Ancient mean curvature flows from minimal hypersurfaces

For $n\ge 2$, we construct $I$-dimensional family of embedded ancient solutions to mean curvature flow arise from an unstable minimal hypersurface $\mathrm{\Sigma }$ with finite total curvature in ${\mathbb{R}}^{n+1}$, where $I$ is the Morse index of the Jacobi operator on $\mathrm{\Sigma }$.