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Sun Y, Xu L, Li Y, Lin J, Li H, Gao Y, Huang X, Zhu H, Zhang Y, Wei K, Yang Y, Wu B, Zhang L, Li Q, Liu C. Single-Cell Transcriptomics Uncover Key Regulators of Skin Regeneration in Human Long-Term Mechanical Stretch-Mediated Expansion Therapy. Front Cell Dev Biol 2022; 10:865983. [PMID: 35712657 PMCID: PMC9195629 DOI: 10.3389/fcell.2022.865983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/13/2022] [Indexed: 11/18/2022] Open
Abstract
Tissue expansion is a commonly performed therapy to grow extra skin invivo for reconstruction. While mechanical stretch-induced epidermal changes have been extensively studied in rodents and cell culture, little is known about the mechanobiology of the human epidermis in vivo. Here, we employed single-cell RNA sequencing to interrogate the changes in the human epidermis during long-term tissue expansion therapy in clinical settings. We also verified the main findings at the protein level by immunofluorescence analysis of independent clinical samples. Our data show that the expanding human skin epidermis maintained a cellular composition and lineage trajectory that are similar to its non-expanding neighbor, suggesting the cellular heterogeneity of long-term expanded samples differs from the early response to the expansion. Also, a decrease in proliferative cells due to the decayed regenerative competency was detected. On the other hand, profound transcriptional changes are detected for epidermal stem cells in the expanding skin versus their non-expanding peers. These include significantly enriched signatures of C-FOS, EMT, and mTOR pathways and upregulation of AREG and SERPINB2 genes. CellChat associated ligand-receptor pairs and signaling pathways were revealed. Together, our data present a single-cell atlas of human epidermal changes in long-term tissue expansion therapy, suggesting that transcriptional change in epidermal stem cells is the major mechanism underlying long-term human skin expansion therapy. We also identified novel therapeutic targets to promote human skin expansion efficiency in the future.
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Affiliation(s)
- Yidan Sun
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Luwen Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yin Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jian Lin
- Department of Orthopedics, Shanghai Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haizhou Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yashan Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaolu Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hainan Zhu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingfan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kunchen Wei
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yali Yang
- Department of Dermatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Laser Cosmetology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Baojin Wu
- Department of Plastic Surgery, Shanghai Huashan Hospital, Fudan University School of Medicine, Shanghai, China
| | - Liang Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Caiyue Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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HPV8 Reverses the Transcriptional Output in Lrig1 Positive Cells to Drive Skin Tumorigenesis. Cancers (Basel) 2022; 14:cancers14071662. [PMID: 35406439 PMCID: PMC8997052 DOI: 10.3390/cancers14071662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 11/17/2022] Open
Abstract
K14-HPV8-CER transgenic mice express the complete early genome region of human papillomavirus type 8 (HPV8) and develop skin tumours attributed to the expansion of the Lrig1+ stem cell population. The correlation between HPV8-induced changes in transcriptional output in the stem cell compartment remains poorly understood. To further understand the oncogenic pathways underlying skin tumour formation we examined the gene expression network in skin tumours of K14-HPV8-CER mice and compared the differentially expressed genes (DEG) with those of the Lrig1-EGFP-ires-CreERT2 mice. Here, we report 397 DEGs in skin tumours of K14-HPV8-CER mice, of which 181 genes were up- and 216 were down-regulated. Gene ontology and KEGG pathway enrichment analyses suggest that the 397 DEGs are acting in signalling pathways known to be involved in skin homeostasis. Interestingly, we found that HPV8 early gene expression subverts the expression pattern of 23 cellular genes known to be expressed in Lrig1+ keratinocytes. Furthermore, we identified putative upstream regulating transcription factors as well as miRNAs in the control of these genes. These data provide strong evidence that HPV8 mediated transcriptional changes may contribute to skin tumorigenesis, offering new insights into the mechanism of HPV8 driven oncogenesis.
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3
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Suzuki H, Kaneko MK, Kato Y. Roles of Podoplanin in Malignant Progression of Tumor. Cells 2022; 11:cells11030575. [PMID: 35159384 PMCID: PMC8834262 DOI: 10.3390/cells11030575] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 02/07/2023] Open
Abstract
Podoplanin (PDPN) is a cell-surface mucin-like glycoprotein that plays a critical role in tumor development and normal development of the lung, kidney, and lymphatic vascular systems. PDPN is overexpressed in several tumors and is involved in their malignancy. PDPN induces platelet aggregation through binding to platelet receptor C-type lectin-like receptor 2. Furthermore, PDPN modulates signal transductions that regulate cell proliferation, differentiation, migration, invasion, epithelial-to-mesenchymal transition, and stemness, all of which are crucial for the malignant progression of tumor. In the tumor microenvironment (TME), PDPN expression is upregulated in the tumor stroma, including cancer-associated fibroblasts (CAFs) and immune cells. CAFs play significant roles in the extracellular matrix remodeling and the development of immunosuppressive TME. Additionally, PDPN functions as a co-inhibitory molecule on T cells, indicating its involvement with immune evasion. In this review, we describe the mechanistic basis and diverse roles of PDPN in the malignant progression of tumors and discuss the possibility of the clinical application of PDPN-targeted cancer therapy, including cancer-specific monoclonal antibodies, and chimeric antigen receptor T technologies.
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Affiliation(s)
- Hiroyuki Suzuki
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
- Correspondence: (H.S.); (Y.K.); Tel.: +81-22-717-8207 (H.S. & Y.K.)
| | - Mika K. Kaneko
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan;
| | - Yukinari Kato
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan;
- Correspondence: (H.S.); (Y.K.); Tel.: +81-22-717-8207 (H.S. & Y.K.)
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4
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de Winde CM, George SL, Crosas-Molist E, Hari-Gupta Y, Arp AB, Benjamin AC, Millward LJ, Makris S, Carver A, Imperatore V, Martínez VG, Sanz-Moreno V, Acton SE. Podoplanin drives dedifferentiation and amoeboid invasion of melanoma. iScience 2021; 24:102976. [PMID: 34485858 PMCID: PMC8405990 DOI: 10.1016/j.isci.2021.102976] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 05/12/2021] [Accepted: 08/10/2021] [Indexed: 02/02/2023] Open
Abstract
Melanoma is an aggressive skin cancer developing from melanocytes, frequently resulting in metastatic disease. Melanoma cells utilize amoeboid migration as mode of local invasion. Amoeboid invasion is characterized by rounded cell morphology and high actomyosin contractility driven by Rho GTPase signalling. Migrastatic drugs targeting actin polymerization and contractility are therefore a promising treatment option for metastatic melanoma. To predict amoeboid invasion and metastatic potential, biomarkers functionally linked to contractility pathways are needed. The glycoprotein podoplanin drives actomyosin contractility in lymphoid fibroblasts and is overexpressed in many cancers. We show that podoplanin enhances amoeboid invasion in melanoma. Podoplanin expression in murine melanoma drives rounded cell morphology, increasing motility, and invasion in vivo. Podoplanin expression is increased in a subset of dedifferentiated human melanoma, and in vitro is sufficient to upregulate melanoma-associated marker Pou3f2/Brn2. Together, our data define podoplanin as a functional biomarker for dedifferentiated invasive melanoma and a promising migrastatic therapeutic target.
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Affiliation(s)
- Charlotte M. de Winde
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Samantha L. George
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK,Barts Cancer Institute, John Vane Science Building, Charterhouse Square, Queen Mary University of London, London EC1M 6BQ, UK
| | - Eva Crosas-Molist
- Barts Cancer Institute, John Vane Science Building, Charterhouse Square, Queen Mary University of London, London EC1M 6BQ, UK
| | - Yukti Hari-Gupta
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Abbey B. Arp
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Agnesska C. Benjamin
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Lindsey J. Millward
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Spyridon Makris
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Alexander Carver
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Valerio Imperatore
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK,Cell Biogenesis and Tissue Regeneration Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Víctor G. Martínez
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Victoria Sanz-Moreno
- Barts Cancer Institute, John Vane Science Building, Charterhouse Square, Queen Mary University of London, London EC1M 6BQ, UK
| | - Sophie E. Acton
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK,Corresponding author
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5
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Nanamiya R, Takei J, Asano T, Sano M, Tanaka T, Hosono H, Harada H, Sakai Y, Mizuno T, Suzuki H, Kaneko MK, Kato Y. Ferret Podoplanin Is Detected by PMab-241 in Immunohistochemistry. Monoclon Antib Immunodiagn Immunother 2021; 40:134-140. [PMID: 34161160 DOI: 10.1089/mab.2021.0016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Podoplanin (PDPN) plays an important role in the development of many normal tissues and is expressed in various cancers. We have previously developed multiple monoclonal antibodies (mAbs) against PDPNs from a variety of animal species and characterized each of these PDPNs using the anti-PDPN mAbs. In this study, we evaluated whether these anti-PDPN mAbs possess cross-reactivity with ferret PDPN (ferPDPN) using flow cytometry. Comprehensive analysis using 17 differing anti-PDPN mAbs available for immunohistochemistry use, demonstrated that the anti-bear PDPN mAb (clone PMab-241) strongly cross-reacts with ferPDPN-overexpressed Chinese hamster ovary-K1 (CHO/ferPDPN) cells. Immunohistochemistry analysis demonstrated intense PMab-241 staining within Bowman's capsules and glomeruli of the ferret kidney, and lymphatic endothelial cells of the ferret lung. These results demonstrate that PMab-241 is suitable for the detection of PDPN in ferret tissues.
