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https://www.readbyqxmd.com/read/29339789/exosome-mediated-breast-cancer-chemoresistance-via-mir-155-transfer
#1
Juliana Carvalho Santos, Natália da Silva Lima, Luis Otavio Sarian, Ander Matheu, Marcelo Lima Ribeiro, Sophie Françoise Mauricette Derchain
Breast cancer remains the most prevalent cause of cancer mortality in woman worldwide due to the metastatic process and therapy resistance. Resistance against cancer therapy is partially attributed to cancer stem cells (CSCs). These cells arise from epithelial cells undergoing epithelial-to-mesenchymal transition (EMT) and might be responsible for tumor recurrence. In this study, we reported the relevance of miR-155 upregulation in chemoresistant cells associated with EMT. Notably, we found miR-155 induction in exosomes isolated from CSCs and resistant cells, followed by resistant cells' exosome transfer to the recipient sensitive cells...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339034/extracellular-matrix-proteins-and-carcinoembryonic-antigen-related-cell-adhesion-molecules-characterize-pancreatic-duct-fluid-exosomes-in-patients-with-pancreatic%C3%A2-cancer
#2
Jian Zheng, Jonathan M Hernandez, Alexandre Doussot, Linda Bojmar, Constantinos P Zambirinis, Bruno Costa-Silva, Elke J A H van Beek, Milica T Mark, Henrik Molina, Gokce Askan, Olca Basturk, Mithat Gonen, T Peter Kingham, Peter J Allen, Michael I D'Angelica, Ronald P DeMatteo, David Lyden, William R Jarnagin
BACKGROUND: Exosomes are nanovesicles that have been shown to mediate carcinogenesis in pancreatic ductal adenocarcinoma (PDAC). Given the direct communication of pancreatic duct fluid with the tumor and its relative accessibility, we aimed to determine the feasibility of isolating and characterizing exosomes from pancreatic duct fluid. METHODS: Pancreatic duct fluid was collected from 26 patients with PDAC (n = 13), intraductal papillary mucinous neoplasm (IPMN) (n = 8) and other benign pancreatic diseases (n = 5) at resection...
January 12, 2018: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/29335551/tumor-derived-exosomal-mir-1247-3p-induces-cancer-associated-fibroblast-activation-to-foster-lung-metastasis-of-liver-cancer
#3
Tian Fang, Hongwei Lv, Guishuai Lv, Ting Li, Changzheng Wang, Qin Han, Lexing Yu, Bo Su, Linna Guo, Shanna Huang, Dan Cao, Liang Tang, Shanhua Tang, Mengchao Wu, Wen Yang, Hongyang Wang
The communication between tumor-derived elements and stroma in the metastatic niche has a critical role in facilitating cancer metastasis. Yet, the mechanisms tumor cells use to control metastatic niche formation are not fully understood. Here we report that in the lung metastatic niche, high-metastatic hepatocellular carcinoma (HCC) cells exhibit a greater capacity to convert normal fibroblasts to cancer-associated fibroblasts (CAFs) than low-metastatic HCC cells. We show high-metastatic HCC cells secrete exosomal miR-1247-3p that directly targets B4GALT3, leading to activation of β1-integrin-NF-κB signaling in fibroblasts...
January 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29330297/characterization-and-evidence-of-the-mir-888-cluster-as-a-novel-cancer-network-in-prostate
#4
Tsuyoshi Hasegawa, Garrison Glavich, Mary Pahuski, Aleena M Short, Oliver John Semmes, Lifang Yang, Vitold Galkin, Richard R Drake, Aurora Esquela-Kerscher
Prostate cancer afflicts 1 in 7 men and is the second leading cause of male cancer-related deaths in the United States. MicroRNAs (miRNAs), an extensive class of ~22 nucleotide non-coding RNAs, are often aberrantly expressed in tissues and fluids from prostate cancer patients but the mechanism of how specific miRNAs regulate prostate tumorigenesis and metastasis are poorly understood. Here, miR-888 was identified as a novel prostate factor that promotes proliferation and migration. miR-888 resides within a genomic cluster of 7 miRNA genes (mir-892c, mir-890, mir-888, mir-892a, mir-892b, mir-891b, mir-891a) on human chromosome Xq27...
January 12, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29327816/brain-cortex-microglia-derived-exosomes-novel-nanoparticles-for-glioma-therapy
#5
Adriana-Natalia Murgoci, Dasa Cizkova, Petra Majerova, Eva Petrovova, Lubomir Medvecky, Isabelle Fournier, Michel Salzet
The function and integrity of nervous system require interactive exchanges among neurons and glial cells. Exosomes and other extracellular vesicles (EVs) are emerging as a key mediator of intercellular communication, capable to transfer nucleic acids, proteins and lipids, influencing numerous functional and pathological aspects of both donor and recipient cells. The immune response mediated by microglia derived exosomes are most prominently involved in the spread of neuroinflammation, neurodegenerative disorders and brain cancer...
