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Wang J, Zhang Z, Cai Y, Lu J, Zhang H, Pang J, Wu H, Liang Z. A Comprehensive Study of Heterogeneous Mismatch Repair Expression in Solid Tumors Reveals Different Immunohistochemical Patterns and Distinct Genetic Mechanisms. Am J Surg Pathol 2024; 48:417-425. [PMID: 37997470 DOI: 10.1097/pas.0000000000002158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
OBJECTIVE Immunohistochemistry is routinely performed to detect mismatch repair deficiency in solid tumors. Heterogeneous MMR expression (MMR-het) has been reported occasionally but not systemically studied. METHODS In this study, we depicted MMR-het patterns of 40 tumors of different anatomical sites and analyzed MMR genetic alterations and tumor mutational burdens (TMB) through comprehensive genomic profiling. RESULTS The MMR-het patterns were classified into 4 subgroups: "single-loss" (3 cases), "MLH1/PMS2 double-loss" (16 cases), "MSH2/MSH6 double-loss" (8 cases), and "triple/tetra-loss" (13 cases). Seventeen MMR-het cases exhibited histological heterogeneity, in which MMR protein loss was generally confined to either poorly differentiated or well-differentiated tumor areas. All "single-loss" tumors had MMR somatic mutations and coexisting POLE exonuclease domain mutations. "MLH1/PMS2 double-loss" tumors unexceptionally harbored MLH1 hypermethylation without MMR germline mutations. In the "MSH2/MSH6 double-loss" subgroup, 4 cases had MSH2/MSH6 germline mutations, while another 4 cases had multiple MSH2/MSH6 somatic mutations. Additional POLE exonuclease domain mutations were identified in 2 cases. Tumors in the "triple/tetra-loss" subgroup generally had MLH1 abnormalities (8 MLH1 hypermethylation, 4 MLH1 germline mutation, 1 MLH1 double somatic mutations), and coexistent somatic mutations on MSH2/MSH6 . Thirty-one cases (83.8%) were TMB-H, and all POLE -mutated cases exhibited ultra-high TMB (111.4 to 524.2 mut/Mb). CONCLUSION Our findings highlighted the importance of accurately interpreting heterogeneous MMR protein staining patterns for developing a more efficient personalized genetic investigation strategy.
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Affiliation(s)
- Jing Wang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Diseases, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Chen S, Fan C, Xu Z, Pei M, Wang J, Zhang J, Zhang Y, Li J, Lu J, Peng C, Wei X. Mechanochemical synthesis of organoselenium compounds. Nat Commun 2024; 15:769. [PMID: 38278789 PMCID: PMC10817960 DOI: 10.1038/s41467-024-44891-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 01/09/2024] [Indexed: 01/28/2024] Open
Abstract
We disclose herein a strategy for the rapid synthesis of versatile organoselenium compounds under mild conditions. In this work, magnesium-based selenium nucleophiles are formed in situ from easily available organic halides, magnesium metal, and elemental selenium via mechanical stimulation. This process occurs under liquid-assisted grinding (LAG) conditions, requires no complicated pre-activation procedures, and operates broadly across a diverse range of aryl, heteroaryl, and alkyl substrates. In this work, symmetrical diselenides are efficiently obtained after work-up in the air, while one-pot nucleophilic addition reactions with various electrophiles allow the comprehensive synthesis of unsymmetrical monoselenides with high functional group tolerance. Notably, the method is applied to regioselective selenylation reactions of diiodoarenes and polyaromatic aryl halides that are difficult to operate via solution approaches. Besides selenium, elemental sulfur and tellurium are also competent in this process, which showcases the potential of the methodology for the facile synthesis of organochalcogen compounds.
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Affiliation(s)
- Shanshan Chen
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China
| | - Chunying Fan
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China
| | - Zijian Xu
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Mengyao Pei
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China
| | - Jiemin Wang
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China
| | - Jiye Zhang
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China
| | - Yilei Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Yanta, China
| | - Jiyu Li
- Xi'an Aisiyi Health Industry Co., Ltd, Xi'an, 710075, China
| | - Junliang Lu
- Xi'an Aisiyi Health Industry Co., Ltd, Xi'an, 710075, China
| | - Cheng Peng
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China.
| | - Xiaofeng Wei
- School of Pharmacy, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, 710061, China.
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Lu J, Xu J, Zhu S, Zhou Z, Zhang Z, Li J, Zhang W, Chen K. Study on mechanism of cellulose nanocrystals on hydrophobic phthalocyanine green in aqueous phase. Carbohydr Polym 2024; 324:121505. [PMID: 37985093 DOI: 10.1016/j.carbpol.2023.121505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/15/2023] [Accepted: 10/15/2023] [Indexed: 11/22/2023]
Abstract
Phthalocyanine green is a hydrophobic pigment with excellent properties, which is usually dispersed in the organic phase. However, most organic phases are volatile and harmful to the environment and organisms. Therefore, phthalocyanine green dispersed in the aqueous phase has development potential. In this work, cellulose nanocrystals (CNCs) were used as dispersant and stabilizer to disperse phthalocyanine green in the aqueous phase. Phthalocyanine green was added to CNCs colloid to prepare phthalocyanine green suspensions with good dispersibility and stability. The particle size, zeta potential, absorbance and microstructure of the phthalocyanine green suspensions were tested and analyzed. The results showed that CNCs had good dispersibility and stability to phthalocyanine green due to charge repulsion and steric hindrance. The phthalocyanine green suspensions were nano-sized and had well compatibility with different types of coating forming substances. The coatings of the mixture had good water resistance, adhesion and mechanical properties. The suspensions had the application property and could be mixed with coating forming substances to prepare coating materials. As a renewable and easily degraded biomass resource, CNCs are expected to become a new dispersant and stabilizer for pigment.
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Affiliation(s)
- Junliang Lu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Jun Xu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China; Qingyan Huayan New Material Technology Co., Ltd., Qingyuan 511500, China.
| | - Shiyun Zhu
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China.
| | - Ziyong Zhou
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Zhaohui Zhang
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Jun Li
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Wei Zhang
- Shandong Sun Paper Industry Joint Stock, Jining 272100, China
| | - Kefu Chen
- Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
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Zhang ZQ, Li JY, Ge ST, Ma TY, Li FY, Lu JL, Si SR, Cui ZZ, Jin YL, Jin XH. Bidirectional associations between sensorineural hearing loss and depression and anxiety: a meta-analysis. Front Public Health 2024; 11:1281689. [PMID: 38259802 PMCID: PMC10800407 DOI: 10.3389/fpubh.2023.1281689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/12/2023] [Indexed: 01/24/2024] Open
Abstract
Background Recently, the prevalence of sensorineural hearing loss (SNL) has been increasing, and several studies have suggested that depression, anxiety, and SNL may be associated with each other, however, individual findings still have discrepancies. To the best of our knowledge, no scholars have systematically elucidated the bidirectional associations between SNL, depression, and anxiety disorders from the perspective of meta-analysis. In this study, we aimed to systematically evaluate the bidirectional associations between SHL and depressive and anxiety symptoms, and to provide evidence-based medical evidence for reducing SNL, depression, and anxiety disorders. Methods We performed systematic review based on priori protocol that was registered with PROSPERO (No. CRD42022365963). Systematic search of PubMed, Embase, and Web of Science databases identified articles published as of June 1, 2023, on the relationship between SNL and depression and anxiety. Meta-analysis was performed to calculate the odds ratios (OR) and 95% confidence intervals (CIs) for the outcome metrics, and the results were combined to assess bivariate associations between the disorders with fixed or random effects. Sensitivity and subgroup analyzes were conducted to analyze sources of heterogeneity, and Egger's and Begg's tests combined with funnel plots were applied to assess publication bias. Results Summary analysis of the results of 20 studies covering 675,291 individuals showed that the bidirectional association between SNL and depression and anxiety disorders. The incidence (OR = 0.17, 95% CI: 0.09-0.28) and risk (OR = 1.43, 95% CI: 1.32-1.55) of depression and morbidity were higher in SNL patients than the general population. Elevated prevalence (OR = 0.46, 95% CI: 0.28-0.65) and risk (OR = 1.30, 95% CI: 1.11-1.48) of SNL were also observed in depressed patients. The prevalence of anxiety disorders among SNL patients was about 40% (OR = 0.40, 95% CI: 0.24%-0.57), which was associated with higher risk (OR = 1.83, 95% CI: 1.42-2.24) of development than the general population. Incidence of SNL in patients with anxiety disorders was approximately 31% (OR = 0.31, 95% CI: 0.29-0.33). Additionally, subgroup analyzes showed that the bidirectional associations between SNL, depression, and anxiety disorders was influenced by age, region, and mode of diagnosis of the disorders (SNL, depression, anxiety). Conclusion There are bidirectional associations between SNL and depression and anxiety disorders, which was influenced by age and region and the method the disorders (SNL, depression, anxiety) were diagnosed.
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Affiliation(s)
- Zhi-qiang Zhang
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Jing-yang Li
- Department of Clinical Medicine, First School of Clinical Medicine, Nanchang University, Nanchang, China
| | - Si-tong Ge
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Tian-yi Ma
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Fu-yao Li
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Jun-liang Lu
- Department of Psychiatry, Yanbian University Hospital, Yanji, China
| | - Shu-rui Si
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Zhe-zhu Cui
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
| | - Yu-lian Jin
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Xiang-hua Jin
- Department of Otolaryngology, Head and Neck Surgery, Affiliated Hospital of Yanbian University, Yanji, China
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Liu X, Yin X, Li D, Li K, Zhang H, Lu J, Zhou L, Gao J, Wang J, Wu H, Liang Z. RNA Sequencing Reveals Novel Oncogenic Fusions and Depicts Detailed Fusion Transcripts of FN1-FGFR1 in Phosphaturic Mesenchymal Tumors. Mod Pathol 2023; 36:100266. [PMID: 37391169 DOI: 10.1016/j.modpat.2023.100266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 07/02/2023]
Abstract
Phosphaturic mesenchymal tumors (PMTs) are rare neoplasms of soft tissue or bone. Although previous studies revealed that approximately 50% of PMTs harbor FN1::FGFR1 fusions, the molecular mechanisms in the remaining cases are largely unknown. In this study, fusion genes were investigated using RNA-based next-generation sequencing in 76 retrospectively collected PMTs. Novel fusions were validated with Sanger sequencing and fluorescence in situ hybridization. Fusion genes were detected in 52/76 (68.4%) PMTs, and 43/76 (56.6%) harbored FN1::FGFR1 fusions. Fusion transcripts and breakpoints of the FN1::FGFR1 fusions were diverse. The most common fusion transcript was between exon 20 of FN1 and exon 9 of FGFR1 (7/43, 16.3%). The most upstream breakpoint of the FN1 gene was located at the 3' end of exon 12, and the most downstream breakpoint of the FGFR1 gene was at the 5' end of exon 9, suggesting the inessential nature of the third fibronectin-type domain of FN1 and the necessity of the transmembrane domain of FGFR1 in the FN1::FGFR1 fusion protein, respectively. Moreover, the reciprocal FGFR1::FN1 fusions, which had not been identified in previous studies, were detected in 18.6% (8/43) of FN1::FGFR1 fusion-positive PMTs. Novel fusions were identified in 6/76 (7.9%) FN1::FGFR1 fusion-negative PMTs, including 2 involving FGFR: FGFR1::USP33 (1/76, 1.3%) and FGFR1::TLN1 (1/76, 1.3%). Other novel fusions identified were the PDGFRA::USP35 (1/76, 1.3%), SPTBN1::YWHAQ (1/76, 1.3%), GTF2I::RALGPS1 (1/76, 1.3%), and LTBP1::VWA8 (1/76, 1.3%) fusions. In addition to these novel fusions, FN1::FGFR2 (1/76, 1.3%), NIPBL::BEND2 (1/76, 1.3%), and KIAA1549::BRAF fusions (1/76, 1.3%) were also identified in FN1::FGFR1-negative cases arising from the thigh, ilium, and acetabulum, respectively. The frequency of oncogenic fusions was significantly higher (P = .012) in tumors derived from extremities (29/35, 82.9%) compared with other locations (23/41, 56.1%). No significant correlation was identified between fusions and recurrence (P = .786). In conclusion, we report fusion transcripts and breakpoints of FN1::FGFR1 in PMTs in detail, providing insights into fusion protein functions. We also revealed that a considerable proportion of PMTs without FN1::FGFR1 fusion carried novel fusions, providing further insight into the genetic basis of PMTs.
