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Fig. 8. Genetic models of mouse female infertility because of blockage of early
embryonic development. The left column specifies the stage of development
along the oviduct. The right column lists the genes associated with blockage
at each stage. The zona pelucida protein Zp3 has been implicated in impaired
fertilization (Liu et al.,
1996; Rankin et al.,
1996). Disruption of Npm2
(Burns et al., 2003),
Zar1 (Wu et al.,
2003) and Hsf1
(Christians et al., 2000)
impedes the first cleavage step. Blockage at the two-cell stage is observed
with disruption of Zfp36l2 (
N-Zfp36l2) and
MATER (Tong et al.,
2000).