Light-induced shape transitions of unilamellar vesicles

被引:20
作者
Brückner, E [1 ]
Sonntag, P [1 ]
Rehage, H [1 ]
机构
[1] Univ Essen Gesamthsch, Inst Phys Chem, D-45141 Essen, Germany
关键词
D O I
10.1021/la000256i
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In the present study fluorescence microscopy is used in order to investigate the light-induced shape transitions of giant unilamellar vesicles. Therefore pyrene was solubilized in the lipophilic core of the bilayer which allows the transformation of the shape of unilamellar vesicles upon UV irradiation. It turns out that tubular vesicles tend to collapse after illumination forming a string of nearly monodisperse spherical pearls. Giant unilamellar spherical vesicles with small excess areas can be changed reversibly into elliptical aggregates after irradiation with UV light.
引用
收藏
页码:2308 / 2311
页数:4
相关论文
共 18 条
[1]  
[Anonymous], HDB NONMEDICAL APPL
[2]   INSTABILITY AND PEARLING STATES PRODUCED IN TUBULAR MEMBRANES BY COMPETITION OF CURVATURE AND TENSION [J].
BARZIV, R ;
MOSES, E .
PHYSICAL REVIEW LETTERS, 1994, 73 (10) :1392-1395
[3]   AN APPLICATION OF THE OPTICAL MICROSCOPY TO THE DETERMINATION OF THE CURVATURE ELASTIC-MODULUS OF BIOLOGICAL AND MODEL MEMBRANES [J].
BIVAS, I ;
HANUSSE, P ;
BOTHOREL, P ;
LALANNE, J ;
AGUERRECHARIOL, O .
JOURNAL DE PHYSIQUE, 1987, 48 (05) :855-867
[4]   Influence of toluene on the bending elastic properties of giant phosphatidylcholine vesicles [J].
Brückner, E ;
Sonntag, P ;
Rehage, H .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (10) :2311-2319
[5]   METHOD FOR MEASURING MEMBRANE MICROVISCOSITY USING PYRENE EXCIMER FORMATION - APPLICATION TO HUMAN-ERYTHROCYTE GHOSTS [J].
DEMBO, M ;
GLUSHKO, V ;
ABERLIN, ME ;
SONENBERG, M .
BIOCHIMICA ET BIOPHYSICA ACTA, 1979, 552 (02) :201-211
[6]   Spontaneous curvature of fluid vesicles induced by trans-bilayer sugar asymmetry [J].
Döbereiner, HG ;
Selchow, O ;
Lipowsky, R .
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, 1999, 28 (02) :174-178
[7]  
DOBEREINER HG, 1993, BIOPHYS J, V65, P1396
[8]   BILAYER BENDING ELASTICITY MEASURED BY FOURIER-ANALYSIS OF THERMALLY EXCITED SURFACE UNDULATIONS OF FLACCID VESICLES [J].
ENGELHARDT, H ;
DUWE, HP ;
SACKMANN, E .
JOURNAL DE PHYSIQUE LETTRES, 1985, 46 (08) :L395-L400
[9]   LATERAL DIFFUSION IN HYDROPHOBIC REGION OF MEMBRANES - USE OF PYRENE EXCIMERS AS OPTICAL PROBES [J].
GALLA, HJ ;
SACKMANN, E .
BIOCHIMICA ET BIOPHYSICA ACTA, 1974, 339 (01) :103-115
[10]  
GREGORIADIS G, 1983, LIPOSOME TECHNOLOGY