1
|
Yang Y, Yan C, Chen XJ. CERCAM is a prognostic biomarker associated with immune infiltration of macrophage M2 polarization in head and neck squamous carcinoma. BMC Oral Health 2023; 23:724. [PMID: 37803318 PMCID: PMC10559510 DOI: 10.1186/s12903-023-03421-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 09/18/2023] [Indexed: 10/08/2023] Open
Abstract
PURPOSE This study aimed to investigate the relevance of cerebral endothelial cell adhesion molecule (CERCAM) expression to head and neck squamous cell carcinoma (HNSCC) prognosis and immune infiltration by macrophage M2 polarization. METHODS Timer, UALCAN and HPA databases was used to analyze the differences in mRNA and protein levels of CERCAM expression in HNSCC. The Timer database was also applied to analyze the correlation between CERCAM in HNSCC and immune infiltration. TCGA-HNSCC database was applied to analyze the correlation between CERCAM expression levels and clinicopathological features, and its diagnostic and prognostic value in HNSCC was also assessed. The cBioPortal and MethSurv databases were then applied to analyze the genetic variation and methylation status of CERCAM. In vitro cellular assays were performed to provide evidence that CERCAM promotes malignant biological behavior of tumors and promotes macrophage M2 polarization in tumors. Finally, underlying pathophysiological mechanisms of CERCAM involvement in the development of HNSCC were predicted using a bioinformatics approach. RESULTS CERCAM is significantly overexpressed in HNSCC and correlates with poor prognostic levels and has good performance in predicting survival status in HNSCC patients. Cox regression analysis indicates that CERCAM expression levels are independent risk factors for predicting OS, DSS, and PFI. CERCAM promotes tumor malignant biological behavior and promotes macrophage M2 polarization immune infiltration in HNSCC. In addition, CERCAM promotes tumor cell adhesion in head and neck squamous carcinoma and promotes tumor progression through several oncogenic signaling pathways. CONCLUSION CERCAM may serve as a new diagnostic and prognostic biomarker in HNSCC and is a promising therapeutic target for HNSCC.
Collapse
Affiliation(s)
- Ying Yang
- Department of Stomatology, General Hospital of the Central Theater Command, Wuhan, 430070, China
| | - Cong Yan
- Department of Oral Maxillofacial-Head and Neck Surgery, School of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, 110000, P.R. China
| | - Xiao-Jian Chen
- Department of Stomatology, General Hospital of the Central Theater Command, Wuhan, 430070, China.
| |
Collapse
|
2
|
VARISLI LOKMAN, TOLAN VEYSEL, CEN JIYANH, VLAHOPOULOS SPIROS, CEN OSMAN. Dissecting the effects of androgen deprivation therapy on cadherin switching in advanced prostate cancer: A molecular perspective. Oncol Res 2023; 30:137-155. [PMID: 37305018 PMCID: PMC10208071 DOI: 10.32604/or.2022.026074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 12/23/2022] [Indexed: 01/15/2023] Open
Abstract
Prostate cancer is one of the most often diagnosed malignancies in males and its prevalence is rising in both developed and developing countries. Androgen deprivation therapy has been used as a standard treatment approach for advanced prostate cancer for more than 80 years. The primary aim of androgen deprivation therapy is to decrease circulatory androgen and block androgen signaling. Although a partly remediation is accomplished at the beginning of treatment, some cell populations become refractory to androgen deprivation therapy and continue to metastasize. Recent evidences suggest that androgen deprivation therapy may cause cadherin switching, from E-cadherin to N-cadherin, which is the hallmark of epithelial-mesenchymal transition. Diverse direct and indirect mechanisms are involved in this switching and consequently, the cadherin pool changes from E-cadherin to N-cadherin in the epithelial cells. Since E-cadherin represses invasive and migrative behaviors of the tumor cells, the loss of E-cadherin disrupts epithelial tissue structure leading to the release of tumor cells into surrounding tissues and circulation. In this study, we review the androgen deprivation therapy-dependent cadherin switching in advanced prostate cancer with emphasis on its molecular basis especially the transcriptional factors regulated through TFG-β pathway.
Collapse
Affiliation(s)
- LOKMAN VARISLI
- Department of Molecular Biology and Genetics, Science Faculty, Dicle University, Diyarbakir, 21280, Turkey
- Cancer Research Center, Dicle University, Diyarbakir, 21280, Turkey
| | - VEYSEL TOLAN
- Department of Molecular Biology and Genetics, Science Faculty, Dicle University, Diyarbakir, 21280, Turkey
| | - JIYAN H. CEN
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, IL, 61801, USA
| | - SPIROS VLAHOPOULOS
- First Department of Pediatrics, National and Kapodistrian University of Athens, Athens, 11527, Greece
| | - OSMAN CEN
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
- Department of Natural Sciences and Engineering, John Wood College, Quincy, IL, 62305, USA
| |
Collapse
|
3
|
Santos SAA, Camargo ACL, Constantino FB, Colombelli KT, Portela LMF, Fioretto MN, Vieira JCS, Padilha PM, de Oliveira MB, Felisbino SL, Carvalho RF, Justulin LA. Identification of potential molecular pathways involved in prostate carcinogenesis in offspring exposed to maternal malnutrition. Aging (Albany NY) 2020; 12:19954-19978. [PMID: 33049715 PMCID: PMC7655221 DOI: 10.18632/aging.104093] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/05/2020] [Indexed: 12/12/2022]
Abstract
The developmental origins of health and disease concept links adult diseases with early-life exposure to inappropriate environmental conditions. Intrauterine and postnatal malnutrition may lead to an increased incidence of type 2 diabetes, obesity, and cardiovascular diseases. Maternal malnutrition (MM) has also been associated with prostate carcinogenesis. However, the molecular mechanisms associated with this condition remain poorly understood. Using a proteomic analysis, we demonstrated that MM changed the levels of proteins associated with growth factors, estrogen signaling, detoxification, and energy metabolism in the prostate of both young and old rats. These animals also showed increased levels of molecular markers of endoplasmic reticulum function and histones. We further performed an in silico analysis that identified commonly deregulated proteins in the ventral prostate of old rats submitted to MM with a mouse model and patients with prostate cancer. In conclusion, our results demonstrated that estrogenic signaling pathways, endoplasmic reticulum functions, energy metabolism, and molecular sensors of protein folding and Ca2+ homeostasis, besides histone, and RAS-GTPase family appear to be involved in this process. Knowledge of these factors may raise discussions regarding the role of maternal dietary intervention as a public policy for the lifelong prevention of chronic diseases.
