Summary
An extensive network of intermediate filaments that interconnected cytoplasmic dense bodies and connected the dense bodies to the cell surface was revealed in double-fixed, tannic acid-stained preparations of ascidian smooth muscle. The filament network ran through spaces in the continuous network of myofibrils, connecting them longitudinally, obliquely and transversely to form an intimately associated, dual network. In their transverse passage, the intermediate filaments ran across myofibrils along I-zones exclusively, interconnecting successive dense bodies.
The pattern of attachment of intermediate filaments to dense bodies was predominantly “one-sided.” The filaments, which themselves were not incorporated into the contractile apparatus, remained folded or unfolded between myofibrils and between sarcomere-like structures in synchrony with the contraction-relaxation cycles.
These results suggest that the intermediate filaments mechanically maintain the organization and arrangement of myofibrils via an intimate association with the myofibrils in the regions of the dense bodies, in such a way that the filaments do not impede muscle function.
Based on these observations, a new model for the network of intermediate filaments in smooth muscle cells is proposed.
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References
Ashton FT, Somlyo AV, Somlyo AP (1975) The contractile apparatus of vascular smooth muscle: intermediate high voltage stereo electron microscopy. J Mol Biol 98:17–29
Bond M, Somlyo AV (1982) Dense bodies and actin polarity in vertebrate smooth muscle. J Cell Biol 95:403–413
Campbell GR, Uehara Y, Mark G, Burnstock G (1971) Fine structure of smooth muscle cells grown in tissue culture. J Cell Biol 49:21–34
Campbell GR, Chamley-Campbell J, Gröschel-Stewart U, Small JV, Anderson P (1979) Antibody staining of 10-nm (100-Å) filaments in cultured smooth, cardiac and skeletal muscle cells. J Cell Sci 37:303–322
Chlebowski JS, Przybylski RJ, Cox PG (1973) Ultrastructural studies of lizard (Anolis carolinensis) myogenesis in vitro. Dev Biol 33:80–99
Cooke P (1976) A filamentous cytoskeleton in vertebrate smooth muscle fibers. J Cell Biol 68:539–556
Cooke PH, Chase RH (1971) Potassium chloride-insoluble myofilaments in vertebrate smooth muscle cells. Exp Cell Res 66:417–425
Cooke PH, Fay FS (1972) Correlation between fiber length, ultrastructure, and the length-tension relationship of mammalian smooth muscle. J Cell Biol 52:105–116
Endo T, Masaki T (1984) Differential expression and distribution of chicken skeletal- and smooth-muscle type α-actinins during myogenesis in culture. J Cell Biol 99:2322–2332
Fay FS, Fujiwara K, Rees DD, Fogarty KE (1983) Distribution of α-actinin in single isolated smooth muscle cells. J Cell Biol 96:783–795
Forbes MS, Sperelakis N (1980) Structures located at the level of the Z bands in mouse ventricular myocardial cells. Tissue Cell 12:467–489
Franke WW, Schmid E, Schiller DL, Winter S, Jarasch ED, Moll R, Denk H, Jackson BW, Illmensee K (1982) Differentiationrelated patterns of expression of proteins of intermediate-size filaments in tissues and cultured cells. Cold Spring Harbor Symp Quant Biol 46:431–453
Fujimaki N, Kano Y, Ishikawa H (1986) The association of intermediate filaments with the sarcolemma in skeletal muscle fibers. J Electron Microsc 35 [Suppl] 3:2657–2658
Gard DL, Lazarides E (1980) The synthesis and distribution of desmin and vimentin during myogenesis in vitro. Cell 19:263–275
Geiger B, Dutton AH, Tokuyasu KT, Singer SJ (1981) Immunoelectron microscope studies of membrane-microfilament interactions: distribution of α-actinin, tropomyosin, and vinculin in intestinal epithelial brush border and chicken gizzard smooth muscle cells. J Cell Biol 91:614–628
Gross WO (1977) Z-line elementary bodies. Morphological study of sarcomere genesis in chick heart myocytes. J Submicrosc Cytol 9:285–298
Holtzer H, Bennett GS, Tapscott SJ, Croop JM, Toyama Y (1982) Intermediate-size filaments: changes in synthesis and distribution in cells of the myogenic and neurogenic lineages. Cold Spring Harbor Symp Quant Biol 46:317–329
Ishikawa H (1983) Fine structure of skeletal muscle. In: Dowben RM, Shay JW (eds) Cell and Muscle Motility Vol 4. Plenum Press, New York, pp 1–84
Ishikawa H, Bischoff R, Holtzer H (1968) Mitosis and intermediate-sized filaments in developing skeletal muscle. J Cell Biol 38:538–555
