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Tenascin integrin

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https://www.readbyqxmd.com/read/29728077/neuropilin-1-promotes-the-oncogenic-tenascin-c-integrin-%C3%AE-3-pathway-and-modulates-chemoresistance-in-breast-cancer-cells
#1
Adviti Naik, Aida Al-Yahyaee, Nada Abdullah, Juda-El Sam, Noura Al-Zeheimi, Mahmoud W Yaish, Sirin A Adham
BACKGROUND: Neuropilin-1 (NRP-1), a non-tyrosine kinase glycoprotein receptor, is associated with poor prognosis breast cancer, however transcriptomic changes triggered by NRP-1 overexpression and its association with chemoresistance in breast cancer have not yet been explored. METHODS: BT-474 NRP-1 variant cells were generated by stable overexpression of NRP-1 in the BT-474 breast cancer cell line. RNA sequencing and qRT-PCR were conducted to identify differentially expressed genes...
May 5, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29674419/comparative-study-of-the-novel-rgd-motif-containing-itg%C3%AE-v%C3%AE-6-binding-peptides-sflap3-and-sfitgv6-for-diagnostic-application-in-hnscc
#2
Saskia Roesch, Thomas Lindner, Max Sauter, Anastasia Loktev, Paul Flechsig, Martin Müller, Walter Mier, Rolf Warta, Gerhard Dyckhoff, Christel Herold-Mende, Uwe Haberkorn, Annette Altmann
Alpha v beta 6 (αvβ6) integrin is overexpressed by several carcinomas, and thus considered as target for diagnostic imaging and anti-cancer therapies. Recently, we presented SFITGv6 as a novel potential tracer for imaging and targeted therapy of αvβ6 integin-positive carcinomas. Here, we analyzed affinity and specificity of five native αvβ6 integrin-specific binders in comparison to SFITGv6. Methods: Sunflower trypsin inhibitor (SFTI)-1-based peptides containing arginine-glycine-aspartic acid (RGD) motif-spanning octamers of fibronectin (SFFN1), tenascin C (SFTNC), vitronectin (SFVTN), and latency-associated peptides (LAP) 1 (SFLAP1), and 3 (SFLAP3) were synthesized and their binding potential to αvβ6 integrin-expressing head and neck squamous cell carcinoma (HNSCC) cell lines was evaluated...
April 19, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29584696/%C3%AE-4-and-%C3%AE-6-integrin-expression-is-associated-with-the-subclassification-and-clinicopathological-features-of-intrahepatic-cholangiocarcinoma
#3
Yurie Soejima, Miho Takeuchi, Takumi Akashi, Motoji Sawabe, Toshio Fukusato
Intrahepatic cholangiocarcinoma (ICC) is a heterogeneous group of cancers of the intrahepatic biliary tract. However, few studies have evaluated integrin expression according to an ICC subgroup. We immunohistochemically investigated α6β4 (β4) and αvβ6 (β6) integrin expressions in 48 ICCs, and evaluated their relationship with clinical and pathological parameters and ligand expression, as well as transforming growth factor (TGF)-β1. β4 and β6 expressions were detected in 46 (96%) and 35 (73%) ICC cases, respectively...
March 27, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29529488/amelioration-of-collagen-antibody-induced-arthritis-in-mice-by-an-antibody-directed-against-the-fibronectin-type-iii-repeats-of-tenascin-c-targeting-fibronectin-type-iii-repeats-of-tenascin-c-in-rheumatoid-arthritis
#4
Brij Bhushan Mehta, Anil Tiwari, Saniya Sharma, Ashu Shukla, Maryada Sharma, Rakesh K Vasishta, Ramesh K Sen, Aman Sharma, Manni Luthra-Guptasarma
Tenascin-C (TN-C) levels are elevated in the synovial tissue and fluid, as well as cartilage of rheumatoid arthritis (RA) patients. In addition, the presence of TN-C fragments has also been documented in arthritic cartilage. We have previously shown that a single chain variable fragment antibody (TN64), directed against the fibronectin type III repeats 1-5 (TNfnIII 1-5) of TN-C, effectively inhibits fibrotic pathology. Given that fibrosis results from chronic inflammation, and the fact that increased levels of TN-C in the synovial fluid of patients with RA contributes to synovial inflammation and joint destruction, we aimed to investigate the role of TNfnIII 1-5 region of TN-C in RA pathogenesis...
