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Hirschfeld M, Schulze-Hagen A, Jaeger M, Bettendorf H, Ouyang Y, Gitsch G, Stickeier E. 1106 POSTER Cysteine Rich 61 (CCN1) Protein Expression as a Predictive Marker in Endometrial Cancer. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70749-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Ouyang YQ, zur Hausen A, Orlowska-Volk M, Jäger M, Bettendorf H, Hirschfeld M, Tong XW, Stickeler E. Expression levels of hnRNP G and hTra2-beta1 correlate with opposite outcomes in endometrial cancer biology. Int J Cancer 2011; 128:2010-9. [PMID: 20607830 DOI: 10.1002/ijc.25544] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
HnRNP G is a member of heterogeneous nuclear ribonucleoprotein (hnRNP) family with potent tumor suppressive activities. Human transformer-2-beta1 (hTra2-beta1) belongs to the arginine-serine rich like proteins and is found over-expressed in various human cancers. It was recently shown that hnRNP G and hTra2-beta1 exert antagonistic effects on alternative splicing. In our study we explored the impact of these two factors in tumor biology of endometrial cancer (EC). EC tissues (n = 139) were tested for hnRNP G and hTra2-beta1 expression on mRNA level by real time PCR and on protein level by immunohistochemistry. HTra2-beta1 mRNA level was found being induced in advanced International Federation of Gynecology and Obstetrics (FIGO) stages (p = 0.016). HnRNP G protein nuclear expression was found more prominent in patients without distant organ metastases (p = 0.033) and in FIGO Stages I/II group (p < 0.001). HTra2-beta1 protein nuclear levels were elevated in poorly differentiated (p = 0.044) and lymph node metastases (p = 0.003) cancers. Kaplan-Meier survival curves revealed that elevated hnRNP G mRNA (p = 0.029) and protein (p = 0.022) levels were associated with a favorable patient outcome. Multivariate Cox-regression analyses identified nuclear hnRNP G level [hazard ratio (HR) 0.468, p = 0.026) as well as hTra2-beta1 level (hazard ratio 5.760, p = 0.004) as independent prognostic factors for EC progression-free survival. Our results indicate that the antagonistic functional effects of hnRNP G and hTra2-beta1 on alternative splicing correlate directly to their opposite clinical effects on EC patient outcome.
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Affiliation(s)
- Yi Qin Ouyang
- Department of Obstetrics and Gynecology, Freiburg University Medical Center, 79106 Freiburg, Germany
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Zhang B, zur Hausen A, Orlowska-Volk M, Jäger M, Bettendorf H, Stamm S, Hirschfeld M, Yiqin O, Tong X, Gitsch G, Stickeler E. Alternative splicing-related factor YT521: an independent prognostic factor in endometrial cancer. Int J Gynecol Cancer 2010; 20:492-9. [PMID: 20686370 DOI: 10.1111/igc.0b013e3181d66ffe] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND YT521 is a splicing factor involved in alternative splicing regulation of several tumor biological important genes. Two messenger RNA (mRNA) isoforms due to YT521 exon6 alternative splicing exist, with so far unknown functional consequences. Further evidence exists for a direct influence of YT521 expression in tumorigenesis because its mRNA level is changed in tumors compared with physiological tissue. We investigated the potential impact of YT521 expression on tumor biological parameters in endometrial cancer (EC). METHODS Real-time reverse transcription-polymerase chain reaction specifically detecting YT521 exon6-retention and exon6-skipping mRNA isoforms and immunohistochemistry were performed in a cohort of 130 EC tissue samples. RESULTS Whereas YT521 exon6-retention mRNA was detectable in 86 (66.2%), the exon6-skipping isoform mRNA was expressed in only 8 (6.2%) of all EC samples. On the protein level, 104 (80%) of EC samples showed nuclear expression. The mRNA levels of exon6-skipping isoform were not correlated to any of the clinicopathological parameters of EC. In contrast, YT521 exon6-retention mRNA expression was positively correlated to metastasis (R = 0.196, P = 0.026) and inversely correlated to the protein expression levels (R = -0.205, P = 0.019). In univariate analyses, higher levels of YT521 exon6-retention mRNA were correlated to a poorer progression-free survival (P = 0.003), and this is confirmed by multivariate analyses (P = 0.019). The negative YT521 protein expression was correlated to poorer overall and disease-specific survival (P = 0.036 and P = 0.034), respectively, in univariate analyses. They are also confirmed by multivariate analyses (P = 0.021 and P = 0.010, respectively). CONCLUSIONS We characterized for the first time in a clinical setting a new but rare exon6-skipping mRNA splicing isoform of YT521. Furthermore, we identified YT521 as a potential new independent prognostic factor for patients with EC: the lack of YT521 protein in tumor cells was highly predictive for a poor overall and disease-specific survival and independent from the histological subtypes.
