Yi Wang

Fudan University, Shanghai, Shanghai Shi, China

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Publications (210)818.52 Total impact

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    ABSTRACT: The aim of this study is to investigate the remission rate of rheumatoid arthritis (RA) in China and identify its potential determinants. A multi-center cross-sectional study was conducted from July 2009 to January 2012. Data were collected by face-to-face interviews of the rheumatology outpatients in 28 tertiary hospitals in China. The remission rates were calculated in 486 RA patients according to different definitions of remission: the Disease Activity Score in 28 joints (DAS28), the Simplified Disease Activity Index (SDAI), the Clinical Disease Activity Index (CDAI), and the American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) Boolean definition. Potential determinants of RA remission were assessed by univariate and multivariate analyses. The remission rates of RA from this multi-center cohort were 8.6 % (DAS28), 8.4 % (SDAI), 8.2 % (CDAI), and 6.8 % (Boolean), respectively. Favorable factors associated with remission were: low Health Assessment Questionnaire (HAQ) score, absence of rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP), and treatment of methotrexate (MTX) and hydroxychloroquine (HCQ). Younger age was also predictive for the DAS28 and the Boolean remission. Multivariate analyses revealed a low HAQ score, the absence of anti-CCP, and the treatment with HCQ as independent determinants of remission. The clinical remission rate of RA patients was low in China. A low HAQ score, the absence of anti-CCP, and HCQ were significant independent determinants for RA remission.
    Clinical rheumatology. 11/2014;
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    ABSTRACT: C3H10T1/2-developed adipocytes were used as models of brown-like adipocytes.•NPY has no effect on brown adipogenesis of C3H10T1/2 stem cell.•NPY suppresses activation of the C3H10T1/2-developed adipocytes.•NPY exhibits its role in a receptor dependent manner.•NPY exhibits its role via cAMP-PKA dependent pathway.
    Peptides 11/2014; · 2.52 Impact Factor
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    ABSTRACT: A multi-walled carbon nanotubes (MWNTs) bridged mesocellular graphene foam (MGF) nanocomposite (MWNTs/MGF) modified glassy carbon electrode was fabricated and successfully used for simultaneous determination of ascorbic acid (AA), dopamine (DA), uric acid (UA) and tryptophan (TRP). Comparing with pure MGF, MWNTs or MWNTs/GS (graphene sheets), MWNTs/MGF displayed higher catalytic activity and selectivity toward the oxidation of AA, DA, UA and TRP. Under the optimal conditions, MWCNs/MGF/GCE can simultaneously detect AA, DA, UA and TRP with high selectivity and sensitivity. The detection limits were 18.28µmolL(-1), 0.06µmolL(-1), 0.93µmolL(-1) and 0.87µmolL(-1), respectively. Moreover, the modified electrode exhibited excellent stability and reproducibility.
    Talanta 09/2014; 127:255-61. · 3.50 Impact Factor
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    ABSTRACT: The genes that encode inhibitor of apoptosis proteins (IAPs) are frequently overexpressed in human cancers. However, the expression pattern and clinical significance of BIRC6, a member of IAPs, in hepatocellular carcinoma (HCC) remains unclear. Here we investigated the role of BIRC6 in hepatocellular carcinogenesis. We used immunoblot and immunochemical analyses to determine the levels of BIRC6 in 7 hepatoma cell lines and 160 HCC specimens. We evaluated the proognostic value of BIRC6 expression and its association with clinical parameters. A lentivirus-mediated silencing method was used to knockdown BIRC6, and the biological consequences of BIRC6 silencing in three hepatoma cell lines were investigated in vitro and in vivo. We found that BIRC6 overexpression was significantly correlated with serum ALT level and HCC vascular invasion. Patients with positive BIRC6 expression in tumor tissue had a poor survival and a high rate of recurrence. BIRC6 knockdown remarkably suppressed cell proliferation, caused G1/S arrest and sensitized hepatoma cells to sorafenib-induced apoptosis in hepatoma cells, which was partly reversed by RNA interference targeting p53. The mechanistic study revealed that BIRC6 interacted with p53 and facilitated its degradation. The in vivo study showed that BIRC6 knockdown inhibited xenograft tumor growth and increased the sensitivity of tumor cells to sorafenib in nude mice. Taken together, these findings demonstate that BIRC6 overexpression in HCC specimens is indicative of poor prognosis and that its interaction with p53 facilitates the degradation of p53, leading to carcinogenesis and an anti-apoptotic status. © 2014 Wiley Periodicals, Inc.
