Hong Zhang

Capital Medical University, Peping, Beijing, China

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Publications (17)30.71 Total impact

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    ABSTRACT: Patients with asthma COPD overlap syndrome (ACOS) are an important but poorly characterized group. This study sought to explore the distinct characteristics of ACOS on CT densitometry. The study population was randomly selected from communities via questionnaires. All participants underwent low-dose volumetric chest CT both before and after bronchodilator administration. Each CT scan was performed at full-inspiration and full-expiration for CT densitometry. Emphysema index (EI), air trapping (AT), mean lung density (MLD) and total lung volume (TLV) were measured and compared between the ACOS and COPD groups. The distributions of both EI and AT were compared between patients with ACOS and COPD. The variations between the pre- and post-BD measurements observed in patients with ACOS were compared with those in patients with COPD. A total of 71 patients completed the study, including 32 patients with COPD and 39 patients with ACOS. The patients with ACOS exhibited lower EI and more upper-zone-predominant EI distributions, compared with the patients with COPD. No significant differences were exhibited in AT and its distribution. Following bronchodilator administration, the variations in AT and expiratory MLD were greater in patients with ACOS than in patients with COPD. No differences were observed in the variations of EI and inspiratory MLD. Our results indicate that patients with ACOS have lower extent of emphysema and different emphysema distribution, as well as greater post-BD variations in air trapping, compared with patients with COPD. These findings suggest that CT densitometry characterizes ACOS as a distinct phenotype from COPD.
    No preview · Article · Jan 2016 · COPD Journal of Chronic Obstructive Pulmonary Disease
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    ABSTRACT: The immune costimulatory molecule B7-H3 has been shown to be involved in the regulation of murine bone formation. However, the role of B7-H3 in bone metabolic diseases remains unknown. In our study, matrix metalloproteinase 2 (MMP-2) and souble B7-H3 (sB7-H3) were found to be correlatively up-regulated in the sera of osteoporosis patients. Furthermore, our results showed that MG63 cells treated with MMP-2 inhibitors produced lower amounts of sB7-H3 while cells with recombinant MMP-2 had an increased membrane B7-H3 (mB7-H3) shedding. Therefore, elevated MMP-2 levels resulted in an elevation of serum sB7-H3 and reduction of osteoblastic mB7-H3. B7-H3 knockdown in MG63 cells significantly decreased osteoblastic markers and substantially decreased the number of mineralized nodules after 21days. Thus, B7-H3-deficient MG63 cells exhibited impaired bone formation. These results suggest that mB7-H3 is required for the later phases of osteoblast differentiation and that MMP-2/B7-H3 plays a negative regulatory role in osteoporosis.
    Preview · Article · Nov 2015 · Clinical Immunology
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    ABSTRACT: Background and objectiveIt is not known whether patients with chronic obstructive pulmonary disease (COPD) have a different exercise capacity with (CB+) or without accompanying chronic bronchitis (CB−).Methods We conducted spirometry, a 6-min walk distance test and cardiopulmonary exercise test in 50 age-matched healthy control subjects, 45 COPD patients without CB (CB−) and 37 COPD patients with CB (CB+). A multiple regression model was established to identify factors independently associated with peak oxygen consumption ().ResultsPatients with and without CB had similar forced expiratory volume in 1 s (FEV1). CB+ patients had a lower . CB+ and CB− participants had similar increases in tidal volume at peak exercise; however, CB+ patients had an increased respiratory rate (RR). These patients reached the peak value for ratio of end-expiratory lung volume to total lung capacity (TLC) at a lower work load. A stepwise multiple linear regression analysis identified chronic bronchitis, FEV1, diffusing capacity for carbon monoxide, the ratio of residual volume to TLC and serum tumour necrosis factor-α as independent predictors of peak .ConclusionsCB significantly lowers exercise capacity in COPD patients because of dynamic hyperinflation during exercise. The accelerated dynamic hyperinflation may contribute to increased airway and systemic inflammation in COPD patients.
