Immunomodulatory effect of adriamycin in mouse 4T1 model of breast cancer / 生物工程学报

To explore the immunomodulatory effect of adriamycin on 4T1 breast cancer. We used a tandem mass tag-based quantitative proteomic method to detect differential proteins in breast cancer tissues, and multiple bioinformatics databases to analyze the differentially expressed proteins in the proteome. Also, we used enzyme-linked immunosorbent assay to detect the effects of adriamycin on helper T cells 1 and 2 in breast cancer tissues, and flow cytometry to detect CD4+ T cells, CD8+ T cells and regulatory T cells. We discovered the immunomodulatory targets of adriamycin in differential proteins. In total 170 differential proteins were significantly up-regulated, whereas 58 were markedly down-regulated. In addition, 73 proteins were involved in immune regulation. Kyoto encyclopedia of genes and genomes enriched important protein pathways related to cytokines and factor receptors, interleukin 17 pathway and cancer transcriptional regulatory pathways. These pathways and important differential proteins related to immunomodulatory functions were ultimately regulated by adriamycin on CD4+ T cells, CD8+ T cells and regulatory T cells, thereby affecting the prognosis of breast cancer. Moreover, adriamycin significantly increased interleukin 2, CD4+ T and CD8+ T (P<0.01) and markedly reduced regulatory T cells (P<0.05). The function of adriamycin against triple-negative breast cancer was closely related to the immunoregulation process of the differential proteins Ighm, Igkc, S100A8, S100A9 and Tmsb4x. Adriamycin could regulate the content of helper T cells 1 cytokines, CD4+ T and CD8+ T lymphocytes in breast cancer and reduce the number of regulatory T cells to produce immunomodulatory effects.

Luteolin reverses OPCML methylation to inhibit proliferation of breast cancer MDA-MB-231 cells / 南方医科大学学报

OBJECTIVE@#To observe the effect of luteolin on the proliferation and expression of OPCML in breast cancer cell line MDA-MB-231.@*METHODS@#Cultured MDA-MB-231 cells were treated with luteolin at the concentrations of 5, 10 and 20 μmol/L for 24 or 48 h. MTT assay was used to detect cell proliferation and flow cytometry was used to detect the cell apoptosis. The expressions of OPCML mRNA and protein were detected using real-time quantitative PCR and Western blotting, respectively. OPCML gene methylation in the promoter region was detected using methylation-specific PCR (MSP), and the activity of methylase in the cells was analyzed.@*RESULTS@#MTT assay showed that treatment with luteolin at 5, 10 and 20 μmol/L for 24 h concentration-dependently decreased the viability of MDA-MB-231 cells ( < 0.05). Flow cytometry also showed that luteolin at different concentrations could induce apoptosis of MDA-MB-231 cells ( < 0.05). Luteolin dose-dependently induced the expression of OPCML mRNA and protein in MDA-MB-231 cells ( < 0.05), down-regulated the methylation status in the promoter region of OPCML gene, up-regulated the level of non-methylated OPCML, and reduced the activity of methylase in the cells ( < 0.05).@*CONCLUSIONS@#Luteolin inhibits the proliferation of MDA-MB-231 breast cancer cells probably by upregulating OPCML expression and its demethylation.

Analysis of safety of minimally invasive embedding / 中国针灸

The technique of minimally invasive embedding simplifies the clinical manipulation of embeddingtherapy and relieves painful patients. The safety of minimally invasive embedding is analyzed in terms of manipula-tion apparatuses, embedding materials, operating techniques and possible adverse reactions, etc. It is expected thatthe evidence of popularizing minimally invasive embedding should be provided.

MRI Features in Children with Cerebral Palsy Induced by Chronic Kernicterus / 中国康复理论与实践

@#Objective To study the characteristic findings on magnetic resonance imaging (MRI) in children with cerebral palsy (CP) induced by chronic kernicterus.Methods The MR imagings in 13 CP cases induced by chronic kernicterus were retrospectively studied, which were compared with 6 healthy and age-matched controls. 13 cases were finally diagnosed as dyskinetic cerebral palsy (athetoid subtype).Results In 13 cases, all showed symmetric high signals in the the globus pallidus on T2-weighted imaging. There were not apparent abnormality on T1-weighted imaging.Conclusion The bilateral high intensity signals in the globus pallidus on T2-weighted imaging are the characteristic findings on MRI in CP children induced by chronic kernicterus. Paying attention to the globus pallidus on MRI may be useful in determining the type of cerebral palsy.