What question did this study set out to answer?

Determine the functional consequences of microcephaly-associated Aspm mutations in mice and evaluate whether a human ASPM transgene can rescue observed phenotypes.

September 7, 2010Proceedings of the National Academy of SciencesOpen Access

Mutations in mouse Aspm (abnormal spindle-like microcephaly associated) cause not only microcephaly but also major defects in the germline

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Determine the functional consequences of microcephaly-associated Aspm mutations in mice and evaluate whether a human ASPM transgene can rescue observed phenotypes.
Generated mutant mice expressing truncated Aspm proteins modeled after human primary microcephaly variants.
Assessed Aspm localization during M-phase alongside brain development, fertility, and gonadal histology.
Introduced a human ASPM transgene into mutant mice to test for functional phenotypic rescue.
Truncated Aspm failed to localize to the midbody during M-phase and produced mild microcephaly in mutant mice.
Mutant mice exhibited massive germ cell loss, resulting in significantly reduced testis and ovary sizes and impaired fertility.
Transgenic expression of human ASPM fully rescued both the microcephaly and germline phenotypes without causing a gain of function.

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Implication

Murine genetic study demonstrates that Aspm mutations cause microcephaly and severe germline defects in mice, indicating evolutionary selection may involve reproductive functions.

Cite This Study

Pulvers et al. (2010) studied this question.

synapsesocial.com/papers/6a72c178fe4101aa97e0eddd https://doi.org/10.1073/pnas.1010494107

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Implication

Murine genetic study demonstrates that Aspm mutations cause microcephaly and severe germline defects in mice, indicating evolutionary selection may involve reproductive functions.

Mutations in mouse Aspm (abnormal spindle-like microcephaly associated) cause not only microcephaly but also major defects in the germline

Key Points

Discussion

Implication

Cite This Study

Mutations in mouse Aspm (abnormal spindle-like microcephaly associated) cause not only microcephaly but also major defects in the germline

Key Points

Discussion

Implication

Cite This Study

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