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BACKGROUND: Laparoscopic radical gastrectomy is widely used, and perioperative complications have become a highly concerned issue. AIM: To develop a predictive model for complications in laparoscopic radical gastrectomy for gastric cancer to better predict the likelihood of complications in gastric cancer patients within 30 days after surgery, guide perioperative treatment strategies for gastric cancer patients, and prevent serious complications. METHODS: In total, 998 patients who underwent laparoscopic radical gastrectomy for gastric cancer at 16 Chinese medical centers were included in the training group for the complication model, and 398 patients were included in the validation group. The clinicopathological data and 30-d postoperative complications of gastric cancer patients were collected. Three machine learning methods, lasso regression, random forest, and artificial neural networks, were used to construct postoperative complication prediction models for laparoscopic distal gastrectomy and laparoscopic total gastrectomy, and their prediction efficacy and accuracy were evaluated. RESULTS: The constructed complication model, particularly the random forest model, could better predict serious complications in gastric cancer patients undergoing laparoscopic radical gastrectomy. It exhibited stable performance in external validation and is worthy of further promotion in more centers. CONCLUSION: Using the risk factors identified in multicenter datasets, highly sensitive risk prediction models for complications following laparoscopic radical gastrectomy were established. We hope to facilitate the diagnosis and treatment of preoperative and postoperative decision-making by using these models.
Subject(s)
Laparoscopy , Stomach Neoplasms , Humans , Stomach Neoplasms/pathology , Retrospective Studies , Postoperative Complications/epidemiology , Postoperative Complications/etiology , Postoperative Complications/surgery , Laparoscopy/adverse effects , Gastrectomy/adverse effects , Gastrectomy/methods , Treatment OutcomeABSTRACT
Patchoulol is an important sesquiterpenoid in the volatile oil of Pogostemon cablin, and is also considered to be the main contributing component to the pharmacological efficacy and fragrance of P. cablin oil, which has antibacterial, antitumor, antioxidant, and other biological activities. Currently, patchoulol and its essential oil blends are in high demand worldwide, but the traditional plant extraction method has many problems such as wasting land and polluting the environment. Therefore, there is an urgent need for a new method to produce patchoulol efficiently and at low cost. To broaden the production method of patchouli and achieve the heterologous production of patchoulol in Saccharomyces cerevisiae, the patchoulol synthase(PS) gene from P. cablin was codon optimized and placed under the inducible strong promoter GAL1 to transfer into the yeast platform strain YTT-T5, thereby obtaining strain PS00 with the production of(4.0±0.3) mg·L~(-1) patchoulol. To improve the conversion rate, this study used protein fusion method to fuse SmFPS gene from Salvia miltiorrhiza with PS gene, leading to increase the yield of patchoulol to(100.9±7.4) mg·L~(-1) by 25-folds. By further optimizing the copy number of the fusion gene, the yield of patchoulol was increased by 90% to(191.1±32.7) mg·L~(-1). By optimizing the fermentation process, the strain was able to achieve a patchouli yield of 2.1 g·L~(-1) in a high-density fermentation system, which was the highest yield so far. This study provides an important basis for the green production of patchoulol.
Subject(s)
Oils, Volatile , Pogostemon , Sesquiterpenes , Saccharomyces cerevisiae/genetics , Saccharomyces cerevisiae/metabolism , Sesquiterpenes/metabolism , Oils, Volatile/metabolismABSTRACT
Fibroblast activation protein-α (FAP), a type-II transmembrane serine protease, is rarely expressed in normal tissues but highly abundant in pathological diseases, including fibrosis, arthritis, and cancer. Ever since its discovery, we have deciphered its structure and biological properties and continue to investigate its roles in various diseases while attempting to utilize it for targeted therapy. To date, no significant breakthroughs have been made in terms of efficacy. However, in recent years, several practical applications in the realm of imaging diagnosis have been discovered. Given its unique expression in a diverse array of pathological tissues, the fundamental biological characteristics of FAP render it a crucial target for disease diagnosis and immunotherapy. To obtain a more comprehensive understanding of the research progress of FAP, its biological characteristics, involvement in diseases, and recent targeted application research have been reviewed. Moreover, we explored its development trend in the direction of clinical diagnoses and treatment.
