A. Immunohistochemistry staining of pancreatic tissue from
human PDAC patients shows increased expression in the cancerous ducts of
mechanoresponsive proteins nonmuscle myosin IIA and IIC, α-actinin 4, and
both filamin A and B. Scale bar = 100 μm. For each sample – normal
duct (N), cancerous duct (C), and metastatic lesion
(L) – the same site is shown across all seven antibodies
stained. In addition, both the normal and cancerous ducts are from the same
patient. B. Quantification of staining intensity and surface area
across 20 patients illustrate an up-regulation of mechanoresponsive proteins, as
well as filamin A. Data are plotted as a histogram of the intensity average per
patient (described in Fig.
S1A and Materials and Methods)
across the study group.