Objective:To investigate the effects of matrix metalloproteinase 10(MMP10)on the proliferation,migration,invasion,and lymph node metastasis of oral squamous cell carcinoma(OSCC)cells,and to explore the underlying mechanisms.Methods:Gene expression profile data and survival data of head and neck squamous cell carcinoma(HNSCC)tissues and adjacent non-cancerous tissues were downloaded from The Cancer Genome Atlas(TCGA).Protein expression profile data of HNSCC tissues and adjacent non-cancerous tissues were downloaded from the Clinical Proteomic Tumor Analysis Consortium(CPTAC)database,and select the data of OSCC from HNSCC.The data from public database were used to analyze the differences in MMP10 expression at the mRNA and protein level between HNSCC/OSCC tissues and adjacent non-cancerous tissues,and to analyze the impact of MMP10 expression level on the survival rate of HNSCC patients,as well as the impact of human papillomavirus(HPV)on MMP10 gene expression in HNSCC patients.MMP10 expression level in 52 pairs of OSCC tissue samples and adjacent non-cancerous tissue samples(from the First Affiliated Hospital of Fujian Medical University)was measured by real-time quantitative PCR.After silencing MMP10 expression using siRNA(siMMP10-1291 and siMMP10-1336),the effect of MMP10 on the proliferation ability of OSCC cells was detected by CCK-8 assay and colony formation assay.The effects of MMP10 on the migration and invasion abilities of OSCC cells was assessed by wound-healing assay and transwell assay,respectively.To verify the effect of MMP10 knocking down on lymph node metastasis of OSCC cells in vivo,we constructed a nude mouse tongue cancer orthotopic model by shRNA(shMMP10-1291 and shMMP10-1336).Differential expression genes associated with MMP10 were screened from the gene expression profile data of OSCC patients in the TCGA database,and pathway enrichment analysis was performed using the GSEA software to further analyze the correlation between MMP10 and genes from the significantly enriched pathway.Results:Compared with adjacent non-cancerous tissues,the expression level of MMP10 in HNSCC and OSCC tissues was significantly increased(P<0.000 1),and HNSCC patients with high MMP10 expression had a lower survival rate(HR=1.32,P=0.04).HNSCC patients in the HPV-group had higher MMP10 gene expression levels(P<0.000 1),but their survival rate was significantly lower than that of HNSCC patients in the HPV+group(HR=0.48,P=0.004).Downregulating MMP10 expression could inhibit the migration,invasion and lymph node metastasis in vivo of OSCC cells.In OSCC patients,differentially expressed genes associated with MMP10 were significantly enriched in the Wnt signaling pathway(NES=1.505,P=0.029),and multiple genes in the Wnt signaling pathway,including WNT3,WNT3A,WNT5A,and WNT5B,were positively correlated with the expression level of MMP10.Conclusion:MMP10 promotes the invasion,metastasis and lymph node metastasis in vivo of OSCC cells by regulating the Wnt signaling pathway.

