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https://www.readbyqxmd.com/read/29143183/micrornas-important-regulators-of-induced-pluripotent-stem-cell-generation-and-differentiation
#1
REVIEW
Zhao-Lin Zeng, Xiao-Long Lin, Li-Lan Tan, Ya-Mi Liu, Kai Qu, Zuo Wang
Induced pluripotent stem (iPS) cells can differentiate into nearly all types of cells. In contrast to embryonic stem cells, iPS cells are not subject to immune rejection because they are derived from a patient's own cells without ethical concerns. These cells can be used in regenerative medical techniques, stem cell therapy, disease modelling and drug discovery investigations. However, this application faces many challenges, such as low efficiency, slow generation time, partially reprogrammed colonies and tumourigenicity...
November 15, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/29109529/glomerulocapillary-mirna-response-to-hla-class-i-antibody-in-vitro-and-in-vivo
#2
Falko M Heinemann, Peter T Jindra, Clemens L Bockmeyer, Philip Zeuschner, Juliane Wittig, Heike Höflich, Marc Eßer, Mahmoud Abbas, Georg Dieplinger, Katharina Stolle, Udo Vester, Peter F Hoyer, Stephan Immenschuh, Andreas Heinold, Peter A Horn, Wentian Li, Ute Eisenberger, Jan U Becker
Changes in miRNA expression glomerular of capillaries during antibody-mediated rejection (ABMR) are poorly understood and could contribute to the deleterious inflammation and fibrosis of ABMR via suppression of target genes. A better understanding could lead to novel diagnostic tools and reveal novel therapeutic targets. We explored deregulated miRNAs in an glomeruloendothelial in vitro model of ABMR due to class I human leukocyte antigen (HLA) with and without complement activation. We studied a set of 16 promising candidate miRNAs in microdissected glomeruli a confirmation set of 20 human transplant biopsies (DSA+) compared to 10 matched controls without evidence for ABMR...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29099728/heart-xenotransplantation
#3
Joshua L Chan, Muhammad M Mohiuddin
PURPOSE OF REVIEW: Cardiac xenotransplantation has entered an exciting era, marked by numerous considerable advances in the field, and continues to be of great interest because of its potential ability in ameliorating the current constraints of limited allograft availability. This review aims to examine recent progress in this rapidly changing discipline. RECENT FINDINGS: Although several hurdles remain, the use of rapidly evolving transgenic technology, in combination with novel immunosuppression regimens, has the potential to address current allogenic donor pool constraints and mechanical circulatory system device limitations...
December 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28977879/specific-microrna-library-of-ifn-%C3%AF-on-bovine-endometrial-epithelial-cells
#4
Haichong Wu, Tao Zhang, Xiaofei Ma, Kangfeng Jiang, Gan Zhao, Changwei Qiu, Ganzhen Deng
IFN-τ is specifically secreted by the conceptus in ruminants during early pregnancy, and it plays a vital role in the immunological function of pregnancy. However, its mechanism involving microRNA (miRNA) is still not well understood. Deep sequencing was used to explore the specific miRNA library of IFN-τ on bovine endometrial epithelial cells (bEECs). The results showed that 574 known bovine miRNAs and 109 novel miRNAs were identified. We found 74 differentially expressed miRNAs, including 30 commonly expressed miRNAs in the experiment...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28904014/redundant-and-incoherent-regulations-of-multiple-phenotypes-suggest-micrornas-role-in-stability-control
#5
Zhongqi Liufu, Yixin Zhao, Li Guo, Guangxia Miao, Juan Xiao, Yang Lyu, Yuxin Chen, Suhua Shi, Tian Tang, Chung-I Wu
Each microRNA (miRNA) represses a web of target genes and, through them, controls multiple phenotypes. The difficulties inherent in such controls cast doubt on how effective miRNAs are in driving phenotypic changes. A "simple regulation" model posits "one target-one phenotype" control under which most targeting is nonfunctional. In an alternative "coordinate regulation" model, multiple targets are assumed to control the same phenotypes coherently, and most targeting is functional. Both models have some empirical support but pose different conceptual challenges...