Collapse
Affiliation(s)
- Sérgio Alexandre Alcantara Santos
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Ana Carolina Lima Camargo
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Flávia Bessi Constantino
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Ketlin Thassiani Colombelli
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Luiz Marcos Frediani Portela
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Matheus Naia Fioretto
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - José Cavalcante Souza Vieira
- Department of Chemical and Biological Sciences, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Pedro Magalhães Padilha
- Department of Chemical and Biological Sciences, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Mateus Betta de Oliveira
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Sergio Luis Felisbino
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Robson Francisco Carvalho
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| | - Luis Antonio Justulin
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu 18618-689, São Paulo, Brazil
| |
Collapse
|
4
|
Ribatti D, Tamma R, Annese T. Epithelial-Mesenchymal Transition in Cancer: A Historical Overview. Transl Oncol 2020; 13:100773. [PMID: 32334405 PMCID: PMC7182759 DOI: 10.1016/j.tranon.2020.100773] [Citation(s) in RCA: 467] [Impact Index Per Article: 116.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/26/2020] [Accepted: 04/01/2020] [Indexed: 12/12/2022] Open
Abstract
Epithelial-mesenchymal transitions (EMTs), the acquisition of mesenchymal features from epithelial cells, occur during some biological processes and are classified into three types: the first type occurs during embryonic development, the second type is associated with adult tissue regeneration, and the third type occurs in cancer progression. EMT occurring during embryonic development in gastrulation, renal development, and the origin and fate of the neural crest is a highly regulated process, while EMT occurring during tumor progression is highly deregulated. EMT allows the solid tumors to become more malignant, increasing their invasiveness and metastatic activity. Secondary tumors frequently maintain the typical histologic characteristics of the primary tumor. These histologic features connecting the secondary metastatic tumors to the primary is due to a process called mesenchymal-epithelial transition (MET). MET has been demonstrated in different mesenchymal tumors and is the expression of the reversibility of EMT. EMT modulation could constitute an approach to avoid metastasis. Some of the targeted small molecules utilized as antiproliferative agents have revealed to inhibit EMT initiation or maintenance because EMT is regulated through signaling pathways for which these molecules have been designed.
Collapse
Affiliation(s)
- Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy.
| | - Roberto Tamma
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| | - Tiziana Annese
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| |
Collapse
|
5
|
Kawahara R, Recuero S, Nogueira FCS, Domont GB, Leite KRM, Srougi M, Thaysen-Andersen M, Palmisano G. Tissue Proteome Signatures Associated with Five Grades of Prostate Cancer and Benign Prostatic Hyperplasia. Proteomics 2019; 19:e1900174. [PMID: 31576646 DOI: 10.1002/pmic.201900174] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/28/2019] [Indexed: 12/22/2022]
Abstract
The histology-based Gleason score (GS) of prostate cancer (PCa) tissue biopsy is the most accurate predictor of disease aggressiveness and an important measure to guide treatment strategies and patient management. The variability associated with PCa tumor sampling and the subjective determination of the GS are challenges that limit accurate diagnostication and prognostication. Thus, novel molecular signatures are needed to distinguish between indolent and aggressive forms of PCa for better patient management and outcomes. Herein, label-free LC-MS/MS proteomics is used to profile the proteome of 50 PCa tissues spanning five grade groups (n = 10 per group) relative to tissues from individuals with benign prostatic hyperplasia (BPH). Over 2000 proteins are identified albeit at different levels between and within the patient groups, revealing biological processes associated with specific grades. A panel of 11 prostate-derived proteins including IGKV3D-20, RNASET2, TACC2, ANXA7, LMOD1, PRCP, GYG1, NDUFV1, H1FX, APOBEC3C, and CTSZ display the potential to stratify patients from low and high PCa grade groups. Parallel reaction monitoring of the same sample cohort validate the differential expression of LMOD1, GYG1, IGKV3D-20, and RNASET2. The four proteins associated with low and high PCa grades reported here warrant further exploration as candidate biomarkers for PCa aggressiveness.
Collapse
Affiliation(s)
- Rebeca Kawahara
- Instituto de Ciências Biomédicas, Departamento de Parasitologia, Universidade de São Paulo, USP, São Paulo, CEP: 05508-000, Brazil.,Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Saulo Recuero
- Laboratório de Investigação Médica da Disciplina de Urologia da Faculdade de Medicina da USP, LIM55, São Paulo, CEP: 01246-903, Brazil
| | - Fabio C S Nogueira
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, CEP: 21941-909, Brazil
| | - Gilberto B Domont
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, CEP: 21941-909, Brazil
| | - Katia R M Leite
- Laboratório de Investigação Médica da Disciplina de Urologia da Faculdade de Medicina da USP, LIM55, São Paulo, CEP: 01246-903, Brazil
| | - Miguel Srougi
- Laboratório de Investigação Médica da Disciplina de Urologia da Faculdade de Medicina da USP, LIM55, São Paulo, CEP: 01246-903, Brazil
| | | | - Giuseppe Palmisano
- Instituto de Ciências Biomédicas, Departamento de Parasitologia, Universidade de São Paulo, USP, São Paulo, CEP: 05508-000, Brazil
| |
Collapse
|
6
|
Glycidamide Promotes the Growth and Migratory Ability of Prostate Cancer Cells by Changing the Protein Expression of Cell Cycle Regulators and Epithelial-to-Mesenchymal Transition (EMT)-Associated Proteins with Prognostic Relevance. Int J Mol Sci 2019; 20:ijms20092199. [PMID: 31060254 PMCID: PMC6540322 DOI: 10.3390/ijms20092199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 04/25/2019] [Accepted: 05/01/2019] [Indexed: 12/28/2022] Open
Abstract
Acrylamide (AA) and glycidamide (GA) can be produced in carbohydrate-rich food when heated at a high temperature, which can induce a malignant transformation. It has been demonstrated that GA is more mutagenic than AA. It has been shown that the proliferation rate of some cancer cells are increased by treatment with GA; however, the exact genes that are induced by GA in most cancer cells are not clear. In the present study, we demonstrated that GA promotes the growth of prostate cancer cells through induced protein expression of the cell cycle regulator. In addition, we also found that GA promoted the migratory ability of prostate cancer cells through induced epithelial-to-mesenchymal transition (EMT)-associated protein expression. In order to understand the potential prognostic relevance of GA-mediated regulators of the cell cycle and EMT, we present a three-gene signature to evaluate the prognosis of prostate cancer patients. Further investigations suggested that the three-gene signature (CDK4, TWIST1 and SNAI2) predicted the chances of survival better than any of the three genes alone for the first time. In conclusion, we suggested that the three-gene signature model can act as marker of GA exposure. Hence, this multi-gene panel may serve as a promising outcome predictor and potential therapeutic target in prostate cancer patients.
