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Tang Y, Dou S, Wei C, Sun Z, Sun D, Zhou Q, Xie L. Single-Nuclei Characterization of Lacrimal Gland in Scopolamine-Induced Dry Eye Disease. Invest Ophthalmol Vis Sci 2024; 65:46. [PMID: 38687491 PMCID: PMC11067549 DOI: 10.1167/iovs.65.4.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/26/2024] [Indexed: 05/02/2024] Open
Abstract
Purpose The lacrimal gland (LG) is the main organ responsible for tear secretion and an important pathogenic site for dry eye disease (DED). This study aimed to comprehensively characterize LG cellular heterogeneity under normal and DED conditions using single-nucleus RNA sequencing (snRNA-seq). Methods Single LG nuclei isolated from mice with or without DED induced by scopolamine (SCOP)/desiccating stress (DS) were subjected to snRNA-seq using the 10x Genomics platform. These cells were clustered and annotated using the t-distributed stochastic neighbor embedding (t-SNE) method and unbiased computational informatic analysis. Cluster identification and functional analysis were performed based on marker gene expression and bioinformatic data mining. Results The snRNA-seq analysis of 30,351 nuclei identified eight major cell types, with acinar cells (∼72.6%) being the most abundant cell type in the LG. Subclustering analysis revealed that the LG mainly contained two acinar cell subtypes, two ductal cell subclusters, three myoepithelial cell (MECs) subtypes, and four immunocyte subclusters. In the SCOP-induced DED model, three major LG parenchymal cell types were significantly altered, characterized by a reduced proportion of acinar cells with a lowered secretion potential and an augmented proportion of ductal cells and MECs. LG immunocytes in DED scenarios showed an intensified inflammatory response and dysregulated intercellular communication with three major LG parenchymal cells. Conclusions Overall, this study offers a systemic single-nucleus transcriptomic profile of LGs in both normal and DED conditions and an atlas of the complicated interactions of immunocytes with major LG parenchymal cells. The findings also facilitate understanding the pathogenesis of DED.
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Affiliation(s)
- Yang Tang
- Shandong First Medical University, Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
| | - Shengqian Dou
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
| | - Chao Wei
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
| | - Ziwen Sun
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Di Sun
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
| | - Qingjun Zhou
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
| | - Lixin Xie
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute of Shandong First Medical University, Qingdao, China
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Kelly L, McGrath S, Rodgers L, McCall K, Tulunay Virlan A, Dempsey F, Crichton S, Goodyear CS. Annexin-A1; the culprit or the solution? Immunology 2022; 166:2-16. [PMID: 35146757 PMCID: PMC9426623 DOI: 10.1111/imm.13455] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/23/2021] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
Annexin‐A1 has a well‐defined anti‐inflammatory role in the innate immune system, but its function in adaptive immunity remains controversial. This glucocorticoid‐induced protein has been implicated in a range of inflammatory conditions and cancers, as well as being found to be overexpressed on the T cells of patients with autoimmune disease. Moreover, the formyl peptide family of receptors, through which annexin‐A1 primarily signals, has also been implicated in these diseases. In contrast, treatment with recombinant annexin‐A1 peptides resulted in suppression of inflammatory processes in murine models of inflammation. This review will focus on what is currently known about annexin‐A1 in health and disease and discuss the potential of this protein as a biomarker and therapeutic target.
