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Zhu J, Cao JF, Zhang T, Li TY, Li XW, Shen W. Multilocus sequence typing for Candida albicans strains from the intestinal tract of patients with cirrhosis. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2018; 22:6063-6071. [PMID: 30280792 DOI: 10.26355/eurrev_201809_15944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Multilocus sequence typing (MLST) was applied to investigate the genetic diversity of Candida albicans in the intestinal tract of cirrhosis patients. PATIENTS AND METHODS We used CHROM agar Candida medium to obtain 105 Candida sp. isolates from fecal samples (276 subjects), including 63 isolates from the cirrhosis group (141 subjects) and 42 isolates from the healthy control group (135 subjects). RESULTS Among the 105 Candida strains isolated, 60 strains were identified as Candida albicans. Patients with cirrhosis had significantly higher rates of colonization by Candida sp. (44.68% vs. 31.11%, p < 0.05) and C. albicans (27.66% vs. 15.56%, p < 0.05) relative to healthy controls. In the cirrhosis group, the rate of colonization further increased with disease progression and antibiotic treatment (p < 0.01). Sixty C. albicans isolates were analyzed by MLST. Fifty diploid sequence types (DST) were observed, and 26 new DSTs and 3 novel alleles were found. The majority of isolates were distributed among three clades, clade 8 (31.67%), clade 14 (15.00%) and clade 18 (21.67%). Among 39 strains from the cirrhosis group, 16 strains (41.02%) belonged to clade 8, while only 3 strains (14.29%) from healthy group belonged to clade 8 (p < 0.05). In addition, concatenated sequences of the 7 housekeeping gene fragments were analyzed for all the different DSTs in clade 8 to evaluate the loss of heterozygosity (LOH), which indicates C. albicans microvariation in the gut of cirrhosis patients. CONCLUSIONS This study suggests that cirrhosis disease progression and antibiotic treatment is associated with increased colonization by Candida sp. and C. albicans. We are the first to provide MLST-based genotype profiles for C. albicans Guizhou China, and to identify clade 8 as the potential main clade of C. albicans colonization in the gut of cirrhosis patients.
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Feng J, Shen B, Jiang H, Wang L, Qian J, Shu Y, Chen P, Mao G, Liu B, Zhang X, Liu C, Wu J, Li X, Cai W, Shen W, Wang Q, He J, Hua D, Zhang Z, Zhang Y. Identification of patients who benefit from apatinib in advanced gastric cancer: Data derived from a real-world study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Chang J, Hu Z, Ji D, Chuai S, Shen W, Cao J, Wang J, Wu X. JCSE01.11 Dynamic ctDNA Monitoring Revealed Novel Resistance Mechanisms and Response Predictors of Osimertinib Treatment in East Asian NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chang J, Hu Z, Ji D, Chuai S, Shen W, Cao J, Wang J, Wu X. P2.01-16 Dynamic ctDNA Monitoring Revealed Novel Resistance Mechanisms and Response Predictors of Osimertinib Treatment in East Asian NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zheng Y, Bi J, Hou MY, Shen W, Zhang W, Ai H, Yu XQ, Wang YF. Ocnus is essential for male germ cell development in Drosophila melanogaster. INSECT MOLECULAR BIOLOGY 2018; 27:545-555. [PMID: 29732657 DOI: 10.1111/imb.12393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ocnus (ocn) gene encodes a protein abundant in the testes, implying its role in testis development. When Drosophila melanogaster is infected with the endosymbiont wMel Wolbachia, which affects the spermatogenesis of its hosts, ocn is downregulated in the third-instar larval testes, suggesting a role of ocn in spermatogenesis. In this study, we knocked down ocn in the testes and found that the hatch rates of embryos derived from ocn-knockdown males were significantly decreased, and 84.38% of the testes were much smaller in comparison to controls. Analysis of the smaller testes showed no germ cells but they had an extended hub. Using RNA-sequencing (RNA-Seq), we identified 69 genes with at least a twofold change (q-value < 5%) in their expression after ocn knockdown; of these, eight testes-specific and three reproduction-related genes were verified to be significantly downregulated using quantitative reverse transcription-PCR. Three genes (orientation disruptor, p24-2 and CG13541) were also significantly downregulated in the presence of Wolbachia. Furthermore, 98 genes were not expressed when ocn was knocked down in testes. These results suggest that ocn plays a crucial role in male germ cell development in Drosophila, possibly by regulating the expression of multiple spermatogenesis-related genes. Our data provide important information to help understand the molecular regulatory mechanisms underlying spermatogenesis.
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Simunovic MP, Shen W, Lin JY, Protti DA, Lisowski L, Gillies MC. Optogenetic approaches to vision restoration. Exp Eye Res 2018; 178:15-26. [PMID: 30218651 DOI: 10.1016/j.exer.2018.09.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/16/2018] [Accepted: 09/07/2018] [Indexed: 10/28/2022]
Abstract
Inherited retinal disease (IRD) affects about 1 in 3000 to 1 in 5000 individuals and is now believed to be the most common cause of blindness registration in developed countries. Until recently, the management of such conditions had been exclusively supportive. However, advances in molecular biology and medical engineering have now seen the rise of a variety of approaches to restore vision in patients with IRDs. Optogenetic approaches are primarily aimed at rendering secondary and tertiary neurons of the retina light-sensitive in order to replace degenerate or dysfunctional photoreceptors. Such approaches are attractive because they provide a "causative gene-independent" strategy, which may prove suitable for a variety of patients with IRD. We discuss theoretical and practical considerations in the selection of optogenetic molecules, vectors, surgical approaches and review previous trials of optogenetics for vision restoration. Optogenetic approaches to vision restoration have yielded promising results in pre-clinical trials and a phase I/II clinical trial is currently underway (ClinicalTrials.gov NCT02556736). Despite the significant inroads made in recent years, the ideal optogenetic molecule, vector and surgical approach have yet to be established.
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Zhou YP, Wu R, Shen W, Yu HH, Yu SJ. [Comparison of effects of oleic acid and palmitic acid on lipid deposition and mTOR / S6K1 / SREBP-1c pathway in HepG2 cells]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2018; 26:451-456. [PMID: 30317760 DOI: 10.3760/cma.j.issn.1007-3418.2018.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effects of oleic acid and palmitic acid on lipid deposition and mTOR/S6K1/SREBP-1c pathways in HepG2 cells. Methods: The model of steatosis was established with induction of oleic acid and palmitic acid and was intervened by rapamycin. The changes in lipid droplets were observed after staining the cells with oil Red O. Intracellular triglyceride (TG) contents in cells were measured by TG kit. mTOR, S6K1, and SREBP-1c mRNA expression levels were detected using QRT-PCR. Western blot was used to determine protein expression levels of mTOR, S6K1 and SREBP-1c. Results: Both fatty acids increased lipid droplets in HepG2 cells. Fatty degeneration with elevated TG occurred with significant changes in oleic acid group lipids. Rapamycin alleviated lipid deposition caused by oleic acid and palmitic acid and inhibited their induction of increased expression of mTOR, S6K1, and SREBP-1c. QRT-PCR and Western blot results showed that mRNA and protein expressions of mTOR, S6K1, and SREBP-1c in oleic acid and palmitic acid group were significantly higher than the control group (P < 0.05). The increase was more pronounced in the palmitic acid group (P < 0.05); however, after rapamycin intervention, the expression of mRNA and protein in the three groups were significantly lower (P < 0.05), and the change in palmitic acid group was more pronounced (P < 0.05). Conclusion: Oleic acid and palmitic acid can induce lipid deposition in HepG2 cells and increase expression of every component of mTOR/S6K1/SREBP-1c pathway; however, Oleic acid-induced lipid deposition is more pronounced, and the mTOR, S6K1, and SREBP-1c pathway change is more obvious in palmitic acid. Rapamycin has high potent inhibitory effect on palmitic acid-induced lipid deposition. These results specify that lipid synthesis involved in the mTOR/S6K1/SREBP-1c pathways are mainly associated to palmitic acid in HepG2 cells, whereas other signaling pathway may mediate oleic acid-induced lipid synthesis.