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Affiliation(s)
- Ren Nanamiya
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Junko Takei
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Teizo Asano
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masato Sano
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomohiro Tanaka
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hideki Hosono
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Harada
- Department of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yusuke Sakai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Takuya Mizuno
- Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Hiroyoshi Suzuki
- Department of Pathology and Laboratory Medicine, Sendai Medical Center, Sendai, Japan
| | - Mika K Kaneko
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yukinari Kato
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan.,New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
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6
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Zhang Y, Yang B, Davis JM, Drake MM, Younes M, Shen Q, Zhao Z, Cao Y, Ko TC. Distinct Murine Pancreatic Transcriptomic Signatures during Chronic Pancreatitis Recovery. Mediators Inflamm 2021; 2021:5595464. [PMID: 34104113 PMCID: PMC8158417 DOI: 10.1155/2021/5595464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/15/2021] [Accepted: 04/25/2021] [Indexed: 11/17/2022] Open
Abstract
We have previously demonstrated that the pancreas can recover from chronic pancreatitis (CP) lesions in the cerulein-induced mouse model. To explore how pancreatic recovery is achieved at the molecular level, we used RNA-sequencing (seq) and profiled transcriptomes during CP transition to recovery. CP was induced by intraperitoneally injecting cerulein in C57BL/6 mice. Time-matched controls (CON) were given normal saline. Pancreata were harvested from mice 4 days after the final injections (designated as CP and CON) or 4 weeks after the final injections (designated as CP recovery (CPR) and control recovery (CONR)). Pancreatic RNAs were extracted for RNA-seq and quantitative (q) PCR validation. Using RNA-seq, we identified a total of 3,600 differentially expressed genes (DEGs) in CP versus CON and 166 DEGs in CPR versus CONR. There are 132 DEGs overlapped between CP and CPR and 34 DEGs unique to CPR. A number of selected pancreatic fibrosis-relevant DEGs were validated by qPCR. The top 20 gene sets enriched from DEGs shared between CP and CPR are relevant to extracellular matrix and cancer biology, whereas the top 10 gene sets enriched from DEGs specific to CPR are pertinent to DNA methylation and specific signaling pathways. In conclusion, we identified a distinct set of DEGs in association with extracellular matrix and cancer cell activities to contrast CP and CPR. Once during ongoing CP recovery, DEGs relevant to DNA methylation and specific signaling pathways were induced to express. The DEGs shared between CP and CPR and the DEGs specific to CPR may serve as the unique transcriptomic signatures and biomarkers for determining CP recovery and monitoring potential therapeutic responses at the molecular level to reflect pancreatic histological resolution.
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Affiliation(s)
- Yinjie Zhang
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Baibing Yang
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Joy M. Davis
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Madeline M. Drake
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Mamoun Younes
- Department of Pathology & Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Pathology, George Washington University School of Medicine and Health Sciences, Washington, DC 20037, USA
| | - Qiang Shen
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Zhongming Zhao
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Yanna Cao
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Tien C. Ko
- Department of Surgery, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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7
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Schwab M, Lohr S, Schneider J, Kaiser M, Krunic D, Helbig D, Géraud C, Angel P. Podoplanin is required for tumor cell invasion in cutaneous squamous cell carcinoma. Exp Dermatol 2021; 30:1619-1630. [PMID: 33783869 DOI: 10.1111/exd.14344] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 02/28/2021] [Accepted: 03/19/2021] [Indexed: 11/30/2022]
Abstract
The invasiveness of late-stage cutaneous squamous cell carcinoma (cSCC) is associated with poor patients' prognosis and linked to strong upregulation of the glycoprotein Podoplanin (PDPN) in cancer cells. However, the function of PDPN in these processes in cSCC carcinogenesis has not been characterized in detail yet. Employing a CRISPR/Cas9-based loss-of-function approach on murine cSCC cells, we show that the loss of Pdpn results in decreased migration and invasion in vitro. Complementing these in vitro studies, labelled murine control and Pdpn knockout cells were injected orthotopically into the dermis of nude mice to recapitulate the formation of human cSCC displaying a well-differentiated morphology with a PDPN-positive reaction in fibroblasts in the tumor stroma. Smaller tumors were observed upon Pdpn loss, which is associated with reduced tumor cell infiltration into the stroma. Utilizing Pdpn mutants in functional experiments in vitro, we provide evidence that both the intra- and extracellular domains are essential for cancer cell invasion. These findings underline the critical role of PDPN in cSCC progression and highlight potential therapeutic strategies targeting PDPN-dependent cancer cell invasion, especially in late-stage cSCC patients.
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Affiliation(s)
- Melanie Schwab
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany.,Faculty of Biosciences, University Heidelberg, Heidelberg, Germany
| | - Sabrina Lohr
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany
| | - Jakob Schneider
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany.,Faculty of Biosciences, University Heidelberg, Heidelberg, Germany
| | - Michaela Kaiser
- Department of Functional Neuroanatomy, Institute for Anatomy and Cell Biology, Heidelberg University, Heidelberg, Germany
| | - Damir Krunic
- Light Microscopy Facility, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Doris Helbig
- Department of Dermatology and Venereology, University Clinic of Cologne, Cologne, Germany
| | - Cyrill Géraud
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty Mannheim, Center of Excellence in Dermatology, Heidelberg University, Mannheim, Germany.,Section of Clinical and Molecular Dermatology, Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany
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8
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Keratinocyte-Expressed Podoplanin is Dispensable for Multi-Step Skin Carcinogenesis. Cells 2020; 9:cells9061542. [PMID: 32599908 PMCID: PMC7348927 DOI: 10.3390/cells9061542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/21/2020] [Accepted: 06/21/2020] [Indexed: 02/06/2023] Open
Abstract
Podoplanin is a small transmembrane mucin-like glycoprotein that plays a crucial role in the development of the lung, heart and lymphatic vascular system. Its expression is upregulated in several types of human carcinomas and podoplanin levels in squamous cell carcinomas (SCCs) of the oral cavity and the lung correlate with cancer invasiveness, lymph node metastasis and shorter survival time of patients, indicating that podoplanin promotes tumor progression. However, its role during the early stages of carcinogenesis remain unclear. We generated mice with a specific deletion of podoplanin in epidermal keratinocytes (K5-Cre;Pdpnflox/flox mice) and subjected them to a multistep chemical skin carcinogenesis regimen. The rate of tumor initiation; the number, size and differentiation of tumors; and the malignant transformation rate were comparable in K5-Cre;Pdpnflox/flox mice and Pdpnflox/flox control mice. However, tumor cell invasion was reduced in K5-Cre;Pdpnflox/flox mice, in particular single cell invasion. Quantitative immunofluorescence analyses revealed that peritumoral lymphangiogenesis was reduced in K5-Cre;Pdpnflox/flox mice, whereas there were no major changes of tumor-associated immune cell subpopulations. Thus, keratinocyte-expressed podoplanin is dispensable for the early steps of skin carcinogenesis but contributes to the progression of established tumors.
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9
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Platelets and cancer-associated thrombosis: focusing on the platelet activation receptor CLEC-2 and podoplanin. Blood 2020; 134:1912-1918. [PMID: 31778548 DOI: 10.1182/blood.2019001388] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 08/17/2019] [Indexed: 12/12/2022] Open
Abstract
Patients with cancer have an increased risk of thromboembolism, which is the second leading cause of death in these patients. Several mechanisms of the prothrombotic state in these patients have been proposed. Among them are a platelet activation receptor, C-type lectin-like receptor 2 (CLEC-2), and its endogenous ligand podoplanin, which are the focus of this review. CLEC-2 is almost specifically expressed in platelets/megakaryocytes in humans. A membrane protein, podoplanin is expressed in certain types of cancer cells, including squamous cell carcinoma, brain tumor, and osteosarcoma, in addition to several normal tissues, including kidney podocytes and lymphatic endothelial cells but not vascular endothelial cells. In the bloodstream, podoplanin induces platelet activation by binding to CLEC-2 and facilitates hematogenous cancer metastasis and cancer-associated thrombosis. In an experimental lung metastasis model, the pharmacological depletion of CLEC-2 from platelets in mice resulted in a marked reduction of lung metastasis of podoplanin-expressing B16F10 cells. Control mice with B16F10 orthotopically inoculated in the back skin showed massive thrombus formation in the lungs, but the cancer-associated thrombus formation in CLEC-2-depleted mice was significantly inhibited, suggesting that CLEC-2-podoplanin interaction stimulates cancer-associated thrombosis. Thromboinflammation induced ectopic podoplanin expression in vascular endothelial cells or macrophages, which may also contribute to cancer-associated thrombosis. CLEC-2 depletion in cancer-bearing mice resulted in not only reduced cancer-associated thrombosis but also reduced levels of plasma inflammatory cytokines, anemia, and sarcopenia, suggesting that cancer-associated thrombosis may cause thromboinflammation and cancer cachexia. Blocking CLEC-2-podoplanin interaction may be a novel therapeutic strategy in patients with podoplanin-expressing cancer.
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10
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Suzuki-Inoue K. Platelets and cancer-associated thrombosis: focusing on the platelet activation receptor CLEC-2 and podoplanin. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2019; 2019:175-181. [PMID: 31808911 PMCID: PMC6913448 DOI: 10.1182/hematology.2019001388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Patients with cancer have an increased risk of thromboembolism, which is the second leading cause of death in these patients. Several mechanisms of the prothrombotic state in these patients have been proposed. Among them are a platelet activation receptor, C-type lectin-like receptor 2 (CLEC-2), and its endogenous ligand podoplanin, which are the focus of this review. CLEC-2 is almost specifically expressed in platelets/megakaryocytes in humans. A membrane protein, podoplanin is expressed in certain types of cancer cells, including squamous cell carcinoma, brain tumor, and osteosarcoma, in addition to several normal tissues, including kidney podocytes and lymphatic endothelial cells but not vascular endothelial cells. In the bloodstream, podoplanin induces platelet activation by binding to CLEC-2 and facilitates hematogenous cancer metastasis and cancer-associated thrombosis. In an experimental lung metastasis model, the pharmacological depletion of CLEC-2 from platelets in mice resulted in a marked reduction of lung metastasis of podoplanin-expressing B16F10 cells. Control mice with B16F10 orthotopically inoculated in the back skin showed massive thrombus formation in the lungs, but the cancer-associated thrombus formation in CLEC-2-depleted mice was significantly inhibited, suggesting that CLEC-2-podoplanin interaction stimulates cancer-associated thrombosis. Thromboinflammation induced ectopic podoplanin expression in vascular endothelial cells or macrophages, which may also contribute to cancer-associated thrombosis. CLEC-2 depletion in cancer-bearing mice resulted in not only reduced cancer-associated thrombosis but also reduced levels of plasma inflammatory cytokines, anemia, and sarcopenia, suggesting that cancer-associated thrombosis may cause thromboinflammation and cancer cachexia. Blocking CLEC-2-podoplanin interaction may be a novel therapeutic strategy in patients with podoplanin-expressing cancer.
