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Exosomes and lung

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https://www.readbyqxmd.com/read/29138862/liver-kinase%C3%A2-b1-restoration-promotes-exosome-secretion-and-motility-of-lung-cancer-cells
#1
Cheng Zhang, Xiang Xiao, Minyi Chen, Hitham Aldharee, Yanfang Chen, Weiwen Long
Liver kinase B1 (LKB1) regulates a variety of cellular functions, including cell polarity, energy metabolism and cell growth, by targeting multiple signaling pathways such as AMPK/mTOR and p53. LKB1 functions as a tumor suppressor in sporadic cancers including lung cancer. Extracellular vesicles such as exosomes secreted by cancer cells modulate the tumor microenvironment and progression by targeting both tumor cells (autocrine actions) and other types of cells associated with tumors (paracrine actions). While the roles of LKB1 in cellular signaling in general is well-studied, its specific role in exosome-mediated signaling remains to be explored...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29137230/adipocyte-derived-exosomes-promote-lung-cancer-metastasis-by-increasing-mmp9-activity-via-transferring-mmp3-to-lung-cancer-cells
#2
Jiaoli Wang, Yilei Wu, Jufeng Guo, Xuefeng Fei, Lei Yu, Shenglin Ma
Obesity is involved in tumor progression. However, the corresponding mechanisms remain largely unknown. Here, we report that adipocytes increase the invasive ability of tumor cells by producing exosomes with a high level of MMP3. Compared with 3T3-L1 cells, 3T3-L1 adipocytes are enriched in MMP3 protein and can transfer MMP3 to 3LL lung cancer cells. Then, MMP3 activates MMP9 activity in 3LL cells and promotes invasion in vitro and in vivo via MMP9. Furthermore, MMP3 protein levels in lung tumor tissues from obese patients are increased compared with those of non-obese patients...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29127370/exosomal-mir-126-as-a-circulating-biomarker-in-non-small-cell-lung-cancer-regulating-cancer-progression
#3
Franco Grimolizzi, Federica Monaco, Francesca Leoni, Massimo Bracci, Sara Staffolani, Cristiana Bersaglieri, Simona Gaetani, Matteo Valentino, Monica Amati, Corrado Rubini, Franca Saccucci, Jiri Neuzil, Marco Tomasetti, Lory Santarelli
Lung cancer is one of the leading causes of cancer-related deaths. It is diagnosed mostly at the locally advanced or metastatic stage. Recently, micro RNAs (miRs) and their distribution in circulation have been implicated in physiological and pathological processes. In this study, miR-126 was evaluated in serum, exosome and exosome-free serum fractions in non-small cell lung cancer (NSCLC) patients at early and advanced stages, and compared with healthy controls. Down-regulation of miR-126 was found in serum of advanced stage NSCLC patients...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29115853/extracellular-vesicles-new-players-in-lung-immunity
#4
Yu Fujita, Tsukasa Kadota, Jun Araya, Takahiro Ochiya, Kazuyoshi Kuwano
Extracellular vesicles (EVs), such as exosomes and microvesicles, play an important autocrine/paracrine role in intercellular communication. Details on the involvement of EVs in the pathogenesis of lung diseases have emerged over the past several years. Moreover, EVs package numerous DNA, proteins, mRNAs, and microRNAs (miRNAs) that can regulate immune responses in recipient cells. Almost all respiratory cells release EVs, and these EVs can have protective or detrimental functions depending on the type of donor cells, type of stimuli, and components...
November 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29109770/epiregulin-promotes-lung-metastasis-of-salivary-adenoid-cystic-carcinoma
#5
Wen-Wen Yang, Lin-Qian Yang, Fei Zhao, Chu-Wen Chen, Li-Hua Xu, Jia Fu, Sheng-Lin Li, Xi-Yuan Ge
Salivary adenoid cystic carcinoma (SACC) is a peculiar malignant tumor, characterized by its slow but inexorable growth, with a high incidence of lung metastasis and poor prognosis. Here, we show the upregulated expression of EGFR ligand epiregulin in a subset of SACC cells correlates with lung metastasis and unfavorable outcome in patients with SACC. We found that upregulation of epiregulin in SACC cells induced epithelial-mesenchymal transition by regulating GLI1/E-cadherin. Elevated epiregulin increased the expression of pro-angiogenic factors, such as VEGFA, bFGF, and IL-8...
