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Zhao X, Zhang H, Xu R, Guo Y, Sun J, Wu N, Zhu C, Zhang Y, Li S, Gao Y, Liu G, Dong Q, Li J. P6237Impact of smoking on the lipoprotein subfractions in untreated patients with high risk. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhou B, Gao X, Zhao X, Guo Y, Zhu C, Wu N, Qing P, Gao Y, Li X, Liu G, Dong Q, Li J. P3647Predictive value of big endothelin-1 on cardiovascular events in patients with myocardial infarction younger than 35 years old. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhang H, Zhao X, Guo Y, Wu N, Zhu C, Zhang Y, Li S, Gao Y, Qing P, Li X, Liu G, Dong Q, Li J. P907Free fatty acids is a useful marker for predicting clinical outcomes in patients with stable coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Liu J, Wu W, Gu DH, Liu CY, Dong Q, Yao YL, Wang CS, Chen XP, Yang HX. [Neovascularization aggravated hepatic fibrosis in combined hypoxia NASH rat model]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2017; 25:517-522. [PMID: 29055990 DOI: 10.3760/cma.j.issn.1007-3418.2017.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To optimize the construction of combined hypoxia NASH rat model on the basis of preliminary work, and to explore the role of neovascularization in the process of hepatic fibrosis. Methods: 32 rats were divided randomly to four groups that were null control group(A group ), hypoxia group(B group), high fat diet group(C group ) and high fat diet plus hypoxia group (D group ),treated with null , Intraperitoneal injection of NaNO(2), high fat diet and high fat diet plus Intraperitoneal injection of NaNO(2) respectively. Every group was observed for 16 weeks, B and D group was treated with Intraperitoneal injection of NaNO(2) 20 mg/kg.d at the laster 8 weeks. Liver histology NASH activity score(NAS) and Fibro score(FibroS), biochemical index were detected in this combined hypoxia NASH rat model(D group), meanwhile the changes of HIF1α, inflammatory factor and neovascularization were measured by ELISA, realtime PCR and immunohistochemistry. Results: Liver tissue NAS > 4 was seen in C and D group. D group showed NASH characteristics, including significantly steatosis at liver acinar 3 area(mostly a microvesicular type fat droplets mixed with macrovesicular type), hepatocyte balloon degeneration, obvious lobular inflammation, while fibrosis score increased significantly, including visible hepatic sinusoid fibrosis, fibrosis around portal vein, and bridging fibrosis in a considerable portion of the rats. Compared with C group, biochemical indicators of aspartate aminotransferase (AST), HIF1α, neovascularization-related VEGFA, VEGFR2 mRNA level increased obviously and the expression of immunohistochemistry VEGFR2, CD34 enhanced markedly in D group(p < 0.05). Conclusion: A combined hypoxia NASH rat model can be established throught feeding 16 weeks' high-fat diet then intraperitoneal injection of NaNO(2) 20 mg / kg.d at the laster 8 weeks, meanwhile chronic hypoxia can accelerate this combined hypoxia NASH model liver fibrosis process. In this process neovascularization promoted the formation of hepatic fibrosis in this model.
