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Minz AP, Mohapatra D, Dutta M, Sethi M, Parida D, Mohapatra AP, Mishra S, Kar S, Sasmal PK, Senapati S. Statins abrogate gemcitabine-induced PD-L1 expression in pancreatic cancer-associated fibroblasts and cancer cells with improved therapeutic outcome. Cancer Immunol Immunother 2023; 72:4261-4278. [PMID: 37926727 DOI: 10.1007/s00262-023-03562-9] [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: 06/18/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
A combination of chemotherapy with immunotherapy has been proposed to have better clinical outcomes in Pancreatic Ductal Adenocarcinoma (PDAC). On the other hand, chemotherapeutics is known to have certain unwanted effects on the tumor microenvironment that may mask the expected beneficial effects of immunotherapy. Here, we have investigated the effect of gemcitabine (GEM), on two immune checkpoint proteins (PD-L1 and PD-L2) expression in cancer associated fibroblasts (CAFs) and pancreatic cancer cells (PCCs). Findings of in vitro studies conducted by using in-culture activated mouse pancreatic stellate cells (mPSCs) and human PDAC patients derived CAFs demonstrated that GEM significantly induces PD-L1 and PD-L2 expression in these cells. Moreover, GEM induced phosphorylation of STAT1 and production of multiple known PD-L1-inducing secretory proteins including IFN-γ in CAFs. Upregulation of PD-L1 in PSCs/CAFs upon GEM treatment caused T cell inactivation and apoptosis in vitro. Importantly, Statins suppressed GEM-induced PD-L1 expression both in CAFs and PCCs while abrogating the inactivation of T-cells caused by GEM-treated PSCs/CAFs. Finally, in an immunocompetent syngeneic orthotopic mouse pancreatic tumor model, simvastatin and GEM combination therapy significantly reduced intra-tumor PD-L1 expression and noticeably reduced the overall tumor burden and metastasis incidence. Together, the findings of this study have provided experimental evidence that illustrates potential unwanted side effects of GEM that could hamper the effectiveness of this drug as mono and/or combination therapy. At the same time the findings also suggest use of statins along with GEM will help in overcoming these shortcomings and warrant further clinical investigation.
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Affiliation(s)
- Aliva Prity Minz
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Debasish Mohapatra
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- CV Raman Global University, Bhubaneswar, Odisha, India
| | - Madhuri Dutta
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
| | - Manisha Sethi
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Deepti Parida
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Amlan Priyadarshee Mohapatra
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Swayambara Mishra
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Salona Kar
- Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Prakash K Sasmal
- Department of General Surgery, All India Institute of Medical Sciences, Bhubaneswar, India
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2
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Saadh MJ, Baher H, Li Y, Chaitanya M, Arias-Gonzáles JL, Allela OQB, Mahdi MH, Carlos Cotrina-Aliaga J, Lakshmaiya N, Ahjel S, Amin AH, Gilmer Rosales Rojas G, Ameen F, Ahsan M, Akhavan-Sigari R. The bioengineered and multifunctional nanoparticles in pancreatic cancer therapy: Bioresponisive nanostructures, phototherapy and targeted drug delivery. ENVIRONMENTAL RESEARCH 2023; 233:116490. [PMID: 37354932 DOI: 10.1016/j.envres.2023.116490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/18/2023] [Accepted: 06/21/2023] [Indexed: 06/26/2023]
Abstract
The multidisciplinary approaches in treatment of cancer appear to be essential in term of bringing benefits of several disciplines and their coordination in tumor elimination. Because of the biological and malignant features of cancer cells, they have ability of developing resistance to conventional therapies such as chemo- and radio-therapy. Pancreatic cancer (PC) is a malignant disease of gastrointestinal tract in which chemotherapy and radiotherapy are main tools in its treatment, and recently, nanocarriers have been emerged as promising structures in its therapy. The bioresponsive nanocarriers are able to respond to pH and redox, among others, in targeted delivery of cargo for specific treatment of PC. The loading drugs on the nanoparticles that can be synthetic or natural compounds, can help in more reduction in progression of PC through enhancing their intracellular accumulation in cancer cells. The encapsulation of genes in the nanoparticles can protect against degradation and promotes intracellular accumulation in tumor suppression. A new kind of therapy for cancer is phototherapy in which nanoparticles can stimulate both photothermal therapy and photodynamic therapy through hyperthermia and ROS overgeneration to trigger cell death in PC. Therefore, synergistic therapy of phototherapy with chemotherapy is performed in accelerating tumor suppression. One of the important functions of nanotechnology is selective targeting of PC cells in reducing side effects on normal cells. The nanostructures are capable of being surface functionalized with aptamers, proteins and antibodies to specifically target PC cells in suppressing their progression. Therefore, a specific therapy for PC is provided and future implications for diagnosis of PC is suggested.
