Increased Anxiety and Impaired Pain Response in Puromycin-Sensitive Aminopeptidase Gene-Deficient Mice Obtained by a Mouse Gene-Trap Method
Journal of NeurosciencePublished 15 July 1999Open access
Tomoharu Osada, Shiro Ikegami, Keiko Takiguchi‐Hayashi, Yukiko Yamazaki, Yûkô Fukui, Toru Higashinakagawa
Citations76
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TL;DR
Results suggest that the Psa gene is required for normal growth and the behavior associated with anxiety and pain, and that the function of Psa is disrupted in homozygous mice.
Abstract
A mouse mutation, termed goku, was generated by a gene-trap strategy. goku homozygous mice showed dwarfism, a marked increase in anxiety, and an analgesic effect. Molecular analysis indicated that the mutated gene encodes a puromycin-sensitive aminopeptidase (Psa; EC 3. 4.11.14), whose functions in vivo are unknown. Transcriptional arrest of the Psa gene and a drastic decrease of aminopeptidase activity indicated that the function of Psa is disrupted in homozygous mice. Together with the finding that the Psa gene is strongly expressed in the brain, especially in the striatum and hippocampus, these results suggest that the Psa gene is required for normal growth and the behavior associated with anxiety and pain.
Keywords
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