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Affiliation(s)
- Katsue Suzuki-Inoue
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
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11
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Palaniappan M, Nguyen L, Grimm SL, Xi Y, Xia Z, Li W, Coarfa C. The genomic landscape of estrogen receptor α binding sites in mouse mammary gland. PLoS One 2019; 14:e0220311. [PMID: 31408468 PMCID: PMC6692022 DOI: 10.1371/journal.pone.0220311] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/12/2019] [Indexed: 01/15/2023] Open
Abstract
Estrogen receptor α (ERα) is the major driving transcription factor in the mammary gland development as well as breast cancer initiation and progression. However, the genomic landscape of ERα binding sites in the normal mouse mammary gland has not been completely elucidated. Here, we mapped genome-wide ERα binding events by chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) in the mouse mammary gland in response to estradiol. We identified 6237 high confidence ERα binding sites in two biological replicates and showed that many of these were located at distal enhancer regions. Furthermore, we discovered 3686 unique genes in the mouse genome that recruit ER in response to estradiol. Interrogation of ER-DNA binding sites in ER-positive luminal epithelial cells showed that the ERE, PAX2, SF1, and AP1 motifs were highly enriched at distal enhancer regions. In addition, comprehensive transcriptome analysis by RNA-seq revealed that 493 genes are differentially regulated by acute treatment with estradiol in the mouse mammary gland in vivo. Through integration of RNA-seq and ERα ChIP-seq data, we uncovered a novel ERα targetome in mouse mammary epithelial cells. Taken together, our study has identified the genomic landscape of ERα binding events in mouse mammary epithelial cells. Furthermore, our study also highlights the cis-regulatory elements and cofactors that are involved in estrogen signaling and may contribute to ductal elongation in the normal mouse mammary gland.
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Affiliation(s)
- Murugesan Palaniappan
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, United States of America
- * E-mail:
| | - Loc Nguyen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, United States of America
| | - Sandra L. Grimm
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, United States of America
| | - Yuanxin Xi
- Division of Biostatistics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, United States of America
| | - Zheng Xia
- Division of Biostatistics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, United States of America
| | - Wei Li
- Division of Biostatistics, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, United States of America
| | - Cristian Coarfa
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, United States of America
- Advanced Technology Core, Baylor College of Medicine, Houston, United States of America
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12
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Eisemann T, Costa B, Peterziel H, Angel P. Podoplanin Positive Myeloid Cells Promote Glioma Development by Immune Suppression. Front Oncol 2019; 9:187. [PMID: 30972297 PMCID: PMC6443903 DOI: 10.3389/fonc.2019.00187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/04/2019] [Indexed: 12/19/2022] Open
Abstract
The dynamic and interactive tumor microenvironment is conceived as a considerable parameter in tumor development and therapy response. Implementing this knowledge in the development of future cancer treatments could provide novel options in the combat of highly aggressive and difficult-to-treat tumors such as gliomas. One compartment of the tumor microenvironment that has gained growing interest is the immune system. As endogenous defense machinery the immune system has the capacity to fight against cancer cells. This, however, is frequently circumvented by tumor cells engaging immune-regulatory mechanisms that disable tumor-directed immune responses. Thus, in order to unlock the immune system against cancer cells, it is crucial to characterize in great detail individual tumor-associated immune cell subpopulations and dissect whether and how they influence immune evasion. In this study we investigated the function of a tumor-associated myeloid cell subpopulation characterized by podoplanin expression on the development of high-grade glioma tumors. Here, we show that the deletion of podoplanin in myeloid cells results in increased (CD8+) T-cell infiltrates and significantly prolonged survival in an orthotopic transplantation model. In vitro co-cultivation experiments indicate a podoplanin-dependent transcriptional regulation of arginase-1, a well-known player in myeloid cell-mediated immune suppression. These findings identify podoplanin positive myeloid cells as one novel mediator of the glioma-induced immune suppression. Thus, the targeted ablation of podoplanin positive myeloid cells could be included in combinatorial cancer therapies to enhance immune-mediated tumor elimination.
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Affiliation(s)
- Tanja Eisemann
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany.,Faculty of Biosciences, University Heidelberg, Heidelberg, Germany
| | - Barbara Costa
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany
| | - Heike Peterziel
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany.,Translational Program, Hopp Children's Cancer Center at NCT Heidelberg (KiTZ), University Hospital and DKFZ Heidelberg, Heidelberg, Germany.,Clinical Cooperation Unit Pediatric Oncology, DKFZ, German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany
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13
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Podoplanin in Inflammation and Cancer. Int J Mol Sci 2019; 20:ijms20030707. [PMID: 30736372 PMCID: PMC6386838 DOI: 10.3390/ijms20030707] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 02/07/2023] Open
Abstract
Podoplanin is a small cell-surface mucin-like glycoprotein that plays a crucial role in the development of the alveoli, heart, and lymphatic vascular system. Emerging evidence indicates that it is also involved in the control of mammary stem-cell activity and biogenesis of platelets in the bone marrow, and exerts an important function in the immune response. Podoplanin expression is upregulated in different cell types, including fibroblasts, macrophages, T helper cells, and epithelial cells, during inflammation and cancer, where it plays important roles. Podoplanin is implicated in chronic inflammatory diseases, such as psoriasis, multiple sclerosis, and rheumatoid arthritis, promotes inflammation-driven and cancer-associated thrombosis, and stimulates cancer cell invasion and metastasis through a variety of strategies. To accomplish its biological functions, podoplanin must interact with other proteins located in the same cell or in neighbor cells. The binding of podoplanin to its ligands leads to modulation of signaling pathways that regulate proliferation, contractility, migration, epithelial⁻mesenchymal transition, and remodeling of the extracellular matrix. In this review, we describe the diverse roles of podoplanin in inflammation and cancer, depict the protein ligands of podoplanin identified so far, and discuss the mechanistic basis for the involvement of podoplanin in all these processes.
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14
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Retzbach EP, Sheehan SA, Nevel EM, Batra A, Phi T, Nguyen ATP, Kato Y, Baredes S, Fatahzadeh M, Shienbaum AJ, Goldberg GS. Podoplanin emerges as a functionally relevant oral cancer biomarker and therapeutic target. Oral Oncol 2018; 78:126-136. [PMID: 29496040 DOI: 10.1016/j.oraloncology.2018.01.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 12/14/2017] [Accepted: 01/18/2018] [Indexed: 12/22/2022]
Abstract
Oral cancer has become one of the most aggressive types of cancer, killing 140,000 people worldwide every year. Current treatments for oral cancer include surgery and radiation therapies. These procedures can be very effective; however, they can also drastically decrease the quality of life for survivors. New chemotherapeutic treatments are needed to more effectively combat oral cancer. The transmembrane receptor podoplanin (PDPN) has emerged as a functionally relevant oral cancer biomarker and chemotherapeutic target. PDPN expression promotes tumor cell migration leading to oral cancer invasion and metastasis. Here, we describe the role of PDPN in oral squamous cell carcinoma progression, and how it may be exploited to prevent and treat oral cancer.
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Affiliation(s)
- Edward P Retzbach
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Stephanie A Sheehan
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Evan M Nevel
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Amber Batra
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Tran Phi
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Angels T P Nguyen
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Yukinari Kato
- New Industry Creation Hatchery Center, Tohoku University; Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Soly Baredes
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Mahnaz Fatahzadeh
- Department of Diagnostic Sciences, New Jersey School of Dental Medicine, Rutgers University, Newark, NJ 07103 USA
| | - Alan J Shienbaum
- Department of Pathology, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Gary S Goldberg
- Department of Molecular Biology and Graduate School of Biomedical Sciences, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA.
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15
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Kunita A, Baeriswyl V, Meda C, Cabuy E, Takeshita K, Giraudo E, Wicki A, Fukayama M, Christofori G. Inflammatory Cytokines Induce Podoplanin Expression at the Tumor Invasive Front. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1276-1288. [PMID: 29458011 DOI: 10.1016/j.ajpath.2018.01.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 01/02/2018] [Accepted: 01/23/2018] [Indexed: 01/12/2023]
Abstract
Tumor invasion is a critical first step in the organismic dissemination of cancer cells and the formation of metastasis in distant organs, the most important prognostic factor and the actual cause of death in most of the cancer patients. We report herein that the cell surface protein podoplanin (PDPN), a potent inducer of cancer cell invasion, is conspicuously expressed by the invasive front of squamous cell carcinomas (SCCs) of the cervix in patients and in the transgenic human papillomavirus/estrogen mouse model of cervical cancer. Laser capture microscopy combined with gene expression profiling reveals that the expression of interferon-responsive genes is up-regulated in PDPN-expressing cells at the tumor invasive front, which are exposed to CD45-positive inflammatory cells. Indeed, PDPN expression can be induced in cultured SCC cell lines by single or combined treatments with interferon-γ, transforming growth factor-β, and/or tumor necrosis factor-α. Notably, shRNA-mediated ablation of either PDPN or STAT1 in A431 SCC cells repressed cancer cell invasion on s.c. transplantation into immunodeficient mice. The results highlight the induction of tumor cell invasion by the inflammatory cytokine-stimulated expression of PDPN in the outermost cell layers of cervical SCC.
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Affiliation(s)
- Akiko Kunita
- Department of Biomedicine, University of Basel, Basel, Switzerland; Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | | | - Claudia Meda
- Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute-The Fondazione del Piemonte per l'Oncologia, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Torino, Italy, the Department of Science and Drug Technology, University of Torino, Candiolo, Italy
| | - Erik Cabuy
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland; The CAEX Project, CAEX NV, Lier, Belgium
| | - Kimiko Takeshita
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Enrico Giraudo
- Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute-The Fondazione del Piemonte per l'Oncologia, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Torino, Italy, the Department of Science and Drug Technology, University of Torino, Candiolo, Italy
| | - Andreas Wicki
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Masashi Fukayama
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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16
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Shatirishvili M, Burk AS, Franz CM, Pace G, Kastilan T, Breuhahn K, Hinterseer E, Dierich A, Bakiri L, Wagner EF, Ponta H, Hartmann TN, Tanaka M, Orian-Rousseau V. Epidermal-specific deletion of CD44 reveals a function in keratinocytes in response to mechanical stress. Cell Death Dis 2016; 7:e2461. [PMID: 27831556 PMCID: PMC5260879 DOI: 10.1038/cddis.2016.342] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/18/2016] [Accepted: 09/23/2016] [Indexed: 11/09/2022]
Abstract
CD44, a large family of transmembrane glycoproteins, plays decisive roles in physiological and pathological conditions. CD44 isoforms are involved in several signaling pathways essential for life such as growth factor-induced signaling by EGF, HGF or VEGF. CD44 is also the main hyaluronan (HA) receptor and as such is involved in HA-dependent processes. To allow a genetic dissection of CD44 functions in homeostasis and disease, we generated a Cd44 floxed allele allowing tissue- and time-specific inactivation of all CD44 isoforms in vivo. As a proof of principle, we inactivated Cd44 in the skin epidermis using the K14Cre allele. Although the skin of such Cd44Δker mutants appeared morphologically normal, epidermal stiffness was reduced, wound healing delayed and TPA induced epidermal thickening decreased. These phenotypes might be caused by cell autonomous defects in differentiation and HA production as well as impaired adhesion and migration on HA by Cd44Δker keratinocytes. These findings support the usefulness of the conditional Cd44 allele in unraveling essential physiological and pathological functions of CD44 isoforms.
