1
|
Miskin RP, DiPersio CM. Roles for epithelial integrin α3β1 in regulation of the microenvironment during normal and pathological tissue remodeling. Am J Physiol Cell Physiol 2024; 326:C1308-C1319. [PMID: 38497112 DOI: 10.1152/ajpcell.00128.2024] [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: 02/23/2024] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 03/19/2024]
Abstract
Integrin receptors for the extracellular matrix activate intracellular signaling pathways that are critical for tissue development, homeostasis, and regeneration/repair, and their loss or dysregulation contributes to many developmental defects and tissue pathologies. This review will focus on tissue remodeling roles for integrin α3β1, a receptor for laminins found in the basement membranes (BMs) that underlie epithelial cell layers. As a paradigm, we will discuss literature that supports a role for α3β1 in promoting ability of epidermal keratinocytes to modify their tissue microenvironment during skin development, wound healing, or tumorigenesis. Preclinical and clinical studies have shown that this role depends largely on ability of α3β1 to govern the keratinocyte's repertoire of secreted proteins, or the "secretome," including 1) matrix proteins and proteases involved in matrix remodeling and 2) paracrine-acting growth factors/cytokines that stimulate other cells with important tissue remodeling functions (e.g., endothelial cells, fibroblasts, inflammatory cells). Moreover, α3β1 signaling controls gene expression that helps epithelial cells carry out these functions, including genes that encode secreted matrix proteins, proteases, growth factors, or cytokines. We will review what is known about α3β1-dependent gene regulation through both transcription and posttranscriptional mRNA stability. Regarding the latter, we will discuss examples of α3β1-dependent alternative splicing (AS) or alternative polyadenylation (APA) that prevents inclusion of cis-acting mRNA sequences that would otherwise target the transcript for degradation via nonsense-mediated decay or destabilizing AU-rich elements (AREs) in the 3'-untranslated region (3'-UTR). Finally, we will discuss prospects and anticipated challenges of exploiting α3β1 as a clinical target for the treatment of cancer or wound healing.
Collapse
Affiliation(s)
| | - C Michael DiPersio
- Department of Surgery, Albany Medical College, Albany, New York, United States
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, United States
| |
Collapse
|
2
|
Longmate WM, Norton E, Duarte GA, Wu L, DiPersio MR, Lamar JM, DiPersio CM. Keratinocyte integrin α3β1 induces expression of the macrophage stimulating factor, CSF-1, through a YAP/TEAD-dependent mechanism. Matrix Biol 2024; 127:48-56. [PMID: 38340968 PMCID: PMC10923166 DOI: 10.1016/j.matbio.2024.02.003] [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: 07/05/2023] [Revised: 01/11/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
The development of wound therapy targeting integrins is hampered by inadequate understanding of integrin function in cutaneous wound healing and the wound microenvironment. Following cutaneous injury, keratinocytes migrate to restore the skin barrier, and macrophages aid in debris clearance. Thus, both keratinocytes and macrophages are critical to the coordination of tissue repair. Keratinocyte integrins have been shown to participate in this coordinated effort by regulating secreted factors, some of which crosstalk to distinct cells in the wound microenvironment. Epidermal integrin α3β1 is a receptor for laminin-332 in the cutaneous basement membrane. Here we show that wounds deficient in epidermal α3β1 express less epidermal-derived macrophage colony-stimulating factor 1 (CSF-1), the primary macrophage-stimulating growth factor. α3β1-deficient wounds also have fewer wound-proximal macrophages, suggesting that keratinocyte α3β1 may stimulate wound macrophages through the regulation of CSF-1. Indeed, using a set of immortalized keratinocytes, we demonstrate that keratinocyte-derived CSF-1 supports macrophage growth, and that α3β1 regulates Csf1 expression through Src-dependent stimulation of Yes-associated protein (YAP)-Transcriptional enhanced associate domain (TEAD)-mediated transcription. Consistently, α3β1-deficient wounds in vivo display a substantially reduced number of keratinocytes with YAP-positive nuclei. Overall, our current findings identify a novel role for epidermal integrin α3β1 in regulating the cutaneous wound microenvironment by mediating paracrine crosstalk from keratinocytes to wound macrophages, implicating α3β1 as a potential target of wound therapy.
Collapse
Affiliation(s)
- Whitney M Longmate
- Department of Surgery, Albany Medical College, Albany, NY 12208, USA; Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Emily Norton
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Giesse Albeche Duarte
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Lei Wu
- Department of Surgery, Albany Medical College, Albany, NY 12208, USA
| | - Mathieu R DiPersio
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - John M Lamar
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - C Michael DiPersio
- Department of Surgery, Albany Medical College, Albany, NY 12208, USA; Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA.
| |
Collapse
|
3
|
Varney SD, Wu L, Longmate WM, DiPersio CM, Van De Water L. Loss of integrin α9β1 on tumor keratinocytes enhances the stromal vasculature and growth of cutaneous tumors. J Invest Dermatol 2021; 142:1966-1975.e8. [PMID: 34843681 DOI: 10.1016/j.jid.2021.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 11/02/2021] [Accepted: 11/12/2021] [Indexed: 10/19/2022]
Abstract
Angiogenesis is critical to tumor progression and the function of integrins in tumor angiogenesis is complex. Here we report that loss of integrin α9β1 expression from epidermal tumor cells is critical to maintain persistent stromal vessel density. Forced expression of α9 in transformed mouse keratinocytes dramatically reduces vessel density in allograft tumors, in vivo, compared to the same cells lacking α9β1. Moreover, α9 mRNA expression is dramatically reduced in mouse and human epidermal tumors as is α9β1-dependent gene regulation. Loss of tumor cell α9β1 occurs through at least two mechanisms: (1) ITGA9 gene copy number loss in human tumors, and (2) epigenetic silencing in mouse and human tumors. Importantly, we show that reversal of epigenetic silencing of Itga9 restores α9 expression in mouse keratinocytes, and that human tumors without ITGA9 copy number loss have increased promoter methylation. Our data suggest that for epidermal tumorigenesis to occur, tumor cells must avoid the tumor and angiogenic suppressive effects of α9β1 by repressing its expression through deletion and/or epigenetic silencing, thereby promoting stromal development and tumor growth.
Collapse
Affiliation(s)
| | | | | | | | - Livingston Van De Water
- Department of Surgery; Department of Regenerative & Cancer Cell Biology, Albany Medical College, Albany, NY 12208, USA
| |
Collapse
|
4
|
Longmate WM, Miskin RP, Van De Water L, DiPersio CM. Epidermal Integrin α3β1 Regulates Tumor-Derived Proteases BMP-1, Matrix Metalloprotease-9, and Matrix Metalloprotease-3. JID INNOVATIONS : SKIN SCIENCE FROM MOLECULES TO POPULATION HEALTH 2021; 1:100017. [PMID: 34909716 PMCID: PMC8659409 DOI: 10.1016/j.xjidi.2021.100017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/05/2021] [Accepted: 04/14/2021] [Indexed: 10/28/2022]
Abstract
As the major cell surface receptors for the extracellular matrix, integrins regulate adhesion and migration and have been shown to drive tumor growth and progression. Previous studies showed that mice lacking integrin α3β1 in the epidermis fail to form skin tumors during two-step chemical tumorigenesis, indicating a protumorigenic role for α3β1. Furthermore, genetic ablation of α3β1 in established skin tumors caused their rapid regression, indicating an essential role in the maintenance of tumor growth. In this study, analysis of immortalized keratinocyte lines and their conditioned media support a role for α3β1 in regulating the expression of several extracellular proteases of the keratinocyte secretome, namely BMP-1, matrix metalloprotease (MMP)-9, and MMP-3. Moreover, immunofluorescence revealed reduced levels of each protease in α3β1-deficient tumors, and RNA in situ hybridization showed that their expression was correspondingly reduced in α3β1-deficient tumor cells in vivo. Bioinformatic analysis confirmed that the expression of BMP1, MMP9, and MMP3 genes correlate with the expression of ITGA3 (gene encoding the integrin α3 subunit) in human squamous cell carcinoma and that high ITGA3 and MMP3 associate with poor survival outcome in these patients. Overall, our findings identify α3β1 as a regulator of several proteases within the secretome of epidermal tumors and as a potential therapeutic target.
