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exosome and angiogenesis

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https://www.readbyqxmd.com/read/28636406/protective-effect-of-intravitreal-administration-of-exosomes-derived-from-mesenchymal-stem-cells-on-retinal-ischemia
#1
Elad Moisseiev, Johnathon D Anderson, Sharon Oltjen, Mayank Goswami, Robert J Zawadzki, Jan A Nolta, Susanna S Park
PURPOSE: Exosomes derived from human mesenchymal stem cells (hMSCs) cultured under hypoxic conditions contain proteins and growth factors that promote angiogenesis. This study investigated the effect of intravitreal administration of these exosomes on retinal ischemia using a murine model. METHODS: Oxygen-induced retinopathy (OIR) was induced by exposing one-week-old male C57BL/6J mice to 5 days of 75% hyperoxic conditioning, and returning to room air. After hyperoxic conditioning, the right eye of each mouse was injected intravitreally with 1 µl saline or exosomes derived from hMSCs and compared to control mice of the same age raised in room air without OIR injected intravitreally with saline...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28627679/exosomes-new-players-in-cancer-review
#2
Wei Guo, Yibo Gao, Ning Li, Fei Shao, Chunni Wang, Pan Wang, Zhenlin Yang, Renda Li, Jie He
The past decade has witnessed an exponential increase in research on exosomes. For many years considered to be extracellular debris, exosomes are now considered important mediators in intercellular communication. The capability of exosomes to transfer proteins, DNA, mRNA, as well as non-coding RNAs has made them an attractive focus of research into the pathogenesis of different diseases, including cancer. Increasing evidence suggests that tumor cells release a large sum of exosomes, which may not only influence proximal tumor cells and stromal cells in local microenvironment, but also can exert systemic effects when participating in blood circulation...
June 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28620375/comparative-gene-expression-analysis-of-lymphocytes-treated-with-exosomes-derived-from-ovarian-cancer-and-ovarian-cysts
#3
Yujuan Li, Yang Yang, Aiwei Xiong, Xiaoqin Wu, Jingyan Xie, Suping Han, Shuli Zhao
Cancer cells employ many strategies to evade immune defense and to facilitate tumor growth and angiogenesis. As a novel mode of intercellular communication, cancer-derived exosomes contribute to the recruitment and mediation of lymphocytes within the tumor environment. However, the mechanisms and key molecules mediating the effect of exosomes on lymphocytes are unclear. We treated healthy peripheral blood lymphocytes with exosomes from ovarian cancer and ovarian cysts and screened for differentially expressed genes using the RT(2) Profiler Cancer Inflammation and Immunity Crosstalk PCR Array...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28587302/the-functions-of-microrna-200-family-in-ovarian-cancer-beyond-epithelial-mesenchymal-transition
#4
REVIEW
Pui-Wah Choi, Shu-Wing Ng
The majority of studies on microRNA-200 family members (miR-200s) in human cancers are based on the premise that miR-200s maintain epithelial cell integrity by suppressing epithelial-mesenchymal transition (EMT) through direct inhibition of mesenchymal transcription factors zinc finger E-box-binding homeobox 1/2 (ZEB1/ZEB2) and transforming growth factor-β (TGF-β), a potent inducer of EMT. Hence, downregulation of miR-200 in cancer cells promotes EMT and cancer metastasis. Yet, miR-200s are highly expressed in ovarian cancer, and ovarian cancer metastasizes primarily by dissemination within the pelvic cavity...
June 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28583178/therapeutic-angiogenesis-of-adipose-derived-stem-cells-for-ischemic-diseases
#5
REVIEW
Lina Zhao, Takerra Johnson, Dong Liu
Ischemic diseases, the leading cause of disability and death, are caused by the stenosis or obstruction of arterioles/capillaries that is not compensated for by vessel dilatation or collateral circulation. Angiogenesis is a complex process leading to new blood vessel formation and is triggered by ischemic conditions. Adequate angiogenesis, as a compensatory mechanism in response to ischemia, may increase oxygen and nutrient supplies to tissues and protect their function. Therapeutic angiogenesis has been the most promising therapy for treating ischemic diseases...
