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Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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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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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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An In Vitro Approach to Study Mitochondrial Dysfunction: A Cybrid Model
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Mitochondrial Diseases: A Diagnostic Revolution.

Katherine R Schon1, Thiloka Ratnaike2, Jelle van den Ameele1

  • 1Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK; Medical Research Council (MRC) Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.

Trends in Genetics : TIG
|July 18, 2020
PubMed
Summary

Whole-genome sequencing (WGS) aids in diagnosing inherited mitochondrial disorders by analyzing nuclear and mitochondrial DNA (mtDNA). While WGS improves diagnosis, new challenges in molecular characterization are emerging.

Keywords:
genetic diagnosismitochondrial diseasemolecular diagnosticsmtDNA mutationwhole-genome sequencing

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Area of Science:

  • Genetics
  • Molecular Biology
  • Clinical Medicine

Background:

  • Mitochondrial disorders are common inherited diseases.
  • Clinical diagnosis and molecular characterization are traditionally challenging.
  • Advancements in sequencing technology are transforming the field.

Purpose of the Study:

  • To review recent discoveries in diagnosing and characterizing mitochondrial disorders.
  • To highlight the impact of whole-genome sequencing (WGS) on molecular diagnostics.
  • To identify emerging challenges and future research directions.

Main Methods:

  • Review of recent scientific literature on mitochondrial disorders.
  • Focus on the application of whole-genome sequencing (WGS).
  • Analysis of combined nuclear and mitochondrial DNA (mtDNA) sequencing data.

Main Results:

  • Whole-genome sequencing (WGS) enables rapid diagnosis for most patients.
  • Combined analysis of nuclear and mitochondrial DNA (mtDNA) is crucial.
  • New challenges in comprehensive molecular characterization have arisen.

Conclusions:

  • Whole-genome sequencing (WGS) has revolutionized the diagnosis of mitochondrial disorders.
  • Further research is needed to address emerging molecular characterization challenges.
  • Recent discoveries offer significant benefits for patients and families.