Sex-biased regulatory changes in the placenta of native highlanders contribute to adaptive fetal development.
Elife
; 122024 Jun 13.
Article
em En
| MEDLINE
| ID: mdl-38869160
ABSTRACT
Compared with lowlander migrants, native Tibetans have a higher reproductive success at high altitude though the underlying mechanism remains unclear. Here, we compared the transcriptome and histology of full-term placentas between native Tibetans and Han migrants. We found that the placental trophoblast shows the largest expression divergence between Tibetans and Han, and Tibetans show decreased immune response and endoplasmic reticulum stress. Remarkably, we detected a sex-biased expression divergence, where the male-infant placentas show a greater between-population difference than the female-infant placentas. The umbilical cord plays a key role in the sex-biased expression divergence, which is associated with the higher birth weight of the male newborns of Tibetans. We also identified adaptive histological changes in the male-infant placentas of Tibetans, including larger umbilical artery wall and umbilical artery intima and media, and fewer syncytial knots. These findings provide valuable insights into the sex-biased adaptation of human populations, with significant implications for medical and genetic studies of human reproduction.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Placenta
/
Desenvolvimento Fetal
Limite:
Female
/
Humans
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Male
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Newborn
/
Pregnancy
País/Região como assunto:
Asia
Idioma:
En
Revista:
Elife
Ano de publicação:
2024
Tipo de documento:
Article