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Affiliation(s)
- Bo Zhang
- Department of Obstetrics and Gynecology, Freiburg University Medical Center, Freiburg, Germany
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Zahradnik HP, SchÄFer WR, Casper FW, Seufert RJ, Gaillard T, Bettendorf H. Urinary Excretion of 6-Keto-Pgf1α, TxB2, and PGE2in Pregnancy-Induced Hypertension and Preeclampsia. Hypertens Pregnancy 2009. [DOI: 10.3109/10641959409009573] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hirschfeld M, zur Hausen A, Bettendorf H, Jäger M, Stickeler E. Alternative splicing of Cyr61 is regulated by hypoxia and significantly changed in breast cancer. Cancer Res 2009; 69:2082-90. [PMID: 19244129 DOI: 10.1158/0008-5472.can-08-1997] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hypoxia is known to induce the transcriptional activation of pathways involved in angiogenesis, growth factor signaling, and tissue invasion and is therefore a potential key regulator of tumor growth. Cyr61 (cysteine rich 61) is a secreted, matricellular protein with proangiogenic capabilities and is transcriptionally induced under hypoxic conditions. High expression levels of Cyr61 were already detected in various cancer types and linked to tumor progression and advanced stages in breast cancer. Besides hypoxia, there is some evidence that posttranscriptional pre-mRNA processing could be involved in the regulation of Cyr61 expression, but was thus far not investigated. We studied the expression pattern of Cyr61 mRNA and protein in breast cancer cell lines as well as in matched pairs of noncancerous breast tissue, preinvasive lesions, and invasive breast cancers, respectively. In addition, we analyzed the potential regulatory capability of hypoxia on Cyr61 expression by functional tissue culture experiments. Our study revealed a stage-dependent induction of Cyr61 mRNA and protein in breast cancer tumorigenesis and for the first time alternative splicing of the Cyr61 gene due to intron retention. Breast carcinogenesis was accompanied by a shift from an intron 3 retaining toward an intron 3 skipping mRNA phenotype consecutively leading to processing of the biological active Cyr61 protein. The functional analyses strongly emphasize that hypoxia serves as a specific inducer of alternative Cyr61 splicing toward the intron skipping mRNA isoform with potential biological consequences in tumor cells.
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Affiliation(s)
- Marc Hirschfeld
- Department of Obstetrics and Gynecology and Institute of Pathology, Freiburg University Medical Center, Freiburg, Germany
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Herr D, Keck C, Bettendorf H, Denschlag D, Pietrowski D. Association of TNF-α Gene Polymorphisms with the Occurrence of Uterine Leiomyoma. Geburtshilfe Frauenheilkd 2007. [DOI: 10.1055/s-2006-955924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Herr D, Bettendorf H, Denschlag D, Keck C, Pietrowski D. Cytochrome P2A13 and P1A1 gene polymorphisms are associated with the occurrence of uterine leiomyoma. Arch Gynecol Obstet 2006; 274:367-71. [PMID: 16835796 DOI: 10.1007/s00404-006-0201-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2006] [Accepted: 06/21/2006] [Indexed: 10/24/2022]
Abstract
PROBLEM To investigate the association between the occurrence of uterine leiomyoma and two SNPs of the CYP 2A13 and CYP 1A1 genes. METHOD OF STUDY Prospective case control study with 132 women with clinically and surgically diagnosed uterine leiomyoma and 260 controls. Genotyping was performed by polymerase chain reaction (PCR) based amplification of CYP 2A13 and CYP 1A1 genes, and restriction fragment length polymorphism (RFLP) analysis. RESULTS Comparing women with uterine leiomyoma and controls, we demonstrate statistical significant differences of allele frequency and genotype distribution for the CYP 1A1 polymorphism (P = 0.025 and P = 0.046, respectively). Furthermore, for the CYP 2A13 polymorphism we found a significant difference concerning allele frequency (P = 0.033). However, for the genotype distribution, only borderline significance was observed (P = 0.064). CONCLUSIONS The CYP 2A13 and CYP 1A1 SNPs are associated with uterine leiomyoma in a Caucasian population and may contribute to the understanding of the pathogenic mechanisms of uterine leiomyoma.
