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https://www.readbyqxmd.com/read/29148540/single-cell-heterogeneity-in-ductal-carcinoma-in-situ-of-breast
#1
Michael J Gerdes, Yesim Gökmen-Polar, Yunxia Sui, Alberto Santamaria Pang, Nicole LaPlante, Adrian L Harris, Puay-Hoon Tan, Fiona Ginty, Sunil S Badve
Heterogeneous patterns of mutations and RNA expression have been well documented in invasive cancers. However, technological challenges have limited the ability to study heterogeneity of protein expression. This is particularly true for pre-invasive lesions such as ductal carcinoma in situ of the breast. Cell-level heterogeneity in ductal carcinoma in situ was analyzed in a single 5 μm tissue section using a multiplexed immunofluorescence analysis of 11 disease-related markers (EGFR, HER2, HER4, S6, pmTOR, CD44v6, SLC7A5 and CD10, CD4, CD8 and CD20, plus pan-cytokeratin, pan-cadherin, DAPI, and Na+K+ATPase for cell segmentation)...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29148041/fscn1-predicts-survival-and-is-regulated-by-a-pi3k-dependent-mechanism-in-renal-cell-carcinoma
#2
Mengping Zhang, Zhijian Zhao, Xiaolu Duan, Ping Chen, Zhenwei Peng, Huijuan Qiu
While overexpression of FSCN1 is reported in several cancers, the prognostic significance of FSCN1 in renal cell carcinoma (RCC) and the molecular mechanisms involved remain largely unclear. We retrospectively enrolled 194 patients with non-metastatic clear-cell RCC undergoing nephrectomy in our center between 2008 and 2011. FSCN1 expression was assessed by immunohistochemical staining and its association with clinicopathologic features and survival were evaluated. Functional effects of a modulated FSCN1 expression were analyzed with regard to invasion in RCC cell lines and metastasis in vivo...
November 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29147820/cue-signal-response-analysis-in-3d-chondrocyte-scaffolds-with-anabolic-stimuli
#3
Michael Neidlin, Antonion Korcari, Giorgos Macheras, Leonidas G Alexopoulos
Articular cartilage is an avascular connective tissue responsible for bearing loads. Cell signaling plays a central role in cartilage homeostasis and tissue engineering by directing chondrocytes to synthesize/degrade the extracellular matrix or promote inflammatory responses. The aim of this paper was to investigate anabolic, catabolic and inflammatory pathways of well-known and underreported anabolic stimuli in 3D chondrocyte cultures and connect them to diverse cartilage responses including matrix regeneration and cell communication...
November 16, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29146722/the-notch4-hey1-pathway-induces-epithelial-mesenchymal-transition-in-head-and-neck-squamous-cell-carcinoma
#4
Takahito Fukusumi, Theresa Guo, Akihiro Sakai, Mizuo Ando, Shuling Ren, Sunny Haft, Chao Liu, Panomwat Amornphimoltham, J Silvio Gutkind, Joseph Califano
BACKGROUND: Recently, several comprehensive genomic analyses demonstrated NOTCH1 and NOTCH3 mutations in head and neck squamous cell carcinoma (HNSCC) in approximately 20% of cases. Similar to other types of cancers, these studies also indicate that the NOTCH pathway is closely related to HNSCC progression. However, the role of NOTCH4 in HNSCC is less well understood. METHODS: We analyzed NOTCH4 pathway and downstream gene expression in the TCGA data set. To explore the functional role of NOTCH4, we performed in vitro proliferation, cisplatin viability, apoptosis, and cell cycle assays...
November 16, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29146185/biomarker-identification-for-statin-sensitivity-of-cancer-cell-lines
#5
Vineet K Raghu, Colin H Beckwitt, Katsuhiko Warita, Alan Wells, Panayiotis V Benos, Zoltán N Oltvai
Statins are potent cholesterol reducing drugs that have been shown to reduce tumor cell proliferation in vitro and tumor growth in animal models. Moreover, retrospective human cohort studies demonstrated decreased cancer-specific mortality in patients taking statins. We previously implicated membrane E-cadherin expression as both a marker and mechanism for resistance to atorvastatin-mediated growth suppression of cancer cells; however, a transcriptome-profile-based biomarker signature for statin sensitivity has not yet been reported...
