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Zhou Y, Jin Y, Wu T, Wang Y, Dong Y, Chen P, Hu C, Pan N, Ye C, Shen L, Lin M, Fang T, Wu R. New insights on mitochondrial heteroplasmy observed in ovarian diseases. J Adv Res 2023:S2090-1232(23)00372-7. [PMID: 38061426 DOI: 10.1016/j.jare.2023.11.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/26/2023] [Accepted: 11/29/2023] [Indexed: 01/01/2024] Open
Abstract
BACKGROUND The reportedly high mutation rate of mitochondrial DNA (mtDNA) may be attributed to the absence of histone protection and complete repair mechanisms. Mitochondrial heteroplasmy refers to the coexistence of wild-type and mutant mtDNA. Most healthy individuals carry a low point mutation load (<1 %) in their mtDNA, typically without any discernible phenotypic effects. However, as it exceeds a certain threshold, it may cause the onset of various diseases. Since the ovary is a highly energy-intensive organ, it relies heavily on mitochondrial function. Mitochondrial heteroplasmy can potentially contribute to a variety of significant ovarian disorders. AIM OF REVIEW In this review, we have elucidated the close relationship between mtDNA heteroplasmy and ovarian diseases, and summarized novel avenues and strategies for the potential treatment of these ovarian diseases. KEY SCIENTIFIC CONCEPTS OF REVIEW Mitochondrial heteroplasmy can potentially contribute to a variety of significant ovarian disorders, including polycystic ovary syndrome, premature ovarian insufficiency, and endometriosis. Current strategies related to mitochondrial heteroplasmy are untargeted and have low bioavailability. Nanoparticle delivery systems loaded with mitochondrial modulators, mitochondrial replacement/transplantation therapy, and mitochondria-targeted gene editing therapy may offer promising paths towards potentially more effective treatments for these diseases, despite ongoing challenges.
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Affiliation(s)
- Yong Zhou
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China; Women's Reproductive Health Key Laboratory of Zhejiang Province, People's Republic of China
| | - Yang Jin
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Tianyu Wu
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Yinfeng Wang
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Yuanhang Dong
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Pei Chen
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Changchang Hu
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Ningping Pan
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Chaoshuang Ye
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Li Shen
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Mengyan Lin
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Tao Fang
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China
| | - Ruijin Wu
- Women's Hospital, Zhejiang University School of Medicine, No. 1 Xueshi Road, Hangzhou, Zhejiang 310006, People's Republic of China; Women's Reproductive Health Key Laboratory of Zhejiang Province, People's Republic of China; Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, People's Republic of China.
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Beeram H, Siddamalla S, Tumu VR, KV V, Vidala A, Deenadayal M, Sisinthy S, Bhanoori M. Genetic Variants of VDR and PGC-1α Are Not Associated with the Risk of Endometriosis in Indian Women. DNA Cell Biol 2022; 41:987-995. [DOI: 10.1089/dna.2022.0350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Himabindu Beeram
- Department of Biochemistry, Osmania University, Hyderabad, India
| | | | | | - Veena KV
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Akanksha Vidala
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Mamata Deenadayal
- Infertility Institute and Research Centre (IIRC), Secunderabad, India
| | - Shivaji Sisinthy
- Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
- Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India
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Huebner H, Lubrich H, Blum S, Antoniadis S, Lermann J, Ekici A, Fasching PA, Beckmann MW, Ruebner M, Burghaus S. Comparison of methods for isolation and quantification of circulating cell-free DNA from patients with endometriosis. Reprod Biomed Online 2021; 43:788-798. [PMID: 34493460 DOI: 10.1016/j.rbmo.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 07/13/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
RESEARCH QUESTION Which is the optimal extraction method for isolating and quantifying circulating cell-free DNA (ccfDNA) from patients with endometriosis? Endometriosis is a common benign disease, associated with pain, infertility and reduced quality of life. Endometriosis is also a known risk factor for various cancers. Robust biomarkers for early detection and prediction of prognosis, however, are lacking. CcfDNA is an easy to obtain biomarker associated with prognosis of cancer patients and enables non-invasive analysis of somatic mutations. Recently, elevated levels of ccfDNA were detected in patients with endometriosis. DESIGN Two different ccfDNA extraction methods were compared: Maxwell RSC ccfDNA plasma kit (Maxwell) and QiAamp minElute ccfDNA mini kit (QIAamp). The ccfDNA and circulating mitochondrial DNA (mtDNA) quantities from 34 patients diagnosed with endometriosis were analysed. Fluorometric measurement and quantitative reverse transcription polymerase chain reaction (qRT-PCR) of short and long ALU and mtDNA fragments were used to quantiy ccfDNA. RESULTS The yield of ccfDNA isolated with the Maxwell method was significantly higher compared with the QIAamp method (P < 0.0001). Integrity of ccfDNA was significantly higher in the QIAamp isolate (P < 0.0001). Recovered mtDNA was not significantly different between both extraction methods used. CONCLUSIONS The choice of extraction method can significantly influence the ccfDNA output and integrity. Both methods, however, enabled isolation of sufficient ccfDNA for further downstream applications. With this approach, isolation of ccfDNA could enable the non-invasive detection and analysis of somatic mutation within endometriosis tissue.
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Affiliation(s)
- Hanna Huebner
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Hannah Lubrich
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Simon Blum
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Sophia Antoniadis
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Johannes Lermann
- Department of Obstetrics and Gynecology, Klinikum Klagenfurt am Wörthersee, Austria
| | - Arif Ekici
- Institute of Human Genetics, Erlangen University Hospital, Friedrich-Alexander University, Erlangen-Nürnberg, Erlangen, Germany
| | - Peter A Fasching
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Matthias W Beckmann
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Matthias Ruebner
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - Stefanie Burghaus
- Department of Gynecology and Obstetrics, Erlangen University Hospital, University Endometriosis Center for Franconia, Friedrich-Alexander University Erlangen-Nürnberg, Germany.