Objective:To investigate the effects of matrix metalloproteinase 10(MMP10)on the proliferation,migration,invasion,and lymph node metastasis of oral squamous cell carcinoma(OSCC)cells,and to explore the underlying mechanisms.Methods:Gene expression profile data and survival data of head and neck squamous cell carcinoma(HNSCC)tissues and adjacent non-cancerous tissues were downloaded from The Cancer Genome Atlas(TCGA).Protein expression profile data of HNSCC tissues and adjacent non-cancerous tissues were downloaded from the Clinical Proteomic Tumor Analysis Consortium(CPTAC)database,and select the data of OSCC from HNSCC.The data from public database were used to analyze the differences in MMP10 expression at the mRNA and protein level between HNSCC/OSCC tissues and adjacent non-cancerous tissues,and to analyze the impact of MMP10 expression level on the survival rate of HNSCC patients,as well as the impact of human papillomavirus(HPV)on MMP10 gene expression in HNSCC patients.MMP10 expression level in 52 pairs of OSCC tissue samples and adjacent non-cancerous tissue samples(from the First Affiliated Hospital of Fujian Medical University)was measured by real-time quantitative PCR.After silencing MMP10 expression using siRNA(siMMP10-1291 and siMMP10-1336),the effect of MMP10 on the proliferation ability of OSCC cells was detected by CCK-8 assay and colony formation assay.The effects of MMP10 on the migration and invasion abilities of OSCC cells was assessed by wound-healing assay and transwell assay,respectively.To verify the effect of MMP10 knocking down on lymph node metastasis of OSCC cells in vivo,we constructed a nude mouse tongue cancer orthotopic model by shRNA(shMMP10-1291 and shMMP10-1336).Differential expression genes associated with MMP10 were screened from the gene expression profile data of OSCC patients in the TCGA database,and pathway enrichment analysis was performed using the GSEA software to further analyze the correlation between MMP10 and genes from the significantly enriched pathway.Results:Compared with adjacent non-cancerous tissues,the expression level of MMP10 in HNSCC and OSCC tissues was significantly increased(P<0.000 1),and HNSCC patients with high MMP10 expression had a lower survival rate(HR=1.32,P=0.04).HNSCC patients in the HPV-group had higher MMP10 gene expression levels(P<0.000 1),but their survival rate was significantly lower than that of HNSCC patients in the HPV+group(HR=0.48,P=0.004).Downregulating MMP10 expression could inhibit the migration,invasion and lymph node metastasis in vivo of OSCC cells.In OSCC patients,differentially expressed genes associated with MMP10 were significantly enriched in the Wnt signaling pathway(NES=1.505,P=0.029),and multiple genes in the Wnt signaling pathway,including WNT3,WNT3A,WNT5A,and WNT5B,were positively correlated with the expression level of MMP10.Conclusion:MMP10 promotes the invasion,metastasis and lymph node metastasis in vivo of OSCC cells by regulating the Wnt signaling pathway.

The fungus Xylaria sp. KYJ-15 was isolated from Illigera celebica. Based on the one strain many compounds (OSMAC) strategy, the strain was fermented on potato and rice solid media, respectively. As a result, two novel steroids, xylarsteroids A (1) and B (2), which are the first examples of C₂₈-steroid with an unusual β- and γ-lactone ring, respectively, along with two new dihydroisocoumarin glycosides, xylarglycosides A (3) and B (4), were identified. Their structures were elucidated by spectroscopic methods, X-ray diffraction and electronic circular dichroism (ECD) experiments. All isolated compounds were evaluated for cytotoxicity, DPPH radical scavenging activity, acetylcholinesterase inhibitory and antimicrobial effect. Compound 1 exhibited potent AChE inhibitory activity with an IC₅₀ value of 2.61 ± 0.05 μmol·L^-1. The β-lactone ring unit of 1 is critical for its AChE inhibitory activity. The finding was further confirmed through exploring the interaction of 1 with AChE by molecular docking. In addition, both compounds 1 and 2 exhibited obvious antibacterial activity against Bacillus subtilis with a minimum inhibitory concentration (MIC) of 2 μg·mL^-1. Compounds 3 and 4 exhibited antibacterial activities against Staphylococcus aureus with MICs of 4 and 2 μg·mL^-1, respectively, which also exhibited DPPH radical scavenging activity comparable to the positive control with IC₅₀ values of 9.2 ± 0.03 and 13.3 ± 0.01 μmol·L^-1, respectively.
Humans ; Acetylcholinesterase ; Molecular Docking Simulation ; Anti-Bacterial Agents ; Glycosides ; Lactones ; Pain

