Discovery and Origins | |
Discovery | p. 3 |
Zwischenstrang | p. 5 |
A Brief Overview of the Past 120 Years | p. 6 |
1890-1950s | p. 6 |
1960s-1970s | p. 9 |
1980s to the 21st Century | p. 9 |
Neural Crest and Germ-Layer Theory | p. 12 |
Germ-Layer Theory | p. 14 |
Multiple Tissues from Single Layers | p. 15 |
Heads and Tails | p. 16 |
Secondary Neurulation and Tail Buds | p. 17 |
Induction of Tail Buds | p. 18 |
Neural Crest as the Fourth Germ Layer | p. 19 |
Neural Crest as Inhibitor | p. 20 |
Notes | p. 21 |
Embryological Origins and the Identification of Neural Crest Cells | p. 23 |
Neural Crest | p. 23 |
Before Neurulation | p. 23 |
Establishing the Epidermal-Neural Border | p. 25 |
NCC Markers and Specification of the NC | p. 27 |
HNK-1 and Pax7 | p. 28 |
Snail-2, Bmp4, and Cadherins | p. 29 |
Sox Genes | p. 31 |
Wnt genes | p. 34 |
Specification of Ectoderm as Neural or Epidermal | p. 38 |
NC Induction | p. 39 |
Bmps, Wnts, and Fgfs | p. 39 |
Xenopus | p. 40 |
Chicken Embryos | p. 42 |
A Role for Notch in NCC Induction | p. 42 |
A Role for Bmps in NCC Induction and Beyond | p. 46 |
Zic3 and Zic5 | p. 47 |
Msx Genes and Specification of NCCs | p. 49 |
Establishing Cranial and Trunk Neural Crest | p. 51 |
Chicken Embryos | p. 52 |
Mouse Embryos | p. 53 |
Ectoderm from the Most Rostral Neural Tube | p. 53 |
Rostrocaudal Patterning of CNC | p. 54 |
Hox Genes | p. 54 |
A Role for Mesoderm | p. 56 |
The Midbrain-Hindbrain Boundary | p. 57 |
Dlx Genes and Dorsoventral Patterning of CNC | p. 58 |
Notes | p. 58 |
Delamination, Migration, and Potential | p. 63 |
Delamination | p. 63 |
Cellular Changes Driving Delamination | p. 66 |
Cadherins | p. 68 |
Extracellular Spaces and Delamination | p. 70 |
Migration | p. 71 |
Pathways of CNCC Migration | p. 71 |
Pathways of TNCC Migration | p. 73 |
Migration into Dorsal Fins and Tails | p. 76 |
Molecular Control of NCC Migration | p. 78 |
Extracellular Matrices, Cell Surface Ligands, and Receptors | p. 78 |
Permitting Migration | p. 79 |
Fibronectin | p. 80 |
Proteoglycan Complexes | p. 81 |
Neural Crest Cells Contribute to Extracellular Matrices to Permit Migration | p. 82 |
Thrombospondins | p. 82 |
Tyrosine Kinases Receptors (Trk) | p. 84 |
Ephrins and Eph Receptors | p. 84 |
Inhibiting Migration | p. 84 |
Components of ECMs | p. 84 |
Guiding Migrating NCCs | p. 85 |
Barriers and Components of ECMs | p. 85 |
The Environment at the Final Destination | p. 86 |
Endothelins | p. 89 |
Semaphorins, Delamination, and Migration | p. 90 |
Subpopulations of NCCs | p. 92 |
Restricted Premigratory and Early Migrating Populations of TNCCs | p. 94 |
Restriction During Migration | p. 97 |
Restriction Along the Neural Axis | p. 97 |
Differentiation | p. 99 |
Differentiation of Bipotential Cells | p. 110 |
A Role for Growth Factors | p. 110 |
Dedifferentiate and Redifferentiate | p. 111 |
Summary | p. 112 |
Notes | p. 113 |
Evolutionary Origins | p. 117 |
Precursors of the Neural Crest | p. 118 |
Cephalochordates | p. 122 |
Genes and Gene Networks in Cephalochordates | p. 125 |
