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Ibrahim AH, Rahman NNA, Saifuddeen SM. Mitochondrial Replacement Therapy: An Islamic Perspective. JOURNAL OF BIOETHICAL INQUIRY 2023; 20:485-495. [PMID: 37440155 DOI: 10.1007/s11673-023-10279-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 01/19/2023] [Indexed: 07/14/2023]
Abstract
Mitochondrial replacement technology (MRT) is an emerging and complex bioethical issue. This treatment aims to eliminate maternal inherited mitochondrial DNA (mtDNA) disorders. For Muslims, its introduction affects every aspect of human life, especially the five essential interests of human beings-namely, religion, life, lineage, intellect, and property. Thus, this technology must be assessed using a comprehensive and holistic approach addressing these human essential interests. Consequently, this article analyses and assesses tri-parent baby technology from the perspective of Maqasidic bioethics-that is, Islamic bioethics based on the framework of Maqasid al-Shariah. Using this analysis, this article suggests that tri-parent baby technology should not be permitted for Muslims due to the existence of third-party cell gametes which lead to lineage mixing and due to the uncertain safety of the therapy itself and because the major aim of the technology is to fulfil the affected couples interest to conceive their own genetically healthy child, not to treat and cure mtDNA disorders sufferers.
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Affiliation(s)
- Abdul Halim Ibrahim
- Programme of Applied Science with Islamic Studies, Academy of Islamic Studies, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Noor Naemah Abdul Rahman
- Department of Fiqh and Usul, Academy of Islamic Studies, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Shaikh Mohd Saifuddeen
- Centre for Science and Environment Studies, Institute of Islamic Understanding Malaysia, 2 Langgak Tunku Off Jalan Tuanku Abdul Halim, 50480, Kuala Lumpur, Malaysia
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Hamblin MR. Mitochondrial Transplantation: Could Photobiomodulation Play a Role? Photobiomodul Photomed Laser Surg 2023; 41:91-92. [PMID: 36827344 DOI: 10.1089/photob.2023.0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Affiliation(s)
- Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg-Doornfontein Campus, Doornfontein, South Africa
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Kang MH, Kim YJ, Lee JH. Mitochondria in reproduction. Clin Exp Reprod Med 2023; 50:1-11. [PMID: 36935406 PMCID: PMC10030209 DOI: 10.5653/cerm.2022.05659] [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: 09/11/2022] [Accepted: 12/06/2022] [Indexed: 02/11/2023] Open
Abstract
In reproduction, mitochondria produce bioenergy, help to synthesize biomolecules, and support the ovaries, oogenesis, and preimplantation embryos, thereby facilitating healthy live births. However, the regulatory mechanism of mitochondria in oocytes and embryos during oogenesis and embryo development has not been clearly elucidated. The functional activity of mitochondria is crucial for determining the quality of oocytes and embryos; therefore, the underlying mechanism must be better understood. In this review, we summarize the specific role of mitochondria in reproduction in oocytes and embryos. We also briefly discuss the recovery of mitochondrial function in gametes and zygotes. First, we introduce the general characteristics of mitochondria in cells, including their roles in adenosine triphosphate and reactive oxygen species production, calcium homeostasis, and programmed cell death. Second, we present the unique characteristics of mitochondria in female reproduction, covering the bottleneck theory, mitochondrial shape, and mitochondrial metabolic pathways during oogenesis and preimplantation embryo development. Mitochondrial dysfunction is associated with ovarian aging, a diminished ovarian reserve, a poor ovarian response, and several reproduction problems in gametes and zygotes, such as aneuploidy and genetic disorders. Finally, we briefly describe which factors are involved in mitochondrial dysfunction and how mitochondrial function can be recovered in reproduction. We hope to provide a new viewpoint regarding factors that can overcome mitochondrial dysfunction in the field of reproductive medicine.
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Affiliation(s)
- Min-Hee Kang
- CHA Fertility Center Seoul Station, Seoul, Republic of Korea
- Department of Biomedical Science, College of Life Science, CHA University, Pocheon, Republic of Korea
| | - Yu Jin Kim
- CHA Fertility Center Seoul Station, Seoul, Republic of Korea
| | - Jae Ho Lee
- CHA Fertility Center Seoul Station, Seoul, Republic of Korea
- Department of Biomedical Science, College of Life Science, CHA University, Pocheon, Republic of Korea
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Geng J, Wang J, Wang H. Emerging Landscape of Cell-Penetrating Peptide-Mediated Organelle Restoration and Replacement. ACS Pharmacol Transl Sci 2023; 6:229-244. [PMID: 36798470 PMCID: PMC9926530 DOI: 10.1021/acsptsci.2c00229] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Indexed: 01/18/2023]
Abstract
Organelles are specialized subunits within a cell membrane that perform specific roles or functions, and their dysfunction can lead to a variety of pathophysiologies including developmental defects, aging, and diseases (cancer, cardiovascular and neurodegenerative diseases). Recent studies have shown that cell-penetrating peptide (CPP)-based pharmacological therapies delivered to organelles or even directly resulting in organelle replacement can restore cell function and improve or prevent disease. In this review, we summarized the current developments in the precise delivery of exogenous cargoes via CPPs at the organelle level, CPP-mediated organelle delivery, and discuss their feasibility as next-generation targeting strategies for the diagnosis and treatment of diseases at the organelle level.
