1.Incidence and treatment analysis of gastric cancer in Tianjin: a report of 3 122 cases
Xiaona WANG ; Weihua FU ; Yongjie ZHAO ; Tao YANG ; Xiangyang YU ; Junzhong SHI ; Guodong SONG ; Haotian LI ; Shupeng ZHANG ; Hai HUANG ; Jinfang ZHANG ; Jianping BAI ; Jinlin WANG ; Shucheng WANG ; Zhaokui DUAN ; Naihui SUN ; Tong LIU ; Han LIANG
Chinese Journal of Digestive Surgery 2023;22(10):1205-1211
Objective:To investigate the incidence and treatment of gastric cancer in 16 medical centers in Tianjin from 2020 to 2021.Methods:The retrospective and descriptive study was conducted. The clinical data of 3 122 gastric cancer patients who underwent surgery in 16 medical centers, including Tianjin Medical University Cancer Institute & Hospital, et al, in Tianjin from 2020 to 2021 were collected. There were 2 112 males and 1 010 females, aged (64±11)years. Observation indicators: (1) general data of patients; (2) treatment situations; (3) postoperative complications. Measurement data with normal distribution were represented as Mean± SD, and measurement data with skewed distribution were represented as M(range). Count data were descri-bed as absolute numbers or percentages, and comparison between groups was conducted by the chi-square test. Results:(1) General data of patients. From 2020 to 2021, a total of 3 122 gastric cancer patients received surgeries in 16 medical centers in Tianjin, including 2 112 males and 1 010 females. There were 1 443 cases in 2020, including 976 males and 467 females, aged (63±11) years. There were 1 679 cases in 2021, including 1 136 males and 543 females, aged (65±11) years. Of the 3 122 pati-ents, cases in stage Ⅰ, Ⅱ, Ⅲ, Ⅳ were 696, 667, 1 466, 293, accounting for 22.293%(696/3 122), 21.365%(667/3 122), 46.957%(1 466/3 122), 9.385%(293/3 122), respectively. Cases with early gastric cancer, locally advanced gastric cancer, advanced gastric cancer account for 17.265%(539/3 122), 73.350%(2 290/3 122), 9.385%(293/3 122). There were 2 829 patients without distant metastasis and 293 patients with distant metastasis. For the 2 829 patients without distant metas-tasis, cases in stage T1, T2, T3, T4a, T4b accounted for 19.053%(539/2 829), 12.089%(342/2 829), 20.148%(570/2 829), 41.499%(1 174/2 829), 7.211%(204/2 829)respectively, cases in stage N0, N1, N2, N3 account for 37.328%(1 056/2 829), 16.331%(462/2 829), 15.836%(448/2 829), 30.505%(863/2 829). For the 293 advanced gastric cancer patients with distant metastasis, 190 cases had peri-toneal metastasis, 47 cases had lymph node metastasis, 27 cases had ovarian metastasis, 37 cases had liver metastasis, 14 cases had other metastasis (some patients had ≥2 distant metastases). (2) Treatment situations. ① For the 539 with early gastric cancer, cases undergoing endoscopic submu-cosal dissection, laparoscopic surgery, open surgery were 22, 150, 86 in 2020, versus 19, 212, 50 in 2021, showing a significant difference between them ( χ2=19.42, P<0.05). For the 498 patients with early gastric cancer who underwent laparoscopic or open surgery, cases undergoing open surgery including total gastrectomy, distal gastrectomy, proximal gastrectomy were 25, 81, 30, and cases undergoing laparoscopic surgery including total gastrectomy, distal gastrectomy, proximal