EXPRESSION PATTERNS OF CANCER TESTIS ANTIGENS IN TESTICULAR GERM CELL TUMORS AND ADJACENT TESTICULAR TISSUE

2001 ◽  
pp. 1790-1794 ◽  
Author(s):  
TAKESHI YUASA ◽  
KEISEI OKAMOTO ◽  
TAKAHIRO KAWAKAMI ◽  
MUTSUKI MISHINA ◽  
OSAMU OGAWA ◽  
...  
Keyword(s):  
Germ Cell ◽  
Expression Patterns ◽  
Germ Cell Tumors ◽  
Testicular Tissue ◽  
Testicular Germ Cell Tumors ◽  
Testicular Germ Cell ◽  
Cancer Testis Antigens ◽  
Cancer Testis

EXPRESSION PATTERNS OF CANCER TESTIS ANTIGENS IN TESTICULAR GERM CELL TUMORS AND ADJACENT TESTICULAR TISSUE

2001 ◽  
Vol 165 (5) ◽  
pp. 1790-1794 ◽  
Author(s):  
TAKESHI YUASA ◽  
KEISEI OKAMOTO ◽  
TAKAHIRO KAWAKAMI ◽  
MUTSUKI MISHINA ◽  
OSAMU OGAWA ◽  
...  
Keyword(s):  
Germ Cell ◽  
Expression Patterns ◽  
Germ Cell Tumors ◽  
Testicular Tissue ◽  
Testicular Germ Cell Tumors ◽  
Testicular Germ Cell ◽  
Cancer Testis Antigens ◽  
Cancer Testis

scholarly journals Prognostic Value of Apoptosis-Inducing Factor (AIF) in Germ Cell Tumors

Cancers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 776
Author(s):  
Katarina Letkovska ◽  
Pavel Babal ◽  
Zuzana Cierna ◽  
Silvia Schmidtova ◽  
Veronika Liskova ◽  
...  
Keyword(s):  
Germ Cell ◽  
Nuclear Translocation ◽  
Malignant Tumors ◽  
Expression Patterns ◽  
Germ Cell Tumors ◽  
Testicular Tissue ◽  
Testicular Germ Cell ◽  
Visceral Metastases ◽  
Apoptosis Inducing Factor ◽  
Clinicopathological Variables

Apoptosis is a strictly regulated process essential for preservation of tissue homeostasis. This study aimed to evaluate expression of apoptosis inducing factor (AIF) in testicular germ cell tumors (GCTs) and to correlate expression patterns with clinicopathological variables. Formalin-fixed and paraffin-embedded specimens of non-neoplastic testicular tissue and GCTs obtained from 216 patients were included in the study. AIF expression was detected by immunohistochemistry, scored by the multiplicative quickscore method (QS). Normal testicular tissue exhibits higher cytoplasmic granular expression of AIF compared to GCTs (mean QS = 12.77 vs. 4.80, p < 0.0001). Among invasive GCTs, mean QS was the highest in embryonal carcinoma, yolk sac tumor and seminoma, lower in teratoma and the lowest in choriocarcinoma. No nuclear translocation of AIF was observed. Nonpulmonary visceral metastases were associated with lower AIF expression. Metastatic GCTs patients with high AIF expression had better overall survival compared to patients with low AIF expression (HR = 0.26, 95% CI 0.11–0.62, p = 0.048). We observed significantly lower AIF expression in GCTs compared to normal testicular tissue, which is an uncommon finding in malignant tumors. AIF downregulation might represent one of the mechanisms of inhibition of apoptosis and promotion of cell survival in GCTs.

PAPR1 expression in testicular germ cell tumors.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e15027-e15027
Author(s):  
Michal Mego ◽  
Zuzana Cierna ◽  
Daniela Svetlovska ◽  
Dusan Macak ◽  
Katarina Machalekova ◽  
...  
Keyword(s):  
Germ Cell ◽  
Embryonal Carcinoma ◽  
Parp Inhibitor ◽  
Expression Patterns ◽  
Germ Cell Tumors ◽  
Staining Intensity ◽  
Disease Recurrence ◽  
Testicular Tissue ◽  
Early Event ◽  
Testicular Germ Cell

