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Yu X, Xiang J, Zhang Q, Chen S, Tang W, Li X, Sui Y, Liu W, Kong Q, Guo Y. Corrigendum to Triple-negative breast cancer: predictive model of early recurrence based on MRI features [78 (11) e798-e807]. Clin Radiol 2024; 79:e640. [PMID: 38316571 DOI: 10.1016/j.crad.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Affiliation(s)
- X Yu
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - J Xiang
- Guangdong Women and Children Hospital, No. 13 West Guangyuan Road, Guangzhou, Guangdong, 510010, China
| | - Q Zhang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - S Chen
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - W Tang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - X Li
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Y Sui
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - W Liu
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China.
| | - Q Kong
- Department of Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China.
| | - Y Guo
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China.
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Chen S, Sui Y, Ding S, Chen C, Liu C, Zhong Z, Liang Y, Kong Q, Tang W, Guo Y. A simple and convenient model combining multiparametric MRI and clinical features to predict tumour-infiltrating lymphocytes in breast cancer. Clin Radiol 2023; 78:e1065-e1074. [PMID: 37813758 DOI: 10.1016/j.crad.2023.08.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 10/11/2023]
Abstract
AIM To develop a simple and convenient method based on multiparametric magnetic resonance imaging (MRI) and clinical features to non-invasively predict tumour-infiltrating lymphocytes (TILs) in breast cancer (BC) and to explore the relationship between TIL levels and disease-free survival (DFS). MATERIALS AND METHODS A total of 172 BC patients were enrolled between November 2017 and June 2021 in this retrospective study. The patients were divided into high (≥10%) and low (<10%) TIL groups. Clinicopathological data were collected. MRI features were reviewed by two radiologists. Predictors associated with TILs were determined by using multivariable logistic regression analyses. Kaplan-Meier survival curves based on TIL levels were used to estimate DFS. RESULTS A total of 102 patients with low TILs and 70 patients with high TILs were included in the study. Tumour size (odds ratio [OR], 1.040; 95% confidence interval [CI]: 1.006, 1.075; p=0.020), apparent diffusion coefficient (ADC; OR, 1.003; 95% CI: 1.001, 1.005; p=0.015), clinical axillary lymph node status (CALNS; OR, 3.222; 95% CI: 1.372,7.568; p=0.007), and enhancement pattern (OR, 0.284; 95% CI: 0.143, 0.563; p<0.001) were independently associated with TIL levels. These features were used in the ALSE model (where A is ADC, L is CALNS, S is size, and E is enhancement pattern). High TILs were associated with better DFS (p=0.016). CONCLUSION The ALSE model derived from multiparametric MRI and clinical features could non-invasively predict TIL levels in BC, and high TILs were associated with longer DFS, especially in human epidermal growth factor receptor 2 (HER2)-positive BC and triple-negative BC (TNBC).
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Affiliation(s)
- S Chen
- Department of Radiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China
| | - Y Sui
- Department of Radiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China; Department of Radiology, Guangzhou Women and Children's Medical Center, Guangzhou, 510005, China
| | - S Ding
- Department of Radiology, Liuzhou People's Hospital, Guangxi Medical University, Liuzhou, 545006, China
| | - C Chen
- Department of Pathology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China
| | - C Liu
- Department of Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Z Zhong
- Department of Radiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China
| | - Y Liang
- Department of Pathology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China
| | - Q Kong
- Department of Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China.
| | - W Tang
- Department of Radiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China.
| | - Y Guo
- Department of Radiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, China.
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Zhang C, Jia Y, Kong Q. Case report: Squamous cell carcinoma of the prostate-a clinicopathological and genomic sequencing-based investigation. Pathol Oncol Res 2023; 29:1611343. [PMID: 38089646 PMCID: PMC10713708 DOI: 10.3389/pore.2023.1611343] [Citation(s) in RCA: 1] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023]
Abstract
Squamous differentiation of prostate cancer, which accounts for less than 1% of all cases, is typically associated with androgen deprivation treatment (ADT) or radiotherapy. This entity is aggressive and exhibits poor prognosis due to limited response to traditional treatment. However, the underlying molecular mechanisms and etiology are not fully understood. Previous findings suggest that squamous cell differentiation may potentially arise from prostate adenocarcinoma (AC), but further validation is required to confirm this hypothesis. This paper presents a case of advanced prostate cancer with a combined histologic pattern, including keratinizing SCC and AC. The study utilized whole-exome sequencing (WES) data to analyze both subtypes and identified a significant overlap in driver gene mutations between them. This suggests that the two components shared a common origin of clones. These findings emphasize the importance of personalized clinical management for prostate SCC, and specific molecular findings can help optimize treatment strategies.
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Affiliation(s)
- Caixin Zhang
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, China
| | - Yong Jia
- Department of Urology, Qingdao Municipal Hospital, Qingdao, China
| | - Qingnuan Kong
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, China
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Yu X, Xiang J, Zhang Q, Chen S, Tang W, Li X, Sui Y, Liu W, Kong Q, Guo Y. Triple-negative breast cancer: predictive model of early recurrence based on MRI features. Clin Radiol 2023; 78:e798-e807. [PMID: 37596179 DOI: 10.1016/j.crad.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/13/2023] [Accepted: 07/18/2023] [Indexed: 08/20/2023]
Abstract
AIM To develop an integrated model based on preoperative magnetic resonance imaging (MRI) features for predicting early recurrence in patients with triple-negative breast cancer (TNBC). MATERIALS AND METHODS Women with TNBC who underwent breast MRI and surgery between 2009 and 2019 were evaluated retrospectively. Two breast radiologists reviewed MRI images independently based on the Breast Imaging Reporting and Data System Lexicon (BI-RADS), and classified the breast oedema scores on T2-weighted imaging (WI) as no oedema, peritumoural oedema, prepectoral oedema, or subcutaneous oedema. The relationship between disease-free survival (DFS) and MRI features was analysed by Cox regression, and a nomogram model was generated based on the results. RESULTS 150 patients with TNBC were included and divided into a training cohort (n=78) and validation cohort (n=72). MRI features including subcutaneous oedema and rim enhancement showed a tendency to worsen DFS in univariate analysis. Multivariate analysis showed that subcutaneous oedema (p=0.049, HR [95% confidence interval {CI} = 8.24 [1.01-67.52]) and rim enhancement (p=0.016, HR [95% CI] = 4.38 [1.32-14.54]) were independent predictors for DFS. In the nomogram, the areas under the curves (AUCs) of the training cohort was 0.808, and that of the validation cohort was 0.875. CONCLUSION The presence of subcutaneous oedema or rim enhancement on preoperative breast MRI was shown to be a good predictor of poor survival outcomes in patients with TNBC.
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Affiliation(s)
- X Yu
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - J Xiang
- Guangdong Women and Children Hospital, No. 13 West Guangyuan Road, Guangzhou, Guangdong, 510010, China
| | - Q Zhang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - S Chen
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - W Tang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - X Li
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Y Sui
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - W Liu
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China.
| | - Q Kong
- Department of Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China.
| | - Y Guo
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China.
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Zhu W, Zhang T, Luan S, Kong Q, Hu W, Zou X, Zheng F, Han W. Identification of a novel nine-SnoRNA signature with potential prognostic and therapeutic value in ovarian cancer. Cancer Med 2022; 11:2159-2170. [PMID: 35187852 PMCID: PMC9119353 DOI: 10.1002/cam4.4598] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/23/2021] [Accepted: 12/28/2021] [Indexed: 11/18/2022] Open
Abstract
Background Increasing evidence has been confirmed that small nucleolar RNAs (SnoRNAs) play critical roles in tumorigenesis and exhibit prognostic value in clinical practice. However, there is short of systematic research on SnoRNAs in ovarian cancer (OV). Material/Methods 379 OV patients with RNA‐Seq and clinical parameters from TCGA database and 5 paired clinical OV tissues were embedded in our study. Cox regression analysis was used to identify prognostic SnoRNAs and construct prediction model. SNORic database was adopted to examine the copy number variation of SnoRNAs. ROC curves and KM plot curves were applied to validate the prognostic model. Besides, the model was validated in 5 paired clinical tissues by real‐time PCR, H&E staining and immunohistochemistry. Results A prognostic model was constructed on the basis of SnoRNAs in OV patients. Patients with higher RiskScore had poor clinicopathological parameters, including higher age, larger tumor size, advanced stage and with tumor status. KM plot analysis confirmed that patients with higher RiskScore had poorer prognosis in subgroup of age, tumor size, and stage. 7 of 9 SnoRNAs in the prognostic model had positive correlation with their host genes. Moreover, 5 of 9 SnoRNAs in the prognostic model correlated with their CNVs, and SNORD105B had the strongest correction with its CNVs. ROC curve showed that the RiskScore had excellent specificity and accuracy. Further, results of H&E staining and immunohistochemistry of Ki67, P53 and P16 confirmed that patients with higher RiskScore are more malignant. Conclusions In summary, we identified a nine‐SnoRNAs signature as an independent indicator to predict prognosis of OV, providing a prospective prognostic biomarker and potential therapeutic targets for ovarian cancer.