gastrec-tomy were 18, 309, 35, respectively, showing a significant difference between them ( χ2=40.62, P<0.05). For the 2 290 patients with locally advanced gastric cancer, cases undergoing open surgery and laparoscopic surgery were 446 and 617 in 2020, versus 410 and 817 in 2021, showing a significant difference between them ( χ2=17.75, P<0.05). For the 2 290 patients with locally advanced gastric cancer, cases undergoing open surgery including total gastrectomy, distal gastrectomy, proxi-mal gastrectomy were 336, 377, 143, and cases undergoing laparoscopic surgery including total gastrectomy, distal gastrectomy, proximal gastrectomy were 377, 920, 137, respectively, showing a significant difference between them ( χ2=89.64, P<0.05). Of the 293 patients with advanced gastric cancer, 175 cases underwent surgeries due to hemorrhage, stenosis, perforation, 76 cases under-went surgery after chemotherapy, 42 cases underwent surgery directly. ② For 756 cases of 3 122 pati-ents undergoing total gastrectomy, 357 and 4 cases received open digestive tract reconstruction including Roux-en-Y and other anastomosis, versus 380 and 15 cases with laparoscopic digestive tract reconstruction including Roux-en-Y and other anastomosis, showing a significant difference between them ( χ2=5.57, P<0.05). For 1 687 cases undergoing distal gastrectomy, 84, 160, 158, 55 cases received open digestive tract reconstruction including Billroth Ⅰ anastomosis, Billroth Ⅱ + Braun anastomosis, Roux-en-Y anastomosis, uncut Roux-en-Y anastomosis, versus 154, 489, 417, 170 cases with laparoscopic digestive tract reconstruction including Billroth Ⅰ anastomosis, Billroth Ⅱ + Braun anastomosis, Roux-en-Y anastomosis, uncut Roux-en-Y anastomosis, showing a significant difference between them ( χ2=10.90, P<0.05) . Of the 539 patients with early gastric cancer, 65 cases had lymph node metastasis, in which 18 of 306 stage T1a cases had lymph node metastasis and 47 of 233 stage T1b cases had lymph node metastasis. The number of detected lymph nodes for the 2 290 patients with advanced gastric cancer was 31±15, including ≥16 for 2 059 cases and ≥30 for 1 276 cases. Of the 3 122 patients, cases with neoadjuvant therapy, complete response and incomplete response was 128, 13 and 115 in 2020, versus 250, 49 and 201 in 2021, showing a significant difference between them ( χ2=5.51, P<0.05). (3) Postoperative complications. Of the 3 122 patients, 746 cases had postoperative complications, with an incidence of 23.895%(746/3 122). There were 62 patients with grade 3 or more complications. Reoperation was conducted in 34 patients. There were 14 cases of postoperative death. The duration of postoperative hospital stay and hospital expense were (11±5)days and (98 114±46 598)yuan for the 3 122 patients, (26±14)days and (122 066±68 317)yuan for cases with complications, (40±21)days and (196 926±12 747)yuan for cases with grade 3 or more complications. Conclusion:Compared with 2020, cases undergoing laparoscopic surgery and distal gastrectomy for gastric cancer in Tianjin increases in 2021, and the digestive tract reconstruction also differs. The number of patients with neoadjuvant chemotherapy and complete response rate for advanced gastric cancer increases.