October 2017: Genome Research
https://www.readbyqxmd.com/read/28885716/micrornas-are-potential-objective-and-early-biomarkers-for-acute-rejection-of-transplanted-limbs-in-a-rat-model
#6
Hiroki Oda, Ryosuke Ikeguchi, Tomoki Aoyama, Souichi Ohta, Takashi Noguchi, Yukitoshi Kaizawa, Hirofumi Yurie, Hisataka Takeuchi, Koji Yamamoto, Shuichi Matsuda
BACKGROUND: Limb transplantation is considered to be a treatment option for amputees. Visual skin inspection and histological assessment are used to assess rejection, but these techniques are largely subjective. Using a rat model, we examined the potential of several microRNAs (miRNAs) to be used as objective and minimally invasive biomarkers of acute rejection of transplanted limbs. METHODS: Three Brown Norway rats and 15 Lewis rats were assigned to 2 groups. In the allograft group, 3 Brown Norway rats were used as the donors and 6 Lewis rats as the recipients...
September 8, 2017: Microsurgery
https://www.readbyqxmd.com/read/28882368/the-epigenetic-promise-to-improve-prognosis-of-heart-failure-and-heart-transplantation
#7
REVIEW
Chiara Sabia, Antonietta Picascia, Vincenzo Grimaldi, Cristiano Amarelli, Ciro Maiello, Claudio Napoli
Heart transplantation is still the only possible life-saving treatment for end-stage heart failure, the critical epilogue of several cardiac diseases. Epigenetic mechanisms are being intensively investigated because they could contribute to establishing innovative diagnostic and predictive biomarkers, as well as ground-breaking therapies both for heart failure and heart transplantation rejection. DNA methylation and histone modifications can modulate the innate and adaptive immune response by acting on the expression of immune-related genes that, in turn, are crucial determinants of transplantation outcome...
August 15, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28880456/urinary-mir-155-5p-and-cxcl10-as-prognostic-and-predictive-biomarkers-of-rejection-graft-outcome-and-treatment-response-in-kidney-transplantation
#8
Olga Millán, Klemens Budde, Claudia Sommerer, Irene Aliart, Olesja Rissling, Beatriz Bardaji, Maaren Matz, Martin Zeier, Irene Silva, Lluis Guirado, Mercè Brunet
AIMS: MicroRNAs (miRNAs) may be useful biomarkers of rejection and allograft outcome in kidney transplantation. Elevated urinary CXCL10 levels have been associated with acute rejection (AR) and may predict allograft failure. We examined the correlation of miRNA, CXCL10 levels and immunosuppressive drug exposure with AR and graft function in kidney transplant recipients. METHODS: Eighty de novo kidney transplant recipients were recruited from four European centres...
September 7, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28745139/role-of-mir-29-as-marker-of-risk-of-acute-rejection-after-heart-transplant
#9
S Guo, X Guo, S Wang, Q Nie, G Ni, C Wang
BACKGROUND: Circulating miRNAs are potential biomarkers of the pathogenesis of certain diseases and in monitoring therapeutic responses. We hypothesized that serum miR-29 can determine risk of acute cardiac allograft rejection. METHODS: Peripheral vein blood was collected from 50 healthy volunteers and 506 patients during post-transplant surveillance. Serum cardiac troponin I (cTnI) and miR-29 was detected by ELISA and qRT-PCR assay respectively. Rejection risk was defined as International Society of Heart and Lung Transplant score from leukocyte infiltration of an endomyocardial biopsy...
