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Embryonic implantation in galectin 1/galectin 3 double mutant mice
C Colnot1, D Fowlis, M A Ripoche
1Unité INSERM 257, ICGM, Paris, France.
Summary
Galectin 1 and galectin 3 are not essential for embryo implantation. Even in double mutant mice lacking both galectins, implantation still occurs, suggesting other factors like galectin 5 may be involved.
Area of Science:
- Developmental Biology
- Reproductive Biology
- Molecular Genetics
Background:
- Galectin 1 and galectin 3 are expressed in early embryonic trophectoderm cells.
- These galectins have been previously implicated in embryo implantation.
- Galectin 1 null mutant mice show normal implantation, questioning their essentiality.
Purpose of the Study:
- To investigate the role of galectin 3 in mouse viability and implantation.
- To assess the combined role of galectin 1 and galectin 3 in embryo implantation.
- To identify potential alternative galectins involved in implantation.
Main Methods:
- Generation and characterization of galectin 3 null mutant mice.
- Creation of double mutant mice lacking both galectin 1 and galectin 3 (gal1-/-; gal3-/-).
- Assessment of implantation success in wild-type, single, and double mutant mice.
Main Results:
- Galectin 3 null mutant mice are viable with no apparent abnormalities.
- Implantation occurs successfully in mice lacking both galectin 1 and galectin 3.
- Galectin 5 is detected in the blastocyst during the implantation period.
Conclusions:
- Galectin 1 and galectin 3 are not strictly required for successful embryo implantation.
- The absence of both galectin 1 and galectin 3 does not prevent implantation.
- Galectin 5 emerges as a potential player in the implantation process.