Figure 7.

Blocking the tissue inhibitor of metalloproteinase type 1 (TIMP-1) in MSC-CM reduced its pro-oligodendroglial activity on cultured aNSCs. Representative immunocytochemical staining of 2′,3′-cyclic-nucleotide 3′-phosphodiesterase (CNPase)- (A) and GFAP-positive (B) cells treated either with control (no antibody), anti-TIMP-1, or immunoglobulin G (IgG) control pre-incubated with α-MEM or MSC-CM after 3 days in culture. (C) Quantification of CNPase- and GFAP-positive (D) cell numbers. Number of experiments n = 4. Statistical significance was calculated using a two-way ANOVA with Bonferroni posttest: * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001.