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Sheng H, Ma L, Samson JF, Liu D. BarlowTwins-CXR: enhancing chest X-ray abnormality localization in heterogeneous data with cross-domain self-supervised learning. BMC Med Inform Decis Mak 2024; 24:126. [PMID: 38755563 PMCID: PMC11097466 DOI: 10.1186/s12911-024-02529-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 05/07/2024] [Indexed: 05/18/2024] Open
Abstract
BACKGROUND Chest X-ray imaging based abnormality localization, essential in diagnosing various diseases, faces significant clinical challenges due to complex interpretations and the growing workload of radiologists. While recent advances in deep learning offer promising solutions, there is still a critical issue of domain inconsistency in cross-domain transfer learning, which hampers the efficiency and accuracy of diagnostic processes. This study aims to address the domain inconsistency problem and improve autonomic abnormality localization performance of heterogeneous chest X-ray image analysis, particularly in detecting abnormalities, by developing a self-supervised learning strategy called "BarlwoTwins-CXR". METHODS We utilized two publicly available datasets: the NIH Chest X-ray Dataset and the VinDr-CXR. The BarlowTwins-CXR approach was conducted in a two-stage training process. Initially, self-supervised pre-training was performed using an adjusted Barlow Twins algorithm on the NIH dataset with a Resnet50 backbone pre-trained on ImageNet. This was followed by supervised fine-tuning on the VinDr-CXR dataset using Faster R-CNN with Feature Pyramid Network (FPN). The study employed mean Average Precision (mAP) at an Intersection over Union (IoU) of 50% and Area Under the Curve (AUC) for performance evaluation. RESULTS Our experiments showed a significant improvement in model performance with BarlowTwins-CXR. The approach achieved a 3% increase in mAP50 accuracy compared to traditional ImageNet pre-trained models. In addition, the Ablation CAM method revealed enhanced precision in localizing chest abnormalities. The study involved 112,120 images from the NIH dataset and 18,000 images from the VinDr-CXR dataset, indicating robust training and testing samples. CONCLUSION BarlowTwins-CXR significantly enhances the efficiency and accuracy of chest X-ray image-based abnormality localization, outperforming traditional transfer learning methods and effectively overcoming domain inconsistency in cross-domain scenarios. Our experiment results demonstrate the potential of using self-supervised learning to improve the generalizability of models in medical settings with limited amounts of heterogeneous data. This approach can be instrumental in aiding radiologists, particularly in high-workload environments, offering a promising direction for future AI-driven healthcare solutions.
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Affiliation(s)
- Haoyue Sheng
- Département d'informatique et de recherche opérationnelle, Université de Montréal, 2920 chemin de la Tour, Montréal, H3T 1J4, QC, Canada.
- Mila - Quebec AI Institute, 6666 Rue Saint-Urbain, Montréal, H2S 3H1, QC, Canada.
- Direction des ressources informationnelles, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, 400 Blvd. De Maisonneuve Ouest, Montréal, H3A 1L4, QC, Canada.
| | - Linrui Ma
- Département d'informatique et de recherche opérationnelle, Université de Montréal, 2920 chemin de la Tour, Montréal, H3T 1J4, QC, Canada
- Mila - Quebec AI Institute, 6666 Rue Saint-Urbain, Montréal, H2S 3H1, QC, Canada
| | - Jean-François Samson
- Direction des ressources informationnelles, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, 400 Blvd. De Maisonneuve Ouest, Montréal, H3A 1L4, QC, Canada
| | - Dianbo Liu
- Mila - Quebec AI Institute, 6666 Rue Saint-Urbain, Montréal, H2S 3H1, QC, Canada
- School of Medicine and College of Design and Engineering, National University of Singapore, 21 Lower Kent Ridge Rd, Singapore, 119077, SG, Singapore
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2
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Zhang J, Wei J, Sun R, Sheng H, Yin K, Pan Y, Jimenez R, Chen S, Cui XL, Zou Z, Yue Z, Emch MJ, Hawse JR, Wang L, He HH, Xia S, Han B, He C, Huang H. A lncRNA from the FTO locus acts as a suppressor of the m 6A writer complex and p53 tumor suppression signaling. Mol Cell 2023; 83:2692-2708.e7. [PMID: 37478845 PMCID: PMC10427207 DOI: 10.1016/j.molcel.2023.06.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 04/23/2023] [Accepted: 06/21/2023] [Indexed: 07/23/2023]
Abstract
N6-methyladenosine (m6A) of mRNAs modulated by the METTL3-METTL14-WTAP-RBM15 methyltransferase complex and m6A demethylases such as FTO play important roles in regulating mRNA stability, splicing, and translation. Here, we demonstrate that FTO-IT1 long noncoding RNA (lncRNA) was upregulated and positively correlated with poor survival of patients with wild-type p53-expressing prostate cancer (PCa). m6A RIP-seq analysis revealed that FTO-IT1 knockout increased mRNA m6A methylation of a subset of p53 transcriptional target genes (e.g., FAS, TP53INP1, and SESN2) and induced PCa cell cycle arrest and apoptosis. We further showed that FTO-IT1 directly binds RBM15 and inhibits RBM15 binding, m6A methylation, and stability of p53 target mRNAs. Therapeutic depletion of FTO-IT1 restored mRNA m6A level and expression of p53 target genes and inhibited PCa growth in mice. Our study identifies FTO-IT1 lncRNA as a bona fide suppressor of the m6A methyltransferase complex and p53 tumor suppression signaling and nominates FTO-IT1 as a potential therapeutic target of cancer.
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Affiliation(s)
- Jianong Zhang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA; Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai 200080, China.
| | - Jiangbo Wei
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
| | - Rui Sun
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Haoyue Sheng
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Kai Yin
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA; Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212002, China
| | - Yunqian Pan
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Rafael Jimenez
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Sujun Chen
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Xiao-Long Cui
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
| | - Zhongyu Zou
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
| | - Zhiying Yue
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Michael J Emch
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - John R Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Liguo Wang
- Department of Computation Biology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Housheng Hansen He
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Shujie Xia
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai 200080, China
| | - Bangmin Han
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Hongkou District, Shanghai 200080, China
| | - Chuan He
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA.
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
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3
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Zhang M, Sheng C, You H, Cai M, Gao J, Cheng X, Sheng H, Qu S. Comparing the bone mineral density among male patients with latent autoimmune diabetes and classical type 1 and type 2 diabetes, and exploring risk factors for osteoporosis. J Endocrinol Invest 2021; 44:1659-1665. [PMID: 33387352 DOI: 10.1007/s40618-020-01472-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/21/2020] [Indexed: 12/21/2022]
Abstract
AIMS This study aimed to compare the bone mineral densities (BMDs) among male patients with latent autoimmune diabetes in adults (LADA), classical type 1 diabetes (T1DM), and type 2 diabetes (T2DM), and to examine the risk factors for developing low BMD in these patients. PATIENTS AND METHODS Between January 2017 and October 2020, a total of 57, 67, and 223 male patients with LADA, classical T1DM, and T2DM, respectively, were recruited from the endocrinology department of Shanghai Tenth People's Hospital. Hormonal markers of bone metabolism, lipid profiles, uric acid, glycosylated hemoglobin A1c (HbA1c), and beta-cell function were measured using blood samples. BMD was measured at the lumbar spine, femoral neck, and right hip by dual-energy X-ray absorptiometry. RESULTS The mean BMD values from all three skeletal sites in male patients with LADA were comparable to those with classical T1DM but were much lower than those with T2DM. After adjusting for confounding factors, multiple linear regression analysis demonstrated that in all male patients with diabetes, body mass index (BMI), uric acid, and fasting C-peptide showed significant positive associations with BMD at all three skeletal sites; however, osteocalcin showed a negative association at all three sites. CONCLUSIONS Compared with male patients with T2DM, lower BMDs were observed in patients with LADA and T1DM. Low BMI, uric acid, C-peptide levels, and high osteocalcin levels are risk factors for developing low BMD in male patients with diabetes.
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Affiliation(s)
- M Zhang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China.
| | - C Sheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - H You
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - M Cai
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - J Gao
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - X Cheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - H Sheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - S Qu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China
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4
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He Y, Wang L, Wei T, Xiao YT, Sheng H, Su H, Hollern DP, Zhang X, Ma J, Wen S, Xie H, Yan Y, Pan Y, Hou X, Tang X, Suman VJ, Carter JM, Weinshilboum R, Wang L, Kalari KR, Weroha SJ, Bryce AH, Boughey JC, Dong H, Perou CM, Ye D, Goetz MP, Ren S, Huang H. FOXA1 overexpression suppresses interferon signaling and immune response in cancer. J Clin Invest 2021; 131:e147025. [PMID: 34101624 DOI: 10.1172/jci147025] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [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: 12/18/2020] [Accepted: 06/03/2021] [Indexed: 12/12/2022] Open
Abstract
Androgen receptor-positive prostate cancer (PCa) and estrogen receptor-positive luminal breast cancer (BCa) are generally less responsive to immunotherapy compared with certain tumor types such as melanoma. However, the underlying mechanisms are not fully elucidated. In this study, we found that FOXA1 overexpression inversely correlated with interferon (IFN) signature and antigen presentation gene expression in PCa and BCa patients. FOXA1 bound the STAT2 DNA-binding domain and suppressed STAT2 DNA-binding activity, IFN signaling gene expression, and cancer immune response independently of the transactivation activity of FOXA1 and its mutations detected in PCa and BCa. Increased FOXA1 expression promoted cancer immuno- and chemotherapy resistance in mice and PCa and BCa patients. These findings were also validated in bladder cancer expressing high levels of FOXA1. FOXA1 overexpression could be a prognostic factor to predict therapy resistance and a viable target to sensitize luminal PCa, BCa, and bladder cancer to immuno- and chemotherapy.
