Mitochondrial hijacking: A potential mechanism for SARS-CoV-2 to impair female fertility

Jun Sun1, Qiong Liu1, Xinling Zhang1

  • 1Medical School of Zhengzhou University, China.

Medical Hypotheses
|February 1, 2022
PubMed

Insights

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may impair female fertility by hijacking host cell mitochondria. Understanding this mitochondrial pathway is crucial for reproductive health interventions in infected women.

Area of Science:

  • Reproductive Biology
  • Virology
  • Cellular Biology

Background:

  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes multi-organ complications beyond respiratory lesions.
  • While SARS-CoV-2 is highly transmissible with low lethality, its impact on infected individuals, particularly concerning fertility, warrants investigation.
  • Existing evidence suggests viral infections can impair female reproduction, but specific mechanisms for SARS-CoV-2 remain unclear.

Purpose of the Study:

  • To elucidate the mechanisms by which SARS-CoV-2 affects female fertility.
  • To explore the role of mitochondrial hijacking by SARS-CoV-2 in female reproductive impairment.
  • To identify potential preventive measures and therapeutic targets for women with reproductive needs affected by SARS-CoV-2.

Main Methods:

  • Utilizing RNA-GPS technology to detect SARS-CoV-2 genome presence in host cell mitochondria.
  • Analyzing the impact of SARS-CoV-2 on mitochondrial function.
  • Correlating mitochondrial dysfunction with female fertility impairment.

Main Results:

  • RNA-GPS technology confirmed SARS-CoV-2 genome localization within host cell mitochondria.
  • Evidence suggests SARS-CoV-2 infection disrupts normal mitochondrial function.
  • This disruption is hypothesized to be a key pathway for SARS-CoV-2-induced female fertility issues.

Conclusions:

  • SARS-CoV-2 may impair female fertility by hijacking mitochondrial pathways.
  • Mitochondrial dysfunction is a critical factor in SARS-CoV-2-related reproductive complications.
  • Further research into this pathway can guide interventions for affected women.

Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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...
8.2K
Mitochondrial Membranes01:45

Mitochondrial Membranes

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,...
12.6K
ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased...
15.4K
Infertility in Females01:28

Infertility in Females

Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of...
1.3K
Meiosis I03:09

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
42.1K
The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
3.8K