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Related Concept Videos

Mitochondria01:37

Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Animal Mitochondrial Genetics02:59

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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Non-nuclear Inheritance01:29

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Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
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Peroxisomes and mitochondria are two important oxygen-utilizing organelles in eukaryotic cells. Mitochondria carry out cellular respiration—the process that converts energy from food into ATP. Peroxisomes carry out a variety of functions, primarily breaking down different substances, such as fatty acids.
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Mitochondrial Membranes01:45

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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
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Related Experiment Video

Updated: Aug 6, 2025

Studying Mitochondrial Structure and Function in Drosophila Ovaries
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Mitochondria in reproduction.

Min-Hee Kang1,2, Yu Jin Kim1, Jae Ho Lee1,2

  • 1CHA Fertility Center Seoul Station, Seoul, Republic of Korea.

Clinical and Experimental Reproductive Medicine
|March 20, 2023
PubMed
Summary
This summary is machine-generated.

Mitochondria are vital for reproductive success, supporting oocytes and embryos. Understanding their function and dysfunction is key to improving fertility treatments and overcoming reproductive challenges.

Keywords:
DysfunctionMechanismMitochondriaRecoveryReproduction

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Area of Science:

  • Reproductive Biology
  • Cellular Biology
  • Mitochondrial Function

Background:

  • Mitochondria are essential for cellular energy production, calcium homeostasis, and programmed cell death.
  • Their specific roles in female reproduction, including oogenesis and early embryo development, are critical but not fully understood.
  • Mitochondrial dysfunction is linked to various reproductive issues, including ovarian aging and genetic disorders.

Purpose of the Study:

  • To review the specific roles of mitochondria in oocytes and embryos during reproduction.
  • To elucidate the regulatory mechanisms governing mitochondrial function in female gametes and zygotes.
  • To discuss factors contributing to mitochondrial dysfunction and potential recovery strategies in reproductive medicine.

Main Methods:

  • Literature review summarizing current research on mitochondrial roles in reproduction.
  • Analysis of mitochondrial characteristics unique to female reproduction, such as the bottleneck theory and metabolic pathways.
  • Discussion of factors causing mitochondrial dysfunction and methods for its recovery.

Main Results:

  • Mitochondria provide bioenergy, synthesize biomolecules, and support ovarian function, oogenesis, and preimplantation embryos.
  • Unique mitochondrial features in female reproduction include specific shape, metabolic pathways, and the bottleneck effect.
  • Mitochondrial dysfunction is associated with diminished ovarian reserve, aneuploidy, and other reproductive problems.

Conclusions:

  • Understanding mitochondrial mechanisms is crucial for improving oocyte and embryo quality.
  • Addressing mitochondrial dysfunction offers a potential avenue for enhancing reproductive medicine outcomes.
  • Further research into factors influencing mitochondrial function can lead to novel therapeutic strategies.