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Fluorescence lung cancer

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https://www.readbyqxmd.com/read/29329887/determination-of-n-glycans-by-high-performance-liquid-chromatography-using-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-as-the-glycosylamine-labeling-reagent
#1
Yike Wu, Qiuyue Sha, Juan Du, Chang Wang, Liang Zhang, Bi-Feng Liu, Yawei Lin, Xin Liu
Robust, efficient identification and accurate quantification of N-glycans are of great significance in N-glycomics analysis. Here, a simple and rapid derivatization method, based on the combination of microwave-assisted deglycosylation and 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate (AQC) labeling, was developed for the analysis of N-glycan by high performance liquid chromatography with fluorescence detection (HPLC-FLD). After optimizing various parameters affecting deglycosylation and derivatization by RNase B, the time for N-glycan labeling was shortened to 50 min with ∼10-fold enhancement in detection sensitivity comparing to conventional 2-aminobenzoic acid (2-AA) labeling method...
January 8, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29328421/antitumor-activity-of-curcumin-by-modulation-of-apoptosis-and-autophagy-in-human-lung-cancer-a549-cells-through-inhibiting-pi3k-akt-mtor-pathway
#2
Furong Liu, Song Gao, Yuxuan Yang, Xiaodan Zhao, Yameng Fan, Wenxia Ma, Danrong Yang, Aimin Yang, Yan Yu
Curcumin is known to exhibit anticancer effects on various cancers with selective cytotoxicity in tumor cells. In the present study, the effects of curcumin‑induced multiple PCDs on human non‑small cell lung cancer (NSCLC) cells and the potential molecular mechanisms of apoptosis and autophagy triggered by curcumin via the PI3K/Akt/mTOR signaling pathway were explored, further confirmed by co‑culture of curcumin with mTOR blocker rapamycin and PI3K/Akt inhibitor LY294002. The anti‑proliferation effect of different stimulus was measured by MTT assay...
January 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29327789/imaging-macrophage-distribution-and-density-in-mammary-tumors-and-lung-metastases-using-fluorine-19-mri-cell-tracking
#3
Ashley V Makela, Paula J Foster
PURPOSE: The presence of tumor-associated macrophages (TAMs) correlates with breast cancer progression and metastatic spread. Metastasis-associated macrophages (MAMs) are also recruited to distant sites, where they support metastatic growth. In this study, we demonstrate that in vivo fluorine-19 (19 F)-based MRI cell tracking can evaluate the density and distribution of macrophages within murine breast cancer tumors and associated metastases. METHODS: Three murine breast cancer cell lines with different metastatic potentials (4T1, 168FARN, and 67NR) were implanted into the mammary fat pad in mice...
January 12, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29327716/genomic-heterogeneity-of-alk-fusion-breakpoints-in-non-small-cell-lung-cancer
#4
Jason N Rosenbaum, Ryan Bloom, Jason T Forys, Jeff Hiken, Jon R Armstrong, Julie Branson, Samantha McNulty, Priya D Velu, Kymberlie Pepin, Haley Abel, Catherine E Cottrell, John D Pfeifer, Shashikant Kulkarni, Ramaswamy Govindan, Eric Q Konnick, Christina M Lockwood, Eric J Duncavage
In lung adenocarcinoma, canonical EML4-ALK inversion results in a fusion protein with a constitutively active ALK kinase domain. Evidence of ALK rearrangement occurs in a minority (2-7%) of lung adenocarcinoma, and only ~60% of these patients will respond to targeted ALK inhibition by drugs such as crizotinib and ceritinib. Clinically, targeted anti-ALK therapy is often initiated based on evidence of an ALK genomic rearrangement detected by fluorescence in situ hybridization (FISH) of interphase cells in formalin-fixed, paraffin-embedded tissue sections...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29325419/a-new-method-of-infrared-fluorescence-enhanced-thoracoscopic-segmentectomy
#5
Ahmed G Elkhouly, Benedetto Cristino, Eugenio Pompeo
Optimal identification of the intersegmental plane can be challenging during thoracoscopic anatomical segmentectomy for lung cancer. We describe a simple new method of infrared-fluorescence-enhanced thoracoscopy with selected injection of indocyanine green into the bronchi not targeted for resection, which allows us to clearly identify the intersegmental plane in thoracoscopic segmentectomy.