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Affiliation(s)
- Mohamed J Saadh
- Faculty of Pharmacy, Middle East University, Amman, 11831, Jordan; Applied Science Research Center. Applied Science Private University, Amman, Jordan
| | - Hala Baher
- Department of Radiology and Ultrasonography Techniques, College of Medical Techniques, Al-Farahidi University, Baghdad, Iraq
| | - Yuanji Li
- Institute of Electrical Engineering, Yanshan University, Qinhuangdao, 066004, China
| | - Mvnl Chaitanya
- Department of Pharmacognosy, School of Pharmacy, Lovely Professional University, Phagwara, Punjab, 144001, India
| | - José Luis Arias-Gonzáles
- Department of Social Sciences, Faculty of Social Studies, University of British Columbia, Vancouver, Canada
| | | | | | | | - Natrayan Lakshmaiya
- Department of Mechanical Engineering, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Salam Ahjel
- Department of Pharmacy, Al-Zahrawi University College, Karbala, Iraq
| | - Ali H Amin
- Zoology Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | | | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Muhammad Ahsan
- Department of Measurememts and Control Systems, Silesian University of Technology, Gliwice, 44-100, Poland.
| | - Reza Akhavan-Sigari
- Department of Neurosurgery, University Medical Center Tuebingen, Germany; Department of Health Care Management and Clinical Research, Collegium Humanum Warsaw Management University, Warsaw, Poland
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3
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Roy-Luzarraga M, Reynolds LE, de Luxán-Delgado B, Maiques O, Wisniewski L, Newport E, Rajeeve V, Drake RJ, Gómez-Escudero J, Richards FM, Weller C, Dormann C, Meng YM, Vermeulen PB, Saur D, Sanz-Moreno V, Wong PP, Géraud C, Cutillas PR, Hodivala-Dilke K. Suppression of Endothelial Cell FAK Expression Reduces Pancreatic Ductal Adenocarcinoma Metastasis after Gemcitabine Treatment. Cancer Res 2022; 82:1909-1925. [PMID: 35350066 PMCID: PMC9381116 DOI: 10.1158/0008-5472.can-20-3807] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/07/2022] [Accepted: 03/25/2022] [Indexed: 02/02/2023]
Abstract
Despite substantial advances in the treatment of solid cancers, resistance to therapy remains a major obstacle to prolonged progression-free survival. Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive cancers, with a high level of liver metastasis. Primary PDAC is highly hypoxic, and metastases are resistant to first-line treatment, including gemcitabine. Recent studies have indicated that endothelial cell (EC) focal adhesion kinase (FAK) regulates DNA-damaging therapy-induced angiocrine factors and chemosensitivity in primary tumor models. Here, we show that inducible loss of EC-FAK in both orthotopic and spontaneous mouse models of PDAC is not sufficient to affect primary tumor growth but reduces liver and lung metastasis load and improves survival rates in gemcitabine-treated, but not untreated, mice. EC-FAK loss did not affect primary tumor angiogenesis, tumor blood vessel leakage, or early events in metastasis, including the numbers of circulating tumor cells, tumor cell homing, or metastatic seeding. Phosphoproteomics analysis showed a downregulation of the MAPK, RAF, and PAK signaling pathways in gemcitabine-treated FAK-depleted ECs compared with gemcitabine-treated wild-type ECs. Moreover, low levels of EC-FAK correlated with increased survival and reduced relapse in gemcitabine-treated patients with PDAC, supporting the clinical relevance of these findings. Altogether, we have identified a new role of EC-FAK in regulating PDAC metastasis upon gemcitabine treatment that impacts outcome. SIGNIFICANCE These findings establish the potential utility of combinatorial endothelial cell FAK targeting together with gemcitabine in future clinical applications to control metastasis in patients with pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Marina Roy-Luzarraga
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Louise E. Reynolds
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Beatriz de Luxán-Delgado
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Oscar Maiques
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Laura Wisniewski
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Emma Newport
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Vinothini Rajeeve
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Rebecca J.G. Drake
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Jesús Gómez-Escudero
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Frances M. Richards
- Translational Medicine Operations, Astrazeneca Oncology, Darwin Building, Cambridge Science Park, Milton Road, Cambridge, United Kingdom
| | - Céline Weller
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Christof Dormann
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Ya-Ming Meng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Peter B. Vermeulen
- Department of Oncological Research, Translational Cancer Research Unit, Oncology Center GZA—GZA Hospitals St. Augustinus and University of Antwerp, Antwerp, Belgium
| | - Dieter Saur
- Division of Translational Cancer Research, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg and Chair of Translational Cancer Research and Institute for Experimental Cancer Therapy, Klinikum rechts der Isar, School of Medicine, Technische Universität München, München, Germany
| | - Victoria Sanz-Moreno
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Ping-Pui Wong