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Lin Y, Shen W, Liu Y, Wang Q, Chen Q, Fang Z, Chi W, Gan X, Liu YZ. Visual preconditioning reduces emergence delirium in children undergoing ophthalmic surgery: a randomised controlled trial. Br J Anaesth 2018; 121:476-482. [PMID: 30032888 DOI: 10.1016/j.bja.2018.03.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 03/11/2018] [Accepted: 04/25/2018] [Indexed: 10/16/2022] Open
Abstract
BACKGROUND Emergence delirium is a common complication in children, especially in preschool children undergoing ophthalmic surgery. The aim of the study was to investigate the effects of visual preconditioning (application of an eyepatch over the eye to be operated for ≥3 h the day before surgery) on emergence delirium after ophthalmic surgery under sevoflurane anaesthesia. METHODS One hundred and seventy-nine children undergoing unilateral cataract surgery, aged 3-7 yr, were involved in this prospective, blinded, randomised study. Subjects were randomised to receive visual preconditioning (Group P, n=89) or to receive programmed explanation the day before surgery (Group C, n=90). The primary outcome was incidence of emergence delirium evaluated by the paediatric anaesthesia emergence delirium (PAED) scale. The secondary outcomes included emergence time and post-anaesthesia care unit (PACU) stay time. RESULTS Children in Group P had a significantly lower incidence of emergence delirium than those in Group C [16.9% vs 44.4%, odds ratio (OR) 4.0, 95% confidence interval (CI) 2.0 to 8.0]. The maximal PAED score was lower in Group P than in Group C [4 (0-20) vs 9 (0-20), median difference -3.0, 95% CI -5.0 to -1.0]. Visual preconditioning prolonged emergence time (P<0.001) and PACU stay time (P=0.002). CONCLUSION Visual disturbance contributes to emergence delirium in preschool children undergoing ophthalmic surgery with sevoflurane, and prophylactic eyepatch treatment can reduce emergence delirium. CLINICAL TRIALS REGISTRATION NCT02590744.
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Zheng JW, Shen W, Sun Y, Xie JH, Xiang D. A novel HLA class I allele: HLA-A*11:01:49. HLA 2018; 91:531-532. [PMID: 29573329 DOI: 10.1111/tan.13259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/10/2018] [Accepted: 03/14/2018] [Indexed: 11/28/2022]
Abstract
The HLA-A*11:01:49 allele differs from A*11:01:01:01 by one synonymous nucleotide substitution at position 837.
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Cheng X, Zhang Y, Wang C, Deng W, Wang L, Duanmu Y, Li K, Yan D, Xu L, Wu C, Shen W, Tian W. The optimal anatomic site for a single slice to estimate the total volume of visceral adipose tissue by using the quantitative computed tomography (QCT) in Chinese population. Eur J Clin Nutr 2018; 72:1567-1575. [PMID: 29559725 DOI: 10.1038/s41430-018-0122-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 01/29/2018] [Accepted: 01/29/2018] [Indexed: 01/10/2023]
Abstract
BACKGROUND/OBJECTIVES To investigate the relationship between the cross-sectional visceral adipose tissue (VAT) areas at different anatomic sites and the total VAT volume in a healthy Chinese population using quantitative computed tomography (QCT), and to identify the optimal anatomic site for a single slice to estimate the total VAT volume. SUBJECTS/METHODS A total of 389 healthy Chinese subjects aged 19-63 years underwent lumbar spine QCT scans. The cross-sectional area of total adipose tissue and VAT were measured using the tissue composition module of the software (QCT Pro, Mindways) at each intervertebral disc level from T12/L1 to L5/S1, as well as at the umbilical level. The total VAT volume was defined as the fat areas multiplied by the height of vertebral body for all six slices. Statistical analysis was performed to determine the correlation between single-slice VAT areas and the total VAT volume. Moreover, the optimal anatomic site for a single slice to estimate the total VAT volume was identified by multiple regression analysis. RESULTS The cross-sectional area of VAT and subcutaneous adipose tissue (SAT) measured at each anatomic site was all highly correlated with the total VAT volume and the total SAT volume (r = 0.89-0.98). Additionally, the VAT area measured at the L2/L3 level showed the strongest correlation with the total VAT volume (r = 0.98, P < 0.001). Covariates including age, gender, BMI, waist, and hypertension make a slight effect on the prediction of the total VAT volume. CONCLUSION It is feasible to perform measurements of VAT area on a single slice at L2/L3 level for estimating the total VAT volume.
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Shen W, Young BA, Bosworth M, Wright KE, Lamb AN, Ji Y. Prenatal detection of uniparental disomy of chromosome 2 carrying a CHRND pathogenic variant that causes lethal multiple pterygium syndrome. Clin Genet 2018; 93:1248-1249. [PMID: 29399782 DOI: 10.1111/cge.13164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 10/23/2017] [Accepted: 10/24/2017] [Indexed: 11/27/2022]
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Hu C, Huo S, Shen W, Li Y, Hu X. Reflectance difference microscopy for nanometre thickness microstructure measurements. J Microsc 2018; 270:318-325. [PMID: 29383705 DOI: 10.1111/jmi.12685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 12/21/2017] [Accepted: 01/10/2018] [Indexed: 11/27/2022]
Abstract
The discontinuity of medium at the boundary produces optically anisotropic response which makes reflectance difference microscopy (RDM) a potential method for nanometre-thickness microstructure measurements. Here, we present the methodology of RDM for the edge measurement of ultrathin microstructure. The RD signal of microstructure's boundary is mathematically deduced according to boundary condition and polarization optics theory. A normal-incidence RDM setup was built simply with one linear polarizer, one liquid crystal variable retarder and one 5 × objective. Then, the performance of the developed setup was identified using homogenous reflection mirror and high quality linear polarizer. For demonstration, microstructures array with 100 nm step height was measured. The results show that the RD signal is sensitive to the edge and its sign reflects the change direction of the edge. Furthermore, a height sensitivity of better than 10 nm and a spatial resolution of ∼3 μm offer this technique a good candidate for characterizing ultrathin microstructures.
