Wen-Fang Cheng

National Taiwan University, T’ai-pei, Taipei, Taiwan

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Publications (80)298.77 Total impact

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    ABSTRACT: Aside from tumor cells, ovarian cancer-related ascites contains the immune components. The aim of this study was to evaluate whether a combination of clinical and immunological parameters can predict survival in patients with ovarian cancer. Ascites specimens and medical records from 144 ovarian cancer patients at our hospital were used as the derivation group to select target clinical and immunological factors to generate a risk scoring system to predict patient survival. Eighty-two cases from another hospital were used as the validation group to evaluate this risk scoring system. The surgical status and expression levels of interleukin (IL)-17a and IL-21 in ascites were selected for the risk scoring system in the derivation group. The areas under receiver operating characteristic (AUROC) curves of the overall score for disease-free survival (DFS) of the ovarian cancer patients were 0.84 in the derivation group, 0.85 in the validation group and 0.84 for all the patients. The AUROC curves of the overall score for overall survival (OS) of cases were 0.78 in the derivation group, 0.76 in the validation group, and 0.76 for all the studied patients. Good correlations between overall risk score and survival of the ovarian cancer patients were demonstrated by sub-grouping all participants into four groups (p for trend <0.001 for DFS and OS). Therefore, a combination of clinical and immunological parameters can provide a practical scoring system to predict the survival of patients with ovarian carcinoma. IL-17a and IL-21 can potentially be used as prognostic and therapeutic biomarkers.
    Endocrine Related Cancer 07/2015; DOI:10.1530/ERC-15-0145 · 4.91 Impact Factor
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    ABSTRACT: The purpose of this study was to identify the dysregulated genes involved in the tumorigenesis and progression of endometrial endometrioid adenocarcinoma (EEC), and their possible mechanisms. Endometrial specimens including normal endometrial tissues, atypical endometrial hyperplasia, and EEC were analyzed. The expression profiles were compared using GeneChip Array. The gene expression levels were determined by real-time RT-PCR in the training and testing sets to correlate the clinico-pathological parameters of EEC. Immunoblotting, in vitro cell migration and invasion assays were performed in human endometrial cancer cell lines and their transfectants. In microarray analysis, seven dysregulated genes were identified. Only the levels of urokinase-type plasminogen activator (uPA) were higher in EEC with deep myometrial invasion, positive lympho-vascular space invasion, lymph node metastasis, and advanced stages. After multivariate analysis, uPA was the only independent poor prognostic factor for disease-free survival in the EEC patients (hazard ratio: 4.65, p = 0.03). uPA may enhance the migratory and invasive capabilities of endometrial tumor cells by the phosphorylation of ERK1/2, Akt and p38 molecules. uPA is a dysregulated gene involved in the tumorigenesis, bio-pathological features and outcomes of EEC. uPA may be a potential molecule and target for the detection and treatment of EEC.
    Scientific Reports 06/2015; 5:10680. DOI:10.1038/srep10680 · 5.58 Impact Factor
