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Lymphangiogenesis

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https://www.readbyqxmd.com/read/29452214/pgrn-promotes-lymphangiogenesis-through-vegf-c-and-is-an-independent-risk-factor-in-human-esophageal-cancers
#1
Guanhua Li, Taotao Dong, Dong Yang, Aiqin Gao, Judong Luo, Hongyan Yang, Linlin Wang
Lymph node metastasis is one of the most important predictor of the prognosis for esophageal cancer (EC) patients. Yet, the mechanism underlying the lymph node metastasis is largely unknown. Progranulin (PGRN) is shown to be highly expressed in various types of cancers and could promote the angiogenesis and epithelial mesenchymal transition (EMT) of cancer cells in previous studies. However, the expression status of PGRN and its effects on the lymphangiogenesis in EC is largely unclear. In this study, we show for the first time that PGRN is expressed in EC tissue samples and cell lines and could promote the expression of VEGF-C in vitro, a well-known lymphangiogenesis inducer, through the putative signaling transducers p-ERK and p-AKT...
February 13, 2018: Human Pathology
https://www.readbyqxmd.com/read/29447908/primary-lymphedema-and-other-lymphatic-anomalies-are-associated-with-22q11-2-deletion-syndrome
#2
Marta Unolt, Jessica Barry, Maria Cristina Digilio, Bruno Marino, Anne Bassett, Erwin Oechslin, David W Low, Jean B Belasco, Staci Kallish, Kathleen Sullivan, Elaine H Zackai, Donna M McDonald-McGinn
BACKGROUND: Lymphedema is an abnormal accumulation of interstitial fluid within the tissues. Primary lymphedema is caused by aberrant lymphangiogenesis and it has been historically classified based on age at presentation. Although most cases are sporadic, primary lymphedema may be familial or present in association with chromosomal abnormalities and syndromic disorders. To the best of our knowledge, primary lymphedema has never been described in patients with 22q11.2 deletion syndrome...
February 12, 2018: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29438257/recent-insights-into-vascular-development-from-studies-in-zebrafish
#3
Ryota L Matsuoka, Didier Y R Stainier
PURPOSE OF REVIEW: Zebrafish has provided a powerful platform to study vascular biology over the past 25 years, owing to their distinct advantages for imaging and genetic manipulation. In this review, we summarize recent progress in vascular biology with particular emphasis on vascular development in zebrafish. RECENT FINDINGS: The advent of transcription activator-like effector nuclease and clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 genome-editing technologies has dramatically facilitated reverse genetic approaches in zebrafish, as in other models...
February 12, 2018: Current Opinion in Hematology
https://www.readbyqxmd.com/read/29429150/mir-199a-b-5p-inhibits-lymphangiogenesis-by-targeting-discoidin-domain-receptor-1-in-corneal-injury
#4
Sooeun Oh, Minkoo Seo, Jun-Sub Choi, Choun-Ki Joo, Suk Kyeong Lee
Discoidin domain receptor 1 (DDR1) is involved in tumorigenesis and angiogenesis. However, its role in lymphangiogenesis has been unknown. Here, we tested whether downregulation of DDR1 expression by miR-199a/b can suppress lymphangiogenesis. We also aimed to identify miRNA target site(s) in the 3' untranslated region (UTR) of DDR1. Transfection with miR-199a/b-5p mimics reduced expression of DDR1 and tube formation in primary human dermal lymphatic endothelial cells, whereas miR-199a/b-5p inhibitors showed the opposite effects...
February 2, 2018: Molecules and Cells
https://www.readbyqxmd.com/read/29427637/ceacam1-resists-hypoxia-induced-inhibition-of-tube-formation-of-human-dermal-lymphatic-endothelial-cells
#5
Qi Xie, Xiaocui Chen, Yinghua Xu, Jing Liang, Fufang Wang, Ju Liu
Tube formation is one of the fundamental events required by angiogenesis and lymphangiogenesis. To date, there is little knowledge on the effects of hypoxia on tube formation of human dermal lymphatic endothelial cells (HDLECs). In this study, we found that tube formation of HDLECs was inhibited under hypoxic condition with decreased expressions of VEGF-D, CEACAM1 and Prox1 genes. However, hypoxia-induced inhibition of tube formation of HDLECs was reversed by conditional media from hypoxic tumor cells. After knockdown of CEACAM1 by siRNA transfection, tube formation of HDLECs was increased with elevated Prox1 expression, suggesting that CEACAM1 downregulates Prox1 and plays an inhibitory role in tube formation of HDLECs...