Collapse
Key Words
- CM, conditioned medium
- ECM, extracellular matrix
- IMK, immortalized mouse keratinocyte
- ISH, in situ hybridization
- KC, keratinocyte
- MK, mouse keratinocyte
- MMP, matrix metalloprotease
- SCC, squamous cell carcinoma
- TME, tumor microenvironment
- TMK, transformed mouse keratinocyte
Collapse
Affiliation(s)
| | - Rakshitha Pandulal Miskin
- The Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, New York, USA
| | - Livingston Van De Water
- Department of Surgery, Albany Medical College, Albany, New York, USA,The Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, New York, USA
| | - C. Michael DiPersio
- Department of Surgery, Albany Medical College, Albany, New York, USA,Department of Molecular and Cellular Physiology (MCP), Albany Medical College, Albany, New York, USA,Correspondence: C. Michael DiPersio, Department of Surgery, Albany Medical College, Mail Code 8, Room MR-421, 47 New Scotland Avenue, Albany, New York 12208-3479, USA.
| |
Collapse
|
5
|
Baster Z, Li L, Rajfur Z, Huang C. Talin2 mediates secretion and trafficking of matrix metallopeptidase 9 during invadopodium formation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118693. [DOI: 10.1016/j.bbamcr.2020.118693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/21/2020] [Accepted: 03/03/2020] [Indexed: 12/18/2022]
|
6
|
Longmate WM, Varney S, Power D, Miskin RP, Anderson KE, DeFreest L, Van De Water L, DiPersio CM. Integrin α3β1 on Tumor Keratinocytes Is Essential to Maintain Tumor Growth and Promotes a Tumor-Supportive Keratinocyte Secretome. J Invest Dermatol 2020; 141:142-151.e6. [PMID: 32454065 DOI: 10.1016/j.jid.2020.05.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/08/2020] [Accepted: 05/01/2020] [Indexed: 02/01/2023]
Abstract
The development of integrin-targeted cancer therapies is hindered by incomplete understanding of integrin function in tumor cells and the tumor microenvironment. Previous studies showed that mice with epidermis-specific deletion of the α3 integrin subunit fail to form skin tumors during two-step chemical tumorigenesis, indicating a protumorigenic role for integrin α3β1. Here, we generated mice with tamoxifen-inducible, epidermis-specific α3 knockout to determine the role of α3β1 in the maintenance of established tumor cells and/or the associated stroma. Genetic ablation of α3 in established skin tumors caused their rapid regression, indicating that α3β1 is essential to maintain tumor growth. Although reduced proliferation and increased apoptosis were observed in α3β1-deficient tumor cells, these changes followed a robust increase in stromal apoptosis. Furthermore, macrophages and fibulin-2 levels were reduced in stroma following α3 deletion from tumor cells. Mass spectrometric analysis of conditioned medium from immortalized keratinocytes showed that α3β1 regulates a substantial fraction of the keratinocyte secretome, including fibulin-2 and macrophage CSF1; RNA in situ hybridization showed that expression of these two genes was reduced in tumor keratinocytes in vivo. Our findings identify α3β1 as a regulator of the keratinocyte secretome and skin tumor microenvironment and as a potential therapeutic target.
Collapse
Affiliation(s)
| | - Scott Varney
- Department of Surgery Albany Medical College, Albany, New York, USA
| | - Derek Power
- Department of Surgery Albany Medical College, Albany, New York, USA
| | | | - Karl E Anderson
- Department of Surgery Albany Medical College, Albany, New York, USA
| | - Lori DeFreest
- Department of Surgery Albany Medical College, Albany, New York, USA
| | - Livingston Van De Water
- Department of Surgery Albany Medical College, Albany, New York, USA; Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, New York, USA
| | - C Michael DiPersio
- Department of Surgery Albany Medical College, Albany, New York, USA; Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, New York, USA.
| |
Collapse
|
7
|
Shang S, Ji X, Zhang L, Chen J, Li C, Shi R, Xiang W, Kang X, Zhang D, Yang F, Dai R, Chen P, Chen S, Chen Y, Li Y, Miao H. Macrophage ABHD5 Suppresses NFκB-Dependent Matrix Metalloproteinase Expression and Cancer Metastasis. Cancer Res 2019; 79:5513-5526. [PMID: 31439546 DOI: 10.1158/0008-5472.can-19-1059] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 07/09/2019] [Accepted: 08/16/2019] [Indexed: 11/16/2022]
Abstract
Metabolic reprogramming in tumor-associated macrophages (TAM) is associated with cancer development, however, the role of macrophage triglyceride metabolism in cancer metastasis is unclear. Here, we showed that TAMs exhibited heterogeneous expression of abhydrolase domain containing 5 (ABHD5), an activator of triglyceride hydrolysis, with migratory TAMs expressing lower levels of ABHD5 compared with the nonmigratory TAMs. ABHD5 expression in macrophages inhibited cancer cell migration in vitro in xenograft models and in genetic cancer models. The effects of macrophage ABHD5 on cancer cell migration were dissociated from its metabolic function as neither triglycerides nor ABHD5-regulated metabolites from macrophages affected cancer cell migration. Instead, ABHD5 deficiency in migrating macrophages promoted NFκB p65-dependent production of matrix metalloproteinases (MMP). ABHD5 expression negatively correlated with MMP expression in TAMs and was associated with better survival in patients with colorectal cancer. Taken together, our findings show that macrophage ABHD5 suppresses NFκB-dependent MMP production and cancer metastasis and may serve as a prognostic marker in colorectal cancer. SIGNIFICANCE: These findings highlight the mechanism by which reduced expression of the metabolic enzyme ABHD5 in macrophages promotes cancer metastasis.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/79/21/5513/F1.large.jpg.
Collapse
Affiliation(s)
- Shenglan Shang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China.,Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xinran Ji
- Department of Orthopaedic Surgery, Chinese People's Liberation Army General Hospital (301 Hospital), Wukesong, Beijing, China
| | - Lili Zhang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China.,Department of Military Psychology, School of Psychology, Third Military Medical University, Chongqing, China
| | - Jun Chen
- Department of General Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chuan Li
- Department of General Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Rongchen Shi
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China
| | - Wei Xiang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China
| | - Xia Kang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China
| | - Dapeng Zhang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China.,Department of Biochemistry and Molecular Biology, Southwest Medical University, Luzhou, China
| | - Fan Yang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China
| | - Rongyang Dai
- Department of Biochemistry and Molecular Biology, Southwest Medical University, Luzhou, China
| | - Peng Chen
- Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Shan Chen
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China
| | - Yongchuan Chen
- Department of Pharmacy, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yongsheng Li
- Clinical Medicine Research Center & Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
| | - Hongming Miao
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, China. .,Department of Biochemistry and Molecular Biology, Southwest Medical University, Luzhou, China
| |
Collapse
|
8
|
Establishment of a Murine Pro-acinar Cell Line to Characterize Roles for FGF2 and α3β1 Integrins in Regulating Pro-acinar Characteristics. Sci Rep 2019; 9:10984. [PMID: 31358811 PMCID: PMC6662831 DOI: 10.1038/s41598-019-47387-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 07/12/2019] [Indexed: 12/12/2022] Open
Abstract
Radiation therapy for head and neck cancers results in permanent damage to the saliva producing acinar compartment of the salivary gland. To date, a pure pro-acinar cell line to study underlying mechanisms of acinar cell differentiation in culture has not been described. Here, we report the establishment of a pro-acinar (mSG-PAC1) and ductal (mSG-DUC1) cell line, from the murine submandibular salivary gland (SMG), which recapitulate developmental milestones in differentiation. mSG-DUC1 cells express the ductal markers, keratin-7 and keratin-19, and form lumenized spheroids. mSG-PAC1 cells express the pro-acinar markers SOX10 and aquaporin-5. Using the mSG-PAC1 cell line, we demonstrate that FGF2 regulates specific steps during acinar cell maturation. FGF2 up-regulates aquaporin-5 and the expression of the α3 and α6 subunits of the α3β1 and α6β1 integrins that are known to promote SMG morphogenesis and differentiation. mSG-DUC1 and mSG-PAC1 cells were derived from genetically modified mice, homozygous for floxed alleles of the integrin α3 subunit. Similar to SMGs from α3-null mice, deletion of α3 alleles in mSG-PAC1 cells results in the up-regulation of E-cadherin and the down-regulation of CDC42. Our data indicate that mSG-DUC1 and mSG-PAC1 cells will serve as important tools to gain mechanistic insight into salivary gland morphogenesis and differentiation.
Collapse
|
9
|
DiPersio CM, Van De Water L. Integrin Regulation of CAF Differentiation and Function. Cancers (Basel) 2019; 11:cancers11050715. [PMID: 31137641 PMCID: PMC6563118 DOI: 10.3390/cancers11050715] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/14/2019] [Accepted: 05/21/2019] [Indexed: 02/07/2023] Open
Abstract
Extensive remodeling of the extracellular matrix, together with paracrine communication between tumor cells and stromal cells, contribute to an “activated” tumor microenvironment that supports malignant growth and progression. These stromal cells include inflammatory cells, endothelial cells, and cancer-associated fibroblasts (CAFs). Integrins are expressed on all tumor and stromal cell types where they regulate both cell adhesion and bidirectional signal transduction across the cell membrane. In this capacity, integrins control pro-tumorigenic cell autonomous functions such as growth and survival, as well as paracrine crosstalk between tumor cells and stromal cells. The myofibroblast-like properties of cancer-associated fibroblasts (CAFs), such as robust contractility and extracellular matrix (ECM) deposition, allow them to generate both chemical and mechanical signals that support invasive tumor growth. In this review, we discuss the roles of integrins in regulating the ability of CAFs to generate and respond to extracellular cues in the tumor microenvironment. Since functions of specific integrins in CAFs are only beginning to emerge, we take advantage of a more extensive literature on how integrins regulate wound myofibroblast differentiation and function, as some of these integrin functions are likely to extrapolate to CAFs within the tumor microenvironment. In addition, we discuss the roles that integrins play in controlling paracrine signals that emanate from epithelial/tumor cells to stimulate fibroblasts/CAFs.
