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Lymphatic endothelial cells

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https://www.readbyqxmd.com/read/28742689/lymphangiogenic-gene-expression-is-associated-with-lymph-node-recurrence-and-poor-prognosis-after-partial-hepatectomy-for-colorectal-liver-metastasis
#1
Thomas T Vellinga, Onno Kranenburg, Nicola Frenkel, Inge Ubink, Dieuwke Marvin, Klaas Govaert, Susanne van Schelven, Jeroen Hagendoorn, Inne H Borel Rinkes
OBJECTIVES: To investigate the relevance of lymphangiogenic gene expression in primary and liver metastasis of colorectal cancer (CRC) and identify determinants of lymphatic invasion. BACKGROUND: Lymphatic development promoting vascular endothelial growth factor C (VEGFC) is associated with poor outcome in primary CRC. For colorectal liver metastasis (CRLM), intrahepatic lymph invasion and lymph node metastasis are poor prognostic factors. Exact biological factors promoting lymphatic involvement remain elusive, just as the association with molecular subtypes of CRC...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28737447/pmab-52-specific-and-sensitive-monoclonal-antibody-against-cat-podoplanin-for-immunohistochemistry
#2
Shinji Yamada, Shunsuke Itai, Takuro Nakamura, Miyuki Yanaka, Noriko Saidoh, Yao-Wen Chang, Saori Handa, Hiroyuki Harada, Yumiko Kagawa, Osamu Ichii, Satoru Konnai, Mika K Kaneko, Yukinari Kato
Podoplanin (PDPN) is expressed in several normal tissues, such as lymphatic endothelial cells, podocytes of renal glomerulus, and type I alveolar cells of lung. PDPN activates platelet aggregation by binding to C-type lectin-like receptor-2 (CLEC-2) on platelet. Although monoclonal antibodies (mAbs) against human PDPN, mouse PDPN, rat PDPN, rabbit PDPN, dog PDPN, and bovine PDPN have been established, anticat PDPN (cPDPN) mAbs have not been developed. In this study, we immunized mice with Chinese hamster ovary (CHO)-K1 cell lines expressing cPDPN, and developed anti-cPDPN mAbs...
July 24, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28732089/cx47-fine-tunes-the-handling-of-serum-lipids-but-is-dispensable-for-lymphatic-vascular-function
#3
Merlijn J Meens, Issa Kutkut, Viviane Rochemont, Juan Dubrot, Fouad R Kaladji, Amélie Sabine, Oliver Lyons, Stefanie Hendrikx, Jeremiah Bernier-Latmani, Friedemann Kiefer, Alberto Smith, Stéphanie Hugues, Tatiana V Petrova, Brenda R Kwak
Mutations in the gap junction protein connexin47 (Cx47) are associated with lymphedema. However, the role of Cx47 in lymphatic pathophysiology is unknown. We demonstrate that Cx47 is expressed in lymphatic endothelial cells by whole-mount immunostaining and qPCR. To determine if Cx47 plays a role in lymphatic vessel function we analysed Cx47-/- mice. Cx47-deficiency did not affect lymphatic contractility (contractile amplitude or frequency) or lymphatic morphology (vessel diameter or number of valves). Interstitial fluid drainage or dendritic cell migration through lymphatic vessels was also not affected by Cx47-deficiency...
2017: PloS One
https://www.readbyqxmd.com/read/28728823/piezo1-channels-in-vascular-development-and-the-sensing-of-shear-stress
#4
A J Hyman, S Tumova, D J Beech
A critical point in mammalian development occurs before mid-embryogenesis when the heart starts to beat, pushing blood into the nascent endothelial lattice. This pushing force is a signal, detected by endothelial cells as a frictional force (shear stress) to trigger cellular changes that underlie the essential processes of vascular remodeling and expansion required for embryonic growth. The processes are complex and multifactorial and Piezo1 became a recognized player only 2years ago, 4years after Piezo1's initial discovery as a functional membrane protein...
2017: Current Topics in Membranes
https://www.readbyqxmd.com/read/28727496/modulation-of-vegf-induced-migration-and-network-formation-by-lymphatic-endothelial-cells-roles-of-platelets-and-podoplanin
#5
Stacey A Langan, Leyre Navarro-Núñez, Steve P Watson, Gerard B Nash
Lymphatic endothelial cells (LEC) express the transmembrane receptor podoplanin whose only known endogenous ligand CLEC-2 is found on platelets. Both podoplanin and CLEC-2 are required for normal lymphangiogenesis as mice lacking either protein develop a blood-lymphatic mixing phenotype. We investigated the roles of podoplanin and its interaction with platelets in migration and tube formation by LEC. Addition of platelets or antibody-mediated crosslinking of podoplanin inhibited LEC migration induced by vascular endothelial growth factors (VEGF-A or VEGF-C), but did not modify basal migration or the response to basic fibroblast growth factor or epidermal growth factor...
