1
|
Ahmadpour S, Moshkdanian G, Rezvani Z, Almasi M. L-carnitine fails to rescue chemotherapy injured ovaries by epigenetic changes of transcription factors. Gene 2024; 901:148128. [PMID: 38181927 DOI: 10.1016/j.gene.2024.148128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 11/14/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
Cyclophosphamide (CP), as an anti-cancer drug, is frequently used to treat various types of cancer. A decreased number of ovarian follicles impaired normal ovarian function, and subsequent premature ovarian failure (POF) presented as a side effect of cyclophosphamide usage. These events may eventually affect the fertility rate of individuals. The present study showed the effect of cyclophosphamide on ovarian reserves and the protective effect of L-carnitine (LC) as an antioxidant to prevent POF. To design the study, six to eight-week-old NMRI female mice were divided into three groups: control, cyclophosphamide (CP), and cyclophosphamide + L-carnitine (CP + LC). Mice received drugs intraperitoneally (IP) for 21 days. In the following 24 h after the last injection, both ovaries were used to evaluate the expression of Sohlh1 and Lhx8 genes by Real-time PCR. Furthermore, the alteration of Lhx8 promoter methylation was examined by Methylation-sensitive high-resolution melting analysis (MS-HRM). The present data showed the negative effect of CP on regulator genes of oogenesis including Sohlh1 and Lhx8. In addition, an examination of the epigenetic status of the Lhx8 gene showed a change in promoter methylation of this gene following cyclophosphamide injection. Although, L-carnitine is an effective antioxidant in relieving oxidative stress caused by cyclophosphamide and its damage, in the present study, however, the use of L-carnitine failed to protect the ovaries from changes caused by CP injection. So, using cyclophosphamide can alter the expression of folliculogenesis genes through its effects on epigenetic changes and may cause POF. The results of the present study showed that L-carnitine consumption can't protect the ovaries against the adverse effects of CP.
Collapse
Affiliation(s)
- Sara Ahmadpour
- Biotechnology Department, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Ghazaleh Moshkdanian
- Gametogenesis Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Science, Kashan, Iran.
| | - Zahra Rezvani
- Department of Cell and Molecular Biology, Faculty of Chemistry, University of Kashan, Iran
| | - Majid Almasi
- Gametogenesis Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Science, Kashan, Iran
| |
Collapse
|
2
|
Liu K, Wu Y, Yang W, Li T, Wang Z, Xiao S, Peng Z, Li M, Xiong W, Li M, Chen X, Zhang S, Lei X. α-Ketoglutarate Improves Ovarian Reserve Function in Primary Ovarian Insufficiency by Inhibiting NLRP3-Mediated Pyroptosis of Granulosa Cells. Mol Nutr Food Res 2024; 68:e2300784. [PMID: 38314939 DOI: 10.1002/mnfr.202300784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/14/2023] [Indexed: 02/07/2024]
Abstract
SCOPE Premature ovarian insufficiency (POI) is a common female infertility problem, with its pathogenesis remains unknown. The NOD-like receptor family pyrin domain-containing 3 (NLRP3)-mediated pyroptosis has been proposed as a possible mechanism in POI. This study investigates the therapeutic effect of α-ketoglutarate (AKG) on ovarian reserve function in POI rats and further explores the potential molecular mechanisms. METHODS AND RESULTS POI rats are caused by administration of cyclophosphamide (CTX) to determine whether AKG has a protective effect. AKG treatment increases the ovarian index, maintains both serum hormone levels and follicle number, and improves the ovarian reserve function in POI rats, as evidence by increased the level of lactate and the expression of rate-limiting enzymes of glycolysis in the ovaries, additionally reduced the expression of NLRP3, Gasdermin D (GSDMD), Caspase-1, Interleukin-18 (IL-18), and Interleukin-1 beta (IL-1β). In vitro, KGN cells are treated with LPS and nigericin to mimic pyroptosis, then treated with AKG and MCC950. AKG inhibits inflammatory and pyroptosis factors such as NLRP3, restores the glycolysis process in vitro, meanwhile inhibition of NLRP3 has the same effect. CONCLUSION AKG ameliorates CTX-induced POI by inhibiting NLRP3-mediated pyroptosis, which provides a new therapeutic strategy and drug target for clinical POI patients.
Collapse
Affiliation(s)
- Ke Liu
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Yafei Wu
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Wenqin Yang
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Tianlong Li
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Zhongxu Wang
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Shu Xiao
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Zhenghua Peng
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Meng Li
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Wenhao Xiong
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, International Joint Laboratory for Arteriosclerotic Disease Research of Hunan Province, University of South China, Hengyang, Hunan, 421001, China
| | - Meixiang Li
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Xi Chen
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Shun Zhang
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, 541001, China
| | - Xiaocan Lei
- Institute of Clinical Anatomy & Reproductive Medicine, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| |
Collapse
|
3
|
İlgen O, Yılmaz F, Kurt S. Protective and/or therapeutic effects of berberine in a model of premature ovarian failure induced by cyclophosphamide in rats. Turk J Obstet Gynecol 2023; 20:227-233. [PMID: 37668045 PMCID: PMC10478726 DOI: 10.4274/tjod.galenos.2023.70033] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/06/2023] [Indexed: 09/06/2023] Open
Abstract
Objective We conducted a biochemical and histological evaluation of whether berberine has a protective and/or therapeutic effect in a cyclophosphamide-induced premature ovarian failure (POF) model. Materials and Methods We divided 28 Wistar albino female rats into 4 groups [control group, POF group, cyclophosphamide (CP)+berberine (Bb) group, and POF+Bb group]. The POF model was established by intraperitoneal administration of 50 mg/kg CP on day 1 followed by 8 mg/kg/day CP dissolved in saline for the following 14 days. The CP+Bb group received Bb concurrently for two weeks with CP. The POF+Bb group received berberine for two weeks following the completion of CP administration. Left ovaries were used for histopathological evaluation and right ovaries were used for biochemical analysis [tumor necrosis factor-alpha (TNF-α), interleukin (IL)-1, IL-6 levels in tissue]. Results Ovarian damage scoring was significantly higher in the POF group than in the other groups (p<0.005). In the POF group, primordial and primary follicle counts were the lowest, while secondary and corpus luteum counts were the highest (p<0.005). There was no significant difference between the other groups. The POF group had significantly elevated levels of TNF-α, IL-1, and IL-6 in the biochemistry results (p<0.005). Conclusion We demonstrated that berberine could be effective in the protection and treatment of POF by reducing proinflammatory cytokines. We believe that our study can make a considerable contribution to the literature in terms of POF protection and/or treatment.
