Before revision: In this paper, we first establish well-posedness results of McKean-Vlasov stochastic differential equations (SDEs) and related particle systems with a  drift coefficient that is discontinuous in the spatial component .
After revision: In this paper, we first establish well-posedness results for one-dimensional McKean-Vlasov stochastic differential equations (SDEs) and related particle systems with a drift coefficient that is discontinuous in the spatial component .