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    ABSTRACT: Insulin-like growth factors (IGFs) can promote tumorigenesis via inhibiting the apoptosis of cancer cells. The relationship between IGFs and dendritic cell (DC)-mediated immunity were investigated. Advanced-staged ovarian carcinoma patients were first evaluated to show higher IGF-1 and IGF-2 concentrations in their ascites than early-staged patients. IGFs could suppress DCs' maturation, antigen presenting abilities, and the ability to activate antigen-specific CD8(+) T cell. IGFs-treated DCs also secreted higher concentrations of IL-10 and TNFα. IGF-treated DCs showed decreased ERK1/2 phosphorylation and reduced p38 dephosphorylation. The percentages of matured DCs in the ascites were significantly lower in the IGF-1 or IGF-2 highly-expressing WF-3 tumor-bearing mice. The IGF1R inhibitor-NVP-AEW541, could block the effects of IGFs to rescue DCs' maturation and to restore DC-mediated antigen-specific immunity through enhancing ERK1/2 phosphorylation and p38 dephosphorylation. IGFs can inhibit DC-mediated anti-tumor immunity through suppressing maturation and function and the IGF1R inhibitor could restore the DC-mediated anti-tumor immunity. Blockade of IGFs could be a potential strategy for cancer immunotherapy. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Cancer Letters 01/2015; 359(1). DOI:10.1016/j.canlet.2015.01.007 · 5.62 Impact Factor
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    ABSTRACT: Ovarian cancer is a cancer of high mortality. Aberrant gene methylation of tumor suppressor genes has been shown to be related to the development of malignancy. This study aimed to investigate the methylation of various genes in ovarian clear cell adenocarcinoma (OCCA) and ovarian endometrioid adenocarcinoma (OEA) and evaluate methylation biomarkers in terms of patient chemo-response and outcome. Eight candidate genes from 66 OCCA and 51 OEA patients were evaluated by methylation-specific polymerase chain reaction and capillary electrophoresis. Clinico-pathological parameters and patient outcomes were analyzed. The frequencies of gene methylation in RASSF1A (79% vs. 59%, p=0.025), E-cadherin (30% vs. 10%, p=0.011), and DLEC1 (71% vs. 43%, p=0.003) were higher in the patients with OCCA than in those with OEA. The chemo-resistant group had a significantly higher percentage of E-cadherin methylation (36.7% vs. 16.1%, p=0.036) than the chemo-sensitive group. In multivariate analysis (log-rank test), advanced stage (4.79 [2.10-10.94], p<0.001) was the only risk factor for mortality. Those with methylation of more than two out of three genes (E-cadherin, DLEC1, and SFRP5) had a shorter disease-free survival (1.89 [1.07-3.32], p=0.028) and overall survival (3.29 [1.57-6.87], p=0.002) than those with methylation of one or no gene. In advanced-stage malignancies, those with more than two out of the three gene methylations also had a shorter overall survival (3.86 [1.63-9.09], p=0.002) than those with methylation of only one or no gene. Patients with OCCA have different patterns of gene methylation than those with OEA. Methylation of the E-cadherin, DLEC1 and SFRP5 genes can be a prognostic biomarker for OCCA and OEA.
    American Journal of Translational Research 01/2015; 7(1):139-52. · 3.23 Impact Factor
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    ABSTRACT: A new cell line, CA5171, derived from a chemotherapy-naive, high-grade undifferentiated ovarian carcinoma was established and characterized. The CA5171 cells presented with cobblestone morphology and a doubling time of 24 hours. Gene mutation analysis showed that the cells belonged to the type II ovarian cancer pathway with mutations of PIK3CA, PTEN, and TP53. Single-nucleotide polymorphism array analysis showed no homozygous gene deletion; however, several loci of gene copy number gains were noted in chromosome 1, 2, 5, 9, 10, 12, 15, 16, 20, and X. The in vitro and in vivo experiments showed that the cells were sensitive to paclitaxel and doxorubicin, but resistant to cisplatin. The cells also presented epithelial-mesenchymal transition properties that may have been related to their invasion and migration potential. The CA5171 cells show the potential as a new cell line for studies on epithelial ovarian carcinoma.