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Affiliation(s)
- Wenjing Zhu
- Clinical Research Center, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.,Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, Shandong, China.,Respiratory Disease Key Laboratory of Qingdao, Qingdao Municipal Hospital, Qingdao, China
| | - Tao Zhang
- Department of Gynecology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, Shandong, China
| | - Shaohong Luan
- Department of Gynecology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, Shandong, China
| | - Qingnuan Kong
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, Shandong Province, China
| | - Wenmin Hu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Xin Zou
- Department of Pathology Qingdao Municipal Hospital, Dalian Medical University, Dalian, China
| | - Feibo Zheng
- Department of Nuclear Medicine, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Wei Han
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, Shandong, China.,Respiratory Disease Key Laboratory of Qingdao, Qingdao Municipal Hospital, Qingdao, China
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Epstein JI, Amin MB, Fine SW, Algaba F, Aron M, Baydar DE, Beltran AL, Brimo F, Cheville JC, Colecchia M, Comperat E, da Cunha IW, Delprado W, DeMarzo AM, Giannico GA, Gordetsky JB, Guo CC, Hansel DE, Hirsch MS, Huang J, Humphrey PA, Jimenez RE, Khani F, Kong Q, Kryvenko ON, Kunju LP, Lal P, Latour M, Lotan T, Maclean F, Magi-Galluzzi C, Mehra R, Menon S, Miyamoto H, Montironi R, Netto GJ, Nguyen JK, Osunkoya AO, Parwani A, Robinson BD, Rubin MA, Shah RB, So JS, Takahashi H, Tavora F, Tretiakova MS, True L, Wobker SE, Yang XJ, Zhou M, Zynger DL, Trpkov K. The 2019 Genitourinary Pathology Society (GUPS) White Paper on Contemporary Grading of Prostate Cancer. Arch Pathol Lab Med 2021; 145:461-493. [PMID: 32589068 DOI: 10.5858/arpa.2020-0015-ra] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2020] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Controversies and uncertainty persist in prostate cancer grading. OBJECTIVE.— To update grading recommendations. DATA SOURCES.— Critical review of the literature along with pathology and clinician surveys. CONCLUSIONS.— Percent Gleason pattern 4 (%GP4) is as follows: (1) report %GP4 in needle biopsy with Grade Groups (GrGp) 2 and 3, and in needle biopsy on other parts (jars) of lower grade in cases with at least 1 part showing Gleason score (GS) 4 + 4 = 8; and (2) report %GP4: less than 5% or less than 10% and 10% increments thereafter. Tertiary grade patterns are as follows: (1) replace "tertiary grade pattern" in radical prostatectomy (RP) with "minor tertiary pattern 5 (TP5)," and only use in RP with GrGp 2 or 3 with less than 5% Gleason pattern 5; and (2) minor TP5 is noted along with the GS, with the GrGp based on the GS. Global score and magnetic resonance imaging (MRI)-targeted biopsies are as follows: (1) when multiple undesignated cores are taken from a single MRI-targeted lesion, an overall grade for that lesion is given as if all the involved cores were one long core; and (2) if providing a global score, when different scores are found in the standard and the MRI-targeted biopsy, give a single global score (factoring both the systematic standard and the MRI-targeted positive cores). Grade Groups are as follows: (1) Grade Groups (GrGp) is the terminology adopted by major world organizations; and (2) retain GS 3 + 5 = 8 in GrGp 4. Cribriform carcinoma is as follows: (1) report the presence or absence of cribriform glands in biopsy and RP with Gleason pattern 4 carcinoma. Intraductal carcinoma (IDC-P) is as follows: (1) report IDC-P in biopsy and RP; (2) use criteria based on dense cribriform glands (>50% of the gland is composed of epithelium relative to luminal spaces) and/or solid nests and/or marked pleomorphism/necrosis; (3) it is not necessary to perform basal cell immunostains on biopsy and RP to identify IDC-P if the results would not change the overall (highest) GS/GrGp part per case; (4) do not include IDC-P in determining the final GS/GrGp on biopsy and/or RP; and (5) "atypical intraductal proliferation (AIP)" is preferred for an intraductal proliferation of prostatic secretory cells which shows a greater degree of architectural complexity and/or cytological atypia than typical high-grade prostatic intraepithelial neoplasia, yet falling short of the strict diagnostic threshold for IDC-P. Molecular testing is as follows: (1) Ki67 is not ready for routine clinical use; (2) additional studies of active surveillance cohorts are needed to establish the utility of PTEN in this setting; and (3) dedicated studies of RNA-based assays in active surveillance populations are needed to substantiate the utility of these expensive tests in this setting. Artificial intelligence and novel grading schema are as follows: (1) incorporating reactive stromal grade, percent GP4, minor tertiary GP5, and cribriform/intraductal carcinoma are not ready for adoption in current practice.
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Affiliation(s)
- Jonathan I Epstein
- From the Departments of Pathology (Epstein, DeMarzo, Lotan), McGill University Health Center, Montréal, Quebec, Canada.,Urology (Epstein), David Geffen School of Medicine at UCLA, Los Angeles, California (Huang).,and Oncology (Epstein), The Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Mahul B Amin
- Department of Pathology and Laboratory Medicine and Urology, University of Tennessee Health Science, Memphis (Amin)
| | - Samson W Fine
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York (Fine)
| | - Ferran Algaba
- Department of Pathology, Fundacio Puigvert, Barcelona, Spain (Algaba)
| | - Manju Aron
- Department of Pathology, University of Southern California, Los Angeles (Aron)
| | - Dilek E Baydar
- Department of Pathology, Faculty of Medicine, Koç University, İstanbul, Turkey (Baydar)
| | - Antonio Lopez Beltran
- Department of Pathology, Champalimaud Centre for the Unknown, Lisbon, Portugal (Beltran)
| | - Fadi Brimo
- Department of Pathology, McGill University Health Center, Montréal, Quebec, Canada (Brimo)
| | - John C Cheville
- Department of Pathology, Mayo Clinic, Rochester, Minnesota (Cheville, Jimenez)
| | - Maurizio Colecchia
- Department of Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy (Colecchia)
| | - Eva Comperat
- Department of Pathology, Hôpital Tenon, Sorbonne University, Paris, France (Comperat)
| | | | | | - Angelo M DeMarzo
- From the Departments of Pathology (Epstein, DeMarzo, Lotan), McGill University Health Center, Montréal, Quebec, Canada
| | - Giovanna A Giannico
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee (Giannico, Gordetsky)
| | - Jennifer B Gordetsky
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee (Giannico, Gordetsky)
| | - Charles C Guo
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston (Guo)
| | - Donna E Hansel
- Department of Pathology, Oregon Health and Science University, Portland (Hansel)
| | - Michelle S Hirsch
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts (Hirsch)
| | - Jiaoti Huang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California (Huang)
| | - Peter A Humphrey
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut (Humphrey)
| | - Rafael E Jimenez
- Department of Pathology, Mayo Clinic, Rochester, Minnesota (Cheville, Jimenez)
| | - Francesca Khani
- Department of Pathology and Laboratory Medicine and Urology, Weill Cornell Medicine, New York, New York (Khani, Robinson)
| | - Qingnuan Kong
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, Shandong, China (Kong).,Kong is currently located at Kaiser Permanente Sacramento Medical Center, Sacramento, California
| | - Oleksandr N Kryvenko
- Departments of Pathology and Laboratory Medicine and Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida (Kryvenko)
| | - L Priya Kunju
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan (Kunju, Mehra)
| | - Priti Lal
- Perelman School of Medicine, University of Pennsylvania, Philadelphia (Lal)
| | - Mathieu Latour
- Department of Pathology, CHUM, Université de Montréal, Montréal, Quebec, Canada (Latour)
| | - Tamara Lotan
- From the Departments of Pathology (Epstein, DeMarzo, Lotan), McGill University Health Center, Montréal, Quebec, Canada
| | - Fiona Maclean
- Douglass Hanly Moir Pathology, Faculty of Medicine and Health Sciences Macquarie University, North Ryde, Australia (Maclean)
| | - Cristina Magi-Galluzzi
- Department of Pathology, The University of Alabama at Birmingham, Birmingham (Magi-Galluzzi, Netto)
| | - Rohit Mehra
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan (Kunju, Mehra)
| | - Santosh Menon
- Department of Surgical Pathology, Tata Memorial Hospital, Parel, Mumbai, India (Menon)
| | - Hiroshi Miyamoto
- Departments of Pathology and Laboratory Medicine and Urology, University of Rochester Medical Center, Rochester, New York (Miyamoto)
| | - Rodolfo Montironi
- Section of Pathological Anatomy, School of Medicine, Polytechnic University of the Marche Region, United Hospitals, Ancona, Italy (Montironi)
| | - George J Netto
- Department of Pathology, The University of Alabama at Birmingham, Birmingham (Magi-Galluzzi, Netto)
| | - Jane K Nguyen
- Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio (Nguyen)
| | - Adeboye O Osunkoya
- Department of Pathology, Emory University School of Medicine, Atlanta, Georgia (Osunkoya)
| | - Anil Parwani
- Department of Pathology, Ohio State University, Columbus (Parwani, Zynger)
| | - Brian D Robinson
- Department of Pathology and Laboratory Medicine and Urology, Weill Cornell Medicine, New York, New York (Khani, Robinson)
| | - Mark A Rubin
- Department for BioMedical Research, University of Bern, Bern, Switzerland (Rubin)
| | - Rajal B Shah
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas (Shah)
| | - Jeffrey S So
- Institute of Pathology, St Luke's Medical Center, Quezon City and Global City, Philippines (So)
| | - Hiroyuki Takahashi
- Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan (Takahashi)
| | - Fabio Tavora
- Argos Laboratory, Federal University of Ceara, Fortaleza, Brazil (Tavora)
| | - Maria S Tretiakova
- Department of Pathology, University of Washington School of Medicine, Seattle (Tretiakova, True)
| | - Lawrence True
- Department of Pathology, University of Washington School of Medicine, Seattle (Tretiakova, True)