November 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29146183/d-rhamnose-%C3%AE-hederin-inhibits-migration-and-invasion-of-human-breast-cancer-cell-line-mda-mb-231
#6
Lin Cheng, Tian-Song Xia, Liang Shi, Lingyun Xu, Weixian Chen, Yulan Zhu, Qiang Ding
Many natural products have been shown to have inhibitory effects on the metastatic process of various cancers including breast cancer. An active triterpenoid saponin D Rhamnose β-hederin (DRβ-H) from Clematis ganpiniana, has been known induce the apoptosis of breast cancer cells, but the effect of DRβ-H on the metastasis of breast cancer cells is largely unknown. In this study, we demonstrated that a non-cytotoxic concentration of DRβ-H markedly suppressed wound healing migration, migration through the chamber and invasion through the matrigel...
November 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29145632/clinical-significance-of-cd13-and-epithelial-mesenchymal-transition-emt-markers-in-hepatocellular-carcinoma
#7
Chihiro Yamanaka, Hiroshi Wada, Hidetoshi Eguchi, Hisanori Hatano, Kunihito Gotoh, Takehiro Noda, Daisaku Yamada, Tadafumi Asaoka, Koichi Kawamoto, Hiroaki Nagano, Yuichiro Doki, Masaki Mori
Background & Aims: To improve prognosis in patients with hepatocellular carcinoma (HCC), the molecular mechanisms of tumor thrombus formation and metastasis must be clarified. The epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) play crucial roles in tumor invasion and metastasis. This study aimed to reveal the clinical significance of the expression of the functional CSC marker, CD13, and investigate the correlation between CD13 expression and two EMT markers, E-cadherin and vimentin...
November 14, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29143117/the-expression-of-ve-cadherin-in-breast-cancer-cells-modulates-cell-dynamics-as-a-function-of-tumor-differentiation-and-promotes-tumor-endothelial-cell-interactions
#8
Maryam Rezaei, Jiahui Cao, Katrin Friedrich, Björn Kemper, Oliver Brendel, Marianne Grosser, Manuela Adrian, Gustavo Baretton, Georg Breier, Hans-Joachim Schnittler
The cadherin switch has profound consequences on cancer invasion and metastasis. The endothelial-specific vascular endothelial cadherin (VE-cadherin) has been demonstrated in diverse cancer types including breast cancer and is supposed to modulate tumor progression and metastasis, but underlying mechanisms need to be better understood. First, we evaluated VE-cadherin expression by tissue microarray in 392 cases of breast cancer tumors and found a diverse expression and distribution of VE-cadherin. Experimental expression of fluorescence-tagged VE-cadherin (VE-EGFP) in undifferentiated, fibroblastoid and E-cadherin-negative MDA-231 (MDA-VE-EGFP) as well as in differentiated E-cadherin-positive MCF-7 human breast cancer cell lines (MCF-VE-EGFP), respectively, displayed differentiation-dependent functional differences...
November 15, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29142905/p-cadherin-cdh3-is-overexpressed-in-colorectal-tumors-and-has-potential-as-a-serum-marker-for-colorectal-cancer-monitoring
#9
H M C Shantha Kumara, Geoffrey A Bellini, Otavia L Caballero, Sonali A C Herath, Tao Su, Aqeel Ahmed, Linda Njoh, Vesna Cekic, Richard L Whelan
Introduction: Placental-Cadherin (CDH3) is a cell adhesion molecule vital to cellular localization and tissue integrity. It is highly expressed in the placenta (PLC)and is overexpressed by many types of cancer. P-cadherin levels in colorectal cancer (CRC) remains poorly characterized. This study's purpose was to determine P-cadherin expression in CRC and normal tissues and to assess plasma CDH3 levels in order to determine the relationship, if any, between cancer stage, P-cadherin expression and plasma CDH3 levels...
