,Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados
| | - Desiree H A Skeete
- African Caribbean Cancer Consortium, Philadelphia, Pennsylvania.,Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados.,Department of Pathology, Queen Elizabeth Hospital, Bridgetown, Barbados
| | - Suzanne P Smith Connell
- Faculty of Medical Sciences, University of the West Indies at Cave Hill, Bridgetown, Barbados.,Department of Radiation Oncology, Queen Elizabeth Hospital, Bridgetown, Barbados
| | - Gregory R Pond
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada.,African Caribbean Cancer Consortium, Philadelphia, Pennsylvania
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15
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Dutzmann J, Daniel JM, Korte L, Kloss FJ, Knoepp K, Croce KJ, Herbst TJ, Huibregtse B, Vogt FJ, Marx N, Offermanns S, Bauersachs J, Sedding DG. P4143IL-6 production in the vascular adventitia and adventitia-media-crosstalk in neointima formation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The aim of this study was to analyze the impact of the adventitial layer on vascular remodeling processes and to define the underlying cellular mechanisms.
Methods and results
Morphometric analysis of human coronary arteries and of murine femoral arteries at several times following vascular intervention revealed a significant correlation of neointimal and adventitial thickening (R2=0.6845, P<0.001 for human samples; R2=0.6845, P<0.001 for human samples. Immunohistochemical staining for the proliferation marker Ki-67 was performed 7, 14, and 21 days following injury of the murine femoral artery. Formation of a neointimal lesion at 21 days was preceded by high adventitial proliferation rates at 7 and 14 days (85.00±6.041 Ki67+adventitial cells vs. 5.118±0.633 Ki-67+neointimal cells at 7d, P<0.0014; 28.80±5.240 Ki-67+adv. cells vs. 19.40±2.468 Ki-67+neoint. cells at 14d, P<0.006, n=17). Complete removal of the adventitial layer prevented neointima formation, attributing pivotal importance to the adventitial layer (luminal stenosis: 71.73±3.77% vs. 7.44±1.71%, n=5, P<0.0001). Re-transplantation of the aortic adventitia of ubiquitously GFP expressing C57BL/6-Tg (CAG-EGFP)1Osb/Jmice around the medial vascular layer of the femoral artery where the native adventitia has been removed completely restored neointima formation. Importantly, only very view GFP+cells were present in the neointimal layer, indicating that a direct contribution of adventitial cells to the neointimal lesion represents an extremely rare event.
To investigate a potential paracrine effect of the activated adventitial layer, we explanted adventitial transplants 14 days following injury and transplantation and incubated the respective samples in serum-free media for 24 hours. BrdU incorporation assays and scratch wound assays revealed significantly increased proliferation and migration rates of human coronary artery SMCs in response to the supernatant of adventitial transplants compared to the supernatant of control samples. Further secretome analyses of the same adventitial supernatants identified predominantly interleukin (IL)-6 to trigger SMC proliferation and migration. Accordingly, serum-free media incubated with adventitial grafts of IL-6−/− mice prevented SMC proliferation and migration. Transplantation of the adventitia of IL-6−/− mice into C57BL/6J wild type mice was not sufficient to trigger neointima formation.
Plain old balloon angioplasty, bare metal stent implantation, or drug-eluting stent implantation in swine coronary arteries and analysis for Ki-67+ cell counts supported the hypothesis in the large animal model and a more clinical setting.
Conclusion
Acute vascular injury is followed by an expansion of cytokine-producing adventitial cells, whose paracrine function and especially whose release of IL-6 is essential for the subsequent induction of the proliferation and migration of local SMC and thus for neointima formation.
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Affiliation(s)
- J Dutzmann
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - J M Daniel
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - L Korte
- Hannover Medical School, Hannover, Germany
| | - F J Kloss
- Hannover Medical School, Hannover, Germany
| | - K Knoepp
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - K J Croce
- Brigham and Women's Hospital, Cardiovascular Division, Boston, United States of America
| | - T J Herbst
- Boston Scientific Corporation Inc., Preclinical Sciences, Natick, United States of America
| | - B Huibregtse
- Boston Scientific Corporation Inc., Preclinical Sciences, Natick, United States of America
| | - F J Vogt
- RWTH University Hospital Aachen, Aachen, Germany
| | - N Marx
- RWTH University Hospital Aachen, Aachen, Germany
| | - S Offermanns
- Max Planck Institute for Heart and Lung Research, Department of Pharmacology, Bad Nauheim, Germany
| | | | - D G Sedding
- University Clinic Halle (Saale), Halle (Saale), Germany
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Knoepp K, Dutzmann J, Kalies K, Rieckmann M, Daniel JM, Bauersachs J, Sedding DG. 261Decisive role of microRNA-494 in smooth muscle cell proliferation and vascular remodeling. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Proliferation of vascular smooth muscle cells triggered by cytokines and growth factors is a main driver in the development of vascular proliferative diseases such as atherosclerosis and in-stent-restenosis after angioplasty. MicroRNAs (miR) are small noncoding RNAs that can inhibit the expression of multiple genes simultaneously. However, the contribution of microRNAs to the differential gene regulation that triggers vascular remodeling processes is not well understood.
Methods and results
Neointima formation was induced by a wire-mediated injury of the femoral artery in C57BL/6 mice. Microarray analysis of the developing neointimal lesion showed a strong reduction of miR-494 (0.411±0.04; p<0.05) at 7 days after injury. In order to investigate the expression levels of miRs in vascular cells, human coronary artery smooth muscle cells (SMC), human coronary artery endothelial cells and human monocytes were analyzed via microarray analysis. Intriguingly, miR-494 was found to be predominantly expressed in SMC via microarray and qPCR analysis. The regulation of miR-494 expression was further analyzed after stimulation of SMC with 10%FCS. Following this mitogenic stimulation, mir-494 expression dropped robustly and significantly in a time-dependent manner at 6, 9, and 24 hours. To investigate the functional impact of miR-494 on SMC proliferation, miR-494 was overexpressed using miR-494-mimics (20μM). Overexpression of miR-494 significantly reduced the FCS-induced proliferation of SMC as assessed by BrdU-incorporation. In silico analyses of potential target genes for miR-494 identified ROCK1 and Survivin, both important molecules in the mitogenic response of SMC to cytokines and growth factors, as potential targets of miR-494. Indeed, ROCK1 and Survivin were found down-regulated on the mRNA and protein level after transfection of SMC with miR-494 mimics and both mulecules could be identified as direct targets using luciferase reporter assays. Following the specific inhibition of miR-494 by local application (in a perivascular thermos-responsive, self-degrading pluronic gel) of an in vivo stabilized Pre-miR-494 after wire-induced injury of the mouse femoral artery, SMC proliferation was significantly reduced, as assessed by Ki67 immunofluorescence (26.3% vs 11.2%; p<0.05). Consistently, local application of Pre-miR-494 significantly reduced neointima formation (neointima/media ratio 2.31 in control vs 1.01 in treated animals; p<0.01).
Conclusion
Our results show that mir-494 is strongly down-regulated in proliferating SMC in vitro as well as during neointimal lesion formation in vivo. Moreover, overexpression/ reconstitution of miR-494 levels effectively prevented SMC proliferation and neointima formation, indicating an important functional role of miR-494 in these processes. Hence, miR-494 may represent an attractive SMC-specific target for future therapeutic interventions for the treatment of vascular proliferative diseases.
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Affiliation(s)
- K Knoepp
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - J Dutzmann
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - K Kalies
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - M Rieckmann
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - J M Daniel
- University Clinic Halle (Saale), Halle (Saale), Germany
| | - J Bauersachs
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - D G Sedding
- University Clinic Halle (Saale), Halle (Saale), Germany
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Robinson SC, Chaudhary R, Jiménez-Saiz R, Rayner LGA, Bayer L, Jordana M, Daniel JM. Kaiso-induced intestinal inflammation is preceded by diminished E-cadherin expression and intestinal integrity. PLoS One 2019; 14:e0217220. [PMID: 31199830 PMCID: PMC6568390 DOI: 10.1371/journal.pone.0217220] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 05/07/2019] [Indexed: 01/08/2023] Open
Abstract
Chronic intestinal inflammation contributes to pathologies such as inflammatory bowel disease (IBD) and colon cancer. While the precise etiology remains controversial, IBD is believed to manifest as a result of various factors. We previously reported that intestinal-specific overexpression of the transcription factor Kaiso results in an intestinal inflammatory response; however, the cause of this inflammation is unknown. To elucidate the underlying mechanism(s) of the Kaiso-mediated intestinal inflammatory phenotype, we evaluated two independent transgenic mouse lines that express varying levels of Kaiso (KaisoTg). Histological analyses of KaisoTg mice revealed intestinal damage including thickening of the mucosa, intestinal “lesions” and crypt abscesses, which are reminiscent of IBD pathology. Additionally, higher Kaiso levels induced intestinal neutrophilia as early as 12 weeks, which worsened as the mice aged. Notably, the Kaiso-induced intestinal inflammation correlated with a leaky intestinal barrier and mis-regulation of E-cadherin expression and localization. Interestingly, Kaiso overexpression resulted in reduced proliferation but enhanced migration of intestinal epithelial cells prior to the onset of inflammation. Collectively, these data suggest that Kaiso plays a role in regulating intestinal epithelial cell integrity and function, dysregulation of which contributes to a chronic inflammatory phenotype as mice age.
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Affiliation(s)
| | - Roopali Chaudhary
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Rodrigo Jiménez-Saiz
- Department of Pathology & Molecular Medicine, McMaster Immunology Research Centre (MIRC), McMaster University, Hamilton, Ontario, Canada
| | | | - Luke Bayer
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Manel Jordana
- Department of Pathology & Molecular Medicine, McMaster Immunology Research Centre (MIRC), McMaster University, Hamilton, Ontario, Canada
| | - Juliet M. Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
- * E-mail:
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18
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Pierre CC, Hercules SM, Yates C, Daniel JM. Dancing from bottoms up - Roles of the POZ-ZF transcription factor Kaiso in Cancer. Biochim Biophys Acta Rev Cancer 2018; 1871:64-74. [PMID: 30419310 DOI: 10.1016/j.bbcan.2018.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/05/2018] [Accepted: 10/07/2018] [Indexed: 12/11/2022]
Abstract
The POZ-ZF transcription factor Kaiso was discovered two decades ago as a binding partner for p120ctn. Since its discovery, roles for Kaiso in diverse biological processes (epithelial-to-mesenchymal transition, apoptosis, inflammation) and several signalling pathways (Wnt/β-catenin, TGFβ, EGFR, Notch) have emerged. While Kaiso's biological role in normal tissues has yet to be fully elucidated, Kaiso has been increasingly implicated in multiple human cancers including colon, prostate, ovarian, lung, breast and chronic myeloid leukemia. In the majority of human cancers investigated to date, high Kaiso expression correlates with aggressive tumor characteristics including proliferation and metastasis, and/or poor prognosis. More recently, interest in Kaiso stems from its apparent correlation with racial disparities in breast and prostate cancer incidence and survival outcomes in people of African Ancestry. This review discusses Kaiso's role in various cancers, and Kaiso's potential for driving racial disparities in incidence and/or outcomes in people of African ancestry.