May 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29369695/integrin-heterodimers-expressed-on-the-surface-of-porcine-spermatogonial-stem-cells
#5
Min Hee Park, Min Seong Kim, Jung Im Yun, Jung Hoon Choi, Eunsong Lee, Seung Tae Lee
To date, in vitro culture systems able to sufficiently expand the small population of spermatogonial stem cells (SSCs), a tool for the development of sperm-mediated gene transfer techniques in transgenic pigs, in the porcine seminiferous tubule have not been reported. Therefore, as a step toward engineering a noncellular niche to support the in vitro maintenance of porcine SSC self-renewal, we investigated the types of integrin heterodimers that are expressed and functional on their membrane. The α and β integrin subunit protein expressions were analyzed using immunocytochemistry and fluorescence immunoassay, and the function of integrin heterodimers was confirmed by attachment and antibody inhibition assays...
March 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29330144/kindlin-1-promotes-pulmonary-breast-cancer-metastasis
#6
Sana Sarvi, Hitesh Patel, Jun Li, Georgia L Dodd, Helen Creedon, Morwenna Muir, Jocelyn Ward, John C Dawson, Martin Lee, Jayne Culley, Donald M Salter, Andrew H Sims, Adam Byron, Valerie G Brunton
In breast cancer, increased expression of the cytoskeletal adaptor protein Kindlin-1 has been linked to increased risks of lung metastasis, but the functional basis is unknown. Here, we show that in a mouse model of polyomavirus middle T antigen-induced mammary tumorigenesis, loss of Kindlin-1 reduced early pulmonary arrest and later development of lung metastasis. This phenotype relied on the ability of Kindlin-1 to bind and activate β integrin heterodimers. Kindlin-1 loss reduced α4 integrin-mediated adhesion of mammary tumor cells to the adhesion molecule VCAM-1 on endothelial cells...
March 15, 2018: Cancer Research
https://www.readbyqxmd.com/read/29259017/tenascin-c-promotes-tumor-cell-migration-and-metastasis-through-integrin-%C3%AE-9%C3%AE-1-mediated-yap-inhibition
#7
Zhen Sun, Anja Schwenzer, Tristan Rupp, Devadarssen Murdamoothoo, Rolando Vegliante, Olivier Lefebvre, Annick Klein, Thomas Hussenet, Gertraud Orend
Tenascin-C is an extracellular matrix molecule that drives progression of many types of human cancer, but the basis for its actions remains obscure. In this study, we describe a cell-autonomous signaling mechanism explaining how tenascin-C promotes cancer cell migration in the tumor microenvironment. In a murine xenograft model of advanced human osteosarcoma, tenascin-C and its receptor integrin α9β1 were determined to be essential for lung metastasis of tumor cells. We determined that activation of this pathway also reduced tumor cell-autonomous expression of target genes for the transcription factor YAP...
February 15, 2018: Cancer Research
https://www.readbyqxmd.com/read/29065446/the-roles-of-matricellular-proteins-in-oncogenic-virus-induced-cancers-and-their-potential-utilities-as-therapeutic-targets
#8
REVIEW
Naoyoshi Maeda, Katsumi Maenaka
Matricellular proteins differ from other classical extracellular matrix proteins; for instance, they are transiently expressed as soluble proteins rather than being constitutively expressed in pathological conditions, such as acute viral infections. Accumulating studies have revealed that matricellular proteins, including osteopontin and tenascin-C, both of which interact with integrin heterodimers, are involved in inflammatory diseases, autoimmune disorders, and cancers. The concentrations of these matricellular proteins are elevated in the plasma of patients with certain types of cancers, indicating that they play important roles in oncogenesis...
