65. Wang G, McCain ML, Yang L, He A, Pasqualini FS, Agarwal A, Yuan H, Jiang D, Zhang D, Zangi L, Geva J, Roberts AE, Ma Q, Ding J, Chen J, Wang DZ, Li K, Wang J, Wanders RJ, Kulik W, Vaz FM, Laflamme MA, Murry CE, Chien KR, Kelley RI, Church GM, Parker KK, Pu WT. Modeling the mitochondrial cardiomyopathy of Barth syndrome with induced pluripotent stem cell and heart-on-chip technologies. Nat Med. 2014 May 11. doi: 10.1038/nm.3545. [Epub ahead of print]

64. McCain ML, Yuan H, Pasqualini FS, Campbell PH, Parker KK. Matrix elasticity regulates the optimal cardiac myocyte shape for contractility. Am J Physiol Heart Circ Physiol. Jun 2014,306(11)H1525-H1539;DOI: 10.1152/ajpheart.00799.2013.

63. McCain ML, Agarwal A, Nesmith HW, Nesmith AP, Parker KK. Micromolded gelatin hydrogels for extended culture of engineered cardiac tissues Biomaterials. 2014 Apr 11. pii: S0142-9612(14)00312-3. doi: 10.1016/j.biomaterials.2014.03.052. [Epub ahead of print]

62. Sheehy SP, Pasqualini F, Grosberg A, Park SJ, Yvonne Aratyn-Schaus Y, Parker KK. Quality Metrics for Stem Cell-Derived Cardiac Myocytes. Stem Cell Reports. 2014 Mar;2(3):282-294.

61. Badrossamay MR, Balachandran K, Capulli AK, Golecki HM, Agarwal A, Goss JA, Kim H, Shin K, Parker KK. Engineering hybrid polymer-protein super-aligned nanofibers via rotary jet spinning. Biomaterials. 2014 Mar;35(10):3188-97.

60. Mosadegh B, Dabiri BE, Lockett MR, Derda R, Campbell P, Parker KK and Whitesides GM. Three-Dimensional Paper-Based Model for Cardiac Ischemia. Adv. Healthc. Mater. 2014; (3) 2

59. Deravi LF, Magyar AP, Sheehy SP, Bell GRR, Mäthger LM, Senfta SL, Wardill TJ, Lane WS, Kuzirian AM, Hanlon RT, Hu EL, and Parker KK. The structure–function relationships of a natural nanoscale photonic device in cuttlefish chromatophores. J. R. Soc. Interface 11: 20130942.

58. Ye GJC, Aratyn-Schaus Y, Nesmith AP, Pasqualini FS, Alford, PW, and Parker KK. The contractile strength of vascular smooth muscle myocytes is shape dependent. Integr. Biol., 2014; 6: 152-163

57. Deravi LF, Golecki HM, and Parker KK. Protein-Based Textiles: Bio-Inspired and Bio-Derived Materials for Medical and Non-Medical Applications. J. Chem. Biol. Interfaces. 2013; 1(1): 25-34

56. Agarwal A, Goss JA, Cho A, McCain ML and Parker KK. Microfluidic heart on a chip for higher throughput pharmacological studies. Lab on a Chip. 2013; 13(18): 3599–608

55. McCain ML, Sheehy SP, Grosberg A, Goss JA, and Parker KK.
Recapitulating maladaptive, multiscale remodeling of failing myocardium on a chip. PNAS. 2013; 110: 9770-9775.

54.  Agarwal A, Farouz Y, Nesmith AP, Deravi LF, McCain ML, Parker KK. Micropatterning Alginate Substrates for In Vitro Cardiovascular Muscle on a Chip.. Adv. Funct. Mater. Adv. Funct. Mater. 2013; 23(30): 3738–46.

53. Nawroth JC, Parker KK. Design standards for engineered tissues. Biotechnol Adv. 2012 Dec 23. doi:pii: S0734-9750(12)00198-X. 10.1016/j.biotechadv.2012.12.005. [Epub ahead of print] PubMed PMID: 23267860.

52.  Kuo P, Lee H, Bray MA, Geisse NA, Huang YT, Adams WJ, Sheehy SP, Parker KK. Myocyte shape regulates lateral registry of sarcomeres and contractility. Am. J. Pathol. 2012; 181(6):2030-7.