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Ren ZJ, Ren PW, Yang B, Liao J, Liu SZ, Lu DL, Wei X, Liu LR, Dong Q. Mean platelet volume, platelet distribution width and platelet count in erectile dysfunction: A systematic review and meta-analysis. Andrologia 2017; 49. [PMID: 28271535 DOI: 10.1111/and.12777] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2016] [Indexed: 02/05/2023] Open
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Wang S, Zhao J, Li X, Yang S, Wang X, Liu Y, Yang S, Dong Q. Numerical simulations on effects of ionic / nonionic surfactant on oil-water interface using dissipative particle dynamics. ASIA-PAC J CHEM ENG 2017. [DOI: 10.1002/apj.2070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dong Q, Liu X, Wang F, Xu Y, Liang C, Du W, Gao G. DYNAMIC CHANGES OF TRAb AND TPOAb AFTER RADIOIODINE THERAPY IN GRAVES' DISEASE. ACTA ENDOCRINOLOGICA-BUCHAREST 2017; 13:72-76. [PMID: 31149151 DOI: 10.4183/aeb.2017.72] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Context To analyze the dynamic changes of serum thyrotrophin receptor antibody (TRAb) and thyroid peroxidase antibody (TPOAb) in Graves' disease (GD) patients before and after radioactive iodine (RAI) treatment and to investigate if TRAb and TPOAb play a role in the occurrence of early hypothyroidism after 131I therapy for Graves' hyperthyroidism. Subjects and Methods A total of 240 patients newly diagnosed with GD were selected to study. A clinical and laboratory assessment was performed before and at 3, 6, and 12 months after 131I therapy. Chemiluminescent immunoassays were used to detect serum free triiodothyronine (FT3), free thyroxine (FT4), sensitive thyroid-stimulating hormone (TSH) and TPOAb concentration. Radio-receptor assay was used to measure serum TRAb concentration. According to the early onset of hypothyroidism in a year after RAI therapy, patients were divided into early hypothyroidism group (group A) and non-early hypothyroidism group (group B). Results In both groups, serum TRAb and TPOAb increased at 3 months, reached the highest level at 6 months and returned to the baseline at 12 months after RAI therapy. TRAb showed a significant difference between the two groups at 6 months (P<0.01). Serum TPOAb in group A was higher than that in group B before and at 3, 6, 12 months after RAI therapy (P<0.05). Conclusions Serum TRAb and TPOAb are closely related to the occurrence of the early hypothyroidism, and play an important role in judging prognosis after 131I treatment in Graves' disease.
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Song XM, Tan LC, Ma HY, Guo Y, Zhu L, Yi XQ, Gao JY, Yang RJ, Dong Q. Facile preparation of S-doped magnetite hollow spheres for highly efficient sorption of uranium(vi). Dalton Trans 2017; 46:3347-3352. [DOI: 10.1039/c7dt00209b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-Doped magnetite hollow spheres (S-doped MHS) were prepared, which exhibit fast and efficient sorption for uranium(vi).
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Sheng WW, Dong M, Liu ZR, Li YJ, Zhou JP, Dong Q. [Relationship and clinicopathological significance of Numb and epithelial-mesenchymal transition related proteins in human pancreatic cancer]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 2016; 54:929-934. [PMID: 27916037 DOI: 10.3760/cma.j.issn.0529-5815.2016.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the relationship and clinicopathological significance of Numb and epithelial-mesenchymal transition related proteins in human pancreatic cancer(PC). Methods: Sixty-three cases of pancreatic cancer tissues were obtained from department of gastrointestinal surgery in the First Hospital of China Medical University from January 2005 to December 2012, all samples were histopathologically proved to be adenocarcinoma. The expressions of Numb, E-cadherin and Vimentin proteins in 63 cases of pancreatic cancer specimens were detected by immunohistochemistry. Western blot and real-time PCR were used to examine the protein and mRNA levels in two pancreatic cancer cell lines. Pearson and chi-squared tests were used to analyze the relationship and clinicopathological characters with PC patients. Kaplan-Meier curve and log rank test were used to estimate the difference of PC patients' survival. Results: The positive rates of Numb, E-cadherin and Vimentin expressions were 46.0%, 41.3% and 28.6%, respectively. Numb expression was negatively associated with tumor size, differentiation and UICC stage(r=-0.310, P=0.010; r=-0.359, P=0.004; r=-0.228, P=0.020), while E-cadherin expression was negatively related with tumor differentiation(r=-0.316, P=0.012). In contrast, Vimentin expression was positively related with pancreatic cancer differentiation and lymph metastasis(r=0.264, P=0.036; r=0.274, P=0.030). Correlation analysis showed Numb had a positive association with E-cad expression(r=0.325, P=0.010), but had no association with Vimentin. Moreover, patients with co-expression of Numb and E-cadherin had a significantly better overall survival in Kaplan-Meier univariate analysis(P=0.046). Immunoblotting and real-time PCR showed that high Numb protein and mRNA levels in BxPC-3 cells were followed with high E-cadherin and low Vimentin expressions, whereas low Numb protein and mRNA levels in PANC-1 cells were followed with low E-cadherin and high Vimentin expressions, respectively. Conclusions: Numb has a positive relationship with E-cadherin in both pancreatic cancer tissues and cells.The interaction between them might participate in the initiation and development of epithelial-mesenchymal transition in pancreatic cancer.