July 20, 2017: Platelets
https://www.readbyqxmd.com/read/28723974/alginate-hydrogels-allow-for-bioactive-and-sustained-release-of-vegf-c-and-vegf-d-for-lymphangiogenic-therapeutic-applications
#6
Kevin T Campbell, Dustin J Hadley, David L Kukis, Eduardo A Silva
Lymphatic dysfunction is associated with the progression of many cardiovascular disorders due to their role in maintaining tissue fluid homeostasis. Promoting new lymphatic vessels (lymphangiogenesis) is a promising strategy to reverse these cardiovascular disorders via restoring lymphatic function. Vascular endothelial growth factor (VEGF) members VEGF-C and VEGF-D are both potent candidates for stimulating lymphangiogenesis, though maintaining spatial and temporal control of these factors represents a challenge to developing efficient therapeutic lymphangiogenic applications...
2017: PloS One
https://www.readbyqxmd.com/read/28718185/congenital-pulmonary-lymphangiectasia-a-disorder-not-only-of-fetoneonates
#7
Shi-Min Yuan
Congenital pulmonary lymphangiectasia (CPL) is a rare developmental disorder of the lung, characterized by dilation of pulmonary subpleural, interlobar, perivascular and peribronchial lymphatics. The incidence of CPL among stillborn and neonates was estimated to be <1%. The etiology of CPL is unknown. However, it has been suspected to be of a genetic background. Recent basic studies revealed that it might be caused by the FOXC2, Vegfr-3 and integrin α9β1gene mutations. A clinical diagnosis of CPL can be made much easier in full-term neonates who present with respiratory distress, pleural (especially chylous) effusions with or without generalized edema...
July 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28713613/the-use-of-human-mature-cystic-ovarian-teratoma-as-a-model-to-study-the-development-of-human-lymphatics
#8
Rashid Al-Jomard, Zouhair Amarin
The angiogenic theory to the development of human lymphatics is not clear. The objective of this study was to investigate the development of human lymphatics. Semi-thin and thin paraffin sections from human mature cystic ovarian teratoma tissues were studied using light and electron microscopy. Lymphatics were formed by the differentiation of mesenchymal cells that gradually acquired morphological features of endothelial cells. It is suggested that in human mature cystic ovarian teratoma the lymphatic endothelium develops from mesenchymal cells, and not from cells derived from mature endothelium of a preexisting vein or lymphatic...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28709916/lymphatic-invasion-and-the-shields-index-in-predicting-melanoma-metastases
#9
Zorica Špirić, Mirela Erić, Živka Eri
INTRODUCTION: Findings of the prognostic significance of lymphatic invasion are contradictory. To determine an as efficient cutaneous melanoma metastasis predictor as possible, Shields et al. created a new prognostic index. This study aimed to examine whether the lymphatic invasion analysis and the Shields index calculation can be used in predicting lymph node status in patients with cutaneous melanoma. METHODS: Lymphatic invasion of 100 melanoma specimens was detected by dual immunohistochemistry staining for the lymphatic endothelial marker D2-40 and melanoma cell S-100 protein...
June 13, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28709801/lymphatic-endothelial-cells-control-initiation-of-lymph-node-organogenesis
#10
Lucas Onder, Urs Mörbe, Natalia Pikor, Mario Novkovic, Hung-Wei Cheng, Thomas Hehlgans, Klaus Pfeffer, Burkhard Becher, Ari Waisman, Thomas Rülicke, Jennifer Gommerman, Christopher G Mueller, Shinichiro Sawa, Elke Scandella, Burkhard Ludewig
Lymph nodes (LNs) are strategically situated throughout the body at junctures of the blood vascular and lymphatic systems to direct immune responses against antigens draining from peripheral tissues. The current paradigm describes LN development as a programmed process that is governed through the interaction between mesenchymal lymphoid tissue organizer (LTo) cells and hematopoietic lymphoid tissue inducer (LTi) cells. Using cell-type-specific ablation of key molecules involved in lymphoid organogenesis, we found that initiation of LN development is dependent on LTi-cell-mediated activation of lymphatic endothelial cells (LECs) and that engagement of mesenchymal stromal cells is a succeeding event...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28709135/inhibition-of-lymphangiogenesis-impairs-antitumour-effects-of-photodynamic-therapy-and-checkpoint-inhibitors-in-mice
#11
Angelika Muchowicz, Malgorzata Wachowska, Joanna Stachura, Katarzyna Tonecka, Magdalena Gabrysiak, Dominika Wołosz, Zofia Pilch, Witold W Kilarski, Louis Boon, Tomasz J Klaus, Jakub Golab
Photodynamic therapy (PDT) has been shown to destroy tumour-associated lymphatic vessels. Therefore, we sought to investigate the functional outcomes of PDT-mediated damage to the lymphatic vessels. We observed that PDT with verteporfin, completely but transiently, blocks the functional lymphatic drainage in the orthotopic mammary tumour models. Sustained inhibition of lymphatic vessels regeneration induced by lenalidomide or the soluble form of vascular endothelial growth factor receptor 3 (sVEGFR3) that neutralises lymphangiogenic vascular endothelial growth factor C (VEGF-C), significantly impaired antitumour efficacy of PDT...