Collapse
Affiliation(s)
- Orkun İlgen
- Erzurum Training and Research Hospital, Clinic of Obstetrics and Gynecology, Erzurum, Turkey
| | - Filiz Yılmaz
- Hitit University Erol Olçok Training and Research Hospital, IVF, Çorum, Turkey
| | - Sefa Kurt
- Dokuz Eylül University Faculty of Medicine, Department of Obstetrics and Gynecology, İzmir, Turkey
| |
Collapse
|
4
|
Buckenmeyer MJ, Sukhwani M, Iftikhar A, Nolfi AL, Xian Z, Dadi S, Case ZW, Steimer SR, D’Amore A, Orwig KE, Brown BN. A bioengineered in situ ovary (ISO) supports follicle engraftment and live-births post-chemotherapy. J Tissue Eng 2023; 14:20417314231197282. [PMID: 38029018 PMCID: PMC10656812 DOI: 10.1177/20417314231197282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/10/2023] [Indexed: 12/01/2023] Open
Abstract
Female cancer patients who have undergone chemotherapy have an elevated risk of developing ovarian dysfunction and failure. Experimental approaches to treat iatrogenic infertility are evolving rapidly; however, challenges and risks remain that hinder clinical translation. Biomaterials have improved in vitro follicle maturation and in vivo transplantation in mice, but there has only been marginal success for early-stage human follicles. Here, we developed methods to obtain an ovarian-specific extracellular matrix hydrogel to facilitate follicle delivery and establish an in situ ovary (ISO), which offers a permissive environment to enhance follicle survival. We demonstrate sustainable follicle engraftment, natural pregnancy, and the birth of healthy pups after intraovarian microinjection of isolated exogenous follicles into chemotherapy-treated (CTx) mice. Our results confirm that hydrogel-based follicle microinjection could offer a minimally invasive delivery platform to enhance follicle integration for patients post-chemotherapy.
Collapse
Affiliation(s)
- Michael J Buckenmeyer
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Meena Sukhwani
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Aimon Iftikhar
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Alexis L Nolfi
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ziyu Xian
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Srujan Dadi
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zachary W Case
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sarah R Steimer
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Antonio D’Amore
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Fondazione RiMED, Palermo, Italy
| | - Kyle E Orwig
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Bryan N Brown
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| |
Collapse
|
5
|
Navakauskienė R, Žukauskaitė D, Borutinskaitė VV, Bukreieva T, Skliutė G, Valatkaitė E, Zentelytė A, Piešinienė L, Shablii V. Effects of human placenta cryopreservation on molecular characteristics of placental mesenchymal stromal cells. Front Bioeng Biotechnol 2023; 11:1140781. [PMID: 37122871 PMCID: PMC10133466 DOI: 10.3389/fbioe.2023.1140781] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/29/2023] [Indexed: 05/02/2023] Open
Abstract
Cryopreservation of placenta tissue for long-term storage provides the opportunity in the future to isolate mesenchymal stromal cells that could be used for cell therapy and regenerative medicine. Despite being widely used, the established cryopreservation protocols for freezing and thawing still raise concerns about their impact on molecular characteristics, such as epigenetic regulation. In our study, we compared the characteristics of human placental mesenchymal stromal cells (hPMSCs) isolated from fresh (native) and cryopreserved (cryo) placenta tissue. We assessed and compared the characteristics of native and cryo hPMSCs such as morphology, metabolic and differentiation potential, expression of cell surface markers, and transcriptome. No significant changes in immunophenotype and differentiation capacity between native and cryo cells were observed. Furthermore, we investigated the epigenetic changes and demonstrated that both native and cryo hPMSCs express only slight variations in the epigenetic profile, including miRNA levels, DNA methylation, and histone modifications. Nevertheless, transcriptome analysis defined the upregulation of early-senescence state-associated genes in hPMSCs after cryopreservation. We also evaluated the ability of hPMSCs to improve pregnancy outcomes in mouse models. Improved pregnancy outcomes in a mouse model confirmed that isolated placental cells both from native and cryo tissue have a positive effect on the restoration of the reproductive system. Still, the native hPMSCs possess better capacity (up to 66%) in comparison with cryo hPMSCs (up to 33%) to restore fertility in mice with premature ovarian failure. Our study demonstrates that placental tissue can be cryopreserved for long-term storage with the possibility to isolate mesenchymal stromal cells that retain characteristics suitable for therapeutic use.
Collapse
Affiliation(s)
- Rūta Navakauskienė
- Department of Molecular Cell Biology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
- *Correspondence: Rūta Navakauskienė, ; Volodymyr Shablii,
| | - Deimantė Žukauskaitė
- Department of Molecular Cell Biology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | | | - Tetiana Bukreieva
- Laboratory of Biosynthesis of Nucleic Acids, Department of Functional Genomics, Institute of Molecular Biology and Genetics, National Academy of Science, Kyiv, Ukraine
- Placenta Stem Cell Laboratory, Cryobank, Institute of Cell Therapy, Kyiv, Ukraine
| | - Giedrė Skliutė
- Department of Molecular Cell Biology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
- Nanodiagnostika, Ltd., Vilnius, Lithuania
| | - Elvina Valatkaitė
- Department of Molecular Cell Biology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Aistė Zentelytė
- Department of Molecular Cell Biology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | | | - Volodymyr Shablii
- Laboratory of Biosynthesis of Nucleic Acids, Department of Functional Genomics, Institute of Molecular Biology and Genetics, National Academy of Science, Kyiv, Ukraine
- Placenta Stem Cell Laboratory, Cryobank, Institute of Cell Therapy, Kyiv, Ukraine
- *Correspondence: Rūta Navakauskienė, ; Volodymyr Shablii,
| |
Collapse
|
6
|
Sahota JS, Sharma B, Guleria K, Sambyal V. Candidate genes for infertility: an in-silico study based on cytogenetic analysis. BMC Med Genomics 2022; 15:170. [PMID: 35918717 PMCID: PMC9347124 DOI: 10.1186/s12920-022-01320-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/22/2022] [Indexed: 11/26/2022] Open
Abstract
Background The cause of infertility remains unclear in a significant proportion of reproductive-age couples who fail to conceive naturally. Chromosomal aberrations have been identified as one of the main genetic causes of male and female infertility. Structural chromosomal aberrations may disrupt the functioning of various genes, some of which may be important for fertility. The present study aims to identify candidate genes and putative functional interaction networks involved in male and female infertility using cytogenetic data from cultured peripheral blood lymphocytes of infertile patients. Methods Karyotypic analyses was done in 201 infertile patients (100 males and 101 females) and 201 age and gender matched healthy controls (100 males and 101 females) after 72 h peripheral lymphocyte culturing and GTG banding, followed by bioinformatic analysis using Cytoscape v3.8.2 and Metascape. Results Several chromosomal regions with a significantly higher frequency of structural aberrations were identified in the infertile males (5q2, 10q2, and 17q2) and females (6q2, 16q2, and Xq2). Segregation of the patients based on type of infertility (primary v/s secondary infertility) led to the identification of chromosomal regions with a significantly higher frequency of structural aberrations exclusively within the infertile males (5q2, 17q2) and females (16q2) with primary infertility. Cytoscape identified two networks specific to these regions: a male specific network with 99 genes and a female specific network with 109 genes. The top enriched GO terms within the male and female infertility networks were “skeletal system morphogenesis” and “mRNA transport” respectively. PSME3, PSMD3, and CDC27 were the top 3 hub genes identified within the male infertility network. Similarly, UPF3B, IRF8, and PSMB1 were the top 3 hub genes identified with the female infertility network. Among the hub genes identified in the male- and female-specific networks, PSMB1, PSMD3, and PSME3 are functional components of the proteasome complex. These hub genes have a limited number of reports related to their respective roles in maintenance of fertility in mice model and humans and require validation in further studies. Conclusion The candidate genes predicted in the present study can serve as targets for future research on infertility. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-022-01320-x.