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Affiliation(s)
- Christina C Pierre
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Shawn M Hercules
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Clayton Yates
- Department of Biology, Center for Cancer Research, Tuskegee University, Tuskegee, AL, USA
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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Knoepp K, Dutzmann J, Donde K, Korte L, Daniel JM, Bauersachs JM, Sedding D. P3201MicroRNA-494 - A crucial player in smooth muscle cell proliferation and vascular remodeling. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Knoepp
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - J Dutzmann
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - K Donde
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - L Korte
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - J M Daniel
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - J M Bauersachs
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
| | - D Sedding
- Hannover Medical School, Department of Cardiology and Angiology, Hannover, Germany
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Dutzmann J, Daniel JM, Korte L, Kloss F, Sirisko M, Offermanns S, Croce KJ, Bauersachs JM, Sedding DG. P3793Adventitial interleukin-6 release is critical for neointima formation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Dutzmann
- Hannover Medical School, Hannover, Germany
| | - J M Daniel
- Hannover Medical School, Hannover, Germany
| | - L Korte
- Hannover Medical School, Hannover, Germany
| | - F Kloss
- Hannover Medical School, Hannover, Germany
| | - M Sirisko
- Hannover Medical School, Hannover, Germany
| | - S Offermanns
- Max Planck Institute for Heart and Lung Research, Department of Pharmacology, Bad Nauheim, Germany
| | - K J Croce
- Brigham and Women's Hospital, Cardiovascular Division, Boston, United States of America
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Dutzmann J, Haertle M, Daniel JM, Korte L, Donde K, Bauersachs JM, Weisheit S, Sedding DG. P594BET bromodomain inhibition permits FoxO1-dependent cell cycle arrest in smooth muscle cells and prevents neointima formation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Dutzmann
- Hannover Medical School, Hannover, Germany
| | - M Haertle
- Hannover Medical School, Hannover, Germany
| | - J M Daniel
- Hannover Medical School, Hannover, Germany
| | - L Korte
- Hannover Medical School, Hannover, Germany
| | - K Donde
- Hannover Medical School, Hannover, Germany
| | | | - S Weisheit
- Hannover Medical School, Hannover, Germany
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Dutzmann J, Daniel JM, Korte L, Kloss F, Sirisko M, Offermanns S, Croce KJ, Bauersachs J, Sedding DG. 20Adventitial interleukin-6 release is critical for neointima formation. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Dutzmann
- Hannover Medical School, Hannover, Germany
| | - J M Daniel
- Hannover Medical School, Hannover, Germany
| | - L Korte
- Hannover Medical School, Hannover, Germany
| | - F Kloss
- Hannover Medical School, Hannover, Germany
| | - M Sirisko
- Hannover Medical School, Hannover, Germany
| | - S Offermanns
- Max Planck Institute for Heart and Lung Research, Department of Pharmacology, Bad Nauheim, Germany
| | - K J Croce
- Brigham and Women's Hospital, Cardiovascular Division, Boston, United States of America
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Korte L, Widmer-Teske R, Donde K, Dutzmann J, Daniel JM, Bauersachs J, Sedding DG. 13Vasorin controls smooth muscle cell proliferation by regulating EGFR activation. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L Korte
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - R Widmer-Teske
- University Hospital Giessen and Marburg, Giessen, Germany
| | - K Donde
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - J Dutzmann
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - J M Daniel
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - J Bauersachs
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
| | - D G Sedding
- Hannover Medical School, Cardiology and Angiology, Hannover, Germany
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Rayner LGA, Bassey-Archibong BI, Jaber S, Daniel JM. Abstract P5-07-06: Kaiso regulates miRNA-31 and miRNA-200 expression in triple negative breast cancer (TNBC) cells. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-07-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Breast cancer (BC) is the most frequent female cancer and a leading cause of female deaths worldwide. BC-related mortality rates are high among African American (AA) women despite the low incidence rates of breast cancer observed in this population compared with Caucasian Americans (CA). The triple negative breast cancer (TNBC) subtype lacks expression of three biomarkers used to clinically classify BC, and thus TNBCs cannot be treated with traditional receptor therapies. Moreover, as TNBC is biologically aggressive and women diagnosed with TNBC have poor outcomes. Interestingly, TNBC is most prevalent in young women of African Ancestry (WAA) compared to women of other ethnicities, but the cause of this racial disparity remains unknown. Recent studies in our lab revealed that the transcription factor Kaiso is highly expressed in TNBC tissues of WAA patients compared with those from Caucasian patients, suggesting a role for Kaiso in TNBC racial disparity. Intriguingly, our lab and others have also reported a correlation between high Kaiso expression, poor overall survival of AA BC patients compared with Caucasian patients, and increased TNBC aggressiveness/metastasis that is in part mediated via the TGFβ signaling pathway. Notably, Kaiso has also been implicated in tumor cell migration via its regulation of the tumor-suppressing microRNA-31 (miR-31) in prostate cancer cells. Remarkably, the pleiotropic miR-31 functions to suppress metastasis and its expression has been shown to be inversely correlated with aggressive breast tumor metastasis. Although Kaiso has been implicated in epithelial-to-mesenchymal transition (EMT) and TNBC metastasis, Kaiso's exact roles in the regulation of miRNAs in the context of TNBC remains to be elucidated.
Using chromatin immunoprecipitation (CHIP) analysis, we found that Kaiso binds to the miR-31 and miR-200 promoters, and we detected increased expression of these microRNAs in Kaiso-depleted TNBC cells using qRT-PCR analysis. Furthermore, using immunoblot analysis, we found that Kaiso depletion resulted in reduced expression of the actin remodelling protein WAVE3, which is a downstream target of both miR-31 and miR-200. Consistent with these molecular changes, transfection of TNBC cells with miR-31 and miR-200 mimics resulted in reduced migration of these cells compared to control TNBC cells as assessed via migration assays. These data suggest that Kaiso regulates miR-31 and miR-200 in TNBC cells, and promotes TNBC cell migration via downregulation of these miRNAs. Ongoing studies seek to assess and correlate miR-31 and miR-200 expression with Kaiso expression in TNBC tissues of WAA. Together, our findings raise the exciting possibility that Kaiso may be developed as a potential target for the treatment of TNBC patients.
Citation Format: Rayner LGA, Bassey-Archibong BI, Jaber S, Daniel JM. Kaiso regulates miRNA-31 and miRNA-200 expression in triple negative breast cancer (TNBC) cells [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-07-06.
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Affiliation(s)
- LGA Rayner
- McMaster University, Hamilton, ON, Canada
| | | | - S Jaber
- McMaster University, Hamilton, ON, Canada
| | - JM Daniel
- McMaster University, Hamilton, ON, Canada
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Bassey-Archibong BI, Hercules SM, Rayner LGA, Skeete DHA, Smith Connell SP, Brain I, Daramola A, Banjo AAF, Byun JS, Gardner K, Dushoff J, Daniel JM. Kaiso is highly expressed in TNBC tissues of women of African ancestry compared to Caucasian women. Cancer Causes Control 2017; 28:1295-1304. [PMID: 28887687 PMCID: PMC5681979 DOI: 10.1007/s10552-017-0955-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 08/31/2017] [Indexed: 12/22/2022]
Abstract
Purpose Triple-negative breast cancer (TNBC) is most prevalent in young women of African ancestry (WAA) compared to women of other ethnicities. Recent studies found a correlation between high expression of the transcription factor Kaiso, TNBC aggressiveness, and ethnicity. However, little is known about Kaiso expression and localization patterns in TNBC tissues of WAA. Herein, we analyze Kaiso expression patterns in TNBC tissues of African (Nigerian), Caribbean (Barbados), African American (AA), and Caucasian American (CA) women. Methods Formalin-fixed and paraffin embedded (FFPE) TNBC tissue blocks from Nigeria and Barbados were utilized to construct a Nigerian/Barbadian tissue microarray (NB-TMA). This NB-TMA and a commercially available TMA comprising AA and CA TNBC tissues (AA-CA-YTMA) were subjected to immunohistochemistry to assess Kaiso expression and subcellular localization patterns, and correlate Kaiso expression with TNBC clinical features. Results Nigerian and Barbadian women in our study were diagnosed with TNBC at a younger age than AA and CA women. Nuclear and cytoplasmic Kaiso expression was observed in all tissues analyzed. Analysis of Kaiso expression in the NB-TMA and AA-CA-YTMA revealed that nuclear Kaiso H scores were significantly higher in Nigerian, Barbadian, and AA women compared with CA women. However, there was no statistically significant difference in nuclear Kaiso expression between Nigerian versus Barbadian women, or Barbadian versus AA women. Conclusions High levels of nuclear Kaiso expression were detected in patients with a higher degree of African heritage compared to their Caucasian counterparts, suggesting a role for Kaiso in TNBC racial disparity. Electronic supplementary material The online version of this article (doi:10.1007/s10552-017-0955-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Shawn M Hercules
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | | | - Desiree H A Skeete
- Department of Pathology, Queen Elizabeth Hospital (QEH), Bridgetown, Barbados.,Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, Barbados
| | - Suzanne P Smith Connell
- Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, Barbados.,Department of Radiation Oncology, Queen Elizabeth Hospital (QEH), Bridgetown, Barbados
| | - Ian Brain
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Adetola Daramola
- Department of Anatomic and Molecular Pathology, Lagos University Teaching Hospital (LUTH), Lagos, Nigeria
| | - Adekunbiola A F Banjo
- Department of Anatomic and Molecular Pathology, Lagos University Teaching Hospital (LUTH), Lagos, Nigeria
| | - Jung S Byun
- Genetics Branch, National Institute of Health, Bethesda, MD, USA
| | - Kevin Gardner
- Genetics Branch, National Institute of Health, Bethesda, MD, USA
| | - Jonathan Dushoff
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON, Canada.
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Robinson SC, Donaldson-Kabwe NS, Dvorkin-Gheva A, Longo J, He L, Daniel JM. The POZ-ZF transcription factor Znf131 is implicated as a regulator of Kaiso-mediated biological processes. Biochem Biophys Res Commun 2017; 493:416-421. [PMID: 28882591 DOI: 10.1016/j.bbrc.2017.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 09/03/2017] [Indexed: 12/14/2022]
Abstract
Znf131 belongs to the family of POZ-ZF transcription factors, but, in contrast to most other characterized POZ-ZF proteins that function as transcriptional repressors, Znf131 acts as a transcriptional activator. Znf131 heterodimerizes with the POZ-ZF protein Kaiso, which itself represses a subset of canonical Wnt target genes, including the cell cycle regulator Cyclin D1. Herein, we report a possible role for Znf131 in Kaiso-mediated processes. Notably, we found that Znf131 associates with several Kaiso target gene promoters, including that of CCND1. ChIP analysis revealed that Znf131 indirectly associates with the CCND1 promoter in HCT116 and MCF7 cells via a region that encompasses the previously characterized +69 Kaiso Binding Site, hinting that the Znf131/Kaiso heterodimer may co-regulate Cyclin D1 expression. We also demonstrate that Kaiso inhibits Znf131 expression, raising the possibility that Kaiso and Znf131 act to fine-tune target gene expression. Together, our findings implicate Znf131 as a co-regulator of Kaiso-mediated biological processes.
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Affiliation(s)
| | | | - Anna Dvorkin-Gheva
- Department of Pathology and Molecular Medicine, Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Joseph Longo
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Lloyd He
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON, Canada.
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Robinson SC, Klobucar K, Pierre CC, Ansari A, Zhenilo S, Prokhortchouk E, Daniel JM. Kaiso differentially regulates components of the Notch signaling pathway in intestinal cells. Cell Commun Signal 2017. [PMID: 28637464 PMCID: PMC5480165 DOI: 10.1186/s12964-017-0178-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background In mammalian intestines, Notch signaling plays a critical role in mediating cell fate decisions; it promotes the absorptive (or enterocyte) cell fate, while concomitantly inhibiting the secretory cell fate (i.e. goblet, Paneth and enteroendocrine cells). We recently reported that intestinal-specific Kaiso overexpressing mice (KaisoTg) exhibited chronic intestinal inflammation and had increased numbers of all three secretory cell types, hinting that Kaiso might regulate Notch signaling in the gut. However, Kaiso’s precise role in Notch signaling and whether the KaisoTg secretory cell fate phenotype was linked to Kaiso-induced inflammation had yet to be elucidated. Methods Intestines from 3-month old Non-transgenic and KaisoTg mice were “Swiss” rolled and analysed for the expression of Notch1, Dll-1, Jagged-1, and secretory cell markers by immunohistochemistry and immunofluorescence. To evaluate inflammation, morphological analyses and myeloperoxidase assays were performed on intestines from 3-month old KaisoTg and control mice. Notch1, Dll-1 and Jagged-1 expression were also assessed in stable Kaiso-depleted colon cancer cells and isolated intestinal epithelial cells using real time PCR and western blotting. To assess Kaiso binding to the DLL1, JAG1 and NOTCH1 promoter regions, chromatin immunoprecipitation was performed on three colon cancer cell lines. Results Here we demonstrate that Kaiso promotes secretory cell hyperplasia independently of Kaiso-induced inflammation. Moreover, Kaiso regulates several components of the Notch signaling pathway in intestinal cells, namely, Dll-1, Jagged-1 and Notch1. Notably, we found that in KaisoTg mice intestines, Notch1 and Dll-1 expression are significantly reduced while Jagged-1 expression is increased. Chromatin immunoprecipitation experiments revealed that Kaiso associates with the DLL1 and JAG1 promoter regions in a methylation-dependent manner in colon carcinoma cell lines, suggesting that these Notch ligands are putative Kaiso target genes. Conclusion Here, we provide evidence that Kaiso’s effects on intestinal secretory cell fates precede the development of intestinal inflammation in KaisoTg mice. We also demonstrate that Kaiso inhibits the expression of Dll-1, which likely contributes to the secretory cell phenotype observed in our transgenic mice. In contrast, Kaiso promotes Jagged-1 expression, which may have implications in Notch-mediated colon cancer progression. Electronic supplementary material The online version of this article (doi:10.1186/s12964-017-0178-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shaiya C Robinson
- Department of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada
| | - Kristina Klobucar
- Department of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada.,Current address: Department of Biochemistry and Biomedical Sciences, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, L8N 3Z5, ON, Canada
| | - Christina C Pierre
- Department of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada.,Current address: Department of Life Science, University of the West Indies at St. Augustine, St. Augustine, Trinidad and Tobago
| | - Amna Ansari
- Department of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada
| | - Svetlana Zhenilo
- Federal Research Centre of Biotechnology, Russian Academy of Sciences, Moscow, Russian Federation, 117312
| | - Egor Prokhortchouk
- Federal Research Centre of Biotechnology, Russian Academy of Sciences, Moscow, Russian Federation, 117312
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada.
