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Rubaihayo J, Mbona Tumwesigye N, Birungi J. Temporal and Spatial Distribution of Opportunistic Infections Associated with the Human Immunodeficiency Virus (HIV) in Uganda. Infect Dis (Lond) 2022. [DOI: 10.5772/intechopen.105344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The human immunodeficiency virus (HIV) remains one of the greatest challenges of the twenty-first century in the absence of an effective vaccine or cure. It is estimated globally that close to 38 million people are currently living with the HIV virus and more than 36 million have succumbed to this deadly virus from the time the first case was reported in early 1980s. The virus degrades the human body immunity and makes it more vulnerable to different kinds of opportunistic infections (OIs). However, with the introduction of highly active anti-retroviral therapy (HAART) in 2003, the pattern and frequency of OIs has been progressively changing though with variations in the different parts of the World. So this chapter discusses the temporal and spatial patterns of OIs in Uganda.
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Kellogg C, Kouznetsova VL, Tsigelny IF. Implications of viral infection in cancer development. Biochim Biophys Acta Rev Cancer 2021; 1876:188622. [PMID: 34478803 DOI: 10.1016/j.bbcan.2021.188622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 12/12/2022]
Abstract
Since the identification of the first human oncogenic virus in 1964, viruses have been studied for their potential role in aiding the development of cancer. Through the modulation of cellular pathways associated with proliferation, immortalization, and inflammation, viral proteins can mimic the effect of driver mutations and contribute to transformation. Aside from the modulation of signaling pathways, the insertion of viral DNA into the host genome and the deregulation of cellular miRNAs represent two additional mechanisms implicated in viral oncogenesis. In this review, we will discuss the role of twelve different viruses on cancer development and how these viruses utilize the abovementioned mechanisms to influence oncogenesis. The identification of specific mechanisms behind viral transformation of human cells could further elucidate the process behind cancer development.
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Affiliation(s)
- Caroline Kellogg
- REHS Program, San Diego Supercomputer Center, University of California, San Diego, CA, USA
| | - Valentina L Kouznetsova
- San Diego Supercomputer Center, University of California, San Diego, CA, USA; BiAna San Diego, CA, USA
| | - Igor F Tsigelny
- San Diego Supercomputer Center, University of California, San Diego, CA, USA; Department of Neurosciences, University of California, San Diego, CA, USA; BiAna San Diego, CA, USA.
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Bilski K, Dobruch J, Kozikowski M, Skrzypczyk MA, Oszczudłowski M, Ostrowski J. Urobiome in Gender-Related Diversities of Bladder Cancer. Int J Mol Sci 2020; 21:ijms21124488. [PMID: 32599810 PMCID: PMC7349933 DOI: 10.3390/ijms21124488] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 12/18/2022] Open
Abstract
Bladder cancer (BC) remains the most common malignancy of urinary tract. Sex-related differences in BC epidemiology, diagnosis, therapy, and outcomes have been reported. Throughout the recent years, extensive research has been devoted to genetic and molecular alterations in BC. Apart from the molecular background, another related concept which has been speculated to contribute to gender diversities in BC is the role of urinary pathogens in bladder carcinogenesis. Microbiome studies, fueled by the availability of high-throughput DNA-based techniques, have shown that perturbation in the microbiome is associated with various human diseases. The aim of this review is to comprehensively analyze the current literature according to sex-related differences in the microbiome composition in BC.
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Affiliation(s)
- Konrad Bilski
- Department of Urology, Centre of Postgraduate Medical Education, Independent Public Hospital of Professor W. Orlowski, 00-416 Warsaw, Poland; (J.D.); (M.K.); (M.A.S.); (M.O.)