Collapse
Affiliation(s)
- Jatinder Singh Sahota
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Bhavna Sharma
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Kamlesh Guleria
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Vasudha Sambyal
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India.
| |
Collapse
|
7
|
The process of ovarian aging: it is not just about oocytes and granulosa cells. J Assist Reprod Genet 2022; 39:783-792. [PMID: 35352316 PMCID: PMC9051003 DOI: 10.1007/s10815-022-02478-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ovarian age is classically considered the main cause of female reproductive infertility. In women, the process proceeds as an ongoing decline in the primordial follicle stockpile and it is associated with reduced fertility in the mid-thirties, irregular menstruation from the mid-forties, cessation of fertility, and, eventually, menopause in the early fifties. Reproductive aging is historically associated with changes in oocyte quantity and quality. However, besides the oocyte, other cellular as well as environmental factors have been the focus of more recent investigations suggesting that ovarian decay is a complex and multifaceted process. Among these factors, we will consider mitochondria and oxidative stress as related to nutrition, changes in extracellular matrix molecules, and the associated ovarian stromal compartment where immune cells of both the native and adaptive systems seem to play an important role. Understanding such processes is crucial to design treatment strategies to slow down ovarian aging and consequently prolong reproductive lifespan and, more to this, alleviaingt side effects of menopause on the musculoskeletal, cardiovascular, and nervous systems.
Collapse
|
8
|
Tang D, Feng X, Ling L, Zhang W, Luo Y, Wang Y, Xiong Z. Experimental study for the establishment of a chemotherapy-induced ovarian insufficiency model in rats by using cyclophosphamide combined with busulfan. Regul Toxicol Pharmacol 2021; 122:104915. [PMID: 33705838 DOI: 10.1016/j.yrtph.2021.104915] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 11/19/2022]
Abstract
With an improvement in the survival rate of cancer patients, chemotherapy-induced premature ovarian insufficiency (POI) is increasingly affecting the quality of life of female patients. Currently, there are many relevant studies using mice as an animal model. However, a large coefficient of variation for weight in mice is not appropriate for endocrine-related studies, compared with rats; therefore, it is necessary to identify an appropriate experimental model in rats. In this study, cyclophosphamide combined with busulfan was used to establish an animal model. We compared several common modeling methods using chemotherapeutic drugs, cisplatin, cyclophosphamide, and 4-vinylcyclohexene diepoxide (VCD), and we found that the combination of cyclophosphamide and busulfan was more effective in establishing a POI model in rats with few side effects by analyzing general physical conditions, pathological tissue sections of heart, liver, lung, spleen, kidney, uterus, and ovary, serum hormone levels, and follicle counts; thus, providing a more reliable model basis for subsequent studies.
Collapse
Affiliation(s)
- Dongyuan Tang
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Xiushan Feng
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Li Ling
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Wenqian Zhang
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Yanjing Luo
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Yaping Wang
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China
| | - Zhengai Xiong
- Department of Gynecology and Obstetics, The Second Affiliated Hospital, Chongqing MedicalUniversity, Chongqing, 400010, People's Republic of China.
| |
Collapse
|
9
|
Cui L, Bao H, Liu Z, Man X, Liu H, Hou Y, Luo Q, Wang S, Fu Q, Zhang H. hUMSCs regulate the differentiation of ovarian stromal cells via TGF-β 1/Smad3 signaling pathway to inhibit ovarian fibrosis to repair ovarian function in POI rats. Stem Cell Res Ther 2020; 11:386. [PMID: 32894203 PMCID: PMC7487655 DOI: 10.1186/s13287-020-01904-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/17/2020] [Accepted: 08/26/2020] [Indexed: 01/01/2023] Open
Abstract
Objective The basic pathological changes of primary ovarian insufficiency (POI) include ovarian tissue fibrosis and follicular development disorders. The human umbilical cord mesenchymal stem cell (hUMSC) transplantation has been shown an effective method to improve the ovarian function in POI rat model; however, the exact mechanisms are still unclear. The purpose of this study is to investigate whether the recovery of ovarian function in POI rats is related to the inhibition of tissue fibrosis following hUMSC transplantation. Furthermore, the transforming growth factor-β1 (TGF-β1) signaling pathway is explored to determine the mechanisms of ovarian function recovery through its inhibition of tissue fibrosis. Methods The primary ovarian insufficiency (POI) rat model was established by intraperitoneal injection of chemotherapy drug cisplatin (CDDP) for 7 days. The levels of serum sex hormones were measured using enzyme-linked immunosorbent assay (ELISA). The tissue fibrosis in the ovary was examined using Masson staining and Sirius red staining. The collagen fibers in the ovarian tissues were detected by Western blot analysis. To investigate the mechanisms of ovarian function recovery following hUMSC transplantation, ovarian stromal cells were isolated from the ovarian cortex of immature rats. The expression of Cytochrome P450 17A1 (Cyp17a1) and fibrosis marker of alpha smooth muscle actin (α-SMA) in ovarian stromal cells was examined using immunofluorescence analysis. Also, the protein levels of Cyp17a1 and α-SMA in ovarian stromal cells were examined by Western blot analysis. The expression of TGF-β1 and Smad3 signals was measured by Western blot and quantitative reverse-transcription polymerase chain reaction (qRT-PCR) analysis. Results The results show that the function of the ovary in POI rats was significantly improved after hUMSC transplantation. The expression of fibrosis markers (α-SMA) and production of Collagen Type I (Collagen I) and Collagen Type III (Collagen III) in POI rats were significantly inhibited in POI rats following hUMSC transplantation. In the cultured ovarian stromal cells, the decrease of TGF-β1 and p-Smad3 protein expression was observed in hUMSC-treated POI rats. The treatment with TGF-β1 inhibitor of SB431542 further confirmed this signal pathway was involved in the process. Conclusion Our study demonstrated that the TGF-β1/Smad3 signaling pathway was involved in the inhibition of ovarian tissue fibrosis, which contributed to the restoration of ovarian function in POI rats following hUMSC transplantation.
