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Updated: Jul 17, 2026
Derivation of Mouse Trophoblast Stem Cells from Blastocysts
Published on: June 8, 2010
Trophoblast stem cells rescue placental defect in SOCS3-deficient mice
Yutaka Takahashi1, Massimo Dominici, John Swift
1Howard Hughes Medical Institute, Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. takahash@med.kobe-u.ac.jp
Abstract:
Stem cells have important clinical and experimental potentials. Trophoblast stem (TS) cells possess the ability to differentiate into trophoblast subtypes in vitro and contribute to the trophoblast lineage in vivo. Suppressor of cytokine signaling 3 (SOCS3) is a negative regulator of cytokine signaling. Targeted disruption of SOCS3 revealed embryonic lethality on E12.5; it was caused by placental defect with enhanced leukemia inhibitory factor receptor signaling. A complementation of the wild-type (WT) placenta by using tetraploid rescue technique showed that the embryonic lethality in SOCS3-deficient embryo was due to the placental defect. Here we demonstrate that TS cells supplementation rescues placental defect in SOCS3-deficient embryos. In the rescued placenta, TS cells were integrated into the placental structure, and a substantial structural improvement was observed in the labyrinthine layer that was disrupted in the SOCS3-deficient placenta. Importantly, by supplying TS cells, living SOCS3-deficient embryos were detected at term. These results indicate a functional contribution of TS cells in the placenta and their potential application.
Insights
Trophoblast stem (TS) cells can rescue placental defects in mice lacking Suppressor of cytokine signaling 3 (SOCS3). Supplementation with TS cells enabled SOCS3-deficient embryos to survive to term, highlighting their therapeutic potential.
Area of Science:
- Developmental biology
- Stem cell research
- Genetics
Background:
- Stem cells have significant clinical and experimental potential.
- Trophoblast stem (TS) cells differentiate into trophoblast subtypes and contribute to the trophoblast lineage.
- Suppressor of cytokine signaling 3 (SOCS3) negatively regulates cytokine signaling.
Purpose of the Study:
- To investigate the potential of TS cells in rescuing placental defects.
- To determine the functional contribution of TS cells in placental development.
- To explore therapeutic applications of TS cells.
Main Methods:
- Targeted disruption of SOCS3 in mice leading to embryonic lethality.
- Tetraploid rescue technique to confirm placental defect as the cause of lethality.
- Supplementation of SOCS3-deficient embryos with TS cells.
Main Results:
- SOCS3-deficient embryos exhibit placental defects and embryonic lethality by E12.5.
- TS cell supplementation rescued the placental defect in SOCS3-deficient embryos.
- Rescued placentas showed improved structure, particularly in the labyrinthine layer.
- SOCS3-deficient embryos supplemented with TS cells survived to term.
Conclusions:
- TS cells can functionally contribute to placental development and rescue developmental defects.
- TS cell supplementation offers a potential therapeutic strategy for placental insufficiency.
- This study highlights the importance of SOCS3 in placental development and cytokine signaling regulation.