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Affiliation(s)
- D Herr
- Department of Obstetrics and Gynecology, Ulm University Medical Center, Ulm, Germany.
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Phan B, Rakenius A, Pietrowski D, Bettendorf H, Keck C, Herr D. hCG-dependent regulation of angiogenic factors in human granulosa lutein cells. Mol Reprod Dev 2006; 73:878-84. [PMID: 16596638 DOI: 10.1002/mrd.20465] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
As prerequisite for development and maintenance of many diseases angiogenesis is of particular interest in medicine. Pathologic angiogenesis takes place in chronic arthritis, collagen diseases, arteriosclerosis, retinopathy associated with diabetes, and particularly in cancers. However, angiogenesis as a physiological process regularly occurs in the ovary. After ovulation the corpus luteum is formed by rapid vascularization of initially avascular granulosa lutein cell tissue. This process is regulated by gonadotropic hormones. In order to gain further insights in the regulatory mechanisms of angiogenesis in the ovary, we investigated these mechanisms in cell culture of human granulosa lutein cells. In particular, we determined the expression and production of several angiogenic factors including tissue inhibitor of matrix metalloproteinases-1 (TIMP-1), Leptin, connective tissue growth factor (CTGF), meningioma-associated complimentary DNA (Mac25), basic fibroblast growth factor (bFGF), and Midkine. In addition, we showed that human chorionic gonadotropin (hCG) has distinct effects on their expression and production. hCG enhances the expression and production of TIMP-1, whereas it downregulates the expression of CTGF and Mac25. Furthermore it decreases the expression of Leptin. Our results provide evidence that hCG determines growth and development of the corpus luteum by mediating angiogenic pathways in human granulosa lutein cells. Hence we describe a further approach to understand the regulation of angiogenesis in the ovary.
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Affiliation(s)
- B Phan
- Department of Obstetrics and Gynecology, Freiburg University Medical Center, Freiburg, Germany
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Herr D, Keck C, Wiehle P, Phan B, Bettendorf H, Pietrowski D. Expression Profiles of Apoptosis Related Genes and Investigation of HIF-2α Signal Transduction in the Ovarian Cancer Cell Line OvCa-3. Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-873039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Denschlag D, Bettendorf H, Watermann D, Keck C, Tempfer C, Pietrowski D. Polymorphism of the p53 tumor suppressor gene is associated with susceptibility to uterine leiomyoma. Fertil Steril 2005; 84:162-6. [PMID: 16009172 DOI: 10.1016/j.fertnstert.2005.01.103] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Revised: 12/15/2004] [Accepted: 12/15/2004] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate the association between the presence of uterine leiomyoma and two single nuclear polymorphisms of the p53 tumor suppressor and the angiopoietin-2 (ANGPT2) genes. DESIGN Prospective case control study. SETTING Academic research institution. PATIENT(S) One hundred thirty-two women with clinically and surgically diagnosed uterine leiomyomas and 280 controls. INTERVENTION(S) Peripheral venous puncture. MAIN OUTCOME MEASURE(S) Genotyping was performed by polymerase chain reaction-based amplification of the Arg and Pro variants at codon 72 of the p53 gene and by restriction fragment length polymorphism analysis of the G/G and G/A alleles in exon 4 of the ANGPT2 gene. RESULT(S) Comparing women with uterine leiomyomas and controls, no statistically significant difference with respect to allele frequency and genotype distribution were ascertained for the ANGPT2 polymorphism (P=.2 and P=.5, respectively). However, for the p53 tumor suppressor gene polymorphism, statistically significant differences in terms of a higher Pro allele frequency and a higher prevalence of the Pro/Pro genotype among women with uterine leiomyoma (32.0% vs. 16.0%, respectively, and 21.3% vs. 4.7%, respectively) were ascertained (P=.001, OR 1.74; 95% CI 1.24-2.45, P=.001; OR 3.84, 95% CI 1.81-8.14; respectively). CONCLUSION(S) Carriage of the p53 polymorphism at codon 72 predicts the susceptibility to leiomyoma in a Caucasian population and may contribute to the pathogenesis of uterine leiomyoma.