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Affiliation(s)
- Lauren Kelly
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Sarah McGrath
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Lewis Rodgers
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Kathryn McCall
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Aysin Tulunay Virlan
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Fiona Dempsey
- Medannex Ltd, 1 Lochrin Square, Fountainbridge, Edinburgh, EH3 9QA
| | - Scott Crichton
- Medannex Ltd, 1 Lochrin Square, Fountainbridge, Edinburgh, EH3 9QA
| | - Carl S Goodyear
- Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
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Fu Z, Zhang S, Wang B, Huang W, Zheng L, Cheng A. Annexin A1: A double-edged sword as novel cancer biomarker. Clin Chim Acta 2020; 504:36-42. [DOI: 10.1016/j.cca.2020.01.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 02/07/2023]
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Sanyal S, Siriwardena AK, Byers R. Measurement of indicator genes using global complementary DNA (cDNA) amplification, by polyadenylic acid reverse transcriptase polymerase chain reaction (poly A RT-PCR): A feasibility study using paired samples from tissue and ductal juice in patients undergoing pancreatoduodenectomy. Pancreatology 2018; 18:458-462. [PMID: 29574096 DOI: 10.1016/j.pan.2018.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/25/2018] [Accepted: 03/19/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The aim of this study is to compare gene expression profiles in RNA isolated from pancreatic ductal juice with the RNA expression profiles of the same genes from matched intra-operative tissue samples from pancreatic tumours. METHODS Intra-operative sampling of pancreatic juice and collection of matched tissue samples was undertaken in patients undergoing pancreatoduodenectomy for clinically suspected pancreatic cancer and a precursor lesion, main-duct intraductal papillary mucinous neoplasm. RNA was isolated and Poly A PCR was used to globally amplify the RNA. Real-time polymerase chain reaction (RT-PCR) was used to measure expression levels of 17 genes selected from microarray studies. Spearman's rank correlation test was used to examine the relationship of gene expression between pancreatic juice and tissue. The study was approved by Regional Ethics Committee. RESULTS Mesothelin (MSLN) showed significant correlation (p < 0.008) in expression levels between paired pancreatic juice and tissue samples in pancreas cancer. In intraductal papillary mucinous neoplasms (IPMN), Matrix Metalloproteinase 7 (MMP7), showed significant correlation (p < 0.01) in the expression levels between paired pancreatic juice and tissue samples. CONCLUSION This study confirms that RNA analysis of paired pancreatic juice and tissue samples and establishment of cDNA using poly A PCR is technically feasible. Application of the technique to non-invasively obtained pancreatic juice during endoscopic assessment of tumours and the use of gene arrays of cancer indicator genes are the next steps in development of this technique.
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Affiliation(s)
- Sudip Sanyal
- Regional Hepato-pancreato-biliary Unit, Manchester Royal Infirmary, Manchester, UK
| | - Ajith K Siriwardena
- Regional Hepato-pancreato-biliary Unit, Manchester Royal Infirmary, Manchester, UK; Faculty of Medicine, University of Manchester, Manchester, UK.
| | - Richard Byers
- Faculty of Medicine, University of Manchester, Manchester, UK; University Department of Histopathology, Manchester Royal Infirmary, Manchester, UK
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Sharan RN, Vaiphei ST, Nongrum S, Keppen J, Ksoo M. Consensus reference gene(s) for gene expression studies in human cancers: end of the tunnel visible? Cell Oncol (Dordr) 2015; 38:419-31. [PMID: 26384826 DOI: 10.1007/s13402-015-0244-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2015] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Gene expression studies are increasingly used to provide valuable information on the diagnosis and prognosis of human cancers. Also, for in vitro and in vivo experimental cancer models gene expression studies are widely used. The complex algorithms of differential gene expression analyses require normalization of data against a reference or normalizer gene, or a set of such genes. For this purpose, mostly invariant housekeeping genes are used. Unfortunately, however, there are no consensus (housekeeping) genes that serve as reference or normalizer for different human cancers. In fact, scientists have employed a wide range of reference genes across different types of cancer for normalization of gene expression data. As a consequence, comparisons of these data and/or data harmonizations are difficult to perform and challenging. In addition, an inadequate choice for a reference gene may obscure genuine changes and/or result in erroneous gene expression data comparisons. METHODS In our effort to highlight the importance of selecting the most appropriate reference gene(s), we have screened the literature for gene expression studies published since the turn of the century on thirteen of the most prevalent human cancers worldwide. CONCLUSIONS Based on the analysis of the data at hand, we firstly recommend that in each study the suitability of candidate reference gene(s) should carefully be evaluated in order to yield reliable differential gene expression data. Secondly, we recommend that a combination of PPIA and either GAPDH, ACTB, HPRT and TBP, or appropriate combinations of two or three of these genes, should be employed in future studies, to ensure that results from different studies on different human cancers can be harmonized. This approach will ultimately increase the depth of our understanding of gene expression signatures across human cancers.