    International Journal of Cancer 09/2014; · 6.20 Impact Factor
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    ABSTRACT: Demographic change of human populations is one of the central questions for delving into the past of human beings. To identify major population expansions related to male lineages, we sequenced 78 East Asian Y chromosomes at 3.9 Mbp of the non-recombining region (NRY), discovered >4,000 new SNPs, and identified many new clades. The relative divergence dates can be estimated much more precisely using molecular clock. We found that all the Paleolithic divergences were binary; however, three strong star-like Neolithic expansions at ~6 kya (thousand years ago) (assuming a constant substitution rate of 1e-9/bp/year) indicates that ~40% of modern Chinese are patrilineal descendants of only three super-grandfathers at that time. This observation suggests that the main patrilineal expansion in China occurred in the Neolithic Era and might be related to the development of agriculture.
    PLoS ONE 08/2014; · 3.53 Impact Factor
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    ABSTRACT: Lung cancer, especially non-small cell lung cancer (NSCLC), is the leading cause of cancer-related deaths all over the world. Studies have indicated that molecular biomarkers, including genetic variants, may provide additional values for the targeted treatments and clinical outcomes of NSCLC patients. To better understand the effects of molecular biomarkers on the treatment of NSCLC, we conducted a genome-wide analysis to investigate the prognostic implications of genetic variants in early-stage NSCLC patients with surgery.
    Annals of Surgical Oncology 08/2014; · 4.12 Impact Factor
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    ABSTRACT: The LigaSure vessel sealing system allows dissection and hemostasis in a safe and quick way, and it has been reported to be an effective tool to shorten operative time and reduce intraoperative blood loss for various surgeries. However, short- and long-term outcomes in comparison with conventional surgery for gastric cancer resection are limited.
    Gastric Cancer 08/2014; · 3.99 Impact Factor
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    ABSTRACT: Abstract A genetic etiology for autism spectrum disorders (ASDs) was first suggested from twin studies reported in the 1970s. The identification of gene mutations in syndromic ASDs provided evidence to support a genetic cause of ASDs. More recently, genome-wide copy number variant and sequence analyses have uncovered a list of rare and highly penetrant copy number variants (CNVs) or single nucleotide variants (SNVs) associated with ASDs, which has strengthened the claim of a genetic etiology for ASDs. Findings from research studies in the genetics of ASD now support an important role for molecular diagnostics in the clinical genetics evaluation of ASDs. Various molecular diagnostic assays including single gene tests, targeted multiple gene panels and copy number analysis should all be considered in the clinical genetics evaluation of ASDs. Whole exome sequencing could also be considered in selected clinical cases. However, the challenge that remains is to determine the causal role of genetic variants identified through molecular testing. Variable expressivity, pleiotropic effects and incomplete penetrance associated with CNVs and SNVs also present significant challenges for genetic counseling and prenatal diagnosis.
    Critical reviews in clinical laboratory sciences. 05/2014;
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    ABSTRACT: Infantile spasm (IS) is a specific type of epileptic encephalopathy associated with severe developmental disabilities. Genetic factors are strongly implicated in IS, however, the exact genetic defects remain unknown in the majority of cases. Rare mutations in a single gene or in copy number variants (CNVs) have been implicated in IS of children in Western countries. The objective of this study was to dissect the role of copy number variations in Chinese children with infantile spasm.
