Fourier's law of heat transfer and its implication to cell motility.
Fourier's law of heat transfer addressing temperature differences is intrinsically selective in favoring the mitigation of the differences proceeding as fast as possible. We present an experimental demonstration of such selective behavior of material origin. When an actin filament equipped with nano-scale heat acceptors was placed under heat pulsation, it demonstrated a unidirectional movement without the presence of myosin or ATP. The prime factor for the unidirectional movement was the temperature differences between the locally heated portions on the actin filament and the cooler material bodies in the surroundings. The unidirectional movement could be enhanced in the process of mitigating the temperature differences as fast as possible.
Kawaguchi
Tomoaki
T
Department of BioEngineering, Nagaoka University of Technology, Kamitomioka, Nagaoka 940-2188, Japan.
Honda
Hajime
H
Hatori
Kuniyuki
K
Imai
Ei-ichi
E
Matsuno
Koichiro
K
D008841:Actin Cytoskeleton / Q000502:physiology; D000255:Adenosine Triphosphate / Q000737:chemistry; D001703:Biophysics / Q000379:methods*; D002465:Cell Movement; D006358:Hot Temperature; D009218:Myosins / Q000737:chemistry; D049490:Systems Biology; D013696:Temperature; D013816:Thermodynamics; D013997:Time Factors
D000255:Adenosine Triphosphate; D009218:Myosins