| | - Sara E Wobker
- Departments of Pathology and Laboratory Medicine and Urology, University of North Carolina, Chapel Hill (Wobker)
| | - Ximing J Yang
- Department of Pathology, Northwestern University, Chicago, Illinois (Yang)
| | - Ming Zhou
- Department of Pathology, Tufts Medical Center, Boston, Massachusetts (Zhou)
| | - Debra L Zynger
- Department of Pathology, Ohio State University, Columbus (Parwani, Zynger)
| | - Kiril Trpkov
- and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada (Trpkov)
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Liu Q, Dong J, Li J, Duan Y, Wang K, Kong Q, Zhang H. LINC01255 combined with BMI1 to regulate human mesenchymal stromal senescence and acute myeloid leukemia cell proliferation through repressing transcription of MCP-1. Clin Transl Oncol 2021; 23:1105-1116. [PMID: 33405050 DOI: 10.1007/s12094-020-02505-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/05/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) govern fundamental biochemical and cellular biology processes, for example, participate in chromatin remodeling, imprinting, splicing, transcriptional regulation and translation. Dysregulation of lncRNA expression is act as a feature of various diseases and cancers, including hematopoietic malignancies. However, the clinical relevance of myelodysplastic syndrome (MDS) and acute myeloid leukemia preceded by MDS (MDS-AML) requires further research. Recently, lncRNAs have been demonstrated, which play an important role in hematopoiesis, thus, to further finding more functional lncRNA seemed particularly important. METHODS Western blotting, real-time PCR, RNA-pulldown, RIP (RNA immunoprecipitation), Chromatin immunoprecipitation (ChIP), cellular compartments extraction assays, SA-β-gal staining, lentivirus transfection, cell viability assay and cell proliferation assays were used to examine the relationship between lncRNA LINC01255 and its regulation of p53-p21 pathway in human mesenchymal stromal and acute myeloid leukemia cells. RESULTS LncRNA LINC01255 is highly expressed in bone marrow cells of AML patients, CD34+ cells of MDS-AML patients and AML cell lines and the higher expression of LINC01255 is associated with poor survival rate of AML patients. LINC01255 can interact with BMI1 and repress the transcription of MCP-1 to active p53-p21 pathway, thus inhibiting the senescence of human mesenchymal stromal and proliferation of acute myeloid leukemia cell. CONCLUSIONS We discovered a novel functional lncRNA LINC01255, which can regulate the senescence of human mesenchymal stromal and the proliferation of acute myeloid leukemia cell through inhibiting the transcription of MCP-1.
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Affiliation(s)
- Q Liu
- Clinical Laboratory, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong, China
| | - J Dong
- Department of Hematology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - J Li
- Department of Hematology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Y Duan
- Department of Hematology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - K Wang
- Research Service Office, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong, China
| | - Q Kong
- Department of Hematology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - H Zhang
- Department of Hematology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China.
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Xie J, Liu W, Lv W, Han X, Kong Q, Wu Y, Liu X, Han Y, Shi C, Jia X. Transmembrane protein 16A/anoctamin 1 inhibitor T16A
inh
‐A01 reversed monocrotaline‐induced rat pulmonary arterial hypertension. Pulm Circ 2020; 10:2045894020946670. [PMID: 35154665 PMCID: PMC8826276 DOI: 10.1177/2045894020946670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 07/06/2020] [Indexed: 11/17/2022] Open
Abstract
Transmembrane protein 16A was involved in the development of the
monocrotaline-induced pulmonary arterial hypertension model through ERK1/2
activation, and it was considered as potential target for pulmonary arterial
hypertension treatment. A pulmonary arterial hypertension rat model was
established by intraperitoneal administration of monocrotaline. Noninvasive
pulsed-wave Doppler and histological analysis was performed, and it revealed
proliferation and remodeling of pulmonary arterioles and right ventricle
hypertrophy. In addition, transmembrane protein 16A, proliferating cell nuclear
antigen—a proliferate marker, P-ERK1/2 increased following monocrotaline
treatment. Expression of transmembrane protein 16A in the pulmonary arteries was
co-localized with a specific marker of vascular smooth muscle α-actin. Then, a
specific inhibitor of transmembrane protein 16A-T16Ainh-A01 was
administered to pulmonary arterial hypertension rats. It was found to alleviate
the remodeling of pulmonary arterioles and right ventricle hypertrophy
significantly, and decrease the upregulation of proliferating cell nuclear
antigen in monocrotaline-induced pulmonary arteries. In addition,
T16Ainh-A01 could inhibit the activation of ERK1/2 in pulmonary
arterial hypertension model. Transmembrane protein 16A mediated the
proliferation and remodeling of pulmonary arterioles in the
monocrotaline-induced pulmonary arterial hypertension model. ERK1/2 pathway is
one of downstream factors. Long-term use of T16Ainh-A01 in vivo could
alleviate remodeling and pressure in pulmonary arterial hypertension.
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Affiliation(s)
- Jianye Xie
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
| | - Wenyuan Liu
- Department of General MedicineFirst Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
| | - Wenjing Lv
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
| | - Xiaohua Han
- Department of Physiology and PathophysiologyCollege of MedicineQingdao UniversityQingdaoChina
| | - Qingnuan Kong
- Department of PathologyQingdao Municipal HospitalQingdaoChina
| | - Yuhui Wu
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
- Department of CardiologyAffiliated Cardiovascular Hospital of Qingdao UniversityQingdaoChina
| | - Xin Liu
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
| | - Ying Han
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
| | - Chunying Shi
- Department of Human AnatomyHistology and EmbryologyCollege of MedicineQingdao UniversityQingdaoChina
| | - Xiujuan Jia
- Department of GeriatricsAffiliated Hospital of Qingdao UniversityQingdaoChina
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9
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Wu Y, Song S, Kao Q, Kong Q, Sun Z, Wang B. Risk of SARS-CoV-2 infection among contacts of individuals with COVID-19 in Hangzhou, China. Public Health 2020; 185:57-59. [PMID: 32563739 PMCID: PMC7290211 DOI: 10.1016/j.puhe.2020.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 12/13/2022]
Abstract
Objectives This study determined the rate of secondary infection among contacts of individuals with confirmed coronavirus disease 2019 (COVID-19) in Hangzhou according to the type of contacts, the intensity of contacts, and their relationship with the index patient. Study design This is a retrospective cohort study. Methods The analysis used the data of 2994 contacts of 144 individuals with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The contacts were categorized according to the information source, type of contact, location, intensity of contact, and relationship with the index patient. Results The incidence of infection differed significantly according to contact type. Of the contacts, 186 (6.2%) developed symptoms, and 71 (2.4%) had confirmed SARS-CoV-2 infection. The main symptoms were cough and fever. Compared with those who had brief contact with the index case, those who had dined with the index case had 2.6 times higher risk of acquiring infection; those who had shared transport with, had visited, or had contact with the index case in a medical institution had 3.6 times higher risk of acquiring infection; and household contacts had 41.7 times higher risk of acquiring infection. Family members had 31.6 times higher risk of acquiring infection than healthcare providers or other patients exposed to an index case. Conclusions The form and frequency of contact are the main factors affecting the risk of infection among contacts of individuals with COVID-19. Centralized isolation and observation of close contacts of individuals with confirmed SARS-CoV-2 infection, in addition to population-based control measures, can reduce the risk of secondary infections and curb the spread of the infection. The incidence of infection differed significantly according to contact type. Contact form and frequency are important to the risk of COVID-19. Centralized isolation and observation of contacts curbed the spread of the infection.
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Affiliation(s)
- Y Wu
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China
| | - S Song
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China
| | - Q Kao
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China
| | - Q Kong
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China
| | - Z Sun
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China
| | - B Wang
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention, China.
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10
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Kong Q, Jin H, Sun Z, Kao Q, Chen J. Non-pharmaceutical intervention strategies for outbreak of COVID-19 in Hangzhou, China. Public Health 2020; 182:185-186. [PMID: 32339883 PMCID: PMC7181977 DOI: 10.1016/j.puhe.2020.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/11/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Q Kong
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention No.568 Mingshi Road, Hangzhou, 310021, China.
| | - H Jin
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention No.568 Mingshi Road, Hangzhou, 310021, China.
| | - Z Sun
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention No.568 Mingshi Road, Hangzhou, 310021, China.
| | - Q Kao
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention No.568 Mingshi Road, Hangzhou, 310021, China.
| | - J Chen
- Department of Infectious Disease Control and Prevention, Hangzhou Center of Disease Control and Prevention No.568 Mingshi Road, Hangzhou, 310021, China.
