Preparation of a miR-155-activating nucleic acid nanoflower to study the molecular mechanism of miR-155 in inflammation DOI Creative Commons
Wenxin Wang,

Jie Geng,

Xiaohan Wu

и другие.

Molecular Medicine, Год журнала: 2022, Номер 28(1)

Опубликована: Июнь 17, 2022

At present, the molecular mechanisms underlying inflammation remain unclear. In recent years, research on has focused stimulating cell by using exogenous pro-inflammatory substances such as lipopolysaccharide (LPS) or inflammatory factors. To investigate mechanism of from a new perspective, we designed nucleic acid nanoflowers (NFs) complex to directly activate genes study response without need for external microbial factors trigger an response. An RNAa-type target gene-activated NFs was designed. Human umbilical vein endothelial cells (HUVECs) were transfected with carrying small activating RNA (saRNAs) co-activate microRNA (miR)-155 and SHIP1 genes. After activation (RNAa)-type transferred into HUVECs, expression miR-155 cancer-related increased, anti-inflammatory reduced, proliferation migration promoted. IL-1β protein levels decreased downregulated. When its both activated, unaltered, maintaining homeostasis. This points towards overexpression can inflammation, that act switch role in development inflammation.

Язык: Английский

MALAT-1: Immunomodulatory lncRNA hampering the innate and the adaptive immune arms in triple negative breast cancer DOI Creative Commons

Radwa Y. Mekky,

Mai F. Ragab,

Tamer Manie

и другие.

Translational Oncology, Год журнала: 2023, Номер 31, С. 101653 - 101653

Опубликована: Март 11, 2023

Triple negative breast cancer (TNBC) is known as hot immunogenic tumor. Yet, it one of the most aggressive BC subtypes. TNBC evolve several tactics to evade immune surveillance phenomena, which shedding natural killer (NK) cells activating ligands such MICA/B and/or by inducing expression checkpoints PD-L1 and B7-H4. MALAT-1 an oncogenic lncRNA. profile not well investigated. The study aims at exploring role in patients cell lines identify its molecular mechanism altering both innate adaptive present tumor microenvironment (n = 35) were recruited. Primary NK cytotoxic T lymphocytes isolated from normal individuals using selection method. MDA-MB-231 cultured transfected oligonucleotides lipofection technique. Screening ncRNAs was performed q-RT-PCR. Immunological functional analysis experiments upon co-culturing primary LDH assay. Bioinformatics potential microRNAs targeted MALAT-1. significantly upregulated patinets with a profound compared their counterparts. Correlation revealed positive correlation between MALAT-1, size lymph node metastasis. Knocking down resulted significant induction MICA/B, repression B7-H4 levels. Enhancement activity co-cultured CD8+ siRNAs cells. In silico that miR-34a miR-17–5p are targets MALAT-1; accordingly, they found be downregulated patients. Forcing Ectopic repressed checkpoints. Validations MALAT-1/miR-34a" "MALAT-1/miR-17–5p axes series co-transfections assessment This proposes novel epigenetic alteration exerted mainly mediates suppression events partially via targeting miR-34a/MICA/B miR-175p/PD-L1/B7-H4 lines.

Язык: Английский

Процитировано

35

Tear Film MicroRNAs as Potential Biomarkers: A Review DOI Open Access

Jeremy Altman,

Garrett Jones,

Saleh Ahmed

и другие.

International Journal of Molecular Sciences, Год журнала: 2023, Номер 24(4), С. 3694 - 3694

Опубликована: Фев. 12, 2023

MicroRNAs are non-coding RNAs that serve as regulatory molecules in a variety of pathways such inflammation, metabolism, homeostasis, cell machinery, and development. With the progression sequencing methods modern bioinformatics tools, novel roles microRNAs mechanisms pathophysiological states continue to expand. Advances detection have further enabled larger adoption studies utilizing minimal sample volumes, allowing analysis low-volume biofluids, aqueous humor tear fluid. The reported abundance extracellular these biofluids has prompted explore their biomarker potential. This review compiles current literature reporting human fluid association with ocular diseases including dry eye disease, Sjögren’s syndrome, keratitis, vernal keratoconjunctivitis, glaucoma, diabetic macular edema, retinopathy, well non-ocular diseases, Alzheimer’s breast cancer. We also summarize known shed light on future this field.