October 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29038247/constitutive-activation-of-integrin-%C3%AE-9-augments-self-directed-hyperplastic-and-proinflammatory-properties-of-fibroblast-like-synoviocytes-of-rheumatoid-arthritis
#9
Takashi Emori, Jun Hirose, Kotoko Ise, Jun-Ichiro Yomoda, Michiko Kasahara, Tadanobu Shinkuma, Hiroyuki Yoshitomi, Hiromu Ito, Motomu Hashimoto, Shingo Sugahara, Hirotada Fujita, Nobuchika Yamamoto, Yoshiaki Morita, Shuh Narumiya, Ichiro Aramori
Despite advances in the treatment of rheumatoid arthritis (RA), currently approved medications can have significant side effects due to their direct immunosuppressive activities. Additionally, current therapies do not address residual synovial inflammation. In this study, we evaluated the role of integrin α9 and its ligand, tenascin-C (Tn-C), on the proliferative and inflammatory response of fibroblast-like synoviocytes (FLSs) from RA patients grown in three-dimensional (3D)-micromass culture. FLSs from osteoarthritis patients, when grown in the 3D-culture system, formed self-directed lining-like structures, whereas FLSs from RA tissues (RA-FLSs) developed an abnormal structure of condensed cellular accumulation reflective of the pathogenic features of RA synovial tissues...
November 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28975544/the-role-of-%C3%AE-9%C3%AE-1-integrin-and-its-ligands-in-the-development-of-autoimmune-diseases
#10
Shigeyuki Kon, Toshimitsu Uede
Adhesion of cells to extracellular matrix proteins through integrins expressed on the cell surface is important for cell adhesion/motility, survival, and differentiation. Recently, α9β1 integrin was reported to be important for the development of autoimmune diseases including rheumatoid arthritis, multiple sclerosis, and their murine models. In addition, ligands for α9β1 integrin, such as osteopontin and tenascin-C, are well established as key regulators of autoimmune diseases. Therefore, this review focused on the role of interactions between α9β1 integrin and its ligands in the development of autoimmune diseases...
March 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28916657/tenascin-c-and-integrin-%C3%AE-9-mediate-interactions-of-prostate-cancer-with-the-bone-microenvironment
#11
Rebeca San Martin, Ravi Pathak, Antrix Jain, Sung Yun Jung, Susan G Hilsenbeck, María C Piña-Barba, Andrew G Sikora, Kenneth J Pienta, David R Rowley
Deposition of the extracellular matrix protein tenascin-C is part of the reactive stroma response, which has a critical role in prostate cancer progression. Here, we report that tenascin C is expressed in the bone endosteum and is associated with formation of prostate bone metastases. Metastatic cells cultured on osteo-mimetic surfaces coated with tenascin C exhibited enhanced adhesion and colony formation as mediated by integrin α9β1. In addition, metastatic cells preferentially migrated and colonized tenascin-C-coated trabecular bone xenografts in a novel system that employed chorioallantoic membranes of fertilized chicken eggs as host...
November 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28747334/pedf-expression-affects-retinal-endothelial-cell-proangiogenic-properties-through-alterations-in-cell-adhesive-mechanisms
#12
Juliana Falero-Perez, SunYoung Park, Christine M Sorenson, Nader Sheibani
Pigment epithelium-derived factor (PEDF) is an endogenous inhibitor of angiogenesis. Although various ocular cell types including retinal endothelial cells (EC) produce PEDF, we know very little about cell autonomous effects of PEDF in these cell types. Here we determined how PEDF expression affects retinal EC proangiogenic properties. Retinal EC were prepared from wild-type (PEDF(+/+)) and PEDF-deficient (PEDF(-/-)) mice. The identity of EC was confirmed by staining for specific markers including vascular endothelial cadherin, CD31, and B4-lectin...