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Affiliation(s)
- M Shatirishvili
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - A S Burk
- University of Heidelberg, Institute of Physical Chemistry, Heidelberg, Germany
| | - C M Franz
- Karlsruhe Institute of Technology, DFG-Center for Functional Nanostructures, Karlsruhe, Germany
| | - G Pace
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - T Kastilan
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - K Breuhahn
- Heidelberg University Hospital, Institute of Pathology, Heidelberg, Germany
| | - E Hinterseer
- Laboratory for Immunological and Molecular Cancer Research, Third Medical Department with Hematology, Medical Oncology, Hemostaseology, Infectious Diseases, and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - A Dierich
- Institut Clinique de la Souris Illkirch, Illkirch, France
| | - L Bakiri
- Spanish National Cancer Centre, Genes Development and Disease Group, Cancer Cell Biology Programme, Madrid, Spain
| | - E F Wagner
- Spanish National Cancer Centre, Genes Development and Disease Group, Cancer Cell Biology Programme, Madrid, Spain
| | - H Ponta
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - T N Hartmann
- Laboratory for Immunological and Molecular Cancer Research, Third Medical Department with Hematology, Medical Oncology, Hemostaseology, Infectious Diseases, and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - M Tanaka
- University of Heidelberg, Institute of Physical Chemistry, Heidelberg, Germany.,Institute for Integrated Cell-Material Sciences (WPI iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - V Orian-Rousseau
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
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17
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Emerging roles of podoplanin in vascular development and homeostasis. Front Med 2016; 9:421-30. [PMID: 26498027 DOI: 10.1007/s11684-015-0424-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 08/24/2015] [Indexed: 02/03/2023]
Abstract
Podoplanin (PDPN) is a mucin-type O-glycoprotein expressed in diverse cell types, such as lymphatic endothelial cells (LECs) in the vascular system and fibroblastic reticular cells (FRCs) in lymph nodes. PDPN on LECs or FRCs activates CLEC-2 in platelets, triggering platelet activation and/or aggregation through downstream signaling events, including activation of Syk kinase. This mechanism is required to initiate and maintain separation of blood and lymphatic vessels and to stabilize high endothelial venule integrity within lymphnodes. In the vascular system, normal expression of PDPN at the LEC surface requires transcriptional activation of Pdpn by Prox1 and modification of PDPN with core 1-derived O-glycans. This review provides a comprehensive overview of the roles of PDPN in vascular development and lymphoid organ maintenance and discusses the mechanisms that regulate PDPN expression related to its function.
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18
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Baars S, Bauer C, Szabowski S, Hartenstein B, Angel P. Epithelial deletion of podoplanin is dispensable for re-epithelialization of skin wounds. Exp Dermatol 2016; 24:785-7. [PMID: 26121181 DOI: 10.1111/exd.12781] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2015] [Indexed: 01/29/2023]
Abstract
The mucin-like transmembrane protein podoplanin (PDPN) is prominently represented in tumor-associated gene expression signatures of numerous types of cancer including squamous cell carcinoma, and gain-of-function and knockdown approaches in tissue culture strongly suggested an important role of PDPN in cell proliferation, migration and adhesion. PDPN is absent during epidermal homeostasis but is highly expressed in basal keratinocytes during cutaneous wound healing. Enhanced motility of immortalized keratinocytes upon ectopic PDPN overexpression argues for wound healing defects upon podoplanin deficiency in keratinocytes; however, in vivo data that unequivocally define the impact of PDPN by functional studies in a physiologically relevant system are still missing. Here, we have applied an in vivo loss-of-function approach by generating a novel transgenic mouse line with keratinocyte-specific podoplanin deficiency. Performing cutaneous full-thickness excisional wounds to examine re-epithelialization capacity, unexpectedly, no defects were observed in wound healing properties of mutant mice. Similarly, PDPN-deficient primary keratinocytes showed no impairment in migration, adhesion or proliferation. Thus, PDPN function is not rate-limiting for re-epithelialization but may be functionally compensated by an as yet unknown protein. Our data also call for in vivo functional studies on PDPN in settings of skin tumor development and progression to clarify PDPN's role in skin pathology.
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Affiliation(s)
- Sebastian Baars
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Christine Bauer
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sibylle Szabowski
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Bettina Hartenstein
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
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19
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Weekes D, Kashima TG, Zandueta C, Perurena N, Thomas DP, Sunters A, Vuillier C, Bozec A, El-Emir E, Miletich I, Patiño-Garcia A, Lecanda F, Grigoriadis AE. Regulation of osteosarcoma cell lung metastasis by the c-Fos/AP-1 target FGFR1. Oncogene 2016; 35:2852-61. [PMID: 26387545 PMCID: PMC4688957 DOI: 10.1038/onc.2015.344] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 07/05/2015] [Accepted: 07/24/2015] [Indexed: 12/13/2022]
Abstract
Osteosarcoma is the most common primary malignancy of the skeleton and is prevalent in children and adolescents. Survival rates are poor and have remained stagnant owing to chemoresistance and the high propensity to form lung metastases. In this study, we used in vivo transgenic models of c-fos oncogene-induced osteosarcoma and chondrosarcoma in addition to c-Fos-inducible systems in vitro to investigate downstream signalling pathways that regulate osteosarcoma growth and metastasis. Fgfr1 (fibroblast growth factor receptor 1) was identified as a novel c-Fos/activator protein-1(AP-1)-regulated gene. Induction of c-Fos in vitro in osteoblasts and chondroblasts caused an increase in Fgfr1 RNA and FGFR1 protein expression levels that resulted in increased and sustained activation of mitogen-activated protein kinases (MAPKs), morphological transformation and increased anchorage-independent growth in response to FGF2 ligand treatment. High levels of FGFR1 protein and activated pFRS2α signalling were observed in murine and human osteosarcomas. Pharmacological inhibition of FGFR1 signalling blocked MAPK activation and colony growth of osteosarcoma cells in vitro. Orthotopic injection in vivo of FGFR1-silenced osteosarcoma cells caused a marked twofold to fivefold decrease in spontaneous lung metastases. Similarly, inhibition of FGFR signalling in vivo with the small-molecule inhibitor AZD4547 markedly reduced the number and size of metastatic nodules. Thus deregulated FGFR signalling has an important role in osteoblast transformation and osteosarcoma formation and regulates the development of lung metastases. Our findings support the development of anti-FGFR inhibitors as potential antimetastatic therapy.
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Affiliation(s)
- Daniel Weekes
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Takeshi G Kashima
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Carolina Zandueta
- Division of Oncology, Adhesion and Metastasis Laboratory, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Naiara Perurena
- Division of Oncology, Adhesion and Metastasis Laboratory, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - David P Thomas
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Andrew Sunters
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Céline Vuillier
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Aline Bozec
- Department of Rheumatology and Immunology, Universitätsklinikum Erlangen, Germany
| | - Ethaar El-Emir
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Isabelle Miletich
- Department of Craniofacial Development and Stem Cell Biology, King’s College London, UK
| | - Ana Patiño-Garcia
- Laboratory of Pediatrics, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Fernando Lecanda
- Division of Oncology, Adhesion and Metastasis Laboratory, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
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20
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Riemondy K, Wang XJ, Torchia EC, Roop DR, Yi R. MicroRNA-203 represses selection and expansion of oncogenic Hras transformed tumor initiating cells. eLife 2015. [PMID: 26203562 PMCID: PMC4536367 DOI: 10.7554/elife.07004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In many mouse models of skin cancer, only a few tumors typically form even though many cells competent for tumorigenesis receive the same oncogenic stimuli. These observations suggest an active selection process for tumor-initiating cells. Here, we use quantitative mRNA- and miR-Seq to determine the impact of HrasG12V on the transcriptome of keratinocytes. We discover that microRNA-203 is downregulated by HrasG12V. Using a knockout mouse model, we demonstrate that loss of microRNA-203 promotes selection and expansion of tumor-initiating cells. Conversely, restoration of microRNA-203 using an inducible model potently inhibits proliferation of these cells. We comprehensively identify microRNA-203 targets required for Hras-initiated tumorigenesis. These targets include critical regulators of the Ras pathway and essential genes required for cell division. This study establishes a role for the loss of microRNA-203 in promoting selection and expansion of Hras mutated cells and identifies a mechanism through which microRNA-203 antagonizes Hras-mediated tumorigenesis. DOI:http://dx.doi.org/10.7554/eLife.07004.001 DNA mutations occur and accumulate during an individual's lifetime. Often these changes are harmless. But some mutations—called driver mutations—can trigger the formation of tumors. This is often because these mutations allow the cells to grow faster than normal cells. Mutations in genes in the Ras gene family are among the most common driver mutations found in human cancers. These common mutations lead to the uncontrolled activation of genes that are normally tightly controlled, which in turn allows the cells to divide more and live for longer: these are two key features of cancer cells. So, how are Ras genes and the genes that they control regulated to prevent such dangerous over activation? One mechanism rests on binding sites in their messenger RNA sequence that are recognized by smaller RNA molecules called microRNAs. RNA molecules are created when genes are transcribed. Some RNAs, called messenger RNAs, are then decoded to create proteins. Many other RNAs, including microRNAs, do not code for proteins, but instead bind to many messenger RNA targets, and repress their ability to be decoded into proteins. Three genes, called Hras, Kras, and Nras, are regulated in this way by numerous microRNAs, which together act to dampen the normal activities of these genes. Riemondy et al. investigate how a cancer-promoting mutation in the Hras gene affects the activities of microRNAs in mouse skin cells in culture. By measuring RNA levels, the experiments reveal that skin cells carrying this mutation produce significantly lower levels of what is normally the most highly produced microRNA in the skin. This microRNA, called microRNA-203, acts to limit the proliferation of skin cells when these cells are dividing rapidly. When the gene encoding microRNA-203 was deleted in mice, the skin cells proliferated more. These mice also developed more skin tumors than normal mice when they were exposed to cancer-causing chemicals. When the gene for microRNA-203 was added into skin cells carrying the Hras mutation and then activated, the cells both divided less and, as a results, grew less. This indicates that microRNA-203 could prevent cancerous cells from expanding in number, a key event in the initiation of tumors. Riemondy et al. also used a variety of approaches to identify the molecules targeted by microRNA-203 in the skin, and reveal that it targets multiple signaling pathways, including components of the Ras pathway, to suppress cell proliferation. Together, these findings highlight microRNA-203 as a potential source of new treatments to prevent or slow tumor growth in humans. DOI:http://dx.doi.org/10.7554/eLife.07004.002
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Affiliation(s)
- Kent Riemondy
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Boulder, United States
| | - Xiao-jing Wang
- Department of Pathology, University of Colorado Denver Anschutz Medical Campus, Denver, United States
| | - Enrique C Torchia
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Denver, United States
| | - Dennis R Roop
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Denver, United States
| | - Rui Yi
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Boulder, United States
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21
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Namkung JH, Kim E, Park YD, Park G, Yang JM. Are Podoplanin Gene Polymorphisms Associated with Atopic Dermatitis in Koreans? Ann Dermatol 2015; 27:275-82. [PMID: 26082584 PMCID: PMC4466280 DOI: 10.5021/ad.2015.27.3.275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/18/2014] [Accepted: 09/29/2014] [Indexed: 01/25/2023] Open
Abstract
Background The histologic characteristics of atopic dermatitis (AD) include perivascular edema and dilated tortuous vessels in the papillary dermis. A single nucleotide polymorphism (SNP) of the fms-related tyrosine kinase 4 (FLT4) gene is associated with AD. Objective To investigate the associations between podoplanin (PDPN) gene SNPs and AD. Methods We genotyped 9 SNPs from 5 genes of 1,119 subjects (646 AD patients and 473 controls). We determined the promoter activity of 1 SNP (rs355022) by luciferase assay; this SNP was further investigated using 1,133 independent samples (441 AD patients and 692 controls). Results The rs355022 and rs425187 SNPs and the C-A haplotype in the PDPN gene were significantly associated with intrinsic AD in the initial experiment. The rs355022 SNP significantly affected promoter activity in the luciferase assay. However, these results were not replicated in the replication study. Conclusion Two SNPs and the C-A haplotype in the PDPN gene are significantly associated with intrinsic AD; although, the results were confirmed by luciferase assay, they could not be replicated with independent samples. Nevertheless, further replication experiments should be performed in future studies.
