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Vasculogenic mimicry

Amalia Vartanian, Maria Baryshnikova, Olga Burova, Dariya Afanasyeva, Vsevolod Misyurin, Alexander Belyаvsky, Zoya Shprakh
The increasing incidence of melanoma makes this cancer an important public health problem. Therapeutic resistance is still a major obstacle to the therapy of patients with metastatic melanomas. The aim of this study was to develop the melanoma cell line resistant to DNA-alkylating agents and to elucidate the mechanisms involved in acquired drug resistance. We established a unique melanoma subline Mel MeR resistant to DNA-alkylating drug aranoza by continuous stepwise selection of the Mel Me/WT cell line with increasing concentrations of this drug...
October 21, 2016: Melanoma Research
Haoyuan Yin, Ying Shao, Xuan Chen
To analyze the effects of extracellular matrix metalloproteinase inducer (CD147) on glioma proliferation, apoptosis, invasion, and angiogenesis. Tissue samples were obtained from 101 glioma cases while normal brain tissues were obtained from 30 brain injury cases. Immunohistochemical assay was performed to detect the expressions of CD147, CD34, and VEGF in tissue samples. QRT-PCR was performed to detect the relative expression of CD147 mRNA in human glioma cell lines. CD147 siRNA was transfected into glioma cell line U251...
October 19, 2016: Neurological Sciences
Gengqiang Ling, Qiao Ji, Wei Ye, Dongying Ma, Yuena Wang
TGF-β-induced epithelial-mesenchymal transition (EMT) plays an important role in tumor progression. We assessed whether the TGF-β-induced EMT contributed to vasculogenic mimicry (VM) formation in glioma, we established an SHG44 cell line stably transfected with TGF-β cDNA loaded lentivirus. SB203580 was employed to inhibit the TGF-β-induced EMT. The results showed that the VM forming ability of cells could be improved by TGF-β over-expression. The migration and invasion capabilities of cells were also enhanced due to EMT...
October 7, 2016: International Journal of Oncology
Juan Lv, Qiaoying Zhu, Xuemei Jia, Ningzhu Yu, Qian Li
BACKGROUND Endometriosis can cause dysmenorrhea and infertility. Its pathogenesis has not yet been clarified and its treatment continues to pose enormous challenges. The protein tyrosine phosphatase (PTEN) gene is a tumor suppressor gene. The aim of this study was to investigate the role and significance of PTEN protein in the occurrence, development, and treatment of endometriosis through changes in apoptosis rate, cell cycle, and angiogenesis. MATERIAL AND METHODS PTEN was overexpressed and silenced in lentiviral vectors and inserted into primary endometrial cells...
October 16, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Cristian M Suárez-Santana, Carolina Fernández-Maldonado, Josué Díaz-Delgado, Manuel Arbelo, Alejandro Suárez-Bonnet, Antonio Espinosa de Los Monteros, Nakita Câmara, Eva Sierra, Antonio Fernández
BACKGROUND: Lung cancer is the most commonly diagnosed neoplasm in humans, however this does not apply to other animal species. Living in an aquatic environment the respiratory system of cetaceans had to undergo unique adaptations in order to them to survive and cope with totally different respiratory pathogens and potentially carcinogens from those affecting humans. CASE PRESENTATION: This article discusses not only macroscopical, histopathological and immunohistochemical features of a pulmonary carcinoma with disseminated metastases in a long-finned pilot whale (Globicephala melas), as well as the immunohistochemical analysis performed on various tissues of cetaceans belonging to the genus Globicephala...
October 11, 2016: BMC Veterinary Research
Marta Prieto-Vila, Ting Yan, Anna Sanchez Calle, Neha Nair, Laura Hurley, Tomonari Kasai, Hiroki Kakuta, Junko Masuda, Hiroshi Murakami, Akifumi Mizutani, Masaharu Seno
To grow beyond a size of approximately 1-2 mm(3), tumor cells activate many processes to develop blood vasculature. Growing evidences indicate that the formation of the tumor vascular network is very complex, and is not restricted to angiogenesis. Cancer cell-derived tumor vasculatures have been recently described. Among them, endothelial differentiation of tumor cells have been directly related to cancer stem cells, which are cells within a tumor that possess the capacity to self-renew, and to exhibit multipotential heterogeneous lineages of cancer cells...
