Mitochondrial Replacement Therapy

  • It is also called Mitochondrial Gene Therapy
  • MRT or Mitochondrial donation is a medical technique in which defective mitochondria carried by a woman is replaced with the healthy mitochondria of a donor.
  • Through invitro fertilization technique (IVF), the egg is then fertilised with the partner’s sperm. Thus the embryo remains free from any such defects.
  • The two most common techniques in mitochondrial donation are maternal spindle transfer and pronuclear transfer.
  • Thus this medical technique prevents the transmission of mitochondrial (genetic) disease from one generation to the next.
  • MRT proposes to give parents chance of having a child that is over 99% genetically matched to them and most importantly free of the mitochondrial disease
  • Benefits:
    • It will prevent transmission of mitochondrial (genetic) disease from one generation to the next.
    • It will give parents chance of having a child that is over 99% genetically matched to them and most importantly free of the mitochondrial disease.
    • It has no impact on personality or looks of the offspring from third DNA set, as surrogate mitochondrial DNA is separate from core DNA in cells.
  • Why in news?
    • First three parent child was born via this technique in Mexico
    • UK became first country in world to legalise MGT

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