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Beschta S, Eubler K, Bohne N, Forne I, Berg D, Berg U, Mayerhofer A. A rapid and robust method for the cryopreservation of human granulosa cells. Histochem Cell Biol 2021; 156:509-517. [PMID: 34313845 PMCID: PMC8604824 DOI: 10.1007/s00418-021-02019-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2021] [Indexed: 12/18/2022]
Abstract
Human primary granulosa cells (GCs) derived from women undergoing oocyte retrieval can be cultured and used as a cellular model for the study of human ovarian function. In vitro, they change rapidly, initially resembling cells of the preovulatory follicle and then cells of the corpus luteum. They are derived from individual patients, whose different medical history, lifestyle and age lead to heterogeneity. Thus, cells can rarely be ideally matched for cellular experiments or, if available, only in small quantities. We reasoned that cryopreservation of human GCs may be helpful to improve this situation. Previous studies indicated the feasibility of such an approach, but low survival of human GCs was reported, and effects on human GC functionality were only partially evaluated. We tested a slow freezing protocol (employing FCS and DMSO) for human GCs upon isolation from follicular fluid. We compared cryopreserved and subsequently thawed cells with fresh, non-cryopreserved cells from the same patients. About 80% of human GCs survived freezing/thawing. No differences were found in cell morphology, survival rate in culture, or transcript levels of mitochondrial (COX4, OPA1, TOMM20), steroidogenic (CYP11A1, CYP19A1) or cell-cell contact genes (GJA1) between the two groups in cells cultured for 1-5 days. A proteomic analysis revealed no statistically significant change in the abundance of a total of 5962 proteins. The two groups produced comparable basal levels of progesterone and responded similarly to hCG with elevation of progesterone. Taken together, our results show this to be a rapid and readily available method for the cryopreservation of human GCs. We anticipate that it will allow future large-scale experiments and may thereby improve cellular studies with human ovarian cells.
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Affiliation(s)
- Sarah Beschta
- Cell Biology, Anatomy III, Faculty of Medicine, Biomedical Center Munich (BMC), Ludwig-Maximilian-University (LMU), 82152, Martinsried, Germany
- Fertility Centre A.R.T. Bogenhausen, 81675, Munich, Germany
| | - Katja Eubler
- Cell Biology, Anatomy III, Faculty of Medicine, Biomedical Center Munich (BMC), Ludwig-Maximilian-University (LMU), 82152, Martinsried, Germany
| | - Nancy Bohne
- Fertility Centre A.R.T. Bogenhausen, 81675, Munich, Germany
| | - Ignasi Forne
- Protein Analysis Unit, Faculty of Medicine, Biomedical Center Munich (BMC), Ludwig-Maximilian-University (LMU), 82152, Martinsried, Germany
| | - Dieter Berg
- Fertility Centre A.R.T. Bogenhausen, 81675, Munich, Germany
| | - Ulrike Berg
- Fertility Centre A.R.T. Bogenhausen, 81675, Munich, Germany
| | - Artur Mayerhofer
- Cell Biology, Anatomy III, Faculty of Medicine, Biomedical Center Munich (BMC), Ludwig-Maximilian-University (LMU), 82152, Martinsried, Germany.
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A Role for H 2O 2 and TRPM2 in the Induction of Cell Death: Studies in KGN Cells. Antioxidants (Basel) 2019; 8:antiox8110518. [PMID: 31671815 PMCID: PMC6912327 DOI: 10.3390/antiox8110518] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022] Open
Abstract
Recent studies showed that KGN cells, derived from a human granulosa cell tumor (GCT), express NADPH oxidase 4 (NOX4), an important source of H2O2. Transient receptor potential melastatin 2 (TRPM2) channel is a Ca2+ permeable cation channel that can be activated by H2O2 and plays an important role in cellular functions. It is also able to promote susceptibility to cell death. We studied expression and functionality of TRPM2 in KGN cells and examined GCT tissue microarrays (TMAs) to explore in vivo relevance. We employed live cell, calcium and mitochondrial imaging, viability assays, fluorescence activated cell sorting (FACS) analysis, Western blotting and immunohistochemistry. We confirmed that KGN cells produce H2O2 and found that they express functional TRPM2. H2O2 increased intracellular Ca2+ levels and N-(p-Amylcinnamoyl)anthranilic acid (ACA), a TRPM2 inhibitor, blocked this action. H2O2 caused mitochondrial fragmentation and apoptotic cell death, which could be attenuated by a scavenger (Trolox). Immunohistochemistry showed parallel expression of NOX4 and TRPM2 in all 73 tumor samples examined. The results suggest that GCTs can be endowed with a system that may convey susceptibility to cell death. If so, induction of oxidative stress may be beneficial in GCT therapy. Our results also imply a therapeutic potential for TRPM2 as a drug target in GCTs.
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Buck T, Hack CT, Berg D, Berg U, Kunz L, Mayerhofer A. The NADPH oxidase 4 is a major source of hydrogen peroxide in human granulosa-lutein and granulosa tumor cells. Sci Rep 2019; 9:3585. [PMID: 30837663 PMCID: PMC6400953 DOI: 10.1038/s41598-019-40329-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/31/2019] [Indexed: 11/09/2022] Open
Abstract
H2O2 is a reactive oxygen species (ROS), which can diffuse away from its site of generation and may act as a cell-to-cell signaling factor. The mechanisms responsible for the generation of H2O2 in human ovarian follicles and possible signaling role(s) of H2O2 are not well known. We identified a source of H2O2, the enzyme NADPH oxidase (NOX) 4, in isolated differentiated, in-vitro fertilisation-derived human granulosa-lutein cells (GCs), in proliferating human granulosa tumour cells (KGN), as well as in situ in cells of growing ovarian follicles. H2O2 was readily detected in the supernatant of cultured GCs and KGN cells. H2O2 levels were significantly lowered by the NOX4 blocker GKT137831, indicating a pronounced contribution of NOX4 to overall H2O2 generation by these cells. We provide evidence that extracellular H2O2 is taken up by GCs, which is facilitated by aquaporins (peroxiporins). We thus conclude that GC-derived H2O2 might act as autocrine/paracrine factor. Addition of H2O2 increased MAPK-phosphorylation in GCs. Moreover, reducing H2O2 production with GKT137831 slowed proliferation of KGN cells. Our results pinpoint NOX4 and H2O2 as physiological players in the regulation of GC functions.
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Affiliation(s)
- Theresa Buck
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Ludwig-Maximilians-Universität München, 82152, Planegg, Martinsried, Germany
| | - Carsten Theo Hack
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Ludwig-Maximilians-Universität München, 82152, Planegg, Martinsried, Germany
| | | | | | - Lars Kunz
- Division of Neurobiology, Department Biology II, Ludwig-Maximilians-Universität München, 82152, Planegg, Martinsried, Germany
| | - Artur Mayerhofer
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Ludwig-Maximilians-Universität München, 82152, Planegg, Martinsried, Germany.
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Bagnjuk K, Mayerhofer A. Human Luteinized Granulosa Cells-A Cellular Model for the Human Corpus Luteum. Front Endocrinol (Lausanne) 2019; 10:452. [PMID: 31338068 PMCID: PMC6629826 DOI: 10.3389/fendo.2019.00452] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/21/2019] [Indexed: 12/12/2022] Open
Abstract
In the ovary, the corpus luteum (CL) forms a temporal structure. Luteinized mural granulosa cells (GCs), which stem from the ruptured follicle, are the main cells of the CL. They can be isolated from follicular fluid of woman undergoing in vitro fertilization. In culture, human GCs are viable for several days and produce progesterone, yet eventually steroid production stops and GCs with increasing time in culture undergo changes reminiscent of the ones observed during the demise of the CL in vivo. This short review summarizes the general use of human GCs as a model for the primate CL and some of the data from our lab, which indicate that viability, functionality, survival and death of GCs can be regulated by local signal molecules (e.g., oxytocin and PEDF) and the extracellular matrix (e.g., via the proteoglycan decorin). We further summarize studies, which identified autophagocytotic events in human GCs linked to the activation of an ion channel. More recent studies identified a form of regulated cell death, namely necroptosis. This form of cell death may, in addition to apoptosis, contribute to the demise of the human CL. We believe that human GCs are a unique window into the human CL. Studies employing these cells may lead to the identification of molecular events and novel targets, which may allow to interfere with CL functions.
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Gratz MJ, Stavrou S, Kuhn C, Hofmann S, Hermelink K, Heidegger H, Hutter S, Mayr D, Mahner S, Jeschke U, Vattai A. Dopamine synthesis and dopamine receptor expression are disturbed in recurrent miscarriages. Endocr Connect 2018; 7:727-738. [PMID: 29686031 PMCID: PMC5958746 DOI: 10.1530/ec-18-0126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 04/23/2018] [Indexed: 01/02/2023]
Abstract
OBJECTIVES l-dopa decarboxylase (DDC) is responsible for the synthesis of dopamine. Dopamine, which binds to the D2-dopamine receptor (D2R), plays an important role in the maintenance of pregnancy. Aim of our study was the analysis of DDC and D2R expression in placentas of spontaneous miscarriages (SMs) and recurrent miscarriages (RMs) in comparison to healthy controls. METHODS Patients with SM (n = 15) and RM (n = 15) were compared with patients from healthy pregnancies (n = 15) (pregnancy weeks 7-13 each). Placental tissue has been collected from SMs and RMs from the first trimester (Department of Gynaecology and Obstetrics, LMU Munich) and from abruptions (private practice, Munich). Placental cell lines, BeWo- and JEG-3 cells, were stimulated with the trace amines T0AM and T1AM in vitro. RESULTS Levels of DDC and D2R in trophoblasts and the decidua were lower in RMs in comparison to healthy controls. Stimulation of BeWo cells with T1AM significantly reduced DDC mRNA and protein levels. Via double-immunofluorescence, a DDC-positive cell type beneath decidual stromal cells and foetal EVT in the decidua could be detected. CONCLUSIONS Downregulation of DDC and D2R in trophoblasts of RMs reflects a reduced signal cascade of catecholamines on the foetal side.
