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CD63 exosome

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https://www.readbyqxmd.com/read/29786755/cardiac-progenitor-cell%C3%A2-derived-exosomes-promote-h9c2-cell-growth-via-akt-mtor-activation
#1
Shentang Li, Jie Jiang, Zuocheng Yang, Zhuoying Li, Xing Ma, Xin Li
Exosomes are cell‑derived vesicles released from a variety of mammalian cells that are involved in cell‑to‑cell signalling. It has been reported that cardiac progenitor cells (CPCs) derived from an adult heart are one of the most promising stem cell types for cardioprotection and repair. The mammalian target of rapamycin (mTOR) signalling pathway is a pivotal regulator in CPCs, therefore, CPC‑derived exosomes were used in the present study to investigate whether it can promote H9C2 cell growth through the protein kinase B (PKB, or Akt)/mTOR signalling pathway...
May 21, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29740437/targeting-and-therapy-of-glioblastoma-in-a-mouse-model-using-exosomes-derived-from-natural-killer-cells
#2
Liya Zhu, Ji Min Oh, Prakash Gangadaran, Senthilkumar Kalimuthu, Se Hwan Baek, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Objective: Glioblastoma is a highly aggressive primary brain tumor that is resistant to radiotherapy and chemotherapy. Natural killer (NK) cells have been used to treat incurable cancers. Recent studies have investigated the effectiveness of NK-cell-derived exosomes (NK-Exo) for treating incurable cancers such as melanoma, leukemia, and neuroblastoma; however, NK-Exo have not been used to treat glioblastoma. In the present study, we investigated the antitumor effects of NK-Exo against aggressive glioblastoma both in vitro and in vivo and determined the tumor-targeting ability of NK-Exo by performing fluorescence imaging...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29740045/exosome-markers-associated-with-immune-activation-and-oxidative-stress-in-hiv-patients-on-antiretroviral-therapy
#3
Sukrutha Chettimada, David R Lorenz, Vikas Misra, Simon T Dillon, R Keith Reeves, Cordelia Manickam, Susan Morgello, Gregory D Kirk, Shruti H Mehta, Dana Gabuzda
Exosomes are nanovesicles released from most cell types including immune cells. Prior studies suggest exosomes play a role in HIV pathogenesis, but little is known about exosome cargo in relation to immune responses and oxidative stress. Here, we characterize plasma exosomes in HIV patients and their relationship to immunological and oxidative stress markers. Plasma exosome fractions were isolated from HIV-positive subjects on ART with suppressed viral load and HIV-negative controls. Exosomes were characterized by electron microscopy, nanoparticle tracking, immunoblotting, and LC-MS/MS proteomics...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29723143/-the-role-of-exosomal-tetraspanins-and-proteases-in-tumor-progression
#4
REVIEW
N V Yunusova, E A Tugutova, S N Tamkovich, I V Kondakova
Major (CD9, CD63, CD81) and others (CD82, CD151, Tspan8) tetraspanins are widely represented in exosomes, where they interact with various proteins and form functional tetraspanin complexes. Tetraspanin complexes include proteases. Tetraspanin-associated exosomal proteases (ADAM proteases, MMPs, EMMPRIN) play an important role in the processes of cell motility, migration, invasion and formation of metastases. Also, a significant contribution to tumor progression is made by proteases that are not associated with tetraspanins...
March 2018: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/29720199/immunoassays-for-scarce-tumour-antigens-in-exosomes-detection-of-the-human-nkg2d-ligand-mica-in-tetraspanin-containing-nanovesicles-from-melanoma
#5
Sheila López-Cobo, Carmen Campos-Silva, Amanda Moyano, Myriam Oliveira-Rodríguez, Annette Paschen, María Yáñez-Mó, María Carmen Blanco-López, Mar Valés-Gómez
BACKGROUND: Tumour-derived exosomes can be released to serum and provide information on the features of the malignancy, however, in order to perform systematic studies in biological samples, faster diagnostic techniques are needed, especially for detection of low abundance proteins. Most human cancer cells are positive for at least one ligand for the activating immune receptor NKG2D and the presence in plasma of NKG2D-ligands can be associated with prognosis. METHODS: Using MICA as example of a tumour-derived antigen, endogenously expressed in metastatic melanoma and recruited to exosomes, we have developed two immunocapture-based assays for detection of different epitopes in nanovesicles...