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Bassey-Archibong BI, Rayner LGA, Hercules SM, Aarts CW, Dvorkin-Gheva A, Bramson JL, Hassell JA, Daniel JM. Kaiso depletion attenuates the growth and survival of triple negative breast cancer cells. Cell Death Dis 2017; 8:e2689. [PMID: 28333150 PMCID: PMC5386582 DOI: 10.1038/cddis.2017.92] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/12/2017] [Accepted: 02/06/2017] [Indexed: 12/22/2022]
Abstract
Triple negative breast cancers (TNBC) are highly aggressive and lack specific targeted therapies. Recent studies have reported high expression of the transcription factor Kaiso in triple negative tumors, and this correlates with their increased aggressiveness. However, little is known about the clinical relevance of Kaiso in the growth and survival of TNBCs. Herein, we report that Kaiso depletion attenuates TNBC cell proliferation, and delays tumor onset in mice xenografted with the aggressive MDA-231 breast tumor cells. We further demonstrate that Kaiso depletion attenuates the survival of TNBC cells and increases their propensity for apoptotic-mediated cell death. Notably, Kaiso depletion downregulates BRCA1 expression in TNBC cells expressing mutant-p53 and we found that high Kaiso and BRCA1 expression correlates with a poor overall survival in breast cancer patients. Collectively, our findings reveal a role for Kaiso in the proliferation and survival of TNBC cells, and suggest a relevant role for Kaiso in the prognosis and treatment of TNBCs.
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Affiliation(s)
| | - Lyndsay G A Rayner
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Shawn M Hercules
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Craig W Aarts
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Anna Dvorkin-Gheva
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario L8S 4K1, Canada.,Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Jonathan L Bramson
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - John A Hassell
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
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Bassey-Archibong BI, Rayner LGA, Hercules S, Pathmanapan S, Daniel JM. Abstract C23: High Kaiso expression correlates with increased TGFβ signaling and aggressive TNBC in women of African Ancestry (WAA). Cancer Epidemiol Biomarkers Prev 2017. [DOI: 10.1158/1538-7755.disp16-c23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Despite increased awareness, early detection and improved therapies in the past 20 years, breast cancer (BC) remains the most frequent female cancer and a leading cause of female deaths worldwide. One of the most clinically challenging BC is the Triple Negative Breast Cancer (TNBC) subtype that is estrogen receptor (ER), progesterone receptor (PR) & human epidermal growth factor receptor-2 (HER2) negative. TNBC tumors are aggressive and metastatic, and have a poor prognosis since they cannot be treated with standard therapies (Tamoxifen or Herceptin). Intriguingly TNBC is most prevalent in young women of African Ancestry (WAA) who, despite having lower BC incidence rates than Caucasian women, have higher mortality rates. The propensity of TNBC to metastasize suggests a deregulation of the epithelial-to-mesenchymal transition (EMT) pathway that endows cells with increased motility, and is implicated in tumor progression. Our lab and others recently found a significant correlation between high expression of the POZ-ZF transcription factor Kaiso, EMT, estrogen receptor (ER) negativity in WAA, and shorter metastasis-free survival. Notably when Kaiso is depleted in TNBC cell lines, the cells exhibited decreased TGFβ signaling (a known promoter of EMT), become less motile and invasive in vitro, and did not metastasize to lungs or liver in mouse xenograft models. These findings led us to hypothesize that Kaiso plays a role in the spread of aggressive BC possibly via up-regulation of TGFβ signaling.
To gain insight into Kaiso's role in aggressive breast cancers and the racial disparity associated with BC outcomes, we generated a tissue microarray (TMA) comprised of TNBC tissues from Barbadian and Nigerian WAA, and performed expression profiling of Kaiso and various TGFβ signaling proteins (TGFβR1, TGFβR2 and p-Smad2) on the WAA-TMA. We found that high Kaiso expression correlated positively with increased TGFβ signalling in WAA TNBC tissues, thus supporting our hypothesis that Kaiso plays a role in TGFβ signaling and TNBC aggressiveness. Notably, we also observed that Kaiso depletion resulted in delayed onset of mouse xenograft tumors derived from MDA-231 TNBC cells. Mechanistic in vitro studies further revealed that Kaiso depletion reduced cell proliferation and increased apoptosis of TNBC cells, especially in response to the DNA-damaging drug Etoposide.
Our findings linking high Kaiso expression to TNBC cell survival and active TGFβ signalling in aggressive TNBCs from WAA, raises the exciting possibility that Kaiso may be developed as a diagnostic and prognostic marker for TNBC patients regardless of race. Ongoing experiments are focused on elucidating Kaiso's exact role in aggressive breast tumors and the racial disparities in breast cancer outcomes.
Citation Format: Blessing I. Bassey-Archibong, Lyndsay GA Rayner, Shawn Hercules, Sinthu Pathmanapan, Juliet M. Daniel. High Kaiso expression correlates with increased TGFβ signaling and aggressive TNBC in women of African Ancestry (WAA). [abstract]. In: Proceedings of the Ninth AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2016 Sep 25-28; Fort Lauderdale, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2017;26(2 Suppl):Abstract nr C23.
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Black KL, Witty CF, Daniel JM. Previous Midlife Oestradiol Treatment Results in Long-Term Maintenance of Hippocampal Oestrogen Receptor α Levels in Ovariectomised Rats: Mechanisms and Implications for Memory. J Neuroendocrinol 2016; 28:10.1111/jne.12429. [PMID: 27603028 PMCID: PMC5527336 DOI: 10.1111/jne.12429] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 01/28/2023]
Abstract
Ovariectomised rats that have received previous administration of oestradiol in midlife display enhanced cognition and increased hippocampal levels of oestrogen receptor (ER)α months after oestradiol treatment ended compared to ovariectomised controls. The present study aimed to investigate the mechanisms by which ERα levels are maintained following midlife oestradiol exposure and the role of ERα in memory in ageing females in the absence of circulating oestrogens. Unliganded ERα has increased interaction with the ubiquitin ligase, C-terminus of Hsc-70 interacting protein (CHIP), leading to increased degradation of the receptor. In our first experiment, we tested the hypothesis that midlife oestradiol exposure in ovariectomised rats results in decreased interaction between CHIP and hippocampal ERα, leading to increased levels of ERα. Middle-aged rats were ovariectomised and received oestradiol or vehicle implants. After 40 days, implants were removed. One month later, rats were killed and hippocampi were processed for whole protein western blotting and co-immunoprecipitation, in which ERα was immunoprecipitated from lysate. As expected, ERα protein expression was increased in rats previously treated with oestradiol compared to vehicle-treated rats. In rats treated with oestradiol, there was a decrease in CHIP-ERα interaction, suggesting that previous oestradiol treatment reduces interaction, slowing the degradation of ERα. In a second experiment, we determined the impact on memory of antagonism of ER in the absence of circulating oestrogens. Rats were ovariectomised and implanted with oestradiol capsules. Capsules were removed after 40 days. Rats received chronic i.c.v. infusion of ER antagonist, ICI 182 780, or artificial cerebrospinal fluid vehicle and were tested on a spatial memory radial-maze task. Rats treated with ICI 182 780 had significantly worse performance (more errors). These experiments provide evidence that previous midlife oestradiol treatment maintains hippocampal ERα by decreasing its interaction with CHIP and that activation of these receptors provides cognitive benefits in the absence of circulating oestrogens.
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Affiliation(s)
- K L Black
- Program in Neuroscience, Tulane University, New Orleans, LA, USA
- Brain Institute, Tulane University, New Orleans, LA, USA
| | - C F Witty
- Program in Neuroscience, Tulane University, New Orleans, LA, USA
| | - J M Daniel
- Program in Neuroscience, Tulane University, New Orleans, LA, USA.
- Brain Institute, Tulane University, New Orleans, LA, USA.
- Department of Psychology, Tulane University, New Orleans, LA, USA.
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Garcia-Martinez V, Lopez Sanchez C, Hamed W, Hamed W, Hsu JH, Ferrer-Lorente R, Alshamrani M, Pizzicannella J, Vindis C, Badi I, Korte L, Voellenkle C, Niculescu LS, Massaro M, Babaeva AR, Da Silva F, Woudstra L, Berezin A, Bae MK, Del Giudice C, Bageghni SA, Krobert K, Levay M, Vignier N, Ranieri A, Magenta A, Orlandi A, Porro B, Jeon ES, Omori Y, Herold J, Barnett GA, Grochot-Przeczek A, Korpisalo P, Deffge C, Margariti A, Rong W, Maring JA, Gambardella J, Mitrofan CG, Karpinska O, Morbidelli L, Wilkinson FL, Berezin A, Kostina AS, De Mey JGR, Kumar A, Lupieri A, Pellet-Many C, Stamatiou R, Gromotowicz A, Dickhout A, Murina M, Roka-Moiia YM, Malinova L, Diaz-Canestro C, Vigliarolo T, Cuzzocrea S, Szantai A, Medic B, Cassambai S, Korda A, Revnic CR, Borile G, Diokmetzidou A, Murfitt L, Budko A, Fiordelisi A, De Wijs-Meijler DPM, Gevaert AB, Noriega De La Colina A, Benes J, Guillermo Solache Berrocal GSB, Gafarov V, Zhebel VM, Prakaschandra R, Stepien EL, Smith LE, Carluccio MA, Timasheva Y, Paci M, Dorofeyeva NA, Chimed CH, Petelina TI, Sorop O, Genis A, Parepa IR, Tscharre M, Krestjyaninov MV, Maia-Rocha C, Borges L, Sasonko ML, Kapel SS, Stam K, Sommariva E, Stojkovic S, O'reilly J, Chiva-Blanch G, Malinova L, Evtushenko A, Skopal J, Sunderland N, Gegenava T, Charnaia MA, Di Lascio N, Tarvainen SJ, Malandraki-Miller S, Uitterdijk A, Benzoni P, Ruivo E, Humphrey EJ, Arokiaraj MC, Franco D, Garcia-Lopez V, Aranega A, Lopez-Sanchez C, Franco D, Garcia-Lopez V, Aranega A, Garcia-Martinez V, Tayel S, Khader H, El-Helbawy N, Tayel S, Alrefai A, El-Barbary H, Wu JR, Dai ZK, Yeh JL, Sanjurjo-Rodriguez C, Richaud-Patin Y, Blanco FJ, Badimon L, Raya A, Cahill PA, Diomede F, Merciaro I, Trubiani O, Nahapetyan H, Swiader A, Faccini J, Boya P, Elbaz M, Zeni F, Burba I, Bertolotti M, Capogrossi MC, Pompilio G, Raucci A, Widmer-Teske R, Dutzmann J, Bauersachs J, Donde K, Daniel JM, Sedding DG, Simionescu N, Sanda GM, Carnuta MG, Stancu CS, Popescu AC, Popescu MR, Vlad A, Dimulescu DR, Sima AV, Scoditti E, Pellegrino M, Calabriso N, Carluccio MA, Storelli C, De Caterina R, Solodenkova KS, Kalinina EV, Usachiova MN, Lappalainen J, Lee-Rueckert MDEC, Kovanen PT, Biesbroek PS, Emmens RWE, Van Rossum AC, Juffermans LJM, Niessen JWM, Krijnen PAJ, Kremzer A, Samura T, Berezina T, Gronenko E, Kim MK, Park HJ, Bae SK, Sorriento D, Ciccarelli M, Vernieri E, Campiglia P, Trimarco B, Iaccarino G, Hemmings KE, Porter KE, Ainscough JF, Drinkhill MJ, Turner NA, Hiis HG, Cosson MV, Levy FO, Wieland T, Macquart C, Chatzifrangkeskou M, Evans A, Bonne G, Muchir A, Kemp E, Avkiran M, Carlomosti F, D'agostino M, Beji S, Zaccagnini G, Maimone B, Di Stefano V, De Santa F, Cordisco S, Antonini A, Ciarapica R, Dellambra E, Martelli F, Avitabile D, Capogrossi MC, Scioli MG, Bielli A, Agostinelli S, Tarquini C, Tarallo V, De Falco S, Zaninoni A, Fiorelli S, Bianchi P, Teruzzi G, Squellerio I, Turnu L, Lualdi A, Tremoli E, Cavalca V, Lee YJ, Ju ES, Choi JO, Lee GY, Lim BK, Manickam MANOJ, Jung SH, Omiya S, Otsu K, Deffge C, Nowak S, Wagner M, Braun-Dullaeus RC, Kostin S, Daniel JM, Francke A, Subramaniam S, Kanse SM, Al-Lamee K, Schofield CJ, Egginton S, Gershlick AH, Kloska D, Kopacz A, Augustyniak A, Dulak J, Jozkowicz