    No preview · Article · Apr 2015 · Respirology
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    ABSTRACT: Purpose Muscle injury exists in the upper airway in subjects with obstructive sleep apnea (OSA). However, whether this injury is homogeneous remains unclear. The objective of this study was to measure neuromuscular changes in the anterior and posterior genioglossus muscle (GG) in subjects with OSA using motor unit potentials (MUPs). Methods Male subjects underwent diagnostic sleep studies to obtain apnea/hypopnea index (AHI) and lowest oxygen saturation (LSAT) data. MUPs of the anterior and posterior GG were recorded. Mean values and outliers of MUP parameters were analyzed. Results Seventeen subjects with severe OSA (AHI, 72.3 ± 16.7 events/h) and nine control subjects (AHI, 3.7 ± 0.4 events/h) were enrolled in this study. In the control group, the MUP values of amplitude, duration, area, area/amplitude, and size index did not differ significantly between the posterior and anterior GG. In the OSA group, these values were significantly higher in the posterior than anterior GG (amplitude: P = 0.011; duration: P = 0.007; area: P = 0.008; size index: P = 0.033). Posterior GG values were greater in the OSA group than in the control group, whereas anterior values were similar. A larger proportion of subjects with OSA had outlying values for the posterior GG than anterior GG (52.9 vs. 11.8 %; P
    No preview · Article · Aug 2014 · Sleep And Breathing
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    ABSTRACT: Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality worldwide and has been the leading cause of death in China. Patients with COPD have significant decrements in their health-related quality of life (HRQL). It is necessary to identify the factors involved in worsening HRQL in order to improve the HRQL of COPD patients. However, evidence from longitudinal studies is limited. The aim of the study was to evaluate the determinants of the deterioration of HRQL in patients with COPD. At baseline, a total of 491 patients with stable COPD received comprehensive assessments, including psychosocial and clinical variables, six minutes walk distance (6MWD), dyspnea grade measured by the 5-grade Medical Research Council (MRC) dyspnea scale, anxiety and depression measured by the hospital anxiety and depression scale and HRQL measured by St. George's Respiratory Questionnaire (SGRQ). Patients were then monitored monthly for 12 months to document COPD exacerbations. At the end of the study period, the SGRQ values were reassessed. A 1-year change in SGRQ total score ≥4 was defined as a deterioration of the HRQL and as the outcome. A total of 450 patients completed the 12-month follow-up and were analyzed in the present study. The age (mean±SD) was (65.0±10.6) years and 68.7% of subjects were men. The deterioration of the HRQL was 26.4%. In multivariate Logistic regression, independent and graded associations were found between the baseline MRC dyspnoea grade and the deterioration of HRQL (P = 0.012), OR 3.03 (95% CI 1.11-8.24) for patients with MRC dyspnoea grade ≥4 versus patients with MRC dyspnoea grade = 1. Similarly, the number of exacerbations during the follow-up was independently and gradually increased with the deterioration of HRQL (P < 0.001), OR 3.03 (95% CI 1.9-5.6) for the participants with exacerbations ≥3 versus participants with no exacerbation. The 6MWD evaluated by quartiles was negatively associated with the deterioration of HRQL with borderline statistical significance. MRC dyspnea grade and the number of exacerbations impair the HRQL of patients with COPD.
