1
|
Srinivasan V, Shyam N, Kumar GK, Narayen V, Konda P, Swetha Rani K. A Comparison of Podoplanin Expression in Oral Leukoplakia and Oral Squamous Cell Carcinoma: An Immunohistochemical Study. Cureus 2023; 15:e38467. [PMID: 37273383 PMCID: PMC10238285 DOI: 10.7759/cureus.38467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2023] [Indexed: 06/06/2023] Open
Abstract
INTRODUCTION Oral squamous cell carcinoma (OSCC) accounts for about 90% to 95% of all malignancies of the oral cavity.The majority of OSCCs are preceded by oral potentially malignant disorders (OPMDs). Podoplanin (PDPN) is a mucin-like small transmembrane glycoprotein. Alterations in PDPN immunoexpression have been reported in OPMDs and OSCCs. OBJECTIVE The objectives of this study were to evaluate the role of PDPN immunoexpression in oral leukoplakia (OL) and different histological grades of OSCC and to assess the role of PDPN as a potential biomarker for predicting the risk of malignant transformation. MATERIALS AND METHODOLOGY Immunohistochemical analysis for PDPN was performed in 45 histologically confirmed cases of formalin-fixed, paraffin-embedded specimens of different grades of OSCCs and 15 cases of OLs with 15 cases of the normal oral mucosa (NOM) as controls. The expression and distribution of this marker were analyzed in these lesions. RESULTS The immunoexpression of PDPN showed a significant increase in the expression of the percentage of positive cells, staining intensity, location of staining in the epithelium, tumor islands, and within the cells, as well as the mean lymphatic micro vessel density between NOMs, OLs, and different grades of OSCCs. CONCLUSION Upregulation of PDPN can be related to the malignant transformation of OLs and biological aggressiveness of OSCCs. The enhanced immunoexpression of PDPN signifies that this immunomarker can have a role in tumor cell differentiation and the neoplastic progression of OSCCs. Increased density of lymphatic vessels suggested an important role of lymphangiogenesis in tumor progression and also as a prognostic factor for lymph nodal metastasis.
Collapse
Affiliation(s)
- Vaishnavi Srinivasan
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| | - Ndvn Shyam
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| | - G Kiran Kumar
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| | - Vaishali Narayen
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| | - Paremala Konda
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| | - Korra Swetha Rani
- Department of Oral Pathology, Government Dental College and Hospital, Hyderabad, IND
| |
Collapse
|
2
|
de Assis EM, Rodrigues M, Vieira JC, Pascoaloti MIM, Junior HM, Souto GR, Souza PEA, Horta MCR. Lymphatic Vascular Density, the Expression of Podoplanin and Tumor Budding in Oral Squamous Cell Carcinoma. Head Neck Pathol 2022:10.1007/s12105-022-01511-z. [PMID: 36480090 DOI: 10.1007/s12105-022-01511-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/19/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Notwithstanding recent advances in oral squamous cell carcinoma (OSCC) management, its mortality rate is still high. It is imperative to investigate new parameters that are complementary to clinical staging for OSCC to provide better prognostic insight. The presence of isolated neoplastic cells or small clusters of up to four cells at the tumor's invasive front, called tumor budding, is a morphological marker of OSCC with prognostic value. Increased lymphatic vascular density (LVD) and a high expression of podoplanin in neoplastic cells have also been associated with worse prognosis in OSCC. To investigate these markers in OSCC, we evaluated differences in LVD and the expression of podoplanin in neoplastic cells between tumors with high-intensity tumor budding versus low-intensity or no tumor budding. In the samples of high-intensity budding, differences in those parameters between the budding area and the area outside the budding were also evaluated. Furthermore, the study assessed differences in LVD and in the expression of podoplanin in neoplastic cells concerning OSCC clinicopathological characteristics. METHODS To those ends, we subjected 150 samples of OSCC to immunohistochemistry to evaluate the intensity of tumor budding (via multi-cytokeratin immunostaining). Moreover, the 150 samples of OSCC and 15 specimens of normal oral mucosa (used as a control) were employed to assess LVD and the expression of podoplanin (in neoplastic cells of OSCC and in the lining epithelium of normal oral mucosa), both via podoplanin immunostaining. Data were processed into descriptive and analytical statistics. RESULTS No differences were observed neither in the LVD nor in the expression of podoplanin in neoplastic cells concerning sex, age, tobacco smoking, tumor location and tumor size. The LVD was greater in OSCC and in tumors with high-intensity budding than in normal mucosa but did not differ between normal mucosa and tumors with low-intensity or no tumor budding. The data analyses also revealed that LVD was greater in tumors with high-intensity tumor budding than in tumors with low-intensity or no budding and showed no difference in LVD between the budding area and the area outside the budding. When compared to the lining epithelium of the normal mucosa, the expression of podoplanin was greater in neoplastic cells of OSCC, tumors with high-intensity budding and tumors with low-intensity or no tumor budding. The expression of podoplanin in neoplastic cells was also greater in tumors with high-intensity budding and, within those tumors, greater in the budding area than in the area outside de budding. CONCLUSION Those findings support the hypothesis that tumor budding is a biological phenomenon associated with the progression and biological behavior of OSCC.
Collapse
Affiliation(s)
- Eliene Magda de Assis
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil.,Faculdade Pitágoras de Ipatinga, Ipatinga, MG, Brazil
| | - Mayara Rodrigues
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil
| | - Jéssica Campos Vieira
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil
| | - Maria Inês Mantuani Pascoaloti
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil
| | - Helvécio Marangon Junior
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil.,Centro Universitário de Patos de Minas (UNIPAM), Patos de Minas, MG, Brazil
| | - Giovanna Ribeiro Souto
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil.,Departamento de Odontologia - Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar 500, Prédio 46, Sala 101, Belo Horizonte, Minas Gerais, CEP: 30535-901, Brasil
| | - Paulo Eduardo Alencar Souza
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil.,Departamento de Odontologia - Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar 500, Prédio 46, Sala 101, Belo Horizonte, Minas Gerais, CEP: 30535-901, Brasil
| | - Martinho Campolina Rebello Horta
- Oral Pathology Section and Graduate Program in Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, MG, Brazil. .,Departamento de Odontologia - Pontifícia Universidade Católica de Minas Gerais, Avenida Dom José Gaspar 500, Prédio 46, Sala 101, Belo Horizonte, Minas Gerais, CEP: 30535-901, Brasil.
| |
Collapse
|
3
|
Kühn JP, Bochen F, Körner S, Schick B, Wagner M, Smola S, Berkó-Göttel B, Morris LGT, Wang J, Bozzato A, Linxweiler M. Podoplanin expression in lymph node metastases of head and neck cancer and cancer of unknown primary patients. Int J Biol Markers 2022; 37:280-288. [PMID: 35880270 DOI: 10.1177/03936155221105524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Head and neck squamous cell carcinomas (HNSCCs) are cancers with generally poor prognosis. Outcomes have not improved in decades, with more than half of the patients presenting with lymph node metastases at the time of diagnosis. A unique subtype of HNSCC, cancer of unknown primary of the head and neck (HNCUP) is associated with a poor outcome. Increased expression of the D2-40 gene (podoplanin) has been described for several human malignancies and has been associated with increased metastatic potential of cancer cells. METHODS In order to examine the role of podoplanin in lymph node metastasis of HNSCC generally and HNCUP specifically, we evaluated the prognostic impact of podoplanin expression in HNSCC- (n = 68) and HNCUP-associated lymph node metastases (n = 30). The expression of podoplanin was analyzed by immunohistochemical staining of lymph node tissue samples and correlated with clinical and histopathological data. RESULTS We found a non-significant tendency towards a higher podoplanin expression in HNCUP compared to HNSCC lymph node metastases and a significant correlation between a high podoplanin expression and advanced node-stage classification. Podoplanin expression had no significant impact on overall survival for both groups and did not correlate with human papillomavirus tumor status. CONCLUSION Taken together, our results suggest that upregulation of podoplanin may be associated with a stimulation of lymphatic metastasis in head and neck cancer.
Collapse
Affiliation(s)
- Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, Homburg, Germany
| | - Sigrun Smola
- Institute of Virology, Saarland University Medical Center, Homburg, Germany
| | | | - Luc G T Morris
- Department of Surgery, 5803Memorial Sloan Kettering Cancer Center, New York City, NY, USA.,Human Oncology and Pathogenesis Program, 39072Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Jingming Wang
- Human Oncology and Pathogenesis Program, 39072Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Alessandro Bozzato
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| |
Collapse
|
4
|
Park SY, Lee SK, Lim M, Kim B, Hwang BO, Cho ES, Zhang X, Chun KS, Chung WY, Song NY. Direct Contact with Platelets Induces Podoplanin Expression and Invasion in Human Oral Squamous Cell Carcinoma Cells. Biomol Ther (Seoul) 2022; 30:284-290. [PMID: 35110423 PMCID: PMC9047494 DOI: 10.4062/biomolther.2021.167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/31/2021] [Accepted: 01/07/2022] [Indexed: 11/22/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is mostly diagnosed at an advanced stage, with local and/or distal metastasis. Thus, locoregional and/or local control of the primary tumor is crucial for a better prognosis in patients with OSCC. Platelets have long been considered major players in cancer metastasis. Traditional antiplatelet agents, such as aspirin, are thought to be potential chemotherapeutics, but they need to be used with caution because of the increased bleeding risk. Podoplanin (PDPN)-expressing cancer cells can activate platelets and promote OSCC metastasis. However, the reciprocal effect of platelets on PDPN expression in OSCC has not been investigated. In this study, we found that direct contact with platelets upregulated PDPN and integrin β1 at the protein level and promoted invasiveness of human OSCC Ca9.22 cells that express low levels of PDPN. In another human OSCC HSC3 cell line that express PDPN at an abundant level, silencing of the PDPN gene reduced cell invasiveness. Analysis of the public database further supported the co-expression of PDPN and integrin β1 and their increased expression in metastatic tissues compared to normal and tumor tissues of the oral cavity. Taken together, these data suggest that PDPN is a potential target to regulate platelet-tumor interaction and metastasis for OSCC treatment, which can overcome the limitations of traditional antiplatelet drugs.