    BMC Medical Genetics 05/2014; 15(1):62. · 2.54 Impact Factor
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    ABSTRACT: To investigate differences in genetic risk factors for rheumatoid arthritis (RA) in Han Chinese as compared with Europeans. A genome-wide association study was conducted in China with 952 patients and 943 controls, and 32 variants were followed up in 2,132 patients and 2,553 controls. A transpopulation meta-analysis with results from a large European RA study was also performed to compare the genetic architecture across the 2 ethnic remote populations. Three non-major histocompatibility complex (non-MHC) loci were identified at the genome-wide significance level, the effect sizes of which were larger in anti-citrullinated protein antibody (ACPA)-positive patients than in ACPA-negative patients. These included 2 novel variants, rs12617656, located in an intron of DPP4 (odds ratio [OR] 1.56, P = 1.6 × 10(-21) ), and rs12379034, located in the coding region of CDK5RAP2 (OR 1.49, P = 1.1 × 10(-16) ), as well as a variant at the known CCR6 locus, rs1854853 (OR 0.71, P = 6.5 × 10(-15) ). The analysis of ACPA-positive patients versus ACPA-negative patients revealed that rs12617656 at the DPP4 locus showed a strong interaction effect with ACPAs (P = 5.3 × 10(-18) ), and such an interaction was also observed for rs7748270 at the MHC locus (P = 5.9 × 10(-8) ). The transpopulation meta-analysis showed genome-wide overlap and enrichment in association signals across the 2 populations, as confirmed by prediction analysis. This study has expanded the list of alleles that confer risk of RA, provided new insight into the pathogenesis of RA, and added empirical evidence to the emerging polygenic nature of complex trait variation driven by common genetic variants.
    Arthritis & rheumatology (Hoboken, N.J.). 05/2014; 66(5):1121-1132.
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    ABSTRACT: Introgressions from Neanderthals and Denisovans were detected in modern humans. Introgressions from other archaic hominins were also implicated, however, identification of which poses a great technical challenge. Here, we introduced an approach in identifying introgressions from all possible archaic hominins in Eurasian genomes, without referring to archaic hominin sequences. We focused on mutations emerged in archaic hominins after their divergence from modern humans (denoted as archaic-specific mutations), and identified introgressive segments which showed significant enrichment of archaic-specific mutations over the rest of the genome. Furthermore, boundaries of introgressions were identified using a dynamic programming approach to partition whole genome into segments which contained different levels of archaic-specific mutations. We found that detected introgressions shared more archaic-specific mutations with Altai Neanderthal than they shared with Denisovan, and 60.3% of archaic hominin introgressions were from Neanderthals. Furthermore, we detected more introgressions from two unknown archaic hominins whom diverged with modern humans approximately 859 and 3,464 thousand years ago. The latter unknown archaic hominin contributed to the genomes of the common ancestors of modern humans and Neanderthals. In total, archaic hominin introgressions comprised 2.4% of Eurasian genomes. Above results suggested a complex admixture history among hominins. The proposed approach could also facilitate admixture research across species.
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    ABSTRACT: To explore the prevalence and characteristics of main organ involvement in adult patients with polymyositis (PM) or dermatomyositis (DM) and determine their specific relative factors. Using unified questionnaire, we retrospectively collected the medical records of 1 387 confirmed adult PM/DM patients from 2007 to 2012 at 22 rheumatology centers in China. Statistical analyses were performed with chi-square or Fisher exact test and multivariate analyses with logistic regression. A total of 1 387 patients were collected with 460 (33.2%) PM and 927 (66.8%) DM. The female:male ratio was 2.4: 1. Their onset age was ( 47 ± 14) years. A total of 1 031 (74.3%) patients had organ involvement. The prevalence of pulmonary involvement, arthritis, gastrointestinal and cardiac involvement were 44.6%, 32.3%, 21.9% and 20.3% respectively. The multivariate analysis indicated that older onset age (P < 0.01) was positively associated with pulmonary involvement while myalgia (P < 0.05) was negatively associated. Fever (P < 0.05), weight loss (P < 0.05) and Raynaud's phenomenon (P < 0.01) were positively associated with arthritis while muscle weakness (P < 0.05) negatively associated. Weight loss (P < 0.05), Raynaud's phenomenon (P < 0.01) and muscle weakness (P < 0.05) were positively associated with gastrointestinal involvement. Weight loss (P < 0.05) and swollen limbs (P < 0.05) were positively associated with cardiac involvement. The prevalence of organ involvement is high in adult PM/DM patients. Our study may aid the diagnosis of organ damage in PM/DM patients.
    Zhonghua yi xue za zhi 01/2014; 94(1):43-6.