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Affiliation(s)
- R N Sharan
- Radiation and Molecular Biology Unit, Department of Biochemistry, North-Eastern Hill University (NEHU), Shillong, 793022, India.
| | - S Thangminlal Vaiphei
- Radiation and Molecular Biology Unit, Department of Biochemistry, North-Eastern Hill University (NEHU), Shillong, 793022, India
| | - Saibadaiahun Nongrum
- Radiation and Molecular Biology Unit, Department of Biochemistry, North-Eastern Hill University (NEHU), Shillong, 793022, India
| | - Joshua Keppen
- Radiation and Molecular Biology Unit, Department of Biochemistry, North-Eastern Hill University (NEHU), Shillong, 793022, India
| | - Mandahakani Ksoo
- Radiation and Molecular Biology Unit, Department of Biochemistry, North-Eastern Hill University (NEHU), Shillong, 793022, India
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Geng P, Li J, Wang N, Ou J, Xie G, Liu C, Zhao X, Xiang L, Liao Y, Liang H. PSCA rs2294008 Polymorphism with Increased Risk of Cancer. PLoS One 2015; 10:e0136269. [PMID: 26308216 PMCID: PMC4550426 DOI: 10.1371/journal.pone.0136269] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 08/03/2015] [Indexed: 12/15/2022] Open
Abstract
Background Published data on the association between PSCA rs2294008 polymorphism and cancer risk have implicated inconclusive results. To determine the relationship and to precisely assess the effect size estimate of the association, we performed a meta-analysis. Methods We searched published literature in Embase and PubMed databases using the search terms “PSCA”, “prostate stem cell antigen”, “variants”, “polymorphism”, “polymorphisms”, and “cancer”. A total of 21 eligible articles were retrieved, with 27, 197 cancer cases and 48, 237 controls. Results On the whole, we found the association between PSCA rs2294008 polymorphism and cancer risk was statistically significant: TT vs CC: OR = 1.18, 95% CI, 1.10 to 1.27; TT + CT vs CC: OR = 1.08, 95% CI, 1.05 to 1.10; TT vs CT + CC: OR = 1.14, 95% CI, 1.07 to 1.21; T vs C: OR = 1.10, 95% CI, 1.06 to 1.14; CT vs CC: OR = 1.10, 95% CI, 1.06 to 1.13. Stratified analyses in cancer type and ethnicity showed similar results. Conclusions Based on the statistical evidence, we can draw a conclusion that the rs2294008 polymorphism of PSCA gene is likely to play a role in cancer carcinogenesis, especially in gastric cancer and bladder cancer.
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Affiliation(s)
- Peiliang Geng
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Jianjun Li
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Ning Wang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Juanjuan Ou
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Ganfeng Xie
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Chen Liu
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Xiaoxin Zhao
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Lisha Xiang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Yunmei Liao
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Houjie Liang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
- * E-mail:
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Wang J, Raimondo M, Guha S, Chen J, Diao L, Dong X, Wallace MB, Killary AM, Frazier ML, Woodward TA, Wang J, Sen S. Circulating microRNAs in Pancreatic Juice as Candidate Biomarkers of Pancreatic Cancer. J Cancer 2014; 5:696-705. [PMID: 25258651 PMCID: PMC4174514 DOI: 10.7150/jca.10094] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 08/21/2014] [Indexed: 12/23/2022] Open
Abstract
Development of sensitive and specific biomarkers, preferably those circulating in body fluids is critical for early diagnosis of cancer. This study performed profiling of microRNAs (miRNAs) in exocrine pancreatic secretions (pancreatic juice) by microarray analysis utilizing pancreatic juice from 6 pancreatic ductal adenocarcinoma (PDAC) patients and two pooled samples from 6 non-pancreatic, non-healthy (NPNH) as controls. Differentially circulating miRNAs were subsequently validated in 88 pancreatic juice samples from 50 PDAC, 19 chronic pancreatitis (CP) patients and 19 NPNH controls. A marked difference in the profiles of four circulating miRNAs (miR-205, miR-210, miR-492, and miR-1427) was observed in pancreatic juice collected from patients with PDAC and those without pancreatic disease. Elevated levels of the four miRNAs together predicted PDAC with a specificity of 88% and sensitivity of 87%. Inclusion of serum CA19-9 level increased the sensitivity to 91% and the specificity to 100%. Enrichment of the four miRNAs in pancreatic juice was associated with decreased OS, as was the combination of miR-205 and miR-210. Higher contents of miR-205 and miR-210 were also associated with lymph node metastasis. Elevated levels of circulating miR-205, miR-210, miR-492, and miR-1247 in pancreatic juice are, therefore, promising candidate biomarkers of disease and poor prognosis in patients with PDAC.