A, Hytonen J, Halonen P, Taavitsainen J, Tarvainen S, Hiltunen T, Liimatainen T, Kalliokoski K, Knuuti J, Yla-Herttuala S, Wagner M, Weinert S, Isermann B, Lee J, Braun-Dullaeus RC, Herold J, Cochrane A, Kelaini S, Bojdo J, Vila Gonzalez M, Hu Y, Grieve D, Stitt AW, Zeng L, Xu Q, Margariti A, Reglin B, Xiang W, Nitzsche B, Maibier M, Pries AR, Vrijsen KR, Chamuleau SAJ, Verhage V, Metz CHG, Lodder K, Van Eeuwijk ECM, Van Dommelen SM, Doevendans PA, Smits AM, Goumans MJ, Sluijter JPG, Sorriento D, Bova M, Loffredo S, Trimarco B, Iaccarino G, Ciccarelli M, Appleby S, Morrell N, Baranowska-Kuczko M, Kloza M, Ambrozewicz E, Kozlowski M, Malinowska B, Kozlowska H, Monti M, Terzuoli E, Ziche M, Mahmoud AM, Jones AM, Wilkinson JA, Romero M, Duarte J, Alexander MY, Kremzer A, Berezina T, Gronenko E, Faggian G, Kostareva AA, Malashicheva AB, Leurgans TM, Nguyen TN, Irmukhamedov A, Riber LP, Mcgeogh R, Comer S, Blanco Fernandez A, Ghigo A, Blaise R, Smirnova NF, Malet N, Vincent P, Limon I, Gayral S, Hirsch E, Laffargue M, Mehta V, Zachary I, Aidonidis I, Kramkowski K, Miltyk W, Kolodziejczyk P, Gradzka A, Szemraj J, Chabielska E, Dijkgraaf I, Bitsch N, Van Hoof S, Verhaegen F, Koenen R, Hackeng TM, Roshchupkin DI, Buravleva KV, Sergienko VI, Zhernossekov DD, Rybachuk VM, Grinenko TV, Furman N, Dolotovskaya P, Shamyunov M, Denisova T, Reiner M, Akhmedov A, Keller S, Miranda M, Briand S, Barile L, Kullak-Ublick G, Luscher T, Camici G, Guida L, Magnone M, Ameri P, Lazzarini E, Fresia C, Bruzzone S, Zocchi E, Di Paola R, Cordaro M, Crupi R, Siracusa R, Campolo M, Bruschetta G, Fusco R, Pugliatti P, Esposito E, Paloczi J, Ruivo E, Gaspar R, Dinnyes A, Kobolak J, Ferdinandy P, Gorbe A, Todorovic Z, Krstic D, Savic Vujovic K, Jovicic D, Basta Jovanovic G, Radojevic Skodric S, Prostran M, Dean S, Mee CJ, Harvey KL, Hussain A, Pena C, Paltineanu B, Voinea S, Revnic F, Ginghina C, Zaglia T, Ceriotti P, Campo A, Carullo P, Armani A, Coppini R, Vida V, Olivotto I, Stellin G, Rizzuto R, De Stefani D, Sandri M, Catalucci D, Mongillo M, Soumaka E, Kloukina I, Tsikitis M, Makridakis M, Varela A, Davos C, Vlachou A, Capetanaki Y, Iqbal MM, Bennett H, Davenport B, Pinali C, Cooper G, Cartwright E, Kitmitto A, Strutynska NA, Mys LA, Sagach VF, Franco A, Sorriento D, Trimarco B, Iaccarino G, Ciccarelli M, Verzijl A, Stam K, Van Duin R, Reiss IKM, Duncker DJ, Merkus D, Shakeri H, Orije M, Leloup AJ, Van Hove CE, Van Craenenbroeck EM, De Meyer GRY, Vrints CJ, Lemmens K, Desjardins-Creapeau L, Wu R, Lamarre-Cliche M, Larochelle P, Bherer L, Girouard H, Melenovsky M, Kvasilova A, Benes J, Ruskova K, Sedmera D, Ana Barral ABV, Martin Fernandez M, Pablo Roman Garcia PRG, Juan Carlos Llosa JCLL, Manuel Naves Diaz MND, Cesar Moris CM, Jorge B Cannata-Andia JBCA, Isabel Rodriguez IR, Voevoda M, Gromova E, Maximov V, Panov D, Gagulin I, Gafarova A, Palahniuk H, Pashkova IP, Zhebel NV, Starzhynska OL, Naidoo DP, Rawojc K, Enguita FJ, Grudzien G, Cordwell SJ, White MY, Massaro M, Scoditti E, Calabriso N, Pellegrino M, Martinelli R, Gatta V, De Caterina R, Nasibullin TR, Erdman VV, Tuktarova IA, Mustafina OE, Hyttinen J, Severi S, Vorobyov GG, Sagach VF, Batmyagmar KH, Lkhagvasuren Z, Gapon LI, Musikhina NA, Avdeeva KS, Dyachkov SM, Heinonen I, Van Kranenburg M, De Beer VJ, Octavia Y, Van Geuns RJ, Van Den Meiracker AH, Van Der Velden J, Merkus D, Duncker DJ, Everson FP, Ogundipe T, Grandjean T, De Boever P, Goswami N, Strijdom H, Suceveanu AI, Suceveanu AP, Mazilu L, Tofoleanu DE, Catrinoiu D, Rohla M, Hauser C, Huber K, Wojta H, Weiss TW, Melnikova MA, Olezov NV, Gimaev RH, Khalaf H, Ruzov VI, Adao R, Mendes-Ferreira P, Santos-Ribeiro D, Rademaker M, Leite-Moreira AF, Bras-Silva C, Alvarenga LAA, Falcao RSP, Dias RR, Lacchini S, Gutierrez PS, Michel JB, Gurfinkel YUI, Atkov OYU, Teichert M, Korn C, Mogler C, Hertel S, Arnold C, Korff T, Augustin HG, Van Duin RWB, De Wijs-Meijler DPM, Verzijl A, Duncker DJ, Merkus D, D'alessandra Y, Farina FM, Casella M, Catto V, Carbucicchio C, Dello Russso A, Stadiotti I, Brambilla S, Chiesa M, Giacca M, Colombo GI, Pompilio G, Tondo C, Ahlin F, Andric T, Tihanyi D, Wojta J, Huber K, O'connell E, Butt A, Murphy L, Pennington S, Ledwidge M, Mcdonald K, Baugh J, Watson C, Suades R, Crespo J, Estruch R, Badimon L, Dyachenko A, Ryabukho V, Evtushenko V, Saushkina YU, Lishmanov YU, Smyshlyaev K, Bykov A, Popov S, Pavlyukova E, Anfinogenova Y, Szigetfu E, Kapornai B, Forizs E, Jenei ZS, Nagy Z, Merkely B, Zima E, Cai A, Dworakowski R, Gibbs T, Piper S, Jegard N, Mcdonagh T, Gegenava M, Dementieva II, Morozov YUA, Barsanti C, Stea F, Lenzarini F, Kusmic C, Faita F, Halonen PJ, Puhakka PH, Hytonen JP, Taavitsainen JM, Yla-Herttuala S, Supit EA, Carr CA, Groenendijk BCW, Gorsse-Bakker C, Panasewicz A, Sneep S, Tempel D, Van Der Giessen WJ, Duncker DJ, Rys J, Daraio C, Dell'era P, Paloczi J, Pigler J, Eder A, Ferdinandy P, Eschenhagen T, Gorbe A, Mazo MM, Amdursky N, Peters NS, Stevens MM, Terracciano CM. Poster session 2Morphogenetic mechanisms290MiR-133 regulates retinoic acid pathway during early cardiac chamber specification291Bmp2 regulates atrial differentiation through miR-130 during early heart looping formationDevelopmental genetics294Association of deletion allele of insertion/deletion polymorphism in alpha 2B adrenoceptor gene and hypertension with or without type 2 diabetes mellitus295Association of G1359A polymorphism of the endocannabinoid type 1 receptor (CNR1) with coronary artery disease (CAD) with type 2 diabetes mellitusCell growth, differentiation and stem cells - Vascular298Gamma-secretase inhibitor prevents proliferation and migration of ductus arteriosus smooth muscle cells: a role of Notch signaling in postnatal closure of ductus arteriosus299Mesenchymal stromal-like cells (MLCs) derived from induced pluripotent stem (iPS) cells: a promising therapeutic option to promote neovascularization300Sonic Hedgehog promotes mesenchymal stem cell differentiation to vascular smooth muscle cells in cardiovacsular disease301Proinflammatory cytokine secretion and epigenetic modification in endothelial cells treated LPS-GinfivalisCell death and apoptosis - Vascular304Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipidsTranscriptional control and RNA species - Vascular307MicroRNA-34a role in vascular calcification308Local delivery of a miR-146a inhibitor utilizing a clinically applicable approach attenuates neointima formation after vascular injury309Long noncoding RNA landscape of hypoxic endothelial cells310Specific circulating microRNAs levels associate with hypertension, hyperglycemia and dysfunctional HDL in acute coronary syndrome patientsCytokines and cellular inflammation - Vascular313Phosphodiesterase5A up-regulation in vascular endothelium under pro-inflammatory conditions: a newly disclosed anti-inflammatory activity for the omega-3polyunsaturated aatty acid docosahexaenoic acid314Cardiovascular risk modifying with extra-low dose anticytokine drugs in rhematoid arthritis315Conversion of human M-CSF macrophages into foam cells reduces their proinflammatory responses to classical M1-polarizing activation316Lymphocytic myocarditis coincides with increased plaque inflammation and plaque hemorrhage in coronary arteries, facilitating myocardial infarction317Serum osteoprotegerin level predictsdeclined numerous of circulating endothelial- derived and mononuclear-derived progenitor cells in patients with metabolic syndromeGrowth factors and neurohormones - Vascular320Effect of gastrin-releasing peptide (GRP) on vascular inflammationSignal transduction - Heart323A new synthetic peptide regulates hypertrophy in vitro through means of the inhibition of nfkb324Inducible fibroblast-specific knockout of p38 alpha map kinase is cardioprotective in a mouse model of isoproterenol-induced cardiac hypertrophy325Regulation of beta-adrenoceptor-evoked inotropic responses by inhibitory G protein, adenylyl cyclase isoforms 5 and 6 and phosphodiesterases326Binding to RGS3 and stimulation of M2 muscarinic acetylcholine receptors modulates the substrate specificity of p190RhoGAP in cardiac myocytes327Cardiac regulation of post-translational modifications, parylation and deacetylation in LMNA dilated cardiomyopathy mouse model328Beta-adrenergic regulation of the b56delta/pp2a holoenzyme in cardiac myocytes through b56delta phosphorylation at serine 573Nitric oxide and reactive oxygen species - Vascular331Oxidative stress-induced miR-200c disrupts the regulatory loop among SIRT1, FOXO1 and eNOS332Antioxidant therapy prevents oxidative stress-induced endothelial dysfunction and Enhances Wound Healing333Morphological and biochemical characterization of red blood cell in coronary artery diseaseCytoskeleton and mechanotransduction - Heart336Novel myosin activator, JSH compounds, increased myocardial contractility without chronotropic effect in ratsExtracellular matrix and fibrosis - Vascular339Ablation of Toll-like receptor 9 causes cardiac rupture after myocardial infarction by attenuating proliferation and differentiation of cardiac fibroblasts340Altered vascular remodeling in the mouse hind limb ischemia model in Factor VII activating protease (FSAP) deficiencyVasculogenesis, angiogenesis and arteriogenesis343Pro-angiogenic effects of proly-hydroxylase inhibitors and their potential for use in a novel strategy of therapeutic angiogenesis for coronary total occlusion344Nrf2 drives angiogenesis in transcription-independent manner: new function of the master regulator of oxidative stress response345Angiogenic gene therapy, despite efficient vascular growth, is not able to improve muscle function in normoxic or chronically ischemic rabbit hindlimbs -role of capillary arterialization and shunting346Effect of PAR-1 inhibition on collateral vessel growth in the murine hind limb model347Quaking is a key regulator of endothelial cell differentiation, neovascularization and angiogenesis348"Emerging angiogenesis" in the chick chorioallantoic membrane (CAM). An in vivo study349Exosomes from cardiomyocyte progenitor cells and mesenchymal stem cells stimulate angiogenesis in vitro and in vivo via EMMPRINEndothelium352Reciprocal regulation of GRK2 and bradykinin receptor stimulation modulate Ca2+ intracellular level in endothelial cells353The roles of bone morphogenetic proteins 9 and 10 in endothelial inflammation and atherosclerosis354The contribution of GPR55 to the L-alpha-lysophosphatidylinositol-induced vasorelaxation in isolated human pulmonary arteries355The endothelial protective ACE inhibitor Zofenoprilat exerts anti-inflammatory activities through H2S production356A new class of glycomimetic drugs to prevent free fatty acid-induced endothelial dysfunction357Endothelial progenitor cells to apoptotic endothelial cell-derived microparticles ration differentiatesas preserved from reduced ejection fractionheart failure358Proosteogenic genes are activated in endothelial cells of patients with thoracic aortic aneurysm359Endothelin ETB receptors mediate relaxing responses to insulin in pericardial resistance arteries from patients with cardiovascular disease (CVD)Smooth muscle and pericytes362CX3CR1 positive myeloid cells regulate vascular smooth muscle tone by inducing calcium oscillations via activation of IP3 receptors363A novel function of PI3Kg on cAMP regulation, role in arterial wall hyperplasia through modulation of smooth muscle cells proliferation364NRP1 and NRP2 play important roles in the development of neointimal hyperplasia in vivo365Azithromycin induces autophagy in aortic smooth muscle cellsCoagulation, thrombosis and platelets368The real time in vivo evaluation of platelet-dependent aldosterone prothrombotic action in mice369Development of a method for in vivo detection of active thrombi in mice370The antiplatelet effects of structural analogs of the taurine chloramine371The influence of heparin anticoagulant drugs on functional state of human platelets372Regulation of platelet aggregation and adenosine diphosphate release by d dimer in acute coronary syndrome (in vitro study)Oxygen sensing, ischaemia and