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PURPOSE: Glucose metabolism underpins diabetic cataracts (DCs), but the relationship between the two remains unclear. Here, we tested the aqueous humour (AH) of patients with DCs to elucidate glucose metabolite levels. METHODS: In this study, aqueous humour (AH) samples were collected preoperatively from DC eyes (n = 37) and age-related cataract eyes (n = 37) from 74 patients (74 eyes) undergoing uncomplicated cataract surgery. The content of glucose, pyruvate, L-lactate were detected by biochemical methods and advanced glycation end-products (AGEs) was detemined using enzyme-linked immunosorbent assay (ELISA) technique. Furthermore, the ratios of glucose/pyruvate and L-lactate/pyruvate in the AH were calculated. In addition, we calculated the correlation between glucose levels and AGEs in the AH. RESULTS: The concentrations of glucose, pyruvate and AGEs in the DC group were higher than those in the control group. Significantly lower levels of L-lactate in the AH were found in the DC group. We calculated the glucose/pyruvate ratio and the L-lactate/pyruvate ratio in the AH, which showed that glucose metabolism was changed in the AH from DC patients. Interestingly, we observed that AGEs in the AH were significantly correlated with increased anterior chamber glucose permeability. A stronger correlation was found in the subgroups of male patients, younger patients, and patients with poor glycaemic control status. CONCLUSIONS: Comparison of the levels of glucose metabolism-related products in the AH in the DC group highlight a potential pathological mechanism for DC from a glucose metabolism perspective. The findings indicated an alteration in the metabolic pathways of energy metabolism and amino acids in the AH of DC patients.
Subject(s)
Aqueous Humor , Cataract , Glucose , Lactates , Pyruvates , Humans , Aqueous Humor/metabolism , Diabetes Complications , Cataract/blood , Cataract/metabolism , Glucose/metabolism , Lactates/metabolism , Pyruvates/metabolism , Glycation End Products, Advanced , Male , Female , Middle Aged , Aged , Aged, 80 and over , Prospective StudiesABSTRACT
OBJECTIVE: To investigate the biological mechanisms underlying the effect of the Chinese herbal medicine Oxalis corniculata on human prostate cancer PC-3 cells. METHODS: Through in vitro experiment, we treated human prostate cancer PC-3 cells with different concentrations of Oxalis corniculata, assessed the viability of the cells by MTT assay, examined their apoptosis by flow cytometry, evaluated their migration and invasiveness by Transwell assay, and determined the expressions of the proteins p65, p-p65, IκBα and p-IκBα in the NF-κB pathway using protein imprinting technology. RESULTS: Compared with the blank control, Oxalis corniculata significantly inhibited the proliferation and induced the apoptosis of the PC-3 cells (P< 0.05), suppressed their migration and invasiveness in a dose-dependent manner (P< 0.05), and upregulated the expression of IκBα and downregulated those of p-p65 and p-IκBα in the NF-κB pathway (P< 0.05). CONCLUSION: Oxalis corniculata can inhibit the proliferation, migration and invasiveness and induce the apoptosis of human prostate cancer PC cells, which may be attributed to its abilities of inhibiting the expressions of p-p65 and p-IκBα and regulating the activity of the NF-κB pathway.
Subject(s)
Oxalidaceae , Prostatic Neoplasms , Male , Humans , NF-kappa B/metabolism , NF-KappaB Inhibitor alpha/pharmacology , PC-3 Cells , Oxalidaceae/metabolism , Prostatic Neoplasms/metabolism , ApoptosisABSTRACT
In chip-based quantum key distribution (QKD) systems, the non-ideal quantum state preparation due to the imperfect electro-optic phase modulators (EOPM) decreases the secret key rate and introduces potential vulnerabilities. We propose and implement an on-chip transmittance-invariant phase modulator (TIPM) to solve this problem. Simulated and experimental results show that TIPM can eliminate the correlation between phase, intensity, and polarization of quantum states caused by phase-dependent loss. The design can tolerate a significant fabrication mismatch and is universal to multi-material platforms. Furthermore, TIPM increases the modulation depth achievable by EOPMs in standard process design kit (PDK). The proposal of TIPM can improve the practical security and performance of the chip-based QKD systems.