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Asally R, Markham R, Manconi F. Mitochondrial DNA haplogroup H association with endometriosis and possible role in inflammation and pain. JOURNAL OF ENDOMETRIOSIS AND PELVIC PAIN DISORDERS 2020. [DOI: 10.1177/2284026520940518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduction: Endometriosis is an inflammatory disease characterised by the presence of endometrial-like tissue outside the uterus and affects approximately 10%–15% of women in their reproductive years. Pain is one of the predominant symptoms of the disease. Oxidative stress is involved in the pathophysiology of endometriosis and develops when there is an imbalance between the reactive oxygen species and reactive nitrogen species production, and the elimination capacity of antioxidants in the reproductive tract. High levels of reactive oxygen species can induce pain indirectly through oxidative stress-associated inflammation or directly through sensitising the nociceptive neurons that transmit the signals to the cerebral sensory cortex which are perceived as a feeling of pain. Mitochondria are the main source of reactive oxygen species, which generate through oxidative phosphorylation. Given that the mitochondria are involved in reactive oxygen species formation and energy production, which are required for the activation and proliferation of peripheral lymphocytes, it has been suggested that mitochondrial DNA variants are involved in the pathogenesis of endometriosis. This study has provided a better understanding of maternally inherited risk factors which contribute to the pain mechanisms associated with endometriosis. Results: Mitochondrial DNA haplogroup H was found to be significantly higher in women with endometriosis. This study was the first to report the association between the European mitochondrial haplogroup H and the risk of pain associated with endometriosis. Discussion: The results suggest that there are maternally inherited risk factors in women with endometriosis causing high reactive oxygen species production and oxidative stress, which facilitate pain generation in women with endometriosis.
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Affiliation(s)
- Razan Asally
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
- Saudi Arabian Ministry of Higher Education, Riyadh, Saudi Arabia
| | - Robert Markham
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
| | - Frank Manconi
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
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Li X, Ji D, Marley JL, Zou W, Deng X, Cao Y, Zhang Z, Liu Y, Wei Z, Zhou P, Cao Y. Association between mitochondrial DNA D-loop region polymorphisms and endometriosis in a Chinese population. J Assist Reprod Genet 2020; 37:2171-2179. [PMID: 32535813 DOI: 10.1007/s10815-020-01853-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/07/2020] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVE To investigate the correlation between endometriosis and mitochondrial DNA (mtDNA) D-loop single nucleotide polymorphisms (SNPs) and haplotype, as well as the predictive power of certain SNPs in reproductive outcomes in a Chinese Han population. METHODS A case-control study was conducted in which 125 endometriosis patients and 124 controls were recruited from an academic fertility center. The entire 1124-bp D-loop region of mtDNA of whole blood samples from all subjects was amplified, sequenced, and compared with the revised Cambridge Reference Sequence (rCRS) to identify SNPs and haplotypes. The association between D-loop SNPs and embryo quality and clinical outcome following in vitro fertilization (IVF) was also assessed. RESULTS A total of 321 polymorphisms were identified by sequencing, allowing comparison of the D-loop between endometriosis patients and controls. The frequency of the AC523-524 del, T16172C, and C16290T variants were significantly higher, while the frequency of polymorphisms T195C, 573XCins, 16036Gins, 16049Gins, T16140C, A16183C, T16189C, and 16193Cins were lower, in the endometriosis group compared with the control group (p < 0.05). Within the endometriosis group, the high-quality blastocyst rate in the 16,290T subgroup was significantly lower than that in the 16290C subgroup (p < 0.05). In the control group, 16519C carriers showed a lower rate of high-quality blastocyst development compared with 16519T (p < 0.05). In endometriosis patients clinical pregnancy rate was significantly lower in the 150T subgroup compared with the 150C subgroup (p < 0.05). DISCUSSION Data confirms a correlation between D-loop polymorphisms and endometriosis. The polymorphisms AC523-524 del, T16172C, and C16290T are associated with increased risk of endometriosis, while T195C, 573XCins, 16036Gins, 16049Gins, T16140C, A16183C, T16189C, and 16193Cins are associated with decreased risk of endometriosis. In addition, C16290T and T16519C can be associated with poor quality blastocyst development in population with and without endometriosis, respectively and C150T can be a predictor of poor IVF outcome.
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Affiliation(s)
- Xinyuan Li
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Dongmei Ji
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China. .,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China. .,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China. .,Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81Meishan Road, Hefei, 230032, Anhui, China.
| | - Jordan Lee Marley
- Biosciences Institute, Newcastle University, 10 Victoria street, Newcastle upon Tyne, Tyne and Wear, NE4 7JU, UK
| | - Weiwei Zou
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Xiaohong Deng
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Yu Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Zhiguo Zhang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Yajing Liu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Zhaolian Wei
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Ping Zhou
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Yunxia Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei, 230022, Anhui, China. .,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China. .,Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No. 81 Meishan Road, Hefei, 230032, Anhui, China. .,Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81Meishan Road, Hefei, 230032, Anhui, China.
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Zhang J, Bao Y, Zhou X, Zheng L. Polycystic ovary syndrome and mitochondrial dysfunction. Reprod Biol Endocrinol 2019; 17:67. [PMID: 31420039 PMCID: PMC6698037 DOI: 10.1186/s12958-019-0509-4] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/01/2019] [Indexed: 02/07/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is a prevalent hormonal disorder of premenopausal women worldwide and is characterized by reproductive, endocrine, and metabolic abnormalities. The clinical manifestations of PCOS include oligomenorrhea or amenorrhea, hyperandrogenism, ovarian polycystic changes, and infertility. Women with PCOS are at an increased risk of suffering from type 2 diabetes; me\tabolic syndrome; cardiovascular events, such as hypertension, dyslipidemia; gynecological diseases, including infertility, endometrial dysplasia, endometrial cancer, and ovarian malignant tumors; pregnancy complications, such as premature birth, low birthweight, and eclampsia; and emotional and mental disorders in the future. Although numerous studies have focused on PCOS, the underlying pathophysiological mechanisms of this disease remain unclear. Mitochondria play a key role in energy production, and mitochondrial dysfunction at the cellular level can affect systemic metabolic balance. The recent wide acceptance of functional mitochondrial disorders as a correlated factor of numerous diseases has led to the presupposition that abnormal mitochondrial metabolic markers are associated with PCOS. Studies conducted in the past few years have confirmed that increased oxidative stress is associated with the progression and related complications of PCOS and have proven the relationship between other mitochondrial dysfunctions and PCOS. Thus, this review aims to summarize and discuss previous and recent findings concerning the relationship between mitochondrial dysfunction and PCOS.
