SLC11A1 and infection: In conclusion, miR-4687-5p expression affects the intracellular survival of Mtb via miR-4687-5p/NRAMP1/apoptosis; this is realized through high levels of miR-4687-5p expression, low levels of NRAMP1 expression, high apoptosis activity, and more intracellular Mtb post-infection.