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Podoplanin

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https://www.readbyqxmd.com/read/29133178/lymphatic-vasculature-in-human-dural-superior-sagittal-sinus-implications-for-neurodegenerative-proteinopathies
#1
Naomi P Visanji, Anthony E Lang, David G Munoz
Recent reports have characterized functional lymphatic vessels, which drain both fluid and immune cells from the CSF to the deep cervical lymph nodes, lining the dural sinuses in mice. If conserved in the human brain these vessels could have profound implications for neuroinflammatory and neurodegenerative diseases. We provide evidence of the presence of lymphatic vessels in human dura obtained at autopsy, at the level of the superior sagittal sinus, in 4 individuals. Immunohistochemistry for the lymphatic vessel endothelial cell marker podoplanin revealed the widespread presence of multiple structures with a distinct lumen distributed throughout the superior sagittal sinus...
November 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29123994/pattern-of-invasion-in-squamous-cell-carcinomas-of-the-lower-lip-and-oral-cavity
#2
Shahroo Etemad-Moghadam, Mojgan Alaeddini
Background: A number of factors may be responsible for the differences in the biologic behaviors of oral and lower lip squamous cell carcinomas (SCCs). Immunohistochemical invasion profiles have been used to detect invasion patterns like epithelial-mesenchymal-transition (EMT) and collective-cell-invasion (CCI), which have not been investigated in lower lip neoplasms. The aim of the present study was to compare the invasive phenotypes of SCCs of the lower lip and oral cavity. Method: A total of 44 OSCCs and 37 lower lip SCCs were immunostained with E-Cadherin, N-Cadherin, and podoplanin...
September 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/29118051/chronic-inflammation-is-a-feature-of-achilles-tendinopathy-and-rupture
#3
Stephanie Georgina Dakin, Julia Newton, Fernando O Martinez, Robert Hedley, Stephen Gwilym, Natasha Jones, Hamish A B Reid, Simon Wood, Graham Wells, Louise Appleton, Kim Wheway, Bridget Watkins, Andrew Jonathan Carr
BACKGROUND: Recent investigation of human tissue and cells from positional tendons such as the rotator cuff has clarified the importance of inflammation in the development and progression of tendon disease. These mechanisms remain poorly understood in disease of energy-storing tendons such as the Achilles. Using tissue biopsies from patients, we investigated if inflammation is a feature of Achilles tendinopathy and rupture. METHODS: We studied Achilles tendon biopsies from symptomatic patients with either mid-portion tendinopathy or rupture for evidence of abnormal inflammatory signatures...
November 8, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29110840/immunohistochemical-and-genetic-characteristics-of-lung-cancer-mimicking-organizing-pneumonia
#4
Tomohiro Ichikawa, Koichi Saruwatari, Sachiyo Mimaki, Masato Sugano, Keiju Aokage, Motohiro Kojima, Tomoyuki Hishida, Satoshi Fujii, Junji Yoshida, Takeshi Kuwata, Atsushi Ochiai, Kenji Suzuki, Masahiro Tsuboi, Koichi Goto, Katsuya Tsuchihara, Genichiro Ishii
INTRODUCTION: Lung cancer mimicking organizing pneumonia (LCOP) is a novel radiological entity of lung adenocarcinoma that could be misdiagnosed as inflammatory lesions. However, the characteristic biological and genetic features of LCOP are not fully clarified. MATERIALS AND METHODS: We used thin-section CT images to select cases of (LCOP) among surgically resected lung adenocarcinoma patients. We compared the clinicopathological characteristics and the immunophenotypes of LCOP (n=44) and other lepidic-predominant adenocarcinomas (non-LCOP, n=56)...