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Affiliation(s)
- Jingshun Zhang
- grid.452829.0Reproductive Medical Center, Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin China
| | - Yigang Bao
- grid.452829.0Reproductive Medical Center, Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin China
| | - Xu Zhou
- 0000 0004 1760 5735grid.64924.3dCollege of Animal Sciences, Jilin University, Changchun, Jilin China
| | - Lianwen Zheng
- grid.452829.0Reproductive Medical Center, Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin China
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7
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Reddy TV, Govatati S, Deenadayal M, Sisinthy S, Bhanoori M. Impact of mitochondrial DNA copy number and displacement loop alterations on polycystic ovary syndrome risk in south Indian women. Mitochondrion 2017; 44:35-40. [PMID: 29278759 DOI: 10.1016/j.mito.2017.12.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 10/18/2017] [Accepted: 12/21/2017] [Indexed: 12/15/2022]
Abstract
Sequencing of mitochondrial displacement-loop (D-loop) of polycystic ovary syndrome (PCOS) patients and (n=118) and controls (n=114) of south Indian origin showed significant association of D310 (P=0.042) and A189G (P=0.018) SNPs with PCOS. qRT-PCR analysis revealed significantly diminished mtDNA copy number in PCOS patients compared to controls (P=0.038). Furthermore, mtDNA copy number was significantly lower in PCOS cases carrying D310 and 189G alleles when compared to non-carriers (P=0.001 and 0.006 respectively). The D310 carriers also showed significantly elevated LH/FSH ratio (P=0.026). In conclusion, mtDNA D-loop and copy number alterations may constitute an inheritable risk factor for PCOS in south Indian women.
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Affiliation(s)
| | - Suresh Govatati
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Mamata Deenadayal
- Infertility Institute and Research Centre (IIRC), Secundrabad, India
| | - Shivaji Sisinthy
- Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India.
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8
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Andres MP, Cardena MMSG, Fridman C, Podgaec S. Polymorphisms of mitochondrial DNA control region are associated to endometriosis. J Assist Reprod Genet 2017; 35:533-538. [PMID: 29124462 DOI: 10.1007/s10815-017-1082-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 11/01/2017] [Indexed: 01/10/2023] Open
Abstract
PURPOSE Polymorphisms in the control region of mitochondrial DNA (mtDNA) can affect generation of reactive oxygen species and impact in the pathogenesis of endometriosis. This study investigated the association of mtDNA polymorphisms with endometriosis. METHODS Patients were divided in two groups: endometriosis (n = 90) and control (n = 92). Inclusion criteria were as follows: women between 18 and 50 years, with histological diagnosis and surgical staging of endometriosis (endometriosis group) or undergoing gynecological surgery for tubal ligation, leiomyoma, or ovarian cysts, with no evidence of endometriosis (control group). DNA extraction was performed from peripheral blood. Sanger sequencing of mtDNA control region was performed, and polymorphisms were determined comparing the sequences obtained with the Cambridge Reference Sequence. RESULTS The frequency of polymorphisms T16217C (14.4 and 5.4% of endometriosis and control group, respectively; p = 0.049) and G499A (13.3 vs. 4.3%; p = 0.038) was higher in the endometriosis group, while T146C (32.6 vs. 18.9%; p = 0.042) and 573.2C (5.6 vs. 29.3%; p < 0.001) were lower. No difference was observed in haplogroups between groups. CONCLUSION mtDNA polymorphisms T16217C and G499A were associated with endometriosis, while T416C and 573.2C were shown to be associated with an absence of disease.
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Affiliation(s)
- Marina Paula Andres
- Gynecologic Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
| | - Mari Maki Siria Godoy Cardena
- Department of Legal Medicine, Ethics and Occupational Health, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Cintia Fridman
- Department of Legal Medicine, Ethics and Occupational Health, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Sergio Podgaec
- Gynecologic Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Jewish Teaching and Research Institute, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
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9
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Reddyvari H, Govatati S, Matha SK, Korla SV, Malempati S, Pasupuleti SR, Bhanoori M, Nallanchakravarthula V. Therapeutic effect of green tea extract on alcohol induced hepatic mitochondrial DNA damage in albino wistar rats. J Adv Res 2017; 8:289-295. [PMID: 28337346 PMCID: PMC5349453 DOI: 10.1016/j.jare.2017.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/12/2017] [Accepted: 02/16/2017] [Indexed: 12/12/2022] Open
Abstract
The present study principally sought to investigate the effect of green tea extract (GTE) supplementation on hepatic mitochondrial DNA (mtDNA) damage in alcohol receiving rats. MtDNA was isolated from hepatic tissues of albino wistar rats after alcohol treatment with and without GTE supplementation. Entire displacement loop (D-loop) of mtDNA was screened by PCR-Sanger's sequencing method. In addition, mtDNA deletions and antioxidant activity were measured in hepatic tissue of all rats. Results showed increased frequency of D-loop mutations in alcoholic rats (ALC). DNA mfold analysis predicted higher free energy for 15507C and 16116C alleles compared to their corresponding wild alleles which represents less stable secondary structures with negative impact on overall mtDNA function. Interestingly, D-loop mutations observed in ALC rats were successfully restored on GTE supplementation. MtDNA deletions were observed in ALC rats, but intact native mtDNA was found in ALC + GTE group suggesting alcohol induced oxidative damage of mtDNA and ameliorative effect of GTE. Furthermore, markedly decreased activities of glutathione peroxidise, superoxide dismutase, catalase and glutathione content were identified in ALC rats; however, GTE supplementation significantly (P < 0.05) restored these levels close to normal. In conclusion, green tea could be used as an effective nutraceutical against alcohol induced mitochondrial DNA damage.