AmphiSnaill | p. 126 |
Hox genes: AmphiHox1-AmphiHox12 | p. 127 |
AmphiDll | p. 128 |
AmphiOtx | p. 129 |
AmphiBmp | p. 130 |
AmphiPax | p. 130 |
Retinoic Acid and Retinoic Acid Receptors | p. 131 |
Urochordates-Ascidians | p. 134 |
Nervous System and Notochord | p. 135 |
Pigment Cells | p. 136 |
Calcitonin | p. 136 |
Bipotentiality and Conditional Specification | p. 137 |
Genetic Control of Ascidian Neural Development | p. 137 |
Bmps | p. 138 |
Snail and Hnf3 | p. 138 |
Pax Genes | p. 138 |
Fossil Chordates | p. 139 |
Burgess Shale | p. 139 |
Chengjiang Formation | p. 140 |
The First Vertebrates | p. 141 |
The Pharyngeal Skeleton | p. 141 |
The Origin of Cartilage | p. 142 |
Comparative Genomics and Bioinformatics | p. 146 |
Molecular Fingerprinting: Genetic Labeling/Selection and GeneChip Microarray Technology | p. 149 |
Jawless Vertebrates and the Origin of Jaws | p. 149 |
Jaws from Gill Arches? | p. 150 |
Notes | p. 153 |
Neural-Crest Derivatives | |
Pigment Cells (Chromatophores) | p. 159 |
Types of Chromatophores | p. 160 |
Melanosomes | p. 162 |
Lampreys | p. 163 |
Urodele and Anuran Amphibians | p. 163 |
Patterns of Pigmentation | p. 164 |
Larval-to-Adult Patterns | p. 165 |
Teleost Fish | p. 167 |
Migration and Cell Fate | p. 168 |
Larval Patterns | p. 169 |
Genes and Cell Lines | p. 170 |
Birds | p. 172 |
Patterning Feather Tracts | p. 173 |
Non-Avian Reptiles | p. 173 |
Mammals | p. 174 |
Pattern Formation | p. 174 |
Neurocristopathies | p. 175 |
Notes | p. 176 |
Neuronal Cells and Nervous Systems | p. 179 |
The Neural Crest, Neurons, and Nervous Systems | p. 180 |
The Peripheral Nervous System-Spinal and Cranial Ganglia | p. 181 |
Placodal Ectoderm | p. 183 |
Placodal Markers and Specification of Placodal Ectoderm | p. 189 |
The Panplacodal Domain | p. 191 |
Induction of Individual Placodes | p. 192 |
The Autonomic Nervous System | p. 193 |
Schwann Cells | p. 195 |
Glial Cells | p. 195 |
Vagal and Sacral Neural Crest | p. 197 |
Rohon-Beard Neurons | p. 197 |
Apoptosis Removes R-B Neurons | p. 198 |
Neural Crest Origin and Relationships to Other Neurons | p. 198 |
Genetic Control of R-B Neurons | p. 199 |
Notes | p. 200 |
Cartilage Cells and Skeletal Systems | p. 203 |
Pharyngeal Skeletons of Hagfish | p. 205 |
Pharyngeal Skeletons of Lamprey | p. 208 |
Cartilages | p. 208 |
Vitamin A | p. 213 |
Amphibian Craniofacial Skeletons | p. 213 |
Extirpating and Transplanting Amphibian Neural Crest | p. 214 |
Epithelial-Mesenchymal Interaction Required to Initiate Chondrogenesis | p. 217 |
Cascades of Interactions in Amphibian Craniofacial Development | p. 218 |
Labeling Amphibian CNCCs | p. 221 |
Timing of Migration | p. 223 |
Mapping CNCCs in Fish | p. 227 |
Elasmobranchs | p. 227 |
Teleosts | p. 228 |
Zebrafish Mutants and Pharyngeal Arch Development | p. 228 |
Distalless (Dlx) and the First and Second Pharyngeal Arches | p. 228 |
Chameleon (Con) and the Caudal Pharyngeal Arches | p. 229 |
Chinless (Chn) and the Absence of NCC from all Pharyngeal Arches | p. 229 |