Collapse
|
10
|
Gao C, Xing X, He Z, Chen S, Wang S, Li Q, Guo P, Zhang H, Li H, Chen L, Wang Q, Zhao J, Xiao Y, Chen W, Li D. Hypermethylation of PGCP gene is associated with human bronchial epithelial cells immortalization. Gene 2017; 642:505-512. [PMID: 29196255 DOI: 10.1016/j.gene.2017.11.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 10/30/2017] [Accepted: 11/27/2017] [Indexed: 02/07/2023]
Abstract
Cell immortalization is the initial step for cancer development. To identify the differentially expressed genes regulated by DNA methylation over the course of human primary bronchial epithelial cell (HPBECs) immortalization, an immortalized HBE cell line (HBETT) was generated via introduction of an SV40 LT and a catalytic subunit of human telomerase reverse transcriptase (hTERT) into the HPBECs. Microarrays of mRNA and DNA methylation were performed to compare the transcriptomes and DNA methylomes between these two types of cells. The results from the mRNA microarray revealed many genes whose expression changed upon cell immortalization. We identified signatures including global hypomethylation, perturbation of ECM-receptor interaction, focal adhesion, and PI3K-Akt pathways associated with cell immortalization. Moreover, we revealed 155 differentiated methylation regions (DMRs) within the CpG islands (CGIs) of 42 genes and the perturbation of several key pathways that might be involved in HBE cell immortalization. Among these genes, the hypermethylation of the plasma glutamate carboxypeptidase (PGCP) gene appeared specifically in lung cancer tissues. The inhibition of PGCP expression by promoter hypermethylation was observed in both immortal HBETT cells and benzo[a]pyrene (Bap)-transformed HBE cells. In conclusion, these findings provide new insight into the epigenetic modifications that are critical in the transition and maintenance of cell immortalization.
Collapse
Affiliation(s)
- Chen Gao
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiumei Xing
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zhini He
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shen Chen
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shan Wang
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Qingye Li
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Ping Guo
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Haiyan Zhang
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Huiyao Li
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Liping Chen
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Qing Wang
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Jian Zhao
- Department of Chest Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Yongmei Xiao
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Wen Chen
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
| | - Daochuan Li
- Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
11
|
Wang XL, Liu K, Liu JH, Jiang XL, Qi LW, Xie YF, Li JF, Yang L, Chen YZ, Liu CX, Li SG, Cui XB, Zou H, Pang LJ, Zhao J, Qi Y, Cao YW, Liang WH, Jiang JF, Shen XH, Yuan XL, Hu JM, Li F. High infiltration of CD68-tumor associated macrophages, predict poor prognosis in Kazakh esophageal cancer patients. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:10282-10292. [PMID: 31966363 PMCID: PMC6965792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 09/13/2017] [Indexed: 06/10/2023]
Abstract
Tumor-associated macrophages (TAMs), the most important immune cells in tumor microenvironment, were reported to play a key role in cancer progression, but the correlation of TAMs and Kazakh esophageal squamous cell carcinoma (ESCC) was still not clear, so we sought to identify the function of TAMs in Kazakh ESCC clinicopathological and prognostic evaluation. CD68 as the TAMs marker, and immunohistochemistry (IHC) was used to quantify the TAMs infiltrated in tumor nest and stroma, the IHC staining was also used to evaluate the expression of MMP-9 in Kazakh ESCCs. The density of CD68-TAMs in ESCCs tumor nest and stromal, were significantly higher than those of CANs (P<0.05). The increasing number of CD68-positive TAMs in tumor nest and stromal were positively associated with tumors lymph node metastasis and clinical stage (P<0.05). The expression of MMP-9 in Kazakh ESCCs was higher than that of CAN tissues (P<0.05). Increased MMP-9 expression in ESCCs was significantly associated with lymph node metastasis and tumor clinical stage (P<0.05). Importantly, the number of CD68-positive TAMs in ESCCs was significantly correlated with the expression of MMP-9 (P<0.05). Furthermore, the survival analyses demonstrated that high-density of CD68-TAMs in tumor nest was positively related to the shorter overall survival time of patients (P<0.05). Increasing numbers of CD68-TAMs promote higher expression of MMP-9 and may play an important role in the occurrence and progression of Kazakh ESCCs, and which could be used as important prognostic markers for Kazakh ESCCs.
Collapse
Affiliation(s)
- Xue Li Wang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Kai Liu
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Ji Hong Liu
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Xian Li Jiang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Li Wen Qi
- Department of Clinical Medicine, North Sichuan Medical CollegeNanchong 637100, Sichuan, China
| | - Yu Fang Xie
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Jiang Fen Li
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Lan Yang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Yun Zhao Chen
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Chun Xia Liu
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Shu Gang Li
- Preventive Medicine, School of Medicine, Shihezi UniversityShihezi, China
| | - Xiao Bin Cui
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Hong Zou
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Li Juan Pang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Jin Zhao
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Yan Qi
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Yu Wen Cao
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Wei Hua Liang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Jin Fang Jiang
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Xi Hua Shen
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Xiang Lin Yuan
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan, China
| | - Jian Ming Hu
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
| | - Feng Li
- Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of MedicineShihezi, China
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical UniversityBeijing, China
| |
Collapse
|
12
|
Ahmedah HT, Patterson LH, Shnyder SD, Sheldrake HM. RGD-Binding Integrins in Head and Neck Cancers. Cancers (Basel) 2017; 9:cancers9060056. [PMID: 28587135 PMCID: PMC5483875 DOI: 10.3390/cancers9060056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 05/22/2017] [Accepted: 05/23/2017] [Indexed: 12/13/2022] Open
Abstract
Alterations in integrin expression and function promote tumour growth, invasion, metastasis and neoangiogenesis. Head and neck cancers are highly vascular tumours with a tendency to metastasise. They express a wide range of integrin receptors. Expression of the αv and β1 subunits has been explored relatively extensively and linked to tumour progression and metastasis. Individual receptors αvβ3 and αvβ5 have proved popular targets for diagnostic and therapeutic agents but lesser studied receptors, such as αvβ6, αvβ8, and β1 subfamily members, also show promise. This review presents the current knowledge of integrin expression and function in squamous cell carcinoma of the head and neck (HNSCC), with a particular focus on the arginine-glycine-aspartate (RGD)-binding integrins, in order to highlight the potential of integrins as targets for personalised tumour-specific identification and therapy.
Collapse
Affiliation(s)
- Hanadi Talal Ahmedah
- Radiological Sciences Department, College of Health and Rehabilitation Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi Arabia.
| | | | - Steven D Shnyder
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK.
| | - Helen M Sheldrake
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK.
| |
Collapse
|
13
|
Longmate WM, Lyons SP, Chittur SV, Pumiglia KM, Van De Water L, DiPersio CM. Suppression of integrin α3β1 by α9β1 in the epidermis controls the paracrine resolution of wound angiogenesis. J Cell Biol 2017; 216:1473-1488. [PMID: 28416479 PMCID: PMC5412555 DOI: 10.1083/jcb.201510042] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 02/10/2017] [Accepted: 03/14/2017] [Indexed: 12/02/2022] Open
Abstract
The development of novel therapies to promote wound healing is hindered by our poor understanding of how different integrins function together in the epidermis. Longmate et al. show that cross-suppression by integrins within the epidermis controls paracrine signals that regulate wound angiogenesis. Integrin α9β1 suppresses the proangiogenic functions of α3β1 during late-stage wound healing, leading to the normalization of blood vessel density in the wound bed. Development of wound therapies is hindered by poor understanding of combinatorial integrin function in the epidermis. In this study, we generated mice with epidermis-specific deletion of α3β1, α9β1, or both integrins as well as keratinocyte lines expressing these integrin combinations. Consistent with proangiogenic roles for α3β1, α3-null keratinocytes showed reduced paracrine stimulation of endothelial cell migration and survival, and wounds of epidermis-specific α3 knockout mice displayed impaired angiogenesis. Interestingly, α9β1 in keratinocytes suppressed α3β1-mediated stimulation of endothelial cells, and wounds of epidermis-specific α9 knockout mice displayed delayed vascular normalization and reduced endothelial apoptosis, indicating that α9β1 cross-suppresses α3β1 proangiogenic functions. Moreover, α9β1 inhibited α3β1 signaling downstream of focal adhesion kinase (FAK) autoactivation at the point of Src-mediated phosphorylation of FAK Y861/Y925. Finally, α9β1 cross-suppressed many α3β1-dependent genes, including the gene that encodes MMP-9, which we implicated as a regulator of integrin-dependent cross talk to endothelial cells. Our findings identify a novel physiological context for combinatorial integrin signaling, laying the foundation for therapeutic strategies that manipulate α9β1 and/or α3β1 during wound healing.