51. Deravi LF, Su T, Paten JA, Ruberti, JW, Bertoldi K, Parker KK. Differential Contributions of Conformation Extension and Domain Unfolding to Properties of Fibronectin Nanotexiles. Nano Letters. 2012; 12 (11):5587–5592.

50. Nawroth JC, Lee H, Feinberg AW, Ripplinger CM, McCain ML, Grosberg A, Dabiri JO, Parker KK. A tissue-engineered jellyfish with biomimetic propulsion. Nat Biotechnol. 2012;30;792-797.

49. Dabiri BE, Lee H, Parker KK. A potential role for integrin signaling in mechanoelectrical feedback. Prog Biophys Mol Biol. 2012; 110: 196–203.

48. Sheehy SP, Grosberg A, Parker KK. The contribution of cellular mechanotransduction to cardiomyocyte form and function. Biomech Model Mechanobiol. 2012; 11: 1227-1239.

47. McCain ML, Lee H, Aratyn-Schaus Y, Kléber AG, Parker KK. Cooperative coupling of cell-matrix and cell-cell adhesions in cardiac muscle. PNAS. 2012;109:9881-9886.

46. Feinberg AW, Alford PW, Jin H, Ripplinger CM, Werdich AA, Sheehy SP, Grosberg A, Parker KK. Controlling the contractile strength of engineered cardiac muscle by hierarchal tissue architecture. Biomaterials. 2012;33:5732-5741.

45. Beauchamp P, Desplantez T, McCain ML, Li W, Asimaki A, Rigoli G, Parker KK, Saffitz JE, Kleber AG. Electrical Coupling and Propagation in Engineered Ventricular Myocardium With Heterogeneous Expression of Connexin43. Circ Res. 2012;110:1445-1453.

44. Grosberg A, Nesmith AP, Goss JA, Brigham MD, McCain ML, Parker KK. Muscle on a chip: In vitro contractility assays for smooth and striated muscle. J Pharmacol Toxicol Methods. 2012;65:126-135.

43. Desplantez T, McCain ML, Beauchamp P, Rigoli G, Rothen-Rutishauser B, Parker KK, Kleber AG. Connexin43 ablation in foetal atrial myocytes decreases electrical coupling, partner connexins, and sodium current. Cardiovasc Res. 2012;94:58-65.

42. Shim J, Grosberg A, Nawroth JC, Parker KK, Bertoldi K. Modeling of cardiac muscle thin films: Pre-stretch, passive and active behavior. J. Biomech. 2012;45:832-841.

41. Sheehy SP, Parker KK. The Role of Mechanical Forces in Guiding Tissue Differentiation. In: Bernstein H, editor. Tissue Engineering in Regenerative Medicine. Springer; 2011:77-97.

40. Balachandran K, Alford PW, Wylie-Sears J, Goss JA, Grosberg A, Bischoff J, Aikawa E, Levine RA, Parker KK. Cyclic strain induces dual-mode endothelial-mesenchymal transformation of the cardiac valve. PNAS. 2011;108:19943-19948.

39. McCain ML, Desplantez T, Geisse NA, Rothen-Rutishauser B, Oberer H, Parker KK, Kleber AG. Cell-to-cell coupling in engineered pairs of rat ventricular cardiomyocytes: relation between Cx43 immunofluorescence and intercellular electrical conductance. Am J Physiol Heart Circ Physiol. 2012;302:H443-H450.

38. Mellado P, McIlwee HA, Badrossamay MR, Goss JA, Mahadevan L, Parker KK. A simple model for nanofiber formation by rotary jet-spinning. Appl Phys Lett. 2011;99:203107.

37. Grosberg A, Alford PW, McCain ML, Parker KK. Ensembles of engineered cardiac tissues for physiological and pharmacological study: Heart on a chip. Lab Chip. 2011;11(24):4165-4173.

36. Alford PW, Nesmith AP, Seywerd, JN, Grosberg A, Parker KK. Vascular smooth muscle contractility depends on cell shape. Integr. Biol. 2011;3(11):1063-1070.

35. Dvir T, Timko BP, Brigham MD, Naik SR, Karajanagi SS, Levy O, Jin H, Parker KK, Langer R, Kohane DS. Nanowired three-dimensional cardiac patches. Nat Nanotechnol. 2011;6:720-725.

34. Hemphill MA, Dabiri BE, Gabriele S, Kerscher L, Franck C, Goss JA, Alford PW, Parker KK. A possible role for integrin signaling in diffuse axonal injury. PLoS ONE. 2011;6:e22899.