June 5, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28548369/invadosomes-are-coming-new-insights-into-function-and-disease-relevance
#6
REVIEW
Elyse K Paterson, Sara A Courtneidge
Invadopodia and podosomes are discrete, actin-based molecular protrusions that form in cancer cells and normal cells respectively in response to diverse signaling pathways and extracellular matrix cues. Although they participate in a host of different cellular processes, they share a common functional theme of controlling pericellular proteolytic activity, which sets them apart from other structures that function in migration and adhesion, including focal adhesions, lamellipodia, and filopodia. In this review, we highlight research that explores the function of these complex structures, including roles for podosomes in embryonic and postnatal development, in angiogenesis and remodeling of the vasculature, in maturation of the post-synaptic membrane, in antigen sampling and recognition, and in cell-cell fusion mechanisms, as well as the involvement of invadopodia at multiple steps of the metastatic cascade, and how all of this may apply in the treatment of human disease states...
May 26, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28527894/hfe-genotype-affects-exosome-phenotype-in-cancer
#7
Oliver D Mrowczynski, A B Madhankumar, Becky Slagle-Webb, Sang Y Lee, Brad E Zacharia, James R Connor
Neuroblastoma is the third most common childhood cancer, and timely diagnosis and sensitive therapeutic monitoring remain major challenges. Tumor progression and recurrence is common with little understanding of mechanisms. A major recent focus in cancer biology is the impact of exosomes on metastatic behavior and the tumor microenvironment. Exosomes have been demonstrated to contribute to the oncogenic effect on the surrounding tumor environment and also mediate resistance to therapy. The effect of genotype on exosomal phenotype has not yet been explored...
August 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28504721/tumour-exosomes-from-cells-harbouring-ptprz1-met-fusion-contribute-to-a-malignant-phenotype-and-temozolomide-chemoresistance-in-glioblastoma
#8
A-L Zeng, W Yan, Y-W Liu, Z Wang, Q Hu, E Nie, X Zhou, R Li, X-F Wang, T Jiang, Y-P You
Exosomes are carriers of pro-tumorigenic factors that participate in glioblastoma (GBM) progression, and many fusion genes are strong driver mutations in neoplasia and are involved in tumorigenesis. However, the ability of fusion genes to be transduced by exosomes is unknown. We characterized exosomes from GBM cells harbouring and not harbouring PTPRZ1-MET fusion (ZM fusion). We also determined the effect of the exosomes from ZM fusion cells (ZM exosomes) on pro-oncogenic secretions and showed that ZM exosomes are internalized by the recipient cells...
May 15, 2017: Oncogene
https://www.readbyqxmd.com/read/28495996/extracellular-vesicles-in-angiogenesis
#9
REVIEW
Dilyana Todorova, Stéphanie Simoncini, Romaric Lacroix, Florence Sabatier, Françoise Dignat-George
During the past decade, extracellular vesicles (EVs), which include apoptotic bodies, microvesicles, and exosomes, have emerged as important players in cell-to-cell communication in normal physiology and pathological conditions. EVs encapsulate and convey various bioactive molecules that are further transmitted to neighboring or more distant cells, where they induce various signaling cascades. The message delivered to the target cells is dependent on EV composition, which, in turn, is determined by the cell of origin and the surrounding microenvironment during EV biogenesis...
May 12, 2017: Circulation Research
https://www.readbyqxmd.com/read/28471299/interleukin-10-deficiency-impairs-reparative-properties-of-bone-marrow-derived-endothelial-progenitor-cell-exosomes
#10
Yujia Yue, Venkata Naga Srikanth Garikipati, Suresh Kumar Verma, David A Goukassian, Raj Kishore
Endothelial progenitor cell (EPC)-based therapy has immense potential to promote cardiac neovascularization and attenuate ischemic injury. Functional benefits of EPCs and other adult stem cell therapies largely involve paracrine mechanisms and exosomes secreted by stem cells are emerging as pivotal paracrine entity of stem/progenitor cells. However, modest outcomes after EPC-/stem cell-based clinical trials suggest that stem cell/exosome function might be modulated by stimuli they encounter in ischemic tissues, including systemic inflammation...
