Expression pattern of mUBPy in the brain and sensory organs of mouse during embryonic development

Brain Research
Marta d'AmoraMauro Vallarino

Abstract

Mouse UBPy (mUBPy) belongs to the family of ubiquitin-specific processing proteases (UBPs). In this study we have investigated the expression of mUBPy in the brain and sensory organs of mouse at different embryonic stages (E9, E11, E13, E15, E17, E19) and during the postnatal stages P0, P1, P2, P4 and P5 using Western blot and immunohistochemistry. mUBPy-immunoreactive cell bodies first appeared at stage E11 in several brain regions, particularly in the walls surrounding the vesicles and the ventricles. Subsequently, at stage E13, new mUBPy-positive cells appeared in the corpus striatum, the caudate nucleus, the thalamus, the epithalamus, the hypothalamus and the pons. At E15 the mUBPy pattern was very similar to that observed at E13, whereas at stage E17 mUBPy-immunoreactivity significantly decreased and a high number of mUBPy-immunoreactive cells was found only to line the third ventricle and within the mantle layer of the fourth ventricle. At E19 and P0, no mUBPy-immunoreactive element was found in the brain. At the postnatal stages P2 and P5, mUBPy-positive cells were detected in all subdivisions of the brain, with high concentrations in several cortex regions. Double labeling with the mUBPy antiserum and antisera against s...Continue Reading

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