    No preview · Article · Jan 2014 · Chinese medical journal
  • Li Ling · Huaping Huang · Lingyun Zhu · Ting Mao · Qian Shen · Hong Zhang
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    ABSTRACT: To compare the antepartum and postpartum plasma concentrations of endothelial microparticles (EMPs) in patients with pre-eclampsia with those of healthy control subjects with normal pregnancies. Plasma concentrations of EMPs were measured using specific antibody labelling and flow cytometry prior to delivery by caesarean section (antepartum), and again at 24 h and 72 h postpartum. The correlations between EMP concentration and mean arterial pressure (MAP), and between EMP concentration and 24-h urine protein were analysed. A total of 59 patients with pre-eclampsia and 60 healthy control subjects participated in the study. The antepartum plasma EMP concentration was significantly higher in patients with pre-eclampsia than in healthy control subjects with normal pregnancies (2863.5 ± 1543.1 versus 1703.0 ± 592.2 EMPs/ml, respectively); similar findings were observed at 24 h postpartum (1836.7 ± 1153.8 versus 1421.8 ± 760.2 EMPs/ml, respectively). There was no significant difference between the two groups at 72 h postpartum. The antepartum plasma EMP concentration in patients with pre-eclampsia demonstrated a significant positive correlation with MAP (r = 0.716) and with 24-h urine protein (r = 0.770). Plasma EMP concentration might serve as a biomarker to evaluate the severity of pre-eclampsia in the future.
    No preview · Article · Dec 2013 · The Journal of international medical research
  • Shaohua Wu · Hong Zhang · Jiwen Tian · Lifen Liu · Yun Dong · Ting Mao
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    ABSTRACT: Kisspeptin and its receptor GPR54 play a major role in trophoblast invasion, and progesterone-induced blocking factor (PIBF) is needed for maintaining pregnancy. The expression of kisspeptin/GPR54 and PIBF/progesterone receptor (PR) in trophoblasts and deciduas and the relationship between kisspeptin and PIBF were investigated in the same women with recurrent spontaneous abortion (RSA). Trophoblastic and decidual tissues were collected from 32 RSA women who miscarried a genetically normal fetus, and 35 women who had voluntary abortion. Kisspeptin, GPR54, PIBF and PR were investigated using immunohistochemistry. Kisspeptin, GPR54 and PIBF expressions in syncytiotrophoblasts and cytotrophoblasts were decreased in RSA women as compared to controls (P<0.05). Kisspeptin, PIBF and PR expressions in deciduas were significantly decreased in RSA women as compared to controls (P<0.01). GPR54 expression in deciduas nearly showed no difference between the RSA group and the control group (P=0.958). Kisspeptin and PIBF expressions in syncytiotrophoblasts, cytotrophoblasts and deciduas were correlated with each other in the RSA group (Kappa=0.602, P=0.001; Kappa=0.590, P=0.001; Kappa=0.392, P=0.011). These data support the hypothesis that decreased kisspeptin and PIBF expressions in trophoblasts and deciduas are associated with RSA.
    No preview · Article · Oct 2013 · Pathology - Research and Practice
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    ABSTRACT: Chronic obstructive pulmonary disease (COPD) is a complex human disease influenced by multiple genes and environmental factors. The SERPINE2 gene has recently been demonstrated to be associated with COPD onset in a non-East Asian population. In this study, we genotyped 20 single nucleotide polymorphisms (SNPs) in SERPINE2 from 310 cases and 203 controls, all of which belong to the Han from North China. Genotype frequencies were compared between the cases and the controls and analyzed for statistical significance. Two SNPs (rs729631 and rs975278), which are in strong linkage disequilibrium (LD) and locate in block 1 on the LD map of our samples, showed significant association both with the risk of COPD and decline in baseline lung function after Bonferroni correction (P < 0.05). This study provides further evidences for SERPINE2 gene as a COPD susceptible gene, and block 1 of SERPINE2 appears to be the genetic variant region that affects the Han Chinese.