Collapse
Affiliation(s)
- Linlu Cui
- College of Basic Medicine & Institute of Reproductive Diseases, Binzhou Medical University, Yantai, 264003, Shandong, China.,College of Basic Medicine, Binzhou Medical University, Yantai, 264003, Shandong, China
| | - Hongchu Bao
- Department of Clinical Medicine, Yantai Yuhuangding Hospital, Yantai, 264000, Shandong, China
| | - Zhongfeng Liu
- Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264100, Shandong, China
| | - Xuejing Man
- Department of Clinical Medicine, Yantai Yuhuangding Hospital, Yantai, 264000, Shandong, China
| | - Hongyuan Liu
- Clinical Medical School, Binzhou Medical University, Yantai, Shandong, China
| | - Yun Hou
- College of Basic Medicine, Binzhou Medical University, Yantai, 264003, Shandong, China
| | - Qianqian Luo
- College of Basic Medicine, Binzhou Medical University, Yantai, 264003, Shandong, China
| | - Siyuan Wang
- Clinical Medical School, Binzhou Medical University, Yantai, Shandong, China
| | - Qiang Fu
- School of pharmacy, Binzhou Medical University, Yantai, Shandong, China.
| | - Hongqin Zhang
- College of Basic Medicine & Institute of Reproductive Diseases, Binzhou Medical University, Yantai, 264003, Shandong, China. .,College of Basic Medicine, Binzhou Medical University, Yantai, 264003, Shandong, China.
| |
Collapse
|
10
|
Dietary calcium deficiency suppresses follicle selection in laying ducks through mechanism involving cyclic adenosine monophosphate-mediated signaling pathway. Animal 2020; 14:2100-2108. [PMID: 32367795 DOI: 10.1017/s1751731120000907] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ovarian follicle selection is a natural biological process in the pre-ovulatory hierarchy in birds that drives growing follicles to be selected within the ovulatory cycle. Follicle selection in birds is strictly regulated, involving signaling pathways mediated by dietary nutrients, gonadotrophic hormones and paracrine factors. This study aimed to test the hypothesis that dietary Ca may participate in regulating follicle selection in laying ducks through activating the signaling pathway of cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA)/extracellular signal-regulated kinase (ERK), possibly mediated by gonadotrophic hormones. Female ducks at 22 weeks of age were initially fed one of two Ca-deficient diets (containing 1.8% or 0.38% Ca) or a Ca-adequate control diet (containing 3.6% Ca) for 67 days (depletion period), then all birds were fed the Ca-adequate diet for an additional 67 days (repletion period). Compared with the Ca-adequate control, ducks fed 0.38% Ca during the depletion period had significantly decreased (P < 0.05) numbers of hierarchical follicles and total ovarian weight, which were accompanied by reduced egg production. Plasma concentration of FSH was decreased by the diet containing 1.8% Ca but not by that containing 0.38%. The ovarian content of cAMP was increased with the two Ca-deficient diets, and phosphorylation of PKA and ERK1/2 was increased with 0.38% dietary Ca. Transcripts of ovarian estradiol receptor 2 and luteinizing hormone receptor (LHR) were reduced in the ducks fed the two Ca-deficient diets (P < 0.05), while those of the ovarian follicle stimulating hormone receptor (FSHR) were decreased in the ducks fed 0.38% Ca. The transcript abundance of ovary gap junction proteins, A1 and A4, was reduced with the Ca-deficient diets (P < 0.05). The down-regulation of gene expression of gap junction proteins and hormone receptors, the increased cAMP content and the suppressed hierarchical follicle numbers were reversed by repletion of dietary Ca. These results indicate that dietary Ca deficiency negatively affects follicle selection of laying ducks, independent of FSH, but probably by activating cAMP/PKA/ERK1/2 signaling pathway.
Collapse
|
11
|
Jiang Y, Zhang Z, Cha L, Li L, Zhu D, Fang Z, He Z, Huang J, Pan Z. Resveratrol Plays a Protective Role against Premature Ovarian Failure and Prompts Female Germline Stem Cell Survival. Int J Mol Sci 2019; 20:ijms20143605. [PMID: 31340581 PMCID: PMC6678805 DOI: 10.3390/ijms20143605] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/09/2019] [Accepted: 07/17/2019] [Indexed: 12/12/2022] Open
Abstract
This study was designed to investigate the protective effect of resveratrol (RES) on premature ovarian failure (POF) and the proliferation of female germline stem cells (FGSCs) at the tissue and cell levels. POF mice were lavaged with RES, and POF ovaries were co-cultured with RES and/or GANT61 in vitro. FGSCs were pretreated with Busulfan and RES and/or GANT61 and co-cultured with M1 macrophages, which were pretreated with RES. The weights of mice and their ovaries, as well as their follicle number, were measured. Ovarian function, antioxidative stress, inflammation, and FGSCs survival were evaluated. RES significantly increased the weights of POF mice and their ovaries as well as the number of follicles, while it decreased the atresia rate of follicles. Higher levels of Mvh, Oct4, SOD2, GPx, and CAT were detected after treatment with RES in vivo and in vitro. RES treatment resulted in significantly lower TNF-α and IL-6 concentrations and an obviously higher IL-10 concentration in the ovaries. In FGSCs, higher Mvh, Oct4, and SOD2 concentrations and lower TNF-α, IL-6, and MDA concentrations were measured in the RES group. Blockage of the Hh signaling pathway reversed the protective effect of RES on FGSCs. In conclusion, RES effectively improved the ovarian function of the POF model and the productive capacity of FGSCs via relieving oxidative stress and inflammation and a mechanism involving the Hh signaling pathway, suggesting that RES is a potential agent against POF and can aid in the survival of FGSCs.
Collapse
Affiliation(s)
- Yu Jiang
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Zhaoyuan Zhang
- Fuzhou Medical College of Nanchang University, Nanchang 344000, Jiangxi Province, China
| | - Lijun Cha
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Lili Li
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Dantian Zhu
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Zhi Fang
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Zhiqiang He
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Jian Huang
- The Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Provincial, Nanchang University, Nanchang 330031, Jiangxi Province, China
| | - Zezheng Pan
- Medical College, Nanchang University, Nanchang 330006, Jiangxi Province, China.
- Faculty of Basic Medical Science, Nanchang University, Nanchang 330006, Jiangxi Province, China.
| |
Collapse
|
12
|
Ling L, Feng X, Wei T, Wang Y, Wang Y, Zhang W, He L, Wang Z, Zeng Q, Xiong Z. Effects of low-intensity pulsed ultrasound (LIPUS)-pretreated human amnion-derived mesenchymal stem cell (hAD-MSC) transplantation on primary ovarian insufficiency in rats. Stem Cell Res Ther 2017; 8:283. [PMID: 29258619 PMCID: PMC5735876 DOI: 10.1186/s13287-017-0739-3] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/26/2017] [Accepted: 11/29/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Human amnion-derived mesenchymal stem cells (hAD-MSCs) have the features of mesenchymal stem cells (MSCs). Low-intensity pulsed ultrasound (LIPUS) can promote the expression of various growth factors and anti-inflammatory molecules that are necessary to keep the follicle growing and to reduce granulosa cell (GC) apoptosis in the ovary. This study aims to explore the effects of LIPUS-pretreated hAD-MSC transplantation on chemotherapy-induced primary ovarian insufficiency (POI) in rats. METHODS The animals were divided into control, POI, hAD-MSC treatment, and LIPUS-pretreated hAD-MSC treatment groups. POI rat models were established by intraperitoneal injection of cyclophosphamide (CTX). The hAD-MSCs isolated from the amnion were exposed to LIPUS or sham irradiation for 5 consecutive days and injected into the tail vein of POI rats. Expression and secretion of growth factors promoted by LIPUS in hAD-MSCs were detected by real-time quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) in vitro. Estrous cycle, serum sex hormone levels, follicle counts, ovarian pathological changes, GC apoptosis, Bcl2 and Bax expression, and pro-inflammatory cytokine levels in ovaries were examined. RESULTS Primary hAD-MSCs were successfully isolated from the amnion. LIPUS promoted the expression and secretion of growth factors in hAD-MSCs in vitro. Both hAD-MSC and LIPUS-pretreated hAD-MSC transplantation increased the body and reproductive organ weights, improved ovarian function, and reduced reproductive organ injuries in POI rats. Transplantation of hAD-MSCs increased the Bcl-2/Bax ratio and reduced GC apoptosis and ovarian inflammation induced by chemotherapy in ovaries. These effects could be improved by pretreatment with LIPUS on hAD-MSCs. CONCLUSION Both hAD-MSC transplantation and LIPUS-pretreated hAD-MSC transplantation can repair ovarian injury and improve ovarian function in rats with chemotherapy-induced POI. LIPUS-pretreated hAD-MSC transplantation is more advantageous for reducing inflammation, improving the local microenvironment, and inhibiting GC apoptosis induced by chemotherapy in ovarian tissue of POI rats.