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Affiliation(s)
- Yundong He
- Department of Biochemistry and Molecular Biology.,Department of Urology, and
| | - Liguo Wang
- Division of Computational Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Ting Wei
- Division of Computational Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Yu-Tian Xiao
- Department of Urology, Shanghai Changhai Hospital, Shanghai, China
| | - Haoyue Sheng
- Department of Biochemistry and Molecular Biology.,Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hengchuan Su
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Daniel P Hollern
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital of Jinlin University, Changchun, Jilin, China
| | - Jian Ma
- Department of Biochemistry and Molecular Biology.,Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Simeng Wen
- Department of Biochemistry and Molecular Biology
| | - Hongyan Xie
- Department of Biochemistry and Molecular Biology
| | - Yuqian Yan
- Department of Biochemistry and Molecular Biology
| | - Yunqian Pan
- Department of Biochemistry and Molecular Biology
| | | | - Xiaojia Tang
- Division of Computational Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Vera J Suman
- Division of Computational Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Jodi M Carter
- Department of Laboratory Medicine and Pathology, and
| | - Richard Weinshilboum
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Liewei Wang
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Krishna R Kalari
- Division of Computational Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | | | - Alan H Bryce
- Division of Hematology and Oncology, Department of Internal Medicine, Mayo Clinic College of Medicine and Science, Phoenix, Arizona, USA
| | | | - Haidong Dong
- Department of Urology, and.,Department of Immunology, and
| | - Charles M Perou
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Matthew P Goetz
- Department of Oncology.,Mayo Clinic Cancer Center, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
| | - Shancheng Ren
- Department of Urology, Shanghai Changhai Hospital, Shanghai, China
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology.,Department of Urology, and.,Mayo Clinic Cancer Center, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA
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5
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Sheng H, Guo YH, Cao DS, Li XJ, Zhao Y, Ding H, Zhang YL, Chen ZH. MiR-429-5p attenuates the migration and invasion of malignant melanoma by targeting LIMK1. Eur Rev Med Pharmacol Sci 2021; 24:2625-2631. [PMID: 32196612 DOI: 10.26355/eurrev_202003_20531] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the potential effects of microRNA-429-5p (miR-429-5p) on the development of malignant melanoma (MM) and the relevant mechanism. PATIENTS AND METHODS Quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) was used to detect the differential expression of miR-429-5p in MM tissues. The relationship between miR-429-5p expression and clinical pathological data of MM patients was analyzed. LIM kinase 1 (LIMK1) was verified as a downstream target of miR-429-5p by online prediction software, and the interaction between LIMK1 and miR-429-5p was verified by Dual-Luciferase reporter assay. RESULTS Compared with normal skin tissues, miR-429-5p was downregulated in MM tissues. MiR-429-5p expression was correlated with tumor size and stage of MM. Upregulation of miR-429-5p significantly inhibited protein expression of LIMK1 and reduced migration and invasion ability of MM cells. LIMK1 was involved in MM progression regulated by miR-429-5p. CONCLUSIONS MiR-429-5p attenuates migration and invasion in MM by targeting LIMK1. Hence, miR-429-5p/LIMK1 axis might be a potential therapeutic target for the treatment of MM.
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Affiliation(s)
- H Sheng
- Department of Plastic Surgery, Fuyang People's Hospital, Fuyang, China.
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Zhou Y, Jin X, Ma J, Ding D, Huang Z, Sheng H, Yan Y, Pan Y, Wei T, Wang L, Wu H, Huang H. HDAC5 Loss Impairs RB Repression of Pro-Oncogenic Genes and Confers CDK4/6 Inhibitor Resistance in Cancer. Cancer Res 2021; 81:1486-1499. [PMID: 33419772 DOI: 10.1158/0008-5472.can-20-2828] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/11/2020] [Accepted: 01/04/2021] [Indexed: 12/26/2022]
Abstract
The tumor-suppressor protein RB acts as a transcription repressor via interaction of its pocket domain with an LXCXE motif in histone deacetylase (HDAC) proteins such as HDAC1. Here, we demonstrate that HDAC5 deficient for the LXCXE motif interacts with both RB-N (via an FXXXV motif) and RB-C segments, and such interactions are diminished by phosphorylation of RB serine-249/threonine-252 and threonine-821. HDAC5 was frequently downregulated or deleted in human cancers such as prostate cancer. Loss of HDAC5 increased histone H3 lysine 27 acetylation (H3K27-ac) and circumvented RB-mediated repression of cell-cycle-related pro-oncogenic genes. HDAC5 loss also conferred resistance to CDK4/6 inhibitors such as palbociclib in prostate and breast cancer cells in vitro and prostate tumors in vivo, but this effect was overcome by the BET-CBP/p300 dual inhibitor NEO2734. Our findings reveal an unknown role of HDAC5 in RB-mediated histone deacetylation and gene repression and define a new mechanism modulating CDK4/6 inhibitor therapeutic sensitivity in cancer cells. SIGNIFICANCE: This study defines a previously uncharacterized role of HDAC5 in tumor suppression and provides a viable strategy to overcome CDK4/6 inhibitor resistance in HDAC5-deficent cancer.
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Affiliation(s)
- Yingke Zhou
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Xin Jin
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Ma
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Donglin Ding
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Zhenlin Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Haoyue Sheng
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Yuqian Yan
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Yunqian Pan
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Ting Wei
- Division of Biomedical Statistics and Informatics, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Liguo Wang
- Division of Biomedical Statistics and Informatics, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Heshui Wu
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota. .,Department of Urology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Mayo Clinic Cancer Center, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
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7
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Sheng H, Cong DL, Ju HY. [Functional Characterization of ZmHAK1 Promoter and Its Regulatory Transcription Factors in Maize]. Mol Biol (Mosk) 2020; 54:374-388. [PMID: 32492001 DOI: 10.31857/s0026898420030155] [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: 01/07/2019] [Accepted: 03/14/2019] [Indexed: 11/24/2022]
Abstract
Potassium (K^(+)) deficiency in the soil may seriously affect the yield and quality of plants, which usually satisfy their potassium requirements by engaging their K^(+) transporters and/or channels. High-affinity potassium transporter (ZmHAK) family members play crucial role in the uptake and distribution of K^(+) in maize (Zea mays L.). Here, we describe the function of ZmHAK1 promoter and its upstream regulatory transcription factors in maize. In this plant, HAK gene family includes 34 protein-encoding members, with their phylogenetic tree analysis showing both evolutionary conservativeness and diversity. ZmHAK1 gene promoter contains many functional elements related to abiotic stress. Reporter construct pCambia1301:ProZmHAK1:GUS shows that the ZmHAK1 gene is active in the roots, stems, and leaves. Using yeast one-hybrid experiment, we showed that the ZmHAK1 promoter interacts with the transcription factors ZmRAP2.11 and ZmARF2, and that these interactions occur on different fragments of the ZmHAK1 promoter. Transcription factor ZmRAP2.11 localizes in the nucleus, while ZmARF2 is found both in the nucleus and in the cell cytoplasm. In conclusion, our results suggest that the ZmHAK1 regulation has an important role in the process of absorbing potassium ions, and possibly in the response of maize to abiotic stress.
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Affiliation(s)
- H Sheng
- College of Plant Science, Jilin University, Changchun, 130062 P. R. China
| | - D L Cong
- College of Pharmacy; Jilin University, Changchun, 130021 P. R. China
| | - H Y Ju
- College of Plant Science, Jilin University, Changchun, 130062 P. R. China.,
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8
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Lin Y, Xu J, Li X, Sheng H, Su L, Wu M, Cheng J, Huang Y, Mao X, Zhou Z, Zhang W, Li C, Cai Y, Wu D, Lu Z, Yin X, Zeng C, Liu L. Novel variants and uncommon cases among southern Chinese children with X-linked hypophosphatemia. J Endocrinol Invest 2020; 43:1577-1590. [PMID: 32253725 DOI: 10.1007/s40618-020-01240-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022]
Abstract
PURPOSE X-linked hypophosphatemia (XLH) is the most common inherited renal phosphate wasting disorder and is often misdiagnosed as vitamin D deficiency. This study aims to provide clinical and mutational characteristics of 65 XLH pediatric patients in southern China. METHODS In this work, a combination of DNA sequencing and qPCR analysis was used to study the PHEX gene in 80 pediatric patients diagnosed with hypophosphatemia. The clinical and laboratory data of confirmed 65 XLH patients were assessed and analyzed retrospectively. RESULTS In 65 XLH patients from 61 families, 51 different variants in the PHEX gene were identified, including 23 previously reported variants and 28 novel variants. In this cohort of XLH patients, the c.1601C>T(p.Pro534Leu) variant appears more frequently. Fourteen uncommon XLH cases were described, including four boys with de novo mosaic variants, eight patients with large deletions and a pair of monozygotic twins. The clinical manifestations in this cohort are very similar to those previously reported. CONCLUSION This study extends the mutational spectrum of the PHEX gene, which will contribute to accurate diagnosis. This study also suggests a supplementary qPCR or MLPA assay may be performed along with classical sequencing to confirm the gross insertion/deletion.
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Affiliation(s)
- Y Lin
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - J Xu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - X Li
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - H Sheng
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - L Su
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - M Wu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - J Cheng
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - Y Huang
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - X Mao
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - Z Zhou
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - W Zhang
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - C Li
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - Y Cai
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - D Wu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - Z Lu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - X Yin
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China
| | - C Zeng
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China.
| | - L Liu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Rd., Guangzhou, 510623, China.
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9
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Cui R, Sun SQ, Zhong N, Xu MX, Cai HD, Zhang G, Qu S, Sheng H. The relationship between atherosclerosis and bone mineral density in patients with type 2 diabetes depends on vascular calcifications and sex. Osteoporos Int 2020; 31:1135-1143. [PMID: 32157326 DOI: 10.1007/s00198-020-05374-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/03/2020] [Indexed: 11/26/2022]
Abstract
UNLABELLED It is unknown whether a relationship exists between bone mineral density (BMD) and atherosclerosis with or without vascular calcification. In our study, a negative correlation between carotid atherosclerosis and BMD was found in female T2DM patients with vascular calcification, but not in those without calcification and males. INTRODUCTION Atherosclerosis is considered associated with low bone mineral density (BMD). However, most previous studies focus on patients with arterial atherosclerosis with vascular calcification. It is still unknown whether a relationship exists between atherosclerosis and BMD in patients without calcification. It is also unknown if sex plays a role in this relationship. METHODS We performed a retrospective cross-sectional study, which included 1459 type 2 diabetes mellitus (T2DM) patients (648 males ≥ 50 years old, and 811 postmenopausal females). They were assigned to three groups: group 1 (patients without carotid plaques and without carotid calcification), group 2 (patients with carotid plaques but without carotid calcification), and group 3 (patients with carotid plaques and with carotid calcification). Clinical characteristics and BMD were compared. The relationship between atherosclerosis and BMD was determined by binary logistic regression analysis. Statistical analysis was performed using SPSS 25.0. RESULTS Significant differences were only observed in women. The percentage of osteoporosis was higher in group 3 (43.64%) than in groups 1 (34.82%) and 2 (32.14%) (P = 0.016). Low BMD was found in the lumbar (P = 0.032), hip (P < 0.001), and femoral neck (P < 0.001). The odds ratio for osteoporosis increased significantly in a score-dependent manner in postmenopausal female patients with calcified atherosclerosis, but not in uncalcified patients. In men, no differences or relationships were identified. CONCLUSION A negative correlation between carotid atherosclerosis and BMD was found in female T2DM patients with vascular calcification, but not in those without calcification. A similar relationship was not observed in male patients with or without calcification. Thus, the relationship between atherosclerosis and bone mineral density in patients with type 2 diabetes depends on vascular calcifications and sex.
