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Podoplanin

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https://www.readbyqxmd.com/read/28104688/mice-with-a-deficiency-in-clec-2-are-protected-against-deep-vein-thrombosis
#1
Holly Payne, Tatyana Ponomaryov, Steve P Watson, Alexander Brill
Deep vein thrombosis (DVT) with its major complication, pulmonary embolism, is a global health problem. Mechanisms of DVT remain incompletely understood. Platelets play a role in DVT but the impact of specific platelet receptors remains unclear. Platelet C-type lectin-like receptor 2 (CLEC-2) is known to maintain the physiological state of blood vasculature under inflammatory conditions. DVT is a thromboinflammatory disorder developing largely as sterile inflammation in the vessel wall. We hypothesized therefore that CLEC-2 might play a role in DVT...
January 19, 2017: Blood
https://www.readbyqxmd.com/read/28101903/development-and-characterization-of-anti-glycopeptide-monoclonal-antibodies-against-human-podoplanin-using-glycan-deficient-cell-lines-generated-by-crispr-cas9-and-talen
#2
Mika K Kaneko, Takuro Nakamura, Ryusuke Honma, Satoshi Ogasawara, Yuki Fujii, Shinji Abe, Michiaki Takagi, Hiroyuki Harada, Hiroyoshi Suzuki, Yasuhiko Nishioka, Yukinari Kato
Human podoplanin (hPDPN), which binds to C-type lectin-like receptor-2 (CLEC-2), is involved in platelet aggregation and cancer metastasis. The expression of hPDPN in cancer cells or cancer-associated fibroblasts indicates poor prognosis. Human lymphatic endothelial cells, lung-type I alveolar cells, and renal glomerular epithelial cells express hPDPN. Although numerous monoclonal antibodies (mAbs) against hPDPN are available, they recognize peptide epitopes of hPDPN. Here, we generated a novel anti-hPDPN mAb, LpMab-21...
January 19, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28099545/cutaneous-adnexal-carcinoma-with-apocrine-differentiation
#3
Vikram Prasad, Wynn H Kao, Grace F Kao
Primary cutaneous apocrine carcinomas are uncommon malignant neoplasms that can be difficult, if not impossible, to distinguish histologically from metastatic breast carcinomas. We present the case of a 71-year-old man with a 5-year history of extensive ulcerated plaques on the posterior neck and posterior scalp. Biopsy revealed a poorly differentiated infiltrating adenocarcinoma consistent with either primary cutaneous apocrine carcinoma or occult metastatic breast carcinoma. Immunohistochemical analysis demonstrated positive staining for cytokeratin (CK) 7, estrogen receptor, and progesterone receptor, and negative staining for p63, podoplanin, CK20, and thyroid transcription factor 1...
December 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28097642/adrenal-cyst-with-both-m%C3%A3-llerian-and-mesothelial-differentiation-a-clinicopathological-and-immunohistochemical-study-with-implications-for-histogenesis
#4
Łukasz Koperski, Benedykt Szczepankiewicz, Paweł Pihowicz, Łukasz Fus, Ewa Wolińska, Barbara Górnicka
True epithelial-lined cysts are rare forms of adrenal cystic lesions, the pathogenesis of which is still not fully understood. In this report we present a case of an adrenal cyst diagnosed incidentally on imaging in a 31-year-old, previously healthy, obese woman. Due to non-specific hormonal disorders and enlargement of the lesion, a right-sided laparoscopic adrenalectomy was performed. The cyst was lined predominantly by ciliated cuboidal-to-columnar, Müllerian-type epithelium, and focally by flat-to-cuboidal, mesothelium-like lining...