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Affiliation(s)
- Jung-Hyun Namkung
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. ; Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Eugene Kim
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yong-Doo Park
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. ; Yangtze Delta Region Institute of Tsinghua University, Zhejiang, China
| | - Geontae Park
- Laboratory of Cellular Neurobiology, Department of Oral Anatomy, School of Dentistry, Seoul National University, Seoul, Korea
| | - Jun-Mo Yang
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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KIM HYUNYI, RHA KISANG, SHIM GEUNAE, KIM JUHEE, KIM JINMAN, HUANG SONGMEI, KOO BONSEOK. Podoplanin is involved in the prognosis of head and neck squamous cell carcinoma through interaction with VEGF-C. Oncol Rep 2015; 34:833-42. [DOI: 10.3892/or.2015.4070] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 06/02/2015] [Indexed: 11/05/2022] Open
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Ohta N, Ishiguro S, Kawabata A, Uppalapati D, Pyle M, Troyer D, De S, Zhang Y, Becker KG, Tamura M. Human umbilical cord matrix mesenchymal stem cells suppress the growth of breast cancer by expression of tumor suppressor genes. PLoS One 2015; 10:e0123756. [PMID: 25942583 PMCID: PMC4420498 DOI: 10.1371/journal.pone.0123756] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 02/24/2015] [Indexed: 12/25/2022] Open
Abstract
Human and rat umbilical cord matrix mesenchymal stem cells (UCMSC) possess the ability to control the growth of breast carcinoma cells. Comparative analyses of two types of UCMSC suggest that rat UCMSC-dependent growth regulation is significantly stronger than that of human UCMSC. Their different tumoricidal abilities were clarified by analyzing gene expression profiles in the two types of UCMSC. Microarray analysis revealed differential gene expression between untreated naïve UCMSC and those co-cultured with species-matched breast carcinoma cells. The analyses screened 17 differentially expressed genes that are commonly detected in both human and rat UCMSC. The comparison between the two sets of gene expression profiles identified two tumor suppressor genes, adipose-differentiation related protein (ADRP) and follistatin (FST), that were specifically up-regulated in rat UCMSC, but down-regulated in human UCMSC when they were co-cultured with the corresponding species' breast carcinoma cells. Over-expression of FST, but not ADRP, in human UCMSC enhanced their ability to suppress the growth of MDA-231 cells. The growth of MDA-231 cells was also significantly lower when they were cultured in medium conditioned with FST, but not ADRP over-expressing human UCMSC. In the breast carcinoma lung metastasis model generated with MDA-231 cells, systemic treatment with FST-over-expressing human UCMSC significantly attenuated the tumor burden. These results suggest that FST may play an important role in exhibiting stronger tumoricidal ability in rat UCMSC than human UCMSC and also implies that human UCMSC can be transformed into stronger tumoricidal cells by enhancing tumor suppressor gene expression.
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Affiliation(s)
- Naomi Ohta
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Susumu Ishiguro
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Atsushi Kawabata
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Deepthi Uppalapati
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Marla Pyle
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Deryl Troyer
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
| | - Supriyo De
- Gene Expression and Genomics Unit, NIH Biomedical Research Center, National Institute on Aging, NIH, Baltimore, MD, 21224, United States of America
| | - Yongqing Zhang
- Gene Expression and Genomics Unit, NIH Biomedical Research Center, National Institute on Aging, NIH, Baltimore, MD, 21224, United States of America
| | - Kevin G. Becker
- Gene Expression and Genomics Unit, NIH Biomedical Research Center, National Institute on Aging, NIH, Baltimore, MD, 21224, United States of America
| | - Masaaki Tamura
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, 66506, United States of America
- * E-mail:
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Renart J, Carrasco-Ramírez P, Fernández-Muñoz B, Martín-Villar E, Montero L, Yurrita MM, Quintanilla M. New insights into the role of podoplanin in epithelial-mesenchymal transition. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2015; 317:185-239. [PMID: 26008786 DOI: 10.1016/bs.ircmb.2015.01.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Podoplanin is a small mucin-like transmembrane protein expressed in several adult tissues and with an important role during embryogenesis. It is needed for the proper development of kidneys and lungs as well as accurate formation of the lymphatic vascular system. In addition, it is involved in the physiology of the immune system. A wide variety of tumors express podoplanin, both in the malignant cells and in the stroma. Although there are exceptions, the presence of podoplanin results in poor prognosis. The main consequence of forced podoplanin expression in established and tumor-derived cell lines is an increase in cell migration and, eventually, the triggering of an epithelial-mesenchymal transition, whereby cells acquire a fibroblastoid phenotype and increased motility. We will examine the current status of the role of podoplanin in the induction of epithelial-mesenchymal transition as well as the different interactions that lead to this program.
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Affiliation(s)
- Jaime Renart
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, Madrid, Spain
| | | | | | - Ester Martín-Villar
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, Madrid, Spain
| | - Lucía Montero
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, Madrid, Spain
| | - María M Yurrita
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, Madrid, Spain
| | - Miguel Quintanilla
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM, Madrid, Spain
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25
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Tabuchi Y, Wada S, Ikegame M, Kariya A, Furusawa Y, Hoshi N, Yunoki T, Suzuki N, Takasaki I, Kondo T, Suzuki Y. Development of oral epithelial cell line ROE2 with differentiation potential from transgenic rats harboring temperature-sensitive simian virus40 large T-antigen gene. Exp Anim 2014; 63:31-44. [PMID: 24521861 PMCID: PMC4160936 DOI: 10.1538/expanim.63.31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
We have developed an immortalized oral epithelial cell line, ROE2, from fetal transgenic
rats harboring temperature-sensitive simian virus 40 large T-antigen gene. The cells grew
continuously at either a permissive temperature of 33°C or an intermediate temperature of
37°C. At the nonpermissive temperature of 39°C, on the other hand, growth decreased
significantly, and the Sub-G1 phase of the cell cycle increased, indicating that the cells
undergo apoptosis at a nonpermissive temperature. Histological and immunocytochemical
analyses revealed that ROE2 cells at 37°C had a stratified epithelial-like morphology and
expressed cytokeratins Krt4 and Krt13, marker proteins for oral nonkeratinized epithelial
cells. Global-scale comprehensive microarray analysis, coupled with bioinformatics tools,
demonstrated a significant gene network that was obtained from the upregulated genes. The
gene network contained 16 genes, including Cdkn1a, Fos,
Krt13, and Prdm1, and was associated mainly with the
biological process of skin development in the category of biological functions, organ
development. These four genes were validated by quantitative real-time polymerase chain
reaction, and the results were nearly consistent with the microarray data. It is therefore
anticipated that this cell line will be useful as an in vitro model for
studies such as physiological functions, as well as for gene expression in oral epithelial
cells.
