IgG Fc binding protein (FCGBP) as a prognostic marker of low-grade glioma and its correlation analysis with immune infiltration / 细胞与分子免疫学杂志

Objective To identify the possibility of IgG Fc binding protein (FCGBP) acting as a prognostic marker of low-grade glioma (LGG) and its correlation with immune infiltration. Methods The expression of FCGBP was analyzed in pan-cancer using The Cancer Genome Atlas (TCGA), Genotypic tissue expression (GTEX), and China Glioma Genome Atlas (CGGA) database. Then, GSE15824 and GSE68848 datasets were selected for further verification. And gene expression Profile Interaction analysis (GEPIA) database and R language were used to analyze the relationship between FCGBP and survival prognosis. Metascape and GSEA were used for functional annotation and enrichment analysis. Finally, the expression of FCGBP gene in LGG immune microenvironment and its correlation with immune cells were analyzed by TIMER database. Results FCGBP was highly expressed in LGG tissues, indicating poor prognosis of LGG patients. Receiver operating characteristic (ROC) curve analysis and COX analysis showed that FCGBP was an independent risk factor for the prognosis of LGG. Moreover, Gene Ontology (GO) demonstrated that FCGBP was involved in cell metabolism, localization, positive, and negative regulation of biological processes, as well as biological adhesion, response to viral and microbial stimulation, and inflammation. GSEA pathway enrichment analysis showed that FCGBP was significantly correlated with Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway, Toll-like receptor (TLR) pathway, chemokine pathway, and P53 pathway. In addition, FCGBP expression was positively correlated with the expression of most immune cells in the immune microenvironment of LGG. Conclusion The high expression of FCGBP in LGG is a risk factor for survival and prognosis, and it is positively correlated with the expression of immune cells.

Novel T cells with improved in vivo anti-tumor activity generated by RNA electroporation

The generation of T cells with maximal anti-tumor activities will significantly impact the field of T-cell-based adoptive immunotherapy. In this report, we found that OKT3/IL-2-stimulated T cells were phenotypically more heterogeneous, with enhanced anti-tumor activity in vitro and when locally administered in a solid tumor mouse model. To further improve the OKT3/IL-2-based T cell manufacturing procedure, we developed a novel T cell stimulation and expansion method in which peripheral blood mononuclear cells were electroporated with mRNA encoding a chimeric membrane protein consisting of a single-chain variable fragment against CD3 and the intracellular domains of CD28 and 4-1BB (OKT3-28BB). The expanded T cells were phenotypically and functionally similar to T cells expanded by OKT3/IL-2. Moreover, co-electroporation of CD86 and 4-1BBL could further change the phenotype and enhance the in vivo anti-tumor activity. Although T cells expanded by the co-electroporation of OKT3-28BB with CD86 and 4-1BBL showed an increased central memory phenotype, the T cells still maintained tumor lytic activities as potent as those of OKT3/IL-2 or OKT3-28BB-stimulated T cells. In different tumor mouse models, T cells expanded by OKT3-28BB RNA electroporation showed anti-tumor activities superior to those of OKT3/IL-2 T cells. Hence, T cells with both a less differentiated phenotype and potent tumor killing ability can be generated by RNA electroporation, and this T cell manufacturing procedure can be further optimized by simply co-delivering other splices of RNA, thus providing a simple and cost-effective method for generating high-quality T cells for adoptive immunotherapy.

Determination of benzylacetone in the rhododendron by HPLC / 国际中医中药杂志

Objective To establish a HPLC method for determination of benzylacetone in the rhododendron.Methods The HPLC analysis was carried out on Luna C18(250 mm×4.6 mm,5 μm) at 30℃temperature.The mobile phase was acetonitrile-water (64 ∶ 36),the flow rate was 1 ml/min,and the detection wavelength was 220 nm.Results The linear range of benzylacetone was 17.08～170.8 μg/ml (R=0.9998),the average recovery of this method was 99.81％,and the RSD was 1.46％.Conclusion The method is convenient,quickly and accurate,can be used for the quality control of rhododendron oil and their preparations.