May 2, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29719295/serum-exosomal-mir-92b-5p-as-a-potential-biomarker-for-acute-heart-failure-caused-by-dilated-cardiomyopathy
#6
Tao Wu, Yichen Chen, Yantao Du, Jin Tao, Zhong Zhou, Zhuo Yang
BACKGROUND/AIMS: MicroRNAs (miRNAs) can be used as biomarkers for cardiovascular diseases, especially for heart failure. However, there are few reports on serum exosomal miRNA biomarkers in patients with acute heart failure (AHF) due to Dilated cardiomyopathy (DCM). METHODS: We analyzed 3 different serum exosomal miRNAs (exo-miR-92b-5p, exo-miR-192-5p, and exo-miR-320a) in 43 patients with DCM-AHF and 34 healthy volunteers as a control group (CG) by using exosome separation followed by a quantitative reverse-transcript PCR assay...
April 26, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29718044/screening-and-multiple-detection-of-cancer-exosomes-using-an-sers-based-method
#7
Zhile Wang, Shenfei Zong, Yujie Wang, Na Li, Lang Li, Ju Lu, Zhuyuan Wang, Baoan Chen, Yiping Cui
As a kind of most important cancer biomarker, exosomes are getting more frequently investigated in cancer diagnosis. In this study, we proposed an SERS-based method for the screening and simultaneous multiple detection of exosomes using magnetic substrates and SERS probes. Specifically, the capturing substrates are achieved using gold shell magnetic nanobeads modified by aptamers, which can capture most kinds of exosomes by recognizing the generic surface protein CD63. Moreover, the SERS probes are made of gold nanoparticles decorated with a Raman reporter and a specific aptamer for targeting exosomes...
May 2, 2018: Nanoscale
https://www.readbyqxmd.com/read/29675371/mesenchymal-stem-cells-derived-exosomes-ameliorate-blue-light-stimulation-in-retinal-pigment-epithelium-cells-and-retinal-laser-injury-by-vegf-dependent-mechanism
#8
Guang-Hui He, Wei Zhang, Ying-Xue Ma, Jing Yang, Li Chen, Jian Song, Song Chen
AIM: To observe the effect of exosomes derived from human umbilical cord blood mesenchymal stem cells (hUCMSCs) on the expression of vascular endothelial growth factor-A (VEGF-A) in blue light injured human retinal pigment epithelial (RPE) cells and laser-induced choroidal neovascularization (CNV) in rats. METHODS: Exosomes were isolated from hUCMSCs and characterized by transmission electron microscope and Western blot. MSCs-derived exosomes were cultured with RPE cells exposed to blue light...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29674035/dnase-i-enzyme-aided-fluorescence-signal-amplification-based-on-graphene-oxide-dna-aptamer-interactions-for-colorectal-cancer-exosome-detection
#9
Hui Wang, Hui Chen, Zhipeng Huang, Tengda Li, Anmei Deng, Jilie Kong
Exosomes have proved to be an effective cancer biomarker with significant potential, and several cell-specific molecules have been found in colorectal cancer (CRC) exosomes. Nevertheless, it is challenging to use exosomes in clinical lab diagnostics due to their nanoscale and the lack of a convenient and effective detection platform. Here, we developed a DNase I enzyme-aided fluorescence amplification method for CRC exosome detection, based on graphene oxide (GO)-DNA aptamer (CD63 and EpCAM aptamers) interactions...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29626979/placental-exosomes-profile-in-maternal-and-fetal-circulation-in-intrauterine-growth-restriction-liquid-biopsies-to-monitoring-fetal-growth
#10
Jezid Miranda, Cristina Paules, Soumyalekshmi Nair, Andrew Lai, Carlos Palma, Katherin Scholz-Romero, Gregory E Rice, Eduard Gratacos, Fatima Crispi, Carlos Salomon
INTRODUCTION: Placenta-derived exosomes may represent an additional pathway by which the placenta communicates with the maternal system to induce maternal vascular adaptations to pregnancy and it may be affected during Fetal growth restriction (FGR). The objective of this study was to quantify the concentration of total and placenta-derived exosomes in maternal and fetal circulation in small fetuses classified as FGR or small for gestational age (SGA). METHODS: Prospective cohort study in singleton term gestations including 10 normally grown fetuses and 20 small fetuses, sub-classified into SGA and FGR accordingly to birth weight (BW) percentile and fetoplacental Doppler...