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Affiliation(s)
- Jin Wang
- 1. Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Massimo Raimondo
- 2. Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida; The University of Texas Medical School and Health Science Center at Houston, Texas
| | - Sushovan Guha
- 3. Division of Gastroenterology, Hepatology, and Nutrition, The University of Texas Medical School and Health Science Center at Houston, Texas
| | - Jinyun Chen
- 4. Epidemiology, Bioinformatics and Computational Biology, UT MD Anderson Cancer Center, Houston Texas
| | - Lixia Diao
- 5. Bioinformatics and Computational Biology, UT MD Anderson Cancer Center, Houston Texas
| | - Xiaoqun Dong
- 6. Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, The University of Rhode Island, Kingston, Rhode Island
| | - Michael B Wallace
- 2. Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida; The University of Texas Medical School and Health Science Center at Houston, Texas
| | - Ann M Killary
- 1. Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas; ; 7. Program in Human and Molecular Genetics, The University of Texas Graduate school of Biomedical Sciences, Houston, Texas
| | - Marsha L Frazier
- 4. Epidemiology, Bioinformatics and Computational Biology, UT MD Anderson Cancer Center, Houston Texas; ; 7. Program in Human and Molecular Genetics, The University of Texas Graduate school of Biomedical Sciences, Houston, Texas
| | - Timothy A Woodward
- 2. Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida; The University of Texas Medical School and Health Science Center at Houston, Texas
| | - Jing Wang
- 5. Bioinformatics and Computational Biology, UT MD Anderson Cancer Center, Houston Texas
| | - Subrata Sen
- 1. Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas; ; 7. Program in Human and Molecular Genetics, The University of Texas Graduate school of Biomedical Sciences, Houston, Texas
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Räty S, Sand J, Laukkarinen J, Vasama K, Bassi C, Salvia R, Nordback I. Cyst fluid SPINK1 may help to differentiate benign and potentially malignant cystic pancreatic lesions. Pancreatology 2013; 13:530-3. [PMID: 24075519 DOI: 10.1016/j.pan.2013.06.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/04/2013] [Accepted: 06/20/2013] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Differential diagnosis between benign and potentially malignant cystic pancreatic lesions may be difficult. Previously we have compared cyst fluid serine protease inhibitor Kazal type I (SPINK1) with some traditionally used tumour markers (amylase, CEA, Ca19-9) and found that it may be a new promising maker in the differential diagnosis of cystic pancreatic lesions. In the present study, we focused on cyst fluid SPINK1 levels in benign and potentially malignant cystic pancreatic lesions. DESIGN Sixty-one patients operated on for cystic pancreatic lesion in Tampere University Hospital, Finland and in Verona University Hospital, Italy, were included. Cyst fluid was aspirated during surgery, stored at -70 °C, and analysed with immunofluorometric assay for SPINK1. The final diagnosis was acute pancreatitis with fluid collection (Acute FC) in 4 patients, chronic pseudocyst (PS) in 17 patients, serous cystadenoma (SCA) in 7 patients, mucinous cystadenoma (MCA) in 21 patients and intraductal papillary-mucinous neoplasm (IPMN) in 12 patients (9 main/mixed duct type and 3 branch duct type). RESULTS The acute FC patients had high SPINK1 levels. Among chronic cysts, SPINK1 levels were significantly higher in patients with potentially malignant cysts (main/mixed duct IPMN and MCA) than with benign cysts (side branch IPMN and SCA), (median and range, [480 (13-3602) vs. 18 (0.1-278) μg/L]; p < 0.0001). In the subcohort of 24 patients with <3 cm chronic cyst, cyst fluid SPINK 1 levels were significantly lower in SCA or side branch IPMN (3 [2-116] μg/L) than in main duct IPMN or MCA (638 [66-3602] μg/L; p = 0.018). The best sensitivity and specificity to differentiate any size MCA or main/mixed type IPMN from SCA or side branch IPMN were 85% and 84% (AUC 0.94; cut-off value 118 μg/L). The best sensitivity and specificity to differentiate <3 cm MCA or main duct IPMN from SCA or side branch IPMN were 93% and 89% (AUC 0.98; cut-off value 146 μg/L). CONCLUSIONS Cyst fluid SPINK1 may be a possible marker in the differential diagnosis of benign and potentially malignant cystic pancreatic lesions.
