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Cancer exosome

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https://www.readbyqxmd.com/read/28524163/dsdna-containing-exosomes-the-culprit-in-chemotherapy-induced-diarrhea
#1
Paul Kurywchak, Raghu Kalluri
Chemotherapy is a predominant strategy to treat cancer and is often associated with toxicities like severe diarrhea that puts patients at additional risk and can hinder treatment strategies. Lian et al. recently explored the immune-mediated mechanisms of Irinotecan-induced diarrhea in colorectal cancer and found that double-stranded DNA in small vesicles can launch inflammation pathways in immune cells through the cytosolic DNA sensor AIM2.
May 19, 2017: Cell Research
https://www.readbyqxmd.com/read/28523512/reduced-adipogenesis-after-lung-tumor-exosomes-priming-in-human-mesenchymal-stem-cells-via-tgf%C3%AE-signaling-pathway
#2
Shihua Wang, Xiaoxia Li, Meiqian Xu, Jing Wang, Robert Chunhua Zhao
A key feature of cancer cachexia is the loss of adipose tissue, mainly due to increased lipolysis and an impairment of adipogenesis. Recent findings have shown that cancer exosomes promoted lipolysis in adipose tissue. However, effects of cancer exosomes on adipogenesis were not reported. In this study, we found that lung cancer exosomes could be internalized by human adipose tissue-derived mesenchymal stem cells (hAD-MSCs) and significantly inhibited hAD-MSC adipogenesis as demonstrated by Oil Red O staining and decreased expression of adipogenic-specific genes...
May 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28523150/cancer-s-smart-bombs-tumor-derived-exosomes-target-lung-epithelial-cells-triggering-pre-metastatic-niche-formation
#3
EDITORIAL
Dionysios Antonopoulos, Nikolaos A A Balatsos, Konstantinos I Gourgoulianis
No abstract text is available yet for this article.
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28521461/kras-and-braf-mutations-in-serum-exosomes-from-patients-with-colorectal-cancer-in-a-chinese-population
#4
Yi-Xin Hao, Yong-Mei Li, Ming Ye, Yan-Yan Guo, Qiu-Wen Li, Xiu-Mei Peng, Qi Wang, Shu-Fang Zhang, Hui-Xia Zhao, He Zhang, Guang-Hui Li, Jian-Hua Zhu, Wen-Hua Xiao
The efficacy of epidermal growth factor receptor- targeted therapy is significantly associated with Kirsten rat sarcoma viral oncogene homolog (KRAS) and B-raf serine/threonine kinase proto-oncogene (BRAF) mutation in patients with colorectal cancer (CRC), for which the standard gene testing is currently performed using tumor tissue DNA. The aim of the present study was to compare the presence of KRAS and BRAF mutations in the serum exosome and primary tumor tissue from patients with CRC. Genomic DNA were extracted from the tumor tissues of 35 patients with histologically-confirmed CRC and exosomal mRNA were obtained from peripheral blood, which were collected from the corresponding patients prior to surgery...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521391/role-of-stem-cell-derived-exosomes-in-cancer
#5
Junyi Wu, Zhen Qu, Zi-Wei Fei, Jun-Hua Wu, Chun-Ping Jiang
Exosomes are small, extracellular membrane- enclosed vesicles that contain a variety of molecules, including proteins, DNA, mRNA and non-coding RNA; these vesicles have been defined as new tools for intercellular communication between cells. Numerous types of cells, including stem cells, secrete exosomes into the extracellular environment, and are significant communicators in the tumor microenvironment. Stem cells are a unique cell population defined by their ability to indefinitely self-renew, differentiate into a variety of cell lines, and form clonal cell populations...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28516087/dna-sequence-analysis-in-clinical-medicine-proceeding-cautiously
#6
REVIEW
Moyra Smith