September 2017: Oncoscience
https://www.readbyqxmd.com/read/29142604/klotho-expression-is-correlated-to-molecules-associated-with-epithelial-mesenchymal-transition-in-lung-squamous-cell-carcinoma
#10
Takayuki Ibi, Jitsuo Usuda, Tatsuya Inoue, Akira Sato, Kyoshiro Takegahara
Klotho is known as an anti-aging gene. We previously reported that the expression of Klotho is a postoperative prognostic factor for patients with lung large cell neuroendocrine carcinoma and lung small cell carcinoma. Recently, Klotho was shown to suppress the epithelial-mesenchymal transition (EMT). In the present study, we examined the association between the expression of Klotho and the regulation of EMT in lung squamous cell carcinoma. We immunohistochemically examined the expression of Klotho in patients with lung squamous cell carcinoma who had undergone surgical resection or photodynamic therapy...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142199/sensorfret-a-standardless-approach-to-measuring-pixel-based-spectral-bleed-through-and-fret-efficiency-using-spectral-imaging
#11
Paul T Arsenovic, Carl R Mayer, Daniel E Conway
Fluorescence microscopy of FRET-based biosensors allow nanoscale interactions to be probed in living cells. This paper describes a novel approach to spectrally resolved fluorescence microscopy, termed sensorFRET, that enables quantitative measurement of FRET efficiency. This approach is an improvement on existing methods (FLIM, sRET, luxFRET, pFRET), as it does not require single fluorophore standards to be measured with every experiment and the acquisition is intensity independent, allowing the laser power to be optimized for varying levels of fluorophore expression...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142072/salt-bridges-gate-alpha-catenin-activation-at-intercellular-junctions
#12
Samantha Barrick, Jing Li, Xinyu Kong, Alokananda Ray, Emad Tajkhorshid, Deborah Leckband
Cadherin complexes transduce force fluctuations at junctions to activate signals that reinforce stressed intercellular contacts. α-Catenin is an identified force transducer within cadherin complexes that is autoinhibited under low tension. Increased force triggers a conformational change that exposes a cryptic site for the actin-binding protein vinculin. This study tested predictions that salt bridges within the force-sensing core modulate α-catenin activation. Studies with a fluorescence resonance energy transfer (FRET)-based α-catenin conformation sensor demonstrated that the salt-bridge mutations R551A and D503N each enhance α-catenin activation in live cells, but R551A has a greater impact...
November 15, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29141833/comparative-study-of-the-clinical-histological-and-biological-characteristics-of-squamous-cell-carcinomas-in-areas-previously-treated-with-photodynamic-therapy
#13
Tamara Gracia Cazaña, Nerea Salazar, Jesús Vera-Álvarez, Salvador González, Angeles Juarranz, Yolanda Gilaberte
Although photodynamic therapy (PDT) is an effective treatment option for non-melanoma skin cancer, the development of aggressive tumours in PDT-treated areas has been described. To evaluate the clinical, histological, and biological characteristics of squamous cell carcinomas (SCCs) in areas previously treated with PDT vs those arising in areas never treated with this therapeutic modality. A retrospective observational study was designed. We collected all cases of invasive SCCs in areas previously treated with PDT...
November 15, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29141686/anisotropic-m%C3%A3-ller-glial-scaffolding-supports-a-multiplex-lattice-mosaic-of-photoreceptors-in-zebrafish-retina
#14
Mikiko Nagashima, Jeremy Hadidjojo, Linda K Barthel, David K Lubensky, Pamela A Raymond
BACKGROUND: The multiplex, lattice mosaic of cone photoreceptors in the adult fish retina is a compelling example of a highly ordered epithelial cell pattern, with single cell width rows and columns of cones and precisely defined neighbor relationships among different cone types. Cellular mechanisms patterning this multiplex mosaic are not understood. Physical models can provide new insights into fundamental mechanisms of biological patterning. In earlier work, we developed a mathematical model of photoreceptor cell packing in the zebrafish retina, which predicted that anisotropic mechanical tension in the retinal epithelium orients planar polarized adhesive interfaces to align the columns as cone photoreceptors are generated at the retinal margin during post-embryonic growth...
November 15, 2017: Neural Development
https://www.readbyqxmd.com/read/29138985/effects-of-microrna-708-on-epithelial-mesenchymal-transition-cell-proliferation-and-apoptosis-in-melanoma-cells-by-targeting-lef1-through-the-wnt-signaling-pathway
#15
Xiao-Fei Song, Qi-Hua Wang, Ran Huo
This study was conducted in order to elucidate the role microRNA-708 (miR-708) plays between proliferation, invasion, migration, and epithelial-mesenchymal transition (EMT) involving melanoma cells by targeting using LEF1 through the Wnt signaling pathway. Male Kunming mice were selected and subsequently divided into normal and model groups to take part in this study. Following cell line selection, the B16 cells with the highest miR-708 expression were selected and assigned into the control, blank, negative control (NC), miR-708 mimic, miR-708 inhibitor, siRNA-LEF1, and miR-708 inhibitor + siRNA-LEF1 groups...