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Affiliation(s)
- R Cui
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - S Q Sun
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Nanjing Medical University, Nanjing, China
| | - N Zhong
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - M X Xu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - H D Cai
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - G Zhang
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong, China
| | - S Qu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - H Sheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Nanjing Medical University, Nanjing, China.
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10
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Sheng H, Cong DL, Ju HY. Functional Characterization of ZmHAK1 Promoter and Its Regulatory Transcription Factors in Maize. Mol Biol 2020. [DOI: 10.1134/s0026893320030152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Zhang J, Zhu Y, Wang Q, Kong Y, Sheng H, Guo J, Xu J, Dai B. Poliovirus receptor CD155 is up-regulated in muscle-invasive bladder cancer and predicts poor prognosis. Urol Oncol 2019; 38:41.e11-41.e18. [PMID: 31383549 DOI: 10.1016/j.urolonc.2019.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/06/2019] [Accepted: 07/11/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To investigate the expression pattern of CD155 and evaluate the prognostic value of CD155 in muscle-invasive bladder cancer (MIBC). PATIENTS AND METHODS Immunohistochemical staining of CD155 and survival analysis were conducted on 228 nonmetastatic MIBC patients underwent radical cystectomy in cohorts from Fudan University Shanghai Cancer Center and Zhongshan Hospital. Association of CD155 gene expression with tumor stage and survival were analyzed in TCGA and GSE13507 dataset. RESULTS CD155 was significantly up-regulated in MIBC compared to matched normal urothelium and majorly stained on the membrane of tumor cells. In Fudan MIBC cohort, CD155 high expression was significantly correlated with shorter recurrence-free survival (HR = 2.13, P < 0.001) and overall survival (HR = 2.49, P < 0.001). CD155 expression, T stage, and lymph node status were independent factors for predicting survival in multivariate analysis. In TCGA dataset, CD155 high expression was independently associated with shorter overall survival (HR = 1.74, P = 0.001) beyond age, T stage, and lymph node status. Further, explorative analysis in Fudan MIBC cohort showed that adjuvant chemotherapy was associated with longer recurrence-free survival and overall survival in stage III and IV disease with CD155-high tumors. CONCLUSIONS These findings suggest that CD155 is a robust prognostic factor and may help predict the benefit of adjuvant chemotherapy in MIBC.
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Affiliation(s)
- Junyu Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yu Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qifeng Wang
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yunyi Kong
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jianming Guo
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiejie Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.
| | - Bo Dai
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.
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12
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Li Y, Zhao J, Yu S, Wang Z, He X, Su Y, Guo T, Sheng H, Chen J, Zheng Q, Li Y, Guo W, Cai X, Shi G, Wu J, Wang L, Wang P, He X, Huang S. Extracellular Vesicles Long RNA Sequencing Reveals Abundant mRNA, circRNA, and lncRNA in Human Blood as Potential Biomarkers for Cancer Diagnosis. Clin Chem 2019; 65:798-808. [PMID: 30914410 DOI: 10.1373/clinchem.2018.301291] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 02/15/2019] [Indexed: 01/04/2023]
Abstract
BACKGROUND Extracellular vesicles (EVs) contain a rich cargo of different RNA species with specialized functions and clinical applications. However, the landscape and characteristics of extracellular vesicle long RNA (exLR) in human blood remain largely unknown. METHODS We presented an optimized strategy for exLR sequencing (exLR-seq) of human plasma. The sample cohort included 159 healthy individuals, 150 patients with cancer (5 cancer types), and 43 patients with other diseases. Bioinformatics approaches were used to analyze the distribution and features of exLRs. Support vector machine algorithm was performed to construct the diagnosis classifier, and diagnostic efficiency was evaluated by ROC analysis. RESULTS More than 10000 exLRs, including mRNA, circRNA, and lncRNA, were reliably detected in each exLR-seq sample from 1-2 mL of plasma. We observed that blood EVs contain a substantial fraction of intact mRNAs and a large number of assembling spliced junctions; circRNA was also enriched in blood EVs. Interestingly, blood exLRs reflected their tissue origins and the relative fractions of different immune cell types. Additionally, the exLR profile could distinguish patients with cancer from healthy individuals. We further showed that 8 exLRs can serve as biomarkers for hepatocellular carcinoma (HCC) diagnosis with high diagnostic efficiency in training [area under the curve (AUC) = 0.9527; 95% CI, 0.9170-0.9883], validation cohort (AUC = 0.9825; 95% CI, 0.9606-1), and testing cohort (AUC = 0.9627; 95% CI, 0.9263-0.9991). CONCLUSIONS In summary, this study revealed abundant exLRs in human plasma and identified diverse specific markers potentially useful for cancer diagnosis.
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Affiliation(s)
- Yuchen Li
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jingjing Zhao
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shulin Yu
- Department of Integrative Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhen Wang
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xigan He
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yonghui Su
- Department of Breast Surgery, Breast Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Tianan Guo
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jie Chen
- Department of Gastric Cancer and Soft Tissue Sarcomas, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qiupeng Zheng
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yan Li
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Weijie Guo
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xiaohong Cai
- Blood Transfusion Department, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jiong Wu
- Department of Breast Surgery, Breast Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Lu Wang
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Peng Wang
- Department of Integrative Oncology, Fudan University Shanghai Cancer Center, Shanghai, China;
| | - Xianghuo He
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China; .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shenglin Huang
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China; .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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13
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Shen H, Sheng H, Lu JJ, Feng C, Yao M, Pan H, Xu LS, Shen JF, Zheng Y, Zhou YL. [Expression and distribution of programmed death receptor 1 and T cell immunoglobulin mucin 3 in breast cancer microenvironment and its relationship with clinicopathological features]. Zhonghua Yi Xue Za Zhi 2019; 98:1352-1357. [PMID: 29764038 DOI: 10.3760/cma.j.issn.0376-2491.2018.17.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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 explore the expression and distribution of programmed death receptor 1 (PD-1) and T-cell immunoglobulin mucin 3 (TIM-3) in breast cancer microenvironment and analyze the their correlation with the clinicopathological features. Methods: The specimens of tumor tissue and adjacent tissues from 30 patients with infiltrative breast cancer who were diagnosed as breast cancer from June 2016 to May 2017 in The First Hospital of Jiaxing were collected, and the specimen were divided into two parts along the center. After embedding and cryosectioning, the expression and distribution of PD-1 and TIM-3 protein in tumor tissues were observed by immunofluorescence staining. Another part of the specimen was cut and digested, and non-continuous density gradient centrifugation was used to extract tumor-infiltrating lymphocytes (TILs), real-time quantitative PCR (qRT-PCR) was used to detect the mRNA expression of PD-1 and TIM-3 in TILs. Meanwhile, the protein expression was determined by Western blotting. The relationship between the expression of PD-1 and TIM-3 and pathological parameters of breast cancer was analyzed with correlation analysis. Results: Immunofluorescence results showed that more PD-1 and TIM-3 positive cells were observed in the tumor tissues compared with the tumor-adjacent tissues. The qRT-PCR showed that the expression of PD-1 and TIM-3 mRNA in TILs were both significantly higher than those in paracancerous tissues (3.09±0.38 vs 1.26±0.23, 3.42±0.31 vs 1.57±0.29, t=4.16, 4.37, both P<0.05). At the protein level, the expression of PD-1 and TIM-3 in tumor tissue lymphocytes(0.66±0.08, 0.80±0.11) was significantly higher than those in cancerous tissues(0.10±0.01, 0.26±0.02) (t=6.79, 4.57, both P<0.05). There were significant differences in the expression of PD-1, TIM-3 mRNA in the TILs between the different tumor histological grades, tumor sizes, lymph node metastasis (t=2.22-2.99, all P<0.05). Correlation analysis showed that there was a significant positive correlation between the expression of PD-1 and TIM-3 in tumor tissues (r=0.616, P<0.01). Conclusions: In the breast cancer microenvironment, PD-1, TIM-3-mediated signaling pathway plays an important role in the occurrence and development of breast cancer, it provides a new basis for the combination therapy of breast cancer.
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Affiliation(s)
- H Shen
- Central Laboratory, the First Hospital of Jiaxing, Jiaxing 314001, China
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14
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Lin G, Sheng H, Xie H, Zheng Q, Shen Y, Shi G, Ye D. circLPAR1 is a novel biomarker of prognosis for muscle-invasive bladder cancer with invasion and metastasis by miR-762. Oncol Lett 2019; 17:3537-3547. [PMID: 30867795 DOI: 10.3892/ol.2019.9970] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 02/01/2018] [Accepted: 11/29/2018] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) are a specific form of non-coding RNAs, that serve a pivotal role in the development of human diseases, including Alzheimer's disease and cancer; however, only a few are known with respect to cancer. The present study identified a novel circRNA, circ lysophosphatidic acid receptor 1 (LPAR1) (hsa_circ_0087960), derived from two exons 226 base pairs in length, in muscle-invasive bladder cancer (MIBC) tissues. circLPAR1 was identified to be lowly expressed in MIBC tissues in a cohort of 125 cases, and predicted a poor disease-specific survival time, compared with patients with high circLPAR1 expression (52.4 vs. 56.0 months; P=0.001) by univariate and multivariate Cox regression analyses. Matrigel and wound healing assays also demonstrated that the invasion of 5637 and T24 bladder cancer cells were significantly enhanced following the knockdown of circLPAR1 by small interfering RNA (si-circLPAR1-1 in T24 cell line, P=0.01; si-circLPAR1-2 in 5637 cell line, P=0.003; si-circLPAR1-2 in T24 cell line, P=0.002; si-circLPAR1-2 in 5637 cell line, P=0.006). The bioinformatics analysis indicated that circLPAR1 may harbor specific microRNAs (miRNAs) according to the miRNAs seed sequence matching. A luciferase reporter assay revealed that miR-762 can inhibit the activity of the transfected luciferase gene when inserted in a circLPAR1 wild-type fragment, and this inhibition could be alleviated when the luciferase gene was inserted in a circLPAR1 fragment with the mutated miR-762 target site. In conclusion, the circLPAR1 may function as a potential novel and stable biomarker for the prognosis of MIBC and may be associated with the invasion and metastasis by miR-762.
