Neurotransmitter Receptor Analysis in Transgenic Mouse Models
One of the characteristic findings in human Huntington’s disease (HD) is the alteration of neurotransmitter receptors. To a remarkable degree, transgenic HD mouse models recapitulate neurotransmitter receptor alterations. Neurotransmitter receptors can be assessed at the protein level by using receptor-binding autoradiography. One can also measure levels of receptor messenger RNA with in situ hybridization (ISH), employing either oligonucleotide or ribonucleotide probes. Both of these techniques—receptor-binding autoradiography and in situ hybridization—yield quantitative and regionally specific information regarding neurotransmitter receptors. We describe techniques for performing receptor-binding autoradiography and two types of in situ hybridization using oligonucleotide and ribonucleotide probes. With receptor binding and ISH, one can obtain quantitative region-specific assessments of neurotransmitter receptor alteration, a key pathologic event in HD pathogenesis.
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