GCT-20 - The molecular and (epi)genetic mechanisms driving microenvironment-triggered reprogramming of seminomas into an embryonal carcinoma cell fate

Publication date: 2019Source: European Urology Supplements, Volume 18, Issue 4Author(s): D. Nettersheim, H. Schorle
Source: European Urology Supplements - Category: Urology & Nephrology Source Type: research

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In conclusion, NKX3.1 shows routine expression in Sertoli cells and P501S shows routine expression in Leydig cells and rete testis epithelium. In addition, these markers can be positive in sex cord-stromal tumors and rete testis adenocarcinoma.
Source: The American Journal of Surgical Pathology - Category: Pathology Tags: Original Articles Source Type: research
Authors: Bremmer F, Bohnenberger H, Küffer S, Oellerich T, Serve H, Urlaub H, Strauss A, Maatoug Y, Behnes CL, Oing C, Radzun HJ, Ströbel P, Balabanov S, Honecker F Abstract Malignant germ cell tumors (GCT) are the most common malignant tumors in young men between 18 and 40 years. The correct identification of histological subtypes, in difficult cases supported by immunohistochemistry, is essential for therapeutic management. Furthermore, biomarkers may help to understand pathophysiological processes in these tumor types. Two GCT cell lines, TCam-2 with seminoma-like characteristics, and NTERA-2, an embry...
Source: Disease Markers - Category: Laboratory Medicine Tags: Dis Markers Source Type: research
CONCLUSIONS: The differences in the expression of nucleolin between two groups of germ cell testicular tumors found in the current study indicate a new aspect of biology of these neoplasms and require further studies on the role of nucleolin in germ cell tumorigenesis. PMID: 31513277 [PubMed - as supplied by publisher]
Source: Folia Histochemica et Cytobiologica - Category: Cytology Tags: Folia Histochem Cytobiol Source Type: research
Conclusion: Our data showed that foci of ITGCN were not observed beyond 2,5 cm from the STM. In particular we demonstrated that exist a linear correlation between size of STMs and distance of the foci of GCNIS from STMs (p=0,0105; r=0,9167). In conclusion mapping the tissue around the tumour not randomly but in targeted areas could reduce the false negative biopsies of the testis with GCNIS, increasing the radicality of the TSS procedure.
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
In conclusion, TCF7L1, highly expressed in non-seminomatous testicular germ cell tumors, might be used as a marker for diagnosis of testicular germ cell tumors, two therapeutically different entities, for better patient management. PMID: 31381875 [PubMed - as supplied by publisher]
Source: Experimental and Molecular Pathology - Category: Pathology Authors: Tags: Exp Mol Pathol Source Type: research
In this study, we generated TCam-2 cells double-deficient for SOX2 and FOXA2 using the CRISPR/Cas9 technique and xenografted those cells into the flank of nude mice. Upon loss of SOX2 and FOXA2, TCam-2 maintained a seminoma cell fate for at least twelve weeks, demonstrating that both factors are key players in the reprogramming to an EC-like cell fate. Therefore, our study adds an important piece to the puzzle of GCT development and plasticity, providing interesting insights in what can be expected in a patient, when GCT cells are confronted with different microenvironments.
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
ConclusionOur findings highlight the value of cross ‐species comparative oncology for the identification of candidate human cancer genes.
Source: Andrology - Category: Urology & Nephrology Authors: Tags: Original Article Source Type: research
Katarina Rejlekova1, Maria C. Cursano2, Ugo De Giorgi3 and Michal Mego1* 12nd Department of Oncology, Faculty of Medicine, National Cancer Institute, Comenius University, Bratislava, Slovakia 2Oncology Unit, Università Campus Bio-Medico, Rome, Italy 3Medical Oncology Department, Instituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRCCS, Meldola, Italy Testicular germ cell tumors (TGCTs) represent the most common solid tumor in young men and is a model of curable cancer. The effectiveness of cisplatin-based chemotherapy secures more than 95% of patients' 5-years survival rate. Howeve...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Abstract In 2016, the WHO classification of testicular germ cell tumors was revised considering advances in the understanding of their tumorigenesis and molecular features. This restructuring led to a division into two major groups with, on one hand, prepubertal-type tumors, not derived from germ cell neoplasia in situ (GCNIS), and on the other hand, postpubertal-type tumors, GCNIS-derived, which occur in youg men (seminoma and non seminomatous germ cell tumors - embryonal carcinoma, yolk sac tumor, teratoma and choriocarcinoma essentially). The term germ cell neoplasia in situ is consensually accepted as a new te...
Source: Bulletin du Cancer - Category: Cancer & Oncology Authors: Tags: Bull Cancer Source Type: research
AbstractBy allelotyping analysis, we previously reported a putative progression pathway from germ cell neoplasia in situ (GCNIS) to seminoma, then to embryonal carcinoma in mixed-type testicular germ cell tumors (TGCTs), and detected that loss of heterozygosity events in seminoma components in mixed tumors were more frequent than those in pure seminomas. To elucidate a role of chromosomal instability in the progression of non-seminomatous germ cell tumor (NSGCT), we performed fluorescence in situ hybridization with centromeric probes for chromosomes 1, 7, 8, 12, 17, and X on a cohort of 52 TGCT cases with 103 histologicall...
Source: Virchows Archiv - Category: Pathology Source Type: research
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