2017: Theranostics
https://www.readbyqxmd.com/read/29105655/pre-metastatic-cancer-exosomes-induce-immune-surveillance-by-patrolling-monocytes-at-the-metastatic-niche
#6
Michael P Plebanek, Nicholas L Angeloni, Elena Vinokour, Jia Li, Anna Henkin, Dalia Martinez-Marin, Stephanie Filleur, Reshma Bhowmick, Jack Henkin, Stephen D Miller, Igal Ifergan, Yesung Lee, Iman Osman, C Shad Thaxton, Olga V Volpert
Metastatic cancers produce exosomes that condition pre-metastatic niches in remote microenvironments to favor metastasis. In contrast, here we show that exosomes from poorly metastatic melanoma cells can potently inhibit metastasis to the lung. These "non-metastatic" exosomes stimulate an innate immune response through the expansion of Ly6C(low) patrolling monocytes (PMo) in the bone marrow, which then cause cancer cell clearance at the pre-metastatic niche, via the recruitment of NK cells and TRAIL-dependent killing of melanoma cells by macrophages...
November 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/29104495/exosomal-mir-7-mediates-bystander-autophagy-in-lung-after-focal-brain-irradiation-in-mice
#7
Shang Cai, Geng-Sheng Shi, Hui-Ying Cheng, Ya-Nan Zeng, Gen Li, Meng Zhang, Man Song, Ping-Kun Zhou, Ye Tian, Feng-Mei Cui, Qiu Chen
This study investigated whether exosomal microRNA-7 (miR-7) mediates lung bystander autophagy after focal brain irradiation in mice. After 10 Gy or sham irradiation of mice brains, lung tissues were extracted for the detection of autophagy markers by immunohistochemistry, western blotting, and quantitative real-time reverse transcription PCR (qRT-PCR), meanwhile the brains were dissociated, the neuron/astrocyte/microglia/oligodendrocyte were isolated, and the miR-7 expression in each population were detected, respectively...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29095265/identification-of-differential-expressed-pe-exosomal-mirna-in-lung-adenocarcinoma-tuberculosis-and-other-benign-lesions
#8
Yan Wang, Yan-Mei Xu, Ye-Qing Zou, Jin Lin, Bo Huang, Jing Liu, Jing Li, Jing Zhang, Wei-Ming Yang, Qing-Hua Min, Shu-Qi Li, Qiu-Fang Gao, Fan Sun, Qing-Gen Chen, Lei Zhang, Yu-Huan Jiang, Li-Bin Deng, Xiao-Zhong Wang
Pleural effusion (PE) is a common clinical complication of many pulmonary and systemic diseases, including lung cancer and tuberculosis. Nevertheless, there is no clinical effective biomarker to identify the cause of PE. We attempted to investigate differential expressed exosomal miRNAs in PEs of lung adenocarcinoma (APE), tuberculous (TPE), and other benign lesions (NPE) by using deep sequencing and quantitative polymerase chain reaction (qRT-PCR). As a result, 171 differentiated miRNAs were observed in 3 groups of PEs, and 11 significantly differentiated exosomal miRNAs were validated by qRT-PCR...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29093708/dynamics-of-heat-shock-protein-70-serum-levels-as-a-predictor-of-clinical-response-in-non-small-cell-lung-cancer-and-correlation-with-the-hypoxia-related-marker-osteopontin
#9
Christian Ostheimer, Sophie Gunther, Matthias Bache, Dirk Vordermark, Gabriele Multhoff
Hypoxia mediates resistance to radio(chemo)therapy (RT) by stimulating the synthesis of hypoxia-related genes, such as osteopontin (OPN) and stress proteins, including the major stress-inducible heat shock protein 70 (Hsp70). Apart from its intracellular localization, Hsp70 is also present on the plasma membrane of viable tumor cells that actively release it in lipid vesicles with biophysical characteristics of exosomes. Exosomal Hsp70 contributes to radioresistance while Hsp70 derived from dying tumor cells can serve as a stimulator of immune cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29073517/quantitative-detection-of-exosomal-microrna-extracted-from-human-blood-based-on-surface-enhanced-raman-scattering
#10
Dandan Ma, Caixia Huang, Jing Zheng, Jianru Tang, Jishan Li, Jinfeng Yang, Ronghua Yang
Since the nature of the exosomal lipid bilayer can allow miRNAs to be protected from degradation by cellular RNAses in body fluids, exosomal microRNA (miRNA) has become an ideal source of non-invasive biomarkers for the early diagnosis and prognosis. In this paper, a new surface-enhanced Raman scattering (SERS) analysis strategy combining stable SERS reporter element and duplex-specific nuclease (DSN)-assisted signal amplification for quantitative detection of exosomal miRNA extracted from human blood is proposed...