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cyrill Géraud
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Pedro R. Cutillas
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Kairbaan Hodivala-Dilke
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
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4
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Xi Y, Jing Z, Haihong L, Yizhen J, Weili G, Shuwen H. Analysis of T lymphocyte-related biomarkers in pancreatic cancer. Pancreatology 2020; 20:1502-1510. [PMID: 32952042 DOI: 10.1016/j.pan.2020.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/14/2020] [Accepted: 09/05/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Pancreatic cancer remains one of the most lethal cancers. OBJECTIVE This study aimed to analyze T cell-related biomarkers and their molecular network in pancreatic cancer. METHODS RNAseq sequencing data and clinical data of pancreatic cancer were obtained from TCGA database. The STromal and Immune cells in MAlignant Tumours using Expression data (ESTIMATE) algorithm was used to screen the DEGs related to the tumor immune cells. The pearson correlation analysis were used to analyze the relationships between DEGs and T cells. Additionally, the T cell-related DEGs were subjected to protein-protein interaction, competing endogenous RNA (ceRNA), and chemical small molecule-target network construction. Furthermore, the prognosis-associated DEGs were screened. RESULTS A total of 412 stromal score-associated and 312 immune score-associated DEGs were obtained. From these DEGs, 50 CD4+ T cell-related genes and 13 CD8+ T cell-related genes were selected. The PPI networks associated with immune cell-related genes were constructed and found that CD22, SELL, and OLR1 had higher degrees in the PPI network. The number of ceRNA regulatory relation pairs obtained from CD4+ T cells and CD8+ T cells were 59 and 48, respectively. Additionally, both CD4+ T cell- and CD8+ T cell-related genes predicted 29 small molecules. CXCL9 and GIMAP7 were screened out from CD4+ T cell-related genes, which were related with the survival of pancreatic cancer. CONCLUSION We mapped T cell-related gene profile in pancreatic cancer and constructed their potential regulatory network.
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Affiliation(s)
- Yang Xi
- Department of Oncology, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University. Address: No. 198 Hongqi Road, Huzhou, Zhejiang Province, 313000, China.
| | - Zhuang Jing
- Graduate School of Nursing, Huzhou university. Address: No. 1 Bachelor Road, Huzhou, Zhejiang Province, 313000, China.
| | - Liao Haihong
- Department of Oncology, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University. Address: No. 198 Hongqi Road, Huzhou, Zhejiang Province, 313000, China.
| | - Jiang Yizhen
- Department of Oncology, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University. Address: No. 198 Hongqi Road, Huzhou, Zhejiang Province, 313000, China.
| | - Gao Weili
- Department of Thyroid Surgery, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University. Address: No. 198 Hongqi Road, Huzhou, Zhejiang Province, 313000, China.
| | - Han Shuwen
- Department of Oncology, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University. Address: No. 198 Hongqi Road, Huzhou, Zhejiang Province, 313000, China.
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5
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Khan MA, Srivastava SK, Zubair H, Patel GK, Arora S, Khushman M, Carter JE, Gorman GS, Singh S, Singh AP. Co-targeting of CXCR4 and hedgehog pathways disrupts tumor-stromal crosstalk and improves chemotherapeutic efficacy in pancreatic cancer. J Biol Chem 2020; 295:8413-8424. [PMID: 32358063 DOI: 10.1074/jbc.ra119.011748] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer (PC) remains a therapeutic challenge because of its intrinsic and extrinsic chemoresistance mechanisms. Here, we report that C-X-C motif chemokine receptor 4 (CXCR4) and hedgehog pathways cooperate in PC chemoresistance via bidirectional tumor-stromal crosstalk. We show that when PC cells are co-cultured with pancreatic stellate cells (PSCs) they are significantly more resistant to gemcitabine toxicity than those grown in monoculture. We also demonstrate that this co-culture-induced chemoresistance is abrogated by inhibition of the CXCR4 and hedgehog pathways. Similarly, the co-culture-induced altered expression of genes in PC cells associated with gemcitabine metabolism, antioxidant defense, and cancer stemness is also reversed upon CXCR4 and hedgehog inhibition. We have confirmed the functional impact of these genetic alterations by measuring gemcitabine metabolites, reactive oxygen species production, and sphere formation in vehicle- or gemcitabine-treated monocultures and co-cultured PC cells. Treatment of orthotopic pancreatic tumor-bearing mice with gemcitabine alone or in combination with a CXCR4 antagonist (AMD3100) or hedgehog inhibitor (GDC-0449) displays reduced tumor growth. Notably, we show that the triple combination treatment is the most effective, resulting in nearly complete suppression of tumor growth. Immunohistochemical analysis of Ki67 and cleaved caspase-3 confirm these findings from in vivo imaging and tumor measurements. Our findings provide preclinical and mechanistic evidence that a combination of gemcitabine treatment with targeted inhibition of both the CXCR4 and hedgehog pathways improves outcomes in a PC mouse model.
