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MicroRNA transplantation

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https://www.readbyqxmd.com/read/28102444/patients-with-bicuspid-and-tricuspid-aortic-valve-exhibit-distinct-regional-microrna-signatures-in-mildly-dilated-ascending-aorta
#1
Sebastian Albinsson, Alessandro Della Corte, Azra Alajbegovic, Katarzyna K Krawczyk, Ciro Bancone, Umberto Galderisi, Marilena Cipollaro, Marisa De Feo, Amalia Forte
MicroRNAs are able to modulate gene expression in a range of diseases. We focused on microRNAs as potential contributors to the pathogenesis of ascending aorta (AA) dilatation in patients with stenotic tricuspid (TAV) or bicuspid aortic valve (BAV). Aortic specimens were collected from the 'concavity' and the 'convexity' of mildly dilated AAs and of normal AAs from heart transplant donors. Aortic RNA was analyzed through PCR arrays, profiling the expression of 84 microRNAs involved in cardiovascular disease...
January 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28073833/exosomal-mir-142-3p-is-increased-during-cardiac-allograft-rejection-and-augments-vascular-permeability-through-down-regulation-of-endothelial-rab11fip2-expression
#2
Ihdina Sukma Dewi, Selvi Celik, Anna Karlsson, Zsuzsanna Hollander, Karen Lam, Janet-Wilson McManus, Scott Tebbutt, Raymond Ng, Paul Keown, Robert McMaster, Bruce McManus, Jenny Öhman, Olof Gidlöf
AIMS: Exosome-mediated microRNA transfer is a recently discovered mode of cell-to-cell communication, in which microRNAs act as paracrine molecules, exerting their regulatory effects in recipient cells. T cells and endothelial cells are two main players in the mechanism of acute cellular cardiac rejection. The aim of this study was to investigate the role of exosomal microRNAs in the crosstalk between T cells and endothelial cells and its implications for the molecular mechanisms that drive acute cellular rejection in heart transplantation...
January 10, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28064305/upregulation-of-pim2-by-underexpression-of-microrna-135-5p-improves-survival-rates-of-skin-allografts-by-suppressing-apoptosis-of-fibroblast-cells
#3
Hongtu Zhang
BACKGROUND It has been reported that miR-135-5p is involved with many diseases. In this study, we aimed at define the relationship between miR-135-5p level and burn patient survival after skin transplantation. MATERIAL AND METHODS Expression of miR-135-5p and PIM2 was measured using real-time PCR and Western blot analysis in the skin samples collected from burn patients who received skin graft or in the fibroblast cells transfected with miR-135-5p mimics or inhibitors. The regulatory association between miR-135-5p and PIM2 was verified using bioinformatics analysis and luciferase assay...
January 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28006867/differential-profile-of-activated-regulatory-t-cell-subsets-and-micrornas-in-tolerant-liver-transplant-recipients
#4
B Revilla-Nuin, A de Bejar, L Martínez-Alarcón, J I Herrero, C M Martínez-Cáceres, P Ramírez, A Baroja-Mazo, J A Pons
: Regulatory T cells (Tregs) play a potential role in operational tolerance in liver transplant patients, and microRNAs (miRNAs) are known to be involved in immunological responses and tolerance. Thus, we analyzed the implication of different peripheral blood Treg subsets and miRNAs on liver transplantation tolerance in 24 tolerant (Tol) and 23 non-tolerant (non-Tol) liver transplant recipients by cellular, genetic and epigenetic approximation. Non-Tol patients had a lower demethylation rate of the FOXP3 Treg-specific demethylated region (TSDR) than Tol patients that correlated with the frequency of circulating Tregs...
December 22, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/28003808/microbiome-selection-could-spur-next-generation-plant-breeding-strategies
#5
Murali Gopal, Alka Gupta
"No plant is an island too…" Plants, though sessile, have developed a unique strategy to counter biotic and abiotic stresses by symbiotically co-evolving with microorganisms and tapping into their genome for this purpose. Soil is the bank of microbial diversity from which a plant selectively sources its microbiome to suit its needs. Besides soil, seeds, which carry the genetic blueprint of plants during trans-generational propagation, are home to diverse microbiota that acts as the principal source of microbial inoculum in crop cultivation...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28003351/human-microrna-responses-predict-cytomegalovirus-replication-following-solid-organ-transplantation
#6
Sang Hoon Han, D Kumar, V H Ferreira, A Egli, H H Hirsch, M Weisser, C Garzoni, C van Delden, P Y Bochud, O Manuel, P Meylan, K Boggian, S Husain, N J Mueller, A Humar
BACKGROUND: Homo sapiens mature microRNA-200b-3p and -200c-3p are predicted to bind to 3' UTR of mRNA encoding human cytomegalovirus (HCMV) immediate early protein 2 (IE2). We hypothesized that expression of these microRNAs pre-transplant could predict HCMV replication after solid organ transplantation (SOT). METHODS: 272 SOT recipients were HCMV-seropositive pre-transplant and were managed using pre-emptive therapy. Pre-transplant PBMCs were stimulated with HCMV followed by collection of RNA one day post-stimulation...