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11
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Sun W, Kong Q, Zhang M, Mi X, Sun X, Yu M, Yu T, Zhou Y. Virus-mediated Dnmt1 and Dnmt3a deletion disrupts excitatory synaptogenesis and synaptic function in primary cultured hippocampal neurons. Biochem Biophys Res Commun 2020; 526:361-367. [PMID: 32222282 DOI: 10.1016/j.bbrc.2020.03.094] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 03/17/2020] [Indexed: 10/24/2022]
Abstract
Dnmt1, Dnmt3a and Dnmt3b are main genes encoding DNA methyltransferases (Dnmts) which catalyze DNA methylation and regulate gene expression without changing DNA sequence. Our previous study disclosed that double knockout of Dnmt1 and Dnmt3a in forebrain excitatory neurons impaired synaptic plasticity and led to hippocampus-dependent learning and memory deficits, however the underlying synaptic mechanisms remain uncertain. In this study, we selectively knocked down the expression of Dnmt1 and Dnmt3a in primary cultured hippocampal neurons derived from embryonic Dnmt1,3a2flox/2flox mice by transfection with Cre-expressing virus, to study the effect of Dnmts and mediated DNA methylation on synaptogenesis and synaptic function. We found that the hippocampal neurons at 15 days in vitro (DIV15) exhibited similar size of cell body, but longer dendrites with reduced number of branches and lower density of excitatory synapses formation after virus-mediated Dnmt1 and Dnmt3a deletion. Supportively, cultured neurons with Dnmt1 and Dnmt3a deficiency displayed reduced frequency and amplitude of miniature excitatory postsynaptic currents (mEPSCs), indicating that both pre- and post-synaptic dysfunction are involved. In addition, our Ca2+-image study with Rhod-3AM revealed suppression of glutamate-evoked elevation of cytoplasmic [Ca2+] after Dnmt1 and Dnmt3a deletion. Altogether our findings provide new evidence that normal expression of Dnmt1 and Dnmt3a in hippocampal neurons are essential for excitatory synaptogenesis and synaptic function.
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Affiliation(s)
- Wei Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Qingnuan Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China; Department of Pathology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong, 266071, China
| | - Meng Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Xue Mi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Xiaomin Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Ming Yu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China
| | - Tengbo Yu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao Universtiy, Qingdao, Shandong, 266000, China.
| | - Yu Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong, 266071, China; Institute of Brain Sciences and Related Disorders, Qingdao University, Qingdao, Shandong, 266071, China.
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12
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Kong Q, Yu M, Zhang M, Wei C, Gu H, Yu S, Sun W, Li N, Zhou Y. Conditional Dnmt3b deletion in hippocampal dCA1 impairs recognition memory. Mol Brain 2020; 13:42. [PMID: 32183852 PMCID: PMC7079487 DOI: 10.1186/s13041-020-00574-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/27/2020] [Indexed: 12/22/2022] Open
Abstract
AIM Active changes in neuronal DNA methylation and demethylation appear to act as controllers of synaptic scaling and glutamate receptor trafficking in learning and memory formation. DNA methyltransferases (DNMTs), including proteins encoded by Dnmt1, Dnmt3a and Dnmt3b, are dominant enzymes carrying out DNA methylation. Our previous study demonstrated the important roles that DNMT1 and DNMT3a play in synaptic function and memory. In this study, we aim to explore the role of DNMT3b and its-mediated DNA methylation in memory processes. METHODS Dnmt3b was knocked down specifically in dorsal CA1 neurons of adult mice hippocampus by AAV-syn-Cre-GFP virus injection. Behavioral tests were used to evaluate memory performance. Gene expression microarray analysis followed by quantitative RT-PCR were performed to find differential expression genes. RESULTS Dnmt3bflox/flox mice receiving Cre-virus infection showed impaired novel object-place recognition (NPR) and normal novel object recognition (NOR), in comparison to mice receiving control GFP-virus infection. Microarray analysis revealed differential expression of K+ channel subunits in the hippocampus of Dnmt3bflox/flox mice receiving Cre-virus injection. Increased Kcne2 expression was confirmed by following qRT-PCR analysis. We also found that NPR training and testing induced up-regulation of hippocampal Dnmt1 and Dnmt3a mRNA expression in control mice, but not in Cre-virus injected mice. Our findings thus demonstrate that conditional Dnmt3b deletion in a sub-region of the hippocampus impairs a specific form of recognition memory that is hippocampus-dependent.
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Affiliation(s)
- Qingnuan Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
- Department of Pathology, Qingdao Municipal hospital, Qingdao University, Qingdao, 266071, Shandong, China
| | - Ming Yu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Meng Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Chuang Wei
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Huating Gu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Shaoyang Yu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Wei Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Nan Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China
| | - Yu Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Qingdao University, Qingdao, 266071, Shandong, China.
- Institute of Brain Sciences and Related Disorders, Qingdao University, Qingdao, 266071, Shandong, China.
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13
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Yin Z, Zhang X, Li J, Jiao Y, Kong Q, Mu Y. Identification of Imprinted Genes and Their Differentially Methylated Regions in Porcine. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795419120135] [Citation(s) in RCA: 1] [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: 11/23/2022]
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14
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Zhang L, Yan BY, Lyu JJ, Liu JY, Kong Q, Wu WL, Feng Y, Xu AQ. [Persistence of immune memory and its related factors at 12 years after hepatitis B vaccination among adults]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:497-502. [PMID: 31091608 DOI: 10.3760/cma.j.issn.0253-9624.2019.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To estimate the immune memory at 12 years after hepatitis B vaccination and its risk factors among adults. Methods: The study was conducted in 20 villages of Qudi town in Jiyang county, Shandong province, China in 2003. Hepatitis B surface antigen (HBsAg), antibody against HBsAg (anti-HBs) and antibody against hepatitis B core antigen (anti-HBc) were tested for all healthy residents aged 15-40 years in these villages. Those who had no history of hepatitis B vaccination and were negative for all three indicators were divided into two groups randomly. Hepatitis B vaccine (HepB) was administrated to them on 0-6 month schedule or 0-1-6 month schedule respectively. Blood samples were obtained at one month after the last dose for each receipt and were quantitatively detected for anti-HBs. Finally a total of 629 participants completed HepB vaccination and anti-HBs testing, including 288 of two-dose group and 341 of three-dose group respectively. In 2015, an additional dose of HepB (challenge dose) was administrated to those who were negative for anti-HBs at follow-up (anti-HBs <10 mIU/ml) to evaluate the immune memory. A total of 93 blood samples, including 50 of two-dose group and 43 of three-dose group respectively, were drawn at 14 days after the challenge dose and anti-HBs was quantitatively detected. The anti-HBs geometric mean concentrations (GMCs) after the challenge dose were compared between the two groups. Multivariate linear regression model was built to find the independent risk factors associated with immune memory response (anti-HBs GMC after the challenge dose). Results: The challenge dose of HepB and post-challenge anti-HBs detection were completed among 93 participants. Totally 92 (98.92%, 92/93) participants were found holding immune memory (anti-HBs after the challenge dose was ≥10 mIU/ml). The immune memory positive rates were 100% (50/50) and 97.67% (42/43) in the two-dose group and three-dose group respectively and the corresponding anti-HBs GMC after challenge dose were 2 684.30 (95%CI: 1 721.71-4 185.08) mIU/ml and 3 527.48 (95%CI: 2 145.15-5 800.58) mIU/ml (P=0.410). The anti-HBs GMC after the challenge dose were 1 908.33 (95%CI: 1 190.01-3 060.27) mIU/ml, 4 004.20 (95%CI: 2 257.90-7 101.12) mIU/ml and 8 682.16 (95%CI: 5 813.94-12 965.36) mIU/ml among the participants whose anti-HBs titer was<4, 4-6 and 7-9 mIU/ml at follow-up, respectively (P=0.002). There was no correlation between immune schedule and anti-HBs GMC after the challenge dose; β (95%CI) was -0.07 (-0.34-0.20), P=0.601. Conclusion: The immune memory after primary hepatitis B vaccination lasted for at least 12 years among adults. The immune memory response was independently associated with ant-HBs titer at follow-up, but might be similar between 0-6 month schedule and 0-1-6 month schedule.