Effects of the serum of rats administered rutin on the proliferation, differentiation and maturation of rat calvarial osteoblasts in vitro / 国际中医中药杂志

Objective It was studied that the effects of the serum of rats administered rutin on the proliferation, differentiation and maturation of rat calvarial osteoblasts in Vitro. Methods Osteoblasts were obtained from the newborn calvaria of Wistar rats younger than 24 hrs. After the bone pieces were digested with collagenase-trypsin, osteoblasts were released and were fed with α-MEM containing 10% fetal bovine serum. 12 adult Wistar rats were given rutin intragastrically at 25 mg/100 g body weight and their serum was obtained after 1hour. The control serum was obtained by giving equal volume of physiological saline. The serums were supplemented into the culture media of rat calvarial osteoblasts by 2.5%, 5% and 10% respectively. The proliferation of ROB was analyzed by MTT reduction assay. The osteogenic differentiation and maturation were assayed by measuring alkaline phosphatase activity(ALP)and numbering the mineralized bone nodules. Results The value of A570 in 2.5% and 5% SR group were Significantly [(0.678±0.242)%、(0.796±0.155)%]higher than those of the control. 10% SR was toxic to ROB. 5% SR was stronger (63.35±5.20)μg/μl than 2.5% SR in increasing ALP activity and the number of mineralized bone nodules which were significantly higher in SR group than in the control. Conclusion The metabolites of rutin after oral administration stimulate the proliferation and osteogenic differentiation of osteoblasts. Because so far, the vast majority of the Chinese herbal medicine containing Rutin are oral. The metabolites of rutin after oral administration are likely to be the effective in anti-osteoporosis. However, the role of specific forms and modalities have yet to be studied in depth.

Effect of RhoA gene silencing on proliferation and migration of HepG2 cells / 中华消化外科杂志

Objective To construct a RhoA-siRNA expression vector and determine its role on the malig-nant behavior of HepG2 cells.Methods A RhoA-siRNA DNA fragment was synthesized and cloned into the expression vector of pGenesil-1.The constructed Rhon-siRNA DNA plasmid was stably transfected into HerG2 cells by lipofectamine,and then HepG2 cells were divided into the HepG2/RhoA-siRNA group (HepG2 cells were transfected with pGenesil-1-RhoA-siRNA),HepG2/control group(HepG2 cells were transfected with control plasmid) and HepG2 group (without plasmid transfection).The inbibitory effect of RhoA-siRNA on RhoA protein expression was shown by Western blot.The proliferation,migration,growth potentiality and cell cycle of transfected HepG2 cells were evaluated by MTT assay,wounded healing,the plate cloning formation test and flow cytometry,respectively.All data were analyzed by one-way analysis of variance (ANOVA) and chi-square test.Results The expression of RhoA protein in the HepG2/RhoA-siRNA group was,significantly decreased compared with that in the other two groups (F=178.19,P<0.05).Scratched cells were healed within 48 hours in the HepG2/control group and HepG2 group,but not in the HepG2/RhoA-siRNA group.The clone formation rates in the HepG2/RhoA-siRNA group,HepG2 group and HepG2/control group were 39%±3%,67%±5%and 70%±6%,respectively,with a significant difference among the three groups(χ2=33.34,38.69,P<0.05).Flow cytometry showed that the number of cells transfected with RhoA-siRNA was highest in the G0/G1 phase and lowest in the S phase(F=70.46,76.57.P<0.05).Conclusion The RhoA-siRNA expression vector can effectively suppress the proliferation and migration of HepG2 cells,which may provide a novel gene therapy for hepatocellular carcinoma.