October 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29062835/toward-exosome-based-therapeutics-isolation-heterogeneity-and-fit-for-purpose-potency
#11
Gareth R Willis, Stella Kourembanas, S Alex Mitsialis
Exosomes are defined as submicron (30-150 nm), lipid bilayer-enclosed extracellular vesicles (EVs), specifically generated by the late endosomal compartment through fusion of multivesicular bodies with the plasma membrane. Produced by almost all cells, exosomes were originally considered to represent just a mechanism for jettisoning unwanted cellular moieties. Although this may be a major function in most cells, evolution has recruited the endosomal membrane-sorting pathway to duties beyond mere garbage disposal, one of the most notable examples being its cooption by retroviruses for the generation of Trojan virions...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29055389/could-lung-cancer-exosomes-induce-apoptosis-of-natural-killer-cells-through-the-p75ntr-prongf-sortilin-axis
#12
Ming-Chuang Zhu, Peng Xiong, Guo-Liang Li, Min Zhu
Lung cancer is the leading cause of cancer-related death worldwide. Tumor exosomes play an important role in the development of lung cancer. Previous studies indicated that tumor exosomes derived from lung cancer cells contained abundant sortilin. Sortilin is a member of the vacuolar protein sorting 10 protein (VPS10P) family of receptors that act as co-receptors for p75NTR and play an independent role in cell death induced by proNGF. Recently, a study showed that proNGF could mediate the death of natural killer (NK) cells through binding to the p75NTR-sortilin complex...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29054369/exosome-is-a-mechanism-of-intercellular-drug-transfer-application-of-quantitative-pharmacology
#13
Jin Wang, Bertrand Z Yeung, Minjian Cui, Cody J Peer, Ze Lu, William D Figg, M Guillaume Wientjes, Sukyung Woo, Jessie L-S Au
PURPOSE: Exosomes are small membrane vesicles (30-100nm in diameter) secreted by cells into extracellular space. The present study evaluated the effect of chemotherapeutic agents on exosome production and/or release, and quantified the contribution of exosomes to intercellular drug transfer and pharmacodynamics. METHODS: Human cancer cells (breast MCF7, breast-to-lung metastatic LM2, ovarian A2780 and OVCAR4) were treated with paclitaxel (PTX, 2-1000nM) or doxorubicin (DOX, 20-1000nM) for 24-48h...
October 18, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29047044/exosomes-for-the-enhanced-tissue-bioavailability-and-efficacy-of-curcumin
#14
Farrukh Aqil, Radha Munagala, Jeyaprakash Jeyabalan, Ashish Kumar Agrawal, Ramesh Gupta
Exosomes are extracellular microvesicles with a particle size of 30-100 nm and carry a cargo of proteins, lipids, RNA, and DNA. Their properties of shuttling in-and-out of the cells suggest that these particles can be exploited as a nano drug carrier. In this manuscript, we show that curcumin can be delivered effectively using milk-derived exosomes. Curcumin when mixed with exosomes in the presence of 10% ethanol:acetonitrile (1:1) provided a drug load of 18-24%, and the formulation stored at - 80°C was stable for 6 months as determined by particle size analysis, drug load, and antiproliferative activity...
November 2017: AAPS Journal
https://www.readbyqxmd.com/read/29038531/trpa1-fgfr2-binding-event-is-a-regulatory-oncogenic-driver-modulated-by-mirna-142-3p
#15
Jonathan Berrout, Eleni Kyriakopoulou, Lavanya Moparthi, Alexandra S Hogea, Liza Berrout, Cristina Ivan, Mihaela Lorger, John Boyle, Chris Peers, Stephen Muench, Jacobo Elies Gomez, Xin Hu, Carolyn Hurst, Thomas Hall, Sujanitha Umamaheswaran, Laura Wesley, Mihai Gagea, Michael Shires, Iain Manfield, Margaret A Knowles, Simon Davies, Klaus Suhling, Yurema Teijeiro Gonzalez, Neil Carragher, Kenneth Macleod, N Joan Abbott, George A Calin, Nikita Gamper, Peter M Zygmunt, Zahra Timsah
Recent evidence suggests that the ion channel TRPA1 is implicated in lung adenocarcinoma (LUAD), where its role and mechanism of action remain unknown. We have previously established that the membrane receptor FGFR2 drives LUAD progression through aberrant protein-protein interactions mediated via its C-terminal proline-rich motif. Here we report that the N-terminal ankyrin repeats of TRPA1 directly bind to the C-terminal proline-rich motif of FGFR2 inducing the constitutive activation of the receptor, thereby prompting LUAD progression and metastasis...