October 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28730445/polycationic-probe-guided-nanopore-single-molecule-counter-for-selective-mirna-detection
#10
Kai Tian, Ruicheng Shi, Amy Gu, Michael Pennella, Li-Qun Gu
MicroRNAs (miRNAs) are a class of noncoding RNAs that are being explored as a new type of disease biomarkers. The nanopore single-molecule sensor offers a potential noninvasive tool to detect miRNAs for diagnostics and prognosis applications. However, one of the challenges that limits its clinical applications is the presence of a large variety of nontarget nucleic acids in the biofluid extracts. Upon interacting with the nanopore, nontarget nucleic acids produce "contaminative" nanopore signals that interfere with target miRNA discrimination, thus severely lowering the accuracy in target miRNA detection...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28706977/acute-rejection-after-kidney-transplantation-associates-with-circulating-micrornas-and-vascular-injury
#11
Roel Bijkerk, Barend W Florijn, Meriem Khairoun, Jacques M G J Duijs, Gurbey Ocak, Aiko P J de Vries, Alexander F Schaapherder, Marko J K Mallat, Johan W de Fijter, Ton J Rabelink, Anton Jan van Zonneveld, Marlies E J Reinders
BACKGROUND: Acute rejection (AR) of kidney transplants is associated with the loss of endothelial integrity, microvascular rarefaction and, ultimately, graft dysfunction. Circulating angiogenic microRNAs (miRNAs) may serve as markers for microvascular injury. Here, we investigated the short- and long-term effects of AR after kidney transplantation on systemic vascular injury and the associated circulating miRNA profile. METHODS: Systemic vascular injury was determined by measuring capillary tortuosity and density within the oral mucosa as well as by assessing circulating levels of angiopoietin-2/angiopoietin-1 ratio, vascular endothelial growth factor and soluble thrombomodulin...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28654900/specific-microrna-library-of-ifn-%C3%AF-on-bovine-endometrial-epithelial-cells
#12
Haichong Wu, Tao Zhang, Xiaofei Ma, Kangfeng Jiang, Gan Zhao, Changwei Qiu, Ganzhen Deng
IFN-τ is specifically secreted by the conceptus in ruminants during early pregnancy, and it plays a vital role in the immunological function of pregnancy. However, its mechanism involving microRNA (miRNA) is still not well understood. Deep sequencing was used to explore the specific miRNA library of IFN-τ on bovine endometrial epithelial cells (bEECs). The results showed that 574 known bovine miRNAs and 109 novel miRNAs were identified. We found 74 differentially expressed miRNAs, including 30 commonly expressed miRNAs in the experiment...
June 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28571481/blood-biomarkers-of-kidney-transplant-rejection-an-endless-search
#13
Lola Jacquemont, Jean-Paul Soulillou, Nicolas Degauque
The tailoring of immunosuppressive treatment is recognized as a promising strategy to improve long-term kidney graft outcome. To guide the standard care of transplant recipients, physicians need objective biomarkers that can identify an ongoing pathology with the graft or low intensity signals that will be later evolved to accelerated transplant rejection. The early identification of 'high-risk /low-risk' patients enables the adjustment of standard of caring, including managing the frequency of clinical visits and the immunosuppression dosing...
July 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28560399/microrna-expression-analysis-during-fk506-induced-osteogenic-differentiation-in-rat-bone-marrow-stromal-cells
#14
Jing Zhang, Xiaoping Yu, Youcheng Yu, Yiming Gong
FK506 (also known as tacrolimus) is a potent immunosuppressive agent that is widely used in the treatment of graft-rejection and autoimmune diseases. FK506 has attracted additional attention owing to its potential role in osteogenic differentiation and bone formation. MicroRNAs (miRNAs) have been demonstrated to serve important roles in the regulation of osteogenic differentiation; however, identification of specific miRNAs and their roles in regulating FK506‑induced osteogenic differentiation have been poorly examined...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28540063/microrna-122-ameliorates-corneal-allograft-rejection-through-the-downregulation-of-its-target-cpeb1
#15
Ting Wang, Fengjie Li, Wenwen Geng, Qingguo Ruan, Weiyun Shi