February 7, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29409810/foxf2-deficiency-permits-basal-like-breast-cancer-cells-to-form-lymphangiogenic-mimicry-by-enhancing-the-response-of-vegf-c-vegfr3-signaling-pathway
#6
Qing-Shan Wang, Rui He, Fan Yang, Li-Juan Kang, Xiao-Qing Li, Li Fu, Baocun Sun, Yu-Mei Feng
Lymphatic metastasis is the main route of breast cancer metastasis. It is known that lymphangiogenesis facilitates lymphatic metastasis through vascular endothelial growth factor-C (VEGF-C)/VEGF receptor 3 (VEGFR3) pathway-linked interactions between the tumor and its microenvironment. Here, we report a novel mechanism of lymphatic metastasis by which aggressive basal-like breast cancer (BLBC) cells form lymphatic vessel-like structures that are identified by the positive expression of lymphatic endothelial cell markers lymphatic vessel endothelial hyaluronan receptor 1 (LYVE-1), podoplanin, and VEGFR3, and termed as lymphangiogenic mimicry (LM), for the first time...
January 30, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29397867/structure-and-function-of-vascular-endothelial-growth-factor-and-its-receptor-system
#7
Seong Ah Park, Mi Suk Jeong, Ki-Tae Ha, Se Bok Jang
Vascular endothelial growth factor and its receptor (VEGF-VEGFR) system play a critical role in the regulation of angiogenesis and lymphangiogenesis in vertebrates. Each of the VEGF has specific receptors, which it activates by binding to the extracellular domain of the receptors, and, thus, regulates the angiogenic balance in the early embryonic and adult stages. However, de-regulation of the VEGF-VEGFR implicates directly in various diseases, particularly cancer. Moreover, tumor growth needs a dedicated blood supply to provide oxygen and other essential nutrients...
February 5, 2018: BMB Reports
https://www.readbyqxmd.com/read/29385063/anti-lymphangiogenesis-components-from-zoanthid-palythoa-tuberculosa
#8
Shu-Rong Chen, Shih-Wei Wang, Chien-Jung Su, Hao-Chun Hu, Yu-Liang Yang, Chi-Ting Hsieh, Chia-Chi Peng, Fang-Rong Chang, Yuan-Bin Cheng
Three new compounds, tuberazines A-C (1-3), and eleven known compounds (4-14) were obtained from the ethanolic extract of Taiwanese zoanthid Palythoa tuberculosa. Compounds 1-4 are rare marine natural products with a pyrazine moiety, and compound 5 is a tricyclic tryptamine derivative isolated from nature for the first time. The structures of all isolated metabolites were determined by analyzing their IR, Mass, NMR, and UV spectrometric data. The absolute configuration of 1 was confirmed by comparing the trend of experimental electronic circular dichroism (ECD) with calculated ECD spectra...
January 31, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29378756/lymphangiogenesis-in-chronic-rejection-and-coronary-allograft-vasculopathy-an-emerging-diagnostic-and-therapeutic-target
#9
EDITORIAL
H Scott Baldwin, Stavros G Drakos
No abstract text is available yet for this article.
January 30, 2018: Circulation
https://www.readbyqxmd.com/read/29375714/carcinoma-associated-fibroblasts-derived-from-oral-squamous-cell-carcinoma-promote-lymphangiogenesis-via-c-met-pi3k-akt-in-vitro
#10
Pan Gao, Chunjie Li, Zheng Chang, Xiaoyi Wang, Ming Xuan
Carcinoma-associated fibroblasts (CAFs) are dominant components of the tumor microenvironment (TME) that promote the development, progression and metastasis of cancer. c-Met is a receptor of the hepatocyte growth factor (HGF), which is involved in lymphangiogenesis. Currently, the roles of CAFs during lymphangiogenesis are unknown. It has been hypothesized that CAFs contribute to lymphangiogenesis of oral squamous cell carcinoma (OSCC) via a HGF/c-Met complex. The expression of HGF in OSCC was determined using CAFs derived from OSCC tissue and it was demonstrated that HGF is overexpressed in OSCC-derived CAFs...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29375705/novel-function-of-e26-transformation-specific-domain-containing-protein-elk3-in-lymphatic-endothelial-cells
#11
Ji-In Park, Kwang-Soo Kim, Sun-Young Kong, Kyung-Soon Park
Lymphatic endothelial cells (LEC) are major components of the tumor microenvironment and, due to the relative leakiness of lymphatic vessels compared with blood vessels, are essential for tumor dissemination and metastasis. In the present study, small interfering RNA-mediated suppression of E26 transformation-specific domain-containing protein Elk-3 (ELK3) inhibited the proliferation, migration and tube-forming ability of LEC. Suppression of ELK3 decreased vascular endothelial-cadherin expression levels and increased the phosphorylation of β-catenin...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29374693/association-of-eif4e-and-sparc-expression-with-lymphangiogenesis-and-lymph-node-metastasis-in-hypopharyngeal-cancer
#12
Benjamin Philipp Ernst, Caja Mikstas, Timo Stöver, Roland Stauber, Sebastian Strieth
BACKGROUND/AIM: Head and neck squamous cell carcinomas (HNSCC) are characterized by aggressiveness, early recurrence and lymph node metastasis. Therefore, there is an urgent need to identify new biomarkers and drug targets. MATERIALS AND METHODS: Neck dissection specimens from 11 patients diagnosed with hypopharyngeal cancer were analyzed for their lymphatic vessel density (LVD) by lymphatic vessel endothelial hyaluronan receptor 1 (LYVE-1) immunostaining, expression of eukaryotic initiation factor 4E (eIF4E) and levels of secreted protein acidic and rich in cysteine (SPARC) using immunoblot analysis...