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Affiliation(s)
- Mohammad Aslam Khan
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama.,Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Sanjeev Kumar Srivastava
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama.,Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Haseeb Zubair
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama.,Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Girijesh Kumar Patel
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Sumit Arora
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Moh'd Khushman
- Department of Medical Oncology, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - James Elliot Carter
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama
| | | | - Seema Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama.,Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama
| | - Ajay Pratap Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama .,Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama
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6
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Khan MA, Zubair H, Anand S, Srivastava SK, Singh S, Singh AP. Dysregulation of metabolic enzymes in tumor and stromal cells: Role in oncogenesis and therapeutic opportunities. Cancer Lett 2020; 473:176-185. [PMID: 31923436 DOI: 10.1016/j.canlet.2020.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/12/2019] [Accepted: 01/03/2020] [Indexed: 01/15/2023]
Abstract
Altered cellular metabolism is a hallmark of cancer. Metabolic rewiring in cancer cells occurs due to the activation of oncogenes, inactivation of tumor suppressor genes, and/or other adaptive changes in cell signaling pathways. Furthermore, altered metabolism is also reported in tumor-corrupted stromal cells as a result of their interaction with cancer cells or due to their adaptation in the dynamic tumor microenvironment. Metabolic alterations are associated with dysregulation of metabolic enzymes and tumor-stromal metabolic crosstalk is vital for the progressive malignant journey of the tumor cells. Therefore, several therapies targeting metabolic enzymes have been evaluated and/or are being investigated in preclinical and clinical studies. In this review, we discuss some important metabolic enzymes that are altered in tumor and/or stromal cells, and focus on their role in supporting tumor growth. Moreover, we also discuss studies carried out in various cancers to target these metabolic abnormalities for therapeutic exploitation.
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Affiliation(s)
- Mohammad Aslam Khan
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Haseeb Zubair
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Shashi Anand
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Sanjeev Kumar Srivastava
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Seema Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, USA
| | - Ajay Pratap Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA; Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, USA.
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7
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Deshmukh SK, Tyagi N, Khan MA, Srivastava SK, Al-Ghadhban A, Dugger K, Carter JE, Singh S, Singh AP. Gemcitabine treatment promotes immunosuppressive microenvironment in pancreatic tumors by supporting the infiltration, growth, and polarization of macrophages. Sci Rep 2018; 8:12000. [PMID: 30097594 PMCID: PMC6086900 DOI: 10.1038/s41598-018-30437-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/30/2018] [Indexed: 02/08/2023] Open
Abstract
Chemotherapy-induced immunosuppression poses an additional challenge to its limited efficacy in pancreatic cancer (PC). Here we investigated the effect of gemcitabine on macrophages, which are the first line of immune-defense mechanisms. We observed an increased presence of macrophages in orthotopic human pancreatic tumor xenografts from mice treated with gemcitabine as compared to those from vehicle only-treated mice. Conditioned media from gemcitabine-treated PC cells (Gem-CM) promoted growth, migration and invasion of RAW264.7 macrophage. In addition, Gem-CM also induced upregulation of M2-polarized macrophage markers, arginase-1 and TGF-β1. Cytokine profiling of gemcitabine-treated PC cells identified IL-8 as the most differentially-expressed cytokine. Incubation of Gem-CM with IL-8 neutralizing antibody diminished its ability to induce growth, migration and invasion of RAW264.7 macrophages, but did not abrogate their M2 polarization. Together, our findings identify IL-8 as an important mediator in the gemcitabine-induced infiltration of macrophages within the pancreatic tumor microenvironment and suggest the requirement of additional mechanism(s) for macrophage polarization.
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Affiliation(s)
- Sachin Kumar Deshmukh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Nikhil Tyagi
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Mohammad Aslam Khan
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Sanjeev Kumar Srivastava
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA.,Division of Cell Biology and Genetics, Tatva Biosciences, Coastal Innovation Hub, 600 Clinic Drive, 3rd Floor, Mobile, AL, 36688, USA
| | - Ahmed Al-Ghadhban
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Kari Dugger
- Department of Clinical and Diagnostic Sciences, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - James Elliot Carter
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, USA
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA. .,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, USA.
| | - Ajay Pratap Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA. .,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, USA.