reperfusion375Sirtuin 5 mediates brain injury in a mouse model of cerebral ischemia-reperfusion376Abscisic acid: a new player in cardiomyocyte protection from ischaemia?377Protective effects of ultramicronized palmitoylethanolamide (PEA-um) in myocardial ischaemia and reperfusion injury in vivo378Identification of stem cell-derived cardiomyocytes using cardiac specific markers and additional testing of these cells in simulated ischemia/reperfusion system379Single-dose intravenous metformin treatment could afford significant protection of the injured rat kidney in an experimental model of ischemia-reperfusion380Cardiotoxicity of long acting muscarinic receptor antagonists used for chronic obstructive pulmonary disease381Dependence antioxidant potential on the concentration of amino acids382The impact of ischemia-reperfusion on physiological parameters,apoptosis and ultrastructure of rabbit myocardium with experimental aterosclerosisMitochondria and energetics385MicroRNA-1 dependent regulation of mitochondrial calcium uniporter (MCU) in normal and hypertrophied hearts386Mitochondrial homeostasis and cardioprotection: common targets for desmin and aB-crystallin387Overexpression of mitofusin-2 (Mfn2) and associated mitochondrial dysfunction in the diabetic heart388NO-dependent prevention of permeability transition pore (MPTP) opening by H2S and its regulation of Ca2+ accumulation in rat heart mitochondria389G protein coupled receptor kinase 2 (GRK2) is fundamental in recovering mitochondrial morphology and function after exposure to ionizing radiation (IR)Gender issues392Sex differences in pulmonary vascular control; focus on the nitric oxide pathwayAging395Heart failure with preserved ejection fraction develops when feeding western diet to senescence-accelerated mice396Cardiovascular markers as predictors of cognitive decline in elderly hypertensive patients397Changes in connexin43 in old rats with volume overload chronic heart failureGenetics and epigenetics400Calcium content in the aortic valve is associated with 1G>2G matrix metalloproteinase 1 polymorphism401Neuropeptide receptor gene s (NPSR1) polymorphism and sleep disturbances402Endothelin-1 gene Lys198Asn polymorphism in men with essential hypertension complicated and uncomplicated with chronic heart failure403Association of common polymorphisms of the lipoprotein lipase and pon1 genes with the metabolic syndrome in a sample of community participantsGenomics, proteomics, metabolomics, lipidomics and glycomics405Gene expression quantification using multiplexed color-coded probe pairs to determine RNA content in sporadic cardiac myxoma406Large-scale phosphorylation study of the type 2 diabetic heart subjected to ischemia / reperfusion injury407Transcriptome-based identification of new anti-inflammatory properties of the olive oil hydroxytyrosol in vascular endothelial cell under basal and proinflammatory conditions408Gene polymorphisms combinations and risk of myocardial infarctionComputer modelling, bioinformatics and big data411Comparison of the repolarization reserve in three state-of-the-art models of the human ventricular action potentialMetabolism, diabetes mellitus and obesity414Endothelial monocyte-activating polypeptide-II improves heart function in type -I Diabetes mellitus415Admission glucose level is independent predictor of impaired left ventricular function in patients with acute myocardial infarction: a two dimensional speckle-tracking echocardiography study416Association between biochemical markers of lipid profile and inflammatory reaction and stiffness of the vascular wall in hypertensive patients with abdominal obesity417Multiple common co-morbidities produce left ventricular diastolic dysfunction associated with coronary microvascular dysfunction, oxidative stress and myocardial stiffening418Investigating the cardiovascular effects of antiretroviral drugs in a lean and high fat/sucrose diet rat model of obesity419Statins in the treatment of non-alcoholic steatohepatitis (NASH). Our experience from a 2-year prospective study in Constanta County, Romania420Epicardial adipose tissue as a predictor of cardiovascular outcome in patients with ACS undergoing PCI?Arterial and pulmonary hypertension423Dependence between heart rhythm disorers and ID polymorphism of ACE gene in hypertensive patients424Molecular mechanisms underlying the beneficial effects of Urocortin 2 in pulmonary arterial hypertension425Inhibition of TGf-b axis and action of renin-angiotensin system in human ascending aorta aneurysms426Early signs of microcirculation and macrocirculation abnormalities in prehypertension427Vascular smooth muscle cell-expressed Tie-2 controls vascular tone428Cardiac and vascular remodelling in the development of chronic thrombo-embolic pulmonary hypertension in a novel swine modelBiomarkers431Arrhythmogenic cardiomyopathy: a new, non invasive biomarker432Can circulating microRNAs distinguish type 1 and type 2 myocardial infarction?433Design of a high-throughput multiplex proteomics assay to identify left ventricular diastolic dysfunction in diabetes434Monocyte-derived and P-selectin-carrying microparticles are differently modified by a low fat diet in patients with cardiovascular risk factors who will and who will not develop a cardiovascular event435Red blood cell distribution width assessment by polychromatic interference microscopy of thin films in chronic heart failure436Invasive and noninvasive evaluation of quality of radiofrequency-induced cardiac denervation in patients with atrial fibrillation437The effect of therapeutic hypothermia on the level of brain derived neurotrophic factor (BDNF) in sera following cardiopulmonary resustitation438Novel biomarkers to predict outcome in patients with heart failure and severe aortic stenosis439Biological factors linking depression and anxiety to cardiovascular disease440Troponins and myoglobin dynamic at coronary arteries graftingInvasive, non-invasive and molecular imaging443Diet composition effects on the genetic typing of the mouse ob mutation: a micro-ultrasound characterization of cardiac function, macro and micro circulation and liver steatosis444Characterization of pig coronary and rabbit aortic lesions using IV-OCT quantitative analysis: correlations with histologyGene therapy and cell therapy447Enhancing the survival and angiogenic potential of mouse atrial mesenchymal cells448VCAM-1 expression in experimental myocardial infarction and its relation to bone marrow-derived mononuclear cell retentionTissue engineering451Advanced multi layered scaffold that increases the maturity of stem cell-derived human cardiomyocytes452Response of engineered heart tissue to simulated ischemia/reperfusion in the presence of acute hyperglycemic conditions453Serum albumin hydrogels prevent de-differentiation of neonatal cardiomyocytes454A novel paintbrush technique for transfer of low viscosity ultraviolet light curable cyan methacrylate on saline immersed in-vitro sheep heart. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bassey-Archibong BI, Kwiecien JM, Milosavljevic SB, Hallett RM, Rayner LGA, Erb MJ, Crawford-Brown CJ, Stephenson KB, Bédard PA, Hassell JA, Daniel JM. Kaiso depletion attenuates transforming growth factor-β signaling and metastatic activity of triple-negative breast cancer cells. Oncogenesis 2016; 5:e208. [PMID: 26999717 PMCID: PMC4815049 DOI: 10.1038/oncsis.2016.17] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/01/2016] [Accepted: 02/03/2016] [Indexed: 01/06/2023] Open
Abstract
Triple-negative breast cancers (TNBCs) represent a subset of breast tumors that are highly aggressive and metastatic, and are responsible for a disproportionate number of breast cancer-related deaths. Several studies have postulated a role for the epithelial-to-mesenchymal transition (EMT) program in the increased aggressiveness and metastatic propensity of TNBCs. Although EMT is essential for early vertebrate development and wound healing, it is frequently co-opted by cancer cells during tumorigenesis. One prominent signaling pathway involved in EMT is the transforming growth factor-β (TGFβ) pathway. In this study, we report that the novel POZ-ZF transcription factor Kaiso is highly expressed in TNBCs and correlates with a shorter metastasis-free survival. Notably, Kaiso expression is induced by the TGFβ pathway and silencing Kaiso expression in the highly invasive breast cancer cell lines, MDA-MB-231 (hereafter MDA-231) and Hs578T, attenuated the expression of several EMT-associated proteins (Vimentin, Slug and ZEB1), abrogated TGFβ signaling and TGFβ-dependent EMT. Moreover, Kaiso depletion attenuated the metastasis of TNBC cells (MDA-231 and Hs578T) in a mouse model. Although high Kaiso and high TGFβR1 expression is associated with poor overall survival in breast cancer patients, overexpression of a kinase-active TGFβR1 in the Kaiso-depleted cells was insufficient to restore the metastatic potential of these cells, suggesting that Kaiso is a key downstream component of TGFβ-mediated pro-metastatic responses. Collectively, these findings suggest a critical role for Kaiso in TGFβ signaling and the metastasis of TNBCs.
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Affiliation(s)
| | - J M Kwiecien
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Neurosurgery and Paediatric Neurosurgery, Medical University of Lublin, Lublin, Poland
| | - S B Milosavljevic
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - R M Hallett
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - L G A Rayner
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - M J Erb
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | | | - K B Stephenson
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - P-A Bédard
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - J A Hassell
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - J M Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
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Pierre CC, Longo J, Bassey-Archibong BI, Hallett RM, Milosavljevic S, Beatty L, Hassell JA, Daniel JM. Methylation-dependent regulation of hypoxia inducible factor-1 alpha gene expression by the transcription factor Kaiso. Biochim Biophys Acta 2015; 1849:1432-41. [PMID: 26514431 DOI: 10.1016/j.bbagrm.2015.10.018] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 10/01/2015] [Accepted: 10/23/2015] [Indexed: 01/19/2023]
Abstract
Low oxygen tension (hypoxia) is a common characteristic of solid tumors and strongly correlates with poor prognosis and resistance to treatment. In response to hypoxia, cells initiate a cascade of transcriptional events regulated by the hypoxia inducible factor-1 (HIF-1) heterodimer. Since the oxygen-sensitive HIF-1α subunit is stabilized during hypoxia, it functions as the regulatory subunit of the protein. To date, while the mechanisms governing HIF-1α protein stabilization and function have been well studied, those governing HIF1A gene expression are not fully understood. However, recent studies have suggested that methylation of a HIF-1 binding site in the HIF1A promoter prevents its autoregulation. Here we report that the POZ-ZF transcription factor Kaiso modulates HIF1A gene expression by binding to the methylated HIF1A promoter in a region proximal to the autoregulatory HIF-1 binding site. Interestingly, Kaiso's regulation of HIF1A occurs primarily during hypoxia, which is consistent with the finding that Kaiso protein levels peak after 4 h of hypoxic incubation and return to normoxic levels after 24 h. Our data thus support a role for Kaiso in fine-tuning HIF1A gene expression after extended periods of hypoxia.
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Affiliation(s)
- Christina C Pierre
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Joseph Longo
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | | | - Robin M Hallett
- Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada
| | | | - Laura Beatty
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - John A Hassell
- Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada.