- Correspondence:
| | - Jakub Dobruch
- Department of Urology, Centre of Postgraduate Medical Education, Independent Public Hospital of Professor W. Orlowski, 00-416 Warsaw, Poland; (J.D.); (M.K.); (M.A.S.); (M.O.)
| | - Mieszko Kozikowski
- Department of Urology, Centre of Postgraduate Medical Education, Independent Public Hospital of Professor W. Orlowski, 00-416 Warsaw, Poland; (J.D.); (M.K.); (M.A.S.); (M.O.)
| | - Michał A. Skrzypczyk
- Department of Urology, Centre of Postgraduate Medical Education, Independent Public Hospital of Professor W. Orlowski, 00-416 Warsaw, Poland; (J.D.); (M.K.); (M.A.S.); (M.O.)
| | - Maciej Oszczudłowski
- Department of Urology, Centre of Postgraduate Medical Education, Independent Public Hospital of Professor W. Orlowski, 00-416 Warsaw, Poland; (J.D.); (M.K.); (M.A.S.); (M.O.)
| | - Jerzy Ostrowski
- Department of Genetics, Maria Sklodowska-Curie Institute-Oncology Center, 02-781 Warsaw, Poland;
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Thissen JB, Be NA, McLoughlin K, Gardner S, Rack PG, Shapero MH, Rowland RRR, Slezak T, Jaing CJ. Axiom Microbiome Array, the next generation microarray for high-throughput pathogen and microbiome analysis. PLoS One 2019; 14:e0212045. [PMID: 30735540 PMCID: PMC6368325 DOI: 10.1371/journal.pone.0212045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 01/25/2019] [Indexed: 12/23/2022] Open
Abstract
Microarrays have proven to be useful in rapid detection of many viruses and bacteria. Pathogen detection microarrays have been used to diagnose viral and bacterial infections in clinical samples and to evaluate the safety of biological drug materials. In this study, the Axiom Microbiome Array was evaluated to determine its sensitivity, specificity and utility in microbiome analysis of veterinary clinical samples. The array contains probes designed to detect more than 12,000 species of viruses, bacteria, fungi, protozoa and archaea, yielding the most comprehensive microbial detection platform built to date. The array was able to detect Shigella and Aspergillus at 100 genome copies, and vaccinia virus DNA at 1,000 genome copies. The Axiom Microbiome Array made correct species-level calls in mock microbial community samples. When tested against serum, tissue, and fecal samples from pigs experimentally co-infected with porcine reproductive and respiratory syndrome virus and porcine circovirus type 2, the microarray correctly detected these two viruses and other common viral and bacterial microbiome species. This cost-effective and high-throughput microarray is an efficient tool to rapidly analyze large numbers of clinical and environmental samples for the presence of multiple viral and bacterial pathogens.
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Affiliation(s)
- James B. Thissen
- Physical & Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Nicholas A. Be
- Physical & Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Kevin McLoughlin
- Computation Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Shea Gardner
- Computation Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Paul G. Rack
- Thermo Fisher Scientific, Santa Clara, California, United States of America
| | - Michael H. Shapero
- Thermo Fisher Scientific, Santa Clara, California, United States of America
| | - Raymond R. R. Rowland
- Department of Diagnostic Medicine and Pathobiology, Kansas State University, Manhattan, Kansas, United States of America
| | - Tom Slezak
- Computation Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
| | - Crystal J. Jaing
- Physical & Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, United States of America
- * E-mail:
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Kim Y, Pierce CM, Robinson LA. Impact of viral presence in tumor on gene expression in non-small cell lung cancer. BMC Cancer 2018; 18:843. [PMID: 30134863 PMCID: PMC6106745 DOI: 10.1186/s12885-018-4748-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 08/14/2018] [Indexed: 12/26/2022] Open
Abstract
