1
|
Nordlinger A, Del Rio J, Parikh S, Thomas L, Parikh R, Vaknine H, Brenner R, Baschieri F, Robert A, Khaled M. Impairing hydrolase transport machinery prevents human melanoma metastasis. Commun Biol 2024; 7:574. [PMID: 38750105 PMCID: PMC11096325 DOI: 10.1038/s42003-024-06261-y] [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: 05/30/2023] [Accepted: 04/29/2024] [Indexed: 05/18/2024] Open
Abstract
Metastases are the major cause of cancer-related death, yet, molecular weaknesses that could be exploited to prevent tumor cells spreading are poorly known. Here, we found that perturbing hydrolase transport to lysosomes by blocking either the expression of IGF2R, the main receptor responsible for their trafficking, or GNPT, a transferase involved in the addition of the specific tag recognized by IGF2R, reduces melanoma invasiveness potential. Mechanistically, we demonstrate that the perturbation of this traffic, leads to a compensatory lysosome neo-biogenesis devoided of degradative enzymes. This regulatory loop relies on the stimulation of TFEB transcription factor expression. Interestingly, the inhibition of this transcription factor playing a key role of lysosome production, restores melanomas' invasive potential in the absence of hydrolase transport. These data implicate that targeting hydrolase transport in melanoma could serve to develop new therapies aiming to prevent metastasis by triggering a physiological response stimulating TFEB expression in melanoma.
Collapse
Affiliation(s)
- Alice Nordlinger
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France
| | - Justine Del Rio
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France
| | - Shivang Parikh
- The Ragon Institute of MGH, MIT, and Harvard University, Cambridge, MA, USA
| | - Laetitia Thomas
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France
| | - Roma Parikh
- Institute of Pathology, E. Wolfson Medical Center, Holon, Israel
| | - Hananya Vaknine
- Institute of Pathology, E. Wolfson Medical Center, Holon, Israel
| | - Ronen Brenner
- Institute of Pathology, E. Wolfson Medical Center, Holon, Israel
| | - Francesco Baschieri
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France
- Institute of Pathophysiology, Innsbruck, Austria
| | - Aude Robert
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France
| | - Mehdi Khaled
- INSERM 1279, Tumor Cell Dynamics, Gustave Roussy, Université Paris-Saclay, Villejuif, France.
| |
Collapse
|
2
|
Apte M. A journey to and with the stars: The pancreatic stellate cell story. Pancreatology 2023; 23:893-899. [PMID: 37973449 DOI: 10.1016/j.pan.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023]
Abstract
The George E Palade Prize is the highest honour awarded by the International Association of Pancreatology, that recognises an individual who has made outstanding contributions to the understanding of the pancreas and pancreatic diseases. The 2023 Palade Prize was awarded to Professor Minoti Apte, University of New South Wales Sydney on September 16, 2023 during the Joint Meeting of the International Association of Pancreatology and the Indian Pancreas Club, held in Delhi, India. This paper summarises her Palade lecture wherein she reflects on her journey as a medical graduate, an academic and a researcher, with a particular focus on her team's pioneering work on pancreatic stellate cell biology and the role of these cells in health and disease. While there has been much progress in this field with the efforts of researchers worldwide, there is much still to be learned; thus it is a topic with ample scope for innovative research with the potential to translate into better outcomes for patients with pancreatic disease.
Collapse
Affiliation(s)
- Minoti Apte
- Pancreatic Research Group, South Western Sydney Clinical Campuses, School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales Sydney and Ingham Institute for Applied Medical Research, Liverpool, Sydney, Australia.
| |
Collapse
|
3
|
Mahdi AF, Nolan J, O’Connor RÍ, Lowery AJ, Allardyce JM, Kiely PA, McGourty K. Collagen-I influences the post-translational regulation, binding partners and role of Annexin A2 in breast cancer progression. Front Oncol 2023; 13:1270436. [PMID: 37941562 PMCID: PMC10628465 DOI: 10.3389/fonc.2023.1270436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/11/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction The extracellular matrix (ECM) has been heavily implicated in the development and progression of cancer. We have previously shown that Annexin A2 is integral in the migration and invasion of breast cancer cells and in the clinical progression of ER-negative breast cancer, processes which are highly influenced by the surrounding tumor microenvironment and ECM. Methods We investigated how modulations of the ECM may affect the role of Annexin A2 in MDA-MB-231 breast cancer cells using western blotting, immunofluorescent confocal microscopy and immuno-precipitation mass spectrometry techniques. Results We have shown that the presence of collagen-I, the main constituent of the ECM, increases the post-translational phosphorylation of Annexin A2 and subsequently causes the translocation of Annexin A2 to the extracellular surface. In the presence of collagen-I, we identified fibronectin as a novel interactor of Annexin A2, using mass spectrometry analysis. We then demonstrated that reducing Annexin A2 expression decreases the degradation of fibronectin by cancer cells and this effect on fibronectin turnover is increased according to collagen-I abundance. Discussion Our results suggest that Annexin A2's role in promoting cancer progression is mediated by collagen-I and Annexin A2 maybe a therapeutic target in the bi-directional cross-talk between cancer cells and ECM remodeling that supports metastatic cancer progression.
Collapse
Affiliation(s)
- Amira F. Mahdi
- School of Medicine, University of Limerick, Limerick, Ireland
- Health Research Institute, University of Limerick, Limerick, Ireland
| | - Joanne Nolan
- School of Medicine, University of Limerick, Limerick, Ireland
- Health Research Institute, University of Limerick, Limerick, Ireland
| | - Ruth Í. O’Connor
- School of Medicine, University of Limerick, Limerick, Ireland
- Health Research Institute, University of Limerick, Limerick, Ireland
| | - Aoife J. Lowery
- Lambe Institute for Translational Research, University of Galway, Galway, Ireland
| | - Joanna M. Allardyce
- Health Research Institute, University of Limerick, Limerick, Ireland
- School of Allied Health, University of Limerick, Limerick, Ireland
| | - Patrick A. Kiely
- School of Medicine, University of Limerick, Limerick, Ireland
- Health Research Institute, University of Limerick, Limerick, Ireland
| | - Kieran McGourty
- Health Research Institute, University of Limerick, Limerick, Ireland
- Science Foundation Ireland Research Centre in Pharmaceuticals (SSPC), University of Limerick, Limerick, Ireland
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, Ireland
| |
Collapse
|
4
|
Buzza MS, Pawar NR, Strong AA, Antalis TM. Intersection of Coagulation and Fibrinolysis by the Glycosylphosphatidylinositol (GPI)-Anchored Serine Protease Testisin. Int J Mol Sci 2023; 24:9306. [PMID: 37298257 PMCID: PMC10252689 DOI: 10.3390/ijms24119306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Hemostasis is a delicate balance between coagulation and fibrinolysis that regulates the formation and removal of fibrin, respectively. Positive and negative feedback loops and crosstalk between coagulation and fibrinolytic serine proteases maintain the hemostatic balance to prevent both excessive bleeding and thrombosis. Here, we identify a novel role for the glycosylphosphatidylinositol (GPI)-anchored serine protease testisin in the regulation of pericellular hemostasis. Using in vitro cell-based fibrin generation assays, we found that the expression of catalytically active testisin on the cell surface accelerates thrombin-dependent fibrin polymerization, and intriguingly, that it subsequently promotes accelerated fibrinolysis. We find that the testisin-dependent fibrin formation is inhibited by rivaroxaban, a specific inhibitor of the central prothrombin-activating serine protease factor Xa (FXa), demonstrating that cell-surface testisin acts upstream of factor X (FX) to promote fibrin formation at the cell surface. Unexpectedly, testisin was also found to accelerate fibrinolysis by stimulating the plasmin-dependent degradation of fibrin and enhancing plasmin-dependent cell invasion through polymerized fibrin. Testisin was not a direct activator of plasminogen, but it is able to induce zymogen cleavage and the activation of pro-urokinase plasminogen activator (pro-uPA), which converts plasminogen to plasmin. These data identify a new proteolytic component that can regulate pericellular hemostatic cascades at the cell surface, which has implications for angiogenesis, cancer biology, and male fertility.
Collapse
Affiliation(s)
- Marguerite S. Buzza
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (N.R.P.); (A.A.S.); (T.M.A.)
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Research and Development Service, VA Maryland Health Care System, Baltimore, MD 21201, USA
| | - Nisha R. Pawar
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (N.R.P.); (A.A.S.); (T.M.A.)
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Amando A. Strong
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (N.R.P.); (A.A.S.); (T.M.A.)
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Toni M. Antalis
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (N.R.P.); (A.A.S.); (T.M.A.)
