Y. Keynan and E. Rubinstein, The changing face of Klebsiella pneumoniae infections in the community, International Journal of Antimicrobial Agents, vol.30, issue.5, pp.385-394, 2007.
DOI : 10.1016/j.ijantimicag.2007.06.019

R. Podschun and U. Ullmann, Klebsiella spp. as nosocomial pathogens: epidemiology, taxonomy, typing methods, and pathogenicity factors

A. Gupta, K. Ampofo, and D. Rubenstein, Extended Spectrum ?? Lactamase-producing Klebsiella pneumoniae Infections: a Review of the Literature, Journal of Perinatology, vol.23, issue.6, pp.439-482, 2003.
DOI : 10.1038/sj.jp.7210973

D. Livermore, Current Epidemiology and Growing Resistance of Gram-Negative Pathogens, The Korean Journal of Internal Medicine, vol.27, issue.2, pp.128-170, 2012.
DOI : 10.3904/kjim.2012.27.2.128

G. Jacoby and L. Sutton, Properties of plasmids responsible for production of extended-spectrum beta-lactamases., Antimicrobial Agents and Chemotherapy, vol.35, issue.1, pp.164-173, 1991.
DOI : 10.1128/AAC.35.1.164

F. Perez, A. Endimiani, and K. Hujer, The continuing challenge of ESBLs, Current Opinion in Pharmacology, vol.7, issue.5, pp.459-69, 2007.
DOI : 10.1016/j.coph.2007.08.003

J. Rasheed, G. Anderson, and H. Yigit, Characterization of the Extended-Spectrum beta -Lactamase Reference Strain, Klebsiella pneumoniae K6 (ATCC 700603), Which Produces the Novel Enzyme SHV-18, Antimicrobial Agents and Chemotherapy, vol.44, issue.9, pp.2382-2390, 2000.
DOI : 10.1128/AAC.44.9.2382-2388.2000

F. Pasteran, O. Veliz, and M. Rapoport, Sensitive and Specific Modified Hodge Test for KPC and Metallo-Beta- Lactamase Detection in Pseudomonas aeruginosa by Use of a Novel Indicator Strain, Klebsiella pneumoniae ATCC 700603, Journal of Clinical Microbiology, vol.49, issue.12, pp.4301-4304, 2011.
DOI : 10.1128/JCM.05602-11

K. Bush and G. Jacoby, Updated Functional Classification of ??-Lactamases, Antimicrobial Agents and Chemotherapy, vol.54, issue.3
DOI : 10.1128/AAC.01009-09
URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2825993

L. Munoz-price, L. Poirel, and R. Bonomo, Clinical epidemiology of the global expansion of Klebsiella pneumoniae carbapenemases, The Lancet Infectious Diseases, vol.13, issue.9, pp.785-96, 2013.
DOI : 10.1016/S1473-3099(13)70190-7

M. Vaara, Novel derivatives of polymyxins, Journal of Antimicrobial Chemotherapy, vol.68, issue.6, pp.1213-1222, 2013.
DOI : 10.1093/jac/dkt039

J. Koch-weser, V. Sidel, and E. Federman, Adverse Effects of Sodium Colistimethate, Annals of Internal Medicine, vol.72, issue.6, pp.857-68, 1970.
DOI : 10.7326/0003-4819-72-6-857

R. Nation and J. Li, Colistin in the 21st century, Current Opinion in Infectious Diseases, vol.22, issue.6, pp.535-578, 2009.
DOI : 10.1097/QCO.0b013e328332e672

D. Yahav, L. Farbman, L. Leibovici, and M. Paul, Colistin: new lessons on an old antibiotic, Clinical Microbiology and Infection, vol.18, issue.1, pp.18-29, 2012.
DOI : 10.1111/j.1469-0691.2011.03734.x
URL : http://doi.org/10.1111/j.1469-0691.2011.03734.x

T. Velkov, P. Thompson, and R. Nation, Structure???Activity Relationships of Polymyxin Antibiotics, Journal of Medicinal Chemistry, vol.53, issue.5, pp.1898-916, 2010.
DOI : 10.1021/jm900999h
URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2907661

L. Poirel, A. Jayol, and S. Bontron, The mgrB gene as a key target for acquired resistance to colistin in Klebsiella pneumoniae, Journal of Antimicrobial Chemotherapy, vol.70, issue.1, pp.75-80, 2015.
DOI : 10.1093/jac/dku323