November 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29109283/sirp%C3%AE-dendritic-cells-regulate-homeostasis-of-fibroblastic-reticular-cells-via-tnf-receptor-ligands-in-the-adult-spleen
#5
Yasuyuki Saito, Datu Respatika, Satomi Komori, Ken Washio, Taichi Nishimura, Takenori Kotani, Yoji Murata, Hideki Okazawa, Hiroshi Ohnishi, Yoriaki Kaneko, Katsuyuki Yui, Koji Yasutomo, Chikako Nishigori, Yoshihisa Nojima, Takashi Matozaki
In secondary lymphoid organs, development and homeostasis of stromal cells such as podoplanin (Pdpn)-positive fibroblastic reticular cells (FRCs) are regulated by hematopoietic cells, but the cellular and molecular mechanisms of such regulation have remained unclear. Here we show that ablation of either signal regulatory protein α (SIRPα), an Ig superfamily protein, or its ligand CD47 in conventional dendritic cells (cDCs) markedly reduced the number of CD4(+) cDCs as well as that of Pdpn(+) FRCs and T cells in the adult mouse spleen...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29100400/circulating-epithelial-cell-counts-for-monitoring-the-therapeutic-outcome-of-patients-with-papillary-thyroid-carcinoma
#6
Ching-Ping Tseng, Kong-Kit Leong, Miaw-Jene Liou, Hsueh-Ling Hsu, Hung-Chih Lin, Yi-An Chen, Jen-Der Lin
Loco-regional recurrence or distant metastasis usually leads to the death of patients with papillary thyroid carcinoma (PTC). Whether or not circulating epithelial cells (CECs) count is a valuable marker in monitoring the therapeutic outcome of PTC was investigated. Patients with PTC (n=129) were treated in our medical center and were categorized into 4 groups with excellent (n=45), biochemical incomplete (n=15), indeterminate (n=37), and structural incomplete (n=32) responses. CECs were enriched from the peripheral blood by the PowerMag negative selection system...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29090969/expression-of-cat-podoplanin-in-feline-squamous-cell-carcinomas
#7
Shunsuke Itai, Shinji Yamada, Mika K Kaneko, Hiroyuki Harada, Yumiko Kagawa, Satoru Konnai, Yukinari Kato
Oral squamous cell carcinoma is an aggressive tumor in cats; however, molecular-targeted therapies against this tumor, including antibody therapy, have not been developed. Sensitive and specific monoclonal antibodies (mAbs) against highly expressed membrane proteins are needed to develop antibody therapies. Podoplanin, a type I transmembrane glycoprotein, is expressed in many human malignant tumors, including brain tumor, esophageal cancer, lung cancer, mesothelioma, and oral cancer. Podoplanin binds to C-type lectin-like receptor-2 (CLEC-2) and activates platelet aggregation, which is involved in cancer metastasis...
November 1, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/29090616/mouse-podoplanin-supports-adhesion-and-aggregation-of-platelets-under-arterial-shear-a-novel-mechanism-of-haemostasis
#8
Stephanie E Lombard, Alice Y Pollitt, Craig E Hughes, Ying Di, Tom Mckinnon, Chris A O'callaghan, Steve P Watson
The podoplanin-CLEC-2 axis is critical in mice for prevention of hemorrhage in the cerebral vasculature during mid-gestation. This raises the question as to how platelets are captured by podoplanin on neuroepithelial cells in a high shear environment. In this study, we demonstrate that mouse platelets form stable aggregates on mouse podoplanin at arterial shear through a CLEC-2 and Src kinase-dependent pathway. Adhesion and aggregation are also dependent on the platelet glycoprotein (GP) receptors, integrin αIIbβ3 and GPIb, and the feedback agonists ADP and thromboxane A2 (TxA2)...
November 1, 2017: Platelets
https://www.readbyqxmd.com/read/29077522/a-novel-uveolymphatic-drainage-pathway-possible-new-target-for-glaucoma-treatment
#9
Martyna Tomczyk-Socha, Anna Turno-Kręcicka
Glaucoma is a heterogeneous group of ophthalmic diseases leading to irreversible damage to the optic nerve. While the overall mechanism responsible for glaucoma remains obscure, the most important risk factor is elevated intraocular pressure. The current therapies, whether pharmacological or surgical, are primarily symptomatic with the aim to lower the intraocular pressure (IOP). Poorer response to treatment is associated, for example, with pseudoexfoliation glaucoma, which is determined by blocking the trabecular meshwork (TM) both by pigment grains and the pseudoexfoliation material...
October 27, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29052783/anatomical-study-of-the-left-superior-mediastinal-lymphatics-for-tracheal-branches-of-left-recurrent-laryngeal-nerve-preserving-mediastinoscope-assisted-surgery-in-esophageal-cancer
#10
Yutaka Nakajima, Yutaka Tokairin, Yasuaki Nakajima, Kenro Kawada, Kagami Nagai, Kumiko Yamaguchi, Keiichi Akita, Tatsuyuki Kawano
PURPOSE: Curative treatment of esophageal cancer requires meticulous superior mediastinal lymphadenectomy, in addition to esophagectomy, because superior mediastinal lymph node metastases are common in esophageal cancer. When preserving the tracheal branches of the left recurrent laryngeal nerve (RLN), good anatomical understanding is required for confirmation of the positional relationships between the courses of lymphatic vessels, lymph node distribution, and the left RLN and its tracheal branches...
