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Cai Zhengdong

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https://www.readbyqxmd.com/read/28256528/human-eyelid-adipose-tissue-derived-schwann-cells-promote-regeneration-of-a-transected-sciatic-nerve
#1
Gangyang Wang, Lingling Cao, Yang Wang, Yingqi Hua, Zhengdong Cai, Jun Chen, Lulu Chen, Yuqing Jin, Lina Niu, Hua Shen, Yan Lu, Zunli Shen
Schwann cells (SCs) can promote the regeneration of injured peripheral nerves while the clinical application is limited by donor site complications and the inability to generate an ample amount of cells. In this study, we have isolated human eyelid adipose-derived Schwann cells (hE-SCs) from human eyelid adipose tissue and identified the cell phenotype and function. Using immunofluorescence and H &E staining, we detected subtle nerve fibers and SCs in human eyelid adipose tissue. Immunofluorescence staining indicated that hE-SCs expressed glial markers, such as S100, p75NTR GFAP, Sox10 and Krox20...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28212608/transcriptomic-dynamics-of-breast-cancer-progression-in-the-mmtv-pymt-mouse-model
#2
Ying Cai, Ruben Nogales-Cadenas, Quanwei Zhang, Jhih-Rong Lin, Wen Zhang, Kelly O'Brien, Cristina Montagna, Zhengdong D Zhang
BACKGROUND: Malignant breast cancer with complex molecular mechanisms of progression and metastasis remains a leading cause of death in women. To improve diagnosis and drug development, it is critical to identify panels of genes and molecular pathways involved in tumor progression and malignant transition. Using the PyMT mouse, a genetically engineered mouse model that has been widely used to study human breast cancer, we profiled and analyzed gene expression from four distinct stages of tumor progression (hyperplasia, adenoma/MIN, early carcinoma and late carcinoma) during which malignant transition occurs...
February 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28188923/arsenic-sulfide-induces-apoptosis-and-autophagy-through-the-activation-of-ros-jnk-and-suppression-of-akt-mtor-signaling-pathways-in-osteosarcoma
#3
Gangyang Wang, Tao Zhang, Wei Sun, Hongsheng Wang, Fei Yin, Zhuoying Wang, Dongqing Zuo, Mengxiong Sun, Zifei Zhou, Binhui Lin, Jing Xu, Yingqi Hua, Haoqing Li, Zhengdong Cai
Osteosarcoma is a common primary malignant bone tumor, the cure rate of which has stagnated over the past 25-30 years. Arsenic sulfide (As2S2), the main active ingredient of the traditional Chinese medicine realgar, has been proved to have antitumor efficacy in several tumor types including acute promyelocytic leukemia, gastric cancer and colon cancer. Here, we investigated the efficacy and mechanism of As2S2 in osteosarcoma both in vitro and in vivo. In this study, we demonstrated that As2S2 potently suppressed cell proliferation by inducing G2/M phase arrest in various osteosarcoma cell lines...
February 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28134330/associations-of-triglyceride-levels-with-longevity-and-frailty-a-mendelian-randomization-analysis
#4
Zuyun Liu, Stephen Burgess, Zhengdong Wang, Wan Deng, Xuefeng Chu, Jian Cai, Yinsheng Zhu, Jianming Shi, Xuejuan Xie, Yong Wang, Li Jin, Xiaofeng Wang
Observational studies suggest associations of triglyceride levels with longevity and frailty. This study aimed to test whether the associations are causal. We used data from the Rugao Longevity and Ageing Study, a population-based cohort study performed in Rugao, China. A variant in the APOA5 gene region (rs662799) was used as the genetic instrument. Mendelian randomization (MR) analyses were performed to examine the associations of genetically predicted triglycerides with two ageing phenotypes - longevity ( ≥95 years) and frailty (modified Fried frailty phenotype and Rockwood frailty index)...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105365/prognostic-significance-of-serum-lactate-dehydrogenase-levels-in-ewing-s-sarcoma-a-meta-analysis
#5
Suoyuan Li, Qing Yang, Hongsheng Wang, Zhuoying Wang, Dongqing Zuo, Zhengdong Cai, Yingqi Hua
A number of studies have investigated the role of serum lactate dehydrogenase (LDH) levels in patients with Ewing's sarcoma, although these have yielded inconsistent and inconclusive results. Therefore, the present study aimed to systematically review the published studies and conduct a meta-analysis to assess its prognostic value more precisely. Cohort studies assessing the prognostic role of LDH levels in patients with Ewing's sarcoma were included. A pooled hazard ratio (HR) with 95% confidence intervals (CIs) of overall survival (OS) or 5-year disease-free survival (DFS) was used to assess the prognostic role of the levels of serum LDH...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28103585/long-non-coding-rnas-in-osteosarcoma
