Tianjin Lung Cancer Center

Tianjin, China

Tianjin Lung Cancer Center

Tianjin, China
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Wang S.,Tianjin Medical University | Wang S.,Tianjin Lung Cancer Center | Wang S.,Tianjin Key Laboratory of Cancer Prevention and Therapy | Wang S.,National Clinical Research Center for Cancer | And 24 more authors.
BioMed Research International | Year: 2017

PinX1 has been identified as a suppressor of telomerase enzymatic activity. However, the tumour-suppressive roles of PinX1 in different types of human cancers are unclear. PinX1 expression status and its correlation with clinicopathological features in non-small-cell lung cancer (NSCLC) have not been investigated. Accordingly, in this study, we aimed to evaluate the roles of PinX1 in NSCLC. PinX1 expression status was examined by immunohistochemistry using tissue microarray from a total of 158 patients. Correlations among PinX1 expression, clinicopathological variables, and patient survival were analysed. Furthermore, we overexpressed PinX1 in NSCLC cells and tested telomerase activity using real-time quantitative telomeric repeat amplification protocol (qTRAP) assays. Proliferation and migration of NSCLC cells were examined using the MTS method, wound healing assays, and transwell assays, respectively. Our results showed that negative PinX1 expression was associated with a poor prognosis in NSCLC. Sex, smoking status, lymph gland status, subcarinal lymph node status, pathological stage, and PinX1 expression were related to survival. PinX1 was not an independent prognostic factor in NSCLC. PinX1 overexpression inhibited proliferation and migration in NSCLC cells by suppressing telomerase activity. Our findings suggested that PinX1 could be a potential tumour suppressor in NSCLC and that loss of PinX1 promoted NSCLC progression. © 2017 Shengguang Wang et al.

Zhuang H.,Tianjin Medical University | Zhuang H.,Tianjin Key Laboratory of Cancer Prevention and Therapy | Zhuang H.,Tianjin Lung Cancer Center | Yuan Z.,Tianjin Medical University | And 14 more authors.
Drug Design, Development and Therapy | Year: 2013

The aim of this paper is to explore the efficacy of whole brain radiotherapy (WBRT) versus WBRT concurrent with erlotinib in patients with multiple brain metastases of lung adenocarcinoma. WBRT was administered at 30Gy/10f in both arms. In the combination arm, 150 mg erlotinib was given each day, starting the first day of radiotherapy and continuing for 1 month following the end of radiotherapy. Thereafter, pemetrexed or docetaxel monotherapy or the best supportive therapy was given to both arms. The intracranial objective response rate and the local progression-free survival (LPFS) were primary endpoints. Toxicity, progression-free survival (PFS) and overall survival (OS) were secondary endpoints. Thirty-one patients in the WBRT group and 23 patients in the combination group were enrolled from November 2009 to December 2011. In the WBRT and the combination arms, respectively, the objective response rate was 54.84% and 95.65% (P = 0.001), the median local progression-free survival was 6.8 months and 10.6 months (P = 0.003), the median PFS was 5.2 months and 6.8 months (P = 0.009), and median OS was 8.9 months and 10.7 months (P = 0.020). In the combination group, there were no differences of LPFS, PFS, and OS between the epidermal growth factor receptor (EGFR) mutation patients and EGFR wild-type patients. No Grade 4 or higher side effects were observed in either group. A multivariate analysis indicated that erlotinib was the most important prognostic factor for a prolonged survival. Data showed that erlotinib in combination with WBRT had a tolerable toxicity profile and prolonged the LPFS, PFS, and OS of lung adenocarcinoma patients with multiple brain metastases compared with WBRT monotherapy. © 2013 Zhuang et al.

Zhao X.,Tianjin Medical University | Zhao X.,Tianjin Lung Cancer Center | Zhao X.,Tianjin Key Laboratory of Cancer Prevention and Therapy | Zhao X.,National Clinical Research Center for Cancer | And 32 more authors.
Oncotarget | Year: 2016