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Noninflammatory clearance of dying cells by professional phagocytes, termed efferocytosis, is fundamental in both homeostasis and inflammatory fibrosis disease but has not been confirmed to occur in chronic pancreatitis (CP). Here, we investigated whether efferocytosis constitutes a novel regulatory target in CP and its mechanisms. PRSS1 transgenic (PRSS1Tg) mice were treated with caerulein to mimic CP development. Phospholipid metabolite profiling and epigenetic assays were performed with PRSS1Tg CP models. The potential functions of Atp8b1 in CP model were clarified using Atp8b1-overexpressing adeno-associated virus, immunofluorescence, enzyme-linked immunosorbent assay(ELISA), and lipid metabolomic approaches. ATAC-seq combined with RNA-seq was then used to identify transcription factors binding to the Atp8b1 promoter, and ChIP-qPCR and luciferase assays were used to confirm that the identified transcription factor bound to the Atp8b1 promoter, and to identify the specific binding site. Flow cytometry was performed to analyze the proportion of pancreatic macrophages. Decreased efferocytosis with aggravated inflammation was identified in CP. The lysophosphatidylcholine (LPC) pathway was the most obviously dysregulated phospholipid pathway, and LPC and Atp8b1 expression gradually decreased during CP development. H3K27me3 ChIP-seq showed that increased Atp8b1 promoter methylation led to transcriptional inhibition. Atp8b1 complementation substantially increased the LPC concentration and improved CP outcomes. Bhlha15 was identified as a transcription factor that binds to the Atp8b1 promoter and regulates phospholipid metabolism. Our study indicates that the acinar Atp8b1/LPC pathway acts as an important "find-me" signal for macrophages and plays a protective role in CP, with Atp8b1 transcription promoted by the acinar cell-specific transcription factor Bhlha15. Bhlha15, Atp8b1, and LPC could be clinically translated into valuable therapeutic targets to overcome the limitations of current CP therapies.
Subject(s)
Adenosine Triphosphatases , Lysophosphatidylcholines , Macrophages , Pancreatitis, Chronic , Animals , Mice , Acinar Cells/metabolism , Adenosine Triphosphatases/genetics , Adenosine Triphosphatases/metabolism , Ceruletide/toxicity , Histones/metabolism , Inflammation/metabolism , Lysophosphatidylcholines/genetics , Lysophosphatidylcholines/metabolism , Macrophages/metabolism , Pancreatitis, Chronic/chemically induced , Pancreatitis, Chronic/genetics , Pancreatitis, Chronic/metabolism , Phospholipid Transfer Proteins/genetics , Phospholipid Transfer Proteins/metabolism , Transcription Factors/metabolismABSTRACT
AIM: To investigate potential gene changes in trabecular meshwork (TM) induced by dexamethasone (DEX) in steroid-induced glaucoma (SIG). METHODS: The expression data of 24 cases from a public functional genomics data were sorted to identify the mechanisms of action of DEX on the TM. The relationships of the differentially expressed genes (DEGs) were enriched using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. In addition, the hub genes were screened by the Search Tool for the Retrieval of Interacting Genes Database (STRING) and Cytoscape tools. Finally, human TM cells (HTMCs) were treated with DEX to preliminarily explore the function of hub genes. RESULTS: Totally 47 DEGs, including 21 downregulated and 26 upregulated genes were identified. The primary enriched results of the DEGs consisted of inflammatory response, extracellular matrix (ECM), negative regulation of cell proliferation, TNF signalling pathway and the regulation of tryptophan channels by inflammatory mediators. Subsequently, pro-melanin-enriched hormone (PMCH) and Bradykinin B1 receptor (BDKRB1) were screened as hub genes. It is verified in GSE37474 data set. Western blot and quantitative real-time polymerase chain reaction (qPCR) results showed that protein and RNA expression levels of BDKRB1 were significantly decreased after DEX treatment, while PMCH was not significantly changed. CONCLUSION: BDKRB1 may be a key gene involved in SIG onset, providing a suitable therapeutic target for improving the prognosis of SIG patients.