Collapse
Affiliation(s)
- Se-Young Park
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul 03722, Republic of Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Sun Kyoung Lee
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Mihwa Lim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Bomi Kim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Byeong-Oh Hwang
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul 03722, Republic of Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Eunae Sandra Cho
- BK21 Four Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Oral Pathology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Xianglan Zhang
- Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Pathology, Yanbian University Hospital, Yanji City, Jilin Province 133000, China
| | - Kyung-Soo Chun
- College of Pharmacy, Keimyung University, Daegu 42601, Republic of Korea
| | - Won-Yoon Chung
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul 03722, Republic of Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Na-Young Song
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul 03722, Republic of Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| |
Collapse
|
5
|
The Role of Podoplanin in Skin Diseases. Int J Mol Sci 2022; 23:ijms23031310. [PMID: 35163233 PMCID: PMC8836045 DOI: 10.3390/ijms23031310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/22/2022] [Accepted: 01/23/2022] [Indexed: 02/05/2023] Open
Abstract
Podoplanin is a sialomucin-like type I transmembrane receptor glycoprotein that is expressed specifically in lymphatic vessels, sebaceous glands, and hair follicles in normal skin. However, under pathological conditions podoplanin expression is upregulated in various cells, such as keratinocytes, fibroblasts, tumor cells, and inflammatory cells, and plays pivotal roles in different diseases. In psoriasis, podoplanin expression is induced in basal keratinocytes via the JAK-STAT pathway and contributes toward epidermal hyperproliferation. Podoplanin expression on keratinocytes can also promote IL-17 secretion from lymphocytes, promoting chronic inflammation. During wound healing, the podoplanin/CLEC-2 interaction between keratinocytes and platelets regulates re-epithelialization at the wound edge. In skin cancers, podoplanin expresses on tumor cells and promotes their migration and epithelial-mesenchymal transition, thereby accelerating invasion and metastasis. Podoplanin is also expressed in normal peritumoral cells, such as cancer-associated fibroblasts in melanoma and keratinocytes in extramammary Paget's disease, which promote tumor progression and predict aggressive behavior and poor prognosis. This review provides an overview of our current understanding of the mechanisms via which podoplanin mediates these pathological skin conditions.
Collapse
|
6
|
Hwang BO, Park SY, Cho ES, Zhang X, Lee SK, Ahn HJ, Chun KS, Chung WY, Song NY. Platelet CLEC2-Podoplanin Axis as a Promising Target for Oral Cancer Treatment. Front Immunol 2022; 12:807600. [PMID: 34987523 PMCID: PMC8721674 DOI: 10.3389/fimmu.2021.807600] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/26/2021] [Indexed: 12/21/2022] Open
Abstract
Cancer tissues are not just simple masses of malignant cells, but rather complex and heterogeneous collections of cellular and even non-cellular components, such as endothelial cells, stromal cells, immune cells, and collagens, referred to as tumor microenvironment (TME). These multiple players in the TME develop dynamic interactions with each other, which determines the characteristics of the tumor. Platelets are the smallest cells in the bloodstream and primarily regulate blood coagulation and hemostasis. Notably, cancer patients often show thrombocytosis, a status of an increased platelet number in the bloodstream, as well as the platelet infiltration into the tumor stroma, which contributes to cancer promotion and progression. Thus, platelets function as one of the important stromal components in the TME, emerging as a promising chemotherapeutic target. However, the use of traditional antiplatelet agents, such as aspirin, has limitations mainly due to increased bleeding complications. This requires to implement new strategies to target platelets for anti-cancer effects. In oral squamous cell carcinoma (OSCC) patients, both high platelet counts and low tumor-stromal ratio (high stroma) are strongly correlated with increased metastasis and poor prognosis. OSCC tends to invade adjacent tissues and bones and spread to the lymph nodes for distant metastasis, which is a huge hurdle for OSCC treatment in spite of relatively easy access for visual examination of precancerous lesions in the oral cavity. Therefore, locoregional control of the primary tumor is crucial for OSCC treatment. Similar to thrombocytosis, higher expression of podoplanin (PDPN) has been suggested as a predictive marker for higher frequency of lymph node metastasis of OSCC. Cumulative evidence supports that platelets can directly interact with PDPN-expressing cancer cells via C-type lectin-like receptor 2 (CLEC2), contributing to cancer cell invasion and metastasis. Thus, the platelet CLEC2-PDPN axis could be a pinpoint target to inhibit interaction between platelets and OSCC, avoiding undesirable side effects. Here, we will review the role of platelets in cancer, particularly focusing on CLEC2-PDPN interaction, and will assess their potentials as therapeutic targets for OSCC treatment.
Collapse
Affiliation(s)
- Byeong-Oh Hwang
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul, South Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Se-Young Park
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul, South Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Eunae Sandra Cho
- BK21 Four Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Oral Pathology, Yonsei University College of Dentistry, Seoul, South Korea.,Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea
| | - Xianglan Zhang
- Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Pathology, Yanbian University Hospital, Yanji City, China
| | - Sun Kyoung Lee
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Hyung-Joon Ahn
- Department of Orofacial Pain and Oral Medicine, Dental Hospital, Yonsei University College of Dentistry, Seoul, South Korea
| | - Kyung-Soo Chun
- College of Pharmacy, Keimyung University, Daegu, South Korea
| | - Won-Yoon Chung
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul, South Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea.,Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea
| | - Na-Young Song
- Department of Applied Life Science, The Graduate School, Yonsei University, Seoul, South Korea.,BK21 Four Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| |
Collapse
|
7
|
Kaneko MK, Ohishi T, Nakamura T, Inoue H, Takei J, Sano M, Asano T, Sayama Y, Hosono H, Suzuki H, Kawada M, Kato Y. Development of Core-Fucose-Deficient Humanized and Chimeric Anti-Human Podoplanin Antibodies. Monoclon Antib Immunodiagn Immunother 2021; 39:167-174. [PMID: 33085938 DOI: 10.1089/mab.2020.0019] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Podoplanin (PDPN), a 36-kDa type I transmembrane O-glycoprotein, is expressed in normal cells, including renal epithelial cells (podocytes), lymphatic endothelial cells, and pulmonary type I alveolar cells, and in cancer cells, including brain tumors and squamous cell lung carcinomas. PDPN activates platelet aggregation by binding to C-type lectin-like receptor-2 (CLEC-2) on platelets, and PDPN/CLEC-2 interaction facilitates blood/lymphatic vessel separation. We previously produced an anti-human PDPN monoclonal antibody (mAb), clone NZ-1 (rat IgG2a, lambda) and its rat-human chimeric mAbs (NZ-8/NZ-12), which neutralize PDPN/CLEC-2 interactions and inhibit platelet aggregation and cancer metastasis. In this study, we first developed a humanized anti-human PDPN mAb, named as NZ-27. We further produced a core-fucose-deficient version of NZ-27, named as P1027 and a core-fucose-deficient version of NZ-12, named as NZ-12f. We investigated the binding affinity, antibody-dependent cellular cytotoxicity (ADCC), complement-dependent cytotoxicity (CDC), and antitumor activity of P1027 and NZ-12f. We demonstrated that the binding affinities of P1027 and NZ-12f against LN319 (a human glioblastoma cell line) are 1.1 × 10-8 and 3.9 × 10-9 M, respectively. ADCC reporter assays demonstrated that NZ-12f shows 1.5 times higher luminescence than P1027. Furthermore, NZ-12f showed 2.2 times higher ADCC than P1027, whereas both P1027 and NZ-12f showed high CDC activities against LN319 cells. Using LN319 xenograft models, P1027 and NZ-12f significantly reduced tumor development in an LN319 xenograft model compared with control human IgG. Treatment with P1027 and NZ-12f may be a useful therapy for patients with PDPN-expressing cancers.
Collapse
Affiliation(s)
- Mika K Kaneko
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomokazu Ohishi
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation, Numazu-shi, Japan
| | - Takuro Nakamura
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Inoue
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation, Numazu-shi, Japan
| | - Junko Takei
- 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
| | - Teizo Asano
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yusuke Sayama
- 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
| | - Hiroyoshi Suzuki
- Department of Pathology and Laboratory Medicine, Sendai Medical Center, Sendai, Japan
| | - Manabu Kawada
- Institute of Microbial Chemistry (BIKAKEN), Numazu, Microbial Chemistry Research Foundation, Numazu-shi, 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
| |
Collapse
|
8
|
Interplay between Podoplanin, CD44s and CD44v in Squamous Carcinoma Cells. Cells 2020; 9:cells9102200. [PMID: 33003440 PMCID: PMC7601683 DOI: 10.3390/cells9102200] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/26/2020] [Accepted: 09/26/2020] [Indexed: 01/05/2023] Open
Abstract
Podoplanin and CD44 are transmembrane glycoproteins involved in inflammation and cancer. In this paper, we report that podoplanin is coordinately expressed with the CD44 standard (CD44s) and variant (CD44v) isoforms in vivo—in hyperplastic skin after a pro-inflammatory stimulus with 12-O-tetradecanoylphorbol-13-acetate (TPA)—and in vitro—in cell lines representative of different stages of mouse-skin chemical carcinogenesis, as well as in human squamous carcinoma cell (SCC) lines. Moreover, we identify CD44v10 in the mouse-skin carcinogenesis model as the only CD44 variant isoform expressed in highly aggressive spindle carcinoma cell lines together with CD44s and podoplanin. We also characterized CD44v3-10, CD44v6-10 and CD44v8-10 as the major variant isoforms co-expressed with CD44s and podoplanin in human SCC cell lines. Immunofluorescence confocal microscopy experiments show that these CD44v isoforms colocalize with podoplanin at plasma membrane protrusions and cell–cell contacts of SCC cells, as previously reported for CD44s. Furthermore, CD44v isoforms colocalize with podoplanin in chemically induced mouse-skin SCCs in vivo. Co-immunoprecipitation experiments indicate that podoplanin physically binds to CD44v3-10, CD44v6-10 and CD44v8-10 isoforms, as well as to CD44s. Podoplanin–CD44 interaction is mediated by the transmembrane and cytosolic regions and is negatively modulated by glycosylation of the extracellular domain. These results point to a functional interplay of podoplanin with both CD44v and CD44s isoforms in SCCs and give insight into the regulation of the podoplanin–CD44 association.