    No preview · Article · May 2011 · Molecular Biology Reports
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    ABSTRACT: Anxiety and depression are two of the commonest and most modifiable comorbidities of chronic obstructive pulmonary disease (COPD) and have an independent effect on health and prognosis. FEV1% has been shown to be a poor predictor of anxiety and depression. The body mass index, degree of airflow obstruction, dyspnea, and exercise capacity (BODE) index is a multidimensional assessment system which may predict health outcome in COPD patients. The purpose of this study was to investigate the predictive validity of the BODE index for anxious and depressive symptoms in COPD patients. This was a multicenter prospective cross-sectional study in 256 patients with stable COPD. Anxious and depressive symptoms were assessed using the Hospital Anxiety and Depression Scale (HADS). The relationships between anxiety, depression and potential predictors (including the BODE index) were analyzed by a binary Logistic regression model. Subjects who were anxious and depressive walked a shorter six-minute walking distance (6MWD), had more dyspnea, a higher BODE index, and lower health-related quality of life (P < 0.01). Anxiety and depression score was significantly correlated with BODE index, respectively (r = 0.335, P < 0.001; r = 0.306, P < 0.001). The prevalence of anxiety and depression increased with BODE stage increasing (P < 0.05). On the basis of binary Logistic regression, the BODE index was a good and independent predictor of anxiety and depression because it comprised dyspnea and 6MWD, which were shown to be the main determinants. The predictive validity of the BODE index for anxiety and depression was demonstrated. We propose that the BODE index should be included in assessment of COPD severity.
    No preview · Article · Jul 2010 · Chinese medical journal
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    ABSTRACT: Endometriosis is a common gynecological disease. This study aimed to screen proteins that were expressed differently in patients with endometriosis versus normal controls using proteomic techniques, surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS). Protein chip SELDI-TOF-MS combines the advantages of microarray and mass spectrometry, and can screen latent markers in sera of patients with endometriosis. Serum samples from patients and normal volunteers were analyzed by SELDI-TOF-MS. After comparing the serum protein spectra of 36 patients with 24 normal controls, 24 differently expressed potential biomarkers (P < 0.01) were identified. Using Biomarker Pattern software, we established a tree model of the 60 serum protein spectra. When using the three biomarkers to classify the samples, the sensitivity for diagnosing endometriosis was 91.7%, specificity was 95.8%, and coincidence rate was 93.3%. Then we used serum samples from 12 patients and 8 normal controls to validate the tree model and report the sensitivity for diagnosing endometriosis was 91.7%, specificity was 75%, and coincidence rate was 85%. SELDI-TOF-MS may be a useful tool in high-risk population screening for endometriosis. The identification and application of the biomarkers need to further study.
    No preview · Article · Feb 2009 · Chinese medical journal
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    ABSTRACT: To evaluate the value of human epididymis secretory protein 4 (HE4) and CA(125) in the diagnosis of ovarian malignancy. HE4 and CA(125) in the serum specimens of malignant ovarian tumor group (30 cases), benign ovarian diseases (110 cases; 45 benign ovarian tumor, 57 endometriotic diseases and 8 pelvic inflammation were included) and healthy women group (137 cases) were assayed double blindly. The levels and the diagnosis efficiency of the HE4 and CA(125) were analyzed. (1) The median levels of HE4 and CA(125) were significantly higher in malignant ovarian tumor group (244 pmol/L and 601 kU/L respectively) than those of the benign ovarian diseases group (32 pmol/L and 22 kU/L respectively) and healthy women group (32 pmol/L and 11 kU/L respectively) (P = 0.000 - 0.029). The median levels of