2.Effect of botulinum toxin type A on flap surgery in animal models: a systematic review and meta-analysis
Shupeng SHI ; Lujing FEI ; Tao LIN ; Qiang WANG ; Hong FANG ; Gang YU ; Liping ZHAO
Chinese Journal of Plastic Surgery 2023;39(5):502-513
Objective:To evaluate the effect of botulinum toxin type A (BTXA) on flap surgery in animal models.Methods:Nine databases (PubMed, Cochrane Library, Ovid, Web of Science, Embase, Scopus, CBM, CNKI, and WANFANG database) were searched for published literature comparing the effects of BTXA (BTXA group) versus saline or no treatment (control group) on flap operation in animal models from January 1979 to March 2022. The literature was screened according to inclusion and exclusion criteria. Indicators included flap survival rate, blood flow and vascular endothelial growth factor (VEGF) expression level after surgery. The subjects were divided into pre-operation injection group and intraoperation injection group according to the intervention timing, and were divided into random flap group and axial flap group according to the type of flaps, and subgroup analysis was conducted respectively. Review Manager (RevMan) 5.3 software and Stata 15.1 software were used for all statistical analysis.Results:A total of 603 animals from 19 studies were included after rigorous inclusion and exclusion screening. Compared with control group, BTXA group revealed a significantly higher flap survival rate [mean difference ( MD)=15.65%, 95% CI: 13.11%-18.19%, Z=12.08, P<0.001], blood flow [standardized mean difference ( SMD)=1.96, 95% CI: 1.39-2.54, Z=6.71, P<0.001] and VEGF expression (at mRNA level: SMD=6.01, 95% CI: 0.89-11.13, Z=2.30, P=0.020; at protein level: SMD=3.44, 95% CI: 2.44-4.43, Z=6.73, P<0.001). Subgroup analysis showed that the flap survival rate of the pre-operation injection group ( MD=21.54%, 95% CI: 16.07%-27.01%, Z=7.71, P<0.001) was significantly higher than that of the intraoperative injection group ( MD=9.40%, 95% CI: 6.79%-12.00%, Z=7.07, P<0.001). The flap survival rate of the random flap group ( MD=20.87%, 95% CI: 16.67%-25.07%, Z=9.73, P<0.001) was significantly higher than that of the axial flap group ( MD=13.11%, 95% CI: 8.91%-17.31%, Z=6.12, P<0.001). Conclusion:BTXA assisted flap surgery may have positive effects on the survival rate, blood flow and VEGF expression in animal models. In addition, injection timing and flap type may also be important factors in the effect of BTXA on flap surgery.
3.Effect of botulinum toxin type A on flap surgery in animal models: a systematic review and meta-analysis
Shupeng SHI ; Lujing FEI ; Tao LIN ; Qiang WANG ; Hong FANG ; Gang YU ; Liping ZHAO
Chinese Journal of Plastic Surgery 2023;39(5):502-513
Objective:To evaluate the effect of botulinum toxin type A (BTXA) on flap surgery in animal models.Methods:Nine databases (PubMed, Cochrane Library, Ovid, Web of Science, Embase, Scopus, CBM, CNKI, and WANFANG database) were searched for published literature comparing the effects of BTXA (BTXA group) versus saline or no treatment (control group) on flap operation in animal models from January 1979 to March 2022. The literature was screened according to inclusion and exclusion criteria. Indicators included flap survival rate, blood flow and vascular endothelial growth factor (VEGF) expression level after surgery. The subjects were divided into pre-operation injection group and intraoperation injection group according to the intervention timing, and were divided into random flap group and axial flap group according to the type of flaps, and subgroup analysis was conducted respectively. Review Manager (RevMan) 5.3 software and Stata 15.1 software were used for all statistical analysis.Results:A total of 603 animals from 19 studies were included after rigorous inclusion and exclusion screening. Compared with control group, BTXA group revealed a significantly higher flap survival rate [mean difference ( MD)=15.65%, 95% CI: 13.11%-18.19%, Z=12.08, P<0.001], blood flow [standardized mean difference ( SMD)=1.96, 95% CI: 1.39-2.54, Z=6.71, P<0.001] and VEGF expression (at mRNA level: SMD=6.01, 95% CI: 0.89-11.13, Z=2.30, P=0.020; at protein level: SMD=3.44, 95% CI: 2.44-4.43, Z=6.73, P<0.001). Subgroup analysis showed that the flap survival rate of the pre-operation injection group ( MD=21.54%, 95% CI: 16.07%-27.01%, Z=7.71, P<0.001) was significantly higher than that of the intraoperative injection group ( MD=9.40%, 95% CI: 6.79%-12.00%, Z=7.07, P<0.001). The flap survival rate of the random flap group ( MD=20.87%, 95% CI: 16.67%-25.07%, Z=9.73, P<0.001) was significantly higher than that of the axial flap group ( MD=13.11%, 95% CI: 8.91%-17.31%, Z=6.12, P<0.001). Conclusion:BTXA assisted flap surgery may have positive effects on the survival rate, blood flow and VEGF expression in animal models. In addition, injection timing and flap type may also be important factors in the effect of BTXA on flap surgery.
