article published yes Yurichi Wakamoto author Neraaj Dhar author Remy P Chait author 3464AE84-F248-11E8-B48F-1D18A9856A870000-0003-0876-3187 Katrin Schneider author François Signorino Gelo author Stanislas Leibler author John Mckinney author CaGu department GaTk department Exposure of an isogenic bacterial population to a cidal antibiotic typically fails to eliminate a small fraction of refractory cells. Historically, fractional killing has been attributed to infrequently dividing or nondividing &quot;persisters.&quot; Using microfluidic cultures and time-lapse microscopy, we found that Mycobacterium smegmatis persists by dividing in the presence of the drug isoniazid (INH). Although persistence in these studies was characterized by stable numbers of cells, this apparent stability was actually a dynamic state of balanced division and death. Single cells expressed catalase-peroxidase (KatG), which activates INH, in stochastic pulses that were negatively correlated with cell survival. These behaviors may reflect epigenetic effects, because KatG pulsing and death were correlated between sibling cells. Selection of lineages characterized by infrequent KatG pulsing could allow nonresponsive adaptation during prolonged drug exposure. American Association for the Advancement of Science2013 eng 00031298580005910.1126/science.1229858 339611591 - 95 Wakamoto, Y., Dhar, N., Chait, R. P., Schneider, K., Signorino Gelo, F., Leibler, S., &#38; Mckinney, J. (2013). Dynamic persistence of antibiotic-stressed mycobacteria. <i>Science</i>. American Association for the Advancement of Science. <a href="https://doi.org/10.1126/science.1229858">https://doi.org/10.1126/science.1229858</a> Y. Wakamoto <i>et al.</i>, “Dynamic persistence of antibiotic-stressed mycobacteria,” <i>Science</i>, vol. 339, no. 6115. American Association for the Advancement of Science, pp. 91–95, 2013. Wakamoto Y, Dhar N, Chait RP, et al. Dynamic persistence of antibiotic-stressed mycobacteria. <i>Science</i>. 2013;339(6115):91-95. doi:<a href="https://doi.org/10.1126/science.1229858">10.1126/science.1229858</a> Wakamoto, Yurichi, et al. “Dynamic Persistence of Antibiotic-Stressed Mycobacteria.” <i>Science</i>, vol. 339, no. 6115, American Association for the Advancement of Science, 2013, pp. 91–95, doi:<a href="https://doi.org/10.1126/science.1229858">10.1126/science.1229858</a>. Wakamoto, Yurichi, Neraaj Dhar, Remy P Chait, Katrin Schneider, François Signorino Gelo, Stanislas Leibler, and John Mckinney. “Dynamic Persistence of Antibiotic-Stressed Mycobacteria.” <i>Science</i>. American Association for the Advancement of Science, 2013. <a href="https://doi.org/10.1126/science.1229858">https://doi.org/10.1126/science.1229858</a>. Wakamoto Y, Dhar N, Chait RP, Schneider K, Signorino Gelo F, Leibler S, Mckinney J. 2013. Dynamic persistence of antibiotic-stressed mycobacteria. Science. 339(6115), 91–95. Y. Wakamoto, N. Dhar, R.P. Chait, K. Schneider, F. Signorino Gelo, S. Leibler, J. Mckinney, Science 339 (2013) 91–95. 4992018-12-11T11:46:48Z2025-09-30T07:29:30Z