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Zheng JW, Shen W, Sun Y, Xie JH, Xiang D. A novel HLA-B allele: HLA-B*40:241. HLA 2017; 91:138-139. [PMID: 29278463 DOI: 10.1111/tan.13194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 12/16/2017] [Accepted: 12/19/2017] [Indexed: 11/28/2022]
Abstract
The HLA-B*40:241 allele differs from B*40:01:01 by 1 nucleotide substitution at position 691.
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Li Q, Qiu B, Xie W, Hui Z, Wang B, Liang Y, Guo J, Zhou Y, Zhu M, Shen W, Duan R, Chen L, Zhang L, Long H, Liu H. P2.14-004 Comparable Local Controls after Twice-Daily and Once-Daily Chest Radiotherapy in Extensive Stage Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen J, Gu Y, Shen W. MicroRNA-21 functions as an oncogene and promotes cell proliferation and invasion via TIMP3 in renal cancer. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:4566-4576. [PMID: 29131259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Renal cell carcinoma (RCC) displays an increasing incidence and mortality rate worldwide in recent years. More and more evidence identified microRNAs function as positive or negative regulatory factors in many cancers, but the role of miR-21 in RCC remains unclear. PATIENTS AND METHODS Relative expression levels of miR-21 in human RCC tissue samples and RCC-derived cell lines were measured using quantitative real-time Polymerase Chain Reaction (PCR). Clinical features were collected to further study the relationship between the miR-21 level and clinicopathologic variables. Loss- and gain- of miR-21 experiments were employed to measure the influence of miR-21 in cell proliferation, apoptosis, invasion and migration. Downstream target gene was confirmed by using luciferase and Western blotting assays. RESULTS MiR-21 significantly over-expressed in RCC tissues and cell lines than normal groups. Higher miR-21 expression level indicated larger tumor sizes, more lymph metastasis and advanced tumor node metastasis (TNM) stage. Knocking down miR-21 inhibited the cell growth, invasion and migration abilities but promoted the cell apoptosis, while over-expressing miR-21 promoted cell growth and metastasis. Furthermore, TIMP3 was confirmed as a direct target of moR-21 and inhibition of TIMP3 reserved the effect of down-regulating miR-21 in RCC cells. CONCLUSIONS Our study demonstrated miR-21 was significantly over-expressed and functioned as a tumor oncogene via TIMP3 in RCC, which could provide a potential target for RCC diagnosis and therapy.
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Chen J, Shu Y, Yu Q, Shen W. MicroRNA-645 promotes cell metastasis and proliferation of renal clear cell carcinoma by targeting GK5. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:4557-4565. [PMID: 29131260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To dissect the functioning mode of miR-645 on renal clear cell carcinoma cell metastasis and growth, and provide therapeutic targets for renal clear cell carcinoma. PATIENTS AND METHODS Quantitative Real-time PCR (qRT-PCR) assay was employed to detect miR-645 expression level. Wound healing assay and transwell assay were performed to investigate metastasis capacity of renal clear cell carcinoma cells. Cell Counting Kit 8 (CCK8) assay was incorporated to assess cell proliferation capacity. Flow cytometry was used to identify cell apoptosis and cell cycle distribution. Protein levels were assessed by Western blotting assay. The target gene was predicted and verified by bioinformatics analysis and luciferase assay. RESULTS MiR-645 was upregulated in renal clear cell carcinoma tissues when compared with para-carcinoma tissues (n=32). Downregulated miR-645 could attenuate cell migration and invasion capacities, as well as inhibited cell proliferation capacity, promoted cell apoptosis and cell cycle arrest at G0/G1 phase. GK5 was chosen as the target gene of miR-645 by bioinformatics analysis and luciferase reporter assay. Moreover, silence of GK5 could rescue tumor suppression role of downregulated miR-645 on renal clear cell carcinoma metastasis. CONCLUSIONS Knockdown of miR-645 exerted tumor-suppressive effects on renal clear cell carcinoma metastasis and growth via targeting GK5 in vitro, which provided an innovative and candidate target for diagnose and treatment of renal clear cell carcinoma.
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Shen W, Li HL, Liu L, Cheng JX. Expression levels of PTEN, HIF-1α, and VEGF as prognostic factors in ovarian cancer. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:2596-2603. [PMID: 28678326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Epithelial ovarian cancer is associated with high mortality, mostly because of delayed diagnosis, necessitating the search for novel diagnostic and prognostic markers. Here we evaluated the association between expression levels of phosphatase and tensin homolog (PTEN), hypoxia-inducible factor (HIF)-1α, and vascular endothelial growth factor (VEGF), and ovarian cancer. PATIENTS AND METHODS Expressions of these proteins were assessed by immunohistochemistry in 21 specimens of normal ovary tissues and 76 specimens of ovarian cancer tissues. Associations with pathological characteristics and prognosis were determined using chi-square test, Kaplan-Meier method, log-rank test, and Cox regression model. RESULTS Expression of PTEN in ovarian cancer tissue was negatively associated with clinical stage and differentiation degree. A reverse trend was observed in association between expression of HIF-1α and VEGF, and the clinical stage of the disease. PTEN expression negatively correlated with HIF-1α and VEGF expression levels, whereas both latter positively correlated with each other. The overall survival of patients with positive PTEN expression was significantly longer than that of those with negative expression; the opposite trend was observed with HIF-1α and VEGF. The differentiation degree and expressions of HIF-1α and PTEN were dependent predictors, whereas VEGF expression, clinical stage and lymph node metastasization were independent prognostic factors in these patients. CONCLUSIONS PTEN, HIF-lα, and VEGF were found to be prognostic markers in ovarian cancer, with VEGF also being as an independent prognostic factor. Combined detection of their expression levels may be useful for determination of the degree of malignancy, metastasis, and prognosis of ovarian cancer.
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Fan MJ, Zhong YH, Shen W, Yuan KF, Zhao GH, Zhang Y, Wang SK. MiR-30 suppresses lung cancer cell 95D epithelial mesenchymal transition and invasion through targeted regulating Snail. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:2642-2649. [PMID: 28678320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE As an important factor regulating the epithelial mesenchymal transition (EMT) Snail is associated with lung cancer. Bioinformatics analysis showed that microRNA-30a (miR-30a) may target the 3'-UTR of Snail mRNA. It was exhibited that miR-30a down-regulation was related to tumor size, TNM stage, and poor prognosis of non-small cell lung cancer (NSCLC) patients, which suggests that miR-30a might participate in NSCLC attack. This study aims to explore the role of miR-30a and Snail in NSCLC invasion and metastasis. PATIENTS AND METHODS NSCLC tumor and para-carcinoma tissues were collected from 46 patients to evaluate the miR-30a and Snail expressions. The targeted relationship between miR-30a and Snail was verified by using dual-luciferase reporter assay. 95D cells were cultured in vitro and transfected with miR-30a mimic or small interfere RNA targeting Snail (si-Snail). The expression of miR-30a, Snail, EMT-related factors, malignant growth, invasion, and apoptosis, were compared. RESULTS Snail was significantly up-regulated, while miR-30a was significantly reduced in NSCLC tissue. MiR-30a suppressed Snail expression by targeting the 3'-URT of Snail mRNA. 95D cells exhibited significantly higher Snail, N-cadherin, and vimentin levels, while lower miR-30a, E-cadherin, and occludin expressions were compared with 95C cells. 95D cells presented stronger malignant growth and invasive ability, whereas lower background apoptosis than 95C. MiR-30a mimic and/or si-Snail transfection significantly enhanced E-cadherin and occludin expression, while significantly declined N-cadherin and vimentin levels, thus weakening malignant growth and invasion and increasing cell apoptosis. CONCLUSIONS Snail up-regulated, while miR-30a declined in NSCLC tissue. MiR-30a may suppress Snail expression, restrain EMT, and inhibit lung cancer cell invasion.