Background In our recent study, most non-small-lung cancer (NSCLC) tumor specimens harbored viral DNA but it was absent in non-neoplastic lung. However, their targets and roles in the tumor cells remain poorly understood. We analyzed gene expression microarrays to identify genes and pathways differentially altered between virus-infected and uninfected NSCLC tumors. Methods Gene expression microarrays of 30 primary and 9 metastatic NSCLC patients were preprocessed through a series of quality control analyses. Linear Models for Microarray Analysis and Gene Set Enrichment Analysis were used to assess differential expression. Results Various genes and gene sets had significantly altered expressions between virus-infected and uninfected NSCLC tumors. Notably, 22 genes on the viral carcinogenesis pathway were significantly overexpressed in virus-infected primary tumors, along with three oncogenic gene sets. A total of 12 genes, as well as seven oncogenic and 133 immunologic gene sets, were differentially altered in squamous cell carcinomas, depending on the virus. In adenocarcinoma, 14 differentially expressed genes (DEGs) were identified, but no oncogenic and immunogenic gene sets were significantly altered. In bronchioloalveolar carcinoma, several genes were highly overexpressed in virus-infected specimens, but not statistically significant. Only five of 69 DEGs (7.2%) from metastatic tumor analysis overlapped with 1527 DEGs from the primary tumor analysis, indicating differences in host cellular targets and the viral impact between primary and metastatic NSCLC. Conclusions The differentially expressed genes and gene sets were distinctive among infected viral types, histological subtypes, and metastatic disease status of NSCLC. These results support the hypothesis that tumor viruses play a role in NSCLC by regulating host genes in tumor cells during NSCLC differentiation and progression. Electronic supplementary material The online version of this article (10.1186/s12885-018-4748-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Youngchul Kim
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, 33612-9416, Florida, USA.
| | - Christine M Pierce
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, 33612-9416, Florida, USA.,Center for Immunization and Infection Research in Cancer, Moffitt Cancer Center, Tampa, 33612-9416, Florida, USA.,Division of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida, 33612-9416, USA
| | - Lary A Robinson
- Center for Immunization and Infection Research in Cancer, Moffitt Cancer Center, Tampa, 33612-9416, Florida, USA.,Division of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida, 33612-9416, USA
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Wang Y, Zhang H, Li X, Chen W. Differential expression profile analysis of lncRNA UCA1α regulated mRNAs in bladder cancer. J Cell Biochem 2018; 119:1841-1854. [PMID: 28815726 DOI: 10.1002/jcb.26345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 08/08/2017] [Indexed: 11/13/2023]
Abstract
Urothelial carcinoma associated 1α (UCA1α) is a novel long non-coding RNA (lncRNA) that regulates bladder cancer proliferation, migration, and invasion. The target genes of UCA1α have, however, not been identified. To address this, a pCDNA3.1(+)-UCA1α over-expression vector was transfected into UM-UC-2 bladder cancer cells. Genes differentially expressed between pCDNA3.1(+)-UCA1α and pCDNA3.1(+) transfected cell were then detected by microarray and bioinformatics analysis. A total of 71 differentially expressed genes were identified, including 52 up-regulated genes and 19 down-regulated genes. As expected, the lncRNA UCA1α expression level was significantly increased when compared to that of pCDNA3.1(+) transfected cells. The five most significantly up-regulated and five most significantly down-regulated genes were selected, and their expression levels were also assessed by real time quantitative polymerase chain reaction and Western blot. The mRNA and protein expression levels of FOXI3 and GSTA3 were found to be significantly increased, and those of MED18 and TEX101 were found to be significantly decreased. Gene ontology (GO) clustering identified several significant biological processes, cellular components, and molecular functions, associated with lncRNA UCA1α over-expression. The differentially expressed genes were involved in several significant pathways as shown by Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway clustering. Cell proliferation activity was significantly increased following overexpression of lncRNA UCA1α increasing over culture time. The present study identifies, for the first time, potential target genes for lncRNA UCA1α in bladder cancer, and provides a significant reference for studying the role of lncRNA UCA1α in bladder cancer.