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Affiliation(s)
- Xiaoding Liu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xianglin Yin
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dongmei Li
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kaimi Li
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Zhang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junliang Lu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Liangrui Zhou
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Gao
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Wang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huanwen Wu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhiyong Liang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Chen L, Fu L, Sun J, Huang Z, Fang M, Zinkle A, Liu X, Lu J, Pan Z, Wang Y, Liang G, Li X, Chen G, Mohammadi M. Structural basis for FGF hormone signalling. Nature 2023:10.1038/s41586-023-06155-9. [PMID: 37286607 DOI: 10.1038/s41586-023-06155-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 05/02/2023] [Indexed: 06/09/2023]
Abstract
α/βKlotho coreceptors simultaneously engage fibroblast growth factor (FGF) hormones (FGF19, FGF21 and FGF23)1,2 and their cognate cell-surface FGF receptors (FGFR1-4) thereby stabilizing the endocrine FGF-FGFR complex3-6. However, these hormones still require heparan sulfate (HS) proteoglycan as an additional coreceptor to induce FGFR dimerization/activation and hence elicit their essential metabolic activities6. To reveal the molecular mechanism underpinning the coreceptor role of HS, we solved cryo-electron microscopy structures of three distinct 1:2:1:1 FGF23-FGFR-αKlotho-HS quaternary complexes featuring the 'c' splice isoforms of FGFR1 (FGFR1c), FGFR3 (FGFR3c) or FGFR4 as the receptor component. These structures, supported by cell-based receptor complementation and heterodimerization experiments, reveal that a single HS chain enables FGF23 and its primary FGFR within a 1:1:1 FGF23-FGFR-αKlotho ternary complex to jointly recruit a lone secondary FGFR molecule leading to asymmetric receptor dimerization and activation. However, αKlotho does not directly participate in recruiting the secondary receptor/dimerization. We also show that the asymmetric mode of receptor dimerization is applicable to paracrine FGFs that signal solely in an HS-dependent fashion. Our structural and biochemical data overturn the current symmetric FGFR dimerization paradigm and provide blueprints for rational discovery of modulators of FGF signalling2 as therapeutics for human metabolic diseases and cancer.
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Affiliation(s)
- Lingfeng Chen
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, China
| | - Lili Fu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
- State Key Laboratory for Macromolecule Drugs and Large-scale Preparation, Wenzhou Medical University, Wenzhou, China
| | - Jingchuan Sun
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Laboratory of Cell Fate Control, School of Life Sciences, Westlake University, Hangzhou, China
| | - Zhiqiang Huang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
| | - Mingzhen Fang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
| | - Allen Zinkle
- Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY, USA
| | - Xin Liu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
| | - Junliang Lu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
| | - Zixiang Pan
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China
| | - Yang Wang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- Center of Biomedical Physics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
| | - Guang Liang
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, China
| | - Xiaokun Li
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.
- State Key Laboratory for Macromolecule Drugs and Large-scale Preparation, Wenzhou Medical University, Wenzhou, China.
- National Engineering Research Center of Cell Growth Factor Drugs and Protein Biologics, Wenzhou Medical University, Wenzhou, China.
| | - Gaozhi Chen
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China.
- Institute of chronic kidney disease, Wenzhou Medical University, Wenzhou, China.
| | - Moosa Mohammadi
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.
- Institute of Cell Growth Factor, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, China.
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Liu Y, Lu T, Yuan M, Chen R, Lu J, Wang H, Wu Z, Wang Y. Genomic and transcriptomic insights into the precision treatment of pulmonary enteric adenocarcinoma. Lung Cancer 2023; 179:107169. [PMID: 37003209 DOI: 10.1016/j.lungcan.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/18/2023] [Accepted: 03/09/2023] [Indexed: 03/13/2023]
Abstract
BACKGROUND Pulmonary enteric adenocarcinoma (PEAC) is a rare subtype of lung adenocarcinoma. More investigations about precision therapy in PEAC were required to improve the prognosis. METHODS Twenty-four patients with PEAC were enrolled in this study. Tumor tissue samples were available from 17 patients for both DNA and RNA based next-generation sequencing, PD-L1 IHC staining and PCR-based microsatellite instability (MSI) analysis. RESULTS TP53 (70.6%) and KRAS (47.1%) were the most frequently mutated genes in PEAC. For KRAS mutations, the prevalence of G12D (37.5%) and G12V (37.5%) was higher than G12A (12.5%) and G12C (12.5%). Actionable mutations in receptor tyrosine kinase (including one EGFR and two ALK mutations), PI3K/mTOR, RAS/RAF/MEK, homologous recombination repair (HRR) and cell cycle signaling pathways were identified in 94.1% of patients with PEAC. While PD-L1 expression was observed in 17.6% (3/17) patients, no MSI-H patients were identified. Transcriptomic data showed that two patients with positive PD-L1 expression had relatively high immune infiltration. In addition, prolonged survival was obtained with the treatment of osimertinib, ensartinib, and immunotherapy combined with chemotherapy in two EGFR-mutated, one ALK-rearranged, and one PD-L1 expressed patients, respectively. CONCLUSION PEAC is a disease of genetic heterogeneity. The administration of EGFR and ALK inhibitors was effective in patients with PEAC. PD-L1 expression and KRAS mutation type may be used as predictive biomarkers for immunotherapy in PEAC. This study provided both theoretical basis and clinical evidence for PEAC.
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Chen C, Lu J, Wu H. Case Report: Submucosal gastroblastoma with a novel PTCH1::GLI2 gene fusion in a 58-year-old man. Front Oncol 2022; 12:935914. [PMID: 36147912 PMCID: PMC9487307 DOI: 10.3389/fonc.2022.935914] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/17/2022] [Indexed: 11/13/2022] Open
Abstract
Gastroblastoma is a rare biphasic tumor of the stomach that generally presents in young patients. MALAT1-GLI1 gene fusion was considered to be the characteristic molecular alteration of this tumor in previous reports. Herein, we described a 58-year-old man with a mass mainly located in the submucosa of the stomach. Microscopic examination showed a biphasic morphology with the same immunohistochemical phenotype as gastroblastoma. Interestingly, a novel PTCH1::GLI2 fusion rather than MALAT1-GLI1 fusion was detected in the tumor by RNA-based next generation sequencing (NGS). This was the first report that demonstrated a novel PTCH1::GLI2 gene fusion in gastroblastoma, and thus expanded the molecular spectrum of this tumor. The underlying pathogenesis merits further investigation.
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Affiliation(s)
- Cuimin Chen
- Department of Pathology, Shenzhen Hospital of Peking University, Shenzhen, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Peking, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Peking, China
- *Correspondence: Huanwen Wu,
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Bai Y, Lu J, Wu H, Wang J, Niu Y, Pang J, Wu S, Liu Y, Liang Z. A comparative clinicopathological and survival analysis of synchronous bilateral breast cancers. Histol Histopathol 2022; 37:791-802. [PMID: 35285011 DOI: 10.14670/hh-18-449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE The present study aimed to explore the clinicopathological characteristics, potential heterogeneity and prognostic factors in synchronous bilateral breast cancer (SBBC). METHODS We performed a retrospective review and paired comparison of the clinicopathological characteristics of 114 patients with SBBC in the Peking Union Medical College Hospital from January 2008 to September 2019. The prognostic significance of triple negativity status and coexistence ductal carcinoma in situ (DCIS) with bilateral invasive ductal carcinomas of no special type (IDC-NST) was analyzed in SBBC. RESULTS Most bilateral lesions on both sides were of IDC-NST, grade 2, luminal subtype, and stage I. Although most lesions were concordant between the left and right side, discordances were observed in histological type (25 cases, 21.9%), histological grade (31 cases, 27.2%), pTNM (61 cases, 53.5%), molecular subtypes (20 cases, 17.5%), and immunohistochemical staining of ER (18 cases, 15.8%), PR (26 cases, 22.8%), and HER2 (12 cases, 10.5%). Moreover, there was no significant difference in disease-free survival (DFS) and overall survival (OS) between IDC-NST with coexisting DCIS on both sides and IDC-NST with coexisting DCIS on one side or pure IDC-NST. SBBC with triple negativity on both sides exhibited a significantly shorter DFS and OS when compared with triple negativity on one side or non-triple negativity on both sides (p<0.001), and remained an independent prognostic factor by multivariate analysis. CONCLUSIONS A considerable proportion of discordance in clinicopathological characteristics is observed in SBBC, supporting the necessity of comprehensive pathological examination including immunohistochemical testing on both sides in clinical practice. Moreover, SBBC with triple negativity on both sides is a prognostic for poor survival.
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Affiliation(s)
- Yan Bai
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junliang Lu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huanwen Wu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Wang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yiru Niu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Pathology, China-Japan Friendship Hospital, Beijing, China
| | - Junyi Pang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shafei Wu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuanyuan Liu
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Disease, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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10
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Gao Y, Wang P, Lu J, Pan B, Guo D, Zhang Z, Wang A, Zhang M, Sun J, Wang W, Liang Z. Diagnostic significance of parafibromin expression in parathyroid carcinoma. Hum Pathol 2022; 127:28-38. [PMID: 35654240 DOI: 10.1016/j.humpath.2022.05.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/16/2022] [Accepted: 05/18/2022] [Indexed: 11/27/2022]
Abstract
Parathyroid carcinomas are difficult to distinguish from adenomas according to the current diagnostic criteria. The judgment of local infiltration is subjective and inconsistent. Existing studies have found that the CDC73 gene encoding parafibromin is related to the occurrence of parathyroid carcinomas. This study is aimed at investigating whether immunohistochemistry of parafibromin is helpful in distinguishing malignant from benign parathyroid tumours. A total of 53 patients with parathyroid carcinoma from Peking Union Medical College Hospital were included. Metastasis was found in 17/53 of patients. In addition, another 53 patients with parathyroid adenomas were included as controls. Appropriate sections were stained with an immunohistochemical autostainer. Three senior pathologists evaluated the sections and analysed their clinicopathological features independently. The loss of parafibromin expression only occurred in malignant tumours, including all carcinomas with metastasis (17/17) and 14/36 of carcinomas with only local infiltration. All staining results of adenomas (53/53) were positive. Considering invasion as the gold standard of malignancy, the sensitivity of parafibromin staining is 58%, and the specificity is 100%. If the gold standard is changed to metastasis, the sensitivity becomes 100%, and the specificity becomes 84%. By analysing clinicopathological features with metastasis and parafibromin staining, it is found that local-infiltrative carcinomas with positive staining results have better biological behaviours than carcinomas lack of parafibromin expression. Parafibromin staining is highly recommended as an auxiliary method in the diagnosis of parathyroid carcinoma.
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Affiliation(s)
- Yike Gao
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Pan Wang
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China; Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China
| | - Junliang Lu
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Boju Pan
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Dan Guo
- Clinical Biobank, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zixin Zhang
- Clinical Biobank, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Anqi Wang
- Clinical Biobank, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Miao Zhang
- Clinical Biobank, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jian Sun
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China.
| | - Wenze Wang
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China.
| | - Zhiyong Liang
- Department of Pathology, Molecular Pathology Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
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11
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Lu J, Cao B, Hu B, Liao Y, Qi R, Liu J, Zuo C, Xu S, Li Z, Chen C, Zhang M, Pan F. Heavy Fluorination via Ion Exchange Achieves High-Performance Li-Mn-O-F Layered Cathode for Li-Ion Batteries. Small 2022; 18:e2103499. [PMID: 34850552 DOI: 10.1002/smll.202103499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Lithium-excess manganese layered oxide Li2 MnO3 , attracts much attention as a cathode in Li-ion batteries, due to the low cost and the ultrahigh theoretical capacity (≈460 mA h g-1 ). However, it delivers a low reversible practical capacity (<200 mA h g-1 ) due to the irreversible oxygen redox at high potentials (>4.5 V). Herein, heavy fluorination (9.5%) is successfully implemented in the layered anionic framework of a Li-Mn-O-F (LMOF) cathode through a unique ion-exchange route. F substitution with O stabilizes the layered anionic framework, completely inhibits the O2 evolution during the first cycle, and greatly enhances the reversibility of oxygen redox, delivering an ultrahigh reversible capacity of 389 mA h g-1 , which is 85% of the theoretical capacity of Li2 MnO3 . Moreover, it also induces a thin spinel shell coherently forming on the particle surface, which greatly improves the surface structure stability, making LMOF exhibit a superior cycling stability (a capacity retention of 91.8% after 120 cycles at 50 mA g-1 ) and excellent rate capability. These findings stress the importance of stabilizing the anionic framework in developing high-performance low-cost cathodes for next-generation Li-ion batteries.