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Affiliation(s)
- Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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Inoue H, Tsuchiya H, Miyazaki Y, Kikuchi K, Ide F, Sakashita H, Kusama K. Podoplanin expressing cancer-associated fibroblasts in oral cancer. Tumour Biol 2014; 35:11345-52. [PMID: 25119595 DOI: 10.1007/s13277-014-2450-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/04/2014] [Indexed: 01/01/2023] Open
Abstract
Podoplanin is a mucin-type glycoprotein widely used as a lymphatic endothelial marker. It is well known that podoplanin is expressed in various neoplasms including oral squamous cell carcinoma (OSCC). Apart from podoplanin expression in cancer cells, recent studies have suggested that podoplanin expression in stromal cancer-associated fibroblasts (CAFs) may be an indicator of poor prognosis in various cancers. In the present study, we performed immunohistochemical analyses of podoplanin and alpha-smooth muscle actin (α-SMA) in OSCC in order to clarify the significance of podoplanin-positive CAFs. Paraffin-embedded tissue specimens of 69 primary and 29 corresponding metastatic lesions in lymph nodes were examined immunohistochemically using antibodies against podoplanin and α-SMA. Podoplanin-positive stromal fibroblasts were detected in 51 (73.9%) of the 69 primary OSCCs and 24 (82.8%) of the 29 lymph nodes metastases. α-SMA immunoreactivity was observed in 39 (56.5%) of the primaries and 24 (82.8%) of the metastases. Further examination showed that 38 (74.5%) of the primary lesions and 23 (95.8%) of the metastases with podoplanin positivity were also positive for α-SMA. In addition, the intensity of α-SMA immunoreactivity increased as that of podoplanin became stronger. Podoplanin-positive CAFs are considered to be myofibroblasts that may contribute to progression of oral cancer.
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Affiliation(s)
- Harumi Inoue
- Division of Pathology, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Sakado, Saitama, 350-0283, Japan,
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Pan Y, Wang WD, Yago T. Transcriptional regulation of podoplanin expression by Prox1 in lymphatic endothelial cells. Microvasc Res 2014; 94:96-102. [DOI: 10.1016/j.mvr.2014.05.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 05/24/2014] [Accepted: 05/26/2014] [Indexed: 01/23/2023]
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Podoplanin—a novel marker in oral carcinogenesis. Tumour Biol 2014; 35:8407-13. [DOI: 10.1007/s13277-014-2266-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Accepted: 06/19/2014] [Indexed: 02/04/2023] Open
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Płaszczyca A, Nilsson J, Magnusson L, Brosjö O, Larsson O, Vult von Steyern F, Domanski HA, Lilljebjörn H, Fioretos T, Tayebwa J, Mandahl N, Nord KH, Mertens F. Fusions involving protein kinase C and membrane-associated proteins in benign fibrous histiocytoma. Int J Biochem Cell Biol 2014; 53:475-81. [PMID: 24721208 DOI: 10.1016/j.biocel.2014.03.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 03/25/2014] [Accepted: 03/26/2014] [Indexed: 11/30/2022]
Abstract
Benign fibrous histiocytoma (BFH) is a mesenchymal tumor that most often occurs in the skin (so-called dermatofibroma), but may also appear in soft tissues (so-called deep BFH) and in the skeleton (so-called non-ossifying fibroma). The origin of BFH is unknown, and it has been questioned whether it is a true neoplasm. Chromosome banding, fluorescence in situ hybridization, single nucleotide polymorphism arrays, RNA sequencing, RT-PCR and quantitative real-time PCR were used to search for recurrent somatic mutations in a series of BFH. BFHs were found to harbor recurrent fusions of genes encoding membrane-associated proteins (podoplanin, CD63 and LAMTOR1) with genes encoding protein kinase C (PKC) isoforms PRKCB and PRKCD. PKCs are serine-threonine kinases that through their many phosphorylation targets are implicated in a variety of cellular processes, as well as tumor development. When inactive, the amino-terminal, regulatory domain of PKCs suppresses the activity of their catalytic domain. Upon activation, which requires several steps, they typically translocate to cell membranes, where they interact with different signaling pathways. The detected PDPN-PRKCB, CD63-PRKCD and LAMTOR1-PRKCD gene fusions are all predicted to result in chimeric proteins consisting of the membrane-binding part of PDPN, CD63 or LAMTOR1 and the entire catalytic domain of the PKC. This novel pathogenetic mechanism should result in constitutive kinase activity at an ectopic location. The results show that BFH indeed is a true neoplasm, and that distorted PKC activity is essential for tumorigenesis. The findings also provide means to differentiate BFH from other skin and soft tissue tumors. This article is part of a Directed Issue entitled: Rare cancers.
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Affiliation(s)
- Anna Płaszczyca
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Jenny Nilsson
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Linda Magnusson
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Otte Brosjö
- Department of Orthopedics, Karolinska University Hospital, SE-171 76 Solna, Sweden
| | - Olle Larsson
- Department of Pathology, Karolinska University Hospital, SE-171 76 Solna, Sweden
| | | | - Henryk A Domanski
- Department of Pathology, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Henrik Lilljebjörn
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Thoas Fioretos
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Johnbosco Tayebwa
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Nils Mandahl
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Karolin H Nord
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden
| | - Fredrik Mertens
- Department of Clinical Genetics, University and Regional Laboratories, Lund University, SE-221 85 Lund, Sweden.
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Briso EM, Guinea-Viniegra J, Bakiri L, Rogon Z, Petzelbauer P, Eils R, Wolf R, Rincón M, Angel P, Wagner EF. Inflammation-mediated skin tumorigenesis induced by epidermal c-Fos. Genes Dev 2013; 27:1959-73. [PMID: 24029918 PMCID: PMC3792473 DOI: 10.1101/gad.223339.113] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Briso et al. find that c-fos expression in the mouse epidermis is sufficient to promote inflammation-mediated epidermal hyperplasia. c-Fos transcriptionally controls mmp10 and s100a7a15 expression in keratinocytes, promoting CD4 T-cell recruitment to the skin. Combining c-fos expression with the carcinogen DMBA leads to the development of highly invasive SCCs, which was prevented by the anti-inflammatory drug sulindac. Human SCCs display a correlation between c-FOS and MMP10 and S100A15 proteins as well as CD4 T-cell infiltration. This work reveals promising therapeutic strategies to treat SCCs. Skin squamous cell carcinomas (SCCs) are the second most prevalent skin cancers. Chronic skin inflammation has been associated with the development of SCCs, but the contribution of skin inflammation to SCC development remains largely unknown. In this study, we demonstrate that inducible expression of c-fos in the epidermis of adult mice is sufficient to promote inflammation-mediated epidermal hyperplasia, leading to the development of preneoplastic lesions. Interestingly, c-Fos transcriptionally controls mmp10 and s100a7a15 expression in keratinocytes, subsequently leading to CD4 T-cell recruitment to the skin, thereby promoting epidermal hyperplasia that is likely induced by CD4 T-cell-derived IL-22. Combining inducible c-fos expression in the epidermis with a single dose of the carcinogen 7,12-dimethylbenz(a)anthracene (DMBA) leads to the development of highly invasive SCCs, which are prevented by using the anti-inflammatory drug sulindac. Moreover, human SCCs display a correlation between c-FOS expression and elevated levels of MMP10 and S100A15 proteins as well as CD4 T-cell infiltration. Our studies demonstrate a bidirectional cross-talk between premalignant keratinocytes and infiltrating CD4 T cells in SCC development. Therefore, targeting inflammation along with the newly identified targets, such as MMP10 and S100A15, represents promising therapeutic strategies to treat SCCs.
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Affiliation(s)
- Eva M Briso
- BBVA Foundation-Spanish National Cancer Research Center (CNIO) Cancer Cell Biology Program, CNIO, 28029 Madrid, Spain
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Mashhadiabbas F, Mahjour F, Mahjour SB, Fereidooni F, Hosseini FS. The immunohistochemical characterization of MMP-2, MMP-10, TIMP-1, TIMP-2, and podoplanin in oral squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 114:240-50. [PMID: 22769410 DOI: 10.1016/j.oooo.2012.04.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 04/17/2012] [Accepted: 04/20/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVES The aim of this study was to immunohistochemically evaluate the expression of matrix metalloproteinase (MMP)-1, MMP- 2, tissue inhibitor of metalloproteinase (TIMP)-1, TIMP-2, and podoplanin in oral squamous cell carcinoma (OSCC). Immunohistochemical staining of podoplanin-positive lymphatic vessel density (LVD) was also assessed. STUDY DESIGN Forty cases of OSCC were analyzed by immunohistochemistry. RESULTS MMP-2, MMP-10, TIMP-1, TIMP-2, and podoplanin were detected in each of the 40 OSCC cases. The expression of MMP-2 was significantly correlated with histologic grade. The expression of podoplanin was positively correlated with gender and negatively correlated with tumor size. A significant positive correlation was also detected between LVD and the presence of lymph node metastases, gender, age, and diameter of the lymph node (if involved), as well as histologic grade. CONCLUSIONS The results are suggestive of important roles that MMP-2, MMP-10, TIMP-2, and podoplanin play in pathologic processes of OSCC, including invasion. Our findings also suggest that LVD may play a role in lymphatic metastasis and tumor progression.
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Affiliation(s)
- Fatemeh Mashhadiabbas
- Department of Oral and Maxillofacial Pathology, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
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Intercellular contact augments epidermal growth factor receptor (EGFR) and signal transducer and activator of transcription 3 (STAT3)-activation which increases podoplanin-expression in order to promote squamous cell carcinoma motility. Cell Signal 2013; 25:760-5. [DOI: 10.1016/j.cellsig.2012.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 12/18/2012] [Indexed: 01/13/2023]
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Krishnan H, Ochoa-Alvarez JA, Shen Y, Nevel E, Lakshminarayanan M, Williams MC, Ramirez MI, Miller WT, Goldberg GS. Serines in the intracellular tail of podoplanin (PDPN) regulate cell motility. J Biol Chem 2013; 288:12215-21. [PMID: 23530051 DOI: 10.1074/jbc.c112.446823] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Podoplanin (PDPN) is a transmembrane receptor that affects the activities of Rho, ezrin, and other proteins to promote tumor cell motility, invasion, and metastasis. PDPN is found in many types of cancer and may serve as a tumor biomarker and chemotherapeutic target. The intracellular region of PDPN contains only two serines, and these are conserved in mammals including mice and humans. We generated cells from the embryos of homozygous null Pdpn knock-out mice to investigate the relevance of these serines to cell growth and migration on a clear (PDPN-free) background. We report here that one or both of these serines can be phosphorylated by PKA (protein kinase A). We also report that conversion of these serines to nonphosphorylatable alanine residues enhances cell migration, whereas their conversion to phosphomimetic aspartate residues decreases cell migration. These results indicate that PKA can phosphorylate PDPN to decrease cell migration. In addition, we report that PDPN expression in fibroblasts causes them to facilitate the motility and viability of neighboring melanoma cells in coculture. These findings shed new light on how PDPN promotes cell motility, its role in tumorigenesis, and its utility as a functionally relevant biomarker and chemotherapeutic target.