June 15, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28468315/association-of-extracellular-membrane-vesicles-with-cutaneous-wound-healing
#11
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/28436951/hypoxic-lung-cancer-secreted-exosomal-mir-23a-increased-angiogenesis-and-vascular-permeability-by-targeting-prolyl-hydroxylase-and-tight-junction-protein-zo-1
#12
Y-L Hsu, J-Y Hung, W-A Chang, Y-S Lin, Y-C Pan, P-H Tsai, C-Y Wu, P-L Kuo
Hypoxia plays a critical role during the evolution of malignant cells and tumour microenvironment (TME).Tumour-derived exosomes contain informative microRNAs involved in the interaction of cancer and stromal cells, thus contributing to tissue remodelling of tumour microenvironment. This study aims to clarify how hypoxia affects tumour angiogenesis through exosomes shed from lung cancer cells. Lung cancer cells produce more exosomes under hypoxic conditions than do parental cells under normoxic conditions. miR-23a was significantly upregulated in exosomes from lung cancer under hypoxic conditions...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28423355/mesenchymal-stem-cells-release-exosomes-that-transfer-mirnas-to-endothelial-cells-and-promote-angiogenesis
#13
Min Gong, Bin Yu, Jingcai Wang, Yigang Wang, Min Liu, Christian Paul, Ronald W Millard, De-Sheng Xiao, Muhammad Ashraf, Meifeng Xu
Mesenchymal stem cells (MSCs) have been found to benefit patients with a variety of ischemic diseases via promoting angiogenesis. It is also well established that exosomes secreted from MSCs deliver bioactive molecules, including microRNAs (miRs) to recipient cells. Therefore, we hypothesized that exosomes secreted from MSCs deliver miRs into endothelial cells and mediate angiogenesis. The pro-angiogenic stimulatory capacity of exosomes was investigated using tube-like structure formation and spheroid-based sprouting of human umbilical vein endothelial cells (HUVECs), and in vivo Matrigel plug assay...
April 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418925/syntenin-promotes-vegf-induced-vegfr2-endocytosis-and-angiogenesis-by-increasing-ephrin-b2-function-in-endothelial-cells
#14
Nara Tae, Suhyun Lee, Okwha Kim, Juhee Park, Sunghun Na, Jeong-Hyung Lee
Syntenin, a tandem PDZ-domain-containing scaffold protein, is involved in the regulation of diverse biological functions, including protein trafficking, exosome biogenesis, and cancer metastasis. Here, we present the first study to explore the significance of syntenin in endothelial cells. Syntenin knockdown in human umbilical vein endothelial cells (HUVECs) impaired vascular endothelial growth factor (VEGF)-mediated proliferation, migration, invasion, vascular permeability, and nitric oxide (NO) production...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402944/exosome-emerging-biomarker-in-breast-cancer
#15
REVIEW
Yunlu Jia, Yongxia Chen, Qinchuan Wang, Ushani Jayasinghe, Xiao Luo, Qun Wei, Ji Wang, Hanchu Xiong, Cong Chen, Bin Xu, Wenxian Hu, Linbo Wang, Wenhe Zhao, Jichun Zhou
Exosomes are nano-sized membrane vesicles released by a variety of cell types, and are thought to play important roles in intercellular communications. In breast cancer, through horizontal transfer of various bioactive molecules, such as proteins and mRNAs, exosomes are emerging as local and systemic cell-to-cell mediators of oncogenic information and play an important role on cancer progression. This review outlines the current knowledge and concepts concerning the exosomes involvement in breast cancer pathogenesis (including tumor initiation, invasion and metastasis, angiogenesis, immune system modulation and tumor microenvironment) and cancer therapy resistance...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28376567/hypoxia-inducible-factor-1%C3%AE-potentiates-jagged-1-mediated-angiogenesis-by-mesenchymal-stem-cell-derived-exosomes
#16
Hernán Gonzalez-King, Nahuel A García, Imelda Ontoria-Oviedo, María Ciria, José Anastasio Montero, Pilar Sepúlveda
Insufficient vessel growth associated with ischemia remains an unresolved issue in vascular medicine. Mesenchymal stem cells (MSCs) have been shown to promote angiogenesis via a mechanism that is potentiated by hypoxia. Overexpression of hypoxia inducible factor (HIF)-1α in MSCs improves their therapeutic potential by inducing angiogenesis in transplanted tissues. Here, we studied the contribution of exosomes released by HIF-1α-overexpressing donor MSCs (HIF-MSC) to angiogenesis by endothelial cells. Exosome secretion was enhanced in HIF-MSC...