#6
REVIEW
Ruiling Chen, Gangyang Wang, Ying Zheng, Yingqi Hua, Zhengdong Cai
Long non-coding RNAs (lncRNAs) with more than 200 nuleotides, have been explored to participate in various cancer types including osteosarcoma (OS), which is the most common kind of primary bone tumors with high morbidity in infants and adolescents. These oncogenic or tumor suppressive lncRNAs regulate OS pathogenesis, such as cell growth, proliferation, invasion, migration, metastasis and cell apoptosis, serve as independent prognostic biomarkers or play a significant role in multidrug resistance (MDR) in OS cells...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/27884196/palliative-treatment-of-pelvic-bone-tumors-using-radioiodine-125-i-brachytherapy
#7
Chongren Wang, Zhengqi Chen, Wei Sun, Yisilamu Yasin, Chuanyin Zhang, Xiaojun Ma, Jian Chen, Jiakang Shen, Yingqi Hua, Zhengdong Cai
BACKGROUND: Complete resection of pelvic bone tumors, especially recurrent and metastatic ones, is often impossible to achieve using conventional surgery. This study aimed to assess the benefits and adverse effects of computed tomography (CT)-guided radioiodine ((125)I) brachytherapy for inoperable recurrent and metastatic bone tumors of the pelvis. METHODS: This was a retrospective study of 22 patients with confirmed pelvic bone tumors (10 females and 12 males; 15-84 years; 21 with primary pelvic tumor and one with pelvic metastasis)...
November 25, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27754856/integrated-post-gwas-analysis-sheds-new-light-on-the-disease-mechanisms-of-schizophrenia
#8
Jhih-Rong Lin, Ying Cai, Quanwei Zhang, Wen Zhang, Rubén Nogales-Cadenas, Zhengdong D Zhang
Schizophrenia is a severe mental disorder with a large genetic component. Recent genome-wide association studies (GWAS) have identified many schizophrenia-associated common variants. For most of the reported associations, however, the underlying biological mechanisms are not clear. The critical first step for their elucidation is to identify the most likely disease genes as the source of the association signals. Here, we describe a general computational framework of post-GWAS analysis for complex disease gene prioritization...
December 2016: Genetics
https://www.readbyqxmd.com/read/27735939/natural-product-pectolinarigenin-inhibits-osteosarcoma-growth-and-metastasis-via-shp-1-mediated-stat3-signaling-inhibition
#9
Tao Zhang, Suoyuan Li, Jingjie Li, Fei Yin, Yingqi Hua, Zhouying Wang, Binhui Lin, Hongsheng Wang, Dongqing Zou, Zifei Zhou, Jing Xu, Chengqing Yi, Zhengdong Cai
Signal transducer and activator of transcription 3 (STAT3) has important roles in cancer aggressiveness and has been confirmed as an attractive target for cancer therapy. In this study, we used a dual-luciferase assay to identify that pectolinarigenin inhibited STAT3 activity. Further studies showed pectolinarigenin inhibited constitutive and interleukin-6-induced STAT3 signaling, diminished the accumulation of STAT3 in the nucleus and blocked STAT3 DNA-binding activity in osteosarcoma cells. Mechanism investigations indicated that pectolinarigenin disturbed the STAT3/DNA methyltransferase 1/HDAC1 histone deacetylase 1 complex formation in the promoter region of SHP-1, which reversely mediates STAT3 signaling, leading to the upregulation of SHP-1 expression in osteosarcoma...
October 13, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27624867/alternol-a-natural-compound-exerts-an-anti-tumour-effect-on-osteosarcoma-by-modulating-of-stat3-and-ros-mapk-signalling-pathways
#10
Dongqing Zuo, Zifei Zhou, Hongsheng Wang, Tao Zhang, Jie Zang, Fei Yin, Wei Sun, Jiepeng Chen, Lili Duan, Jing Xu, Zhuoying Wang, Chongren Wang, Binhui Lin, Zeze Fu, Yuxin Liao, Suoyuan Li, Mengxiong Sun, Yingqi Hua, Longpo Zheng, Zhengdong Cai
Osteosarcoma (OS) is the most frequent primary malignant bone tumour. Alternol, a novel compound purified from microbial fermentation products exerts anti-tumour effects across several cancer types. The effect of alternol on human OS remains to be elucidated. We first evaluated the anti-tumour effect of alternol in several human OS cell lines in vitro and investigated its underlying mechanism. Alternol inhibited OS cell proliferation, migration and induced caspase-dependent apoptosis, G2/M cell cycle arrest in a dose and time-dependent manner...