Язык: Английский

Процитировано

19

Regulatory RNAs in immunosenescence DOI Creative Commons
Atefe Ghamar Talepoor, Mehrnoosh Doroudchi

Immunity Inflammation and Disease, Год журнала: 2024, Номер 12(3)

Опубликована: Март 1, 2024

Abstract Background Immunosenescence is a multifactorial stress response to different intrinsic and extrinsic insults that cause immune deterioration accompanied by genomic or epigenomic perturbations. It now widely recognized genes proteins contributing in the process of immunosenescence are regulated various noncoding (nc) RNAs, including microRNAs (miRNAs), long ncRNAs, circular RNAs. Aims This review article aimed evaluate regulatore RNAs roles immunosenescence. Methods We analyzed publications were focusing on regulatory several aspects Results In setting, ncRNAs have been found play at both transcriptional post‐transcriptional levels. These factors cooperate regulate initiation gene expression programs sustaining senescence phenotype proinflammatory responses. Conclusion complex with pivotal alterations function occurring age. The extensive network drive immunosenescence‐related features mainly directed variety such as miRNAs, lncRNAs, circRNAs. Latest findings about regulation innate adaptive cells well their role pathways, provide better understanding

Язык: Английский

Процитировано

5

Unraveling the Role of microRNAs in the Metastatic Landscape of Gastric Cancer DOI Creative Commons

Arefeh Zabeti Touchaei,

Sogand Vahidi

Опубликована: Янв. 1, 2025

Gastric cancer (GC) continues to pose a major health issue worldwide, and diagnoses made at advanced stages frequently result in unfavorable outcomes. The metastatic spread of GC presents substantial therapeutic challenges, necessitating deeper understanding the tumor microenvironment (TME) its interactions with cells. MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression have been identified as key factors metastasis GC. This review explores biogenesis functional mechanisms miRNAs, highlighting their dual roles oncogenes suppressors metastasis. We discuss specific miRNAs facilitate progression by influencing pathways related invasion, angiogenesis, immune evasion. Furthermore, we examine potential diagnostic prognostic biomarkers, offering insights into utility timely identification tailored approaches. By elucidating complex regulatory networks involving this underscores significance both targets biomarkers management gastric cancer.

Язык: Английский

Процитировано

0

Identification and Validation of Potential miRNAs, as Biomarkers for Sepsis and Associated Lung Injury: A Network-Based Approach DOI Open Access
Shaniya Ahmad, Mohd Murshad Ahmed, P.M.Z. Hasan

и другие.

Genes, Год журнала: 2020, Номер 11(11), С. 1327 - 1327

Опубликована: Ноя. 10, 2020

Sepsis is a dysregulated immune response disease affecting millions worldwide. Delayed diagnosis, poor prognosis, and heterogeneity make its treatment ineffective. miRNAs are imposingly involved in personalized medicine such as therapeutics, due to their high sensitivity accuracy. Our study aimed reveal the biomarkers that may be sepsis lung injury using computational approach vivo validation studies. A miRNA Gene Expression Omnibus (GEO) dataset based on former analysis of blood samples was used identify differentially expressed (DEMs) associated hub genes. Sepsis-associated genes from Comparative Toxicogenomics Database (CTD) overlapped with identified DEM targets were utilized for network construction. In total, 317 found regulated by 10 DEMs (three upregulated, namely miR-4634, miR-4638-5p, miR-4769-5p, seven downregulated, miR-4299, miR-451a, miR181a-2-3p, miR-16-5p, miR-5704, miR-144-3p, miR-1290). Overall (HIP1, GJC1, MDM4, IL6R, ERC1) miR-16-5p (SYNRG, TNRC6B, LAMTOR3) centrality measures (degree, betweenness, closeness). tissue showed significantly downregulated expression corroborating our findings, whereas miR-181a-2-3p miR-451a upregulated contrast approach. conclusion, differential pattern reported this help unravel many unexplored regulatory pathways, leading identification critical molecular increased drug efficacy organ injuries.

Язык: Английский

Процитировано

29

Altered exosomal miRNA profiles in patients with paraneoplastic cerebellar degeneration DOI Creative Commons
Eirik Tveit Solheim, Liv Cecilie Vestrheim Thomsen, Line Bjørge

и другие.

Annals of Clinical and Translational Neurology, Год журнала: 2024, Номер unknown

Опубликована: Окт. 29, 2024

Abstract Objective Patients with ovarian cancer (OC) may develop anti‐Yo‐associated paraneoplastic cerebellar degeneration (PCD)—a ataxia associated tumor‐induced autoimmunity against CDR2 and CDR2L proteins. Dysregulation of circulating exosomal microRNAs (miRNAs) occur in OC. Here, we investigated whether PCD is changes the miRNA profiles OC patients. Methods Serum exosomes were isolated from patients ( n = 15 ), 14 ) healthy controls (HC, ). Small RNA sequencing was used to identify differentially expressed miRNAs. Receiver operating characteristic curves evaluate biomarker sensitivity specificity, target prediction analysis employed elucidate gene targets. Results exhibited a distinct expression profile. We detected 103 miRNAs compared without 139 controls. Particularly miR‐486‐5p, miR‐4732‐5p, miR‐98‐5p miR‐21‐5p notable specificity for discriminating both showed that several targeted genes. Interpretation Our results demonstrate exhibit profile PCD. Several diagnostic potential hold relevance understanding pathogenesis

Язык: Английский

Процитировано

3

Dectin-1 signaling coordinates innate and adaptive immunity for potent host defense against viral infection DOI Creative Commons
Hyeong Won Kim, Mi-Kyeong Ko, So Hui Park

и другие.