Delineation of underlying genomic and genetic factors in a specific disease may be valuable in establishing a definitive diagnosis and may guide patient management and counseling. In addition, genetic information may be useful in identification of at risk family members. Gene mapping and initial genome sequencing data enabled the development of microarrays to analyze genomic variants. The goal of this review is to consider different generations of sequencing techniques and their application to exome sequencing and whole genome sequencing and their clinical applications...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28512335/arginine-rich-cell-penetrating-peptide-modified-extracellular-vesicles-for-active-macropinocytosis-induction-and-efficient-intracellular-delivery
#7
Ikuhiko Nakase, Kosuke Noguchi, Ayako Aoki, Tomoka Takatani-Nakase, Ikuo Fujii, Shiroh Futaki
Extracellular vesicles (EVs) including exosomes have been shown to play crucial roles in cell-to-cell communication because of their ability to carry biofunctional molecules (e.g., microRNAs and enzymes). EVs also have pharmaceutical advantages and are highly anticipated to be a next-generation intracellular delivery tool. Here, we demonstrate an experimental technique that uses arginine-rich cell-penetrating peptide (CPP)-modified EVs to induce active macropinocytosis for effective cellular EV uptake. Modification of arginine-rich CPPs on the EV membrane resulted in the activation of the macropinocytosis pathway, and the number of arginine residues in the peptide sequences affected the cellular EV uptake efficiency...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28508366/isolation-and-proteomic-analysis-of-microvesicles-and-exosomes-from-ht22-cells-and-primary-neurons
#8
Richard Witas, Dale Chaput, Hirah Khan, Stanley M Stevens, David Kang
Exosomes and microvesicles are extracellular vesicles (EVs) released by most cell types. The role of EVs as a method of intercellular communication has led to these vesicles becoming a major area of interest in a variety of scientific fields including neuroscience. Emerging evidence is now demonstrating that the biomolecular composition of EVs, especially exosomes, can play a role in the progression of disease including various neurodegenerative diseases and cancer. In addition to the miRNA profiles of EVs, these vesicles also show interesting changes in protein expression profiles under different physiological and pathological conditions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28506269/the-emerging-roles-and-therapeutic-potential-of-exosomes-in-epithelial-ovarian-cancer
#9
REVIEW
Xiaoduan Li, Xipeng Wang
Ovarian cancer (OC) is one of the three types of malignant tumors in the female reproductive system, and epithelial ovarian cancer (EOC) is its most typical form. Due to the asymptomatic nature of the early stages and resistance to chemotherapy, EOC has both a poor prognosis and a high fatality rate. Current treatments for OC are very limited, and the 5-years survival rate is approximately 30%. Exosomes, which are microvesicles ranging from approximately 30-100 nm in size that are secreted by living cells, can be produced from different cell types and detected in various body fluids...
May 15, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28505322/exosomes-in-toxicology-relevance-to-chemical-exposure-and-pathogenesis-of-environmentally-linked-diseases
#10
Dilshan S Harischandra, Shivani Ghaisas, Dharmin Rokad, Anumantha G Kanthasamy
Chronic exposure to environmental toxins has been known to initiate or aggravate various neurological disorders, carcinomas and other adverse health effects. Uptake by naïve cells of pathogenic factors such as danger-associated molecules, mRNAs, miRNAs or aggregated proteins leads to disruption in cellular homeostasis further resulting in inflammation and disease propagation. While early research tended to focus solely on exosomal removal of unwanted cellular contents, more recent reports indicate that these nano-vesicles play an active role in intercellular signaling...