Collapse
|
9
|
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.
Collapse
|
10
|
Nitric oxide and interactions with reactive oxygen species in the development of melanoma, breast, and colon cancer: A redox signaling perspective. Nitric Oxide 2019; 89:1-13. [DOI: 10.1016/j.niox.2019.04.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022]
|
11
|
Xu M, Wang X, Pan Y, Zhao X, Yan B, Ruan C, Xia L, Zhao Y. Blocking podoplanin suppresses growth and pulmonary metastasis of human malignant melanoma. BMC Cancer 2019; 19:599. [PMID: 31208371 PMCID: PMC6580467 DOI: 10.1186/s12885-019-5808-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 06/06/2019] [Indexed: 11/29/2022] Open
Abstract
Background Podoplanin (PDPN), a transmembrane O-glycoprotein, is up-regulated in many tumors and is involved in tumor metastasis and malignant progression. In previous studies, we generated a functional blocking monoclonal antibody (mAb, SZ168) against the extracellular domain of human PDPN. This study is aimed to investigate whether blocking PDPN by SZ168 inhibits tumor growth and metastasis. Methods Malignant melanoma xenograft model by inoculating subcutaneously human malignant melanoma cell line C8161 into the back of BALB/c nude mice was used. Endogenous PDPN expression in C8161 cells and nasopharyngeal cancer cell line CNE-2 was detected using western blot and flow cytometry. Results SZ168 significantly inhibited C8161 or CNE-2 cell-induced platelet aggregation in a dose-dependent manner with a maximal inhibition of 73.9 ± 3.0% in C8161 cells or 77.1 ± 2.7% in CNE-2 cells. Moreover, SZ168 inhibited the growth and pulmonary metastasis of C8161cells in vivo. The number of lung metastatic foci in the SZ168-treated group was significantly decreased compared with that in the control mouse IgG group (1.61 ± 0.44 vs.3.83 ± 0.60, P < 0.01). Subcutaneous tumor volume, weight, and incidence were also significantly reduced in the SZ168-treated group compared to the control group (P < 0.05). Additionally, SZ168 recognized PDPN in immunohistochemical analyses of tumor tissue sections. Conclusions SZ168 blocks growth and pulmonary metastasis of human malignant melanoma by inhibiting the interaction between tumor PDPN and platelet CLEC-2 and therefore is a promising antibody for therapeutic development against malignant melanoma.
Collapse
Affiliation(s)
- Mengqiao Xu
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Xia Wang
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215006, Jiangsu, China
| | | | - Xingpeng Zhao
- Clinical Laboratory Center, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, 471000, Henan, China
| | - Bin Yan
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Changgeng Ruan
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Lijun Xia
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China.,State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Yiming Zhao
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China. .,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China.
| |
Collapse
|
12
|
Kasinath V, Yilmam OA, Uehara M, Yonar M, Jiang L, Li X, Qiu W, Eskandari S, Ichimura T, Abdi R. Urine podoplanin heralds the onset of ischemia-reperfusion injury of the kidney. Am J Physiol Renal Physiol 2019; 316:F957-F965. [PMID: 30864839 DOI: 10.1152/ajprenal.00538.2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Ischemia-reperfusion injury represents one of the most common causes of acute kidney injury, a serious and often deadly condition that affects up to 20% of all hospitalized patients in the United States. However, the current standard assay used universally for the diagnosis of acute kidney injury, serum creatinine, does not detect renal damage early in its course. Serendipitously, we found that the immunofluorescent signal of the constitutive podocyte marker podoplanin fades in the glomerulus and intensifies in the tubulointerstitial compartment of the kidney shortly after ischemia-reperfusion injury in 8- to 10-wk-old male C57Bl/6j mice. Therefore, we sought to define the appearance and course of the podoplanin-positive signal in the kidney after ischemia-reperfusion injury. The tubulointerstitial podoplanin-positive signal increased as early as 2 h but persisted for 7 days after ischemia-reperfusion injury. In addition, the strength of this tubulointerstitial signal was directly proportional to the severity of ischemia, and its location shifted from the tubules to interstitial cells over time. Finally, we detected podoplanin in the urine of mice after ischemia, and we observed that an increase in the urine podoplanin-to-creatinine ratio correlated strongly with the onset of renal ischemia-reperfusion injury. Our findings indicate that the measurement of urine podoplanin harbors promising potential for use as a novel biomarker for the early detection of ischemia-reperfusion injury of the kidney.
Collapse
Affiliation(s)
- Vivek Kasinath
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts.,Division of Renal Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| | - Osman Arif Yilmam
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts
| | - Mayuko Uehara
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts.,Division of Renal Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| | - Merve Yonar
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts
| | - Liwei Jiang
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts
| | - Xiaofei Li
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts
| | - Weiliang Qiu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| | - Siawosh Eskandari
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts
| | - Takaharu Ichimura
- Division of Renal Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| | - Reza Abdi
- Transplantation Research Center, Brigham and Women's Hospital , Boston, Massachusetts.,Division of Renal Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| |
Collapse
|
13
|
Podoplanin in Inflammation and Cancer. Int J Mol Sci 2019; 20:ijms20030707. [PMID: 30736372 PMCID: PMC6386838 DOI: 10.3390/ijms20030707] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [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.
Collapse
|
14
|
Alameda JP, Navarro M, Ramírez Á, Page A, Suárez-Cabrera C, Moreno-Maldonado R, Paramio JM, del Carmen Fariña M, Del Río M, Fernández-Aceñero MJ, Bravo A, de Los Llanos Casanova M. IKKα regulates the stratification and differentiation of the epidermis: implications for skin cancer development. Oncotarget 2018; 7:76779-76792. [PMID: 28881859 PMCID: PMC5363549 DOI: 10.18632/oncotarget.12527] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 09/29/2016] [Indexed: 11/25/2022] Open
Abstract
IKKα plays a mandatory role in keratinocyte differentiation and exerts an important task in non-melanoma skin cancer development. However, it is not fully understood how IKKα exerts these functions. To analyze in detail the role of IKKα in epidermal stratification and differentiation, we have generated tridimensional (3D) cultures of human HaCaT keratinocytes and fibroblasts in fibrin gels, obtaining human skin equivalents that comprise an epidermal and a dermal compartments that resembles both the structure and differentiation of normal human skin. We have found that IKKα expression must be strictly regulated in epidermis, as alterations in its levels lead to histological defects and promote the development of malignant features. Specifically, we have found that the augmented expression of IKKα results in increased proliferation and clonogenicity of human keratinocytes, and leads to an accelerated and altered differentiation, augmented ability of invasive growth, induction of the expression of oncogenic proteins (Podoplanin, Snail, Cyclin D1) and increased extracellular matrix proteolytic activity. All these characteristics make keratinocytes overexpressing IKKα to be at a higher risk of developing skin cancer. Comparison of genetic profile obtained by analysis of microarrays of RNA of skin equivalents from both genotypes supports the above described findings.
Collapse
Affiliation(s)
- Josefa P Alameda
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | - Manuel Navarro
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | - Ángel Ramírez
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | - Angustias Page
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | - Cristian Suárez-Cabrera
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | | | - Jesús M Paramio
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| | | | - Marcela Del Río
- Epithelial Biomedicine Division, CIEMAT-CIBERER (U714), Madrid, Spain.,Department of Bioengineering, Carlos III University (UC3M), Leganés, Madrid, Spain.,Cátedra Fundación Jiménez Díaz (IIS-FJD) of Regenerative Medicine and Tissue Bioengineer, Madrid, Spain
| | | | - Ana Bravo
- Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, University of Santiago de Compostela, Lugo, Spain
| | - María de Los Llanos Casanova
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.,Molecular Oncology, Institute of Biomedical Investigation University Hospital "12 de Octubre", Madrid, Spain
| |
Collapse
|
15
|
Carrasco-Ramírez P, Greening DW, Andrés G, Gopal SK, Martín-Villar E, Renart J, Simpson RJ, Quintanilla M. Podoplanin is a component of extracellular vesicles that reprograms cell-derived exosomal proteins and modulates lymphatic vessel formation. Oncotarget 2017; 7:16070-89. [PMID: 26893367 PMCID: PMC4941298 DOI: 10.18632/oncotarget.7445] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 02/10/2016] [Indexed: 12/16/2022] Open
Abstract
Podoplanin (PDPN) is a transmembrane glycoprotein that plays crucial roles in embryonic development, the immune response, and malignant progression. Here, we report that cells ectopically or endogenously expressing PDPN release extracellular vesicles (EVs) that contain PDPN mRNA and protein. PDPN incorporates into membrane shed microvesicles (MVs) and endosomal-derived exosomes (EXOs), where it was found to colocalize with the canonical EV marker CD63 by immunoelectron microscopy. We have previously found that expression of PDPN in MDCK cells induces an epithelial-mesenchymal transition (EMT). Proteomic profiling of MDCK-PDPN cells compared to control cells shows that PDPN-induced EMT is associated with upregulation of oncogenic proteins and diminished expression of tumor suppressors. Proteomic analysis of exosomes reveals that MDCK-PDPN EXOs were enriched in protein cargos involved in cell adhesion, cytoskeletal remodeling, signal transduction and, importantly, intracellular trafficking and EV biogenesis. Indeed, expression of PDPN in MDCK cells stimulated both EXO and MV production, while knockdown of endogenous PDPN in human HN5 squamous carcinoma cells reduced EXO production and inhibited tumorigenesis. EXOs released from MDCK-PDPN and control cells both stimulated in vitro angiogenesis, but only EXOs containing PDPN were shown to promote lymphatic vessel formation. This effect was mediated by PDPN on the surface of EXOs, as demonstrated by a neutralizing specific monoclonal antibody. These results contribute to our understanding of PDPN-induced EMT in association to tumor progression, and suggest an important role for PDPN in EV biogenesis and/or release and for PDPN-EXOs in modulating lymphangiogenesis.