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Zhang X, Batchelor W, Shen W. Building Dual-Scale Roughness Using Inorganic Pigments for Fabrication of Superhydrophobic Paper. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00225] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang Q, Shen W, Tao GQ, Sun J, Shi LP. Study on the proliferation of human gastric cancer cell AGS by activation of EGFR in H2O2. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:1006-1012. [PMID: 28338196] [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 This study is to investigate the effect of low concentration hydrogen peroxide (H2O2) on the proliferation of gastric cancer AGS cell line in vitro and the mechanism. MATERIALS AND METHODS AGS cells were treated with different low concentrations of H2O2 (1, 0.1, 0.01, and 0.001 μm) for 48 hours. The effect of H2O2 concentration gradient on the activity of AGS cell activities was detected by methyl thiazolyl tetrazolium (MTT) method. The expression of the epidermal growth factor receptor (EGFR) and its downstream signaling pathway extracellular signal-regulated kinase (ERK) protein in H2O2 was detected by Western blot method; moreover, the effect of H2O2 on intracellular reactive oxygen species (ROS) in AGS cells was observed under the fluorescence microscope and quantitative analysis by flow cytometry. The effect of H2O2 on the level of c-myc mRNA in AGS cells was also detected by reverse transcription polymerase chain reaction (RT-PCR). RESULTS MTT detection results showed that 1 μm and 0.1 μm H2O2 at 48h can effectively promote the proliferation of AGS cells (p<0.05). The Western blot results showed that after 48 hours of low concentration of H2O2 treatment of AGS cells, the EGFR protein levels and ERK protein phosphorylation levels increased significantly (p<0.05). Fluorescence microscopy and flow cytometry showed that the low concentration of H2O2 increased the intracellular reactive oxygen species (ROS). RT-PCR results showed the levels of c-myc mRNA in AGS cells treated with a low concentration of H2O2 were significantly increased (p<0.05) and EGFR blocking agent AG1478 can resist the above effects. CONCLUSIONS Low concentration of H2O2 can significantly promote the proliferation of AGS cells by activating EGFR/ERK signaling pathway.
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Gu Z, Li F, Hu J, Ding C, Wang C, Tian J, Xue B, Xu K, Shen W, Li B. Sublethal dose of phoxim and Bombyx mori nucleopolyhedrovirus interact to elevate silkworm mortality. PEST MANAGEMENT SCIENCE 2017; 73:554-561. [PMID: 27220913 DOI: 10.1002/ps.4326] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 04/29/2016] [Accepted: 05/22/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Silkworm (Bombyx mori) is an economically important insect. It is relatively less resistant to certain chemicals and environment exposures such as pesticides and pathogens. After pesticide exposures, the silkworms are more susceptible to microbial infections. The mechanism underlying the susceptibility might be related to immune response and oxidative stress. RESULTS A sublethal dose of phoxim combined with Bombyx mori nucleopolyhedrovirus (BmNPV) elevated the silkworm mortality at 96 h. We found a higher content of H2 O2 and increased levels of genes related to oxidative stress and immune response after treatment with a sublethal dose of phoxim for 24 h or 48 h. However, such response decreased with longer pesticide treatment. Mortality increased by 44% when B. mori was exposed to combined treatment with BmNPV and phoxim rather than BmNPV alone. The level of examined immune-related and oxidative-stress-related genes significantly decreased in the combined treatment group compared with the BmNPV group. Our results indicated that, with long-term exposure to pesticides such as OPs, even at sublethal dose, the oxidative stress response and immune responses in silkworm were inhibited, which may lead to further immune impairment and accumulation of oxidative stress, resulting in susceptibility to the virus and harm to the silkworm. CONCLUSION Our study provided insights for understanding the susceptibility to pathogen after pesticide exposures, which may promote the development of better pesticide controls to avoid significant economic losses. © 2016 Society of Chemical Industry.
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Huang J, Liang P, Xu J, Wu Y, Shen W, Xu B, Zhang D, Xia J, Zhuang S. Qualitative and quantitative determination of coumarin using surface-enhanced Raman spectroscopy coupled with intelligent multivariate analysis. RSC Adv 2017. [DOI: 10.1039/c7ra09059e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Coumarin is harmful to health but still used in cosmetics, tobacco, or illegally added into food as a spice in trace amounts so that it is exceedingly difficult to be determined accurately.
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Yuan J, Jiang B, Li K, Shen W, Tang JL. Beneficial effects of protein hydrolysates in exercise and sports nutrition. J BIOL REG HOMEOS AG 2017; 31:183-188. [PMID: 28337890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Protein hydrolysates (PH) are rich sources of proteins that supply the need of exercising muscles. PHs are enriched in di- and tripeptides and are better than free amino acids or intact proteins when muscle anabolic effect is considered. Digestion, absorption and muscle uptake of amino acids are faster and more efficient when PH is ingested in comparison to the respective intact protein. PHs not only enhance endurance in high intensity exercise regimen, but also help in faster post-exercise recovery of muscle by promoting glycogen synthesis, although the latter effect requires more convincing evidence. PHs have been shown to exhibit insulinotrophic effect as it enhances the secretion of insulin and the hormone, in turn, exerts muscle anabolic effect.
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Yu J, Shen W, Gao B, Zhao H, Xu J, Gong B. MicroRNA-182 targets FOXF2 to promote the development of triple-negative breast cancer. Neoplasma 2017; 64:209-215. [DOI: 10.4149/neo_2017_206] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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75
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Deng WY, Wei C, Li N, Zhang YP, Shen W, Zhang C, Luo SX. [Relationship between metastatic lymph node and prognosis of esophageal cancer patients treated with following radical esophagectomy]. ZHONGHUA YI XUE ZA ZHI 2016; 96:3829-3832. [PMID: 28057100 DOI: 10.3760/cma.j.issn.0376-2491.2016.47.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the number of metastatic lymph nodes (pN) and the metastatic lymph node ratio (LNR) on the post-surgical prognosis of patients with esophageal cancer (EC). Methods: A retrospective analysis of 573 inpatients diagnosed as esophageal carcinomas from March 2008 to June 2012 was carried out.All pathologic specimen were reviewed by pathologists from Henan Tumor Hospital.The Kaplan-Meier method was used to calculate survival rates, and survival curves were compared with the Log-rank test.The Cox model was employed for multivariate analyses of factors.The association of pN and LNR with prognosis of esophageal cancer was examined by the area under the ROC curve(AUC). Results: The 1-, 3- and 5-year OS rates were 72.5%, 46.1% and 32.3%, respectively.Univariate analysis showed that tumor location(P=0.020), tumor length(P=0.009), pT stage(P=0.011), pN stage(P<0.01), and the LNR(P<0.01) were prognostic factors for OS.Multivariate analysis indicated that pT stage(P=0.047), pN stage(P=0.018) and LNR(P=0.011) were significant and independent risk factors for poor OS.ROC analysis indicated that LNR (AUC=0.680) had better predictive value than pN (AUC=0.579). Conclusion: The integrated use of LNR and pN may be suitable for evaluation of prognosis in patients with EC and positive nodal metastasis after curative resection.