2016: American Journal of Cancer Research
Chen Jue, Cui Lin, Zhang Zhisheng, Qian Yayun, Jin Feng, Zhao Min, Wang Haibo, Shi Youyang, Tadashi Hisamitsu, Ishikawa Shintaro, Guo Shiyu, Liu Yanqing
Hypervascularity is one of the main characteristics of hepatocellular carcinoma (HCC). However, the mechanisms of angiogenesis in HCC remain controversial. In this study, we investigate the role of Notch1 in angiogenesis of HCC. We found that Notch1 expression was correlated with formation of vasculogenic mimicry (VM) and expression of biomarkers of epithelial-to-mesenchymal transition (EMT) in the tumor specimens. Two HCC cell lines, HepG2 and MHCC97-H, with low and high Notch1 expression, respectively, were used to study the mechanism of VM formation both in vitro and in vivo...
October 1, 2016: Oncotarget
Man Ying, Qing Shen, Changyou Zhan, Xiaoli Wei, Jie Gao, Cao Xie, Bingxin Yao, Weiyue Lu
Peptide ligands consisting of l-amino acids are subject to proteolysis in vivo. When modified on the surface of nanocarriers, those peptide ligands would readily degrade and the targeting efficacy is significantly attenuated. It has received increasing scrutiny to design stable peptide ligands for targeted drug delivery. Here, we present the design of a stable peptide ligand by the formation of a head-to-tail amide bond as an example. Even though the linear l-peptide A7R (termed (L)A7R) can bind specifically to vascular endothelial growth factor receptor 2 (VEGFR2) and neuropilin-1 (NRP-1) that are overexpressed on glioma cells, neovasculature and glioma vasculogenic mimicry (VM), the tumor-homing capacity of (L)A7R is greatly impaired in vivo due to proteolysis (e...
September 29, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
Wenchen Gong, Baocun Sun, Xiulan Zhao, Danfang Zhang, Junying Sun, Tieju Liu, Qiang Gu, Xueyi Dong, Fang Liu, Yong Wang, Xian Lin, Yanlei Li
Vasculogenic mimicry (VM) is a nonangiogenesis-dependent pathway that promotes tumor growth and disease progression. Nodal signaling has several vital roles in both embryo development and cancer progression. However, the effects of Nodal signaling on VM formation in breast cancer and its underlying mechanisms are ill-defined. We analyzed the relationship between Nodal signaling and VM formation in one hundred human breast cancer cases and the results showed that the expression of Nodal was significantly correlated with VM formation, tumor metastasis, differentiation grade, TNM stage and poor prognosis...
September 21, 2016: Oncotarget
Xiao-Li Song, Shuang Liu, Ying Jiang, Li-Yan Gu, Yao Xiao, Xin Wang, Lan Cheng, Xue-Tao Li
Glioma is the most frequent primary tumor, and the treatment efficiency is unsatisfactory for the obstacle of the blood brain barrier (BBB), the multidrug resistance (MDR) and the properties of cancer cell invasion and vasculogenic mimicry (VM) formation. In this study, a kind of TF modified vincristine plus tetrandrine liposomes was developed to overcome those limitations. In vitro results showed that TF modified vincristine plus tetrandrine liposomes with suitable physicochemical property could enhance the transport across the BBB, increase the cellular uptake, inhibit the MDR, and block the cancer cell invasion and VM channels...
September 16, 2016: European Journal of Pharmaceutical Sciences
Patrick Verrando, Maria Capovilla, Roger Rahmani
Epidemiological association studies have revealed a role for pesticides in cancer occurrence, while a growing number of reports have highlighted the deleterious epigenetic modifications that can be produced by environmental factors. However, epidemiological data currently lack molecular support to unravel the epigenetic impact of pesticides on carcinogenesis. Based on epidemiological studies of melanoma, our data show for the first time that trans-nonachlor (TNC), a component of the pesticide chlordane, modulates the microRNA miR-141-3p in human melanocytic cells in vitro, with effects on melanomagenesis parameters...