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Affiliation(s)
- Guowen Lin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Huyang Xie
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Qiupeng Zheng
- Institute of Biomedical Sciences, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Yijun Shen
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
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15
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Huang Y, Sheng H, Zhang J, Liu Q, Ye D, Shi G. Incorporating non-biological factors into the TNM staging system for better prognostication and decision-making in testicular cancer. World J Urol 2018; 37:2165-2173. [PMID: 30554272 DOI: 10.1007/s00345-018-2603-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 11/23/2018] [Accepted: 12/10/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND We combined county-level socioeconomic status (SES), marital status and insurance status to introduce NBF-stage, which were further incorporated into the American Joint Committee on Cancer (AJCC) TNM staging system to generate an integrated staging system for better prognostication and decision-making for testicular cancer patients. METHODS 15,324 eligible patients diagnosed with primary testicular cancer between January 1, 2007 and December 31, 2015 were strictly selected from the Surveillance, Epidemiology, and End Results (SEER) database. Independent survival predictors were determined based on Cox proportional hazards model. The Kaplan-Meier survival curves were conducted to describe the difference in predicting survival probability and the Multivariate Cox proportion hazard regression analyses were established to compare the cancer-specific survival (CSS) and overall survival (OS) difference among NBF stages or NBF-TNM subgroups. RESULTS County-level SES, marital status and insurance status were independent prognostic non-biological factors (NBFs) in our study (P < 0.05). NBF-stage (combination of SES, marital status, and insurance status) was also an independent survival predictor in TC (P < 0.05). NBF1 patients had 167% increased risk of cancer-specific mortality (CSM) as compared to NBF0 patients in testicular cancer (P < 0.01). And NBF0 patients all had a better CSS as compared to NBF1 patients of the same TNM stage both in seminoma and non-seminomatous germ cell tumor (P < 0.05). CONCLUSIONS Incorporation of NBFs into AJCC TNM staging system in testicular cancer would potentially impact treatment decisions where treatments would not be rendered for a typically curable cancer with multi-modal therapy.
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Affiliation(s)
- Yongqiang Huang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Junyu Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Qi Liu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.,Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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16
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Zeng Y, Zhang L, Zhu W, He H, Sheng H, Tian Q, Deng FY, Zhang LS, Hu HG, Deng HW. Network based subcellular proteomics in monocyte membrane revealed novel candidate genes involved in osteoporosis. Osteoporos Int 2017; 28:3033-3042. [PMID: 28741036 PMCID: PMC5812280 DOI: 10.1007/s00198-017-4146-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/04/2017] [Indexed: 01/18/2023]
Abstract
UNLABELLED In this study, label-free-based quantitative subcellular proteomics integrated with network analysis highlighted several candidate genes including P4HB, ITGB1, CD36, and ACTN1 that may be involved in osteoporosis. All of them are predicted as significant membrane proteins with high confidence and enriched in bone-related biological process. The results were further verified in transcriptomic and genomic levels. INTRODUCTION Osteoporosis is a metabolic bone disease mainly characterized by low bone mineral density (BMD). As the precursors of osteoclasts, peripheral blood monocytes (PBMs) are supported to be important candidates for identifying genes related to osteoporosis. We performed subcellular proteomics study to identify significant membrane proteins that involved in osteoporosis. METHODS To investigate the association between monocytes, membrane proteins, and osteoporosis, we performed label-free quantitative subcellular proteomics in 59 male subjects with discordant BMD levels, with 30 high vs. 29 low BMD subjects. Subsequently, we performed integrated gene enrichment analysis, functional annotation, and pathway and network analysis based on multiple bioinformatics tools. RESULTS A total of 1070 membrane proteins were identified and quantified. By comparing the proteins' expression level, we found 36 proteins that were differentially expressed between high and low BMD groups. Protein localization prediction supported the notion that the differentially expressed proteins, P4HB (p = 0.0021), CD36 (p = 0.0104), ACTN1 (p = 0.0381), and ITGB1 (p = 0.0385), are significant membrane proteins. Functional annotation and pathway and network analysis highlighted that P4HB, ITGB1, CD36, and ACTN1 are enriched in osteoporosis-related pathways and terms including "ECM-receptor interaction," "calcium ion binding," "leukocyte transendothelial migration," and "reduction of cytosolic calcium levels." Results from transcriptomic and genomic levels provided additional supporting evidences. CONCLUSION Our study strongly supports the significance of the genes P4HB, ITGB1, CD36, and ACTN1 to the etiology of osteoporosis risk.
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Affiliation(s)
- Y Zeng
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - L Zhang
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - W Zhu
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China
| | - H He
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - H Sheng
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - Q Tian
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - F-Y Deng
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
- Laboratory of Proteins and Proteomics, Department of Epidemiology, Soochow University School of Public Health, Suzhou, Jiangsu, 205123, China
| | - L-S Zhang
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
| | - H-G Hu
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
| | - H-W Deng
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China.
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA.
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Zhang S, Huang G, Yuan K, Zhu Q, Sheng H, Yu R, Luo G, Xu A. Tanshinone IIA ameliorates chronic arthritis in mice by modulating neutrophil activities. Clin Exp Immunol 2017; 190:29-39. [PMID: 28542869 DOI: 10.1111/cei.12993] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2017] [Indexed: 01/13/2023] Open
Abstract
Rheumatoid arthritis (RA) is a chronic immune inflammatory disease mediated by the influx of immune cells into the synovial joint space. As Tanshinone IIA (TIIA) has potent anti-oxidant and anti-inflammatory activities, we used the adjuvant-induced arthritis (AA) murine model of RA to investigate the impact of TIIA on RA and immune cell activation. The anti-arthritic activity of TIIA was investigated in an adjuvant-induced arthritis model of RA in mice. Myeloperoxidase and neutrophil elastase expression levels were assessed in ankle joints by immunohistochemistry analysis. Immune cell infiltration was evaluated in air pouch experiments. Proinflammatory cytokines expression levels were determined by quantitative real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assays. Neutrophil extracellular traps (NETs) were assessed by immunostaining and confocal microscopy. Treatment with TIIA alleviated cartilage erosion and neutrophil infiltration in the ankle joints of AA mice and reduced proinflammatory cytokine expression levels in sera. TIIA suppressed interleukin-6 and tumour necrosis factor-α expression and release in neutrophils and promoted neutrophil apoptosis. TIIA also inhibited the NET formation of neutrophils. Our findings demonstrated that TIIA can ameliorate RA effectively by targeting neutrophils, indicating that TIIA may act as a potential therapeutic for RA.
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Affiliation(s)
- S Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - G Huang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - K Yuan
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Q Zhu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - H Sheng
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - R Yu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - G Luo
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - A Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.,State Key Laboratory of Biocontrol, Department of Biochemistry, School of Life Sciences, Sun Yat-Sen (Zhongshan) University, Guangzhou, Guangdong, China
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Liu G, Shi G, Sheng H, Jiang Y, Liang H, Liu S. Doubly Caged Linker for AND-Type Fluorogenic Construction of Protein/Antibody Bioconjugates and In Situ Quantification. Angew Chem Int Ed Engl 2017; 56:8686-8691. [PMID: 28524357 DOI: 10.1002/anie.201702748] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 03/16/2017] [Indexed: 12/15/2022]
Abstract
In situ quantification of the conjugation efficiency of azide-terminated synthetic polymers/imaging probes and thiol-functionalized antibodies/proteins/peptides was enabled by a doubly caged profluorescent and heterodifunctional core molecule C1 as a self-sorting bridging unit. Orthogonal dual "click" coupling of C1 with azide- and thiol-functionalized precursors led to highly fluorescent bioconjugates, whereas single-click products remained essentially nonfluorescent. Integration with FRET processes was also possible. For the construction of antibody-probe conjugates from an anti-carcinoembryonic antigen and a quinone-caged profluorescent naphthalimide derivative, the dual "click" coupling process with C1 was monitored on the basis of the emission turn-on of C1, whereas prominent changes in FRET ratios occurred for antibody-imaging-probe conjugates when specifically triggered by quinone oxidoreductase (NQO1), which is overexpressed in various types of cancer cells.
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Affiliation(s)
- Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, 270 Dong'An Road, Shanghai, 200032, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, 270 Dong'An Road, Shanghai, 200032, China
| | - Yanyan Jiang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Haojun Liang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui Province, 230026, China
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Wu J, Wan F, Sheng H, Shi G, Shen Y, Lin G, Dai B, Zhu Y, Ye D. NR1H3 Expression is a Prognostic Factor of Overall Survival for Patients with Muscle-Invasive Bladder Cancer. J Cancer 2017; 8:852-860. [PMID: 28382148 PMCID: PMC5381174 DOI: 10.7150/jca.17845] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 10/08/2016] [Accepted: 12/22/2016] [Indexed: 12/21/2022] Open
Abstract
Background: Nuclear receptors (NRs) are a class of transcription factors that regulate many cellular functions through manipulation of gene expression and also play important roles in tumorigenesis, proliferation, progression and prognosis in various kinds of cancers according to recent studies. This work aimed to determine the predictive ability of NRs in muscle-invasive bladder cancer (MIBC). Patients and methods: A total of 308 MIBC patients with complete clinicopathological and RNASeq data from The Cancer Genome Atlas (TCGA) cohort were collected for filtration. Genes showed clear correlations with overall survival (OS) and recurrence free survival (RFS) were further validated in 123 MIBC patients recruited consecutively from 2008 to 2012 in Fudan University Shanghai Cancer Center (FUSCC) cohort. Cox proportional hazards regression model and Kaplan-Meier plot were used to assess the relative factors. Results: In TCGA cohort, we found that high NR1H3 (HR=0.779, 95% CI: 0.634 - 0.957), NR2C1 (HR=0.673, 95% CI: 0.458 - 0.989) and NR2F6 (HR=0.750, 95% CI: 0.574 - 0.980) expressions were independent factors of favorable OS, while only low NR1H3 (log-rank test, P=0.0076) and NR2F6 (log-rank test, P=0.0395) expressions had the ability to predict poor prognosis for RFS. Further, in FUSCC validating cohort, we confirmed that low NR1H3 expression level was independent factor of poor OS (HR=1.295, 95% CI: 1.064 - 1.576) and it had the ability to predict poor RFS (log-rank test, P=0.0059). Conclusions: Low NR1H3 expression level is an independent prognostic factor of poor OS, and can also predict worse RFS in MIBC patients. Our “TCGA filtrating and local database validating” model can help reveal more prognostic biomarkers and cast a new light in understanding certain gene function in MIBC.