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BACKGROUND: Early diagnosis and treatment of chronic pancreatitis (CP) are limited. In this study, St13, a co-chaperone protein, was investigated whether it constituted a novel regulatory target in CP. Meanwhile, we evaluated the value of micro-PET/CT in the early diagnosis of CP. METHODS: Data from healthy control individuals and patients with alcoholic CP (ACP) or non-ACP (nACP) were analysed. PRSS1 transgenic mice (PRSS1Tg) were treated with ethanol or caerulein to mimic the development of ACP or nACP, respectively. Pancreatic lipid metabolite profiling was performed in human and PRSS1Tg model mice. The potential functions of St13 were investigated by crossing PRSS1Tg mice with St13-/- mice via immunoprecipitation and lipid metabolomics. Micro-PET/CT was performed to evaluate pancreatic morphology and fibrosis in CP model. RESULTS: The arachidonic acid (AA) pathway ranked the most commonly dysregulated lipid pathway in ACP and nACP in human and mice. Knockout of St13 exacerbated fatty replacement and fibrosis in CP model. Sdf2l1 was identified as a binding partner of St13 as it stabilizes the IRE1α-XBP1s signalling pathway, which regulates COX-2, an important component in AA metabolism. Micro-PET/CT with 68Ga-FAPI-04 was useful for evaluating pancreatic morphology and fibrosis in CP model mice 2 weeks after modelling. CONCLUSION: St13 is functionally activated in acinar cells and protects against the cellular characteristics of CP by binding Sdf2l1, regulating AA pathway. 68Ga-FAPI-04 PET/CT may be a very valuable approach for the early diagnosis of CP. These findings thus provide novel insights into both diagnosis and treatment of CP.
Subject(s)
Acinar Cells , Endoribonucleases , Animals , Humans , Mice , Acinar Cells/metabolism , Arachidonic Acid/metabolism , Carrier Proteins/metabolism , Endoribonucleases/metabolism , Fibrosis , Gallium Radioisotopes , Mice, Knockout , Positron Emission Tomography Computed Tomography , Protein Serine-Threonine Kinases , Trypsin/metabolism , Tumor Suppressor Proteins/metabolismABSTRACT
Generation of a promising antioxidative reagent with superior biocompatibility is urgently needed to remedy spinal cord injuries (SCI), repair the damaged neurons and restrain the secondary injuries caused by inflammation-induced oxidative stress. Inhibitory elements in the injury sites and necessitous inherent neural regeneration ability were major challenges for functional recovery after spinal cord injuries. We here developed a highly bioactive iridium complex (IrFPHtz) with enhanced antioxidative activities and improved SCI therapeutic efficacy. Both in vivo and in vitro, IrFPHtz has exhibited neuroprotective and anti-inflammatory properties. Mechanically, IrFPHtz directly targets SOD1 and upregulates the expression of SOD1 to eliminate the excess Reactive Oxygen Species (ROS) production induced by SCI, and thus protecting neuron cells from further damage. As a result, IrFPHtz safeguarded the neurons and myelin sheaths against trauma, lessened glial scar conformations and facilitated the repair of neurons and long axon expansion in the glial scar. Furthermore, IrFPHtz significantly ameliorated the behavioral functions of SCI mice and promoted a satisfactory curative effect. Therefore, this study sheds light on a novel method for SCI treatment using IrFPHtz as a potential drug and implicates the clinical significance of metal complexes in diseases featuring with upregulated ROS species.