April 2018: Placenta
https://www.readbyqxmd.com/read/29616126/dendritic-cells-loaded-with-hela-derived-exosomes-simulate-an-antitumor-immune-response
#11
Guoping Ren, Yanhong Wang, Shexia Yuan, Baolian Wang
The aim of the present study was to investigate the effect of loading dendritic cells (DCs) with HeLa-derived exosomes on cytotoxic T-lymphocyte (CTL) responses, and the cytotoxic effects of CTL responses on the HeLa cell line. Ultrafiltration centrifugation combined with sucrose density gradient ultracentrifugation was applied to isolate exosomes (HeLa-exo) from the supernatant of HeLa cells. Morphological features of HeLa-exo were identified by transmission electron microscopy (TEM), and the expression of cluster of differentiation (CD)63 was detected by western blotting...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29603107/low-level-laser-irradiation-at-a-high-power-intensity-increased-human-endothelial-cell-exosome-secretion-via-wnt-signaling
#12
Hesam Saghaei Bagheri, Monireh Mousavi, Aysa Rezabakhsh, Jafar Rezaie, Seyed Hossein Rasta, Alireza Nourazarian, Çigir Biray Avci, Habib Tajalli, Mehdi Talebi, Ahmad Oryan, Majid Khaksar, Masoumeh Kazemi, Seyed Mahdi Nassiri, Shahrooz Ghaderi, Bakiye Goker Bagca, Reza Rahbarghazi, Emel Sokullu
The distinct role of low-level laser irradiation (LLLI) on endothelial exosome biogenesis remains unclear. We hypothesize that laser irradiation of high dose in human endothelial cells (ECs) contributes to the modulation of exosome biogenesis via Wnt signaling pathway. When human ECs were treated with LLLI at a power density of 80 J/cm2 , the survival rate reduced. The potential of irradiated cells to release exosomes was increased significantly by expressing genes CD63, Alix, Rab27a, and b. This occurrence coincided with an enhanced acetylcholine esterase activity, pseudopodia formation, and reduced zeta potential value 24 h post-irradiation...
March 30, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29592957/intra-cardiac-release-of-extracellular-vesicles-shapes-inflammation-following-myocardial-infarction
#13
Xavier Loyer, Ivana Zlatanova, Cécile Devue, Min Yin, Kiave-Yune Howangyin, Phatchanat Klaihmon, Coralie L Guerin, Marouane Kheloufi, José Vilar, Konstantinos Zannis, Bernd K Fleischmann, Do Won Hwang, Jongmin Park, Hakho Lee, Philippe Menasche, Jean-Sébastien Silvestre, Chantal M Boulanger
<u>Rationale:</u> A rapid and massive influx of inflammatory cells occurs into ischemic area following myocardial infarction, resulting in local release of cytokines and growth factors. Yet, the mechanisms regulating their production are not fully explored. The release of extracellular vesicles (EV) in the interstitial space curbs important biological functions, including inflammation, and influences the development of cardiovascular diseases. So far, there is no evidence for in situ release of cardiac EVs following myocardial infarction...
March 28, 2018: Circulation Research
https://www.readbyqxmd.com/read/29575602/exosomal-tetraspanins-as-regulators-of-cancer-progression-and-metastasis-and-novel-diagnostic-markers
#14
REVIEW
Rama Rao Malla, Santhi Pandrangi, Seema Kumari, Murali Mohan Gavara, Anil Kumar Badana
Exosomes are cell-cell communicators emerging as a new paradigm for noninvasive diagnosis and prognosis of treatment response. Exosomal tetraspanin proteins like CD63, CD9 and CD81 play a critical role in sorting, selective recruitment of biomolecules, target selection, cell-specific entry, capturing, angiogenesis and vasculogenesis. These tetraspanins are being used as markers for oral, colorectal and colon cancers and glioblastoma. However, exosomal markers with robust specificity for early detection of carcinomas are the furthest along...
March 25, 2018: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29570265/integrated-analysis-of-exosomal-protein-biomarkers-on-alternating-current-electrokinetic-chips-enables-rapid-detection-of-pancreatic-cancer-in-patient-blood
#15
Jean M Lewis, Ankit D Vyas, Yuqi Qiu, Karen S Messer, Rebekah White, Michael J Heller
Pancreatic ductal adenocarcinoma (PDAC) typically has non-specific symptoms, and is often found too late to treat. Because diagnosis of PDAC involves complex, invasive, and expensive procedures, screening populations at increased risk will depend on developing rapid, sensitive, specific, and cost-effective tests. Exosomes, which are nanoscale vesicles shed into blood from tumors, have come into focus as valuable entities for non-invasive liquid biopsy diagnostics. However, rapid capture and analysis of exosomes with their protein and other biomarkers have proven difficult...
