1
|
Alsadat Mahmoudian R, Lotfi Gharaie M, Abbaszadegan R, Forghanifard MM, Abbaszadegan MR. Interaction between LINC-ROR and Stemness State in Gastric Cancer Cells with Helicobacter pylori Infection. Iran Biomed J 2021; 25:157-68. [PMID: 33745265 PMCID: PMC8183384 DOI: 10.29252/ibj.25.3.157] [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] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/13/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Large intergenic non-coding RNA regulator of reprogramming (LINC-ROR), as a cancer-related Long non-coding RNA, has vital roles in stem cell survival, pluripotency, differentiation, and self-renewal in human embryonic stem cell. However, cancer-related molecular mech¬anisms, its functional roles, and clinical value of LINC-ROR in gastric cancer (GC) remain unclear. In this study, we aimed to investigate probable interplay between LINC-ROR with SALL4 stemness regulator and their role with the development of the disease. METHODS The mRNA expression profile of LINC-ROR and SALL4 was assessed in tumoral and adjacent non-cancerous tissues of GC patients, using quantitative real-time PCR. RESULTS Significant LINC-ROR underexpression and SALL4 overexpression were observed in 55.81% and 75.58% (p < 0.0001) of samples, respectively. The expression of LINC-ROR and SALL4 were significantly correlated with each other (p = 0.044). There was an association between the underexpression of LINC-ROR and sex, stage of tumor progression, tumor type, and location of tumor (p < 0.05), and Helicobacter pylori infection with SALL4 expression (p = 0.036). There were also significant correlations between concomitant mRNA expression of SALL4 and LINC-ROR in tumors located at distal noncardiac, positive for H. pylori infection, tumors with invasion into the muscle layer of the stomach, and grade II tumor (p < 0.05). CONCLUSION The clinical results of the SALL4-LINC-ROR association propose a probable functional interaction between these markers in tumor maintenance and aggressiveness. Our study can help to understand one of the mechanisms involved in the progression of gastric cancer through the function of these regulators.
Collapse
Affiliation(s)
| | - Maryam Lotfi Gharaie
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Division of Physiology, Department of Basic Science, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Roya Abbaszadegan
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | |
Collapse
|
2
|
Asakawa K, Kawakami K. Protocadherin-Mediated Cell Repulsion Controls the Central Topography and Efferent Projections of the Abducens Nucleus. Cell Rep 2018; 24:1562-72. [PMID: 30089266 DOI: 10.1016/j.celrep.2018.07.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/31/2018] [Accepted: 07/06/2018] [Indexed: 11/21/2022] Open
Abstract
Cranial motor nuclei in the brainstem innervate diverse types of head and neck muscles. Failure in establishing these neuromuscular connections causes congenital cranial dysinnervation disorders (CCDDs) characterized by abnormal craniofacial movements. However, mechanisms that link cranial motor nuclei to target muscles are poorly understood at the molecular level. Here, we report that protocadherin-mediated repulsion mediates neuromuscular connection in the ocular motor system in zebrafish. We identify pools of abducens motor neurons that are topographically arranged according to soma size and convergently innervate a single muscle. Disruptions of Duane retraction syndrome-associated transcription factors reveal that these neurons require Mafba/MAFB, but not Sall4/SALL4, for differentiation. Furthermore, genetic perturbations of Pcdh17/protocadherin-17 result in defective axon growth and soma clumping, thereby abolishing neuromuscular connectivity. Our results suggest that protocadherin-mediated repulsion forms the central topography and efferent projection pattern of the abducens nucleus following Mafba-dependent specification and imply potential involvement of protocadherins in CCDD etiology.