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Affiliation(s)
- L Zhang
- Immunization Department, Shandong Center for Disease Control and Prevention, Jinan 250014, China
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15
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Kong Q, Gagan J, Zhou M. A high-grade renal cell carcinoma with Somatic BRCA2 mutation. Pathol Int 2019; 69:432-433. [PMID: 31237028 DOI: 10.1111/pin.12801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 03/16/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Qingnuan Kong
- Department of Pathology, University of Texas Southwestern Medical Center in Dallas, Dallas, Texas, USA.,Department of Pathology, Qingdao Municipal Hospital, Qingdao, Shandong Province, China
| | - Jeffrey Gagan
- Department of Pathology, University of Texas Southwestern Medical Center in Dallas, Dallas, Texas, USA
| | - Ming Zhou
- Department of Pathology, University of Texas Southwestern Medical Center in Dallas, Dallas, Texas, USA
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16
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Kong Q, Zhang L, An P, Qi J, Yu X, Lu J, Ren X. Antifungal mechanisms of α‐terpineol and terpene‐4‐alcohol as the critical components of
Melaleuca alternifolia
oil in the inhibition of rot disease caused by
Aspergillus ochraceus
in postharvest grapes. J Appl Microbiol 2019; 126:1161-1174. [DOI: 10.1111/jam.14193] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/17/2018] [Accepted: 12/12/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Q. Kong
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - L. Zhang
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - P. An
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - J. Qi
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - X. Yu
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - J. Lu
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
| | - X. Ren
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
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17
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Kong Q, Yu X, Song D, Ren X. Effect of tricyclazole on morphology, virulence and gene expression of Aspergillus aculeatus for management of soft rot disease in peach. J Appl Microbiol 2018; 125:1827-1835. [PMID: 30129994 DOI: 10.1111/jam.14076] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/04/2018] [Accepted: 08/13/2018] [Indexed: 12/01/2022]
Abstract
AIMS Aspergillus aculeatus, a pathogen of peaches, can cause soft rot and lead to economic losses in agricultural production. However, studies on the prevention of soft rot caused by A. aculeatus have rarely been reported. Tricyclazole (TCZ) is a fungicide that has been widely used in disease prevention of various crops but the inhibitory mechanism of TCZ on A. aculeatus is unknown. Our aim was to determine the effects of TCZ on A. aculeatus. METHODS AND RESULTS In our study, TCZ inhibited the growth of fungal colonies when applied at 0·5-6 mmol l-1 and inhibited the production of melanin at 3 mmol l-1 . Conidia exposed to TCZ were less effective at causing the disease in inoculated samples, and electrical conductivity, divulgation of nucleic acids and proteins rose with increasing concentrations of TCZ. Microscopic results suggest that TCZ damages not only the cell wall but also the cell membrane. Results of qRT-PCR showed that TCZ had no significant effect on the regulation of genes coding for laccase, apoptosis and hypothetical protein; however, it significantly down-regulated genes coding for cellulase, chitinase and sterol. CONCLUSIONS Tricyclazole can influence the pathogenic ability of A. aculeatus by damaging the cell structure of hyphae and conidia, reducing the melanin production, and altering the expression of pathogenic-related gene. SIGNIFICANCE AND IMPACT OF THE STUDY The results explained the potential cause and mechanism TCZ produced in A. aculeatus. Our research offers scientific insights into future research interest relative to using TCZ in the treatment of soft rot caused by A. aculeatus.
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Affiliation(s)
- Q Kong
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - X Yu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - D Song
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - X Ren
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
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18
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Cai Y, Li XF, Kong Q. [Iron-refractory iron deficiency anemia in a child]. Zhonghua Er Ke Za Zhi 2018; 56:466-467. [PMID: 29886614 DOI: 10.3760/cma.j.issn.0578-1310.2018.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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19
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Mu Y, Jiao M, Zhao Y, Lv J, Wang J, Hao J, Zhang X, Kong Q, Liu Z. A method for tracing exogenous DNA uptake in live spermatozoa and embryos. Pol J Vet Sci 2018; 21:193-202. [PMID: 29624004 DOI: 10.24425/119038] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Sperm-mediated gene transfer(SMGT) is a simple method for producing transgenic animals. Due to the lack of repeatability in spermatozoa binding and internalization of exogenous DNA, the efficiency of SMGT is still low. Considering this point, the present work aims to develop a method for evaluating the spermatozoa capacity of binding exogenous DNA after co-incubation with DNA. The main approach is using a Cy5-labelled DNA to trace the exogenous DNA and assess the ability of spermatozoa to take up exogenous DNA. Using this technique, we found that the percentage of spermatozoa that are binding and uptaking DNA is higher at concentration of 10 μg/mL and 100 μg/mL than 5 μg/mL, 1 μg/mL and 0 μg/mL after incubation with Cy5-DNA for 30min at 37oC. After fertilization, the DNA fluorescence signal was also detected in zygotes in groups where spermatozoa were incubated with 10 μg/mL and 100 μg/mL of Cy5-DNA. These results showed a simple and convenient method to trace the exogenous DNA in spermatozoa and zygote when compared to conventional methods of labeling DNA during fertilization, resulting in a real-time observation of the exogenous DNA in spermatozoa and zygote.
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Affiliation(s)
- Y Mu
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - M Jiao
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - Y Zhao
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - J Lv
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - J Wang
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - J Hao
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - X Zhang
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - Q Kong
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
| | - Z Liu
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, 49 Mucai Street, Harbin, China
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20
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Kong Q, Yan BY, Lyu JJ, Feng Y, Liu JY, Song LZ, Xu Q, Zhang L, Xu AQ. [Prevalence of hepatitis A antibody among population covered by different hepatitis A immunization strategies in Shandong Province, 2015, China]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:480-483. [PMID: 28592089 DOI: 10.3760/cma.j.issn.0253-9624.2017.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate prevalence of hepatitis A antibody (anti-HAV IgG) among population covered by different hepatitis A vaccine immunization strategies in Shandong Province in 2015. Methods: In October 2015, according to the geographical location of Shandong Province, the stratified random sampling method was used to stratify the 17 municipal distrcts, and the random number table method was used for sampling, First, two eastern cites (Qingdao, Rizhao), two western cities (Liaocheng, Zaozhuang) and three central cities (Jinan, Zibo and Laiwu) were selected; secondly, one county was drawn from each city. Finally, the participants were divided into five age groups including ≤7 years (age group covered by free hepatitis A vaccination strategy), 8-11 years (age group who receive hepatitis A vaccination at their own charge), 12-24 years (age group covered by catch-up vaccination of hepatitis A), 25-34 years (age group born before hepatitis A vaccine was used) and ≥35 years (age group born before hepatitis A vaccine was used). After all the paticipants or their guardians asked and registered basic information such as age, gender, home address, blood samples were collected from them and anti-HAV IgG was detected by ELISA method. The positive rate of anti-HAV IgG and 95%CI were calculated. Results: A total of 1 654 participants were involved in the final analysis, including 856 males (51.75%) and 798 females (48.25%) whose mean age was (13.44±13.06) years. The crude positive rate of anti-HAV IgG was 91.41% (1 512/1 654, 95%CI: 89.96%-92.72%) and the age-adjusted rate was 90.93% (95%CI: 90.92%-90.94%). The positive rates of anti-HAV IgG was at the highest level in the age group of ≤7 years (95.90%, 95%CI: 95.88%-95.91%) and was at the lowest level in the age group of 25-34 years (83.23%, 95%CI: 83.21%-83.25%). The age-specific positive rates of anti-HAV IgG in eastern areas (96.79%, 95%CI: 96.78%-96.80%) were higher than those in both middle areas (86.66%, 95%CI: 86.65%-86.67%) and western areas (91.96%, 95%CI: 91.95%-91.97%). Conclusion: The positive rate of anti-HAV IgG was high among the general population in Shandong Province, but relatively low among young and middle-aged adults. Besides the routine immunization of hepatitis A among the children, more efforts should be taken for the prevention and control of hepatitis A among young and middle-aged adults in Shandong Province, especially in central and western areas.
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Affiliation(s)
- Q Kong
- School of Public Health, Shandong University, Jinan 250012, China
| | - B Y Yan
- Shandong Center for Disease Control and Prevention, Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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Gu H, Gao J, Guo W, Zhou Y, Kong Q. The expression of DNA methyltransferases3A is specifically downregulated in chorionic villi of early embryo growth arrest cases. Mol Med Rep 2017; 16:591-596. [PMID: 28560437 PMCID: PMC5482127 DOI: 10.3892/mmr.2017.6650] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Accepted: 03/14/2017] [Indexed: 01/18/2023] Open
Abstract
The aim of the present study was to investigate the expression pattern of four DNA methyltransferases (DNMT1, DNMT3A, DNMT3B and DNMT3L) in placenta chorionic villi of early embryo growth arrest patients. Chorionic villous specimens were obtained from 40 pregnant patients diagnosed with early embryo growth arrest and 40 healthy women who underwent selective pregnancy termination. Reverse transcription-quantitative polymerase chain reaction, immunohistochemistry and western blot analysis were performed to characterize the mRNA and protein expression of DNMTs in chorionic villous cells. It was identified, among the four DNMTs, DNMT3B presented the highest level of protein expression in both patient groups. Although the mRNA expressions of the four DNMTs were comparable, the DNMT3A protein was specifically downregulated in patients with early embryo growth arrest. Therefore, the current study suggests that an abnormal decrease in DNMT3A protein levels may be involved in the pathogenesis of early embryo growth arrest.
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Affiliation(s)
- Huating Gu
- Department of Physiology and Pathophysiology, Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Jing Gao
- Department of Reproductive Medicine Center, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266011, P.R. China
| | - Weiwei Guo
- Department of Pathology, Yantaishan Hospital, Affiliated to Medical College of Qingdao University, Yantai, Shandong 264001, P.R. China
| | - Yu Zhou
- Department of Physiology and Pathophysiology, Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Qingnuan Kong
- Department of Pathology, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266011, P.R. China
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Kong Q, Zhao HY, Tian K, Duan BF, Hu YY, Hu TS, Zhang YG, Zhang WD, Zhang FQ. [Molecular analysis of hemagglutinin and neuraminidase genes of avian influenza virus H5N6 subtype in the border of Yunnan Province from 2014 to 2015]. Zhonghua Yu Fang Yi Xue Za Zhi 2016; 50:1105-1107. [PMID: 28057117 DOI: 10.3760/cma.j.issn.0253-9624.2016.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Q Kong
- Faculty of Animal Science and Technology, Yunnan Agriculture University, Kunming 650201, China
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Li X, Xu L, Kong Q. Fusion-segment of high-grade Lumbar Spondylolisthesis: 2-year follow-up. Acta Orthop Belg 2016; 82:730-736. [PMID: 29182113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The clinical efficacy of reduction and fusion surgery and the suitable range of fusion-segment were evaluated in 12 pediatric patients treated for high-grade spondylolisthesis. Pre/post-operative clinical and radiological assessments were analyzed. A transient L5 nerve root paralysis was observed in one patient with L5 spondylolisthesis. No degenerative spondylolisthesis or adjacent segmental instability occurred above the fusion segments. In conclusion, we suggest that, in case of spondylolisthesis without severe structural scoliosis deformity or only associated with lumbosacral deformity, the posterior ligament complex should be protected in case of adjacent segmental instability and spondylolisthesis. If the spondylolisthesis is complicated with severe structural scoliosis deformity (Cobb ≥ 70°), in principle, the treatment should be performed according to the characteristics of the two diseases respectively.