    Reproductive sciences (Thousand Oaks, Calif.) 11/2014; 22(6). DOI:10.1177/1933719114557893 · 2.18 Impact Factor
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    ABSTRACT: Background Associations of obesity and obesity-related metabolic factors (adiposity factors) with uterine corpus cancer (UCC) and ovarian cancer (OVC) risk have been described. Still, a cause-effect relationship and the underlying mediators remain unclear, particularly for low-incidence populations. We aimed to prospectively determine whether adiposity factors could predict the development of UCC and OVC in Taiwanese women. To explore the biological mediators linking adiposity factors to cancer risk, we examined the association of two adipokines, leptin and adiponectin, with the gynecological cancers. Methods Totally, 11,258 women, aged 30–65, were recruited into the Community-Based Cancer Screening Program (CBCSP) study during 1991–1993, and were followed for UCC and OVC cases until December 31, 2011. Cox proportional hazard models were used to estimate hazard ratios (HRs). Adiposity factors and risk covariates were assessed at recruitment. Newly-developed cancer cases were determined from data in the government’s National Cancer Registry and Death Certification System. For adipokienes study, a nested case-control study was conducted within the cohort. Baseline plasma samples of 40 incident gynecological cancer cases and 240 age-menopause-matched controls were assayed for adipokines levels. Findings There were 38 and 30 incident cases of UCC and OVC, respectively, diagnosed during a median 19.9 years of follow-up. Multivariate analysis showed that alcohol intake (HR = 16.00, 95% = 4.83–53.00), high triglyceride levels (HR = 2.58, 95% = 1.28–5.17), and years of endogenous estrogen exposure per 5-year increment (HR = 1.91, 95% = 1.08–3.38) were associated with increased UCC risk. High body mass index (BMI≥27 kg/m2, HR = 2.90, 95% = 1.30–6.46) was associated with increased OVC risk. Analysis further showed an independent effect of adipokines on UCC and OVC risk after adjustment of the risk covariates. Conclusion We provided evidence that alcohol intake, high triglyceride levels and long endogenous estrogen exposure increase UCC risk, whereas obesity positively predicts OVC risk. Circulating adipokines may mediate the link of adiposity factors to gynecological cancer risk.
    PLoS ONE 08/2014; 9(8):e104630. DOI:10.1371/journal.pone.0104630 · 3.23 Impact Factor
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    ABSTRACT: Recently, mutations of telomerase reverse transcriptase (TERT) promoter were found in several types of cancer. A few reports demonstrate TERT promoter mutations in ovarian clear cell carcinomas but endometrial clear cell carcinoma has not been studied. The aims of this study were to compare differences of molecular alterations and clinical factors, and identify their prognostic impact in endometrial and ovarian clear cell carcinomas. We evaluated mutations of the TERT promoter and PIK3CA, expression of ARID1A, and other clinicopathological factors in 56 ovarian and 14 endometrial clear cell carcinomas. We found that TERT promoter mutations were present in 21% (3/14) of endometrial clear cell carcinomas and 16% (9/56) of ovarian clear cell carcinomas. Compared with ovarian clear cell carcinomas, endometrial clear cell carcinomas showed older mean patient age (P<0.001), preserved ARID1A immunoreactivity (P=0.017) and infrequent PIK3CA mutation (P=0.025). In ovarian clear cell carcinomas, TERT promoter mutations were correlated with patient age >45 (P=0.045) and preserved ARID1A expression (P=0.003). In cases of endometrial clear cell carcinoma, TERT promoter mutations were not statistically associated with any other clinicopathological factors. In ovarian clear cell carcinoma patients with early FIGO stage (stages I and II), TERT promoter mutation was an independent prognostic factor and correlated with a shorter disease-free survival and overall survival (P=0.015 and 0.009, respectively). In recurrent ovarian clear cell carcinoma patients with early FIGO stage, TERT promoter mutations were associated with early relapse within 6 months (P=0.018). We concluded that TERT promoter mutations were present in endometrial and ovarian clear cell carcinomas. Distinct molecular alteration patterns in endometrial and ovarian clear cell carcinomas implied different processes of tumorigenesis in these morphologically similar tumors. In ovarian clear cell carcinoma of early FIGO stage, patients with TERT promoter mutation require close follow-up during the initial 6 months following chemotherapy.Modern Pathology advance online publication, 1 August 2014; doi:10.1038/modpathol.2014.93.
    Modern Pathology 08/2014; 28(2). DOI:10.1038/modpathol.2014.93 · 6.36 Impact Factor
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    ABSTRACT: Objective. The aim of this study was to investigate the clinical and pathological characteristics of uterine clear cell carcinoma (UCCC) and the treatment of this disease in relation to patient outcomes. Methods. The clinicopathological data for and the management of all patients with UCCC who presented between 1991 and 2010 at 11 member hospitals of the Taiwanese Gynecologic Oncology Group (TGOG) were retrospectively reviewed. Results. There were no significant differences in 5-year overall survival (OS) rates between patients with pure UCCC (n = 100) and non-pure UCCC (n = 53) at the same surgical stage, with OS rates of 92.6%, and 87.7% for stage I; 83.3% and 833% for stage II; 64.0% and 67.8% for stage III; and 16.7% and 0% for stage IV (n = 1), respectively. Tumor stage and age independently influenced the OS rate of UCCC For the patients with early stage UCCC, the adjuvant therapy modality was the only significant prognostic factor for recurrence-free survival. The patients with early stage UCCC who received adjuvant therapy had excellent 5-year recurrence-free survival and OS rates compared to those who received radiotherapy (100% vs. 74%, p = 0.01; 100% vs. 72%, p = 0.03). Conclusions. The 5-year survival rates of patients with pure UCCC and non-pure UCCC were similar. The prognosis for surgical staging of patients with stage I/II UCCC was encouraging. Postoperative adjuvant platinum-based chemotherapy is recommended for patients with early stage UCCC who are at a high risk of recurrence.
