Yes, we are talking mice, earthworms, and petri dishes. But this substance is available as a chinese herbal compound called Thunder of God vine. Seems to have anti-tumor, immuno-suppressant properties, used for cancer, rheumatoid arthritis. Under investigation for PD and Alzheimer's.

I wouldn't take it unless under the care of a TCM doctor.

Relevant articles I found:

Cell, 2008: Proteostatis Regulators and Pharmocologic Chaperones Synergize to Correct Protein Misfolding Diseases.

Journal of Neuroinflammation, 2010: Reduction of β-amyloid pathology by celastrol in a transgenic mouse model of Alzheimer's disease

Best,
wordsmithy