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Exosome AND cancer

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https://www.readbyqxmd.com/read/28718351/exosomal-hsp60-a-potentially-useful-biomarker-for-diagnosis-assessing-prognosis-and-monitoring-response-to-treatment
#1
Caruso Bavisotto, F Cappello, Ajl Macario, E Conway de Macario, M Logozzi, S Fais, C Campanella
Cell-to-cell communication is imperative for life and it is mediated by sending and receiving information via the secretion and subsequent receptor-mediated detection of biological molecules. Exosomes (EXs) secreted from cells to the extracellular environment play an important role in intercellular communication in normal and pathological conditions. Areas covered: New evidence indicates that tumor cells-derived EXs contribute to cancer progression through the modulation of tumor microenvironment. The exosomal heat shock protein 60 (HSP60) is very likely a key player in intercellular cross-talk, particularly during the progress of diseases, such as cancer...
July 18, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28712929/exosomes-from-osteosarcoma-and-normal-osteoblast-differ-in-proteomic-cargo-and-immunomodulatory-effects-on-t-cells
#2
Ryan M Troyer, Carl E Ruby, Cheri P Goodall, Liping Yang, Claudia S Maier, Hassan A Albarqi, Jacqueline V Brady, Kallan Bathke, Oleh Taratula, Dan Mourich, Shay Bracha
BACKGROUND: Canine osteosarcoma (OSA) is the most common cancer of the appendicular skeleton and is associated with high metastatic rate to the lungs and poor prognosis. Recent studies have shown the impact of malignant-derived exosomes on immune cells and the facilitation of immune evasion. In the current study, we have characterized the proteomic profile of exosomes derived from healthy osteoblasts and osteosarcoma cell lines. We investigated the direct impact of these exosomes on healthy T cells...
July 13, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28711943/pancreatic-cancer-derived-exosomes-promote-tumor-metastasis-and-liver-pre-metastatic-niche-formation
#3
Zeqian Yu, Susu Zhao, Long Ren, Lishan Wang, Zhangjun Chen, Robert M Hoffman, Jiahua Zhou
Exosomes play important roles in cell-cell communication, and are likely mediators of the metastatic cascade in cancer. This study examined the role of exosomes in pancreatic cancer cell adhesion, migration, and invasion. We isolated and purified exosomes from two isogenic pancreatic cancer cell lines with different metastatic potentials. Uptake of exosomes from highly metastatic Panc02-H7 cells decreased adhesion and increased migration and invasion capacity in weakly metastatic Panc02 cells in vitro. Exosomes from highly metastatic pancreatic cancer cells induced liver pre-metastatic niche formation in naïve mice and promoted primary tumor growth and liver metastasis in vivo...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28710412/exosomes-derived-from-pancreatic-cancer-cells-induce-insulin-resistance-in-c2c12-myotube-cells-through-the-pi3k-akt-foxo1-pathway
#4
Lantian Wang, Bo Zhang, Wen Zheng, Muxing Kang, Qing Chen, Wenjie Qin, Chao Li, Yuefeng Zhang, Yingkuan Shao, Yulian Wu
Prospective epidemiological studies have consistently suggested that pancreatic cancer-associated new-onset diabetes mellitus (PC-DM) represents a potential platform for early diagnose of pancreatic cancer (PC). Despite the studies performed, the mechanism behind this phenomenon remains ambiguous. In this study, we explored the effects of two types of exosomes released by murine pancreatic cancer and ductal epithelial cells on murine skeletal muscle cells. The results show that PC-derived exosomes can readily enter C2C12 myotubes, triggering lipidosis and glucose intake inhibition...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28710381/evaluation-and-diagnostic-potential-of-circulating-extracellular-vesicle-associated-micrornas-in-adrenocortical-tumors
#5
Pál Perge, Henriett Butz, Raffaele Pezzani, Irina Bancos, Zoltán Nagy, Krisztina Pálóczi, Gábor Nyírő, Ábel Decmann, Erna Pap, Michaela Luconi, Massimo Mannelli, Edit I Buzás, Miklós Tóth, Marco Boscaro, Attila Patócs, Peter Igaz
There is no available blood marker for the preoperative diagnosis of adrenocortical malignancy. The objective of this study was to investigate the expression of extracellular vesicle-associated microRNAs and their diagnostic potential in plasma samples of patients suffering from adrenocortical tumors. Extracellular vesicles were isolated either by using Total Exosome Isolation Kit or by differential centrifugation/ultracentrifugation. Preoperative plasma extracellular vesicle samples of 6 adrenocortical adenomas (ACA) and 6 histologically verified adrenocortical cancer (ACC) were first screened by Taqman Human Microarray A-cards...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28709644/horizontal-transfer-of-mir-106a-b-from-cisplatin-resistant-hepatocarcinoma-cells-can-alter-the-sensitivity-of-cervical-cancer-cells-to-cisplatin
#6
Grace R Raji, T V Sruthi, Lincy Edatt, K Haritha, S Sharath Shankar, V B Sameer Kumar
Recent studies indicate that horizontal transfer of genetic material can act as a communication tool between heterogenous populations of tumour cells, thus altering the chemosensitivity of tumour cells. The present study was designed to check whether the horizontal transfer of miRNAs released by cisplatin resistant (Cp-r) Hepatocarcinoma cells can alter the sensitivity of cervical cancer cells. For this exosomes secreted by cisplatin resistant and cisplatin sensitive HepG2 cells (EXres and EXsen) were isolated and characterised...
