HDAC6 and neurodegenerative disease: HDAC6 is closely related to multiple diseases involved in malignant tumors (Li et al. 2018), pathogen infection (Zhang et al. 2016), cardiovascular and metabolic diseases (Bagchi and Weeks 2019), neurodegenerative diseases and pathological autoimmune responses (Simões-Pires et al. 2013) by regulating the acetylation of nonhistone proteins (Seidel et al. 2015).