    Gynecologic Oncology 07/2014; 134(3). DOI:10.1016/j.ygyno.2014.07.005 · 3.69 Impact Factor
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    ABSTRACT: Purpose: Imiquimod is a toll-like receptor 7 agonist utilized topically to manage genital warts and basal cell carcinoma. We examine the combination of topical imiquimod with intramuscular administration of CRT/E7, a therapeutic HPV vaccination that comprises a naked DNA vector expressing calreticulin fused to HPV16 E7. Experimental Design: Using an orthotopic HPV16 E6/E7+ syngeneic tumor, TC-1, as a model of high-grade cervical/vaginal/vulvar intraepithelial neoplasia, we show that combining CRT/E7 vaccination with cervicovaginal deposition of imiquimod results in synergistic immune-mediated tumor clearance. Results: Imiquimod induces cervicovaginal accumulation of activated E7-specific CD8+ T cells elicited by CRT/E7 vaccination. Recruitment was not dependent upon the specificity of the activated CD8+ T cells, but was significantly reduced in mice lacking the IFNγ receptor. Intravaginal imiquimod deposition induced upregulation of CXCL9 and CXCL10 mRNA expression in the genital tract. These chemokines are expressed upon IFNγ receptor activation and attract cells expressing their receptor, CXCR3. In this study, T cells attracted by imiquimod to the cervicovaginal tract expressed CXCR3 as well as the tissue resident memory T cell (Trm) marker CD49a, a mucosal homing integrin. Our results indicate that intramuscular CRT/E7 vaccination in conjunction with intravaginal imiquimod deposition recruits antigen-specific CXCR3+CD8+ T cells to the genital tract. Conclusions: Our study has potential clinical relevance because imiquimod is FDA approved for condyloma accuminata and basal cell carcinoma and intramuscular vaccination with pNGVL4a-CRT/E7(detox) is currently undergoing clinical testing, suggesting potential for their synergistic action to induce strong antigen-specific Trm-mediated immune responses and antitumor effects in genital mucosa.
    Clinical Cancer Research 06/2014; 20(21). DOI:10.1158/1078-0432.CCR-14-0344 · 8.19 Impact Factor
  • Yi-Jou Tai · Ming-Chieh Lin · Chin-Jui Wu · Chi-An Chen · Wen-Fang Cheng
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    ABSTRACT: Objective To report a case of isolated omental peritoneal carcinoma without peritoneal carcinomatosis. Case report A 60-year-old female with abdominal distention was found to have a pelvic mass. Under the impression of ovarian cancer, laparotomy was performed only to show one isolated mass over omentum. Serial examination and pathology study including immunochemical staining indicated primary peritoneal serous carcinoma. Conclusion Isolated omental peritoneal carcinoma without peritoneal carcinomatosis and ascites is rare, and whether this represented a unique entity with different chemotherapy response and treatment outcome from the disseminated form of primary peritoneal carcinoma needs to be reviewed in the future.