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Affiliation(s)
- Junliang Lu
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Bo Cao
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Bingwen Hu
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, China
| | - Yuxin Liao
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, China
| | - Rui Qi
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jiajie Liu
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Changjian Zuo
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Shenyang Xu
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Zhibo Li
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Cong Chen
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Mingjian Zhang
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Feng Pan
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
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12
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Wang J, Li R, Li J, Yi Y, Liu X, Chen J, Zhang H, Lu J, Li C, Wu H, Liang Z. Comprehensive analysis of oncogenic fusions in mismatch repair deficient colorectal carcinomas by sequential DNA and RNA next generation sequencing. J Transl Med 2021; 19:433. [PMID: 34657620 PMCID: PMC8522100 DOI: 10.1186/s12967-021-03108-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 10/06/2021] [Indexed: 11/26/2022] Open
Abstract
Background Colorectal carcinoma (CRC) harboring oncogenic fusions has been reported to be highly enriched in mismatch repair deficient (dMMR) tumors with MLH1 hypermethylation (MLH1me+) and wild-type BRAF and RAS. In this study, dMMR CRCs were screened for oncogene fusions using sequential DNA and RNA next generation sequencing (NGS). Results Comprehensive analysis of fusion variants, genetic profiles and clinicopathological features in fusion-positive dMMR CRCs was performed. Among 193 consecutive dMMR CRCs, 39 cases were identified as MLH1me+BRAF/RAS wild-type. Eighteen fusion-positive cases were detected by DNA NGS, all of which were MLH1me+ and BRAF/RAS wild-type. RNA NGS was sequentially conducted in the remaining 21 MLH1me+BRAF/RAS wild-type cases lacking oncogenic fusions by DNA NGS, and revealed four additional fusions, increasing the proportion of fusion-positive tumors from 46% (18/39) to 56% (22/39) in MLH1me+BRAF/RAS wild-type dMMR cases. All 22 fusions were found to involve RTK-RAS pathway. Most fusions affected targetable receptor tyrosine kinases, including NTRK1(9/22, 41%), NTRK3(5/22, 23%), ALK(3/22, 14%), RET(2/22, 9%) and MET(1/22, 5%), whilst only two fusions affected mitogen-activated protein kinase cascade components BRAF and MAPK1, respectively. RNF43 was identified as the most frequently mutated genes, followed by APC, TGFBR2, ATM, BRCA2 and FBXW7. The vast majority (19/22, 86%) displayed alterations in key WNT pathway components, whereas none harbored additional mutations in RTK-RAS pathway. In addition, fusion-positive tumors were typically diagnosed in elder patients and predominantly right-sided, and showed a significantly higher preponderance of hepatic flexure localization (P < 0.001) and poor differentiation (P = 0.019), compared to fusion-negative MLH1me+ CRCs. Conclusions We proved that sequential DNA and RNA NGS was highly effective for fusion detection in dMMR CRCs, and proposed an optimized practical fusion screening strategy. We further revealed that dMMR CRCs harboring oncogenic fusion was a genetically and clinicopathologically distinctive subgroup, and justified more precise molecular subtyping for personalized therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03108-6.
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Affiliation(s)
- Jing Wang
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Ruiyu Li
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Junjie Li
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yuting Yi
- Geneplus-Beijing Institute, Beijing, China
| | - Xiaoding Liu
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Jingci Chen
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Cami Li
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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13
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Wang X, Wang N, Xu B, Wang Y, Lang J, Lu J, Chen G, Zhang H. Comparative Study on Different Modified Preparation Methods of Cellulose Nanocrystalline. Polymers (Basel) 2021; 13:polym13193417. [PMID: 34641232 PMCID: PMC8512115 DOI: 10.3390/polym13193417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 11/21/2022] Open
Abstract
Different modification process routes are used to improve the modified cellulose nanocrystalline (MCNC) with higher fatty acid by esterification reaction and graft polymerization to obtain certain hydrophobic properties. Two preparation methods, product structure and surface activity, are compared and explored. Experimental results show that the modified product is still at the nanometer level and basically retains the crystal structure of the raw cellulose nanocrystalline (CNC). The energy consumption of the two preparation methods is low; however, the esterification method with co-reactant requires short reaction time, and the degree of substitution of the product is high. The modified product prepared by grafting polymerization method has a high HLB value and amphiphilicity, which can effectively reduce the surface tension of water. Therefore, it can be used as a green and environmentally friendly surface-active substance.
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Affiliation(s)
- Xinhui Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Na Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Baoming Xu
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Yili Wang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Jinyan Lang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
| | - Junliang Lu
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
- Guangdong Provincial Key Lab of Green Chemical Product Technology, Guangzhou 510640, China
| | - Guorong Chen
- Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen 361005, China;
| | - Heng Zhang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (N.W.); (B.X.); (Y.W.); (J.L.); (J.L.)
- Guangdong Provincial Key Lab of Green Chemical Product Technology, Guangzhou 510640, China
- Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen 361005, China;
- Correspondence: ; Tel.: +86-1595-480-3800
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Wang X, Chen H, Jiang R, Hong X, Peng J, Chen W, Jiang J, Li J, Huang D, Dai H, Wang W, Lu J, Zhao Y, Wu W. Interleukin-17 activates and synergizes with the notch signaling pathway in the progression of pancreatic ductal adenocarcinoma. Cancer Lett 2021; 508:1-12. [PMID: 33713738 DOI: 10.1016/j.canlet.2021.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 02/27/2021] [Accepted: 03/03/2021] [Indexed: 12/28/2022]
Abstract
Interleukin (IL)-17 is a prominent cytokine that promotes pancreatic intraepithelial neoplasia (PanIN) and pancreatic ductal adenocarcinoma (PDAC) and is associated with the oncogenic pathways in tumor progression. However, the mechanism and therapeutic value of the IL-17 axis remain unclear. In this study, we verified the activation of the IL-17 and Notch pathways in PanIN/PDAC via complementary approaches and validated their pro-tumor effects on tumor progression. Additionally, we found a positive correlation between IL-17 and Notch; the IL-17 axis can upregulate Notch activity via the canonical NF-κB pathway in vitro, thus synergistically promoting PanIN/PDAC. Furthermore, we observed that the co-inhibition of IL-17 and the Notch pathway can enhance the therapeutic effect by restricting tumor growth in vivo. Our study highlights the synergistic effect of the IL-17 axis and Notch pathway in promoting PanIN/PDAC and further suggests that IL-17-Notch co-inhibition is a novel therapeutic strategy with superior potential in treating PDAC.
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Affiliation(s)
- Xianze Wang
- Department of Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Hao Chen
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Rui Jiang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Xiafei Hong
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Junya Peng
- Department of Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Wenyan Chen
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jialin Jiang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Jie Li
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Dan Huang
- Department of Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Hongmei Dai
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Wenze Wang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Junliang Lu
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Yupei Zhao
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China.
| | - Wenming Wu
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China.
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15
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Lu J, Yu R, Liu R, Liang X, Sun J, Zhang H, Wu H, Zhang Z, Shao YW, Guo J, Liang Z. Genetic aberrations in Chinese pancreatic cancer patients and their association with anatomic location and disease outcomes. Cancer Med 2020; 10:933-943. [PMID: 33350171 PMCID: PMC7897942 DOI: 10.1002/cam4.3679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/19/2020] [Accepted: 11/22/2020] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES Pancreatic cancer (PC) is one of the most lethal malignancies with an increasing death rate over the years. We performed targeted sequencing and survival analyses on 90 Chinese pancreatic cancer patients, hoping to identify genomic biomarkers associated with clinical outcomes and therapeutic options. METHOD Genomic DNA was extracted from formalin-fixed paraffin-embedded (FFPE) tissue specimens of 90 pancreatic cancer patients and sequenced. The associations with clinicopathological factors were analyzed. RESULT High prevalence of driver mutations in KRAS, TP53, CDKN2A, SMAD4, and ARID1A genes were found. Most mutated genes in PC belonged to cell cycle and DNA damage repair pathways. Tumors that arise from the pancreas' body and tail (BT tumors) displayed a higher ratio of mutated KRAS and TP53 than those that arise from the pancreas' head and neck (HN tumors), who showed less diverse KRAS subtypes. Patients with a KRAS p.G12R mutated tumor tended to have a prolonged disease-free survival (DFS) and overall survival (OS) than other KRAS subtypes. Those with an altered ARID1A gene and more than two mutated driver genes tended to have a shorter DFS and OS. CONCLUSION HN and BT tumors of the pancreas displayed different mutational profiles, which had prognostic significances and indicated different potential therapeutic options.
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Affiliation(s)
- Junliang Lu
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ruoying Yu
- Translational Medicine Research Institute, Geneseeq Technology Inc, Toronto, ON, Canada
| | - Rui Liu
- Translational Medicine Research Institute, Geneseeq Technology Inc, Toronto, ON, Canada
| | - Xiaolong Liang
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jian Sun
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hui Zhang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhiwen Zhang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yang W Shao
- Nanjing Geneseeq Technology Inc, Nanjing, Canada.,School of Public Health, Nanjing Medical University, Nanjing, China
| | - Junchao Guo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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16
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You Y, Li L, Lu J, Wu H, Wang J, Gao J, Wu M, Liang Z. Germline and Somatic BRCA1/2 Mutations in 172 Chinese Women With Epithelial Ovarian Cancer. Front Oncol 2020; 10:295. [PMID: 32211327 PMCID: PMC7077344 DOI: 10.3389/fonc.2020.00295] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 02/20/2020] [Indexed: 12/17/2022] Open
Abstract
Objective: Despite several nationwide cohort studies of germline BRCA1/2 mutations and several small cohort studies of somatic BRCA1/2 mutations in Chinese epithelial ovarian cancer (EOC) patients, little is known about the impact of these findings on survival outcomes in this population. In this study of 172 retrospectively recruited Chinese EOC patients, germline and somatic BRCA1/2 mutations and their value for predicting survival outcomes were evaluated. Methods: Unselected patients who visited the study center from January 1, 2011, to January 1, 2015, were recruited and asked to provide peripheral blood samples for this study if they were pathologically confirmed to have primary EOC. All patients received staging surgeries or debulking surgeries involving systemic platinum-based chemotherapy, and the patients were then followed up to December 1, 2017. DNA was extracted from formalin-fixed, paraffin-embedded (FFPE) sections and peripheral blood and sequenced for somatic and germline testing, respectively. The demographic and clinicopathological characteristics of the patients were collected to analyze the distribution of BRCA mutations in subgroups. Survival outcomes were compared among various BRCA mutation statuses using univariate and multivariate models. Results: In 58 (33.7%) patients, 63 variants were identified, including variants of unknown significance (VUS) in 18 patients (10.5%) and pathogenic or likely pathogenic variants in a partially overlapping set of 41 patients (23.8%). Germline BRCA mutations, somatic BRCA mutations, BRCA1 mutations in general, and BRCA2 mutations in general were found in 35 (20.3%), 7 (4.1%), 28 (16.3%), and 13 (7.6%) patients, respectively. Five recurrent mutations were identified. Personal and family cancer histories as well as hereditary breast and ovarian cancer (HBOC) criteria were associated with deleterious BRCA mutations both overall and in the germline specifically, whereas only age at diagnosis of EOC was associated with somatic BRCA mutations. In univariate and Cox regression analyses, patients with BRCA1/2 mutations in general had significant improvements in progression-free survival (PFS) and overall survival (OS). Conclusions: In Chinese EOC patients, the distributions and risk factors associated with germline and somatic BRCA1/2 mutations were similar to those previously reported in international studies. Deleterious BRCA mutations in general were associated with improved survival outcomes in this cohort.
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Affiliation(s)
- Yan You
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Lei Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Junliang Lu
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Jing Wang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Jie Gao
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Ming Wu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Molecular Pathology Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
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Wang L, Wang L, Zhang H, Lu J, Zhang Z, Wu H, Liang Z. AREG mediates the epithelial‑mesenchymal transition in pancreatic cancer cells via the EGFR/ERK/NF‑κB signalling pathway. Oncol Rep 2020; 43:1558-1568. [PMID: 32323797 PMCID: PMC7107775 DOI: 10.3892/or.2020.7523] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
Amphiregulin (AREG) is a member of the epidermal growth factor (EGF) family and is expressed in a plethora of cancers. The biological roles of AREG in the regulation of the epithelial‑mesenchymal transition (EMT) in pancreatic cancer remain unclear. To investigate the expression of epidermal growth factor receptor (EGFR) and AREG in pancreatic cancer cell lines, RT‑qPCR, western blot analysis, and ELISA were performed. RNAi and exogenous AREG treatment were used to alter AREG expression. Wound‑healing and Transwell assays were performed to evaluate cell migration and invasion abilities. Western blot analysis and immunofluorescence staining were utilized to detect the expression of EMT markers. The protein expression of potential key factors involved in EMT, as well as those of the ERK, AKT, STAT3 and NF‑κB pathways, were analysed by western blotting. The role of AREG in tumour growth in vivo was further determined using an orthotopic model of pancreatic cancer. Knockdown of AREG inhibited AsPC‑1 cell migration and invasion. AREG knockdown upregulated E‑cadherin but downregulated vimentin, Snail and Slug expression in AsPC‑1 cells. In addition, AREG stimulation increased cell migration, invasion and EMT in PANC‑1 cells, and an NF‑κB inhibitor decreased AREG‑induced cell migration, invasion and EMT in PANC‑1 cells. AREG stimulation increased the nuclear accumulation of NF‑κB through the EGFR/ERK signalling pathway to induce EMT. Tumour growth and metastasis were decreased by AREG silencing in an orthotopic model of pancreatic cancer. AREG may play a critical role in cell migration, invasion, and EMT by activating the EGFR/ERK/NF‑κB signalling pathway in pancreatic cancer cells.
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Affiliation(s)
- Li Wang
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Lili Wang
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Zhiwen Zhang
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Research Center for Molecular Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
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18
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Xiao Y, Zhang H, Ma Q, Huang R, Lu J, Liang X, Liu X, Zhang Z, Yu L, Pang J, Zhou L, Liu T, Wu H, Liang Z. YAP1-mediated pancreatic stellate cell activation inhibits pancreatic cancer cell proliferation. Cancer Lett 2019; 462:51-60. [PMID: 31352078 DOI: 10.1016/j.canlet.2019.07.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 07/09/2019] [Accepted: 07/20/2019] [Indexed: 12/11/2022]
Abstract
Pancreatic stellate cells (PSCs) are activated in pancreatic ductal adenocarcinoma (PDAC) and are responsible for dense desmoplastic stroma. Yes-associated protein 1 (YAP1) can induce cancer-associated fibroblast activation in liver and breast tumors, but its effect on PSCs is unknown. In the present study, we determined that YAP1 was highly expressed in the nuclei of PDAC-derived activated PSCs. RNAi-mediated or pharmacological inhibition of YAP1 led to PSC deactivation. In addition, YAP1 stimulated the expression of secreted protein acidic and cysteine rich (SPARC) in PSCs, which was inhibited by RUNX1. SPARC secreted from PSCs inhibited pancreatic cancer cell (PCC) proliferation. High expression of nuclear YAP1 in tumor stroma was significantly correlated with SPARC expression and fibrosis degree in human PDAC tissues. Our study revealed a critical role for YAP1 in the regulation of PSC activation and paracrine signaling. Our findings provide insights into a novel rationale for targeting YAP1 to reprogram the PDAC microenvironment.