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Kong Q, Han Z, Zuo X, Wei H, Huang W. Co-expression of pregnane X receptor and ATP-binding cassette sub-family B member 1 in peripheral blood: A prospective indicator for drug resistance prediction in non-small cell lung cancer. Oncol Lett 2016; 11:3033-3039. [PMID: 27123059 PMCID: PMC4840610 DOI: 10.3892/ol.2016.4369] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 02/11/2016] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to investigate the protein expression profiling of pregnane X receptor (PXR) and ATP-binding cassette sub-family B member 1 (ABCB1; also known as MDR1 or P-gp), present in the peripheral blood mononuclear cells (PBMCs) and cancerous tissues of cases of non-small cell lung cancer (NSCLC). Furthermore, the study aimed to assess the feasibility of predicting drug resistance through the medium of PBMCs. Of the subjects included in the study, 37 were histopathologically diagnosed with NSCLC and 17 were control patients without cancer. ThinPrep liquid-based smears with cytosine were applied in the examination of the PBMCs and proved quite effective in preserving the morphology and surface antigens of the lymphocytes. Measurements of expression levels in the PBMCs and cancerous tissues were obtained by immunohistochemical means. The results showed that, with the exception of the selective PXR expression in the normal lung tissues, the two types of proteins existed extensively throughout the PBMCs, normal tissues and tumors. Among the cancer patients, prior to chemotherapy, a significant rise in ABCB1 expression could be observed in the PBMCs, together with a similar rise in ABCB1 and PXR expression in the tumor specimens. Marked upregulation of the two proteins was detected in the PBMCs following 1 cycle of first-line chemotherapy. ABCB1 expression, correlated with PXR, persisted mostly in the PBMCs and tissue samples. When bound to and activated by ligands, PXR translocates from the cytoplasm to the nucleus of the cells. PXR subsequently binds to its DNA response elements as a heterodimer with the retinoid X receptor. A PXR translocation of moderate or low differentiation was identified in 3 cases of adenocarcinoma, which were co-expressing the two genes in the PBMCs prior to chemotherapy. During follow-up visits, tumor recurrence was observed within 3 months in 5 cases, which were characterized by PXR translocation. These findings indicate that the combined expression of PXR and ABCB1 in PBMCs may be used as a prospective indicator in diagnosis prior to histopathological diagnosis, and therefore may function as a novel biomarker for the prediction of drug resistance.
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Affiliation(s)
- Qingnuan Kong
- Department of Pathology, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Zenglei Han
- Department of Pathology, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Xiaoli Zuo
- Department of Pathology, Qingdao Hiser Hospital, Qingdao, Shandong 266011, P.R. China
| | - Hongjun Wei
- Department of Pathology, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Weiqing Huang
- Department of Pathology, Qingdao Municipal Hospital, Affiliated to Medical College of Qingdao University, Qingdao, Shandong 266071, P.R. China
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Kong Q, Sun J, Shen L, Cha J, Xu H, Jin H, Yu H, Ni X. Investigation on the effect of the ecological parameters on the prevalence of Laribacter hongkongensis in freshwater fish and in human. Indian J Med Microbiol 2016; 34:110-1. [DOI: 10.4103/0255-0857.167670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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He Z, Dong L, Zhang Y, Kong Q, Tan G, Zhou J. Metabolic syndrome in female migraine patients is associated with medication overuse headache: a clinic-based study in China. Eur J Neurol 2015; 22:1228-34. [PMID: 25981360 DOI: 10.1111/ene.12732] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 03/10/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Z. He
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
| | - L. Dong
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
| | - Y. Zhang
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
| | - Q. Kong
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
| | - G. Tan
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
| | - J. Zhou
- Department of Neurology; The First Affiliated Hospital of Chongqing Medical University; Chongqing China
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Kong Q, Wu G, Han L, Zhang Z, Du J, Sun W, Cao L. A transfection method of PS-asODNs targeting ANGPTL4 in multicellular structures of hepatocarcinoma cell line. Cancer Gene Ther 2015; 22:285-90. [PMID: 25908453 DOI: 10.1038/cgt.2015.22] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 03/17/2015] [Accepted: 03/19/2015] [Indexed: 12/11/2022]
Abstract
To find an efficient transfection method for metastatic cancer cells, we established a three-dimensional (3D) growth model for solid tumor cells to mimic the metastatic cancer cells in the vascular system and compared the efficiency of several transfection methods in vitro. We found that it was optimal to transfect two-dimensional cells in vitro and detach them for 3D growth 6 h later. The transfection efficiency of this method was high, and the results were reliable. This method can be used to deliver several types of small molecules into the 3D metastatic cell model. Using this method, we increased our understanding of why drugs that are effective in vitro cannot treat the disease in vivo. If this phenomenon occurs due to the resistance of the cells to the drug, other treatment agents for the disease must be identified. However, if this occurs because the agent cannot reach the cells inside the 3D aggregate, we can improve the delivery efficiency by using methods that target the agent to all cells. Briefly, the method introduced in this study will contribute to future research focusing on the 3D metastatic cell model as well as on drug development for various solid tumors.
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Affiliation(s)
- Q Kong
- 1] TaiShan Medical University, Taian, China [2] Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - G Wu
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - L Han
- Department of Immunology, School of Medicine, Shandong University, Jinan, China
| | - Z Zhang
- Institute of Basic Medicine, Shandong Academy of Medical Science, Jinan, China
| | - J Du
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - W Sun
- Department of Immunology, School of Medicine, Shandong University, Jinan, China
| | - L Cao
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
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Lu M, Kong Q, Xu X, Lu H, Lu Z, Yu W, Zuo B, Su J, Guo R. Evaluation of Apoptotic and Growth Inhibitory Activity of Phloretin in BGC823 Gastric Cancer Cell. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i1.5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Kong Q, Nakai Y, Kuroda N, Shiratsuchi A, Nagaosa K, Nakanishi Y. Peptidoglycan recognition protein-triggered induction of Escherichia coli gene in Drosophila melanogaster. J Biochem 2015; 157:507-17. [DOI: 10.1093/jb/mvv002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 01/07/2015] [Indexed: 11/14/2022] Open
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Lu M, Kong Q, Xu X, Lu H, Lu Z, Yu W, Zuo B, Su J, Guo R. Pectolinarigenin - A Flavonoid Compound from Cirsium Japonicum with Potential Anti-proliferation Activity in MCF- 7 Breast Cancer Cell. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i2.9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Teng Y, Gao M, Wang J, Kong Q, Hua H, Luo T, Jiang Y. Inhibition of eIF2α dephosphorylation enhances TRAIL-induced apoptosis in hepatoma cells. Cell Death Dis 2014; 5:e1060. [PMID: 24525736 PMCID: PMC3944242 DOI: 10.1038/cddis.2014.24] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 01/03/2014] [Accepted: 01/09/2014] [Indexed: 02/05/2023]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is an inducer of cancer cell death that holds promise in cancer therapy. Cancer cells are more susceptible than normal cells to the cell-death-inducing effects of TRAIL. However, a variety of cancer cells are resistant to TRAIL through complex mechanisms. Here, we investigate the effects of inhibition of eukaryotic initiation factor 2 subunit α (eIF2α) dephosphorylation on TRAIL-induced apoptosis in hepatoma cells. Treatment of hepatoma cells with salubrinal, an inhibitor of eIF2α dephosphorylation, enhances TRAIL-induced eIF2α phosphorylation, CCAAT/enhancer-binding protein homologous protein (CHOP) expression and caspase activation. Salubrinal enhances TRAIL-induced apoptosis, which could be abrogated by caspase inhibitor. Overexpression of phosphomimetic eIF2α (S51D) enhances TRAIL-induced CHOP expression, caspase 7 and PARP cleavage and apoptosis. By contrast, overexpression of phosphodeficient eIF2α (S51A) abrogates the stimulation of TRAIL-induced apoptosis by salubrinal. Moreover, knockdown of growth arrest and DNA damage-inducible protein 34 (GADD34), which recruits protein phosphatase 1 to dephosphorylate eIF2α, enhances TRAIL-induced eIF2α phosphorylation, CHOP expression, caspase activation and apoptosis. Furthermore, the sensitization of hepatoma cells to TRAIL by salubrinal is dependent on CHOP. Knockdown of CHOP abrogates the stimulation of TRAIL-induced caspase activation and apoptosis by salubrinal. Combination of salubrinal and TRAIL leads to increased expression of Bim, a CHOP-regulated proapoptotic protein. Bim knockdown blunts the stimulatory effect of salubrinal on TRAIL-induced apoptosis. Collectively, these findings suggest that inhibition of eIF2α dephosphorylation may lead to synthetic lethality in TRAIL-treated hepatoma cells.