4.Integrin alpha 3 expression in glioma and its prognostic value in glioma patients
Xiang ZHOU ; Zhongwei WANG ; Haigang CHANG ; Shupeng ZHAO ; Baozhe JIN
Chinese Journal of Neuromedicine 2022;21(3):232-241
Objective:To investigate the differences of integral alpha 3 (ITGA3) mRNA and protein expressions in gliomas of different grades and different cell lines, and gliomas tissues of different clinical and molecular characteristics, and evaluate their prognostic values in brain glioma patients.Methods:(1) ITGA3 mRNA expression data in the brain gliomas and clinical data of these glioma patients were obtained from The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA). The differences of ITGA3 mRNA expressions in glioma patients with different gender, ages, WHO grading, isocitrate dehydrogenase 1 ( IDH) mutation statuses, and 1p/19q co-deletion statuses were compared. Kaplan-Meier method was used to plot and compare the survival curves of patients with ITGA3 mRNA high expression and ITGA3 mRNA low expression. Receiver operating characteristic (ROC) curve was used to analyze the predictive efficiency of ITGA3 mRNA expression in survival rate of gliomas. Univariate and multivariate Cox regression analyses were used to explore the independent influencing factors for prognoses in glioma patients. The independent influencing factors for prognosis were used to construct nomograms and the calibration diagram was used to verify the reliability of nomograms in predicting the prognoses of these patients. (2) Intracellular localization of ITGA3 and ITGA3 protein expression in low- and high-grade gliomas were determined by on-line database of Human Protein Atlas (HPA). (3) Brain glioma cells U87, U118, U251 and human astrocytes SVG were cultured in vitro, and the ITGA3 mRNA and protein expressions in cells were detected by Western blotting and reverse transcription (RT)-PCR, respectively. Results:(1) In TCGA database, the ITGA3 mRNA expressions in gliomas of WHO grading II, III and IV increased successively, with significant differences (P<0.05). In CGGA database, the ITGA3 mRNA expression in glioma of WHO grading IV was statistically higher than that in glioma of WHO grading II and III ( P<0.05). In TCGA and CGGA databases, the ITGA3 mRNA expressions in glioma patients aged ≤40 years and >40 years, patients with IDH wild-type and IDH mutation, and patients with chromosome 1p/19q deletion and chromosome 1p/19q non-deletion were statistically different ( P<0.05). The survival rate of patients with low ITGA3 mRNA expression was significantly higher than that of patients with high ITGA3 mRNA expression, no matter in low-grade glioma, glioblastoma, or entire glioma samples ( P<0.05). ROC curve showed that, in TCGA database, the area under the curve (AUC) of ITGA3 mRNA in predicting 1, 3, and 5 years survival was 0.791, 0.786, and 0.708 in glioma patients; in CGGA database, the AUC of ITGA3 mRNA in predicting 1, 3, and 5 years survival was 0.661, 0.667, and 0.659. Multivariate Cox regression analysis showed that, in TCGA database, age, WHO grading, IDH mutation, chromosome 1p/19q deletion and ITGA3 mRNA expression ( HR=1.018, 95%CI: 1.006-1.030, P=0.0.003) were independent influencing factors for prognoses of glioma patients ( P<0.05); and in CGGA database, WHO grading, IDH mutation, chromosome 1p/19q deletion, and ITGA3 mRNA expression ( HR=1.445, 95%CI: 1.132-1.844, P=0.003) were independent influencing factors for prognoses of glioma patients ( P<0.05). Nomograms showed that age had the greatest influence in survival, followed by ITGA3 mRNA expression. Calibration plots showed that nomogram was reliable in predicting 1-, 3-, and 5-year survival in glioma patients. (2) Immunofluorescence localization showed that ITGA3 protein mainly aggregated in cell membrane and vesicles. Immunohistochemical staining showed that the ITGA3 protein expression in high-grade glioma tissues was obviously higher than that in low-grade glioma tissues. (3) The results of RT-PCR and Western blotting revealed that the ITGA3 mRNA and protein expressions in glioma cell lines U87, U118 and U251 were significantly higher than those in SVG cells ( P<0.05). Conclusion:The ITGA3 mRNA and protein expression levels are correlated with the malignant degrees of glioma; patients with ITGA3 mRNA low expression tend to have a high overall survival; ITGA3 mRNA expression can be used as an index to evaluate the prognoses of glioma patients.