Kelly DE (1969) Myofibrillogenesis and Z band differentiation. Anat Rec 163:403–426
Kilarski W, Kozłowska M (1979) Myofibrillogenesis of the lateral musculature in the trout (Salmo trutta L.). Dev Growth Differ 21:349–360
Lazarides E (1980) Intermediate filaments as mechanical integrators of cellular space. Nature 283:249–256
Lazarides E (1982) Intermediate filaments: a chemically heterogeneous, developmentally regulated class of proteins. Annu Rev Biochem 51:219–250
Lazarides E, Granger BL, Gard DL, O'Conner CM, Breckler J, Price M, Danto SL (1982) Desmin- and vimentin-containing filaments and their role in the assembly of the Z disk in muscle cells. Cold Spring Harbor Symp Quant Biol 46:351–378
Lemanski LF (1973) Heart development in the Mexican salamander, Ambystoma mexicanum II. Ultrastructure. Am J Anat 136:487–526
Manasek FJ (1968) Embryonic development of the heart I. A light and electron microscopic study of myocardial development in the early chick embryo. J Morphol 125:329–366
Nunzi MG, Franzini-Armstrong C (1980) Trabecular network in adult skeletal muscle. J Ultrastruct Res 73:21–26
Osborn M, Geisler N, Shaw G, Sharp G, Weber K (1982) Intermediate filaments. Cold Spring Harbor Symp Quant Biol 46:413–429
Peng HB, Wolosewick JJ, Cheng P-C (1981) The development of myofibrils in cultured muscle cells: a whole-mount and thin section electron microscopic study. Dev Biol 88:121–136
Price M, Sanger JW (1979) Intermediate filaments connect Z-discs in adult chicken muscle. J Exp Zool 208:263–269
Price MG, Sanger JW (1983) Intermediate filaments in striated muscle: a review of structural studies in embryonic and adult skeletal muscle. In: Dowben RM, Shay JM (eds) Cell and Muscle Motility Vol 3. Plenum Press, New York, pp 1–40
Rönnau K (1977) Myogenesis and contraction in the early embryonic heart of the rainbow-trout. An electron microscopic study. Cell Tissue Res 180:123–132
Sanger JM, Mittal B, Pochapin MB, Sanger JW (1986) Myofibrillogenesis in living cells microinjected with fluorescently labeled alpha-actinin. J Cell Biol 102:2053–2066
Shimada Y, Isobe Y (1986) Cytoskeletal organization in embryonic chick skeletal muscle cells in vitro revealed by the detergent-extraction, freeze-dry methods. In: Emerson C, Fischman DA, Nadal-Ginard B, Siddiqui MAQ (eds) Molecular Biology of Muscle Development. UCLA symposia on molecular and cellular biology. New series. Vol 29. Alan R Liss Inc, New York, pp 725–739
Small JV (1974) Contractile units in vertebrate smooth muscle cells. Nature 249:324–327
Small JV (1977) Studies on isolated smooth muscle cells: the contractile apparatus. J Cell Sci 24:327–349
Small JV (1985) Geometry of actin-membrane attachments in the smooth muscle cell: the localizations of vinculin and α-actinin. EMBO J 4:45–49
Small JV, Sobieszek A (1977) Studies on the function and composition of the 10-nm (100-Å) filaments of vertebrate smooth muscle. J Cell Sci 23:243–268
Terakado K (1972) Cytological and ultrastructural studies on muscle differentiation in the ascidian, Perophora orientalis. Dev Growth Differ 14:1–23
Terakado K (1973) The effects of actinomycin D on muscle cells of ascidian embryo. Dev Growth Differ 15:179–192
Terakado K, Obinata T (1987) Structure of multinucleated smooth muscle cells of the ascidian Halocynthia roretzi. Cell Tissue Res 247:85–94
Tokuyasu KT, Maher PA, Singer ST (1984) Distributions of vimentin and desmin in developing chick myotubes in vivo. I. Immunofluorescence study. J Cell Biol 98:1961–1972
Tsukita S, Tsukita S, Ishikawa H (1983) Association of actin and 10 nm filaments with the dense body in smooth muscle cells of the chicken gizzard. Cell Tissue Res 229:233–242
Uehara Y, Campbell GR, Burnstock G (1971) Cytoplasmic filaments in developing and adult vertebrate smooth muscle. J Cell Biol 50:484–497
Wang K, Ramirez-Mitchell R (1983) A network of transverse and longitudinal intermediate filaments is associated with sarcomeres of adult vertebrate skeletal muscle. J Cell Biol 96:562–570
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Terakado, K. The pattern of organization of intermediate filaments and their asymmetrical association with dense bodies in smooth muscle of an ascidian Halocynthia roretzi . Cell Tissue Res. 252, 23–32 (1988). https://doi.org/10.1007/BF00213822
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DOI: https://doi.org/10.1007/BF00213822