Collapse
|
3
|
Fan H, Cui Z, Zhang H, Kailasam Mani SK, Diab A, Lefrancois L, Fares N, Merle P, Andrisani O. DNA demethylation induces SALL4 gene re-expression in subgroups of hepatocellular carcinoma associated with Hepatitis B or C virus infection. Oncogene 2017; 36:2435-2445. [PMID: 27797380 PMCID: PMC5408304 DOI: 10.1038/onc.2016.399] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 12/14/2015] [Revised: 08/16/2016] [Accepted: 09/18/2016] [Indexed: 02/06/2023]
Abstract
Sal-like protein 4 (SALL4), an embryonic stem cell transcriptional regulator, is re-expressed by an unknown mechanism in poor prognosis hepatocellular carcinoma (HCC), often associated with chronic hepatitis B virus (HBV) infection. Herein, we investigated the mechanism of SALL4 re-expression in HBV-related HCCs. We performed bisulfite sequencing PCR of genomic DNA isolated from HBV-related HCCs and HBV replicating cells, and examined DNA methylation of a CpG island located downstream from SALL4 transcriptional start site (TSS). HBV-related HCCs expressing increased SALL4 exhibited demethylation of specific CpG sites downstream of SALL4 TSS. Similarly, SALL4 re-expression and demethylation of these CpGs was observed in HBV replicating cells. SALL4 is also re-expressed in poor prognosis HCCs of other etiologies. Indeed, increased SALL4 expression in hepatitis C virus-related HCCs correlated with demethylation of these CpG sites. To understand how CpG demethylation downstream of SALL4 TSS regulates SALL4 transcription, we quantified by chromatin immunoprecipitation (ChIP) assays RNA polymerase II occupancy of SALL4 gene, as a function of HBV replication. In absence of HBV replication, RNA polymerase II associated with SALL4 exon1. By contrast, in HBV replicating cells RNA polymerase II occupancy of all SALL4 exons increased, suggesting CpG demethylation downstream from SALL4 TSS influences SALL4 transcriptional elongation. Intriguingly, demethylated CpGs downstream from SALL4 TSS are within binding sites of octamer-binding transcription factor 4 (OCT4) and signal transducer and activator of transcription3 (STAT3). ChIP assays confirmed occupancy of these sites by OCT4 and STAT3 in HBV replicating cells, and sequential ChIP assays demonstrated co-occupancy with chromatin remodeling BRG1/Brahma-associated factors. BRG1 knockdown reduced SALL4 expression, whereas BRG1 overexpression increased SALL4 transcription in HBV replicating cells. We conclude demethylation of CpGs located within OCT4 and STAT3 cis-acting elements, downstream of SALL4 TSS, enables OCT4 and STAT3 binding, recruitment of BRG1, and enhanced RNA polymerase II elongation and SALL4 transcription.
Collapse
Affiliation(s)
- Huitao Fan
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| | - Zhibin Cui
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| | - Hao Zhang
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| | - Saravana Kumar Kailasam Mani
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| | - Ahmed Diab
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| | - Lydie Lefrancois
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052, CNRS 5286, Lyon Cedex, France
| | - Nadim Fares
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052, CNRS 5286, Lyon Cedex, France
| | - Philippe Merle
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052, CNRS 5286, Lyon Cedex, France
| | - Ourania Andrisani
- Department of Basic Medical Sciences, Purdue University, West Lafayette IN 47907
- Purdue Center for Cancer Research, Purdue University, West Lafayette IN 47907
| |
Collapse
|
4
|
Onder S, Taskin OC, Sen F, Topuz S, Kucucuk S, Sozen H, Ilhan R, Tuzlali S, Yavuz E. High expression of SALL4 and fascin, and loss of E-cadherin expression in undifferentiated/dedifferentiated carcinomas of the endometrium: An immunohistochemical and clinicopathologic study. Medicine (Baltimore) 2017; 96:e6248. [PMID: 28272224 PMCID: PMC5348172 DOI: 10.1097/md.0000000000006248] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Undifferentiated/dedifferentiated endometrial carcinomas (UCE/DCEs) of the endometrium are rare tumors with poor prognosis. There are few clinicopathologic studies with detailed immunohistochemical analysis regarding UCE/DCEs.We evaluated the diagnostic value of a selected tumor stem-cell marker and epithelial-mesenchymal transition (EMT) markers, in addition to previously studied markers in identifying UCE/DCEs from other types of high-grade endometrial carcinomas.Eleven cases of UCE/DCEs with complete clinical follow-up that were diagnosed between 2006 and 2015 were included in the study. For immunohistochemical comparison, 11 clinically matched cases for each type of other high-grade endometrial carcinomas (high-grade endometrioid (F3-EC), serous [SC], and clear cell carcinoma [CCC]) were used as a control group. An immunohistochemical analysis including fascin, SALL4, E-cadherin, and β-catenin, in addition to epithelial and neuroendocrine markers was performed in each case.The majority of UCE/DCEs displayed diffuse expression of fascin (81.9%) and loss of E-cadherin expression (54.5%). SALL4 expression was detected in 36.3% of the UCE/DCE cases. SALL4 expression was significantly more frequent in UCE/DCEs than all other high-grade carcinomas (P < 0.001). Loss of E-cadherin and fascin expression was significantly more frequent in UCE/DCEs than high-grade endometrioid and clear cell adenocarcinomas (P = 0.012, 0.014 and P = 0.01, 0.003, respectively).We suggest that loss of E-cadherin expression together with fascin and SALL4 immunopositivity in addition to morphologic features have an impact in differential diagnosis of UCE/DCEs from other high-grade endometrial carcinomas.