December 21, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27995756/identification-of-mir-31-5p-mir-141-3p-mir-200c-3p-and-glt1-as-human-liver-aging-markers-sensitive-to-donor-recipient-age-mismatch-in-transplants
#7
Miriam Capri, Fabiola Olivieri, Catia Lanzarini, Daniel Remondini, Vincenzo Borelli, Raffaella Lazzarini, Laura Graciotti, Maria Cristina Albertini, Elena Bellavista, Aurelia Santoro, Fiammetta Biondi, Enrico Tagliafico, Elena Tenedini, Cristina Morsiani, Grazia Pizza, Francesco Vasuri, Antonietta D'Errico, Alessandro Dazzi, Sara Pellegrini, Alessandra Magenta, Marco D'Agostino, Maurizio C Capogrossi, Matteo Cescon, Maria Rita Rippo, Antonio Domenico Procopio, Claudio Franceschi, Gian Luca Grazi
To understand why livers from aged donors are successfully used for transplants, we looked for markers of liver aging in 71 biopsies from donors aged 12-92 years before transplants and in 11 biopsies after transplants with high donor-recipient age-mismatch. We also assessed liver function in 36 age-mismatched recipients. The major findings were the following: (i) miR-31-5p, miR-141-3p, and miR-200c-3p increased with age, as assessed by microRNAs (miRs) and mRNA transcript profiling in 12 biopsies and results were validated by RT-qPCR in a total of 58 biopsies; (ii) telomere length measured by qPCR in 45 samples showed a significant age-dependent shortage; (iii) a bioinformatic approach combining transcriptome and miRs data identified putative miRs targets, the most informative being GLT1, a glutamate transporter expressed in hepatocytes...
December 20, 2016: Aging Cell
https://www.readbyqxmd.com/read/27992519/site-dependent-differences-in-dna-methylation-and-their-impact-on-plant-establishment-and-phosphorus-nutrition-in-populus-trichocarpa
#8
Brigitte Schönberger, Xiaochao Chen, Svenja Mager, Uwe Ludewig
The propagation via clonal stem cuttings is a frequent practice in tree plantations. Despite their clonal origin, the trees establish differently according to weather, temperature and nutrient availability, as well as the presence of various stresses. Here, clonal Populus trichocarpa (cv. Muhle Larson) cuttings from different sites were transferred into a common, fully nutrient supplied environment. Despite identical underlying genetics, stem cuttings derived from sites with lower phosphorus availability established worse, independent of phosphorus (P) level after transplantation...
2016: PloS One
https://www.readbyqxmd.com/read/27989131/integrative-omics-analysis-in-primary-human-hepatocytes-unravels-persistent-mechanisms-of-cyclosporine-a-induced-cholestasis
#9
Jarno E J Wolters, Marcel H M van Herwijnen, Daniel H J Theunissen, Danyel G J Jennen, Wim F P M Van den Hof, Theo M C M de Kok, Frank G Schaap, Simone G J van Breda, Jos C S Kleinjans
Cyclosporine A (CsA) is an undecapeptide with strong immunosuppressant activities and is used a lot after organ transplantation. Furthermore, it may induce cholestasis in the liver. In general, the drug-induced cholestasis (DIC) pathway includes genes involved in the uptake, synthesis, conjugation, and secretion of bile acids. However, whether CsA-induced changes in the cholestasis pathway in vitro are persistent for repeated dose toxicity has not yet been investigated. To explore this, primary human hepatocytes (PHH) were exposed to a subcytotoxic dose of 30 μM CsA daily for 3 and 5 days...
December 19, 2016: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/27983913/precise-regulation-of-mir-210-is-critical-for-the-cellular-homeostasis-maintenance-and-transplantation-efficacy-enhancement-of-mesenchymal-stem-cell-in-acute-liver-failure-therapy
#10
Yingxia Liu, Yongjia Xiong, Feiyue Xing, Hao Gao, Xiaogang Wang, Liumin He, Chaoran Ren, Lei Liu, Kwok-Fai So, Jia Xiao
Stem cell transplantation is a promising clinical strategy to cure acute liver failure. However, low cell survival ratio after transplantation significantly impaired its therapeutic efficacy. This is partly due to insufficient resistance of transplanted stem cells to severe oxidative and inflammatory stress at the injury sites. In the current study, we demonstrated that a small molecule zeaxanthin dipalmitate (ZD) could enhance the defensive abilities against adverse stresses of human adipose-derived mesenchymal stem cells (hADMSCs) in vitro and increase their therapeutic outcomes of acute liver failure after transplantation in vivo...
13, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27981544/human-umbilical-cord-mesenchymal-stem-cells-ameliorate-experimental-cirrhosis-through-activation-of-keratinocyte-growth-factor-by-suppressing-microrna-199
#11
Z-M Bi, Q-F Zhou, Y Geng, H-M Zhang
OBJECTIVE: Keratinocyte growth factor (KGF) has a demonstrated role in the prevention of cirrhosis during liver regeneration. Previous studies have shown that transplantation of human umbilical cord mesenchymal stem cells (HUCMSCs) reduces the development of cirrhosis after liver injury. However, whether KGF may be involved in the underlying molecular mechanisms remains unknown. Here we addressed this question. MATERIALS AND METHODS: We did HUCMSC transplantation in mice that had developed cirrhosis by carbon tetrachloride (CCl4)...
December 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27974246/micrornas-106b-and-222-improve-hyperglycemia-in-a-mouse-model-of-insulin-deficient-diabetes-via-pancreatic-%C3%AE-cell-proliferation
#12
Sohei Tsukita, Tetsuya Yamada, Kei Takahashi, Yuichiro Munakata, Shinichiro Hosaka, Hironobu Takahashi, Junhong Gao, Yuta Shirai, Shinjiro Kodama, Yoichiro Asai, Takashi Sugisawa, Yumiko Chiba, Keizo Kaneko, Kenji Uno, Shojiro Sawada, Junta Imai, Hideki Katagiri
Major symptoms of diabetes mellitus manifest, once pancreatic β-cell numbers have become inadequate. Although natural regeneration of β-cells after injury is very limited, bone marrow (BM) transplantation (BMT) promotes their regeneration through undetermined mechanism(s) involving inter-cellular (BM cell-to-β-cell) crosstalk. We found that two microRNAs (miRNAs) contribute to BMT-induced β-cell regeneration. Screening murine miRNAs in serum exosomes after BMT revealed 42 miRNAs to be increased. Two of these miRNAs (miR-106b-5p and miR-222-3p) were shown to be secreted by BM cells and increased in pancreatic islet cells after BMT...
February 2017: EBioMedicine
https://www.readbyqxmd.com/read/27951581/micrornas-are-associated-with-uremic-toxicity-cardiovascular-calcification-and-disease
#13
Ziad A Massy, Valérie Metzinger-Le Meuth, Laurent Metzinger
BACKGROUND: Vascular calcification has been recognized to be a major risk factor in chronic kidney disease (CKD) and downstream cardiovascular complications. Micro-RNAs (miRNAs) are small noncoding RNAs comprising 20-25 nucleotides that regulate gene expression by inhibiting or degrading the target mRNA, and constitute potential new biomarkers and future therapeutic strategies. SUMMARY: We tested the relevance of several cardiovascular-specific miRNAs as new biomarkers for CKD, cardiovascular disease, and cardiovascular complications...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27942594/mir-323a-3p-regulates-lung-fibrosis-by-targeting-multiple-profibrotic-pathways
#14
Lingyin Ge, David M Habiel, Phil M Hansbro, Richard Y Kim, Sina A Gharib, Jeffery D Edelman, Melanie Königshoff, Tanyalak Parimon, Rena Brauer, Ying Huang, Jenieke Allen, Dianhua Jiang, Adrianne A Kurkciyan, Takako Mizuno, Barry R Stripp, Paul W Noble, Cory M Hogaboam, Peter Chen
Maladaptive epithelial repair from chronic injury is a common feature in fibrotic diseases, which in turn activates a pathogenic fibroblast response that produces excessive matrix deposition. Dysregulated microRNAs (miRs) can regulate expression of multiple genes and fundamentally alter cellular phenotypes during fibrosis. Although several miRs have been shown to be associated with lung fibrosis, the mechanisms by which miRs modulate epithelial behavior in lung fibrosis are lacking. Here, we identified miR-323a-3p to be downregulated in the epithelium of lungs with bronchiolitis obliterans syndrome (BOS) after lung transplantation, idiopathic pulmonary fibrosis (IPF), and murine bleomycin-induced fibrosis...
December 8, 2016: JCI Insight
https://www.readbyqxmd.com/read/27941431/role-of-circulating-micrornas-in-the-immunopathogenesis-of-rejection-following-pediatric-lung-transplantation
#15
Zhongping Xu, Wei Yang, Nancy Steward, Stuart C Sweet, Lara Danziger-Isakov, Peter S Heeger, T Mohanakumar
BACKGROUND: Acute rejection (AR) and development of chronic rejection, bronchiolitis obliterans syndrome (BOS), remain major limiting factors for lung transplantation (LTx). This retrospective study is to identify differentially expressed circulating microRNAs (miRNAs) that associate with development of AR and BOS in pediatric lung transplant recipients (LTxR). METHODS: We determined the circulating levels of 7 selected candidate miRNAs in 14 LTxR with AR, 7 with BOS, and compared them against 13 stable pediatric LTxR at 1, 6, and 12 months following LTx...