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    ABSTRACT: Surgical resection is currently indicated for all potentially resectable intrahepatic cholangiocarcinoma (ICC), but the survival outcomes and the prognostic factors have not been well-documented due to its rarity. This study aims to assess these in a large, consecutive series of patients with ICC treated surgically. A retrospective study was conducted on 1,333 ICC patients undergoing surgery between January 2007 and December 2011. Surgical results and survival were evaluated and compared among different subgroups of patients. Univariate and multivariate analyses were performed to identify prognostic factors. R0, R1, R2 resection and exploratory laparotomy were obtained in 34.8, 44.9, 16.4, and 3.9 % of the patients, respectively. The overall 1-, 3-, and 5-year survival rates for the entire cohort were 58.2, 25.2, and 17.0 %, respectively, with corresponding rates of 79.1, 42.6, and 28.7 % for patients with R0 resection; 60.5, 20.1, and 13.9 % for patients with R1 resection; 20.5, 7.4, and 0 % for patients with R2 resection; and 3.8, 0, and 0 % for patients with an exploratory laparotomy. Independent factors for poor survival included positive resection margin, lymph node metastasis, multiple tumors, vascular invasion, and elevated CA19-9 and/or CEA, whereas hepatitis B virus infection and cirrhosis were independently favorable prognosis indicators. R0 resection offers the best possibility of long-term survival, but the chance of a R0 resection is low when surgery is performed for potential resectable ICC. Further randomized trials are warranted to refine indications for surgery in the management of ICC.
    Journal of Gastrointestinal Surgery 01/2014; · 2.36 Impact Factor
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    ABSTRACT: Background: Children are recognized as "therapeutic orphan" in many parts of the world, one expression of this is the lack of adequate pediatric labeling information. Some research studies have been done to investigate the pediatric labeling condition in the U.S. and other countries, but no national studies had been carried out in China. This survey was conducted aiming to inquire the current situation of pediatric labeling in China. Methods: We investigated 6020 child-applied medicines from 15 representative Chinese hospitals, and analyzed the information according to the dosage forms, therapeutic category, and label information integrity. Results: Among all these medicines, only 238 (3.95%) are pediatric products, the rest are adult formulations with an extended use in children. The major pediatric formulations were injection (45.95%), tablet (23.69%), and capsule (4.93%), respectively. Alimentary tract/metabolism medicine (24.70%) and infections medicines (20.60%) had the most species. In prescription drugs, only 210 of 5187 (4%) medicines had adequate pediatric labeling information. The main cause of this deficiency was lack of evidence derived from pediatric clinical trials. Conclusion: The dilemma of "therapeutic orphan" requires significant attention. Inadequate labeling information and lack of pediatric clinical trials were two prominent issues in China. It calls for more efforts from pharmaceutical industries, regulatory agencies, and legislature in China to collaborate and find solution to improve the situation.
    Frontiers in Pediatrics 01/2014; 2:17.
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    ABSTRACT: Single nucleotide polymorphisms (SNPs) in apolipoprotein A5 (APOA5) gene are associated with triglyceride (TG) levels. However, the minor allele frequencies and linkage disequilibriums (LDs) of the SNPs in addition to their effects on TG levels vary greatly between Caucasians and East Asians. The distributions of the SNPs/haplotypes and their associations with TG levels in Uyghur population, an admixture population of Caucasians and East Asians, have not been reported to date. Here, we performed a cross-sectional study to address these.
    PLoS ONE 01/2014; 9(10):e110258. · 3.53 Impact Factor
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    ABSTRACT: Systemic sclerosis (SSc) is a complex disease involving multiple genetic factors. A recent genome-wide association study (GWAS) indicated that CD247 was strongly associated with SSc, which was subsequently confirmed in a SSc cohort of European population. However, genetic heterogeneity in different ethnic populations may significantly impact the complex trait of SSc. The studies herein aimed to examine whether the SSc-associated SNP rs2056626 of CD247 identified in Caucasian is also associated with Han Chinese SSc. A Han Chinese cohort consisting of 387 SSc patients and 523 healthy controls were examined in the studies. TaqMan assays were performed to examine the SNP. Exact p-values were obtained (Fisher's test) from 2x2 tables of allele counts and disease status. The results showed that there was no association between rs2056626 of CD247 and SSc or any SSc subtypes of Han Chinese. The negative results are important in understanding genetics of SSc in different ethnic populations, which further suggest complex nature of genetics of SSc.