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Affiliation(s)
- Sari Räty
- Department of Gastroenterology and Alimentary Tract Surgery, Finland; ARC-NET Research Center, University and Hospital Trust of Verona, Italy.
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Giovinazzo F, Turri G, Zanini S, Butturini G, Scarpa A, Bassi C. Clinical implications of biological markers in Pancreatic Ductal Adenocarcinoma. Surg Oncol 2012; 21:e171-82. [PMID: 22981281 DOI: 10.1016/j.suronc.2012.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/17/2012] [Accepted: 07/26/2012] [Indexed: 12/29/2022]
Abstract
Pancreatic Ductal Adenocarcinoma (PDAC) is a malignant neoplasm and is the fourth leading cause of cancer-related deaths in US with a 5-year survival rate less than 5%. Surgery is the only potentially curative treatment even though the result is a palliation in the majority of cases and the majority of lesions are lately diagnosed. Progression from normal pancreatic epithelium to metastatic disease is now a well-characterized sequence of events. Research has shown that pancreatic cancer is fundamentally a genetic disease with several biological pathway implied in apoptosis, cell proliferation and self-sufficiency in growth signaling, but how those findings could be applied in daily clinical practice remain unknown. Several studies tried to characterize diagnostic and prognostic biomarkers in PDAC to make it possible an earlier diagnosis, guarantee a more effective treatment and reach a better prognosis even though the results remain contrasting. The main limit of the published researches is the small number of patients studied, but even the heterogeneity of the used methods of analysis. Examining critically the research of the last years future trials may be addressed toward a translational models integrating "the bench and the bed" with the clinical experience and drive the basic research toward the clinical applications.
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Affiliation(s)
- Francesco Giovinazzo
- Laboratory of Translational Surgery, University Laboratories of Medical Research (LURM), G.B. Rossi Hospital, University of Verona, Piazzale L.A. Scuro 10, Verona 37134, Italy
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Wang T, Zhang L, Li H, Wang B, Chen K. Prostate stem cell antigen polymorphisms and susceptibility to gastric cancer: a systematic review and meta-analysis. Cancer Epidemiol Biomarkers Prev 2012; 21:843-50. [PMID: 22426141 DOI: 10.1158/1055-9965.epi-11-1176] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Many studies have reported that prostate stem cell antigen (PSCA) polymorphisms (rs2294008 and/or 2976392) are significantly associated with gastric cancer (GC) risk, although the published results are inconsistent. We conducted a systematic review and meta-analysis for relevant literatures to quantitatively evaluate the relationship between PSCA polymorphisms and GC susceptibility. METHODS Extensive searches were conducted in three databases up to November 1, 2011. ORs and 95% CIs were used to assess the strength of the associations. The data were further stratified by ethnicity, histopathology, subsite, and study design. All of the associations were evaluated with dominant model and recessive model, respectively. Heterogeneity and publication bias were also assessed by Q test, I(2), and funnel plot accordingly. RESULTS Nine articles including 11 case-control data sets were included, with 10,746 GC cases and 9,158 controls for rs2294008 and 6,060 cases and 4,824 controls for rs2976392. The results showed that risk allele carriers were significantly associated with GC risk compared with nonrisk allele homozygotes. In stratification analyses, these associations remained significant for majority of subgroups except for Caucasians and noncardia tumor in dominant model, and cardia tumor in both dominant and recessive model. Random model was used when heterogeneity among studies was detected. No publication bias was observed. CONCLUSIONS The two loci of PSCA (rs2294008 and rs2976392) were both significantly associated with GC susceptibility and in linkage disequilibrium. IMPACT More prospective studies on PSCA polymorphisms at multicenters with sufficient sample size and less heterogeneity will be needed for further validations.
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Affiliation(s)
- Tao Wang
- Department of Epidemiology and Biostatistics, Tianjin Medical University, Tianjin, China
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