CA(125) were also higher in endometriotic diseases and pelvic inflammation groups (53 and 41 kU/L respectively) than those of benign ovarian tumor group and healthy women group (12 and 11 kU/L respectively; P = 0.000 - 0.031). (2) The positive rate of HE4 was lower than that of CA(125) in malignant ovarian tumor group (P = 0.036). HE4 was negative in benign diseases and healthy women groups. But the positive rates of CA(125) were 56.1% and 5/8 respectively in endometriotic diseases and pelvic inflammation groups and there were significant differences compared with HE4 (P = 0.000). (3) The HE4 assay had advantage over the CA(125) assay in receiver operating characteristic-area under the curve (ROC-AUC) and sensitivity with a specificity of 100% when ovarian malignancy was compared with controls having benign diseases and healthy women, benign tumor or benign diseases groups respectively. The CA(125) assay had advantage over the HE4 assay in ROC-AUC and sensitivity with the same specificity when ovarian cancers were compared with controls having healthy women group. (4) Combined assay of HE4 and CA(125) was better than CA(125) alone when ovarian malignancy was compared with controls having any group. (5) Combined assay was better than HE4 alone in ROC-AUC and sensitivity with the same specificity when ovarian cancers were compared with controls having benign diseases and healthy women or healthy women groups. And combined assay was lower in the ROC-AUC and the sensitivity with specificity of 100% than HE4 when ovarian cancers were compared with controls having benign tumors or benign diseases groups respectively. (6) The diagnosis efficiency of the HE4 assay at the level 86 pmol/L determined in ROC curve with controls having benign diseases and healthy women group and at the 95% reference level 50 pmol/L of healthy women or 150 pmol/L recommended by the kit respectively was compared. The sensitivity of 50 pmol/L was 73% higher than 150 pmol/L and 86 pmol/L, while the specificity and positive predictive value were lower (P = 0.002, P = 0.000). The specificity, accuracy and positive predictive value of HE4 assay at the set point of 150 pmol/L and 86 pmol/L were 100%, 96% and 96%. The set point of 86 pmol/L had advantage over 150 pmol/L at the sensitivity of diagnosis, 70% and 63% respectively. But the positive predictive value was 95% lower than 150 pmol/L, being 100%. There was no significant difference (P = 0.883, P = 0.883). The specificity of HE4 assay is higher than CA(125) assay in the diagnosis of ovarian cancer and HE4 combined with CA(125) assay can improve the diagnoses. The set point of 150 pmol/L is advantageous for the accurate diagnosis, while the set point of 86 pmol/L is advantageous for the screening of malignant ovarian cancer.
    No preview · Article · Jan 2009 · Zhonghua fu chan ke za zhi
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    ABSTRACT: To evaluate the efficacy and tolerability of the combination of oxaliplatin, ifosfamide and epirubicin (IAP) in treatment of recurrent or platinum-resistant ovarian cancer patients. A total of 25 patients received the combined chemotherapy of ifosfamide (3 - 4 g/m(2)), epirubicin (50 - 60 mg/m(2)) and oxaliplatin (130 mg/m(2)). The cycles were repeated every 21 days. The efficacy and toxicity were evaluated in 21 patients who received more than 2 cycles of IAP chemotherapy. The overall response rate was 71%, with a complete response in 10 (48%), partial response in 5 (24%), stable disease in one (5%), and disease progression in 5 (24%). The median progression-free and overall survival time were 11 (1 to 33) months and 31 (1 to 71) months. While overall response rate was 60% in 10 patients with primary platinum resistant, and 88% in 8 patients with secondary platinum-resistant. Grade III - IV myelosuppression rate was 30%. The most common non-hematologic toxicity was perineurotoxicity (38%). The combination of oxaliplatin, ifosfamide and epirubicin appears to be effective for recurrent or platinum-resistant ovarian cancer patients as salvage chemotherapy and the toxicity is also tolerable. However, it needs to be evaluated by multiple clinical trials.