July 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28706782/immunohistochemical-evaluation-of-podoplanin-in-odontogenic-tumours-cysts-using-anti-human-podoplanin-antibody
#12
Namrata Singhal, Nitin Khanduri, Deepak Kurup, Brijesh Gupta, Pranjan Mitra, Roshani Chawla
BACKGROUND: Odontogenic Cysts & tumors originate through some aberration from the normal pattern of odontogenesis. Ameloblastoma is one of the most frequent intraosseous odontogenic tumors. However it is no longer appropriate to use the diagnosis of ameloblastoma without specifying the type. Varied-clinical entities of ameloblastoma differ in their biologic behaviour. Odontogenic cysts like dentigerous and radicular cysts are less aggressive in nature than odontogenic tumors. Recently, podoplanin commonly used as a lymphatic endothelial marker in cancers has recently been found to play a possible role in odontogenic tumorigenesis also...
May 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28705793/dachsous1-fat4-signaling-controls-endothelial-cell-polarization-during-lymphatic-valve-morphogenesis
#13
Francoise Pujol, Tina Hodgson, Ines Martinez-Corral, Anne-Catherine Prats, Danelle Devenport, Masatoshi Takeichi, Elisabeth Genot, Taija Mäkinen, Philippa Francis-West, Barbara Garmy-Susini, Florence Tatin
OBJECTIVE: The purpose of this study was to investigate the role of Fat4 and Dachsous1 signaling in the lymphatic vasculature. APPROACH AND RESULTS: Phenotypic analysis of the lymphatic vasculature was performed in mice lacking functional Fat4 or Dachsous1. The overall architecture of lymphatic vasculature is unaltered, yet both genes are specifically required for lymphatic valve morphogenesis. Valve endothelial cells (Prox1(high) cells) are disoriented and failed to form proper valve leaflets...
July 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28699895/a-role-for-brg1-in-the-regulation-of-genes-required-for-development-of-the-lymphatic-system
#14
Ajeet Pratap Singh, Julie Foley, Arpit Tandon, Dhiral Phadke, H Karimi Kinyamu, Trevor K Archer
Lymphatic vasculature is an important part of the cardiovascular system with multiple functions, including regulation of the return of interstitial fluid (lymph) to the bloodstream, immune responses, and fat absorption. Consequently, lymphatic vasculature defects are involved in many pathological processes, including tumor metastasis and lymphedema. BRG1 is an important player in the developmental window when the lymphatic system is initiated. In the current study, we used tamoxifen inducible Rosa26CreERT2-BRG1floxed/floxed mice that allowed temporal analysis of the impact of BRG1 inactivation in the embryo...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28694027/exploiting-lymphatic-vessels-for-immunomodulation-rationale-opportunities-and-challenges
#15
Katharina Maisel, Maria Stella Sasso, Lambert Potin, Melody A Swartz
Lymphatic vessels are the primary route of communication from peripheral tissues to the immune system; as such, they represent an important component of local immunity. In addition to their transport functions, new immunomodulatory roles for lymphatic vessels and lymphatic endothelial cells have come to light in recent years, demonstrating that lymphatic vessels help shape immune responses in a variety of ways: promoting tolerance to self-antigens, archiving antigen for later presentation, dampening effector immune responses, and resolving inflammation, among others...