The effect of HIFU ablation combined with UCA on normal tissue around VX2 liver tumor in rabbits / 中华普通外科杂志

Objective To explore the optimized range of normal tissue ablation around the tumor by HIFU in combination with UCA for VX2 liver tumors in rabbits. Methods In this study,51 rabbit models with implanted fiver VX2 tumors were randomly divided into 3 groups:ablating the tumor only(group A)、ablating the tumor and 2 mm eircumferential normal tissue(group B)、and 4 mm normal tissue around the tumor(group C).After HIFU+UCA treatment,the pathology of the targeting tissues,the level of serum ALT,the metastases in the liver、lungs and abdominal cavity,and the survival time were compared with each other. Results After treatment coagulative necrosis was observed in all the target tissues.Serum ALT level between each two groups were statistically different on d3 and d5(F=12.933、18.37,P＜0.01、＜0.01),and the level of ALT in group C was the hightest.The ALT level in group A was significantly higher than group B or group C on the 14th day(F=17.2,P＜0.01).Metastases in group A was significantly higher than group B or group C,and there were no statistically different between group B and C (P=0.353、0.332、0.380).The survival time both in group B and group C were significantly longer than group A(48±13.6,51±12.1 vs 29±5.4),and there were no statistically difference between group B and C(P＞0.05). Conclusions Tumor eradication can be significantly promoted when 2mm normal liver tissue around the tumor is ablated by HIFU+UCA.

The expression of heat shock protein 70 and its early diagnostic significance in acute allograft rejection of liver-transplanted rats / 中华器官移植杂志

Objective To investigate the expression and the early diagnostic significance of heat shock protein 70 in acute allograft rejection of liver-transplamed rats. Methods The model of rat orthotopic liver transplantation was made by using a modified "two-cuff technique". The rats were randomly divided into 3 groups. For each group, donors and receptors all included 15 rats respectively. The control group: Wistar to Wistar liver transplantation; The untreated group: SD to Wistar liver transplantation, not receiving any immunosuppressant after liver transplantation; The treatment group: SD to Wistar liver transplantation, receiving intramuscular injection of tacrolimus (FKS06, 2mg kg-1. day-1) after operation. Five rats were executed randomly in every group on the post-transplantation day 3, 5 and 7 and the graft samples were obtained for optical microscopic observation. The expression of HSPT0 in grafts was detected by using immunohistochemical method and RT-PCR. The correlation between acute rejection following liver transplantation and the expression of HSP70 in grafted liver was studied. Results There was no acute rejection examined in the control group. The untreated group showed typical allograft rejection and the rejection activity index (RIA) went up gradually after the operation (P<0.01). The treatment group showed no rejection or borderline allograft rejection. The level of HSP70 was increased transiently after operation, then reduced in the control group (P<0.05). The level of HSP70 in the untreated group was higher than in the control groupand gradually increased with the prolongation of time after transplantation (P<0.01). A significant correlation was found between HSP70 and pathological score in the untreated group (P<0.01). The treatment group showed low levels of HSP70 of all the time. Conclusions The expression of HSP70 in grafts is closely related to the occurrence and development of the acute rejection and can be useful for early diagnosis of acute allograft rejection following liver transplantation.

Preparation and Quality Criteria of Ru'an Mixture / 中国药房

OBJECTIVE:To preparation Ru'an mixture,and establish its quality standard and observe its therapeutic efficacy.METHODS:Ru'an mixture was prepared with Radix Bupleuri and Ramulus Cinnamomi and Radix Angelicae Sinensis as raw material.Radix Bupleuri,Radix Paeoniae Alba,and Radix Angelicae Sinensis were identified by TLC and the content of Tanshinol was determined by HPLC.RESULTS:The TLC spots of Radix Bupleuri,Radix Paeoniae Alba,and Radix Angelicae Sinensis were all clear.The linear range of Tanshinol was 0.203～2.030?g(r=0.999 8).The total effect rate in Ru' CONCLUSION:Ru'an mixture is reasonable in preparation technique,controllable in quality.

