ObjectiveTo reveal the potential mechanism of cisplatin resistance in non-small cell lung cancer A549 cells by comparing the expression profiles of wild-type A549 cells and cisplatin-resistant A549 cells (A549/DPP) through whole transcriptome sequencing analysis.MethodsThe cisplatin resistant A549 (A549/DDP) cell line was first established. Then, the whole-transcriptome analysis was conducted both on A549 and A549/DDP cells. Next, the differentially expressed RNAs of lncRNA-seq, circRNA-seq, and miRNA-seq data were identified, respectively, followed by functional enrichment analysis. Finally, a comprehensive analysis based on the whole transcriptome data was performed and the construction of the ceRNA network was carried out.ResultsA total of 4 517 lncRNA, 123 circRNA, and 145 miRNA were differentially expressed in A549/DDP cells compared with the A549 cell line. These different RNAs were significantly enriched in cancer-related pathways. The ceRNA network contained 12 miRNAs, 4 circRNAs, 23 lncRNAs, and 9 mRNA nodes, of which hsa-miR-125a-5p and hsa-miR-125b-5p were important miRNAs based on the topological analysis.ConclusionTumor necrosis factor signaling pathway and p53 signaling pathway are involved in A549/DPP resistance. Hsa-miR-125a-5p and hsa-miR-125b-5p may be potential targets for reversing cisplatin resistance.
Objective To observe the influence of cisplan on the expression of B7-H1 in retinoblastoma (RB) cells，and to investigate its mechanism. Methods Human RB cell line HXO-Rb44 cells were treated by 6 different concentrations of cisplan (0.000, 0.375, 0.750, 1.500, 3.000, 6.000 mu;g/ml), and their B7-H1 mRNA expression was determined by the reversetranscription polymerase chain reaction (RT-PCR) and fluorescence quantitative PCR (FQ-PCR); the B7-H1 protein expression was determined by immunofluorescence and flow cytometry. HXO-Rb44 cells were treated by 1.5 mu;g/ml cisplan for 0, 15, 30, 60, 120 min, then the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) was detected by Western blot.Results The expression of B7-H1 mRNA and protein in the 0.375, 0.750, 1.500, 3.000, 6.000 mu;g/ml group were significantly higher than that of the blank control group (F=395.478，112.03; P=0.000）. Western blot showed that cisplan (1.5 mu;g/ml) could activate ERK1/2 by increasing its phosphorylation in HXO-Rb44 cells. After cisplan treatment, the phosphorylation of ERK1/2 increased gradually and reached its peak at 30 min, and then went down gradually.Conclusion Cisplan can promote the expression of B7-H1 and activate ERK1/2 in RB cells.
Objective Non-small cell lung cancer ( NSCLC) cells are relatively resistant to chemotherapy, and the outcomes are not always satisfactory. This study was designed to explore the relationship between the content of Ku80 protein of human lung cancer cells and their sensitivity to cisplatin.Methods The lung cancer cells isolated frommalignant pleural effusion samples frompatients with primary lung cancer were cultured in vitro. The sensitivity to cisplatin was tested with the method of CCK-8 expressed as half maximal inhibitory concentration ( IC50 ) . The relative content of Ku80 protein was determined by Western blot. The correlation between sensitivity to cisplatin of lung cancer cells and the relative content of Ku80 protein was analyzed. Results The IC50 of NSCLC group was significantly higher than that of SCLCgroup [ ( 4. 40 ±3. 39) mg/L vs. ( 1. 02 ±0. 54) mg/L, P lt; 0. 001] . The relative content of Ku80 protein of NSCLC group was statistically higher than that of SCLC group [ ( 0. 80 ±0. 45) vs. ( 0. 48 ±0. 25) , P lt;0. 05] . The correlation coefficient between content of Ku80 protein and IC50 was 0. 618 ( P lt; 0. 001) .Conclusions The content of Ku80 protein of NSCLC patients is higher than that of SCLC patients. Itmay be one of the mechanisms contributing to chemotherapeutic resistance of NSCLC. There is a negative relationship between Ku80 protein content of cancer cells and their sensitivity to cisplatin suggesting that the content of Ku80 protein may be served as a candidate index for predicting sensitivity of lung cancer cells to cisplatin.
