1
|
Meijuan C, Meng X, Fang L, Qian W. Synaptotagmin-like protein 1 is a potential diagnostic and prognostic biomarker in endometrial cancer based on bioinformatics and experiments. J Ovarian Res 2023; 16:16. [PMID: 36653850 PMCID: PMC9850549 DOI: 10.1186/s13048-023-01097-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 01/11/2023] [Indexed: 01/20/2023] Open
Abstract
Endometrial cancer (EC) is one of the most common gynecologic malignancies. Identification of potential EC biomarkers is essential to improve the prognosis and development of therapies against EC. Synaptotagmin-like protein 1 (SYTL1), as a small GTPase Rab27 effector, mainly plays a role in vesicle trafficking and cytotoxic granule exocytosis in lymphocytes. However the role of SYTL1 in EC remains uncertain. We performed a comprehensive assessment of the relationship between SYTL1 and patient diagnosis and prognosis by analysis of EC patients' data from TCGA. We employed the LinkedOmics and Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database to analyze the biological function of SYTL1 in EC. In addition, the correlation between SYTL1 expression and its DNA methylation was performed by using cBioportal, UALCAN, TCGA Wanderer and MethSurv databases. We further assessed the link between SYTL1 and tumor-infiltrating immune cells by using gene set variation analysis (GSVA).Results We found that SYTL1 was highly expressed in EC patients and cell lines. And increased expression of SYTL1 was associated with age, clinical stage, histological type, histological grade and good overall survival (OS).SYTL1 DNA methylation is negatively associated with SYTL1 expression and UCEC patients' OS. SYTL1 expression is closely correlated with immune infiltration. Furthermore, we carried out in vitro experiments to verify the results of bioinformatic analysis.Conclusion Our results demonstrated that the elevation of SYTL1 expression is associated with good OS and SYTL1 might be a potential diagnostic and prognostic marker in EC.
Collapse
Affiliation(s)
- Cai Meijuan
- grid.452402.50000 0004 1808 3430Department of Clinical Laboratory, Qilu Hospital of Shandong University, No.107 Wenhua West Road, 250013 Jinan, Shandong China ,grid.452402.50000 0004 1808 3430Department of Clinical Laboratory, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong China
| | - Xu Meng
- grid.452402.50000 0004 1808 3430Department of Clinical Laboratory, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong China
| | - Liu Fang
- Department of Pathology, Qingdao Chengyang People’s Hospital, No.758 Hefei Road, Shandong 266035 Qingdao, China
| | - Wang Qian
- grid.452402.50000 0004 1808 3430Department of Clinical Laboratory, Qilu Hospital of Shandong University, No.107 Wenhua West Road, 250013 Jinan, Shandong China ,grid.452402.50000 0004 1808 3430Department of Clinical Laboratory, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong China
| |
Collapse
|
2
|
Dang TM, Wong WC, Ong SM, Li P, Lum J, Chen J, Poidinger M, Zolezzi F, Wong SC. MicroRNA expression profiling of human blood monocyte subsets highlights functional differences. Immunology 2015; 145:404-16. [PMID: 25707426 DOI: 10.1111/imm.12456] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 02/12/2015] [Accepted: 02/17/2015] [Indexed: 12/14/2022] Open
Abstract
Within human blood there are two subsets of monocytes that can be identified by differential expression of CD16. Although numerous phenotypic and functional differences between the subsets have been described, little is known of the mechanisms underlying the distinctive properties of the two subsets. MicroRNAs (miRNAs) are small non-coding RNAs that can regulate gene expression through promoting mRNA degradation or repressing translation, leading to alterations in cellular processes. Their potential influence on the functions of monocyte subsets has not been investigated. In this study, we employed microarray analysis to define the miRNA expression profile of human monocyte subsets. We identified 66 miRNAs that were differentially expressed (DE) between CD16(+) and CD16(-) monocytes. Gene ontology analysis revealed that the predicted targets of the DE miRNAs were predominantly associated with cell death and cellular movement. We validated the functional impacts of selected DE miRNAs in CD16(-) monocytes, over-expression of miR-432 significantly increases apoptosis, and inhibiting miR-19a significantly reduces cell motility. Furthermore, we found that miR-345, another DE miRNA directly targets the transcription factor RelA in monocytes, which resulted in the differential expression of RelA in monocyte subsets. This implicates miR-345 indirect regulation of many genes downstream of RelA, including important inflammatory mediators. Together, our data show that DE miRNAs could contribute substantially to regulating the functions of human blood monocytes.