【Objective】 To investigate the clinical efficacy and safety of low-dose rituximab combined with dexamethasone in the treatment of refractory ITP (RITP) in children. 【Methods】 A total of 31 RITP children, admitted to the Hematology Department of Kunming Children′s Hospital from January 2016 to December 2019 and agreed to receive low-dose rituximab (100 mg/ time, once a week, for 4 successive weeks) combined with dexamethasone (0.6 mg/kg, once a day, for 4 successive days) were enrolled and studied. Blood routine was monitored every other day during treatment, and adverse drug reactions were recorded. The influence of gender, disease course and age on prognosis was compared by χ² test. 【Results】 1) Among the 31 cases, 11 (35.5%) had platelets >100×10⁹/L after 4 weeks and had no recurrence in 6 months; 9 (29%) had platelets >30×10⁹/L but <100×10⁹/L and had no recurrence in 6 months; 11 (35.5%) showed no recovery of platelets, which were consistently lower than 30×10⁹/L. 2) Rituximab was used in 4 cases (12.9%), 1 case (3.2%) presented with severe drug-induced rashes; Headache, vomiting and elevated blood pressure occurred in 2 cases (6.4%). 1 case (3.2%) presented with laryngeal edema. 3) There was no difference in the total effective rate among different gender, age and disease course (P >0.05). 【Conclusion】 The total effective rate of low-dose rituximab combined with dexamethasone for children with refractory ITP in 6 months is 64.5%, and the adverse reactions are tolerable, so it can be used as a treatment option for children with refractory ITP.

To explore the potential mechanism of Qinfei Dayuan Granules for the treatment of pneumonia by the network pharmacology, the potential active ingredients and drug targets of Qinfei Dayuan Granules were obtained through the Integrative Pharmacology-based Research Platform of Traditional Chinese Medicine (TCMIP). The "component-target-disease" network and PPI network were constructed by Cytoscape 3.7.2 software, and GO functional enrichment analysis and KEGG pathway enrichment analysis were performed on the TCMIP platform to obtain a multi-dimensional network analysis of the "Chinese medicinal materials-chemical components-key targets-action pathways" and to explore the mechanism of its multi-component multi-target multi-action pathways of Qinfei Dayuan Granules for the treatment of pneumonia. A total of 474 active ingredients and 865 drug targets were identified from Qinfei Dayuan Granules; the key core targets of drugs include NF-κB, TNF-α, MAPK3, IL-1β, PTGS and CASP3, etc.. The results of GO functional enrichment analysis showed that drugs may interfere with inflammation through biological pathways such as immune regulation and apoptosis. KEGG signal pathway enrichment analysis showed that it was mainly related to the diabetic complications AGE-RAGE signaling pathway, IL-17 signaling pathway, T cell receptor signaling pathway and tumor necrosis factor signaling pathway, etc.. Qinfei Dayuan Granules can exert its effect on the treatment of pneumonia through inflammatory response and immune system with multi-ingredient, multi-target and multi-pathway pharmacological characteristics.

Objective:To investigate the effects of arbuscular mycorrhiza（AM） fungi inoculation on the rhizosphere soil of Paris polyphylla var. yunnanensis under field conditions，so as to provide a reference for the standardized cultivation and development of high-quality varieties of P. polyphylla var. yunnanensis. Method:The effects of inoculation with mycorrhizal fungi on the rhizosphere soil structure of P. polyphylla var. yunnanensis were observed through a combination of small-scale field inoculation test and laboratory analysis. Soil indexes were determined by soil agrochemical methods. Result:The treatment groups inoculated with exogenous AM fungi showed a regulatory effect on the infection rate and intensity of AM fungi infection in the root system of P. polyphylla var. yunnanensis. After treatment with AM fungi，the soil pH was basically not affected，and the contents of organic matter，available nitrogen，available phosphorus，and available potassium increased. Moreover，the number of fungi decreased，the number of bacteria and actinomycetes increased，and soil enzyme activities increased. The results of correlation analysis showed that there was a significant positive correlation among the soil physical and chemical indexes，especially the bacterial number and the three types of phosphatases showed extremely significant correlation （r=0.849，0.800，0.804，P<0.01）. Conclusion:The application of the two mixed fungicides could increase the number of microorganisms and enzyme activities in the rhizosphere of P. polyphylla var. yunnanensis， and there was a certain synergy effect among the soil factors. Among the three field trials，the effects in Anshun，Guizhou and Wanzhou，Chongqing were more ideal，which provided a theoretical and practical basis for large-scale promotion of P. polyphylla var. yunnanensis in the field.