Collapse
Affiliation(s)
- Whitney M Longmate
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY 12208
| | - Scott P Lyons
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY 12208
| | - Sridar V Chittur
- Center for Functional Genomics, University at Albany, Rensselaer, NY 12144
| | - Kevin M Pumiglia
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY 12208
| | - Livingston Van De Water
- Department of Surgery, Albany Medical College, Albany, NY 12208.,Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY 12208
| | - C Michael DiPersio
- Department of Surgery, Albany Medical College, Albany, NY 12208 .,Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY 12208
| |
Collapse
|
14
|
The opposing roles of laminin-binding integrins in cancer. Matrix Biol 2017; 57-58:213-243. [DOI: 10.1016/j.matbio.2016.08.007] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/02/2016] [Accepted: 08/17/2016] [Indexed: 02/06/2023]
|
15
|
Zhang H, Hao C, Wang Y, Ji S, Zhang X, Zhang W, Zhao Q, Sun J, Hao J. Sohlh2 inhibits human ovarian cancer cell invasion and metastasis by transcriptional inactivation of MMP9. Mol Carcinog 2015; 55:1127-37. [PMID: 26153894 DOI: 10.1002/mc.22355] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 05/19/2015] [Accepted: 05/28/2015] [Indexed: 11/05/2022]
Abstract
Identifying key mediators of cancer invasion and metastasis is crucial to the development of new and more effective therapies. We previously identified Sohlh2 as an important inhibitor of ovarian cancer cell proliferation. However, the function of Sohlh2 in cell migration and invasion remains unknown. In this paper, we report a novel Sohlh2 to MMP9 signaling pathway in the invasive ovarian cancer. Using immunohistochemistry staining, we revealed Sohlh2 expression was inversely correlated with the invasive human ovarian cancers. In vitro experiments, forced expression of Sohlh2 led to a significant reduction in cancer cell migration and invasion. Conversely, silencing of Sohlh2 enhanced ovarian cancer cell migration and invasion. Experiments using nude mice demonstrated that the ectopic Sohlh2 expression inhibited the HO8910 cell capability of the metastasis to the lungs and livers. Ectopic overexpression of Sohlh2 in the invasive HO8910 cells reduced the MMP9 expression, whereas Sohlh2 knockdown from the non-invasive, SKOV3 cells increased the MMP9 expression. Promoter activation and binding analyses indicated that Sohlh2 repressed the MMP9 expression by directly acting on the MMP9 gene promoter. Inhibition of MMP9 dramatically blocked the Sohlh2 knockdown-enhanced SKOV3 cell invasion, and ectopic expression of MMP9 compensated for the anti-invasive activity of Sohlh2 in HO8910 cells. Overall, these results demonstrate for the first time that Sohlh2 functions as a tumor metastasis suppressor. Modulation of Sohlh2 expression has the potential to be a target for cancer therapy. © 2015 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Haiyu Zhang
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| | - Chunyan Hao
- Department of Pathology, School of Medicine, Shandong University, Jinan, PR China
| | - Yang Wang
- Department of Galactophore Surgery, Weifang People's Hospital, Weifang, PR China
| | - Shufang Ji
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| | - Xiaoli Zhang
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| | - Wenfang Zhang
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| | - Qinghao Zhao
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| | - Jinhao Sun
- Department of Human Anatomy, School of Medicine, Shandong University, Jinan, PR China
| | - Jing Hao
- Department of Histology and Embryology, School of Medicine, Key Laboratory of the Ministry of Education for Experimental Teratology, Shandong University, Jinan, PR China
| |
Collapse
|
16
|
Liu Z, Dou C, Jia Y, Li Q, Zheng X, Yao Y, Liu Q, Song T. RIG-I suppresses the migration and invasion of hepatocellular carcinoma cells by regulating MMP9. Int J Oncol 2015; 46:1710-20. [PMID: 25626059 DOI: 10.3892/ijo.2015.2853] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 12/22/2014] [Indexed: 12/17/2022] Open
Abstract
The retinoic acid-induced protein I (Rig-I/Ddx58), (RIG-I) initiates a signaling cascade that induces innate immune defences which is associated with the production of type I interferons (IFNs) and inflammatory cytokines to establish an antiviral state. Aberrant RIG-I signaling leads to inflammation, autoimmune diseases and cancer. However, the role of RIG-I in hepatocellular carcinoma (HCC) is still unknown. Here, we observed that RIG-I expression was downregulated in HCC tissues and loss of RIG-I expression was correlated with poor clinicopathological features. Additionally, we demonstrated that patients with positive RIG-I expression had a better 3-year survival and RIG-I was an independent factor for predicting the prognosis of HCC patients. Elevated RIG-I expression inhibited the proliferation, migration, and invasion of HCC. Inhibiting RIG-I with its specific siRNA was able to attenuate the malignant behavior of HCC cells. Moreover, RIG-I inhibited the invasive behavior through downregulating matrix metalloproteinase-9 (MMP9). Mechanistically, RIG-I enhances IFN-α response by amplifying IFN-α effecter signaling via strengthening STAT1 activation. Addressing this pathway, we identified that RIG-I may serve as a prognostic marker and that MMP9 may be a potential target of RIG-I in HCC.
Collapse
Affiliation(s)
- Zhikui Liu
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Changwei Dou
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yuli Jia
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Qing Li
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xin Zheng
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yingmin Yao
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Qingguang Liu
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Tao Song
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| |
Collapse
|
17
|
Missan DS, Mitchell K, Subbaram S, DiPersio CM. Integrin α3β1 signaling through MEK/ERK determines alternative polyadenylation of the MMP-9 mRNA transcript in immortalized mouse keratinocytes. PLoS One 2015; 10:e0119539. [PMID: 25751421 PMCID: PMC4353714 DOI: 10.1371/journal.pone.0119539] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 01/13/2015] [Indexed: 12/15/2022] Open
Abstract
Integrin α3β1 is highly expressed in both normal and tumorigenic epidermal keratinocytes where it regulates genes that control cellular function and extracellular matrix remodeling during normal and pathological tissue remodeling processes, including wound healing and development of squamous cell carcinoma (SCC). Previous studies identified a role for α3β1 in immortalized and transformed keratinocytes in the regulation of genes that promote tumorigenesis, invasion, and pro-angiogenic crosstalk to endothelial cells. One such gene, matrix metalloproteinase-9 (MMP-9), is induced by α3β1 through a post-transcriptional mechanism of enhanced mRNA stability. In the current study, we sought to investigate the mechanism through which α3β1 controls MMP-9 mRNA stability. First, we utilized a luciferase reporter assay to show that AU-rich elements (AREs) residing within the 3’-untranslated region (3’-UTR) of the MMP-9 mRNA renders the transcript unstable in a manner that is independent of α3β1. Next, we cloned a truncated variant of the MMP-9 mRNA which is generated through usage of an alternative, upstream polyadenylation signal and lacks the 3’-UTR region containing the destabilizing AREs. Using an RNase protection assay to distinguish “long” (full-length 3’-UTR) and “short” (truncated 3’-UTR) MMP-9 mRNA variants, we demonstrated that the shorter, more stable mRNA that lacks 3’-UTR AREs was preferentially generated in α3β1-expressing keratinocytes compared with α3β1-deficient (i.e., α3-null) keratinocytes. Moreover, we determined that α3β1-dependent alternative polyadenylation was acquired by immortalized keratinocytes, as primary neonatal keratinocytes did not display α3β1-dependent differences in the long and short transcripts. Finally, pharmacological inhibition of the extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MAPK) pathway in α3β1-expressing keratinocytes caused a shift towards long variant expression, while Raf-1-mediated activation of ERK in α3-null keratinocytes dramatically enhanced short variant expression, indicating a role for ERK/MAPK signaling in α3β1-mediated selection of the proximal polyadenylation site. These findings identify a novel mode of integrin α3β1-mediated gene regulation through alternative polyadenylation.
