Journal: BioMed Research International
Article Title: Full-Length TrkB Variant in NSCLC Is Associated with Brain Metastasis
doi: 10.1155/2020/4193541
Figure Lengend Snippet: Immunohistochemical detection of TrkB and BDNF protein expression in sections of primitive ADKs of the lung with (Group 1) or without (Group 2) brain metastasis. The histograms summarize the results obtained. A statistically significant increase of TrkB protein expression was observed in samples from primitive ADK in Group 1 compared with Group 2. The BDNF protein expression was higher in Group 2 in comparison with Group 1. Notice the anatomical localization of BDNF and TrkB protein expression in ADK cell. BDNF antibodies generated a prevalent nuclear dark brown immunoreaction. The TrkB antibody generated a cytoplasmic and cell membrane immunoreaction. A clear and specific TrkB and BDNF immunostaining was documented in ADKs cells in both primitive and brain metastasis in Group 1. Contrarily, in Group 2, a strong and specific BDNF immunostaining was documented in brain metastasis, but not for TrkB. The data are the mean + SD of different experiments performed in triplicate. ×20 ∗ p < 0.0177.
Article Snippet: Histological sections fixed in formalin and included in paraffin were immunostained with the following antibodies: rabbit anti-human TrkB antibody (sc-12 rabbit polyclonal affinity purified antibody raised against a peptide mapping within the C-terminal cytoplasmic domain of TrkB of mouse origin, Santa Cruz Biotechnology, Dallas, Texas USA) dilution 1 : 500; rabbit anti-human -BDNF polyclonal antibody (H20, sc-548; epitope mapping at the N-terminus of the mature chain of mature NGF of human origin, Santa Cruz Biotechnology, Dallas, Texas USA) dilution 1 : 1000 dilution.
Techniques: Immunohistochemical staining, Expressing, Comparison, Generated, Membrane, Immunostaining