    Taiwanese Journal of Obstetrics and Gynecology 06/2014; 53(2):256–259. DOI:10.1016/j.tjog.2014.02.001 · 1.26 Impact Factor
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    ABSTRACT: Objective To investigate the clinical and pathological characteristics and the management of uterine papillary serous carcinoma (UPSC) in relation to patients’ outcomes. Methods Clinicopathological data and the management of patients treated between 1991 and 2010 at 11 member hospitals of the Taiwanese Gynecologic Oncology Group (TGOG) were retrospectively reviewed. The Kaplan-Meier method was used to generate survival curves, and factors predictive of outcome were compared using the log-rank test and Cox regression analysis. Results A total of 119 pure UPSC patients were recruited. Stages I, II, III, and IV were identified in 34.5%, 2.5%, 36.1%, and 26.9% of the patients, respectively. The recurrence rate was 20.5% in FIGO stage I/II disease and 55.2% in FIGO stage III/IV disease. The 5-year overall survival rates for the patients with stage I, II, III, and IV disease were 92.0%, 66.7%, 34.2%, and 17.3%, respectively. Multivariate analysis showed that tumor stage (stages III/IV hazard ratio [HR] 8.65, 95% confidence interval [CI] 3.00-24.9) and optimal cytoreduction (HR 0.40, 95%CI 0.22-0.73) independently influenced the overall survival rate of UPSC patients. In addition, optimal cytoreduction (HR 0.36, 95%CI 0.17-0.78) and the combination of chemotherapy and radiation (HR 0.11, 95%CI 0.04-0.37) improved the overall survival of the advanced stage (FIGO stages III/IV) UPSC patients. Conclusions UPSC represents an aggressive subtype of endometrial cancer commonly accompanied by extra-uterine disease. Comprehensive surgical staging with cytoreductive surgery is mandatory and beneficial for UPSC patients. Systemic chemotherapy combined with radiation should be considered as adjuvant therapy for advanced stage UPSC patients.
    Gynecologic Oncology 05/2014; 133(2). DOI:10.1016/j.ygyno.2014.02.010 · 3.69 Impact Factor
  • Chia-Chieh Lee · Yu-Li Chen · Jau-Yu Liau · Chi-An Chen · Wen-Fang Cheng
    Taiwanese journal of obstetrics & gynecology 03/2014; 53(1):104-6. DOI:10.1016/j.tjog.2013.08.001 · 1.26 Impact Factor
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    ABSTRACT: Aggressive epithelial ovarian cancers (EOCs) frequently progress and become fatal, even when cytoreduction surgery plus platinum-based chemotherapy is performed. Thus, the early detection of high-risk subgroups is important to provide opportunities for better treatment outcomes, using alternative therapeutic strategies. This study aimed to explore the expression of circulating insulin-like growth factor (IGF) system components and their relationship with treatment outcome in EOC. We included 228 patients with median follow-up time of 44 months at 2 tertiary centers. There were 68 cancer deaths and 108 cases of cancer progression in the cohort. Preoperative serum levels of total IGF1, IGF2, IGF binding protein 2 (IGFBP2), and IGFBP3 were analyzed using an enzyme-linked immunosorbent assay and were then converted into an IGF1/IGFBP3 molar ratio. The risks of mortality and progression were estimated using Cox regression models in univariate and multivariate analyses. Our results showed that high IGF1, IGF2, and IGFBP3 levels were significantly associated with an early cancer stage, non-serous histology, and optimal cytoreduction. High IGFBP2 levels were associated with an advanced stage and serous histology. Overall and progression-free survival durations were significantly better among patients with high IGF1, IGF2, or IGFBP3 levels. In multivariate analysis, serum IGFBP2 levels were significantly associated with increased risk of mortality (hazard ratio = 1.84, 95% confidence interval: 1.07-3.18, p = 0.03), indicating that IGFBP2 could be used as an early predictor of EOC-related mortality. The combination of elevated IGFBP2 and reduced IGF1 levels at diagnosis could further facilitate the identification of a patient subgroup with the worst prognosis.