    The open rheumatology journal. 01/2014; 8:43-5.
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    ABSTRACT: Systemic lupus erythematosus (SLE) is a polygenic, systemic, autoimmune disease. Copy number variants (CNVS) have been discovered to be associated with a number of complex disorders. We undertook the current study to explore the potential associations between genomic CNVS and SLE in Chinese Han population. In the discovery stage, seven SLE patients were examined with the high-density comparative genomic hybridization microarrays in the screening test for SLE associated CNVS. Then, in the validation stage, 135 SLE patients and 219 matched healthy subjects were investigated for the CNVS of gene HLA-DRB5 by AccuCopy™ technology. Quantitative polymerase chain reaction was carried out to determine the copy number (CN) and mRNA level of HLA-DRB5 in SLE patients. Although the mRNA level of HLA-DRB5 between the CN deletion group and the CN normal group in SLE patients was not statistically positive (P = 0.46), our results still showed more CN of HLA-DRB5 in SLE patients than in healthy controls (P = 3.98 × 10(-6)). Odds ratio for CN deletion was 0.38 (95% confidence interval (CI), 0.23-0.61, P = 7.79 × 10(-5)) and for CN duplication was 1.89 (95% CI, 0.56-7.66, P = 0.37), respectively. These findings indicated that CNVS of HLA-DRB5 was associated with the risk of SLE, and CN deletion appeared to be protective for SLE.
    Acta Biochimica et Biophysica Sinica 12/2013; · 1.81 Impact Factor
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    ABSTRACT: Previous studies have proven the existence of active brown adipose tissue (BAT) in adults; however, its effect on systematic metabolism remains unclear. The current study was designed to investigate the differences in the metabolic profiles of healthy adults with and without active BAT using positron emission tomography-computed tomography (PET-CT) scans in the un-stimulated state. A cross-sectional analysis was performed to assess the health of adults using PET-CT whole-body scans at Huashan Hospital Medical Centre between November 2009 and May 2010. A total of 62 healthy adults with active BAT were enrolled in the BAT-positive group. For each positive subject, a same-gender individual who underwent PET-CT the same day and who had no detectable BAT was chosen as the negative control. Body composition was measured, and blood samples were collected for assays of metabolic profiles and other biomarkers. In both the male and female groups, BAT-positive individuals were younger and had lower body mass indexes, fasting insulin, insulin resistance, and leptin, but a greater level of high-density lipoprotein cholesterol compared with the negative controls. In the male group, body fat content and levels of tumor necrosis factor-α were significantly lower in the BAT-positive than in the negative control group. The healthy adults with active BAT in an un-stimulated state had favorable metabolic profiles suggesting that active BAT may be a potential target for preventing and treating obesity and other metabolic disorders.
    Wiener klinische Wochenschrift 10/2013; · 0.81 Impact Factor
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    ABSTRACT: Primary Sjögren's syndrome is one of the most common autoimmune diseases. So far, genetic studies of Sjögren's syndrome have relied mostly on candidate gene approaches. To identify new genetic susceptibility loci for primary Sjögren's syndrome, we performed a three-stage genome-wide association study in Han Chinese. In the discovery stage, we analyzed 556,134 autosomal SNPs in 542 cases and 1,050 controls. We then validated promising associations in 2 replication stages comprising 1,303 cases and 2,727 controls. The combined analysis identified GTF2I at 7q11.23 (rs117026326: Pcombined = 1.31 × 10(-53), combined odds ratio (ORcombined) = 2.20) as a new susceptibility locus for primary Sjögren's syndrome. Our analysis also confirmed previously reported associations in Europeans in the regions of STAT4, TNFAIP3 and the major histocompatibility complex (MHC). Fine mapping of the region around GTF2I showed that rs117026326 in GTF2I had the most significant association, with associated SNPs extending from GTF2I to GTF2IRD1-GTF2I.