Collapse
Affiliation(s)
- Patricia Carrasco-Ramírez
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - David W Greening
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Germán Andrés
- Electron Microscopy Unit, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Shashi K Gopal
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Ester Martín-Villar
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Jaime Renart
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Richard J Simpson
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Miguel Quintanilla
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Autónoma de Madrid (UAM), Madrid, Spain
| |
Collapse
|
16
|
Suchanski J, Tejchman A, Zacharski M, Piotrowska A, Grzegrzolka J, Chodaczek G, Nowinska K, Rys J, Dziegiel P, Kieda C, Ugorski M. Podoplanin increases the migration of human fibroblasts and affects the endothelial cell network formation: A possible role for cancer-associated fibroblasts in breast cancer progression. PLoS One 2017; 12:e0184970. [PMID: 28938000 PMCID: PMC5609749 DOI: 10.1371/journal.pone.0184970] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 09/05/2017] [Indexed: 01/26/2023] Open
Abstract
In our previous studies we showed that in breast cancer podoplanin-positive cancer-associated fibroblasts correlated positively with tumor size, grade of malignancy, lymph node metastasis, lymphovascular invasion and poor patients’ outcome. Therefore, the present study was undertaken to assess if podoplanin expressed by fibroblasts can affect malignancy-associated properties of breast cancer cells. Human fibroblastic cell lines (MSU1.1 and Hs 578Bst) overexpressing podoplanin and control fibroblasts were co-cultured with breast cancer MDA-MB-231 and MCF7 cells and the impact of podoplanin expressed by fibroblasts on migration and invasiveness of breast cancer cells were studied in vitro. Migratory and invasive properties of breast cancer cells were not affected by the presence of podoplanin on the surface of fibroblasts. However, ectopic expression of podoplanin highly increases the migration of MSU1.1 and Hs 578Bst fibroblasts. The present study also revealed for the first time, that podoplanin expression affects the formation of pseudo tubes by endothelial cells. When human HSkMEC cells were co-cultured with podoplanin-rich fibroblasts the endothelial cell capillary-like network was characterized by significantly lower numbers of nodes and meshes than in co-cultures of endothelial cells with podoplanin-negative fibroblasts. The question remains as to how our experimental data can be correlated with previous clinical data showing an association between the presence of podoplanin-positive cancer-associated fibroblasts and progression of breast cancer. Therefore, we propose that expression of podoplanin by fibroblasts facilitates their movement into the tumor stroma, which creates a favorable microenvironment for tumor progression by increasing the number of cancer-associated fibroblasts, which produce numerous factors affecting proliferation, survival and invasion of cancer cells. In accordance with this, the present study revealed for the first time, that such podoplanin-mediated effects can affect tube formation by endothelial cells and participate in their pathological properties in the tumor context. Our experimental data were supported by clinical studies. First, when IDC and DCIS were analyzed by immunohistochemistry according to the presence of podoplanin-expressing cells, the numbers of cancer-associated fibroblasts with high expression of this glycoprotein were significantly higher in IDC than in DCIS cases. Second, using immunofluorescence, the co-localization of PDPN-positive CAFs with blood vessels stained with antibody directed against CD34 was observed in tumor stroma of IDC samples.
Collapse
Affiliation(s)
- Jaroslaw Suchanski
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Anna Tejchman
- Laboratory of Glycobiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland.,Centre for Molecular Biophysics, Cell Recognition and Glycobiology, UPR4301-CNRS, Orléans, France
| | - Maciej Zacharski
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | | | - Jedrzej Grzegrzolka
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | | | - Katarzyna Nowinska
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Janusz Rys
- Department of Tumor Pathology, Centre of Oncology, Maria Sklodowska-Curie Memorial Institute Cracow Branch, Cracow, Poland
| | - Piotr Dziegiel
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland.,Department of Physiotherapy, Wroclaw University School of Physical Education, Wroclaw, Poland
| | - Claudine Kieda
- Centre for Molecular Biophysics, Cell Recognition and Glycobiology, UPR4301-CNRS, Orléans, France.,Military Medical Institute, Warsaw, Poland
| | - Maciej Ugorski
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland.,Laboratory of Glycobiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| |
Collapse
|
17
|
Kaneko MK, Abe S, Ogasawara S, Fujii Y, Yamada S, Murata T, Uchida H, Tahara H, Nishioka Y, Kato Y. Chimeric Anti-Human Podoplanin Antibody NZ-12 of Lambda Light Chain Exerts Higher Antibody-Dependent Cellular Cytotoxicity and Complement-Dependent Cytotoxicity Compared with NZ-8 of Kappa Light Chain. Monoclon Antib Immunodiagn Immunother 2017; 36:25-29. [DOI: 10.1089/mab.2016.0047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mika K. Kaneko
- Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shinji Abe
- Department of Clinical Pharmacy Practice Pedagogy, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
- Department of Respiratory Medicine and Rheumatology, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Satoshi Ogasawara
- Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, Japan
- Molecular Chirality Research Center, Chiba University, Chiba, Japan
| | - Yuki Fujii
- Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shinji Yamada
- Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Murata
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, Japan
- Molecular Chirality Research Center, Chiba University, Chiba, Japan
| | - Hiroaki Uchida
- Division of Bioengineering, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hideaki Tahara
- Division of Bioengineering, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasuhiko Nishioka
- Department of Respiratory Medicine and Rheumatology, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Yukinari Kato
- Tohoku University Graduate School of Medicine, Sendai, Japan
| |
Collapse
|
18
|
Alvares K, Ren Y, Feng JQ, Veis A. Expression of the invertebrate sea urchin P16 protein into mammalian MC3T3 osteoblasts transforms and reprograms them into "osteocyte-like" cells. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2015; 326:38-46. [PMID: 26581835 DOI: 10.1002/jez.b.22663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 10/31/2015] [Indexed: 11/11/2022]
Abstract
P16 is an acidic phosphoprotein important in both sea urchin embryonic spicule development and transient mineralization during embryogenesis, syncytium formation, and mineralization in mature urchin tooth. Anti-P16 has been used to localize P16 to the syncytial membranes and the calcite mineral. Specific amino acid sequence motifs in P16 are similar to sequences in DSPP, a protein common to all vertebrate teeth, and crucial for their mineralization. Here, we examine the effect of P16 on vertebrate fibroblastic NIH3T3 cells and osteoblastic MC3T3 cells. Transfection of NIH3T3 cells with P16 cDNA resulted in profound changes in the morphology of the cells. In culture, the transfected cells sent out long processes that contacted processes from neighboring cells forming networks or syncytia. There was a similar change in morphology in cultured osteoblastic MC3T3 cells. In addition, the MC3T3 developed numerous dendrites as found in osteocytes. Importantly, there was also a change in the expression of the osteoblast and osteocyte specific genes. MC3T3 cells transfected with P16 showed an 18-fold increase in expression of the osteocyte specific Dentin matrix protein (DMP1) gene, accompanied by decreased expression of osteoblast specific genes: Bone sialoprotein (BSP), osteocalcin (OCN), and β-catenin decreased by 70%, 64%, and 68 %, respectively. Thus, invertebrate urchin P16 with no previously known analog in vertebrates was able to induce changes in both cell morphology and gene expression, converting vertebrate-derived osteoblast-like precursor cells to an "osteocyte-like" phenotype, an important process in bone biology. The mechanisms involved are presently under study.
Collapse
Affiliation(s)
- Keith Alvares
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Yinshi Ren
- Department of Biomedical Sciences, Baylor College of Dentistry, Dallas, Texas
| | - Jian Q Feng
- Department of Biomedical Sciences, Baylor College of Dentistry, Dallas, Texas
| | - Arthur Veis
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| |
Collapse
|
19
|
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: 50] [Impact Index Per Article: 5.6] [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.
Collapse
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
| |
Collapse
|
20
|
Larcher F, Espada J, Díaz-Ley B, Jaén P, Juarranz A, Quintanilla M. New Experimental Models of Skin Homeostasis and Diseases. ACTAS DERMO-SIFILIOGRAFICAS 2015. [DOI: 10.1016/j.adengl.2014.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
21
|
Podoplanin: a novel regulator of tumor invasion and metastasis. Med Oncol 2014; 31:24. [PMID: 25142945 DOI: 10.1007/s12032-014-0024-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 05/05/2014] [Indexed: 12/17/2022]
Abstract
Podoplanin, a small mucin-type sialoglycoprotein, was recently shown to be involved in tumor progression. Podoplanin is overexpressed in cancer cells of various human malignancies, and recently, it is also detected in intratumoral stromal cells. We now appreciate that podoplanin plays a dual role in cancer: it can not only suppress tumor growth but also promote tumor progression. Researchers have identified several potential pathways invoked by podoplanin, which participate in the epithelial-to-mesenchymal transition, collective-cell migration, platelet activation and aggregation, and lymphangiogenesis, and thus regulate the tumor invasion and metastasis. Here, we discuss the current experimental and human clinical data on podoplanin to validate the multiple context-dependent functions in different microenvironments and to delineate the diverse regulatory mechanisms.