January 1, 2018: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29321587/distribution-analysis-of-epertinib-in-brain-metastasis-of-her2-positive-breast-cancer-by-imaging-mass-spectrometry-and-prospect-for-antitumor-activity
#6
Yukari Tanaka, Michinari Hirata, Satomi Shinonome, Mikinori Torii, Ken-Ichi Nezasa, Hidekazu Tanaka
Epertinib (S-222611) is a potent, reversible, and selective tyrosine kinase inhibitor of epidermal growth factor receptor (EGFR), human EGFR2 (HER2), and human EGFR4. We developed experimental brain metastasis models by intraventricular injection (intraventricular injection mouse model; IVM) of HER2-positive breast cancer (MDA-MB-361-luc-BR2/BR3) or T790M-EGFR-positive lung cancer (NCI-H1975-luc) cells. After a single oral administration, epertinib and lapatinib concentrations in brain metastatic regions were analyzed by quantitative imaging mass spectrometry...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29313813/a-phase-ii-study-of-trastuzumab-emtansine-in-her2-positive-non-small-cell-lung-cancer
#7
Katsuyuki Hotta, Keisuke Aoe, Toshiyuki Kozuki, Kadoaki Ohashi, Kiichiro Ninomiya, Eiki Ichihara, Toshio Kubo, Takashi Ninomiya, Kenichi Chikamori, Daijiro Harada, Naoyuki Nogami, Taizo Hirata, Shiro Hinotsu, Shinichi Toyooka, Katsuyuki Kiura
Trastuzumab emtansine (T-DM1), an anti-HER2 antibody-drug conjugate, has been shown to significantly improve survival in HER2-positive breast cancer. We report a phase II trial of T-DM1 monotherapy in relapsed non-small-cell lung cancer (NSCLC). with documented HER2-positivity (immunohistochemistry [IHC] 3+, both IHC 2+ and fluorescence in situ hybridization [FISH] +, or exon 20 mutation). This study was terminated early due to limited efficacy. The demographic characteristics in the 15 assessable patients were as follows: age (median: 67 years), sex (male: 47%), performance status (0-1: 80%), and HER2 status (IHC 3+: 33%; IHC 2+/FISH: 20%; mutation: 47%)...
December 4, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29312572/comparison-of-alk-status-between-primary-and-corresponding-lymph-node-metastatic-tumors-in-lung-cancer-patients
#8
Qiqi Gao, Honghai Ma, Bo Wang, Yake Yao, Jianya Zhou, Jianying Zhou
Background: The anaplastic lymphoma kinase (ALK) protein has recently become a promising target in the treatment of non-small cell lung carcinomas(NSCLC) patients with ALK translocation because of the high response rates obtained with an ALK inhibitor. ALK translocations are present in approximately 3-5% of NSCLC patients. According to the literature, little information about the relationship of ALK status between the primary tumor and metastatic sites has been reported. We intended to determine whether the ALK translocations of primary lung cancers are consistent with those in corresponding metastatic lymph node tumors...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29310266/ultrasensitive-and-high-specific-detection-of-non-small-cell-lung-cancer-cells-in-human-serum-and-clinical-pleural-effusion-by-aptamer-based-fluorescence-spectroscopy
#9
Yuhang Wu, Hong Zhang, Junfeng Xiang, Zhihua Mao, Gang Shen, Fengmin Yang, Yan Liu, Wei Wang, Ning Du, Jinghua Zhang, Yalin Tang
Lung cancer is the leading cause of cancer-related deaths worldwide, and approximately 85% are diagnosed as non-small-cell lung cancer (NSCLC). However, efficient detection and diagnosis of NSCLC at early stage is still challenging. In this work, we developed a simple, ultrasensitive and high selective strategy for A549 human NSCLC cells detection based on combining the reorganization property of a novel cyanine dye 3,3'-di(3-sulfopropyl)-4,5,4',5'-dibenzo-9-methyl-thiacarbocyanine triethylammonium salt (cy-M) to aptamer S6 G-quadruplex structure having specific affinity to NSCLC cells, which induced a dramatic fluorescence enhancement (~ 104 times)...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29299117/a-new-bioluminescent-reporter-system-to-study-the-biodistribution-of-systematically-injected-tumor-derived-bioluminescent-extracellular-vesicles-in-mice
#10
Prakash Gangadaran, Xiu Juan Li, Ho Won Lee, Ji Min Oh, Senthilkumar Kalimuthu, Ramya Lakshmi Rajendran, Seung Hyun Son, Se Hwan Baek, Thoudam Debraj Singh, Liya Zhu, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
In vivo biodistribution and fate of extracellular vesicles (EVs) are still largely unknown and require reliable in vivo tracking techniques. In this study, in vivo bioluminescence imaging (BLI) using Renilla luciferase (Rluc) was developed and applied to monitoring of EVs derived from thyroid cancer (CAL-62 cells) and breast cancer (MDA-MB-231) in nude mice after intravenous administration and was compared with a dye-based labeling method for EV derived from CAL-62 cells. The EVs were successfully labeled with Rluc and visualized by BLI in mice...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29296212/small-sized-colorectal-cancer-cells-harbor-metastatic-tumor-initiating-cells