Collapse
Affiliation(s)
- Dara S. Missan
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, United States of America
| | - Kara Mitchell
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, United States of America
| | - Sita Subbaram
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, United States of America
| | - C. Michael DiPersio
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, United States of America
- * E-mail:
| |
Collapse
|
18
|
Translationally controlled tumor protein induces epithelial to mesenchymal transition and promotes cell migration, invasion and metastasis. Sci Rep 2015; 5:8061. [PMID: 25622969 PMCID: PMC4306963 DOI: 10.1038/srep08061] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 12/29/2014] [Indexed: 12/21/2022] Open
Abstract
Translationally controlled tumor protein (TCTP), is a highly conserved protein involved in fundamental processes, such as cell proliferation and growth, tumorigenesis, apoptosis, pluripotency, and cell cycle regulation. TCTP also inhibits Na,K-ATPase whose subunits have been suggested as a marker of epithelial-to-mesenchymal transition (EMT), a crucial step during tumor invasiveness, metastasis and fibrosis. We hypothesized that, TCTP might also serve as an EMT inducer. This study attempts to verify this hypothesis. We found that overexpression of TCTP in a porcine renal proximal tubule cell line, LLC-PK1, induced EMT-like phenotypes with the expected morphological changes and appearance of EMT related markers. Conversely, depletion of TCTP reversed the induction of these EMT phenotypes. TCTP overexpression also enhanced cell migration via activation of mTORC2/Akt/GSK3β/β-catenin, and invasiveness by activating MMP-9. Moreover, TCTP depletion in melanoma cells significantly reduced pulmonary metastasis by inhibiting the development of mesenchymal-like phenotypes. Overall, these findings support our hypothesis that TCTP is a positive regulator of EMT and suggest that modulation of TCTP expression is a potential approach to inhibit the invasiveness and migration of cancer cells and the attendant pathologic processes including metastasis.
Collapse
|
19
|
Missan DS, Chittur SV, DiPersio CM. Regulation of fibulin-2 gene expression by integrin α3β1 contributes to the invasive phenotype of transformed keratinocytes. J Invest Dermatol 2014; 134:2418-2427. [PMID: 24694902 PMCID: PMC4134363 DOI: 10.1038/jid.2014.166] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/18/2014] [Accepted: 02/28/2014] [Indexed: 11/09/2022]
Abstract
The laminin-binding integrin α3β1 is highly expressed in epidermal keratinocytes, where it regulates both cell-autonomous and paracrine functions that promote wound healing and skin tumorigenesis. However, the roles for α3β1 in regulating gene expression programs that control the behaviors of immortalized or transformed keratinocytes remain underexplored. In the current study, we used a microarray approach to identify genes that are regulated by α3β1 in immortalized keratinocytes. α3β1-Responsive genes included several genes that are involved in extracellular matrix proteolysis or remodeling, including fibulin-2 and secreted protein acidic and rich in cysteine. However, α3β1-dependent induction of specific target genes was influenced by the genetic lesion that triggered immortalization, as α3β1-dependent fibulin-2 expression occurred in cells immortalized by either SV40 large T antigen or p53-null mutation, whereas α3β1-dependent expression of secreted protein acidic and rich in cysteine occurred only in the former cells. Interestingly, quantitative PCR arrays did not reveal strong patterns of α3β1-dependent gene expression in freshly isolated primary keratinocytes, suggesting that this regulation is acquired during immortalization. p53-null keratinocytes transformed with oncogenic RasV12 retained α3β1-dependent fibulin-2 expression, and RNAi-mediated knockdown of fibulin-2 in these cells reduced invasion, although not their tumorigenic potential. These findings demonstrate a prominent role for α3β1 in immortalized/transformed keratinocytes in regulating fibulin-2 and other genes that promote matrix remodeling and invasion.
Collapse
Affiliation(s)
- Dara S Missan
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, USA
| | - Sridar V Chittur
- Center for Functional Genomics, University at Albany, Rensselaer, New York, USA
| | - C Michael DiPersio
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York, USA.
| |
Collapse
|
20
|
Subbaram S, Lyons SP, Svenson KB, Hammond SL, McCabe LG, Chittur SV, DiPersio CM. Integrin α3β1 controls mRNA splicing that determines Cox-2 mRNA stability in breast cancer cells. J Cell Sci 2014; 127:1179-89. [PMID: 24434582 DOI: 10.1242/jcs.131227] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
It is unknown how cues from the tumor microenvironment can regulate post-transcriptional mechanisms, such as alternative splicing, that control genes that drive malignant growth. The induction of cyclooxygenase 2 (Cox-2) by integrin α3β1 in breast cancer cells can promote tumor progression. We have used RNAi to suppress α3β1 in human MDA-MB-231 breast cancer cells and then investigated changes in global gene expression. Numerous mRNAs, including Cox-2, show altered expression and/or alternative exon usage (AEU) in α3β1-deficient cells. AEU included patterns predicted to render an mRNA susceptible to degradation, such as 3'-UTR variations or retention of elements that target an mRNA for nonsense-mediated decay (NMD). PCR-based analysis of α3β1-deficient cells confirmed changes in Cox-2 mRNA that might target it for NMD, including retention of an intron that harbors premature termination codons and changes within the 3'-UTR. Moreover, Cox-2 mRNA has reduced stability in α3β1-deficient cells, which is partially reversed by knockdown of the essential NMD factor UPF1. Our study identifies α3β1-mediated AEU as a novel paradigm of integrin-dependent gene regulation that has potential for exploitation as a therapeutic target.
Collapse
Affiliation(s)
- Sita Subbaram
- Center for Cell Biology and Cancer Research, Albany Medical College, MC-165, 47 New Scotland Avenue, Albany, NY 12208, USA
| | | | | | | | | | | | | |
Collapse
|
21
|
Yang W, He M, Zhao J, Wang Z. Association of ITGA3 gene polymorphisms with susceptibility and clinicopathological characteristics of osteosarcoma. Med Oncol 2014; 31:826. [PMID: 24381140 DOI: 10.1007/s12032-013-0826-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 12/20/2013] [Indexed: 12/23/2022]
Abstract
Integrin controls cell adhesion to extracellular matrix and plays an important role in regulating the proliferation and apoptosis of cells. In order to explore the role of ITGA3 gene polymorphisms in the pathogenesis and clinicopathological characteristics of osteosarcoma, we embarked on a study including a group of 118 patients and a group of 126 healthy controls. TaqMan PCR genotyping technology was used to detect the genotypes of ITGA3 gene SNPs (rs2230392, rs2285524 and rs16948627) in the peripheral blood. Then, associations of the SNP (rs2230392, rs2285524 and rs16948627) genotypes with the incidence risk and tumor characteristics of osteosarcoma were evaluated. A significant difference (P = 0.02) in the genotype frequency distribution of rs2230392 was observed between case and control groups. The analysis showed that patients carrying AA genotype had a higher risk of osteosarcoma (OR 2.34, 95 % CI 1.18-4.64) than those with GG genotype. Regarding rs2230392, men carrying AA genotype had a higher risk of osteosarcoma (OR 3.37, 95 % CI 1.25-9.11). Compared with those with GG genotype, patients carrying AA genotype had a twofold increased risk of osteosarcoma metastasis (OR 2.46, 95 % CI 1.09-5.57). Survival analysis showed that for rs2230392, survival time of osteosarcoma patients with three different genotypes was significantly different. Polymorphisms of ITGA3 gene rs2230392 may affect the incidence, metastasis and survival of osteosarcoma, which may clinically become a new target for predicting the risk of osteosarcoma, and have prognostic value.
Collapse
Affiliation(s)
- Wu Yang
- Division of Spinal Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, China
| | | | | | | |
Collapse
|
22
|
Gustafson-Wagner E, Stipp CS. The CD9/CD81 tetraspanin complex and tetraspanin CD151 regulate α3β1 integrin-dependent tumor cell behaviors by overlapping but distinct mechanisms. PLoS One 2013; 8:e61834. [PMID: 23613949 PMCID: PMC3629153 DOI: 10.1371/journal.pone.0061834] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 03/15/2013] [Indexed: 01/16/2023] Open
Abstract
Integrin α3β1 potently promotes cell motility on its ligands, laminin-332 and laminin-511, and this may help to explain why α3β1 has repeatedly been linked to breast carcinoma progression and metastasis. The pro-migratory functions of α3β1 depend strongly on lateral interactions with cell surface tetraspanin proteins. Tetraspanin CD151 interacts directly with the α3 integrin subunit and links α3β1 integrin to other tetraspanins, including CD9 and CD81. Loss of CD151 disrupts α3β1 association with other tetraspanins and impairs α3β1-dependent motility. However, the extent to which tetraspanins other than CD151 are required for specific α3β1 functions is unclear. To begin to clarify which aspects of α3β1 function require which tetraspanins, we created breast carcinoma cells depleted of both CD9 and CD81 by RNA interference. Silencing both of these closely related tetraspanins was required to uncover their contributions to α3β1 function. We then directly compared our CD9/CD81-silenced cells to CD151-silenced cells. Both CD9/CD81-silenced cells and CD151-silenced cells showed delayed α3β1-dependent cell spreading on laminin-332. Surprisingly, however, once fully spread, CD9/CD81-silenced cells, but not CD151-silenced cells, displayed impaired α3β1-dependent directed motility and altered front-rear cell morphology. Also unexpectedly, the CD9/CD81 complex, but not CD151, was required to promote α3β1 association with PKCα in breast carcinoma cells, and a PKC inhibitor mimicked aspects of the CD9/CD81-silenced cell motility defect. Our data reveal overlapping, but surprisingly distinct contributions of specific tetraspanins to α3β1 integrin function. Importantly, some of CD9/CD81's α3β1 regulatory functions may not require CD9/CD81 to be physically linked to α3β1 by CD151.