August 10, 2016: Toxicology
Mauricio P Pinto, Paula Sotomayor, Gonzalo Carrasco-Avino, Alejandro H Corvalan, Gareth I Owen
Tumor angiogenesis is widely recognized as one of the "hallmarks of cancer". Consequently, during the last decades the development and testing of commercial angiogenic inhibitors has been a central focus for both basic and clinical cancer research. While antiangiogenic drugs are now incorporated into standard clinical practice, as with all cancer therapies, tumors can eventually become resistant by employing a variety of strategies to receive nutrients and oxygen in the event of therapeutic assault. Herein, we concentrate and review in detail three of the principal mechanisms of antiangiogenic therapy escape: (1) upregulation of compensatory/alternative pathways for angiogenesis; (2) vasculogenic mimicry; and (3) vessel co-option...
2016: International Journal of Molecular Sciences
Ying Liu, Xin Wu, Yuan Gao, Jigang Zhang, Dandan Zhang, Shengying Gu, Guanhua Zhu, Gaolin Liu, Xiaoyu Li
Liver cancer is the fifth most commonly diagnosed malignancy, of which hepatocellular carcinoma (HCC) represents the dominating histological subtype. Antiangiogenic therapy aimed at vascular endothelial growth factor (VEGF) has shown promising but deficient clinical prospects on account of vasculogenic mimicry, a highly patterned vascular channel distinguished from the endothelium-dependent blood vessel, which may function as blood supply networks occurring in aggressive tumors including HCC. In this study, we used a new cationic peptide, disulfide cross-linked stearylated polyarginine peptide modified with histidine (H3R5), as a reducible vector, cell penetrating peptide-modified aptamer (ST21) with specific binding to HCC cells to conjugate to peptide H3R5 as the targeting probe, miRNA-195 (miR195) as a powerful gene drug to inhibit VEGF, and fasudil to suppress vasculogenic mimicry by blocking ROCK2, all of which were simultaneously encapsulated in the same nanoparticles...
2016: International Journal of Nanomedicine
Jingxin Zhang, Lili Qiao, Ning Liang, Jian Xie, Hui Luo, Guodong Deng, Jiandong Zhang
Vasculogenic mimicry (VM), a microvascular channel made up of nonendothelial cells, has been accepted as a new model of neovascularization in aggressive tumors, owning to the specific capacity of malignant cells to form vessel-like networks which provide sufficient blood supply for tumor growth. Multiple molecular mechanisms, especially vascular endothelial (VE)-cadherin, erythropoietin-producing hepatocellular receptor A2 (EphA2), phosphatidyl inositol 3-kinase (PI3K), matrix metalloproteinases (MMPs), vascular endothelial growth factor receptor (VEGFR1), and hypoxia inducible factor (HIF)-1a, have been reported to participate in VM formation which is associated with tumor migration and invasion...
May 2016: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
Elena Andreucci, Francesca Bianchini, Alessio Biagioni, Mario Del Rosso, Laura Papucci, Nicola Schiavone, Lucia Magnelli
: Fibroblast growth factor 2 (FGF2) is involved in many physiological and pathological processes. Fgf2 deregulation contributes to the acquisition of malignant features of melanoma and other cancers. FGF2 is an alternative translation product expressed as five isoforms, a low-molecular-weight (18 KDa) and four high-molecular-weight (22, 22.5, 24, 34 KDa) isoforms, with different subcellular distributions. An internal ribosomal entry site (IRES) in its mRNA controls the translation of all the isoforms with the exception for the cap-dependent 34 KDa...