Collapse
|
22
|
Larcher F, Espada J, Díaz-Ley B, Jaén P, Juarranz A, Quintanilla M. New experimental models of skin homeostasis and diseases. ACTAS DERMO-SIFILIOGRAFICAS 2014; 106:17-28. [PMID: 24878038 DOI: 10.1016/j.ad.2014.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 02/25/2014] [Accepted: 03/03/2014] [Indexed: 12/19/2022] Open
Abstract
Homeostasis, whose regulation at the molecular level is still poorly understood, is intimately related to the functions of epidermal stem cells. Five research groups have been brought together to work on new in vitro and in vivo skin models through the SkinModel-CM program, under the auspices of the Spanish Autonomous Community of Madrid. This project aims to analyze the functions of DNA methyltransferase 1, endoglin, and podoplanin in epidermal stem cell activity, homeostasis, and skin cancer. These new models include 3-dimensional organotypic cultures, immunodeficient skin-humanized mice, and genetically modified mice. Another aim of the program is to use skin-humanized mice to model dermatoses such as Gorlin syndrome and xeroderma pigmentosum in order to optimize new protocols for photodynamic therapy.
Collapse
Affiliation(s)
- F Larcher
- Unidad de Medicina Regenerativa, Departamento de Investigación Básica, División de Biomedicina Epitelial, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT) y Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, España
| | - J Espada
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), Madrid, España; Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)-UAM, Madrid, España
| | - B Díaz-Ley
- Unidad de Dermatología, Hospital Ramón y Cajal, Madrid, España
| | - P Jaén
- Unidad de Dermatología, Hospital Ramón y Cajal, Madrid, España
| | - A Juarranz
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), Madrid, España.
| | - M Quintanilla
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)-UAM, Madrid, España
| |
Collapse
|
23
|
Rudzińska M, Gaweł D, Sikorska J, Karpińska KM, Kiedrowski M, Stępień T, Marchlewska M, Czarnocka B. The role of podoplanin in the biology of differentiated thyroid cancers. PLoS One 2014; 9:e96541. [PMID: 24797369 PMCID: PMC4010536 DOI: 10.1371/journal.pone.0096541] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/09/2014] [Indexed: 01/04/2023] Open
Abstract
Podoplanin (PDPN), a mucin-type transmembrane glycoprotein specific to the lymphatic system is expressed in a variety of human cancers, and is regarded as a factor promoting tumor progression. The purpose of this study was to elucidate the molecular role of PDPN in the biology of thyroid cancer cells. PDPN expression was evaluated in primary thyroid carcinomas and thyroid carcinoma cell lines by RT-qPCR, Western blotting, IF and IHC. To examine the role of podoplanin in determining a cell's malignant potential (cellular migration, invasion, proliferation, adhesion, motility, apoptosis), a thyroid cancer cell line with silenced PDPN expression was used. We observed that PDPN was solely expressed in the cancer cells of 40% of papillary thyroid carcinoma (PTC) tissues. Moreover, PDPN mRNA and protein were highly expressed in PTC-derived TPC1 and BcPAP cell lines but were not detected in follicular thyroid cancer derived cell lines. PDPN knock-down significantly decreased cellular invasion, and modestly reduced cell migration, while proliferation and adhesion were not affected. Our results demonstrate that PDPN mediates the invasive properties of cells derived from papillary thyroid carcinomas, suggesting that podoplanin might promote PTC progression.
Collapse
Affiliation(s)
- Magdalena Rudzińska
- Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
| | - Damian Gaweł
- Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
| | - Justyna Sikorska
- Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
| | - Kamila M. Karpińska
- Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
| | - Mirosław Kiedrowski
- Department of Pathology, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Tomasz Stępień
- Department of General and Endocrinological Surgery, Copernicus Memorial Hospital, Łódź, Poland
| | - Magdalena Marchlewska
- Department of General and Endocrinological Surgery, Copernicus Memorial Hospital, Łódź, Poland
| | - Barbara Czarnocka
- Department of Biochemistry and Molecular Biology, Center of Postgraduate Medical Education, Warsaw, Poland
- * E-mail:
| |
Collapse
|
24
|
Lips KS, Kauschke V, Hartmann S, Thormann U, Ray S, Kampschulte M, Langheinrich A, Schumacher M, Gelinsky M, Heinemann S, Hanke T, Kautz AR, Schnabelrauch M, Schnettler R, Heiss C, Alt V, Kilian O. Podoplanin immunopositive lymphatic vessels at the implant interface in a rat model of osteoporotic fractures. PLoS One 2013; 8:e77259. [PMID: 24130867 PMCID: PMC3793947 DOI: 10.1371/journal.pone.0077259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 08/31/2013] [Indexed: 12/26/2022] Open
Abstract
Insertion of bone substitution materials accelerates healing of osteoporotic fractures. Biodegradable materials are preferred for application in osteoporotic patients to avoid a second surgery for implant replacement. Degraded implant fragments are often absorbed by macrophages that are removed from the fracture side via passage through veins or lymphatic vessels. We investigated if lymphatic vessels occur in osteoporotic bone defects and whether they are regulated by the use of different materials. To address this issue osteoporosis was induced in rats using the classical method of bilateral ovariectomy and additional calcium and vitamin deficient diet. In addition, wedge-shaped defects of 3, 4, or 5 mm were generated in the distal metaphyseal area of femur via osteotomy. The 4 mm defects were subsequently used for implantation studies where bone substitution materials of calcium phosphate cement, composites of collagen and silica, and iron foams with interconnecting pores were inserted. Different materials were partly additionally functionalized by strontium or bisphosphonate whose positive effects in osteoporosis treatment are well known. The lymphatic vessels were identified by immunohistochemistry using an antibody against podoplanin. Podoplanin immunopositive lymphatic vessels were detected in the granulation tissue filling the fracture gap, surrounding the implant and growing into the iron foam through its interconnected pores. Significant more lymphatic capillaries were counted at the implant interface of composite, strontium and bisphosphonate functionalized iron foam. A significant increase was also observed in the number of lymphatics situated in the pores of strontium coated iron foam. In conclusion, our results indicate the occurrence of lymphatic vessels in osteoporotic bone. Our results show that lymphatic vessels are localized at the implant interface and in the fracture gap where they might be involved in the removal of lymphocytes, macrophages, debris and the implants degradation products. Therefore the lymphatic vessels are involved in implant integration and fracture healing.
Collapse
Affiliation(s)
- Katrin Susanne Lips
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
- * E-mail:
| | - Vivien Kauschke
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
| | - Sonja Hartmann
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
| | - Ulrich Thormann
- Department of Trauma Surgery Gießen, University Hospital of Gießen, Marburg, Justus-Liebig University, Gießen, Germany
| | - Seemun Ray
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
| | | | - Alexander Langheinrich
- Department of Diagnostic and Interventional Radiology, BG Trauma Hospital, Frankfurt/Main, Germany
| | - Matthias Schumacher
- Centre for Translational Bone, Joint, and Soft Tissue Research, Medical Faculty and University Hospital, Technische Universität, Dresden, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint, and Soft Tissue Research, Medical Faculty and University Hospital, Technische Universität, Dresden, Germany
| | - Sascha Heinemann
- Max-Bergmann-Center of Biomaterials and Institute of Material Science, Technische Universität, Dresden, Germany
| | - Thomas Hanke
- Max-Bergmann-Center of Biomaterials and Institute of Material Science, Technische Universität, Dresden, Germany
| | | | | | - Reinhard Schnettler
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
- Department of Trauma Surgery Gießen, University Hospital of Gießen, Marburg, Justus-Liebig University, Gießen, Germany
| | - Christian Heiss
- Department of Trauma Surgery Gießen, University Hospital of Gießen, Marburg, Justus-Liebig University, Gießen, Germany
| | - Volker Alt
- Department of Trauma Surgery Gießen, University Hospital of Gießen, Marburg, Justus-Liebig University, Gießen, Germany
| | - Olaf Kilian
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University, Gießen, Germany
- Department of Orthopedics and Trauma, Zentralklinik, Bad Berka, Germany
| |
Collapse
|
25
|
Ebp1 activates podoplanin expression and contributes to oral tumorigenesis. Oncogene 2013; 33:3839-50. [DOI: 10.1038/onc.2013.354] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 06/18/2013] [Accepted: 07/15/2013] [Indexed: 12/15/2022]
|
26
|
Pula B, Witkiewicz W, Dziegiel P, Podhorska-Okolow M. Significance of podoplanin expression in cancer-associated fibroblasts: a comprehensive review. Int J Oncol 2013; 42:1849-57. [PMID: 23588876 DOI: 10.3892/ijo.2013.1887] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 03/14/2013] [Indexed: 11/05/2022] Open
Abstract
Cancer-associated fibroblasts (CAFs) are well-known to be part of the tumor microenvironment. This heterogeneous population of cells of the tumor microenvironment via secretion of various growth factors and cytokines was shown to contribute to increased cancer cell proliferation rate, migration, invasiveness and other key processes such as angiogenesis and lymphangiogenesis. Recent studies identified podoplanin as a marker of CAFs in various malignancies and its expression in these cells was shown to influence cancer progression. In some studies it yielded a prognostic impact on patient survival which was strongly dependent on the entity of the tumor. This review summarizes recent findings concerning the biology of podoplanin in cancer progression with particular emphasis on its expression in CAFs.