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Hu X, Dong Q, Yang J, Zhang Y. Recognizing metal and acid radical ion-binding sites by integrating ab initio modeling with template-based transferals. Bioinformatics 2016; 32:3694. [PMID: 27899383 DOI: 10.1093/bioinformatics/btw637] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li S, Jiang L, Liu J, Hamblin L, Ang K, Chen H, Dong Q, He J. P-237NEW TUBELESS VIDEO-ASSISTED THORACOSCOPIC SURGERY APPROACH FOR SOLITARY PULMONARY NODULE. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang SH, Li S, Zhang Y, Xu RX, Zhu CG, Guo YL, Wu NQ, Qing P, Gao Y, Cui CJ, Dong Q, Sun J, Li JJ. Analysis of the association between plasma PCSK9 and Lp(a) in Han Chinese. J Endocrinol Invest 2016; 39:875-83. [PMID: 26894681 DOI: 10.1007/s40618-016-0433-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/20/2016] [Indexed: 01/04/2023]
Abstract
PURPOSE It has been reported that proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors can significantly reduce lipoprotein(a) [Lp(a)], and the mechanism for Lp(a) reduction remains unclear. Recently an interesting clinical research with a small sample showed a positive correlation between plasma PCSK9 and Lp(a) levels in diabetes. Here we aimed to use a relatively large sample to investigate whether such an association exists in Han Chinese. METHODS A total of 783 inpatients were consecutively enrolled and composed of 172 patients with type 2 diabetes mellitus (T2DM) and 611 non-T2DM subjects. Plasma PCSK9 level was measured by ELISA, and its association with Lp(a) was assayed by Spearman's correlation and multiple regression. Clinical and biochemical parameters were determined in all subjects studied. RESULTS No significant differences in PCSK9 and Lp(a) levels were found between T2DM and non-T2DM patients. PCSK9 level was not related to Lp(a) level either in T2DM or non-T2DM group in bivariate correlation and multiple linear regression analysis. Additionally, no association between the levels of PCSK9 and Lp(a) was found in well, poorly controlled T2DM patients or in T2DM patients with or without coronary artery disease (CAD). Besides, no difference was found among the PCSK9 values across tertiles of Lp(a) level. CONCLUSION We found no association of plasma PCSK9 levels with Lp(a) level in Han Chinese with or without T2DM, suggesting that Lp(a) reduction by PCSK9 inhibitors may not be achieved simply through PCSK9 pathway at least in Chinese.
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Cui Y, Lv S, Liu J, Nie S, Chen J, Dong Q, Huang C, Yang D. Chronic perfluorooctanesulfonic acid exposure disrupts lipid metabolism in zebrafish. Hum Exp Toxicol 2016; 36:207-217. [PMID: 27193966 DOI: 10.1177/0960327116646615] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Perfluorooctanesulfonic acid (PFOS), a ubiquitous contaminant, has been used in various industrial applications. Currently few studies have documented the effects of chronic PFOS exposure on lipid metabolism, especially in aquatic organisms. The present study defined the effects of chronic exposure to low level of PFOS on lipid metabolism in F0 adult zebrafish and F1 offspring. Our findings revealed a severe fatty degeneration in the liver of F0 males treated with 0.5 μM PFOS and significant ultrastructure changes associated with substance transport or metabolism in liver and intestines (abnormal mitochondria and endoplasmic reticulum, disordered arrangement of inner microvilli within intracellular canaliculus). To address the potential trans-generational effects of PFOS exposure, the early gene expression related to lipid metabolism was measured by real-time quantitative polymerase chain reaction in F1 derived from chronically exposed parental fish. The results indicated that lepa (leptin α), kiss1 (kisspeptins), xdh (xanthine dehydrogenases), and insr (insulin receptor) were significantly upregulated in F1 while dgat1b (diacylglycerol O-acyltransferase), hb9 (motor neuron/pancreas homeobox), and Apoa1 (apolipoprotein A-I) were downregulated. These findings provided evidence that PFOS chronic exposure adversely impacts lipid metabolism in both F0 and F1 and demonstrated the validity of using zebrafish as an alternative model for PFOS chronic toxicity screening.
