Andrew Ekpenyong, PhD

Assistant Professor

  • 916 Citations
  • 15 h-Index
20072020

Research output per year

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Research Output

  • 916 Citations
  • 15 h-Index
  • 17 Article
  • 9 Conference contribution
  • 2 Letter
  • 1 Chapter
2020

Quantum Dots for Assessment of Reactive Oxygen Species Accumulation During Chemotherapy and Radiotherapy

Djam, K. H., Lee, B. H., Suresh, S. & Ekpenyong, A. E., Jan 1 2020, Methods in Molecular Biology. Humana Press Inc., p. 293-303 11 p. (Methods in Molecular Biology; vol. 2135).

Research output: Chapter in Book/Report/Conference proceedingChapter

2019
3 Scopus citations
2018

A comparison of methods to assess cell mechanical properties

Wu, P. H., Aroush, D. R. B., Asnacios, A., Chen, W. C., Dokukin, M. E., Doss, B. L., Durand-Smet, P., Ekpenyong, A., Guck, J., Guz, N. V., Janmey, P. A., Lee, J. S. H., Moore, N. M., Ott, A., Poh, Y. C., Ros, R., Sander, M., Sokolov, I., Staunton, J. R., Wang, N. & 2 others, Whyte, G. & Wirtz, D., Jun 18 2018, (Accepted/In press) In : Nature Methods. p. 1-8 8 p.

Research output: Contribution to journalArticle

74 Scopus citations
2017

Mechanical deformation induces depolarization of neutrophils

Ekpenyong, A., Toepfner, N., Fiddler, C., Herbig, M., Li, W., Cojoc, G., Summers, C., Guck, J. & Chilvers, E. R., Jun 1 2017, In : Science advances. 3, 6, e1602536.

Research output: Contribution to journalArticle

21 Scopus citations

The value of mobile ultrasound services in rural communities in South-South Nigeria

Ikpeme, A., Ani, N., Ago, B., Effa, E., Kosoko-Lasaki, O. & Ekpenyong, A., Dec 15 2017, In : Open Access Macedonian Journal of Medical Sciences. 5, 7, p. 1011-1015 5 p.

Research output: Contribution to journalArticle

2016

Chemotherapy impedes in vitro microcirculation and promotes migration of leukemic cells with impact on metastasis

Prathivadhi-Bhayankaram, S. V., Ning, J., Mimlitz, M., Taylor, C., Gross, E. M., Nichols, M. G., Guck, J. & Ekpenyong, A., Oct 28 2016, In : Biochemical and Biophysical Research Communications. 479, 4, p. 841-846 6 p.

Research output: Contribution to journalArticle

3 Scopus citations
2015

Mechanotransduction in neutrophil activation and deactivation

Ekpenyong, A. E., Toepfner, N., Chilvers, E. R. & Guck, J., Nov 1 2015, In : Biochimica et Biophysica Acta - Molecular Cell Research. 1853, 11, p. 3105-3116 12 p.

Research output: Contribution to journalArticle

17 Scopus citations

Myosin II activity softens cells in suspension

Chan, C. J., Ekpenyong, A. E., Golfier, S., Li, W., Chalut, K. J., Otto, O., Elgeti, J., Guck, J. & Lautenschläger, F., Apr 21 2015, In : Biophysical Journal. 108, 8, p. 1856-1869 14 p.

Research output: Contribution to journalArticle

49 Scopus citations

Real-time deformability cytometry: On-the-fly cell mechanical phenotyping

Otto, O., Rosendahl, P., Mietke, A., Golfier, S., Herold, C., Klaue, D., Girardo, S., Pagliara, S., Ekpenyong, A., Jacobi, A., Wobus, M., Töpfner, N., Keyser, U. F., Mansfeld, J., Fischer-Friedrich, E. & Guck, J., Feb 26 2015, In : Nature Methods. 12, 3, p. 199-202 4 p.

Research output: Contribution to journalArticle

259 Scopus citations

Refractive index measurements of single, spherical cells using digital holographic microscopy

Schürmann, M., Scholze, J., Müller, P., Chan, C. J., Ekpenyong, A. E., Chalut, K. J. & Guck, J., Jan 1 2015, In : Methods in Cell Biology. 125, p. 143-159 17 p.

Research output: Contribution to journalArticle

21 Scopus citations
2014

Actin polymerization as a key innate immune effector mechanism to control Salmonella infection

Man, S. M., Ekpenyong, A., Tourlomousis, P., Achouri, S., Cammarota, E., Hughes, K., Rizzo, A., Ng, G., Wright, J. A., Cicuta, P., Guck, J. R. & Bryant, C. E., Dec 9 2014, In : Proceedings of the National Academy of Sciences of the United States of America. 111, 49, p. 17588-17593 6 p.

Research output: Contribution to journalArticle

49 Scopus citations

Separation of blood cells with differing deformability using deterministic lateral displacement

Holmes, D., Whyte, G., Bailey, J., Vergara-Irigaray, N., Ekpenyong, A., Guck, J. & Duke, T., Dec 6 2014, In : Interface Focus. 4, 6, 20140011.

Research output: Contribution to journalArticle

60 Scopus citations
2013

Bacterial infection of macrophages induces decrease in refractive index

Ekpenyong, A. E., Man, S. M., Achouri, S., Bryant, C. E., Guck, J. & Chalut, K. J., May 1 2013, In : Journal of Biophotonics. 6, 5, p. 393-397 5 p.