January 12, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/29326054/size-based-separation-methods-of-circulating-tumor-cells
#6
Si-Jie Hao, Yuan Wan, Yi-Qiu Xia, Xin Zou, Si-Yang Zheng
Circulating tumor cells (CTCs) originate from the primary tumor mass and enter into the peripheral bloodstream. Compared to other "liquid biopsy" portfolios such as exosome, circulating tumor DNA/RNA (ctDNA/RNA), CTCs have incomparable advantages in analyses of transcriptomics, proteomics, and signal colocalization. Hence, CTCs hold the key to understanding the biology of metastasis and play a vital role in cancer diagnosis, treatment monitoring, and prognosis. Size-based enrichment featureS prominently in CTC isolation...
January 8, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29323722/exosomal-mirnas-as-novel-cancer-biomarkers-challenges-and-opportunities
#7
Mahsa Salehi, Mohammadreza Sharifi
A biomarker with high specificity and sensitivity, is a basic requirement for non-invasive cancer diagnosis. Exosomes are a type of lipid bilayer extracellular vesicles (EVs), containing different components, including proteins, lipids, DNA, messenger RNA (mRNA) and non-coding RNAs. Increasing evidence indicates that nucleic acids are protected by exosome lipid membrane. These vesicles are almost released from all cell types, into biological fluids. In cancer, the expression of microRNAs (miRNAs), located in the tumor cell-derived exosomes, is deregulated and it could be led to metastasis and therapy resistance...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29323124/mir-770-suppresses-the-chemo-resistance-and-metastasis-of-triple-negative-breast-cancer-via-direct-targeting-of-stmn1
#8
Yaming Li, Yiran Liang, Yuting Sang, Xiaojin Song, Hanwen Zhang, Ying Liu, Liyu Jiang, Qifeng Yang
Chemo-resistance and metastasis of triple negative breast cancer (TNBC) contributed the most of treatment failure in the clinic. MicroRNAs (miRNAs) have been proved to be involved in many biological processes and diseases. In this study, we aimed to determine the role of miR-770 in the regulation of chemo-resistance and metastasis of TNBC. Clinically, miR-770 was highly expressed in chemo-sensitive tissues and predicted a better prognosis of TNBC. Functionally, ectopic expression of miR-770 suppressed the doxorubicin-resistance of TNBC cell lines via regulation of apoptosis and tumor microenvironment, which was mediated by exosomes...
January 11, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29304904/liquid-biopsy-from-basic-research-to-clinical-practice
#9
Mónica Macías, Estibaliz Alegre, Angel Díaz-Lagares, Ana Patiño, Jose L Pérez-Gracia, Miguel Sanmamed, Rafael López-López, Nerea Varo, Alvaro González
Liquid biopsy refers to the molecular analysis in biological fluids of nucleic acids, subcellular structures, especially exosomes, and, in the context of cancer, circulating tumor cells. In the last 10 years, there has been an intensive research in liquid biopsy to achieve a less invasive and more precise personalized medicine. Molecular assessment of these circulating biomarkers can complement or even surrogate tissue biopsy. Because of this research, liquid biopsy has been introduced in clinical practice, especially in oncology, prenatal screening, and transplantation...
2018: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/29301753/exosomes-associated-with-human-ovarian-tumors-harbor-a-reversible-checkpoint-of-t-cell-responses
#10
Gautam N Shenoy, Jenni L Loyall, Orla Maguire, Vandana Iyer, Raymond J Kelleher, Hans Minderman, Paul K Wallace, Kunle Odunsi, Sathy V Balu-Iyer, Richard B Bankert
Nano-sized membrane-encapsulated extracellular vesicles isolated from the ascites fluids of ovarian cancer patients are identified as exosomes based on their biophysical and compositional characteristics. We report here that T cells pulsed with these tumor-associated exosomes during TCR-dependent activation inhibit various activation endpoints including translocation of NFkB and NFAT into the nucleus, upregulation of CD69 and CD107a, production of cytokines and cell proliferation. Additionally, the activation of virus-specific CD8+ T cells that are stimulated with the cognate viral peptides presented in the context of class I MHC is also suppressed by the exosomes...