目的:评价国产吉西他滨(泽菲)联合顺铂二线治疗晚期乳腺癌的疗效和不良反应。方法:34例晚期乳腺癌患者采用国产吉西他滨1000mg/m2,静脉滴注30min,第1、8天;顺铂25mg/m2,静脉滴注,第1～3天。21d为一个周期,至少完成两周期后评价疗效。结果:完全缓解2例(588%),部分缓解16例(4706%),总有效率为5294%。中位疾病进展时间为65月,中位生存期为114月;主要不良反应为骨髓抑制和胃肠道反应,所有不良反应在停药后或对症处理后均可恢复正常。结论:国产吉西他滨联合顺铂二线治疗晚期乳腺癌疗效较好,毒副反应可耐受,值得进一步研究。
ObjectiveTo systematically review the efficacy and safety of cisplatin combined with etoposide versus other platinum combined with etoposide in the treatment of small cell lung cancer (SCLC). MethodsWe searched PubMed, The Cochrane Library (Issue 8, 2013), MEDLINE (Ovid), CNKI, VIP and WanFang Data to collect randomized controlled trials (RCTs) concerning the efficacy and safety of cisplatin combined with etoposide (the cisplatin group) versus other platinum combined with etoposide (the control group) for SCLC. The search was up to August 2013. Two reviewers screened literatures according to the inclusion and exclusion criteria, extracted data and assessed the methodological quality of included studies. And then, meta-analysis was performed by using RevMan 5.2 software. ResultsA total of 6 RCTs involving 684 patients were included. The results of meta-analysis showed that there were no significant differences in disease control rate (DCR) (RR=1.03, 95%CI 0.91 to 1.17, P=0.63), overall response rate (ORR) (RR=1.04, 95%CI 0.97 to 1.11, P=0.33), occurrence of leukocytopenia (RR=0.97, 95%CI 0.81 to 1.17, P=0.77), decreased hemoglobin (RR=0.89, 95%CI 0.61 to 1.31, P=0.56) between the cisplatin group and the control group. Occurrence of thrombocytopenia was lower (RR=0.49, 95%CI 0.38 to 0.63, P<0.000 01) while occurrence of nausea and vomiting was higher (RR=1.80, 95%CI 1.40 to 2.31, P<0.000 01) in the cisplatin group. ConclusionCurrent evidence shows that the clinical efficacy of cisplatin combined with etoposide for SCLC is equal to other platinum combined with etoposide, but it has a certain advantage in decreasing the aggregative rate of platelets, while the gastrointesnial reaction patients should avoid using cisplatin combined with etoposide.
【摘要】 目的 采用循证医学的方法评价甘露聚糖肽联合顺铂对比单用顺铂治疗恶性胸腔积液的有效性和安全性。 方法 计算机检索中国生物医学文献数据库、中国期刊全文数据库、中文科技期刊全文数据库、万方数据库，收集甘露聚糖肽联合顺铂对比单用顺铂治疗恶性胸腔积液的随机对照试验，检索时间为各数据库建库至2011年3月。对文献进行质量评价，用RevMan 5.0软件对数据进行Meta分析。 结果 共纳入6项研究，所有文献质量均为C级。共收入388例患者，Meta分析结果显示甘露聚糖肽联合顺铂组与单用顺铂组相比，总有效率前者高于后者，差异有统计学意义（Plt;0.05）；消化道不良反应发生率两组组间差异无统计学意义（P=0.05）；骨髓抑制发生率前者低于后者，差异有统计学意义（Plt;0.05）；Karnofsky评分提高率前者高于后者，差异有统计学意义（Plt;0.05）。 结论 系统评价表明，甘露聚糖肽联合顺铂治疗恶性胸腔积液的疗效优于单用顺铂的方案。【Abstract】 Objective To assess the clinical efficacy and safety of mannatide plus cisplatin treating malignant pleural effusion. Methods Literatures were retrieved from CBM, VIP, CNKI, Wanfang databases by computer. Literatures were enrolled according to inclusion and exclusion criteria, and the quality of studies was evaluated according to the Cochrane Library handbook. The period duration of searching was between the establishment of the databases and March, 2011. Meta-analysis was conducted by RevMan 5.0 software. Results The meta-analysis of 6 included RCT, all ranked C, which involved 388 patients. The Meta-analysis showed that the total effective rate in mannatide plus cisplatin group significantly differed from that in cisplatin group (P＜0.05). There were no significant difference in the adverse reaction of digestive tract between the two intervention groups (P=0.05). The adverse reaction of marrow depression inmannatide plus cisplatin group was much lower than that in cisplatin group (P＜0.05). The increase of KPS in mannatide plus cisplatin group was higher than that in cisplatin group (P＜0.05). Conclusions The analysis indicates mannatide plus cisplatin has a better effect on malignant pleural effusion than single cisplatin. However, the reliability of this review is affected by poor quality of included studies, and large-scale randomized controlled trials of high quality are needed to confirm the conclusions above.
To study the effect of intraperitoneal hyperthermic double distiled water and cis-diamminedichloro-platinum(DDP) perfusion to the peritoneal cancerous ascites,intraperitoneal injection of H22 cancer cells (2×107 tumor cell,each mouse) were performed in LACA mice. Five days after cancer cells injection, intraperitoneal perfusion of simple hypertherrnic (43℃) double distiled water(group Ⅰ) isotonic fluid (group Ⅱ ). DDP (group Ⅲ ), and hypertherrnic double distiles water perfusion combined with DDP (guoup Ⅳ ) were performed .The results showed that cancer cells in the peritoneal cavity of LACA mice were seriously damaged, the production of ascites was markedly inhibited and the survival days of LACA mice were prolonged in all groups . .The intraperitoneal hyperthermic double distilled water perfusion with DDP group showed more effective result as compared with the other groups,Only 1 peritoneal implanted dissemination was found after treatment in this group,Basing on the experimental from September 1991 through September 1993,intraperitoneal hyperthermic double distiled water perfusion with DDP was used to treat 32 advanced gastric cancer patients after radical gastrectomy with satisfactory results.