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Shen W, Benyounes H, Dong L, Wei S, Li J, Gerbaud V. CONCEPTUAL DESIGN OF NON-IDEAL MIXTURE SEPARATION WITH LIGHT ENTRAINERS. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2016. [DOI: 10.1590/0104-6632.20160334s20140169] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Cao J, Ji D, Shen W, Wang Q, Liu Y, Lu D, Sturm I, Huang F, Cleton A. 193P A phase 1 study evaluating the pharmacokinetics (PK), safety, and efficacy of regorafenib (REG) in Chinese patients with advanced, refractory solid tumors. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yu XQ, Cai C, Du X, Shen W. [Effect of hypoxia-inducible factor-2α/stearoyl-CoA desaturase-1 pathway on biological behaviors of hepatoma cells induced by hypoxia]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2016; 24:506-512. [PMID: 27784428 DOI: 10.3760/cma.j.issn.1007-3418.2016.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate whether hypoxia-inducible factor-2α (HIF-2α) affects the biological behaviors of hepatoma cells through regulating stearoyl-CoA desaturase-1 (SCD1) in a hypoxic environment. Methods: HepG2 and SMMC-7721 cells were exposed to 1% O2 to establish the hypoxic models. After hepatoma cells were stimulated by hypoxia for 0, 3, 6, 12, and 24 hours, fluorescent quantitative PCR and Western blot were used to measure the mRNA and protein expression of HIF-2α and SCD1 over time. HIF-2α interfering plasmids and SCD1 inhibitor CAY10566 were used to divide the cells into blank group (nomoxia), hypoxic group (1% O2 for 12 h), hypoxic negative control group (negative HIF-2α plasmid+1% O2 for 12 h), hypoxic interference group (HIF-2α interfering plasmid+1% O2 for 12 h), hypoxic CAY group (CAY10566 10 μmol+1% O2 for 12 h), and hypoxic interference+CAY group (HIF-2α interfering plasmid+CAY10566 10 μmol+1% O2 for 12 h). Western blot was used to measure the protein expression of HIF-2α and SCD1 in hepatoma cells, CCK8 assay was used to measure the proliferative capacity of hepatoma cells, Annexin-V/PE flow cytometry was used to measure the apoptosis of hepatoma cells, and transwell invasion assay was used to measure the invasion of hepatoma cells. A one-way analysis of variance was used to compare the means of multiple samples. Results: Both HepG2 and SMMC-7721 cells showed increasing mRNA and protein expression of HIF-2α and SCD1 over the time of hypoxic induction. After the expression of HIF-2α was downregulated in a hypoxic environment, hepatoma cells showed a significant reduction in the protein expression of SCD1; inhibition of SCD1 expression had no significant effect on the protein expression of HIF-2α in hepatoma cells. After HIF-2α was interfered with and SCD1 expression was inhibited, HepG2 and SMMC-7721 cells showed significantly greater reduction in the protein expression of SCD1 than those with HIF-2α or SCD1 inhibition alone (0.53±0.04 vs 1.12±0.04 or 1.12±0.04; 0.44±0.10 vs 0.90±0.10 or 0.99±0.13) (HIF-2α: FhepG2 = 1026.89, PhepG2 = 0.00, FSMMC-7721 = 2186.22, PSMMC-7721 = 0.00; SCD1: FhepG2 = 1347.93, PhepG2 = 0.00, FSMMC-7721 = 46.43, PSMMC-7721 = 0.00). Inhibition of the expression of HIF-2α or SCD1 reduced the proliferation and invasion of HepG2 and SMMC-7721 cells and promoted apoptosis (P < 0.05); interference and downregulation of HIF-2α combined with inhibition of SCD1 expression by CAY10566 achieved significantly greater reductions in proliferation and invasion and a significantly greater increase in apoptosis rate of hepatoma cells, compared with inhibition of HIF-2α or SCD1 alone (P <0.05). Conclusion: HIF-2α/SCD1 pathway may be one of the important mechanisms for hypoxia to regulate the energy metabolism of hepatoma cells and affect their biological behaviors.
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Pan B, Xu ZW, Xu Y, Liu LJ, Zhu J, Wang X, Nan C, Zhang Z, Shen W, Huang XP, Tian J. Diastolic dysfunction and cardiac troponin I decrease in aging hearts. Arch Biochem Biophys 2016; 603:20-8. [PMID: 27184165 DOI: 10.1016/j.abb.2016.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 05/07/2016] [Accepted: 05/11/2016] [Indexed: 11/28/2022]
Abstract
Cardiac tropnoin I (cTnI) plays a critical role in the regulation of diastolic function, and its low expression may result in cardiac diastolic dysfunction, which is the most common form of cardiovascular disorders in older adults. In this study, cTnI expression levels were determined in mice at various ages and cardiac function was measured and compared between young adult mice (3 and 10 months) and older mice (18 months). The data indicated that the cTnI levels reached a peak high in young adult hearts (3 months), but decreased in older hearts (18 months). Furthermore, the older hearts showed a significant diastolic dysfunction observed by P-V loop and echocardiography measurements. To further define the mechanism underlying the cTnI decrease in aging hearts, we tested DNA methylation and histone acetylation modifications of cTnI gene. We found that acetylation of histone near the promoter region of cTnI gene played an important role in regulation of cTnI expression in the heart at different ages. Our study indicates that epigenetic modification caused cTnI expression decrease is one of the possible causes that result in a reduced cTnI level and diastolic dysfunction in the older hearts.
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Sun J, Zhu M, Shen W, Wang C, Dai J, Xu L, Jin G, Hu Z, Ma H, Shen H. A potentially functional polymorphism in ABCG2 predicts clinical outcome of non-small cell lung cancer in a Chinese population. THE PHARMACOGENOMICS JOURNAL 2016; 17:280-285. [PMID: 26951883 DOI: 10.1038/tpj.2016.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 10/06/2015] [Accepted: 11/26/2015] [Indexed: 12/29/2022]
Abstract
ABCG2, CD133 and CD117 are pivotal markers of cancer stem cell, which are involved in carcinogenesis and cancer progression. The expression of these genes has been reported to be associated with the development and progression of many cancers, including non-small cell lung cancer (NSCLC). We selected and genotyped 9 potentially functional single-nucleotide polymorphisms in the 3 genes in a clinical cohort of 1001 NSCLC patients in a Chinese population. We found that variant genotypes of ABCG2 rs3114020 were associated with a significantly increased risk of death for NSCLC (additive model: adjusted hazard ratio=1.25, 95% confidence intervals=1.10-1.42, P<0.001). Further stepwise regression analysis suggested that rs3114020 was an independent risk factor for the prognosis of NSCLC. Besides, histology interacted with the genetic effect of rs3114020 in relation to NSCLC survival in the interaction analysis. Our findings show that ABCG2 rs3114020 might be one of the candidate biomarkers for NSCLC survival in this Chinese population, especially among patients with adenocarcinoma.
