2024
Spatial–temporal order–disorder transition in angiogenic NOTCH signaling controls cell fate specification
Kang T, Bocci F, Nie Q, Onuchic J, Levchenko A. Spatial–temporal order–disorder transition in angiogenic NOTCH signaling controls cell fate specification. ELife 2024, 12 DOI: 10.7554/elife.89262.3.Peer-Reviewed Original ResearchCell fate specificationStalk cellsCell type-specificTip cellsNotch signalingFate specificationStalk cell differentiationMorphogenic processesDensity of fibronectinType-specificCell typesCell-cell communicationComplex morphogenic processesResponse to elevated levelsCell fateCell identityDynamics of spatial patternsDepletion of fibronectinEnvironmental cuesSignaling moleculesBlood vessel sproutingSprout extensionAngiogenic morphogenesisSignaling pathwayHypoxic micro-environment
2005
Intercellular transfer of P-glycoprotein mediates acquired multidrug resistance in tumor cells
Levchenko A, Mehta B, Niu X, Kang G, Villafania L, Way D, Polycarpe D, Sadelain M, Larson S. Intercellular transfer of P-glycoprotein mediates acquired multidrug resistance in tumor cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 2005, 102: 1933-1938. PMID: 15671173, PMCID: PMC545583, DOI: 10.1073/pnas.0401851102.Peer-Reviewed Original ResearchConceptsFunctional P-gpP-gpTumor cellsMultidrug resistanceP-gp-mediated resistanceP-gp-negative cellsToxic drug concentrationsP-gp-positive cellsIntercellular transferResistant tumor cellsDifferent tumor cell typesTumor cell typesTumor massTumor stromaP-gp transferTumor typesP-glycoproteinStromal elementsDrug resistanceDrug concentrationsTumor samplesBiologic propertiesCancer therapyCell typesCells
2002
Models of Eukaryotic Gradient Sensing: Application to Chemotaxis of Amoebae and Neutrophils
Levchenko A, Iglesias P. Models of Eukaryotic Gradient Sensing: Application to Chemotaxis of Amoebae and Neutrophils. Biophysical Journal 2002, 82: 50-63. PMID: 11751295, PMCID: PMC1302448, DOI: 10.1016/s0006-3495(02)75373-3.Peer-Reviewed Original ResearchConceptsPersistent signalingBiochemical signal transduction pathwaysSmall G proteinsChemotaxis of amoebaeSignal transduction pathwaysG protein activationEukaryotic cellsGradient sensingEukaryotic gradient sensingG proteinsCell typesSignal gradientExquisite precisionChemoattractant gradientPerfect adaptationSignalingAmoebaeActivatorPositive feedbackSensory systemsContinuous presenceAdaptationShallow gradientsChemoattractantInactivator