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Affiliation(s)
- Hymavathi Reddyvari
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur 515 003, India
| | - Suresh Govatati
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur 515 003, India
| | - Sumanth Kumar Matha
- Department of Environmental Sciences, Andhra University, Visakhapatnam 530 003, India
| | - Swapna Vahini Korla
- Department of Biotechnology, Dr BR Ambedkar University, Srikakulam 532 410, India
| | - Sravanthi Malempati
- Department of Biochemistry, Krishna University Dr. MRAR PG Center, Nuzvid 521 201, India
| | - Sreenivasa Rao Pasupuleti
- Department of Advanced Research Centre, Narayana Medical College and Hospital, Nellore 524 003, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad 500 007, India
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Govatati S, Saradamma B, Malempati S, Dasi D, Thupurani MK, Nagesh N, Shivaji S, Bhanoori M, Tamanam RR, Nallanchakravarthula V, Pasupuleti SR. Association of mitochondrial displacement loop polymorphisms with risk of colorectal cancer in south Indian population. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 28:632-637. [PMID: 27159714 DOI: 10.3109/24701394.2016.1160076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mitochondrial displacement loop (D-loop) is the hot spot for mitochondrial DNA (mtDNA) alterations which influence the generation of cellular reactive oxygen species. In the present study, we sequenced the entire mitochondrial D-loop region (1124 bp) of colorectal cancer (CRC) patients (n = 174) and controls (n = 170) of south Indian origin to identify significant mutations/polymorphisms. Our results showed 152 polymorphisms in the D-loop region of patients and/or controls. Polymorphisms were predominantly located in hypervariable region I (54.6%) than in II (45.4%) of D-loop region. The frequencies of 310'C' insertion (p = 0.0078), T16189C (p = 0.0097) variants and 310'C'ins/16189C haplotype (p = 0.0029) were significantly higher in cases than in controls. Furthermore, strong linkage disequilibrium was observed between nucleotide position 310 and 16189 in cases (D'=0.68) as compared with controls (D'=0.27). In conclusion, mitochondrial D-loop sequence alterations may constitute inherent risk factor for CRC.
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Affiliation(s)
- Suresh Govatati
- a Department of Biochemistry , Sri Krishnadevaraya University , Anantapur , India
| | - Bulle Saradamma
- a Department of Biochemistry , Sri Krishnadevaraya University , Anantapur , India
| | - Sravanthi Malempati
- b Department of Biochemistry , DrMRAR PG Center, Krishna University , Nuzvid , India
| | - Divyamaanasa Dasi
- c Gandhi Institute of Technology and Management Dental College , Visakhapatnam , India
| | | | - Narayana Nagesh
- e CSIR-Centre for Cellular and Molecular Biology , Hyderabad , India
| | - Sisinthy Shivaji
- e CSIR-Centre for Cellular and Molecular Biology , Hyderabad , India
| | - Manjula Bhanoori
- f Department of Biochemistry , Osmania University , Hyderabad , India
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Govatati S, Malempati S, Saradamma B, Divyamaanasa D, Naidu BP, Bramhachari PV, Narayana N, Shivaji S, Bhanoori M, Tamanam RR, Rao PS, Nallanchakravarthula V. Manganese-superoxide dismutase (Mn-SOD) overexpression is a common event in colorectal cancers with mitochondrial microsatellite instability. Tumour Biol 2016; 37:10357-64. [PMID: 26846100 DOI: 10.1007/s13277-016-4918-0] [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: 10/30/2015] [Accepted: 01/27/2016] [Indexed: 02/07/2023] Open
Abstract
Mitochondrial displacement loop (D-loop) is a hot spot for mitochondrial DNA (mtDNA) alterations that effects cellular reactive oxygen species (ROS) generation. Manganese-superoxide dismutase (Mn-SOD) is a major antioxidant enzyme that protects cells from ROS-mediated damage. In the present study, we investigated the relationship between sequence alterations of mitochondrial D-loop and Mn-SOD expression in colorectal cancer (CRC). Genotyping of entire mitochondrial D-loop (1124 bp) was carried out on mtDNA of analogous tumor and normal tissues from 35 CRC patients of south Indian origin by PCR-sequencing analysis. Tumor-specific large-scale mtDNA deletions and Mn-SOD expression was analyzed by PCR and Western blot analysis, respectively. We identified 87 polymorphisms in the D-loop region of tumor and/or control tissues. Polymorphisms were predominantly located in hypervariable region I (67.9 %) than in II (32.1 %) of D-loop. Significantly increased mtDNA microsatellite instability (mtMSI) [310'C' insertion (P = 0.00001) and T16189C (P = 0.0007)] and elevated Mn-SOD expression was observed in tumor tissues compared with controls. Interestingly, mtMSI was significantly high in tumors with Mn-SOD overexpression. Tumor-specific large-scale mtDNA deletions were not observed in CRC tissues. In conclusion, mtMSI and Mn-SOD overexpression are a common event in CRC. The analysis of mtMSI and/or Mn-SOD expression might help to identify patients at high risk for disease outcome, thereby helping to refine therapeutic decisions in CRC.
