Qianjin Wenwu decoction suppresses renal interstitial fibrosis by enhancing the degradation of extracellular matrix in mice with unilateral ureteral obstruction / 中国天然药物

Diabetic kidney disease (DKD) is the most common complication of diabetes mellitus (DM). Qianjin Wenwu decoction (QWD), a well-known traditional Korean medicine, has been used for the treatment of DKD, with satisfactory therapeutic effects. This study was designed to investigate the active components and mechanisms of action of QWD in the treatment of DKD. The results demonstrated that a total of 13 active components in five types were found in QWD, including flavonoids, flavonoid glycosides, phenylpropionic acids, saponins, coumarins, and lignins. Two key proteins, TGF-β1 and TIMP-1, were identified as the target proteins through molecular docking. Furthermore, QWD significantly suppressed Scr and BUN levels which increased after unilateral ureteral obstruction (UUO). Hematoxylin & eosin (H&E) and Masson staining results demonstrated that QWD significantly alleviated renal interstitial fibrosis in UUO mice. We also found that QWD promoted ECM degradation by regulating MMP-9/TIMP-1 homeostasis to improve renal tubulointerstitial fibrosis and interfere with the expression and activity of TGF- β1 in DKD treatment. These findings explain the underlying mechanism of QWD for the treatment of DKD, and also provide methodological reference for investigating the mechanism of traditional medicine in the treatment of DKD.

Spatially resolved expression landscape and gene-regulatory network of human gastric corpus epithelium

Molecular knowledge of human gastric corpus epithelium remains incomplete. Here, by integrated analyses using single-cell RNA sequencing (scRNA-seq), spatial transcriptomics, and single-cell assay for transposase accessible chromatin sequencing (scATAC-seq) techniques, we uncovered the spatially resolved expression landscape and gene-regulatory network of human gastric corpus epithelium. Specifically, we identified a stem/progenitor cell population in the isthmus of human gastric corpus, where EGF and WNT signaling pathways were activated. Meanwhile, LGR4, but not LGR5, was responsible for the activation of WNT signaling pathway. Importantly, FABP5 and NME1 were identified and validated as crucial for both normal gastric stem/progenitor cells and gastric cancer cells. Finally, we explored the epigenetic regulation of critical genes for gastric corpus epithelium at chromatin state level, and identified several important cell-type-specific transcription factors. In summary, our work provides novel insights to systematically understand the cellular diversity and homeostasis of human gastric corpus epithelium in vivo.

Progress and Challenges for Live-cell Imaging of Genomic Loci Using CRISPR-based Platforms / 基因组蛋白质组与生物信息学报·英文版

Chromatin conformation, localization, and dynamics are crucial regulators of cellular behaviors. Although fluorescence in situ hybridization-based techniques have been widely utilized for investigating chromatin architectures in healthy and diseased states, the requirement for cell fixation precludes the comprehensive dynamic analysis necessary to fully understand chromatin activities. This has spurred the development and application of a variety of imaging methodologies for visualizing single chromosomal loci in the native cellular context. In this review, we describe currently-available approaches for imaging single genomic loci in cells, with special focus on clustered regularly interspaced short palindromic repeats (CRISPR)-based imaging approaches. In addition, we discuss some of the challenges that limit the application of CRISPR-based genomic imaging approaches, and potential solutions to address these challenges. We anticipate that, with continued refinement of CRISPR-based imaging techniques, significant understanding can be gained to help decipher chromatin activities and their relevance to cellular physiology and pathogenesis.

Observation on the effect of Xuebijing injection in treatment of acute paraquat poisoning / 中国基层医药

Objective To observe the effect of Xuebijing injection on organs injury in patients with acute paraquat poisoning.Methods Thirty patients with paraquat poisoning were randomly divided into two groups.The improvement of liver and kidney function,SaO2,rate of death were observed and compared between the two groups.Results The ABG,SaO2,GGT and Crea were all improved significantly in the treatment group than control group.At last,two patients gave up their treatment,nine cases were cured,four cases died in treatment group.One patient gave up treatment,four cases were cured,ten cases died in control group.The total effective rate of the treatment group and control group was 60.0％,26.7％,the difference was significant(x2 =4.75,P＜0.05).Conclusion Xuebijing injection has very good clinical effect in multiple organ failure of paraquat poisoning,it is worthy of clinic application.

Treating observation of pulmonary heart disease with heart failure by Die-Mailing / 中国基层医药

Objective To observe the clinical curative effect of Die-Mailing in treating cases of pulmonary heart disease with heart failure.Methods 92 cases were divided at random into 2 groups:conventional therapy group(46 cases) were treated with Die-Mailing injection on the base of routine therapy.Control group(46 cases) were treated with only routine therapy.Results Effect rate of conventional group was 93.5%(43/46),while the effect rate of control group was 71.7%(33/46).Conclusion The treatment of the Die-Mailing injection based on the conventional treatment can be effective to control pulmonary heart disease and heart failure.