January 18, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28073783/podoplanin-expression-in-primary-brain-tumors-induces-platelet-aggregation-and-increases-risk-of-venous-thromboembolism
#5
Julia Riedl, Matthias Preusser, Pegah Mir Seyed Nazari, Florian Posch, Simon Panzer, Christine Marosi, Peter Birner, Johannes Thaler, Christine Brostjan, Daniela Lötsch, Walter Berger, Johannes A Hainfellner, Ingrid Pabinger, Cihan Ay
Venous thromboembolism (VTE) is common in patients with brain tumors, and underlying mechanisms are unclear. We hypothesized that podoplanin, a sialomucin-like glycoprotein, increases the risk of VTE in primary brain tumors via its ability to induce platelet aggregation. Immunohistochemical staining against podoplanin and intratumoral platelet aggregates was performed in brain tumor specimens of 213 patients (mostly high-grade gliomas [89%]) included in the Vienna Cancer and Thrombosis Study (CATS), a prospective observational cohort study of patients with newly diagnosed cancer or progressive disease aimed at identifying patients at risk of VTE...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28059107/single-cell-time-lapse-analysis-reveals-that-podoplanin-enhances-cell-survival-and-colony-formation-capacity-of-squamous-cell-carcinoma-cells
#6
Tomoyuki Miyashita, Youichi Higuchi, Motohiro Kojima, Atsushi Ochiai, Genichiro Ishii
Tumor initiating cells (TICs) are characterized by high clonal expansion capacity. We previously reported that podoplanin is a TIC-specific marker for the human squamous cell carcinoma cell line A431. The aim of this study is to explore the molecular mechanism underlying the high clonal expansion potential of podoplanin-positive A431cells using Fucci imaging. Single podoplanin-positive cells created large colonies at a significantly higher frequency than single podoplanin-negative cells, whereas no difference was observed between the two types of cells with respect to cell cycle status...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28057926/ifn-type-i-and-ii-induce-baff-secretion-from-human-decidual-stromal-cells
#7
Anna-Carin Lundell, Inger Nordström, Kerstin Andersson, Christina Lundqvist, Esbjörn Telemo, Silvia Nava, Helen Kaipe, Anna Rudin
B cell activating factor (BAFF) is a critical cytokine for maturation of immature B cells. In murine lymph nodes, BAFF is mainly produced by podoplanin-expressing stromal cells. We have previously shown that circulating BAFF levels are maximal at birth, and that farmers' children exhibit higher BAFF levels in cord blood than non-farmers' children. Here, we sought to investigate whether maternal-derived decidual stromal cells from placenta secrete BAFF and examine what factors could stimulate this production...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28055225/overexpression-of-prox1-induces-the-differentiation-of-human-adipose-derived-stem-cells-into-lymphatic-endothelial-like-cells-in-vitro
#8
Jingcheng Deng, Tingting Dai, Yiyu Sun, Qi Zhang, Zhaohua Jiang, Shengli Li, Weigang Cao
Constant levels of homeobox transcription factor Prox1 expression are required throughout the life of lymphatic endothelial cells (LECs) to maintain their differentiated identity. Recent studies have demonstrated that using human LECs for cell transplantation therapy may improve secondary lymphedema in a nude rat model. However, the application is currently limited by the low yield of LECs. In this study, Prox1 was overexpressed in human adipose tissue-derived stem cells (hADSCs) by using the transfection of lentiviral vectors to induce the differentiation of hADSCs to LECs...
January 5, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28052488/lymphatic-endothelial-cells-produce-m-csf-causing-massive-bone-loss-in-mice
#9
Wensheng Wang, Hua Wang, Xichao Zhou, Xing Li, Sun Wen, Michael Dellinger, Brendan F Boyce, Lianping Xing
Gorham-Stout disease (GSD) is a rare bone disorder characterized by aggressive osteolysis associated with lymphatic vessel invasion within bone marrow cavities. The etiology of GSD is not known and there is no effective therapy or animal model for the disease. Here, we investigated if lymphatic endothelial cells (LECs) affect osteoclasts (OCs) to cause a GSD osteolytic phenotype in mice. We examined the effect of a mouse LEC line on osteoclastogenesis in co-cultures. LECs significantly increased RANKL-mediated OC formation and bone resorption...
January 4, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28028907/clec-2-promotes-hematogenous-tumor-metastasis-and-prothrombotic-state-in-tumor-bearing-mice
#10
Toshiaki Shirai, Osamu Inoue, Shogo Tamura, Nagaharu Tsukiji, Tomoyuki Sasaki, Hiroshi Endo, Kaneo Satoh, Makoto Osada, Hitomi Sato-Uchida, Hideki Fujii, Yukio Ozaki, Katsue Suzuki-Inoue
BACKGROUND: C-type lectin-like receptor 2 (CLEC-2) is a platelet activation receptor of sialoglycoprotein podoplanin, which is expressed on the surface of certain types of tumor cells. CLEC-2-podoplanin interactions facilitate hematogenous tumor metastasis. However, direct evidence of the role of CLEC-2 in hematogenous metastasis and cancer progression is lacking. OBJECTIVE AND METHODS: We generated immunological CLEC-2-depleted mice by using anti-mouse CLEC-2 monoclonal antibody 2A2B10 and investigated whether CLEC-2 promoted hematogenous tumor metastasis and tumor growth and exacerbated the prognosis of mice bearing podoplanin-expressing B16F10 melanoma cells...