October 1, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28720870/monocyte-adhesion-to-atherosclerotic-matrix-proteins-is-enhanced-by-asn-gly-arg-deamidation
#13
Bamaprasad Dutta, Jung Eun Park, Subodh Kumar, Piliang Hao, Xavier Gallart-Palau, Aida Serra, Yan Ren, Vitaly Sorokin, Chuen Neng Lee, Hee Hwa Ho, Dominique de Kleijn, Siu Kwan Sze
Atherosclerosis arises from leukocyte infiltration and thickening of the artery walls and constitutes a major component of vascular disease pathology, but the molecular events underpinning this process are not fully understood. Proteins containing an Asn-Gly-Arg (NGR) motif readily undergo deamidation of asparagine to generate isoDGR structures that bind to integrin αvβ3 on circulating leukocytes. Here we report the identification of isoDGR motifs in human atherosclerotic plaque components including extracellular matrix (ECM) proteins fibronectin and tenascin C, which have been strongly implicated in human atherosclerosis...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28416488/activation-of-notch-signaling-by-tenascin-c-promotes-growth-of-human-brain-tumor-initiating-cells
#14
Susobhan Sarkar, Reza Mirzaei, Franz J Zemp, Wu Wei, Donna L Senger, Stephen M Robbins, V Wee Yong
Oncogenic signaling by NOTCH is elevated in brain tumor-initiating cells (BTIC) in malignant glioma, but the mechanism of its activation is unknown. Here we provide evidence that tenascin-C (TNC), an extracellular matrix protein prominent in malignant glioma, increases NOTCH activity in BTIC to promote their growth. We demonstrate the proximal localization of TNC and BTIC in human glioblastoma specimens and in orthotopic murine xenografts of human BTIC implanted intracranially. In tissue culture, TNC was superior amongst several extracellular matrix proteins in enhancing the sphere-forming capacity of glioma patient-derived BTIC...
June 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28415821/deep-sequencing-based-microrna-expression-signatures-in-head-and-neck-squamous-cell-carcinoma-dual-strands-of-pre-mir-150-as-antitumor-mirnas
#15
Keiichi Koshizuka, Nijiro Nohata, Toyoyuki Hanazawa, Naoko Kikkawa, Takayuki Arai, Atsushi Okato, Ichiro Fukumoto, Koji Katada, Yoshitaka Okamoto, Naohiko Seki
We adopted into RNA-sequencing technologies to construct the microRNA (miRNA) expression signature of head and neck squamous cell carcinoma (HNSCC). Our signature revealed that a total of 160 miRNAs (44 upregulated and 116 downregulated) were aberrantly expressed in cancer tissues. Expression of miR-150-5p (guide strand miRNA) and miR-150-3p (passenger strand miRNA) were significantly silenced in cancer tissues, suggesting both miRNAs act as antitumor miRNAs in HNSCC cells. Ectopic expression of mature miRNAs, miR-150-5p and miR-150-3p inhibited cancer cell aggressiveness...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28197173/targeting-cell-surface-receptors-for-axon-regeneration-in-the-central-nervous-system
#16
REVIEW
Menghon Cheah, Melissa R Andrews
Axon regeneration in the CNS is largely unsuccessful due to excess inhibitory extrinsic factors within lesion sites together with an intrinsic inability of neurons to regrow following injury. Recent work demonstrates that forced expression of certain neuronal transmembrane receptors can recapitulate neuronal growth resulting in successful growth within and through inhibitory lesion environments. More specifically, neuronal expression of integrin receptors such as alpha9beta1 integrin which binds the extracellular matrix glycoprotein tenascin-C, trk receptors such as trkB which binds the neurotrophic factor BDNF, and receptor PTPσ which binds chondroitin sulphate proteoglycans, have all been show to significantly enhance regeneration of injured axons...