#11
Lei Mu, Kaiyu Huang, Yibing Hu, Chang Yan, Xiaolan Li, Deding Tao, Jianping Gong, Jichao Qin
Colorectal cancer (CRC) is heterogeneous and contains different-sized cells. Recent studies have shown that tumor-initiating cells (TICs) are involved in cancer initiation, recurrence and metastasis. However, connections between cancer cell size and stem-like properties are largely unknown. Here we purified large- and small-sized CRC cells by fluorescence-activated cell sorting (FACS) based on forward scatter (FSC), and demonstrated that small CRC cells possess higher holoclone- and sphere-forming capacity in vitro, tumor-initiating capacity in vivo and form more lung metastases compared with large CRC cells...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290827/local-intratracheal-delivery-of-perfluorocarbon-nanoparticles-to-lung-cancer-demonstrated-with-magnetic-resonance-multimodal-imaging
#12
Lina Wu, Xiaofei Wen, Xiance Wang, Chunan Wang, Xilin Sun, Kai Wang, Huiying Zhang, Todd Williams, Allen J Stacy, Junjie Chen, Anne H Schmieder, Gregory M Lanza, Baozhong Shen
Eighty percent of lung cancers originate as subtle premalignant changes in the airway mucosal epithelial layer of bronchi and alveoli, which evolve and penetrate deeper into the parenchyma. Liquid-ventilation, with perfluorocarbons (PFC) was first demonstrated in rodents in 1966 then subsequently applied as lipid-encapsulated PFC emulsions to improve pulmonary function in neonatal infants suffering with respiratory distress syndrome in 1996. Subsequently, PFC nanoparticles (NP) were extensively studied as intravenous (IV) vascular-constrained nanotechnologies for diagnostic imaging and targeted drug delivery applications...
2018: Theranostics
https://www.readbyqxmd.com/read/29286485/characterization-of-tumor-cells-using-a-medical-wire-for-capturing-circulating-tumor-cells-a-3d-approach-based-on-immunofluorescence-and-dna-fish
#13
Giulia Gallerani, Claudia Cocchi, Martine Bocchini, Filippo Piccinini, Francesco Fabbri
Circulating tumor cells (CTCs) are associated with poor survival in metastatic cancer. Their identification, phenotyping, and genotyping could lead to a better understanding of tumor heterogeneity and thus facilitate the selection of patients for personalized treatment. However, this is hampered because of the rarity of CTCs. We present an innovative approach for sampling a high volume of the patient blood and obtaining information about presence, phenotype, and gene translocation of CTCs. The method combines immunofluorescence staining and DNA fluorescent-in-situ-hybridization (DNA FISH) and is based on a functionalized medical wire...
December 21, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29286212/knockdown-of-cpeb4-expression-suppresses-cell-migration-and-invasion-via-akt-pathway-in-non-small-cell-lung-cancer
#14
Jing Hu, LiBin Zhang, Qiang Chen, Jie Lin, ShaoBo Wang, Ri Liu, WenJing Zhang, Kun Miao, Tao Shou
Cytoplasmic polyadenylation element binding protein 4 (CPEB4) could be an important regulator in variety of cancers. However, the biological function and the underlying molecular mechanism of CPEB4 in non-small cell lung cancer (NSCLC) remains unknown. In this study, we investigated the metastasis role of CPEB4 in NSCLC cells, we knocked down CPEB4 using siRNA. Transwell migration assay and cell invasion assay on Matrigel were presented, and cell migration was also determined by scratch-healing assay. ROS generation were determined by fluorescence probe DCFH2-DA...
December 29, 2017: Cell Biology International
https://www.readbyqxmd.com/read/29285401/multifunctional-stimuli-responsive-polymer-gated-iron-and-gold-embedded-silica-nano-golf-balls-nanoshuttles-for-targeted-on-demand-theranostics
#15
Liping Wang, Grace Jang, Deependra Kumar Ban, Vrinda Sant, Jay Seth, Sami Kazmi, Nirav Patel, Qingqing Yang, Joon Lee, Woraphong Janetanakit, Shanshan Wang, Brian P Head, Gennadi Glinsky, Ratneshwar Lal
Multi-functional nanoshuttles for remotely targeted and on-demand delivery of therapeutic molecules and imaging to defined tissues and organs hold great potentials in personalized medicine, including precise early diagnosis, efficient prevention and therapy without toxicity. Yet, in spite of 25 years of research, there are still no such shuttles available. To this end, we have designed magnetic and gold nanoparticles (NP)-embedded silica nanoshuttles (MGNSs) with nanopores on their surface. Fluorescently labeled Doxorubicin (DOX), a cancer drug, was loaded in the MGNSs as a payload...