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Gao Y, Zhu CG, Wu NQ, Guo YL, Liu G, Dong Q, Li JJ. [Study on the reliability of CardioChek PA for measuring lipid profile]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2016; 48:523-528. [PMID: 27318918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To evaluate the clinical correlation between the CardioChek PA analyzer (CCPA) and a clinical laboratory reference method to use for screening program purposes. METHODS Fasting blood samples were collected on 325 patients (age: 23-86 years). One venous sample was collected using a serum tube for the evaluation on a Beckman reference analyzer. A second venous sample was collected in a lithium heparin tube and was evaluated on the CCPA analyzer. Linear regression analyses and Bland-Altman method were performed for each measured analyte: total cholesterol (TC), high density lipoprotein-cholesterol (HDL-C), triglycerides (TG) and low density lipoprotein-cholesterol (LDL-C). RESULTS Our results demonstrated a good clinical agreement for TC, HDL-C, TG and LDL-C(97.0%, 92.9%, 92.4% and 83.7%)in comparison with the CCPA to the reference analyzer. The correlation coefficients were 0.875, 0.813, 0.910, 0.864, respectively. P values all < 0.001. There was no significant difference in the detection rate of hyperlipidemia in TC, HDL-C and LDL-C. CONCLUSION We have identified the pre-analytic phase as an important step to guarantee the quality of results and indicated that the CCPA is a reliable lipid point-of-care testing system that can be used for the application of clinical screening anywhere.
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Xi Z, Yao M, Li Y, Xie C, Holst J, Liu T, Cai S, Lao Y, Tan H, Xu HX, Dong Q. Guttiferone K impedes cell cycle re-entry of quiescent prostate cancer cells via stabilization of FBXW7 and subsequent c-MYC degradation. Cell Death Dis 2016; 7:e2252. [PMID: 27253416 PMCID: PMC5143372 DOI: 10.1038/cddis.2016.123] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 04/08/2016] [Accepted: 04/11/2016] [Indexed: 11/26/2022]
Abstract
Cell cycle re-entry by quiescent cancer cells is an important mechanism for cancer progression. While high levels of c-MYC expression are sufficient for cell cycle re-entry, the modality to block c-MYC expression, and subsequent cell cycle re-entry, is limited. Using reversible quiescence rendered by serum withdrawal or contact inhibition in PTEN(null)/p53(WT) (LNCaP) or PTEN(null)/p53(mut) (PC-3) prostate cancer cells, we have identified a compound that is able to impede cell cycle re-entry through c-MYC. Guttiferone K (GUTK) blocked resumption of DNA synthesis and preserved the cell cycle phase characteristics of quiescent cells after release from the quiescence. In vehicle-treated cells, there was a rapid increase in c-MYC protein levels upon release from the quiescence. However, this increase was inhibited in the presence of GUTK with an associated acceleration in c-MYC protein degradation. The inhibitory effect of GUTK on cell cycle re-entry was significantly reduced in cells overexpressing c-MYC. The protein level of FBXW7, a subunit of E3 ubiquitin ligase responsible for degradation of c-MYC, was reduced upon the release from the quiescence. In contrast, GUTK stabilized FBXW7 protein levels during release from the quiescence. The critical role of FBXW7 was confirmed using siRNA knockdown, which impaired the inhibitory effect of GUTK on c-MYC protein levels and cell cycle re-entry. Administration of GUTK, either in vitro prior to transplantation or in vivo, suppressed the growth of quiescent prostate cancer cell xenografts. Furthermore, elevation of FBXW7 protein levels and reduction of c-MYC protein levels were found in the xenografts of GUTK-treated compared with vehicle-treated mice. Hence, we have identified a compound that is capable of impeding cell cycle re-entry by quiescent PTEN(null)/p53(WT) and PTEN(null)/p53(mut) prostate cancer cells likely by promoting c-MYC protein degradation through stabilization of FBXW7. Its usage as a clinical modality to prevent prostate cancer progression should be further evaluated.