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Research and Development Service, VA Maryland Health Care System, Baltimore, MD 21201, USA
| |
Collapse
|
5
|
Hosen SMZ, Uddin MN, Xu Z, Buckley BJ, Perera C, Pang TCY, Mekapogu AR, Moni MA, Notta F, Gallinger S, Pirola R, Wilson J, Ranson M, Goldstein D, Apte M. Metastatic phenotype and immunosuppressive tumour microenvironment in pancreatic ductal adenocarcinoma: Key role of the urokinase plasminogen activator (PLAU). Front Immunol 2022; 13:1060957. [PMID: 36591282 PMCID: PMC9794594 DOI: 10.3389/fimmu.2022.1060957] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/22/2022] [Indexed: 12/15/2022] Open
Abstract
Background Previous studies have revealed the role of dysregulated urokinase plasminogen activator (encoded by PLAU) expression and activity in several pathways associated with cancer progression. However, systematic investigation into the association of PLAU expression with factors that modulate PDAC (pancreatic ductal adenocarcinoma) progression is lacking, such as those affecting stromal (pancreatic stellate cell, PSC)-cancer cell interactions, tumour immunity, PDAC subtypes and clinical outcomes from potential PLAU inhibition. Methods This study used an integrated bioinformatics approach to identify prognostic markers correlated with PLAU expression using different transcriptomics, proteomics, and clinical data sets. We then determined the association of dysregulated PLAU and correlated signatures with oncogenic pathways, metastatic phenotypes, stroma, immunosuppressive tumour microenvironment (TME) and clinical outcome. Finally, using an in vivo orthotopic model of pancreatic cancer, we confirmed the predicted effect of inhibiting PLAU on tumour growth and metastasis. Results Our analyses revealed that PLAU upregulation is not only associated with numerous other prognostic markers but also associated with the activation of various oncogenic signalling pathways, aggressive phenotypes relevant to PDAC growth and metastasis, such as proliferation, epithelial-mesenchymal transition (EMT), stemness, hypoxia, extracellular cell matrix (ECM) degradation, upregulation of stromal signatures, and immune suppression in the tumour microenvironment (TME). Moreover, the upregulation of PLAU was directly connected with signalling pathways known to mediate PSC-cancer cell interactions. Furthermore, PLAU upregulation was associated with the aggressive basal/squamous phenotype of PDAC and significantly reduced overall survival, indicating that this subset of patients may benefit from therapeutic interventions to inhibit PLAU activity. Our studies with a clinically relevant orthotopic pancreatic model showed that even short-term PLAU inhibition is sufficient to significantly halt tumour growth and, importantly, eliminate visible metastasis. Conclusion Elevated PLAU correlates with increased aggressive phenotypes, stromal score, and immune suppression in PDAC. PLAU upregulation is also closely associated with the basal subtype type of PDAC; patients with this subtype are at high risk of mortality from the disease and may benefit from therapeutic targeting of PLAU.
Collapse
Affiliation(s)
- S. M. Zahid Hosen
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Md. Nazim Uddin
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Zhihong Xu
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Benjamin J. Buckley
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW, Australia,Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - Chamini Perera
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Tony C. Y. Pang
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Westmead Clinical School, Faculty of Medicine and Health, University of Sydney, The University of Sydney, Sydney, NSW, Australia
| | - Alpha Raj Mekapogu
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Mohammad Ali Moni
- School of Health and Rehabilitation Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, St Lucia, QLD, Australia
| | - Faiyaz Notta
- PanCuRx Translational Research Initiative, Ontario Institute for Cancer Research, Toronto, ON, Canada
| | - Steven Gallinger
- PanCuRx Translational Research Initiative, Ontario Institute for Cancer Research, Toronto, ON, Canada
| | - Ron Pirola
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia
| | - Jeremy Wilson
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia
| | - Marie Ranson
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW, Australia,Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - David Goldstein
- Prince of Wales Clinical School, University of New South Wales, Sydney, NSW, Australia,Department of Medical Oncology, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Minoti Apte
- Pancreatic Research Group, SWS Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW, Australia,Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia,*Correspondence: Minoti Apte,
| |
Collapse
|
6
|
Ferguson TEG, Reihill JA, Martin SL, Walker B. Novel inhibitors and activity-based probes targeting serine proteases. Front Chem 2022; 10:1006618. [PMID: 36247662 PMCID: PMC9555310 DOI: 10.3389/fchem.2022.1006618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Serine proteases play varied and manifold roles in important biological, physiological, and pathological processes. These include viral, bacterial, and parasitic infection, allergic sensitization, tumor invasion, and metastasis. The use of activity-based profiling has been foundational in pinpointing the precise roles of serine proteases across this myriad of processes. A broad range of serine protease-targeted activity-based probe (ABP) chemotypes have been developed and we have recently introduced biotinylated and "clickable" peptides containing P1 N-alkyl glycine arginine N-hydroxy succinimidyl (NHS) carbamates as ABPs for detection/profiling of trypsin-like serine proteases. This present study provides synthetic details for the preparation of additional examples of this ABP chemotype, which function as potent irreversible inhibitors of their respective target serine protease. We describe their use for the activity-based profiling of a broad range of serine proteases including trypsin, the trypsin-like protease plasmin, chymotrypsin, cathepsin G, and neutrophil elastase (NE), including the profiling of the latter protease in clinical samples obtained from patients with cystic fibrosis.
Collapse
Affiliation(s)
| | | | | | - Brian Walker
- Biomolecular Sciences Research Group, School of Pharmacy, Queen’s University Belfast, Belfast, United Kingdom
| |
Collapse
|
7
|
Huo Z, Li X, Zhou J, Fan Y, Wang Z, Zhang Z. Hypomethylation and downregulation of miR-23b-3p are associated with upregulated PLAU: a diagnostic and prognostic biomarker in head and neck squamous cell carcinoma. Cancer Cell Int 2021; 21:564. [PMID: 34702271 PMCID: PMC8549381 DOI: 10.1186/s12935-021-02251-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
Background DNA methylation and miRNA-target genes play an important part in the early development of various tumors and have been studied as tumor biomarkers. Although previous studies have reported a cluster of molecular events (such as aberrant alterations of genomics and epigenetics), little is known of the potential biomarkers for early diagnosis and prognostic evaluation in head and neck squamous cell carcinoma (HNSCC). Methods Multiple bioinformatics tools based on The Cancer Genome Atlas (TCGA) database and clinical samples were applied to evaluate the beneficial biomarkers in HNSCC. We focused on the role of plasminogen activator urokinase (PLAU), including diagnostic and prognostic significance, gene expression analysis, aberrant DNA methylation characteristics, interaction of miRNAs and associated signaling pathways. Results We found that PLAU was aberrantly upregulated in HNSCC, regardless of the mRNA or protein level. The results of receiver operating characteristic (ROC) curve and Cox regression analysis revealed that PLAU was a diagnostic and independent prognostic factor for patients with HNSCC. Hypomethylation of PLAU was closely related to poor survival in HNSCC. Additionally, miR-23b-3p was predicted to target PLAU and was significantly downregulated in HNSCC tissues. Therefore, our findings suggested that PLAU functioned as a promoter in the pathological process of HNSCC. DNA hypomethylation and downregulation of miR-23b-3p were associated with PLAU overexpression. Finally, our findings provided evidence of a significant interaction between PLAU-target and miRNAs-target pathways, indicating that miR-23b-3p suppresses malignant properties of HNSCC by targeting PLAU via Ras/MAPK and Akt/mTOR signaling pathways. Conclusions PLAU is overexpressed and may serve as an independent diagnostic and prognostic biomarker in HNSCC. Hypomethylation and downregulation of miR-23b-3p might account for the oncogenic role of PLAU in HNSCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02251-w.
Collapse
Affiliation(s)
- Zirong Huo
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Ear Institute Shanghai Jiaotong University, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Xiaoguang Li
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Ear Institute Shanghai Jiaotong University, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Jieyu Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Ear Institute Shanghai Jiaotong University, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Yuqin Fan
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Ear Institute Shanghai Jiaotong University, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Zhentao Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. .,Ear Institute Shanghai Jiaotong University, Shanghai, China. .,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
| | - Zhihua Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. .,Ear Institute Shanghai Jiaotong University, Shanghai, China. .,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
| |
Collapse
|
8
|
Garcia JH, Jain S, Aghi MK. Metabolic Drivers of Invasion in Glioblastoma. Front Cell Dev Biol 2021; 9:683276. [PMID: 34277624 PMCID: PMC8281286 DOI: 10.3389/fcell.2021.683276] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/19/2021] [Indexed: 12/02/2022] Open
Abstract
Glioblastoma is a primary malignant brain tumor with a median survival under 2 years. The poor prognosis glioblastoma caries is largely due to cellular invasion, which enables escape from resection, and drives inevitable recurrence. While most studies to date have focused on pathways that enhance the invasiveness of tumor cells in the brain microenvironment as the primary driving forces behind GBM’s ability to invade adjacent tissues, more recent studies have identified a role for adaptations in cellular metabolism in GBM invasion. Metabolic reprogramming allows invasive cells to generate the energy necessary for colonizing surrounding brain tissue and adapt to new microenvironments with unique nutrient and oxygen availability. Historically, enhanced glycolysis, even in the presence of oxygen (the Warburg effect) has dominated glioblastoma research with respect to tumor metabolism. More recent global profiling experiments, however, have identified roles for lipid, amino acid, and nucleotide metabolism in tumor growth and invasion. A thorough understanding of the metabolic traits that define invasive GBM cells may provide novel therapeutic targets for this devastating disease. In this review, we focus on metabolic alterations that have been characterized in glioblastoma, the dynamic nature of tumor metabolism and how it is shaped by interaction with the brain microenvironment, and how metabolic reprogramming generates vulnerabilities that may be ripe for exploitation.
Collapse
Affiliation(s)
- Joseph H Garcia
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Saket Jain
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Manish K Aghi
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, United States
| |
Collapse
|
9
|
Barta JA, Pauley K, Kossenkov AV, McMahon SB. The lung-enriched p53 mutants V157F and R158L/P regulate a gain of function transcriptome in lung cancer. Carcinogenesis 2020; 41:67-77. [PMID: 31067569 PMCID: PMC7316406 DOI: 10.1093/carcin/bgz087] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 04/24/2019] [Accepted: 05/07/2019] [Indexed: 01/03/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths in the USA, and alterations in the tumor suppressor gene TP53 are the most frequent somatic mutation among all histologic subtypes of lung cancer. Mutations in TP53 frequently result in a protein that exhibits not only loss of tumor suppressor capability but also oncogenic gain-of-function (GOF). The canonical p53 hotspot mutants R175H and R273H, for example, confer upon tumors a metastatic phenotype in murine models of mutant p53. To the best of our knowledge, GOF phenotypes of the less often studied V157, R158 and A159 mutants-which occur with higher frequency in lung cancer compared with other solid tumors-have not been defined. In this study, we aimed to define whether the lung mutants are simply equivalent to full loss of the p53 locus, or whether they additionally acquire the ability to drive new downstream effector pathways. Using a publicly available human lung cancer dataset, we characterized patients with V157, R158 and A159 p53 mutations. In addition, we show here that cell lines with mutant p53-V157F, p53-R158L and p53-R158P exhibit a loss of expression of canonical wild-type p53 target genes. Furthermore, these lung-enriched p53 mutants regulate genes not previously linked to p53 function including PLAU. Paradoxically, mutant p53 represses genes associated with increased cell viability, migration and invasion. These findings collectively represent the first demonstration that lung-enriched p53 mutations at V157 and R158 regulate a novel transcriptome in human lung cancer cells and may confer de novo function.