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Affiliation(s)
- Jingping Geng
- Department
of Microbiology and Immunology, Medical School, China Three Gorges University, Yichang443002, China
- Interdisciplinary
Laboratory of Molecular Biology and Biophysics, Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097Warszawa, Poland
| | - Jing Wang
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland21215, United States
| | - Hu Wang
- Department
of Microbiology and Immunology, Medical School, China Three Gorges University, Yichang443002, China
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland21215, United States
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Ultrastructural Evaluation of the Human Oocyte at the Germinal Vesicle Stage during the Application of Assisted Reproductive Technologies. Cells 2022; 11:cells11101636. [PMID: 35626673 PMCID: PMC9139706 DOI: 10.3390/cells11101636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/06/2022] [Accepted: 05/12/2022] [Indexed: 12/04/2022] Open
Abstract
After its discovery in 1825 by the physiologist J.E. Purkinje, the human germinal vesicle (GV) attracted the interest of scientists. Discarded after laparotomy or laparoscopic ovum pick up from the pool of retrieved mature oocytes, the leftover GV was mainly used for research purposes. After the discovery of Assisted Reproductive Technologies (ARTs) such as in vitro maturation (IVM), in vitro fertilization and embryo transfer (IVF-ET) and intracytoplasmic sperm injection (ICSI), its developing potential was explored, and recognized as an important source of germ cells, especially in the case of scarce availability of mature oocytes for pathological/clinical conditions or in the case of previous recurrent implantation failure. We here review the ultrastructural data available on GV-stage human oocytes and their application to ARTs.
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Gamboa-Bernal GA. La técnica CRISPR-Cas9 unos años después. PERSONA Y BIOÉTICA 2022. [DOI: 10.5294/pebi.2021.25.2.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
En 2016 se hizo pública una nueva técnica para editar genes: la CRISPR-Cas9. Cinco años después es posible dar una mirada que desde la Bioética examine el desarrollo de esta biotecnología. Es constatable que la técnica de edición de genes en la línea somáticas se ha difundido y está empezando a mostrar algunos resultados. Sin embargo, a pesar de ellos no es posible extender ese trabajo a las líneas germinales a través de la edición hereditaria del genoma humano. Se estudian dos documentos, el informe de la Comisión Internacional para el Uso Clínico de la Edición del Genoma Humano (2020) y el informe de recomendaciones del Comité Asesor de Expertos en el Desarrollo de Estándares Globales para la Gobernanza y Supervisión de la Edición del Genoma Humano de la Organización Mundial de la Salud (2021) y se reflexiona sobre su contenido y sus consecuencias.
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Fan HC, Lee HF, Yue CT, Chi CS. Clinical Characteristics of Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-Like Episodes. Life (Basel) 2021; 11:life11111111. [PMID: 34832987 PMCID: PMC8617702 DOI: 10.3390/life11111111] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/11/2021] [Accepted: 10/16/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome, a maternally inherited mitochondrial disorder, is characterized by its genetic, biochemical and clinical complexity. The most common mutation associated with MELAS syndrome is the mtDNA A3243G mutation in the MT-TL1 gene encoding the mitochondrial tRNA-leu(UUR), which results in impaired mitochondrial translation and protein synthesis involving the mitochondrial electron transport chain complex subunits, leading to impaired mitochondrial energy production. Angiopathy, either alone or in combination with nitric oxide (NO) deficiency, further contributes to multi-organ involvement in MELAS syndrome. Management for MELAS syndrome is amostly symptomatic multidisciplinary approach. In this article, we review the clinical presentations, pathogenic mechanisms and options for management of MELAS syndrome.
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Affiliation(s)
- Hueng-Chuen Fan
- Department of Pediatrics, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan; (H.-C.F.); (C.-T.Y.)