    Endocrine Related Cancer 11/2013; 21(2). DOI:10.1530/ERC-13-0274 · 4.91 Impact Factor
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    ABSTRACT: To investigate the changes of incidence and prognosis of epithelial ovarian cancer in thirty years in Taiwan. The databases of women with epithelial ovarian cancer during the period from 1979 to 2008 were retrieved from the National Cancer Registration System of Taiwan. The incidence and prognosis of these patients were analyzed. Totally 9,491 patients were included in the study. The age-adjusted incidences of epithelial ovarian cancer were 1.01, 1.37, 2.37, 3.24, 4.18, and 6.33 per 100,000 person-years, respectively, in every 5-year period from 1979 to 2008. The age-specific incidence rates increased especially in serous, endometrioid and clear cell carcinoma, and the age of diagnosis decreased from sixty to fifty years old in the three decades. Patients with mucinous, endometrioid, or clear cell carcinoma had better long-term survival than patients with serous carcinoma (log rank test, p<0.001). Patients with undifferentiated carcinoma or carcinosarcoma had poorer survival than those with serous carcinoma (log rank test, p<0.001). The mortality risk of age at diagnosis of 30-39 was significantly higher than that of age of 70 years or more (test for trend, p<0.001). The mortality risk decreased from the period of 1996-1999 (hazard ratio [HR], 0.90; p=0.054) to the period after 2000 (HR, 0.74; p<0.001) as compared with that from the period of 1991-1995. An increasing incidence and decreasing age of diagnosis in epithelial ovarian cancer patients were noted. Histological type, age of diagnosis, and treatment period were important prognostic factors for epithelial ovarian carcinoma.
    Journal of Gynecologic Oncology 10/2013; 24(4):342-51. DOI:10.3802/jgo.2013.24.4.342 · 1.60 Impact Factor
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    ABSTRACT: Human papillomavirus (HPV) has been consistently implicated in causing several kinds of malignancies, and two HPV oncogenes, E6 and E7, represent two potential target antigens for cancer vaccines. We developed two fusion protein vaccines, PE(ΔIII)/E6 and PE(ΔIII)/E7 by targeting these two tumor antigens to test whether a combination of two fusion proteins can generate more potent anti-tumor effects than a single fusion protein. In vivo antitumor effects including preventive, therapeutic, and antibody depletion experiments were performed. In vitro assays including intracellular cytokine staining and ELISA for Ab responses were also performed. PE(ΔIII)/E6+PE(ΔIII)/E7 generated both stronger E6 and E7-specific immunity. Only 60% of the tumor protective effect was observed in the PE(ΔIII)/E6 group compared to 100% in the PE(ΔIII)/E7 and PE(ΔIII)/E6+PE(ΔIII)/E7 groups. Mice vaccinated with the PE(ΔIII)/E6+PE(ΔIII)/E7 fusion proteins had a smaller subcutaneous tumor size than those vaccinated with PE(ΔIII)/E6 or PE(ΔIII)/E7 fusion proteins alone. Fusion protein vaccines targeting both E6 and E7 tumor antigens generated more potent immunotherapeutic effects than E6 or E7 tumor antigens alone. This novel strategy of targeting two tumor antigens together can promote the development of cancer vaccines and immunotherapy in HPV-related malignancies.
    PLoS ONE 09/2013; 8(9):e71216. DOI:10.1371/journal.pone.0071216 · 3.23 Impact Factor
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    ABSTRACT: The ovarian cancer-associated ascites is an ideal material for evaluating the interaction between the host immune system and cancer cells in the tumor micro-environment. The aim of this study was to investigate whether the selected target cytokine expression levels in ascites could serve as an immune biomarker for predicting outcomes in ovarian cancer. Eighty-eight specimens of ovarian cancer-associated ascites were evaluated to select the target cytokine by a cytokine profiling kit. The total 144 samples were subsequently analyzed for this target cytokine. The correlation between the target cytokine and clinical characteristics were analyzed. Interferon-gamma (IFN-γ) was identified as the target cytokine. Higher levels of IFN-γ in the ascites of the tumor micro-environment were associated with advanced disease (p=0.012), higher tumor histological grading (p=0.004), and sub-optimal surgical status (p=0.040). By multivariate analysis, the adjusted hazard ratios (HRs) were 2.74 (95% confidence interval (CI) 1.85-4.05, p<0.001) for disease-free survival (DFS) and 1.72 (95% CI 1.01-2.93, p=0.048) for overall survival (OS) for a 10-fold increase in IFN-γ concentration in the ascites. An inverse dose-response relationship between IFN-γ level and survival was also noted (Ptrend <0.001 for DFS and Ptrend <0.042 for OS). Patients with ovarian cancer and higher IFN-γ expression levels in cancer-associated ascites will have shorter DFS and OS. IFN-γ levels in the ascites may be a prognostic marker and a potential reference for immunotherapy targeting IFN-γ.