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Affiliation(s)
- Y Teng
- State Key Laboratory of Biotherapy, Section of Oncogene, West China Hospital, Sichuan University, Chengdu, China
| | - M Gao
- State Key Laboratory of Biotherapy, Section of Oncogene, West China Hospital, Sichuan University, Chengdu, China
| | - J Wang
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Q Kong
- State Key Laboratory of Biotherapy, Section of Oncogene, West China Hospital, Sichuan University, Chengdu, China
| | - H Hua
- Laboratory of Stem Cell Biology, West China Hospital, Sichuan University, Chengdu, China
| | - T Luo
- Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Y Jiang
- State Key Laboratory of Biotherapy, Section of Oncogene, West China Hospital, Sichuan University, Chengdu, China
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Song L, Zhu Q, Liu T, Yu M, Xiao K, Kong Q, Zhao R, Li GD, Zhou Y. Ghrelin modulates lateral amygdala neuronal firing and blocks acquisition for conditioned taste aversion. PLoS One 2013; 8:e65422. [PMID: 23762368 PMCID: PMC3676403 DOI: 10.1371/journal.pone.0065422] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/24/2013] [Indexed: 12/31/2022] Open
Abstract
Ghrelin is an orexigenic brain-gut hormone promoting feeding and regulating energy metabolism in human and rodents. An increasing number of studies have reported that ghrelin and its identified receptor, the growth hormone secretagogue receptor 1a (GHS-R1a), produces remarkably wide and complex functions and biological effects on specific populations of neurons in central nervous system. In this study, we sought to explore the in vivo effects of acute ghrelin exposure on lateral amygdala (LA) neurons at the physiological and behavioral levels. In vivo extracellular single-unit recordings showed that ghrelin with the concentration of several nanomolars (nM) stimulated spontaneous firing of the LA neurons, an effect that was dose-dependent and could be blocked by co-application of a GHS-R1a antagonist D-Lys3-GHRP-6. We also found that D-Lys3-GHRP-6 inhibited spontaneous firing of the LA neurons in a dose-dependent manner, revealing that tonic GHS-R1a activity contributes to orchestrate the basal activity of the LA neurons. Behaviorally, we found that microinfusion of ghrelin (12 ng) into LA before training interfered with the acquisition of conditioned taste aversion (CTA) as tested at 24 h after conditioning. Pre-treatment with either purified IgG against GHS-R1a or GHS-R1a antagonist blocked ghrelin’s effect on CTA memory acquisition. Ghrelin (12 ng) had no effect on CTA memory consolidation or the expression of acquired CTA memory; neither did it affect the total liquid consumption of tested rats. Altogether, our data indicated that ghrelin locally infused into LA blocks acquisition of CTA and its modulation effects on neuronal firing may be involved in this process.
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Affiliation(s)
- Lige Song
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
- Department of Neurology, Medical College Affiliated General Hospital, Qingdao, Shandong, China
| | - Qianqian Zhu
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Tianwei Liu
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
- Research Institute of Cerebrovascular Diseases, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Ming Yu
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Kewei Xiao
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Qingnuan Kong
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Renliang Zhao
- Department of Neurology, Medical College Affiliated General Hospital, Qingdao, Shandong, China
| | - Guo-Dong Li
- Department of Anesthesiology, Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail: (YZ); (GDL)
| | - Yu Zhou
- Department of Physiology, Medical College of Qingdao University, Qingdao, Shandong, China
- * E-mail: (YZ); (GDL)
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Feng G, Li L, Liu H, Song Y, Huang F, Tu C, Shen B, Gong Q, Li T, Liu L, Zeng J, Kong Q, Yi M, Gupte M, Ma PX, Pei F. Hypoxia differentially regulates human nucleus pulposus and annulus fibrosus cell extracellular matrix production in 3D scaffolds. Osteoarthritis Cartilage 2013; 21:582-8. [PMID: 23313531 DOI: 10.1016/j.joca.2013.01.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 12/21/2012] [Accepted: 01/01/2013] [Indexed: 02/05/2023]
Abstract
OBJECTIVE We hypothesize that intervertebral disc (IVD) cells from distinct region respond differently to oxygen environment, and that IVD cells from patients with disc degeneration can benefit from hypoxia condition. Therefore, we aimed to determine the transcriptional response and extracellular matrix (ECM) production of nucleus pulposus (NP) and annulus fibrosus (AF) cells to different oxygen tension. METHOD Human NP and AF from degenerated IVD were seeded in 3D scaffolds and subjected to varying oxygen tension (2% and 20%) for 3 weeks. Changes in ECM were evaluated using quantitative real-time reverse transcriptase polymerase chain reaction, histological and immunohistological analyses. RESULTS Hypoxia significantly enhances NP cells phenotype, which resulted in greater production of sulfated glycosaminoglycan (GAG) and collagen type II within the constructs and the cells expressed higher levels of genes encoding NP ECM. A significantly stronger fluorescent signal for hypoxia-inducible factor (HIF-1α) as also found in the NP cells under the hypoxic than normoxic condition. However, there was little effect of hypoxia on the AF cells. CONCLUSIONS The NP and AF cells respond differently to hypoxia condition on the 3D scaffold, and hypoxia could enhance NP phenotype. When used in concert with appropriate scaffold material, human NP cells from degenerated disc could be regenerated for tissue engineering application.
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Affiliation(s)
- G Feng
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
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Wang D, Zhao Y, Zhang Y, Zhang T, Shang X, Wang J, Liu Y, Kong Q, Sun B, Mu L, Liu X, Wang G, Li H. Hypothermia protects against oxygen-glucose deprivation-induced neuronal injury by down-regulating the reverse transport of glutamate by astrocytes as mediated by neurons. Neuroscience 2013; 237:130-8. [PMID: 23402854 DOI: 10.1016/j.neuroscience.2013.01.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 01/25/2013] [Accepted: 01/27/2013] [Indexed: 11/29/2022]
Abstract
Glutamate is the major mediator of excitotoxic neuronal death following cerebral ischemia. Under severe ischemic conditions, glutamate transporters can functionally reverse to release glutamate, thereby inducing further neuronal injury. Hypothermia has been shown to protect neurons from brain ischemia. However, the mechanism(s) involved remain unclear. Therefore, the aim of this study was to investigate the mechanism(s) mediating glutamate release during brain ischemia-reperfusion injury under hypothermic conditions. Neuron/astrocyte co-cultures were exposed to oxygen-glucose deprivation (OGD) at various temperatures for 2h, and cell viability was assayed 12h after reoxygenation. PI and MAP-2 staining demonstrated that hypothermia significantly decreased neuronal injury. Furthermore, [(3)H]-glutamate uptake assays showed that hypothermia protected rat primary cortical cultures against OGD reoxygenation-induced injury. Protein levels of the astrocytic glutamate transporter, GLT-1, which is primarily responsible for the clearance of extracellular glutamate, were also found to be reduced in a temperature-dependent manner. In contrast, expression of GLT-1 in astrocyte-enriched cultures was found to significantly increase following the addition of neuron-conditioned medium maintained at 37 °C, and to a lesser extent with neuron-conditioned medium at 33 °C. In conclusion, the neuroprotective effects of hypothermia against brain ischemia-reperfusion injury involve down-regulation of astrocytic GLT-1, which mediates the reverse transport of glutamate. Moreover, this process may be regulated by molecules secreted by stressed neurons.
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Affiliation(s)
- D Wang
- Department of Neurobiology, Harbin Medical University Provincial Key Lab of Neurobiology, Harbin Medical University, Heilongjiang, China
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Satoh D, Kawata S, Takahashi K, Izumiyama T, Barada D, Ma Y, Kong Q, Wang P, Wang W, Li Y, Sheng Z, Klimo O, Limpouch J, Andreev A. Laser-plasma booster for ion post acceleration. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135917013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kawata S, Takahashi K, Satoh D, Barada D, Ma Y, Kong Q, Wang P, Wang W, Li Y, Sheng Z, Klimo O, Limpouch J, Andreev A. Efficient ion generation in laser-foil interaction. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135917012] [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: 11/14/2022] Open
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Yang F, Wu W, Yan Y, Pang Y, Kong Q. Treatment with a neutralising anti-murine interleukin-17 antibody after the onset of coxsackievirus B3-induced viral myocarditis reduces myocardium inflammation. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yang F, Wu WF, Yan YL, Pang Y, Kong Q. Expression of IL-23/Th17 Pathway in a Murine Model of Coxsackie Virus B3-Induced Viral Myocarditis. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shen L, Xiao M, Kong F, Brown M, Sun J, Kong Q, Cha J, Xiang H, Xu H, Jin H, Wei L, Ni X. Detection of Laribacter hongkongensis using species-specific duplex PCR assays targeting the 16S rRNA gene and the 16S-23S rRNA intergenic spacer region (ISR). J Appl Microbiol 2011; 111:625-30. [PMID: 21689224 DOI: 10.1111/j.1365-2672.2011.05083.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS For the rapid detection of Laribacter hongkongensis, which is associated with human community-acquired gastroenteritis and traveller's diarrhoea, we developed a duplex species-specific PCR assay. METHODS AND RESULTS Full-length of the 16S-23S rRNA intergenic spacer region (ISR) sequences of 52 L. hongkongensis isolates were obtained by PCR-based sequencing. Two species-specific primer pairs targeting 16S rRNA gene and ISR were designed for duplex PCR detection of L. hongkongensis. The L. hongkongensis species-specific duplex PCR assay showed 100% specificity, and the minimum detectable level was 2.1 × 10(-2) ng μl(-1) genomic DNA which corresponds to 5000 CFU ml(-1). CONCLUSIONS The high specificity and sensitivity of the assay make it suitable for rapid detection of L. hongkongensis. SIGNIFICANCE AND IMPACT OF THE STUDY This species-specific duplex PCR method provides a rapid, simple, and reliable alternative to conventional methods to identify L. hongkongensis and may have applications in both clinical and environmental microbiology.
