Publications by authors named "Peifen Li"

The activation of fibroblasts into myofibroblasts and the expansion of myofibroblasts are key processes contributing to renal fibrosis; however, the precise underlying mechanisms remain largely unclear. In this study, we found that nuclear factor, interleukin 3 regulated (Nfil3), a basic leucine zipper transcription factor, was significantly upregulated in fibroblasts in kidney tissues from mouse models of unilateral ureteral obstruction (UUO)-induced renal fibrosis and kidney biopsies from patients with renal fibrosis. Conditional knockout of Nfil3 in fibroblasts (Nfil3S100a4) and global knockout of Nfil3 reduced UUO-induced accumulation of myofibroblasts and the severity of renal fibrosis in mice, whereas ectopic expression of Nfil3 in fibroblasts activated renal interstitial fibroblasts and initiated renal fibrosis.

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The dysregulation of N-methyladenosine (mA) on mRNAs is involved in the pathogenesis of rheumatoid arthritis (RA). Methyltransferase-like 3 (METTL3), serving as a central mA methyltransferase, is highly expressed in macrophages, synovial tissues and RA fibroblast-like synoviocytes (RA-FLS) of RA patients. However, METTL3-mediated mA modification on target mRNAs and the molecular mechanisms involved in RA-FLS remain poorly defined.

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The upregulation of methyltransferase-like 3 (METTL3) has been associated with the progression of esophageal cancer. However, METTL3-induced N-methyladenosine (mA) alterations on the downstream target mRNAs in esophageal squamous cell carcinoma (ESCC) are not yet fully understood. Our study revealed that silencing METTL3 resulted in a significant decrease in ESCC cell proliferation and metastasis in vitro and in vivo.

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Mutations in the genes of tumor cells and the disorder of immune microenvironment are the main factors of tumor development. The sensitivity of tumor cells to chemotherapy drugs affect the treatment of tumor. Nuclear transcription factor E4BP4 is dysregulated in a variety of malignant tumors.

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Background: Celastrol has been revealed to exhibit anticancer pharmacological activity, however, the molecular mechanisms of celastrol involved in pancreatic cancer remain to be further elucidated. The present study was to illustrate whether celastrol suppresses pancreatic cancer through modulating RNA mA modification.

Methods: Effect of celastrol treatment on the malignant phenotypes of pancreatic cancer cells was evaluated by CCK-8 assay, EdU assay, colony formation assay, flow cytometry analysis and subcutaneous xenograft experiments.

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Objectives: To explore the mechanism of transforming growth factor-β1 (TGF-β1) induce renal fibrosis.

Methods: Renal fibroblast NRK-49F cells treated with and without TGF-β1 were subjected to RNA-seq analysis. DESeq2 was used for analysis.

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Ribosome biogenesis is a cellular process critical for protein homeostasis during cell growth and multiplication. Our previous study confirmed up-regulation of ribosome biogenesis during endometriosis progression and malignant transition, thus anti-ribosome biogenesis may be effective for treating endometriosis and the associated complications. A mouse model with human endometriosis features was established and treated with three different drugs that can block ribosome biogenesis, including inhibitors against mTOR/PI3K (GSK2126458) and RNA polymerase I (CX5461 and BMH21).

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DW2 is an important industrial strain for bacitracin production, and it is also used for biochemical production, however, the lack of effective toolkit for precise regulation of gene expression hindered its application seriously. Here, a gradient strength promoter library was constructed based on bacitracin synthetase gene cluster promoter P. First, different P promoter variants were constructed via coupling P with various 5'-UTRs, and expression ranges of 32.

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Objective: To explore the application effect of detailed nursing intervention in neonatal septicemia.

Methods: Altogether 60 neonates of neonatal septicemia admitted to our hospital from November 2019 to October 2020 were selected as the research participants, and all the children have received routine treatment, among which 30 neonates received routine nursing intervention as the regular group, and the remaining 30 received detailed nursing intervention as the detail group. The clinical effects, improvement of clinical symptoms, length of stay, and guardian satisfaction were compared, and the levels of serum inflammatory factors (TNF-α, IL-6 and IL-17) and immune function indicators (CD4+, CD8+) before and after nursing intervention were detected.

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A pathogenic mutant, BCG183, was obtained by screening the T-DNA insertion library of . A novel pathogenicity-related gene , which encodes kynurenine 3-monooxygenase (KMO), was isolated and identified via thermal asymmetric interlaced PCR, bioinformatics analyses, and KMO activity measurement. The mutant BCG183 grew slowly, did not produce conidia and sclerotia, had slender hyphae, and presented enhanced pathogenicity.

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The blood clam, Tegillarca granosa, is one of the few bivalve molluscs containing hemoglobin (Hb). In the present study, we purified two types of T. granosa hemoglobin, Tg-HbI and Tg-HbII, using size exclusion chromatography and measured their antibacterial and peroxidase activities.

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Bioassay-guided isolation of the aerial part of Scutellaria barbata yielded three new neo-clerodane diterpenoids scutebatas P-R (1-3), together with two known ones: scutebata E (4) and scutebarbatine B (5). The chemical structures of the isolated compounds were elucidated by spectroscopic methods (NMR and MS) and by comparison with the spectroscopic data reported in the literature. All compounds except 3 showed weak cytotoxicity with IC50 values ranging from 35.

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Hemoglobin (Hb) is the major protein component of erythrocytes in animals with red blood, but it can serve additional functions beyond the transport of oxygen. In this study, we identified polymorphism in the blood clam Tegillarca granosa Hb (Tg-Hb) genes and investigated the association of this polymorphism with resistance/susceptibility to Vibrio parahaemolyticus. Analysis of the 540 sequences revealed 28 SNPs in the coding region of three Tg-Hbs, corresponding to about one SNP per 48 bp.

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LPS-induced TNFα factor (LITAF) is a transcription factor mediating TNF-α expression under LPS stimulation, and playing important roles in immune responses. In the present study, partial cDNA sequence of a LITAF (designated CcLITAF) gene was cloned and identified from snail Cipangopaludina chinensis. It contains an open reading frame of 348 nucleotides encoding a predicted protein of 115 amino acids, with a conserved LITAF domain at C-terminal, and shares a similarity ranging from 34% to 96% with other LITAF from oyster to mammals.

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Aim: To test the effect of Ginkgo biloba leaf extract on electroencephalography (EEG) during cerebral ischemia and reperfusion.

Methods: Based on the quantitative analysis of EEG using the fast Fourier transform (FFT), the effect of Ginkgo biloba extract (GbE) on rat EEG was surveyed in the model of middle cerebral artery (MCA) occlusion and global cerebral ischemia.

Results: In the global cerebral ischemia, GbE 8 and 16 mg/kg could accelerate the recovery of EEG after reperfusion, and GbE 4 mg/kg had the same effect but much weaker.

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