The Russian Orthodox philosopher Fyodorov proposed that mankind could cooperate with God in the work of the general resurrection through advances in medical technology- very similar to transhumanist fantasies but without the atheistic element.
That said, I think the question kind of misses what resurrection and immortality really are. Extending life, even indefinitely, through such technological means is really a prolongation and mitigation of corruption. The resurrection is something wholly different- the abolition of corruption. In Christ it was not accomplished by technological means but by the profound humility of Christ and the power of God. The body of the resurrection is not simply an augmented body as we have now, but is in quite a different state.
The appropriateness of particular technologies and medical interventions is something to be discussed, but it seems to me that the equation of such methods with the resurrection, or even with making "better humans", is delusional and blasphemous.