May 15, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28500324/labeling-extracellular-vesicles-for-nanoscale-flow-cytometry
#11
Aizea Morales-Kastresana, Bill Telford, Thomas A Musich, Katherine McKinnon, Cassandra Clayborne, Zach Braig, Ari Rosner, Thorsten Demberg, Dionysios C Watson, Tatiana S Karpova, Gordon J Freeman, Rosemarie H DeKruyff, George N Pavlakis, Masaki Terabe, Marjorie Robert-Guroff, Jay A Berzofsky, Jennifer C Jones
Extracellular vesicles (EVs), including exosomes and microvesicles, are 30-800 nm vesicles that are released by most cell types, as biological packages for intercellular communication. Their importance in cancer and inflammation makes EVs and their cargo promising biomarkers of disease and cell-free therapeutic agents. Emerging high-resolution cytometric methods have created a pressing need for efficient fluorescent labeling procedures to visualize and detect EVs. Suitable labels must be bright enough for one EV to be detected without the generation of label-associated artifacts...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28488110/platelets-as-crucial-partners-for-tumor-metastasis-from-mechanistic-aspects-to-pharmacological-targeting
#12
REVIEW
Annalisa Contursi, Angela Sacco, Rosalia Grande, Melania Dovizio, Paola Patrignani
Platelets are anucleated cells that circulate in the blood as sentinels of tissue integrity. In fact, they are rich in a plethora of proteins and other factors stored in different granules which they selectively release upon stimulation. Moreover, platelets synthesize a vast number of lipids and release various types of vesicles, including exosomes which are rich in genetic material. Platelets possess a central function to interact with other cell types, including inflammatory cells and cancer cells. Recent findings have enlightened the capacity of platelets to induce changes in the phenotype of cancer cells which acquire invasiveness thus enhancing their metastatic potential...
May 9, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28486412/chloramidine-bisindolylmaleimide-i-mediated-inhibition-of-exosome-and-microvesicle-release-and-enhanced-efficacy-of-cancer-chemotherapy
#13
Uchini S Kosgodage, Rita P Trindade, Paul R Thompson, Jameel M Inal, Sigrun Lange
Microvesicle (MV) release from tumour cells influences drug retention, contributing to cancer drug resistance. Strategically regulating MV release may increase drug retention within cancer cells and allow for lower doses of chemotherapeutic drugs. The contribution of exosomes to drug retention still remains unknown. Potential exosome and MV (EMV) biogenesis inhibitors, tested on human prostate cancer (PC3) cells for their capacity to inhibit EMV release, were also tested on PC3 and MCF-7 (breast cancer) cells for improving chemotherapy...
May 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28481180/trophoblast-glycoprotein-tpgb-5t4-in-human-placenta-expression-regulation-and-presence-in-extracellular-microvesicles-and-exosomes
#14
S M K Alam, S Jasti, S K Kshirsagar, D S Tannetta, R A Dragovic, C W Redman, I L Sargent, H C Hodes, T L Nauser, T Fortes, A M Filler, K Behan, D R Martin, T A Fields, B K Petroff, M G Petroff
BACKGROUND: Many parallels exist between growth and development of the placenta and that of cancer. One parallel is shared expression of antigens that may have functional importance and may be recognized by the immune system. Here, we characterize expression and regulation of one such antigen, Trophoblast glycoprotein (TPGB; also called 5T4), in the placenta across gestation, in placentas of preeclamptic (PE) pregnancies, and in purified microvesicles and exosomes. METHODS: Trophoblast glycoprotein expression was analyzed by real-time reverse transcription-polymerase chain reaction (RT-PCR), Western blot, and immunohistochemistry...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28477015/global-scientific-trends-on-exosome-research-during-2007-2016-a%C3%A2-bibliometric-analysis
#15
REVIEW
Wang Yiran, Wang Qijin, Wei Xianzhao, Shao Jie, Zhao Jian, Zhang Zicheng, Chen Ziqiang, Bai Yushu, Wang Ning, Wang Yajie, Li Ming, Zhai Xiao
BACKGROUND: Exosomes are small vesicles of endosomal origin, and they can be used for the diagnosis and the treatment. However, limited data were for the evaluation of the trend of exosome researches. This study aims to investigate the trend of exosome researches and compare the contribution of research from different regions, organizations and authors. METHODS: Exosome related publications from 2007 to 2016 were retrieved from the Web of Science database. Excel, GraphPad Prism 5 and VOSviewer software were used to analyze the research trend...
