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Krasic J, Skara Abramovic L, Himelreich Peric M, Vanjorek V, Gangur M, Zovko D, Malnar M, Masic S, Demirovic A, Juric B, Ulamec M, Coric M, Jezek D, Kulis T, Sincic N. Testicular Germ Cell Tumor Tissue Biomarker Analysis: A Comparison of Human Protein Atlas and Individual Testicular Germ Cell Tumor Component Immunohistochemistry. Cells 2023; 12:1841. [PMID: 37508506 PMCID: PMC10378501 DOI: 10.3390/cells12141841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/06/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
The accurate management of testicular germ cell tumors (TGCTs) depends on identifying the individual histological tumor components. Currently available data on protein expression in TGCTs are limited. The human protein atlas (HPA) is a comprehensive resource presenting the expression and localization of proteins across tissue types and diseases. In this study, we have compared the data from the HPA with our in-house immunohistochemistry on core TGCT diagnostic genes to test reliability and potential biomarker genes. We have compared the protein expression of 15 genes in TGCT patients and non-neoplastic testicles with the data from the HPA. Protein expression was converted into diagnostic positivity. Our study discovered discrepancies in three of the six core TGCT diagnostic genes, POU5F1, KIT and SOX17 in HPA. DPPA3, CALCA and TDGF1 were presented as potential novel TGCT biomarkers. MGMT was confirmed while RASSF1 and PRSS21 were identified as biomarkers of healthy testicular tissue. Finally, SALL4, SOX17, RASSF1 and PRSS21 dysregulation in the surrounding testicular tissue with complete preserved spermatogenesis of TGCT patients was detected, a potential early sign of neoplastic transformation. We highlight the importance of a multidisciplinary collaborative approach to fully understand the protein landscape of human testis and its pathologies.
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Affiliation(s)
- Jure Krasic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Lucija Skara Abramovic
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia
| | - Marta Himelreich Peric
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Health Centre Zagreb-West, 10000 Zagreb, Croatia
| | - Vedran Vanjorek
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Marko Gangur
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Dragana Zovko
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Marina Malnar
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Silvija Masic
- Ljudevit Jurak Clinical Department of Pathology and Cytology, University Clinical Hospital Center Sestre Milosrdnice, 10000 Zagreb, Croatia
| | - Alma Demirovic
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Ljudevit Jurak Clinical Department of Pathology and Cytology, University Clinical Hospital Center Sestre Milosrdnice, 10000 Zagreb, Croatia
- School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Bernardica Juric
- Ljudevit Jurak Clinical Department of Pathology and Cytology, University Clinical Hospital Center Sestre Milosrdnice, 10000 Zagreb, Croatia
| | - Monika Ulamec
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Ljudevit Jurak Clinical Department of Pathology and Cytology, University Clinical Hospital Center Sestre Milosrdnice, 10000 Zagreb, Croatia
- Department of Pathology, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Marijana Coric
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Pathology and Cytology, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Davor Jezek
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Histology and Embryology, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Tomislav Kulis
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Urology, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
- Department of Urology, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Nino Sincic
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Biology, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
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Meta-Analysis of Gene Expressions in Testicular Germ Cell Tumor Histologies. Int J Mol Sci 2020; 21:ijms21124487. [PMID: 32599785 PMCID: PMC7349960 DOI: 10.3390/ijms21124487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 02/02/2023] Open
Abstract
There is no consensus as to how a precursor lesion, germ cell neoplasia in situ (GCNIS), develops into the histologic types of testicular germ cell tumor type II (TGCT). The present meta-analysis examined RNA expressions of 24 candidate genes in three datasets. They included 203 samples of normal testis (NT) and histologic types of TGCT. The Fisher’s test for combined p values was used for meta-analysis of the RNA expressions in the three datasets. The histologic types differed in RNA expression of PRAME, KIT, SOX17, NANOG, KLF4, POU5F1, RB1, DNMT3B, and LIN28A (p < 0.01). The histologic types had concordant differences in RNA expression of the genes in the three datasets. Eight genes had overlap with a high RNA expression in at least two histologic types. In contrast, only seminoma (SE) had a high RNA expression of KLF4 and only embryonal carcinoma (EC) had a high RNA expression of DNMT3B. In conclusion, the meta-analysis showed that the development of the histologic types of TGCT was driven by changes in RNA expression of candidate genes. According to the RNA expressions of the ten genes, TGCT develops from NT over GCNIS, SE, EC, to the differentiated types of TGCT.
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Hilbold E, Bergmann M, Fietz D, Kliesch S, Weidner W, Langeheine M, Rode K, Brehm R. Immunolocalization of DMRTB1 in human testis with normal and impaired spermatogenesis. Andrology 2019; 7:428-440. [PMID: 30920770 DOI: 10.1111/andr.12617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 03/01/2019] [Accepted: 03/04/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND The transcription factor DMRTB1 plays a pivotal role in coordinating the transition between mitosis and meiosis in murine germ cells. No reliable data are available for human testis. OBJECTIVES The present study aims to examine the testicular expression pattern of DMRTB1 in men showing normal and impaired spermatogenesis. MATERIALS AND METHODS Immunohistochemistry was performed using 54 human testicular biopsy specimens and a commercial rabbit polyclonal anti-DMRTB1 primary antibody. RT-PCR complemented immunohistochemistry. To further characterize immunopositive cells and possible co-localization, the proliferation marker Ki-67, the tumor marker PLAP, and an anti-DMRT1 antibody were used. RESULTS In men with normal spermatogenesis, a strong immunoreactivity was detectable in a subset of spermatogonia (38.34 ± 2.14%). Some spermatocytes showed a weak immunostaining. Adjacent Sertoli cells were immunonegative. Compared with a hematoxylin and eosin overview staining, these immunopositive cells were almost exclusively identified as Apale and B spermatogonia and primary spermatocytes in (pre-)leptotene, zygotene, and pachytene stages. In patients with spermatogenic arrest at spermatogonial level, an altered staining pattern was found. No immunoreactivity was detected in Sertoli cells in Sertoli cell-only syndrome. In germ cell neoplasia in situ (GCNIS) tubules, except for a few (0.4 ± 0.03%), pre-invasive tumor cells were immunonegative. Seminoma cells showed no immunostaining. DISCUSSION According to previous findings in mice, it seems reasonable that DMRTB1 is expressed in these normal germ cell populations. Moreover, altered staining pattern in spermatogenic arrest at spermatogonial stage suggests a correlation with mitosis and transformation into B spermatogonia. The absence of DMRTB1 in GCNIS cells and tumor cells might be associated with uncontrolled neoplastic cell proliferation and progression into invasive germ cell tumors. Further research is required to elucidate, for example, the role of DMRTB1 in the malignant transformation of human germ cells. CONCLUSION Our data indicate a relevant role for DMRTB1 regarding the entry of spermatogonia into meiosis in men.
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Affiliation(s)
- E Hilbold
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - M Bergmann
- Institute for Veterinary Anatomy, Histology and Embryology, Justus Liebig University, Giessen, Germany
| | - D Fietz
- Institute for Veterinary Anatomy, Histology and Embryology, Justus Liebig University, Giessen, Germany
| | - S Kliesch
- Department of Clinical and Surgical Andrology, Centre of Reproductive Medicine and Andrology, University Hospital Münster, Münster, Germany
| | - W Weidner
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University, Giessen, Germany
| | - M Langeheine
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - K Rode
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - R Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
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