    No preview · Article · Nov 2008 · Zhonghua fu chan ke za zhi
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    ABSTRACT: 6B11 anti-idiotype minibody, a fusion protein, has been shown to mimic ovarian carcinoma associated antigen OC166-9. This study was designed to determine whether 6B11 anti-idiotype minibody-pulsed dendritic cells (DCs) can induce cytotoxic T cells against ovarian cancer cells. Monocytes were isolated from peripheral blood mononuclear cells collected from patients with epithelial ovarian carcinoma (n=10). The monocytes-derived immature DCs were stimulated by cytokines, and mature DCs were pulsed with 6B11 anti-idiotype-minibody or murine F(ab)'2 fragments. The proliferation of autologous T cells induced by DCs was determined by 3H-thymidine uptake. The cytotoxicity of DC-activated T cells against autologous carcinoma cells was determined by 51Cr-release assay. Purified T cells demonstrated strong proliferation following incubation with 6B11 anti-idiotype minibody-pulsed DCs in 4 of 10 patients. The specific cytotoxicity of purified T cells against autologous carcinoma cells was induced after stimulation with 6B11 anti-idiotype minibody-pulsed DCs in 5 of 10 patients with cytotoxic effects ranging from 25 to 95%. In contrast, isotype murine F(ab)'2 fragments-pulsed DCs did not induce T cell proliferation and cytotoxicity against the targets. Additionally, the cytotoxic effect was partially inhibited by anti-MHC class-I antibody indicating that the cytotoxic effects are antigen-specific. 6B11 anti-idiotype-antibody-pulsed DCs can induce T cell proliferation and T cell-mediated cytotoxicity against autologous ovarian tumor cells in vitro. The cytotoxic effects of T cells against autologous tumor cells are antigen-specific. These data implicate the rationale for the use of 6B11 anti-idiotype minibody as immunotherapy against ovarian carcinoma.
    Preview · Article · May 2007 · Gynecologic Oncology
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    Hong Zhang · Yidong Niu · Jie Feng · Huifang Guo · Xue Ye · Heng Cui
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    ABSTRACT: To use proteomic techniques, including two-dimensional electrophoresis (2-DE), Western blot, and mass spectrometry, to screen and identify proteins that were expressed differently in patients with endometriosis versus normal controls. First, we aimed to find a difference in the way serum and eutopic endometrial proteins were expressed in women with and without endometriosis. Second, we were interested in searching for endometriotic proteins, which were specifically recognized by sera from patients with endometriosis. Collaborative investigation in an academic research environment. Consenting women of reproductive age taking no medications and with laparoscopically proven endometriosis. Surgical excision of eutopic and ectopic endometrial biopsy and phlebotomization of patients with endometriosis and controls. Protein expression. Thirteen protein spots from serum correlated with 11 known proteins and 11 protein spots from endometrium correlated with 11 known proteins were found differently expressed between women with and without endometriosis. Some proteins may be cytoskeletons, and some may be involved in the regulation of cell cycle, signal transduction, or immunological function. Three proteins, which were identified as vimentin, beta-actin, and ATP synthase beta subunit, hybridized significantly differently between endometriosis sera and normal sera. The data help to establish a human endometriosis proteome database and broaden our understanding of the pathogenesis of endometriosis. Further study of the proteins identified herein will assist in the eventual development of new diagnoses and treatments for endometriosis.
    Preview · Article · Sep 2006 · Fertility and sterility
  • Hui-fang Guo · Jie Feng · Hong Zhang · Yu Yao · Hong-yan Cheng
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    ABSTRACT: To purify MAb183B2 corresponding antigen of ovarian carcinomas and study its physical and chemical characteristics. The strongest positive samples reacted with MAb183B2 were screened from ovarian cancer ascites with indirect enzyme linked immunosorbent assay (ELISA). Then the antigen was purified from ascitic fluid by affinity chromatography with MAb183B2. Nature of the purified antigen was examined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and western blot and its reactivity was determined after treatment with NaIO4, trypsin, pronase, neuraminidase, deglycolipid mixture and heating. Two dimensional electrophoresis combined with western blot was then used to isolate and identify the antigen from ovarian cancer cell line SKOV3. The reactivity of the antigen after treated by NaIO4, neuraminidase and deglycolipid mixture was still positive, while it was negative after treated by trypsin, pronase and heating. The antigen proved to be composed of two different subunits of 56,000 and 25,000 by SDS-PAGE, and MAb183B2 could blot the 56,000 band by western blot. The antigen from the SKOV3 cell line displayed microheterogeneity appearing as three spots over a pI range 5.3 approximately 5.8 at 56,000. The epitope of 183B2-antigen is at its peptide core. The antigen belongs to the Ig super family and might be a new ovarian carcinoma associated antigen.