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Affiliation(s)
- Yu Wang
- Medical Experiment Center, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Hong Zhang
- Medical Experiment Center, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Xu Li
- Center for Translational Medicine, The First Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Wei Chen
- Center for Translational Medicine, The First Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, China
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Rubaihayo J, Tumwesigye NM, Konde-Lule J, Wamani H, Nakku-Joloba E, Makumbi F. Frequency and distribution patterns of opportunistic infections associated with HIV/AIDS in Uganda. BMC Res Notes 2016; 9:501. [PMID: 27927247 PMCID: PMC5142427 DOI: 10.1186/s13104-016-2317-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 12/01/2016] [Indexed: 11/24/2022] Open
Abstract
Background We conducted a study to assess the frequency and distribution patterns of selected opportunistic infections (OIs) and opportunistic cancers (OCs) in different geographical areas before and after HAART in Uganda. Methods This was a cross-sectional serial review of observation data for adult HIV positive patients (≥15 years) enrolled with the AIDS support organization (TASO) in Uganda covering the period from January 2001 to December 2013. Both AIDS defining OIs/OCs and non-AIDS defining OIs were analyzed. The study period was structured into three time periods: “pre- HAART” (2001–2003), “early-HAART” (2004–2008) and “late-HAART” (2009–2013). Descriptive statistics were used to summarize the data by time period, age, gender and geographical location. Chi squared test used to test the significance of the differences in proportions. Results A total of 108,619 HIV positive patients were included in the analysis. 64% (64,240) were female with median age of 33 years (IQR 27–40). The most frequent OIs before HAART were oral candida (34.6%) diarrhoeal infection (<1 month) (30.6%), geohelminths (26.5%), Mycobacterium tuberculosis (TB) (17.7%), malaria (15.1%) and bacterial pneumonia (11.2%). In early HAART (2004–2008), the most frequent OIs were geohelminths (32.4%), diarrhoeal infection (25.6%), TB (18.2%) and oral candida (18.1%). In late HAART (2009–2013), the most frequent OIs were geohelminths (23.5%) and diarrhoeal infection (14.3%). By gender, prevalence was consistently higher in women (p < 0.05) before and after HAART for geohelminths, candidiasis, diarrhoeal infection, bacterial pneumonia and genital ulcer disease but consistently higher in men for TB and Kaposi’s sarcoma (p < 0.05). By age, prevalence was consistently higher in older age groups (>30 years) before and after HAART for oral candida and TB (p < 0.05) and higher in young age groups (<30 years) for malaria and genital ulcers (p < 0.05). By geographical location, prevalence was consistently higher in Eastern and Northern Uganda before and after HAART for diarrheal infection and geohelminths (p < 0.0001). Conclusions The frequency and pattern of OIs before and after HAART differs by gender, age and geographical location. Prevalence of geohelminths and diarrhea infection(<1 month) remains high especially in Northern and Eastern Uganda even after HAART and should therefore be given special attention in HIV/AIDS care programmes in these settings.
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Affiliation(s)
- John Rubaihayo
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda. .,Department of Public Health, School of Health Sciences, Mountains of the Moon University, P.O. Box 837, Fort Portal, Uganda.
| | - Nazarius M Tumwesigye
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Joseph Konde-Lule
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Henry Wamani
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Edith Nakku-Joloba
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Fredrick Makumbi
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
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Lee S, Jang J, Jeon H, Lee J, Yoo SM, Park J, Lee MS. Latent Kaposi's sarcoma-associated herpesvirus infection in bladder cancer cells promotes drug resistance by reducing reactive oxygen species. J Microbiol 2016; 54:782-788. [PMID: 27796928 DOI: 10.1007/s12275-016-6388-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 09/19/2016] [Accepted: 09/19/2016] [Indexed: 02/05/2023]
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV) is the major etiologic agent of Kaposi's sarcoma, primary effusion lymphoma, and multicentric Castleman's disease. Recent studies have indicated that KSHV can be detected at high frequency in patient-derived bladder cancer tissue and might be associated with the pathogenesis of bladder cancer. Bladder cancer is the second most common cancer of the genitourinary tract, and it has a high rate of recurrence. Because drug resistance is closely related to chemotherapy failure and cancer recurrence, we investigated whether KSHV infection is associated with drug resistance of bladder cancer cells. Some KSHV-infected bladder cancer cell lines showed resistance to an anti-cancer drug, cisplatin, possibly as a result of down-regulation of reactive oxygen species. Additionally, drug resistance acquired from KSHV infection could partly be overcome by HDAC1 inhibitors. Taken together, the data suggest the possible role of KSHV in chemo-resistant bladder cancer, and indicate the therapeutic potential of HDAC1 inhibitors in drug-resistant bladder cancers associated with KSHV infection.