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Affiliation(s)
- Junlong Wu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fangning Wan
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yijun Shen
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guowen Lin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bo Dai
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiping Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Su L, Cheng J, Yin X, Liu G, Lu Z, Sheng H, Cai Y, Shi Q, Liu L. Clinical and molecular characteristics in 15 patients with androgen receptor gene mutations from South China. Andrologia 2017; 49. [DOI: 10.1111/and.12763] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2016] [Indexed: 11/27/2022] Open
Affiliation(s)
- L. Su
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - J. Cheng
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - X. Yin
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - G. Liu
- Department of Pediatric Urology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - Z. Lu
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - H. Sheng
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - Y. Cai
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - Q. Shi
- Department of Pathology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
| | - L. Liu
- Department of Genetics and Endocrinology; Guangzhou Women and Children's Medical Center; Guangzhou Medical University; Guangzhou Guangdong China
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Cheng X, Sheng H, Ma R, Gao Z, Han Z, Chi F, Cong N, Wang J, Liu X, Luo X, Yu J, Ra Y. Allergic rhinitis and allergy are risk factors for otitis media with effusion: A meta-analysis. Allergol Immunopathol (Madr) 2017; 45:25-32. [PMID: 27720440 DOI: 10.1016/j.aller.2016.03.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/06/2016] [Accepted: 03/10/2016] [Indexed: 01/08/2023]
Abstract
OBJECTIVE/HYPOTHESIS We systematically reviewed the associations between allergic rhinitis or allergy and otitis media with effusion, by reference to published data. STUDY DESIGN A meta-analysis of case-controlled studies. DATA SOURCE Five databases (Pubmed, Highwire, Medline, Wanfang, and China National Knowledge Infrastructure) were searched for relevant studies in the English language published prior to November 12, 2015. STUDIES CHOSEN Studies with clearly defined experimental and control groups, in which the experimental groups had otitis media with effusion together with allergic rhinitis or allergy, were selected. METHODS We performed a meta-analysis on data from the identified cross-sectional and case-controlled studies using fixed- or random-effects models (depending on heterogeneity). We used Reviewer Manager 5.3 software to this end. RESULTS Seven studies met the inclusion criteria. The prevalence of allergic rhinitis in patients with otitis media with effusion and the control groups differed significantly in three studies (P<0.00001), as did the prevalence of allergy (in six studies; P=0.003). CONCLUSION Allergic rhinitis and allergy appear to be risk factors for otitis media with effusion.
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Affiliation(s)
- X Cheng
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China; Fudan University, Shanghai, China
| | - H Sheng
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China; Fudan University, Shanghai, China
| | - R Ma
- Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - Z Gao
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - Z Han
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China; Fudan University, Shanghai, China.
| | - F Chi
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China; Fudan University, Shanghai, China.
| | - N Cong
- Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - J Wang
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China; Fudan University, Shanghai, China
| | - X Liu
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - X Luo
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - J Yu
- Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China; Shanghai Auditory Medical Center, Shanghai, China; Key Laboratory of Hearing Science, Ministry of Health, Shanghai, China
| | - Y Ra
- Fudan University, Shanghai, China; Department of ENT-Head and Neck Surgery, Hospital of Pyong Yang Medical University, Pyong Yang, Democratic People's Republic of Korea
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Tan M, Huang Y, Jiang X, Li P, Tang C, Jia X, Chen Q, Chen W, Sheng H, Feng Y, Wu D, Liu L. The Prevalence, Clinical, and Molecular Characteristics of Congenital Hypothyroidism Caused by DUOX2 Mutations: A Population-Based Cohort Study in Guangzhou. Horm Metab Res 2016; 48:581-8. [PMID: 27557340 DOI: 10.1055/s-0042-112224] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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] [Indexed: 10/21/2022]
Abstract
Thyroid dyshormonogenesis (DH) has recently been reported to be more frequently associated with mutations in the dual oxidase 2 (DUOX2) gene. The present study was aimed to investigate the prevalence, clinical, and molecular characteristics of congenital hypothyroidism (CH) caused by DUOX2 mutations in Guangzhou. A population-based cohort of 156 patients with CH was recruited based on neonatal screening among 433 578 newborns born in Guangzhou from 2011 to 2012. Genetic analysis of DUOX2 was performed in 96 patients with suspected thyroid dyshormonogenesis (SDH) by PCR-amplified direct sequencing. Apart from 2 cases without ultrasonographic data, 118 (76.6%) of the 156 patients were classified as SDH and 36 (23.4%) as thyroid dysgenesis (TD) according to thyroid ultrasound at diagnosis. Genetic analysis revealed 23 different variants in 60 unrelated individuals (60/96, 62.5%), including 13 novel variants that were absent from HGMD, dbSNP databases, and the 50 normal controls. The novel missense variants were predicted to be pathogenic by SIFT and PolyPhen-2. The p.K530X was the most common mutation. Ninety-three percent of mutant alleles occurred in exons 5, 6, 9, 14, 17, 20, 25, 27, and 28. There were no significant differences in phenotypes between biallelic and monoallelic variants cases or between with-DUOX2 and non-DUOX2 variants cases. Most patients with DUOX2 defects (78.2%) were transient CH. In conclusion, the prevalence of DUOX2 pathogenic variants was high (62.5%) in this cohort. Thirteen novel probably pathologic variants were reported. The p.K530X was the most common mutation in the Chinese population. There was no correlation between DUOX2 genotypes and clinical phenotypes.
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Affiliation(s)
- M Tan
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - Y Huang
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - X Jiang
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - P Li
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - C Tang
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - X Jia
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - Q Chen
- Department of Guangzhou Neonatal Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - W Chen
- Department of Ultrasound, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Renminzhong Road, Guangzhou, China
| | - H Sheng
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Jinsui Road, Guangzhou, China
| | - Y Feng
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Jinsui Road, Guangzhou, China
| | - D Wu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Jinsui Road, Guangzhou, China
| | - L Liu
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Jinsui Road, Guangzhou, China
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Zhong N, Xu B, Cui R, Xu M, Su J, Zhang Z, Liu Y, Li L, Sheng C, Sheng H, Qu S. Positive Correlation between Serum Osteocalcin and Testosterone in Male Hyperthyroidism Patients with High Bone Turnover. Exp Clin Endocrinol Diabetes 2016; 124:452-6. [PMID: 27219888 DOI: 10.1055/s-0042-107944] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- N. Zhong
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - B. Xu
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - R. Cui
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - M. Xu
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - J. Su
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - Z. Zhang
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - Y. Liu
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - L. Li
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - C. Sheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - H. Sheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
| | - S. Qu
- Department of Endocrinology and Metabolism, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, China
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Chi F, Wen J, Xiong J, Sheng H, Gong Z, Qiu T, Wei G, Yi F, Wang X. Controllable polymerization of poly-DVB–VBC–g–AO resin via surface-initiated atom transfer radical polymerization for uranium removal. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4652-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang JJ, Zhou JJ, Yuan XL, Li CY, Sheng H, Su B, Sheng CJ, Qu S, Li H. Hyperthyroidism caused by acquired immune deficiency syndrome. Eur Rev Med Pharmacol Sci 2014; 18:875-879. [PMID: 24706313] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Acquired immune deficiency syndrome (AIDS) is an immune deficiency disease. The etiology of hyperthyroidism, which can also be immune-related, is usually divided into six classical categories, including hypophyseal, hypothalamic, thyroid, neoplastic, autoimmune and inflammatory hyperthyroidism. Hyperthyroidism is a rare complication of highly active antimicrobial therapy (HAART) for human immunodeficiency virus (HIV). Hyperthyroidism caused directly by AIDS has not been previously reported. PATIENT FINDINGS A 29-year-old man who complained of dyspnea and asthenia for 1 month, recurrent fever for more than 20 days, and breathlessness for 1 week was admitted to our hospital. The thyroid function test showed that the level of free thyroxine (FT4) was higher than normal and that the level of thyroid-stimulating hormone (TSH) was below normal. He was diagnosed with hyperthyroidism. Additional investigations revealed a low serum albumin level and chest infection, along with diffuse lung fibrosis. Within 1 month, he experienced significant weight loss, no hand tremors, intolerance of heat, and perspiration proneness. We recommended an HIV examination; subsequently, AIDS was diagnosed based on the laboratory parameters. SUMMARY This is the first reported case of hyperthyroidism caused by AIDS. CONCLUSIONS AIDS may cause hyperthyroidism by immunization regulation with complex, atypical, and easily ignored symptoms. Although hyperthyroidism is rare in patients with AIDS, clinicians should be aware of this potential interaction and should carefully monitor thyroid function in HIV-positive patients.
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Affiliation(s)
- J-J Wang
- Department of Endocrinology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China.
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Zhang Z, Liu Y, Song T, Xue Z, Shen X, Liang F, Zhao Y, Li Z, Sheng H. An antiapoptotic Bcl-2 family protein index predicts the response of leukaemic cells to the pan-Bcl-2 inhibitor S1. Br J Cancer 2013; 108:1870-8. [PMID: 23558901 PMCID: PMC3658527 DOI: 10.1038/bjc.2013.152] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Bcl-2-like members have been found to be inherently overexpressed in many types of haematologic malignancies. The small-molecule S1 is a BH3 mimetic and a triple inhibitor of Bcl-2, Mcl-1 and Bcl-XL. METHODS The lethal dose 50 (LD(50)) values of S1 in five leukaemic cell lines and 41 newly diagnosed leukaemia samples were tested. The levels of Bcl-2 family members and phosphorylated Bcl-2 were semiquantitatively measured by western blotting. The interactions between Bcl-2 family members were tested by co-immunoprecipitation. The correlation between the LD(50) and expression levels of Bcl-2 family members, alone or in combination, was analysed. RESULTS S1 exhibited variable sensitivity with LD(50) values ranging >2 logs in both established and primary leukaemic cells. The ratio of pBcl-2/(Bcl-2+Mcl-1) could predict the S1 response. Furthermore, we demonstrated that pBcl-2 antagonised S1 by sequestering the Bak and Bim proteins that were released from Mcl-1, andpBcl-2/Bak, pBcl-2/Bax and pBcl-2/Bim complexes cannot be disrupted by S1. CONCLUSION A predictive index was obtained for the novel BH3 mimetic S1. The shift of proapoptotic proteins from being complexed with Mcl-1 to being complexed with pBcl-2 was revealed for the first time, which is the mechanism underlying the index value described herein.
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Affiliation(s)
- Z Zhang
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China.
