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Additionally , we focused our attention on tumor cells and report that ( i ) IDE is overexpressed in vivo in tumors of the central nervous system ( CNS ) ; ( ii ) IDE - silencing inhibits neuroblastoma ( SHSY5Y ) cell proliferation and triggers cell death ; ( iii ) IDE inhibition is accompanied by a decrease of the poly - ubiquitinated protein content and co - immunoprecipitates with proteasome and ubiquitin in SHSY5Y cells .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None