Collapse
Affiliation(s)
| | - Christopher S. Stipp
- Department of Biology, University of Iowa, Iowa City, Iowa, United States of America
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa, United States of America
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa, United States of America
| |
Collapse
|
23
|
Gao J, Ding F, Liu Q, Yao Y. Knockdown of MACC1 expression suppressed hepatocellular carcinoma cell migration and invasion and inhibited expression of MMP2 and MMP9. Mol Cell Biochem 2012; 376:21-32. [PMID: 23232575 DOI: 10.1007/s11010-012-1545-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 12/06/2012] [Indexed: 01/01/2023]
Abstract
Expression of MACC1 (metastasis-associated in colon cancer-1) protein is associated with metastasis of various human cancers. This study analyzed MACC1 protein expression in hepatocellular carcinoma (HCC) tissue specimens and then investigated the effects of MACC1 knockdown on HCC cell migration and invasion, and gene expression levels. Sixty pairs of HCC and adjacent normal liver tissues from HCC patients were analyzed for MACC1 expression immunohistochemically. The HCC cell lines Hep3B, Huh7, MHCC97H, SMMC-7721, Bel-7402, and HepG2 and the normal liver cell line LO2 were used to assess expressions of MACC1 mRNA and MACC1 protein using qRT-PCR and western blot, respectively. MACC1 short hairpin RNA (shRNA) was used to knockdown MACC1 protein expression in Huh7 cells. Changes in the tumor phenotype of these cells were analyzed with wound healing assay and invasion assays, and differences in gene expression were evaluated via western blot. Immunofluorescence was used to locate MACC1 protein in the above cell lines. MACC1 was highly expressed in HCC tissues and the nuclear expression of MACC1 protein was associated with poor tumor differentiation and intrahepatic metastasis or portal invasion. Moreover, MACC1 mRNA and MACC1 protein was also expressed in HCC cell lines. Immunostaining showed that MACC1 protein was localized in both nuclei and cytoplasm of HCC cell lines and the nuclear localization of MACC1 protein was associated with increased aggressiveness of HCC in cell lines. Knockdown of MACC1 expression using MACC1-shRNA reduced Huh7 cell migration and invasion abilities, which was associated with downregulation of MMP2, MMP9, and c-Met proteins in Huh7 cells. Localization of MACC1 protein to the nucleus may predict HCC progression. Knockdown of MACC1 expression using MACC1 shRNA warrants further evaluation as a novel therapeutic strategy for control of HCC.
Collapse
Affiliation(s)
- Jie Gao
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | | | | | | |
Collapse
|
24
|
Loss of integrin α3 prevents skin tumor formation by promoting epidermal turnover and depletion of slow-cycling cells. Proc Natl Acad Sci U S A 2012; 109:21468-73. [PMID: 23236172 DOI: 10.1073/pnas.1204614110] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Progression through the various stages of skin tumorigenesis is correlated with an altered expression of the integrin α3β1, suggesting that it plays an important role in the tumorigenic process. Using epidermis-specific Itga3 KO mice subjected to the 7,12-dimethylbenzanthracene (DMBA)/12-O-tetradecanoylphorbol-13-acetate two-stage skin carcinogenesis protocol, we demonstrate that efficient tumor development is critically dependent on the presence of α3β1. In the absence of α3β1, tumor initiation is dramatically decreased because of increased epidermal turnover, leading to a loss of DMBA-initiated label-retaining keratinocytes. Lineage tracing revealed emigration of α3-deficient keratinocytes residing in the bulge of the hair follicle toward the interfollicular epidermis. Furthermore, tumor growth and cell proliferation were strongly reduced in mice with an epidermis-specific deletion of Itga3. However, the rate of progression of α3β1-null squamous cell carcinomas to undifferentiated, invasive carcinomas was increased. Therefore, α3β1 critically affects skin carcinogenesis with opposing effects early and late in tumorigenesis.
Collapse
|
25
|
Martin S, Janouskova H, Dontenwill M. Integrins and p53 pathways in glioblastoma resistance to temozolomide. Front Oncol 2012; 2:157. [PMID: 23120745 PMCID: PMC3484330 DOI: 10.3389/fonc.2012.00157] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 10/16/2012] [Indexed: 01/08/2023] Open
Abstract
Glioblastoma is the most common malignant primary brain tumor. Surgical resection, postoperative radiotherapy plus concomitant and adjuvant chemotherapy with temozolomide (TMZ) is the standard of care for newly diagnosed glioblastoma. In the past decade, efforts have been made to decipher genomic and core pathway alterations to identify clinically relevant glioblastoma subtypes. Based on these studies and more academic explorations, new potential therapeutic targets were found and several targeting agents were developed. Such molecules should hopefully overcome the resistance of glioblastoma to the current therapy. One of the hallmarks of glioblastoma subtypes was the enrichment of extracellular matrix/invasion-related genes. Integrins, which are cell adhesion molecules important in glioma cell migration/invasion and angiogenesis were one of those genes. Integrins seem to be pertinent therapeutic targets and antagonists recently reached the clinic. Although the p53 pathway appears often altered in glioblastoma, conflicting results can be found in the literature about the clinically relevant impact of the p53 status in the resistance to TMZ. Here, we will summarize the current knowledge on (1) integrin expression, (2) p53 status, and (3) relationship between integrins and p53 to discuss their potential impact on the resistance of glioblastoma to temozolomide.
Collapse
Affiliation(s)
- Sophie Martin
- Laboratory of Biophotonics and Pharmacology, UMR 7213 CNRS, Faculté de Pharmacie, Université de Strasbourg Illkirch, France
| | | | | |
Collapse
|
26
|
Kligys KR, Wu Y, Hopkinson SB, Kaur S, Platanias LC, Jones JCR. α6β4 integrin, a master regulator of expression of integrins in human keratinocytes. J Biol Chem 2012; 287:17975-84. [PMID: 22493440 DOI: 10.1074/jbc.m111.310458] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Three major laminin and collagen-binding integrins in skin (α6β4, α3β1, and α2β1) are involved in keratinocyte adhesion to the dermis and dissemination of skin cells during wound healing and/or tumorigenesis. Knockdown of α6 integrin in keratinocytes not only results in motility defects but also leads to decreased surface expression of the α2, α3, and β4 integrin subunits. Whereas α2 integrin mRNA levels are decreased in α6 integrin knockdown cells, α3 and β4 integrin mRNAs levels are unaffected. Expression of either α6 or α3 integrin in α6 integrin knockdown cells restores α2 integrin mRNA levels. Moreover, re-expression of α6 integrin increases β4 integrin protein at the cell surface, which results in an increase in α3 integrin expression via activation of initiation factor 4E-binding protein 1. Our data indicate that the α6β4 integrin is a master regulator of transcription and translation of other integrin subunits and underscore its pivotal role in wound healing and cancer.
Collapse
Affiliation(s)
- Kristina R Kligys
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | | | | | | | | | | |
Collapse
|
27
|
Katagiri F, Ishikawa M, Yamada Y, Hozumi K, Kikkawa Y, Nomizu M. Screening of integrin-binding peptides from the laminin α4 and α5 chain G domain peptide library. Arch Biochem Biophys 2012; 521:32-42. [PMID: 22391228 DOI: 10.1016/j.abb.2012.02.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 02/22/2012] [Accepted: 02/23/2012] [Indexed: 02/09/2023]
Abstract
Laminins, a multifunctional protein family of extracellular matrix, interact with various types of integrin. Here, integrin-mediated cell adhesive peptides have been systematically screened in the laminin α4 and α5 chain G domain peptide library consisting of 211 peptides by both the peptide-coated plastic plates and peptide-conjugated Sepharose bead assays using human dermal fibroblasts. Thirteen peptides promoted cell spreading and the activity was specifically inhibited by EDTA. Cell attachment to 11 peptides was inhibited by anti-integrin β1 antibody. Additionally, cell attachment to the A5G81 (AGQWHRVSVRWG) and A5G84 (TWSQKALHHRVP) peptides was specifically inhibited by anti-integrin α3 and α6 antibodies. These results suggest that the A5G81 and A5G84 peptides promote integrin α3β1- and α6β1-mediated cell attachment. Further, most of the integrin-mediated cell adhesive peptides are located in the loop regions in the G domains, suggesting that structure is important for the integrin specific recognition. Integrin binding peptides are useful for understanding laminin functions and have a potential to use for biomaterials and drug development.