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Li Y, Ni M, Li F, Zhang H, Xu K, Zhao X, Tian J, Hu J, Wang B, Shen W, Li B. Effects of TiO2 NPs on Silkworm Growth and Feed Efficiency. Biol Trace Elem Res 2016; 169:382-6. [PMID: 26105547 DOI: 10.1007/s12011-015-0413-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 06/12/2015] [Indexed: 12/11/2022]
Abstract
Silkworm (Bombyx mori) (B. mori) is an economically important insect and a model species for Lepidoptera. It has been reported that feeding of low concentrations of titanium dioxide nanoparticles (TiO2 NPs) can improve feed efficiency and increase cocoon mass, cocoon shell mass, and the ratio of cocoon shell. However, high concentrations of TiO2 NPs are toxic. In this study, we fed B. mori with different concentrations of TiO2 NPs (5, 10, 20, 40, 80, and 160 mg/L) and investigated B. mori growth, feed efficiency, and cocoon quality. We found that low concentrations of TiO2 NPs (5 and 10 mg/L) were more effective for weight gains, with significant weight gain being obtained at 72 h (P < 0.05). TiO2 NPs at 20 mg/L or higher had certain inhibitory effects, with significant inhibition to B. mori growth being observed at 48 h. The feed efficiency was significantly improved at low concentrations of 5 and 10 mg/L for 14.6 and 13.1 %, respectively (P < 0.05). All B. mori fed with TiO2 NPs showed increased cocoon mass and cocoon shell mass; at 5 and 10 mg/L TiO2 NPs, cocoon mass was significantly increased by 8.29 and 9.39 %, respectively (P < 0.05). We also found that low concentrations (5 and 10 mg/L) of TiO2 NPs promoted B. mori growth and development, improved feed efficiency, and increased cocoon production, while high concentrations (20 mg/L or higher) of TiO2 NPs showed inhibitory effect to the B. mori. Consecutive feeding of high concentrations of TiO2 NPs led to some degrees of adaptability. This study provides a reference for the research on TiO2 NPs toxicity and the basis for the development of TiO2 NPs as a feed additive for B. mori.
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Kimball AB, Edson-Heredia E, Zhu B, Guo J, Maeda-Chubachi T, Shen W, Bianchi MT. Understanding the Relationship Between Pruritus Severity and Work Productivity in Patients With Moderate-to-Severe Psoriasis: Sleep Problems Are a Mediating Factor. J Drugs Dermatol 2016; 15:183-188. [PMID: 26885786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Psoriasis is a debilitating skin disease associated with substantial pruritus, work impairment, and sleep disturbance. OBJECTIVE This study evaluated associations between pruritus and work productivity, and the role of sleep problems as a possible mediator of the relationship between the two. METHODS AND MATERIALS Data from a pruritus visual analog scale (Itch VAS), the Medical Outcomes Study Sleep Scale (MOS-SS), and the Work Productivity and Activity Impairment Questionnaire (WPAI) were collected in a phase 2 clinical trial in patients with psoriasis treated with ixekizumab or placebo. Mediating effects of sleep were tested in multiple regressions with pruritus severity (independent variable) and work productivity (dependent variable). Sobel tests evaluated the significance of sleep's effect. RESULTS Several MOS-SS domains were significantly associated with the WPAI presenteeism, work productivity, and activity impairment scores, and decreased the effect of pruritus. Sobel tests indicated that the Sleep Problems Index I had a significant effect (P<.05) in mediating the relationship between pruritus and presenteeism, work productivity, and activity impairment. CONCLUSION Sleep may mediate the role of pruritus on work productivity, but both factors appear to have independent negative effects on work.
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Wang HH, Cui Q, Zhang T, Wang ZB, Ouyang YC, Shen W, Ma JY, Schatten H, Sun QY. Rab3A, Rab27A, and Rab35 regulate different events during mouse oocyte meiotic maturation and activation. Histochem Cell Biol 2016; 145:647-57. [PMID: 26791531 DOI: 10.1007/s00418-015-1404-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2015] [Indexed: 01/22/2023]
Abstract
Rab family members play important roles in membrane trafficking, cell growth, and differentiation. Almost all components of the cell endomembrane system, the nucleus, and the plasma membrane are closely related to RAB proteins. In this study, we investigated the distribution and functions of three members of the Rab family, Rab3A, Rab27A, and Rab35, in mouse oocyte meiotic maturation and activation. The three Rab family members showed different localization patterns in oocytes. Microinjection of siRNA, antibody injection, or inhibitor treatment showed that (1) Rab3A regulates peripheral spindle and cortical granule (CG) migration, polarity establishment, and asymmetric division; (2) Rab27A regulates CG exocytosis following MII-stage oocyte activation; and (3) Rab35 plays an important role in spindle organization and morphology maintenance, and thus meiotic nuclear maturation. These results show that Rab proteins play important roles in mouse oocyte meiotic maturation and activation and that different members exert different distinct functions.
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Shen W, Chen J, Yin J, Wang SL. Selenium protects reproductive system and foetus development in a rat model of gestational lead exposure. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2016; 20:773-780. [PMID: 26957284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Lead is a common environmental contaminant. Lead accumulation in the body is especially dangerous for pregnant women and newborns. Selenium is a trace element which may rectify the damaging effects of lead. Here we tested potential protective effects of selenium against gestational lead exposure. MATERIALS AND METHODS Pregnant SD rats were exposed to 200 mg/L of lead acetate (given with water), with or without sodium selenite supplementation (2-8 mg/kg/day via intragastric administration). Pregnant rats not exposed to lead or selenium served as control animals. The outcomes in pregnant rats were serum lead and selenium levels, reproductive hormone (follicle-stimulating hormone, luteinizing hormone, prolactin, oestradiol, progesterone) levels, and uterine and ovarian morphological changes. The outcomes in the offspring were sex differentiation, survival rates (day 21 after birth), weight (days 0-35 after birth), weight of reproductive organs, and puberty onset (foreskin separation or vaginal opening). RESULTS Selenium supplementation dose-dependently decreased serum lead levels, rectified reproductive hormone levels, and attenuated reproductive morphological changes caused by lead exposure. Lead exposure did not affect sex differentiation, but significantly (p < 0.05 vs. control animals) decreased the offspring weight on days 0-28 and the weight of their reproductive organs. Furthermore, lead exposure delayed the onset of puberty. These pathological changes were dose-dependently rectified or attenuated by selenium supplementation. CONCLUSIONS Gestational lead exposure causes damages to the reproductive system of pregnant rats, and negatively modulates growth and reproductive system development of the offspring. These adverse effects are rectified or attenuated by selenium supplementation.