5. Establishment of a multiplex PCR for rapid identification of Mycobacterium species
Shupeng YIN ; Chenqi YAN ; Zhiguang LIU ; Xiuqin ZHAO ; Xiaoqin LI ; Machao LI ; Haican LIU ; Yongliang LOU ; Kanglin WAN
Chinese Journal of Microbiology and Immunology 2019;39(10):771-777
Objective:
To establish and evaluate a multiplex PCR method for rapid identification of
6.High resolution melting analysis for detection of ALDH 2 and ADH1B gene polymorphisms
Shupeng JIANG ; Yongqing TONG ; Rui ZHAO ; Yan LI
International Journal of Laboratory Medicine 2018;39(13):1537-1539
Objective To establish the system of high resolution melting for detection of aldehyde dehydro-genase 2(ALDH2) and alcohol dehydrogenase-1B (ADH1B) gene polymorphisms .Methods The short prim-ers were designed for ALDH2 and ADH1B gene .Different PCR products were analyzed using Eva Green dyes after amplification ,which were confirmed by Sanger sequencing .Results The genotypes of ALDH2 rs671 and ADH1B rs1229984 were successfully detected in the same procedure by HRM within 90min ,and the results were consistent with Sanger sequencing .Conclusion The assay of HRM is simple ,rapid ,cost-effective ,and re-liable for the detection of ALDH2 and ADH1B polymorphism and it is worthy to be popularized .
7.Effects of ING5 gene on the malignant phenotype of breast cancer Bcap-37 cells
Yang SONG ; Yizeng WAN ; Shupeng ZHAO ; Fengjie QI ; Lei FANG ; Jicheng WU ; Shuai SHI ; Huachuan ZHENG
Medical Journal of Chinese People's Liberation Army 2017;42(1):12-16
Objective To investigate the effects of inhibitor of growth 5 (ING5) gene on the proliferation, apoptosis, migration and cell cycle of human breast cancer Bcap-37 cells.Methods The eukaryotic ING5-expressing plasmid and GFP-empty plasmid were steadily transfected in Bcap-37 cells, the expression of green fluorescent protein was measured with fluorescence microscopy, and the high expression of ING5 was measured by real time-PCR. Bcap-37-ING5 cells served as the experimental group, Bcap-37-GFP cells as the mock group and Bcap-37 as the control group. The effects of ING5 on the proliferation were detected by MTT, the cell cycle and apoptosis were detected by Flow cytometry, and the cell migration was detected by cell wound scratch assay and Transwell experiment.Results Bcap-37 cell lines steadily expressing ING5 protein with GFP-tag were acquired by stable transfection. ING5 over-expression inhibited the proliferation and led to G2 arrest of Bcap-37 cells, increased cells apoptosis and decreased the cell migration ability (P<0.05).Conclusion ING5 over-expression may have reverse effect for malignant phenotype of breast cancer cells, and may be employed to indicate the biomarker of prognosis of breast cancer patients and regarded as a target of gene therapy.