To evaluate the safety and efficacy of combining Endostar antiangiogenic therapy with neoadjuvant chemotherapy for the treatment of stage IIIA (N2) NSCLC, we conducted a randomized, controlled, open-label clinical study of 30 NSCLC patients. Patients were randomly assigned to the test or control groups, which received either two cycles of an NP neoadjuvant chemotherapy regimen combined with Endostar or the NP regimen alone, respectively, at a 2:1 ratio. Efficacy was assessed after 3 weeks, and surgical resection occurred within 4 weeks, in the 26 patients who successfully completed treatment. While total response rates (RR) and clinical benefit rates (CBR) did not differ between the experimental groups, total tumor regression rates (TRR) were higher in the test group than in the control group. Median DFS and OS also did not differ between the test and control groups. Clinical perioperative indicators, including intraoperative blood loss, number of dissected lymph node groups, duration of postoperative indwelling catheter use, and time to postoperative discharge, were comparable in the test and control groups. Finally, hematological and non-hematological toxicities and postoperative pathological indicators, including down-staging ratio, complete resection ratio, and metastatic lymph node ratio, also did not differ between the groups. Overall, combining Endostar with NP neoadjuvant chemotherapy increased therapeutic efficacy without increasing adverse effects in stage IIIA-N2 NSCLC patients. This study is registered with ClinicalTrials.gov (number NCT02497118).

Zhuang H.-Q.,Tianjin Medical University | Zhuang H.-Q.,Tianjin Lung Cancer Center | Zhuang H.,Weifang Peoples Hospital | Bo Q.,Weifang Medical University | And 10 more authors.
Cancer Cell International | Year: 2014

Purpose: Erlotinib is a novel therapeutic agent for cancer treatment. This study was performed to investigate therole of c-MET-PI3K-AKT pathway in the regulation of erlotinib-induced radiosensitization.Methods: A973 lung adenocarcinoma cells treated with 6 Gy of radiation were incubated in the presence oferlotinib. The apoptotic rate after 24 hours, the colony-formating rate after 14 days, and changes in the c-METexpression levels after 14 days of irradiation were examined. Surviving fractions in different treatment groups (blankcontrol, radiation alone, erlotinib alone, anti-c-MET monoclonal antibody alone, combined erlotinib and radiation,and combined erlotinib and radiation with anti-c-MET monoclonal antibody groups) were determined, the survivalcurves were plotted, and the sensitizer enhancement ratio was calculated using colony formation assays. Expressions ofc-MET, p-c-MET, PI3K, AKT, and p-AKT in cells in different treatment groups were examined by Western blot analysis. Results: The apoptotic rate in the combined erlotinib and radiation group was higher than those in single treatment groups; however, the colony-forming rate remained approximately 2.04 ± 1.02%. The expression of c-MET in colony-forming cells in the combined group significantly increased, and the blockade of c-MET activity significantly enhanced the radiosensitizing effect of erlotinib. The expression of c-Met, p-c-MET, PI3K, AKT, and p-AKT among colony-forming cells significantly decreased upon the inhibition of c-MET.Conclusions: Upregulated activity of the c-MET-PI3K-AKT pathway was found to be important for cell survival under combined the treatment with erlotinib and radiation. The blockade of the c-MET-PI3K-AKT signaling pathway enhanced the radiosensitizing effect of erlotinib. © 2014 Zhuang et al.

Zhang B.,Tianjin Medical University | Zhang B.,Tianjin Lung Cancer Center | Zhao L.,Tianjin Medical University | Zhao L.,Tianjin Lung Cancer Center | And 6 more authors.
OncoTargets and Therapy | Year: 2016

Objective: The use of postoperative radiotherapy (PORT) remains controversial for Stage IIIA-N2 non-small-cell lung cancer (NSCLC) patients, a possible reason is that IIIA-pN2 NSCLC diseases are a heterogeneous group with different clinicopathologic features. The aim of this research was to prove whether the mediastinal lymph nodes’ (LNs) skipping status could indicate the necessity of the PORT for the pN2 NSCLC patients. Methods: The skip metastasis was defined as pN0N2 (no N1 LN involved), and nonskip metastasis was pN1N2 (one or more N1 LNs involved). Patients were divided into two groups: LNs nonskip and LNs skip, and postoperative chemoradiotherapy (POCRT) and postoperative chemotherapy. Then, the LN nonskip and LN skip groups were further divided into subgroups: POCRT and point of care testing (POCT) for subgroup analysis. Results: There were 220 cases included in the analysis, and 43 of them received PORT. On univariate analysis, the median 3-year progression-free survival (PFS) was, respectively, 16 months (27.7%) for the LN skip group and 11 months (15.3%) for the LN nonskip group (P=0.001). The median 3-year overall survival (OS) was, respectively, 35 months (47.0%) for the LN skip group and 27 months (38.7%) for the LN nonskip group (P=0.025). The median 3-year local recurrence-free survival (LRFS) was, respectively, 25 months (41.0%) for the LN skip group and19 months (29.9%) for the LN nonskip group (P=0.014). The median 3-year distant metastasis-free survival (DMFS) was, respectively, 22 months (32.5%) for the LN skip group and 15 months (20.4%) for the LN nonskip group (P=0.013). The median 3-year PFS was, respectively, 17 months (25.6%) for the POCRT group and 12 months (18.6%) for the POCT group (P=0.037). Although the POCRT group showed better OS, LRFS, and DMFS than the POCT group, the results showed no statistical significance. In subgroup analysis, there was no statistical significance in the Kaplan-Meier analysis between subgroups, but it showed that POCRT resulted in better PFS, OS, and DMFS in both LN skip and LN nonskip subgroups; this advantage was more obvious in the LN skip subgroup. Conclusion: The LN skip status is closely related to the survival of the IIIA-N2 NSCLC disease, and the LN skip patients may get more benefit in PFS and LRFS than the LN nonskip patients from PORT. © 2016 Zhang et al.