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Affiliation(s)
- Ying Xiao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Department of Pathology, Beijing Tsinghua Changgung Hospital, School of Clinic Medicine, Tsinghua University, Beijing, PR China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Qiang Ma
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Rui Huang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Xiaolong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Xuguang Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Zhiwen Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Lianyuan Yu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Junyi Pang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Liangrui Zhou
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China
| | - Tonghua Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China.
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China.
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China; Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, PR China.
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Zhang H, Yang H, Lu J, Lang J, Gao H. Study on Stability and Stability Mechanism of Styrene-Acrylic Emulsion Prepared Using Nanocellulose Modified with Long-Chain Fatty Acids. Polymers (Basel) 2019; 11:polym11071131. [PMID: 31277228 PMCID: PMC6681084 DOI: 10.3390/polym11071131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/24/2019] [Accepted: 06/28/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, nanocrystalline cellulose (NCC) was grafted with lauric acid, palmitic acid, and stearic acid and used as stabilizer to prepare styrene butyl acrylate emulsion. The properties of the emulsion were determined, and the mechanism of modified NCC (MNCC) stabilized emulsion was analyzed. Results showed that long-chain fatty acids were grafted to NCC through esterification initiated at a low temperature. When the dosage of L-MNCC, P-MNCC, and S-MNCC was 0.05%, the styrene-acrylic emulsion had 92.5%, 94.2%, and 96.3% conversion rates, respectively, and exhibited good dilution, pH, Ca2+, and centrifugal stability. The particle size of styrene-acrylic emulsion was approximately 460 nm, and the absolute value of the Zeta potential increased with the MNCC concentration. According to the images of optical microscopy and the transmission electron microscope, the MNCC was adsorbed onto the surface of styrene-acrylic emulsion droplets. The synergistic effect from the electrostatic repulsion of MNCC, the hydrophile lipophilicity of MNCC, and the spatial hindrance of the MNCC adsorption layer provided good stability for the styrene-acrylic emulsion. Therefore, MNCC could replace traditional surfactants in stabilizing emulsion.
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Affiliation(s)
- Heng Zhang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China.
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University, Hangzhou 310027, China.
| | - Hongyan Yang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China
| | - Junliang Lu
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China
| | - Jinyan Lang
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China
| | - Hongkun Gao
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China
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Wang J, Yi Y, Xiao Y, Dong L, Liang L, Teng L, Ying JM, Lu T, Liu Y, Guan Y, Pang J, Zhou L, Lu J, Zhang Z, Liu X, Liang X, Zeng X, Yi X, Zhou W, Xia X, Yang L, Zhang J, Kopetz S, Futreal PA, Wu H, Liang Z. Prevalence of recurrent oncogenic fusion in mismatch repair-deficient colorectal carcinoma with hypermethylated MLH1 and wild-type BRAF and KRAS. Mod Pathol 2019; 32:1053-1064. [PMID: 30723297 DOI: 10.1038/s41379-019-0212-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/31/2018] [Accepted: 12/31/2018] [Indexed: 01/04/2023]
Abstract
Oncogenic fusions are rare in colorectal carcinomas, but may be important for prognosis and therapy. An effective strategy for screening targetable oncogenic fusions in colorectal carcinomas is needed. Here, we investigate molecular genetic alterations in colorectal carcinomas based on their DNA mismatch repair status, and to effectively screen for targetable oncogenic fusions in colorectal carcinomas. In this retrospective study, the initial cohort included 125 consecutive mismatch repair-deficient and 238 randomly selected mismatch repair-proficient colorectal carcinomas diagnosed between July 2015 and December 2017 at Peking Union Medical College Hospital. Targeted sequencing was performed. MLH1 promoter hypermethylation analysis was further employed for subgrouping dMMR colorectal carcinomas. Clinicopathological characteristics, molecular features, and survival outcome of colorectal carcinomas harboring oncogenic fusions were assessed. A multicenter cohort comprised of 227 colorectal carcinomas with dual loss of MLH1/PMS2 was used to validate the efficacy of the proposed screening strategy for oncogenic fusions. Of the 363 patients in the initial cohort, 11(3.0%) harbored oncogenic fusions and were all mismatch repair-deficient colorectal carcinomas with hypermethylated MLH1 and wild-type BRAF and KRAS, comprising 55% (11/20) of this subgroup. These patients with oncogenic fusions showed poorer 3-year cancer-specific survival compared with other Stage III/IV mismatch repair-deficient colorectal carcinoma patients (40% vs. 97%), and significantly higher CD274(PD-L1) expression in tumor cells compared with other dMMR colorectal carcinoma patients (46% vs. 6.1%, P < 0.001). An easy-to-perform and cost-efficient strategy for screening targetable fusions was proposed based on the current molecular testing algorithms for colorectal carcinomas, and validated in an independent multicenter cohort. In conclusion, oncogenic fusions were highly enriched and frequently detected in mismatch repair-deficient colorectal carcinomas with MLH1 hypermethylation and wild-type BRAF and KRAS, and were associated with poor prognosis and high tumor CD274(PD-L1) expression.
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Affiliation(s)
- Jing Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuting Yi
- Geneplus-Beijing Institute, Beijing, China
| | - Yi Xiao
- Department of Surgery, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lin Dong
- Departments of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li Liang
- Department of Pathology, Nanfang Hospital, Guangzhou, Guangdong, China
| | - Lianghong Teng
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jian Ming Ying
- Departments of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tao Lu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuanyuan Liu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | | - Junyi Pang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lianrui Zhou
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junliang Lu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiwen Zhang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoding Liu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaolong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuan Zeng
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xin Yi
- Geneplus-Beijing Institute, Beijing, China
| | - Weixun Zhou
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuefeng Xia
- Houston Methodist Research Institute, Houston, TX, USA
| | - Ling Yang
- Geneplus-Beijing Institute, Beijing, China
| | - Jianjun Zhang
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.,Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - P Andrew Futreal
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Huanwen Wu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhiyong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Abstract
e15752 Background: Carcinomas in the pancreatic head/neck and body/tail represent different clinicopathological characteristics, but little is known about the underlying genetic mechanisms. The present study aims to explore the differences in mutation profile between pancreatic head and body/tail cancers. Methods: Fifty-four patients were retrospectively enrolled in the present study. DNA was purified from qualified formalin-fixed, paraffin-embedded tissue blocks of the tumor and corresponding adjacent normal tissue and subjected to target-capture next generation sequencing (TGS). Somatic mutations were identified, which further underwent gene ontology (GO) and KEGG pathway analysis. Results: The most frequently mutated genes in carcinomas of the pancreatic head were KRAS (61.3%), TP53(38.7%), and CDKN2A (16.1%), while that of the pancreatic body/tail were KRAS (95.7%), TP53(87%), CDKN2A (26.1%), and ARID1A (26.1%). The prevalence of TP53 and KRAS mutations in pancreatic head and body/tail cancers were significantly different from each other (p = 0.0006 and p = 0.0037, respectively). Pancreatic head/neck cancers also preserved a broader KRAS mutation spectrum than their counterparts of the body/tail. Pathway analyses revealed that mutations in cancer of pancreatic head/neck were enriched for genes involved in the protein amino acid phosphorylation, regulation of cell proliferation, transmembrane receptor protein tyrosine kinase signaling pathway, and phosphorylation pathways, while cancers of the pancreatic body/tail were enriched for genes involved in colorectal cancers. Conclusions: Cancer of the pancreatic head/neck and body/tail have distinct mutation profiles.
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Affiliation(s)
- Junliang Lu
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiyong Liang
- Peking Union Medical College Hospital, Beijing, China
| | - Huanwen M. Wu
- Peking Union Medical College Hospital, Beijing, Dongchen Distric, China
| | - Junyi Pang
- Department of pathology, Peking Union Medical College Hospital, Beijing, China
| | - Xiaolong Liang
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junchao Guo
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yang Shao
- Nanjing Geneseeq Technology Inc., Nanjing, China
| | - Xiaohan Zuo
- Nanjing Geneseeq Technology Inc., Nanjing, China
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Ni JY, Wang PS, Lu JL, Xiang HJ. Realizing Magnetoelectric Coupling with Hydrogen Intercalation. Phys Rev Lett 2019; 122:117601. [PMID: 30951348 DOI: 10.1103/physrevlett.122.117601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 12/25/2018] [Indexed: 06/09/2023]
Abstract
Materials with a coexistence of magnetic and ferroelectric order (i.e., multiferroics) provide an efficient route for the control of magnetism by electric fields. Unfortunately, a long-sought room temperature multiferroic with strongly coupled ferroelectric and ferromagnetic (or ferrimagnetic) orderings is still lacking. Here, we propose that hydrogen intercalation in antiferromagnetic transition-metal oxides is a promising way to realize multiferroics with strong magnetoelectric coupling. Taking brownmillerite SrCoO_{2.5} as an example, we show that hydrogen intercalated SrCoO_{2.5} displays strong ferrimagnetism and large electric polarization in which the hydroxide acts as a new knob to simultaneously control the magnetization and polarization at room temperature. We expect that ion intercalation will become a general way to design magnetoelectric and spintronic functional materials.
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Affiliation(s)
- J Y Ni
- Key Laboratory of Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, People's Republic of China and Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People's Republic of China
| | - P S Wang
- Key Laboratory of Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, People's Republic of China and Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People's Republic of China
| | - J L Lu
- Key Laboratory of Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, People's Republic of China and Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People's Republic of China
| | - H J Xiang
- Key Laboratory of Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, People's Republic of China and Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People's Republic of China
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Zhang J, Sun J, Zhang Z, Wang A, Liang X, Lu J, Liang Z. Driver mutation profiles and clinicopathological correlation in pulmonary adenocarcinoma with a micropapillary component. Hum Pathol 2019; 85:242-250. [DOI: 10.1016/j.humpath.2018.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 11/07/2018] [Accepted: 11/12/2018] [Indexed: 01/08/2023]
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Zhang HJ, Dou RC, Lin L, Wang QY, Huang BE, Zhao XL, Chen DJ, Ding YL, Ding HJ, Cui SH, Zhang WS, Xin H, Gu WR, Hu YL, Ding GF, Qi HB, Fan L, Ma YY, Lu JL, Yang Y, Lin L, Luo XC, Zhang XH, Fan SR, Yang HX. [Risk factors and sonographic findings associated with the type of placenta accreta spectrum disorders]. Zhonghua Fu Chan Ke Za Zhi 2019; 54:27-32. [PMID: 30695903 DOI: 10.3760/cma.j.issn.0529-5675.2019.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the risk factors and sonographic findings of pregnancies complicated by placenta increta or placenta percreta. Methods: Totally, 2 219 cases were retrospectively analyzed from 20 tertiary hospitals in China from January 2011 to December 2015. The data were collected based on the original case records. All cases were divided into two groups, the placenta increta (PI) group (79.1%, 1 755/2 219) and the placenta percreta (PP) group (20.9%, 464/2 219) , according to the degree of placental implantation. The risk factors and sonographic findings of placenta increta or percreta were analyzed by uni-factor and logistic regression statistic methods. Results: The risk factors associated with the degree of placental implantation were age, gravida, previous abortion or miscarriage, previous cesarean sections, and placenta previa (all P<0.05), especially, previous cesarean sections (χ(2)=157.961) and placenta previa (χ(2)=91.759). Sonographic findings could be used to predict the degree of placental invasion especially the boundaries between placenta and uterine serosa, the boundary between placenta and myometrium, the disruption of the placental-uterine wall interface and loss of the normal retroplacental hypoechoic zone(all P<0.01). Conclusions: Previous cesarean sections and placenta previa are the main independent risk factors associated with the degree of placenta implantation. Ultrasound could be used to make a prenatal suggestive diagnosis of placenta accreta spectrum disorders.
