On human parthenogenesis.

Area of Science:

• Reproductive biology
• Human genetics
• Developmental biology

Background:

• Spontaneous human parthenogenesis typically results in tumors like ovarian teratomas.
• Recent discoveries include chimeric human parthenotes and androgenotes, and viable bi-maternal mice.
• These findings prompt re-evaluation of undetected natural parthenogenesis in humans.

Purpose of the Study:

• To propose a hypothesis for the existence of clinically healthy human parthenotes.
• To identify key biological mechanisms that could facilitate natural human parthenogenesis.
• To suggest a method for verifying the existence of such individuals.

Main Methods:

• Hypothesis formulation based on existing biological knowledge.
• Review of spontaneous parthenogenetic and androgenetic events in humans.
• Consideration of experimental models (bi-maternal mice) and recent case findings.

Main Results:

• A hypothesis is presented suggesting that mutations in genomic imprinting, meiosis, and oocyte activation could permit healthy human parthenogenesis.
• The study posits that such individuals may have gone unnoticed due to lack of specific detection methods.
• Whole genome sequencing of newborns is proposed as a definitive method for identification.

Conclusions:

• Clinically healthy human parthenotes may exist naturally.
• Specific genetic and meiotic mutations are potential enabling factors.
• Widespread whole genome sequencing offers a pathway to test this hypothesis and explore medical implications.