Collapse
|
7
|
daSilva LF, Beckedorff FC, Ayupe AC, Amaral MS, Mesel V, Videira A, Reis EM, Setubal JC, Verjovski-Almeida S. Chromatin Landscape Distinguishes the Genomic Loci of Hundreds of Androgen-Receptor-Associated LincRNAs From the Loci of Non-associated LincRNAs. Front Genet 2018; 9:132. [PMID: 29875794 PMCID: PMC5985396 DOI: 10.3389/fgene.2018.00132] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/03/2018] [Indexed: 11/30/2022] Open
Abstract
Cell signaling events triggered by androgen hormone in prostate cells is dependent on activation of the androgen receptor (AR) transcription factor. Androgen hormone binding to AR promotes its displacement from the cytoplasm to the nucleus and AR binding to DNA motifs, thus inducing activatory and inhibitory transcriptional programs through a complex regulatory mechanism not yet fully understood. In this work, we performed RNA-seq deep-sequencing of LNCaP prostate cancer cells and found over 7000 expressed long intergenic non-coding RNAs (lincRNAs), of which ∼4000 are novel lincRNAs, and 258 lincRNAs have their expression activated by androgen. Immunoprecipitation of AR, followed by large-scale sequencing of co-immunoprecipitated RNAs (RIP-Seq) has identified in the LNCaP cell line a total of 619 lincRNAs that were significantly enriched (FDR < 10%, DESeq2) in the anti-Androgen Receptor (antiAR) fraction in relation to the control fraction (non-specific IgG), and we named them Androgen-Receptor-Associated lincRNAs (ARA-lincRNAs). A genome-wide analysis showed that protein-coding gene neighbors to ARA-lincRNAs had a significantly higher androgen-induced change in expression than protein-coding genes neighboring lincRNAs not associated to AR. To find relevant epigenetic signatures enriched at the ARA-lincRNAs’ transcription start sites (TSSs) we used a machine learning approach and identified that the ARA-lincRNA genomic loci in LNCaP cells are significantly enriched with epigenetic marks that are characteristic of in cis enhancer RNA regulators, and that the H3K27ac mark of active enhancers is conspicuously enriched at the TSS of ARA-lincRNAs adjacent to androgen-activated protein-coding genes. In addition, LNCaP topologically associating domains (TADs) that comprise chromatin regions with ARA-lincRNAs exhibit transcription factor contents, epigenetic marks and gene transcriptional activities that are significantly different from TADs not containing ARA-lincRNAs. This work highlights the possible involvement of hundreds of lincRNAs working in synergy with the AR on the genome-wide androgen-induced gene regulatory program in prostate cells.
Collapse
Affiliation(s)
- Lucas F daSilva
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| | - Felipe C Beckedorff
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| | - Ana C Ayupe
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Murilo S Amaral
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| | - Vinícius Mesel
- Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| | - Alexandre Videira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| | - Eduardo M Reis
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - João C Setubal
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Biocomplexity Institute of Virginia Tech, Blacksburg, VA, United States
| | - Sergio Verjovski-Almeida
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Laboratório de Expressão Gênica em Eucariotos, Instituto Butantan, São Paulo, Brazil
| |
Collapse
|
8
|
Reeves KJ, Hurrell JE, Cecchini M, van der Pluijm G, Down JM, Eaton CL, Hamdy F, Clement-Lacroix P, Brown NJ. Prostate cancer cells home to bone using a novelin vivomodel: Modulation by the integrin antagonist GLPG0187. Int J Cancer 2014; 136:1731-40. [DOI: 10.1002/ijc.29165] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 07/13/2014] [Accepted: 07/28/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Kimberley J. Reeves
- Microcirculation Research Group, Department of Oncology; CR-UK/YCR Sheffield Cancer Research Centre, Faculty of Medicine, Dentistry and Health, University of Sheffield; S10 2RX United Kingdom
- Bone Biology Group, Department of Human Metabolism; Medical School, University of Sheffield; Sheffield S10 2RX United Kingdom
| | - Jack E. Hurrell
- Microcirculation Research Group, Department of Oncology; CR-UK/YCR Sheffield Cancer Research Centre, Faculty of Medicine, Dentistry and Health, University of Sheffield; S10 2RX United Kingdom
| | - Marco Cecchini
- Urology Research Laboratory, Department of Urology; University of Bern, Murtenstrasse 35; CH-3010 Bern Switzerland
| | - Gabri van der Pluijm
- Department of Urology; Leiden University Medical Center; J3-100, P.O. Box 9600, 2300 RC Leiden The Netherlands
| | - Jenny M. Down
- Bone Biology Group, Department of Human Metabolism; Medical School, University of Sheffield; Sheffield S10 2RX United Kingdom
| | - Colby L. Eaton
- Bone Biology Group, Department of Human Metabolism; Medical School, University of Sheffield; Sheffield S10 2RX United Kingdom
| | - Freddie Hamdy
- Urology & Oncology, Nuffield Department of Surgery; John Radcliffe Hospital, University of Oxford; Oxford OX3 9DU United Kingdom
| | | | - Nicola J. Brown
- Microcirculation Research Group, Department of Oncology; CR-UK/YCR Sheffield Cancer Research Centre, Faculty of Medicine, Dentistry and Health, University of Sheffield; S10 2RX United Kingdom
| |
Collapse
|
9
|
Codan B, Del Favero G, Martinelli V, Long CS, Mestroni L, Sbaizero O. Exploring the elasticity and adhesion behavior of cardiac fibroblasts by atomic force microscopy indentation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:427-34. [PMID: 24857511 DOI: 10.1016/j.msec.2014.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 02/28/2014] [Accepted: 04/02/2014] [Indexed: 12/19/2022]
Abstract
AFM was used to collect the whole force-deformation cell curves. They provide both the elasticity and adhesion behavior of mouse primary cardiac fibroblasts. To confirm the hypothesis that a link exists between the membrane receptors and the cytoskeletal filaments causing therefore changing in both elasticity and adhesion behavior, actin-destabilizing Cytochalsin D was administrated to the fibroblasts. From immunofluorescence observation and AFM loading/unloading curves, cytoskeletal reorganization as well as a change in the elasticity and adhesion was indeed observed. Elasticity of control fibroblasts is three times higher than that for fibroblasts treated with 0.5 μM Cytochalasin. Moreover, AFM loading-unloading curves clearly show the different mechanical behavior of the two different cells analyzed: (i) for control cells the AFM cantilever rises during the dwell time while cells with Cytochalasin fail to show such an active resistance; (ii) the maximum force to deform control cells is quite higher and as far as adhesion is concern (iii) the maximum separation force, detachment area and the detachment process time are much larger for control compared to the Cytochalasin treated cells. Therefore, alterations in the cytoskeleton suggest that a link must exist between the membrane receptors and the cytoskeletal filaments beneath the cellular surface and inhibition of actin polymerization has effects on the whole cell mechanical behavior as well as adhesion.
