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Plants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 46
Author(s):  
Claudia Gutiérrez-García ◽  
Shiek S. S. J. Ahmed ◽  
Sathishkumar Ramalingam ◽  
Dhivya Selvaraj ◽  
Aashish Srivastava ◽  
...  

MicroRNAs (miRNAs) are small noncoding RNA molecules that play crucial post-transcriptional regulatory roles in plants, including development and stress-response signaling. However, information about their involvement in secondary metabolism is still limited. Murraya koenigii is a popular medicinal plant, better known as curry leaves, that possesses pharmaceutically active secondary metabolites. The present study utilized high-throughput sequencing technology to investigate the miRNA profile of M. koenigii and their association with secondary metabolite biosynthesis. A total of 343,505 unique reads with lengths ranging from 16 to 40 nt were obtained from the sequencing data, among which 142 miRNAs were identified as conserved and 7 as novel miRNAs. Moreover, 6078 corresponding potential target genes of M. koenigii miRNAs were recognized in this study. Interestingly, several conserved and novel miRNAs of M. koenigii were found to target key enzymes of the terpenoid backbone and the flavonoid biosynthesis pathways. Furthermore, to validate the sequencing results, the relative expression of eight randomly selected miRNAs was determined by qPCR. To the best of our knowledge, this is the first report of the M. koenigii miRNA profile that may provide useful information for further elucidation of the involvement of miRNAs in secondary metabolism. These findings might be crucial in the future to generate artificial-miRNA-based, genetically engineered M. koenigii plants for the overproduction of medicinally highly valuable secondary metabolites.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Irene Consuegra ◽  
Samanta Gasco ◽  
María Jesús Serramía ◽  
José Luis Jiménez ◽  
Maria Jose Mellado ◽  
...  

AbstractmiRNAs have been extensively studied in pathological conditions, including viral infections, such as those provoked by HIV-1. Several cellular and circulating miRNAs are altered during HIV-1 infection, with either beneficial effects on host defenses or enhanced virus infectivity. Blood samples were collected in sterile EDTA tubes and plasma was separated and stored, as were PBMCs. RNA was isolated and reverse-transcribed. Finally, the miRNA gene expression profile was assessed using TaqMan Array Human microRNA Card A v2.0. A comprehensive statistical analysis was performed on the results obtained. This is the first study on miRNAs in HIV-1 paediatric patients, and a miRNA profile differentiating patients starting combination antiretroviral therapy (cART) at different times after HIV-1 diagnosis was established. Thirty-four miRNAs were observed to have different expression levels between the control group and the cART group. The data indicates the need to start cART as soon as possible after the establishment of HIV-1 infection to assure the best outcome possible. Finally, the selected 34 miRNAs may be used as biomarkers for prognosis and assessing therapy effectiveness. However, more research must be conducted to establish adequate quantitative correlations.


2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 670-670
Author(s):  
Lisa Stukenborg ◽  
Christian Sell ◽  
Manali Potnis

Abstract Progressive decline in adult stem cell function is a feature of aged tissues and contributes to multiple age-related diseases. Of particular interest are bone marrow mesenchymal stem cells, also known as bone marrow stromal cells (BMSCs), which are multipotent, and have significant therapeutic potential for age-related disease. BMSCs isolated from older individuals show decreased differentiation and characteristics of cell senescence. We and others find that inhibition of the mTOR pathway prevents senescence and extends BMSC proliferation. We have examined miRNA profiles in rapamycin-treated BMSCs to identify miRNAs that may be needed to maintain “stemness” and facilitate differentiation in this population in undifferentiated cell populations. The analysis reveals a distinct miRNA profile induced by rapamycin associated with enhanced differentiation capacity.


2021 ◽  
pp. annrheumdis-2021-220859
Author(s):  
Giacomo Emmi ◽  
Giacomo Bagni ◽  
Elena Lastraioli ◽  
Francesca Di Patti ◽  
Alessandra Bettiol ◽  
...  