Collapse
Affiliation(s)
- Bartosz Pula
- Regional Specialist Hospital, Research and Development Center, 51-124 Wroclaw, Poland
| | | | | | | |
Collapse
|
27
|
Lowe KL, Navarro-Nunez L, Watson SP. Platelet CLEC-2 and podoplanin in cancer metastasis. Thromb Res 2012; 129 Suppl 1:S30-7. [PMID: 22682130 DOI: 10.1016/s0049-3848(12)70013-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
It has long been recognised that the function of platelets in health and disease span far beyond their roles in haemostasis and thrombosis. The observation that tumour cells induce platelet aggregation was followed by extensive experimental evidence linking platelets to cancer progression. Aggregated platelets coat tumour cells during their transit through the bloodstream and mediate adherence to vascular endothelium, protection from shear stresses, evasion from immune molecules, and release of an array of bioactive molecules that facilitate tumour cell extravasation and growth at metastatic sites. The sialyated membrane glycoprotein podoplanin is found on the leading edge of tumour cells and is thought to influence their migratory and invasive properties. Podoplanin elicits powerful platelet aggregation and is the endogenous ligand for the platelet C-type lectin receptor, CLEC-2, which itself regulates podoplanin signalling. Here, the bidirectional relationship between CLEC-2 and podoplanin is described and considered in the context of tumour growth and metastasis.
Collapse
Affiliation(s)
- Kate L Lowe
- Centre for Cardiovascular Sciences, Institute for Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
| | | | | |
Collapse
|
28
|
Kaneko MK, Kunita A, Abe S, Tsujimoto Y, Fukayama M, Goto K, Sawa Y, Nishioka Y, Kato Y. Chimeric anti-podoplanin antibody suppresses tumor metastasis through neutralization and antibody-dependent cellular cytotoxicity. Cancer Sci 2012; 103:1913-9. [PMID: 22816430 DOI: 10.1111/j.1349-7006.2012.02385.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 07/09/2012] [Accepted: 07/16/2012] [Indexed: 11/30/2022] Open
Abstract
Podoplanin is a platelet aggregation-inducing factor associated with tumor metastasis, malignant progression, and cancer stem cells. We produced a rat-human chimeric anti-podoplanin mAb, NZ-8, from rat anti-podoplanin mAb (NZ-1). Although both NZ-1 and NZ-8 possess high binding affinities and high neutralizing activities of platelet aggregation, the antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity of NZ-8 were much higher than NZ-1. Furthermore, both NZ-1 and NZ-8 inhibited the growth of podoplanin-expressing tumors in vivo. Both NZ-1 and NZ-8 also suppressed hematogenous metastasis of podoplanin-expressing tumors. These results suggest that anti-podoplanin mAbs suppressed hematogenous metastasis by both neutralization and antibody-dependent cellular cytotoxicity/complement-dependent cytotoxicity activities. Targeting therapy to podoplanin-expressing tumors should be useful as a novel immunotherapy.
Collapse
Affiliation(s)
- Mika Kato Kaneko
- Molecular Tumor Marker Research Team, Global COE Program, Yamagata University Faculty of Medicine, Yamagata, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Ito M, Ishii G, Nagai K, Maeda R, Nakano Y, Ochiai A. Prognostic Impact of Cancer-Associated Stromal Cells in Patients With Stage I Lung Adenocarcinoma. Chest 2012; 142:151-158. [DOI: 10.1378/chest.11-2458] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
30
|
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.
Collapse
Affiliation(s)
- Masaru Honma
- Department of Dermatology, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Japan.
| | | | | | | |
Collapse
|
31
|
The transmembrane domain of podoplanin is required for its association with lipid rafts and the induction of epithelial-mesenchymal transition. Int J Biochem Cell Biol 2011; 43:886-96. [DOI: 10.1016/j.biocel.2011.02.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 02/18/2011] [Accepted: 02/24/2011] [Indexed: 11/18/2022]
|
32
|
Martín-Villar E, Fernández-Muñoz B, Parsons M, Yurrita MM, Megías D, Pérez-Gómez E, Jones GE, Quintanilla M. Podoplanin associates with CD44 to promote directional cell migration. Mol Biol Cell 2010; 21:4387-99. [PMID: 20962267 PMCID: PMC3002391 DOI: 10.1091/mbc.e10-06-0489] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Podoplanin, a cancer-associated glycoprotein, interacts with CD44. Both glycoproteins are coordinately upregulated during tumor progression. Podoplanin–CD44 interaction in the cell membrane occurs mainly in migrating cells, and it seems to be required for podoplanin-mediated cell migration and directionality. Podoplanin is a transmembrane glycoprotein up-regulated in different human tumors, especially those derived from squamous stratified epithelia (SCCs). Its expression in tumor cells is linked to increased cell migration and invasiveness; however, the mechanisms underlying this process remain poorly understood. Here we report that CD44, the major hyaluronan (HA) receptor, is a novel partner for podoplanin. Expression of the CD44 standard isoform (CD44s) is coordinately up-regulated together with that of podoplanin during progression to highly aggressive SCCs in a mouse skin model of carcinogenesis, and during epithelial-mesenchymal transition (EMT). In carcinoma cells, CD44 and podoplanin colocalize at cell surface protrusions. Moreover, CD44 recruitment promoted by HA-coated beads or cross-linking with a specific CD44 antibody induced corecruitment of podoplanin. Podoplanin–CD44s interaction was demonstrated both by coimmunoprecipitation experiments and, in vivo, by fluorescence resonance energy transfer/fluorescence lifetime imaging microscopy (FRET/FLIM), the later confirming its association on the plasma membrane of cells with a migratory phenotype. Importantly, we also show that podoplanin promotes directional persistence of motility in epithelial cells, a feature that requires CD44, and that both molecules cooperate to promote directional migration in SCC cells. Our results support a role for CD44-podoplanin interaction in driving tumor cell migration during malignancy.
Collapse
Affiliation(s)
- Ester Martín-Villar
- Randall Division of Cell and Molecular Biophysics, King's College London, Guy's Campus, SE1UL, UK.
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Cueni LN, Hegyi I, Shin JW, Albinger-Hegyi A, Gruber S, Kunstfeld R, Moch H, Detmar M. Tumor lymphangiogenesis and metastasis to lymph nodes induced by cancer cell expression of podoplanin. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:1004-16. [PMID: 20616339 DOI: 10.2353/ajpath.2010.090703] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The membrane glycoprotein podoplanin is expressed by several types of human cancers and might be associated with their malignant progression. Its exact biological function and molecular targets are unclear, however. Here, we assessed the relevance of tumor cell expression of podoplanin in cancer metastasis to lymph nodes, using a human MCF7 breast carcinoma xenograft model. We found that podoplanin expression promoted tumor cell motility in vitro and, unexpectedly, increased tumor lymphangiogenesis and metastasis to regional lymph nodes in vivo, without promoting primary tumor growth. Importantly, high cancer cell expression levels of podoplanin correlated with lymph node metastasis and reduced survival times in a large cohort of 252 oral squamous cell carcinoma patients. Based on comparative transcriptional profiling of tumor xenografts, we identified endothelin-1, villin-1, and tenascin-C as potential mediators of podoplanin-induced tumor lymphangiogenesis and metastasis. These unexpected findings identify a novel mechanism of tumor lymphangiogenesis and metastasis induced by cancer cell expression of podoplanin, suggesting that reagents designed to interfere with podoplanin function might be developed as therapeutics for patients with advanced cancer.
Collapse
Affiliation(s)
- Leah N Cueni
- Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology, ETH Zurich, Zurich, Switzerland
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Martín-Villar E, Yurrita MM, Fernández-Muñoz B, Quintanilla M, Renart J. Regulation of podoplanin/PA2.26 antigen expression in tumour cells. Involvement of calpain-mediated proteolysis. Int J Biochem Cell Biol 2008; 41:1421-9. [PMID: 19146981 DOI: 10.1016/j.biocel.2008.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 12/05/2008] [Accepted: 12/14/2008] [Indexed: 01/20/2023]
Abstract
Podoplanin/PA2.26 antigen is a small transmembrane mucin expressed in different types of cancer where it is associated with increased cell migration, invasiveness and metastasis. Little is known about the mechanisms that control podoplanin expression. Here, we show that podoplanin synthesis can be controlled at different levels. We analyzed podoplanin expression in a wide panel of tumour cell lines. The podoplanin gene (PDPN) is transcribed in cells derived from sarcomas, embryonal carcinomas, squamous cell carcinomas and endometrial tumours, while cell lines derived from colon, pancreatic, ovarian and ductal breast carcinomas do not express PDPN transcripts. PDPN is expressed as two mRNAs of approximately 2.7 and approximately 0.9 kb, both of which contain the coding sequence and arise by alternative polyadenylation. Strikingly, in most of the cell lines where PDPN transcripts were found, no podoplanin or only very low levels of the protein could be detected in Western blot. Treatment of several of these cell lines with the calpain inhibitor calpeptin resulted in podoplanin accumulation, whereas lactacystin, a specific inhibitor of the proteasome, had no effect. In vitro experiments showed that podoplanin is a substrate of calpain-1. These results indicate that at least in some tumour cells absence or reduced podoplanin protein levels are due to post-translational calpain-mediated proteolysis. We also report in this article the identification of a novel podoplanin isoform that originates by alternative splicing and differs from the standard form in lacking two cytoplasmic residues (YS). YS dipeptide is highly conserved across species, suggesting that it might be functionally relevant.