Collapse
Affiliation(s)
- Li Ling
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Xiushan Feng
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Tianqin Wei
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Yan Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400010 China
| | - Yaping Wang
- Department of Histology and Embryology, Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, 400010 China
| | - Wenqian Zhang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Lianli He
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital, Zunyi Medical College, Zunyi, 563000 Guizhou China
| | - Ziling Wang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Qianru Zeng
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Zhengai Xiong
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| |
Collapse
|
13
|
Guida M, Castaldi MA, Rosamilio R, Giudice V, Orio F, Selleri C. Reproductive issues in patients undergoing Hematopoietic Stem Cell Transplantation: an update. J Ovarian Res 2016; 9:72. [PMID: 27802832 PMCID: PMC5088651 DOI: 10.1186/s13048-016-0279-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 10/17/2016] [Indexed: 12/27/2022] Open
Abstract
In 1963 George Mathé announced to the world that he had cured a patient of leukaemia by means of a bone-marrow transplant. Since than much progress has been made and nowadays Hematopoietic Stem Cell Transplantation (HSCT) is considered the most effective treatment of numerous severe haematological diseases. Gynaecological complications in HSCT women represent a serious concern for these patients, but often underestimated by clinicians in the view of Overall Survival. The main gynaecological complications of HSCT are represented by: premature ovarian failure (POF), thrombocytopenia-associated menorrhagia, genital symptoms or sexual problems in course of chronic GVHD (cGVHD), osteoporosis, secondary solid tumours due to immunosuppressive drugs to treat cGVHD and severity of cGVHD, and fertility and pregnancy issues. In particular fertility-related issues are always more relevant for patients, whose life expectation is constantly growing up after HSCT. Thus, taking care of a patient undergoing HSCT should primarily include gynaecological evaluation, even before conditioning regimen or chemotherapy for the underlying malignancy, as, in our opinion, it is of great importance to ensure a complete diagnostic work-up and intervention options to guarantee maximum reproductive health and a better quality of life in HSCT women. The present review aims at describing principal features of the aforementioned gynaecological complications of HSCT, and to define, on the basis of current international literature, a specific protocol for the prevention, diagnosis, management and follow-up of gynaecological complications of both autologous and heterologous transplantation, before and after the procedure.
Collapse
Affiliation(s)
- Maurizio Guida
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Maria Antonietta Castaldi
- Ph. D. Program in Translational Medicine, Department of Experimental Medicine, Second University of Naples, Naples, Italy. .,Department of Maternal and Child Health, Operative Unit of Obstetrics and Gynaecology, A.O.R.N. S.G. Moscati, Contrada Amoretta, 83100, Avellino, Italy.
| | - Rosa Rosamilio
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Valentina Giudice
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Francesco Orio
- Department of Sports Science and Wellness, "Parthenope" University of Naples, 80133, Naples, Italy
| | - Carmine Selleri
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| |
Collapse
|
14
|
Batchvarov IS, Taylor RW, Bustamante-Marín X, Czerwinski M, Johnson ES, Kornbluth S, Capel B. A grafted ovarian fragment rescues host fertility after chemotherapy. Mol Hum Reprod 2016; 22:842-851. [PMID: 27698028 DOI: 10.1093/molehr/gaw064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 07/15/2016] [Accepted: 09/30/2016] [Indexed: 12/21/2022] Open
Abstract
STUDY QUESTION Can host fertility be rescued by grafting of a fragment of a healthy ovary soon after chemotherapy? SUMMARY ANSWER We found that grafting a green fluorescent protein (GFP)-positive fragment from a healthy isogenic ovary to the left ovary of a chemo-treated host rescued function and fertility of the grafted host ovary, and resulted in the production of host-derived offspring as late as the sixth litter after chemotherapy (CTx) treatment, whereas none of the ungrafted controls produced a second litter. WHAT IS KNOWN ALREADY In women and girls undergoing chemotherapy, infertility and premature ovarian failure are frequent outcomes. There are accumulating reports of improved endocrine function after autotransplantation of an ovarian fragment, raising the possibility that the transplant is beneficial to the endogenous ovary. STUDY DESIGN, SIZE, DURATION We first established a CTx treatment regimen that resulted in the permanent loss of fertility in 100% of female mice of the FVB inbred strain. We grafted an isogenic ovary fragment from a healthy female homozygous for a GFP transgene to the left ovary of 100 CTx-treated hosts, and compared fertility to 39 ungrafted controls in 6 months of continuous matings, using GFP to distinguish offspring derived from the graft, and those derived from the host. PARTICIPANTS/MATERIALS, SETTING, METHODS Immunofluoresece and western blot analysis of 39 treated ovaries during and 15 days after CTx treatment revealed elevated apoptosis, rapid loss of granulosa cells and an increased recruitment of growing follicles. Using immunofluorescence and confocal imaging, we tracked the outcome of the grafted tissue over 4 months and its effect on the adjacent and contralateral ovary of the host. MAIN RESULTS AND THE ROLE OF CHANCE Fifty-three percent of grafted females produced a second litter whereas none of the ungrafted females produced a second litter. The likelihood that this could occur by chance is very low (P < 0.0001). LIMITATIONS, REASONS FOR CAUTION These results are shown only in mice, and whether or how they might apply to chemotherapy patients subjected to different CTx regimens is not yet clear. WIDER IMPLICATIONS OF THE FINDINGS Our experiments prove that rescue of a chemo-treated ovary is possible, and establish a system to investigate the mechanism of rescue and to identify the factors responsible with the long-term goal of developing therapies for preservation of ovarian endocrine function and fertility in women undergoing chemotherapy. LARGE SCALE DATA No large datasets were produced. STUDY FUNDING/COMPETING INTERESTS Duke University Medical Center Chancellor's Discovery Grant to BC; ESJ was supported by an NRSA 5F31CA165545; SK was supported by NIH RO1 GM08033; RWT was supported by the Duke University School of Medicine Ovarian Cancer Research Fellowship; XBM was supported by CONICYT. The authors have no conflicts of interest to declare.