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Affiliation(s)
- Michael J Gratz
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Stavroula Stavrou
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Christina Kuhn
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Simone Hofmann
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Kerstin Hermelink
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Helene Heidegger
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Stefan Hutter
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Doris Mayr
- Department of PathologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Udo Jeschke
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
| | - Aurelia Vattai
- Department of Obstetrics and GynecologyUniversity Hospital, LMU Munich, Munich, Germany
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l-Dopa and Fluoxetine Upregulate Astroglial 5-HT2B Receptors and Ameliorate Depression in Parkinson’s Disease Mice. ACTA ACUST UNITED AC 2018. [DOI: 10.3390/neuroglia1010006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Here, we report the association between depressive behavior (anhedonia) and astroglial expression of 5-hydroxytryptamine receptor 2B (5-HT2B) in an animal model of Parkinson’s disease, induced by bilateral injection of 6-hydroxydopamine (6-OHDA) into the striatum. Expression of the 5-HT2B receptor at the mRNA and protein level was decreased in the brain tissue of 6-OHDA-treated animals with anhedonia. Expression of the 5-HT2B receptor was corrected by four weeks treatment with either l-3,4-dihydroxyphenylalanine (l-dopa) or fluoxetine. Simultaneously, treatment with l-dopa abolished 6-OHDA effects on both depressive behavior and motor activity. In contrast, fluoxetine corrected 6-OHDA-induced depression but did not affect 6-OHDA-induced motor deficiency. In addition, 6-OHDA downregulated gene expression of the 5-HT2B receptor in astrocytes in purified cell culture and this downregulation was corrected by both l-dopa and fluoxetine. Our findings suggest that 6-OHDA-induced depressive behavior may be related to the downregulation of gene expression of the 5-HT2B receptor but 6-OHDA-induced motor deficiency reflects, arguably, dopamine depletion. Previously, we demonstrated that fluoxetine regulates gene expression in astrocytes by 5-HT2B receptor-mediated transactivation of epidermal growth factor receptor (EGFR). However, the underlying mechanism of l-dopa action remains unclear. The present work indicates that the decrease of gene expression of the astroglial 5-HT2B receptor may contribute to development of depressive behavior in Parkinson’s disease.
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Song Y, Liu J, Qiu Z, Chen D, Luo C, Liu X, Hua R, Zhu X, Lin Y, Li L, Liu W, Quan S. Advanced oxidation protein products from the follicular microenvironment and their role in infertile women with endometriosis. Exp Ther Med 2017; 15:479-486. [PMID: 29387200 DOI: 10.3892/etm.2017.5390] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/07/2017] [Indexed: 11/05/2022] Open
Abstract
Endometriosis (EM) is associated with oxidative stress. Advanced oxidation protein products (AOPPs) are novel markers of oxidative stress, which serve an important role as an inflammatory mediator in various chronic diseases. In order to examine the role of AOPPs in infertile women with EM, the present study analyzed the levels of AOPPs, estradiol (E2) and progesterone (P4) in the follicular fluid (FF) of 89 women with or without EM undergoing in vitro fertilization (IVF). The AOPP concentration in the FF of the EM group was significantly higher when compared with that of the control group (51.5±22.4 vs. 41.8±18.3 µmol/l; P<0.05). However, the FF P4 levels and blastocyst rate were significantly lower in the EM group compared with the control group (P4:1,249.6±465.4 vs. 1,752.7±565.4 ng/ml, P<0.05; blastocyst rate: 0.511±0.322 vs. 0.662±0.278; P<0.05). The AOPP concentration and P4 level in the FF presented a significant negative correlation in the EM and control groups, as well as in the total cohort of patients (EM group: r=-0.406, P=0.006; control group: r=-0.315, P=0.035; total: r=-0.421, P<0.001). In addition, there was a significant negative correlation between the FF AOPP concentrations and blastocyst rate in the EM group and in the total cohort (EM group: r=-0.376, P=0.012; total: r=-0.367, P<0.001). In conclusion, these results suggested that AOPPs may be a potentially effective marker for predicting the oocyte quality and outcomes of IVF in infertile women with EM.
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Affiliation(s)
- Yali Song
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jing Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhuolin Qiu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Donghong Chen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Chen Luo
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Xiaoning Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Hengsheng Hospital, Southern Medical University, Shenzhen, Guangdong 510888, P.R. China
| | - Rui Hua
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Xi Zhu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yanling Lin
- Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Lina Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Wenlian Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Song Quan
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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