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Affiliation(s)
- Dominik Denschlag
- Department of Obstetrics and Gynecology, University of Freiburg School of Medicine, Freiburg, Germany.
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Pietrowski D, Bettendorf H, Keck C, Bürkle B, Unfried G, Riener EK, Hefler LA, Tempfer C. Lack of association of TNFα gene polymorphisms and recurrent pregnancy loss in Caucasian women. J Reprod Immunol 2004; 61:51-58. [PMID: 15027477 DOI: 10.1016/j.jri.2003.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The tumor necrosis factor alpha (TNFalpha) gene plays an important role in immunology and inflammation. Variant alleles of TNFalpha are associated with altered RNA and serum protein levels in humans. Conflicting results have been obtained regarding the role of TNFalpha during pregnancy and recurrent pregnancy loss (RPL). This study investigated the relationship between RPL and two polymorphisms in the promoter of the TNFalpha gene (TNFalpha -308 and -863). Genotyping was performed in 168 RPL women and 212 ethnically matched healthy individuals. In addition, we performed analysis of TNFalpha serum protein levels. We demonstrate that neither the polymorphism -308 nor the polymorphism -863 of the TNFalpha gene is associated with RPL in Caucasian women. In addition, we did not find any association between TNFalpha serum levels and the occurrence of RPL in a subset of 36 RPL women and 36 healthy individuals. We conclude that TNFalpha polymorphisms and resting blood TNFalpha levels do not correlate with the propensity to recurrent pregnancy loss in Caucasian women.
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Affiliation(s)
- Detlef Pietrowski
- Department of Gynecology and Obstetrics, University of Freiburg School of Medicine, Freiburg, Germany.
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Krajewska M, Zapata JM, Meinhold-Heerlein I, Hedayat H, Monks A, Bettendorf H, Shabaik A, Bubendorf L, Kallioniemi OP, Kim H, Reifenberger G, Reed JC, Krajewski S. Expression of Bcl-2 family member Bid in normal and malignant tissues. Neoplasia 2002; 4:129-40. [PMID: 11896568 PMCID: PMC1550319 DOI: 10.1038/sj.neo.7900222] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2001] [Accepted: 10/31/2001] [Indexed: 01/07/2023]
Abstract
Bid is the only known Bcl-2 family member that can function as an agonist of proapoptotic Bcl-2-related proteins such as Bax and Bak. Expression of the proapoptotic Bcl-2 family protein Bid was assessed by immunoblotting and immunohistochemical methods in normal murine and human tissues, and in several types of human cancers and tumor cell lines. Bid expression in normal tissues varied widely, with prominent Bid immunostaining occurring in several types of short-lived cells (e.g., germinal center B cells, peripheral blood granulocytes, differentiated keratinocytes) and in apoptosis-sensitive cells (e.g., adult neurons). Analysis of Bid expression by immunostaining of 100 colon, 95 ovarian, and 254 prostate cancers, as well as 59 brain tumors and 50 lymphomas, revealed evidence of altered Bid regulation in some types of cancers. Correlations with clinical outcome data revealed association of higher levels of Bid with longer recurrence-free survival in men with locally advanced (T3 stage) prostate cancer (P=0.04). Immunoblot analysis of Bid protein levels in the NCI's panel of 60 human tumor cell lines revealed a correlation between higher levels of Bid and sensitivity to ribonucleotide reductase (RR)-inhibiting drugs (P<0.0005). Overexpression of Bid in a model tumor cell line by gene transfection resulted in increased sensitivity to apoptosis induction by a RR inhibitor. Taken together, these observations suggest a potential role for Bid in tumor responses to specific chemotherapeutic drugs, and lay a foundation for future investigations of this member of the Bcl-2 family in healthy and diseased tissues.