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Affiliation(s)
- Suresh Govatati
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, 515 003, India
| | - Sravanthi Malempati
- Department of Biochemistry, Dr. MRAR PG Center, Krishna University, Nuzvid, India
| | - Bulle Saradamma
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, 515 003, India
| | - Dasi Divyamaanasa
- Gandhi Institute of Technology and Management Dental College, Visakhapatnam, India
| | - B Prathap Naidu
- Department of Biotechnology, Krishna University, Machilipatnam, India
| | | | - Nagesh Narayana
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Sisinthy Shivaji
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India.,Presently at: Jhaveri Microbiology Centre, L V Prasad Eye Institute, Hyderabad, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India
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Govatati S, Challa K, Reddy SB, Pramod K, Deenadayal M, Chakravarty B, Shivaji S, Bhanoori M. BRCA1 alterations are associated with endometriosis, but BRCA2 alterations show no detectable endometriosis risk: a study in Indian population. J Assist Reprod Genet 2015; 32:277-85. [PMID: 25380576 PMCID: PMC4354195 DOI: 10.1007/s10815-014-0379-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 10/27/2014] [Indexed: 01/05/2023] Open
Abstract
PURPOSE To investigate the role of genetic variations and expression alterations of BRCA1 and BRCA2 genes in the pathophysiology of endometriosis. METHODS A genetic association study was conducted in 573 endometriosis cases and 490 controls of Indian origin. We genotyped 13 selected promoter SNPs of BRCA1 gene and 2 selected promoter SNPs of BRCA2 gene by PCR-sequencing analysis. In addition, to better understand genetic contributions to the pathophysiology of endometriosis, the expression pattern of BRCA1 & 2 was analyzed in the eutopic endometria of endometriosis cases and controls by western-blot and immunohistochemical analysis. RESULTS Our results revealed significant association between BRCA1 rs71361504 (-/GTT) SNP and endometriosis risk in Indian women (P < 0.0001), while the remaining SNPs of both BRCA1 & 2 genes showed no difference between cases and controls. Western-blot and immunohistochemical analysis revealed significantly decreased BRCA1 expression levels in eutopic endometria of patients compared with controls (P < 0.05). Furthermore, nuclear BRCA1 was frequently lost compared with cytoplasmic BRCA1 in eutopic endometria of patients. Expression of BRCA2 did not differ between patients and controls. CONCLUSIONS BRCA1 rs71361504 SNP may modify the endometriosis risk in Indian women. In addition, decreased expression of BRCA1 may play an important role in the pathophysiology of endometriosis. The analysis of BRCA1 genetic variants and/or expression might help to identify patients at high risk for disease outcome.
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Affiliation(s)
- Suresh Govatati
- />Department of Biochemistry, Osmania University, Hyderabad, 500 007 India
| | - Kiran Challa
- />Department of Genetics, Osmania University, Hyderabad, 500 007 India
| | - Sunita B. Reddy
- />Department of Biochemistry, Osmania University, Hyderabad, 500 007 India
| | - Kayathi Pramod
- />Department of Biochemistry, Osmania University, Hyderabad, 500 007 India
| | - Mamata Deenadayal
- />Infertility Institute and Research Centre (IIRC), Secundrabad, 500 003 India
| | | | - Sisinthy Shivaji
- />Centre for Cellular and Molecular Biology (CCMB), Hyderabad, 500 007 India
- />Jhaveri Microbiology Centre, L V Prasad Eye Institute, Hyderabad, 500034 India
| | - Manjula Bhanoori
- />Department of Biochemistry, Osmania University, Hyderabad, 500 007 India
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Endometriosis may be associated with mitochondrial dysfunction in cumulus cells from subjects undergoing in vitro fertilization-intracytoplasmic sperm injection, as reflected by decreased adenosine triphosphate production. Fertil Steril 2014; 103:347-52.e1. [PMID: 25516080 DOI: 10.1016/j.fertnstert.2014.11.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/19/2014] [Accepted: 11/04/2014] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To determine whether endometriosis is associated with mitochondrial dysfunction in cumulus (granulosa [GC]) cells of subjects undergoing IVF-intracytoplasmic sperm injection (ICSI). DESIGN Prospective cohort study. SETTING An IVF clinic in a tertiary academic care center. PATIENT(S) Eleven women with endometriosis and 39 controls. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Cumulus cell adenosine triphosphate (ATP) levels, mitochondrial DNA (mtDNA), and genomic DNA (gDNA) number. RESULT(S) Cumulus cell ATP content was 65% lower in subjects with surgically proven endometriosis (median 312.5 attomoles/ng total DNA, interquartile range = 116.0-667.8) compared with controls (median 892.4 attomoles/ng total DNA, interquartile range = 403.0-1,412.2). There was no significant difference in mtDNA:gDNA ratio. There were no significant differences in age, body mass index (BMI), basal serum FSH level, total oocyte number, metaphase II (M2) oocyte number, metaphase I oocyte number, percentage of M2 oocytes, fertilization rate, implantation rate, or pregnancy rate (PR). Multivariate regression analysis showed significant positive correlations between ATP and [1] M2 oocyte number (r = 0.307) and [2] pregnancy (r = 0.332). There were also trends toward positive correlations between ATP and [3] age (r = 0.283), [4] total number of oocytes (r = 0.271), [5] percentage of M2 oocytes (r = 0.249), and [6] implantation rate (r = 0.293). There were no statistically significant correlations between mtDNA:gDNA ratio and any demographic factors or clinical outcomes measured. CONCLUSION(S) Surgically confirmed endometriosis may be associated with cumulus cell mitochondrial dysfunction in subjects undergoing IVF-ICSI for infertility, as reflected by decreased ATP production.