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Pierre CC, Longo J, Mavor M, Milosavljevic SB, Chaudhary R, Gilbreath E, Yates C, Daniel JM. Kaiso overexpression promotes intestinal inflammation and potentiates intestinal tumorigenesis in Apc(Min/+) mice. Biochim Biophys Acta Mol Basis Dis 2015; 1852:1846-55. [PMID: 26073433 DOI: 10.1016/j.bbadis.2015.06.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 05/21/2015] [Accepted: 06/08/2015] [Indexed: 02/07/2023]
Abstract
Constitutive Wnt/β-catenin signaling is a key contributor to colorectal cancer (CRC). Although inactivation of the tumor suppressor adenomatous polyposis coli (APC) is recognized as an early event in CRC development, it is the accumulation of multiple subsequent oncogenic insults facilitates malignant transformation. One potential contributor to colorectal carcinogenesis is the POZ-ZF transcription factor Kaiso, whose depletion extends lifespan and delays polyp onset in the widely used Apc(Min/+) mouse model of intestinal cancer. These findings suggested that Kaiso potentiates intestinal tumorigenesis, but this was paradoxical as Kaiso was previously implicated as a negative regulator of Wnt/β-catenin signaling. To resolve Kaiso's role in intestinal tumorigenesis and canonical Wnt signaling, we generated a transgenic mouse model (Kaiso(Tg/+)) expressing an intestinal-specific myc-tagged Kaiso transgene. We then mated Kaiso(Tg/+) and Apc(Min/+) mice to generate Kaiso(Tg/+):Apc(Min/+) mice for further characterization. Kaiso(Tg/+):Apc(Min/+) mice exhibited reduced lifespan and increased polyp multiplicity compared to Apc(Min/+) mice. Consistent with this murine phenotype, we found increased Kaiso expression in human CRC tissue, supporting a role for Kaiso in human CRC. Interestingly, Wnt target gene expression was increased in Kaiso(Tg/+):Apc(Min/+) mice, suggesting that Kaiso's function as a negative regulator of canonical Wnt signaling, as seen in Xenopus, is not maintained in this context. Notably, Kaiso(Tg/+):Apc(Min/+) mice exhibited increased inflammation and activation of NFκB signaling compared to their Apc(Min/+) counterparts. This phenotype was consistent with our previous report that Kaiso(Tg/+) mice exhibit chronic intestinal inflammation. Together our findings highlight a role for Kaiso in promoting Wnt signaling, inflammation and tumorigenesis in the mammalian intestine.
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Affiliation(s)
- Christina C Pierre
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Joseph Longo
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Meaghan Mavor
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | | | - Roopali Chaudhary
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Ebony Gilbreath
- College of Veterinary Medicine, Nursing and Allied Health, Tuskegee University, Tuskegee, AL, USA
| | - Clayton Yates
- Department of Biology, Center for Cancer Research, Tuskegee University, Tuskegee, AL, USA
| | - Juliet M Daniel
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada.
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Bayless DW, Daniel JM. Sex differences in myelin-associated protein levels within and density of projections between the orbital frontal cortex and dorsal striatum of adult rats: implications for inhibitory control. Neuroscience 2015; 300:286-96. [PMID: 26002313 DOI: 10.1016/j.neuroscience.2015.05.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 02/19/2015] [Revised: 05/08/2015] [Accepted: 05/12/2015] [Indexed: 11/19/2022]
Abstract
Impulsive actions and decisions often lead to undesirable outcomes. Lesion and neuroimaging studies have revealed that the orbital frontal cortex (OFC) and dorsal striatum (dSTR) play key roles in inhibitory control. It has been proposed that greater OFC input into the dSTR reflects enhanced top-down cognitive control and less impulsive responding. We previously reported a sex difference in inhibitory control, such that female rats make fewer impulsive errors than do male rats. The goal of the present study was to investigate differences in the OFC and dSTR of young adult male and female rats. In Experiment 1, we measured levels of two myelin-associated proteins, myelin basic protein (MBP) and myelin proteolipid protein (PLP), in the OFC and dSTR. Western blot data revealed that females had significantly higher levels of both MBP and PLP in the OFC but similar levels in the dSTR as compared to males. In Experiment 2, we infused the anterograde tracer, biotinylated dextran amine (BDA), into the OFC and measured the density of BDA in the dSTR. BDA was visualized using histochemistry followed by light microscopy imaging and densitometry analysis. Density of BDA in the dSTR was significantly greater in females as compared to males indicating that the projections from the OFC to dSTR may be greater in females as compared to males. Our results suggest a potential neuroanatomical sex difference that may contribute to the reported differences in inhibitory control levels of male and female rats.
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Affiliation(s)
- D W Bayless
- Department of Psychology, Tulane University, New Orleans, LA 70118, USA.
| | - J M Daniel
- Department of Psychology, Tulane University, New Orleans, LA 70118, USA; Neuroscience Program, Tulane University, New Orleans, LA 70118, USA.
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Bassey BI, Crawford C, Daniel JM. Abstract P1-07-12: Kaiso is a novel regulator of epithelial-to-mesenchymal transition in triple negative breast cancer cells. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p1-07-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction:
Breast cancer (BC) is the most frequent form of female cancer and a principal cause of female deaths worldwide. Most BC deaths are attributed to tumor metastasis to vital organs, and many studies have proposed a role for epithelial-to-mesenchymal transition (EMT) in BC metastasis especially the Triple Negative BC (TNBC) subtype. This theory is further strengthened by the observation that many triple-negative tumors display low E-cadherin expression, which is a hallmark of EMT. The TNBC subtype lack expression of the estrogen-receptor (ER), progesterone-receptor (PR) and human epidermal growth factor receptor-2, HER2. These tumors are highly aggressive with limited treatment options or targeted-therapies, and consequently TNBC patients have poor outcomes. Recently, increased nuclear expression of the transcription factor Kaiso was significantly correlated with high grade, BRCA1-related and basal/TNBCs. Kaiso is a novel transcription factor that we originally identified as a binding partner of p120-catenin (p120), a Src Kinase substrate and regulator of E-cadherin stability and turnover.
Rationale and Research Objective:
Though not much is known about the function of Kaiso in breast tumor progression and metastasis, Kaiso has been implicated in regulating E-cadherin expression, which raised the possibility that Kaiso might play a role in EMT. Thus we sought to elucidate the role of Kaiso in EMT and TNBC metastasis.
Results:
To achieve this goal, we created a stable Kaiso-depleted TNBC cell line (MDA-MB-231) to analyze the consequences of Kaiso-depletion on features attributed to metastasis, using immunoblot, wound healing and Matrigel invasion assays among other techniques. Interestingly, Kaiso-depletion led to reduced transcript and expression levels of the EMT markers Snail, Slug, ZEB1/2, TGFbRII, vimentin, and up-regulation of E-cadherin. Kaiso-depleted MDA-MB-231 cells also showed a gradual change in morphology from a mesenchymal to an epithelial phenotype referred to as mesenchymal to epithelial transition (MET). Loss of Kaiso further resulted in reduced cell motility and invasion. Ongoing studies seek to evaluate the effect of Kaiso-depletion on metastasis in vivo. Since there is evidence that the TGFβ signaling pathway drives EMT, and Kaiso-depletion resulted in reduced transcript levels of TGFβRII, future studies will determine if Kaiso plays a role in EMT/MET via promotion of the TGFβ signaling pathway.
Overall Significance:
Our study is the first to demonstrate a link between Kaiso and EMT/MET of TNBC cells and suggest that Kaiso may be a novel regulator of EMT in TNBC. Consequently, Kaiso might be useful as a therapeutic or prognostic tool in the treatment of TNBC.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P1-07-12.
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Affiliation(s)
- BI Bassey
- McMaster University, Hamilton, ON, Canada
| | - C Crawford
- McMaster University, Hamilton, ON, Canada
| | - JM Daniel
- McMaster University, Hamilton, ON, Canada
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Longo J, Robinson S, Chaudhary R, Daniel JM. Abstract 1817: Expression of the Kaiso-binding partner Znf131 negatively correlates with cell proliferation in murine intestinal and human breast tumor tissues. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-1817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Znf131 is a relatively uncharacterized member of the POZ-ZF family of transcription factors with suspected roles in both vertebrate development and carcinogenesis. Previous studies from our lab identified Znf131 as a specific binding partner of another POZ-ZF protein, Kaiso, which has been implicated as a regulator of the canonical Wnt signaling pathway. Our lab successfully generated an intestinal-specific Kaiso overexpressing (KaisoTg/+) mouse model, which was found to exhibit enlarged crypts and mild hyperplasia in the small intestine. Several lines of evidence implicate Znf131 in cell proliferation, but whether Znf131 expression increases or decreases cell proliferation has yet to be elucidated. To determine whether Znf131 expression correlates with increased proliferation in hyperplastic KaisoTg/+ crypts, the expression and localization of Znf131 was correlated with the proliferation marker Ki-67 in KaisoTg/+ and wildtype (WT) mouse intestinal tissues. Znf131 nuclear expression was localized to the Paneth cell region of the crypts in both the KaisoTg/+ and WT small intestinal tissues, but decreased Znf131 expression was observed in the KaisoTg/+ model. Intriguingly, Ki-67 was localized to the progenitor cell region of the crypts and was excluded from Znf131-positive nuclei. In contrast to our hypothesis, these results suggest that Znf131 negatively correlates with cell proliferation. Since Znf131 has also been implicated as a regulator of ERα, we repeated these experiments using human breast tumor tissues to determine whether the observed results were tissue specific. We detected decreased nuclear expression of Znf131 in breast tumor tissues compared to matched normal tissues, and we observed a negative correlation between the nuclear expression of Znf131 and the histologic grade and stage of the tumor. Collectively, our results from both murine intestinal and human breast tumor tissues suggest a negative correlation between Znf131 nuclear expression and cell proliferation and raise the possibility that Znf131 may act as a tumor suppressor.
Citation Format: Joseph Longo, Shaiya Robinson, Roopali Chaudhary, Juliet M. Daniel. Expression of the Kaiso-binding partner Znf131 negatively correlates with cell proliferation in murine intestinal and human breast tumor tissues. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 1817. doi:10.1158/1538-7445.AM2013-1817
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Donaldson NS, Pierre CC, Anstey MI, Robinson SC, Weerawardane SM, Daniel JM. Kaiso represses the cell cycle gene cyclin D1 via sequence-specific and methyl-CpG-dependent mechanisms. PLoS One 2012; 7:e50398. [PMID: 23226276 PMCID: PMC3511522 DOI: 10.1371/journal.pone.0050398] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [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: 06/14/2012] [Accepted: 10/19/2012] [Indexed: 11/19/2022] Open
Abstract
Kaiso is the first member of the POZ family of zinc finger transcription factors reported to bind DNA with dual-specificity in both a sequence- and methyl-CpG-specific manner. Here, we report that Kaiso associates with and regulates the cyclin D1 promoter via the consensus Kaiso binding site (KBS), and also via methylated CpG-dinucleotides. The methyl-CpG sites appear critical for Kaiso binding to the cyclin D1 promoter, while a core KBS in close proximity to the methyl-CpGs appears to stabilize Kaiso DNA binding. Kaiso's binding to both sites was demonstrated in vitro using electrophoretic mobility shift assays (EMSA) and in vivo using Chromatin immunoprecipitation (ChIP). To elucidate the functional relevance of Kaiso's binding to the cyclin D1 promoter, we assessed Kaiso overexpression effects on a minimal cyclin D1 promoter-reporter that contains both KBS and CpG sites. Kaiso repressed this minimal cyclin D1 promoter-reporter in a dose-dependent manner and transcriptional repression occurred in a KBS-specific and methyl-CpG-dependent manner. Collectively our data validates cyclin D1 as a Kaiso target gene and demonstrates a mechanism for Kaiso binding and regulation of the cyclin D1 promoter. Our data also provides a mechanistic basis for how Kaiso may regulate other target genes whose promoters possess both KBS and methyl-CpG sites.