    Nature Genetics 10/2013; · 35.21 Impact Factor
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    ABSTRACT: Studies investigating the association between genetic polymorphism of glutathione S-transferase T1 (GSTT1) and hepatocellular carcinoma (HCC) risk have reported conflicting results. Therefore, we conducted this meta-analysis to provide more precise evidence. Databases including PubMed, Embase, SCOPUS, ISI Web of Science, and Wangfang were searched for relevant studies. Potential sources of heterogeneity were also assessed by subgroup analysis. Funnel plots and Egger's linear regression were used to test publication bias among the articles. Finally, a total of 28 studies involving 3,897 HCC patients and 6,117 controls were included in this meta-analysis. In a combined analysis, the summary odds ratio for HCC of the GSTT1 null genotype was 1.43 (95 % confidence interval (CI) 1.22-1.68, P < 10(-5)). In the subgroup analysis by ethnicity, significantly increased risks were found in East Asians for GSTT1 null polymorphism, while no significant associations were found among Caucasian, South Asian, and African populations. When stratified by a source of controls, both population- and hospital-based studies get consistent positive results. By pooling data from 10 studies (1,639 cases and 2,224 controls) that considered combinations of GSTT1 and GSTM1 genotypes, a statistically significant increased risk for HCC (odd ratio = 1.85, 95 % CI 1.37-2.49) was detected for individuals with combined deletion mutations in both genes compared with positive genotypes. No evidence of publication bias was observed. Our result suggests that the GSTT1 null genotype contributes to an increased risk of HCC in East Asians and that interaction between unfavorable GSTs genotypes may exist.
    Tumor Biology 08/2013; · 2.52 Impact Factor

Publication Stats

5k Citations
818.52 Total Impact Points


  • 2006–2014
    • Fudan University
      • • School of Life Sciences
      • • Department of Neurology
      • • School of Pharmacy
      • • Department of Electronic Engineering
      Shanghai, Shanghai Shi, China
    • Cancer Research and Biostatistics
      Seattle, Washington, United States
  • 2013
    • Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
      Shanghai, Shanghai Shi, China
  • 2012–2013
    • Kunming Institute of Zoology CAS
      • State Key Laboratory of Genetic Resources and Evolution
      Kunming, Yunnan, China
    • Peking University People's Hospital
      Peping, Beijing, China
  • 2003–2013
    • Second Military Medical University, Shanghai
      • Department of Anesthesiology
      Shanghai, Shanghai Shi, China
    • Chinese Academy of Medical Sciences
      Peping, Beijing, China
    • State Key Laboratory of Medical Genetics of China
      Ch’ang-sha-shih, Hunan, China
  • 2009–2011
    • Chinese Academy of Sciences
      • Institute of Applied Ecology
      Peping, Beijing, China
    • Shanghai Institutes for Biological Sciences
      Shanghai, Shanghai Shi, China
  • 2007–2011
    • Shanghai Jiao Tong University
      • • School of Medicine
      • • Institute of Medical Genetics
      Shanghai, Shanghai Shi, China
    • Shanghai Putuo District People's Hospital
      Shanghai, Shanghai Shi, China
    • The Scripps Research Institute
      La Jolla, California, United States
    • Broad Institute of MIT and Harvard
      Cambridge, Massachusetts, United States
  • 2006–2011
    • Nanjing Medical University
      • • Key Laboratory of Modern Toxicology (MOE)
      • • Department of Epidemiology and Biostatistics
      Nanjing, Jiangsu Sheng, China
  • 2004–2011
    • Chinese National Human Genome Center at Shanghai
      Shanghai, Shanghai Shi, China
    • Chongqing Medical University
      Ch’ung-ch’ing-shih, Chongqing Shi, China
  • 2010
    • Government of the People's Republic of China
      Peping, Beijing, China
  • 2004–2010
    • Sun Yat-Sen University
      • • State Key Laboratory of Oncology
      • • Department of Hepatobiliary Surgery
      Guangzhou, Guangdong Sheng, China
  • 2008
    • Capital Medical University
      Peping, Beijing, China
  • 2003–2007
    • The University of Hong Kong
      • Department of Clinical Oncology
      Hong Kong, Hong Kong
  • 1999
    • Jichi Medical University
      • Department of Clinical Laboratory Medicine
      Totigi, Tochigi, Japan