Collapse
Affiliation(s)
- B Codan
- Department of Engineering and Architecture, University of Trieste, Italy
| | - G Del Favero
- Department of Engineering and Architecture, University of Trieste, Italy
| | - V Martinelli
- Department of Engineering and Architecture, University of Trieste, Italy; International Center for Genetic Engineering and Biotechnology, Trieste, Italy
| | - C S Long
- University of Colorado Cardiovascular Institute, University of Colorado Denver, Aurora, CO, USA
| | - L Mestroni
- University of Colorado Cardiovascular Institute, University of Colorado Denver, Aurora, CO, USA
| | - O Sbaizero
- Department of Engineering and Architecture, University of Trieste, Italy.
| |
Collapse
|
10
|
Ye L, Sanders AJ, Sun PH, Mason MD, Jiang WG. Capillary morphogenesis gene 2 regulates adhesion and invasiveness of prostate cancer cells. Oncol Lett 2014; 7:2149-2153. [PMID: 24932305 PMCID: PMC4049711 DOI: 10.3892/ol.2014.2038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Accepted: 02/18/2014] [Indexed: 12/03/2022] Open
Abstract
Capillary morphogenesis gene 2 (CMG2), also known as anthrax toxin receptor 2, has been indicated in the formation of new vasculature and in the internalisation of the anthrax toxin. Anti-angiogenesis therapy that targets this molecule has been investigated. However, our recent studies of this molecule have indicated that this gene may also play certain roles in cancer cells. The present study aimed to examine the expression of CMG2 in prostate cancer tissues and cell lines, and also its impact on cellular functions. The expression of CMG2 was detectable in normal and prostate cancer tissues. The prostate cancer cell lines appeared to have relatively high expression compared with the prostatic epithelial cells. Knockdown of CMG2 impaired the adherence of the prostate cancer cells. CMG2 overexpression resulted in decreasing invasiveness, while the knockdown of CMG2 contrastingly enhanced this ability. The altered expression of CMG2 in the prostate cancer cells did not affect the in vitro or in vivo growth of the cells. Taken together, these results show that CMG2 is expressed in prostatic epithelia and cancer cells. In addition to its role in the angiogenesis and the internalisation of anthrax toxin, CMG2 also plays an important role in regulating the adhesion and invasion of prostate cancer cells.
Collapse
Affiliation(s)
- Lin Ye
- Metastasis and Angiogenesis Research Group, Institute of Cancer and Genetics, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
| | - Andrew J Sanders
- Metastasis and Angiogenesis Research Group, Institute of Cancer and Genetics, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
| | - Ping-Hui Sun
- Metastasis and Angiogenesis Research Group, Institute of Cancer and Genetics, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
| | - Malcolm D Mason
- Metastasis and Angiogenesis Research Group, Institute of Cancer and Genetics, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
| | - Wen G Jiang
- Metastasis and Angiogenesis Research Group, Institute of Cancer and Genetics, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
| |
Collapse
|
11
|
Reeves KJ, Hou J, Higham SE, Sun Z, Trzeciakowski JP, Meininger GA, Brown NJ. Selective measurement and manipulation of adhesion forces between cancer cells and bone marrow endothelial cells using atomic force microscopy. Nanomedicine (Lond) 2012. [PMID: 23199365 DOI: 10.2217/nnm.12.139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIMS The lack of understanding of the biology of bone cancer metastasis has limited the development of effective treatment strategies. The aim of this study was to characterize tumor cell adhesion molecules and determine active tumor cell interactions with human bone marrow endothelial (BME) cells using atomic force microscopy. MATERIALS & METHODS A single prostate (PC3) cancer cell was coupled (concanavalin A) to the atomic force microscopy cantilever then placed in contact with BME cells for cell force spectroscopy measurements. RESULTS & DISCUSSION Strong adhesive interactions between PC3 and BME cells were significantly (p < 0.05) reduced by anti-ICAM-1, anti-β1 and anti-P-selectin, but not anti-VCAM-1. The combined blocking antibodies or the therapeutic agent zoledronic acid significantly (p < 0.005) reduced the adhesive interactions by 65 and 63%, respectively, which was confirmed using a functional in vitro assay. CONCLUSION Atomic force microscopy provides a highly sensitive screening assay to determine and quantify nanoscale adhesion events between different cell types important in the metastatic cascade.