Research output: Contribution to journalLetter

34 Scopus citations

Elastic theory for the deformation of a solid or layered spheroid under axisymmetric loading

Boyde, L., Ekpenyong, A., Whyte, G. & Guck, J., Apr 1 2013, In : Acta Mechanica. 224, 4, p. 819-839 21 p.

Research output: Contribution to journalArticle

6 Scopus citations
2012

Chromatin decondensation and nuclear softening accompany Nanog downregulation in embryonic stem cells

Chalut, K. J., Höpfler, M., Lautenschläger, F., Boyde, L., Chan, C. J., Ekpenyong, A., Martinez-Arias, A. & Guck, J., Nov 21 2012, In : Biophysical Journal. 103, 10, p. 2060-2070 11 p.

Research output: Contribution to journalArticle

86 Scopus citations

Comparison of stresses on homogeneous spheroids in the optical stretcher computed with geometrical optics and generalized lorenz–mie theory

Boyde, L., Ekpenyong, A., Whyte, G. & Guck, J., Nov 20 2012, In : Applied Optics. 51, 33, p. 7934-7944 11 p.

Research output: Contribution to journalArticle

17 Scopus citations

Quantifying cellular differentiation by physical phenotype using digital holographic microscopy.

Chalut, K. J., Ekpenyong, A. E., Clegg, W. L., Melhuish, I. C. & Guck, J., Mar 2012, In : Integrative biology : quantitative biosciences from nano to macro. 4, 3, p. 280-284 5 p.

Research output: Contribution to journalArticle

51 Scopus citations

Quantitative analysis of deformability-based cell separation using deterministic lateral displacement and optical stretching

Holmes, D., Whyte, G., Ekpenyong, A., Guck, J. & Duke, T., Jan 1 2012, Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012. Chemical and Biological Microsystems Society, p. 536-538 3 p. (Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Viscoelastic Properties of Differentiating Blood Cells Are Fate- and Function-Dependent

Ekpenyong, A. E., Whyte, G., Chalut, K., Pagliara, S., Lautenschläger, F., Fiddler, C., Paschke, S., Keyser, U. F., Chilvers, E. R. & Guck, J., Sep 27 2012, In : PloS one. 7, 9, e45237.

Research output: Contribution to journalArticle

103 Scopus citations
2010

Dual-beam laser traps in biology and medicine: When one beam is not enough

Whyte, G., Lautenschläger, F., Kreysing, M., Boyde, L., Ekpenyong, A., Delabre, U., Chalut, K., Franze, K. & Guck, J., Oct 27 2010, Optical Trapping and Optical Micromanipulation VII. 77620G. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 7762).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations
2009

Determination of cell elasticity through hybrid ray optics and continuum mechanics modeling of cell deformation in the optical stretcher

Ekpenyong, A. E., Posey, C. L., Chaput, J. L., Burkart, A. K., Marquardt, M. M., Smith, T. J. & Nichols, M. G., Nov 10 2009, In : Applied Optics. 48, 32, p. 6344-6354 11 p.

Research output: Contribution to journalArticle

20 Scopus citations

Diffraction imaging of spheres and melanoma cells with a microscope objective

Jacobs, K. M., Yang, L. V., Ding, J., Ekpenyong, A. E., Castellone, R., Lu, J. Q. & Hu, X. H., Sep 1 2009, In : Journal of Biophotonics. 2, 8-9, p. 521-527 7 p.

Research output: Contribution to journalArticle

34 Scopus citations

Study of 3D cell morphology and effect on light scattering distribution

Ekpenyong, A. E., Ding, J., Yang, L. V., Leffler, N. R., Lu, J. Q., Brock, R. S. & Hu, X. H., Oct 20 2009, Advanced Microscopy Techniques. 73671J. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; vol. 7367).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Study of 3D cell morphology and effect on light scattering distribution

Ekpenyong, A. E., Ding, J., Yang, L. V., Leffler, N. R., Lu, J. Q., Scott Brock, R. & Hu, X. H., 2009, European Conference on Biomedical Optics, ECBO 2009. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Study of 3D cell morphology and effect on light scattering distribution

Ekpenyong, A. E., Ding, J., Yang, L. V., Leffler, N. R., Lu, J. Q., Scott Brock, R. & Hu, X. H., Jan 1 2009, European Conference on Biomedical Optics, ECBO 2009. Optical Society of America, (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2007

Hybrid ray optics and continuum mechanics modeling of cell deformation in the optical stretcher

Ekpenyong, A. E. & Nichols, M. G., Jan 1 2007, Organic Materials and Devices for Displays and Energy Conversion, OMD 2007. Optical Society of America, (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hybrid ray optics and continuum mechanics modeling of cell deformation in the optical stretcher

Ekpenyong, A. E. & Nichols, M. G., 2007, Frontiers in Optics, FiO 2007. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hybrid ray optics and continuum mechanics modeling of cell deformation in the optical stretcher

Ekpenyong, A. E. & Nichols, M. G., Jan 1 2007, Laser Science, LS 2007. Optical Society of America, (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hybrid ray optics and continuum mechanics modeling of cell deformation in the optical stretcher

Ekpenyong, A. E. & Nichols, M. G., Jan 1 2007, Frontiers in Optics, FiO 2007. Optical Society of America, (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution