Cell movements in the sea urchin embryo

Current Opinion in Genetics and Development

Volumn 9, Issue 4, 1999, Pages 461-465

  Ettensohn, Charles A ^a  

^a CARNEGIE MELLON UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

INTEGRIN;

CELL ADHESION; CELL MIGRATION; EMBRYO; EMBRYO DEVELOPMENT; EPITHELIUM CELL; EXTRACELLULAR MATRIX; GASTRULATION; MESENCHYME; MICROSCOPY; NONHUMAN; PRIORITY JOURNAL; REVIEW; SEA URCHIN;

ECHINOIDEA; INVERTEBRATA;

EID: 0033523284     PISSN: 0959437X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0959-437X(99)80070-7     Document Type: Article

References (38)

1. Ettensohn CA: Primary invagination of the vegetal plate during sea urchin gastrulation. Am Zool 1984, 24:571-588.
2. Burke RD, Myers RL, Sexton TL, Jackson C: Cell movements during the initial phase of gastrulation in the sea urchin embryo. Dev Biol 1991, 146:542-557.
3. Hardin J: Local shifts in position and polarized motility drive cell rearrangement during sea urchin gastrulation. Dev Biol 1989, 136:430-445.
4. Logan CY, McClay DR: The allocation of early blastomeres to the ectoderm and endoderm is variable in the sea urchin embryo. Development 1997, 124:2213-2223.
5. Ransick A, Davidson EH: Late specification of veg1 lineages to endodermal fate in the sea urchin embryo. Dev Biol 1998, 195:38-48. The authors of this paper showed that veg1 progeny contribute to the endoderm via involution in S. purpuratus. In this species the extent of veg1 involution is greater on the oral side. Using microinjection of fluorescent lineage tracers, the authors show that veg1 progeny contribute to the endoderm via involution in S. purpuratus. In this species, the extent of veg1 involution is greatest on the oral side. In conjunction with the earlier work of Logan and McClay [4], these studies lead to a modified view of endodermal cell movements and specification.
6. Martins GG, Summers RG, Morrill JB: Cells are added to the archenteron during and following secondary invagination in the sea urchin Lytechinus variegatus. Dev Biol 1998, 198:330-342. This paper uses quantitative morphometric methods to determine changes in cell number and tissue volume in the endo/mesoderm during gastrulation in L. variegatus. The total volume of tissue in the archenteron increases during later gastrulation and even after the traditional endpoint of gastrulation, providing indirect evidence that circumblastoporal cells are recruited into the archenteron during this time.
7. Piston DW, Summers RG, Knobel SM, Morril JB: Characterization of involution during sea urchin gastrulation using two-photon excited photorelease and confocal microscopy. Microsc Microanal 1998, 4:404-414. By marking cells near the blastopore lip using two-photon activation of a caged linear tracer, these workers provide further evidence of involution during both primary and secondary invagination in L. variegatus. They show that involution of prospective hindgut cells occurs after the traditional end point of gastrulation.
8. Davidson EH, Cameron RA, Ransick A: Specification of cell fate in the sea urchin embryo: Summary and some proposed mechanisms. Development 1998, 125:3269-3290.
9. Ettensohn CA, Sweet HC: Patterning the early sea urchin embryo. Curr Top Dev Biol 1999, in press.
10. Kuraishi R, Osanai K: Cell movements during gastrulation of starfish larvae. Biol Bull 1992, 183:258-268.
11. Kuraishi R, Osanai K: Contribution of maternal factors and cellular interaction to determination of archenteron in the starfish embryo. Development 1994, 120:2619-2628.
12. Nakajima Y, Burke RD: The initial phase of gastrulation in sea urchins is accompanied by the formation of bottle cells. Dev Biol 1996, 179:436-446.
13. Kimberly EL, Hardin J: Bottle cells are required for the initiation of primary invagination in the sea urchin embryo. Dev Biol 1998, 204:235-250. This study uses laser ablation to test the role of bottle cells and archenteron roof cells (small micromeres) in the inpocketing of the archenteron. The evidence suggests that bottle cells have only a modest role in facilitating the earliest inpocketing, whereas roof cells are internalized passively.
14. Ruffins SW, Ettensohn CA: A fate map of the vegetal plate of the sea urchin (Lytechinus variegatus) mesenchyme blastula. Development 1996, 122:253-263.
15. Gibson AW, Burke RD: The origin of pigment cells in embryos of the sea urchin Strongylocentrotus purpuratus. Dev Biol 1985, 107:414-419.
16. Ettensohn CA, McClay DR: Cell lineage conversion in the sea urchin embryo. Dev Biol 1988, 125:396-409.
17. Katow H, Solursh M: Ultrastructure of primary mesenchyme cell ingression in the sea urchin Lytechinus pictus. J Exp Zool 1980, 213:231-246.