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Affiliation(s)
- Maryla Krajewska
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
| | - Juan M Zapata
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
| | - Ivo Meinhold-Heerlein
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
| | - Hirad Hedayat
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
| | - Anne Monks
- SAIC Frederick Inc., MCI Frederick MD 21702, USA
| | | | - Ahmed Shabaik
- Department of Pathology, University of California, San Diego, CA, USA
| | - Lukas Bubendorf
- Institute of Pathology, University of Basel, Basel, Switzerland
| | - Olli-P Kallioniemi
- Laboratory of Cancer Genetics, National Human Genome Research Institute, National Institutes of Health, 49 Convent Drive MSC 4470, R. 4A24, Bethesda, MD 20892-4470, USA
| | - Hoguen Kim
- Department of Pathology, Yonsei University, College of Medicine, C.P.O. Box 8044, Seoul, Korea
| | - Guido Reifenberger
- Department of Neuropathology, Heinrich-Heine-University, Moorenstrasse 5, D-40225 Düsseldorf, Germany
| | - John C Reed
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
| | - Stanislaw Krajewski
- The Burnham Institute, Program on Apoptosis and Cell Death Regulation, La Jolla, CA, USA
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Meinhold-Heerlein I, Ninci E, Ikenberg H, Brandstetter T, Ihling C, Schwenk I, Straub A, Schmitt B, Bettendorf H, Iggo R, Bauknecht T. Evaluation of methods to detect p53 mutations in ovarian cancer. Oncology 2001; 60:176-88. [PMID: 11244334 DOI: 10.1159/000055316] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE The p53 status is increasingly regarded as a marker predictive of response to particular cancer therapies, but for this approach it is self-evident that the p53 status must be determined correctly. METHODS We have tested ovarian cancers with single-strand conformation polymorphism analysis (SSCP), immunohistochemical staining with DO-1 anti-p53 antibody (IHC), and yeast p53 functional assay (FASAY). RESULTS These techniques commonly used to detect p53 mutations showed important differences in their sensitivity. Of 53 tumors tested with three indirect techniques, 27 (50%), 33 (62%) and 41 (77%) were positive by SSCP, IHC, and FASAY, respectively. In a subset of 32 tumors strongly suspected of containing mutations, 25 (78%), 26 (81%), 29 (91%) and 30 (94%) were positive by SSCP, immunostaining, DNA sequencing and yeast assay, respectively. CONCLUSIONS Under comparable routine conditions, the FASAY reached the highest sensitivity. Since no single technique detected all mutations, we recommend the use of at least two different techniques in situations where the p53 status will affect patient management.
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Brandstetter T, Ninci E, Bettendorf H, Perewusnyk G, Stolte J, Herchenbach D, Sellin D, Wagner E, Köchli OR, Bauknecht T. Granulocyte colony-stimulating factor (G-CSF) receptor gene expression of ovarian carcinoma does not correlate with G-CSF caused cell proliferation. Cancer 2001; 91:1372-83. [PMID: 11283939 DOI: 10.1002/1097-0142(20010401)91:7<1372::aid-cncr1141>3.0.co;2-e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Recombinant human granulocyte colony-stimulating factor (rhG-CSF) is a growth factor commonly used to avoid leukopenia after chemotherapy. Endogenous G-CSF is produced by macrophages and granulocytes that infiltrate tumors. It has been reported that rhG-CSF stimulates the proliferation of several cell lines as well as bladder carcinoma cells. Conversely, in some hematopoietic cell lines such as U-937, WEHI-3B, and K-562 no effect or in some cases a differentiation pattern was found. Moreover, the role of rhG-CSF on the proliferation of solid tumors is not well understood. METHODS In this study, 10 ovarian carcinoma biopsies were characterized for the presence of G-CSF and G-CSF receptor by reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemical analysis. Proliferation was analyzed by ATP viability assays. RESULTS Performing RT-PCR, these biopsies and four ovarian carcinoma cell lines were analyzed for endogenous G-CSF production, which was found in some biopsies and in all cell lines. Despite the presence of the G-CSF receptor in all biopsies and cell lines, no proliferation was found after rhG-CSF incubation of the cell lines or the tumor samples for 3 and for 6 days, respectively. CONCLUSIONS Summarizing the authors' in vitro studies, rhG-CSF does not affect the proliferation of ovarian carcinoma cells in vitro.