January 4, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29299115/extracellular-mir-224-as-a-prognostic-marker-for-clear-cell-renal-cell-carcinoma
#11
Nakanori Fujii, Hiroshi Hirata, Koji Ueno, Junichi Mori, Shintaro Oka, Kosuke Shimizu, Yoshihisa Kawai, Ryo Inoue, Yoshiaki Yamamoto, Hiroaki Matsumoto, Tomoyuki Shimabukuro, Koichi Udoh, Yoshinobu Hoshii, Rajvir Dahiya, Hideyasu Matsuyama
Exosome-miRNAs (exo-miR) have recently been identified as modulators of cancer progression and distant metastasis. We previously found that intracellular miR-224 is up-regulated and significantly related to cancer invasion and metastasis in clear cell renal cell carcinoma (ccRCC). We therefore investigated the role of exosome miR-224 in ccRCC and explored the interaction between intra- and extracellular miR-224 in renal cell carcinoma. To validate the method for isolating exosomes from blood samples or cell culture media, we examined exosome morphology using transmission electron microscope (TEM)...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29296725/replenishing-exosomes-from-older-bone-marrow-stromal-cells-with-mir-340-inhibits-myeloma-related-angiogenesis
#12
Tomohiro Umezu, Satoshi Imanishi, Kenko Azuma, Chiaki Kobayashi, Seiichiro Yoshizawa, Kazuma Ohyashiki, Junko H Ohyashiki
The study of bone marrow stromal cells (BMSCs) and the exosomes they secrete is considered promising for cancer therapy. However, little is known about the effect of donor age on BMSCs. In the present study, we investigated the therapeutic potential of BMSC exosomes derived from donors of different ages using an in vivo model of hypoxic bone marrow in multiple myeloma (MM). We found that donor age was strongly related to senescent changes in BMSCs. Exosomes derived from young BMSCs significantly inhibited MM-induced angiogenesis in Matrigel plugs...
May 23, 2017: Blood Advances
https://www.readbyqxmd.com/read/29290969/low-plasma-levels-of-mir-101-are-associated-with-tumor-progression-in-gastric-cancer
#13
Taisuke Imamura, Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Wataru Okajima, Takuma Ohashi, Jun Kiuchi, Keiji Nishibeppu, Toshiyuki Kosuga, Hirotaka Konishi, Atsushi Shiozaki, Kazuma Okamoto, Hitoshi Fujiwara, Eigo Otsuji
Background: Several studies have identified the decreased expression of the tumor suppressor miR-101 in various cancers. In this study, we tested miR-101 as a potential therapeutic target and novel plasma biomarker for gastric cancer (GC). Results: The miR-101 expression level was significantly lower in GC tissues (P = 0.0038) and GC cell lines (P = 0.0238) than in normal gastric mucosa. Both exosomal and plasma miR-101 were significantly downregulated in GC patients compared with healthy volunteers (P = 0...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290766/integrated-analysis-of-long-non-coding-rna-and-mrna-expression-profile-in-pancreatic-cancer-derived-exosomes-treated-dendritic-cells-by-microarray-analysis
#14
Jionghuang Chen, Shaowen Wang, Shengnan Jia, Guoping Ding, Guixing Jiang, Liping Cao
Background: Pancreatic cancer is a devastating disease with a low five-year survival rate. Dendritic cells (DCs), which are the most potent antigen-presenting cells in the human body, play a pivotal role in the immune response. However, few studies have investigated the role of pancreatic cancer-derived exosomes (PEXs) in DC-meditated immune escape. The expression profiles of long noncoding RNAs (lncRNAs) and mRNAs of PEX-treated dendritic cells are unknown. Methods: We used integrated lncRNA and mRNA microarrays to determine the expression profiles of PEX-treated DCs and normal DCs derived from five healthy donors...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29290284/oral-cancer-derived-exosomal-nap1-enhances-cytotoxicity-of-natural-killer-cells-via-the-irf-3-pathway
#15
Yingnan Wang, Xing Qin, Xueqin Zhu, Wanjun Chen, Jianjun Zhang, Wantao Chen
OBJECTIVE: To examine the effects of oral cancer-derived exosomes (OCEXs) on natural killer (NK) cells and to explore the underlying mechanism. MATERIALS AND METHODS: OCEXs were isolated from the cell culture supernatant of oral cancer (OC) cells using ultrafiltration and affinity chromatography and were identified using electron microscopy, nanoparticle tracking analysis (NTA) and immunoblotting. The effects of OCEXs on NK cells were analyzed using laser scanning confocal microscopy and several functional assays of NK cells...