Ninja and the Growth of Pharyngeal Arch Cartilages | p. 229 |
Skeletogenic NCCs in Reptiles | p. 230 |
CNCCs | p. 230 |
TNCCs | p. 231 |
Avian CNCCs | p. 231 |
3H-thymidine Labeling | p. 231 |
Quail/Chicken Chimeras | p. 232 |
The Chondrogenic CNC | p. 232 |
Cell Lineages in CNCCs | p. 233 |
CNCCs and Muscle Patterns | p. 237 |
Mapping the Mouse CNC | p. 238 |
Notes | p. 244 |
Teeth and Hearts: The Odontogenic and Cardiac Neural Crests | p. 247 |
Teeth | p. 247 |
The Odontogenic Neural Crest | p. 248 |
Teeth but not Cartilage from Trunk NCCs | p. 250 |
Cartilage from TNCCs? | p. 252 |
Origination of Dentine and Bone | p. 253 |
Hearts | p. 255 |
Indirect Effects of Cranial NCCs on Heart Function | p. 256 |
Direct Effects of Cranial NCCs on Heart Function | p. 256 |
The Avian Cardiac Neural Crest | p. 257 |
Cardiac Cartilages | p. 260 |
Cardiac Neural Crest in Fish and Amphibians | p. 261 |
Cardiac Neural Crest in Mammals | p. 261 |
Cardiac Defects | p. 262 |
Notes | p. 264 |
Abnormal Development and the Neural Crest | |
Neurocristopathies | p. 269 |
Antiquity | p. 269 |
Syndromology and Neural Tube Defects | p. 269 |
The Utility of the Germ-Layer Theory | p. 271 |
Types of Neurocristopathies | p. 273 |
CHARGE Syndrome | p. 276 |
PAX6 and CHD7 | p. 276 |
Neuroblastomas | p. 278 |
The Neoplastic State | p. 278 |
Diagnosis | p. 279 |
RaLP | p. 279 |
Model Systems | p. 280 |
von Recklinghausen Neurofibromatosis | p. 280 |
Involvement of Non-Neural-Crest Cells | p. 282 |
John Merrick-the 'Elephant Man' | p. 282 |
Animal Models and Mutations | p. 283 |
APUDomas | p. 284 |
Hirschsprung Disease | p. 286 |
DiGeorge Syndrome | p. 288 |
Genetics | p. 289 |
Genes Involved | p. 289 |
Notes | p. 291 |
NCC Development Revisited in the Context of Birth Defects | p. 295 |
Susceptible Stages of Neural Crest Development | p. 298 |
Defective Migration | p. 299 |
Defective Proliferation | p. 300 |
Enhanced Cell Death | p. 300 |
Defective Induction | p. 301 |
Vitamin A, Craniofacial Defects, and the Neural Crest | p. 302 |
Direct Action In Vivo | p. 302 |
Craniofacial Defects | p. 305 |
Mechanisms of Action | p. 308 |
Indirect Effects | p. 309 |
Evolutionary Origins of Sensitivity to Retinoic Acid | p. 309 |
Defects Following Disruption of the Hox Code | p. 310 |
Hoxa1 | p. 310 |
Hoxa2 | p. 311 |
Hoxa1, Hoxa2, and Hoxb1 | p. 311 |
Mutations and Birth Defects | p. 312 |
Looptail | p. 312 |
Splotch | p. 312 |
Regulation | p. 314 |
Sources of Cells | p. 316 |
Completeness of Regulation | p. 316 |
Pharyngeal-Arch Regulation | p. 317 |
Dorsal Root Ganglion Regulation | p. 317 |
Regulation of Cardiac Neural Crest | p. 319 |
Placodal Regulation from the Cardiac Neural Crest? | p. 320 |
Neural Crest Cells as Stem Cells | p. 321 |
Bi-, Tri-, and Multipotential NCCs | p. 321 |
What is a Stem Cell? | p. 322 |
NCCs as Stem Cells | p. 323 |
Notes | p. 325 |
Common Names of Species Discussed | p. 329 |
Species (with Common Names) Arranged by Major Groups | p. 333 |
References | p. 339 |
Index | p. 387 |
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