Collapse
Affiliation(s)
- Ester Martín-Villar
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM. Arturo Duperier, 4, 28029-Madrid, Spain
| | | | | | | | | |
Collapse
|
35
|
Durchdewald M, Guinea-Viniegra J, Haag D, Riehl A, Lichter P, Hahn M, Wagner EF, Angel P, Hess J. Podoplanin is a novel fos target gene in skin carcinogenesis. Cancer Res 2008; 68:6877-83. [PMID: 18757399 DOI: 10.1158/0008-5472.can-08-0299] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Expression and function of the oncogenic transcription factor activator protein (AP-1; mainly composed of Jun and Fos proteins) is required for neoplastic transformation of keratinocytes in vitro and tumor promotion as well as malignant progression in vivo. Here, we describe the identification of 372 differentially expressed genes comparing skin tumor samples of K5-SOS-F transgenic mice (Fos(f/f) SOS(+)) with samples derived from animals with a specific deletion of c-Fos in keratinocytes (Fos(Deltaep) SOS(+)). Fos-dependent transcription of selected genes was confirmed by quantitative real-time PCR analysis using tumor samples and mouse back skin treated with the tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA). One of the most differentially expressed genes encodes the small mucin-like glycoprotein Podoplanin (Pdpn), whose expression correlates with malignant progression in mouse tumor model systems and human cancer. We found Pdpn and Fos expression in chemically induced mouse skin tumors, and detailed analysis of the Pdpn gene promoter revealed impaired activity in Fos-deficient mouse embryonic fibroblasts, which could be restored by ectopic Fos expression. Direct Fos protein binding to the Pdpn promoter was shown by chromatin immunoprecipitation and a TPA-induced complex at a TPA-responsive element-like motif in the proximal promoter was identified by electrophoretic mobility shift assays. In summary, we could define a Fos-dependent genetic program in a well-established model of skin tumors. Systematic analysis of these novel target genes will guide us in elucidating the molecular mechanisms of AP-1-regulated pathways that are critically implicated in neoplastic transformation and/or malignant progression.
Collapse
Affiliation(s)
- Moritz Durchdewald
- Division of Transduction and Growth Control, German Cancer Research Center, Heidelberg, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Navarro A, Perez RE, Rezaiekhaligh M, Mabry SM, Ekekezie II. T1alpha/podoplanin is essential for capillary morphogenesis in lymphatic endothelial cells. Am J Physiol Lung Cell Mol Physiol 2008; 295:L543-51. [PMID: 18658274 DOI: 10.1152/ajplung.90262.2008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The lymphatic vasculature functions to maintain tissue perfusion homeostasis. Defects in its formation or disruption of the vessels result in lymphedema, the effective treatment of which is hampered by limited understanding of factors regulating lymph vessel formation. Mice lacking T1alpha/podoplanin, a lymphatic endothelial cell transmembrane protein, have malformed lymphatic vasculature with lymphedema at birth, but the molecular mechanism for this phenotype is unknown. Here, we show, using primary human lung microvascular lymphatic endothelial cells (HMVEC-LLy), that small interfering RNA-mediated silence of podoplanin gene expression has the dramatic effect of blocking capillary tube formation in Matrigel. In addition, localization of phosphorylated ezrin/radixin/moesin proteins to plasma membrane extensions, an early event in the capillary morphogenic program in lymphatic endothelial cells, is impaired. We find that cells with decreased podoplanin expression fail to properly activate the small GTPase RhoA early (by 30 min) after plating on Matrigel, and Rac1 shows a delay in its activation. Further indication that podoplanin action is linked to RhoA activation is that use of a cell-permeable inhibitor of Rho inhibited lymphatic endothelial capillary tube formation in the same manner as did podoplanin gene silencing, which was not mimicked by treatment with a Rac1 inhibitor. These data clearly demonstrate that early activation of RhoA in the lymphangiogenic process, which is required for the successful establishment of the capillary network, is dependent on podoplanin expression. To our knowledge, this is the first time that a mechanism has been suggested to explain the role of podoplanin in lymphangiogenesis.
Collapse
Affiliation(s)
- Angels Navarro
- Section of Neonatology, Children's Mercy Hospitals & Clinics, Kansas City, MO 64108, USA
| | | | | | | | | |
Collapse
|
37
|
Kawaguchi H, El-Naggar AK, Papadimitrakopoulou V, Ren H, Fan YH, Feng L, Lee JJ, Kim E, Hong WK, Lippman SM, Mao L. Podoplanin: A Novel Marker for Oral Cancer Risk in Patients With Oral Premalignancy. J Clin Oncol 2008; 26:354-60. [DOI: 10.1200/jco.2007.13.4072] [Citation(s) in RCA: 151] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PurposeOral leukoplakia (OPL) is a heterogeneous oral lesion with an increased oral cancer risk. Current clinical parameters cannot predict the potential of malignant transformation in patients with OPL. We have shown that podoplanin, a lymphatic endothelial marker, is highly expressed in oral cancer and some oral premalignancies. The purpose of this study is to determine a role of podoplanin in predicting oral cancer development in patients with OPL.Patients and MethodsPodoplanin expression was determined in 150 OPL patients with long-term follow-up using immunohistochemistry. Association between the protein expression patterns and clinicopathologic parameters including oral cancer development during the follow-up were analyzed.ResultsFifty-six (37%) of the 150 OPL patients exhibited podoplanin expression in the basal and suprabasal layers and were classified as podoplanin positive. Podoplanin positivity was more frequent in older patients (P = .016), females (P = .020), and dysplastic lesions (P = .040). Patients with OPL that was podoplanin positive had significantly higher incidence of oral cancer than did those whose OPL was podoplanin negative (P = .0002). In the multivariate analysis using histology and podoplanin as cofactors, podoplanin was the only independent factor for oral cancer development (hazard ratio = 3.087; 95% CI, 1.530 to 6.231; P = .002). Importantly, oral cancer risk can be further stratified by considering both histology and podoplanin information.ConclusionPodoplanin is frequently expressed in OPL. Together with histology, podoplanin may serve as a powerful biomarker to predict the risk for oral cancer development in patients with OPL.
Collapse
Affiliation(s)
- Hidetoshi Kawaguchi
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Adel K. El-Naggar
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Vali Papadimitrakopoulou
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Hening Ren
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - You-Hong Fan
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Lei Feng
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - J. Jack Lee
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Edward Kim
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Waun Ki Hong
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Scott M. Lippman
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Li Mao
- From the Departments of Thoracic/Head and Neck Medical Oncology, Biostatistics and Applied Mathematics, and Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| |
Collapse
|
38
|
Hantusch B, Kalt R, Krieger S, Puri C, Kerjaschki D. Sp1/Sp3 and DNA-methylation contribute to basal transcriptional activation of human podoplanin in MG63 versus Saos-2 osteoblastic cells. BMC Mol Biol 2007; 8:20. [PMID: 17343736 PMCID: PMC1828165 DOI: 10.1186/1471-2199-8-20] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2006] [Accepted: 03/07/2007] [Indexed: 12/31/2022] Open
Abstract
Background Podoplanin is a membrane mucin that, among a series of tissues, is expressed on late osteoblasts and osteocytes. Since recent findings have focussed on podoplanin's potential role as a tumour progression factor, we aimed at identifying regulatory elements conferring PDPN promoter activity. Here, we characterized the molecular mechanism controlling basal PDPN transcription in human osteoblast-like MG63 versus Saos-2 cells. Results We cloned and sequenced 2056 nucleotides from the 5'-flanking region of the PDPN gene and a computational search revealed that the TATA and CAAT box-lacking promoter possesses features of a growth-related gene, such as a GC-rich 5' region and the presence of multiple putative Sp1, AP-4 and NF-1 sites. Reporter gene assays demonstrated a functional promoter in MG63 cells exhibiting 30-fold more activity than in Saos-2 cells. In vitro DNase I footprinting revealed eight protected regions flanked by DNaseI hypersensitive sites within the region bp -728 to -39 present in MG63, but not in Saos-2 cells. Among these regions, mutation and supershift electrophoretic mobility shift assays (EMSA) identified four Sp1/Sp3 binding sites and two binding sites for yet unknown transcription factors. Deletion studies demonstrated the functional importance of two Sp1/Sp3 sites for PDPN promoter activity. Overexpression of Sp1 and Sp3 independently increased the stimulatory effect of the promoter and podoplanin mRNA levels in MG63 and Saos-2 cells. In SL2 cells, Sp3 functioned as a repressor, while Sp1 and Sp3 acted positively synergistic. Weak PDPN promoter activity of Saos-2 cells correlated with low Sp1/Sp3 nuclear levels, which was confirmed by Sp1/Sp3 chromatin immunoprecipitations in vivo. Moreover, methylation-sensitive Southern blot analyses and bisulfite sequencing detected strong methylation of CpG sites upstream of bp -464 in MG63 cells, but hypomethylation of these sites in Saos-2 cells. Concomitantly, treatment with the DNA methyltransferase inhibitor 5-azaCdR in combination with trichostatin A (TSA) downregulated podoplanin mRNA levels in MG63 cells, and region-specific in vitro methylation of the distal promoter suggested that DNA methylation rather enhanced than hindered PDPN transcription in both cell types. Conclusion These data establish that in human osteoblast-like MG63 cells, Sp1 and Sp3 stimulate basal PDPN transcription in a concerted, yet independent manner, whereas Saos-2 cells lack sufficient nuclear Sp protein amounts for transcriptional activation. Moreover, a highly methylated chromatin conformation of the distal promoter region confers cell-type specific podoplanin upregulation versus Saos-2 cells.