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Affiliation(s)
- T Brandstetter
- Department of Biology II, University of Freiburg, Freiburg Germany.
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Abstract
Recombinant human granulocyte colony-stimulating factor (rhG-CSF) is clinically used to overcome neutropenic periods during chemotherapy. In vitro studies using cell lines as a model system have recently suggested that G-CSF can promote ovarian cancer growth. The objective of this work is to determine whether tumor cells express G-CSF-receptors (G-CSFR). A set of ovarian tumor biopsies and ovarian cancer cell lines was analyzed by RT-PCR, immunohistochemistry and immunofluorescence. The presence of a 276 bp-amplicon (exon 8-10) obtained by RT-PCR showed that 12 out of 16 ovarian tumor biopsies and two out of four ovarian cancer cell lines expressed G-CSFR-mRNA. G-CSFR-protein was detected in tumor cells of the 12 biopsies that also contained G-CSFR-mRNA. A second 409 bp-amplicon (exon 17) obtained by RT-PCR from the variable C-terminal cytoplasmic region of G-CSFR could be amplified only in four out of 16 biopsies and in none of the ovarian cancer cell lines studied. The results presented here indicate that G-CSFR is frequently expressed in ovarian cancer cells. Moreover, the failure of RT-PCR amplification of the 409 bp-amplicon in samples that express G-CSFR-mRNA suggests that C-terminal truncated receptor forms are also expressed.
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Affiliation(s)
- E. B. Ninci
- Klinik für Tumorbiologie, Freiburg, and Department of Obstetrics and Gynecology, University of Freiburg, Freiburg, Germany;The Burnham Institute, J. Reed Laboratory, La Jolla, California, USA;Practice for Pathology, VS-Schwenningen, and Department of Obstetrics and Gynecology, University of Bonn, Bonn-Venusberg, Germany
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Teleman S, Mihailovici MS, Hilgarth M, Freudenberg N, Bettendorf H. [p53 and steroid receptors support double endometrial carcinogenesis]. Rev Med Chir Soc Med Nat Iasi 1999; 103:131-5. [PMID: 10756939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
AIM This study investigated the p53 positivity correlated with the receptor status, in different grades and stages of endometrial carcinoma. METHODS The study included 88 endometrioid-type carcinomas and 5 non-endometrioid-type carcinomas. Paraffin sections were used for the ordinary histological diagnosis and for immunohistochemical diagnosis by avidin-biotin-peroxidase technique. RESULTS p53 positivity was identified in 10 endometrioid-type carcinomas (11.4%) and 3 non-endometrioid type carcinomas (60%). Most of the p53 positive cases were receptor negative and observed in advanced stages and histological grades. No associated endometrial hyperplasia was p53 positive, while a positive intraepithelial non-endometrioid carcinoma was identified. CONCLUSIONS p53 positivity is most frequently identified in non-endometrioid type, receptor negative adenocarcinomas, even in a precursor lesion as it is intraepithelial carcinoma, while in endometrioid, receptor positive carcinomas it appear in late stages of development, never being identified in precursor lesions.
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Affiliation(s)
- S Teleman
- Disciplina de Morfopatologie, Facultatea de Medicină, Universitatea de Medicină şi Farmacie Gr. T. Popa, Iaşi
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Teleman S, Hilgarth M, Freudenberg N, Bettendorf H, Mihailovici MS. [An immunohistochemical study of the steroid hormone receptors in endometrial hyperplasia]. Rev Med Chir Soc Med Nat Iasi 1999; 103:138-41. [PMID: 10756900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
AIM Evaluation of the estrogen and progesterone receptors (ER and PR) in different degrees of endometrial hyperplasias. METHODS 10 cases of each degree of endometrial hyperplasia (simple, complex and atypical) were analyzed using the avidin-biotin-peroxidase technique and monoclonal antibodies applied to formalin-fixed, paraffin-embedded tissue. RESULTS We found similar, high level of both ER and PR in simple and complex hyperplasias and a significant decrease of these in atypical hyperplasia. CONCLUSIONS Endometrial hyperplasias develop in a setting of estrogen excess. This explains the high level of endometrial receptors and the response to progesterone in typical hyperplasia. In atypical hyperplasia, the decrease of steroid receptors results in a low sensibility of this lesion to progestative therapy, but there are cases with high receptor levels which could have a chance for hormonal therapy.