December 27, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28011493/podoplanin-expression-in-cancer-associated-fibroblasts-predicts-poor-prognosis-in-patients-with-squamous-cell-carcinoma-of-the-lung
#11
Yohei Yurugi, Makoto Wakahara, Yuki Matsuoka, Tomohiko Sakabe, Yasuaki Kubouchi, Tomohiro Haruki, Kanae Nosaka, Ken Miwa, Kunio Araki, Yuji Taniguchi, Tatsushi Shiomi, Hiroshige Nakamura, Yoshihisa Umekita
BACKGROUND/AIM: Podoplanin is a candidate cancer stem cell marker in squamous cell carcinoma (SCC). Several studies have reported the prognostic value of podoplanin expression in tumor cells in lung SCC but few have focused on its expression in cancer-associated fibroblasts (CAFs). The aim of this study was to analyze the prognostic significance of podoplanin expression, with special reference to the expression pattern in both tumor cells and CAFs. PATIENTS AND METHODS: Immunohistochemical analyses using anti-podoplanin antibody were performed on 126 resected specimens of lung SCC...
January 2017: Anticancer Research
https://www.readbyqxmd.com/read/27996035/induction-of-cancer-associated-fibroblast-like-cells-by-carbon-nanotubes-dictates-its-tumorigenicity
#12
Sudjit Luanpitpong, Liying Wang, Vincent Castranova, Cerasela Zoica Dinu, Surapol Issaragrisil, Yi Charlie Chen, Yon Rojanasakul
Tumor microenvironment has been recognized as a key determinant of tumor formation and metastasis, but how tumor microenvironment is affected by nanomaterials is essentially unknown. Here, we investigated whether carbon nanotubes (CNTs), a widely used nanomaterial with known carcinogenic potential, can affect cancer-associated fibroblasts (CAFs), which are a key component of tumor microenvironment that provides necessary support for tumor growth. We show for the first time that single-walled CNT and to a lesser extent multi-walled and its COOH-functionalized form induced CAF-like cells, which are non-tumorigenic in animals, but promote tumor growth of human lung carcinoma and CNT-transformed lung epithelial cells...
December 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27960039/physiological-and-pathophysiological-roles-of-interaction-between-clec-2-and-podoplanin-partners-from-in-utero-to-adulthood
#13
REVIEW
Katsue Suzuki-Inoue, Makoto Osada, Yukio Ozaki
A platelet activation receptor, C-type lectin-like receptor 2 (CLEC-2) has been identified as a receptor for a platelet activating snake venom, rhodocytin. CLEC-2 protein is highly expressed in platelets/megakaryocytes and at lower levels on liver Kupffer cells. Later, podoplanin has been revealed as an endogenous ligand for CLEC-2. Podoplanin is expressed in certain types of tumor cells, fibroblastic reticular cells (FRCs) in lymph nodes, kidney podocytes, and lymphatic endothelial cells, but not in vascular endothelial cells...
December 13, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27918691/podoplanin-expression-in-canine-melanoma
#14
Satoshi Ogasawara, Ryusuke Honma, Mika K Kaneko, Yuki Fujii, Yumiko Kagawa, Satoru Konnai, Yukinari Kato
A type I transmembrane protein, podoplanin (PDPN), is expressed in several normal cells such as lymphatic endothelial cells or pulmonary type I alveolar cells. We recently demonstrated that anticanine PDPN monoclonal antibody (mAb), PMab-38, recognizes canine PDPN of squamous cell carcinomas, but does not react with lymphatic endothelial cells. Herein, we investigated whether PMab-38 reacts with canine melanoma. PMab-38 reacted with 90% of melanoma cells (9/10 cases) using immunohistochemistry. Of interest, PMab-38 stained the lymphatic endothelial cells and cancer-associated fibroblasts in melanoma tissues, although it did not stain any lymphatic endothelial cells in normal tissues...