ObjectivesBehçet’s syndrome (BS) is a rare systemic vasculitis often complicated by thrombotic events. Given the lack of validated biomarkers, BS diagnosis relies on clinical criteria.In search of novel biomarkers for BS diagnosis, we determined the profile of plasmatic circulating microRNAs (ci-miRNAs) in patients with BS compared with healthy controls (HCs).Methodsci-miRNA profile was evaluated by microarray in a screening cohort (16 patients with BS and 18 HCs) and then validated by poly(T) adaptor PCR (PTA-PCR) in a validation cohort (30 patients with BS and 30 HCs). Two disease control groups (30 patients with systemic lupus erythematosus (SLE) and 30 patients with giant cell arteritis (GCA) were also analysed.ResultsFrom the microarray screening, 29 deregulated (differentially expressed (DE)) human ci-miRNAs emerged. A hierarchical cluster analysis indicated that DE ci-miRNAs clearly segregated patients from controls, independently of clinical features. PTA-PCR analysis on the validation cohort confirmed the deregulation of miR-224-5p, miR-206 and miR-653-5p. The combined receiver operating characteristic (ROC) curve analyses showed that such ci-miRNAs discriminate BS from HCs (and BS with active vs inactive disease), as well as BS from patients with SLE and GCA.The functional annotation analyses (FAAs) showed that the most enriched pathways affected by DE ci-miRNAs (ie, cell–matrix interaction, oxidative stress and blood coagulation) are related to thrombo-inflammatory mechanisms. Accordingly, the expression of the three ci-miRNAs from the validation cohort significantly correlated with leucocyte reactive oxygen species production and plasma lipid peroxidation.ConclusionsThe ci-miRNA profile identified in this study may represent a novel, poorly invasive BS biomarker, while suggesting an epigenetic control of BS-related thrombo-inflammation.


2021 ◽  
Author(s):  
Maria Oczkowicz ◽  
Klaudia Pawlina-Tyszko ◽  
Małgorzata Świątkiewicz ◽  
Tomasz Szmatoła

Abstract Circulating miRNA molecules are intensively studied for their usefulness as biomarkers of civilization diseases. At the same time, it is known that diet can influence the level of miRNA expression in tissues. Our research aimed to determine how a diet containing various sources of fat (rapeseed oil, beef tallow, coconut oil) and different amounts of cDDGS (corn Dried Distilled Grains with Solubles) affects the miRNA profile in pig fat – the main source of circulating miRNAs. For this purpose, we used Next Generation Sequencing of miRNA libraries. We observed the highest number of differentially expressed miRNAs in the samples from animals that were fed with coconut oil in the diet compared to all other treatments. In contrary, cDDGS appeared to have little effect on miRNA expression. We propose a subset of di-et-related, adipose-specific, conservative miRNAs among mammals, namely: ssc-miR-99b, ssc-miR-4334-3p, ssc-miR-146b, ssc-miR-23a. Moreover, we observed that several miRNAs regulated by dietary fats are considered as biomarkers in human and animal diseases.


2021 ◽  
Vol 89 (6) ◽  
Author(s):  
Hugo Cuellar-Gomez ◽  
Ma Esther Ocharán-Hernández ◽  
Claudia C. Calzada-Mendoza ◽  
David A. Comoto-Santacruz

Bioengineered ◽  
2021 ◽  
Author(s):  
Zhirui Chen ◽  
Wen Zhang ◽  
Mengying Wu ◽  
Haixia Huang ◽  
Li Zou ◽  
...  

Author(s):  
Thaís Priscila Biassi ◽  
Elvira Maria Guerra-Shinohara ◽  
Patrícia Natália Silva Moretti ◽  
Valeria de Freitas Dutra ◽  
Ana Carolina Cabañas-Pedro ◽  
...  

2021 ◽  
Vol 18 ◽  
Author(s):  
Yuan-Kun Tu ◽  
Yu-Huan Hsueh ◽  
Hsien-Chang Huang

Background: Extracellular vesicle (EV)-based therapy has been identified as a leading alternative approach in several disease models. EV derived from the olfactory ensheathing cell (OEC) has been documented for its strong neuro-regenerative capacity. However, no information on its cargo that may contribute to its therapeutic effect has been available. Objective: To report the first miRNA profile of human OEC (hOEC) -EV, and investigate the neuroprotective effects. Methods: hOEC-EV was isolated and sequenced. We established in vitro experiments to assess the therapeutic potential of hOEC-EVs with respect to insulted neural progenitor cells (NPCs), and the angiogenesis effect. Secondary post-injury insults were imitated using t-BHP-mediated oxidative stress. Results: We noted a strong abundance of hOEC-EV-miRNAs, including hsa-miR148a-3p, has-miR151a-3p and several members of let-7 family. The common targets of 15 miRNAs among the top 20 miRNAs were thrombospondin 1 and cyclin dependent kinase 6. We demonstrated that hOEC-EVs promote normal NPC proliferation and differentiation to neuron-like morphologies with prolonged axons. hOEC-EVs protect cells from t-BHP mediated apoptosis. We also found that the migration rate of either NPCs or endothelial cells significantly improved with hOEC-EVs. Furthermore, in vitro tube formation assays indicated that angiogenesis, an important process for tissue repair, was significantly enhanced in human umbilical vein endothelial cells exposed to hOEC-EVs. Conclusion: Our results revealed that hOEC-EVs exert neuroprotective effects by protecting cells from apoptosis and promoting in vitro biological processes that are important to neural tissue repair, including neural cell proliferation, axonal growth, and cell migration, in addition to enhancing angiogenesis.


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