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Cao H, Wang C, Chai R, Dong Q, Tu S. Iron intake, serum iron indices and risk of colorectal adenomas: a meta-analysis of observational studies. Eur J Cancer Care (Engl) 2016; 26. [PMID: 26956572 DOI: 10.1111/ecc.12486] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2016] [Indexed: 11/29/2022]
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Gu X, Gao H, Wu A, Bandyopadhyay A, Dong Q, Sun LZ. Abstract P6-04-03: Transcriptome profiling reveals enrichment of luminal feature in aged basal cell population in murine mammary gland. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p6-04-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Aging is the number one risk factor for breast cancer development. Increasing evidence suggests the potential of mammary stem cells (MaSCs) and their progenitors to generate certain types of breast cancers through neoplastic transformation. Our previous study has shown increased percentage of MaSC-enriched basal cell population (Lin-CD49fhighCD24med) and increased MaSC frequency during aging in murine models. On the other hand, a recent study from another group showed an increased frequency of CD49fhigh cells in the human luminal population (CD227+) during aging, indicating possible aberrant expression of CD49f in the aged luminal cells. However, how these age-related luminal cells with basal markers are generated and how they contribute to potential breast cancer development remains unknown. Here we apply bioinformatics analysis on Next Generation Whole Transcriptome Sequencing data of MaSC-enriched basal cell population (Lin-CD49fhighCD24med) and luminal progenitor-enriched cell population (Lin-CD49flowCD24high) of both young (4 to 6 months) and old (26 to 31 months) mouse mammary gland to test the hypothesis that age-associated increase of basal cell population and MaSCs may be due to the gain of basal cell markers and features by luminal cells. By Gene Set Enrichment Analysis (GSEA) we found a significant loss of basal cell and basal mammosphere signatures and a significant enrichment of luminal cell and luminal mammosphere signature in the old basal cell population and mammospheres in comparison with the young basal cell population and mammospheres. The core enrichment luminal genes from GSEA are able to cluster the old MaSC-enriched basal cell population as well as mammospheres closer to the cluster of luminal population than to the young basal population. These analyses indicate that aging may be associated with an expansion of aberrant MaSCs with both basal and luminal markers in mice, which may be the precursors of certain types of breast cancer. We are now studying the potential function of the basal-like luminal cells in the aged basal population.
Citation Format: Gu X, Gao H, Wu A, Bandyopadhyay A, Dong Q, Sun L-Z. Transcriptome profiling reveals enrichment of luminal feature in aged basal cell population in murine mammary gland. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P6-04-03.
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Fan Z, Cui H, Yu H, Ji Q, Kang L, Han B, Wang J, Dong Q, Li Y, Yan Z, Yan X, Zhang X, Lin Z, Hu Y, Jiao S. MiR-125a promotes paclitaxel sensitivity in cervical cancer through altering STAT3 expression. Oncogenesis 2016; 5:e197. [PMID: 26878391 PMCID: PMC5154343 DOI: 10.1038/oncsis.2016.1] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/07/2015] [Accepted: 12/07/2015] [Indexed: 12/14/2022] Open
Abstract
Cervical cancer (CC) is one of the most common malignancies in women. Paclitaxel is the front-line chemotherapeutic agent for treating CC. However, its therapeutic efficacy is limited because of chemoresistance, the mechanism of which remains poorly understood. Here, we used microRNA (miRNA) arrays to compare miRNA expression levels in the CC cell lines, HeLa and CaSki, with their paclitaxel resistance counterparts, HeLa/PR and CaSki/PR. We demonstrate that miR-125a was one of most significantly downregulated miRNAs in paclitaxel-resistant cells, which also acquired cisplatin resistance. And that the upregulation of miR-125a sensitized HeLa/PR and CaSki/PR cells to paclitaxel both in vitro and in vivo and to cisplatin in vitro. Moreover, we determined that miR-125a increased paclitaxel and cisplatin sensitivity by downregulating STAT3. MiR-125a enhanced paclitaxel and cisplatin sensitivity by promoting chemotherapy-induced apoptosis. Clinically, miR-125a expression was associated with an increased responsiveness to paclitaxel combined with cisplatin and a more favorable outcome. These data indicate that miR-125a may be a useful method to enable treatment of chemoresistant CC and may also provide a biomarker for predicting paclitaxel and cisplatin responsiveness in CC.