Collapse
Affiliation(s)
- Julie A Barta
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Kristen Pauley
- Department of Biochemistry and Molecular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Andrew V Kossenkov
- Bioinformatics Core Facility, The Wistar Institute, Philadelphia, PA, USA
| | - Steven B McMahon
- Department of Biochemistry and Molecular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| |
Collapse
|
10
|
Sharma B, Parajuli P, Podila R. Rapid detection of urokinase plasminogen activator using flexible paper-based graphene-gold platform. Biointerphases 2020; 15:011004. [PMID: 32019314 PMCID: PMC7064303 DOI: 10.1116/1.5128889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/22/2019] [Accepted: 01/09/2020] [Indexed: 11/17/2022] Open
Abstract
Many studies have shown that urokinase plasminogen activator (uPA) is causally involved in promoting cancer invasion and metastasis. Thus, monitoring uPA levels could be very useful in cancer diagnosis, identification of initial metastasis, and guiding cancer treatment. Here, the authors developed a novel and scalable uPA sensor based on a graphene-gold nanoparticle platform that uses fluorescence of quantum dots to rapidly (<1 h) detect uPA up to 100 pM. Indeed, the authors' sensor is highly selective and showed an ability to sense up to 100 pM uPA even in the presence of complex biological milieu such as the fetal bovine serum.
Collapse
Affiliation(s)
- Bipin Sharma
- Department of Physics and Astronomy, Laboratory of Nano-Biophysics, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina 29634
| | - Prakash Parajuli
- Department of Physics and Astronomy, Laboratory of Nano-Biophysics, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina 29634
| | - Ramakrishna Podila
- Department of Physics and Astronomy, Laboratory of Nano-Biophysics, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina 29634
| |
Collapse
|
11
|
Ai C, Zhang J, Lian S, Ma J, Győrffy B, Qian Z, Han Y, Feng Q. FOXM1 functions collaboratively with PLAU to promote gastric cancer progression. J Cancer 2020; 11:788-794. [PMID: 31949481 PMCID: PMC6959008 DOI: 10.7150/jca.37323] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/04/2019] [Indexed: 12/24/2022] Open
Abstract
Background: Gastric cancer (GC) is one of the main mortality cause worldwide. Previously, we found Forkhead box protein (FOXM1) or Urokinase-type plasminogen activator (PLAU) are independent prognostic markers of GC. This study aims to explore the combining prognostic efficacy and the potential insights underlying additive effect of FOXM1 to PLAU in GC progression through in-silico analyses. Method: The expression of FOXM1 and PLAU were profiled in 33 cancer types using public data. A merged GC expression dataset containing 598 samples was used for evaluating prognostic significance of FOXM1/PLAU. Gene Set Enrichment Analysis (GSEA) was performed to elucidate the mechanisms underlying FOXM1/PLAU promoted GC progression. The Cancer Genome Atlas (TCGA) was used for analyzing the association between FOXM1/PLAU and tumor immune infiltration. Genomic and proteomic differences between FOXM1+PLAU+ and FOXM1-PLAU- groups were also computed using TCGA GC data. Drugs targeting FOXM1/PLAU associated gene expression pattern was analyzed using LINCs database. Results: FOXM1 and PLAU are overexpressed in 17/33 cancer types including GC. Kaplan-Meier analyses indicate that the FOXM1+PLAU+ subgroup have the worst prognosis, while FOXM1-PLAU- subgroup have the best survival. Bioinformatics analysis indicated that FOXM1+PLAU+ associated genes are enriched in TGF-beta, DNA repair and drug resistance signaling pathways; FOXM1 and PLAU expression are negatively correlated with tumor immune infiltration. Genomic and proteomic differences between FOXM1+PLAU+ and FOXM1-PLAU- groups were presented. Data mining from LINCs suggested several chemicals or drugs that could target the gene expression pattern of FOXM1+PLAU+ patients. Conclusion: FOXM1+PLAU+ can serve as effective prognostic biomarkers and potential therapeutic targets for GC. Due to the additive effect of these two genes, screening for drugs or chemicals that targeting the expression patterns PLAU+FOXM1+ subgroup may exert important clinical impact on GC management.
Collapse
Affiliation(s)
- Chao Ai
- Department of Pharmacy, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, P. R. China
| | - Jixin Zhang
- Department of Pathology, Peking University First Hospital, Beijing, China
| | - Shenyi Lian
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital &Institute, Beijing, China
| | - Jie Ma
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Balázs Győrffy
- Momentum Cancer Biomarker Research Group, Institute of Enzymology, Hungarian Academy of Sciences, Budapest, H-1117, Hungary; Second Department of Pediatrics, Semmelweis University, Budapest, H-1094, Hungary
| | - Zhenyuan Qian
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Yong Han
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Qin Feng
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital &Institute, Beijing, China
| |
Collapse
|
12
|
SILAC-Based Quantification of TGFBR2-Regulated Protein Expression in Extracellular Vesicles of Microsatellite Unstable Colorectal Cancers. Int J Mol Sci 2019; 20:ijms20174162. [PMID: 31454892 PMCID: PMC6747473 DOI: 10.3390/ijms20174162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/21/2019] [Accepted: 08/23/2019] [Indexed: 12/13/2022] Open
Abstract
Microsatellite unstable (MSI) colorectal cancers (CRCs) are characterized by mutational inactivation of Transforming Growth Factor Beta Receptor Type 2 (TGFBR2). TGFBR2-deficient CRCs present altered target gene and protein expression. Such cellular alterations modulate the content of CRC-derived extracellular vesicles (EVs). EVs function as couriers of proteins, nucleic acids, and lipids in intercellular communication. At a qualitative level, we have previously shown that TGFBR2 deficiency causes overall alterations in the EV protein content. To deepen the basic understanding of altered protein dynamics, this work aimed to determine TGFBR2-dependent EV protein signatures in a quantitative manner. Using a stable isotope labeling with amino acids in cell culture (SILAC) approach for mass spectrometry-based quantification, 48 TGFBR2-regulated proteins were identified in MSI CRC-derived EVs. Overall, TGFBR2 deficiency caused upregulation of several EV proteins related to the extracellular matrix and nucleosome as well as downregulation of proteasome-associated proteins. The present study emphasizes the general overlap of proteins between EVs and their parental CRC cells but also highlights the impact of TGFBR2 deficiency on EV protein composition. From a clinical perspective, TGFBR2-regulated quantitative differences of protein expression in EVs might nominate novel biomarkers for liquid biopsy-based MSI typing in the future.
Collapse
|
13
|
Liu H, Lin X, Huang T, Song L, Zhu C, Ma H, Long T, Zeng H, Li R, Wang H, Huang Y, Chen L, Wu X. A short peptide reverses the aggressive phenotype of prostate cancer cells. Eur J Pharmacol 2018; 838:129-137. [PMID: 30196111 DOI: 10.1016/j.ejphar.2018.09.013] [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: 05/22/2018] [Revised: 09/05/2018] [Accepted: 09/05/2018] [Indexed: 11/17/2022]
Abstract
Previous studies have demonstrated that fibroblast growth factor 8b (FGF8b) is up-regulated in a large proportion of prostate cancer patients, and plays a key role in the aggressive progress of prostate cancer. Herein, we investigated the effects of a short peptide derived from the gN helix domain of FGF8b on the metastatic behaviors of prostate cancer cells. The results demonstrated that the synthetic peptide might reverse the effects of FGF8b on cell proliferation, migration and invasion by suppressing the activation of MAPK and Akt signaling cascades, and reducing the expressions of the metastasis-related proteins, resulting in suppression of the aggressive phenotype of the prostate cancer cells. Collectively, these results underline the therapeutic potential of the FGF8b mimic peptide in advanced prostate cancer.
Collapse
Affiliation(s)
- Hongjiao Liu
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Xiaomian Lin
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Tao Huang
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Li Song
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Cairong Zhu
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China.
| | - Hongmin Ma
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Tianzhu Long
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Huixuan Zeng
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Rongzhen Li
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Heng Wang
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Yishan Huang
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Liankuai Chen
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China
| | - Xiaoping Wu
- Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China.
| |
Collapse
|
14
|
Kalinkova L, Zmetakova I, Smolkova B, Minarik G, Sedlackova T, Horvathova Kajabova V, Cierna Z, Mego M, Fridrichova I. Decreased methylation in the SNAI2 and ADAM23 genes associated with de-differentiation and haematogenous dissemination in breast cancers. BMC Cancer 2018; 18:875. [PMID: 30189837 PMCID: PMC6127923 DOI: 10.1186/s12885-018-4783-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 08/29/2018] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND In breast cancer (BC), deregulation of DNA methylation leads to aberrant expressions and functions of key regulatory genes. In our study, we investigated the relationship between the methylation profiles of genes associated with cancer invasivity and clinico-pathological parameters. In detail, we studied differences in the methylation levels between BC patients with haematogenous and lymphogenous cancer dissemination. METHODS We analysed samples of primary tumours (PTs), lymph node metastases (LNMs) and peripheral blood cells (PBCs) from 59 patients with sporadic disseminated BC. Evaluation of the DNA methylation levels of six genes related to invasivity, ADAM23, uPA, CXCL12, TWIST1, SNAI1 and SNAI2, was performed by pyrosequencing. RESULTS Among the cancer-specific methylated genes, we found lower methylation levels of the SNAI2 gene in histologic grade 3 tumours (OR = 0.61; 95% CI, 0.39-0.97; P = 0.038) than in fully or moderately differentiated cancers. We also evaluated the methylation profiles in patients with different cancer cell dissemination statuses (positivity for circulating tumour cells (CTCs) and/or LNMs). We detected the significant association between reduced DNA methylation of ADAM23 in PTs and presence of CTCs in the peripheral blood of patients (OR = 0.45; 95% CI, 0.23-0.90; P = 0.023). CONCLUSION The relationships between the decreased methylation levels of the SNAI2 and ADAM23 genes and cancer de-differentiation and haematogenous dissemination, respectively, indicate novel functions of those genes in the invasive processes. After experimental validation of the association between the lower values of SNAI2 and ADAM23 methylation and clinical features of aggressive BCs, these methylation profiles could improve the management of metastatic disease.
