Flow-induced [Ca2+]i change in HEK293 cells expressing 1 TRP isoform (TRPV4, TRPC1, or TRPP2) or coexpressing 2 TRPs. A) Representative traces showing a flow-induced [Ca2+]i change in HEK293 cells that expressed TRPV4, TRPC1, or TRPP2. B) Summary showing the maximum increase in flow-induced [Ca2+]i response. Cells expressed TRPV4, TRPC1, or TRPP2 or coexpressed 2 TRPs. All cells were bathed in NPSS containing 1% BSA. Means ± se (n=7–9 transfection experiments, ∼40 cells/experiment). *P < 0.01 vs. vector.