Transplant rejection is a major cause of corneal transplantation failure. MicroRNAs (miRNAs) are a family of small RNAs that regulates gene expression in a sequence-specific manner. miRNAs have recently been shown to have important roles in human organ transplantation, but reports of miRNAs directly associated with corneal transplantation rejection remain limited. To investigate the role of miRNAs during corneal allograft rejection, we established a mouse penetrating keratoplasty model and used microarrays to screen for differentially expressed miRNAs...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28507795/digital-analysis-and-epigenetic-regulation-of-the-signature-of-rejection-in-colorectal-cancer
#16
Viktor H Koelzer, Lena Sokol, Stefan Zahnd, Lucine Christe, Heather Dawson, Martin D Berger, Daniel Inderbitzin, Inti Zlobec, Alessandro Lugli
The immune system plays a pivotal role in the development and progression of colorectal cancer (CRC). Tumor immune rejection has been previously linked to the activation of the interferon-stimulated genes (ISG) STAT1, IRF-5 and IRF-1. Specific immunoregulatory microRNAs (miRNAs) may impact the expression of these ISG in the tumor microenvironment. In this translational study, we develop a digital image analysis protocol to identify the ISG-gene expression signature and investigate miRNA expression in the immediate environment of invading cancer cells...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28485720/herpesvirus-micrornas-for-use-in-gene-therapy-immune-evasion-strategies
#17
REVIEW
S T F Bots, R C Hoeben
Transplantation of allogeneic cells as well as of genetically corrected autologous cells are potent approaches to restore cellular functions in patients suffering from genetic diseases. The recipient's immune responses against non-self-antigens may compromise the survival of the grafted cells. Recipients of the graft may therefore require lifelong treatment with immunosuppressive drugs. An alternative approach to reduce graft rejection could involve the use of immune-evasion molecules. Expression of such molecules in cells of the graft may subvert recognition by the host's immune system...
July 2017: Gene Therapy
https://www.readbyqxmd.com/read/28362846/literature-based-condition-specific-mirna-mrna-target-prediction
#18
Minsik Oh, Sungmin Rhee, Ji Hwan Moon, Heejoon Chae, Sunwon Lee, Jaewoo Kang, Sun Kim
miRNAs are small non-coding RNAs that regulate gene expression by binding to the 3'-UTR of genes. Many recent studies have reported that miRNAs play important biological roles by regulating specific mRNAs or genes. Many sequence-based target prediction algorithms have been developed to predict miRNA targets. However, these methods are not designed for condition-specific target predictions and produce many false positives; thus, expression-based target prediction algorithms have been developed for condition-specific target predictions...
2017: PloS One
https://www.readbyqxmd.com/read/28360912/exosomes-isolated-from-ascites-of-t-cell-lymphoma-bearing-mice-expressing-surface-cd24-and-hsp-90-induce-a-tumor-specific-immune-response
#19
Florencia Menay, Leticia Herschlik, Julieta De Toro, Federico Cocozza, Rodrigo Tsacalian, María José Gravisaco, María Paula Di Sciullo, Alejandrina Vendrell, Claudia I Waldner, Claudia Mongini
Extracellular vesicles (EVs), including endosome-derived nanovesicles (exosomes), are involved in cell-cell communication. Through transfer of their molecular contents, extracellular nanovesicles can alter the function of recipient cells. Due to these characteristics, EVs have shown potential as a new alternative for cancer immunotherapy. Tumor exosomes isolated from malignant ascites can activate dendritic cells, thereby priming the immune system to recognize and kill cancer cells. However, a suppressive role on tumor immune response has also been reported, suggesting that the neoplastic stage of carcinogenesis and the microenvironment where tumor cells grow may influence the amount of EVs released by the cell...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28340815/expression-profile-of-microrna-biogenesis-components-in-renal-transplant-patients
#20
E Celen, M G Ertosun, H Kocak, A Dinckan, B Yoldas
BACKGROUND: MicroRNAs (miRNAs) and the miRNA biogenesis components are potential biomarkers of some prevalent diseases, such as cancer and diabetes. In light of this information, we aimed to investigate the expression profiles of miRNA biogenesis components in renal transplant patients before and after transplantation and how these profiles are related to immunosuppressive treatment and clinical outcomes of these patients. METHODS: In this study, gene and protein expression profiles of Dicer, Drosha, Pasha (DGCR8), Exportin5 (XPO5), and Argonaute2 (AGO2) in peripheral blood mononuclear cells (PBMCs) of renal transplant patients were evaluated by means of real-time quantitative polymerase chain reaction and Western blot methods before and 3 months after transplantation...
April 2017: Transplantation Proceedings
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