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Bouamar H, Zhang F, Gu X, Dong Q, Sun LZ. Abstract P1-06-04: Bisphenol A treatment induces hyperplasia in primary and stem cell-generated mammary glands from pregnant mice. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-06-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Breast cancer is a commonly diagnosed cancer of pregnancy. However, how endogenous and exogenous endocrine factors may contribute to the development of pregnancy-associated mammary tumorigenesis is not clear. There is growing evidence that mammary stem cells (MaSCs) may initiate neoplastic transformation when dysregulated in mouse models. We investigated the effect of the environmental endocrine disruptor bisphenol A (BPA) on mouse mammary gland morphology, epithelial cell composition, pre-neoplastic lesions, and the regenerative function of MaSCs. Pregnant FVB mice with GFP transgene on Day E8.5 were implanted with osmotic pumps that constantly release BPA at 0, 25 or 250 ng/kg/day for 28 days and the mice were euthanized one month after weaning. In agreement with the literature, we observed an abnormality of the morphology of the mammary gland after BPA treatment characterized by higher duct density and abnormal secondary and tertiary branching. Quantification of percent hyperplastic mammary ducts in H&E-stained tissue slides revealed a significant increase of ducts with hyperplastic lesions after BPA treatment, particularly with the low dose. To investigate the effects of BPA treatment on MaSCs, we used enzyme digestion to isolate the CD24hi/CD49f+ luminal epithelial cells (also termed as colony forming cell or CFC) and the CD24+/CD49fhi basal epithelial cells (also termed as mammary repopulating unit or MRU) from mammary gland tissues by FACS and found no significant difference in percent of luminal or basal cell population after BPA treatment. Because the basal cells are enriched with MaSCs that can form mammospheres in suspension culture and subsequently form solid 3D organoids when cultured in Matrigel, we transplanted the solid 3D organoids into cleared mammary fat pads of syngeneic FVB mice and immune-compromised nude mice to examine how BPA treatment might alter MaSC function. Significantly, similar to the results from the primary mammary glands, the regenerated mammary glands by MaSCs from mice treated with the low dose of BPA showed increased duct density, secondary and tertiary branching, and a significantly greater number of hyperplastic lesions. Taken together, our study demonstrated that BPA exposure at very low dose could induce pre-neoplastic lesions in the mammary gland of pregnant mice, apparently by directly targeting MaSCs and implicates BPA as an exogenous endocrine factor that may promote pregnancy-associated mammary tumorigenesis.
Citation Format: Bouamar H, Zhang F, Gu X, Dong Q, Sun L-Z. Bisphenol A treatment induces hyperplasia in primary and stem cell-generated mammary glands from pregnant mice. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-06-04.
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Dong Q, Chen XY, Li GM. Effect of transcription factor ZBTB20 on mouse pituitary development. GENETICS AND MOLECULAR RESEARCH 2015; 14:17622-9. [PMID: 26782407 DOI: 10.4238/2015.december.21.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pituitary, a critical component in the neuroendocrine system, plays an indispensable role in the regulation of body growth. The transcriptional factor ZBTB20 is widely expressed in brain tissues and participates in hippocampal development; however, the detailed molecular mechanism remains unknown. Therefore, the aim of this study was to investigate the effect of ZBTB20 on mouse pituitary development and related mechanisms in ZBTB20 gene knockout mice. The expressional profiles of ZBTB20 in various neuroendocrinal cells during the different developmental stages (from E10 to P0) were described by immunofluorescence staining. A ZBTB20 gene knockout mouse model was then generated. Real-time polymerase chain reaction and western blotting assays were used to detect the levels of five hormones: growth hormone (GH), prolactin (PRL), luteinizing hormone (LH), follicle-stimulating hormone (FSH), and thyroid-stimulating hormone (TSH). ZBTB20 protein expression was identified from E14 until birth. A majority of the pituitary endocrinal cells were ZBTB20-positive. In ZBTB20 knockout mice, the level of GH decreased by half and PRL expression was eliminated. No significant change was observed in the other three hormones (LH, FSH, and TSH). ZBTB20, an important transcriptional factor in pituitary development, is mainly responsible for the terminal differentiation of prolactin-secreting cells, thereby regulating the secretion of the pituitary hormones.