33. Alford PW, Dabiri BE, Goss JA, Hemphill MA, Brigham MD, Parker KK. Blast-induced phenotypic switching in cerebral vasospasm. PNAS. 2011;108:12705-12710

32. McCain ML, Parker KK. Mechanotransduction: the role of mechanical stress, myocyte shape, and cytoskeletal architecture on cardiac function. Pflugers Arch – Eur J Physiol. 2011;462:89–104.

31. Grosberg A, Kuo P-L, Guo C-L, Geisse NA, Bray M-A, Adams WJ, Sheehy SP, Parker KK. Self-organization of muscle cell structure and function. PLoS Comput Biol. 2011;7:e1001088.

30. Pong T, Adams WJ, Bray MA, Feinberg AW, Sheehy SP, Werdich AA, Parker KK. Hierarchical architecture influences calcium dynamics in engineered cardiac muscle. Exp Biol Med. 2011;236:366-373

29. Vandeparre H, Gabriele S, Brau F, Gay C, Parker KK, Damman P. Hierarchical wrinkling patterns. Soft Matter. 2010;6:5751-5756.

28. Bray MA, Adams WJ, Geisse NA, Feinberg AW, Sheehy SP, Parker KK. Nuclear morphology and deformation in engineered cardiac myocytes and tissues. Biomaterials. 2010;31:5143-5150.

27. Badrossamay MR, McIlwee HA, Goss JA, Parker KKNanofiber assembly by rotary jet spinning. Nanoletters. 2010;10:2257-2261.

26. Feinberg AW, Parker KK. Surface-initiated assembly of protein nanofabrics. Nanoletters. 2010;10:2184-2191.

25. Göktepe S, Abilez OJ, Parker KK, Kuhl E. A multiscale model for eccentric and concentric cardiac growth through sarcomerogenesis. J Theor Biol. 2010;265:433-442.

24. Alford PW, Feinberg AW, Sheehy SP, Parker KK. Biohybrid thin films for measuring contractility in engineered cardiovascular muscle. Biomaterials. 2010;31:3613-3621.

23. O’Grady M, Kuo P, Parker KK. Optimization of electroactive hydrogel actuators. ACS Appl Mater Interfaces. 2010;2:343-346.

22. Domian IJ, Chiravuri M, van der Meer P, Feinberg AW, Shi X, Shao Y, Wu SM, Parker KK, Chien KR. Generation of functional ventricular heart muscle from mouse ventricular progenitor Cells. Science. 2009;326(5951):426-429. [video download, 1.6 MB]

21. Geisse NA, Sheehy SP, Parker KK.Control of myocyte remodeling in vitro with engineered substrates. In Vitro Cell Dev Biol Anim. 2009;45:343-350.

20. Sheehy SP, Huang S, Parker KK. Time-warped comparison of gene expression in adaptive and maladaptive cardiac hypertrophy. Circ Cardiovasc Genet. 2009;2:116-124.

19. Bol M, Reese S, Parker KK, Kuhl K. Computational modeling of muscular thin films for cardiac repair. Computational Mechanics. 2009;43:535-544.

18. Chien KR, Domain IJ, Parker KK. Cardiogenesis and the complex biology of regenerative cardiovascular medicine. Science. 2008;322:1494-1497. Review.

17. Parker KK, Tan J, Chen CS, Tung L. Myofibrillar architecture in engineered cardiac myocytes. Circ Res. 2008;103:340-342.

16. Bray MA, Sheehy SP, Parker KK. Sarcomere alignment is regulated by myocyte shape. Cell Motil Cytoskeleton. 2008;65:641-651.

15. Geisse NA, Feinberg AW, Kuo P, Sheehy S, Bray MA, Parker KK. Micropatterning Approaches for Cardiac Biology. In: Khademhosseini A, Toner M, Borenstein JT, Takayama S, editors. Micro- and Nanoengineering of the Cell Microenvironment: Technologies and Applications. Boston: Artech House; 2008:341-357.

14. O’Grady ML, Parker KK. Dynamic control of protein-protein interactions. Langmuir. 2008;24:316-322.

13. Feinberg AW, Feigel A, Shevkoplyas SS, Sheehy S, Whitesides GM, Parker KK. Muscular thin films for building actuators and powering devices. Science. 2007;317:1366-1370. [video download, 11 MB]

12. Parker KK, Ingber DE. Extracellular matrix, mechanotransduction and structural hierarchies in heart tissue engineering. Philos Trans R Soc Lond B Biol Sci. 2007;362:1267-1279.

