Beeswax rubbed on the edge of the doors should help. But it all comes down to being smart when building. Any sliding action should involve 2 different woods. Usually in drawer applications the drawer sides are made from a softer wood such as poplar or pine and the frames they slide on are oak or maple. This helps prevent the sticking caused by fibres lifting and jamming and also reduces the amount of wear.
A somewhat difficult remedy might be to install some short pieces of UHMW plastic on the bottom corners of the doors. They should protrude slightly above the bottom and front and back surfaces but still fit in the grooves in the carcass of the cupboard.