Subject(s)
Coordination Complexes , Spinal Cord Injuries , Animals , Antioxidants/pharmacology , Antioxidants/therapeutic use , Coordination Complexes/pharmacology , Gliosis , Inflammation/drug therapy , Iridium , Mice , Reactive Oxygen Species/metabolism , Spinal Cord , Spinal Cord Injuries/therapy , Superoxide Dismutase-1/pharmacology , Superoxide Dismutase-1/therapeutic useABSTRACT
Bladder cancer is the most common malignancy of the urinary system. Compound Kushen Injection (CKI) is a Chinese medicinal preparation that has been widely used in the treatment of various types of cancers in the past two decades. However, the pharmacological effect of CKI on bladder cancer is not still completely understood. In the current study, network pharmacology combined with bioinformatics was used to elucidate the therapeutic mechanism and potential targets of CKI in bladder cancer. The mechanism by which CKI was effective against bladder cancer was further verified in vitro using human bladder cancer cell line T24. Network pharmacology analysis identified 35 active compounds and 268 target genes of CKI. Bioinformatics data indicated 5500 differentially expressed genes associated with bladder cancer. Common genes of CKI and bladder cancer suggested that CKI exerted anti-bladder cancer effects by regulating genes such as MMP-9, JUN, EGFR, and ERK1. Functional enrichment analysis indicated that CKI exerted therapeutic effects on bladder cancer by regulating certain biological processes, including cell proliferation, cell migration, and cell apoptosis. In addition, Kyoto Encyclopedia of Genes and Genomes enrichment analysis implicated pathways related to cancer, bladder cancer, and the PI3K-Akt signaling pathway. Consistently, cell experiments indicated that CKI inhibited the proliferation and migration of T24 cells, and induced their apoptosis. Moreover, RT-qPCR and Western blot results demonstrated that CKI was likely to treat bladder cancer by down-regulating the gene and protein expression of MMP-9, JUN, EGFR, and ERK1. CKI inhibited the proliferation and migration, and induced the apoptosis of T24 bladder cancer cells through multiple biological pathways and targets. CKI also exhibited significant effects on the regulation of key genes and proteins associated with bladder cancer. Overall, our findings provide solid evidence and deepen current understanding of the therapeutic effects of CKI for bladder cancer, and further support its clinical use.
Subject(s)
Urinary Bladder Neoplasms , Computational Biology , Drugs, Chinese Herbal , Humans , Network Pharmacology , Phosphatidylinositol 3-Kinases , Urinary Bladder Neoplasms/drug therapy , Urinary Bladder Neoplasms/geneticsABSTRACT
PURPOSE: To investigate the penetrance of MYOC gene mutation in primary open-angle glaucoma (POAG) through systematic review and meta-analysis. To explore the factors affecting the penetrance of MYOC and provide evidence-based medical evidence for clinical work. METHODS: We searched all studies that reported the penetrance of MYOC mutation in PubMed, Embase, Web of Science, and Chinese databases including Wanfang, CNKI (China National Knowledge Infrastructure), and CBM (China Bio-Med). Random effects meta-analysis was conducted to estimate the penetrance of MYOC mutation in POAG. RESULTS: Fifty-two studies were included in this analysis after screening. Meta-analysis of the penetrance of MYOC mutation showed that the penetrance of MYOC mutation in POAG was 60% (95% CI: 51.0% to 68.0%) and the penetrance of MYOC mutation in POAG and suspected POAG was 68% (95% CI: 60.0% to 75.0%). The penetrance of MYOC mutation increases with age. Among Caucasians, Asians, and Africans, the penetrance of MYOC mutation in POAG was 55%, 71%, 54%, respectively, and the penetrance of MYOC mutation in POAG and suspected POAG was 64%, 83%, and 57%, respectively. Besides, the penetrance of different MYOC mutation sites was significantly discrepant. The penetrance of MYOC mutation in POAG ranged from 10.3% to 100% depending on the mutation sites. Some MYOC mutation sites have a certain population specificity, which is only pathogenic in Caucasians or Asians. CONCLUSIONS: The penetrance of MYOC mutation in POAG showed significant differences due to different mutation sites. The penetrance increased with the accrescent of age. Ethnic difference was an important factor affecting the penetrance of MYOC mutation. Knowing the rules and influencing factors of the penetrance of MYOC mutations is significant for the assessment of the risk of POAG in carriers with the MYOC mutation.