ObjectiveTo systematically evaluate the efficacy and safety of nedaplatin versus cisplatin combined with fluorouracil in the treatment of esophageal neoplasms.MethodsPubMed, EMbase, Web of Science, The Cochrane Library, CNKI, WanFang, VIP and CBM databases were searched by computer to investigate the randomized controlled studies about the clinical effects of nedaplatin combined with fluorouracil versus cisplatin combined with fluorouracil in the treatment of esophageal neoplasms. The retrieval time was from the establishment of the database to January 2021. And meta-analysis was performed using RevMan 5.4.ResultsA total of 12 randomized controlled studies involving 744 patients were included. The results of meta-analysis showed that the total effective rate of the nedaplatin group was better than that of the cisplatin group (P<0.05). The incidence of nausea, vomiting, diarrhea and renal impairment in the nedaplatin group was lower than that in the cisplatin group (P<0.05), but the incidence of leukopenia and hemoglobin decline was higher than that in the cisplatin group (P<0.05). There was no statistical difference in the incidence of liver injury, or platelet decline between the two groups (P>0.05).ConclusionNedaplatin combined with fluorouracil has more advantages than cisplatin combined with fluorouracil in the treatment of esophageal cancer, the incidence of nausea, vomiting and diarrhea is lower, and the damage to kidney function is also smaller.
Forty-six patients with advanced gastric cancer were investigated. 25 patients were randomized to receive intraperitoneal hyperthermic (43℃) hypotonic perfusion with high dose cis-diamminedichloroplatinum (60-200mg/m2 body surface) and sodium thiosulfate intraveneously (7.5g/m2 body surface). The time of the intraperotineal perfusion was 30 minutes with the total volume of the perfusate of 2500-3000ml. 21 patients were only operated. The sex ,age macro-or microscopic serosal invasion, and histologic type of two groups were similar and comparatible. We found no cancer cell in nine paients with positive intraperitoneal free cancer cell in the treated group. The postoperative 1-year survival rate of patients in the treated group (96.00%) was significantly higher than that of the random control group (48.54%), Ｐ＜0.01. The postoperative 1 1/2year survival rate in the treated group (68.88%) was also higher than that of the control group (40.00%), however, with no significant difference (Ｐ＞0.05). No serious myelosuppression, kindley,liver, and peripheral nerve damage, and other complications were found. The results indicated that this therapy is reasonably safe and could be a prophylactic theapy for the peritoneal recurrence after radical gastrectomy, which should be further investigated.
摘要:目的:探讨鼻咽癌放疗后程同步辅以小剂量顺铂增敏的近期疗效,并与常规治疗和后程加速超分割放射治疗进行比较。方法:选取98例Ⅱ～Ⅳ期鼻咽癌患者,随机分为常规治疗组(简称T1组,32例)、后程加速超分割治疗组(简称T2组,32例)和顺铂加后程加速超分割治疗组(简称T3组,34例),并对治疗效果进行比较。 结果:1组鼻咽部肿瘤消除率为75.0%(24／32),颈部淋巴结消除率为87.5%(28/32);T2组鼻咽部肿瘤消除率为87.5%(28／32),颈部淋巴结消除率为84.4%(27/32);T3组鼻咽部肿瘤消除率为97.1%(33／34),颈部淋巴结消除率为91.2%(31/34)。进行两两比较,均为P＜0.05,有统计学意义,疗效:T3 组＞T2 组＞T1组。治疗副作用有增加(P＞0.05),但无统计学意义。 结论:小剂量顺铂加后程加速超分割治疗鼻咽癌,可以达到较常规治疗更好的近期治疗效果。Abstract: Objective: To study the later therapeutic efficacy of nasopharyngeal carcinoma in late course accelerated fractionation (LCAF) radiotherapy and low dose cisplatin, at same time compare with conventional fractionation and LCAF. Methods: Ninetyeight cases with stage ⅡⅣ of nasopharyngeal carcinoma were randomly assigned to three groups: conventional fractionation (T1), LCAF (T2), LCAF and low dose cisplatin (T3). At the end of treatment, therapeutic efficacy was compared with each other. Results: The survey periods was 3 months. Comlete response rate (CR) for groups T1, T2 and T3 was 75.0% (24／32), 87.5% (28／32) and 97.1% (33／34), respectively; the group treated with LCAF and cisplatin had highest effective later therapeutic efficacy than other groups. Lymph node of neck of group T3 got better control, although its side effects were more serious, but no significant difference was found among three group. Conclusion: Combined treatment of LCAF radiotherapy and low dose cisplatin has better later therapeutic efficacy on tumor control in patients with nasopharyngeal carcinoma