July 11, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28709002/exosome-rna-unshielding-couples-stromal-activation-to-pattern-recognition-receptor-signaling-in-cancer
#7
Barzin Y Nabet, Yu Qiu, Jacob E Shabason, Tony J Wu, Taewon Yoon, Brian C Kim, Joseph L Benci, Angela M DeMichele, Julia Tchou, Joseph Marcotrigiano, Andy J Minn
Interactions between stromal fibroblasts and cancer cells generate signals for cancer progression, therapy resistance, and inflammatory responses. Although endogenous RNAs acting as damage-associated molecular patterns (DAMPs) for pattern recognition receptors (PRRs) may represent one such signal, these RNAs must remain unrecognized under non-pathological conditions. We show that triggering of stromal NOTCH-MYC by breast cancer cells results in a POL3-driven increase in RN7SL1, an endogenous RNA normally shielded by RNA binding proteins SRP9/14...
July 13, 2017: Cell
https://www.readbyqxmd.com/read/28708994/unshielding-exosomal-rna-unleashes-tumor-growth-and-metastasis
#8
Irina Matei, Han Sang Kim, David Lyden
Reciprocal interactions between tumor cells and their microenvironment drive cancer progression and therapy resistance. In this issue, Nabet et al. demonstrate that dynamic feedback between tumor and stroma subverts normal inflammatory responses by triggering the release of exosomes containing unshielded RNAs that activate pattern recognition receptors, thereby promoting tumor growth and metastasis.
July 13, 2017: Cell
https://www.readbyqxmd.com/read/28708430/natural-extracellular-nanovesicles-and-photodynamic-molecules-is-there-a-future-for-drug-delivery
#9
Katsuyuki Kusuzaki, Takao Matsubara, Hiroaki Murata, Mariantonia Logozzi, Elisabetta Iessi, Rossella Di Raimo, Fabrizio Carta, Claudiu T Supuran, Stefano Fais
Photodynamic molecules represent an alternative approach for cancer therapy for their property (i) to be photo-reactive; (ii) to be not-toxic for target cells in absence of light; (iii) to accumulate specifically into tumour tissues; (iv) to be activable by a light beam only at the tumour site and (v) to exert cytotoxic activity against tumour cells. However, to date their clinical use is limited by the side effects elicited by systemic administration. Extracellular vesicles are endogenous nanosized-carriers that have been recently introduced as a natural delivery system for therapeutic molecules...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28707321/expansion-of-bcr-abl1-cells-requires-pak2-but-not-pak1
#10
Leo Edlinger, Angelika Berger-Becvar, Ingeborg Menzl, Gregor Hoermann, Georg Greiner, Eva Grundschober, Zsuzsanna Bago-Horvath, Wael Al-Zoughbi, Gerald Hoefler, Christine Brostjan, Lars Gille, Richard Moriggl, Andreas Spittler, Veronika Sexl, Andrea Hoelbl-Kovacic
The p21-activated kinases (PAKs) are key nodes in oncogenic signalling pathways controlling growth, survival, and motility of cancer cells. Their activity is increased in many human cancers and is associated with poor prognosis. To date, PAK deregulation has mainly been studied in solid tumours, where PAK1 and PAK4 are the main isoforms deregulated. We show that PAK1 and PAK2 are the critical isoforms in a BCR/ABL1(+) haematopoietic malignancy. In suspension, leukaemic cells deficient for PAK1 and PAK2 undergo apoptosis, while the loss of either protein is well tolerated...