April 4, 2017: Stem Cells
https://www.readbyqxmd.com/read/28338200/glioma-cells-promote-angiogenesis-through-the-release-of-exosomes-containing-long-non-coding-rna-pou3f3
#17
H-L Lang, G-W Hu, Y Chen, Y Liu, W Tu, Y-M Lu, L Wu, G-H Xu
OBJECTIVE: Angiogenesis is a key event in the progression of gliomas, and emerging evidence suggests that exosomes are signaling extracellular organelles that modulate the tumor microenvironment and promote angiogenesis and tumor progression. This study aimed to explore the mechanism by which glioma-derived exosomes affect angiogenesis. MATERIALS AND METHODS: qRT-PCR was used to determine the expression level of linc-POU3F3 in glioma tissue as well as glioma cell lines...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28298297/angiogenic-mechanisms-of-human-cd34-stem-cell-exosomes-in-the-repair-of-ischemic-hindlimb
#18
Prabhu Mathiyalagan, Yaxuan Liang, David Kim, Sol Misener, Tina Thorne, Christine E Kamide, Ekaterina Klyachko, Douglas W Losordo, Roger J Hajjar, Susmita Sahoo
RATIONALE: Paracrine secretions seem to mediate therapeutic effects of human CD34(+) stem cells locally transplanted in patients with myocardial and critical limb ischemia and in animal models. Earlier, we had discovered that paracrine secretion from human CD34(+) cells contains proangiogenic, membrane-bound nanovesicles called exosomes (CD34Exo). OBJECTIVE: Here, we investigated the mechanisms of CD34Exo-mediated ischemic tissue repair and therapeutic angiogenesis by studying their miRNA content and uptake...
April 28, 2017: Circulation Research
https://www.readbyqxmd.com/read/28297576/chitosan-wound-dressings-incorporating-exosomes-derived-from-microrna-126-overexpressing-synovium-mesenchymal-stem-cells-provide-sustained-release-of-exosomes-and-heal-full-thickness-skin-defects-in-a-diabetic-rat-model
#19
Shi-Cong Tao, Shang-Chun Guo, Min Li, Qin-Fei Ke, Ya-Ping Guo, Chang-Qing Zhang
There is a need to find better strategies to promote wound healing, especially of chronic wounds, which remain a challenge. We found that synovium mesenchymal stem cells (SMSCs) have the ability to strongly promote cell proliferation of fibroblasts; however, they are ineffective at promoting angiogenesis. Using gene overexpression technology, we overexpressed microRNA-126-3p (miR-126-3p) and transferred the angiogenic ability of endothelial progenitor cells to SMSCs, promoting angiogenesis. We tested a therapeutic strategy involving controlled-release exosomes derived from miR-126-3p-overexpressing SMSCs combined with chitosan...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28286751/new-delivery-systems-of-stem-cells-for-vascular-regeneration-in-ischemia
#20
REVIEW
Adegbenro Omotuyi John Fakoya
The finances of patients and countries are increasingly overwhelmed with the plague of cardiovascular diseases as a result of having to chronically manage the associated complications of ischemia such as heart failures, neurological deficits, chronic limb ulcers, gangrenes, and amputations. Hence, scientific research has sought for alternate therapies since pharmacological and surgical treatments have fallen below expectations in providing the desired quality of life. The advent of stem cells research has raised expectations with respect to vascular regeneration and tissue remodeling, hence assuring the patients of the possibility of an improved quality of life...
2017: Frontiers in Cardiovascular Medicine
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