| First Author | Kobayashi K | Year | 2023 |
| Journal | Life Sci Alliance | Volume | 6 |
| Issue | 10 | PubMed ID | 37541847 |
| Mgi Jnum | J:338938 | Mgi Id | MGI:7517594 |
| Doi | 10.26508/lsa.202301916 | Citation | Kobayashi K, et al. (2023) Feto-maternal cholesterol transport regulated by beta-Klotho-FGF15 axis is essential for fetal growth. Life Sci Alliance 6(10) |
| abstractText | beta-Klotho (beta-KL) is indispensable to regulate lipid, glucose, and energy metabolism in adult animals. beta-KL is highly expressed in the yolk sac, but its role in the developmental stages has not been established. We hypothesized that beta-KL is required for metabolic regulation in the embryo and aimed to clarify the role of beta-KL during development. Here, we show that beta-KL regulates feto-maternal cholesterol transport through the yolk sac by mediating FGF 15 signaling, and also that impairment of the beta-KL-FGF15 axis causes fetal growth restriction (FGR). Embryos of beta- kl knockout (beta-kl-/-) mice were morphologically normal but exhibited FGR before placental maturation. The body weight of beta-kl-/- mice remained lower after birth. beta-KL deletion reduced cholesterol supply from the maternal blood and led to lipid shortage in the embryos. These phenotypes were similar to those of embryos lacking FGF15, indicating that beta-KL-FGF15 axis is essential for growth and lipid regulation in the embryonic stages. Our findings suggest that lipid abnormalities in early gestation provoke FGR, leading to reduced body size in later life. |