Collapse
Affiliation(s)
- Semen Onder
- Department of Pathology, Istanbul Medical Faculty
| | | | - Fatma Sen
- Department of Medical Oncology, Institute of Oncology, Istanbul University
| | - Samet Topuz
- Department of Gynecologic Oncology, Istanbul Medical Faculty
| | - Seden Kucucuk
- Department of Radiation Oncology, Institute of Oncology, Istanbul University, Istanbul, Turkey
| | - Hamdullah Sozen
- Department of Gynecologic Oncology, Istanbul Medical Faculty
| | - Ridvan Ilhan
- Department of Pathology, Istanbul Medical Faculty
| | | | - Ekrem Yavuz
- Department of Pathology, Istanbul Medical Faculty
| |
Collapse
|
5
|
Shin DM, Suszynska M, Mierzejewska K, Ratajczak J, Ratajczak MZ. Very small embryonic-like stem-cell optimization of isolation protocols: an update of molecular signatures and a review of current in vivo applications. Exp Mol Med 2013; 45:e56. [PMID: 24232255 PMCID: PMC3849570 DOI: 10.1038/emm.2013.117] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 07/11/2013] [Accepted: 07/22/2013] [Indexed: 01/09/2023] Open
Abstract
As the theory of stem cell plasticity was first proposed, we have explored an alternative hypothesis for this phenomenon: namely that adult bone marrow (BM) and umbilical cord blood (UCB) contain more developmentally primitive cells than hematopoietic stem cells (HSCs). In support of this notion, using multiparameter sorting we were able to isolate small Sca1(+)Lin(-)CD45(-) cells and CD133(+)Lin(-)CD45(-) cells from murine BM and human UCB, respectively, which were further enriched for the detection of various early developmental markers such as the SSEA antigen on the surface and the Oct4 and Nanog transcription factors in the nucleus. Similar populations of cells have been found in various organs by our team and others, including the heart, brain and gonads. Owing to their primitive cellular features, such as the high nuclear/cytoplasm ratio and the presence of euchromatin, they are called very small embryonic-like stem cells (VSELs). In the appropriate in vivo models, VSELs differentiate into long-term repopulating HSCs, mesenchymal stem cells (MSCs), lung epithelial cells, cardiomyocytes and gametes. In this review, we discuss the most recent data from our laboratory and other groups regarding the optimal isolation procedures and describe the updated molecular characteristics of VSELs.
Collapse
Affiliation(s)
- Dong-Myung Shin
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Malwina Suszynska
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Kasia Mierzejewska
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Janina Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Mariusz Z Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 South Floyd Street, Room 107, Louisville, KY 40202, USA. E-mail:
| |
Collapse
|
6
|
Forte A, Schettino MT, Finicelli M, Cipollaro M, Colacurci N, Cobellis L, Galderisi U. Expression pattern of stemness-related genes in human endometrial and endometriotic tissues. Mol Med 2009; 15:392-401. [PMID: 19690622 PMCID: PMC2727462 DOI: 10.2119/molmed.2009.00068] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 08/10/2009] [Indexed: 11/06/2022] Open
Abstract
Endometriosis is a chronic disease characterized by the presence of ectopic endometrial tissue outside of the uterus with mixed traits of benign and malignant pathology. In this study we analyzed in endometrial and endometriotic tissues the differential expression of a panel of genes that are involved in preservation of stemness status and consequently considered as markers of stem cell presence. The expression profiles of a panel of 13 genes (SOX2, SOX15, ERAS, SALL4, OCT4, NANOG, UTF1, DPPA2, BMI1, GDF3, ZFP42, KLF4, TCL1) were analyzed by reverse transcription-polymerase chain reaction in human endometriotic (n = 12) and endometrial samples (n = 14). The expression of SALL4 and OCT4 was further analyzed by immunohistochemical methods. Genes UTF1, TCL1, and ZFP42 showed a trend for higher frequency of expression in endometriosis than in endometrium (P < 0.05 for UTF1), whereas GDF3 showed a higher frequency of expression in endometrial samples. Immunohistochemical analysis revealed that SALL4 was expressed in endometriotic samples but not in endometrium samples, despite the expression of the corresponding mRNA in both the sample groups. This study highlights a differential expression of stemness-related genes in ectopic and eutopic endometrium and suggests a possible role of SALL4-positive cells in the pathogenesis of endometriosis.
Collapse
Affiliation(s)
| | | | | | | | - Nicola Colacurci
- Gynaecology, Obstetrics and Reproductive Medicine, Second University of
Naples, Italy
| | - Luigi Cobellis
- Gynaecology, Obstetrics and Reproductive Medicine, Second University of
Naples, Italy
| | | |
Collapse
|