Hypothetical TRPC4- / TRPC6-mediated signaling pathway downstream of TGF-β1 in
InMyoFib cells. TRPC6 interacted directly with α-SMA, N-cadherin, activating its
expression, and indirectly supported α-SMA, N-cadherin expression by downregulating
the negative regulators COL1A1, IL-10, and IL-11. The TRPC6 channel negatively
regulates COL1A1, IL-10, and IL-11 expression, as well as Smad-2, ERK, and p38-MAPK
phosphorylation in intestinal myofibroblasts. AKT signal transduction may involve
TRPC6 upregulation downstream of the TGF-β1 receptors.