Comparison of the Efficacy for Diabetic Mice Xenotransplanted with Two Types of Microencapsulated Rat Islets / 中国康复理论与实践

@#ObjectiveTo observe and compare the efficacy of two types of microencapsulated rat islets xenotransplanted into diabetic mice. MethodsThe mice diabetic model made with injecting 3% Streptozotosin through tail vein. Four groups were assigned: control group, naked islet transplantation group, alginate-BaCl2 microencapsulated islet transplantation group, agarose-PSSa microencapsulated islet transplantation group.300 islets were transplanted under the renal envelope of each diabetic mice respectively. ResultsThere were no significant difference in mean level of the blood glucose before transplantation among four groups. One week after transplantation, the respective mean level of the blood glucose in four groups were (7.26±1.56) mmol/L in alginate-BaCl2 microencapsulated islet transplantation group, (7.14±1.04) mmol/L in agarose-PSSa microencapsulated islet transplantation group, (7.42±1.52) mmol/L in naked islet transplantation group and (22.54±1.24) mmol/L in control. There were significant difference between the two encapsulated islet groups and the other two groups. The survived period of the two encapsulated islet transplantation groups were longer than that of the other two groups. The survived period of the alginate-BaCl2 microencapsulated islet transplantation group was longer than that of the agarose-PSSa microencapsulated islet transplantation group (92 d vs 56 d),the same as the time of keeping nomal blood glucose level (76 d vs 41 d). ConclusionMicroencapsulated rat islets with this two materials can survive in diabetic mice with their biological activity, and the alginate-BaCl2 microcapsules are better than the agarose-PSSa microcapsules.

Survivin antisense oligonucleotide induces apoptosis and sensitizes pancreatic cancer cells to Gemcitabine / 中国普通外科杂志

Objective In this study,we determine whether Survivin antisense oligonucleotide (ASODN) down-regulates the expression of Survivin mRNA,induces apoptosis,and enhances the sensitivity of pancreatic cancer cells to a chemotherapy agent Gemcitabine. Methods Lipofectin was used to encapsulate ASODN in transfection. Viability of pancreatic cell line BxPC-3 cells treated with ASODN was assessed by MTT method,the expressions of Survivin mRNA were detected by RT-PCR;Flow cytometry and electron microscopy were used to demonstrate apoptotic changes in ASODN treated cells. Result Cell viability was inhibited in dose-dependent and time-dependent manner with an IC 50 of 400 nM at the time of 24 h,Survivin mRNA was down-regulated by 3.38 fold compared to control group. The cell apoptotic ratio was 24.93%?2.97%,early apoptotic morphology was demonstrated by electron microscopy. In combination with Gemcitabine,at the time of 48 h and 72 h,cell viability decreased by 2.76 and 4.58 fold compared to when Gemcitabine was used alone. Conclusion Survivin ASODN down-regulates Survivin mRNA ,induces apoptosis,inhibits proliferation and enhances the sensitivity of pancreatic cancer cells to Gemcitabine.

The model of rapid-harvesting donor liver in rat orthotopic liver transplantation / 中国普通外科杂志

Objective To develop a rapid donor liver harvesting method in orthotopic liver transplantation in rats,and to study the stability and the success rate of the model.Methods A total of 200 healthy adult male SD rats were randomly divided into two groups: the experimental group(rapid donor liver harvesting transplant group),and the control group(conventional liver transplant group).The operation time,cold(ischemic) time and warm ischemic time of the donor liver, recipient post-transplation liver function and the success rate of the operation between the 2 grous were cpmpared.Results In the control group,the(operation) time of donor harvesting was(33.8?4.2) min,warm ischemic time and cold ischemic time of donor liver was(3.5?1.2) min and(62.0?4.2) min,with a 80% rate of success.The new method reduced the time for donor surgery to(13.1?2.2)min,and reduced the warm ischemic time and cold(ischemic) time of donor liver to 0 min and(38.0?3.1)min respectively,and with a 94% rate of success(all P

The changes of pulmonary hemodynamics of pulmonary edema induced by oleic acid in rabbits / 中国病理生理杂志

It was an dideal model of respiratory distress syndyomeinduccd in 59 rabbits by Ⅳ oleic acid injection. Pulmonary hemodynamics, cardiac impedance paramcters were measured, microemboli and leukocytcs were abtained directly from the pulmonary microcirculation by use of the retrograde perfusion method. The results showed that pulmonary hemodynamics were changed significantly, but did not correlate with development of pulmonary edema. It was found that basic impedance (Zo) increased, stroke volume (SV), cardiac output (CO) and cardiac index (CI) all decreased (P