Collapse
Affiliation(s)
| | - Rachel Williamson Taylor
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA.,School of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - Ximena Bustamante-Marín
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA.,Facultad de Ciencias de la Salud, Departamento Biomédico Universidad de Antofagasta, Antofagasta, Chile
| | - Michael Czerwinski
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Erika Segear Johnson
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Sally Kornbluth
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Blanche Capel
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
| |
Collapse
|
15
|
Chatterjee R, Chattopadhyay S, Law S. Deregulation of vital mitotic kinase-phosphatase signaling in hematopoietic stem/progenitor compartment leads to cellular catastrophe in experimental aplastic anemia. Mol Cell Biochem 2016; 422:121-134. [PMID: 27632389 DOI: 10.1007/s11010-016-2811-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/29/2016] [Indexed: 01/09/2023]
Abstract
Aplastic anemia, the paradigm of bone marrow failure, is characterized by pancytopenic peripheral blood and hypoplastic bone marrow. Among various etiologies, inappropriate use of DNA alkylating drugs like cyclophosphamide and busulfan often causes the manifestation of the dreadful disease. Cell cycle impairment in marrow hematopoietic stem/progenitor compartment together with cellular apoptosis has been recognized as culpable factors behind aplastic pathophysiologies. However, the intricate molecular mechanisms remain unrevealed till date. In the present study, we have dealt with the mechanistic intervention of the disease by peripheral blood hemogram, bone marrow histopathology, cytopathology, hematopoietic kinetic study, scanning electron microscopy, DNA damage assessment and flowcytometric analysis of cellular proliferation and apoptosis in hematopoietic stem/progenitor cell (HSPC) rich marrow compartment using busulfan and cyclophosphamidemediated mouse model. To unveil the molecular mechanisms behind aplastic pathophysiology, we further investigated the role of some crucial mitotic and apoptotic regulators like Protein kinase-B (PKB), Gsk-3β, Cyclin-D1, PP2A, Cdc25c, Plk-1, Aurora kinase-A, Chk-1 regarding the hematopoietic catastrophe. Our observations revealed that the alteration of PKB-GSK-3β axis, Plk-1, and Aurora kinase-A expressions in HSPC compartment due to DNA damage response was associated with the proliferative impairment and apoptosis during aplastic anemia. The study established the correlation between the accumulation of DNA damage and alteration of the mentioned molecules in aplastic HSPCs that lead to the hematopoietic catastrophe. We anticipate that our findings will be beneficial for developing better therapeutic strategies for the dreadful disease concerned.
Collapse
Affiliation(s)
- Ritam Chatterjee
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata, 700073, West Bengal, India
| | - Sukalpa Chattopadhyay
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata, 700073, West Bengal, India
| | - Sujata Law
- Stem Cell Research and Application Unit, Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R Avenue, Kolkata, 700073, West Bengal, India.
| |
Collapse
|
16
|
Kim JH, Huh YH, Kim HR. Induction of Autophagy in the Striatum and Hypothalamus of Mice after 835 MHz Radiofrequency Exposure. PLoS One 2016; 11:e0153308. [PMID: 27073885 PMCID: PMC4830612 DOI: 10.1371/journal.pone.0153308] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/28/2016] [Indexed: 12/19/2022] Open
Abstract
The extensive use of wireless mobile phones and associated communication devices has led to increasing public concern about potential biological health-related effects of the exposure to electromagnetic fields (EMFs). EMFs emitted by a mobile phone have been suggested to influence neuronal functions in the brain and affect behavior. However, the affects and phenotype of EMFs exposure are unclear. We applied radiofrequency (RF) of 835 MHz at a specific absorption rate (SAR) of 4.0 W/kg for 5 hours/day for 4 and 12 weeks to clarify the biological effects on mouse brain. Interestingly, microarray data indicated that a variety of autophagic related genes showed fold-change within small range after 835 MHz RF exposure. qRT-PCR revealed significant up-regulation of the autophagic genes Atg5, LC3A and LC3B in the striatum and hypothalamus after a 12-week RF. In parallel, protein expression of LC3B-II was also increased in both brain regions. Autophagosomes were observed in the striatum and hypothalamus of RF-exposed mice, based on neuronal transmission electron microscopy. Taken together, the results indicate that RF exposure of the brain can induce autophagy in neuronal tissues, providing insight into the protective mechanism or adaptation to RF stress.
Collapse
Affiliation(s)
- Ju Hwan Kim
- Department of Pharmacology, College of Medicine, Dankook University, Cheonan, Chungnam, Republic of Korea
| | - Yang Hoon Huh
- Nano-Bio EM Research Group, Korea Basic Science Institute, Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Hak Rim Kim
- Department of Pharmacology, College of Medicine, Dankook University, Cheonan, Chungnam, Republic of Korea
- * E-mail:
| |
Collapse
|
17
|
Affiliation(s)
- Christopher L R Barratt
- Editor In Chief, MHR Reproductive and Developmental Biology, Medical School, Ninewells Hospital, University of Dundee, Dundee DD1 9SY, UK Assisted Conception Unit, NHS Tayside, Ninewells Hospital, Dundee DD1 9SY, UK
| |
Collapse
|
18
|
Intraovarian Transplantation of Female Germline Stem Cells Rescue Ovarian Function in Chemotherapy-Injured Ovaries. PLoS One 2015; 10:e0139824. [PMID: 26431320 PMCID: PMC4592213 DOI: 10.1371/journal.pone.0139824] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 09/16/2015] [Indexed: 11/19/2022] Open
Abstract
Early menopause and infertility often occur in female cancer patients after chemotherapy (CTx). For these patients, oocyte/embryo cryopreservation or ovarian tissue cryopreservation is the current modality for fertility preservation. However, the above methods are limited in the long-term protection of ovarian function, especially for fertility preservation (very few females with cancer have achieved pregnancy with cryopreserved ovarian tissue or eggs until now). In addition, the above methods are subject to their scope (females with no husband or prepubertal females with no mature oocytes). Thus, many females who suffer from cancers would not adopt the above methods pre- and post-CTx due to their uncertainty, safety and cost-effectiveness. Therefore, millions of women have achieved long-term survival after thorough CTx treatment and have desired to rescue their ovarian function and fertility with economic, durable and reliable methods. Recently, some studies showed that mice with infertility caused by CTx can produce normal offspring through intraovarian injection of exogenous female germline stem cells (FGSCs). Though exogenous FGSC can be derived from mice without immune rejection in the same strain, it is difficult to obtain human female germline stem cells (hFGSCs), and immune rejection could occur between different individuals. In this study, infertility in mice was caused by CTx, and the ability of FGSCs to restore ovarian function or even produce offspring was assessed. We had successfully isolated and purified the FGSCs from adult female mice two weeks after CTx. After infection with GFP-carrying virus, the FGSCs were transplanted into ovaries of mice with infertility caused by CTx. Finally, ovarian function was restored and the recipients produced offspring long-term. These findings showed that mice with CTx possessed FGSCs, restoring ovarian function and avoiding immune rejection from exogenous germline stem cells.