Collapse
Affiliation(s)
- Truong-Minh Dang
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Wing-Cheong Wong
- Bioinformatic Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Siew-Min Ong
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Peng Li
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Josephine Lum
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Jinmiao Chen
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Michael Poidinger
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Francesca Zolezzi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Siew-Cheng Wong
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| |
Collapse
|
3
|
Muralimanoharan SB, Kunnumakkara AB, Shylesh B, Kulkarni KH, Haiyan X, Ming H, Aggarwal BB, Rita G, Kumar AP. Butanol fraction containing berberine or related compound from nexrutine inhibits NFkappaB signaling and induces apoptosis in prostate cancer cells. Prostate 2009; 69:494-504. [PMID: 19107816 PMCID: PMC2674392 DOI: 10.1002/pros.20899] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Epidemiological and laboratory studies support the hypothesis that several plant components influence prostate carcinogenesis and holds promise for disease prevention. Previously we reported that Nexrutine (bark extract from Phellodendron amurense) inhibits proliferation of prostate cancer cells and prostate tumor development in the transgenic adenocarcinoma of mouse prostate (TRAMP) model through modulation of Akt signaling pathway. In the present investigation we conducted studies to further define the mechanism of action of Nexrutine and to identify the active component associated with its biological activity. METHODS Androgen-responsive, androgen-independent human prostate cancer cell lines and tissues from TRAMP mice fed Nexrutine(R) were used in these studies. Activity guided fractionation identified butanol fraction recapitulating the activities of Nexrutine assessed by proliferation assays, apoptotic assays (DAPI and TUNEL staining), transient transfections, gel shift assays and Western blotting. In addition ultra-performance liquid chromatography (UPLC) of butanol fraction was used to identify active component of Nexrutine. RESULTS Butanol fraction recapitulated the activities of Nexrutine in (i) inhibiting proliferation; (ii) inducing apoptosis; and (iii) modulating transcriptional activity of NFkappaB in prostate cancer cells. Our data also indicates that both Nexrutine and butanol fraction modulates NFkappaB transcriptional activity by inhibiting IkappaBalpha phosphorylation. Expression of p65 and phosphorylated IkappaBalpha are high in tumors from TRAMP mice. In contrast dietary administration of Nexrutine reduced expression of p65 and phosphorylated IkappaBalpha in prostate from TRAMP mice. In addition using UPLC, we have identified berberine or closely related compound in the butanol fraction. CONCLUSION The results suggest that berberine or closely related component of butanol fraction may be responsible for the observed biological activities and induce apoptosis in prostate cancer cells by targeting critical cell survival signaling pathways both in vitro and in vivo.