December 8, 2016: Transplantation
https://www.readbyqxmd.com/read/27936486/microrna-4656-is-a-prognostic-factor-and-tumor-suppressor-in-human-pancreatic-through-downstream-tareget-of-trka
#16
Xianglong Tan, Jinyong Lv, Guodong Zhao, Zhiming Zhao, Chenggang Li, Yong Xu, Minggen Hu
BACKGROUND: In this study, we investigated the expression profile and functional mechanism of microRNA-4656 in human pancreatic cancer (PC). METHODS: MiR-4656 expression in PC tumors was examined by qRT-PCR in 134 patients. Associations between tumorous miR-4656 expression and patient's clinicopathological parameters and overall survival were analyzed. MiR-4656 expression was also examined in PC in vitro cell lines. In Capan-1 and AsPC-1 PC cells, lentivirus-induced miR-4656 overexpression or downregulation was applied to investigate its functional regulations on PC in vitro proliferation and invasion, and in vivo transplant growth...
December 9, 2016: Journal of Gene Medicine
https://www.readbyqxmd.com/read/27924730/congenital-malformations-attributed-to-prenatal-exposure-to-cyclophosphamide
#17
Padmanabhan Rengasamy
Cyclophosphamide (CPA) remains one of the most widely prescribed anticancer drugs. It is also used in the treatment of rheumatoid arthritis, childhood nephrotic syndrome and systemic lupus erythematosus. It is a potent immunosuppressive agent. It is commonly used in blood and bone marrow transplantation. With the growing trend among women postponing childbearing, the number of women who are diagnosed with breast cancer is also increasing thus escalating the chances of exposure of the unborn child to antineoplastic drugs...
December 6, 2016: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27917123/mir-150-suppresses-the-proliferation-and-tumorigenicity-of-leukemia-stem-cells-by-targeting-the-nanog-signaling-pathway
#18
Dan-Dan Xu, Peng-Jun Zhou, Ying Wang, Yi Zhang, Rong Zhang, Li Zhang, Su-Hong Chen, Wu-Yu Fu, Bi-Bo Ruan, Hai-Peng Xu, Chao-Zhi Hu, Lu Tian, Jin-Hong Qin, Sheng Wang, Xiao Wang, Qiu-Ying Liu, Zhe Ren, Xue-Kui Gu, Yao-He Li, Zhong Liu, Yi-Fei Wang
Proliferation, a key feature of cancer cells, accounts for the majority of cancer-related diseases resulting in mortality. MicroRNAs (miRNAs) plays important post-transcriptional modulation roles by acting on multiple signaling pathways, but the underlying mechanism in proliferation and tumorigenicity is unclear. Here, we identified the role of miR-150 in proliferation and tumorigenicity in leukemia stem cells (LSCs; CD34+CD38- cells). miR-150 expression was significantly down-regulated in LSCs from leukemia cell lines and clinical samples...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27913008/microrna-98-plays-a-critical-role-in-experimental-myocarditis
#19
Xiao Chen, Shuo Dong, Ningning Zhang, Liang Chen, Mao-Gang Li, Ping-Chang Yang, Jiangping Song
BACKGROUND AND AIMS: Myocarditis is inflammation in the heart; its pathogenesis is to be further investigated. Activities of micro RNAs (miR) are associated with immune inflammation. This study tests a hypothesis that miR-98 is involved in the development of myocarditis. METHODS: BALB/c mice were immunized with cardiac α-myosin heavy chain peptides (MyHC-α) to induce myocarditis. The effects of miR-98 on regulation of interleukin (IL)-10 were assessed by real time RT-PCR...
November 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27893611/absence-of-mir-182-augments-cardiac-allograft-survival
#20
Liang Wei, Vandana Kaul, Xiumei Qu, Xiaoxing Xiong, Audrey H Lau, Naoharu Iwai, Olivia M Martinez, Sheri M Krams
BACKGROUND: MicroRNAs (miRNAs) are small noncoding RNA molecules that regulate the posttranscriptional expression of target genes and are important regulators in immune responses. Previous studies demonstrated that the miRNA, miR-182 was significantly increased during allograft rejection. Further, the transcription factor Forkhead box (FOX) protein 1, (FOXO1) was shown to be a target of miR-182. The aim of this study is to further examine the role of miR-182 in alloimmune responses. METHODS: Transplantation of BALB/c cardiac allografts was performed in C57BL/6, miR-182, B6...
November 23, 2016: Transplantation
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