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Affiliation(s)
- H J Zhang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - R C Dou
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - L Lin
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - Q Y Wang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - B E Huang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
| | - X L Zhao
- Department of Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - D J Chen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China
| | - Y L Ding
- Department of Obstetrics and Gynecology, The Second Xiangya Hospital of Central South University, Changsha 410008, China
| | - H J Ding
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Hospital, the Affiliated Obstetrics and Gynecology Hospital of Nanjing Medical University, Nanjing 210004, China
| | - S H Cui
- Department of Obstetrics, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W S Zhang
- Department of Obstetrics and Gynecology, Xiangya Hospital of Central South University, Changsha 410008, China
| | - H Xin
- Department of Obstetrics, The Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - W R Gu
- Department of Obstetrics, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y L Hu
- Department of Obstetrics and Gynecology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210093, China
| | - G F Ding
- Department of Obstetrics, Urumqi Maternity and Child Health Hospital, Urumqi 830001, China
| | - H B Qi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - L Fan
- Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital of Capital Medical University, Beijing 100026, China
| | - Y Y Ma
- Department of Obstetrics and Gynecology, Qilu Hospital of Shangdong University, Ji'nan 266035, China
| | - J L Lu
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital of Capital Medical University, Beijing 100043, China
| | - Y Yang
- Department of Obstetrics and Gynecology, Civil Aviation General Hospital of Peking University, Beijing 100025, China
| | - L Lin
- Department of Obstetrics and Gynecology, Beijing Friendship Hospital of Capital Medical University, Beijing 100050, China
| | - X C Luo
- Department of Obstetrics, Lianyungang Maternity and Child Health Hospital, Lianyungang 100142, China
| | - X H Zhang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - S R Fan
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen 518035, China
| | - H X Yang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
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Liu X, Wu H, Teng L, Zhang H, Lu J, Liang Z. High-grade encapsulated papillary carcinoma of the breast is clinicopathologically distinct from low/intermediate-grade neoplasms in Chinese patients. Histol Histopathol 2018; 34:137-147. [PMID: 30004109 DOI: 10.14670/hh-18-026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Encapsulated papillary carcinoma (EPC) of the breast is typically of low-to-intermediate grade (LTIG) with favorable prognosis. Rarely, high-grade (HG) EPC cases have been documented in recent years. Herein we compared the morphological, immunohistochemical, and clinical features of LTIG EPC to those of HG EPC. Of the 30 EPC patients, 25 were diagnosed as LTIG and five as HG (median age: 60 and 36 years, respectively); 80% of the HG EPCs exhibited predominantly solid architecture with prominent lymphoplasmacytic infiltrates, more crowded and thicker papillae, and greater stratification and irregular arrangement of malignant epithelial cells. Coexisting invasive components were observed in 32% and 80% of LTIG and HG cases, respectively. HG EPC was negative for hormone receptor staining. Additionally, 48% of LTIG EPC cases were moderately positive for human epidermal growth factor receptor 2 (Her-2) immunostaining (2+); among them, one case showed Her-2 gene amplification by fluorescence in situ hybridization. The basal-like markers cytokeratin 5/6 and epidermal growth factor receptor were detected in two and five HG cases, respectively. HG EPC was also characterized by a significantly high Ki-67 index (median: 85%, P<0.001). No local recurrence or distant metastasis was noted during the follow-up. HG EPC typically exhibited a solid architecture with a concurrent invasive component as well as a triple-negative and basal-like immunophenotype in young women. HG EPC might be indicative of high proliferative activity and potential aggressiveness.
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Affiliation(s)
- Xuguang Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lianghong Teng
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Ren X, Wu H, Lu J, Zhang Y, Luo Y, Xu Q, Shen S, Liang Z. PD1 protein expression in tumor infiltrated lymphocytes rather than PDL1 in tumor cells predicts survival in triple-negative breast cancer. Cancer Biol Ther 2018; 19:373-380. [PMID: 29336717 DOI: 10.1080/15384047.2018.1423919] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
To determine PD1/PDL1 expression status in triple-negative breast cancer (TNBC) at both protein and mRNA levels, and to analyze the relationship between their expression and clinical parameters of the TNBC patients. Immunohistochemistry and RNAscope were used to semi quantitively evaluate PD1/PDL1 protein and mRNA expression in 195 TNBC cases on tissue microarrays. Tumor infiltrating lymphocyte (TILs) abundance was assessed using hematoxylin-eosin staining. Both tumor cells and TILs expressed PDL1. PDL1 protein and mRNA positivity was 6.7% and 74.4% respectively in tumor cells, and 31.3% and 50.9% respectively in TILs. PDL1 protein and mRNA expressions had no significant association with patient prognosis. PD1 protein was only detected in TILs (70.3% positivity). PD1 protein expression was significantly related to PDL1 expression, higher TIL abundance, Ki-67 index, basal-like subtypes, and distant metastasis. Furthermore, it was significantly associated with longer disease free survival (P<0.001) and overall survival (P = 0.004). There was no significant association between PD1 mRNA expression and clinicopathological characteristics. PD1/PDL1 protein and mRNA expressions were inconsistent (kappa = 0.705 and 0.061, respectively). PD1 protein expression in TILs, but not PDL1 in tumor cells, was a favorable prognostic factor in TNBC. PD1/PDL1 mRNA and protein expressions were inconsistent.
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Affiliation(s)
- Xinyu Ren
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Huanwen Wu
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Junliang Lu
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Yuhan Zhang
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Yufeng Luo
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Qianqian Xu
- b Department of Breast Surgery , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Songjie Shen
- b Department of Breast Surgery , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
| | - Zhiyong Liang
- a Department of Pathology , Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing , China
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Liang X, Sun J, Wu H, Luo Y, Wang L, Lu J, Zhang Z, Guo J, Liang Z, Liu T. PD-L1 in pancreatic ductal adenocarcinoma: a retrospective analysis of 373 Chinese patients using an in vitro diagnostic assay. Diagn Pathol 2018; 13:5. [PMID: 29378617 PMCID: PMC6389094 DOI: 10.1186/s13000-017-0678-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 12/12/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Programmed death ligand 1 (PD-L1) has shown potential as a therapeutic target in numerous solid tumors. Its prognostic significance has also been established in pancreatic ductal adenocarcinoma (PDAC). The present study aimed to explore PD-L1 expression in PDAC cases in a large Chinese cohort using an in vitro diagnostic (IVD) assay to provide further insight into the potential value of programmed cell death protein 1 (PD-1) as a therapeutic target. METHODS Three hundred seventy-three PDAC patients were retrospectively recruited in this study. Tissue microarray (TMA) blocks were made from available formalin-fixed and paraffin-embedded (FFPE) tumor and matched adjacent tissue specimens. We evaluated PD-L1 protein expression via immunohistochemistry (IHC) using a U.S. Food and Drug Administration (FDA)-approved IVD assay. The relationships between PD-L1 positivity and both clinicopathological characteristics and patient prognosis were analyzed. PD-1 expression and clinicopathological significance were also evaluated. RESULTS PD-L1 and PD-1 positivity were observed in 3.2% and 7.5% of cases, respectively. PD-L1 showed a predominantly membranous pattern in tumor cells, while no positive PD-L1 staining was observed in normal regions. Statistical analyses revealed that PD-L1 expression was associated with lymph node metastasis. PD-L1 positivity was a prognostic indicator of progression-free survival (PFS) and overall survival (OS) in univariate analyses, but only PFS remained statistically significant in multivariate analysis. PD-1 expression was detected in lymphocytes and was not associated with any clinicopathological feature except a history of pancreatitis. CONCLUSIONS The PD-L1 positivity rate is low in PDAC when evaluated using a companion diagnostic assay. It remains an independent prognostic factor for poor PFS.
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Affiliation(s)
- Xiaolong Liang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Jian Sun
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Yufeng Luo
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Lili Wang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Zhiwen Zhang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Junchao Guo
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
| | - Tonghua Liu
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuai Fu Yuan, Wangfujing, Beijing, 100730 People’s Republic of China
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Wang L, Lu J, Wu H, Wang L, Liang X, Liang Z, Liu T. Expression of signaling adaptor proteins predicts poor prognosis in pancreatic ductal adenocarcinoma. Diagn Pathol 2017; 12:42. [PMID: 28558797 PMCID: PMC5450263 DOI: 10.1186/s13000-017-0633-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 05/12/2017] [Indexed: 11/17/2022] Open
Abstract
Background Adaptor proteins bridge the gap between cell surface receptors and their downstream signaling elements. The clinicopathological and prognostic values of adaptor proteins remain poorly understood. The purpose of the present study was to explore the expression and prognostic value of three adaptor proteins: GRB2-associated binding protein 2 (GAB2), CRK-like protein (CRKL) and fibroblast growth factor receptor substrate 2 (FRS2) in pancreatic ductal adenocarcinoma (PDAC). Methods The expression of GAB2, CRKL, and FRS2 in 77 formalin fixed paraffin embedded (FFPE) samples from 77 PDAC patients, along with three paired fresh PDAC and matched normal tissues from 3 PDAC patients was analyzed by immunohistochemistry and western blot, respectively. The association between the expression of the three proteins and the clinicopathological factors of PDAC was assessed by χ2 test. The correlation between the expression levels of the three proteins was analyzed by Spearman rank correlation analyses; Kaplan-Meier survival analyses were also performed. Results IHC was successful in 75, 76, and 77 cases for GAB2, CRKL, and FRS2, respectively. Of which, the positive rate of GAB2, CRKL, and FRS2 protein expression was 40.00% (30/75), 53.95% (41/76) and 35.06% (27/77), respectively. The positive rate of GAB2, CRKL and FRS2 co-expression was 16.88% (13/77). Though there was no association between GAB2 expression, CRKL expression, FRS2 expression, GAB2/CRKL/FRS2 co-expression and the clinicopathological parameters of PDAC, positive correlations were observed between the expressions of the three proteins. Further, univariate survival analysis showed that positive expression of GAB2, CRKL and FRS2 and co-expression of GAB2/CRKL/FRS2 of PDAC predicted poor clinical outcomes, and multivariate survival analysis suggested that positive expression of GAB2 and positive co-expression of GAB2/CRKL/FRS2 were independent prognostic factors for disease-free survival (DFS) and overall survival (OS), respectively. Conclusion In conclusion, GAB2, CRKL, and FRS2 may be potential prognosticators and therapeutic targets for PDAC patients.
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Affiliation(s)
- Lili Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Junliang Lu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Huanwen Wu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Li Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xiaolong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Zhiyong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
| | - Tonghua Liu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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Zhang AL, Yang J, Wang H, Lu JL, Tang S, Zhang XJ. Association of NUDT15 c.415C>T allele and thiopurine-induced leukocytopenia in Asians: a systematic review and meta-analysis. Ir J Med Sci 2017; 187:145-153. [PMID: 28470355 DOI: 10.1007/s11845-017-1608-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/25/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Thiopurines, commonly used to treat autoimmune conditions and cancer, can be limited by life-threatening leucopenia. However, whether NUDT15 (nucleoside diphosphate-linked moiety X-type motif 15) is associated with thiopurine-induced leucopenia in Asians is controversial. METHODS Relevant studies in English that were published until July 10, 2016 were identified through PubMed, EMbase, and other web knowledge databases. Study quality was assessed according to the Newcastle-Ottawa Scale (NOS) criteria. Summary risk ratio (RR) and 95% confidence intervals (CI) were estimated based on a fixed-effects model or a random-effects model, depending on the absence or presence of significant heterogeneity. RESULTS Seven studies of 1138 patients met our inclusion criteria. Random-effects model meta-analysis provided evidence that T carriers of NUDT15 c.415C>T were significantly correlated with high incidences of thiopurine-induced leukocytopenia [CT + TT vs. CC: RR = 3.79, 95%CI (2.64 ~ 5.44), P < 0.00001]. This correlation was especially strong in TT patients, where it was found to be significantly increased by 6.54-fold compared with CC patients [TT vs. CC: RR = 6.54, 95%CI (3.34 ~ 12.82), P < 0.00001]. We also found that the NUDT15 c.415C>T variant was common in Asians and Hispanics, but rare in Europeans and Africans; the frequency of the NUDT15 c.415C>T distribution varied substantially by race/ethnicity. CONCLUSION The results of this meta-analysis confirm that NUDT15 c.415C>T may be an important predictor of thiopurine-induced leukocytopenia in Asians. Genotype targeting of NUDT15 c.415C>T before initiating thiopurine treatment may be useful to limit leukocytopenia.
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Affiliation(s)
- A L Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China
| | - J Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China
| | - H Wang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China
| | - J L Lu
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China
| | - S Tang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China
| | - X J Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, NO.1 Jianshe Road, Erqi District, 450052, Zhengzhou, People's Republic of China.
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Wang L, Wu H, Wang L, Zhang H, Lu J, Liang Z, Liu T. Asporin promotes pancreatic cancer cell invasion and migration by regulating the epithelial-to-mesenchymal transition (EMT) through both autocrine and paracrine mechanisms. Cancer Lett 2017; 398:24-36. [PMID: 28400334 DOI: 10.1016/j.canlet.2017.04.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 03/13/2017] [Accepted: 04/01/2017] [Indexed: 12/12/2022]
Abstract
Pancreatic cancer is histopathologically characterized by excessive desmoplasia induced by pancreatic stellate cells (PSCs). Asporin, an extracellular matrix (ECM) protein, is highly expressed in cancer-associated fibroblasts (CAFs). Asporin expression in PSCs and its roles in PSC-pancreatic cancer cell (PCC) interaction remain unclear. The present study firstly showed that Asporin is highly expressed in activated PSCs and is involved in PSC-mediated invasion and migration of PCCs. Exogenous Asporin interacted with the transmembrane receptor CD44 on PCCs to activate NF-κB/p65 and promoted the epithelial-mesenchymal transition (EMT) in PCCs. Furthermore, AKT and ERK pathways participated in Asporin/CD44-induced NF-κB/p65 activation in pancreatic cancer. Asporin had similar effects on PCCs via an autocrine mechanism. Consistent with our in vitro experiments, we showed that Asporin in peritumoral stroma of pancreatic cancer tissues was associated with poor clinical outcome. In conclusion, this is the first study to show that Asporin promotes EMT, invasion, and migration of PCCs by activating CD44-AKT/ERK-NF-κB pathway in paracrine and autocrine manners. Moreover, our results indicate that Asporin may be a prognostic marker and suggest that targeting the tumor microenvironment represents a promising therapeutic strategy in pancreatic cancer.