Collapse
Affiliation(s)
| | - A. B. Kunnumakkara
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bhaskaran Shylesh
- Department of Urology, School of Medicine, University of Texas Health Science Center, San Antonio, Texas
| | | | - Xu Haiyan
- Department of Pharmaceutical Sciences, University of Houston, Texas
| | - Hu Ming
- Department of Pharmaceutical Sciences, University of Houston, Texas
| | - Bharat B. Aggarwal
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ghosh Rita
- Department of Urology, School of Medicine, University of Texas Health Science Center, San Antonio, Texas
| | - Addanki P. Kumar
- Department of Urology, School of Medicine, University of Texas Health Science Center, San Antonio, Texas
- Correspondence to: Dr. Addanki P. Kumar, PhD, Department of Urology, 7703 Floyd Curl Drive, San Antonio, TX 78229. E-mail:
| |
Collapse
|
4
|
Han JC, Zhang KL, Chen XY, Jiang HF, Kong QY, Sun Y, Wu ML, Huang L, Li H, Liu J. Expression of seven gastric cancer-associated genes and its relevance for Wnt, NF-kappaB and Stat3 signaling. APMIS 2008; 115:1331-43. [PMID: 18184402 DOI: 10.1111/j.1600-0643.2007.00695.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The aim of the current study was to profile c-Myc, standard CD44 (CD44s), CD44v6, cyclin D1, survivin, MMP-7 and VEGF expression patterns in different gastric samples and to elucidate their relevance for Wnt, NF-kappaB and/or Stat3 activation using multiple experimental approaches. The results revealed that 87.1% (27/31) of gastric cancers and 8.7% (2/23) of noncancerous lesions (chronic gastritis and intestinal metaplasia) showed Wnt activation (Wnt(+)) that was closely related to the expression of the seven genes. Some Wnt(-) noncancerous lesions also expressed the above-mentioned genes, higher frequencies of survivin (7/8), VEGF (7/8), cyclin D1 (6/8) and c-Myc (5/8) but not CD44s (2/8), CD44v6 (3/8) and MMP-7 (2/8) being detected in the NF-kappaB(+) samples. Stat3 was activated in 37/54 gastric tissues, and in 3/4 VEGF, 4/6 c-Myc, 4/8 survivin, 2/4 MMP-7, 1/2 CD44v6, and 4/9 cyclin D1(+) but Wnt(-)/NF-kappaB(-) samples. These findings showed a close correlation in GCs between Wnt, NF-kappaB and Stat3 signaling and expression of the seven genes, the importance of NF-kappaB and Stat3 activation in regulating c-Myc, survivin, cyclin D1 and VEGF in noncancerous lesions, and the potential coordinative effects of these three signalings on GC formation presumably by promoting the transcription of their common target genes.
Collapse
Affiliation(s)
- Jing-Chun Han
- Liaoning Laboratory of Cancer Genomics and Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, P. R. China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Johnson J, Ellis B, Noack D, Seabra M, Catz S. The Rab27a-binding protein, JFC1, regulates androgen-dependent secretion of prostate-specific antigen and prostatic-specific acid phosphatase. Biochem J 2005; 391:699-710. [PMID: 16004602 PMCID: PMC1276972 DOI: 10.1042/bj20050380] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2005] [Revised: 06/29/2005] [Accepted: 07/08/2005] [Indexed: 11/17/2022]
Abstract
Two of the major proteins secreted by the prostate epithelium secretory cells are PSA (prostate-specific antigen) and PSAP (prostatic-specific acid phosphatase). The molecules involved in the secretory machinery of PSA and PSAP, and the regulation of this machinery, remain unknown. In the present paper, we provide evidence that JFC1 [synaptotagmin-like protein (slp1)], a Rab27a- and PtdIns(3,4,5)P3-binding protein, regulates the androgen-dependent secretion of PSAP and PSA in human LNCaP prostate carcinoma cells. Androgen-dependent PSAP secretion was significantly inhibited in cells that expressed the C2A domain of JFC1 [PtdIns(3,4,5)P3-binding-domain], but was unaffected by JFC1 overexpression. Conversely, PSA secretion was not inhibited by the C2A domain of JFC1. We show, using immunofluorescence analysis, that JFC1 co-localizes with PSAP, but rarely with PSA, in prostate granules, suggesting that JFC1 is part of the PSAP secretory machinery. However, PSA secretion was significantly increased in LNCaP cells that overexpressed JFC1, indicating that the secretion of PSA is susceptible to variations in the intracellular concentration of JFC1. Both PSAP and PSA secretion was increased by overexpression of wild-type Rab27a or the constitutively active Rab27aQ78L. The secretion of PSA was partially inhibited in the presence of LY294002, while the secretion of PSAP was completely abolished by the PI3K (phosphoinositide 3-kinase) inhibitor. This supports the view that PI3K plays a differential role in the secretion of prostate secretory markers. In conclusion, we present evidence that JFC1 differentially regulates the secretion of PSAP and PSA, and that Rab27a and PI3K play a central role in the exocytosis of prostate-specific markers.