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Cao J, Li J, Ji D, Shen W, Jiang L, Ma X, Pang J, Kanehisa A, Legrand F, Pallis A, Paux G, Robert R, Chen X, Letecheur P, Qiang L, Ding J. 126O A phase I study evaluating the safety, efficacy, pharmacokinetics and pharmacodynamics of AL3810 in advanced solid tumors. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv521.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wu Y, Fan L, Liu M, Shen W, Xiang D, Cai X. Anti-Di(b) causing hemolytic disease of the fetus and newborn and the challenges of anti-Di(b) in perinatal management in China. Transfus Med 2015; 25:428-30. [PMID: 26578228 DOI: 10.1111/tme.12260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 07/22/2015] [Accepted: 10/24/2015] [Indexed: 11/27/2022]
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Zhu S, Su J, Liu Z, Shen W, Li S, Xu J, Dong H. Comparative Study of the Failure Model of Esophageal Cancer With Elective Nodal Prophylactic and Involved-Field Irradiation. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shen W, Chang A, Wang J, Zhou W, Gao R, Li J, Xu Y, Luo X, Xiang R, Luo N, Stupack DG. TIFA, an inflammatory signaling adaptor, is tumor suppressive for liver cancer. Oncogenesis 2015; 4:e173. [PMID: 26501855 PMCID: PMC4632091 DOI: 10.1038/oncsis.2015.30] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 07/29/2015] [Accepted: 08/07/2015] [Indexed: 02/07/2023] Open
Abstract
TIFA (TNF receptor associated factor (TRAF)-interacting protein with a Forkhead-associated (FHA) domain), also called T2BP, was first identified using a yeast two-hybrid screening. TIFA contains a FHA domain, which directly binds phosphothreonine and phosphoserine, and a consensus TRAF6-binding motif. TIFA-mediated oligomerization and poly-ubiquitinylation of TRAF6 mediates signaling downstream of the Tumor necrosis factor alpha receptor 1 (TNFaR-I) and interleukin-1/Toll-like receptor 4 (TLR4) pathways. Examining TIFA expression in hepatocellular carcinoma (HCC) tissues microarrays, we noted marked decreases TIFA reactivity in tumor versus control samples. In agreement, we found that HCC cell lines show reduced TIFA expression levels versus normal liver controls. Reconstituting TIFA expression in HCC cell lines promoted two independent apoptosis signaling pathways: the induction of p53 and cell cycle arrest, and the activation of caspase-8 and caspase-3. In contrast, the expression of a non-oligomerizing mutant of TIFA impacted cells minimally, and suppression of TIFA expression protected cells from apoptosis. Mice bearing TIFA overexpression hepatocellular xenografts develop smaller tumors versus TIFA mutant tumors; terminal deoxynucleotidyl transferase dUTP nick end labeling staining demonstrates increased cell apoptosis, and decreased proliferation, reflecting cell cycle arrest. Interestingly, p53 has a greater role in decreased proliferation than cell death, as it appeared dispensable for TIFA-induced cell killing. The findings demonstrate a novel suppressive role of TIFA in HCC progression via promotion of cell death independent of p53.
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Ge W, Chen C, De Felici M, Shen W. In vitro differentiation of germ cells from stem cells: a comparison between primordial germ cells and in vitro derived primordial germ cell-like cells. Cell Death Dis 2015; 6:e1906. [PMID: 26469955 PMCID: PMC4632295 DOI: 10.1038/cddis.2015.265] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/01/2015] [Accepted: 08/04/2015] [Indexed: 01/15/2023]
Abstract
Stem cells are unique cell types capable to proliferate, some of them indefinitely, while maintaining the ability to differentiate into a few or any cell lineages. In 2003, a group headed by Hans R. Schöler reported that oocyte-like cells could be produced from mouse embryonic stem (ES) cells in vitro. After more than 10 years, where have these researches reached? Which are the major successes achieved and the problems still remaining to be solved? Although during the last years, many reviews have been published about these topics, in the present work, we will focus on an aspect that has been little considered so far, namely a strict comparison between the in vitro and in vivo developmental capabilities of the primordial germ cells (PGCs) isolated from the embryo and the PGC-like cells (PGC-LCs) produced in vitro from different types of stem cells in the mouse, the species in which most investigation has been carried out. Actually, the formation and differentiation of PGCs are crucial for both male and female gametogenesis, and the faithful production of PGCs in vitro represents the basis for obtaining functional germ cells.
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Cohen A, Shen W, Dempster DW, Zhou H, Recker RR, Lappe JM, Kepley A, Kamanda-Kosseh M, Bucovsky M, Stein EM, Nickolas TL, Shane E. Marrow adiposity assessed on transiliac crest biopsy samples correlates with noninvasive measurement of marrow adiposity by proton magnetic resonance spectroscopy ((1)H-MRS) at the spine but not the femur. Osteoporos Int 2015; 26:2471-8. [PMID: 25986383 PMCID: PMC5206911 DOI: 10.1007/s00198-015-3161-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 04/29/2015] [Indexed: 01/29/2023]
Abstract
UNLABELLED Measurement of marrow fat (MF) is important to the study of bone fragility. We measured MF on iliac biopsies and by spine/hip magnetic resonance spectroscopy in the same subjects. Noninvasively assessed spine MF and histomorphometrically assessed MF correlated well. MF quantity and relationships with bone volume differed by measurement site. INTRODUCTION Excess marrow fat has been implicated in the pathogenesis of osteoporosis in several populations. In the bone marrow, adipocytes and osteoblasts share a common precursor and are reciprocally regulated. In addition, adipocytes may secrete toxic fatty acids and adipokines that adversely affect osteoblasts. Measurement of marrow fat is important to the study of mechanisms of bone fragility. Marrow fat can be quantified on bone biopsy samples by histomorphometry and noninvasively by proton magnetic resonance spectroscopy ((1)H-MRS). In this study, we evaluate relationships between marrow fat assessed using both methods in the same subjects for the first time. METHODS Sixteen premenopausal women, nine with idiopathic osteoporosis and seven normal controls, had marrow fat measured at the iliac crest by bone biopsy and at the lumbar spine (L3) and proximal femur by (1)H-MRS. RESULTS At L3, fat fraction by (1)H-MRS correlated directly and significantly with marrow fat variables on iliac crest biopsies (r = 0.5-0.8). In contrast, there were no significant correlations between fat fraction at the femur and marrow fat on biopsies. Marrow fat quantity (%) was greater at the femur than at L3 and the iliac crest and correlated inversely with total hip and femoral neck BMD by DXA. CONCLUSIONS In summary, measurement of marrow fat in transiliac crest biopsies correlates with marrow fat at the spine but not the proximal femur by (1)H-MRS. There were site-specific differences in marrow fat quantity and in the relationships between marrow fat and bone volume.