Collapse
Affiliation(s)
- Lenka Kalinkova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, v.v.i., Dubravska cesta 9, 845 05, Bratislava, Slovak Republic
| | - Iveta Zmetakova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, v.v.i., Dubravska cesta 9, 845 05, Bratislava, Slovak Republic
| | - Bozena Smolkova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, v.v.i., Dubravska cesta 9, 845 05, Bratislava, Slovak Republic
| | - Gabriel Minarik
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08, Bratislava, Slovak Republic
| | - Tatiana Sedlackova
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08, Bratislava, Slovak Republic
| | - Viera Horvathova Kajabova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, v.v.i., Dubravska cesta 9, 845 05, Bratislava, Slovak Republic
| | - Zuzana Cierna
- Institute of Pathological Anatomy, Faculty of Medicine, Comenius University, University Hospital, Sasinkova 4, 811 08, Bratislava, Slovak Republic
| | - Michal Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, National Cancer Institute, Klenova 1, 83310, Bratislava, Slovak Republic
| | - Ivana Fridrichova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, v.v.i., Dubravska cesta 9, 845 05, Bratislava, Slovak Republic.
| |
Collapse
|
15
|
Cell surface protease activation during RAS transformation: Critical role of the plasminogen receptor, S100A10. Oncotarget 2018; 7:47720-47737. [PMID: 27351226 PMCID: PMC5216974 DOI: 10.18632/oncotarget.10279] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 06/12/2016] [Indexed: 12/28/2022] Open
Abstract
The link between oncogenic RAS expression and the acquisition of the invasive phenotype has been attributed to alterations in cellular activities that control degradation of the extracellular matrix. Oncogenic RAS-mediated upregulation of matrix metalloproteinase 2 (MMP-2), MMP-9 and urokinase-type plasminogen activator (uPA) is critical for invasion through the basement membrane and extracellular matrix. The uPA converts cell surface-bound plasminogen to plasmin, a process that is regulated by the binding of plasminogen to specific receptors on the cell surface, however, the identity of the plasminogen receptors that function in this capacity is unclear. We have observed that transformation of cancer cells with oncogenic forms of RAS increases plasmin proteolytic activity by 2- to 4-fold concomitant with a 3-fold increase in cell invasion. Plasminogen receptor profiling revealed RAS-dependent increases in both S100A10 and cytokeratin 8. Oncogenic RAS expression increased S100A10 gene expression which resulted in an increase in S100A10 protein levels. Analysis with the RAS effector-loop mutants that interact specifically with Raf, Ral GDS pathways highlighted the importance of the RalGDS pathways in the regulation of S100A10 gene expression. Depletion of S100A10 from RAS-transformed cells resulted in a loss of both cellular plasmin generation and invasiveness. These results strongly suggest that increases in cell surface levels of S100A10, by oncogenic RAS, plays a critical role in RAS-stimulated plasmin generation, and subsequently, in the invasiveness of oncogenic RAS expressing cancer cells.
Collapse
|
16
|
Ma J, Qi G, Xu J, Ni H, Xu W, Ru G, Zhao Z, Xu W, He X. Overexpression of forkhead box M1 and urokinase-type plasminogen activator in gastric cancer is associated with cancer progression and poor prognosis. Oncol Lett 2017; 14:7288-7296. [PMID: 29344165 PMCID: PMC5754915 DOI: 10.3892/ol.2017.7136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 07/03/2017] [Indexed: 01/26/2023] Open
Abstract
Forkhead box M1 (FOXM1) and urokinase-type plasminogen activator (uPA) are overexpressed and associated with the pathogenesis of multiple types of human malignancy. The aims of the present study were to investigate FOXM1 and uPA expression levels in human gastric cancer using tissue microarray techniques; determining their association with clinicopathological characteristics as well as their prognostic value. Tissue microarray blocks, comprising 436 gastric cancer cases and 92 non-cancerous adjacent normal gastric tissues, were analyzed for FOXM1 and uPA protein expression levels using immunohistochemistry. The results were analyzed statistically in association with various clinicopathological characteristics and overall survival rates. FOXM1 and uPA were detected in 78.67 (343/436) and 83.26% (363/436) of cancer samples, respectively. FOXM1 and uPA were not expressed in the 92 normal gastric tissue samples. In gastric cancer, FOXM1 and uPA levels were associated with tumor size, depth of invasion, tumor-node-metastasis (TNM) stage, lymph node metastasis, vessel invasion and distant metastases. The overall survival rate was significantly decreased in patients expressing FOXM1 and uPA compared with FOXM1- and uPA-negative patients. Coxs multivariate analysis revealed that age, depth of invasion and expression levels of FOXM1 and uPA are independent predictors of survival in patients with gastric cancer. These results indicated that increased FOXM1 and uPA expression levels are associated with the invasive and metastatic processes in human gastric cancer, and inversely associated with patient prognosis. Therefore, FOXM1 and uPA may serve as novel prognostic markers independent of, but supplementing, the TNM staging system.
Collapse
Affiliation(s)
- Jie Ma
- Department of Pathology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Guangwei Qi
- Department of Pathology, Hangzhou Children's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Ji Xu
- Department of Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Haibing Ni
- Department of Surgery, Tongde Hospital of Zhejiang, Hangzhou, Zhejiang 310012, P.R. China
| | - Wulin Xu
- Department of Respiratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Guoqing Ru
- Department of Pathology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Zhongsheng Zhao
- Department of Pathology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Wenjuan Xu
- Department of Pathology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Xujun He
- Key Laboratory of Gastroenterology of Zhejiang, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| |
Collapse
|
17
|
Wyatt RA, Trieu NPV, Crawford BD. Zebrafish Xenograft: An Evolutionary Experiment in Tumour Biology. Genes (Basel) 2017; 8:E220. [PMID: 28872594 PMCID: PMC5615353 DOI: 10.3390/genes8090220] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/27/2017] [Accepted: 08/29/2017] [Indexed: 12/17/2022] Open
Abstract
Though the cancer research community has used mouse xenografts for decades more than zebrafish xenografts, zebrafish have much to offer: they are cheap, easy to work with, and the embryonic model is relatively easy to use in high-throughput assays. Zebrafish can be imaged live, allowing us to observe cellular and molecular processes in vivo in real time. Opponents dismiss the zebrafish model due to the evolutionary distance between zebrafish and humans, as compared to mice, but proponents argue for the zebrafish xenograft's superiority to cell culture systems and its advantages in imaging. This review places the zebrafish xenograft in the context of current views on cancer and gives an overview of how several aspects of this evolutionary disease can be addressed in the zebrafish model. Zebrafish are missing homologs of some human proteins and (of particular interest) several members of the matrix metalloproteinase (MMP) family of proteases, which are known for their importance in tumour biology. This review draws attention to the implicit evolutionary experiment taking place when the molecular ecology of the xenograft host is significantly different than that of the donor.