February 2018: Anticancer Research
https://www.readbyqxmd.com/read/29371975/the-role-of-prospero-homeobox-1-prox1-expression-in-follicular-thyroid-carcinoma-cells
#13
Magdalena Rudzinska, Joanna K Ledwon, Damian Gawel, Justyna Sikorska, Barbara Czarnocka
The prospero homeobox 1 (Prox1) transcription factor is a key player during embryogenesis and lymphangiogenesis. Altered Prox1 expression has been found in a variety of human cancers, including papillary thyroid carcinoma (PTC). Interestingly, Prox1 may exert tumor suppressive or tumor promoting effect, depending on the tissue context. In this study, we have analyzed Prox1 expression in normal and malignant human thyroid carcinoma cell lines. Moreover, we determined the effect of Prox1 silencing and overexpression on the cellular processes associated with the metastatic potential of tumor cells: proliferation, migration, invasion, apoptosis and anchorage-independent growth, in the follicular thyroid carcinoma (FTC) FTC-133 cell line...
December 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/29358379/context-dependent-functions-of-angiopoietin-2-are-determined-by-the-endothelial-phosphatase-veptp
#14
Tomokazu Souma, Benjamin R Thomson, Stefan Heinen, Isabel Anna Carota, Shinji Yamaguchi, Tuncer Onay, Pan Liu, Asish K Ghosh, Chengjin Li, Vera Eremina, Young-Kwon Hong, Aris N Economides, Dietmar Vestweber, Kevin G Peters, Jing Jin, Susan E Quaggin
The angiopoietin (ANGPT)-TIE2/TEK signaling pathway is essential for blood and lymphatic vascular homeostasis. ANGPT1 is a potent TIE2 activator, whereas ANGPT2 functions as a context-dependent agonist/antagonist. In disease, ANGPT2-mediated inhibition of TIE2 in blood vessels is linked to vascular leak, inflammation, and metastasis. Using conditional knockout studies in mice, we show TIE2 is predominantly activated by ANGPT1 in the cardiovascular system and by ANGPT2 in the lymphatic vasculature. Mechanisms underlying opposing actions of ANGPT2 in blood vs...
January 22, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29355840/long-noncoding-rna-blacat2-promotes-bladder-cancer-associated-lymphangiogenesis-and-lymphatic-metastasis
#15
Wang He, Guangzheng Zhong, Ning Jiang, Bo Wang, Xinxiang Fan, Changhao Chen, Xu Chen, Jian Huang, Tianxin Lin
The prognosis for bladder cancer patients with lymph node (LN) metastasis is dismal and only minimally improved by current treatment modalities. Elucidation of the molecular mechanisms that underlie LN metastasis may provide clinical therapeutic strategies for LN-metastatic bladder cancer. Here, we report that a long noncoding RNA LINC00958, which we have termed bladder cancer-associated transcript 2 (BLACAT2), was markedly upregulated in LN-metastatic bladder cancer and correlated with LN metastasis. Overexpression of BLACAT2 promoted bladder cancer-associated lymphangiogenesis and lymphatic metastasis in both cultured bladder cancer cell lines and mouse models...
January 22, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29351397/acute-small-intestinal-inflammation-results-in-persistent-lymphatic-alterations
#16
Sonia Rehal, Matthew Stephens, Simon Roizes, Shan Liao, Pierre-Yves von der Weid
Inflammatory bowel disease (IBD) has a complex pathophysiology with limited treatments. Structural and functional changes in the intestinal lymphatic system have been associated with the disease, with increased risk of IBD occurrence linked to a history of acute intestinal injury. To examine the potential role of the lymphatic system in inflammation recurrence, we evaluated morphological and functional changes in mouse mucosal and mesenteric lymphatic vessels, and within the mesenteric lymph nodes during acute ileitis caused by a 7-day treatment with dextran sodium sulfate (DSS)...