    Gynecologic Oncology 07/2013; 131(1). DOI:10.1016/j.ygyno.2013.07.105 · 3.69 Impact Factor
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    ABSTRACT: To investigate the various genotypes of human papillomavirus (HPV) in Taiwanese women patients with abnormal cervical cytology and analyze the associations between HPV types, cervical preinvasive lesions, and the medical characteristics of these patients. We performed HPV genotyping GeneChip procedures and colposcopies for 784 women with abnormal Papanicolaou smears. The characteristics of the patients and the status of the HPV infection were correlated. A total of 706 (90.1%) of the 784 women were positive for HPV infection, including 641 patients with high-risk HPV (HR-HPV). Among the patients with high-grade squamous intraepithelial lesions (HSILs), the average age of the 273 patients with other HR-HPV types (48.6 ± 13.8 years) was significantly older than the 222 patients infected with HPV 16/18 (39.8 ± 11.8 years) (p < 0.001). The proportion of patients with HSILs who were older than 40 years and infected with other HR-HPV types (76.6%) was also significantly higher than those with HPV 16/18 (20.3%) (p < 0.001). Women older than 40 years and having abnormal Pap smears and HR-HPV infections other than type 16/18 should be managed carefully because of the risk for HSILs.
    Taiwanese journal of obstetrics & gynecology 06/2013; 52(2):222-6. DOI:10.1016/j.tjog.2013.04.012 · 1.26 Impact Factor
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    ABSTRACT: Epithelial ovarian carcinoma is usually present at the advanced stage, during which the patients generally have poor prognosis. Our study aimed to evaluate the correlation of gene methylation and the clinical outcome of patients with advanced stage high grade ovarian serous carcinoma. The methylation status of eight candidate genes was first evaluated by methylation-specific polymerase chain reaction and capillary electrophoresis to select three potential genes including DAPk, E-cadherin, and BLU from the exercise group of 40 patients. The methylation status of these three genes was further investigated in the validation group consisting of 136 patients. Patients with methylated BLU had significantly shorter progression free survival (PFS) (HR: 1.48, 95% C.I.: 1.01-2.56, p=0.013) and overall survival (OS) (HR: 1.83, 95% C.I.: 1.07-3.11, p=0.027) in multivariate analysis. Methylation of BLU was also an independent risk factor of those 58 patients undergoing optimal debulking surgery for PFS (HR: 2.37, 95% C.I.: 1.03-5.42, p=0.043) and OS (HR: 3.96, 95% C.I.: 1.45-10.81, p=0.007) in multivariate analysis. The possible mechanism of BLU in chemo-resistance was investigated in ovarian cancer cell line by in vitro apoptotic assays. In vitro studies showed that BLU could up-regulate the expression of Bax and enhance the effect of paclitaxel-induced apoptosis in ovarian cancer cells. Our study suggested that methylation of BLU could be a potential prognostic biomarker for advanced ovarian serous carcinoma.