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Affiliation(s)
- Lili Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Huanwen Wu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Li Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Hui Zhang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Junliang Lu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Zhiyong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
| | - Tonghua Liu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
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Teng L, Deng W, Lu J, Zhang J, Ren X, Duan H, Chuai S, Duan F, Gao W, Lu T, Wu H, Liang Z. Hobnail variant of papillary thyroid carcinoma: molecular profiling and comparison to classical papillary thyroid carcinoma, poorly differentiated thyroid carcinoma and anaplastic thyroid carcinoma. Oncotarget 2017; 8:22023-22033. [PMID: 28423545 PMCID: PMC5400643 DOI: 10.18632/oncotarget.15786] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 01/24/2017] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND As a rare but aggressive papillary thyroid carcinoma (PTC) variant, the genetic changes of hobnail variant of PTC (HVPTC) are still unclear. RESULTS The prevalence of HVPTC was 1.69% (18/1062) of all PTC diagnosed in our cohort. 73 samples from 55 patients (17 HVPTC, 26 CPTC, 7 PDTC and 5 ATC) were successfully analyzed using targeted NGS with an 18-gene panel. Thirty-seven mutation variant types were identified among 11 genes. BRAF V600E mutation was the most common mutation, which is present in almost all HVPTC samples (16/17, 94%), most CPTC samples (20/26, 77%), and none of the ATC and PDTC samples. TERT promoter mutation (C228T) was identified in 2 ATC and one HVPTC patient. RAS and TP53 mutation are almost exclusively present among ATC and PDTC samples although TP53 mutation was also observed in 3 HVPTC patients. Six different GNAS mutations were identified among 8 CPTC patients (31%) and none of the HVPTC patients. The only patient who died of disease progression harbored concomitant TERT C228T mutation, BRAF V600E mutation and TP53 mutation. METHODS HVPTC cases were identified from a group of 1062 consecutive surgical specimens diagnosed as PTC between 2000 and 2010. Targeted next-generation sequencing (NGS) was applied to investigate the mutation spectrum of HVPTC, compared to classical PTC (CPTC), poorly differentiated thyroid carcinoma (PDTC) and anaplastic thyroid carcinoma (ATC). CONCLUSION As an aggressive variant of PTC, HVPTC has relatively specific molecular features, which is somewhat different from both CPTC and ATC/PDTC and may underlie its relatively aggressive behavior.
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Affiliation(s)
- Lianghong Teng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China.,Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | | | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Jing Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Xinyu Ren
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Huanli Duan
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | | | - Feidie Duan
- Burning Rock Biotech Co. Ltd., Guangzhou, China
| | - Wei Gao
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Tao Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
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Li M, Qu SH, Qin YD, Lu JL, Lan GP, Qin Y, Yang Y, Si YF. [Application of cut needle biopsy in the diagnosis of submucosal type of nasopharyngeal neoplasms]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:887-890. [PMID: 27978876 DOI: 10.3760/cma.j.issn.1673-0860.2016.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy of cut needle biopsy in the diagnosis of submucosal nasopharyngeal neoplasms. Methods: Cut needle biopsy performed with automatic biopsy gun was applied in 17 cases with submucosal type of nasopharyngeal neoplasms.The bleeding quantity was recorded and the pain was measured by score. Results: Adequate biopsy sample for hispathological diagnosis was received from each of the 17 patients. And the hispathological diagnosis were consistent with the follow-up visit. The bleeding quantity ranged from 1 to 5 ml ((1.9±0.3)ml). The scores of numerical rating scale were between 2-7 (4.0±0.4). There were no serious complications such as hemorrhea. There were 3 patients of inflammation in pathological diagnosis. And These 3 patients had no tumor during the follow-up( from 6 to 33 months). There were 12 patients of undifferentiated cancer. Among the 12 patients, there were five newly diagnosed patients and seven recurrent patients. There were 2 patients of lymphoma. Conclusion: Cut needle biopsy has the advantages of minimal trauma, shorter operative time, less bleeding, light pain, and no serious complications. It is simple, safe, and worth of application clinically.
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Affiliation(s)
- M Li
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - S H Qu
- Department of Otorhinolaryngology of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - Y D Qin
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - J L Lu
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - G P Lan
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - Y Qin
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - Y Yang
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
| | - Y F Si
- Department of Otorhinolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China
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Wang L, Wu H, Wang L, Lu J, Duan H, Liu X, Liang Z. Expression of amphiregulin predicts poor outcome in patients with pancreatic ductal adenocarcinoma. Diagn Pathol 2016; 11:60. [PMID: 27391842 PMCID: PMC4938900 DOI: 10.1186/s13000-016-0512-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 07/02/2016] [Indexed: 11/24/2022] Open
Abstract
Background The validation of novel diagnostic, prognostic and predictive biomarkers in cancer is crucial for optimizing the choice and efficacy of personalized therapies. The aim of this study was to determine the epidermal growth factor receptor (EGFR), epidermal growth factor receptor variant III (EGFRvIII) and amphiregulin (AREG) protein expression levels and to evaluate the prognostic significance of EGFR, EGFRvIII and AREG in pancreatic ductal adenocarcinoma (PDAC). Methods The EGFR, EGFRvIII and AREG protein levels in PDAC (n = 92) were examined by using immunohistochemistry. The associations between EGFRvIII expression, AREG expression, AREG/EGFR co-expression and clinicopathological factors were assessed, the correlation between AREG and EGFR expression was analyzed and the survival analyses were performed. Results Among the lesions of PDAC, 12 (13 %) stained positive for EGFRvIII, 49 (53.3 %) stained positive for AREG and 22(23.9 %) stained double positive for AREG/EGFR. The relationships between each protein expression level and the clinicopathologic factors were examined, only AREG/EGFR co-expression was significantly related to tumor differentiation (P = 0.032). The correlation between AREG and EGFR expression was statistically insignificant (P = 0.709). Univariate survival analysis proved that high tumor-node-metastasis (TNM) stage, poor tumor differentiation and AREG expression were significant poor prognostic factors for disease-free survival (DFS) and overall survival (OS). By multivariate survival analysis, tumor differentiation was an independent poor prognostic factor for DFS (HR = 1.785, P < 0.05), whereas high TNM stage (HR = 2.25, P < 0.05), poor tumor differentiation (HR = 2.125, P < 0.01), positive resection margins (HR = 1.84, P < 0.05), and AREG expression (HR = 1.822, P < 0.05) were all independent poor prognostic factors for OS. Conclusions In conclusion, our data indicate that AREG expression is an important prognostic biomarker in PDAC . Electronic supplementary material The online version of this article (doi:10.1186/s13000-016-0512-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Li Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Huanwen Wu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Lili Wang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Junliang Lu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Huanli Duan
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Xuguang Liu
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Zhiyong Liang
- Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China.
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Sun J, Zhang J, Lu J, Gao J, Ren X, Teng L, Duan H, Lin Y, Li X, Zhang B, Liang Z. BRAF V600E and TERT Promoter Mutations in Papillary Thyroid Carcinoma in Chinese Patients. PLoS One 2016; 11:e0153319. [PMID: 27064992 PMCID: PMC4827831 DOI: 10.1371/journal.pone.0153319] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 03/28/2016] [Indexed: 11/20/2022] Open
Abstract
Background The BRAF V600E and telomerase reverse transcriptase (TERT) promoter mutations have been reported in papillary thyroid carcinoma (PTC). The aim of this retrospective cross-sectional study was to add further information regarding the prevalence of the BRAF V600E and TERT promoter mutations in Chinese PTC and their clinicopathological associations. Methods We detected the BRAF V600E mutation and TERT promoter mutations in 455 Chinese PTC patients and analyzed the association of these mutations with several clinicopathological features. Results The BRAF V600E mutation was detected in 343 (75.4%) of 455 cases and was significantly associated with older age (p<0.001) and conventional subtype (p = 0.003). TERT promoter mutations were detected in 19 (4.4%) of 434 PTCs and were associated with older age (p<0.001), larger tumor size (p = 0.024), and advanced TNM stage(p<0.001). Of the 19 patients that were positive for TERT promoter mutations, 18 (94.7%) also harbored the BRAF V600E mutation. Conclusion We determined the prevalence and clinicopathological associations of BRAF V600E and TERT promoter mutations in Chinese PTC patients. TERT promoter mutations but not the BRAF V600E mutation were associated with more advanced TNM stage upon diagnosis.
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Affiliation(s)
- Jian Sun
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Jing Zhang
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Junliang Lu
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Jie Gao
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Xinyu Ren
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Lianghong Teng
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Huanli Duan
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Yansong Lin
- Department of nuclear medicine, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Xiaoyi Li
- Department of surgery, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Bo Zhang
- Department of ultrasound, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Zhiyong Liang
- Department of Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China
- * E-mail:
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Ren X, Yuan L, Shen S, Wu H, Lu J, Liang Z. c-Met and ERβ expression differences in basal-like and non-basal-like triple-negative breast cancer. Tumour Biol 2016; 37:11385-95. [PMID: 26968553 DOI: 10.1007/s13277-016-5010-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/01/2016] [Indexed: 01/25/2023] Open
Abstract
Basal-like breast cancer (BLBC) and triple-negative breast cancer (TNBC) are two entities of breast cancer that share similar poor prognosis. Even though both cancers have overlaps, there are still some differences between those two types. It has been reported that the c-Met high expression was associated with poor prognosis not only in breast cancer but also in many other cancers. The role of ERβ in pathogenesis and treatment of breast cancer has remained controversial. In this study, we firstly distinguished basal-like from nonbasal-like cancer patients in TNBC patients using CK5/6 and EGFR as markers and next determined the relationship of basal-like breast cancer with c-Met or ERβ expression levels and prognosis in TNBC patients. One hundred twenty-seven patients who had been diagnosed with TNBC were enrolled. The clinical and pathological characteristics of the patients were recorded. The expression of EGFR, CK5/6, ERβ, and c-Met were evaluated with immunohistochemical methods using paraffin blocks. The median age of patients was 50.7 years. CK5/6 immunopositivity was 31.5 % (40/127), and EGFR was 40.2 % (51/127). Of the TNBC cases, 55.1 % (71/127) were positive for either CK5/6 or EGFR and were thus classified as basal-like breast cancer. C-Met (P < 0.001) and ERβ (P = 0.002) overexpression, small tumor sizes, a ductal subtype, and high-grade tumor were significantly correlated with BLBC. High c-Met expression was detected in 43.3 % patients. Metastatic lymph nodes and tumor size (>5 cm), which were both important prognostic predictors, were significantly associated with recurrence and mortality. BLBC typically demonstrates a unique profile. CK5/6 and EGFR expression combination indicates a higher basal-like phenotype possibility. The expression of c-Met and ERβ were significantly related to the basal-like phenotype. The classical markers, lymph node metastasis, and tumor size were found to have important prognostic value. However, high c-Met expression and basal-like phenotypes did not show a direct correlation with poor prognosis.
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Affiliation(s)
- Xinyu Ren
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Li Yuan
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Songjie Shen
- Department of Breast Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Hanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
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Gao J, Wu H, Wang L, Zhang H, Duan H, Lu J, Liang Z. Validation of targeted next-generation sequencing for RAS mutation detection in FFPE colorectal cancer tissues: comparison with Sanger sequencing and ARMS-Scorpion real-time PCR. BMJ Open 2016; 6:e009532. [PMID: 26747035 PMCID: PMC4716245 DOI: 10.1136/bmjopen-2015-009532] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To validate the targeted next-generation sequencing (NGS) platform-Ion Torrent PGM for KRAS exon 2 and expanded RAS mutations detection in formalin-fixed paraffin-embedded (FFPE) colorectal cancer (CRC) specimens, with comparison of Sanger sequencing and ARMS-Scorpion real-time PCR. SETTING Beijing, China. PARTICIPANTS 51 archived FFPE CRC samples (36 men, 15 women) were retrospectively randomly selected and then checked by an experienced pathologist for sequencing based on histological confirmation of CRC and availability of sufficient tissue. METHODS RAS mutations were detected in the 51 FFPE CRC samples by PGM analysis, Sanger sequencing and the Therascreen KRAS assay, respectively. Agreement among the 3 methods was assessed. Assay sensitivity was further determined by sequencing serially diluted DNA from FFPE cell lines with known mutation statuses. RESULTS 13 of 51 (25.5%) cases had a mutation in KRAS exon 2, as determined by PGM analysis. PGM analysis showed 100% (51/51) concordance with Sanger sequencing (κ=1.000, 95% CI 1 to 1) and 98.04% (50/51) agreement with the Therascreen assay (κ=0.947, 95% CI 0.844 to 1) for detecting KRAS exon 2 mutations, respectively. The only discrepant case harboured a KRAS exon 2 mutation (c.37G>T) that was not covered by the Therascreen kit. The dilution series experiment results showed that PGM was able to detect KRAS mutations at a frequency of as low as 1%. Importantly, RAS mutations other than KRAS exon 2 mutations were also detected in 10 samples by PGM. Furthermore, mutations in other CRC-related genes could be simultaneously detected in a single test by PGM. CONCLUSIONS The targeted NGS platform is specific and sensitive for KRAS exon 2 mutation detection and is appropriate for use in routine clinical testing. Moreover, it is sample saving and cost-efficient and time-efficient, and has great potential for clinical application to expand testing to include mutations in RAS and other CRC-related genes.