G. Binnig, C. Quate, and C. Gerber, Atomic Force Microscope, Physical Review Letters, vol.39, issue.9, pp.930-934, 1986.
DOI : 10.1016/0021-9797(72)90039-2

D. Mü-ller and Y. Dufrêne, Atomic force microscopy: a nanoscopic window on the cell surface, Trends in Cell Biology, vol.21, issue.8, pp.461-470, 2011.
DOI : 10.1016/j.tcb.2011.04.008

C. Formosa, M. Grare, and R. Duval, Nanoscale effects of antibiotics on P. aeruginosa, Nanomedicine: Nanotechnology, Biology and Medicine, vol.8, issue.1, pp.12-18, 2012.
DOI : 10.1016/j.nano.2011.09.009

C. Formosa, M. Grare, and E. Jauvert, Nanoscale analysis of the effects of antibiotics and CX1 on a Pseudomonas aeruginosa multidrug-resistant strain, Scientific Reports, vol.64, p.575, 2012.
DOI : 10.1063/1.1143970

C. Formosa, M. Schiavone, and H. Martin-yken, Nanoscale Effects of Caspofungin against Two Yeast Species, Saccharomyces cerevisiae and Candida albicans, Antimicrobial Agents and Chemotherapy, vol.57, issue.8, pp.3498-506, 2013.
DOI : 10.1128/AAC.00105-13
URL : https://hal.archives-ouvertes.fr/hal-01268080

S. El-kirat-chatel, A. Beaussart, and D. Alsteens, Nanoscale analysis of caspofungin-induced cell surface remodelling in Candida albicans, Nanoscale, vol.68, issue.3, pp.1105-1120, 2013.
DOI : 10.1016/S0006-3495(95)80344-9

R. Soon, R. Nation, and M. Harper, Effect of colistin exposure and growth phase on the surface properties of live Acinetobacter baumannii cells examined by atomic force microscopy, International Journal of Antimicrobial Agents, vol.38, issue.6, pp.493-501, 2011.
DOI : 10.1016/j.ijantimicag.2011.07.014

R. Soon, R. Nation, and P. Hartley, Atomic Force Microscopy Investigation of the Morphology and Topography of Colistin-Heteroresistant Acinetobacter baumannii Strains as a Function of Growth Phase and in Response to Colistin Treatment, Antimicrobial Agents and Chemotherapy, vol.53, issue.12, pp.4979-86, 2009.
DOI : 10.1128/AAC.00497-09

N. Mortensen, J. Fowlkes, and C. Sullivan, Effects of Colistin on Surface Ultrastructure and Nanomechanics of Pseudomonas aeruginosa Cells, Langmuir, vol.25, issue.6, pp.3728-3761, 2009.
DOI : 10.1021/la803898g

G. Francius, B. Tesson, and E. Dague, Nanostructure and nanomechanics of live Phaeodactylum tricornutum morphotypes, Environmental Microbiology, vol.26, issue.5, pp.1344-56, 2008.
DOI : 10.1038/149331a0

J. Hutter and J. Bechhoefer, Calibration of atomic???force microscope tips, Review of Scientific Instruments, vol.2, issue.7, pp.1868-73, 1993.
DOI : 10.1063/1.107024

H. Hertz, Ueber die Beruhrung fester elastischer Korper, J Reine Angew Math, vol.92, pp.156-71, 1881.

M. Arnoldi, M. Fritz, and E. Bä-uerlein, Bacterial turgor pressure can be measured by atomic force microscopy, Physical Review E, vol.10, issue.1, pp.1034-1078, 2000.
DOI : 10.1021/la00022a068

L. Chopinet, C. Formosa, and M. Rols, Imaging living cells surface and quantifying its properties at high resolution using AFM in QI??? mode, Micron, vol.48, pp.26-33, 2013.
DOI : 10.1016/j.micron.2013.02.003
URL : https://hal.archives-ouvertes.fr/hal-01493934

S. Kim, H. Choi, and K. Ko, Differential Expression of Two-Component Systems, pmrAB and phoPQ, with Different Growth phases of Klebsiella pneumoniae in the Presence or Absence of Colistin, Current Microbiology, vol.54, issue.1, pp.37-41, 2014.
DOI : 10.1128/AAC.00762-09

A. Olaitan, S. Diene, and M. Kempf, Worldwide emergence of colistin resistance in Klebsiella pneumoniae from healthy humans and patients in Lao PDR, Thailand, Israel, Nigeria and France owing to inactivation of the PhoP/PhoQ regulator mgrB: an epidemiological and molecular study, International Journal of Antimicrobial Agents, vol.44, issue.6
DOI : 10.1016/j.ijantimicag.2014.07.020