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Govatati S, Singamsetty GK, Nallabelli N, Malempati S, Rao PS, Madamchetty VKK, Govatati S, Kanapuram R, Narayana N, Bhanoori M, Kassetty K, Nallanchakravarthula V. Contribution of cyclin D1 (CCND1) and E-cadherin (CDH1) alterations to colorectal cancer susceptibility: a case-control study. Tumour Biol 2014; 35:12059-67. [PMID: 25146682 DOI: 10.1007/s13277-014-2505-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 08/13/2014] [Indexed: 12/26/2022] Open
Abstract
Cyclin D1 (CCND1) and E-cadherin (CDH1) are two important genes of the β-catenin/LEF pathway that is involved in tumorigenesis of various cancers including colorectal cancer (CRC). However, studies of the association between genetic variants of these two genes and CRC have shown conflicting results. We conducted a genetic association study in South Indian population (cases, 103; controls, 107) to assess the association of CCND1 870G/A and CDH1 -160C/A single nucleotide polymorphisms (SNPs) with CRC risk. Genotyping of SNPs was performed by PCR sequencing analysis. Haplotype frequencies for multiple loci and the standardized disequilibrium coefficient (D') for pair-wise linkage disequilibrium (LD) were assessed by Haploview Software. In addition, to better understand the role of CCND1 and CDH1 in the pathophysiology of CRC, the expression pattern was evaluated in analogous tumor and adjacent normal tissues from 23 CRC patients by Western blot analysis. The frequencies of CCND1 870A/A (P = 0.045) genotype, CDH1 -160A allele (P = 0.042), and 870A/-160A haplotype (P = 0.002) were significantly higher in patients as compared with controls. Strong LD was observed between 870G/A and -160C/A SNPs in cases (D' = 0.76) as compared to controls (D' = 0.32). Furthermore, elevated CCND1 and diminished CDH1 expression was observed in tumor tissue as compared with analogous normal tissue of CRC patients. Interestingly, advanced-stage tumors showed wider expression alterations than in early-stage tumors. In conclusion, CCND1 870G/A and CDH1 -160C/A SNPs may modify the risk of CRC susceptibility in South Indian population. In addition, elevated CCND1 and diminished CDH1 expression appears to be useful prognostic markers for CRC.
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Affiliation(s)
- Suresh Govatati
- Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, India
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Nothnick WB, Graham A, Holbert J, Weiss MJ. miR-451 deficiency is associated with altered endometrial fibrinogen alpha chain expression and reduced endometriotic implant establishment in an experimental mouse model. PLoS One 2014; 9:e100336. [PMID: 24937656 PMCID: PMC4061076 DOI: 10.1371/journal.pone.0100336] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 05/26/2014] [Indexed: 11/18/2022] Open
Abstract
Endometriosis is defined as the growth of endometrial glandular and stromal components in ectopic locations and affects as many as 10% of all women of reproductive age. Despite its high prevalence, the pathogenesis of endometriosis remains poorly understood. MicroRNAs, small non-coding RNAs that post-transcriptionally regulate gene expression, are mis-expressed in endometriosis but a functional role in the disease pathogenesis remains uncertain. To examine the role of microRNA-451 (miR-451) in the initial development of endometriosis, we utilized a novel mouse model in which eutopic endometrial fragments used to induce endometriosis were deficient for miR-451. After induction of the disease, we evaluated the impact of this deficiency on implant development and survival. Loss of miR-451 expression resulted in a lower number of ectopic lesions established in vivo. Analysis of differential protein profiles between miR-451 deficient and wild-type endometrial fragments revealed that fibrinogen alpha polypeptide isoform 2 precursor was approximately 2-fold higher in the miR-451 null donor endometrial tissue and this elevated expression of the protein was associated with altered expression of the parent fibrinogen alpha chain mRNA and protein. As this polypeptide contains RGD amino acid “cell adhesion” motifs which could impact early establishment of lesion development, we examined and confirmed using a cyclic RGD peptide antagonist, that endometrial cell adhesion and endometriosis establishment could be respectively inhibited both in vitro and in vivo. Collectively, these results suggest that the reduced miR-451 eutopic endometrial expression does not enhance initial establishment of these fragments when displaced into the peritoneal cavity, that loss of eutopic endometrial miR-451 expression is associated with altered expression of fibrinogen alpha chain mRNA and protein, and that RGD cyclic peptide antagonists inhibit establishment of endometriosis development in an experimental mouse model suggesting that this approach may prove useful in the prevention of endometriosis establishment and survival.
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Affiliation(s)
- Warren B. Nothnick
- University of Kansas Medical Center, Department of Molecular & Integrative Physiology, Kansas City, Kansas, United States of America
- * E-mail:
| | - Amanda Graham
- University of Kansas Medical Center, Department of Molecular & Integrative Physiology, Kansas City, Kansas, United States of America
| | - Joshua Holbert
- University of Kansas Medical Center, Department of Molecular & Integrative Physiology, Kansas City, Kansas, United States of America
| | - Mitchell J. Weiss
- The Children's Hospital of Philadelphia, Division of Hematology, Philadelphia, Pennsylvania, United States of America
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KOBAYASHI HIROSHI, IMANAKA SHOGO, NAKAMURA HARUKI, TSUJI AYUMI. Understanding the role of epigenomic, genomic and genetic alterations in the development of endometriosis (Review). Mol Med Rep 2014; 9:1483-505. [DOI: 10.3892/mmr.2014.2057] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 03/03/2014] [Indexed: 11/05/2022] Open
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17
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Wei L, Gao W, Ma Y, Cao Q, Zhang X. Is mitochondrial tRNACysG5821A a deleterious mutation? ACTA ACUST UNITED AC 2014; 26:202-4. [DOI: 10.3109/19401736.2014.892107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Tipirisetti NR, Govatati S, Pullari P, Malempati S, Thupurani MK, Perugu S, Guruvaiah P, K LR, Digumarti RR, Nallanchakravarthula V, Bhanoori M, Satti V. Mitochondrial control region alterations and breast cancer risk: a study in South Indian population. PLoS One 2014; 9:e85363. [PMID: 24497926 PMCID: PMC3907410 DOI: 10.1371/journal.pone.0085363] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 11/26/2013] [Indexed: 01/10/2023] Open
Abstract
Background Mitochondrial displacement loop (D-loop) is the hot spot for mitochondrial DNA (mtDNA) alterations which influence the generation of cellular reactive oxygen species (ROS). Association of D-loop alterations with breast cancer has been reported in few ethnic groups; however none of the reports were documented from Indian subcontinent. Methodology We screened the entire mitochondrial D-loop region (1124 bp) of breast cancer patients (n = 213) and controls (n = 207) of south Indian origin by PCR-sequencing analysis. Haplotype frequencies for significant loci, the standardized disequilibrium coefficient (D′) for pair-wise linkage disequilibrium (LD) were assessed by Haploview Software. Principal Findings We identified 7 novel mutations and 170 reported polymorphisms in the D-loop region of patients and/or controls. Polymorphisms were predominantly located in hypervariable region I (60%) than in II (30%) of D-loop region. The frequencies of 310‘C’ insertion (P = 0.018), T16189C (P = 0.0019) variants and 310‘C’ins/16189C (P = 0.00019) haplotype were significantly higher in cases than in controls. Furthermore, strong LD was observed between nucleotide position 310 and 16189 in controls (D′ = 0.49) as compared to patients (D′ = 0.14). Conclusions Mitochondrial D-loop alterations may constitute inherent risk factors for breast cancer development. The analysis of genetic alterations in the D-loop region might help to identify patients at high risk for bad progression, thereby helping to refine therapeutic decisions in breast cancer.