Collapse
Key Words
- exocytosis
- phosphoinositide 3-kinase (pi3k)
- prostate-specific antigen (psa)
- prostatic-specific acid phosphatase (psap)
- synaptotagmin-like protein
- vesicular trafficking
- dsred, red fluorescent protein from discosoma sp.
- eea1, early endosome antigen 1
- egfp, enhanced green fluorescent protein
- nf-κb, nuclear factor κb
- pi3k, phosphoinositide 3-kinase
- pip3, ptdins(3,4,5)p3
- psa, prostate-specific antigen
- psap, prostate-specific acid phosphatase
- slp, synaptotagmin-like protein
- syt, synaptotagmin
- t-snare, target-associated soluble n-ethylmaleimide-sensitive fusion protein attachment protein receptor
- vamp-2, vesicle-associated membrane protein-2
Collapse
Affiliation(s)
- Jennifer L. Johnson
- *Division of Biochemistry, Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, U.S.A
| | - Beverly A. Ellis
- *Division of Biochemistry, Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, U.S.A
| | - Deborah Noack
- *Division of Biochemistry, Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, U.S.A
| | - Miguel C. Seabra
- †Cell and Molecular Biology Section, Division of Biomedical Sciences, Faculty of Medicine, Imperial College London, London SW7 2AZ, U.K
| | - Sergio D. Catz
- *Division of Biochemistry, Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, U.S.A
| |
Collapse
|
6
|
Johnson JL, Pacquelet S, Lane WS, Eam B, Catz SD. Akt regulates the subcellular localization of the Rab27a-binding protein JFC1 by phosphorylation. Traffic 2005; 6:667-81. [PMID: 15998322 DOI: 10.1111/j.1600-0854.2005.00308.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here, we show that the Rab27a-binding protein JFC1/Slp1 (synaptotagmin-like protein) is regulated by Akt-mediated phosphorylation. Using the phosphatase and tensin homolog-null LNCaP cells and the phosphatidylinositol 3-kinase inhibitor LY294002, we show that the phosphorylation of endogenous JFC1 is dependent on the phosphatidylinositol 3-kinase/Akt pathway. JFC1 was phosphorylated in cells expressing a constitutively active Akt, confirming that it is an Akt substrate in vivo. Direct phosphorylation of JFC1 by Akt was confirmed in vitro. Using microcapillary high-performance liquid chromatography tandem mass spectrometry, we identified five Akt-phosphorylation sites in JFC1. By mutagenesis analysis and subsequent immunoprecipitation (IP), we established that Akt phosphorylates JFC1 at serine 241. JFC1 and Rab27a colocalize in the proximity of the plasma membrane in LNCaP cells. The interaction was confirmed by IP analysis and was abolished by the point mutation W83S in JFC1. Phosphorylation did not alter the ability of JFC1 to bind to Rab27a. Instead, phosphorylation by Akt dramatically decreased when JFC1 was bound to Rab27a. Finally, we show that as a consequence of in vivo phosphorylation, JFC1 dissociates from the membrane, promoting JFC1 redistribution to the cytosol. Our results suggest that Akt regulates JFC1/Slp1 function by phosphorylation and may have implications on Rab27a-containing vesicle secretion.