July 14, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28706483/phytoagent-deoxyelephantopin-and-its-derivative-inhibit-triple-negative-breast-cancer-cell-activity-through-ros-mediated-exosomal-activity-and-protein-functions
#11
Jeng-Yuan Shiau, Yong-Qun Chang, Kyoko Nakagawa-Goto, Kuo-Hsiung Lee, Lie-Fen Shyur
A novel plant sesquiterpene lactone derivative, DET derivative (DETD)-35, originating from parental deoxyelephantopin (DET) was previously observed to effectively suppress human triple negative breast cancer (TNBC) MDA-MB-231 cell activity and tumor growth in mice. In this study, the mechanisms underlying the activity of DETD-35 were elucidated. DET and DETD-35 induced reactive oxygen species (ROS) which caused structural damage and dysfunction of mitochondria and increased cytosolic calcium level, subsequently evoking exosome release from the cancer cells...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28706161/the-molecular-mechanisms-of-chemoresistance-in-cancers
#12
REVIEW
Hua-Chuan Zheng
Overcoming intrinsic and acquired drug resistance is a major challenge in treating cancer patients because chemoresistance causes recurrence, cancer dissemination and death. This review summarizes numerous molecular aspects of multi-resistance, including transporter pumps, oncogenes (EGFR, PI3K/Akt, Erk and NF-κB), tumor suppressor gene (p53), mitochondrial alteration, DNA repair, autophagy, epithelial-mesenchymal transition (EMT), cancer stemness, and exosome. The chemoresistance-related proteins are localized to extracellular ligand, membrane receptor, cytosolic signal messenger, and nuclear transcription factors for various events, including proliferation, apoptosis, EMT, autophagy and exosome...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28703811/cytoplasmic-fragment-of-cd147-generated-by-regulated-intramembrane-proteolysis-contributes-to-hcc-by-promoting-autophagy
#13
Bo Wu, Jian Cui, Xiang-Min Yang, Zhen-Yu Liu, Fei Song, Ling Li, Jian-Li Jiang, Zhi-Nan Chen
Hepatocellular carcinoma (HCC) is one of the most lethal and prevalent cancers worldwide. CD147 (EMMPRIN or basigin) is a leading gene relating to hepatocarcinogenesis and metastasis, and is detected in transmembrane, exosome or circulating forms in HCC patients. The endosome recycling of CD147 further enhances the function of this oncoprotein from a dynamic perspective. However, previous studies about CD147 mainly focused on one separate form, and little attention has been paid to how the different forms of tumor-derived CD147 changes...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28703313/mesenchymal-stem-cells-a-new-platform-for-targeting-suicide-genes-in-cancer
#14
REVIEW
Rana Moradian Tehrani, Javad Verdi, Mahdi Noureddini, Rasoul Salehi, Reza Salarinia, Meysam Mosalaei, Miganosh Simonian, Behrang Alani, Moosa Rahimi Ghiasi, Mahmoud Reza Jaafari, Hamid Reza Mirzaei, Hamed Mirzaie
One of the important strategies for the treatment of cancer is gene therapy which has the potential to exclusively eradicate malignant cells, without any damage to the normal tissues. Gene-directed enzyme prodrug therapy (GDEPT) is a two-step gene therapy approach, where a suicide gene is directed to tumor cells. The gene encodes an enzyme that expressed intracellularly where it is able to convert a prodrug into cytotoxic metabolites. Various delivery systems have been developed to achieve the appropriate levels of tumor restricted expression of chemotherapeutic drugs...