August 24, 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
Zhen-Zhen Wu, Li-Shan Chen, Rui Zhou, Jian-Ping Bin, Yu-Lin Liao, Wang-Jun Liao
Metastasis-associated in colon cancer-1 (MACC1) is an oncogene that was first identified in colon cancer. The upstream and downstream of MACC1 form a delicate regulatory network that supports its tumorigenic role in cancers. Multiple functions of MACC1 have been discovered in many cancers. In gastric cancer (GC), MACC1 has been shown to be involved in oncogenesis and tumor progression. MACC1 overexpression adversely affects the clinical outcomes of GC patients. Regarding the mechanism of action of MACC1 in GC, studies have shown that it promotes the epithelial-to-mesenchymal transition and accelerates cancer metastasis...
August 7, 2016: World Journal of Gastroenterology: WJG
Xian Lin, Ran Sun, Xiulan Zhao, Dongwang Zhu, Xueming Zhao, Qiang Gu, Xueyi Dong, Danfang Zhang, Yanhui Zhang, Yanlei Li, Baocun Sun
: c-Myc is a well-characterized proto-oncogene that induces cellular transformation and modulates programmed cell death. While recent studies have demonstrated high expression of c-Myc protein in advanced and metastatic melanoma, the clinical and biological implications remain to be fully elucidated. In this study, we investigated the effect of c-Myc overexpression in melanoma tumorigenesis. Clinicopathological analysis demonstrated that c-Myc expression positively correlated with the formation of vasculogenic mimicry (VM) and linearly patterned programmed cell necrosis (LPPCN)...
August 19, 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
Maria Serova, Annemilaï Tijeras-Raballand, Celia Dos Santos, Matthieu Martinet, Cindy Neuzillet, Alfred Lopez, Dianne C Mitchell, Brad A Bryan, Guillaume Gapihan, Anne Janin, Guilhem Bousquet, Maria Eugenia Riveiro, Ivan Bieche, Sandrine Faivre, Eric Raymond, Armand de Gramont
Angiogenesis is hallmark of clear cell renal cell carcinogenesis. Anti-angiogenic therapies have been successful in improving disease outcome; however, most patients treated with anti-angiogenic agents will eventually progress. In this study we report that clear cell renal cell carcinoma was associated with vasculogenic mimicry in both mice and human with tumor cells expressing endothelial markers in the vicinity of tumor vessels. We show that vasculogenic mimicry was efficiently targeted by sunitinib but eventually associated with tumor resistance and a more aggressive phenotype both in vitro and in vivo...
June 21, 2016: Oncotarget
Zheng Chen, Xiangling Wang, Ruiyan Liu, Lin Chen, Jianying Yi, Bing Qi, Zeyu Shuang, Min Liu, Xin Li, Shengping Li, Hua Tang
Emerging evidence indicates that dysregulation of microRNAs (miRNAs) contributes to hepatocellular carcinoma (HCC) tumorigenesis and development. Here, we found that miR-615-5p was obviously downregulated in HCC. Furthermore, the deficiency of demethylase KDM4B stimulated the CpG methylation of miR-615-5p promoter and then decreased the miR-615-5p expression. The Ras-related protein RAB24 was found to be downregulated by miR-615-5p. The low level of miR-615-5p increased the expression of RAB24 and facilitated HCC growth and metastasis in vitro and in vivo...
July 25, 2016: Oncotarget
Aurélie Borrull, Bertrand Allard, Anne Wijkhuisen, Amaury Herbet, Patricia Lamourette, Wided Birouk, Denis Leiber, Zahra Tanfin, Frédéric Ducancel, Didier Boquet, Jean-Yves Couraud, Philippe Robin
Metastatic melanoma is an aggressive cancer with a poor prognostic, and the design of new targeted drugs to treat melanoma is a therapeutic challenge. A promising approach is to produce monoclonal antibodies (mAbs) against the endothelin B receptor (ETB), which is known to be overexpressed in melanoma and to contribute to proliferation, migration and vasculogenic mimicry associated with invasiveness of this cancer. We previously described rendomab-B1, a mAb produced by DNA immunization. It is endowed with remarkable characteristics in term of affinity, specificity and antagonist properties against human ETB expressed by the endothelial cells, but, surprisingly, had poor affinity for ETB expressed by melanoma cells...
July 8, 2016: MAbs
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