Collapse
Affiliation(s)
- Rachael A Wyatt
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Nhu P V Trieu
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Bryan D Crawford
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| |
Collapse
|
18
|
Vangestel C, Thomae D, Van Soom J, Ides J, wyffels L, Pauwels P, Stroobants S, Van der Veken P, Magdolen V, Joossens J, Augustyns K, Staelens S. Preclinical evaluation of [111In]MICA-401, an activity-based probe for SPECT imaging ofin vivouPA activity. CONTRAST MEDIA & MOLECULAR IMAGING 2016; 11:448-458. [DOI: 10.1002/cmmi.1706] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 06/15/2016] [Accepted: 06/30/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Christel Vangestel
- Molecular Imaging Center Antwerp; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
- Department of Nuclear Medicine; Antwerp University Hospital; Wilrijkstraat 10 B-2650 Edegem Belgium
| | - David Thomae
- Molecular Imaging Center Antwerp; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
- Department of Medicinal Chemistry; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Jeroen Van Soom
- Department of Medicinal Chemistry; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Johan Ides
- Center for Oncological Research; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Leonie wyffels
- Molecular Imaging Center Antwerp; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
- Department of Nuclear Medicine; Antwerp University Hospital; Wilrijkstraat 10 B-2650 Edegem Belgium
| | - Patrick Pauwels
- Center for Oncological Research; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
- Department of Pathology; Antwerp University Hospital; Wilrijkstraat 10 B-2650 Edegem Belgium
| | - Sigrid Stroobants
- Molecular Imaging Center Antwerp; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
- Department of Nuclear Medicine; Antwerp University Hospital; Wilrijkstraat 10 B-2650 Edegem Belgium
| | - Pieter Van der Veken
- Department of Medicinal Chemistry; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Viktor Magdolen
- Klinische Forschergruppe der Frauenklinik; Klinikum rechts der Isar der TU München; 81675 Munich Germany
| | - Jurgen Joossens
- Department of Medicinal Chemistry; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Koen Augustyns
- Department of Medicinal Chemistry; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Steven Staelens
- Molecular Imaging Center Antwerp; University of Antwerp; Universiteitsplein 1 B-2610 Antwerp Belgium
| |
Collapse
|
19
|
Minder P, Zajac E, Quigley JP, Deryugina EI. EGFR regulates the development and microarchitecture of intratumoral angiogenic vasculature capable of sustaining cancer cell intravasation. Neoplasia 2016; 17:634-49. [PMID: 26408256 PMCID: PMC4674488 DOI: 10.1016/j.neo.2015.08.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 07/28/2015] [Accepted: 08/10/2015] [Indexed: 12/16/2022] Open
Abstract
Many malignant characteristics of cancer cells are regulated through pathways induced by the tyrosine kinase activity of the epidermal growth factor receptor (EGFR). Herein, we show that besides directly affecting the biology of cancer cells per se, EGFR also regulates the primary tumor microenvironment. Specifically, our findings demonstrate that both the expression and signaling activity of EGFR are required for the induction of a distinct intratumoral vasculature capable of sustaining tumor cell intravasation, a critical rate-limiting step in the metastatic cascade. An intravasation-sustaining mode of intratumoral angiogenic vessels depends on high levels of tumor cell EGFR and the interplay between EGFR-regulated production of interleukin 8 by tumor cells, interleukin-8–induced influx of tumor-infiltrating neutrophils delivering their unique matrix metalloproteinase-9, and neutrophil matrix metalloproteinase-9–dependent release of the vascular permeability and endothelial growth factor, VEGF. Our data indicate that through VEGF-mediated disruption of endothelial layer integrity and increase of intratumoral vasculature permeability, EGFR activity significantly facilitates active intravasation of cancer cells. Therefore, this study unraveled an important but overlooked function of EGFR in cancer, namely, its ability to create an intravasation-sustaining microenvironment within the developing primary tumor by orchestrating several interrelated processes required for the initial steps of cancer metastasis through vascular routes. Our findings also suggest that EGFR-targeted therapies might be more effective when implemented in cancer patients with early-staged primary tumors containing a VEGF-dependent angiogenic vasculature. Accordingly, early EGFR inhibition combined with various anti-VEGF approaches could synergistically suppress tumor cell intravasation through inhibiting the highly permeable angiogenic vasculature induced by EGFR-overexpressing aggressive cancer cells.
Collapse
Affiliation(s)
- Petra Minder
- The Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA
| | - Ewa Zajac
- The Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA
| | - James P Quigley
- The Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA
| | - Elena I Deryugina
- The Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA.
| |
Collapse
|
20
|
Abstract
The process of entering the bloodstream, intravasation, is a necessary step in the development of distant metastases. The focus of this review is on the pathways and molecules that have been identified as being important based on current in vitro and in vivo assays for intravasation. Properties of the vasculature which are important for intravasation include microvessel density and also diameter of the vasculature, with increased intravasation correlating with increased vessel diameter in some tumors. TGFB signaling can enhance intravasation at least in part through induction of EMT, and we discuss other TGFB target genes that are important for intravasation. In addition to TGFB signaling, a number of studies have demonstrated that activation of EGF receptor family members stimulates intravasation, with downstream signaling through PI3K, N-WASP, RhoA, and WASP to induce invadopodia. With respect to proteases, there is strong evidence for contributions by uPA/uPAR, while the roles of MMPs in intravasation may be more tumor specific. Other cells including macrophages, fibroblasts, neutrophils, and platelets can also play a role in enhancing tumor cell intravasation. The technology is now available to interrogate the expression patterns of circulating tumor cells, which will provide an important reality check for the model systems being used. With a better understanding of the mechanisms underlying intravasation, the goal is to provide new opportunities for improving prognosis as well as potentially developing new treatments.
Collapse
Affiliation(s)
- Serena P H Chiang
- Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Ramon M Cabrera
- Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Jeffrey E Segall
- Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, New York
| |
Collapse
|
21
|
Deryugina EI, Quigley JP. Tumor angiogenesis: MMP-mediated induction of intravasation- and metastasis-sustaining neovasculature. Matrix Biol 2015; 44-46:94-112. [PMID: 25912949 PMCID: PMC5079283 DOI: 10.1016/j.matbio.2015.04.004] [Citation(s) in RCA: 294] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 04/08/2015] [Accepted: 04/09/2015] [Indexed: 12/21/2022]
Abstract
Metastasis is a distinct stage of cancer progression that requires the development of angiogenic blood vessels serving as conduits for tumor cell dissemination. An accumulated body of evidence indicates that metastasis-supporting neovasculature should possess certain structural characteristics allowing for the process of tumor cell intravasation, an active entry of cancer cells into the vessel interior. It appears that the development of tumor vessels with lumens of a distinctive size and support of these vessels by a discontinuous pericyte coverage constitute critical microarchitectural requirements to: (a) provide accessible points for vessel wall penetration by primary tumor cells; (b) provide enough lumen space for a tumor cell or cell aggregate upon intravasation; and (c) allow for sufficient rate of blood flow to carry away intravasated cells from the primary tumor to the next, proximal or distal site. This review will primarily focus on the functional roles of matrix metalloproteinases (MMPs), which catalytically trigger the development of an intravasation-sustaining neovasculature at the early stages of tumor growth and are also required for the maintenance of a metastasis-supporting state of blood vessels at later stages of cancer progression.
Collapse
Affiliation(s)
- Elena I Deryugina
- Department of Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States.
| | - James P Quigley
- Department of Cell and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States.
| |
Collapse
|
22
|
Honda N, Kariyama Y, Hazama H, Ishii T, Kitajima Y, Inoue K, Ishizuka M, Tanaka T, Awazu K. Optical properties of tumor tissues grown on the chorioallantoic membrane of chicken eggs: tumor model to assay of tumor response to photodynamic therapy. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:125001. [PMID: 26662299 DOI: 10.1117/1.jbo.20.12.125001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 11/05/2015] [Indexed: 05/21/2023]
Abstract
Herein, the optical adequacy of a tumor model prepared with tumor cells grown on the chorioallantoic membrane (CAM) of a chicken egg is evaluated as an alternative to the mouse tumor model to assess the optimal irradiation conditions in photodynamic therapy (PDT). The optical properties of CAM and mouse tumor tissues were measured with a double integrating sphere and the inverse Monte Carlo technique in the 350- to 1000-nm wavelength range. The hemoglobin and water absorption bands observed in the CAM tumor tissue (10 eggs and 10 tumors) are equal to that of the mouse tumor tissue (8 animals and 8 tumors). The optical intersubject variability of the CAM tumor tissues meets or exceeds that of the mouse tumor tissues, and the reduced scattering coefficient spectra of CAM tumor tissues can be equated with those of mouse tumor tissues. These results confirm that the CAM tumor model is a viable alternative to the mouse tumor model, especially for deriving optimal irradiation conditions in PDT.
Collapse
Affiliation(s)
- Norihiro Honda
- Osaka University, Institute for Academic Initiatives, 1-1 Yamadaoka, Suita, Osaka 565-0871, JapanbOsaka University, Graduate School of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoichiro Kariyama
- Osaka University, Graduate School of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hisanao Hazama
- Osaka University, Graduate School of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takuya Ishii
- SBI Pharmaceuticals Co., Ltd., Izumi Garden Tower 20F, 1-6-1, Roppongi, Minato-ku, Tokyo 106-6020, Japan
| | - Yuya Kitajima
- SBI Pharmaceuticals Co., Ltd., Izumi Garden Tower 20F, 1-6-1, Roppongi, Minato-ku, Tokyo 106-6020, Japan
| | - Katsushi Inoue
- SBI Pharmaceuticals Co., Ltd., Izumi Garden Tower 20F, 1-6-1, Roppongi, Minato-ku, Tokyo 106-6020, Japan
| | - Masahiro Ishizuka
- SBI Pharmaceuticals Co., Ltd., Izumi Garden Tower 20F, 1-6-1, Roppongi, Minato-ku, Tokyo 106-6020, Japan
| | - Tohru Tanaka
- SBI Pharmaceuticals Co., Ltd., Izumi Garden Tower 20F, 1-6-1, Roppongi, Minato-ku, Tokyo 106-6020, Japan
| | - Kunio Awazu
- Osaka University, Graduate School of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, JapandOsaka University, Graduate School of Frontier Biosciences, 1-3 Yamadaoka, Suita, Osaka 565-0871, JapaneOsaka University, The Global Center for Medical Engineerin
| |
Collapse
|
23
|
Hodgson MC, Deryugina EI, Suarez E, Lopez SM, Lin D, Xue H, Gorlov IP, Wang Y, Agoulnik IU. INPP4B suppresses prostate cancer cell invasion. Cell Commun Signal 2014. [PMID: 25248616 DOI: 10.1186/preaccept-2663637391256502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND INPP4B and PTEN dual specificity phosphatases are frequently lost during progression of prostate cancer to metastatic disease. We and others have previously shown that loss of INPP4B expression correlates with poor prognosis in multiple malignancies and with metastatic spread in prostate cancer. RESULTS We demonstrate that de novo expression of INPP4B in highly invasive human prostate carcinoma PC-3 cells suppresses their invasion both in vitro and in vivo. Using global gene expression analysis, we found that INPP4B regulates a number of genes associated with cell adhesion, the extracellular matrix, and the cytoskeleton. Importantly, de novo expressed INPP4B suppressed the proinflammatory chemokine IL-8 and induced PAK6. These genes were regulated in a reciprocal manner following downregulation of INPP4B in the independently derived INPP4B-positive LNCaP prostate cancer cell line. Inhibition of PI3K/Akt pathway, which is highly active in both PC-3 and LNCaP cells, did not reproduce INPP4B mediated suppression of IL-8 mRNA expression in either cell type. In contrast, inhibition of PKC signaling phenocopied INPP4B-mediated inhibitory effect on IL-8 in either prostate cancer cell line. In PC-3 cells, INPP4B overexpression caused a decline in the level of metastases associated BIRC5 protein, phosphorylation of PKC, and expression of the common PKC and IL-8 downstream target, COX-2. Reciprocally, COX-2 expression was increased in LNCaP cells following depletion of endogenous INPP4B. CONCLUSION Taken together, we discovered that INPP4B is a novel suppressor of oncogenic PKC signaling, further emphasizing the role of INPP4B in maintaining normal physiology of the prostate epithelium and suppressing metastatic potential of prostate tumors.