Zhang H.,Tianjin Medical University | Zhang H.,Key Laboratory of Cancer Prevention and Therapy | Zhang H.,Tianjin Lung Cancer Center | Zhang L.,Tianjin Medical University | And 21 more authors.
PLoS ONE | Year: 2015

Introduction: The aim of this study was to investigate the prognostic significance of the combination of the preoperative platelet count and neutrophil-lymphocyte ratio (COP-NLR) for predicting postoperative survival of patients undergoing complete resection for non-small cell lung cancer (NSCLC). Methods: The preoperative COP-NLR was calculated on the basis of data obtained.Patients with both an increased platelet count (>30.0×104 mm-3) and an elevated NLR (>2.3) were assigned a score of 2, and patients with one or neither were assigned as a score of 1 or 0, respectively. Results: A total of 1238 NSCLC patients were enrolled in this analysis. Multivariate analysis using the 15 clinicolaboratory variables selected by univariate analyses demonstrated that the preoperative COP-NLR was an independent prognostic factor for DFS (HR: 1.834, 95%CI: 1.536 to 2.200, P<0.001) and OS (HR: 1.810, 95%CI: 1.587 to 2.056, P<0.001). In subanalyses by tumor stage (I, II, IIIA), a significant association was found between DFS and OS and level of COP-NLR in each subgroup (P<0.001, P=0.002, P<0.001 for DFS, respectively; P<0.001, P=0.001, P<0.001 for OS). When the subgroup of patients with high-risk COP-NLR (score of 2) was analyzed, no benefit of adjuvant chemotherapy could be found (P=0.237 for DFS and P=0.165 for OS). Conclusions: The preoperative COP-NLR is able to predict the prognosis of patients with NSCLC and divide these patients into three independent groups before surgery. Our results also demonstrate that high-risk patients based on the COP-NLR do not benefit from adjuvant chemotherapy. Independent validation of our findings is warranted. © 2015 Zhang et al.

Hao L.,Tianjin Medical University | Hao L.,Key Laboratory of Cancer Prevention and Therapy | Hao L.,Tianjin Lung Cancer Center | Zhao X.,Tianjin Medical University | And 11 more authors.
Tumor Biology | Year: 2015

This study aims to investigate the expression level of pro-opiomelanocortin (POMC) and its prognostic value in non-small cell lung cancer (NSCLC). Immunohistochemical staining was used to detect the expression level of POMC. Correlations between POMC expression and clinical and pathological characteristics were evaluated with the chi-square test, and the prognostic value was determined with the Kaplan–Meier method and COX proportional hazards model, α < 0.05. Of the samples, 48.0 % had positive POMC expression. POMC expression was significantly related to poorly differentiated tumors, N-stage, p-stage, postoperative failure pattern, expression of vimentin, and expression of E-cadherin (P < 0.05). Multivariate analysis revealed that POMC-positive expression was an independent risk factor for disease-free survival (hazard ratio (HR) 1.988, 95 % confidence interval (CI) 1.094–3.910, P = 0.024) and overall survival (HR 1.892, 95 % CI 1.726–3.709, P = 0.036). The addition of POMC protein expression to the prognostic model using pathological stage markedly improved the prognostic potential, and the area under the ROC increased from 0.691 to 0.775. Further study revealed that patients with POMC-negative expression can benefit more from a regimen of paclitaxel and carboplatin chemotherapy than a regimen of vinorelbine and carboplatin compared to patients with POMC-positive expression. We found that POMC-positive expression is a novel, independent poor prognostic marker in patients with NSCLC. Prospective studies are needed to validate the potential prognostic value of POMC in combination with the current staging system and in consideration of adjuvant chemotherapy. © 2014, International Society of Oncology and BioMarkers (ISOBM).

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