Collapse
Affiliation(s)
- Fumihiko Katagiri
- Laboratory of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | | | | | | | | | | |
Collapse
|
28
|
Abstract
INTRODUCTION Integrin receptors for cell adhesion to the extracellular matrix have important roles in all stages of cancer progression and metastasis. Since the integrin family was discovered in the early 1980's, many studies have identified critical adhesion and signaling functions for integrins expressed on tumor cells, endothelial cells and other cell types of the tumor microenvironment, in controlling proliferation, survival, migration and angiogenesis. In recent years, the laminin-binding integrin α3β1 has emerged as a potentially promising anti-cancer target on breast cancer cells. AREAS COVERED Studies from the past decade that implicate integrins as promising anti-cancer targets and the development of integrin antagonists as anti-cancer therapeutics. Recent preclinical studies that have identified the laminin-binding integrin α3β1 as an appealing anti-cancer target and the knowledge gaps that must be closed to fully exploit this integrin as a therapeutic target for breast cancer. EXPERT OPINION Although the tumor-promoting functions of α3β1 implicate this integrin as a promising therapeutic target on breast cancer cells, successful exploitation of this integrin as an anti-cancer target will require a better understanding of the molecular mechanisms whereby it regulates specific tumor cell behaviors and the identification of the most appropriate α3β1 functions to antagonize on breast cancer cells.
Collapse
Affiliation(s)
- Sita Subbaram
- Albany Medical College, Center for Cell Biology & Cancer Research, Albany, NY 12208, USA
| | | |
Collapse
|
29
|
Eberle KE, Sansing HA, Szaniszlo P, Resto VA, Berrier AL. Carcinoma matrix controls resistance to cisplatin through talin regulation of NF-kB. PLoS One 2011; 6:e21496. [PMID: 21720550 PMCID: PMC3123362 DOI: 10.1371/journal.pone.0021496] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 05/30/2011] [Indexed: 12/31/2022] Open
Abstract
Extracellular matrix factors within the tumor microenvironment that control resistance to chemotherapeutics are poorly understood. This study focused on understanding matrix adhesion pathways that control the oral carcinoma response to cisplatin. Our studies revealed that adhesion of HN12 and JHU012 oral carcinomas to carcinoma matrix supported tumor cell proliferation in response to treatment with cisplatin. Proliferation in response to 30 µM cisplatin was not observed in HN12 cells adherent to other purified extracellular matrices such as Matrigel, collagen I, fibronectin or laminin I. Integrin β1 was important for adhesion to carcinoma matrix to trigger proliferation after treatment with cisplatin. Disruption of talin expression in HN12 cells adherent to carcinoma matrix increased cisplatin induced proliferation. Pharmacological inhibitors were used to determine signaling events required for talin deficiency to regulate cisplatin induced proliferation. Pharmacological inhibition of NF-kB reduced proliferation of talin-deficient HN12 cells treated with 30 µM cisplatin. Nuclear NF-kB activity was assayed in HN12 cells using a luciferase reporter of NF-kB transcriptional activity. Nuclear NF-kB activity was similar in HN12 cells adherent to carcinoma matrix and collagen I when treated with vehicle DMSO. Following treatment with 30 µM cisplatin, NF-kB activity is maintained in cells adherent to carcinoma matrix whereas NF-kB activity is reduced in collagen I adherent cells. Expression of talin was sufficient to trigger proliferation of HN12 cells adherent to collagen I following treatment with 1 and 30 µM cisplatin. Talin overexpression was sufficient to trigger NF-kB activity following treatment with cisplatin in carcinoma matrix adherent HN12 cells in a process disrupted by FAK siRNA. Thus, adhesions within the carcinoma matrix create a matrix environment in which exposure to cisplatin induces proliferation through the function of integrin β1, talin and FAK pathways that regulate NF-kB nuclear activity.
Collapse
Affiliation(s)
- Karen E. Eberle
- Department of Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center-New Orleans, New Orleans, Louisiana, United States of America
| | - Hope A. Sansing
- Department of Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center-New Orleans, New Orleans, Louisiana, United States of America
| | - Peter Szaniszlo
- Department of Otolaryngology, University of Texas Medical Branch Cancer Center, University of Texas Medical Branch Health, Galveston, Texas, United States of America
| | - Vicente A. Resto
- Department of Otolaryngology, University of Texas Medical Branch Cancer Center, University of Texas Medical Branch Health, Galveston, Texas, United States of America
| | - Allison L. Berrier
- Department of Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center-New Orleans, New Orleans, Louisiana, United States of America
- * E-mail:
| |
Collapse
|
30
|
Abstract
One of the primary functions of any epithelium is to act as a barrier. To maintain integrity, epithelia migrate rapidly to cover wounds, and there is intense interest in understanding how wounds are detected. Numerous soluble factors are present in the wound environment and epithelia can sense the presence of adjacent denuded extracellular matrix. However, the presence of such cues is expected to be highly variable, and here we focus on the presence of edges in the epithelial sheets as a stimulus, since they are universally and continuously present in wounds. Using a novel tissue culture model, free edges in the absence of any other identifiable cues were found to trigger activation of the epidermal growth factor receptor and increase cell motility. Edges bordered by inert physical barriers do not activate the receptor, indicating that activation is related to mechanical factors rather than to specific cell cell interactions.
Collapse
Affiliation(s)
- Jes K Klarlund
- Ophthalmology and Visual Sciences Research Center, The Eye and Ear Institute, University of Pittsburgh, Pittsburgh, PA, USA.
| | | |
Collapse
|
31
|
Abstract
Epithelial to mesenchymal transition (EMT) and extracellular matrix degradation are critical for the initiation and progression of tumor invasion. We have recently identified Krüppel-like factor 8 (KLF8) as a critical inducer of EMT and invasion. KLF8 induces EMT primarily by repressing E-cadherin transcription. However, how KLF8 promotes invasion is unknown. Here we report a novel KLF8-to-MMP9 signaling that promotes human breast cancer invasion. To identify the potential KLF8 regulation of MMPs in breast cancer, we established two inducible cell lines that allow either KLF8 overexpression in MCF-10A or knockdown in MDA-MB-231 cells. KLF8 overexpression induced a strong increase in MMP9 expression and activity as determined by quantitative real-time PCR and zymography. This induction was well correlated with the MMP inhibitor-sensitive Matrigel invasion. Conversely, KLF8 knockdown caused the opposite changes that could be partially prevented by MMP9 overexpression. Promoter-reporter assays and chromatin and oligonucleotide precipitations determined that KLF8 directly bound and activated the human MMP9 gene promoter. Three-dimensional (3D) glandular culture showed that KLF8 expression disrupted the normal acinus formation which could be prevented by the MMP inhibitor, whereas KLF8 knockdown corrected the abnormal 3D architecture which could be protected by MMP9 overexpression. KLF8 knockdown promoted MDA-MB-231 cell aggregation in suspension culture which could be prevented by MMP9 overexpression. KLF8 knockdown inhibited the lung metastasis of MDA-MB-231 cells in nude mice. Immunohistochemical staining strongly correlated the co-expression of KLF8 and MMP9 with the patient tumor invasion, metastasis and poor survival. Taken together, this work identified the KLF8 activation of MMP9 as a novel and critical signaling mechanism underlying human breast cancer invasion and metastasis.
Collapse
|
32
|
Mitchell K, Svenson KB, Longmate WM, Gkirtzimanaki K, Sadej R, Wang X, Zhao J, Eliopoulos AG, Berditchevski F, Dipersio CM. Suppression of integrin alpha3beta1 in breast cancer cells reduces cyclooxygenase-2 gene expression and inhibits tumorigenesis, invasion, and cross-talk to endothelial cells. Cancer Res 2010; 70:6359-67. [PMID: 20631072 DOI: 10.1158/0008-5472.can-09-4283] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Integrin receptors for cell adhesion to extracellular matrix have important roles in promoting tumor growth and progression. Integrin alpha3beta1 is highly expressed in breast cancer cells in which it is thought to promote invasion and metastasis; however, its roles in regulating malignant tumor cell behavior remain unclear. In the current study, we used short-hairpin RNA (shRNA) to show that suppression of alpha3beta1 in a human breast cancer cell line, MDA-MB-231, leads to decreased tumorigenicity, reduced invasiveness, and decreased production of factors that stimulate endothelial cell migration. Real-time PCR revealed that suppression of alpha3beta1 caused a dramatic reduction in expression of the cyclooxygenase-2 (COX-2) gene, which is frequently overexpressed in breast cancers and has been exploited as a therapeutic target. Decreased COX-2 was accompanied by reduced prostaglandin E2 (PGE(2)), a major prostanoid produced downstream of COX-2 and an important effector of COX-2 signaling. shRNA-mediated suppression of COX-2 showed that it has a role in tumor cell invasion and cross-talk to endothelial cells. Furthermore, treatment with PGE(2) restored these functions in alpha3beta1-deficient MDA-MB-231 cells. These findings identify a role for alpha3beta1 in regulating two properties of tumor cells that facilitate cancer progression: invasiveness and ability to stimulate endothelial cells. They also reveal a novel role for COX-2 as a downstream effector of alpha3beta1 in tumor cells, thereby identifying alpha3beta1 as a potential therapeutic target to inhibit breast cancer.