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Affiliation(s)
- Harini Krishnan
- Graduate School of Biomedical Sciences and Department of Molecular Biology, School of Osteopathic Medicine, University of Medicine and Dentistry of New Jersey, Stratford, New Jersey 08084, USA
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Fujita N, Takagi S. The impact of Aggrus/podoplanin on platelet aggregation and tumour metastasis. J Biochem 2012; 152:407-13. [PMID: 22992842 DOI: 10.1093/jb/mvs108] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Platelets are small blood components that play indispensable roles in the initial stages of coagulation. In addition to their role in haemostasis, platelets participate in inflammation and tissue regeneration under physiological conditions. Recent studies also revealed the role of platelets under pathological conditions, including the oncogenic process. Platelets enhance tumour growth and metastasis by secreting many growth factors and angiogenic factors or by forming a coat around tumour cells in the blood stream. We previously discovered Aggrus (also known as podoplanin, gp36, gp38P, T1alpha and OTS-8) expressed on tumour cell surfaces as a key molecule for tumour-induced platelet aggregation. Aggrus expression is increased in various malignant tumours such as squamous cell carcinomas, mesotheliomas, glioblastomas and osteosarcomas. Detailed analysis revealed that Aggrus contains three tandem repeats of platelet aggregation-stimulating (PLAG) domains that are associated with its platelet aggregation-inducing ability. PLAG domains of Aggrus are involved in binding to its platelet receptor, C-type lectin-like receptor 2 (CLEC-2). Neutralizing monoclonal antibodies that interfere with Aggrus-CLEC-2 binding attenuate Aggrus-induced platelet aggregation, tumour cell growth and metastasis formation. Aggrus is also expressed in advanced atherosclerotic lesions, suggesting that Aggrus is associated with thrombus formation on disrupted atherosclerotic lesions. These data suggest that Aggrus is a promising cell surface target for developing new therapies against cancer and thrombosis.
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Affiliation(s)
- Naoya Fujita
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Tokyo 135-8550, Japan.
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Astarita JL, Acton SE, Turley SJ. Podoplanin: emerging functions in development, the immune system, and cancer. Front Immunol 2012; 3:283. [PMID: 22988448 PMCID: PMC3439854 DOI: 10.3389/fimmu.2012.00283] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 08/22/2012] [Indexed: 12/16/2022] Open
Abstract
Podoplanin (PDPN) is a well-conserved, mucin-type transmembrane protein expressed in multiple tissues during ontogeny and in adult animals, including the brain, heart, kidney, lungs, osteoblasts, and lymphoid organs. Studies of PDPN-deficient mice have demonstrated that this molecule plays a critical role in development of the heart, lungs, and lymphatic system. PDPN is widely used as a marker for lymphatic endothelial cells and fibroblastic reticular cells of lymphoid organs and for lymphatics in the skin and tumor microenvironment. Much of the mechanistic insight into PDPN biology has been gleaned from studies of tumor cells; tumor cells often upregulate PDPN as they undergo epithelial-mesenchymal transition and this upregulation is correlated with increased motility and metastasis. The physiological role of PDPN that has been most studied is its ability to aggregate and activate CLEC-2-expressing platelets, as PDPN is the only known endogenous ligand for CLEC-2. However, more recent studies have revealed that PDPN also plays crucial roles in the biology of immune cells, including T cells and dendritic cells. This review will provide a comprehensive overview of the diverse roles of PDPN in development, immunology, and cancer.
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Affiliation(s)
- Jillian L Astarita
- Department of Cancer Immunology and AIDS, Dana Farber Cancer Institute Boston, MA, USA ; Division of Medical Sciences, Harvard Medical School Boston, MA, USA
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Kreppel M, Krakowezki A, Kreppel B, Drebber U, Wedemeyer I, Mauch C, Zöller JE, Scheer M. Podoplanin expression in cutaneous head and neck squamous cell carcinoma-prognostic value and clinicopathologic implications. J Surg Oncol 2012; 107:376-83. [DOI: 10.1002/jso.23238] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 07/13/2012] [Indexed: 11/09/2022]
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37
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Guinea-Viniegra J, Zenz R, Scheuch H, Jiménez M, Bakiri L, Petzelbauer P, Wagner EF. Differentiation-induced skin cancer suppression by FOS, p53, and TACE/ADAM17. J Clin Invest 2012; 122:2898-910. [PMID: 22772468 DOI: 10.1172/jci63103] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 05/30/2012] [Indexed: 12/22/2022] Open
Abstract
Squamous cell carcinomas (SCCs) are heterogeneous and aggressive skin tumors for which innovative, targeted therapies are needed. Here, we identify a p53/TACE pathway that is negatively regulated by FOS and show that the FOS/p53/TACE axis suppresses SCC by inducing differentiation. We found that epidermal Fos deletion in mouse tumor models or pharmacological FOS/AP-1 inhibition in human SCC cell lines induced p53 expression. Epidermal cell differentiation and skin tumor suppression were caused by a p53-dependent transcriptional activation of the metalloprotease TACE/ADAM17 (TNF-α-converting enzyme), a previously unknown p53 target gene that was required for NOTCH1 activation. Although half of cutaneous human SCCs display p53-inactivating mutations, restoring p53/TACE activity in mouse and human skin SCCs induced tumor cell differentiation independently of the p53 status. We propose FOS/AP-1 inhibition or p53/TACE reactivating strategies as differentiation-inducing therapies for SCCs.
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Affiliation(s)
- Juan Guinea-Viniegra
- Fundación Banco Bilbao Vizcaya (F-BBVA) - CNIO Cancer Cell Biology Program, Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
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Peterziel H, Müller J, Danner A, Barbus S, Liu HK, Radlwimmer B, Pietsch T, Lichter P, Schütz G, Hess J, Angel P. Expression of podoplanin in human astrocytic brain tumors is controlled by the PI3K-AKT-AP-1 signaling pathway and promoter methylation. Neuro Oncol 2012; 14:426-39. [PMID: 22394497 DOI: 10.1093/neuonc/nos055] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Recently, we found strong overexpression of the mucin-type glycoprotein podoplanin (PDPN) in human astrocytic brain tumors, specifically in primary glioblastoma multiforme (GB). In the current study, we show an inverse correlation between PDPN expression and PTEN levels in primary human GB and glioma cell lines, and we report elevated PDPN protein levels in the subventricular zone of brain tissue sections of PTEN-deficient mice. In human glioma cells lacking functional PTEN, reintroduction of wild-type PTEN, inhibition of the PTEN downstream target protein kinase B/AKT, or interference with transcription factor AP-1 function resulted in efficient downregulation of PDPN expression. In addition, we observed hypoxia-dependent PDPN transcriptional control and demonstrated that PDPN expression is subject to negative transcriptional regulation by promoter methylation in human GB and in glioma cell lines. Treatment of PTEN-negative glioma cells with demethylating agents induced expression of PDPN. Together, our findings show that increased PDPN expression in human GB is caused by loss of PTEN function and activation of the PI3K-AKT-AP-1 signaling pathway, accompanied by epigenetic regulation of PDPN promoter activity. Silencing of PDPN expression leads to reduced proliferation and migration of glioma cells, suggesting a functional role of PDPN in glioma progression and malignancy. Thus, specific targeting of PDPN expression and/or function could be a promising strategy for the treatment of patients with primary GB.
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Affiliation(s)
- Heike Peterziel
- Divisions of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, Heidelberg, Germany.
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Honma M, Minami-Hori M, Takahashi H, Iizuka H. Podoplanin expression in wound and hyperproliferative psoriatic epidermis: regulation by TGF-β and STAT-3 activating cytokines, IFN-γ, IL-6, and IL-22. J Dermatol Sci 2012; 65:134-40. [PMID: 22189341 DOI: 10.1016/j.jdermsci.2011.11.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 11/09/2011] [Accepted: 11/15/2011] [Indexed: 01/23/2023]
Abstract
BACKGROUND Podoplanin (PDPN)/T1α/aggrus/PA2.26 antigen, a transmembranous glycoprotein, is a well-known lymphatic endothelial marker. Recent evidence indicates that PDPN is also expressed in keratinocytes especially of sebaceous glands. OBJECTIVE To verify expression-pattern and the regulatory mechanism of PDPN in human epidermal keratinocytes. METHODS PDPN-expression pattern was analyzed in normal and psoriatic epidermis by immunostaining. The regulatory mechanism of PDPN-expression of keratinocytes by cytokines was analyzed using specific inhibitors, siRNA, and adenoviral shRNA of signaling pathways. RESULTS In normal skin, PDPN was expressed on the basal cell layer of sebaceous glands and on the outer root sheath of hair follicles. While no expression was detected in the normal interfollicular epidermis, PDPN was detected in the basal cell layer of wound and hyperproliferative psoriatic epidermis, where the granular layer is lacking. TGF-β1 and IFN-γ independently upregulated PDPN-expression of keratinocytes via TGF-β receptor-Smad pathway and JAK-STAT pathway, respectively. IL-6 and IL-22 also stimulated PDPN-expression of keratinocytes accompanied by STAT-3 phosphorylation. siRNA of STAT-1, inhibitors of STAT-3 signaling, AG490, STAT-3 inhibitor VI, and si/shRNA of STAT-3 inhibited the PDPN-expression of keratinocytes induced by IFN-γ, IL-6 and IL-22 but not by TGF-β1. CONCLUSION These results indicate that TGF-β1, IFN-γ, IL-6, and IL-22 induce PDPN-expression of keratinocytes, which might be significantly involved in the wound healing process as well as in the pathomechanism of hyperproliferative psoriatic epidermis.
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Affiliation(s)
- Masaru Honma
- Department of Dermatology, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Japan.