Frontiers in Immunology, Год журнала: 2023, Номер 14

Опубликована: Июнь 2, 2023

Background Most commercial foot-and-mouth disease (FMD) vaccines have various disadvantages, such as low antibody titers, short-lived effects, compromised host defense, and questionable safety. Objectives To address these shortcomings, we present a novel FMD vaccine containing Dectin-1 agonist, β-D-glucan, an immunomodulatory adjuvant. The proposed was developed to effectively coordinate innate adaptive immunity for potent defense against viral infection. Methods We demonstrated β-D-glucan mediated immune responses in mice pigs vitro vivo . expressions of pattern recognition receptors, cytokines, transcription factors, co-stimulatory molecules were promoted via β-D-glucan. Results elicited robust cellular response early, mid-, long-term immunity. Moreover, it exhibited by modulating host’s Conclusion Our study provides promising approach overcoming the limitations conventional vaccines. Based on vaccine’s safety efficacy, represents breakthrough among next-generation

Язык: Английский

Процитировано

8

Micro-Players of Great Significance—Host microRNA Signature in Viral Infections in Humans and Animals DOI Open Access
Ewa Ostrycharz, Beata Hukowska-Szematowicz

International Journal of Molecular Sciences, Год журнала: 2022, Номер 23(18), С. 10536 - 10536

Опубликована: Сен. 11, 2022

Over time, more and is becoming known about micro-players of great significance. This particularly the case for microRNAs (miRNAs; miR), which have been found to participate in regulation many physiological pathological processes both humans animals. One such process viral infection animals, host miRNAs—alone or conjunction with virus—interact on two levels: viruses may regulate host’s miRNAs evade its immune system, while can play anti- pro-viral roles. The purpose this comprehensive review present key involved infections We summarize data available literature, indicating that signature human mainly include 12 (i.e., miR-155, miR-223, miR-146a, miR-122, miR-125b, miR-132, miR-34a, miR -21, miR-16, miR-181 family, let-7 miR-10a), 10 are commonly animals miR-145, miR-21, miR-15a/miR-16 cluster, miR-122) context. Knowledge different biological functions they help understanding pathogenesis diseases, facilitating future development therapeutic agents

Язык: Английский

Процитировано

13

Characterization of the SARS-CoV-2 Genome 3′-Untranslated Region Interactions with Host MicroRNAs DOI Creative Commons
Caleb J. Frye, Caylee L. Cunningham, Mihaela‐Rita Mihailescu

и другие.

ACS Omega, Год журнала: 2024, Номер unknown

Опубликована: Авг. 16, 2024

The 2019 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has marked the spread of a novel human coronavirus. SARS-CoV-2 exhibited increased disease severity and immune evasion across its variants, molecular mechanisms behind these phenomena remain largely unknown. Conserved elements viral genome, such as secondary structures within 3′-untranslated region (UTR), could prove crucial in furthering our understanding host–virus interface. Analysis genome 3′-UTR revealed potential for host microRNA (miR) binding sites, allowing sequence-specific interactions. In this study, we demonstrate that binds cellular miRs miR-34a-5p, miR-34b-5p, miR-760-3p vitro. Native gel electrophoresis steady-state fluorescence spectroscopy were utilized to biophysically characterize their predicted sites 3′-UTR. Additionally, investigated 2′-fluoro-d-arabinonucleic acid (FANA) analogs competitive inhibitors These modulate translation granulin (GRN), interleukin-6 (IL-6), IL-6 receptor (IL-6R), all which are key modulators activators JAK/STAT3 signaling implicated regulation response. Thus, propose hijacking identify mechanism modulation virus. detailed study have drive development antiviral treatments SARS-CoV-2, through direct targeting virus–host

Язык: Английский

Процитировано

2

Survivin; a novel therapeutic target that correlates with survival of autoreactive T lymphocytes obtained from patients with ankylosing spondylitis DOI
Navid Shomali, Behzad Baradaran, Amin Daei Sorkhabi

и другие.

Gene, Год журнала: 2022, Номер 844, С. 146829 - 146829

Опубликована: Авг. 19, 2022

Язык: Английский

Процитировано

11