Caenorhabditis elegans is a valuable model to study organ, tissue, and cell-type&#
xa0;responses to external cues. However, the nematode comprises multiple syncytial tissues with spatial coordinates corresponding to distinct nuclear transcriptomes. Here, we present a single-nucleus RNA sequencing (snRNA-seq) protocol that aims to overcome difficulties encountered with single-cell RNA sequencing in C.&#
xa0;elegans. We describe steps for isolating C.&#
xa0;elegans nuclei for downstream applications including snRNA-seq applied to the context of alcohol exposure. For complete details on the use and execution of this protocol, please refer to Truong et&#
xa0;al. (2023).<sup>1</sup>.