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Affiliation(s)
- Suhyuk Lee
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Jaehyuk Jang
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Hyungtaek Jeon
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Jisu Lee
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Seung-Min Yoo
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Jinsung Park
- Department of Urology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea
| | - Myung-Shin Lee
- Department of Microbiology and Immunology, Eulji University School of Medicine, Daejeon, 34824, Republic of Korea.
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Robinson LA, Jaing CJ, Pierce Campbell C, Magliocco A, Xiong Y, Magliocco G, Thissen JB, Antonia S. Molecular evidence of viral DNA in non-small cell lung cancer and non-neoplastic lung. Br J Cancer 2016; 115:497-504. [PMID: 27415011 PMCID: PMC4985355 DOI: 10.1038/bjc.2016.213] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 06/16/2016] [Accepted: 06/20/2016] [Indexed: 01/02/2023] Open
Abstract
Background: Although ∼20% of human cancers are caused by microorganisms, only suspicion exists for a microbial cause of lung cancer. Potential infectious agents were investigated in non-small cell lung cancer (NSCLC) and non-neoplastic lung. Methods: Seventy NSCLC tumours (33 squamous cell carcinomas, 17 adenocarcinomas, 10 adenocarcinomas with lepidic spread, and 10 oligometastases) and 10 non-neoplastic lung specimens were evaluated for molecular evidence of microorganisms. Tissues were subjected to the Lawrence Livermore Microbial Detection Array, an oncovirus panel of the International Agency for Research on Cancer, and human papillomavirus (HPV) genotyping. Associations were examined between microbial prevalence, clinical characteristics, and p16 and EGFR expression. Results: Retroviral DNA was observed in 85% squamous cell carcinomas, 47% adenocarcinomas, and 10% adenocarcinomas with lepidic spread. Human papillomavirus DNA was found in 69% of squamous cell carcinomas with 30% containing high-risk HPV types. No significant viral DNA was detected in non-neoplastic lung. Patients with tumours containing viral DNA experienced improved long-term survival compared with patients with viral DNA-negative tumours. Conclusions: Most squamous cell carcinomas and adenocarcinomas contained retroviral DNA and one-third of squamous cell carcinomas contained high-risk HPV DNA. Viral DNA was absent in non-neoplastic lung. Trial results encourage further study of the viral contribution to lung carcinogenesis.