A. Cannatelli, V. Pilato, and T. Giani, In Vivo Evolution to Colistin Resistance by PmrB Sensor Kinase Mutation in KPC-Producing Klebsiella pneumoniae Is Associated with Low-Dosage Colistin Treatment, Antimicrobial Agents and Chemotherapy, vol.58, issue.8, pp.4399-403, 2014.
DOI : 10.1128/AAC.02555-14

A. Jayol, L. Poirel, and A. Brink, Resistance to Colistin Associated with a Single Amino Acid Change in Protein PmrB among Klebsiella pneumoniae Isolates of Worldwide Origin, Antimicrobial Agents and Chemotherapy, vol.58, issue.8, pp.4762-4768, 2014.
DOI : 10.1128/AAC.00084-14

C. Raetz, C. Reynolds, and M. Trent, Lipid A Modification Systems in Gram-Negative Bacteria, Annual Review of Biochemistry, vol.76, issue.1, pp.295-329, 2007.
DOI : 10.1146/annurev.biochem.76.010307.145803

A. Lippa and M. Goulian, Feedback Inhibition in the PhoQ/PhoP Signaling System by a Membrane Peptide, PLoS Genetics, vol.23, issue.12, p.1000788, 2009.
DOI : 10.1371/journal.pgen.1000788.s011

M. Schiavone, N. Sieczkowski, and M. Castex, Effects of the strain background and autolysis process on the composition and biophysical properties of the cell wall from two different industrial yeasts, FEMS Yeast Research, vol.15, issue.2, pp.1-11, 2015.
DOI : 10.1093/femsyr/fou012

P. Bergen, C. Landersdorfer, and J. Zhang, Pharmacokinetics and pharmacodynamics of ???old??? polymyxins: what is new?, Diagnostic Microbiology and Infectious Disease, vol.74, issue.3, pp.213-236, 2012.
DOI : 10.1016/j.diagmicrobio.2012.07.010

T. Mogi and K. Kita, Gramicidin S and polymyxins: the revival of cationic cyclic peptide antibiotics, Cellular and Molecular Life Sciences, vol.41, issue.23, pp.3821-3827, 2009.
DOI : 10.1139/y89-088

J. Hale and R. Hancock, Alternative mechanisms of action of cationic antimicrobial peptides on bacteria, Expert Review of Anti-infective Therapy, vol.5, issue.6, pp.951-960, 2007.
DOI : 10.1586/14787210.5.6.951

H. David and N. Rastogi, Antibacterial action of colistin (polymyxin E) against Mycobacterium aurum., Antimicrobial Agents and Chemotherapy, vol.27, issue.5, pp.701-708, 1985.
DOI : 10.1128/AAC.27.5.701
URL : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC180136/pdf

K. Brogden, Antimicrobial peptides: pore formers or metabolic inhibitors in bacteria?, Nature Reviews Microbiology, vol.92, issue.3, pp.238-50, 2005.
DOI : 10.1016/S0076-6879(97)77028-9

M. Campos, M. Vargas, and V. Regueiro, Capsule Polysaccharide Mediates Bacterial Resistance to Antimicrobial Peptides, Infection and Immunity, vol.72, issue.12, pp.7107-7121, 2004.
DOI : 10.1128/IAI.72.12.7107-7114.2004
URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC529140

E. Llobet, J. Tomá-s, and J. Bengoechea, Capsule polysaccharide is a bacterial decoy for antimicrobial peptides, Microbiology, vol.154, issue.12, pp.3877-86, 2008.
DOI : 10.1099/mic.0.2008/022301-0

H. Liu, J. Wen, and Y. Xiao, Mechanical Characterization of the Cell Nucleus by Atomic Force Microscopy, ACS Nano, vol.8, issue.4, pp.3821-3829, 2014.
DOI : 10.1021/nn500553z

I. Obataya, C. Nakamura, and S. Han, Nanoscale Operation of a Living Cell Using an Atomic Force Microscope with a Nanoneedle, Nano Letters, vol.5, issue.1, pp.27-30, 2005.
DOI : 10.1021/nl0485399

Z. Suo, R. Avci, and M. Deliorman, Bacteria Survive Multiple Puncturings of Their Cell Walls, Langmuir, vol.25, issue.8, pp.4588-94, 2009.
DOI : 10.1021/la8033319