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Inoue H, Miyazaki Y, Kikuchi K, Yoshida N, Ide F, Ohmori Y, Tomomura A, Sakashita H, Kusama K. Podoplanin expression during dysplasia–carcinoma sequence in the oral cavity. Tumour Biol 2011; 33:183-94. [DOI: 10.1007/s13277-011-0261-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 10/25/2011] [Indexed: 01/22/2023] Open
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Podoplanin is regulated by AP-1 and promotes platelet aggregation and cell migration in osteosarcoma. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:1041-9. [PMID: 21801875 DOI: 10.1016/j.ajpath.2011.04.027] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 04/02/2011] [Accepted: 04/29/2011] [Indexed: 11/20/2022]
Abstract
Podoplanin is a type-I transmembrane sialomucin-like protein, which is expressed in a wide range of cell types and is involved in platelet aggregation and tumor metastasis. Here, we investigated the function, regulation, and expression of podoplanin in osteosarcoma. Podoplanin expression was observed in three osteosarcoma cell lines (MG-63, HOS, and U-2 OS) with platelet aggregation-inducing ability, which was blocked by podoplanin small-interfering RNA or a neutralizing antibody. Overexpression of podoplanin in nonmetastatic Dunn osteosarcoma cells promoted cell migration without attenuating cell proliferation. Both podoplanin and TGF-β1 were up-regulated by c-Fos induction in MC3T3-E1 osteoblastic cells, and were highly expressed in c-Fos transgenic mouse osteosarcomas and c-Fos-transformed osteosarcoma cell lines. Immunohistochemistry of human osteosarcoma tissue microarrays (n = 133) showed staining of tumor cells embedded in an excess of irregular neoplastic bone matrix in 100% of tumors undergoing so-called "normalization/maturation." Podoplanin was also expressed in osteosarcoma subtypes, with 65% of osteoblastic, 100% of chondroblastic, and 79% of fibroblastic tumors. CD44 and pERM immunohistochemistry showed coexpression with podoplanin in both mouse and human osteosarcoma. Podoplanin expression was significantly higher in metastatic osteosarcomas (n = 6) than in primary osteosarcomas (n = 10). Our data suggest that podoplanin, which is not expressed in normal osteoblasts but in osteocytes, is aberrantly expressed in transformed osteoblasts and in osteosarcoma, and is under AP-1 transcriptional control. Thus podoplanin is a candidate molecule for therapeutic targeting.
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Kashima TG, Dongre A, Flanagan AM, Hogendoorn PCW, Taylor R, Athanasou NA. Podoplanin expression in adamantinoma of long bones and osteofibrous dysplasia. Virchows Arch 2011; 459:41-6. [DOI: 10.1007/s00428-011-1081-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 03/08/2011] [Accepted: 04/03/2011] [Indexed: 11/30/2022]
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Lazić D, Alborzi F, Marcuzzi GP, Angel P, Hess J, Pfister H, Akgül B. Enhanced StefinA and Sprr2 expression during papilloma formation in HPV8 transgenic mice. J Dermatol Sci 2011; 62:84-90. [PMID: 21458245 DOI: 10.1016/j.jdermsci.2011.02.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 02/16/2011] [Accepted: 02/19/2011] [Indexed: 11/30/2022]
Abstract
BACKGROUND The human papillomavirus type 8 (HPV8) is associated with the development of non-melanoma skin cancer. Transgenic mice expressing the complete early gene region of HPV8 (E6/E7/E1/E2/E4=CER) or E6 separately under the control of the keratin14 promoter spontaneously developed papillomas characterized by varying degrees of epidermal dysplasia. Papilloma growth could be synchronized by a single UVA/B irradiation of the skin, which led to the development of papillomas within three weeks. OBJECTIVE The objective of this study was to identify alterations in cellular gene expression correlated with HPV8 oncogene expression in transgenic mice. METHODS We applied global gene expression profiling by microarray analysis and confirmed deregulation of cellular genes by qRT-PCR and immunohistochemical analysis. RESULTS By comparison of non-lesional HPV8-CER skin with skin of the parental mouse strain FVB/n, two cellular genes, namely StefinA and Sprr2, coding for precursor proteins of the cornified envelope, were predicted to be strongly upregulated in transgenic skin, which could be confirmed in subsequent qRT-PCR experiments. StefinA and Sprr2 mRNA expression was enhanced until day 7 after UV treatment with higher levels in HPV8 positive skin. While the expression of both genes returned to a normal level in the course of epidermis regeneration in wt mice, the expression persisted elevated in hyperplastic transgenic skin. Staining of an UV induced papilloma of FVB/n wt mouse revealed also strong expression of StefinA and Sprr2 indicating that upregulation in later stages of papilloma formation is independent of HPV8. CONCLUSION In non-lesional HPV8-CER transgenic skin StefinA and Sprr2 were found to be indirect/direct transcriptional targets of HPV8.
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Affiliation(s)
- Daliborka Lazić
- Institute of Virology, University of Cologne, Fürst-Pückler-Str. 56, 50935 Cologne, Germany
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Bakiri L, Reschke MO, Gefroh HA, Idarraga MH, Polzer K, Zenz R, Schett G, Wagner EF. Functions of Fos phosphorylation in bone homeostasis, cytokine response and tumourigenesis. Oncogene 2010; 30:1506-17. [PMID: 21119595 DOI: 10.1038/onc.2010.542] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mice lacking c-fos develop osteopetrosis due to a block in osteoclast differentiation. Carboxy-terminal phosphorylation of Fos on serine 374 by ERK1/2 and serine 362 by RSK1/2 regulates Fos stability and transactivation potential in vitro. To assess the physiological relevance of Fos phosphorylation in vivo, serine 362 and/or serine 374 was replaced by alanine (Fos362A, Fos374A and FosAA) or by phospho-mimetic aspartic acid (FosDD). Homozygous mutants were healthy and skeletogenesis was largely unaffected. Fos C-terminal phosphorylation, predominantly on serine 374, was found important for osteoclast differentiation in vitro and affected lipopolysaccharide (LPS)-induced cytokine response in vitro and in vivo. Importantly, skin papilloma development was delayed in FosAA, Fos362A and Rsk2-deficient mice, accelerated in FosDD mice and unaffected in Fos374A mutants. Furthermore, the related Fos protein and putative RSK2 target Fra1 failed to substitute for Fos in papilloma development. This indicates that phosphorylation of serines 362 and 374 exerts context-dependent roles in modulating Fos activity in vivo. Inhibition of Fos C-terminal phosphorylation on serine 362 by targeting RSK2 might be of therapeutic relevance for skin tumours.
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Affiliation(s)
- L Bakiri
- Genes, Development and Disease Group, F-BBVA Cancer Cell Biology programme, National Cancer Research Centre (CNIO), Madrid, Spain
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Sawa Y. New trends in the study of podoplanin as a cell morphological regulator. JAPANESE DENTAL SCIENCE REVIEW 2010. [DOI: 10.1016/j.jdsr.2010.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Wang H, Liu Y, Briesemann M, Yan J. Computational analysis of gene regulation in animal sleep deprivation. Physiol Genomics 2010; 42:427-36. [PMID: 20501693 DOI: 10.1152/physiolgenomics.00205.2009] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Sleep is an animal behavior shared by a wide range of species, suggesting that it must serve fundamental functions. However, the functions and molecular mechanisms underlying sleep are largely unknown. Through a meta-analysis of all available short-term sleep deprivation (SD) microarray data in mouse brain, we identified 91 key mouse SD-affected genes and two RBM3 isoforms showing opposite changes of expression during SD. Although most of the key SD-affected genes showed consistent changes of expression during SD across brain subregions despite their heterogeneous basal expression levels, we also identified the genes whose SD responses strongly depend upon the brain subregion. A gene regulatory network was also constructed for these genes showing that cAMP-responsive element (CRE) is one of the key cis-regulatory elements controlling SD-affected genes. We observed that SD during an animal's normal sleeping time could significantly disturb the circadian oscillation of clock genes. Surprisingly, synaptogenesis markers were significantly underexpressed in SD mice, differing from the previous findings in rat and fly. Comparing SD microarray data in mouse, rat, sparrow, and fly, we identified Egr and Nr4a gene families as conserved SD-affected genes, thus shedding new light on the origin of sleep in animals.
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Affiliation(s)
- Haifang Wang
- CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes of Biological Sciences, Shanghai, China
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48
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Impact of podoplanin expression in oral squamous cell carcinoma: clinical and histopathologic correlations. Virchows Arch 2010; 456:473-82. [DOI: 10.1007/s00428-010-0915-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 03/02/2010] [Accepted: 03/29/2010] [Indexed: 01/22/2023]
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49
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Shen Y, Chen CS, Ichikawa H, Goldberg GS. SRC induces podoplanin expression to promote cell migration. J Biol Chem 2010; 285:9649-9656. [PMID: 20123990 DOI: 10.1074/jbc.m109.047696] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nontransformed cells can force tumor cells to assume a normal morphology and phenotype by the process of contact normalization. Transformed cells must escape this process to become invasive and malignant. However, mechanisms underlying contact normalization have not been elucidated. Here, we have identified genes that are affected by contact normalization of Src-transformed cells. Tumor cells must migrate to become invasive and malignant. Src must phosphorylate the adaptor protein Cas (Crk-associated substrate) to promote tumor cell motility. We report here that Src utilizes Cas to induce podoplanin (Pdpn) expression to promote tumor cell migration. Pdpn is a membrane-bound extracellular glycoprotein that associates with endogenous ligands to promote tumor cell migration leading to cancer invasion and metastasis. In fact, Pdpn expression accounted for a major part of the increased migration seen in Src-transformed cells. Moreover, nontransformed cells suppressed Pdpn expression in adjacent Src-transformed cells. Of >39,000 genes, Pdpn was one of only 23 genes found to be induced by transforming Src activity and suppressed by contact normalization of Src-transformed cells. In addition, we found 16 genes suppressed by Src and induced by contact normalization. These genes encode growth factor receptors, adaptor proteins, and products that have not yet been annotated and may play important roles in tumor cell growth and migration.
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Affiliation(s)
- Yongquan Shen
- Molecular Biology Department, Stratford, New Jersey 08084
| | - Chen-Shan Chen
- Molecular Biology Department, Stratford, New Jersey 08084; Graduate School of Biomedical Sciences, University of Medicine and Dentistry of New Jersey, Stratford, New Jersey 08084
| | - Hitoshi Ichikawa
- Cancer Transcriptome Project, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku,Tokyo 104-0045, Japan
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Zustin J, Scheuer HA, Friedrich RE. Podoplanin expression in human tooth germ tissues and cystic odontogenic lesions: an immunohistochemical study. J Oral Pathol Med 2010; 39:115-20. [DOI: 10.1111/j.1600-0714.2009.00853.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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