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Robinson T, Gaines T, Wu J, Christianson M, Shen W. Experience of women with human immunodeficiency virus during the menopause transition. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ni M, Li F, Tian J, Hu J, Zhang H, Xu K, Wang B, Li Y, Shen W, Li B. Effects of Titanium Dioxide Nanoparticles on the Synthesis of Fibroin in Silkworm (Bombyx mori). Biol Trace Elem Res 2015; 166:225-35. [PMID: 25876086 DOI: 10.1007/s12011-015-0258-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 01/27/2015] [Indexed: 10/24/2022]
Abstract
Silkworm (Bombyx mori) is an economically important insect, and its silk production capacity largely depends on its ability to synthesize fibroin. While breeding of B. mori varieties has been a key strategy to improve silk production, little improvement of B. mori silk production has been achieved to date. As a result, the development of sericulture economy has not progressed well, pointing to the need of new ways for improvement of B. mori silk production. Titanium dioxide nanoparticles (TiO2 NPs), a food additive widely used for livestock, have been shown to promote animal growth and increase the protein synthesis in animals. However, no studies on effect of TiO2 NPs on fibroin synthesis in B. mori have been available. In this study, the differential expression profiles of genes and proteins in the silk gland of B. mori fed without or with TiO2 NPs (5 μg ml(-1)) were analyzed and compared using digital gene expression (DGE), reverse transcription quantitative polymerase chain reaction (RT-qPCR), semi-qPCR, and Western blot analysis. The effects of TiO2 NPs feeding on the activity of proteases in the midgut and the synthesis and transportation of amino acids in hemolymph were also investigated. DGE analyses showed that among a total of 4,741 genes detected, 306 genes were differentially expressed after the TiO2 NPs feeding, of which 137 genes were upregulated whereas 169 genes were downregulated. 106 genes were shown to be involved in fibroin synthesis, of which 97 genes, including those encoding cuticular protein glycine-rich 10, serine protease inhibitor 28, aspartate aminotransferase, lysyl-tRNA synthetase, and splicing factor arginine/serine-rich 6, and silk gland factor-1 (SGF-1), were upregulated with the maximum induction of 8.52-folds, whereas nine genes, including those encoding aspartylglucosaminidase, the cathepsin L in Tribolium castaneum, and similar to SPRY domain-containing SOCS box protein 3, were downregulated with the maximum reduction of 8.11-folds. Transcription levels of nine genes were further verified by RT-qPCR, and the results were consistent with those with DGE. Transcription and expression levels of fibroin light chain (Fib-L) gene were increased after TiO2 NPs feeding, indicating that TiO2 NPs improves fibroin synthesis. Compared with that of control, the mean protease activity was increased by 56.67% in the B. mori fed with TiO2 NPs, and the transport of four key amino acids used for fibroin synthesis in hemolymph was also increased. These findings indicated that TiO2 NPs feeding can improve the absorption and utilization of amino acids from the feed and could be a new way to increase the fibroin synthesis in B. mori.
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93
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Yankun C, Zhihui T, Runxiao L, Shen W. SU-E-T-119: Analysis the Efficacy of Different Radiotherapy Methods and Failure Mode in No-Metastasis Esophageal Squamous Cell Carcinoma. Med Phys 2015. [DOI: 10.1118/1.4924480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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94
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Negoro E, Hosono N, Shen W, Przychozen B, Patel B, Tetsuichi Y, Brittney D, Cassandra H, Polprasert C, Clemente M, Sekeres M, Ogawa S, Makishima H, Maciejewski J. 66 SUBCLINICAL ANCESTRAL EVENTS FOR PROGRESSION TO MANIFEST CLONAL MYELODYSPLASIA ARE PRESENT IN APLASTIC ANEMIA AT PRESENTATION: COMPARISON OF DE NOVO AND POST AA MDS. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30067-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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95
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Zhu S, Shen W, Liu Z, Li J, Su J. PO-0697: Comparative study failure model esophageal carcinoma with elective nodal regional and involved field irradiation. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40689-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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96
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Edson-Heredia E, Banerjee S, Zhu B, Maeda-Chubachi T, Cameron G, Shen W, Heffernan M, Gordon K, Leonardi C. A high level of clinical response is associated with improved patient-reported outcomes in psoriasis: analyses from a phase 2 study in patients treated with ixekizumab. J Eur Acad Dermatol Venereol 2015; 30:864-5. [DOI: 10.1111/jdv.13032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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97
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Shen W, El Sayed Moussa M, Yao Y, Réau R, Lescop C. Correction: Supramolecular metallacycles with a ‘pseudo double-paracyclophane’ structure based on flexible π-conjugated linkers. Chem Commun (Camb) 2015; 51:15079. [DOI: 10.1039/c5cc90410b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Supramolecular metallacycles with a ‘pseudo double-paracyclophane’ structure based on flexible π-conjugated linkers’ by W. Shen et al., Chem. Commun., 2015, 51, 11560–11563.
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98
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Shen W, El Sayed Moussa M, Yao Y, Lescop C. Supramolecular metallacycles with a ‘pseudo double-paracyclophane’ structure based on flexible π-conjugated linkers. Chem Commun (Camb) 2015; 51:11560-3. [DOI: 10.1039/c5cc03778f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination-driven supramolecular synthesis of new supramolecular π-stacked metallacycles based on flexible π-conjugated linkers and having a ‘pseudo double-paracyclophane’ structure is presented.
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99
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Shen W, Yang G, Chen Y, Yan P, Tuo D, Li X, Zhou P. Resistance of non-transgenic papaya plants to papaya ringspot virus (PRSV) mediated by intron-containing hairpin dsRNAs expressed in bacteria. Acta Virol 2014; 58:261-6. [PMID: 25283861 DOI: 10.4149/av_2014_03_261] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
RNA-mediated virus resistance based on natural antiviral RNA silencing has been exploited as a powerful tool for engineering virus resistance in plants. In this study, a conserved 3'-region (positions 9839-10117, 279 nt) of the capsid protein (CP) gene of papaya ringspot virus (PRSV), designated CP279, was used to generate an intron-containing hairpin RNA (ihpRNA) construct by one-step, zero-background ligation-independent cloning (OZ-LIC). The RNaseIII-deficient Escherichia coli strain M-JM109lacY was identified as the best choice for producing large quantities of specific ihpRNA-CP279. Resistance analyses and ELISA data verified that most papaya plants mechanically co-inoculated with TRIzol-extracted ihpRNA-CP279 and PRSV were resistant to PRSV, and resistance was maintained throughout the test period (>2 months post-inoculation). In contrast, a 1-2 day interval between sequential inoculation of PRSV and ihpRNA-CP279 did not result in complete protection against PRSV infection, but delayed the appearance of viral symptoms by 3 to 4 days. These findings indicate that direct mechanical inoculation of papaya plants with bacterially-expressed ihpRNA-CP279 targeting the PRSV CP gene can interfere with virus infection. This work lays a foundation for developing a non-transgenic approach to control PRSV by directly spraying plants with ihpRNA or crude bacterial extract preparations.
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100
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Shen W, Wang Y, Tuo D, Yan P, Yang Y, Li X, Zhou P. Agroinoculation of Carica papaya with infectious clones of papaya mosaic virus. Acta Virol 2014; 58:380-2. [PMID: 25518722 DOI: 10.4149/av_2014_04_380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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