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Affiliation(s)
| | | | | | | | | | - Juliet M. Daniel
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
- * E-mail:
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Yusuf D, Butland SL, Swanson MI, Bolotin E, Ticoll A, Cheung WA, Zhang XYC, Dickman CTD, Fulton DL, Lim JS, Schnabl JM, Ramos OHP, Vasseur-Cognet M, de Leeuw CN, Simpson EM, Ryffel GU, Lam EWF, Kist R, Wilson MSC, Marco-Ferreres R, Brosens JJ, Beccari LL, Bovolenta P, Benayoun BA, Monteiro LJ, Schwenen HDC, Grontved L, Wederell E, Mandrup S, Veitia RA, Chakravarthy H, Hoodless PA, Mancarelli MM, Torbett BE, Banham AH, Reddy SP, Cullum RL, Liedtke M, Tschan MP, Vaz M, Rizzino A, Zannini M, Frietze S, Farnham PJ, Eijkelenboom A, Brown PJ, Laperrière D, Leprince D, de Cristofaro T, Prince KL, Putker M, del Peso L, Camenisch G, Wenger RH, Mikula M, Rozendaal M, Mader S, Ostrowski J, Rhodes SJ, Van Rechem C, Boulay G, Olechnowicz SWZ, Breslin MB, Lan MS, Nanan KK, Wegner M, Hou J, Mullen RD, Colvin SC, Noy PJ, Webb CF, Witek ME, Ferrell S, Daniel JM, Park J, Waldman SA, Peet DJ, Taggart M, Jayaraman PS, Karrich JJ, Blom B, Vesuna F, O'Geen H, Sun Y, Gronostajski RM, Woodcroft MW, Hough MR, Chen E, Europe-Finner GN, Karolczak-Bayatti M, Bailey J, Hankinson O, Raman V, LeBrun DP, Biswal S, Harvey CJ, DeBruyne JP, Hogenesch JB, Hevner RF, Héligon C, Luo XM, Blank MC, Millen KJ, Sharlin DS, Forrest D, Dahlman-Wright K, Zhao C, Mishima Y, Sinha S, Chakrabarti R, Portales-Casamar E, Sladek FM, Bradley PH, Wasserman WW. The transcription factor encyclopedia. Genome Biol 2012; 13:R24. [PMID: 22458515 PMCID: PMC3439975 DOI: 10.1186/gb-2012-13-3-r24] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/19/2012] [Accepted: 03/29/2012] [Indexed: 12/20/2022] Open
Abstract
Here we present the Transcription Factor Encyclopedia (TFe), a new web-based compendium of mini review articles on transcription factors (TFs) that is founded on the principles of open access and collaboration. Our consortium of over 100 researchers has collectively contributed over 130 mini review articles on pertinent human, mouse and rat TFs. Notable features of the TFe website include a high-quality PDF generator and web API for programmatic data retrieval. TFe aims to rapidly educate scientists about the TFs they encounter through the delivery of succinct summaries written and vetted by experts in the field. TFe is available at http://www.cisreg.ca/tfe.
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Affiliation(s)
- Dimas Yusuf
- Department of Medical Genetics, Faculty of Medicine, Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, University of British Columbia, Vancouver, Canada
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Stelly CE, Cronin J, Daniel JM, Schrader LA. Long-term oestradiol treatment enhances hippocampal synaptic plasticity that is dependent on muscarinic acetylcholine receptors in ovariectomised female rats. J Neuroendocrinol 2012; 24:887-96. [PMID: 22313316 DOI: 10.1111/j.1365-2826.2012.02287.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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] [Indexed: 01/24/2023]
Abstract
Short-term oestradiol treatment modulates hippocampus-dependent memory and synaptic plasticity in the hippocampus. Long-term oestradiol treatment can also enhance hippocampus- dependent memory, although the effects of long-term oestradiol treatment on synaptic plasticity are unknown. We investigated the effects of long-term oestradiol treatment on synaptic plasticity at the Schaeffer Collateral/CA1 synapse in 8-month-old female rats. In addition, we determined the role of endogenous activation of muscarinic acetylcholine receptors (mAChRs) in synaptic transmission and plasticity using scopolamine (1 μm), an antagonist of mAChRs. Hippocampus slices from ovariectomised rats that were treated with oestradiol-containing capsules for 5 months were compared with slices from ovariectomised rats that received cholesterol-containing capsules. Unexpectedly, scopolamine application significantly increased the baseline field excitatory postsynaptic potentials (fEPSP) and decreased paired pulse facilitation (PPF) in slices from cholesterol-treated rats. Baseline fEPSPs and PPF were not significantly modulated in slices from oestradiol-treated rats by scopolamine. Slices from oestradiol-treated rats showed enhanced long-term potentiation relative to slices from cholesterol-treated rats. Scopolamine significantly reduced the magnitude of plasticity in slices from oestradiol-treated rats. Taken together, these results suggest that mAChRs have a significant effect on baseline synaptic transmission through a decrease in the probability of glutamate release in slices from cholesterol-treated rats. Long-term oestradiol treatment blocks this effect and enhances theta-burst stimulation-induced synaptic plasticity in the middle-aged female rat, and this effect is mediated by activation of mAChRs.
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Affiliation(s)
- C E Stelly
- Neuroscience Program, Tulane University, New Orleans, LA, USA
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Wojtal D, Chaudhary R, Nanan KK, Morone S, Daniel JM. Abstract 1302: Effect of intestinal-specific Kaiso overexpression on the APC MIN/+ mouse colon cancer model. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-1302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The canonical Wnt signaling pathway is a crucial regulator of various cellular processes during embryogenesis but when aberrantly activated, it leads to tumorigenesis. The key downstream effector of the Wnt pathway is the Armadillo protein, β-catenin, which was first characterized as a cytoplasmic cofactor for the transmembrane, cell-cell adhesion tumor suppressor, E-cadherin. Recent evidence from our lab and others indicates that another E-cadherin cofactor, p120ctn and its binding partner, the POZ-ZF transcription factor Kaiso, co-regulate a subset of Wnt/β-catenin target genes and antagonize Wnt signaling. Specifically, using a Xenopus model system, we and others found that Kaiso overexpression rescued the β-catenin-induced duplicate axis phenotype; this implicated Kaiso as a negative regulator of Wnt signaling. However, it remains to be determined whether an analogous antagonistic role for Kaiso is conserved in mammals. Indeed, when Kaiso-null mice (which were viable and had no overt developmental defects or tumors) were crossed with the APCMIN/+ mouse model of colon cancer, the progeny had delayed tumor onset and reduced polyp size. This suggested that Kaiso played a positive role in tumor initiation and possibly cell proliferation in mammals. To resolve this discrepancy, we generated intestine-specific Kaiso overexpressing transgenic mice (KaisoTg/+) for subsequent mating with the APCMIN/+ mouse model of colon cancer. Histological analysis of small and large intestines from KaisoTg/+ and non-Tg mice revealed no gross morphological differences. Immunohistochemical (IHC) and immunofluorescence (IF) staining revealed strong nuclear Kaiso staining in intestinal tissues from KaisoTg/+ mice whereas intestinal tissues from non-Tg mice displayed weak cytoplasmic or no Kaiso staining. We detected no difference in β-Catenin expression levels in tissues from KaisoTg/+ mice and their wildtype littermates. This suggests that Kaiso's regulation of WNT signaling is downstream of its main effector β-Catenin. KaisoTg-APCMIN/+ double mutant mice have been generated and surprisingly they display decreased body size and weight, and have a decreased life span when compared to the parentals (i.e. KaisoTg or APCMIN/+). Current studies are aimed at assessing polyp formation and elucidating the expression levels of p120ctn, β-catenin, E-cadherin and cyclinD1 in the KaisoTg-APCMIN/+ intestines.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 1302. doi:1538-7445.AM2012-1302
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Weerawardane S, Daniel JM. Abstract LB-271: The biological role of the transcription factor Kaiso in breast tumorigenesis. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-lb-271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: The canonical Wnt signalling pathway regulates various cellular processes (e.g. proliferation, differentiation, apoptosis) and leads to tumorigenesis when aberrantly activated. -catenin, the key downstream effector in Wnt signalling, translocates to the nucleus upon Wnt pathway activation, and activates target genes involved in tumorigenesis. The transcription factor Kaiso is a novel BTB/POZ (Broad complex, Tramtrak, Bric à brac/Pox virus and zinc finger) zinc finger (POZ-ZF) protein that specifically interacts with the cell adhesion cofactor p120ctn. Recent studies from our lab and others have revealed that Kaiso negatively regulates the canonical Wnt pathway by repressing activation of Wnt/ -catenin target genes. Some studies implicate Kaiso as a tumor suppressor (decreased expression in breast, ovarian and colon tumors), and others implicate Kaiso in tumor initiation (Kaiso-deficient mice are resistant to intestinal cancer). The goal of this study is to elucidate the biological role of Kaiso in breast tumorigenesis using various cellular assays.
Methods: To assess Kaiso's role in breast cancer, Kaiso was misexpressed in MCF7 (human breast adenocarcinoma) cell lines. Stable Kaiso overexpressing and depleted cell lines were generated and assessed for cell proliferation and cell migration using focus formation, wound healing and matrigel invasion assays. Western blot analysis was performed to assess the effects of Kaiso misexpression on p120 and E-cadherin as well as epithelial-mesenchymal transition markers such as N-cadherin, Snail, Twist and Vimentin. The subcellular localization of Kaiso and its putative target genes in vivo was examined using immunohistochemistry (IHC) analysis of matched pairs of human normal and tumor breast tissue.
Results: Focus formation assays revealed increased transformation by cells over-expressing Kaiso, suggesting an oncogenic role for Kaiso in cell culture. Preliminary wound healing and matrigel assays show increased cell motility and migration respectively in Kaiso over-expressing cells compared to parental control cells, thereby suggesting a role for Kaiso in the epithelial-mesenchymal transition. IHC analysis revealed predominant nuclear Kaiso expression in lobular and ductal breast carcinomas in breast tissues. These data support Kaiso's potential role as an oncogene in human breast cancer.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr LB-271.
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Pierre CC, Beatty LC, Daniel JM. Abstract 1239: The transcription factor Kaiso negatively regulates the hypoxia inducible factor-1 alpha. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-1239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Hypoxia (reduced oxygen levels) is a common characteristic of solid tumors, and is strongly correlated with poor prognosis and resistance to treatment. In response to hypoxia, cells initiate a cascade of transcriptional events regulated by the Hypoxia Inducible Factor 1 (HIF-1) heterodimer. During hypoxia, the oxygen sensitive HIF-1α subunit is stabilized and translocates to the nucleus where it interacts with the HIF-1β subunit to form a functional HIF-1 transcription factor that regulates genes to facilitate cellular adaptation to hypoxia. To date, while the mechanisms governing HIF-1α stabilization and function have been well studied, those governing HIF-1α gene expression are not fully understood. Recent studies have revealed that the transcription factor Kaiso, a member of the POZ-ZF family of transcription factors implicated in tumorigenesis, is aberrantly expressed and mislocalized at the hypoxic core of various tumors. Mounting evidence suggests that, like other POZ-ZF proteins, Kaiso has a role in tumorigenesis. More importantly, the HIF-1α promoter contains several copies of the consensus Kaiso Binding Site (KBS) suggesting that HIF-1α may be a Kaiso target gene. Since HIF-1α is a key regulator of many hypoxia-induced pathways, and Kaiso is aberrantly expressed in hypoxia, some feed-back mechanism may exist between Kaiso and HIF-1α. These studies seek to elucidate the relationship between Kaiso and HIF-1α during the adaptive response to hypoxia.
Methods: Western blot analysis was performed on whole cell lysates harvested from cultured cells that were incubated in hypoxia for varying time periods to compare Kaiso expression levels in these cells. Electrophoretic Mobility Shift Assays (EMSAs) were used to determine the specificity of Kaiso binding to the HIF-1α promoter. To assess the effect of Kaiso on HIF-1α transcription, promoter-reporter assays were performed in cultured cells using a HIF-1α promoter-luciferase construct and a Kaiso expression plasmid.
Results: During hypoxia, Kaiso protein levels steadily decline and are significantly reduced after 24 hours in the MCF7 tumor epithelial cell line. Interestingly, the decrease in Kaiso protein levels is less apparent in the non-tumor MCF10A breast cell line. Kaiso binds 3 of the 6 putative Kaiso binding sites as well as a CpG rich region in the HIF-1α promoter in a methylation-dependent manner. Furthermore, Kaiso represses transcription of the HIF-1α promoter in MCF7, MCF10A and HCT116 cell lines.
Conclusion: These results indicate that Kaiso negatively regulates HIF-1α and thus implicates HIF-1α as a Kaiso target gene. The fluctuation of Kaiso expression during hypoxia suggests that HIF-1 may also regulate Kaiso and that a feedback mechanism may exist between Kaiso and HIF-1α. Ongoing studies are being performed to elucidate the functional interaction between HIF-1α and Kaiso.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 1239.
