Oh, except for certain portions of some of our cells. Mitochondria contain working parts that are very much like the ones in bacteria. In a high enough dose, gent and all the other aminoglycoside antibiotics will disable some of our cells - probably by binding in mitochondria. The parts of our bodies most sensitive to aminoglycosides are the inner ears and the kidneys. Some of us have inherited a gene on our mitochondria that makes us especially vulnerable to the effects of these medicines.
Some people are more susceptible.
Those of us who have special gene sequences in the DNA of our mitochondria can become deaf with even a small dose of the aminoglycoside antibiotics. Incredibly tiny bean shaped factories that produce energy for cells. We adopted these as our own from ancient bacteria-like cells because they work so very well. Mitochondrial DNA got into our cells along with the mitochondria. Mitochondria, with their DNA, is passed directly from our mother's egg to us.