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8
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Xie C, Xu X, Wang X, Wei S, Shao L, Chen J, Cai J, Jia L. Cyclooxygenase-2 induces angiogenesis in pancreatic cancer mediated by prostaglandin E 2. Oncol Lett 2018; 16:940-948. [PMID: 29963167 PMCID: PMC6019925 DOI: 10.3892/ol.2018.8786] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/26/2018] [Indexed: 12/29/2022] Open
Abstract
The purpose of the present study was to elucidate the effects of cyclooxygenase 2 (COX-2) on the expression of vascular endothelial growth factor (VEGF) and prostaglandin E2 (PGE2) in pancreatic cancer in vitro and in vivo, and to clarify the potential mechanism of COX-2-induced angiogenesis of pancreatic cancer. The study analysis was conducted in the pancreatic cancer PC-3 cell line. The expression of COX-2 and VEGF in human pancreatic cancer tissue was analyzed by immunohistochemistry. Angiogenesis was detected using immunohistochemistry with anti-collagen IV antibodies, and was calculated according to the microvascular density (MVD). In vitro analysis was performed using ELISA or radioimmunoassay (RIA). The effect of exogenous PGE2 on the downregulation of VEGF by Celebrex was also assessed. In vivo analysis was performed using western blotting or RIA. Concurrently, MVD was also investigated in nude mice using immunohistochemistry with anti-collagen IV antibodies. COX-2 was overexpressed in pancreatic cancer tissues, with an overall positive rate of 87.5%. There was a positive association between the expression of COX-2 and MVD. The in vitro study indicated that Celebrex suppressed the expression of VEGF and PGE2 in PC-3 cells in a dose- and time-dependent manner, while exogenous PGE2 rescued the expression of VEGF, which was suppressed by Celebrex, in a dose-dependent manner. The in vivo study revealed that the administration of Celebrex to xenograft nude mice significantly inhibited the expression of VEGF and PGE2. These data provide evidence that PGE2 may be an important mediator between COX-2 and VEGF expression in the process of angiogenesis in pancreatic cancer.
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Affiliation(s)
- Chuangao Xie
- Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Xuanfu Xu
- Department of Gastroenterology, The Tenth People's Hospital of Tongji University, Shanghai 200072, P.R. China
| | - Xingpeng Wang
- Department of Gastroenterology, The First Affiliated Hospital of Shanghai Jiaotong University, Shanghai 201620, P.R. China
| | - Shumei Wei
- Department of Pathology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Liming Shao
- Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Jiamin Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Jianting Cai
- Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Litao Jia
- Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
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9
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Galmarini CM, Martin M, Bouchet BP, Guillen-Navarro MJ, Martínez-Diez M, Martinez-Leal JF, Akhmanova A, Aviles P. Plocabulin, a novel tubulin-binding agent, inhibits angiogenesis by modulation of microtubule dynamics in endothelial cells. BMC Cancer 2018; 18:164. [PMID: 29415678 PMCID: PMC5803861 DOI: 10.1186/s12885-018-4086-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/31/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Vascular supply of tumors is one of the main targets for cancer therapy. Here, we investigated if plocabulin (PM060184), a novel marine-derived microtubule-binding agent, presents antiangiogenic and vascular-disrupting activities. METHODS The effects of plocabulin on microtubule network and dynamics were studied on HUVEC endothelial cells. We have also studied its effects on capillary tube structures formation or destabilization in three-dimensional collagen matrices. In vivo experiments were performed on different tumor cell lines. RESULTS In vitro studies show that, at picomolar concentrations, plocabulin inhibits microtubule dynamics in endothelial cells. This subsequently disturbs the microtubule network inducing changes in endothelial cell morphology and causing the collapse of angiogenic vessels, or the suppression of the angiogenic process by inhibiting the migration and invasion abilities of endothelial cells. This rapid collapse of the endothelial tubular network in vitro occurs in a concentration-dependent manner and is observed at concentrations lower than that affecting cell survival. The in vitro findings were confirmed in tumor xenografts where plocabulin treatment induced a large reduction in vascular volume and induction of extensive necrosis in tumors, consistent with antivascular effects. CONCLUSIONS Altogether, these data suggest that an antivascular mechanism is contributing to the antitumor activities of plocabulin.
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Affiliation(s)
- Carlos M Galmarini
- R&D Area, PharmaMar S.A, Avda. de los Reyes 1, 28770 Colmenar Viejo, Madrid, Spain.
| | - Maud Martin
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Benjamin Pierre Bouchet
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | | | - Marta Martínez-Diez
- R&D Area, PharmaMar S.A, Avda. de los Reyes 1, 28770 Colmenar Viejo, Madrid, Spain
| | | | - Anna Akhmanova
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Pablo Aviles
- R&D Area, PharmaMar S.A, Avda. de los Reyes 1, 28770 Colmenar Viejo, Madrid, Spain
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10
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Liu Y, Li F, Gao F, Xing L, Qin P, Liang X, Zhang J, Qiao X, Lin L, Zhao Q, Du L. Periostin promotes tumor angiogenesis in pancreatic cancer via Erk/VEGF signaling. Oncotarget 2018; 7:40148-40159. [PMID: 27223086 PMCID: PMC5129999 DOI: 10.18632/oncotarget.9512] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/26/2016] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer (PaC) consists of a bulk of stroma cells which contribute to tumor progression by releasing angiogenic factors. Recent studies have found that periostin (POSTN) is closely associate with the metastatic potential and prognosis of PaC. The purpose of this study is to determine the role of POSTN in tumor angiogenesis and explore the precise mechanisms. In this study, we used lentiviral shRNA and human recombinant POSTN protein (rPOSTN) to negatively and positively regulate POSTN expression in vitro. We found that increased POSTN expression promoted the tubule formation dependent on human umbilical vein endothelial cells (HUVECs). Moreover, knockdown of POSTN in PaC cells reduced tumor growth and VEGF expression in vivo. In accordance with these observations, we found that Erk phosphorylation and its downstream VEGF expression were upregulated achieved in rPOSTN-treated groups, opposing results were obversed in POSTN-slienced group. Meanwhile, Erk inhibitor SCH772984 significantly decreased VEGF expression as well as tubule formation of HUVECs in rPOSTN-treated PaC cells. Taken together, these findings suggest that POSTN promotes tumor angiogenesis via Erk/VEGF signaling in PaC and POSTN may be a new target for cancer anti-vascular treatment.