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Affiliation(s)
- Lary A Robinson
- Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA.,Center for Infection Research in Cancer (CIRC), Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
| | - Crystal J Jaing
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94559-9698, USA
| | - Christine Pierce Campbell
- Center for Infection Research in Cancer (CIRC), Moffitt Cancer Center, Tampa, Florida 33612-9416, USA.,Department of Epidemiology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
| | - Anthony Magliocco
- Department of Pathology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
| | - Yin Xiong
- Department of Pathology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
| | - Genevra Magliocco
- Department of Pathology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
| | - James B Thissen
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94559-9698, USA
| | - Scott Antonia
- Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, Florida 33612-9416, USA
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Lee J, Jeon H, Yoo SM, Park J, Lee MS. The role of Kaposi's sarcoma-associated herpesvirus infection in the proliferation of human bladder cancer cells. Tumour Biol 2015; 37:2587-96. [PMID: 26392109 DOI: 10.1007/s13277-015-4096-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 09/14/2015] [Indexed: 01/05/2023] Open
Abstract
Existing evidence suggests a possible role of viruses in human bladder cancer development. Recently, Kaposi's sarcoma-associated herpesvirus (KSHV) was reported to be the most frequently detected virus in bladder cancer tissue from Croatian patients on screening with the Lawrence Livermore Microbial Detection Array. In the current study, to investigate the functional roles of KSHV in bladder cancer, five bladder cancer cell lines were infected with KSHV and their tumour progression-associated changes investigated. Four KSHV-infected bladder cancer cell lines were established; two invasive bladder cancer cell lines showed higher proliferation rates than uninfected cells. Additionally, these KSHV-infected invasive bladder cancer cells showed a greater number of colonies, which were also significantly larger than those of uninfected cells, in a soft agar colony formation assay. cDNA microarray analysis showed that various genes associated with cell proliferation and cancer development were upregulated in these KSHV-infected bladder cancer cells. Taken together, we suggest that KSHV infection affects the proliferation of a subset of invasive bladder cancer cells and may therefore play a role in their oncogenic progression. Further studies are required to elucidate the exact mechanism used by KSHV to promote bladder cancer progression.
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Affiliation(s)
- Jisu Lee
- Department of Microbiology and Immunology, Eulji University School of Medicine, 143-5 Yongdu-dong, Jung-gu, Daejeon, South Korea
| | - Hyungtaek Jeon
- Department of Microbiology and Immunology, Eulji University School of Medicine, 143-5 Yongdu-dong, Jung-gu, Daejeon, South Korea
| | - Seung-Min Yoo
- Department of Microbiology and Immunology, Eulji University School of Medicine, 143-5 Yongdu-dong, Jung-gu, Daejeon, South Korea
| | - Jinsung Park
- Department of Urology, Eulji University Hospital, Eulji University School of Medicine, 1306 Dunsan-dong, Seo-gu, Daejeon, South Korea.
| | - Myung-Shin Lee
- Department of Microbiology and Immunology, Eulji University School of Medicine, 143-5 Yongdu-dong, Jung-gu, Daejeon, South Korea.
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Molecular events in muscle-invasive bladder cancer development. Bladder Cancer 2015. [DOI: 10.1002/9781118674826.ch29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rubaihayo J, Tumwesigye NM, Konde-Lule J. Trends in prevalence of diarrhoea, Kaposi's sarcoma, bacterial pneumonia, malaria and geohelminths among HIV positive individuals in Uganda. AIDS Res Ther 2015; 12:20. [PMID: 26075005 PMCID: PMC4465613 DOI: 10.1186/s12981-015-0060-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 06/01/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Trends in prevalence of opportunistic infections (OIs) associated with the human immunodeficiency virus (HIV) in resource poor settings have previously not been well documented. The objective of this study was to describe the trends in prevalence of Diarrhoea, Bacterial pneumonia, Kaposi's sarcoma, Malaria and Geohelminths among HIV positive individuals over a 12 year period in Uganda. METHODS Observation data for 5972 HIV positive individuals enrolled with the AIDS support organisation (TASO) in Uganda were analysed. Study participants were drawn from three HIV clinics located in different geographical areas of Uganda and followed from January 2002 to December 2013. The prevalence trends for the above OIs were plotted using the Box Jenkins moving average technique. X (2)-test for trend was used to test for the significance of the trends and Pearson's correlation coefficient used to test for the strength of linear relationship between OI prevalence and calendar time. Mixed effect linear regression was used to estimate average monthly change in prevalence with monthly variation modelled as a random effect. RESULTS A total of 204,871 monthly medical reports were retrieved and analysed. 73 % (4301/5972) were female with a median age of 32 years (inter-quartile range 26-39). Overall, significant decreasing mean annual prevalence trends (p < 0.05, X(2) trend) were observed for Diarrhoea (<1 month) with Pearson's correlation coefficient (r = -0.89), Malaria (r = -0.75), Bacterial Pneumonia (r = -0.52), and Geohelminth (r = -0.32). Non-significant increasing mean annual prevalence trend was observed for Kaposis sarcoma (p = 0.20, X(2) trend; r = +0.26). After adjusting for age, sex and clinic in a mixed effects linear regression model, average monthly prevalence declined significantly at a rate of 0.4 % for Kaposis sarcoma, 0.3 % for Geohelminths, 2 % for Malaria, 1 % for Bacterial Pneumonia and 3 % for Diarrhoea(<1 month). However, the rate of decline per month differed significantly (p < 0.05) by HIV clinic for Diarrhoea (<1 month), and age, sex and clinic for malaria. CONCLUSIONS AND RECOMMENDATIONS Overall, decreasing trends were observed in the above OIs. However the trends differed significantly by OI, geographical location and demographic characteristics. There is urgent need to integrate interventions targeting malaria and geohelminths in HIV programmes.