2017: Bone Research
https://www.readbyqxmd.com/read/29282718/multispectral-imaging-for-quantitative-and-compartment-specific-immune-infiltrates-reveals-distinct-immune-profiles-that-classify-lung-cancer-patients
#16
Artur Mezheyeuski, Christian Holst Bergsland, Max Backman, Dijana Djureinovic, Tobias Sjöblom, Jarle Bruun, Patrick Micke
Semiquantitative assessment of immune markers by immunohistochemistry (IHC) has significant limitations for describing the diversity of the immune response in cancer. Therefore we evaluated a fluorescence-based multiplexed IHC method in combination with a multispectral imaging system to quantify immune infiltrates in situ in the environment of non-small cell lung cancer (NSCLC). A tissue microarray including 57 non-small cell lung cancer (NSCLC) cases was stained with antibodies to CD8, CD20, CD4, FOXP3, CD45RO and for pan-cytokeratin and immune cells were quantified in epithelial and stroma compartments...
December 27, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29260515/-mir-155-bach1-signaling-pathway-in-human-lung-adenocarcinoma-cell-death-induced-by-arsenic-trioxide
#17
Shi-Yan Gu, Hong-Yu Chen, Huang-Mei Dai, Xin-Yang Li, Zun-Zhen Zhang
OBJECTIVE: To explore the changes of micro RNA 155 (miR-155),BTB and CNC homologous protein 1 (BACH1),quinone oxidoreductase 1 (NQO1) and heme-oxygenase-1 (HO-1) in the process of arsenic trioxide-induced cell death,and to clarify the relationship between miR-155 and BACH1,providing experimental basis for the sensitivity of arsenic trioxide (ATO) treatment. METHODS: Human lung adenocarcinoma cell line A549 cells were treated with different concentrations of ATO...
November 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29259252/image-guided-fluorescence-endomicroscopy-from-macro-to-micro-imaging-of-radiation-induced-pulmonary-fibrosis
#18
Jessica R Perez, Norma Ybarra, Frederic Chagnon, Monica Serban, Gabriel Pare, Olivier Lesur, Jan Seuntjens, Issam El Naqa
Radiation-induced pulmonary fibrosis (RIPF) is a debilitating side effect of radiation therapy (RT) of several cancers including lung and breast cancers. Current clinical methods to assess and monitor RIPF involve diagnostic computed tomography (CT) imaging, which is restricted to anatomical macroscopic changes. Confocal laser endomicroscopy (CLE) or fluorescence endomicroscopy (FE) in combination with a fibrosis-targeted fluorescent probe allows to visualize RIPF in real-time at the microscopic level. However, a major limitation of FE imaging is the lack of anatomical localization of the endomicroscope within the lung...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29241970/identification-of-a-folate-receptor-targeted-near-infrared-molecular-contrast-agent-to-localize-pulmonary-adenocarcinomas
#19
Jarrod D Predina, Andrew D Newton, Courtney Connolly, Ashley Dunbar, Michael Baldassari, Charuhas Deshpande, Edward Cantu, Jason Stadanlick, Sumith A Kularatne, Philip S Low, Sunil Singhal
Non-small cell lung cancer (NSCLC) is the number one cancer killer in the United States. Despite attempted curative surgical resection, nearly 40% of patients succumb to recurrent disease. High recurrence rates may be partially explained by data suggesting that 20% of NSCLC patients harbor synchronous disease that is missed during resection. In this report, we describe the use of a novel folate receptor-targeted near-infrared contrast agent (OTL38) to improve the intraoperative localization of NSCLC during pulmonary resection...
October 26, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29223555/emerging-roles-of-circular-rna-hsa_circ_0000064-in-the-proliferation-and-metastasis-of-lung-cancer
#20
Yan-Hong Luo, Xiang-Zhi Zhu, Ke-Wei Huang, Qian Zhang, Yan-Xin Fan, Peng-Wei Yan, Jing Wen
Circular RNAs (circRNAs), a novel class of widespread and diverse endogenous RNAs, can regulate gene expression in mammals. CircRNAs have recently been identified as microRNA sponges and involved in the development of some human diseases. However, the role of circRNAs in the process of tumorigenesis and development of lung cancer remains vague. The purpose of this study is to investigate the role of circRNAs in the lung cancer. In this study, we chose hsa_circ_0000064 as a targeted circRNA to investigate its clinical significances in lung cancer patients...
December 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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