Collapse
|
24
|
Abstract
Background INPP4B and PTEN dual specificity phosphatases are frequently lost during progression of prostate cancer to metastatic disease. We and others have previously shown that loss of INPP4B expression correlates with poor prognosis in multiple malignancies and with metastatic spread in prostate cancer. Results We demonstrate that de novo expression of INPP4B in highly invasive human prostate carcinoma PC-3 cells suppresses their invasion both in vitro and in vivo. Using global gene expression analysis, we found that INPP4B regulates a number of genes associated with cell adhesion, the extracellular matrix, and the cytoskeleton. Importantly, de novo expressed INPP4B suppressed the proinflammatory chemokine IL-8 and induced PAK6. These genes were regulated in a reciprocal manner following downregulation of INPP4B in the independently derived INPP4B-positive LNCaP prostate cancer cell line. Inhibition of PI3K/Akt pathway, which is highly active in both PC-3 and LNCaP cells, did not reproduce INPP4B mediated suppression of IL-8 mRNA expression in either cell type. In contrast, inhibition of PKC signaling phenocopied INPP4B-mediated inhibitory effect on IL-8 in either prostate cancer cell line. In PC-3 cells, INPP4B overexpression caused a decline in the level of metastases associated BIRC5 protein, phosphorylation of PKC, and expression of the common PKC and IL-8 downstream target, COX-2. Reciprocally, COX-2 expression was increased in LNCaP cells following depletion of endogenous INPP4B. Conclusion Taken together, we discovered that INPP4B is a novel suppressor of oncogenic PKC signaling, further emphasizing the role of INPP4B in maintaining normal physiology of the prostate epithelium and suppressing metastatic potential of prostate tumors. Electronic supplementary material The online version of this article (doi:10.1186/s12964-014-0061-y) contains supplementary material, which is available to authorized users.
Collapse
|
25
|
Cancer subclonal genetic architecture as a key to personalized medicine. Neoplasia 2014; 15:1410-20. [PMID: 24403863 DOI: 10.1593/neo.131972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 02/08/2023] Open
Abstract
The future of personalized oncological therapy will likely rely on evidence-based medicine to integrate all of the available evidence to delineate the most efficacious treatment option for the patient. To undertake evidence-based medicine through use of targeted therapy regimens, identification of the specific underlying causative mutation(s) driving growth and progression of a patient's tumor is imperative. Although molecular subtyping is important for planning and treatment, intraclonal genetic diversity has been recently highlighted as having significant implications for biopsy-based prognosis. Overall, delineation of the clonal architecture of a patient's cancer and how this will impact on the selection of the most efficacious therapy remain a topic of intense interest.
Collapse
|
26
|
Duffy MJ, McGowan PM, Harbeck N, Thomssen C, Schmitt M. uPA and PAI-1 as biomarkers in breast cancer: validated for clinical use in level-of-evidence-1 studies. Breast Cancer Res 2014; 16:428. [PMID: 25677449 PMCID: PMC4423643 DOI: 10.1186/s13058-014-0428-4] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Urokinase plasminogen activator (uPA) is an extracellular matrix-degrading protease involved in cancer invasion and metastasis, interacting with plasminogen activator inhibitor-1 (PAI-1), which was originally identified as a blood-derived endogenous fast-acting inhibitor of uPA. At concentrations found in tumor tissue, however, both PAI-1 and uPA promote tumor progression and metastasis. Consistent with the causative role of uPA and PAI-1 in cancer dissemination, several retrospective and prospective studies have shown that elevated levels of uPA and PAI-1 in breast tumor tissue are statistically independent and potent predictors of poor patient outcome, including adverse outcome in the subset of breast cancer patients with lymph node-negative disease. In addition to being prognostic, high levels of uPA and PAI-1 have been shown to predict benefit from adjuvant chemotherapy in patients with early breast cancer. The unique clinical utility of uPA/PAI-1 as prognostic biomarkers in lymph node-negative breast cancer has been confirmed in two independent level-of-evidence-1 studies (that is, in a randomized prospective clinical trial in which the biomarker evaluation was the primary purpose of the trial and in a pooled analysis of individual data from retrospective and prospective studies). Thus, uPA and PAI-1 are among the best validated prognostic biomarkers currently available for lymph node-negative breast cancer, their main utility being the identification of lymph node-negative patients who have HER-2-negative tumors and who can be safely spared the toxicity and costs of adjuvant chemotherapy. Recently, a phase II clinical trial using the low-molecular-weight uPA inhibitor WX-671 reported activity in metastatic breast cancer.
Collapse
|
27
|
Ides J, Thomae D, wyffels L, Vangestel C, Messagie J, Joossens J, Lardon F, Van der Veken P, Augustyns K, Stroobants S, Staelens S. Synthesis and in vivo preclinical evaluation of an 18F labeled uPA inhibitor as a potential PET imaging agent. Nucl Med Biol 2014; 41:477-87. [DOI: 10.1016/j.nucmedbio.2014.03.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 03/06/2014] [Accepted: 03/21/2014] [Indexed: 01/08/2023]
|
28
|
Lun YZ, Wang XL, Feng J. Purification and identification of the Kazal domain of a novel serine protease inhibitor, Hespintor, through a bacterial (Escherichia coli) expression system. Int J Mol Med 2014; 34:321-6. [PMID: 24821237 DOI: 10.3892/ijmm.2014.1778] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/24/2014] [Indexed: 11/05/2022] Open
Abstract
In this study, Hespintor, a protein with unknown function, was screened and obtained from the hepatoblastoma cell line, HepG2, using suppression subtractive hybridization (SSH). Sequence analysis demonstrated that the protein is a novel secreting member of the Kazal-type serine protease inhibitor (serpin) family, and possesses the basic structure of serpin, which is highly homologous to esophageal cancer-related gene 2 (ECRG2). To further elucidate its biological functions, the Hespintor protein was expressed and purified. The coding sequence of the Hespintor Kazal domain was cloned into the prokaryotic expression vector, pET-40b(+), and was then transformed into host bacteria (Escherichia coli) Rosetta (DE3). The optimally expressed recombinant fusion protein, Hespintor-Kazal, with a molecular weight of 42 kDa was obtained by 0.25 mmol/l isopropyl β-D-1-thiogalactopyranoside (IPTG) induction at 30˚C for 5 h. Western blot analysis was performed to further confirm the specificity of the recombinant protein, Hespintor-Kazal. The recombinant fusion protein, Hespintor‑Kazal, was expressed in the host bacteria in the form of an inclusion body. Two-step metal chelating affinity chromatography and anion exchange chromatography columns were used to purify the recombinant protein. The preliminary activity identification results revealed that the purified recombinant fusion protein, Hespintor-Kazal, specifically inhibited the hydrolysis activity of trypsin, suggesting that Hespintor has potential value as a novel antitumor drug.
Collapse
Affiliation(s)
- Yong-Zhi Lun
- Liaoning Provincial University Key Laboratory of Biophysics, College of Medicine, Dalian University, Dalian, Liaoning 116622, P.R. China
| | - Xue-Lei Wang
- Liaoning Provincial University Key Laboratory of Biophysics, College of Medicine, Dalian University, Dalian, Liaoning 116622, P.R. China
| | - Jie Feng
- Liaoning Provincial University Key Laboratory of Biophysics, College of Medicine, Dalian University, Dalian, Liaoning 116622, P.R. China
| |
Collapse
|
29
|
Evaluation of 12-lipoxygenase (12-LOX) and plasminogen activator inhibitor 1 (PAI-1) as prognostic markers in prostate cancer. BIOMED RESEARCH INTERNATIONAL 2014; 2014:102478. [PMID: 24783193 PMCID: PMC3982265 DOI: 10.1155/2014/102478] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 02/11/2014] [Indexed: 12/14/2022]
Abstract
In carcinoma of prostate, a causative role of platelet 12-lipoxygenase (12-LOX) and plasminogen activator inhibitor 1 (PAI-1) for tumor progression has been firmly established in tumor and/or adjacent tissue. Our goal was to investigate if 12-LOX and/or PAI-1 in patient's plasma could be used to predict outcome of the disease. The study comprised 149 patients (age 70±9) divided into two groups: a study group with carcinoma confirmed by positive biopsy of prostate (n=116) and a reference group (n=33) with benign prostatic hyperplasia (BPH). The following parameters were determined by the laboratory test in plasma or platelet-rich plasma: protein level of 12-LOX, PAI-1, thromboglobulin (TGB), prostate specific antigen (PSA), C-reactive protein (CRP), hemoglobin (HGB, and hematocrit (HCT), as well as red (RBC) and white blood cells (WBC), number of platelets (PLT), international normalized ratio of blood clotting (INR), and activated partial thromboplastin time (APTT). The only difference of significance was noticed in the concentration of 12-LOX in platelet rich plasma, which was lower in cancer than in BPH group. Standardization to TGB and platelet count increases the sensitivity of the test that might be used as a biomarker to assess risk for prostate cancer in periodically monitored patients.