Collapse
Affiliation(s)
- Kara Mitchell
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208-3479, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Margadant C, Charafeddine RA, Sonnenberg A. Unique and redundant functions of integrins in the epidermis. FASEB J 2010; 24:4133-52. [DOI: 10.1096/fj.09-151449] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Coert Margadant
- Division of Cell BiologyThe Netherlands Cancer Institute Amsterdam The Netherlands
| | | | - Arnoud Sonnenberg
- Division of Cell BiologyThe Netherlands Cancer Institute Amsterdam The Netherlands
| |
Collapse
|
34
|
Block ER, Tolino MA, Lozano JS, Lathrop KL, Sullenberger RS, Mazie AR, Klarlund JK. Free edges in epithelial cell sheets stimulate epidermal growth factor receptor signaling. Mol Biol Cell 2010; 21:2172-81. [PMID: 20462956 PMCID: PMC2893982 DOI: 10.1091/mbc.e09-12-1026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Epithelia tend to migrate when edges are present, for instance, after wounding or during development. Using a new tissue culture model, we found that the existence of free edges is in itself a signal that causes activation of the epidermal growth factor and cell motility. The ability of epithelia to migrate and cover wounds is essential to maintaining their functions as physical barriers. Wounding induces many cues that may affect the transition to motility, including the immediate mechanical perturbation, release of material from broken cells, new interactions with adjacent extracellular matrix, and breakdown of physical separation of ligands from their receptors. Depending on the exact nature of wounds, some cues may be present only transiently or insignificantly. In many epithelia, activation of the epidermal growth factor receptor (EGFR) is a central event in induction of motility, and we find that its continuous activation is required for progression of healing of wounds in sheets of corneal epithelial cells. Here, we examine the hypothesis that edges, which are universally and continuously present in wounds, are a cue. Using a novel culture model we find that their presence is sufficient to cause activation of the EGFR and increased motility of cells in the absence of other cues. Edges that are bordered by agarose do not induce activation of the EGFR, indicating that activation is not due to loss of any specific type of cell–cell interaction but rather due to loss of physical constraints.
Collapse
Affiliation(s)
- Ethan R Block
- Ophthalmology and Visual Sciences Research Center, Eye and Ear Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | | | | | | | | | | | | |
Collapse
|
35
|
Zuo J, Ishikawa T, Boutros S, Xiao Z, Humtsoe JO, Kramer RH. Bcl-2 Overexpression Induces a Partial Epithelial to Mesenchymal Transition and Promotes Squamous Carcinoma Cell Invasion and Metastasis. Mol Cancer Res 2010; 8:170-82. [PMID: 20145039 DOI: 10.1158/1541-7786.mcr-09-0354] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jianhong Zuo
- Department of Cell and Tissue Biology, University of California San Francisco, 521 Parnassus Avenue, San Francisco, CA 94143-0640, USA
| | | | | | | | | | | |
Collapse
|
36
|
Carracedo S, Lu N, Popova SN, Jonsson R, Eckes B, Gullberg D. The fibroblast integrin alpha11beta1 is induced in a mechanosensitive manner involving activin A and regulates myofibroblast differentiation. J Biol Chem 2010; 285:10434-45. [PMID: 20129924 DOI: 10.1074/jbc.m109.078766] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Fibrotic tissue is characterized by an overabundance of myofibroblasts. Thus, understanding the factors that induce myofibroblast differentiation is paramount to preventing fibrotic healing. Previous studies have shown that mechanical stress derived from the integrin-mediated interaction between extracellular matrix and the cytoskeleton promotes myofibroblast differentiation. Integrin alpha11beta1 is a collagen receptor on fibroblasts. To determine whether alpha11beta1 can act as a mechanosensor to promote the myofibroblast phenotype, mouse embryonic fibroblasts and human corneal fibroblasts were utilized. We found that alpha11 mRNA and protein levels were up-regulated in mouse embryonic fibroblasts grown in attached three-dimensional collagen gels and conversely down-regulated in cells grown in floating gels. alpha11 up-regulation could be prevented by manually detaching the collagen gels or by cytochalasin D treatment. Furthermore, SB-431542, an inhibitor of signaling via ALK4, ALK5, and ALK7, prevented the up-regulation of alpha11 and the concomitant phosphorylation of Smad3 under attached conditions. In attached gels, TGF-beta1 was secreted in its inactive form but surprisingly not further activated, thus not influencing alpha11 regulation. However, inhibition of activin A attenuated the up-regulation of alpha11. To determine the role of alpha11 in myofibroblast differentiation, human corneal fibroblasts were transfected with small interfering RNA to alpha11, which decreased alpha-smooth muscle actin expression and myofibroblast differentiation. Our data suggest that alpha11beta1 is regulated by cell/matrix stress involving activin A and Smad3 and that alpha11beta1 regulates myofibroblast differentiation.
Collapse
Affiliation(s)
- Sergio Carracedo
- Department of Biomedicine, University of Bergen, N-5009 Bergen, Norway
| | | | | | | | | | | |
Collapse
|
37
|
Abstract
Alternative splicing plays an important role in regulation of normal cellular function. Alternative splicing of pre-mRNA leads to the diversity of downstream protein products in the cell. The Affymetrix Exon arrays allow for a high throughput evaluation of the differences in spliced mRNA expressed in a biological system. In this study, we describe a method using this technology to study the generation of alternative mRNA transcripts in breast cancer cells that differ in the levels of a particular integrin, alpha3beta1.
Collapse
|
38
|
Mitchell K, Szekeres C, Milano V, Svenson KB, Nilsen-Hamilton M, Kreidberg JA, DiPersio CM. Alpha3beta1 integrin in epidermis promotes wound angiogenesis and keratinocyte-to-endothelial-cell crosstalk through the induction of MRP3. J Cell Sci 2009; 122:1778-87. [PMID: 19435806 DOI: 10.1242/jcs.040956] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
During cutaneous wound healing, epidermal keratinocytes play essential roles in the secretion of factors that promote angiogenesis. However, specific cues in the wound microenvironment that trigger the production of pro-angiogenic factors by keratinocytes, and the cellular receptors that mediate this response, remain unclear. In this study, we exploited a model of conditional integrin knockout to demonstrate impaired wound angiogenesis in mice that lack alpha3beta1 integrin in epidermis. In addition, we used genetic and shRNA approaches to determine that alpha3beta1-integrin deficiency in keratinocytes leads to reduced mRNA and protein expression of the pro-angiogenic factor mitogen-regulated protein 3 (MRP3; also known as PRL2C4), and to demonstrate that this regulation provides a mechanism of keratinocyte-to-endothelial-cell crosstalk that promotes endothelial-cell migration. Finally, we showed that the impaired wound angiogenesis in epidermis-specific alpha3-integrin-knockout mice is correlated with reduced expression of MRP3 in wounded epidermis. These findings identify a novel role for alpha3beta1 integrin in promoting wound angiogenesis through a mechanism of crosstalk from epidermal to endothelial cells, and they implicate MRP3 in this integrin-dependent crosstalk. Such a mechanism represents a novel paradigm for integrin-mediated regulation of wound angiogenesis that extends beyond traditional roles for integrins in cell adhesion and migration.
Collapse
Affiliation(s)
- Kara Mitchell
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, NY 12208, USA
| | | | | | | | | | | | | |
Collapse
|
39
|
McQuibban GA, Gong JH, Tam EM, McCulloch CA, Clark-Lewis I, Overall CM. Inflammation dampened by gelatinase A cleavage of monocyte chemoattractant protein-3. Crit Rev Biochem Mol Biol 2000; 48:222-72. [PMID: 10947989 DOI: 10.3109/10409238.2013.770819] [Citation(s) in RCA: 545] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tissue degradation by the matrix metalloproteinase gelatinase A is pivotal to inflammation and metastases. Recognizing the catalytic importance of substrate-binding exosites outside the catalytic domain, we screened for extracellular substrates using the gelatinase A hemopexin domain as bait in the yeast two-hybrid system. Monocyte chemoattractant protein-3 (MCP-3) was identified as a physiological substrate of gelatinase A. Cleaved MCP-3 binds to CC-chemokine receptors-1, -2, and -3, but no longer induces calcium fluxes or promotes chemotaxis, and instead acts as a general chemokine antagonist that dampens inflammation. This suggests that matrix metalloproteinases are both effectors and regulators of the inflammatory response.
Collapse
Affiliation(s)
- G A McQuibban
- Department of Biochemistry and Molecular Biology, Biomedical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | | | | | | | | | | |
Collapse
|