March 23, 2018: ACS Nano
https://www.readbyqxmd.com/read/29556344/exosomal-dmbt1-from-human-urine-derived-stem-cells-facilitates-diabetic-wound-repair-by-promoting-angiogenesis
#16
Chun-Yuan Chen, Shan-Shan Rao, Lu Ren, Xiong-Ke Hu, Yi-Juan Tan, Yin Hu, Juan Luo, Yi-Wei Liu, Hao Yin, Jie Huang, Jia Cao, Zhen-Xing Wang, Zheng-Zhao Liu, Hao-Ming Liu, Si-Yuan Tang, Ran Xu, Hui Xie
Chronic non-healing wounds represent one of the most common complications of diabetes and need advanced treatment strategies. Exosomes are key mediators of cell paracrine action and can be directly utilized as therapeutic agents for tissue repair and regeneration. Here, we explored the effects of exosomes from human urine-derived stem cells (USC-Exos) on diabetic wound healing and the underlying mechanism. Methods: USCs were characterized by flow cytometry and multipotent differentiation potential analyses...
2018: Theranostics
https://www.readbyqxmd.com/read/29539618/non-proximal-renal-tubule-derived-urinary-exosomal-mir-200b-as-a-biomarker-of-renal-fibrosis
#17
Yanting Yu, Feng Bai, Nan Qin, Wenjin Liu, Qi Sun, Yang Zhou, Junwei Yang
BACKGROUND: Renal fibrosis is a common outcome of nearly all kinds of chronic kidney disease (CKD) and eventually progresses to end-stage renal disease. The identification of an optimal biomarker of renal fibrosis to replace the invasive renal biopsy will have important clinical implications. METHODS: We isolated urinary exosomes from 50 participants and examined the exosomal protein content and particle number in 38 CKD patients with different degrees of renal fibrosis and in 12 normal individuals...
March 14, 2018: Nephron
https://www.readbyqxmd.com/read/29518183/cardioprotection-by-cardiac-progenitor-cell-secreted-exosomes-role-of-pregnancy-associated-plasma-protein-a
#18
Lucio Barile, Elisabetta Cervio, Vincenzo Lionetti, Giuseppina Milano, Alessandra Ciullo, Vanessa Biemmi, Sara Bolis, Claudia Altomare, Marco Matteucci, Dario Disilvestre, Tudor Emanuel Fertig, Tiziano Torre, Stefanos Demertzis, Pierluigi Mauri, Tiziano Moccetti, Giuseppe Vassalli
Aims: Cell therapy trials using cardiac-resident progenitor cells (CPCs) and bone marrow-derived mesenchymal stem/progenitor cells (BMCs) in patients after myocardial infarction have provided encouraging results. Exosomes, nanosized extracellular vesicles of endosomal origin, figure prominently in the bioactivities of these cells. However, a head-to-head comparison of exosomes from the two cell types has not been performed yet. Methods and Results: CPCs and BMCs were derived from cardiac atrial appendage specimens and sternal bone marrow, respectively, from patients (n=20; age, 69...
March 5, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29497081/hypoxia-induced-exosome-secretion-promotes-survival-of-african-american-and-caucasian-prostate-cancer-cells
#19
Gati K Panigrahi, Prakash P Praharaj, Taylor C Peak, Jessica Long, Ravi Singh, Johng S Rhim, Zakaria Y Abd Elmageed, Gagan Deep
African American men in the United States have higher mortality due to prostate cancer (PCa) compared to other races. One reason for this disparity is the lack of in-depth understanding of the PCa biology in African Americans. For example, hypoxia in prostate tumor microenvironment is associated with adverse prognosis; still, no hypoxia-related studies have been reported in African Americans. Here, we compared African-American and Caucasian PCa cells for exosome secretion under normoxic (21% O2 ) and hypoxic (1% O2 ) conditions...
March 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29484119/breast-cancer-cell-derived-exosomes-and-macrophage-polarization-are-associated-with-lymph-node-metastasis
#20
Yin Ji Piao, Hoe Suk Kim, Eun Hye Hwang, Jisu Woo, Meihua Zhang, Woo Kyung Moon
Crosstalk between breast cancer and macrophages has potential implications for tumor metastasis. This study investigates macrophage polarization induced by triple-negative breast cancer (TNBC) cell-derived exosomes that promote lymph node (LN) metastasis in orthotopic TNBC models. The MDA-MB-231 cancer cell line expressing the exosomal CD63-red fluorescence (RFP) fusion protein was generated to noninvasively visualize exosome transfer into cancer cells and macrophages. Administration of RFP-tagged exosomes enhanced migration of macrophages and induced macrophage polarization in vitro ...
January 26, 2018: Oncotarget
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