Collapse
|
19
|
Zhang Q, Xu M, Yao X, Li T, Wang Q, Lai D. Human amniotic epithelial cells inhibit granulosa cell apoptosis induced by chemotherapy and restore the fertility. Stem Cell Res Ther 2015; 6:152. [PMID: 26303743 PMCID: PMC4549019 DOI: 10.1186/s13287-015-0148-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 01/24/2015] [Accepted: 08/05/2015] [Indexed: 01/01/2023] Open
Abstract
Introduction Premature ovarian failure and insufficiency are significant long-term side-effects of chemotherapy for female cancer patients. Recently, stem cell transplantation has been identified as a promising treatment for premature ovarian failure and insufficiency. We have previously demonstrated that human amniotic epithelial cells (hAECs) migrate into injured tissue and promote the recovery of ovarian function in chemoablated mice. However, the molecular mechanism guiding this process remains unclear. Methods To further investigate the effect of hAECs on chemotherapy-induced apoptosis, cultured primary hAECs were injected intravenously into mice treated with cyclophosphamide and busulphan. Apoptosis of granulosa cells was observed by TUNEL staining, and apoptosis-related gene expression was performed on ovarian tissue by real-time PCR and Western blot 7 days after hAEC transplantation. Additionally, the ovarian function and fertility of mice were assessed via counts of follicles and mating experiments at 4 weeks after hAEC transplantation. Results hAECs significantly inhibited tumor necrosis factor-alpha-mediated granulosa cell apoptosis induced by chemotherapeutics and reduced the inflammatory reaction in ovaries at 7 days after transplantation. In addition, 4 weeks after transplantation, hAECs promoted the development of follicles and increased the number of cumulus oocyte complexes in chemoablated mice. Furthermore, hAECs improved ovarian mass and increased the number of follicles compared to those of the chemoablated group, and hAEC transplantation partially rescued the fertility of chemoablated mice. Conclusions hAEC transplantation promotes ovarian function by inhibiting tumor necrosis factor-alpha-mediated cell apoptosis and reducing inflammation in chemotherapy-induced premature ovarian failure. These results suggest a potential molecular mechanism for the effective therapy of hAEC transplantation in chemotherapy-induced premature ovarian failure and insufficiency. Electronic supplementary material The online version of this article (doi:10.1186/s13287-015-0148-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Qiuwan Zhang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| | - Minhua Xu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| | - Xiaofen Yao
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| | - Ting Li
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| | - Qian Wang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| | - Dongmei Lai
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 145, Guang-Yuan Road, Shanghai, 200030, People's Republic of China. .,Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, People's Republic of China.
| |
Collapse
|
20
|
Lai D, Wang F, Yao X, Zhang Q, Wu X, Xiang C. Human endometrial mesenchymal stem cells restore ovarian function through improving the renewal of germline stem cells in a mouse model of premature ovarian failure. J Transl Med 2015; 13:155. [PMID: 25964118 PMCID: PMC4490699 DOI: 10.1186/s12967-015-0516-y] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 05/04/2015] [Indexed: 12/13/2022] Open
Abstract
Background Human endometrial mesenchymal stem cells (EnSCs) derived from menstrual blood have mesenchymal stem/stromal cells (MSCs) characteristics and can differentiate into cell types that arise from all three germ layers. We hypothesized that EnSCs may offer promise for restoration of ovarian dysfunction associated with premature ovarian failure/insufficiency (POF/POI). Methods Mouse ovaries were injured with busulfan and cyclophosphamide (B/C) to create a damaged ovary mouse model. Transplanted EnSCs were injected into the tail vein of sterilized mice (Chemoablated with EnSCs group; n = 80), or culture medium was injected into the sterilized mice via the tail vein as chemoablated group (n = 80). Non-sterilized mice were untreated controls (n = 80). Overall ovarian function was measured using vaginal smears, live imaging, mating trials and immunohistochemical techniques. Results EnSCs transplantation increased body weight and improved estrous cyclicity as well as restored fertility in sterilized mice. Migration and localization of GFP-labeled EnSCs as measured by live imaging and immunofluorescent methods indicated that GFP-labeled cells were undetectable 48 h after cell transplantation, but were later detected in and localized to the ovarian stroma. 5’-bromodeoxyuridine (BrdU) and mouse vasa homologue (MVH) protein double-positive cells were immunohistochemically detected in mouse ovaries, and EnSC transplantation reduced depletion of the germline stem cell (GSCs) pool induced by chemotherapy. Conclusion EnSCs derived from menstrual blood, as autologous stem cells, may restore damaged ovarian function and offer a suitable clinical strategy for regenerative medicine. Electronic supplementary material The online version of this article (doi:10.1186/s12967-015-0516-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Dongmei Lai
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200030, China.
| | - Fangyuan Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200030, China.
| | - Xiaofen Yao
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200030, China.
| | - Qiuwan Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200030, China.
| | - Xiaoxing Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| | - Charlie Xiang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| |
Collapse
|
21
|
Sriraman K, Bhartiya D, Anand S, Bhutda S. Mouse Ovarian Very Small Embryonic-Like Stem Cells Resist Chemotherapy and Retain Ability to Initiate Oocyte-Specific Differentiation. Reprod Sci 2015; 22:884-903. [PMID: 25779995 DOI: 10.1177/1933719115576727] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This study was undertaken to investigate stem cells in adult mouse ovary, the effect of chemotherapy on them and their potential to differentiate into germ cells. Very small embryonic-like stem cells (VSELs) that were SCA-1+/Lin-/CD45-, positive for nuclear octamer-binding transforming factor 4 (OCT-4), Nanog, and cell surface stage-specific embryonic antigen 1, were identified in adult mouse ovary. Chemotherapy resulted in complete loss of follicular reserve and cytoplasmic OCT-4 positive progenitors (ovarian germ stem cells) but VSELs survived. In ovarian surface epithelial (OSE) cell cultures from chemoablated ovary, proliferating germ cell clusters and mouse vasa homolog/growth differentiation factor 9-positive oocyte-like structure were observed by day 6, probably arising as a result of differentiation of the surviving VSELs. Follicle-stimulating hormone (FSH) exerted a direct stimulatory action on the OSE and induced stem cells proliferation and differentiation into premeiotic germ cell clusters during intact chemoablated ovaries culture. The FSH analog pregnant mare serum gonadotropin treatment to chemoablated mice increased the percentage of surviving VSELs in ovary. The results of this study provide evidence for the presence of potential VSELs in mouse ovaries and show that they survive chemotherapy, are modulated by FSH, and retain the ability to undergo oocyte-specific differentiation. These results show relevance to women who undergo premature ovarian failure because of oncotherapy.