8.Micro RNA -433 inhibits proliferation and invasion of glioma cells by targeting histone deacetylase 6
Xiangsheng LI ; Yanjuan MA ; Lei HUI ; Ruihua LIU ; Shupeng ZHAO ; Baozhe JIN
Chinese Journal of Neuromedicine 2017;16(12):1247-1254
Objective To detect the expression of micro RNA (miR)-433 and histone deacetylase 6 (HDAC6) in glioma tissues and investigate the effect of miR-433 on cell proliferation and invasion of human glioma cell line U251. Methods (1) Forty-two glioma samples, collected from patients accepted surgical resection and conformed by pathology in our hospital from January 2010 to December 2014, and 13 healthy brain tissues, collected from patients accepted surgery for craniocerebral trauma at the same time period, were used in our study; reverse transcription (RT)-PCR was used to detect the mRNA expression levels of miRNA-433 and HDAC6 in the glioma samples and brain tissues. (2) Human glioma cell line was routinely cultured and divided into blank control group, nonsense sequence control group and miRNA-433 mimics group;cells in the later two groups were transfected with nonsense sequences or miRNA-433 mimics, and cells in the blank control group did not give any treatment;the mRNA expression levels of miRNA-433, P21 and HDA C6 in these 3 groups were detected by RT-PCR;the cellular viability was measured by CCK-8 assay;flow cytometry was used to monitor the changes of cell cycle and apoptosis; cell invasion was evaluated by Transwell assay; HDAC6 protein expression was detected by Western blotting. (3) Wide-type (WT)HDAC63'-UTR and mutant type (MUT)HDAC63'-UTR luciferase report vectors were established; miR-433 mimics+WT HDAC63′-UTR and nonsense sequences+WT HDAC63'-UTR were transfected into the U251 cells, and dual-luciferase experiment was used to detect the fluorescence intensity of the cells; miR-433 mimics+MUT HDAC63'-UTR and nonsense sequences+MUT HDAC63'-UTR were transfected into the U251 cells, and dual-luciferase experiment was used to detect the fluorescence intensity of the cells. (4) U251 cells were divided into nonsense sequence control group, HDAC6 expression plasmids group and HDAC6 siRNA group, and nonsense sequences, HDAC6 expression plasmids or HDAC6 siRNA were transfected respectively; RT-PCR was used to detect the P21 and HDAC6 mRNA expressions and miRNA-433 expression; U251 cells were divided into miR-433 mimics group and miR-433 mimics+HDAC6 expression plasmids group, and miR-433 mimics or miR-433 mimics+HDAC6 expression plasmids were transfected, respectively, and one-5 d after that, CCK-8 was used to detect the cellular viability. Results (1) The miRNA-433 expressions gradually increased and HDA C6 mRNA expressions gradually decreased in the high-grade gliomas, low-grade gliomas and normal brain tissues, and significant differences were noted among each two groups (P<0.05);the miRNA-433 expression was negatively correlated with HDA C6 mRNA expression in the glioma tissues (r=0.829, P=0.000). (2) As compared with blank control group and nonsense sequence control group, miRNA-433 mimics group had significantly higher miRNA-433 and P21 mRNA expressions, cell percentage at G0/G1 stage, and apoptotic rate (P<0.05), and had statistically lower HDAC6 mRNA expression, cellular viability on 2-5 d of culture, number of transmembrane cells and HDAC6 protein expression (P<0.05). (3) The luciferase activity in cells from miR-433 mimics+WT HDAC63'-UTR group was significantly lower as compared with that in the nonsense sequences+WT HDAC63'-UTR group (P<0.05);the luciferase activity in cells from miR-433 mimics+MUT HDAC63'-UTR group and nonsense sequences+MUT HDAC63'-UTR group showed no significant differences (P>0.05). (4) The HDA C6 mRNA expressions were gradually increased, and P21 mRNA expressions were gradually decreased in the HDAC6 siRNA group, nonsense sequence control group, and HDAC6 expression plasmids group, with significant differences (P<0.05);on 2-5 d of culture, the cellular viability in the miR-433 mimics+HDAC6 expression plasmids group was significantly higher than that in the miR-433 mimics group (P<0.05). Conclusions The miRNA-433 expression level is low in human glioma tissues;miRNA-433 over-expression may inhibit the cell activity and promote cell apoptosis of glioma cell line U251 in vitro via inhibiting the HDAC6 expression.