February 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27556355/cd151-mediated-adhesion-is-crucial-to-osteosarcoma-pulmonary-metastasis
#11
Zhuoying Wang, Chongren Wang, Zifei Zhou, Mengxiong Sun, Chenghao Zhou, Jian Chen, Fei Yin, Hongsheng Wang, Binhui Lin, Dongqing Zuo, Suoyuan Li, Lijin Feng, Zhenfeng Duan, Zhengdong Cai, Yingqi Hua
CD151, a tetraspanin family protein involved in cell-cell and cell-extracellular matrix interaction, is differentially expressed in osteosarcoma cell membranes. Thus, this study aimed to investigate the role of CD151 in osteosarcoma metastasis. We analyzed CD151 expression in patient tissue samples using immunohistochemistry. CD151 expression was also silenced with shRNA in osteosarcoma cells of high metastatic potential, and cell adhesion, migration and invasion were evaluated in vitro and pulmonary metastasis was investigated in vivo...
September 13, 2016: Oncotarget
https://www.readbyqxmd.com/read/27449149/microrna-expression-and-gene-regulation-drive-breast-cancer-progression-and-metastasis-in-pymt-mice
#12
Ruben Nogales-Cadenas, Ying Cai, Jhih-Rong Lin, Quanwei Zhang, Wen Zhang, Cristina Montagna, Zhengdong D Zhang
BACKGROUND: MicroRNAs (miRNAs) are small non-coding RNA molecules of about 22 nucleotides which function to silence the expression of their target genes. Numerous studies have shown that miRNAs are not only key regulators in important cellular processes but are also drivers in the development of many diseases, especially cancer. Estrogen receptor positive luminal B is the second most common but the least studied subtype of breast cancer. Only a few studies have examined the expression profiles of miRNAs in luminal B breast cancer, and their regulatory roles in cancer progression have yet to be investigated...
2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27396977/p-glycoprotein-overexpression-in-bone-marrow-derived-multipotent-stromal-cells-decreases-the-risk-of-steroid-induced-osteonecrosis-in-the-femoral-head
#13
Ning Han, Zengchun Li, Zhengdong Cai, Zuoqin Yan, Yingqi Hua, Chong Xu
P-glycoprotein (P-gp) plays a role in steroid-induced osteonecrosis of the femoral head (ONFH), but the underlying mechanism remains unknown. We hypothesized that P-gp overexpression can prevent ONFH by regulating bone marrow-derived multipotent stromal cell (BMSC) adipogenesis and osteogenesis. BMSCs from Sprague-Dawley rats were transfected with green fluorescent protein (GFP) or the multidrug resistance gene 1 (MDR1) encoding GFP and P-gp. Dexamethasone was used to induce BMSC differentiation. Adipogenesis was determined by measuring peroxisome proliferator-activated receptor (PPAR-γ) expression and the triglyceride level...
July 11, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27353415/bioinformatics-analysis-of-differentially-expressed-pathways-related-to-the-metastatic-characteristics-of-osteosarcoma
#14
Wei Sun, Xiaojun Ma, Jiakang Shen, Fei Yin, Chongren Wang, Zhengdong Cai
In this study, gene expression data of osteosarcoma (OSA) were analyzed to identify metastasis-related biological pathways. Four gene expression data sets (GSE21257, GSE9508, GSE49003 and GSE66673) were downloaded from Gene Expression Omnibus (GEO). An analysis of differentially expressed genes (DEGs) was performed using the Significance Analysis of Microarray (SAM) method. Gene expression levels were converted into scores of pathways by the Functional Analysis of Individual Microarray Expression (FAIME) algorithm and the differentially expressed pathways (DEPs) were then disclosed by a t-test...
August 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27352130/comparison-of-venous-thromboembolism-after-total-artificial-joint-replacement-between-musculoskeletal-tumors-and-osteoarthritis-of-the-knee-by-a-single-surgeon
#15
Dong Fu, Yiqiong Zhao, Jiakang Shen, Zhengdong Cai, Yingqi Hua
The purpose of this study was to compare and evaluate the event of VTE (Venous Thromboembolism Event) after total artificial joint replacement between two groups diagnosed with either musculoskeletal tumors or osteoarthritis (OA) of the knee. From 2004 to 2014, a total of 1,402 patients (308 in tumor group, 1,094 in OA group) were involved in this study. The rate of asymptomatic DVT (Deep vein thrombosis) was significantly higher in tumor group when compared with OA group. Though both the incidence of symptomatic DVT and PE (Pulmonary embolism) were slightly higher in tumor group, no significant difference was detected...