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Affiliation(s)
| | - Suresh Govatati
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Priyanka Pullari
- Department of Biotechnology, Periyar University, Salem, Tamilnadu, India
| | - Sravanthi Malempati
- Department of Biochemistry, DrMRAR PG Center, Krishna University, Nuzvid, India
| | | | - Shyam Perugu
- Department of Biochemistry, Osmania University, Hyderabad, India
| | | | - Lakshmi Rao K
- Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
| | | | | | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, India
| | - Vishnupriya Satti
- Department of Genetics, Osmania University, Hyderabad, India
- * E-mail:
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Genetic, epigenetic and stem cell alterations in endometriosis: new insights and potential therapeutic perspectives. Clin Sci (Lond) 2013; 126:123-38. [PMID: 24059589 DOI: 10.1042/cs20130099] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Human endometrium is a highly dynamic tissue, undergoing periodic growth and regression at each menstrual cycle. Endometriosis is a frequent chronic pathological status characterized by endometrial tissue with an ectopic localization, causing pelvic pain and infertility and a variable clinical presentation. In addition, there is well-established evidence that, although endometriosis is considered benign, it is associated with an increased risk of malignant transformation in approximately 1.0% of affected women, with the involvement of multiple pathways of development. Increasing evidence supports a key contribution of different stem/progenitor cell populations not only in the cyclic regeneration of eutopic endometrium, but also in the pathogenesis of at least some types of endometriosis. Evidence has arisen from experiments in animal models of disease through different kinds of assays (including clonogenicity, the label-retaining cell approach, the analysis of undifferentiation markers), as well as from descriptive studies on ectopic and eutopic tissue samples harvested from affected women. Changes in stem cell populations in endometriotic lesions are associated with genetic and epigenetic alterations, including imbalance of miRNA expression, histone and DNA modifications and chromosomal aberrations. The present short review mainly summarizes the latest observations contributing to the current knowledge regarding the presence and the potential contribution of stem/progenitor cells in eutopic endometrium and the aetiology of endometriosis, together with a report of the most recently identified genetic and epigenetic alterations in endometriosis. We also describe the potential advantages of single cell molecular profiling in endometrium and in endometriotic lesions. All these data can have clinical implications and provide a basis for new potential therapeutic applications.
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TP53 alterations and colorectal cancer predisposition in south Indian population: A case-control study. Tumour Biol 2013; 35:2303-11. [DOI: 10.1007/s13277-013-1305-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/08/2013] [Indexed: 10/26/2022] Open
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Govatati S, Kodati VL, Deenadayal M, Chakravarty B, Shivaji S, Bhanoori M. Mutations in the PTEN tumor gene and risk of endometriosis: a case-control study. Hum Reprod 2013; 29:324-36. [PMID: 24154570 DOI: 10.1093/humrep/det387] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
STUDY QUESTION Are mutations in the phosphatase and tensin homolog deleted on chromosome 10 (PTEN) gene associated with endometriosis? SUMMARY ANSWER Loss of heterozygosity (LOH) at the 10q23.3 locus, PTEN somatic mutations and changes in the levels and distribution of proteins in the PTEN-PI3K/Akt signal transduction pathway are associated with endometriosis. WHAT IS KNOWN ALREADY Endometriosis has a strong genetic basis. Recent genome-wide association and linkage studies have reported a significant association of endometriosis with 7p15.2, 9p21 and 10q23-26 loci. PTEN, which maps to 10q23.3, acts as a tumor suppressor gene through the action of its phosphatase protein product, phosphatase and tensin homolog (PTEN). This phosphatase is involved in the regulation of the cell cycle, and mutations of PTEN are a step in the development of many cancers. STUDY DESIGN, SIZE, DURATION A total of 1252 subjects of Indian origin (endometriosis patients = 752; controls = 500) were recruited to participate in this case-control study. Recruitment took place from 2001 to 2009 at Institute of Reproductive Medicine (IRM), Kolkata, India; Infertility Institute and Research Centre (IIRC), Secundrabad, India and Vasavi Medical and Research Centre, Hyderabad, India. PARTICIPANTS/MATERIALS, SETTING, METHODS LOH on 10q, 9p and 7p was analyzed in analogous ectopic-eutopic endometria along with blood samples from 32 advanced stage endometriosis patients by PCR-GeneScan analysis. Genotyping of PTEN was carried out on genomic DNA of analogous ectopic-eutopic endometria (n = 32) as well as blood samples from 720 patients and 500 controls by PCR-sequencing analysis to explore somatic and germ-line mutations, respectively. The levels and distribution of PTEN, p-Akt, p-Bad and p27 were analyzed in the eutopic endometria of patients (n = 5) and controls (n = 5) using western-blot and immunohistochemistry. MAIN RESULTS AND THE ROLE OF CHANCE PCR-GeneScan analysis revealed a higher LOH frequency at 10q23.3 (84.4%) compared with other loci analyzed, hence we focused our attention on PTEN. PCR-sequencing analysis revealed seven novel somatic mutations and 23 germ-line polymorphisms in patients. Among somatic mutations, a frame-shift insertion at 10:89692992-89692993 (in the functionally important N-terminal phosphatase domain of PTEN) occurred in 11 of the 32 ectopic endometria. Western-blot and immunohistochemical analysis revealed decreased PTEN and increased p-Akt and p-Bad levels in eutopic endometria of patients compared with controls (all comparisons, P < 0.0001). Furthermore, PTEN loss was more frequent in the nucleus than in the cytoplasm. Expression of p27 did not differ between patients and controls. LIMITATIONS, REASONS FOR CAUTION Protein analysis was performed in eutopic endometrial samples from only a small number of patients and controls. In future investigations, a larger sample size should be used and the role of the other genes involved in the PTEN-PI3K/Akt signal transduction pathway should be analyzed. WIDER IMPLICATIONS OF THE FINDINGS Our findings revealed a possible involvement of the PTEN-PI3K/Akt-Bad axis in the pathogenesis of endometriosis, which may facilitate the discovery of suitable pathway inhibitors for disease treatment. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by grants from the Science & Engineering Research Board (SERB), India (Lr No: SR/FT/LS-188/2009) to BM. The authors have no competing interests to declare.