- Department of Medical Research, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan
- Department of Rehabilitation, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli 356, Taiwan
- Department of Life Sciences, Agricultural Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
| | - Hsiu-Fen Lee
- Department of Pediatrics, Taichung Veterans General Hospital, Taichung 407, Taiwan;
| | - Chen-Tang Yue
- Department of Pediatrics, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan; (H.-C.F.); (C.-T.Y.)
| | - Ching-Shiang Chi
- Department of Pediatrics, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan; (H.-C.F.); (C.-T.Y.)
- Correspondence: ; Tel.: +886-4-26581919-4301
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Rodríguez-Varela C, Herraiz S, Labarta E. Mitochondrial enrichment in infertile patients: a review of different mitochondrial replacement therapies. Ther Adv Reprod Health 2021; 15:26334941211023544. [PMID: 34263171 PMCID: PMC8243099 DOI: 10.1177/26334941211023544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/07/2021] [Indexed: 01/23/2023] Open
Abstract
Poor ovarian responders exhibit a quantitative reduction in their follicular
pool, and most cases are also associated with poor oocyte quality due to
patient’s age, which leads to impaired in vitro fertilisation
outcomes. In particular, poor oocyte quality has been related to mitochondrial
dysfunction and/or low mitochondrial count as these organelles are crucial in
many essential oocyte processes. Therefore, mitochondrial enrichment has been
proposed as a potential therapy option in infertile patients to improve oocyte
quality and subsequent in vitro fertilisation outcomes.
Nowadays, different options are available for mitochondrial enrichment
treatments that are encompassed in two main approaches: heterologous and
autologous. In the heterologous approach, mitochondria come from an external
source, which is an oocyte donor. These techniques include transferring either a
portion of the donor’s oocyte cytoplasm to the recipient oocyte or nuclear
material from the patient to the donor’s oocyte. In any case, this approach
entails many ethical and safety concerns that mainly arise from the uncertain
degree of mitochondrial heteroplasmy deriving from it. Thus the autologous
approach is considered a suitable potential tool to improve oocyte quality by
overcoming the heteroplasmy issue. Autologous mitochondrial transfer, however,
has not yielded as many beneficial outcomes as initially expected. Proposed
mitochondrial autologous sources include immature oocytes, granulosa cells,
germline stem cells, and adipose-derived stem cells. Presently, it would seem
that these autologous techniques do not improve clinical outcomes in human
infertile patients. However, further trials still need to be performed to
confirm these results. Besides these two main categories, new strategies have
arisen for oocyte rejuvenation by improving patient’s own mitochondrial function
and avoiding the unknown consequences of third-party genetic material. This is
the case of antioxidants, which may enhance mitochondrial activity by
counteracting and/or preventing oxidative stress damage. Among others,
coenzyme-Q10 and melatonin have shown promising results in low-prognosis
infertile patients, although further randomised clinical trials are still
necessary.
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Affiliation(s)
| | | | - Elena Labarta
- IVI Foundation – IIS La Fe, Valencia, Spain;
IVIRMA Valencia, Valencia, Spain
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Lycopene Improves In Vitro Development of Porcine Embryos by Reducing Oxidative Stress and Apoptosis. Antioxidants (Basel) 2021; 10:antiox10020230. [PMID: 33546473 PMCID: PMC7913612 DOI: 10.3390/antiox10020230] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 01/29/2021] [Accepted: 01/29/2021] [Indexed: 12/11/2022] Open
Abstract
In vitro culture (IVC) for porcine embryo development is inferior compared to in vivo development because oxidative stress can be induced by the production of excessive reactive oxygen species (ROS) under high oxygen tension in the in vitro environment. To overcome this problem, we investigated the effect of lycopene, an antioxidant carotenoid, on developmental competence and the mechanisms involved in mitochondria-dependent apoptosis pathways in porcine embryos. In vitro fertilized (IVF) embryos were cultured in IVC medium supplemented with 0, 0.02, 0.05, 0.1, or 0.2 μM lycopene. The results indicate that 0.1 μM lycopene significantly increased the rate of blastocyst formation and the total cell numbers, including trophectoderm cell numbers, on Day In terms of mitochondria-dependent apoptosis, IVF embryos treated with 0.1 μM lycopene exhibited significantly decreased levels of ROS, increased mitochondrial membrane potential, and decreased expression of cytochrome c on Days 2 and Furthermore, 0.1 μM lycopene significantly decreased the number and percentage of caspase 3-positive and apoptotic cells in Day-6 blastocysts. In addition, Day-2 embryos and Day-6 blastocysts treated with 0.1 μM lycopene showed significantly reduced mRNA expression related to antioxidant enzymes (SOD1, SOD2, CATALASE) and apoptosis (BAX/BCL2L1 ratio). These results indicate that lycopene supplementation during the entire period of IVC enhanced embryonic development in pigs by regulating oxidative stress and mitochondria-dependent apoptosis.
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