2016: PloS One
https://www.readbyqxmd.com/read/27179790/systems-level-analysis-of-human-aging-genes-shed-new-light-on-mechanisms-of-aging
#16
Quanwei Zhang, Ruben Nogales-Cadenas, Jhih-Rong Lin, Wen Zhang, Ying Cai, Jan Vijg, Zhengdong D Zhang
Although studies over the last decades have firmly connected a number of genes and molecular pathways to aging, the aging process as a whole still remains poorly understood. To gain novel insights into the mechanisms underlying aging, instead of considering aging genes individually, we studied their characteristics at the systems level in the context of biological networks. We calculated a comprehensive set of network characteristics for human aging-related genes from the GenAge database. By comparing them with other functional groups of genes, we identified a robust group of aging-specific network characteristics...
July 15, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/27113445/benzochloroporphyrin-derivative-photosensitizer-mediated-photodynamic-therapy-for-ewing-sarcoma
#17
Mengxiong Sun, Chenghao Zhou, Hui Zeng, Fei Yin, Zhuoying Wang, Jianzhong Yao, Yingqi Hua, Zhengdong Cai
In this study, we evaluated the photodynamic efficacy of a new photosensitizer, benzochloroporphyrin derivative 18 (BCPD-18), in Ewing sarcoma. We found that BCPD-18 decreased the viability of TC-71 cells irradiated by 670nm laser in a concentration dependent manner. We also observed cells undergoing apoptosis as well as cell cycle arrest at the G2M phase after BCPD-18-mediated photodynamic therapy (BCPD-PDT). In addition, in vivo study (subcutaneous and orthotopic models) showed that BCPD-PDT reduced tumor size, tumor weight and tumor-bearing leg weight...
July 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/27001215/psca-rs2294008-polymorphism-contributes-to-the-decreased-risk-for-cervical-cancer-in-a-chinese-population
#18
Shizhi Wang, Shenshen Wu, Haixia Zhu, Bo Ding, Yunlang Cai, Jing Ni, Qiang Wu, Qingtao Meng, Xin Zhang, Chengcheng Zhang, Xiaobo Li, Meilin Wang, Rui Chen, Hua Jin, Zhengdong Zhang
Recently, three genome-wide association studies have identified the PSCA (prostate stem cell antigen) rs2294008 polymorphism (C > T) associated with susceptibility to gastric cancer, bladder cancer, and duodenal ulcers, highlighting its critical role in disease pathogenesis. Given PSCA is reported to be overexpressed in cervical cancer and the rs2294008 can influence PSCA transcription, we aimed to determine the role of rs2294008 in susceptibility to cervical cancer. The genotyping was performed in the 1126 cases and 1237 controls...
March 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/26830973/the-influence-of-genetic-variants-of-sorafenib-on-clinical-outcomes-and-toxic-effects-in-patients-with-advanced-renal-cell-carcinoma
#19
MULTICENTER STUDY
Chao Qin, Qiang Cao, Pu Li, Shangqian Wang, Jian Wang, Meilin Wang, Haiyan Chu, Liqun Zhou, Xuesong Li, Dingwei Ye, Hailiang Zhang, Yiran Huang, Baijun Dong, Xiaofeng Sun, Qing Zou, Hongzhou Cai, Lijiang Sun, Jian Zhu, Fade Liu, Junbiao Ji, Li Cui, Xiaoxiang Wang, Hai Zhou, Hu Zhao, Bin Wu, Jianchun Chen, Minjun Jiang, Zhengdong Zhang, Pengfei Shao, Xiaobing Ju, Changjun Yin
The purpose of the present study was to investigate whether genetic variants that influence angiogenesis and sorafenib pharmacokinetics are associated with clinical outcomes and toxic effects in advanced renal cell carcinoma patients treated with this drug. One hundred patients with advanced renal cell carcinoma were enrolled. Forty-two polymorphisms in 15 genes were selected for genotyping and analyzed for associations with progression-free survival, overall survival, and toxic effects. We found that rs1570360 in VEGF and rs2239702 in VEGFR2 were significantly associated with progression-free...
February 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/26707878/nanog-interact-with-cdk6-to-regulates-astrocyte-cells-proliferation-following-spinal-cord-injury
#20
Jun Gu, Yingjie Ni, Lin Xu, Hongliang Xu, Zhengdong Cai
Previous research had reported transcription factors Nanog expressed in pluripotent embryonic stem cells (ESCS) that played an important role in regulating the cell proliferation. Nanog levels are frequently elevated in ESCS, but the role in the spinal cord was not clear. To examine the biological relevance of Nanog, we studied its properties in spinal cord injury model. The expression of Nanog and PCNA was gradually increased and reached a peak at 3 day by western blot analysis. The expression of Nanog was further analyzed by immunohistochemistry...
January 22, 2016: Biochemical and Biophysical Research Communications
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