Subject(s)
Cytoskeletal Proteins/genetics , Eye Proteins/genetics , Glaucoma, Open-Angle , Glycoproteins/genetics , DNA Mutational Analysis , Glaucoma, Open-Angle/diagnosis , Humans , Mutation , PenetranceABSTRACT
BACKGROUND: The aim of this study was to analyze the effect of unilateral K-rod dynamic internal fixation on paraspinal muscles for lumbar degenerative diseases. METHODS: This study retrospectively collected 52 patients who underwent lumbar surgery with the K-rod group or PLIF. The operation time, intraoperative blood loss, postoperative drainage volume, postoperative exercise time were compared in the two groups. The visual analog scale (VAS) score and the oswestry dysfunction index (ODI) were employed to evaluate the clinical outcomes. The functional cross-sectional area (FCSA) of the paraspinal muscles and paraspinal muscles fat infiltration were measured to assess on the paraspinal muscles. RESULTS: As compared with the PLIF group, the operation time, the postoperative time in the field, and the average postoperative hospital stay in the K-rod internal fixation group were significantly shortened. At the last follow-up, both the groups showed significant improvement in the VAS score and ODI. The FCSA atrophy of the upper and lower adjacent segments (UAS and LAS) of the K-rod internal group was significantly less than that of the PLIF group. The extent of increase in the fatty infiltration of the paraspinal muscles in the K-rod group was significantly lesser than that in the PLIF group. The postoperative low back pain of the two groups of patients was significantly positively correlated with the FCSA atrophy. CONCLUSIONS: As compared to PLIF, the posterior lumbar unilateral K-rod dynamic internal fixation showed significantly lesser paraspinal muscle atrophy and fatty infiltration, which were significantly positively correlated with postoperative low back pain.
Subject(s)
Lumbosacral Region , Paraspinal Muscles , Fracture Fixation, Internal , Humans , Lumbosacral Region/diagnostic imaging , Lumbosacral Region/surgery , Paraspinal Muscles/diagnostic imaging , Postoperative Period , Retrospective StudiesABSTRACT
Infusing CRISPR/donor-loaded adeno-associated viral vectors (AAV/CRISPR) could enable in vivo hepatic gene editing to remedy hemophilia B (HB) with inherited deficiency of clotting factor IX (FIX). Yet, current regimens focus on correcting HB with simple mutations in the coding region of the F9, overlooking those carrying complicated mutations involving the regulatory region. Moreover, a possible adverse effect of treatment-related inflammation remains unaddressed. Here we report that a single DNA cutting-mediated long-range replacement restored the FIX-encoding function of a mutant F9 (mF9) carrying both regulatory and coding defects in a severe mouse HB model, wherein incorporation of a synthetic Alb enhancer/promoter-mimic (P2) ensured FIX elevation to clinically meaningful levels. Through single-cell RNA sequencing (scRNA-seq) of liver tissues, we revealed that a subclinical hepatic inflammation post-AAV/CRISPR administration regulated the vulnerability of the edited mF9-harboring host cells to cytotoxic T lymphocytes (CTLs) and the P2 activity in a hepatocytic subset-dependent manner via modulating specific sets of liver-enriched transcription factors (LETFs). Collectively, our study establishes an AAV/CRISPR-mediated gene-editing protocol applicable to complicated monogenetic disorders, underscoring the potentiality of improving therapeutic benefits through managing inflammation.