18. Anstrom JA: Microfilaments, cell shape changes and the formation of primary mesenchyme in sea urchin embryos. J Exp Zool 1992, 264:312-322.
19. Sweet H, Hodor PG, Ettensohn CA: The role of micromeres in Notch signaling and mesoderm specification in the sea urchin embryo. Development 1999, in press.
20. Sherwood DR, McClay DR: LvNotch signaling mediates secondary mesenchyme specification in the sea urchin embryo. Development 1999, 126:1703-1713.
21. Fink RD, McClay DR: Three cell recognition changes accompany the ingression of sea urchin primary mesenchyme cells. Dev Biol 1985, 107:66-74.
22. Hertzler PL, McClay DR: αSU2, an epithelial integrin that binds laminin in the sea urchin embryo. Dev Biol 1999, 207:1-13. This paper describes the cloning and characterization of a laminin-binding α-integrin. This integrin is a candidate for mediating binding of epithelial cells to laminin in the basal lamina that lines the blastocoel.
23. McCarthy RA, Beck K, Burger MM: Laminin is structurally conserved in the sea urchin basal lamina. EM BO J 1987, 6:1587-1593.
24. Miller JR, McClay DR: Characterization of the role of cadherin in regulating cell adhesion during sea urchin development. Dev Biol 1997, 192:323-339.
25. Miller JR, McClay DR: Changes in the pattern of adherens junction- associated β-catenin accompany morphogenesis in the sea urchin embryo. Dev Biol 1997, 192:310-322.
26. Okazaki K: Spicule formation by isolated micromeres of the sea urchin embryo. Am Zool 1975, 15:567-581.
27. Marsden M, Burke RD: Cloning and characterization of novel β-integrin subunits from a sea urchin. Dev Biol 1997, 181:234-245.
28. Marsden M, Burke RD: The βL integrin subunit is necessary for gastrulation in sea urchin embryos. Dev Biol 1998, 203:134-148. This paper characterizes a β-integrin which is upregulated at gastrulation predominantly in secondary mesenchyme cells. On the basis of antibody inhibition studies, the authors propose several functions for βL integrin, including possible roles in vegetal plate folding, mesenchyme cell migration and skeletogenesis.
29. Malinda KM, Fisher GW, Ettensohn CA: Four-dimensional microscopic analysis of the filopodial behavior of primary mesenchyme cells during gastrulation in the sea urchin embryo. Dev Biol 1995, 172:552-566.
30. Miller J, Fraser SE, McClay DR: Dynamics of thin filopodia during sea urchin gastrulation. Development 1995, 121:501-2511.
31. Gustafson T, Wolpert L: Cellular movement and contact in sea urchin morphogenesis. Biol Rev 1967, 42:442-498.
32. Kinoshita S, Saiga H: The role of proteoglycan in the development of sea urchins. I. Abnormal development of sea urchin embryos caused by the disturbance of proteoglycan synthesis. Exp Cell Res 1979, 123:229-236.
33. Solursh M, Mitchell SL, Katow H: Inhibition of cell migration in sea urchin embryos by b-D-xyloside. Dev Biol 1986, 118:325-332.
34. Solursh M: Migration of sea urchin primary mesenchyme cells. In Developmental Biology: A Comprehensive Synthesis Vol 2. Edited by L Browder. Plenum Press; 1986:391-431.
35. Hodor PG, Broadley S, Ettensohn CA: Primary mesenchyme cell filopodia interact with and reorient chrondroitin sulfate core protein-containing fibers during sea urchin gastrulation. Dev Biol 1999, in press. A demonstration that as PMCs migrate they associate directly with and redistribute a specific class of extracellular matrix fiber in the blastocoel that contains a molecule similar to a mammalian, melanoma-associated chondroitin sulfate core protein.
36. Wessell GM, Berg L: A spatially restricted molecule of the extracellular matrix is contributed both maternally and zygotically in the sea urchin embryo. Dev Growth Differ 1995, 37:517-527.
37. Ettensohn CA, Guss KA, Hodor PG, Malinda KA: The morphogenesis of the skeletal system of the sea urchin embryo. In Reproductive Biology Of Invertebrates Edited by JR Collier. New Delhi: Oxford/IBM Publishing, 1997.
38. Hodor PG, Ettensohn CA: The dynamics and regulation of mesenchymal cell fusion in the sea urchin embryo. Dev Biol 1998, 199:111-124. The authors use fluorescent cell labeling and time-lapse confocal laser scanning microscopy to make the first direct observations of cell-cell fusion in vivo. PMCs fuse during early gastrulation and form a single, common syncytium by the mid-gastrula stage. Cell transplantation and isolation experiments are used to show that fusion competence is developmentally programmed in cells of the PMC lineage as early as the 16-cell stage and to demonstrate that the timing of fusion is largely insensitive to extrinsic cues. Certain SMCs are also fusogenic, but PMCS-MC contacts never result in fusion, indicating that these two cell types fuse by distinct mechanisms.