October 20, 2017: Surgery Today
https://www.readbyqxmd.com/read/29023936/understanding-patterns-of-invasion-a-novel-approach-to-assessment-of-podoplanin-expression-in-prediction-of-lymph-node-metastasis-in-oscc
#11
Ankita Sharma, Karen Boaz, Srikant Natarajan
BACKGROUND: Cellular motility is considered central to the process of metastasis and podoplanin expression can be explored as a prospective link due to its ability to modulate actin cytoskeleton. We aimed to evaluate the tumoural expression of D2-40 (mono-clonal antibody to podoplanin) in pathologically neck-node negative/positive cases (pN0/N+) to characterise the pattern of invasion, potentially explaining the role of various patterns of invasion in causing tumor metastasis. METHODS: Paraffin-embedded tissue blocks of 60 cases of OSCC of known nodal status were selected for immunohistochemical staining of tumour (invasive front) by D2-40 (anti-podoplanin) along with routine staining by Haematoxylin & Eosin...
October 11, 2017: Histopathology
https://www.readbyqxmd.com/read/28982860/correlation-between-expression-of-twist-and-podoplanin-in-ductal-breast-carcinoma
#12
Jedrzej Grzegrzolka, Patrycja Wojtyra, Martyna Biala, Aleksandra Piotrowska, Agnieszka Gomulkiewicz, Janusz Rys, Marzenna Podhorska-Okolow, Piotr Dziegiel
BACKGROUND/AIM: As a result of activation of transcription factors engaged in epithelial-mesenchymal transition (EMT), such as Twist, inhibition of epithelial markers and an increased expression of mesenchymal markers are observed. One of the specific markers of cancer-associated fibroblasts is podoplanin (PDPN) - a mucin-type membrane glycoprotein. The aim of this work was to study the localisation and intensity of expression of Twist and PDPN on the mRNA and protein level in cases of invasive ductal breast carcinoma (IDC), and its association with patients' clinico-pathological data...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28938000/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
#13
Jaroslaw Suchanski, Anna Tejchman, Maciej Zacharski, Aleksandra Piotrowska, Jedrzej Grzegrzolka, Grzegorz Chodaczek, Katarzyna Nowinska, Janusz Rys, Piotr Dziegiel, Claudine Kieda, Maciej Ugorski
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...
2017: PloS One
https://www.readbyqxmd.com/read/28935175/cd61-and-caf-were-found-to-be-good-prognosis-factors-for-invasive-breast-cancer-patients
#14
Dongyan Cai, Xiaohong Wu, Tingting Hong, Yong Mao, Xiaosong Ge, Dong Hua
BACKGROUND: During the epithelial tumor development process, changes in tumor cell genes are an important driving factor for tumorigenesis. Recently, however, studies have shown that the tumor microenvironment, especially for cancer-associated fibroblasts (CAFs) and the infiltration of platelets into tumors, plays an essential role in the progression of human malignant disease. METHODS: In this study, we investigated the presence and prognostic role of podoplanin-expressing CAFs (CAF+), the infiltration of platelets into tumors (CD61+) and platelet count before surgery in a large sample of patients with breast cancer...