Subject(s)
Alleles , Clustered Regularly Interspaced Short Palindromic Repeats , Dependovirus/genetics , Factor IX/genetics , Hepatocytes/metabolism , Enhancer Elements, Genetic , Gene Editing/methods , Hemophilia B/genetics , Mutation , Promoter Regions, Genetic , Transcription Factors/metabolismABSTRACT
OBJECTIVE: Alzheimer's disease (AD) is a common neurodegenerative disease. This study was designed to investigate the roles of lncRNA NEAT1/miR-27a-3p axis in AD. METHODS: Amyloid protein was used to treat SH-SY5Y cells and rats to construct AD model. RT-qPCR was used to quantify lncRNA NEAT1 and micro-27a-3p in AD model cells. Western blot was used to determine the ß-amyloid-precursor-protein-cleaver-enzyme 1 (BACE1), amyloid, Tau protein and its phosphorylation, Caspase 3 protein and its lytic cell protein and amyloid precursor protein (APP). Flow cytometry was used to detect apoptosis. The cell activity was detected by CCK-8. The lncRNA NEAT1 and miR-27a-3p inhibition or over-expression vectors were constructed. The dual luciferase reporter gene and RNA pull-down assay were used to detect the targeting relationship between lncRNA NEAT1 and micro-27a-3p. The cognitive function of rats was tested by water maze. RESULTS: After being induced by amyloid protein, lncRNA NEAT1 was up-regulated while micro-27a-3p was down-regulated in SH-SY5Y cells. Apoptosis rate was increased and cell activity was decreased. Amyloid protein, BACE1 protein, APP protein, Tau protein and its phosphorylation, Caspase 3 protein and its lytic cell protein were up-regulated. Down-regulation of lncRNA NEAT1 or up-regulation of micro-27a-3p could reduce cell apoptosis, increase cell activity, down-regulate amyloid protein, BACE1 protein, APP protein, Tau protein and its phosphorylation, and up-regulate caspase 3 protein and its lysate protein. Dual luciferase reporter gene assay and RNA pull-down experiments revealed that micro-27a-3p was the target gene of lncRNA NEAT1. Down-regulation of micro-27a-3p could offset the changes caused by LncRNA NEAT1. AD caused cognitive dysfunction in rats, which was improved by down-regulation of lncRNA NEAT1. CONCLUSION: lncRNA NEAT1 regulates the development of AD by down-regulating micro-27a-3p.
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This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief as there are concerns about the reliability of the results. Concerns have been raised about the western blot bands in Figures 6 B + D having the same eyebrow shaped phenotype as found in many other publications as detailed here (https://pubpeer.com/publications/B32F93859FBAA13471ED0FFCA5BCB6). The journal requested the corresponding author to comment on these concerns and send the raw data, however the author was not able to provide uncropped images of the original gels. The Editor-in-Chief therefore no longer has confidence in the data and conclusions of this study.
Subject(s)
Alzheimer Disease/genetics , Alzheimer Disease/pathology , Apoptosis/genetics , Autophagy/genetics , Hippocampus/pathology , Immediate-Early Proteins/genetics , MicroRNAs/genetics , Neurons/pathology , Tumor Suppressor Proteins/genetics , Alzheimer Disease/psychology , Animals , Cell Survival/genetics , Cells, Cultured , Maze Learning , Mice , Mice, TransgenicABSTRACT
In this study, we analyzed the mechanism of hydroxysafflor yellow A (HSYA) for treating ischemic stroke (IS) based on network pharmacology tools, and verified the kernel targets via animal experiments. The targets of HSYA were collected via PharmMapper server and the IS-related targets were searched using Genecards, Online Mendelian Inheritance in Man, Therapeutic Target, and Disgenet databases. The targets identified from the above two steps were overlapped to acquire candidate targets involved in the effects of HSYA for treating IS. Subsequently, the Database for Annotation, Visualization, and Integrated Discovery was used for gene ontology analysis and the Kyoto encyclopedia of genes and genomes pathway analysis. Cytoscape 3.7.1 was applied to establish the component-target-pathway network. Potential core targets were obtained by protein-protein interaction analysis. Furthermore, Autodock Vina was used to identify core genes, and animal experiments was used to verify the expression level of core genes. On the basis of the modified neurologic severity score and the results of 2,3,5-Triphenyltetrazolium chloride and Hematoxylin-eosin staining, we confirmed that HSYA reduced the infarct volume in rats and protected neuronal cells in the hippocampal region after IS. Western blot and immunohistochemical staining showed that HSYA increased the expression of epidermal growth factor receptor, hypoxia inducible factor 1 alpha, and endothelial nitric oxide synthase (P < 0.05). The effects of HSYA on IS are mediated through several targets and pathways related to the regulation of oxidative stress and the renewal of cell and blood vessels while improving post-ischemic brain impairment.