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Abstract
Eyespot, caused by Oculimacula yallundae and O. acuformis, is an economically important disease of wheat. Currently, two eyespot resistance genes, Pch1 and Pch2, are used in wheat breeding programs but neither provides complete control or prevents yield loss. Aegilops longissima is a distant relative of wheat and proven donor of genes useful for wheat improvement, including disease resistance. Forty A. longissima accessions and 83 A. longissima chromosome addition or substitution lines were evaluated for resistance to eyespot. Among the 40 accessions tested, 43% were resistant to O. yallundae, 48% were resistant to O. acuformis, and 33% were resistant to both. Addition or substitution lines containing chromosomes 1S1, 2S1, 5S1, and 7S1, and a 4S17S1 translocation were resistant to O. yallundae. Chromosomes 1S1, 2S1, 4S1, and 5S1 contributed to resistance to O. acuformis more than others. Chromosomes 1S1, 2S1, 5S1, and 7S1 provided resistance to both pathogens. This is the first report of eyespot resistance in A. longissima. These results provide evidence that genetic control of eyespot resistance is present on multiple chromosomes of the S1 genome. This research demonstrates that A. longissima is a potential new source of eyespot resistance genes that could broaden the genetic diversity for wheat improvement.
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Affiliation(s)
- H Sheng
- Department of Plant Pathology, Washington State University, Pullman 99164-6430
| | - T D Murray
- Department of Plant Pathology, Washington State University, Pullman 99164-6430
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Wang SY, Duan KM, Li Y, Mei Y, Sheng H, Liu H, Mei X, Ouyang W, Zhou HH, Liu ZQ. Effect of quercetin on P-glycoprotein transport ability in Chinese healthy subjects. Eur J Clin Nutr 2013; 67:390-4. [DOI: 10.1038/ejcn.2013.5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Kennedy D, Robergs R, Zuhl M, Beam J, Salgado R, Sheng H, Sierra G, Majumdar A. Differences in power production and fatigue during two types of Wingate tests. J Sci Med Sport 2011. [DOI: 10.1016/j.jsams.2011.11.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhang Q, Chen SG, Sheng CJ, Cheng XY, Li H, Sheng H, Yang P, Qian CH, Li WJ, Qu S. Insulin autoimmune syndrome: a case associated with HLA-DRB1 polymorphism. J Endocrinol Invest 2011; 34:568-9. [PMID: 21897108 DOI: 10.1007/bf03345394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Apoptosis has a vital role in maintaining tissue homeostasis, and dysregulation of the apoptotic pathway is now widely recognized as a key step in tumourigenesis. Increasingly, evidence has demonstrated that microRNA (miRNA) can exert various biological functions in tumours by targeting oncogenes or tumour suppressors. Nevertheless, the role of miRNA in apoptosis remains unclear. Here we show that ectopical expression of miR-148a can induce apoptosis in colorectal cancer cells. In addition, MYB can inhibit miR-148a by directly acting on the transcription factor binding site in miR-148a gene and miR-148a can posttranscriptionally silence Bcl-2. Subsequently, the intrinsic apoptosis pathway is activated by releasing cytochrome c, cleaving caspase 9, caspase 3 and PARP, which eventually induce cancer-cell apoptosis. These findings are part of a hitherto undocumented apoptotic regulatory pathway in which a pleiotropic transcription factor controls the expression of a miRNA and the miRNA inhibits the target, leading to activation of an intrinsic mitochondrial pathway and tumour apoptosis.
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Affiliation(s)
- H Zhang
- Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, PR China
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Abstract
The purpose of this study was to investigate ocular complications among a group of patients on long-term, high-dose immunosuppression and corticosteroids for the maintenance of orthotopic heart transplants. Additionally, we provided information pertinent for the early diagnosis and treatment of eye diseases. In this study, we retrospectively assessed the clinical data of 138 patients with orthotopic heart transplantations from May 2000 to October 2005, including assessment of ophthalmic symptoms and signs, as well as the general condition, treatment, and prognosis. Of 138 transplant recipients examined (276 eyes), 47 eyes (17.0%) showed ocular surface diseases. Sixty-four (23.2%) had a posterior subcapsular cataract, and 16 (5.8%) corticosteroid glaucoma. Fifteen (5.6%) had ocular fundus diseases. Various ocular complications related to immunosuppression and corticosteroids appear among heart transplant patients. Cardiac surgeons and ophthalmologists must closely evaluate ocular symptoms in the posttransplantation period.
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Affiliation(s)
- H Sheng
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, China
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Qin L, Zhang G, Sheng H, Wang XL, Wang YX, Yeung KW, Griffith JF, Li ZR, Leung KS, Yao XS. Phytoestrogenic compounds for prevention of steroid-associated osteonecrosis. J Musculoskelet Neuronal Interact 2008; 8:18-21. [PMID: 18398255] [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: 05/26/2023]
Affiliation(s)
- L Qin
- Musculoskeletal Research Lab, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China.
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Zhang G, Qin L, Sheng H, Yeung K, Yeung H, Cheung W, Griffith J, Chan C, Lee K, Leung K. Epimedium-derived phytoestrogen exert beneficial effect on preventing steroid-associated osteonecrosis in rabbits with inhibition of both thrombosis and lipid-deposition. Bone 2007; 40:685-92. [PMID: 17188589 PMCID: PMC7185875 DOI: 10.1016/j.bone.2006.10.026] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2006] [Revised: 10/14/2006] [Accepted: 10/25/2006] [Indexed: 11/25/2022]
Abstract
OBJECTIVES This study tested the effect of Epimedium-derived phytoestrogen (PE) on preventing steroid-associated osteonecrosis (ON) in rabbit model. METHODS Thirty 28-week-old male New-Zealand white rabbits were divided into control group (CON; n=14) and PE group (PE; n=16; 5 mg/kg body weight/day) after receiving an established inductive protocol for inducing steroid-associated ON. Before and after inductive protocol, Dynamic-MRI was employed on bilateral femora for local intra-osseous perfusion, blood samples were examined for coagulation, fibrinolysis and lipid-transportation, and marrow samples were quantified for adipogenesis-gene mRNA expression. Six weeks later, bilateral femora were dissected for Micro-CT-based micro-angiography, and then ON lesion, intravascular thrombosis and extravascular fat-cell-size were examined histopathologically. RESULTS The incidence of ON in the PE group (31%) was significantly lower than that in the CON group (93%). Compared to the CON group, local intra-osseous perfusion was maintained in the PE group. Blocked trunk vessels were seldom found in micro-angiography of the PE-treated rabbits. Thrombosis incidence and fat-cell-size were both significantly lower in the PE group than those in the CON group. During the early period after induction, indicator of coagulation, fibrinolysis, lipid-transportation and adipogenesis-gene expression were found with significantly changing pattern in the PE group compared to the CON group. CONCLUSION PE was able to exert beneficial effect on preventing steroid-associated ON in rabbits with inhibition of both thrombosis and lipid deposition.
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Affiliation(s)
- G. Zhang
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - L. Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - H. Sheng
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - K.W. Yeung
- Department of Organ and Imaging, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - H.Y. Yeung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - W.H. Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - J. Griffith
- Department of Organ and Imaging, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - C.W. Chan
- Lee Hysan Clinical Laboratory, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - K.M. Lee
- Lee Hysan Clinical Laboratory, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - K.S. Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
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Bing P, Maode L, Li F, Sheng H. Expression of Renal Transforming Growth Factor-β and Its Receptors in a Rat Model of Chronic Cyclosporine-Induced Nephropathy. Transplant Proc 2006; 38:2176-9. [PMID: 16980035 DOI: 10.1016/j.transproceed.2006.07.015] [Citation(s) in RCA: 9] [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: 10/24/2022]
Abstract
OBJECTIVE We sought to detect expression of transforming growth factor-beta 1 (TGF-beta1) as well as its receptors type I (TRI) and type II (TRII) in rat kidneys during chronic cyclosporine (CsA)-induced nephropathy. METHODS Twenty four rats were randomly divided into three experimental groups: group 1; NSD (control, n = 8) were administered a normal sodium diet, group 2; LSD (n = 8) were administered a low sodium diet, group 3; CsA (n = 8) were sodium-depleted rats administered Neoral by gastric gavage in a model of chronic CsA-induced nephropathy. TGF-beta1, TRI, and TRII proteins, as well as TRI and TRII mRNAs were measured in the CsA-treated rat kidneys by immunohistochemistry and in situ hybridization, respectively. Semiquantitative results were shown by image analysis. RESULTS The expression of TGF-beta1, TRI, TRII, TRI mRNA, and TRII mRNA were all increased in CsA-treated rat kidneys, compared with NSD or LSD (P < .05). CONCLUSION Our study showed that the ligand of TGF-beta1 and its receptors TRI, TRII were all up-regulated. It may be important to inhibit the expression of TGF-beta1 or its receptors in patients who suffer from chronic CsA-induced nephropathy.
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Affiliation(s)
- P Bing
- Surgery Department, West China Hospital, SiChuan University, Guoxuexiang 37, Chengdu 610041, P.R. China.
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Bing P, Maode L, Li F, Sheng H. Comparison of Expression of TGF-β1, its Receptors TGFβ1R-I and TGFβ1R-II in Rat Kidneys During Chronic Nephropathy Induced by Cyclosporine and Tacrolimus. Transplant Proc 2006; 38:2180-2. [PMID: 16980036 DOI: 10.1016/j.transproceed.2006.06.102] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/25/2022]
Abstract
OBJECTIVE Chronic rejection is a major cause of graft dysfunction after kidney transplantation. Long-term treatment with cyclosporine (CsA) or tacrolimus (FK506) results in chronic nephrotoxicity. Transforming growth factor-beta1 (TGFbeta1) and its receptors type I (TR-I) and type II (TR-II) have been known to contribute to this side effect. The expression of TGF-beta1, TR-I, and TR-II in rat kidneys has not been compared during chronic nephropathy induced by CsA or FK506. METHODS Rat models of chronic CsA- or FK506-induced nephropathy were established using Sandimun Neoral or Prograf administration. The kidneys were dissected and TGF-beta1, TR-I, and TR-II proteins and TR-I and TR-II mRNAs measured by immunohistochemistry and in situ hybridization, respectively, to compare the results of the two groups. RESULTS The functional and morphologic studies showed that in the rats the nephrotoxic effects of FK506 were not as significant as those of CsA. The results of immunohistochemistry and in situ hybridization showed that the expression of renal TGFbeta1, TR I, TR-II proteins and TR and TR II mRNA in the FK506 group were lower than those in the CsA groups. CONCLUSION These results showed that both FK506 and CSA display nephrotoxicity, but that the nephrotoxicity of FK506 was less than that of CsA in chronic nephropathy.
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Affiliation(s)
- P Bing
- Department of Surgery, West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu 610041, P.R. China.
