PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
23201341-5	2013	In contrast, when untransfected SH-SY5Y cells were exposed to nicotine, the levels of both alpha3 nAChR mRNA and protein were enhanced; while the levels of BACE1 mRNA and protein were diminished and the corresponding levels of BACE2 enhanced; and the level of Abeta in the culture medium was attenuated.	Nicotine	62-70	beta-secretase 2	Homo sapiens	227-232