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Molecular conservation of marsupial and eutherian placentation and lactation.


ABSTRACT: Eutherians are often mistakenly termed 'placental mammals', but marsupials also have a placenta to mediate early embryonic development. Lactation is necessary for both infant and fetal development in eutherians and marsupials, although marsupials have a far more complex milk repertoire that facilitates morphogenesis of developmentally immature young. In this study, we demonstrate that the anatomically simple tammar placenta expresses a dynamic molecular program that is reminiscent of eutherian placentation, including both fetal and maternal signals. Further, we provide evidence that genes facilitating fetal development and nutrient transport display convergent co-option by placental and mammary gland cell types to optimize offspring success.

SUBMITTER: Guernsey MW 

PROVIDER: S-EPMC5595433 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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Molecular conservation of marsupial and eutherian placentation and lactation.

Guernsey Michael W MW   Chuong Edward B EB   Cornelis Guillaume G   Renfree Marilyn B MB   Baker Julie C JC  

eLife 20170912


Eutherians are often mistakenly termed 'placental mammals', but marsupials also have a placenta to mediate early embryonic development. Lactation is necessary for both infant and fetal development in eutherians and marsupials, although marsupials have a far more complex milk repertoire that facilitates morphogenesis of developmentally immature young. In this study, we demonstrate that the anatomically simple tammar placenta expresses a dynamic molecular program that is reminiscent of eutherian p  ...[more]

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