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Milchberg HM, Kim KY, Kumarappan V, Layer BD, Sheng H. Clustered gases as a medium for efficient plasma waveguide generation. Philos Trans A Math Phys Eng Sci 2006; 364:647-61. [PMID: 16483955 DOI: 10.1098/rsta.2005.1729] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Clustered gas jets are shown to be an efficient means for plasma waveguide generation, for both femtosecond and picosecond generation pulses. These waveguides enable significantly lower on-axis plasma density (less than 10(18) cm(-3)) than in conventional hydrodynamic plasma waveguides generated in unclustered gases. Using femtosecond pump pulses, self-guided propagation and strong absorption (more than 70%) are used to produce long centimetre scale channels in an argon cluster jet, and a subsequent intense pulse is coupled into the guide with 50% efficiency and guided at above 10(17)W cm(-2) intensity over 40 Rayleigh lengths. We also demonstrate efficient generation of waveguides using 100 ps axicon-generated Bessel-beam pump pulses. Despite the expected sub-picosecond cluster disassembly time, we observe long pulse absorption efficiencies up to a maximum of 35%. Simulations show that in the far leading edge of the long laser pulse, the volume of heated clusters evolves to a locally uniform and cool plasma already near ionization saturation, which is then efficiently heated by the remainder of the pulse.
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Affiliation(s)
- H M Milchberg
- University of Maryland Institute for Physical Science and Technology College Park, MD 20742, USA
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Zeng H, Liang X, Yao S, Ren Z, Neilsen HI, Sheng H, Jiao Z, Shu Y, Zhuang G. EL-008 Luteinizing hormone and insulin promoting granulosa cells differentiation in women with polycystic ovary syndrome. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60533-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Jung C, Kim RS, Zhang H, Lee SJ, Sheng H, Loehrer PJ, Gardner TA, Jeng MH, Kao C. HOXB13 is downregulated in colorectal cancer to confer TCF4-mediated transactivation. Br J Cancer 2005; 92:2233-9. [PMID: 15928669 PMCID: PMC2361828 DOI: 10.1038/sj.bjc.6602631] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [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] [Indexed: 01/09/2023] Open
Abstract
Mutations in the Wnt signalling cascade are believed to cause aberrant proliferation of colorectal cells through T-cell factor-4 (TCF4) and its downstream growth-modulating factors. HOXB13 is exclusively expressed in prostate and colorectum. In prostate cancers, HOXB13 negatively regulates β-catenin/TCF4-mediated transactivation and subsequently inhibits cell growth. To study the role of HOXB13 in colorectal tumorigenesis, we evaluated the expression of HOXB13 in 53 colorectal tumours originated from the distal left colon to rectum with their matching normal tissues using quantitative RT–PCR analysis. Expression of HOXB13 is either lost or diminished in 26 out of 42 valid tumours (62%), while expression of TCF4 RNA is not correlated with HOXB13 expression. TCF4 promoter analysis showed that HOXB13 does not regulate TCF4 at the transcriptional level. However, HOXB13 downregulated the expression of TCF4 and its target gene, c-myc, at the protein level and consequently inhibited β-catenin/TCF-mediated signalling. Functionally, forced expression of HOXB13 drove colorectal cancer (CRC) cells into growth suppression. This is the first description of the downregulation of HOXB13 in CRC and its mechanism of action is mediated through the regulation of TCF4 protein stability. Our results suggest that loss of HOXB13 may be an important event for colorectal cell transformation, considering that over 90% of colorectal tumours retain mutations in the APC/β-catenin pathway.
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Affiliation(s)
- C Jung
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
| | - R-S Kim
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
| | - H Zhang
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
| | - S-J Lee
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
| | - H Sheng
- Department of Surgery, Indiana University, Indianapolis, IN 46202, USA
| | - P J Loehrer
- Department of Medicine, Indiana University, Indianapolis, IN 46202, USA
| | - T A Gardner
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
- Department of Microbiology and Immunology, Indiana University, Indianapolis, IN 46202, USA
| | - M-H Jeng
- Department of Medicine, Indiana University, Indianapolis, IN 46202, USA
- Department of Microbiology and Immunology, Indiana University, Indianapolis, IN 46202, USA
| | - C Kao
- Department of Urology, Indiana University, Indianapolis, IN 46202, USA
- Department of Microbiology and Immunology, Indiana University, Indianapolis, IN 46202, USA
- 1001 West 10th Street, OPW320, Indianapolis, IN 46202, USA. E-mail:
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Sheng H, Kim KY, Kumarappan V, Layer BD, Milchberg HM. Plasma waveguides efficiently generated by Bessel beams in elongated cluster gas jets. Phys Rev E Stat Nonlin Soft Matter Phys 2005; 72:036411. [PMID: 16241583 DOI: 10.1103/physreve.72.036411] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Indexed: 05/05/2023]
Abstract
We demonstrate the efficient generation of plasma waveguides in elongated cluster gas jets using 100 ps axicon-generated Bessel beam pump pulses. The plasma waveguide space and time evolution is measured using picosecond interferometry. Small radius waveguides with central densities as low as approximately 10(18) cm(-3) can be generated with this technique. Despite the expected subpicosecond cluster disassembly time, we observe long pulse absorption efficiencies that can be more than a factor of 10 greater than in unclustered gas targets of the same volume average atomic density. The maximum long pulse absorption observed in cluster jets under our range of conditions was 35%. The explanation for the enhanced absorption is that in the far-leading edge of the laser pulse, the volume of heated clusters evolves to a locally uniform and cool plasma already near ionization saturation, which is then heated by the remainder of the pulse. From this perspective, the use of clustered gases is equivalent to a supercharged preionization scheme for long duration laser pulses.
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Affiliation(s)
- H Sheng
- Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742, USA
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Abstract
BACKGROUND AND AIMS Determination of intracellular signalling pathways that mediate intestinal epithelial proliferation is fundamental to the understanding of the integrity and function of the intestinal tract under normal and diseased conditions. The phosphoinositide 3-kinase (PI3K)/Akt pathway transduces signals initiated by growth factors and is involved in cell proliferation and differentiation. In this study, we assessed the role of PI3K/Akt in transduction of proliferative signals in intestinal epithelial cells. METHODS A rat intestinal epithelial (RIE) cell line and human colorectal cancer HCA-7 and LS-174 cell lines served as in vitro models. The Balb/cJ mouse was the in vivo model. RESULTS PI3K activation was critical for G1 cell cycle progression of intestinal epithelial cells. Ectopic expression of either active p110alpha or Akt-1 increased RIE cell proliferation. In vivo experiments demonstrated that PI3K activation was closely associated with the proliferative activity of intestinal mucosa. Treatment of mice with PI3K inhibitors blocked induction of PI3K activity and attenuated intestinal mucosal proliferation associated with oral intake. Epidermal growth factor and transforming growth factor alpha stimulated PI3K activation which was required for growth factor induced expression of cyclin D1. CONCLUSIONS The PI3K/Akt pathway transduces mitogenic signals from growth factor receptors to the cell cycle machinery and plays a critical role in regulation of intestinal epithelial proliferation.
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Affiliation(s)
- H Sheng
- Department of Surgery and Gastrointestinal Research Interdisciplinary Program, University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555, USA
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Chen W, Wu K, Lin M, Tang L, Gu Z, Wang S, Lan C, Lan X, Li H, Huang M, Chen X, Sheng H. [A pilot study on malaria control by using a new strategy of combining strengthening infection source treatment and health education in mountainous areas of Hainan province]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:1-4. [PMID: 12563805] [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] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To explore a new malaria control strategy that fits current epiodemiological condition and coincides with modern medicine model and the principle of cost-benefit. METHODS The new strategy highlights the risk villages and risk population as the focal point and integrates health education with behavioral intervention. The main anti-malaria measures consists of carrying out health education in risk villages, giving mass drug administrations in risk population staying overnight in the mountain, following up malaria cases for implementing radical cure, but without using traditional residual spraying or impregnating bednets with insecticides. RESULTS After having adopted the new strategy and taken the control measures, the people's knowledge about malaria increased to a higher level and the indices of malaria reduced to a lower level. The rate of bednet-using in the population was increased from 26.8% to 72.6%. The annual parasite incidence (API) of malaria was declined from 3.5% in 1994 to 1.1% in 1996 and 0.8% in 1997, and the API of falciparum malaria was declined from 1.0% to 0.3% and 0.3% respectively in the townships at the same time. The parasite rate(PR) of malaria was declined from 7.2% in May, 1995 to 2.1% in November, 1996 and 1.2% in October, 1997 and the PR of falciparum malaria was declined from 1.2% in May, 1995 to 0.1% in October, 1997. The proportion of villages without malaria cases was increased from 18.6% in 1994 to 54.2% in 1997, and the number of risk villages with a malaria incidence above 5% was reduced from 14 to 2 at the same time. The ratio of cost/benefit was 1:2.4 in 1995-1996 and 1:4.4 in 1997, showing a better economic benefit. CONCLUSION The expectant result has been obtained, thereby providing new experience for the malaria control in the mountainous areas of Hainan Province.
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Affiliation(s)
- W Chen
- Hainan Provincial Institute of Tropical Diseases, Haikou 570203
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McDaniel B, Sheng H, Warner DS, Hedlund LW, Benveniste H. Tracking brain volume changes in C57BL/6J and ApoE-deficient mice in a model of neurodegeneration: a 5-week longitudinal micro-MRI study. Neuroimage 2001; 14:1244-55. [PMID: 11707081 DOI: 10.1006/nimg.2001.0934] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [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: 11/22/2022] Open
Abstract
Magnetic resonance imaging (MRI)-based volume measurements of brain structures are useful indicators of pending cognitive decline in humans suffering from neurodegenerative diseases. Transgenic mouse models that mimic the clinical conditions of these disorders have been developed. Noninvasive methods that can follow progression and regression of relevant pathology in these mice are therefore in great demand. In this study we tested whether high-resolution MRI (micro-MRI) in a mouse model of neurodegeneration (cerebral ischemia) could reliably track development of brain atrophy. We first established that diffusion imaging at a spatial resolution of 1.6 x 10(-3) mm(3) allowed superior visualization of forebrain, ventricles, and dorsal hippocampus in the mouse brain compared to either T2*- or T1-weighted MR imaging. Using this predetermined protocol we subsequently scanned C56BL/6J (C57) and ApoE-deficient (ApoE(-/-)) mice before and after ischemia. Four groups were studied: C57/sham (n = 9), ApoE(-/-)/sham (n = 9), C57/ischemia (n = 9), and ApoE(-/-)/ischemia (n = 11). All mice received a baseline 3D diffusion scan. One week later C57/ischemia and ApoE(-/-)/ischemia mice were exposed to 10 min of ischemia and scanned again on the 3rd and 30th postischemic day. The C57/sham and ApoE(-/-)/sham mice served as controls and were scanned at corresponding time points. Diffusion images of ApoE(-/-)/ischemia mice on the 3rd postischemic day revealed multiple localized high signal intensity areas. An increase in ventricle and a decrease in dorsal hippocampal volumes (which included the associated cortex laterally) at 30 days confirmed brain atrophy in C57 mice after ischemia. Excessive mortality of ApoE(-/-)/ischemia mice restricted statistical analysis, but ventricle enlargement postischemia was demonstrated. Our results show that volume changes in the brain of a 30-g mouse can be tracked by micro-MRI in a model of neurodegeneration. Clearly the ability to follow progression of pathology in mice will greatly aid our understanding of neurodegenerative diseases and facilitate the many possibilities to intervene pharmacologically.