July 13, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28695799/effect-of-human-hepatocellular-carcinoma-hepg2-cell-derived-exosome-on-the-differentiation-of-mesenchymal-stem-cells-and-their-interaction
#15
Fei Luo, Zhao Sun, Qin Han, Chunling Xue, Chunmei Bai
Objective To investigate the effect of human hepatocellular carcinoma HepG2 cell-derived Exosome on the differentiation of mesenchymal stem cells(MSC)into cancer-associated myofibroblasts(CAF)and the impacts of CAF on liver cancer cell proliferation,migration,and invasion. Methods The protein expression of HepG2 cell-derived Exosome was detected by Western blotting. MSCs were separated from human adipose tissue and cultured with HepG2 cell-derived Exosome(100 ng/nl)to initiate differentiation. The expressions of mesenchymal markers and several interleukins were also detected by Western blotting...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28694142/increased-psa-expression-on-prostate-cancer-exosomes-in-in%C3%A2-vitro-condition-and-in-cancer-patients
#16
Mariantonia Logozzi, Daniela F Angelini, Elisabetta Iessi, Davide Mizzoni, Rossella Di Raimo, Cristina Federici, Luana Lugini, Giovanna Borsellino, Alessandro Gentilucci, Federico Pierella, Vittorio Marzio, Alessandro Sciarra, Luca Battistini, Stefano Fais
Prostate specific antigen (PSA) test is the most common, clinically validated test for the diagnosis of prostate cancer (PCa). While neoplastic lesions of the prostate may cause aberrant levels of PSA in the blood, the quantitation of free or complexed PSA poorly discriminates cancer patients from those developing benign lesions, often leading to invasive and unnecessary surgical procedures. Microenvironmental acidity increases exosome release by cancer cells. In this study we evaluated whether acidity, a critical phenotype of malignancy, could influence exosome release and increase the PSA expression in nanovesicles released by PCa cells...
July 8, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28694015/predicting-treatment-resistance-and-relapse-through-circulating-dna
#17
Emma Beddowes, Stephen J Sammut, Meiling Gao, Carlos Caldas
The use of circulating DNA(ctDNA) to provide a non-invasive, personalised genomic snapshot of a patients' tumour has huge potential. Over the past five years this area of research has gained huge momentum. A number of studies in metastatic breast cancer have shown the potential of ctDNA to predict prognosis and treatment response using ctDNA. Further developments have included deeper sequencing using whole exome and shallow whole genome approaches which has the potential to identify new mutations and chromosomal copy number changes which appear upon resistance to treatment...
July 7, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28692055/cellular-prion-protein-prp-c-in-the-development-of-merlin-deficient-tumours
#18
L Provenzano, Y Ryan, D A Hilton, J Lyons-Rimmer, F Dave, E A Maze, C L Adams, R Rigby-Jones, S Ammoun, C O Hanemann
Loss of function mutations in the neurofibromatosis Type 2 (NF2) gene, coding for a tumour suppressor, Merlin, cause multiple tumours of the nervous system such as schwannomas, meningiomas and ependymomas. These tumours may occur sporadically or as part of the hereditary condition neurofibromatosis Type 2 (NF2). Current treatment is confined to (radio) surgery and no targeted drug therapies exist. NF2 mutations and/or Merlin inactivation are also seen in other cancers including some mesothelioma, breast cancer, colorectal carcinoma, melanoma and glioblastoma...
July 10, 2017: Oncogene
https://www.readbyqxmd.com/read/28689377/-exosomal-micrornas-as-a-part-of-the-cell-cell-communication-in-cancer
#19
Agnieszka Wesołowska, Katarzyna Piwocka
Exosomes are small membrane vesicles released by several types of cells into the extracellular matrix. They contain both, proteins and nucleic acids, including DNA fragments, mRNAs, microRNAs, and other non-coding RNAs, that can be transported to the recipient cells. They are one of the key elements of intercellular communication that occurs in the tumor microenvironment. Recently studies have shown that exosomal microRNAs are involved in the regulation of cell migration and invasiveness, angiogenesis, metastasis, and the modulation of immune response against cancer...
2017: Postepy Biochemii
https://www.readbyqxmd.com/read/28688231/exosomes-of-invasive-urothelial-carcinoma-cells-are-characterized-by-a-specific-mirna-expression-signature
#20
Sophie Baumgart, Sebastian Hölters, Carsten-Henning Ohlmann, Rainer Bohle, Michael Stöckle, Marie Stampe Ostenfeld, Lars Dyrskjøt, Kerstin Junker, Joana Heinzelmann
Muscle-invasive bladder cancer (MIBC) represents a highly aggressive tumor type compared to non-muscle-invasive tumors. MIBC is characterized by specific molecular alterations, which may also modulate extracellular tumorigenic effects. Tumor-associated exosomes, especially exosomal miRNAs, are important regulators in the interaction between tumor cells and tumor microenvironment by affecting tumor-promoting processes in target cells. It is important to analyze whether their exosomal patterns also reflect the specific molecular characteristics of MIBC...
May 4, 2017: Oncotarget
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