November 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29138866/hmga2-facilitates-epithelial-mesenchymal-transition-in-renal-cell-carcinoma-by-regulating-the-tgf-%C3%AE-smad2-signaling-pathway
#16
Bo Kou, Wei Liu, Xiaoshuang Tang, Qingshan Kou
High-mobility group AT-hook 2 (HMGA2), a member of the high mobility group family, has been reported to correlate with cancer progression. However, there is no report concerning the correlation between HMGA2 and metastasis in renal cell carcinoma. In the present study, we found that HMGA2 was highly expressed in five renal cell carcinoma cell lines compared with that in the normal renal tubular epithelial HK2 cell line. Additionally, HMGA2 facilitated cell migration and invasion of renal cell carcinoma cells, as evidenced by wound healing and Transwell assays...
November 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138864/expression-level-of-microrna-200c-is-associated-with-cell-morphology-in-vitro-and-histological-differentiation-through-regulation-of-zeb1-2-and-e-cadherin-in-gastric-carcinoma
#17
Atsushi Kurata, Masatoshi Yamada, Shin-Ichiro Ohno, Shigeru Inoue, Hirotsugu Hashimoto, Koji Fujita, Masakatsu Takanashi, Masahiko Kuroda
Scirrhous type gastric cancer is characterized by diffuse infiltration of poorly differentiated adenocarcinoma cells and poor prognosis. Although association of poorly differentiated histology with reduction in E-cadherin expression, as well as association of microRNA (miR)-200c with E-cadherin through regulation of ZEB1/2, has been reported, participation of miR-200c in gastric carcinogenesis is not fully understood. We used 6 cell lines originating from gastric cancers, and investigated levels of miR-200c along with its target mRNAs ZEB1/2 and E-cadherin by qRT-PCR...
November 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138850/role-of-mitochondrial-function-in-the-invasiveness-of-human-colon-cancer-cells
#18
Chen-Sung Lin, Li-Tzu Liu, Liang-Hung Ou, Siao-Cian Pan, Chia-I Lin, Yau-Huei Wei
We investigated the role of mitochondrial function in the invasiveness of human colorectal cancer (CRC) cell lines, using paired primary SW480 and metastatic SW620 cells, and appraised the clinical relevance of the alteration of mtDNA copy number in 33 pairs of CRC specimens after surgical resection. Suppression of mitochondrial function was achieved by the exposure of cells to oligomycin A (OA) or by knockdown of mitochondrial transcriptional factor A (TFAM) to evaluate their effects on energy metabolism, reactive oxygen species, protein expression levels of epithelial-mesenchymal transition (EMT) markers and invasive activity of CRC cells...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138815/curcumin-reverses-tobacco-smoke%C3%A2-induced-epithelial%C3%A2-mesenchymal-transition-by-suppressing-the-mapk-pathway-in-the-lungs-of-mice
#19
Zhaofeng Liang, Rui Wu, Wei Xie, Mingming Zhu, Chunfeng Xie, Xiaoting Li, Jianyun Zhu, Weiwei Zhu, Jieshu Wu, Shanshan Geng, Wenrong Xu, Caiyun Zhong, Hongyu Han
Tobacco smoke is a major risk factor for lung cancer. Epithelial‑mesenchymal transition (EMT) is decisive in cancer invasion and metastasis, and therefore promotes cancer progression. Mitogen‑activated protein kinase (MAPK) pathways are implicated in various aspects of cancer development and progression, including the EMT process. The chemopreventive effect of curcumin on carcinogenesis has been reported in vivo and in vitro. The present study investigated tobacco smoke‑induced alterations in the MAPK/activator protein‑1 (AP‑1) pathways, and pulmonary EMT changes in the lungs of mice, and further observed the chemopreventive effect of curcumin...
November 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138573/matrine-suppresses-the-migration-and-invasion-of-nsclc-cells-by-inhibiting-pax2-induced-epithelial-mesenchymal-transition
#20
Jun Yang, Du He, Yan Peng, Hongzhen Zhong, Yuhong Deng, Zhonghua Yu, Chengnong Guan, Yufang Zuo, Zumin Xu
Non-small cell lung cancer (NSCLC) is the major cause of deaths among all the cancer types worldwide. Most of the NSCLC is diagnosed at an advanced stage and the 5-year overall survival rate is low. The reason for the low survival rate of patients with NSCLC is mainly due to distant metastasis. Matrine, a traditional Chinese medicine, has been shown a significant anti-proliferation and anti-invasive effect in tumors. However, little is known on the anti-invasive mechanism of matrine in lung cancer. Therefore, we tried to investigate the molecular mechanism of matrine on the invasive ability of NSCLC cells in vitro...
2017: OncoTargets and Therapy
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