9.Preparation and Tumor Inhibition Effect of Transferrin Modified Paclitaxel-loaded Liposome
Cailing JIN ; Shupeng ZHAO ; Min ZHANG ; Ying WANG ; Xiaoge KOU ; Ping LU
China Pharmacy 2016;27(1):44-47
OBJECTIVE:To prepare transferrin modified paclitaxel-loaded liposome(TF-PTX-LP),and to study the tumor in-hibition effect. METHODS:TF-PTX-LP was prepared by thin-film method,and morphology of TF-PTX-LP was observed. Qualita-tive and quantitative investigation were used to value the uptake efficiency of TF-LP and LP by HepG2 cells. The proliferation inhi-bition rate of HepG2 cells was investigated after treated with PTX,PTX-LP and TF-PTX-LP for 24,48 and 72 h. Tumor spheres were prepared by using HepG2 cells. Effects of normal saline,PTX,PTX-LP and TF-PTX-LP on the volume of tumor spheres were investigated after 0,1,2,4,5,6 and 7 d treatment. HepG2 tumor-bearing nude mice model was induced. Inhibitory effects of normal saline,PTX,PTX-LP and TF-PTX-LP(8.5 mg/kg by PTX)on transplantable tumor of tumor-bearing nude mice were in-vestigated. RESULTS:TF-PTX-LP showed uniform spherical shape,with particle size of 100-120 nm. The fluorescence intensity of HepG2 cells treated with TF-LP was stronger than that treated with LP(P<0.01). Compared with PTX and PTX-LP,TF-PTX-LP showed higher proliferation inhibition rate(P<0.01). Compared with normal saline,PTX and PTX-LP,tumor spheres were small-er in volume after treated with TF-PTX-LP,and inhibition rate of tumor was higher in tumor-bearing nude mice;there were statisti-cal significance after treated for 6,7 d(P<0.01). The proliferation inhibition rate and tumor spheres volume changed in time-de-pendent manner. CONCLUSIONS:TF-PTX-LP which owns good tumor inhibition effect is prepared successfully.
10.Effect of Dishevelled 2 on apoptosis in diffuse large B-cell lymphoma cell line OCI-Ly10
Mei CHEN ; Jun GU ; Xingzhen LIU ; Shupeng LIU ; Dongbao ZHAO
Journal of Leukemia & Lymphoma 2016;25(12):724-727,732
Objective To investigate the effects of Dishevelled (DVL) on apoptosis of diffuse large B-cell lymphoma (DLBCL) cell line OCI-Ly10, and to explore its possible mechanism. Methods Lentivirus plasmid overexpressing DVL2 was constructed, and after virus was packaged, it was transfected into OCI-Ly10 cells. Flow cytometry was used to detect the apoptosis rate of OCI-Ly10 cells with or without the stimulation by TNF-α recombinant protein. Then the gene expression of anti-apoptotic genes, GADD45β and A20, in NF-κB pathway was detected by RT-PCR. Results The virus was sucessfully transfected into OCL-Ly10 cells which overexpressed DVL2. The apoptosis rate of OCL-Ly10 cells overexpressing DVL2 without the stimulation by TNF-α was increased compared with that of the negative control group [(15.46 ±2.37) % vs. (11.72±3.53)%, P=0.03], the A20 mRNA expression level was decreased compared with that of the negative control group [(0.66 ±0.01) vs. 1, P=0.04], and the relative expression level of GADD45β mRNA was not significantly decreased compared with that of the negative control group [(0.79 ±0.15) vs. 1, P=0.642]. The apoptosis rate of DVL2 overexpression OCI-Ly10 cells stimulated by TNF-α was significantly higher than that of the negative control group treated by TNF-α [(22.78±4.56)%vs. (12.79±2.89)%, P=0.007]. The gene expression of A20 and GADD45β in DVL2 overexpression cells stimulated by TNF-α was significantly increased, however, the magnitude of increase in DVL2 overexpression cells was less than that in the negative control group treated by TNF-α [A20: (3.75 ±0.14) times vs. (6.89 ±0.10) times, P=0.008; GADD45β:(4.750±0.21) times vs. (6.14±0.08) times, P=0.03]. Conclusion DVL can promote the apoptosis of OCI-Ly10 cells, and its mechanism may be related with anti-apoptotic genes that inhibits its downstream via NF-κB pathway.

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