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Affiliation(s)
- B McDaniel
- Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710, USA
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Williams CS, Sheng H, Brockman JA, Armandla R, Shao J, Washington MK, Elkahloun AG, DuBois RN. A cyclooxygenase-2 inhibitor (SC-58125) blocks growth of established human colon cancer xenografts. Neoplasia 2001; 3:428-36. [PMID: 11687954 PMCID: PMC1506203 DOI: 10.1038/sj.neo.7900177] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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] [Received: 03/18/2001] [Accepted: 05/09/2001] [Indexed: 12/21/2022] Open
Abstract
Selective COX-2 inhibitors reduce adenoma formation and cancer progression in rodent models of colorectal cancer. To assess the therapeutic activity of selective COX-2 inhibitors, we tested the effect of SC-58125 treatment on the growth of human colon carcinoma cells in nude mice. Delaying treatment by 2, 4, or 7 weeks following implantation of the carcinoma cells resulted in a significant inhibition of tumor growth. Furthermore, short-term (48 hours) treatment with SC-58125 was sufficient to attenuate tumor growth for up to 15 days. SC-58125 treatment did not alter the rate at which cells underwent apoptosis, but did result in a delayed progression through the cell cycle at the G(2)/M transition. Accordingly, p34(cdc2) protein levels and activity were decreased following SC-58125 treatment. We conclude that SC-58125 primarily exerts a cytostatic effect in vivo, which is likely to be mediated through inhibition of progression through the G(2)/M phase of the cell cycle.
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Affiliation(s)
- C S Williams
- Department of Medicine, The Vanderbilt Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232-2279, USA
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Mackensen GB, Patel M, Sheng H, Calvi CL, Batinic-Haberle I, Day BJ, Liang LP, Fridovich I, Crapo JD, Pearlstein RD, Warner DS. Neuroprotection from delayed postischemic administration of a metalloporphyrin catalytic antioxidant. J Neurosci 2001; 21:4582-92. [PMID: 11425886 PMCID: PMC6762378] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2001] [Revised: 04/06/2001] [Accepted: 04/13/2001] [Indexed: 02/20/2023] Open
Abstract
Reactive oxygen species contribute to ischemic brain injury. This study examined whether the porphyrin catalytic antioxidant manganese (III) meso-tetrakis (N-ethylpyridinium-2-yl)porphyrin (MnTE-2-PyP(5+)) reduces oxidative stress and improves outcome from experimental cerebral ischemia. Rats that were subjected to 90 min focal ischemia and 7 d recovery were given MnTE-2-PyP(5+) (or vehicle) intracerebroventricularly 60 min before ischemia, or 5 or 90 min or 6 or 12 hr after reperfusion. Biomarkers of brain oxidative stress were measured at 4 hr after postischemic treatment (5 min or 6 hr). MnTE-2-PyP(5+), given 60 min before ischemia, improved neurologic scores and reduced total infarct size by 70%. MnTE-2-PyP(5+), given 5 or 90 min after reperfusion, reduced infarct size by 70-77% and had no effect on temperature. MnTE-2-PyP(5+) treatment 6 hr after ischemia reduced total infarct volume by 54% (vehicle, 131 +/- 60 mm(3); MnTE-2-PyP(5+), 300 ng, 60 +/- 68 mm(3)). Protection was observed in both cortex and caudoputamen, and neurologic scores were improved. No MnTE-2-PyP(5+) effect was observed if it was given 12 hr after ischemia. MnTE-2-PyP(5+) prevented mitochondrial aconitase inactivation and reduced 8-hydroxy-2'-deoxyguanosine formation when it was given 5 min or 6 hr after ischemia. In mice, MnTE-2-PyP(5+) reduced infarct size and improved neurologic scores when it was given intravenously 5 min after ischemia. There was no effect of 150 or 300 ng of MnTE-2-PyP(5+) pretreatment on selective neuronal necrosis resulting from 10 min forebrain ischemia and 5 d recovery in rats. Administration of a metalloporphyrin catalytic antioxidant had marked neuroprotective effects against focal ischemic insults when it was given up to 6 hr after ischemia. This was associated with decreased postischemic superoxide-mediated oxidative stress.
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Affiliation(s)
- G B Mackensen
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina 27710, USA
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Fujimoto K, Sheng H, Shao J, Beauchamp RD. Transforming growth factor-beta1 promotes invasiveness after cellular transformation with activated Ras in intestinal epithelial cells. Exp Cell Res 2001; 266:239-49. [PMID: 11399052 DOI: 10.1006/excr.2000.5229] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.8] [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: 01/30/2023]
Abstract
Invasion is a defining event in carcinoma progression. In general, invasive carcinoma is characterized by an epithelial-fibroblastoid conversion associated with loss of cell-cell adhesion receptors such as E-cadherin and beta-catenin. We report here that TGF-beta1 promotes the invasiveness by modulating the alterations of cellular plasticity including a loss of cell-cell contact in Ras-transformed epithelial cells. In order to examine the role of TGF-beta1 in the Ras-induced responses, intestinal epithelial cells expressing a conditionally activated Ha-Ras(Val12) (RIE-iRas cells) were used in this study. Induced expression of activated Ha-Ras(Val12) caused morphologic transformation of the RIE-iRas cells with an increase in vimentin expression and a decrease of E-cadherin levels. There was also redistribution of beta-catenin from the cytoplasm to the nucleus after the induction of Ras. TGF-beta1 treatment enhanced both the decrease in E-cadherin levels and the redistribution of beta-catenin. Interestingly, the activation of Ras markedly decreased the level of TGF-beta receptor type II (TbetaRII) in RIE-iRas cells. However, the expression of plasminogen activator inhibitor-1, which is known to be transcriptionally induced by TGF-beta1, was strongly induced by TGF-beta1 despite the marked downregulation of TbetaRII. The induction of Ha-Ras(Val12) markedly increased the invasiveness in RIE-iRas cells, as evaluated by a collagen type I-coated Boyden-chamber assay, and the Ras-mediated invasiveness was significantly enhanced by TGF-beta1 treatment. Expression of a dominant-negative form of TbetaRII in the RIE-iRas cells abrogated both growth-inhibitory and invasion responses to TGF-beta1. Collectively, these results suggest that TGF-beta1 and oncogenic Ras collaborate in promoting cellular invasiveness in intestinal epithelial cells. The enhancement of invasiveness was correlated with decreased E-cadherin levels and subcellular distribution of beta-catenin. The enhancement of oncogenic Ras-mediated cell transformation by TGF-beta1 occurs via TbetaRII.
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Affiliation(s)
- K Fujimoto
- Department of Surgery, Vanderbilt University Medical Center and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee 37232, USA
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Mann M, Sheng H, Shao J, Williams CS, Pisacane PI, Sliwkowski MX, DuBois RN. Targeting cyclooxygenase 2 and HER-2/neu pathways inhibits colorectal carcinoma growth. Gastroenterology 2001; 120:1713-9. [PMID: 11375952 DOI: 10.1053/gast.2001.24844] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND & AIMS The cyclooxygenase 2 (COX-2) and ErbB/HER pathways are important modulators of cancer cell growth. We sought to determine the effects of treatment with a specific COX-2 inhibitor and/or a monoclonal antibody against the ErbB receptor subtype HER-2/neu on carcinoma cell growth. METHODS A cell-proliferation assay was used to determine the response of HCA-7 cells to the HER-3/HER-4 ligand heregulin beta-1 (HRGbeta-1). Both in vitro and in vivo assays were used to determine the effects of the selective COX-2 inhibitor, celecoxib, and/or an anti-HER-2/neu monoclonal antibody (either Herceptin [Genetech Inc., S. San Francisco, CA] or 2C4) on cell growth. RESULTS HCA-7 cells express HER-2/neu messenger RNA and protein, and exposure of these cells to HRGbeta-1 results in a significant stimulation of cell growth. Celecoxib or Herceptin inhibits HCA-7 cell growth in vitro and in vivo. Combination therapy with celecoxib plus Herceptin or celecoxib plus 2C4 resulted in additive effects that resulted in almost complete inhibition of tumor growth. CONCLUSIONS Combined treatment with COX-2 and HER-2/neu inhibitors more effectively reduces colorectal carcinoma growth than either agent alone. Therefore, targeting of both the COX-2 and ErbB signaling pathways may represent a novel approach for the treatment and/or prevention of colorectal cancer in humans.
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Affiliation(s)
- M Mann
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232-2279, USA
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Pineda JA, Aono M, Sheng H, Lynch J, Wellons JC, Laskowitz DT, Pearlstein RD, Bowler R, Crapo J, Warner DS. Extracellular superoxide dismutase overexpression improves behavioral outcome from closed head injury in the mouse. J Neurotrauma 2001; 18:625-34. [PMID: 11437085 DOI: 10.1089/089771501750291864] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [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: 11/13/2022] Open
Abstract
Oxidative stress is known to play an important role in the response of brain to traumatic insults. We tested the hypothesis that increased extracellular superoxide dismutase (EC-SOD) expression can reduce injury in a mouse model of closed head injury. Neurologic, cognitive, and histologic outcomes were compared between transgenic mice exhibiting a fivefold increase in EC-SOD activity and wild-type littermate controls. Severe or moderate transcranial impact was induced in anesthetized and physiologically controlled animals. After severe impact, transgenic mice had better neurological outcome at 24 hr postinjury (p = 0.038). Brain water content was increased, but there was no difference between groups. Moderate impact resulted in predominantly mild neurologic deficits in both groups at both 24 hr and 14 days postinjury. Morris water maze performance, testing cognitive function at 14-17 days after trauma, was better in EC-SOD overexpressors (p = 0.018). No differences were observed between groups for histologic damage in hippocampal CA1 and CA3. We conclude that EC-SOD has a beneficial effect on behavioral outcome after both severe and moderate closed head injury in mice. Because EC-SOD is believed to be predominantly located in the extracellular space, these data implicate an adverse effect of extracellular superoxide anion on outcome from closed head injury.
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Affiliation(s)
- J A Pineda
- Division of Pediatric Critical Care, Duke University Medical Center, Durham, North Carolina, 27710, USA
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