Collapse
Affiliation(s)
- Brigitte Hantusch
- Institute of Clinical Pathology, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
| | - Romana Kalt
- Institute of Clinical Pathology, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
| | - Sigurd Krieger
- Institute of Clinical Pathology, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
| | - Christina Puri
- Institute of Clinical Pathology, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
| | - Dontscho Kerjaschki
- Institute of Clinical Pathology, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
| |
Collapse
|
39
|
Zhang K, Barragan-Adjemian C, Ye L, Kotha S, Dallas M, Lu Y, Zhao S, Harris M, Harris SE, Feng JQ, Bonewald LF. E11/gp38 selective expression in osteocytes: regulation by mechanical strain and role in dendrite elongation. Mol Cell Biol 2006; 26:4539-52. [PMID: 16738320 PMCID: PMC1489126 DOI: 10.1128/mcb.02120-05] [Citation(s) in RCA: 187] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Within mineralized bone, osteocytes form dendritic processes that travel through canaliculi to make contact with other osteocytes and cells on the bone surface. This three-dimensional syncytium is thought to be necessary to maintain viability, cell-to-cell communication, and mechanosensation. E11/gp38 is the earliest osteocyte-selective protein to be expressed as the osteoblast differentiates into an osteoid cell or osteocyte, first appearing on the forming dendritic processes of these cells. Bone extracts contain large amounts of E11, but immunostaining only shows its presence in early osteocytes compared to more deeply embedded cells, suggesting epitope masking by mineral. Freshly isolated primary osteoblasts are negative for E11 expression but begin to express this protein in culture, and expression increases with time, suggesting differentiation into the osteocyte phenotype. Osteoblast-like cell lines 2T3 and Oct-1 also show increased expression of E11 with differentiation and mineralization. E11 is highly expressed in MLO-Y4 osteocyte-like cells compared to osteoblast cell lines and primary osteoblasts. Differentiated, mineralized 2T3 cells and MLO-Y4 cells subjected to fluid flow shear stress show an increase in mRNA for E11. MLO-Y4 cells show an increase in dendricity and elongation of dendrites in response to shear stress that is blocked by small interfering RNA specific to E11. In vivo, E11 expression is also increased by a mechanical load, not only in osteocytes near the bone surface but also in osteocytes more deeply embedded in bone. Maximal expression is observed not in regions of maximal strain but in a region of potential bone remodeling, suggesting that dendrite elongation may be occurring during this process. These data suggest that osteocytes may be able to extend their cellular processes after embedment in mineralized matrix and have implications for osteocytic modification of their microenvironment.
Collapse
Affiliation(s)
- Keqin Zhang
- Department of Oral Biology, School of Dentistry, University of Missouri at Kansas City, 630 East 25th Street, Kansas City, MO 64108-2784, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Mishima K, Kato Y, Kaneko MK, Nakazawa Y, Kunita A, Fujita N, Tsuruo T, Nishikawa R, Hirose T, Matsutani M. Podoplanin expression in primary central nervous system germ cell tumors: a useful histological marker for the diagnosis of germinoma. Acta Neuropathol 2006; 111:563-8. [PMID: 16718353 DOI: 10.1007/s00401-006-0033-4] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2005] [Revised: 12/13/2005] [Accepted: 12/14/2005] [Indexed: 11/28/2022]
Abstract
Podoplanin, a mucin-like transmembrane sialoglycoprotein, promotes platelet aggregation and may be involved in cancer cell migration, invasion, metastasis, and malignant progression. Podoplanin/aggrus is highly expressed in testicular seminoma, suggesting that it may be a sensitive marker for testicular seminomas. Here we investigated the expression of podoplanin in central nervous system (CNS) germ cell tumors (GCTs) by immunohistochemical staining of tumor samples from 62 patients. In 40 of 41 (98%) germinomas (including germinomatous components in mixed GCTs), podoplanin was diffusely expressed on the surface of germinoma cells; lymphocytes, interstitial cells, and syncytiotrophoblastic giant cells were negative for podoplanin. Except for immature teratomas (12/17; 71%), podoplanin expression was absent in non-germinomatous GCTs, including seven teratomas, seven embryonal carcinomas, seven yolk sac tumors, and seven choriocarcinomas. In immature teratomas, focal podoplanin staining was observed in fewer than 10% of immature squamous and columnar epithelial cells. Thus, podoplanin expression may be a sensitive immunohistochemical marker for germinoma in CNS GCTs. As such, it may be useful for diagnosis, for monitoring the efficacy of treatment, and as a potential target for antibody-based therapy.
Collapse
Affiliation(s)
- Kazuhiko Mishima
- Department of Neurosurgery, Saitama Medical School, 38 Morohongo, Moroyama-machi, Iruma-gun, 350-0495, Saitama, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Mishima K, Kato Y, Kaneko MK, Nishikawa R, Hirose T, Matsutani M. Increased expression of podoplanin in malignant astrocytic tumors as a novel molecular marker of malignant progression. Acta Neuropathol 2006; 111:483-8. [PMID: 16596424 DOI: 10.1007/s00401-006-0063-y] [Citation(s) in RCA: 172] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2006] [Revised: 02/22/2006] [Accepted: 03/06/2006] [Indexed: 10/24/2022]
Abstract
Podoplanin (aggrus) is a mucin-like transmembrane sialoglycoprotein that is expressed on lymphatic endothelial cells. Podoplanin is putatively involved in cancer cell migration, invasion, metastasis, and malignant progression and may be involved in platelet aggregation. Previously, we showed upregulated expression of podoplanin in central nervous system (CNS) germinomas, but not in non-germinomatous germ cell tumors, except for parts of immature teratomas in limited numbers. However, little information exists about its role in CNS astrocytic tumors. In this study, 188 astrocytic tumors (30 diffuse astrocytomas, 43 anaplastic astrocytomas, and 115 glioblastomas) were investigated using immunohistochemistry with an anti-podoplanin antibody, YM-1. In 11 of 43 anaplastic astrocytomas (25.6%) and in 54 of 115 glioblastomas (47.0%), podoplanin was expressed on the surface of anaplastic astrocytoma cells and glioblastoma cells, especially around necrotic areas and proliferating endothelial cells. However, the surrounding brain parenchyma was not stained by YM-1. On the other hand, podoplanin expression was not observed in diffuse astrocytoma (0/30: 0%). Furthermore, we investigated the expression of podoplanin using quantitative real-time PCR and Western blot analysis in 54 frozen astrocytic tumors (6 diffuse astrocytomas, 14 anaplastic astrocytomas, and 34 glioblastomas). Podoplanin mRNA and protein expression were markedly higher in glioblastomas than in anaplastic astrocytomas. These data suggest that podoplanin expression might be associated with malignancy of astrocytic tumors.
Collapse
Affiliation(s)
- Kazuhiko Mishima
- Department of Neurosurgery, Saitama Medical School, Saitama, 350-0495, Japan
| | | | | | | | | | | |
Collapse
|
42
|
Martín-Villar E, Scholl FG, Gamallo C, Yurrita MM, Muñoz-Guerra M, Cruces J, Quintanilla M. Characterization of human PA2.26 antigen (T1alpha-2, podoplanin), a small membrane mucin induced in oral squamous cell carcinomas. Int J Cancer 2005; 113:899-910. [PMID: 15515019 DOI: 10.1002/ijc.20656] [Citation(s) in RCA: 225] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the full cDNA sequence encoding the human homologue of murine PA2.26 (T1alpha-2, podoplanin), a small mucin-type transmembrane glycoprotein originally identified as a cell-surface antigen induced in keratinocytes during mouse skin carcinogenesis. The human PA2.26 gene is expressed as 2 transcripts of 0.9 and 2.7 kb in several normal tissues, such as the placenta, skeletal muscle, heart and lung. Using a specific polyclonal antibody raised against a synthetic peptide of the protein ectodomain, PA2.26 was immunohistochemically detected in about 25% (15/61) of human early oral squamous cell carcinomas. PA2.26 distribution in the tumours was heterogeneous and often restricted to the invasive front. Double immunofluorescence and confocal microscopy analysis showed that PA2.26 colocalized with the membrane cytoskeleton linker ezrin at the surface of tumour cells and that its presence in vivo was associated with downregulation of membrane E-cadherin protein expression. Ectopic expression of human PA2.26 in HeLa carcinoma cells and immortalized HaCaT keratinocytes promoted a redistribution of ezrin to the cell edges, the formation of cell-surface protrusions and reduced Ca(2+)-dependent cell-cell adhesiveness. These results point to PA2.26 as a novel biomarker for oral squamous cell carcinomas that might be involved in migration/invasion.
Collapse
Affiliation(s)
- Ester Martín-Villar
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
43
|
Muñoz-Guerra MF, Marazuela EG, Martín-Villar E, Quintanilla M, Gamallo C. Prognostic significance of intratumoral lymphangiogenesis in squamous cell carcinoma of the oral cavity. Cancer 2004; 100:553-60. [PMID: 14745872 DOI: 10.1002/cncr.11933] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Clinicopathologic data demonstrated that the lymphatic system is the main route for solid tumor metastasis. However, the effect of intratumoral lymphangiogenesis (IL) on prognosis in oral carcinoma is still unknown because, until recently, no reliable markers for lymphatic endothelium were available. The current study analyzed the lymphatic vessels in tumor tissue specimens of patients with primary oral carcinoma using the new marker, PA2.26. METHODS The authors investigated IL in surgical tissue samples of 61 patients with early-stage (Stages I-II) oral carcinoma. The tissue specimens were stained for PA2.26 and the correlation between IL and relevant parameters was analyzed by the Pearson chi-square test. In a univariate analysis using the Kaplan-Meier method, IL was analyzed against survival and disease-free period. Statistical significance of differences between distributions was studied by the log-rank test. Clinicopathologic parameters, including IL, were entered in a multivariate analysis to determine independent prognostic significance. RESULTS Thirty-three patients had IL. In the follow-up, a strong association was found between IL and locoregional recurrence (30.3 % of the patients with IL and 7.1% of the patients without IL). The presence of IL did not correlate significantly with the pT classification, primary location, or tumor differentiation. IL was found to have no influence on overall survival in univariate analysis, but there was significant association between IL and disease-free survival (P=0.03). Multivariate analysis revealed IL to be the sole independent factor influencing disease-free interval (P=0.02). CONCLUSIONS These results suggested that IL is associated with locoregional disease recurrence in early-stage oral carcinoma. The presence of IL was a useful discriminator in predicting the outcome of patients with absence of lymph node metastasis.
Collapse
Affiliation(s)
- Mario Fernando Muñoz-Guerra
- Department of Oral and Maxillofacial Surgery, Hospital de la Princesa, Universidad Autónoma de Madrid, Madrid, Spain
| | | | | | | | | |
Collapse
|