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Affiliation(s)
- L Shen
- Hangzhou Center for Disease Control and Prevention, Jianqiao Town, Hangzhou, China
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Ni X, Sun J, Kong Q, Kong F, Brown M, Shen L, Cha J, Xiang H, Xu H, Jin H. Isolation of Laribacter hongkongensis from Little Egrets (Egretta garzetta) in Hangzhou, China. Lett Appl Microbiol 2011; 52:465-7. [DOI: 10.1111/j.1472-765x.2011.03024.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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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Yang F, Wu W, Yan Y, Kong Q, Pang Y. e0220 The involvement of IL-23/Th17 pathway in murin model of coxsackie virus B3-induced viral myocarditis. Heart 2010. [DOI: 10.1136/hrt.2010.208967.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yang F, Wu W, Yan Y, Kong Q, Pang Y. e0216 The expression and role of interleukin-23 in mice virus myocarditis. Heart 2010. [DOI: 10.1136/hrt.2010.208967.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Chen Y, Kong Q. Nuclear translocation of telomerase reverse transcriptase: a critical process in chemical induced hepatocellular carcinogenesis. Neoplasma 2010; 57:222-7. [PMID: 20353272 DOI: 10.4149/neo_2010_03_222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Telomerase, a ribonuclearprotein complex, functions not only in cancer development but also in apoptosis, and senescence. As a catalytic subunit of telomerase, telomerase reverse transcriptase (TERT) has been confirmed to regulate telomerase activity in a rate-limiting manner. Although a lot of work has been done, the dynamic state of TERT protein and the relationship with telomerase have not been delineated systematically in cancer development. The purpose of this study was to do such an exploration. To investigate the role of TERT in the in vivo carcinogenesis, we performed immunofluorescence and Western blot analysis, respectively, to detect the alteration of TERT status as well as telomeric repeat amplification protocol (TRAP) assay to detect telomerase activity in diethyl nitrosoamine (DENA) induced rat hepatocellular carcinoma (HCC). The course of cancer development was divided into three main stages, which were inflammation ( <12 weeks), hepatocirrhosis (15 weeks), and hepatocarcinoma (18-21 weeks). In normal liver and its early inflammatory stage, concomitant with a weak positive TERT signal, which was detected exclusively in the cytoplasm, telomerase activity was very low at this stage. However, in late hepatocirrhosis and particularly cancer stage, high levels of TERT expression (P = 0.044 and P = 0.001, respectively) and telomerase activity (P = 0.02 and P = 0.01, respectively) were observed following TERT nuclear translocation. Our data suggest that TERT protein might regulate telomerase activity. TERT translocation from cytoplasm to the nucleus might be a turning point in cancer development. Therefore, TERT translocation might be more useful than TERT expression level and telomerase activity in predicting the progression of HCC.
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Affiliation(s)
- Y Chen
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang City, China
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Abstract
UNLABELLED Abnormal centrosome frequently found in human cancer is a major cause of mitotic defects and chromosome instability in cancer cells. Centrosome duplication is controlled in a cell cycle-specific manner, whereas cancer cells with dysregulation of centrosome duplication can survive and reenter the cell cycle through defective cell cycle checkpoint systems. Although numerous studies showed that centrosome amplification can be readily induced by loss or mutational inactivation of p53, however, the role of centrosomally localized p53 in the regulation of centrosome duplication had been enigma. To investigate the role of centrosome and p53 in the in vivo carcinogenesis, we performed immunofluorescence and Western blot analysis, respectively, to detect the alteration of centrosome and p53 status as well as immunohistochemical assay to detect cell proliferation in diethyl nitrosoamine (DENA) induced rat hepatocellular carcinoma (HCC). The frequencies of the centrosome abnormalities in HCC lesions were significantly higher than that of in their preneoplasitc counterparts as well as cell proliferation expression profile. Intriguingly, there was no correlation between centrosome abnormalities and cell proliferation. As for p53, the level of p53 increased in inflammation lesion, but decreased in hepatocirrhosis lesion, even undetectable in HCC lesion. These findings may imply that in inflammatory lesions aberration centrosome occurred irrespective of p53 background. However, the significantly increased percentage of cells with abnormal centrosome in hepatocirrhosis, particularly in HCC lesion concomitant with p53 inactivation and increased cell proliferation rate might synergistically contribute to carcinogenesis. Taken together, centrosome abnormalities were an early event prior to p53 inactivation in the time course of carcinogenesis, suggesting that p53 inactivation may not be the cause of centrosome aberration and centrosome may be a susceptible organelle responding to cellular insults. KEYWORDS centrosome, p53, hepatocellular carcinoma, cell proliferation.
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Affiliation(s)
- Y Chen
- School of Life Science and Technology, Henan Institute of Science and Technology, PR China
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Chen Y, Deng W, Zhu H, Li J, Xu Y, Dai X, Jia C, Kong Q, Huang L, Liu Y, Ma C, Xiao C, Liu Y, Li Q, Bezard E, Qin C. The pathologic features of neurocutaneous melanosis in a cynomolgus macaque. Vet Pathol 2009; 46:773-5. [PMID: 19276048 DOI: 10.1354/vp.08-vp-0243-q-bc] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Neurocutaneous melanosis (NCM) is a rare phakomatosis characterized by proliferation of melanin-producing cells in both the skin and the brain. In this study, we describe the clinical and pathologic features of NCM in a 4.5-year-old female cynomolgus macaque. Histopathologically, skin lesions showed foci of nests and cords of pigmented cells in the dermis similar to blue nevi in humans. In the brain, focal pigmented cell infiltration was observed in the connective tissue under the leptomeninges and in the brain parenchyma. The pigmented cell was moderately reactive with a pan-melanoma antibody (melanoma(pan)) in the skin. In the brain, the pigmented cell was moderately to strongly positive for melanoma(pan) in subleptomeningeal areas and in the cerebral cortex. Melanosomes were observed in pigmented cells in the brain by electron microscopic examination. Based on the histologic, immunohistochemical, and electron microscopic results, the diagnosis of NCM was made. This case is possibly the first report of the condition in animals.
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Affiliation(s)
- Y Chen
- Department of Pathology, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 5, Panjiayuan, Nanli, Chaoyang District, Beijing, 100021, People's Republic of China
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Wang Q, Sun B, Wang D, Ji Y, Kong Q, Wang G, Wang J, Zhao W, Jin L, Li H. Murine bone marrow mesenchymal stem cells cause mature dendritic cells to promote T-cell tolerance. Scand J Immunol 2008; 68:607-15. [PMID: 18959624 DOI: 10.1111/j.1365-3083.2008.02180.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bone mesenchymal stem cells (BMSC) are attractive not only in regenerative medicine, but also for the treatment of autoimmune diseases and graft-versus-host disease. BMSC also play a role in enabling alloantigen tolerance. An in-depth mechanistic understanding of this phenomenon of tolerance could lead to novel cell-based therapies for autoimmune disease. We demonstrate here that co-culture of mature dendritic cells (DC) with BMSC in a transwell system (BMSC-DC) downregulated expression of the maturation marker, CD83 and CD80/86 co-stimulatory molecules on DC, while increasing their endocytic activity. This resulted in defective antigen presentation and co-stimulatory capacity of mature DC. Functionally, BMSC-DC have impaired T-cell stimulatory activity in a mixed lymphocyte reaction and orchestrate a shift from predominantly pro-inflammatory T-helper (Th)-1 to anti-inflammatory Th2 cells. While the expression of MHC II, CD80 and CD86 were upregulated on BMSC co-cultured with DC, these BMSC lacked the ability to stimulate T-cell proliferation. Taken together, these data suggest that the interaction between BMSC and DC modulates the immunoregulatory function of these cells in a coordinated manner, effectively skewing the immune response towards T-cell tolerance.
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Affiliation(s)
- Q Wang
- Department of Neurobiology, Harbin Medical University Provincial Key Lad of Neurobiology, Harbin, Heilongjiang, China
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Jia R, Tai F, An S, Broders H, Ding X, Kong Q, Zhao L, Zhang H. Effects of neonatal oxytocin treatment on aggression and neural activities in mandarin voles. Physiol Behav 2008; 95:56-62. [DOI: 10.1016/j.physbeh.2008.04.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Revised: 04/04/2008] [Accepted: 04/09/2008] [Indexed: 11/25/2022]
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Nielsen M, Christensen M, Haldrup K, Harrit N, Feidenhans'l R, Kong Q, Cammarata M, Manuela L, Wulff M. Time-resolved X-ray scattering of an electronically excited state in metal complexes in solution. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308095494] [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: 11/10/2022] Open
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