    No preview · Article · Oct 2005 · Zhonghua fu chan ke za zhi
  • Hong Zhang · Yi-dong Niu · Jie Feng · Hui-fang Guo · Xue Ye
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    ABSTRACT: To find out markers of endometriosis. The two dimensional gel images of proteins extracted from eutopic endometrium from endometriosis patients and controls were analyzed by software Phoretix 2D,and the proteins expressed differently were identified primarily by query of data base. The proteins extracted from ectopic endometrium of ovarian endometriosis were transferred from two dimensional gel onto nitrocellulose membranes, followed by incubation with sera from women with and without endometriosis. Analyzed by MALDI-TOF-MS, the proteins hybridized differently were identified through their Peptide Mass Footprints. Having compared the reproducible two dimensional gel images of proteins from eutopic endometrium of women with and without endometriosis,we obtained 11 proteins expressed differently. Through Western Blot technique,we found three proteins hybridized differently which were identified as vimentin, beta-actin and ATP synthase beta subunit respectively. The protein expression spectra of eutopic endometrium from patients with endometriosis are significantly different from those of the controls, and the anti-endometrial autoantibodies against vimentin, beta-actin and ATP synthase beta subunit may be induced.
    No preview · Article · Sep 2005 · Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences
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    ABSTRACT: Immunotherapy of sensitizing dendritic cells (DCs) with antigen,protein,and frozen cancer cell has been widely used in treating various cancers. The 6B11 anti-idiotype-antibody,a fusion protein prepared by our research center,can mimic ovarian cancer-associated antigen OC166-9. This study was to induce T cell cytotoxicity against autologous tumor cells of patients with ovarian cancer by 6B11 anti-idiotype-antibody. Peripheral blood samples were collected from 10 patients with epithelial ovarian cancer,Monocytes were isolated and cultured to obtain DCs. Immature DCs were stimulated with 6B11 anti-idiotype-antibody (MINI-DC group); unpulsed DCs (unpulsed-DC group),mouse F(ab) '2 fragments pulsed DCs [F(ab)'2-DC group],and T cells alone (T group) were served as controls. Mature DCs were harvested. (3)H-thymidine ((3)H-TdR) incorporation approach was used to measure effect of DCs on stimulating auto-T cell proliferation. Cytotoxicity of DC-activated T cells against auto-tumor cells was measured with (51)Cr 6-h release test,tumor cell lines,SKOV3,HLE,and K562, were used as controls. In 4 cases,cpm value of (3)H-TdR incorporation,as symbol of auto-T cell proliferation, in MINI-DC group was significantly higher than those in control groups. In 5 cases,specific cytotoxicity effect of T cells on auto-tumor cells was observed in MINI-DC group at effect-target ratio of 20:1,the toxicity effect of T cells in MINI-DC group was 25%-100%,significantly higher than those in F(ab)'2-DC group (18%-40%), unpulsed-DC group (13%-43%),and T group (9%-58%). In 4 cases,the toxicity effect of T cells in MINI-DC group, at effect-target ratio of 20:1,on auto-tumor cells was 25%-100%, higher than those on SKOV3 cells (5%-51%),HLE cells (2%-38%),and K562 cells (2%-25%). Moreover,the toxicity effect of T cells in MINI-DC group on auto-tumor cells can be partially blocked by anti-MHC-I antibody,which indicated that the toxicity was antigen-specific. DCs loaded with 6B11 anti-idiotype antibody that mimic ovarian cancer antigen can induce antigen specific T cell cytotoxicity against auto-ovarian tumor cells in vitro.
    No preview · Article · Dec 2004 · Ai zheng = Aizheng = Chinese journal of cancer

Publication Stats

119 Citations
30.71 Total Impact Points


  • 2010-2015
    • Capital Medical University
      Peping, Beijing, China
  • 2013
    • Soochow University (PRC)
      Wu-hsien, Jiangsu Sheng, China
  • 2006-2009
    • Peking University People's Hospital
      Peping, Beijing, China
  • 2007
    • Peking University
      Peping, Beijing, China