October 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29022142/microvesicle-mediated-delivery-of-mir-1343-impact-on-markers-of-fibrosis
#16
Lindsay R Stolzenburg, Ann Harris
Tissue fibrosis, the development of fibrous connective tissue as a result of injury or damage, is associated with many common diseases and cannot be treated effectively. The complex biological processes accompanying fibrosis often involve aberrant signaling through the transforming growth factor beta (TGF-β) pathway. In the search for mechanisms to repress this signaling, microRNAs have emerged as a novel class of molecules capable of targeting single members of the TGF-β pathway, or the pathway as a whole...
October 11, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28990243/micrornas-a-novel-potential-biomarker-for-diagnosis-and-therapy-in-patients-with-non-small-cell-lung-cancer
#17
REVIEW
Qun Zhou, Shao-Xin Huang, Feng Zhang, Shu-Jun Li, Cong Liu, Yong-Yong Xi, Liang Wang, Xin Wang, Qi-Qiang He, Cheng-Cao Sun, De-Jia Li
BACKGROUND: Lung cancer is still one of the most serious causes of cancer-related deaths all over the world. MicroRNAs (miRNAs) are defined as small non-coding RNAs which could play a pivotal role in post-transcriptional regulation of gene expression. Increasing evidence demonstrated dysregulation of miRNA expression associates with the development and progression of NSCLC. AIMS: To emphasize a variety of tissue-specific miRNAs, circulating miRNAs and miRNA-derived exosomes could be used as potential diagnostic and therapeutic biomarkers in NSCLC patients...
October 8, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28985201/-good-things-come-in-small-packages-application-of-exosome-based-therapeutics-in-neonatal-lung-injury
#18
REVIEW
Gareth R Willis, S Alex Mitsialis, Stella Kourembanas
Infants born at very low gestational age contribute disproportionately to neonatal morbidity and mortality. Advancements in antenatal steroid therapies and surfactant replacement have favored the survival of infants with ever-more immature lungs. Despite such advances in medical care, cardiopulmonary and neurological impairment prevail in constituting the major adverse outcomes for neonatal intensive care unit (NICU) survivors. With no single effective therapy for either the prevention or treatment of such neonatal disorders, the need for new tools to treat and reduce risk of further complications associated with extreme preterm birth is urgent...
October 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28982587/engineering-macrophage-derived-exosomes-for-targeted-paclitaxel-delivery-to-pulmonary-metastases-in-vitro-and-in-vivo-evaluations
#19
Myung Soo Kim, Matthew J Haney, Yuling Zhao, Dongfen Yuan, Irina Deygen, Natalia L Klyachko, Alexander V Kabanov, Elena V Batrakova
Exosomes have recently emerged as a promising drug delivery system with low immunogenicity, high biocompatibility, and high efficacy of delivery. We demonstrated earlier that macrophage-derived exosomes (exo) loaded with a potent anticancer agent paclitaxel (PTX) represent a novel nanoformulation (exoPTX) that shows high anticancer efficacy in a mouse model of pulmonary metastases. We now report the manufacture of targeted exosome-based formulations with superior structure and therapeutic indices for systemic administration...
October 2, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28949447/exosomal-proteins-as-prognostic-biomarkers-in-non-small-cell-lung-cancer
#20
(no author information available yet)
BACKGROUND: Use of exosomes as biomarkers in non-small cell lung cancer (NSCLC) is an intriguing approach in the liquid-biopsy era. Exosomes are nano-sized vesicles with membrane-bound proteins that reflect their originating cell. Prognostic biomarkers are needed to improve patient selection for optimal treatment. We here evaluate exosomes by protein phenotyping as a prognostic biomarker in NSCLC. METHODS: Exosomes from plasma of 276 NSCLC patients were phenotyped using the Extracellular Vesicle Array; 49 antibodies captured the proteins on the exosomes, and a cocktail of biotin-conjugated antibodies binding the general exosome markers CD9, CD81 and CD63 was used to visualise the captured exosomes...
December 2016: Molecular Oncology
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