Collapse
Affiliation(s)
- Jennifer L Johnson
- Division of Biochemistry, Department of Molecular and Experimental Medicine, The Scripps Research Institute,10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | | | | | | | | |
Collapse
|
7
|
Sweeney C, Li L, Shanmugam R, Bhat-Nakshatri P, Jayaprakasan V, Baldridge LA, Gardner T, Smith M, Nakshatri H, Cheng L. Nuclear factor-kappaB is constitutively activated in prostate cancer in vitro and is overexpressed in prostatic intraepithelial neoplasia and adenocarcinoma of the prostate. Clin Cancer Res 2005; 10:5501-7. [PMID: 15328189 DOI: 10.1158/1078-0432.ccr-0571-03] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The transcription factor nuclear factor-kappaB (NF-kappaB) promotes the production of angiogenic, antiapoptotic, and prometastatic factors that are involved in carcinogenesis. EXPERIMENTAL DESIGN Electromobility gel shift assays were used to evaluate NF-kappaB DNA binding in vitro. The functional relevance of NF-kappaB DNA binding was assessed by both cDNA array analyses and proliferation assays of prostate cancer cells with and without exposure to an NF-kappaB inhibitor, parthenolide. Immunohistochemistry staining for the p65 NF-kappaB subunit was used to determine the frequency and location of NF-kappaB in 97 prostatectomy specimens. The amount of staining was quantified on a 0-3+ scale. RESULTS An electromobility gel shift assay confirmed the presence of NFkappaB DNA binding in all four prostate cancer cell lines tested. The binding was inhibited by parthenolide, and this agent also decreased multiple gene transcripts under the control of NF-kappaB and inhibited proliferation of prostate cancer cells. The staining results revealed overexpression of p65 in the prostatic intraepithelial neoplasia and cancer compared with the benign epithelium. Specifically, there was a predominance of 1+ and 2+ with no 3+ staining in benign epithelium, whereas there was only 2+ and 3+ staining (30 and 70%, respectively) in the cancerous areas. These differences were statistically different. There was no correlation with tumor grade or stage. CONCLUSIONS NF-kappaB is constitutively activated in prostate cancer and functionally relevant in vitro. Immunohistochemistry of human prostatectomy specimens demonstrated overexpression of the active subunit of NF-kappaB, p65, and that this occurs at an early stage in the genesis of prostate cancer. This work supports the rationale for targeting NF-kappaB for the prevention and/or treatment of prostate cancer.
Collapse
Affiliation(s)
- Christopher Sweeney
- Department of Medicine, Indiana University, Indianapolis, Indiana 46202, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Bostwick DG, Burke HB, Djakiew D, Euling S, Ho SM, Landolph J, Morrison H, Sonawane B, Shifflett T, Waters DJ, Timms B. Human prostate cancer risk factors. Cancer 2004; 101:2371-490. [PMID: 15495199 DOI: 10.1002/cncr.20408] [Citation(s) in RCA: 383] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Prostate cancer has the highest prevalence of any nonskin cancer in the human body, with similar likelihood of neoplastic foci found within the prostates of men around the world regardless of diet, occupation, lifestyle, or other factors. Essentially all men with circulating androgens will develop microscopic prostate cancer if they live long enough. This review is a contemporary and comprehensive, literature-based analysis of the putative risk factors for human prostate cancer, and the results were presented at a multidisciplinary consensus conference held in Crystal City, Virginia, in the fall of 2002. The objectives were to evaluate known environmental factors and mechanisms of prostatic carcinogenesis and to identify existing data gaps and future research needs. The review is divided into four sections, including 1) epidemiology (endogenous factors [family history, hormones, race, aging and oxidative stress] and exogenous factors [diet, environmental agents, occupation and other factors, including lifestyle factors]); 2) animal and cell culture models for prediction of human risk (rodent models, transgenic models, mouse reconstitution models, severe combined immunodeficiency syndrome mouse models, canine models, xenograft models, and cell culture models); 3) biomarkers in prostate cancer, most of which have been tested only as predictive factors for patient outcome after treatment rather than as risk factors; and 4) genotoxic and nongenotoxic mechanisms of carcinogenesis. The authors conclude that most of the data regarding risk relies, of necessity, on epidemiologic studies, but animal and cell culture models offer promise in confirming some important findings. The current understanding of biomarkers of disease and risk factors is limited. An understanding of the risk factors for prostate cancer has practical importance for public health research and policy, genetic and nutritional education and chemoprevention, and prevention strategies.
Collapse
|