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Affiliation(s)
- Yang Liu
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Fan Li
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Feng Gao
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Lingxi Xing
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Peng Qin
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xingxin Liang
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Jiajie Zhang
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Xiaohui Qiao
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Lizhou Lin
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
| | - Qian Zhao
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis and National Ministry of Education, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Lianfang Du
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China
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11
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Deshmukh SK, Srivastava SK, Zubair H, Bhardwaj A, Tyagi N, Al-Ghadhban A, Singh AP, Dyess DL, Carter JE, Singh S. Resistin potentiates chemoresistance and stemness of breast cancer cells: Implications for racially disparate therapeutic outcomes. Cancer Lett 2017; 396:21-29. [PMID: 28302531 PMCID: PMC5437742 DOI: 10.1016/j.canlet.2017.03.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/04/2017] [Accepted: 03/07/2017] [Indexed: 12/27/2022]
Abstract
Breast cancer (BC) continues to be the most frequently diagnosed cancer in American women, which disproportionately affects women of African-American (AA) descent. Previously, we reported greater serum levels of resistin in AA BC patients relative to Caucasian-American (CA) patients, and established its role in growth and aggressiveness of breast tumor cells. Here we have investigated the role of resistin in BC-chemoresistance. MDA-MB-231 and MDA-MB-468 BC cells of CA and AA origin, respectively, were incubated with resistin prior to doxorubicin treatment. Our data suggest that resistin conferred chemoresistance to both BC cell lines; however, the effect on AA cells was more profound. Furthermore, the resistin-induced doxorubicin-resistance was shown to occur due to suppression of apoptosis. Resistin treatment also affected the stemness of BC cells, as suggested by reduced cell surface expression of CD24, induced expression of CD44 and ALDH1, and increased capability of cells to form mammospheres. Mechanistic studies revealed that resistin-induced chemoresistance, apoptosis and stemness of BC cells were mediated through STAT3 activation. Taken together, our findings provide novel insight into the role of resistin in BC biology, and strengthen its role in racially disparate clinical outcomes.
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Affiliation(s)
- Sachin K Deshmukh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Sanjeev K Srivastava
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Haseeb Zubair
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Arun Bhardwaj
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Nikhil Tyagi
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Ahmed Al-Ghadhban
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Ajay P Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, USA
| | - Donna L Dyess
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - James E Carter
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, USA
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, USA.
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12
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Song JW, Tan YX, Li SB, Zhang SK, Wan LM, Ji SP, Zhou H, Zhou ZH, Gong F. Gemcitabine-induced heparanase promotes aggressiveness of pancreatic cancer cells via activating EGFR signaling. Oncotarget 2017; 8:58417-58429. [PMID: 28938567 PMCID: PMC5601663 DOI: 10.18632/oncotarget.16911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/16/2017] [Indexed: 01/05/2023] Open
Abstract
Pancreatic cancer (PC), characterized by aggressive local invasion and metastasis, is one of the most malignant cancers. Gemcitabine is currently used as the standard drug for the treatment of advanced and metastatic PC, but with limited efficacy. In this study, we demonstrated that gemcitabine increased the expression of heparanase (HPA1), the only known mammalian endoglycosidase capable of cleaving heparan sulfate, both in vitro and in vivo. Furthermore, overexpression of HPA1 in PC cell lines enhanced proliferation and invasion, accompanied with elevated phosphorylation of EGFR. In addition, we showed that the NF-κB pathway mediated the gemcitabine-induced HPA1 expression. Importantly, we found that an HPA1 inhibitor attenuated gemcitabine-induced invasion of PC cells. Finally, we showed that HPA1 was of negative prognostic value for PC patients. Taken together, our results demonstrated that gemcitabine-induced HPA1 promotes proliferation and invasion of PC cells through activating EGFR, implying that HPA1 may serve as promising therapeutic target in the treatment of PC.