    Endocrine Related Cancer 01/2013; DOI:10.1530/ERC-12-0117 · 4.91 Impact Factor
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    ABSTRACT: Uterine cancer was the most rapidly increasing malignancy and the second most common gynecologic malignancy in Taiwan. We analyzed the secular trend of uterine cancer incidence and compare the survival of women with uterine carcinomas and uterine sarcomas in Taiwan. Data on women diagnosed with uterine cancer between 1979 and 2008 were obtained from the Taiwan cancer registry. Survival data were analyzed by using Kaplan-Meier and Cox proportional hazards regression methods. Records of 11,558 women with uterine carcinomas and 1,226 women with uterine sarcomas were analyzed. The age-adjusted incidence rate of endometrioid adenocarcinoma increased from 0.83 per 100,000 women per year between 1979 and 1983 to 7.50 per 100,000 women per year between 2004 and 2008. The 5-year survival rate of women with endometrioid adenocarcinoma (83.2%) was higher than that for women with clear cell carcinoma (58.3%), serous carcinoma (54.4%), and carcinosarcoma (35.2%) (p<0.0001, log-rank test). The 5-year survival rates of women with low grade endometrial stromal sarcoma, endometrial stromal sarcoma, leiomyosarcoma (LMS), and adenosarcoma were 97.5%, 73.5%, 60.1%, and 77.2%, respectively (p<0.0001, log rank test). The histologic type of endometrioid adenocarcinoma, young age, and treatment period after 2000 were independent, favorable prognostic factors in women with uterine carcinomas by multivariate analysis. The histologic type of LMS, old age, and treatment period after 2000 were independent, poor prognostic factors in women with uterine sarcomas by multivariate analysis. An increase over time in the number of patients with endometrioid adenocarcinomas was noted in this 30-year, nationwide, population-based study. Histologic type, age and treatment period were survival factors for uterine cancers. A more comprehensive assessment of uterine cancers and patient care should be undertaken on this increasingly common type of cancer.
    PLoS ONE 12/2012; 7(12):e51372. DOI:10.1371/journal.pone.0051372 · 3.23 Impact Factor
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    ABSTRACT: The regulatory T cells (Tregs) can actively suppress the immune responses. However, literature about detailed changes of host effective and suppressive immunities before and after depletion of Tregs in ovarian carcinomas, is rare. Ovarian cancer patients and the ascitogenic animal model were employed. Immunologic profiles with flow cytometric analyses, immunohistochemistric staining, RT-PCR, ELISA, and ELISPOT assays were performed. In vivo depletion of Treg cells with the mAb PC61was also performed in the animal model. The cytokines, including IL-4 (p = 0.017) and TNF-α (p = 0.046), significantly decreased while others such as TGF-β (p = 0.013), IL-6 (p = 0.016), and IL-10 (p = 0.018) were elevated in ascites of ovarian cancer patients, when the disease progressed to advanced stages. The ratio of CD8(+) T cell/Treg cell in ascites was also lower in advanced diseases than in early diseases (advanced 7.37±0.64 vs. early 14.25±3.11, p = 0.037). The kinetic low-dose CD25 Ab depletion group had significantly lower intra-peritoneal tumor weight (0.20±0.03 g) than the sequential high-dose (0.69±0.06 g) and sequential low-dose (0.67±0.07 g) CD25 Ab deletion groups (p = 0.001) after 49 days of tumor challenge in the animal. The kinetic low-dose CD25 Ab depletion group generated the highest number of IFN-γ-secreting, mesothelin-specific T lymphocytes compared to the other groups (p<0.001). The imbalance between effective and suppressive immunities becomes more severe as a tumor progresses. The depletion of Treg cells can correct the imbalance of immunologic profiles and generate potent anti-tumor effects. Targeting Treg cells can be a new strategy for the immunotherapy of ovarian carcinoma.
    PLoS ONE 10/2012; 7(10):e47190. DOI:10.1371/journal.pone.0047190 · 3.23 Impact Factor

Publication Stats

997 Citations
298.77 Total Impact Points

Institutions

  • 1999–2015
    • National Taiwan University
      • • College of Medicine
      • • Graduate Institute of Oncology
      • • Institute of Biomedical Engineering
      T’ai-pei, Taipei, Taiwan
  • 1998–2013
    • National Taiwan University Hospital
      • • Department of Oncology
      • • Department of Internal Medicine
      T’ai-pei, Taipei, Taiwan
  • 2011
    • Academia Sinica
      • Genomics Research Center
      T’ai-pei, Taipei, Taiwan
  • 2007
    • Mackay Memorial Hospital
      • Department of Pediatrics
      T’ai-pei, Taipei, Taiwan
    • Taipei Medical University
      • Department of Obstetrics and Gynecology
      T’ai-pei, Taipei, Taiwan
  • 2001–2003
    • Johns Hopkins Medicine
      • Department of Pathology
      Baltimore, MD, United States
  • 2002
    • Johns Hopkins University
      • Department of Pathology
      Baltimore, Maryland, United States