Collapse
|
30
|
Asuthkar S, Stepanova V, Lebedeva T, Holterman AL, Estes N, Cines DB, Rao JS, Gondi CS. Multifunctional roles of urokinase plasminogen activator (uPA) in cancer stemness and chemoresistance of pancreatic cancer. Mol Biol Cell 2013; 24:2620-32. [PMID: 23864708 PMCID: PMC3756915 DOI: 10.1091/mbc.e12-04-0306] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is almost always lethal. One of the underlying reasons for this lethality is believed to be the presence of cancer stem cells (CSC), which impart chemoresistance and promote recurrence, but the mechanisms responsible are unclear. Recently the poor prognosis of PDAC has been correlated with increased expression of urokinase plasminogen activator (uPA). In the present study we examine the role of uPA in the generation of PDAC CSC. We observe a subset of cells identifiable as a side population (SP) when sorted by flow cytometry of MIA PaCa-2 and PANC-1 pancreatic cancer cells that possess the properties of CSC. A large fraction of these SP cells are CD44 and CD24 positive, are gemcitabine resistant, possess sphere-forming ability, and exhibit increased tumorigenicity, known characteristics of cancer stemness. Increased tumorigenicity and gemcitabine resistance decrease after suppression of uPA. We observe that uPA interacts directly with transcription factors LIM homeobox-2 (Lhx2), homeobox transcription factor A5 (HOXA5), and Hey to possibly promote cancer stemness. uPA regulates Lhx2 expression by suppressing expression of miR-124 and p53 expression by repressing its promoter by inactivating HOXA5. These results demonstrate that regulation of gene transcription by uPA contributes to cancer stemness and clinical lethality.
Collapse
Affiliation(s)
- Swapna Asuthkar
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL 61605, USA
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Overcoming intratumor heterogeneity of polygenic cancer drug resistance with improved biomarker integration. Neoplasia 2013; 14:1278-89. [PMID: 23308059 DOI: 10.1593/neo.122096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 12/11/2012] [Accepted: 12/11/2012] [Indexed: 12/14/2022] Open
Abstract
Improvements in technology and resources are helping to advance our understanding of cancer-initiating events as well as factors involved with tumor progression, adaptation, and evasion of therapy. Tumors are well known to contain diverse cell populations and intratumor heterogeneity affords neoplasms with a diverse set of biologic characteristics that can be used to evolve and adapt. Intratumor heterogeneity has emerged as a major hindrance to improving cancer patient care. Polygenic cancer drug resistance necessitates reconsidering drug designs to include polypharmacology in pursuit of novel combinatorial agents having multitarget activity to overcome the diverse and compensatory signaling pathways in which cancer cells use to survive and evade therapy. Advances will require integration of different biomarkers such as genomics and imaging to provide for more adequate elucidation of the spatially varying location, type, and extent of diverse intratumor signaling molecules to provide for a rationale-based personalized cancer medicine strategy.
Collapse
|
32
|
Juncker-Jensen A, Deryugina EI, Rimann I, Zajac E, Kupriyanova TA, Engelholm LH, Quigley JP. Tumor MMP-1 activates endothelial PAR1 to facilitate vascular intravasation and metastatic dissemination. Cancer Res 2013; 73:4196-211. [PMID: 23687338 DOI: 10.1158/0008-5472.can-12-4495] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Intravasation, the active entry of primary tumor cells into the vasculature, remains the least studied step in the metastatic cascade. Protease-mediated escape and stromal invasion of tumor cells represent widely accepted processes leading up to the intravasation step. However, molecular factors that contribute directly to tumor cell vascular penetration have not been identified. In this study, the in vivo role of the collagenolytic protease, MMP-1, in cancer cell intravasation and metastasis was analyzed by using a highly disseminating variant of human HEp3 epidermoid carcinoma, HEp3-hi/diss. Although naturally acquired or experimentally induced MMP-1 deficiency substantially suppressed HEp3-hi/diss intravasation, supplementation of recombinant MMP-1 to MMP-1-silenced primary tumors restored their impaired vascular dissemination. Surprisingly, abrogation of MMP-1 production and activity did not significantly affect HEp3-hi/diss migration or matrix invasion, suggesting noncollagenolytic mechanisms underlying MMP-1-dependent cell intravasation. In support of such noncollagenolytic mechanisms, MMP-1 silencing in HEp3-hi/diss cells modulated the microarchitecture and integrity of the angiogenic vasculature in a novel microtumor model. Concomitantly, MMP-1 deficiency led to decreased levels of intratumoral vascular permeability, tumor cell intravasation, and metastatic dissemination. Taking advantage of PAR1 deficiency of HEp3-hi/diss cells, we further show that endothelial PAR1 is a putative nontumor-cell/nonmatrix target, activation of which by carcinoma-produced MMP-1 regulates endothelial permeability and transendothelial migration. The inhibitory effects of specific PAR1 antagonists in live animals have also indicated that the mechanisms of MMP-1-dependent vascular permeability in tumors involve endothelial PAR1 activation. Together, our findings mechanistically underscore the contribution of a tumor MMP-1/endothelial PAR1 axis to actual intravasation events manifested by aggressive carcinoma cells.
Collapse
Affiliation(s)
- Anna Juncker-Jensen
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | | | | | | | | | | | | |
Collapse
|
33
|
Abstract
An important regulatory mechanism of serine proteases is the proteolytic conversion of the inactive pro-enzyme, or zymogen, into the active enzyme. This activation process is generally considered an irreversible process. In the present study, we demonstrate that an active enzyme can be converted back into its zymogen form. We determined the crystal structure of uPA (urokinase-type plasminogen activator) in complex with an inhibitory antibody, revealing that the antibody 'rezymogenizes' already activated uPA. The present study demonstrates a new regulatory mechanism of protease activity, which is also an extreme case of protein allostery. Mechanistically, the antibody binds a single surface-exposed loop, named the autolysis loop, thereby preventing the stabilization of uPA in its active conformation. We argue that this autolysis loop is a key structural element for rezymogenation of other proteases, and will be a new target site for pharmacological intervention with serine protease activity.
Collapse
|
34
|
Sánchez-Tilló E, de Barrios O, Siles L, Amendola PG, Darling DS, Cuatrecasas M, Castells A, Postigo A. ZEB1 Promotes invasiveness of colorectal carcinoma cells through the opposing regulation of uPA and PAI-1. Clin Cancer Res 2013; 19:1071-82. [PMID: 23340304 DOI: 10.1158/1078-0432.ccr-12-2675] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Carcinoma cells enhance their invasive capacity through dedifferentiation and dissolution of intercellular adhesions. A key activator of this process is the ZEB1 transcription factor, which is induced in invading cancer cells by canonical Wnt signaling (β-catenin/TCF4). Tumor invasiveness also entails proteolytic remodeling of the peritumoral stroma. This study aimed to investigate the potential regulation by ZEB1 of the plasminogen proteolytic system constituted by the urokinase plasminogen activator (uPA), and its inhibitor, plasminogen activator inhibitor-1 (PAI-1). EXPERIMENTAL DESIGN Through multiple experimental approaches, colorectal carcinoma (CRC) cell lines and samples from human primary CRC and ZEB1 (-/-) mice were used to examine ZEB1-mediated regulation of uPA and PAI-1 at the protein, mRNA, and transcriptional level. RESULTS ZEB1 regulates uPA and PAI-1 in opposite directions: induces uPA and inhibits PAI-1. In vivo expression of uPA depends on ZEB1 as it is severely reduced in the developing intestine of ZEB1 null (-/-) mice. Optimal induction of uPA by Wnt signaling requires ZEB1 expression. ZEB1 binds to the uPA promoter and activates its transcription through a mechanism implicating the histone acetyltransferase p300. In contrast, inhibition of PAI-1 by ZEB1 does not involve transcriptional repression but rather downregulation of mRNA stability. ZEB1-mediated tumor cell migration and invasion depend on its induction of uPA. ZEB1 coexpresses with uPA in cancer cells at the invasive front of CRCs. CONCLUSIONS ZEB1 promotes tumor invasiveness not only via induction in cancer cells of a motile dedifferentiated phenotype but also by differential regulation of genes involved in stroma remodeling.
Collapse
Affiliation(s)
- Ester Sánchez-Tilló
- Group of Transcriptional Regulation of Gene Expression, Department of Oncology and Hematology, IDIBAPS, Barcelona, Spain
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Casar B, Rimann I, Kato H, Shattil SJ, Quigley JP, Deryugina EI. In vivo cleaved CDCP1 promotes early tumor dissemination via complexing with activated β1 integrin and induction of FAK/PI3K/Akt motility signaling. Oncogene 2012. [PMID: 23208492 DOI: 10.1038/onc.2012.547] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Specific cleavage of the transmembrane molecule, CUB domain-containing protein-1 (CDCP1), by plasmin-like serine proteases induces outside-in signal transduction that facilitates early stages of spontaneous metastasis leading to tumor cell intravasation, namely cell escape from the primary tumor, stromal invasion and transendothelial migration. We identified active β1 integrin as a biochemical and functional partner of the membrane-retained 70-kDa CDCP1 fragment, newly generated from its full-length 135-kDa precursor though proteolytic cleavage by serine proteases. Both in cell cultures and in live animals, active β1 integrin complexed preferentially with functionally activated, phosphorylated 70-kDa CDCP1. Complexing of β1 integrin the 70-kDa with CDCP1 fragment induced intracellular phosphorylation signaling, involving focal adhesion kinase-1 (FAK) and PI3 kinase (PI3K)-dependent Akt activation. Thus, inhibition of FAK/PI3K activities by specific inhibitors as well as short-hairpin RNA downregulation of β1 integrin significantly reduced FAK/Akt phosphorylation under conditions where CDCP1 was processed by serine proteases, indicating that FAK/PI3K/Akt pathway operates downstream of cleaved CDCP1 complexed with β1 integrin. Furthermore, this complex-dependent signaling correlated positively with high levels of tumor cell intravasation and dissemination. Correspondingly, abrogation in vivo of CDCP1 cleavage either by unique cleavage-blocking monoclonal antibody 10-D7 or by inhibition of proteolytic activity of plasmin-like serine proteases with aprotinin prevented β1 integrin/CDCP1 complexing and downstream FAK/Akt signaling concomitant with significant reduction of stromal invasion and spontaneous metastasis. Therefore, β1 integrin appears to serve as a motility-regulating partner mediating cross-talk between proteolytically cleaved, membrane-retained CDCP1 and members of FAK/PI3K/Akt pathway. This CDCP1 cleavage-induced signaling cascade constitutes a unique mechanism, independent of extracellular matrix remodeling, whereby a proteolytically cleaved CDCP1 regulates in vivo locomotion and metastasis of tumor cells through β1 integrin partnering. Our findings indicate that CDCP1 cleavage, occurring at the apex of a β1 integrin/FAK/PI3K/Akt signaling cascade, may represent a therapeutic target for CDCP1-positive cancers.