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Affiliation(s)
- Jin-Wen Song
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Ying-Xia Tan
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Su-Bo Li
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Shi-Kun Zhang
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Lu-Ming Wan
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Shou-Ping Ji
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Hong Zhou
- Department of Blood Products and Substitutes, Beijing Institute of Transfusion Medicine, Beijing, China
| | - Zhi-Hang Zhou
- Department of Pathology, The 309th Hospital of People's Liberation Army, Beijing, China
| | - Feng Gong
- Department of Tissue Engineering, Beijing Institute of Transfusion Medicine, Beijing, China
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13
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Khan MAA, Azim S, Zubair H, Bhardwaj A, Patel GK, Khushman M, Singh S, Singh AP. Molecular Drivers of Pancreatic Cancer Pathogenesis: Looking Inward to Move Forward. Int J Mol Sci 2017; 18:ijms18040779. [PMID: 28383487 PMCID: PMC5412363 DOI: 10.3390/ijms18040779] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 03/28/2017] [Accepted: 03/30/2017] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer (PC) continues to rank among the most lethal cancers. The consistent increase in incidence and mortality has made it the seventh leading cause of cancer-associated deaths globally and the third in the United States. The biggest challenge in combating PC is our insufficient understanding of the molecular mechanism(s) underlying its complex biology. Studies during the last several years have helped identify several putative factors and events, both genetic and epigenetic, as well as some deregulated signaling pathways, with implications in PC onset and progression. In this review article, we make an effort to summarize our current understanding of molecular and cellular events involved in the pathogenesis of pancreatic malignancy. Specifically, we provide up-to-date information on the genetic and epigenetic changes that occur during the initiation and progression of PC and their functional involvement in the pathogenic processes. We also discuss the impact of the tumor microenvironment on the molecular landscape of PC and its role in aggressive disease progression. It is envisioned that a better understanding of these molecular factors and the mechanisms of their actions can help unravel novel diagnostic and prognostic biomarkers and can also be exploited for future targeted therapies.
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Affiliation(s)
- Mohammad Aslam Aslam Khan
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Shafquat Azim
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Haseeb Zubair
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Arun Bhardwaj
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Girijesh Kumar Patel
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Moh'd Khushman
- Departments of Interdisciplinary Clinical Oncology, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
- Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL 36604, USA.
| | - Ajay Pratap Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.
- Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL 36604, USA.
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14
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Patel GK, Khan MA, Bhardwaj A, Srivastava SK, Zubair H, Patton MC, Singh S, Khushman M, Singh AP. Exosomes confer chemoresistance to pancreatic cancer cells by promoting ROS detoxification and miR-155-mediated suppression of key gemcitabine-metabolising enzyme, DCK. Br J Cancer 2017; 116:609-619. [PMID: 28152544 PMCID: PMC5344296 DOI: 10.1038/bjc.2017.18] [Citation(s) in RCA: 189] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/23/2016] [Accepted: 01/04/2017] [Indexed: 12/12/2022] Open
Abstract
Background: Chemoresistance is a significant clinical problem in pancreatic cancer (PC) and underlying molecular mechanisms still remain to be completely understood. Here we report a novel exosome-mediated mechanism of drug-induced acquired chemoresistance in PC cells. Methods: Differential ultracentrifugation was performed to isolate extracellular vesicles (EVs) based on their size from vehicle- or gemcitabine-treated PC cells. Extracellular vesicles size and subtypes were determined by dynamic light scattering and marker profiling, respectively. Gene expression was examined by qRT-PCR and/or immunoblot analyses, and direct targeting of DCK by miR-155 was confirmed by dual-luciferase 3′-UTR reporter assay. Flow cytometry was performed to examine the apoptosis indices and reactive oxygen species (ROS) levels in PC cells using specific dyes. Cell viability was determined using the WST-1 assay. Results: Conditioned media (CM) from gemcitabine-treated PC cells (Gem-CM) provided significant chemoprotection to subsequent gemcitabine toxicity and most of the chemoresistance conferred by Gem-CM resulted from its EVs fraction. Sub-fractionation grouped EVs into distinct subtypes based on size distribution and marker profiles, and exosome (Gem-Exo) was the only sub-fraction that imparted chemoresistance. Gene expression analyses demonstrated upregulation of SOD2 and CAT (ROS-detoxifying genes), and downregulation of DCK (gemcitabine-metabolising gene) in Gem-Exo-treated cells. SOD/CAT upregulation resulted, at least in part, from exosome-mediated transfer of their transcripts and they suppressed basal and gemcitabine-induced ROS production, and partly promoted chemoresistance. DCK downregulation occurred through exosome-delivered miR-155 and either the functional suppression of miR-155 or restoration of DCK led to marked abrogation of Gem-Exo-mediated chemoresistance. Conclusions: Together, these findings establish a novel role of exosomes in mediating the acquired chemoresistance of PC.