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Affiliation(s)
- Jie Gao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Li Wang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Huanli Duan
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China
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Sun J, Zhang J, Lu J, Gao J, Lu T, Ren X, Duan H, Liang Z. Immunohistochemistry is highly sensitive and specific for detecting the BRAF V600E mutation in papillary thyroid carcinoma. Int J Clin Exp Pathol 2015; 8:15072-15078. [PMID: 26823846 PMCID: PMC4713632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 10/21/2015] [Indexed: 06/05/2023]
Abstract
The V600E mutation in the B-type Raf kinase (BRAF) gene is a common genetic change in cases of papillary thyroid carcinoma (PTC) that appears to play a key role in the development and progression of this disease. We sought to assess the sensitivity and specificity of immunohistochemical detection of this mutation with a V600E mutated BRAF antibody in a Chinese PTC cohort. In this study, we used fully automated immunohistochemistry (IHC) assay with a BRAF V600E (VE1) mouse monoclonal primary antibody to screen for the BRAF V600E mutation in 556 cases of PTC. Moreover, to verify the IHC staining results, real-time PCR was applied to detect this mutation in the same patient cohort. Among the 556 cases in the examined primary PTC cohort, 414 (74.5%) cases and 419 (75.4%) cases were positive for the BRAF V600E mutation by IHC staining and by real-time PCR, respectively. The real-time PCR results indicated that the sensitivity and specificity of IHC staining for the BRAF V600E mutation were 98.8% and 100%, respectively. The BRAF V600E mutation was common among Chinese patients with primary PTC, and was strongly correlated with older patient age and the conventional subtype of PTC but was not associated with parameters of clinicopathological aggressiveness. The fully automated IHC is a reliable technique that can serve as an alternative to molecular biological approaches for the routine detection of the BRAF V600E mutation in PTC patients.
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Affiliation(s)
- Jian Sun
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Jing Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Jie Gao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Tao Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Xinyu Ren
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Huanli Duan
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730, People's Republic of China
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Duan H, Lu J, Lu T, Gao J, Zhang J, Xu Y, Wang M, Wu H, Liang Z, Liu T. Comparison of EGFR mutation status between plasma and tumor tissue in non-small cell lung cancer using the Scorpion ARMS method and the possible prognostic significance of plasma EGFR mutation status. Int J Clin Exp Pathol 2015; 8:13136-13145. [PMID: 26722512 PMCID: PMC4680457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/28/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND The aims were to compare the consistency of epidermal growth factor receptor (EGFR) mutations in the plasma and tumor tissue of NSCLC patients, and to explore the prognostic significance of plasma EGFR mutation status in tyrosine kinase inhibitors (TKIs)-treated patients with tumor EGFR mutation. METHODS We evaluated EGFR gene (exons 18, 19, 20 and 21) mutation status in paired plasma and tumor tissue from 94 NSCLC patients before EGFR-TKIs treatments using the Scorpion amplification refractory mutation system (Scorpion-ARMS) method. RESULTS Our results demonstrated that the rates for EGFR mutations in 94 NSCLC patients were 20% (19/94, plasma samples) and 40% (38/94, tumor tissue samples), respectively. The consistency of EGFR mutations between plasma and tissue reached 80% (75/94, P<0.001). The sensitivity of tests using plasma samples was 50% (19/38) and the specificity was 100% (49/49) compared with tissue samples. 29 of the 38 patients were treated with TKIs. Among the 29 patients, 14 patients had EGFR mutations in both plasma and tumor tissue, and these patients had a significantly shorter overall survival (OS) than those with EGFR mutations in tumor tissue only by univariate analysis (P=0.019). CONCLUSIONS Our data demonstrated the feasibility and potential utility of plasma cell-free DNA (cfDNA) as a source of specimens for EGFR mutation detection using the Scorpion ARMS method. Moreover, plasma EGFR mutation status before TKIs therapy might be of prognostic significance for TKIs-treated NSCLC patients with tumor tissue EGFR mutation.
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Affiliation(s)
- Huanli Duan
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Tao Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Jie Gao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Jing Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Yan Xu
- Department of Respiration, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Mengzhao Wang
- Department of Respiration, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
| | - Tonghua Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical ScienceNo. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, China
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Meng Z, Lu J, Wu H, Zhao Y, Luo Y, Gao J, Zhu Q, Jiang Y, Li W, Liang Z. Mutant-specific BRAF and CD117 immunocytochemistry potentially facilitate risk stratification for papillary thyroid carcinoma in fine-needle aspiration biopsy specimens. Tumour Biol 2015; 37:611-8. [PMID: 26240026 DOI: 10.1007/s13277-015-3837-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 07/22/2015] [Indexed: 01/21/2023] Open
Abstract
The study aims to test whether combination of mutant-specific BRAF and CD117 immunocytochemical (ICC) staining stratifies probability for papillary thyroid carcinoma (PTC) in thyroid fine-needle aspiration biopsy (FNAB) specimens. A consecutive cohort of cases diagnosed as atypia of undetermined significance (AUS) or suspicious for malignancy-suspicious for papillary thyroid carcinoma (SM-SPTC) from 30 December, 2011 to 23 October, 2014 in a single institute was enrolled. Forty cytologically benign and 50 cytologically diagnosed PTC within the same time span were also included. CD117 and mutant-specific BRAF (BRAF VE1) ICC staining was performed. Association of BRAF VE1 and CD117 expression with final diagnosis was analyzed. Both BRAF VE1 and CD117 showed good performance in distinguishing PTC from benign nodules. Combination of BRAF VE1 and CD117 stratified 180 cases into three categories: BRAF VE1 positive regardless of CD117 expression (ICC-malignant), BRAF VE1 negative plus low level of CD117 expression (ICC-intermediate), and BRAF VE1 negative plus high level of CD117 expression (ICC-benign), which was associated with 100, 75.6, and 0 % of malignancy. Combination of mutant-specific BRAF and CD117 ICC may potentially facilitate the PTC risk stratification in FNAB thyroid nodule specimens.
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Affiliation(s)
- Zhilan Meng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Yu Zhao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Yufeng Luo
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Jie Gao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Qingli Zhu
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Yuxin Jiang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Wenbo Li
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1#Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China.
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Sun JC, Xu M, Lu JL, Bi YF, Mu YM, Zhao JJ, Liu C, Chen LL, Shi LX, Li Q, Yang T, Yan L, Wan Q, Wu SL, Liu Y, Wang GX, Luo ZJ, Tang XL, Chen G, Huo YN, Gao ZN, Su Q, Ye Z, Wang YM, Qin GJ, Deng HC, Yu XF, Shen FX, Chen L, Zhao LB, Wang TG, Lai SH, Li DH, Wang WQ, Ning G. Associations of depression with impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes in Chinese adults. Diabet Med 2015; 32:935-43. [PMID: 25439630 DOI: 10.1111/dme.12649] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/25/2014] [Indexed: 12/29/2022]
Abstract
AIM To examine the association between depression and impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes in middle-aged and elderly Chinese people, and whether depression was associated with different treatment regimens or durations of diabetes. METHODS A cross-sectional study was performed among 229,047 adults living in the community aged ≥ 40 years from 25 centres in China. The self-reported depression rating scale Patient Health Questionnaire 9 (PHQ-9) was used to diagnose probable and sub-threshold depression. Glucose metabolism status was determined according to World Health Organization 1999 diagnostic criteria. RESULTS The numbers of participants with normal glucose regulation, impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes were 120,458, 59,512, 24,826 and 24,251, respectively. The prevalence of sub-threshold depression in the total sample of participants was 4.8% (4.8%, 4.8%, 4.4% and 5.6% from normal glucose regulation to previously diagnosed diabetes, respectively), and the prevalence of probable depression was 1.1% (1.1%, 1.0%, 0.9% and 1.8% from normal glucose regulation to previously diagnosed diabetes, respectively). Compared with participants with normal glucose regulation, those with previously diagnosed diabetes had increased odds of probable depression [odds ratio (OR) = 1.61, 95% confidence interval (CI) 1.39-1.87] and sub-threshold depression (OR = 1.14, 95% CI 1.06-1.24), after adjustment for multiple confounding factors. Newly diagnosed diabetes or impaired glucose regulation was not associated with depression. Among those with previously diagnosed diabetes, insulin treatment was associated with greater odds of depression compared with no treatment or oral anti-diabetic medicine. CONCLUSION Previously diagnosed diabetes, but not newly diagnosed diabetes or impaired glucose regulation, was associated with a higher prevalence of depression. Patients receiving insulin were more likely to have depression than those not receiving treatment or being treated with oral anti-diabetic medicine.
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Affiliation(s)
- J C Sun
- Laboratory of Endocrine and Metabolic Diseases, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J L Lu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y F Bi
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y M Mu
- People's Liberation Army General Hospital, Beijing, China
| | - J J Zhao
- Shandong Provincial Hospital, Jinan, China
| | - C Liu
- Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing, China
| | - L L Chen
- Wuhan Xiehe Hospital, Huazhong University of Science and Technology School of Medicine, Wuhan, China
| | - L X Shi
- Affiliated Hospital of Guiyang Medical College, Guiyang, China
| | - Q Li
- The Second Affilliated Hospital of Haerbin Medical University, Haerbin, China
| | - T Yang
- The First Affiliated Hospital with Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - L Yan
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Q Wan
- The Affiliated Hospital of Luzhou Medical College, Luzhou, China
| | - S L Wu
- Xinjiang Kelamayi Peoples Hospital, Kelamayi, China
| | - Y Liu
- The First Hospital of Jilin University, Changchun, China
| | - G X Wang
- The First Hospital of Jilin University, Changchun, China
| | - Z J Luo
- The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - X L Tang
- The First Hospital of Lanzhou University, Lanzhou, China
| | - G Chen
- Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Y N Huo
- Jiangxi Peoples Hospital, Nanchang, China
| | - Z N Gao
- Dalian Municipal Central Hospital, Dalian, China
| | - Q Su
- Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Ye
- Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Y M Wang
- The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - G J Qin
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - H C Deng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - X F Yu
- Wuhan Tongji Hospital, Huazhong University of Science and Technology School of Medicine, Wuhan, China
| | - F X Shen
- The First Affiliated Hospital of Wenzhou Medical University, The First Provincial Wenzhou Hospital of Zhejiang, Wenzhou, China
| | - L Chen
- Qilu Hospital, University of Shandong School of Medicine, Jinan, China
| | - L B Zhao
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - T G Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S H Lai
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D H Li
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, >TX, USA
| | - W Q Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - G Ning
- Laboratory of Endocrine and Metabolic Diseases, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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41
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Lu J, Gao J, Zhang J, Sun J, Wu H, Shi X, Teng L, Liang Z. Association between BRAF V600E mutation and regional lymph node metastasis in papillary thyroid carcinoma. Int J Clin Exp Pathol 2015; 8:793-799. [PMID: 25755776 PMCID: PMC4348874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND BRAF V600E is the most frequent genetic alteration in papillary thyroid carcinoma (PTC); there are ongoing conflicts on its association with regional lymph node metastasis. And we aimed to test this association in a referred sample in a single institute in China. METHODS We analyzed BRAF V600E mutational status in the primary lesion of 150 PTC cases in Peking Union Medical College Hospital (PUMCH) and their corresponding lymph node metastasis (if present and available) using a validated Amplification Refractory Mutation System Polymerase Chain Reaction (ARMS-PCR) method. RESULTS Among 150 PTC cases, 121 (80.6%) primary tumors harbored BRAF V600E mutation, 66.9% (81/121) and 79.3% (23/29) had regional lymph node metastasis (LNM) in cases detected with and without BRAF V600E mutation, respectively (P = 0.195). The BRAF V600E mutational status of most of the metastatic lesions was not different to that of their primary foci (73 out of 76 cases, 96.1%, Kappa value = 0.893). The 3 inconsistent cases were all mutation positive for primary tumors and mutation negative for LNM. CONCLUSION No association was established between BRAF V600E mutation and regional lymph node metastasis in PTC in Chinese patients.