October 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28912668/the-prognostic-values-of-the-expression-of-vimentin-tp53-and-podoplanin-in-patients-with-cervical-cancer
#15
Jiaying Lin, Jiaqi Lu, Chao Wang, Xiaohong Xue
PURPOSE: Epithelial-mesenchymal transition (EMT), TP53, and Podoplanin have been implicated in the tumorigenesis and metastasis of human cancers. Nevertheless, the clinical significance of these markers in cancer patients is still not clear. In this study, we sought to determine the prognostic values of Vimentin, TP53, and Podoplanin in patients with cervical cancer. METHODS: Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot analysis were performed to determine the messenger RNA and protein expression levels of Vimentin, TP53, and Podoplanin, respectively, in cervical squamous cell carcinoma and adjacent normal cervical tissues...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28887458/increased-15-pgdh-expression-leads-to-dysregulated-resolution-responses-in-stromal-cells-from-patients-with-chronic-tendinopathy
#16
Stephanie G Dakin, Lucy Ly, Romain A Colas, Udo Oppermann, Kim Wheway, Bridget Watkins, Jesmond Dalli, Andrew J Carr
The mechanisms underpinning the failure of inflammation to resolve in diseased musculoskeletal soft tissues are unknown. Herein, we studied bioactive lipid mediator (LM) profiles of tendon-derived stromal cells isolated from healthy donors and patients with chronic tendinopathy. Interleukin(IL)-1β treatment markedly induced prostaglandin biosynthesis in diseased compared to healthy tendon cells, and up regulated the formation of several pro-resolving mediators including 15-epi-LXA4 and MaR1. Incubation of IL-1β stimulated healthy tendon cells with 15-epi-LXA4 or MaR1 down-regulated PGE2 and PGD2 production...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28882590/targeted-deletion-of-rankl-in-m-cell-inducer-cells-by-the-col6a1-cre-driver
#17
Kazuki Nagashima, Shinichiro Sawa, Takeshi Nitta, Alejandro Prados, Vasiliki Koliaraki, George Kollias, Tomoki Nakashima, Hiroshi Takayanagi
The gut-associated lymphoid tissues (GALTs), including Peyer's patches (PPs), cryptopatches (CPs) and isolated lymphoid follicles (ILFs), establish a host-microbe symbiosis by the promotion of immune reactions against gut microbes. Microfold cell inducer (MCi) cells in GALTs are the recently identified mesenchymal cells that express the cytokine RANKL and initiate bacteria-specific immunoglobulin A (IgA) production via induction of microfold (M) cell differentiation. In the previous study, the Twist2-Cre driver was utilized for gene deletion in mesenchymal cells including MCi cells...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28881047/podoplanin-expression-in-cancer-associated-fibroblasts-predicts-unfavourable-prognosis-in-patients-with-pathological-stage-ia-lung-adenocarcinoma
#18
Yasuaki Kubouchi, Yohei Yurugi, Makoto Wakahara, Tomohiko Sakabe, Tomohiro Haruki, Kanae Nosaka, Ken Miwa, Kunio Araki, Yuji Taniguchi, Tatsushi Shiomi, Hiroshige Nakamura, Yoshihisa Umekita
AIMS: Podoplanin expression in cancer-associated fibroblasts (CAFs) has been proposed as an unfavourable indicator in squamous cell carcinoma of the lung, but little is known about its clinical significance in early-stage lung adenocarcinoma. We evaluated the prognostic impact of podoplanin expression in patients with pathological stage (p-stage) IA lung adenocarcinoma as categorized by the 8(th) edition of the tumour-node-metastasis classification for lung cancer. METHODS AND RESULTS: Immunohistochemical analyses using anti-podoplanin antibody were performed on resected specimens from 158 patients with p-stage IA lung adenocarcinoma...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28878118/podoplanin-is-a-negative-regulator-of-th17-inflammation
#19
Alyssa N Nylander, Gerald D Ponath, Pierre-Paul Axisa, Mayyan Mubarak, Mary Tomayko, Vijay K Kuchroo, David Pitt, David A Hafler
Recent data indicate that there are different subpopulations of Th17 cells that can express a regulatory as opposed to an inflammatory gene signature. The transmembrane glycoprotein PDPN is critical in the development of multiple organs including the lymphatic system and has been described on T cells in mouse models of autoimmune Th17 inflammation. Here, we demonstrate that unlike in mice, PDPN+ T cells induced under classic Th17-polarizing conditions express transcription factors associated with Th17 cells but do not produce IL-17...
September 7, 2017: JCI Insight
https://www.readbyqxmd.com/read/28875528/transplantation-of-artificial-human-lymphatic-vascular-tissues-fabricated-using-a-cell-accumulation-technique-and-their-engraftment-in-mouse-tissue-with-vascular-remodeling
#20
Yoshiya Asano, Hiroshi Shimoda, Michiya Matsusaki, Mitsuru Akashi
Transplantation of engineered tissues with microvascular structure is advancing towards therapeutic application to improve the flow of blood and/or lymphatic fluids. In lymphatic disorders, transplantation of tissue-engineered lymphatic grafts can be an ideal treatment for draining excessive lymphatic fluid. In this study, we examined the transplantation of three-dimensional artificial human lymphatic network tissue (AHLT) fabricated by the cell accumulation technique into the subcutaneous tissue and fascia of mice...
September 6, 2017: Journal of Tissue Engineering and Regenerative Medicine
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