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Affiliation(s)
- Girijesh Kumar Patel
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Mohammad Aslam Khan
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Arun Bhardwaj
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Sanjeev K Srivastava
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Haseeb Zubair
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Mary C Patton
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, USA
| | - Moh'd Khushman
- Department of Interdisciplinary Clinical Oncology, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA
| | - Ajay P Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, USA
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15
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Zubair H, Azim S, Srivastava SK, Ahmad A, Bhardwaj A, Khan MA, Patel GK, Arora S, Carter JE, Singh S, Singh AP. Glucose Metabolism Reprogrammed by Overexpression of IKKε Promotes Pancreatic Tumor Growth. Cancer Res 2016; 76:7254-7264. [PMID: 27923829 DOI: 10.1158/0008-5472.can-16-1666] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/19/2016] [Accepted: 10/04/2016] [Indexed: 02/06/2023]
Abstract
Aberrant expression of the kinase IKKε in pancreatic ductal adenocarcinoma (PDAC) has been associated with poor prognosis. In this study, we define a pathobiologic function for IKKε in reprogramming glucose metabolism and driving progression in PDAC. Silencing IKKε in PDAC cells, which overexpressed it endogenously, was sufficient to reduce malignant cell growth, clonogenic potential, glucose consumption, lactate secretion, and expression of genes involved in glucose metabolism, without impacting the basal oxygen consumption rate. IKKε silencing also attenuated c-Myc in a manner associated with diminished signaling through an AKT/GSK3β/c-MYC phosphorylation cascade that promoted MYC nuclear accumulation. In an orthotopic mouse model, IKKε-silenced PDAC exhibited a relative reduction in glucose uptake, tumorigenicity, and metastasis. Overall, our findings offer a preclinical mechanistic rationale to target IKKε to improve the therapeutic management of PDAC in patients. Cancer Res; 76(24); 7254-64. ©2016 AACR.
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Affiliation(s)
- Haseeb Zubair
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Shafquat Azim
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Sanjeev Kumar Srivastava
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Aamir Ahmad
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Arun Bhardwaj
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Mohammad Aslam Khan
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Girijesh Kumar Patel
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - Sumit Arora
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama
| | - James Elliot Carter
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama
| | - Ajay Pratap Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama. .,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama
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16
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Srivastava SK, Bhardwaj A, Arora S, Singh S, Azim S, Tyagi N, Carter JE, Wang B, Singh AP. MYB is a novel regulator of pancreatic tumour growth and metastasis. Br J Cancer 2015; 113:1694-703. [PMID: 26657649 PMCID: PMC4701995 DOI: 10.1038/bjc.2015.400] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/22/2015] [Accepted: 10/21/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND MYB encodes for a transcription factor regulating the expression of a wide array of genes involved in cellular functions. It is reported to be amplified in a sub-set of pancreatic cancer (PC) cases; however, its pathobiological association has remained unclear thus far. METHODS Expression of MYB and other cellular proteins was analysed by immunoblot or qRT-PCR analyses. MYB was stably overexpressed in non-expressing (BxPC3) and silenced in highly expressing (MiaPaCa and Panc1) PC cells. Effect on growth was analysed by automated cell counting at 24-h interval. Cell-cycle progression and apoptotic indices of PC cells with altered MYB expression were measured through flow cytometry upon staining with respective biomarkers. Cell motility/invasion was examined in a Boyden's chamber assay using non-coated or Matrigel-coated membranes. Effect on tumorigenicity and metastatic potential was examined by non-invasive imaging and through end-point measurements of luciferase-tagged MYB-altered PC implanted in the pancreas of nude mice. RESULTS MYB was aberrantly expressed in all malignant cases of pancreas, whereas remained undetectable in normal pancreas. All the tested established PC cell lines except BxPC3 also exhibited MYB expression. Forced expression of MYB in BxPC3 cells promoted their growth, cell-cycle progression, survival and malignant behaviour, whereas its silencing in MiaPaCa and Panc1 cells produced converse effects. More importantly, ectopic MYB expression was sufficient to confer tumorigenic and metastatic capabilities to non-tumorigenic BxPC3 cells, while its silencing resulted in significant loss of the same in MYB-overexpressing cells as demonstrated in orthotopic mouse model. We also identified several MYB-regulated genes in PC cells that might potentially mediate its effect on tumour growth and metastasis. CONCLUSIONS MYB is aberrantly overexpressed in PC cells and acts as a key determinant of pancreatic tumour growth and metastasis.
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Affiliation(s)
- Sanjeev K Srivastava
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Arun Bhardwaj
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Sumit Arora
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Seema Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Shafquat Azim
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - Nikhil Tyagi
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA
| | - James E Carter
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, Alabama, USA
| | - Bin Wang
- Department of Mathematics and Statistics, University of South Alabama, Mobile, Alabama, USA
| | - Ajay P Singh
- Department of Oncologic Sciences, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama, USA.,Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, Alabama, USA
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