Provided herein are screening methods that utilize transgenic nematodes exposed to heat shock conditions, such as agents that increase stability of F-actin. The transgenic nematodes used can be in a wild-type background, functionally deleted for OSG-1, or express human ARHGEF10 in an OSG-1 background. Such transgenic nematodes also express a fluorescent protein, such as GFP. Such methods are in some examples high throughput and automated. Also provided are recombinant nematodes and kits that can be used with such methods.