Collapse
Affiliation(s)
- Kimberley J Reeves
- Microcirculation Research Group, Department of Oncology, School of Medicine, University of Sheffield, S10 2RX, UK
| | | | | | | | | | | | | |
Collapse
|
12
|
Nowicki A, Sporny S, Duda-Szymańska J. β-catenin as a prognostic factor for prostate cancer (PCa). Cent European J Urol 2012; 65:119-23. [PMID: 24578946 PMCID: PMC3921790 DOI: 10.5173/ceju.2012.03.art4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 03/25/2012] [Accepted: 04/19/2012] [Indexed: 11/22/2022] Open
Abstract
Introduction The prostate cancer is difficult to predict, and treatment failure is associated with local infiltration, as well as distant metastases. Adhesion and migration abilities to of cancer cells play a major role in formation of metastasis. The participation of β-catenin in pathogene-sis of many types of cancer and benign processes has been an important discovery of recent years. Material and methods The studied material was obtained by transrectal, sextant core biopsy from 102 patients hospitalized in Department of Urology, Regional Hospital in Kalisz (2001-2004). The aim of our study was to determine the predictive value of β-catenin immunoexpression in prostate cancer, to analyze the prognostic aspect of some histopathological features and finally to assess the relationship between β-catenin immunoreactivity and the microscopic image of the tumor. Relationships between the investigated variables were analyzed using the Chi2 test of compatibility. We used the Kaplan-Meier curves to assess survival differences between groups of patients. Finally we established which of the studied factors significantly affect the patient outcome, using the method of Cox proportional hazard regression. Results In prostate cancer in comparison with the normal epithelium, both the location and the strength of β-catenin immunoexpression are impaired. Conclusions Our results indicate that the presence of disorders in β-catenin immunoexpression in prostate cancer cells indicates a high risk of death due to tumor progression and makes it imperative for immediate treatment procedures.
Collapse
Affiliation(s)
- Andrzej Nowicki
- Department of Pathology, Medical University of Łódź, Łódź, Poland
| | - Stanisław Sporny
- Department of Oral Pathology, Medical University of Łódź, Poland
| | | |
Collapse
|
13
|
Walker KA, Doak S, Dunstan P. Mechanisms of cell–cell adhesion identified by immunofluorescent labelling with quantum dots: A scanning near-field optical microscopy approach. Ultramicroscopy 2011; 111:1200-5. [DOI: 10.1016/j.ultramic.2011.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 11/30/2010] [Accepted: 01/07/2011] [Indexed: 11/28/2022]
|
14
|
Tumor-Stromal Interactions Influence Radiation Sensitivity in Epithelial- versus Mesenchymal-Like Prostate Cancer Cells. JOURNAL OF ONCOLOGY 2010; 2010. [PMID: 20798867 PMCID: PMC2926670 DOI: 10.1155/2010/232831] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 05/12/2010] [Accepted: 05/12/2010] [Indexed: 11/17/2022]
Abstract
HS-27a human bone stromal cells, in 2D or 3D coultures, induced cellular plasticity in human prostate cancer ARCaP(E) and ARCaP(M) cells in an EMT model. Cocultured ARCaP(E) or ARCaP(M) cells with HS-27a, developed increased colony forming capacity and growth advantage, with ARCaP(E) exhibiting the most significant increases in presence of bone or prostate stroma cells. Prostate (Pt-N or Pt-C) or bone (HS-27a) stromal cells induced significant resistance to radiation treatment in ARCaP(E) cells compared to ARCaP(M) cells. However pretreatment with anti-E-cadherin antibody (SHEP8-7) or anti-alpha v integrin blocking antibody (CNT095) significantly decreased stromal cell-induced radiation resistance in both ARCaP(E)- and ARCaP(M)-cocultured cells. Taken together the data suggest that mesenchymal-like cancer cells reverting to epithelial-like cells in the bone microenvironment through interaction with bone marrow stromal cells and reexpress E-cadherin. These cell adhesion molecules such as E-cadherin and integrin alpha v in cancer cells induce cell survival signals and mediate resistance to cancer treatments such as radiation.
Collapse
|
15
|
Radaelli E, Damonte P, Cardiff RD. Epithelial-mesenchymal transition in mouse mammary tumorigenesis. Future Oncol 2010; 5:1113-27. [PMID: 19852725 DOI: 10.2217/fon.09.93] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Epithelial-mesenchymal transition tumorigenesis in the mouse has been described for over 100 years using various terms and with little comprehension of the underlying mechanisms. Recently, epithelial-mesenchymal transition tumors have been recognized in mammary glands of genetically engineered mice. This review provides a historical perspective and the current observations in the context of some of the key molecular biology. The biology of mouse mammary epithelial-mesenchymal transition tumorigenesis is discussed with comparisons to human breast cancer.
Collapse
Affiliation(s)
- Enrico Radaelli
- Department of Veterinary Pathology, Hygiene and Public Health, Section of Veterinary and Avian Pathology, Faculty of Veterinary Medicine, University of Milan, Via Celoria, 10 20133 Milano, Italy
| | | | | |
Collapse
|
16
|
Role of DAB2IP in modulating epithelial-to-mesenchymal transition and prostate cancer metastasis. Proc Natl Acad Sci U S A 2010; 107:2485-90. [PMID: 20080667 DOI: 10.1073/pnas.0908133107] [Citation(s) in RCA: 192] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A single nucleotide polymorphism in the DAB2IP gene is associated with risk of aggressive prostate cancer (PCa), and loss of DAB2IP expression is frequently detected in metastatic PCa. However, the functional role of DAB2IP in PCa remains unknown. Here, we show that the loss of DAB2IP expression initiates epithelial-to-mesenchymal transition (EMT), which is visualized by repression of E-cadherin and up-regulation of vimentin in both human normal prostate epithelial and prostate carcinoma cells as well as in clinical prostate-cancer specimens. Conversely, restoring DAB2IP in metastatic PCa cells reversed EMT. In DAB2IP knockout mice, prostate epithelial cells exhibited elevated mesenchymal markers, which is characteristic of EMT. Using a human prostate xenograft-mouse model, we observed that knocking down endogenous DAB2IP in human carcinoma cells led to the development of multiple lymph node and distant organ metastases. Moreover, we showed that DAB2IP functions as a scaffold protein in regulating EMT by modulating nuclear beta-catenin/T-cell factor activity. These results show the mechanism of DAB2IP in EMT and suggest that assessment of DAB2IP may provide a prognostic biomarker and potential therapeutic target for PCa metastasis.