e15027 Background: Testicular germ-cell tumours (TGCTs) represent a model for the cure of cancer. Nonetheless, a small proportion of patients develop disease recurrence. PARP inhibitors represent a new class of promising drugs in anticancer therapy. The aim of this study was to evaluate poly(ADP-ribose)polymerase-1 (PARP1) expression in TGCTs and to correlate expression patterns with clinico-pathological variables. Methods: In this translational study, tumor specimens from 124 patients with GCTs were identified. PARP1 expression was detected by immunohistochemistry using monoclonal antibody, scored by the multiplicative quickscore (QS) method and compared to PARP1 expression in testicular tissue of normal testis. The QS was calculated by multiplying the percentage score by the staining intensity score to yield a minimum value of 0 and a maximum value of 18. Based on the QS nuclear PARP1 expression was graded as low (0–9) or high (10–18). Results: We observed higher expression of PARP1 in testicular tumors compared to normal tissue of testis (mean QS = 10.04 vs. 3.60, p < 0.0000001). Mean QS ± SD for each histological subtype was following: intratubular germ cell neoplasia (ITGCN) = 18.00 ± 0.00, embryonal carcinoma = 9.62 ± 5.64, seminoma = 9.74 ± 6.51, yolc sac tumor = 7.8 ± 7.20, teratoma = 5.87 ± 5.34, and choriocarcinoma = 4.50 ± 8.33. The PARP1 overexpression (QS > 9) was most often detected in ITGCN (100% of specimen with PARP1 overexpression), seminona (52.6%), embryonal carcinoma (47.0%), yolc sac tumor (33.3%), teratoma (26.7%), and choriocarcinoma (25.0%), compared to 1.9% of normal testicular tissue specimen. There was no association between PARP1 expression and clinical variables. Conclusions: PARP1 overexpression is an early event in the development of TGCTs. We suggest that PARP1 could represent a novel treatment target in TGCTs and the assessment of PARP1 expression in tumor samples may lead to the consideration of TGCTs patients for PARP inhibitor therapy.

Serum Lactate Dehydrogenase Isoenzyme 1 and Relapse in Patients with Nonseminomatous Testicular Germ Cell Tumors Clinical Stage I

2001 ◽  
Vol 40 (4) ◽  
pp. 536-540 ◽  
Author(s):  
Finn Edler von Eyben ◽  
Ebbe Lindegaard Madsen ◽  
Ole Blaabjerg ◽  
Per Hyltoft Petersen ◽  
Hans von der Maase ◽  
...  
Keyword(s):  
Lactate Dehydrogenase ◽  
Germ Cell ◽  
Clinical Stage ◽  
Germ Cell Tumors ◽  
Serum Lactate ◽  
Stage I ◽  
Serum Lactate Dehydrogenase ◽  
Testicular Germ Cell Tumors ◽  
Testicular Germ Cell ◽  
Dehydrogenase Isoenzyme

Molecular Mechanisms of Resistance in Testicular Germ Cell Tumors - clinical Implications

2018 ◽  
Vol 18 (10) ◽  
pp. 967-978 ◽  
Author(s):  
Katarina Kalavska ◽  
Vincenza Conteduca ◽  
Ugo De Giorgi ◽  
Michal Mego
Keyword(s):  
Germ Cell ◽  
Molecular Mechanisms ◽  
Cisplatin Resistance ◽  
Apoptotic Cell ◽  
Germ Cell Tumors ◽  
Treatment Resistance ◽  
Experimental Models ◽  
Testicular Germ Cell Tumors ◽  
Testicular Germ Cell ◽  
Repair Capacity

Testicular germ cell tumors (TGCTs) represent the most common malignancy in men aged 15-35. Due to these tumors’ biological and clinical characteristics, they can serve as an appropriate system for studying molecular mechanisms associated with cisplatin-based treatment resistance. This review describes treatment resistance from clinical and molecular viewpoints. Cisplatin resistance is determined by various biological mechanisms, including the modulation of the DNA repair capacity of cancer cells, alterations to apoptotic cell death pathways, deregulation of gene expression pathways, epigenetic alterations and insufficient DNA binding. Moreover, this review describes TGCTs as a model system that enables the study of the cellular features of cancer stem cells in metastatic process and describes experimental models that can be used to study treatment resistance in TGCTs. All of the abovementioned aspects may help to elucidate the molecular mechanisms underlying cisplatin resistance and may help to identify promising new therapeutic targets.

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