I don't see why you're being downvoted. What about the accumulation of nanoparticles among cells, do they traverse the cell membrane? Can they cause cell wither

I don't see why you're being downvoted. What about the accumulation of nanoparticles among cells, do they traverse the cell membrane? Can they cause cell withering or dysfunction, alter gene expression, hormonal balance or cause microcuts? What about when they degenerate?