April 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28476099/gamma-glutamyltransferase-activity-in-exosomes-as-a-potential-marker-for-prostate-cancer
#16
Kyojiro Kawakami, Yasunori Fujita, Yoko Matsuda, Tomio Arai, Kengo Horie, Koji Kameyama, Taku Kato, Koichi Masunaga, Yutaka Kasuya, Masashi Tanaka, Kosuke Mizutani, Takashi Deguchi, Masafumi Ito
BACKGROUND: Exosomes or extracellular vesicles have the potential as a diagnostic marker for various diseases including cancer. In order to identify novel exosomal markers for prostate cancer (PC), we performed proteomic analysis of exosomes isolated from PC cell lines and examined the usefulness of the marker in patients. METHODS: Exosomes isolated by differential centrifugation from the culture medium of androgen-dependent LNCaP prostate cancer cell line and its sublines of partially androgen-independent C4, androgen-independent C4-2 and bone metastatic C4-2B were subjected to iTRAQ-based proteomic analysis...
May 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28476044/clinical-and-biological-significance-of-circulating-tumor-cells-circulating-tumor-dna-and-exosomes-as-biomarkers-in-colorectal-cancer
#17
REVIEW
Shiyu Jia, Rui Zhang, Ziyang Li, Jinming Li
Colorectal cancer (CRC) has been the fourth leading cause of cancer-related mortality worldwide. Owing to clonal evolution and selection, CRC treatment needs multimodal therapeutic approaches and due monitoring of tumor progression and therapeutic efficacy. Liquid biopsy, involving the use of circulating tumor cells (CTCs), circulating tumor DNA (ctDNA), and exosomes, may offer a promising noninvasive alternative for diagnosis and for real-time monitoring of tumor evolution and therapeutic response compared to traditional tissue biopsy...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28468315/association-of-extracellular-membrane-vesicles-with-cutaneous-wound-healing
#18
REVIEW
Uyen Thi Trang Than, Dominic Guanzon, David Leavesley, Tony Parker
Extracellular vesicles (EVs) are membrane-enclosed vesicles that are released into the extracellular environment by various cell types, which can be classified as apoptotic bodies, microvesicles and exosomes. EVs have been shown to carry DNA, small RNAs, proteins and membrane lipids which are derived from the parental cells. Recently, several studies have demonstrated that EVs can regulate many biological processes, such as cancer progression, the immune response, cell proliferation, cell migration and blood vessel tube formation...
May 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28468249/unconventional-secretion-of-heat-shock-proteins-in-cancer
#19
REVIEW
Tiago Góss Santos, Vilma Regina Martins, Glaucia Noeli Maroso Hajj
Heat shock proteins (HSPs) are abundant cellular proteins involved with protein homeostasis. They have both constitutive and inducible isoforms, whose expression levels are further increased by stress conditions, such as temperature elevation, reduced oxygen levels, infection, inflammation and exposure to toxic substances. In these situations, HSPs exert a pivotal role in offering protection, preventing cell death and promoting cell recovery. Although the majority of HSPs functions are exerted in the cytoplasm and organelles, several lines of evidence reveal that HSPs are able to induce cell responses in the extracellular milieu...
April 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28465537/age-related-changes-in-plasma-extracellular-vesicle-characteristics-and-internalization-by-leukocytes
#20
Erez Eitan, Jamal Green, Monica Bodogai, Nicolle A Mode, Rikke Bæk, Malene M Jørgensen, David W Freeman, Kenneth W Witwer, Alan B Zonderman, Arya Biragyn, Mark P Mattson, Nicole Noren Hooten, Michele K Evans
Cells release lipid-bound extracellular vesicles (EVs; exosomes, microvesicles and apoptotic bodies) containing proteins, lipids and RNAs into the circulation. Vesicles mediate intercellular communication between both neighboring and distant cells. There is substantial interest in using EVs as biomarkers for age-related diseases including cancer, and neurodegenerative, metabolic and cardiovascular diseases. The majority of research focuses on identifying differences in EVs when comparing disease states and matched controls...
May 2, 2017: Scientific Reports
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