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Affiliation(s)
- Suresh Govatati
- Department of Biochemistry, Osmania University, Hyderabad 500 007, India
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Tipirisetti NR, Lakshmi RK, Govatati S, Govatati S, Vuree S, Singh L, Raghunadha Rao D, Bhanoori M, Vishnupriya S. Mitochondrial genome variations in advanced stage breast cancer: A case–control study. Mitochondrion 2013; 13:372-8. [DOI: 10.1016/j.mito.2013.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 02/09/2013] [Accepted: 04/19/2013] [Indexed: 12/19/2022]
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Mitochondrial NADH:ubiquinone oxidoreductase alterations are associated with endometriosis. Mitochondrion 2013; 13:782-90. [PMID: 23685242 DOI: 10.1016/j.mito.2013.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 02/09/2013] [Accepted: 05/07/2013] [Indexed: 01/14/2023]
Abstract
Genetic alterations and aberrant expression of 'mitochondrial membrane complex I' (MMC-I) underlie several complex human disorders, but no reports are documented to date in endometriosis. Sequencing of mitochondrially encoded MMC-I subunits revealed 72 mutations of which 2 missense (G10398A; A13603A/G) mutations and 1 synonymous (T10400C) mutation showed higher prevalence in patients. In silico functional analysis predicted A13603A/G, a novel heteroplasmy as a 'damaging variant'. Our results indicate higher endometriosis risk for haplotype '10398A/10400C/13603AG' and haplogroup 'N'. Immunohistochemical analysis revealed elevated MMC-I expression in eutopic endometria of patients compared to controls. In conclusion, MMC-I alterations may constitute an inheritable risk factor for endometriosis.
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Tipirisetti NR, Govatati S, Govatati S, Kandukuri LR, Cingeetham A, Singh L, Digumarti RR, Bhanoori M, Satti V. Association of E-cadherin single-nucleotide polymorphisms with the increased risk of breast cancer: a study in South Indian women. Genet Test Mol Biomarkers 2013; 17:494-500. [PMID: 23551055 DOI: 10.1089/gtmb.2012.0485] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND E-cadherin (CDH1) plays an important role in intercellular adhesion, cell signaling, and cellular differentiation. Association of single-nucleotide polymorphisms (SNPs) of CDH1 has been identified in a number of epithelial malignancies; however, studies related to breast cancer are very few. AIM To investigate the association between CDH1 SNPs and breast cancer risk in south Indian women. METHODS Genotyping of CDH1 functional SNPs (-347G/GA, -160C/A, and +54C/T) was carried out on genomic DNA of blood from breast cancer patients (n=202) and controls (n=250) of south Indian origin by PCR-sequencing and PCR-restriction fragment length polymorphism techniques. Haplotype frequencies for multiple loci and the standardized disequilibrium coefficient (D') for pairwise linkage disequilibrium (LD) were assessed by Haploview Software. RESULTS The frequencies of -160A/A genotypes (p=0.038) and -160A alleles (p=0.046) were significantly higher in patients compared to controls. In addition, the frequency of the -347GA/-160A/+54C haplotype was also significantly elevated in patients (p=0.0238). Strong LD was observed between -347G/GA and +54C/T loci (D'=0.44) in patients compared to controls. CONCLUSION The CDH1 -160C/A polymorphism may constitute an inheritable risk factor for breast cancer in south Indian women.
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Salahi E, Salehi Z, Zahiri Z, Sadri S, Rad NK. Mitochondrial DNA 4977-bp deletion in endometriosis. Genes Genomics 2013. [DOI: 10.1007/s13258-013-0103-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mitochondrial displacement loop alterations are associated with endometriosis. Fertil Steril 2013; 99:1980-6.e9. [PMID: 23490167 DOI: 10.1016/j.fertnstert.2013.02.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/28/2013] [Accepted: 02/13/2013] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the association of mitochondrial displacement (D-) loop alterations with endometriosis in south Indian women. DESIGN Case-control study. SETTING Biochemistry and molecular biology laboratories. PATIENT(S) Women with (n = 152) and without (n = 150) endometriosis of south Indian origin. INTERVENTION(S) All women had a transvaginal ultrasound scan at screening followed by a laparoscopy to confirm the diagnosis (revised American Fertility Society stage III = 54; stage IV = 98). MAIN OUTCOME MEASURE(S) Genotyping of entire D-loop (1,124 bp) was carried out on genomic DNA of blood from cases and controls by polymerase chain reaction sequencing analysis. RESULT(S) Twelve novel mutations and 187 reported polymorphisms were identified in the D-loop region of cases and/or controls. The A189G, 310 C insertion, T16189C polymorphisms, and 189G/310TC/16189C haplotype have significantly higher frequency in cases compared with controls. CONCLUSION(S) Mitochondrial D-loop alterations may constitute an inheritable risk factor for endometriosis. The analysis of D-loop alterations may help to identify patients at high risk for disease outcome.
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