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Tellez J, Jaing C, Wang J, Green R, Chen M. Detection of Epstein-Barr virus (EBV) in human lymphoma tissue by a novel microbial detection array. Biomark Res 2014; 2:24. [PMID: 25635226 PMCID: PMC4310026 DOI: 10.1186/s40364-014-0024-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 11/21/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Infectious agents are estimated to play a causative role in approximately 20% of cancers worldwide. Viruses, notably the Epstein-Barr virus (EBV), are associated with 10-15% of B-cell lymphomas and are found at a higher frequency in immunosuppressed patients. In this study, we screened human lymphoma tissues using a novel Lawrence Livermore Microbial Detection Array (LLMDA), a comprehensive detection system that contains probes for all sequenced viruses and bacteria. This technology has been applied to identify pathogen-associated diseases. RESULTS We evaluated samples from 58 cases with various lymphoid tissue disorders using LLMDA. These included 30 B-cell lymphomas (9 indolent and 21 aggressive type), 2 T-cell lymphomas and 2 NK/T cell lymphomas, 4 plasmacytomas as well as 8 specimens of benign lymphoid tissue. Five of 21 high-grade B-cell lymphomas were positive for Epstein-Barr virus-encoded small RNA (EBER+), while all the indolent B-cell lymphomas were EBER-. Similarly, both NK/T cell lymphomas were EBER+, and the benign tissues were EBER-. We also screened 10 cases of post-transplant lymphoproliferative disorder (PTLD). Five of these cases (4 B-cell lymphomas and 1 NK/T cell lymphoma) were EBER+, and the remaining five cases were EBER-. CONCLUSIONS We have confirmed the reliability of the LLMDA methods by detecting EBV in EBV-positive lymphomas while observing no false-positive results in EBV-negative lymphomas. The LLMDA technique provides a sensitive and alternative method for identifying known viral pathogen associated with tumors and may prove useful for future clinical identification of novel cancer-associated viral pathogens.
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Affiliation(s)
- Joseph Tellez
- Deptartment of Pathology and Laboratory Medicine, University of California, Davis Medical Center, PATH Bldg. 4400V Street, Sacramento, CA 95817 USA
| | - Crystal Jaing
- Applied Genomics, Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA 94551 USA
| | - Jun Wang
- Department of Pathology and Laboratory Medicine, Loma Linda University Medical Center, Loma Linda, CA 92354 USA
| | - Ralph Green
- Deptartment of Pathology and Laboratory Medicine, University of California, Davis Medical Center, PATH Bldg. 4400V Street, Sacramento, CA 95817 USA
| | - Mingyi Chen
- Deptartment of Pathology and Laboratory Medicine, University of California, Davis Medical Center, PATH Bldg. 4400V Street, Sacramento, CA 95817 USA
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