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Affiliation(s)
- Junliang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Jie Gao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Jing Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Jian Sun
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Xiaohua Shi
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
| | - Lianghong Teng
- Department of Pathology, Xuanwu Hospital, Capital Medical UniversityPeople’s Republic of China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegePeople’s Republic of China
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42
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Lu J, Liang Z. [Molecular alterations in follicular cell-derived thyroid cancer]. Zhonghua Bing Li Xue Za Zhi 2014; 43:853-855. [PMID: 25623990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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43
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Ye JH, Jin J, Liang HL, Lu JL, Du YY, Zheng XQ, Liang YR. Using tea stalk lignocellulose as an adsorbent for separating decaffeinated tea catechins. Bioresour Technol 2009; 100:622-628. [PMID: 18710802 DOI: 10.1016/j.biortech.2008.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2008] [Revised: 07/01/2008] [Accepted: 07/02/2008] [Indexed: 05/26/2023]
Abstract
Lignocelluloses prepared from woody tea stalk, pine sawdust and sugarcane bagasse were used as adsorbents to isolate decaffeinated catechins from tea extracts and compared with synthetic macroporous resin HPD 600. HPD 600 had the highest adsorption capacity to catechins, followed by tea stalk lignocellulose while lignocelluloses of pine sawdust and bagasse the least. Tea stalk lignocellulose absorbed preferentially tea catechins and showed a good selectivity. HPD 600 absorbed caffeine and tea catechins simultaneously. The kinetics data of tea stalk lignocellulose showed a good fit with the Langmuir isotherm model. It is considered that tea stalk lignocellulose is an alternative low-cost adsorbent for preparing decaffeinated tea catechins.
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Affiliation(s)
- J H Ye
- Zhejiang University, Tea Research Institute, 268 Kaixuan Road, Hangzhou 310029, China
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44
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Deng ZT, Lin H, Ji W, Gao L, Lin X, Cheng ZH, He XB, Lu JL, Shi DX, Hofer WA, Gao HJ. Selective analysis of molecular states by functionalized scanning tunneling microscopy tips. Phys Rev Lett 2006; 96:156102. [PMID: 16712171 DOI: 10.1103/physrevlett.96.156102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Revised: 03/24/2006] [Indexed: 05/09/2023]
Abstract
Selective analysis of molecular states in scanning tunneling microscopy (STM) has so far been achieved in a few cases by tuning the bias range of the STM in high-resolution measurements. Correspondingly, perylene adsorbed in a close-packed monolayer on Ag(110) is imaged mainly through the pi states of the molecule. By contrast, functionalizing the STM tip with a perylene molecule leads to a mismatch between the energy levels of the STM tip and the molecule adsorbates and, instead, images only the metal states of the underlying silver surface. The observation opens a route for better energy selectivity in electron transport measurements through organic interfaces.
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Affiliation(s)
- Z T Deng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China
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Abstract
BACKGROUND Although there has been some disagreement, there is growing evidence now that psychopathology is a comorbidity of morbid obesity among patients seeking bariatric surgery. The aim of this study was to determine whether psychopathology decreases following this surgery. METHODS Utilizing a national sample, this study focused on pre- and post-surgery scores on the Minnesota Multiphasic Personality Inventory, Second Edition (MMPI-2). The MMPI-2 was administered first during the pre-surgery medical examination, and again between 6 months and 1 year following surgery. RESULTS Validity scale scores on the pre- and post-surgery MMPI-2s indicated that there was no impediment to interpreting the clinical scale scores of these tests. There was a pervasive pattern of statistically significant decreases in pre- to post-surgery clinical scale scores. Further, comparison of MMPI-2 clinical scale scores to available test norms showed that the number of participants showing signs of mental disorders was unusually high before surgery, and at or below the test norms following surgery. CONCLUSIONS There is clear evidence in this study that psychopathology declines following bariatric surgery. The unusually high levels of psychopathology before surgery may be a joint function of the factors producing the morbid obesity, and a reaction to the obesity itself. That psychopathology declines following surgery to levels expected in the general population indicates that the patients were becoming more positive about their lives.
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Affiliation(s)
- S R Maddi
- Department of Psychology and Social Behavior, School of Social Ecology, University of California, 3340 Social Ecology II, Irvine, CA 92697-7085, USA.
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Fan CK, Liao CW, Kao TC, Lu JL, Su KE. Toxoplasma gondii infection: relationship between seroprevalence and risk factors among inhabitants in two offshore islands from Taiwan. Acta Med Okayama 2001; 55:301-8. [PMID: 11688954 DOI: 10.18926/amo/32014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A seroepidemiological study of toxoplasmosis among inhabitants of Penghu Island and Kinmen Island offshore of Taiwan was performed using the latex agglutination test from July 1999 to June 2000. In order to determine risk factors for Toxoplasma gondii (T. gondii) infection, the effects of a history of eating raw/undercooked meats and raising pets were focused on using a self-administrated questionnaire. The seroprevalence (28.2%; 190/673) in Kinmen Island was significantly higher than that (2.71%; 8/293) in Penghu Island (P < 0.001). A significant difference in seroprevalence between both sexes was found in Kinmen Island (P < 0.05), but not in Penghu Island. The results of multiple logistic regression analysis showed that the older the age, the higher the OR in both Islands, yet a significant difference in seroprevalence between children and adults or the elderly was observed in Kinmen Island (P < 0.001). Moreover, those who had histories of raising cats or eating raw/undercooked meats seemed to have greater opportunities to become infected with T. gondii (OR = 2.9, 95% CI = 1.9-4.5, P < 0.001; OR = 1.5, 95% CI = 1.1-2.1, P < 0.05). In Penghu Island, a significant association between seroprevalence and a history of raising cats was also observed (OR = 4.6, 95% CI = 1.1-20.1, P < 0.05). Furthermore, workers, farmers, and fishermen seemed to be more susceptible to T. gondii infection than students in Kinmen Island.
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Affiliation(s)
- C K Fan
- Department of Parasitology, College of Medicine, Taipei Medical University, Taiwan, Republic of China.
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47
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Benedict CR, Lu JL, Pettigrew DW, Liu J, Stipanovic RD, Williams HJ. The cyclization of farnesyl diphosphate and nerolidyl diphosphate by a purified recombinant delta-cadinene synthase. Plant Physiol 2001; 125:1754-65. [PMID: 11299356 PMCID: PMC88832 DOI: 10.1104/pp.125.4.1754] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2000] [Accepted: 11/20/2000] [Indexed: 05/20/2023]
Abstract
The first step in the conversion of the isoprenoid intermediate, farnesyl diphosphate (FDP), to sesquiterpene phytoalexins in cotton (Gossypium barbadense) plants is catalyzed by delta-cadinene (CDN) synthase. CDN is the precursor of desoxyhemigossypol and hemigossypol defense sesquiterpenes. In this paper we have studied the mechanism for the cyclization of FDP and the putative intermediate, nerolidyl diphosphate, to CDN. A purified recombinant CDN synthase (CDN1-C1) expressed in Escherichia coli from CDN1-C1 cDNA isolated from Gossypium arboreum cyclizes (1RS)-[1-2H](E, E)-FDP to >98% [5-2H]and [11-2H]CDN. Enzyme reaction mixtures cyclize (3RS)-[4,4,13,13,13-2H5]-nerolidyl diphosphate to 62.1% [8,8,15,15,15-2H5]-CDN, 15.8% [6,6,15,15,15-2H5]-alpha-bisabolol, 8.1% [6,6,15,15,15-2H5]-(beta)-bisabolene, 9.8% [4,4,13,13-2H4]-(E)-beta-farnesene, and 4.2% unknowns. Competitive studies show that (3R)-nerolidyl diphosphate is the active enantiomer of (3RS)-nerolidyl diphosphate that cyclized to CDN. The kcat/Km values demonstrate that the synthase uses (E,E)-FDP as effectively as (3R)-nerolidyl diphosphate in the formation of CDN. Cyclization studies with (3R)-nerolidyl diphosphate show that the formation of CDN, (E)-beta-farnesene, and beta-bisabolene are enzyme dependent, but the formation of alpha-bisabolol in the reaction mixtures was a Mg2+-dependent solvolysis of nerolidyl diphosphate. Enzyme mechanisms are proposed for the formation of CDN from (E,E)-FDP and for the formation of CDN, (E)-beta-farnesene, and beta-bisabolene from (3RS)-nerolidyl diphosphate. The primary structures of cotton CDN synthase and tobacco epi-aristolochene synthase show 48% identity, suggesting similar three-dimensional structures. We used the SWISS-MODEL to test this. The two enzymes have the same overall structure consisting of two alpha-helical domains and epi-aristolochene synthase is a good model for the structure of CDN synthase. Several amino acids in the primary structures of both synthases superimpose. The amino acids having catalytic roles in epi-aristochene synthase are substituted in the CDN synthase and may be related to differences in catalytic properties.
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Affiliation(s)
- C R Benedict
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843-2128, USA.
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Lu JL, Sheikh KA, Wu HS, Zhang J, Jiang ZF, Cornblath DR, McKhann GM, Asbury AK, Griffin JW, Ho TW. Physiologic-pathologic correlation in Guillain-Barré syndrome in children. Neurology 2000; 54:33-9. [PMID: 10636122 DOI: 10.1212/wnl.54.1.33] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To correlate electrophysiologic patterns with sural nerve pathology in children with Guillain-Barré syndrome (GBS). BACKGROUND Based on electrophysiologic and pathologic observations, GBS has been divided into demyelinating and axonal subtypes. The acute motor axonal neuropathy (AMAN) involves predominantly motor nerve fibers with a physiologic pattern suggesting axonal damage, whereas the acute inflammatory demyelinating polyneuropathy (AIDP) involves both motor and sensory nerve fibers with a physiologic pattern suggesting demyelination. In this study, we sought to confirm these observations by correlating sural nerve pathology with electrophysiologic findings in GBS patients. METHODS Biopsies of sural nerve from 29 of 50 prospectively studied GBS patients were obtained. Nerves were examined by light and electron microscopy, and with immunocytochemistry for macrophages, lymphocytes, and complement activation products. RESULTS Sural nerves from AMAN patients were normal or had only a few (0.1% to 0.7%) degenerating fibers without lymphocytic infiltration or complement activation. One patient with reduced sural sensory nerve action potential classified as acute motor sensory axonal neuropathy (AMSAN) had many degenerating fibers (2.3%) in the sural nerve. All three AIDP patients displayed active demyelination, and in two patients, lymphocytic infiltration and complement activation products were observed on the abaxonal Schwann cell surface. CONCLUSION Classification of Guillain-Barré syndrome subtypes based on motor conduction studies correlates closely with pathologic changes seen in sural nerve. In acute motor axonal neuropathy cases, the sural nerve is almost completely spared pathologically. In acute inflammatory demyelinating polyneuropathy cases, macrophage-mediated demyelination and lymphocytic infiltration are common in the biopsies of sural nerves.
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Affiliation(s)
- J L Lu
- Department of Neurology, Beijing Children's Hospital, PRC
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49
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Zheng YH, Sentsui H, Sugita M, Nakaya T, Kishi M, Hagiwara K, Inoshima Y, Ishihara C, Kono Y, Lu JL, Ikuta K. Replication ability in vitro and in vivo of equine infectious anemia virus avirulent Japanese strain. Virology 2000; 266:129-39. [PMID: 10612667 DOI: 10.1006/viro.1999.0076] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An attenuated equine infectious anemia virus (EIAV), V26, was previously prepared by 50 passages of the Japanese virulent strain V70 in primary horse macrophage culture. The horses inoculated with this V26 virus were shown to raise neutralizing antibodies against V70 without any viremia. Here, we investigated the in vitro and in vivo replication ability of V26. Comparison of the long-terminal repeat (LTR) sequences between V26 and V70 revealed a large insertion within the LTR U3 hypervariable region of V26. V26 with the mutation in the LTR showed much higher promoter activity in vitro than V70. This is consistent with the much higher replication rate of V26 in horse primary macrophage cultures compared with V70. In sharp contrast, we failed to identify the V26-specific LTR sequence by PCR, at least in sequential samples of plasma or peripheral blood mononuclear cells derived from three horses until day 62 after V26 inoculation. In contrast, antibody responses to EIAV were observed in all horses. The results suggest that the replication ability of V26 in vivo is extremely low. When one of the horses was subsequently challenged with cell-associated V70, it was found that the horse became PCR positive for EIAV. There was no LTR mutation in EIAV genome in samples periodically prepared from the V70-challenged horse. Thus it was suggested that the LTR mutation in EIAV, which occurs during serial passage in vitro, affects EIAV replication in vitro and in vivo.
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Affiliation(s)
- Y H Zheng
- Institute of Immunological Science, Hokkaido University, Sapporo, Kita-ku, Japan
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50
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Lu JL, Schmiege LM, Kuo L, Liao JC. Downregulation of endothelial constitutive nitric oxide synthase expression by lipopolysaccharide. Biochem Biophys Res Commun 1996; 225:1-5. [PMID: 8769085 DOI: 10.1006/bbrc.1996.1121] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Lipopolysaccharide (LPS), a causal agent of sepsis, has been shown to induce systemic nitric oxide (NO) synthesis through complex mechanisms. However, the effect of LPS on endothelial cells is incompletely understood. To investigate the mechanism by which LPS influences the release of NO from endothelial cells, the effect of this compound on endothelial constitutive nitric oxide synthase (ecNOS) was studied in cultured bovine coronary venular endothelial cells. Western and Northern analyses showed that LPS decreased ecNOS expression at the protein and mRNA levels in a time-dependent and dose-responsive manner. Concurrent treatment of the endothelial cells with LPS and a transcription inhibitor, actinomycin D, resulted in decreased ecNOS mRNA within 8 hours. In contrast, treatment with actinomycin D had only a relatively insignificant effect on the ecNOS transcript level. This result suggests that the reduction of ecNOS by LPS resulted from an increased degradation rate of its transcript.
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Affiliation(s)
- J L Lu
- Department of Chemical Engineering, Texas A&M University, College Station 77843-3122, USA
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