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Affiliation(s)
- S Teleman
- Disciplina Morfopatologie, Universitatea de Medicină şi Farmacie Gr. T. Popa, Iaşi
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Keck C, Rajabi Z, Pfeifer K, Bettendorf H, Brandstetter T, Breckwoldt M. Expression of interleukin-6 and interleukin-6 receptors in human granulosa lutein cells. Mol Hum Reprod 1998; 4:1071-6. [PMID: 9835360 DOI: 10.1093/molehr/4.11.1071] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cytokines are important regulators of reproductive functions. Significant amounts of interleukin-6 (IL-6) have been detected in the serum and ascites of patients with ovarian hyperstimulation syndrome (OHSS). These findings suggest the involvement of IL-6 as a mediator in the pathogenesis of OHSS. This study was performed to analyse IL-6 and IL-6 receptor (IL-6-R) expression in human granulosa lutein cells (GC). GC were cultured after isolation from follicular fluid. IL-6 concentrations in follicular fluid and serum from individual patients and GC supernatants were measured by enzyme-linked immunosorbent assay. We found detectable concentrations of IL-6 in serum and follicular fluid of all patients. Expression of IL-6 in GC was shown immunocytochemically. IL-6 mRNA was detected in GC by in-situ hybridization. Gene expression for IL-6 and IL-6-R in GC was demonstrated using reverse transcription-polymerase chain reaction. IL-6 significantly inhibited human chorionic gonadotrophin (HCG)-induced progesterone secretion of GC. The results of our study suggest that IL-6 is expressed in HGC and that this cytokine is able to modulate GC function via its specific receptor. This is the first report that describes the precence of IL-6-R in human granulosa lutein cells.
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Meinhold-Heerlein I, Brandstetter T, Kommoss F, Bettendorf H, Hagedorn M, Bauknecht T. Localization of cytokeratin 10 mRNA in human epidermis using nonradioactive in situ hybridization as a routine method. Arch Dermatol Res 1998; 290:286-8. [PMID: 9681682 DOI: 10.1007/s004030050306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- I Meinhold-Heerlein
- Department of Gynecology and Obstetrics, School of Medicine, University of Freiburg, Germany.
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Wetzka B, Schäfer W, Kommoss F, Bettendorf H, Nüsing R, Breckwoldt M, Zahradnik HP. Immunohistochemical localization of thromboxane synthase in human intrauterine tissues. Placenta 1994; 15:389-98. [PMID: 7937595 DOI: 10.1016/0143-4004(94)90006-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Uterine tissues are known to be able to synthesize thromboxane A2 (TXA2), but there is little information about the nature of cells actually responsible for its production. In this study human placenta, fetal membranes, umbilical cord and pregnant myometrium were investigated immunohistochemically. The avidin-biotin method for a monoclonal antibody against human thromboxane synthase (Tü 300) was applied on frozen tissue sections. In placenta, fetal membranes and umbilical cord, staining was positive for Hofbauer cells and fibroblasts. Further, in sections of placenta, capillary endothelium showed antigenicity for TX synthase. Leiomyocytes in the umbilical cord vessels contained the enzyme as well. Preparations of pregnant myometrium were shown to express TX synthase in leiomyocytes, endothelial cells and connective tissue cells. Amnion, trophoblast and decidua did not possess antigenicity for this enzyme. Since TXA2 plays an important role for the regulation of vascular tone and aggregation of platelets and may stimulate myometrial contractions during parturition, the abundance of TX synthase in pregnancy-specific tissues confirms previous in vivo and in vitro observations. Further, TXA2 synthesized by Hofbauer cells may be involved in immunological reactions during pregnancy, and the number and level of activation of Hofbauer cells may be closely related to the initiation of labour. Thromboxane production by the endothelium lining the fetal vessels points to its regulatory role for the blood flow in the fetoplacental unit.
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Affiliation(s)
- B Wetzka
- Universitätsfrauenklinik II, Endokrinologie und Reproduktions-medizin, Freiburg, Germany
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