Selective spatial localization of actomyosin motor function by chemical surface patterning

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Selective spatial localization of actomyosin motor function by chemical surface patterning. / Sundberg, Mark; Balaz, Martina; Bunk, Richard; Rosengren-Holmberg, Jenny P.; Montelius, Lars; Nicholls, Ian A.; Omling, Pär; Tagerud, Sven; Mansson, Alf.

I: Langmuir, Vol. 22, Nr. 17, 2006, s. 7302-7312.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

Sundberg, M, Balaz, M, Bunk, R, Rosengren-Holmberg, JP, Montelius, L, Nicholls, IA, Omling, P, Tagerud, S & Mansson, A 2006, 'Selective spatial localization of actomyosin motor function by chemical surface patterning', Langmuir, vol. 22, nr. 17, s. 7302-7312. https://doi.org/10.1021/la060365i

APA

Sundberg, M., Balaz, M., Bunk, R., Rosengren-Holmberg, J. P., Montelius, L., Nicholls, I. A., ... Mansson, A. (2006). Selective spatial localization of actomyosin motor function by chemical surface patterning. Langmuir, 22(17), 7302-7312. https://doi.org/10.1021/la060365i

CBE

Sundberg M, Balaz M, Bunk R, Rosengren-Holmberg JP, Montelius L, Nicholls IA, Omling P, Tagerud S, Mansson A. 2006. Selective spatial localization of actomyosin motor function by chemical surface patterning. Langmuir. 22(17):7302-7312. https://doi.org/10.1021/la060365i

MLA

Vancouver

Sundberg M, Balaz M, Bunk R, Rosengren-Holmberg JP, Montelius L, Nicholls IA et al. Selective spatial localization of actomyosin motor function by chemical surface patterning. Langmuir. 2006;22(17):7302-7312. https://doi.org/10.1021/la060365i

Author

Sundberg, Mark ; Balaz, Martina ; Bunk, Richard ; Rosengren-Holmberg, Jenny P. ; Montelius, Lars ; Nicholls, Ian A. ; Omling, Pär ; Tagerud, Sven ; Mansson, Alf. / Selective spatial localization of actomyosin motor function by chemical surface patterning. I: Langmuir. 2006 ; Vol. 22, Nr. 17. s. 7302-7312.

RIS

TY - JOUR

T1 - Selective spatial localization of actomyosin motor function by chemical surface patterning

AU - Sundberg, Mark

AU - Balaz, Martina

AU - Bunk, Richard

AU - Rosengren-Holmberg, Jenny P.

AU - Montelius, Lars

AU - Nicholls, Ian A.

AU - Omling, Pär

AU - Tagerud, Sven

AU - Mansson, Alf

PY - 2006

Y1 - 2006

N2 - We have previously described the efficient guidance and unidirectional sliding of actin filaments along nanosized tracks with adsorbed heavy meromyosin (HMM; myosin II motor fragment). In those experiments, the tracks were functionalized with trimethylchlorosilane (TMCS) by chemical vapor deposition (CVD) and surrounded by hydrophilic areas. Here we first show, using in vitro motility assays on nonpatterned and micropatterned surfaces, that the quality of HMM function on CVD-TMCS is equivalent to that on standard nitrocellulose substrates. We further examine the influences of physical properties of different surfaces (glass, SiO2, and TMCS) and chemical properties of the buffer solution on motility. With the presence of methylcellulose in the assay solution, there was HMM-induced actin filament sliding on both glass/SiO2 and on TMCS, but the velocity was higher on TMCS. This difference in velocity increased with decreasing contact angles of the glass and SiO2 surfaces in the range of 20-67 degrees (advancing contact angles for water droplets). The corresponding contact angle of CVD-TMCS was 81 degrees. In the absence of methylcellulose, there was high-quality motility on TMCS but no motility on glass/SiO2. This observation was independent of the contact angle of the glass/SiO2 surfaces and of HMM incubation concentrations (30-150 mu g mL(-1)) and ionic strengths of the assay solution (20-50 mM). Complete motility selectivity between TMCS and SiO2 was observed for both nonpatterned and for micro- and nanopatterned surfaces. Spectrophotometric analysis of HMM depletion during incubation, K/EDTA ATPase measurements, and total internal reflection fluorescence spectroscopy of HMM binding showed only minor differences in HMM surface densities between TMCS and SiO2/glass. Thus, the motility contrast between the two surface chemistries seems to be attributable to different modes of HMM binding with the hindrance of actin binding on SiO2/glass.

AB - We have previously described the efficient guidance and unidirectional sliding of actin filaments along nanosized tracks with adsorbed heavy meromyosin (HMM; myosin II motor fragment). In those experiments, the tracks were functionalized with trimethylchlorosilane (TMCS) by chemical vapor deposition (CVD) and surrounded by hydrophilic areas. Here we first show, using in vitro motility assays on nonpatterned and micropatterned surfaces, that the quality of HMM function on CVD-TMCS is equivalent to that on standard nitrocellulose substrates. We further examine the influences of physical properties of different surfaces (glass, SiO2, and TMCS) and chemical properties of the buffer solution on motility. With the presence of methylcellulose in the assay solution, there was HMM-induced actin filament sliding on both glass/SiO2 and on TMCS, but the velocity was higher on TMCS. This difference in velocity increased with decreasing contact angles of the glass and SiO2 surfaces in the range of 20-67 degrees (advancing contact angles for water droplets). The corresponding contact angle of CVD-TMCS was 81 degrees. In the absence of methylcellulose, there was high-quality motility on TMCS but no motility on glass/SiO2. This observation was independent of the contact angle of the glass/SiO2 surfaces and of HMM incubation concentrations (30-150 mu g mL(-1)) and ionic strengths of the assay solution (20-50 mM). Complete motility selectivity between TMCS and SiO2 was observed for both nonpatterned and for micro- and nanopatterned surfaces. Spectrophotometric analysis of HMM depletion during incubation, K/EDTA ATPase measurements, and total internal reflection fluorescence spectroscopy of HMM binding showed only minor differences in HMM surface densities between TMCS and SiO2/glass. Thus, the motility contrast between the two surface chemistries seems to be attributable to different modes of HMM binding with the hindrance of actin binding on SiO2/glass.

U2 - 10.1021/la060365i

DO - 10.1021/la060365i

M3 - Article

VL - 22

SP - 7302

EP - 7312

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 17

ER -