11. Bray MA, Geisse NA, Parker KK. Multidimensional detection and analysis of Ca2+ sparks in cardiac myocytes. Biophys J. 2007;92:4433-4443. [source code / test data]

10. Adams WJ, Pong T, Geisse NA, Sheehy S, Parker KK. Engineering design of a cardiac myocyte. J Computer-Aided Materials Design. 2007;14:19-29.

9. Brangwynne CP, MacKintosh FC, Kumar S, Geisse NA, Talbot J, Mahadevan L, Parker KK, Ingber DE, Weitz DA. Microtubules can bear enhanced compressive loads in living cells because of lateral reinforcement. J Cell Bio. 2006;173:733-741.

8. Huang S, Brangwynne CP, Parker KK, Ingber DE. Symmetry-breaking in mammalian cell cohort migration during tissue pattern formation: role of random-walk persistence. Cell Motil Cytoskeleton. 2005;61:201-213.

7. Parker KK, Lavelle JA, Taylor LK, Wang Z, Hansen DE. Stretch-induced ventricular arrhythmias during acute ischemia and reperfusion. J Appl Physiol. 2004;97:377-383.

6. Latimer DC, Roth BJ, Parker KK. Analytical model for predicting mechanotransduction effects in engineered cardiac tissue. Tissue Eng. 2003;9:283-289.

4. Parker KK, Brock AL, Brangwynne C, Mannix RJ, Wang N, Ostuni E, Geisse NA, Adams JC, Whitesides GM, Ingber DE. Directional control of lamellipodia extension by constraining cell shape and orienting cell tractional forces. FASEB J. 2002;16:1195-1204.

3. Parker KK, Taylor LK, Atkinson JB, Hansen DE, Wikswo JP. The effects of tubulin-binding agents on stretch-induced ventricular arrhythmias. Euro J Pharm. 2001;417:131-140.

2. Brangwynne C, Huang S, Parker KK, Ingber DE, Ostuni E. Symmetry breaking in cultured mammalian cells. In Vitro Cell Dev Bio. 2001;36:563-565.

Grp_photo_Jan 2014_305W_230H

What's New

Congratulations for our new Ph.D.’s June 5th, 2014

L-R Sean Sheehy, Borna Dabiri, Professor Parker, Renita Horton and George Ye.

Postdoc Positions Open March 31st, 2014

The Disease Biophysics Group has three open postdoctoral positions to be filled in the summer of 2014:
1) One position in skeletal muscle tissue engineering,
2) One position in cardiac muscle tissue engineering, and
3) One position in nanofibers and materials science (no biology background required).
Competitive candidates should have an earned doctorate in an appropriate field and a record of first author publications. Candidates should submit, as a single PDF file, their cover letter, CV, and first author publications. Three letters of recommendation will be requested after initial screening of applications. Please send materials to Prof Parker, kkparker at seas dot harvard dot edu.

Congratulations to Dr. Leila Deravi!! March 10th, 2014

The DBG would like to congratulate Leila Deravi who has accepted a tenure track position at the University of New Hampshire. She will be an Assistant Professor of Analytical Chemistry and Materials Chemistry in the Department of Chemistry. Click here for more information. Please join the DBG in extending Leila a hearty congratulations!!

Welcome to the DBG January 17th, 2014

Please welcome Angie Greer to the DBG. Angie is our new Research Associate. Angie comes to the DBG from the US Army Institute of Surgical Research where she worked in the Combat Casualty Care Battlefield Pain Management Task Area as a Research Associate. She is a veteran of Operation Iraqi Freedom/Operation Enduring Freedom having served in the Army for 4 years. Welcome to the DBG!

Graduate Studies in the DBG December 6th, 2013

Folks, there is more email traffic from PhD applicants than I can respond to. I have posted previously on what your application should look like, so scroll thru our News to see specifics.
Here are the first things I look at when I review an application:
1. Your math (this filters out about 90% of the applicants with BME undergraduate degrees…gotta take PDEs and complex variables)
2. Your lab experience
3. Your grades
4. Your reference letters. If the best thing your letter writer can say is that you sat in front of class, asked questions, turned in HWs, and got an A in the class, that doesn’t really distinguish you.
5. Your essays. Nothing is done until its published. If you can’t write a good response to an essay question, with good English, sentence and paragraph structure, I can’t take you.

Prof Parker