Collapse
|
17
|
Abstract
Housekeeping (HK) genes are involved in basic cellular functions and tend to be constitutively expressed across various tissues and conditions. A number of studies have analyzed the value of HK genes as an internal standard for assessing gene expression, but the role of HK genes in cancer development has never been specifically addressed. In this study, we sought to evaluate the expression of HK genes during prostate tumorigenesis. We performed a meta-analysis of gene expression during the transition from normal prostate (NP) to localized prostate cancer (LPC) (i.e., NP > LPC) and from localized to metastatic prostate cancer (MPC) (i.e., LPC > MPC). We found that HK genes are more likely to be differentially expressed during prostate tumorigenesis than is the average gene in the human genome, suggesting that prostate tumorigenesis is driven by modulation of the expression of HK genes. Cell-cycle genes and proliferation markers were up-regulated in both NP > LPC and LPC > MPC transitions. We also found that the genes encoding ribosomal proteins were up-regulated in the NP > LPC and down-regulated in the LPC > MPC transition. The expression of heat shock proteins was up-regulated during the LPC > MPC transition, suggesting that in its advanced stages, prostate tumor is under cellular stress. The results of these analyses suggest that during prostate tumorigenesis, there is a period when the tumor is under cellular stress and, therefore, may be the most vulnerable and responsive to treatment.
Collapse
Affiliation(s)
- Jin Young Byun
- Department of Genitourinary Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX
| | - Christopher J. Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX
| | - Ivan Gorlov
- Department of Genitourinary Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX
| |
Collapse
|
18
|
Gorlov IP, Gallick GE, Gorlova OY, Amos C, Logothetis CJ. GWAS meets microarray: are the results of genome-wide association studies and gene-expression profiling consistent? Prostate cancer as an example. PLoS One 2009; 4:e6511. [PMID: 19652704 PMCID: PMC2714961 DOI: 10.1371/journal.pone.0006511] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Accepted: 06/29/2009] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Genome-wide association studies (GWASs) and global profiling of gene expression (microarrays) are two major technological breakthroughs that allow hypothesis-free identification of candidate genes associated with tumorigenesis. It is not obvious whether there is a consistency between the candidate genes identified by GWAS (GWAS genes) and those identified by profiling gene expression (microarray genes). METHODOLOGY/PRINCIPAL FINDINGS We used the Cancer Genetic Markers Susceptibility database to retrieve single nucleotide polymorphisms from candidate genes for prostate cancer. In addition, we conducted a large meta-analysis of gene expression data in normal prostate and prostate tumor tissue. We identified 13,905 genes that were interrogated by both GWASs and microarrays. On the basis of P values from GWASs, we selected 1,649 most significantly associated genes for functional annotation by the Database for Annotation, Visualization and Integrated Discovery. We also conducted functional annotation analysis using same number of the top genes identified in the meta-analysis of the gene expression data. We found that genes involved in cell adhesion were overrepresented among both the GWAS and microarray genes. CONCLUSIONS/SIGNIFICANCE We conclude that the results of these analyses suggest that combining GWAS and microarray data would be a more effective approach than analyzing individual datasets and can help to refine the identification of candidate genes and functions associated with tumor development.
Collapse
Affiliation(s)
- Ivan P Gorlov
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | | | | | | | | |
Collapse
|
19
|
Lawler K, O'Sullivan G, Long A, Kenny D. Shear stress induces internalization of E-cadherin and invasiveness in metastatic oesophageal cancer cells by a Src-dependent pathway. Cancer Sci 2009; 100:1082-7. [PMID: 19432901 PMCID: PMC11159203 DOI: 10.1111/j.1349-7006.2009.01160.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Metastatic disease is dependent on tumor cell migration through the venous and lymphatic systems and requires dynamic rearrangement of adherens junctions. Endocytosis of cadherins is a key mechanism to dynamically arrange adherens junctions, signaling, and motility in tumor cells; however, the role of shear in regulating this process in metastatic cells is unknown. In this study, the role of shear in regulating cell surface expression of E-cadherin was investigated. We found that exposure to venous shear (shear rate, 200/s) induced internalization of E-cadherin in adherent metastatic oesophageal tumor cells (OC-1 tumor cell line). Internalized E-cadherin was found localized to Rab5-positive endosomes and was not present in lysosomes. As the Src family of tyrosine kinase have been implicated in regulating cadherin expression, we investigated the role of shear in regulating E-cadherin through Src activity. Pretreatment of OC-1 cells with the specific Src kinase inhibitor 4-amino-5- (4-methylphenyl)-7-(t-butyl)pyrazolo[3,4-d]pyrimidine (PP1) prevented shear-induced internalization of E-cadherin. Direct measurement of Src activity (phosphorylation on Y416) showed that Src is activated in sheared OC-1 cells and that the shear-induced increase in phospho-Src is inhibited by the presence of PP1. Moreover, we show that shear stress significantly increased the invasive capacity of OC-1 cells (P < 0.001), a process inhibited by the presence of PP1. These results indicate a novel role for shear in regulating the endocytosis of E-cadherin and invasiveness in metastatic cells.
Collapse
Affiliation(s)
- Karen Lawler
- Molecular and Cellular Therapeutics, The Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | | | | |
Collapse
|
20
|
Stealth siRNA against CD147 inhibits hepatocellular carcinoma cell metastatic properties. Biologia (Bratisl) 2008. [DOI: 10.2478/s11756-008-0132-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
21
|
Hugo H, Ackland ML, Blick T, Lawrence MG, Clements JA, Williams ED, Thompson EW. Epithelial--mesenchymal and mesenchymal--epithelial transitions in carcinoma progression. J Cell Physiol 2008; 213:374-83. [PMID: 17680632 DOI: 10.1002/jcp.21223] [Citation(s) in RCA: 802] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Like a set of bookends, cellular, molecular, and genetic changes of the beginnings of life mirror those of one of the most common cause of death--metastatic cancer. Epithelial to mesenchymal transition (EMT) is an important change in cell phenotype which allows the escape of epithelial cells from the structural constraints imposed by tissue architecture, and was first recognized by Elizabeth Hay in the early to mid 1980's to be a central process in early embryonic morphogenesis. Reversals of these changes, termed mesenchymal to epithelial transitions (METs), also occur and are important in tissue construction in normal development. Over the last decade, evidence has mounted for EMT as the means through which solid tissue epithelial cancers invade and metastasize. However, demonstrating this potentially rapid and transient process in vivo has proven difficult and data connecting the relevance of this process to tumor progression is still somewhat limited and controversial. Evidence for an important role of MET in the development of clinically overt metastases is starting to accumulate, and model systems have been developed. This review details recent advances in the knowledge of EMT as it occurs in breast development and carcinoma and prostate cancer progression, and highlights the role that MET plays in cancer metastasis. Finally, perspectives from a clinical and translational viewpoint are discussed.
Collapse
Affiliation(s)
- Honor Hugo
- Embryology Laboratory, Murdoch Children's Research Institute, The Royal Children's Hospital, Victoria, Australia
| | | | | | | | | | | | | |
Collapse
|
22
|
Lawrence MG, Veveris-Lowe TL, Whitbread AK, Nicol DL, Clements JA. Epithelial-mesenchymal transition in prostate cancer and the potential role of kallikrein serine proteases. Cells Tissues Organs 2007; 185:111-5. [PMID: 17587816 DOI: 10.1159/000101311] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Prostate cancer is associated with significant mortality once the tumour has spread outside the gland. Epithelial-mesenchymal transition (EMT) has been proposed to facilitate this dissemination of tumour cells. In this article we summarize the evidence for EMT in prostate cancer, drawing on the expression of EMT-related markers and the functions of factors known to induce EMT in other systems. We also discuss our recent findings that two members of the tissue kallikrein family of serine proteases, prostate-specific antigen (PSA/KLK3) and kallikrein-related peptidase 4 (KLK4), lead to EMT-like changes in PC3 prostate cancer cells.
Collapse
Affiliation(s)
- Mitchell G Lawrence
- Hormone-Dependent Cancer Program, School of Life Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | | | | | | | | |
Collapse
|
23
|
Jennbacken K, Gustavsson H, Welén K, Vallbo C, Damber JE. Prostate cancer progression into androgen independency is associated with alterations in cell adhesion and invasivity. Prostate 2006; 66:1631-40. [PMID: 16927303 DOI: 10.1002/pros.20469] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Mortality in prostate cancer is primarily due to failure to cure hormone refractory patients with metastatic disease. The present study focused on elucidating alterations in invasive properties, which are connected with progression into androgen independency. METHODS Ability to grow without anchor, migration, cell adhesion properties and expression of invasive factors were investigated in LNCaP and its androgen-independent subline LNCaP-19. Also, invasive capacity into blood vessels was examined in subcutaneous tumors. RESULTS Transition into an androgen-independent state was associated with ability to grow without anchor, increased migration, and alterations in cell adhesion properties. The tumor suppressor E-cadherin was downregulated and the proinvasive factors N-cadherin, MMP-9, and membrane type 1 (MT1)-MMP were upregulated in LNCaP-19. In addition, LNCaP-19 displayed a markedly increased invasivity into blood vessels. CONCLUSIONS The results show that LNCaP-19 mimics hormone refractory prostate cancer and therefore is an excellent tool for studies on androgen-independent cancer and invasion. This study shows that transition into an androgen-independent state correlates with several proinvasive alterations.
Collapse
Affiliation(s)
- Karin Jennbacken
- Department of Urology, Institute of Clinical Sciences, Sahlgrenska Academy, Göteborg University, Göteborg, Sweden
| | | | | | | | | |
Collapse
|
24
|
Chen S, Zhu B, Yu L. In silico comparison of gene expression levels in ten human tumor types reveals candidate genes associated with carcinogenesis. Cytogenet Genome Res 2006; 112:53-9. [PMID: 16276090 DOI: 10.1159/000087513] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2005] [Accepted: 04/25/2005] [Indexed: 11/19/2022] Open
Abstract
Most human cancers are characterized by genomic instability. Changes associated with such may result in altered expression of numerous genes. The sequence information available in the public databases can be used to identify transcripts differentially expressed in cancers. Determining cancer-related genes that are commonly deregulated in different tumor types may facilitate identification of targets for cancer diagnoses and therapeutic treatments. Using a data-mining tool named Digital Differential Display (DDD) from the UniGene database at the NCBI web site, gene expression levels of ten different tumor types and their counterpart normal tissues were analyzed. Unigenes which showed transcriptional regulation in more than five tumor types with > or =2-fold differences from normal tissues were identified. The expression data of selected Unigenes were subjected to clustering analysis. 127 commonly up-regulated genes and 92 commonly down-regulated genes were identified. Clustering analysis using these genes showed that most tumor types can be clustered into a separate branch from most normal tissues. Nineteen genes that have been shown to be involved in carcinogenesis by experimental evidence were also identified. Present computational analyses revealed 219 candidate cancer-related genes that are commonly deregulated in ten human tumor types which may contribute to the progress of carcinogenesis.
Collapse
Affiliation(s)
- S Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | | | | |
Collapse
|
25
|
Yates C, Wells A, Turner T. Luteinising hormone-releasing hormone analogue reverses the cell adhesion profile of EGFR overexpressing DU-145 human prostate carcinoma subline. Br J Cancer 2005; 92:366-75. [PMID: 15655536 PMCID: PMC2361841 DOI: 10.1038/sj.bjc.6602350] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Cetrorelix, a luteinising hormone-releasing hormone (LHRH) analogue, has been shown to limit growth of the human androgen-independent prostate cell line DU-145, although other inhibitory actions may also be affected. Both growth and invasion of DU-145 cells are linked to autocrine epidermal growth factor receptor (EGFR) signalling. Invasiveness requires not only cells to migrate to conduits, but also reduced adhesiveness between tumour cells to enable separation from the tumour mass. Thus, we investigated whether Cetrorelix alters the DU-145 cell-cell adhesion and if this occurs via altered EGFR signalling. Pharmacologic levels of Cetrorelix limited the invasiveness of a highly invasive DU-145 subline overexpressing full-length EGFR (DU-145 WT). Extended exposure of the cells to Cetrorelix resulted in increased levels of the cell-cell adhesion complex molecules E-cadherin, alpha- and beta-catenin, and p120. Puromycin blocked the increases in E-cadherin and beta-catenin levels, suggesting that de novo protein synthesis is required. The Cetrorelix effect appears to occur via transmodulation of EGFR by a protein kinase C (PKC)-dependent mechanism, as there were no changes in DU-145 cells expressing EGFR engineered to negate the PKC transattenuation site (DU-145 A654); downregulation of EGFR signalling produced a similar upregulation in adhesion complex proteins, further suggesting a role for autocrine signalling. Cetrorelix increased the cell-cell adhesiveness of DU-145 WT cells to an extent similar to that seen when autocrine EGFR signalling is blocked; as expected, DU-145 A654 cell-cell adhesion also was unaffected by Cetrorelix. The increased adhesiveness is expected as the adhesion complex molecules moved to the cells' periphery. These data offer direct insight into the possible crosstalk pathways between the LHRH and EGFR receptor signalling. The ability of Cetrorelix to downregulate EGFR signalling and subsequently reverse the antiadhesiveness found in metastatic prostate cancer highlights a novel potential target for therapeutic strategies.
Collapse
Affiliation(s)
- C Yates
- Department of Pathology, University of Pittsburgh, and Pittsburgh VAMC, Pittsburgh, PA 15261, USA
- Department of Biology and Center for Cancer Research, Carver Research Foundation, Tuskegee University, Tuskegee, AL 36088, USA
| | - A Wells
- Department of Pathology, University of Pittsburgh, and Pittsburgh VAMC, Pittsburgh, PA 15261, USA
| | - T Turner
- Department of Biology and Center for Cancer Research, Carver Research Foundation, Tuskegee University, Tuskegee, AL 36088, USA
- Department of Biology and Center for Cancer Research, Carver Research Foundation, Tuskegee University, Tuskegee, AL 36088, USA. E-mail:
| |
Collapse
|
26
|
Griffin MA, Engler AJ, Barber TA, Healy KE, Sweeney HL, Discher DE. Patterning, prestress, and peeling dynamics of myocytes. Biophys J 2004; 86:1209-22. [PMID: 14747355 PMCID: PMC1303913 DOI: 10.1016/s0006-3495(04)74195-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
As typical anchorage-dependent cells myocytes must balance contractility against adequate adhesion. Skeletal myotubes grown as isolated strips from myoblasts on micropatterned glass exhibited spontaneous peeling after one end of the myotube was mechanically detached. Such results indicate the development of a prestress in the cells. To assess this prestress and study the dynamic adhesion strength of single myocytes, the shear stress of fluid aspirated into a large-bore micropipette was then used to forcibly peel myotubes. The velocity at which cells peeled from the surface, V(peel), was measured as a continuously increasing function of the imposed tension, T(peel), which ranges from approximately 0 to 50 nN/ micro m. For each cell, peeling proved highly heterogeneous, with V(peel) fluctuating between 0 micro m/s ( approximately 80% of time) and approximately 10 micro m/s. Parallel studies of smooth muscle cells expressing GFP-paxillin also exhibited a discontinuous peeling in which focal adhesions fractured above sites of strong attachment (when pressure peeled using a small-bore pipette). The peeling approaches described here lend insight into the contractile-adhesion balance and can be used to study the real-time dynamics of stressed adhesions through both physical detection and the use of GFP markers; the methods should prove useful in comparing normal versus dystrophic muscle cells.
Collapse
Affiliation(s)
- Maureen A Griffin
- Department of Chemical and Biomolecular Engineering, Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | |
Collapse
|
27
|
|
28
|
Wang H, Yu D, Agrawal S, Zhang R. Experimental therapy of human prostate cancer by inhibiting MDM2 expression with novel mixed-backbone antisense oligonucleotides: in vitro and in vivo activities and mechanisms. Prostate 2003; 54:194-205. [PMID: 12518324 DOI: 10.1002/pros.10187] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND MDM2 oncogene is overexpressed in many human cancers including prostate cancer and MDM2 levels are associated with poor prognosis. This study was undertaken to investigate the functions of MDM2 oncogene in prostate cancer growth and the value of MDM2 as a drug target for prostate cancer therapy by inhibiting MDM2 expression. METHODS Antisense anti-human-MDM2 mixed-backbone oligonucleotide and its mismatch control were tested in in vitro and in vivo human prostate cancer models (LNCaP, DU 145, and PC-3) for anti-tumor activity. Targeted gene products and related proteins were analyzed and the anti-tumor activity was determined when the oligonucleotides were used alone or in combination with cancer therapeutics. RESULTS The antisense oligonucleotide specifically inhibited MDM2 expression in a dose- and time-dependent manner, resulting in significant anti-tumor activity in vitro and in vivo. In LNCaP cells, p53 and p21 levels were elevated. The antisense oligonucleotide also potentiated the effects of p53 activation and p21 induction by chemotherapeutic agents 10-hydroxycamptothecin, adriamycin, 5-fluorouracil, and paclitaxel. In DU145 cells, following inhibition of MDM2 expression, p21 levels were elevated although p53 levels remained unchanged. In both cell lines, the antisense oligonucleotide inhibited tumor cell growth and induced apoptosis in vitro. In a dose-dependent manner, the antisense oligonucleotide showed anti-tumor activity in nude mice bearing DU145 or PC-3 xenografts. It significantly increased therapeutic effectiveness of the chemotherapeutic agent irinotecan and slightly improved the effects of paclitaxel and Rituxan. CONCLUSIONS These results indicate that MDM2 has a role in prostate tumor growth through both p53-dependent and p53-independent mechanisms, indicating that MDM2 inhibitors have a broad spectrum of anti-tumor activities in human prostate cancers regardless of p53 status.
Collapse
Affiliation(s)
- Hui Wang
- Department of Pharmacology and Toxicology, Division of Clinical Pharmacology, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama 35294-0019, USA
| | | | | | | |
Collapse
|