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Gao Q, Chen CF, Dong Q, Hou L, Chen X, Zhi YL, Li X, Lu HT, Zhang HY. Establishment of a neuroblastoma mouse model by subcutaneous xenograft transplantation and its use to study metastatic neuroblastoma. GENETICS AND MOLECULAR RESEARCH 2015; 14:16297-307. [PMID: 26662423 DOI: 10.4238/2015.december.8.20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to establish a metastatic human neuroblastoma (NB) mouse model by xenograft in order to study the metastatic mechanisms of NB. A human NB cell line was obtained from a 5-year-old patient and cultured in vitro. A suspension of these cells was subcutaneously inoculated into nude mice at the right flank next to the forelimb. The biological characteristics of the developed subcutaneous and metastatic tumors were analyzed by hematoxylin and eosin staining. The expression of the tumor marker neuron-specific enolase was determined by immunohistochemistry, and the invasive ability of metastatic tumors was examined by a Matrigel invasion assay. DNA microarray analyses were performed to examine the metastasis-related gene expression. Our results showed that tumors grew in 75% of the mice injected with NB cells and the rate of metastasis was 21%. The xenograft tumors retained the morphological and biological characteristics of the NB specimen from the pediatric patient. Neuron-specific enolase was highly expressed in both subcutaneous and metastatic tumors. The metastatic tumor cells possessed a higher invasive capability than the primary NB cells. The expression of 25 metastasis-related genes was found to be significantly altered in metastatic tumors compared to primary tumors, including RECK, MMP2, VEGF, MMP3, and CXCL12. In conclusion, we successfully established a human NB xenograft model with high tumor-bearing and metastatic rates in nude mice, providing an ideal animal model for the in vivo study of NB.
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Li S, Xu RX, Zhang Y, Guo YL, Zhu CG, Liu G, Dong Q, Li JJ. Relation of resistin to proprotein convertase subtilisin-kexin type 9 levels in coronary artery disease patients with different nutritional status. J Endocrinol Invest 2015; 38:1291-9. [PMID: 26003826 DOI: 10.1007/s40618-015-0310-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/10/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the association of resistin with proprotein convertase subtilisin-kexin type 9 (PCSK9) levels, another novel regulator of atherosclerosis, in the condition of coronary artery disease (CAD). RESEARCH DESIGN AND METHODS We prospectively enrolled a total of 356 consecutive stable CAD patients who were not treated with lipid-lowering drugs in the present study. The baseline clinical characteristics were collected. Plasma PCSK9 and resistin levels were determined by ELISA. The relationship between plasma PCSK9 and resistin levels was investigated. RESULTS Overall, plasma resistin exhibited a positive nonparametric correlation with PCSK9 levels (r = 0.123, p = 0.02). When the patients were classified into groups based on body mass index (BMI), the resistin correlated significantly to the PCSK9 levels in patients with BMI < 25 kg/m(2) (r = 0.162, p = 0.026) but not in patients with BMI ≥ 25 kg/m(2) (r = 0.087, p = 0.205). Multivariate regression analysis corroborated the relation between the PCSK9 and an elevated resistin level in patients with BMI < 25 kg/m(2) independently of traditional parameters including age, sex, BMI, smoking, family history of CAD, systolic blood pressure, glucose, low density lipoprotein cholesterol, white blood cell, neutrophil to lymphocyte ratio, and high-sensitive C-reactive protein. CONCLUSIONS Plasma resistin was positively related to PCSK9 levels in CAD patients with normal weight, suggesting that the circulating resistin might represent a link with PCSK9 level variations in CAD progression of normal body weight.
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Cheng J, Dong Q, Zeng X, Yuan Z. XRCC3 High Expression Predicts Poor Response to Chemoradiation Therapy for Esophageal Squamous Cell Carcinoma and Protects Cells From Apoptosis Induced by Radiation Through Maintaining Telomere Stability. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Meng M, Wang H, Zaorsky N, Zhao X, Wu Z, Jiang B, Song Y, Zhuang H, Li F, Zhao L, Wang P, Yuan Z, Dong Q. Clinical Evaluation Stereotactic Radiation Therapy for Recurrent or Second Primary Mediastinal Lymph Node Metastases Originating From Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yuan Z, Meng M, Wu Z, Dong Q, Wang H, Zhao L, Ying G, Wang P. Stereotactic Body Radiation Oncology Exert Anti-Tumor Effect via RIP3-Dependent Necroptosis in Non-Small Cell Lung Cancer Cells. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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