December 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/28011588/transgenic-overexpression-of-macrophage-matrix-metalloproteinase-9-exacerbates-age-related-cardiac-hypertrophy-vessel-rarefaction-inflammation-and-fibrosis
#17
Hiroe Toba, Presley L Cannon, Andriy Yabluchanskiy, Rugmani Padmanabhan Iyer, Jeanine D'Armiento, Merry L Lindsey
Advancing age is an independent risk factor for cardiovascular disease. Matrix metalloproteinase-9 (MMP-9) is secreted by macrophages and robustly increases in the left ventricle (LV) with age. The present study investigated the effect of MMP-9 overexpression in macrophages on cardiac aging. We compared 16- to 21-mo-old C57BL/6J wild-type (WT) and transgenic (TG) male and female mice ( n = 15-20/group). MMP-9 overexpression amplified the hypertrophic response to aging, as evidenced by increased LV wall thickness and myocyte cross-sectional areas ( P < 0...
March 1, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28009347/an-integrin-approach-to-axon-regeneration
#18
REVIEW
J W Fawcett
Axon regeneration in the CNS is blocked by inhibitory molecules in the environment and by a developmental loss of regenerative potential in CNS axons. Axon growth is a specialized form of cell migration, and for any cell to migrate there must be an adhesion molecule at the growth tip that recognizes a ligand in the environment, and which is linked to signaling and cytoskeletal mechanisms. The reasons for this loss of regenerative ability in CNS axons are several, but important contributors are the developmental loss of integrins that recognize ligands in the mature CNS environment, and selective trafficking of integrins and other molecules to exclude them from axons and direct them to dendrites...
February 2017: Eye
https://www.readbyqxmd.com/read/27668890/tenascin-c-secreted-by-transdifferentiated-retinal-pigment-epithelial-cells-promotes-choroidal-neovascularization-via-integrin-%C3%AE-v
#19
Yoshiyuki Kobayashi, Shigeo Yoshida, Yedi Zhou, Takahito Nakama, Keijiro Ishikawa, Yuki Kubo, Mitsuru Arima, Shintaro Nakao, Toshio Hisatomi, Yasuhiro Ikeda, Akira Matsuda, Koh-Hei Sonoda, Tatsuro Ishibashi
Tenascin-C is expressed in choroidal neovascular (CNV) membranes in eyes with age-related macular degeneration (AMD). However, its role in the pathogenesis of CNV remains to be elucidated. Here we investigated the role of tenascin-C in CNV formation. In immunofluorescence analyses, tenascin-C co-stained with α-SMA, pan-cytokeratin, CD31, CD34, and integrin αV in the CNV membranes of patients with AMD and a mouse model of laser-induced CNV. A marked increase in the expression of tenascin-C mRNA and protein was observed 3 days after laser photocoagulation in the mouse CNV model...
September 26, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27612995/tenascin-c-is-a-major-component-of-the-fibrogenic-niche-in-kidney-fibrosis
#20
Haiyan Fu, Yuan Tian, Lili Zhou, Dong Zhou, Roderick J Tan, Donna B Stolz, Youhua Liu
Kidney fibrosis initiates at certain focal sites in which the fibrogenic niche provides a specialized microenvironment that facilitates fibroblast activation and proliferation. However, the molecular identity of these fibrogenic niches is poorly characterized. Here, we determined whether tenascin-C (TNC), an extracellular matrix glycoprotein, is a component of the fibrogenic niche in kidney fibrosis. In vivo , TNC expression increased rapidly in kidneys subjected to unilateral ureteral obstruction or ischemia/reperfusion injury and predominantly localized at the foci rich in fibroblasts in renal interstitium...
March 2017: Journal of the American Society of Nephrology: JASN
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