December 14, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29350326/oxyresveratrol-prevents-murine-h22-hepatocellular-carcinoma-growth-and-lymph-node-metastasis-via-inhibiting-tumor-angiogenesis-and-lymphangiogenesis
#17
Yuanqi Liu, Wei Ren, Yang Bai, Lihong Wan, Xiaodong Sun, Yin Liu, Wenbi Xiong, Yuan-Yuan Zhang, Liming Zhou
The purpose of this study was to investigate the effects and mechanisms of oxyresveratrol (Oxyres) on hepatocellular carcinoma (HCC) in vitro and in vivo. The MTT and Transwell assays were performed to investigate the effects of Oxyres on cell proliferation and migration of two HCC cell lines, QGY-7701 and SMMC-7721 cells. H22 cells were subcutaneously injected into hind foot pads of 70 male mice to establish a lymph node metastasis model. These mice were randomly divided into seven groups as follows, control group, HCC group, Oxyres 20 mg/kg group, Oxyres 40 mg/kg group, Oxyres 60 mg/kg group, Resveratrol (Res) group, and Adriamycin (ADM) group...
January 19, 2018: Journal of Natural Medicines
https://www.readbyqxmd.com/read/29346540/blood-and-lymphatic-vessels-contribute-to-the-impact-of-the-immune-microenvironment-on-clinical-outcome-in-non-small-cell-lung-cancer
#18
Giovanna Armani, Denise Madeddu, Giulia Mazzaschi, Giovanni Bocchialini, Francesco Sogni, Caterina Frati, Bruno Lorusso, Angela Falco, Costanza Annamaria Lagrasta, Stefano Cavalli, Chiara Mangiaracina, Rocchina Vilella, Gabriella Becchi, Letizia Gnetti, Emilia Corradini, Eugenio Quaini, Konrad Urbanek, Matteo Goldoni, Paolo Carbognani, Luca Ampollini, Federico Quaini
OBJECTIVES: Lymphangiogenesis plays a critical role in the immune response, tumour progression and therapy effectiveness. The aim of this study was to determine whether the interplay between the lymphatic and the blood microvasculature, tumour-infiltrating lymphocytes and the programmed death 1 (PD-1)/programmed death ligand 1 (PD-L1) immune checkpoint constitutes an immune microenvironment affecting the clinical outcome of patients with non-small-cell lung cancer. METHODS: Samples from 50 squamous cell carcinomas and 42 adenocarcinomas were subjected to immunofluorescence to detect blood and lymphatic vessels...
January 15, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29346014/role-of-the-lymphatic-system-in-the-pathogenesis-of-hypertension-in-humans
#19
Angelika Chachaj, Bartosz Puła, Mariusz Chabowski, Jędrzej Grzegrzółka, Ewa Szahidewicz-Krupska, Maciej Karczewski, Dariusz Janczak, Piotr Dzięgiel, Marzenna Podhorska-Okołów, Grzegorz Mazur, Andrzej Gamian, Andrzej Szuba
BACKGROUND: Recent studies, mainly on animal models, have suggested that negatively charged glycosaminoglycans, macrophages, and lymph vessels in the skin interstitium may serve as extrarenal control of sodium balance and blood pressure. The aim of the study was to prove the hypothesis that skin interstitium has a role in the pathogenesis of hypertension in humans. METHODS AND RESULTS: We have examined skin biopsies in 91 patients from the department of surgery who had elective surgery with abdominal skin incision: 43 were hypertensive, 14 had resistant hypertension, and 34 with normal blood pressure as control group (median patients' age in these groups estimated accordingly 64 vs...
January 18, 2018: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29344214/association-of-the-rs2071559-t-c-polymorphism-with-lymphatic-metastasis-in-patients-with-nasopharyngeal-carcinoma
#20
Kai Hu, Xiujing Xie, Rensheng Wang, Fang Wu, Yong Zhang
Vascular endothelial growth factor (VEGF) and its receptor, VEGFR2, serve a critical role in angiogenesis and lymphangiogenesis, which are involved in the initiation and progression of malignancies. Specific single nucleotide polymorphisms of VEGF and VEGFR2 have been shown to modulate gene expression and influence malignancy aggressiveness. The aim of the present study was to determine whether the VEGFR2 rs2071559 (T/C) polymorphism is associated with the risk of developing nasopharyngeal carcinoma (NPC) and the aggressiveness of NPC in a southern Chinese population...
December 2017: Oncology Letters
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