Collapse
Affiliation(s)
- B Casar
- The Cell Biology Department, The Scripps Research Institute, La Jolla, CA, USA
| | - I Rimann
- The Cell Biology Department, The Scripps Research Institute, La Jolla, CA, USA
| | - H Kato
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - S J Shattil
- 1] Department of Medicine, University of California San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - J P Quigley
- The Cell Biology Department, The Scripps Research Institute, La Jolla, CA, USA
| | - E I Deryugina
- The Cell Biology Department, The Scripps Research Institute, La Jolla, CA, USA
| |
Collapse
|
36
|
Cell surface remodeling by plasmin: a new function for an old enzyme. J Biomed Biotechnol 2012; 2012:564259. [PMID: 23097597 PMCID: PMC3477900 DOI: 10.1155/2012/564259] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 06/01/2012] [Indexed: 12/23/2022] Open
Abstract
Plasmin, one of the most potent and reactive serine proteases, is involved in various physiological processes, including embryo development, thrombolysis, wound healing and cancer progression. The proteolytic activity of plasmin is tightly regulated through activation of its precursor, plasminogen, only at specific times and in defined locales as well as through inhibition of active plasmin by its abundant natural inhibitors. By exploiting the plasminogen activating system and overexpressing distinct components of the plasminogen activation cascade, such as pro-uPA, uPAR and plasminogen receptors, malignant cells can enhance the generation of plasmin which in turn, modifies the tumor microenvironment to sustain cancer progression. While plasmin-mediated degradation and modification of extracellular matrix proteins, release of growth factors and cytokines from the stroma as well as activation of several matrix metalloproteinase zymogens, all have been a focus of cancer research studies for decades, the ability of plasmin to cleave transmembrane molecules and thereby to generate functionally important cleaved products which induce outside-in signal transduction, has just begun to receive sufficient attention. Herein, we highlight this relatively understudied, but important function of the plasmin enzyme as it is generated de novo at the interface between cross-talking cancer and host cells.
Collapse
|
37
|
Botkjaer KA, Deryugina EI, Dupont DM, Gårdsvoll H, Bekes EM, Thuesen CK, Chen Z, Chen Z, Ploug M, Quigley JP, Andreasen PA. Targeting tumor cell invasion and dissemination in vivo by an aptamer that inhibits urokinase-type plasminogen activator through a novel multifunctional mechanism. Mol Cancer Res 2012; 10:1532-43. [PMID: 23038812 DOI: 10.1158/1541-7786.mcr-12-0349] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Data accumulated over the latest two decades have established that the serine protease urokinase-type plasminogen activator (uPA) is a potential therapeutic target in cancer. When designing inhibitors of the proteolytic activity of serine proteases, obtaining sufficient specificity is problematic, because the topology of the proteases' active sites are highly similar. In an effort to generate highly specific uPA inhibitors with new inhibitory modalities, we isolated uPA-binding RNA aptamers by screening a library of 35 nucleotides long 2'-fluoro-pyrimidine RNA molecules using a version of human pro-uPA lacking the epidermal growth factor-like and kringle domains as bait. One pro-uPA-binding aptamer sequence, referred to as upanap-126, proved to be highly specific for human uPA. Upanap-126 delayed the proteolytic conversion of human pro-uPA to active uPA, but did not inhibit plasminogen activation catalyzed by two-chain uPA. The aptamer also inhibited the binding of pro-uPA to uPAR and the binding of vitronectin to the preformed pro-uPA/uPAR complex, both in cell-free systems and on cell surfaces. Furthermore, upanap-126 inhibited human tumor cell invasion in vitro in the Matrigel assay and in vivo in the chick embryo assay of cell escape from microtumors. Finally, upanap-126 significantly reduced the levels of tumor cell intravasation and dissemination in the chick embryo model of spontaneous metastasis. Together, our findings show that usage of upanap-126 represents a novel multifunctional mechanistic modality for inhibition of uPA-dependent processes involved in tumor cell spread.
Collapse
Affiliation(s)
- Kenneth A Botkjaer
- Department of Molecular Biology and Genetics, Aarhus University, Copenhagen, Denmark
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Fang H, Placencio VR, DeClerck YA. Protumorigenic activity of plasminogen activator inhibitor-1 through an antiapoptotic function. J Natl Cancer Inst 2012; 104:1470-84. [PMID: 22984202 PMCID: PMC3529616 DOI: 10.1093/jnci/djs377] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 07/20/2012] [Accepted: 07/24/2012] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Plasminogen activator inhibitor-1 (PAI-1) is a protease inhibitor but is paradoxically associated with poor outcomes in cancer patients. However, the mechanisms of its effects on tumor cells have not been explored. METHODS Endogenous PAI-1 in human tumor cell lines (HT-1080, A549, HCT-116, and MDA-MB-231) was suppressed by small interfering RNAs (siRNAs) and PAI-039, a small molecule inhibitor of PAI-1, and the effects on apoptosis were examined. Tumorigenicity of PAI-1 knockdown (KD) tumor cells was examined in immunodeficient PAI-1 wild-type and knockout (KO) mice (9-15 per group), and event-free survival was analyzed by the Kaplan-Meier method. The effect of PAI-1 suppression on HT-1080 xenotransplanted tumors was evaluated for cell proliferation, apoptosis, and angiogenesis. All statistical tests were two-sided. RESULTS Genetic and pharmacological inhibition of PAI-1 in the four tumor cell lines increased spontaneous apoptosis (mean fold increase relative to control: HT-1080, siRNA#1, mean = 4.0, 95% CI = 2.6 to 5.3, P < .001; siRNA#2, mean = 2.6, 95% CI = 2.4 to 2.9, P < .001, Student t test), which was blocked in the presence of recombinant PAI-1, a caspase-8 inhibitor, or Fas/FasL neutralizing antibodies and was partially attenuated by a plasmin inhibitor-aprotinin. PAI-1 KO mice implanted with PAI-1 KD HT-1080 cells had decreased tumorigenesis and prolonged survival compared with control mice (P = .002, log-rank test), and their tumors exhibited decreased cell proliferation and angiogenesis and increased apoptosis. Furthermore, five of 15 PAI-1 KO mice implanted with PAI-1 KD HT-1080 cells never developed tumors. CONCLUSIONS These data suggest that PAI-1 exerts a protective effect against tumor cell apoptosis by a mechanism that, in part, involves plasmin activation and inhibition of Fas/Fas-L-mediated apoptosis and may be a promising therapeutic target.
Collapse
Affiliation(s)
- Hua Fang
- Division of Hematology-Oncology, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | | |
Collapse
|
39
|
Chick chorioallantoic membrane (CAM) assay as an in vivo model to study the effect of newly identified molecules on ovarian cancer invasion and metastasis. Int J Mol Sci 2012; 13:9959-9970. [PMID: 22949841 PMCID: PMC3431839 DOI: 10.3390/ijms13089959] [Citation(s) in RCA: 239] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/27/2012] [Accepted: 08/02/2012] [Indexed: 01/08/2023] Open
Abstract
The majority of ovarian cancer patients present with advanced disease and despite aggressive treatment, prognosis remains poor. Significant improvement in ovarian cancer survival will require the development of more effective molecularly targeted therapeutics. Commonly, mouse models are used for the in vivo assessment of potential new therapeutic targets in ovarian cancer. However, animal models are costly and time consuming. Other models, such as the chick embryo chorioallantoic membrane (CAM) assay, are therefore an attractive alternative. CAM assays have been widely used to study angiogenesis and tumor invasion of colorectal, prostate and brain cancers. However, there have been limited studies that have used CAM assays to assess ovarian cancer invasion and metastasis. We have therefore developed a CAM assay protocol to monitor the metastatic properties of ovarian cancer cells (OVCAR-3, SKOV-3 and OV-90) and to study the effect of potential therapeutic molecules in vivo. The results from the CAM assay are consistent with cancer cell motility and invasion observed in in vitro assays. Our results demonstrate that the CAM assay is a robust and cost effective model to study ovarian cancer cell metastasis. It is therefore a very useful in vivo model for screening of potential novel therapeutics.
Collapse
|
40
|
The interconnectedness of cancer cell signaling. Neoplasia 2012; 13:1183-93. [PMID: 22241964 DOI: 10.1593/neo.111746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 12/14/2011] [Accepted: 12/14/2011] [Indexed: 11/18/2022] Open
Abstract
The elegance of fundamental and applied research activities have begun to reveal a myriad of spatial and temporal alterations in downstream signaling networks affected by cell surface receptor stimulation including G protein-coupled receptors and receptor tyrosine kinases. Interconnected biochemical pathways serve to integrate and distribute the signaling information throughout the cell by orchestration of complex biochemical circuits consisting of protein interactions and covalent modification processes. It is clear that scientific literature summarizing results from both fundamental and applied scientific research activities has served to provide a broad foundational biologic database that has been instrumental in advancing our continued understanding of underlying cancer biology. This article reflects on historical advances and the role of innovation in the competitive world of grant-sponsored research.
Collapse
|