Collapse
Affiliation(s)
- Kalpana Sriraman
- Stem Cell Biology Department, National Institute for Research in Reproductive Health (NIRRH), Mumbai, Maharashtra, India
| | - Deepa Bhartiya
- Stem Cell Biology Department, National Institute for Research in Reproductive Health (NIRRH), Mumbai, Maharashtra, India
| | - Sandhya Anand
- Stem Cell Biology Department, National Institute for Research in Reproductive Health (NIRRH), Mumbai, Maharashtra, India
| | - Smita Bhutda
- Stem Cell Biology Department, National Institute for Research in Reproductive Health (NIRRH), Mumbai, Maharashtra, India
| |
Collapse
|
22
|
Tan SJ, Lee LJ, Tzeng CR, Wang CW, Hsu MI, Chen CH. Targeted anti-apoptosis activity for ovarian protection against chemotherapy-induced ovarian gonadotoxicity. Reprod Biomed Online 2014; 29:612-20. [DOI: 10.1016/j.rbmo.2014.07.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 07/05/2014] [Accepted: 07/08/2014] [Indexed: 11/28/2022]
|
23
|
Bui HT, Van Thuan N, Kwon DN, Choi YJ, Kang MH, Han JW, Kim T, Kim JH. Identification and characterization of putative stem cells in the adult pig ovary. Development 2014; 141:2235-44. [DOI: 10.1242/dev.104554] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Recently, the concept of ‘neo-oogenesis’ has received increasing attention, since it was shown that adult mammals have a renewable source of eggs. The purpose of this study was to elucidate the origin of these eggs and to confirm whether neo-oogenesis continues throughout life in the ovaries of the adult mammal. Adult female pigs were utilized to isolate, identify and characterize, including their proliferation and differentiation capabilities, putative stem cells (PSCs) from the ovary. PSCs were found to comprise a heterogeneous population based on c-kit expression and cell size, and also express stem and germ cell markers. Analysis of PSC molecular progression during establishment showed that these cells undergo cytoplasmic-to-nuclear translocation of Oct4 in a manner reminiscent of gonadal primordial germ cells (PGCs). Hence, cells with the characteristics of early PGCs are present or are generated in the adult pig ovary. Furthermore, the in vitro establishment of porcine PSCs required the presence of ovarian cell-derived extracellular regulatory factors, which are also likely to direct stem cell niche interactions in vivo. In conclusion, the present work supports a crucial role for c-kit and kit ligand/stem cell factor in stimulating the growth, proliferation and nuclear reprogramming of porcine PSCs, and further suggests that porcine PSCs might be the culture equivalent of early PGCs.
Collapse
Affiliation(s)
- Hong-Thuy Bui
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
- Department of Biotechnology, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam
- School of Biotechnology, Tan Tao University, Long An 81000, Vietnam
| | - Nguyen Van Thuan
- Department of Biotechnology, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam
- School of Biotechnology, Tan Tao University, Long An 81000, Vietnam
| | - Deug-Nam Kwon
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Yun-Jung Choi
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Min-Hee Kang
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Jae-Woong Han
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Teoan Kim
- Department of Physiology, Catholic University of Daegu School of Medicine, Daegu 705718, Korea
| | - Jin-Hoi Kim
- Department of Animal Biotechnology, College of Animal Bioscience & Biotechnology, Konkuk University, Seoul 143-701, Korea
| |
Collapse
|
24
|
Lai D, Wang F, Dong Z, Zhang Q. Skin-derived mesenchymal stem cells help restore function to ovaries in a premature ovarian failure mouse model. PLoS One 2014; 9:e98749. [PMID: 24879098 PMCID: PMC4039525 DOI: 10.1371/journal.pone.0098749] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 05/07/2014] [Indexed: 12/13/2022] Open
Abstract
Skin-derived mesenchymal stem cells (SMSCs) can differentiate into the three embryonic germ layers. For this reason, they are considered a powerful tool for therapeutic cloning and offer new possibilities for tissue therapy. Recent studies showed that skin-derived stem cells can differentiate into cells expressing germ-cell specific markers in vitro and form oocytes in vivo. The idea that SMSCs may be suitable for the treatment of intractable diseases or traumatic tissue damage has attracted attention. To determine the ability of SMSCs to reactivate injured ovaries, a mouse model with ovaries damaged by busulfan and cyclophosphamide was developed and is described here. Female skin-derived mesenchymal stem cells (F-SMSCs) and male skin-derived mesenchymal stem cells (M-SMSCs) from red fluorescence protein (RFP) transgenic adult mice were used to investigate the restorative effects of SMSCs on ovarian function. Significant increases in total body weight and the weight of reproductive organs were observed in the treated animals. Both F-SMSCs and M-SMSCs were shown to be capable of partially restoring fertility in chemotherapy-treated females. Immunostaining with RFP and anti-Müllerian hormone (AMH) antibodies demonstrated that the grafted SMSCs survived, migrated to the recipient ovaries. After SMSCs were administered to the treated mice, real-time PCR showed that the expression levels of pro-inflammatory cytokines TNF-α, TGF-β, IL-8, IL-6, IL-1β, and IFNγ were significantly lower in the ovaries than in the untreated controls. Consistent with this observation, expression of oogenesis marker genes Nobox, Nanos3, and Lhx8 increased in ovaries of SMSCs-treated mice. These findings suggest that SMSCs may play a role within the ovarian follicle microenvironment in restoring the function of damaged ovaries and could be useful in reproductive health.
Collapse
Affiliation(s)
- Dongmei Lai
- The Center of Research Laboratory, and Department of Gynecology, The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- * E-mail:
| | - Fangyuan Wang
- The Center of Research Laboratory, and Department of Gynecology, The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Zhangli Dong
- The Center of Research Laboratory, and Department of Gynecology, The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qiuwan Zhang
- The Center of Research Laboratory, and Department of Gynecology, The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| |
Collapse
|
25
|
Bhartiya D, Sriraman K, Parte S, Patel H. Ovarian stem cells: absence of evidence is not evidence of absence. J Ovarian Res 2013; 6:65. [PMID: 24044496 PMCID: PMC3848624 DOI: 10.1186/1757-2215-6-65] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 09/15/2013] [Indexed: 01/17/2023] Open
Abstract
Background Lei and Spradling in a recent study published in PNAS failed to detect ‘germline cysts’ by elegant studies using lineage tracing approach and thus concluded that adult mouse ovaries lack stem cells. They proposed that primordial follicle pool generated during fetal life is sufficient to sustain oogenesis and that there is no renewal of oocytes during adult life. Contrary to their results, we have reported presence of very small pluripotent, embryonic-like stem cells (VSELs), their immediate descendants (OGSCs) and germ cell ‘cysts’ or ‘nests’ (formed by rapid cell division and incomplete cytokinesis) in surface epithelial cell smears of adult sheep, monkey and human ovaries. Methods In the present study, ovaries were collected from adult mouse (treated with 5 IU pregnant mare serum gonadotropin, PMSG) and sheep (from slaughter house) and testis from mouse treated with busulphan (25 mg/Kg). Ovarian surface epithelial (OSE) cells and testicular smears were studied for the presence of cysts. Sheep OSE smears were also used to show cytoplasmic continuity amongst the cyst cells studied by immunolocalization and confocal microscopy of stem cells specific markers OCT-4 and SSEA-4. Results Cysts were observed and confocal microscopy imaging confirmed cytoplasmic continuity amongst the cells comprising the cysts. Conclusions Cysts represent self-renewal and clonal expansion of stem cells with incomplete cytokinesis and are a hallmark feature of stem cells. We suggest the use of PMSG stimulated mouse ovaries and use of more primitive markers like OCT-4 or STELLA rather than MVH for lineage tracing studies to conclusively show presence of stem cells by lineage-tracing studies.
Collapse
Affiliation(s)
- Deepa Bhartiya
- Stem Cell Biology Department, National Institute for Research in Reproductive Health, Mumbai 400012, India.
| | | | | | | |
Collapse
|