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Donaldson NS, Nordgaard CL, Pierre CC, Kelly KF, Robinson SC, Swystun L, Henriquez R, Graham M, Daniel JM. Kaiso regulates Znf131-mediated transcriptional activation. Exp Cell Res 2010; 316:1692-705. [PMID: 20303951 DOI: 10.1016/j.yexcr.2010.03.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [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: 10/06/2009] [Revised: 03/01/2010] [Accepted: 03/11/2010] [Indexed: 11/17/2022]
Abstract
Kaiso is a dual-specificity POZ-ZF transcription factor that regulates gene expression by binding to sequence-specific Kaiso binding sites (KBS) or methyl-CpG dinucleotide pairs. Kaiso was first identified as a binding partner for the epithelial cell adhesion regulator p120(ctn). The p120(ctn)/Kaiso interaction is reminiscent of the beta-catenin/TCF interaction and several studies have suggested that Kaiso is a negative regulator of the Wnt/beta-catenin TCF signaling pathway. To gain further insight into Kaiso's function, we performed a yeast two-hybrid screen using the Kaiso POZ domain as bait. This screen identified the POZ-ZF protein, Znf131, as a Kaiso-specific binding partner. GST pull-down assays confirmed that the interaction is mediated via the POZ domain of each protein, and co-immunoprecipitation experiments further supported an in vivo Kaiso-Znf131 interaction. Using a Cyclic Amplification and Selection of Targets (CAST) approach, we identified the 12-base pair DNA palindrome sequence GTCGCR-(X)(n)-YGCGAC as a potential Znf131 binding element (ZBE). In vitro studies using electrophoretic mobility shift assay (EMSA) demonstrated that Znf131 binds the ZBE via its zinc finger domain. Znf131 DNA-binding specificity was confirmed using competition assays and ZBE mutational analyses. An artificial promoter-reporter construct containing four tandem copies of the ZBE was constructed and used to assess Znf131 transcriptional properties. We observed dose-dependent transcriptional activation of this artificial promoter-reporter by Znf131 in both epithelial and fibroblast cells, suggesting that Znf131 is a transcriptional activator. Kaiso overexpression significantly decreased the Znf131-mediated transcriptional activation, and interestingly, co-expression of the Kaiso-specific interaction partner p120(ctn) relieved Kaiso's inhibition of Znf131-mediated transcriptional activation. These findings indicate that Znf131 is a transcriptional activator, a less common function of POZ-ZF proteins, that is negatively regulated by its heterodimerization partner Kaiso.
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Bohacek J, Daniel JM. The ability of oestradiol administration to regulate protein levels of oestrogen receptor alpha in the hippocampus and prefrontal cortex of middle-aged rats is altered following long-term ovarian hormone deprivation. J Neuroendocrinol 2009; 21:640-7. [PMID: 19453823 DOI: 10.1111/j.1365-2826.2009.01882.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [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: 10/20/2022]
Abstract
Beneficial effects of oestrogen administration on cognition are attenuated if treatment is initiated following long-term ovarian hormone deprivation. The mechanisms underlying this attenuation are unknown. The present study aimed to assess the effects of long-term ovarian hormone deprivation on the ability of subsequent oestradiol treatment to regulate oestrogen receptor (ER) alpha and ERbeta, and steroid receptor coactivator (SRC)-1 in the hippocampus and prefrontal cortex of middle-aged rats. In an initial experiment to assess oestradiol regulation of these proteins, 2-month-old rats were ovariectomised and immediately implanted with capsules containing cholesterol or oestradiol. Brains were collected 10 days later. In a second experiment, middle-aged (10-month-old) rats were ovariectomised or underwent sham surgeries. Five months later, sham-operated rats were ovariectomised and received oestradiol implants. Previously ovariectomised rats underwent sham surgeries and received oestradiol or cholesterol implants. Protein levels of ERalpha, ERbeta, and SRC-1 were measured following 10 days of oestradiol treatment using western blotting. In young animals, oestradiol treatment significantly increased ERalpha in the hippocampus and prefrontal cortex relative to control treatment. In middle-aged animals, immediate oestradiol treatment significantly increased ERalpha in hippocampus, but not the prefrontal cortex. However, delayed oestradiol treatment failed to significantly increase ERalpha protein levels in hippocampus, but did so in prefrontal cortex. Levels of ERbeta and SRC-1 were unaffected by oestradiol treatment in either brain area in either of the age groups. These data indicate that prolonged ovarian hormone deprivation alters the ability of subsequent oestradiol replacement to regulate ERalpha protein levels in brain areas important for cognition.
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Affiliation(s)
- J Bohacek
- Program in Neuroscience, Tulane University, New Orleans, LA 70118, USA
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Brown ST, Kelly KF, Daniel JM, Nurse CA. Hypoxia inducible factor (HIF)-2 alpha is required for the development of the catecholaminergic phenotype of sympathoadrenal cells. J Neurochem 2009; 110:622-30. [PMID: 19457096 DOI: 10.1111/j.1471-4159.2009.06153.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The basic helix-loop-helix transcription factor, hypoxia inducible factor (HIF)-2alpha has been implicated in the development of the catecholaminergic phenotype in cells of the sympathoadrenal (SA) lineage; however, the underlying mechanisms and HIF-2alpha targets remain unclear. Using an immortalized rat adrenomedullary chromaffin cell line (MAH cells) derived from a fetal SA progenitor, we examined the role of HIF-2alpha in catecholamine biosynthesis. Chronic hypoxia (2% O(2), 24 h) induced HIF-2alpha in MAH cells but expression of the rate-limiting enzyme, tyrosine hydroxylase (TH) and catecholamine levels were unaltered. Interestingly, HIF-2alpha depleted MAH cells showed dramatically lower (5-12 times) levels of dopamine and noradrenaline compared with wild-type and scrambled controls, even in normoxia (21% O(2)). This was correlated with a marked reduction in the expression of DOPA decarboxylase (DDC) and dopamine beta hydroxylase (DbetaH) but not TH. Chromatin immunoprecipitation assays revealed that HIF-2alpha was bound to the DDC gene promoter which contains two putative hypoxia response elements. These data suggest that a basal level of HIF-2alpha function is required for the normal developmental expression of DDC and DbetaH in SA progenitor cells, and that loss of this function leads to impaired catecholamine biosynthesis.
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Affiliation(s)
- Stephen T Brown
- Department of Biology, McMaster University, Hamilton, Ontario, Canada.
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Bohacek J, Bearl AM, Daniel JM. Long-term ovarian hormone deprivation alters the ability of subsequent oestradiol replacement to regulate choline acetyltransferase protein levels in the hippocampus and prefrontal cortex of middle-aged rats. J Neuroendocrinol 2008; 20:1023-7. [PMID: 18540996 DOI: 10.1111/j.1365-2826.2008.01752.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [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] [Indexed: 11/28/2022]
Abstract
The role of oestrogen replacement therapy in preventing or delaying age-associated cognitive decline is controversial. Therapy success may critically depend on the time of treatment initiation following cessation of ovarian function. The present study aimed to assess, in middle-aged rats, whether the ability of oestradiol to modulate the cholinergic system depends on the timing of treatment initiation following ovariectomy. Using western blotting, protein levels of choline acetyltransferase (ChAT) were measured in the hippocampus and prefrontal cortex (PFC), which are both important areas with respect to cognitive function. In an initial experiment, we established the effects of oestradiol delivered via implanted capsules on ChAT levels in the hippocampus and PFC of young adult animals. In a second experiment, we tested the ability of the same oestradiol treatment paradigm to affect ChAT protein in 15-month-old middle-aged rats that had been ovariectomised either at the age of 10 months or at 15 months. In both experiments, rats were sacrificed 10 days after receiving implants and ChAT protein levels were measured. In both young adult and middle-aged animals, oestradiol treatment initiated immediately after ovariectomy significantly increased ChAT levels in the hippocampus but not in the PFC compared to cholesterol control treatment. However, when oestradiol treatment was initiated 5 months after ovariectomy, it failed to significantly increase ChAT levels in the hippocampus, but did so in the PFC. These data indicate that, after prolonged ovarian hormone deprivation, the ability of subsequent oestradiol treatment to modulate ChAT protein levels is altered in a site-specific manner.
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Affiliation(s)
- J Bohacek
- Program in Neuroscience, Tulane University, New Orleans, LA 70118, USA
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Donaldson NS, Daniel Y, Kelly KF, Graham M, Daniel JM. Nuclear trafficking of the POZ-ZF protein Znf131. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research 2007; 1773:546-55. [PMID: 17306895 DOI: 10.1016/j.bbamcr.2006.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Revised: 12/06/2006] [Accepted: 12/08/2006] [Indexed: 01/21/2023]
Abstract
Znf131 is a member of the BTB/POZ family of transcription factors with roles in development and carcinogenesis. Like many members of this protein family, Znf131 displays robust nuclear localization in cultured cells, but the mechanism(s) of Znf131 nuclear trafficking is unknown. Here, we report the mechanism of Znf131 nuclear localization. Visual inspection of the Znf131 amino acid sequence revealed three basic regions (BR-1, -2 and -3) with the potential to serve as nuclear localization signals (NLS). Of the three basic regions, only BR-1 functioned independently to efficiently target heterologous beta-gal-GFP fusion proteins to HeLa cell nuclei. However, a Znf131 truncation mutant containing BR-2 and BR-3 efficiently targeted heterologous beta-gal-GFP fusion proteins to HeLa cell nuclei. Mutational analysis of full-length GFP-tagged Znf131 revealed that loss of any one BR alone did not prevent Znf131 nuclear localization. This apparent redundancy in NLS activity was due to the fact that intact BR-1 or BR-2 alone could target full-length Znf131 to nuclei. Consequently, simultaneous mutation of BR-1 and BR-2 abolished full-length Znf131 nuclear localization. Therefore, BR-1 and BR-2 are functional NLSs for Znf131 and as such are designated NLS-1 and NLS-2. Finally, wild type Znf131, and not a Znf131 NLS-defective mutant (NLS-1m/NLS-2m) interacted preferentially with the nuclear import receptor Importin-alpha3 in vitro.
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Affiliation(s)
- Nickett S Donaldson
- Department of Biology, LSB-331 McMaster University, 1280 Main Street West Hamilton, Canada ON L8S 4K1
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Daniel JM. Dancing in and out of the nucleus: p120ctn and the transcription factor Kaiso. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research 2007; 1773:59-68. [PMID: 17050009 DOI: 10.1016/j.bbamcr.2006.08.052] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Revised: 08/30/2006] [Accepted: 08/30/2006] [Indexed: 10/24/2022]
Abstract
The catenin p120 (hereafter p120(ctn)) was first identified as a Src kinase substrate and subsequently characterized as an Armadillo catenin member of the cell-cell adhesion cadherin-catenin complex. In the past decade, many studies have revealed roles for p120(ctn) in regulating Rho family GTPase activity and E-cadherin stability and turnover, events that occur predominantly at the plasma membrane or in the cytoplasm. However, the recent discovery of the nuclear BTB/POZ-ZF transcription factor Kaiso as a p120(ctn) binding partner, coupled with the detection of p120(ctn) in the nucleus of some cell lines and tumor tissues, suggested that like the classical beta-catenin, p120(ctn) undergoes nucleocytoplasmic trafficking and regulates gene expression. Indeed, p120(ctn) has a classic nuclear localization signal and does traffic to the nucleus. Moreover, nuclear p120(ctn) regulates Kaiso DNA-binding and transcriptional activity, similar to beta-catenin's modulation of TCF/LEF transcription activity. However unlike beta-catenin, p120(ctn) does not appear to be a transcriptional activator. Hence it remains to be determined whether the sole role of nuclear p120(ctn) is regulation of Kaiso or whether p120(ctn) binds and regulates other transcription factors or nuclear proteins.
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Affiliation(s)
- Juliet M Daniel
- Department of Biology, LSB-331, McMaster University, 1280 Main St. West, Hamilton, ON, Canada L8S 4K1.
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Abstract
The results of clinical and basic research conducted over the past two decades have implicated a role for oestrogen in modulating cognitive function. This review focuses on what the results of research using female rodent models have revealed about the effects of oestrogen on mammalian cognition. Increased levels of oestrogen are associated with increased dendritic spine and synapse density in the hippocampus, a brain area important for learning and memory. However, the role of oestrogen in the modulation of performance on tasks of learning and memory is complex because it exerts enhancing effects on some tasks and impairing effects on others. Hypotheses have been offered to explain these varied actions, including differentiating the effects of oestrogen on cognitive processes required to complete tasks and analysing the influence of fluctuating levels of oestrogen on the strategies selected by animals to solve tasks. It is proposed that, when these hypotheses are viewed together and within the context of oestrogen action in the hippocampus and potentially other brain areas, a framework for understanding the varied effects of oestrogen on cognition emerges. The hippocampal-dependent memory system supports the flexible expression of memories and the hippocampal-independent memory system supports development of individual representations. Because of the effects exerted by oestrogen on the structure and function of the hippocampus, it would be expected to enhance performance across a variety of tasks that require hippocampal-dependent flexible expression of memories and would not enhance performance on tasks that involve hippocampal-independent individual representations. This review offers a theoretical model by which the divergent results of studies assessing the role of oestrogen on cognition can be reconciled and suggests that effects of oestrogen on cognition are best understood within the framework of oestrogen action in the brain and the role of those brain areas affected by oestrogen in the mediation of learning and memory.
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Affiliation(s)
- J M Daniel
- Department of Psychology, University of New Orleans, New Orleans, LA 70148, USA.
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