January 2018: Oral Oncology
https://www.readbyqxmd.com/read/29289420/exosome-and-mesenchymal-stem-cell-cross-talk-in-the-tumor-microenvironment
#16
REVIEW
Theresa L Whiteside
Mesenchymal stem cells (MSCs) are a major component of the tumor microenvironment (TME) and play a key role in promoting tumor progression. The tumor uses exosomes to co-opt MSCs and re-program their functional profile from normally trophic to pro-tumorigenic. These tumor-derived small vesicles called "TEX" carry and deliver a cargo rich in proteins and nucleic acids to MSCs. Upon interactions with surface receptors on MSCs and uptake of the exosome cargo by MSCs, molecular, transcriptional and translational changes occur that convert MSCs into producers of factors that are necessary for tumor growth and that also alter functions of non-tumor cells in the TME...
December 27, 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/29285843/exosomes-serve-as-nano-particles-to-suppress-tumor-growth-and-angiogenesis-in-gastric-cancer-by-delivering-hgf-sirna
#17
Haiyang Zhang, Yi Wang, Ming Bai, Junyi Wang, Kegan Zhu, Rui Liu, Shaohua Ge, JiaLu Li, Tao Ning, Ting Deng, Qian Fan, Hongli Li, Wu Sun, Guoguang Ying, Yi Ba
Exosomes derived from cells have been found to mediate signal transduction between cells and to act as efficient carriers to deliver drugs and small RNAs. HGF is known to promote the growth of both cancer cells and vascular cells, and the HGF-cMET pathway is a potential clinical target. Here, we characterized the inhibitory effect of HGF siRNA on tumor growth and angiogenesis in gastric cancer. In addition, we showed that HGF siRNA packed in exosomes can be transported into cancer cells, where it dramatically down-regulates HGF expression...
December 29, 2017: Cancer Science
https://www.readbyqxmd.com/read/29284398/mechanisms-of-radiation-bystander-and-non-targeted-effects-implications-to-radiation-carcinogenesis-and-radiotherapy
#18
Rasoul Yahyapour, Elahe Motevaseli, Abolhasan Rezaeyan, Hamid Abdollahi, Bagher Farhood, Mohsen Cheki, Masoud Najafi, Vilmar Villa
Knowledge of radiobiology is of paramount importance to be able to grasp and have an in-depth understanding of the consequences of ionizing radiation. One of the most important effects of this physical stressor's interaction to targeted and non-targeted cells, tissues and organs is on the late effects on the development of primary and secondary cancers. Thus, an in-depth understanding of the mechanisms of radiation carcinogenesis remain to be elucidated, and some studies have demonstrated or proposed a role of non-targeted effect in excess risk of cancer incidence...
December 29, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/29283887/exosomal-micrornas-derived-from-colorectal-cancer-associated-fibroblasts-role-in-driving-cancer-progression
#19
Rahul Bhome, Rebecca W Goh, Marc D Bullock, Nir Pillar, Stephen M Thirdborough, Massimiliano Mellone, Reza Mirnezami, Dieter Galea, Kirill Veselkov, Quan Gu, Timothy J Underwood, John N Primrose, Olivier De Wever, Noam Shomron, A Emre Sayan, Alex H Mirnezami
Colorectal cancer is a global disease with increasing incidence. Mortality is largely attributed to metastatic spread and therefore, a mechanistic dissection of the signals which influence tumor progression is needed. Cancer stroma plays a critical role in tumor proliferation, invasion and chemoresistance. Here, we sought to identify and characterize exosomal microRNAs as mediators of stromal-tumor signaling. In vitro, we demonstrated that fibroblast exosomes are transferred to colorectal cancer cells, with a resultant increase in cellular microRNA levels, impacting proliferation and chemoresistance...
December 28, 2017: Aging
https://www.readbyqxmd.com/read/29282861/biological-functions-and-current-advances-in-isolation-and-detection-strategies-for-exosome-nanovesicles
#20
REVIEW
Kseniia Boriachek, Md Nazmul Islam, Andreas Möller, Carlos Salomon, Nam-Trung Nguyen, Md Shahriar A Hossain, Yusuke Yamauchi, Muhammad J A Shiddiky
Exosomes are nanoscale (≈30-150 nm) extracellular vesicles of endocytic origin that are shed by most types of cells and circulate in bodily fluids. Exosomes carry a specific composition of proteins, lipids, RNA, and DNA and can work as cargo to transfer this information to recipient cells. Recent studies on exosomes have shown that they play an important role in various biological processes, such as intercellular signaling, coagulation, inflammation, and cellular homeostasis. These functional roles are attributed to their ability to transfer RNA, proteins, enzymes, and lipids, thereby affecting the physiological and pathological conditions in various diseases, including cancer and neurodegenerative, infectious, and autoimmune diseases (e...
December 28, 2017: Small
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