December 2016: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/27899983/hur-and-podoplanin-expression-is-associated-with-a-high-risk-of-malignant-transformation-in-patients-with-oral-preneoplastic-lesions
#15
Umma Habiba, Tetsuya Kitamura, Aya Yanagawa-Matsuda, Fumihiro Higashino, Kyoko Hida, Yasunori Totsuka, Masanobu Shindoh
The risk of malignant transformation in oral preneoplastic lesions (OPLs) is challenging to assess. The objective of the present study was to determine the expression of ELAV like RNA binding protein 1 (HuR) and podoplanin in OPLs, and to evaluate the use of each protein as biomarkers for the risk assessment of malignant transformations. Immunohistochemistry for HuR and podoplanin was performed on the tissues of 51 patients with OPL, including cases of low grade dysplasia (LGD) and high grade dysplasia (HGD)...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27881889/expression-of-caf-related-proteins-is-associated-with-histologic-grade-of-breast-phyllodes-tumor
#16
Hye Min Kim, Yu Kyung Lee, Ja Seung Koo
Purpose. The purpose of this study was to investigate the expression of cancer-associated fibroblast- (CAF-) related proteins and the implications in breast phyllodes tumor (PT). Methods. Tissue microarrays of 194 PT cases (151 benign PT, 27 borderline PT, and 16 malignant PT) were constructed. We performed immunohistochemical staining for CAF-related proteins (podoplanin, prolyl 4-hydroxylase, FAPα, S100A4, PDGFR α/β, and NG2) and analyzed the results according to clinicopathologic parameters. Results. Expression of PDGFRα and PDGFRβ in the stromal component increased with increasing histologic grade of PT (p = 0...
2016: Disease Markers
https://www.readbyqxmd.com/read/27877228/lymphangiogenesis-in-classical-hodgkin-lymphoma-preliminary-study-with-clinicopathological-correlations
#17
Daniel Benharroch, Isebrand Prinsloo, Jacob Gopas, Irena Lazarev
A role for lymphangiogenesis in metastatic breast and prostate cancers has been suggested recently. The relevance of lymphangiogenesis in cancer as a rule, and more specifically in classical Hodgkin lymphoma, is poorly understood in comparison with that of angiogenesis. In a preliminary (pilot) study we have investigated the role of lymphatic vessels growth in 19 cases of classical Hodgkin lymphoma stained with the D2-40 (podoplanin) antibody. In each case, three lymphatic vessels hot spots were scrutinized twice...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27875814/characterisation-of-prognosis-and-invasion-of-cutaneous-squamous-cell-carcinoma-by-podoplanin-and-e-cadherin-expression
#18
Kristina Hesse, Imke Satzger, Vivien Schacht, Brigitta Köther, Uwe Hillen, Joachim Klode, Katrin Schaper, Ralf Gutzmer
BACKGROUND: Around 5% of all cutaneous squamous cell carcinoma (cSCC) metastasise. Metastases usually locate in regional skin and lymph nodes, suggesting collective cancer invasion. The cellular level of tumour invasion and prognostic parameters remain to be characterised. METHODS: We performed immunohistochemical analyses of E-cadherin (marker for collective cancer invasion) and podoplanin (marker for epithelial-mesenchymal transition [EMT], single-cell invasion) expression in 102 samples of metastatic and non-metastatic cSCC and 18 corresponding skin and lymph node metastases to characterise the invasion of cSCC...
2016: Dermatology: International Journal for Clinical and Investigative Dermatology
https://www.readbyqxmd.com/read/27863512/rheumatoid-synovial-fibroblasts-differentiate-into-distinct-subsets-in-the-presence-of-cytokines-and-cartilage
#19
Adam P Croft, Amy J Naylor, Jennifer L Marshall, Debbie L Hardie, Birgit Zimmermann, Jason Turner, Guillaume Desanti, Holly Adams, Adrian I Yemm, Ulf Müller-Ladner, Jean-Michel Dayer, Elena Neumann, Andrew Filer, Christopher D Buckley
BACKGROUND: We investigated two distinct synovial fibroblast populations that were located preferentially in the lining or sub-lining layers and defined by their expression of either podoplanin (PDPN) or CD248, and explored their ability to undergo self-assembly and transmigration in vivo. METHODS: Synovial fibroblasts (SF) were cultured in vitro and phenotypic changes following stimulation with interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and transforming growth factor (TGF)-β1 were examined...
November 18, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27859616/immunohistochemical-expression-of-podoplanin-d2-40-lymphangiogenesis-and-neoangiogenesis-in-tooth-germ-ameloblastomas-and-ameloblastic-carcinomas
#20
Celeste Sánchez-Romero, Ronell Bologna-Molina, Adalberto Mosqueda-Taylor, Oslei Paes de Almeida
BACKGROUND: Ameloblastoma is a benign but locally aggressive odontogenic tumor, while ameloblastic carcinoma is its malignant counterpart. Angiogenesis and lymphangiogenesis in malignancies have been correlated with higher aggressiveness and poor prognosis, as well as greater expression of podoplanin by tumoral cells. METHODS: Immunohistochemical expression of podoplanin, CD34, and CD105 (endoglin) was evaluated in 53 ameloblastomas and three ameloblastic carcinomas; additionally, immunohistochemistry for podoplanin was also performed in 10 tooth germs...
November 10, 2016: Journal of Oral Pathology & Medicine
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