July 7, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28687807/efficient-activation-of-the-lymphangiogenic-growth-factor-vegf-c-requires-the-c-terminal-domain-of-vegf-c-and-the-n-terminal-domain-of-ccbe1
#16
Sawan Kumar Jha, Khushbu Rauniyar, Terhi Karpanen, Veli-Matti Leppänen, Pascal Brouillard, Miikka Vikkula, Kari Alitalo, Michael Jeltsch
The collagen- and calcium-binding EGF domains 1 (CCBE1) protein is necessary for lymphangiogenesis. Its C-terminal collagen-like domain was shown to be required for the activation of the major lymphangiogenic growth factor VEGF-C (Vascular Endothelial Growth Factor-C) along with the ADAMTS3 (A Disintegrin And Metalloproteinase with Thrombospondin Motifs-3) protease. However, it remained unclear how the N-terminal domain of CCBE1 contributed to lymphangiogenic signaling. Here, we show that efficient activation of VEGF-C requires its C-terminal domain both in vitro and in a transgenic mouse model...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28680444/lymphangiogenesis-in-oral-squamous-cell-carcinoma-correlation-with-vegf-c-expression-and-lymph-node-metastasis
#17
Manar A Abdul-Aziz, Amina K Amin, Dalia H El-Rouby, Olfat G Shaker
BACKGROUND: Oral squamous cell carcinoma (OSCC) is the most common oral malignancy that preferentially spreads to the cervical lymph node which, when involved, complicates the anticancer therapy and threatens the patient life. It was suggested that lymph node metastasis may be facilitated by lymphangiogenesis. VEGF-C is one of the most important lymphangiogenic inducers that promotes the lymphatic vessels growth and supports the survival of adult lymphatic endothelial cells. METHODS: Lymphatic vessels density (LVD) and LV morphometry were digitally evaluated using D2-40...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28672935/next-generation-sequencing-reveals-lymph-node-metastasis-associated-genetic-markers-in-colorectal-cancer
#18
Ni Xie, Yujiang Yao, Lili Wan, Ting Zhu, Litao Liu, Jianhui Yuan
Colorectal cancer is the third most prevalent type of cancer in the United States. Early diagnosis of lymph node metastases is essential to improve the prognosis for patients with colorectal cancer. Therefore, the present study aimed to screen genetic markers, including single nucleotide polymorphisms (SNPs), copy number variations (CNVs) and mRNA expression, associated with lymph node metastases in patients with colorectal cancer to enable an early diagnosis. Targeted next-generation sequencing was applied to capture SNPs and CNVs in tumor-related candidate genes within tumor tissues from 39 colorectal cancer patients; reverse transcription-quantitative polymerase chain reaction was used to detect the specific mRNA level of tumor-related candidate genes, including vascular endothelial growth factor C, cyclin-A2, Interleukin-2, ATP-binding cassette sub-family G member 2, epidermal growth factor (EGF) and nuclear factor kappa B subunit 1 (NFKB1) on chromosome 4...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28670361/the-effect-of-high-sox3-expression-on-lymphangiogenesis-and-lymph-node-metastasis-in-esophageal-squamous-cell-carcinoma
#19
Yi-Feng Zheng, Kun Li, Qing-Yong Cai, Lie Yang, Qun-You Tan, Wei Guo, Ru-Wen Wang
OBJECTIVE: This study aimed to investigate the effect of Sox3 expression on biological behaviors of esophageal squamous cell carcinoma (ESCC) and explore its possible mechanism. METHODS: ESCC cell lines that highly expressed Sox3 were selected and transfected with lentivirus carrying sox3 siRNA to establish ESCC cell lines which expressed Sox3 of different levels. Using in vitro experiments including cell invasion, cell scratch, cell proliferation and tube formation of lymphatic endothelial cells, as well as an in vivo experiment of axillary lymph node metastasis in a nude mouse model of a xenotransplanted tumor, the effect of Sox3 expression variation on lymphangiogenesis and lymph node metastasis in ESCC cells was investigated...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28665157/sex-related-differences-in-autoimmune-induced-lung-lesions-in-mrl-mpj-fas-lpr-mice-are-mediated-by-the-development-of-mediastinal-fat-associated-lymphoid-clusters
#20
Yaser Hosny Ali Elewa, Osamu Ichii, Yasuhiro Kon
MRL/MpJ-Fas(lpr) (lpr) mice are a model for autoimmune diseases such as systemic lupus erythematosus (SLE). These diseases mainly affect women, with a 10:1 female-to-male ratio, and cause pleuropulmonary lesions. We previously revealed a correlation between mediastinal fat-associated lymphoid cluster (MFALC) development and cellular infiltration in the lungs of lpr male mice; however, we did not report on MFALCs in females. The purpose of this investigation was to reveal sex-related differences in MFALCs in lpr mice...
June 30, 2017: Autoimmunity
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