Embryo Implantation

Embryoimplantationisaremarkableandcomplexprocess. Approachesde- velopedfromthefieldsofcellanddevelopmentalbiology,immunology, andmolecularbiologyhavegreatlyenhancedourabilitytostudythe sharedaswellasuniquefeaturesofembryo-uterineinteractions. Impres- siveandcriticalgroundworkhasbeenlaidbyalargeanddedicatedarray ofendocrinologists,reproductivebiologists,andanatomists. Thesestudies havesetthestagetoutilizesensitiveandsophisticatedtechniquestode- tectandmodulateproteinandgeneexpression. Justasthesymbiosisofmother andfetusiscriticalforthemaintenanceofpregnancy,soisthesynergyamong investigatorsfrommanydisciplines,bothinbasicandclinicalarenas,keyto unravelingthemysteriesofimplantationandplacentation. Alargegroupof contributorsinthisfieldhadtheopportunitytomeetanddiscussthestateof thisartwiththesupportofSeronoSymposiaUSA,Inc. Whileitisneverpos- sibletobringtogethereveryonewhohasplayedanimportantrole,itwas, nonetheless,bothexcitingandgratifyingtohavesomanycolleaguestogether forthisevent. Inthechaptersthatfollow,thehighlightsofthismeetingarepresented assummarizedbytheindividualpresentersofsevendifferentsessions.The topichasbeenconsideredfromthebroadsocialandethicalimplications ofmoderninvitrofertilizationandassistedreproductivetechnologiesto detailedmolecularcontrolsovereventsthatoccurduringembryonicdevel- opment,uterinepreparationforimplantation,andplacentalorganogenesis. Thesechaptersdemonstratethesignificantandrapidprogressbeingmade inthisfieldofbiologyandmedicine. Atthesametime,theyshowthat muchmoreneedstobedonetounderstandandfullyappreciatethispro- cess. Lessonslearnedfromthiseffortcanbeexpectedtocontinuetopro- videinsightsintoother,relatedfields. Ofthemanycontributorstoour understandingoftheprocessofimplantation,nonehavehadalargerim- pactthanourcolleague,AllenEnders. Dr. Endershasplayedaparamount roleindevelopingthebasicunderstandingofthecellbiologicalprocesses vii VIII Preface underlyingimplantationandplacentationinmanyspecies,includinghu- mans. Hecontinuestocontributeandguidethoughtintheseareas. The participantsofthissymposiumrecognizedDr. Enders'impressivecontribu- tionsbyholdingthiseventinhishonor. DANIELD. CARSON * Contents Preface vii Contributors xiii PartI. Development and Future ofHuman In Vitro Fertilization and Embryo Implantation I.ImplantationintheHumanasViewedbyCanonLaw, CivilLaw,andNaturalReason 3 HOWARDW. JONES, JR. , RICHARDA. MCCORMICK, AND SUSAN L. CROCKIN 2. TheImpactofMaternalAgeandOvarianAge onImplantationEfficiency...12 STEVEN SPANDORFER AND ZEV ROSENWAKS Part II. CellularAspects ofImplantation 3. VascularInvasionDuringImplantationandPlacentation 23 ALLEN C. ENDERS AND THOMASN. BLANKENSHIP 4. OxygenRegulatesHumanCytotrophoblastProliferation, Differentiation,andInvasion:Implicationsfor EndovascularInvasioninNormalPregnancy andPreeclampsia 39 OLGA GENBACEV,YAN ZHOU, MICHAEL T. McMASTER, JOHNW. LUDLOW, CAROLINEH. DAMSKY, AND SUSAN1. FISHER 5. Embryo-MaternalInteractionsafterDiapause inaMarsupial 54 MARILYNB. RENFREE AND GEOFFREY SHAW IX x Contents 6. CellularInteractionsandtheCysteineProteinases intheProcessofMouseImplantation 67 BRUCE BABIARZ, SUZANNE AFONSO, ANDLINDA ROMAGNANO Part III. HormonalRegulation 7. NovelSteroid-RegulatedMarkersofImplantation 83 INDRANIC. BAGCHI 8. MolecularSignalinginImplantation 92 SANJOYK. DAS, BIBHASHC. PARIA, AND SUDHANSU K. DEY 9. IdentificationofProgesterone-RegulatedGenes intheUterus 107 CINDEER. FUNK, BERTW. O'MALLEY, AND FRANCESCO1. DEMAYO PartIV.MolecularMarkersofReceptivity 10. MucinsProvideaBarriertoEmbryoImplantation 123 MARYM. DESOUZA, GULNARA. SURVEYOR, XINHUI ZHOU, JoANNE JULIAN, ANDDANIELD. CARSON II. PotentialInvolvementofTrophinin,Bystin, andTastininEmbryoImplantation 132 MICHIKON. FUKUDA, DAITA NADANO,NAO SUZUKJ, AND JUN NAKAYAMA 12. OsteopontininHumanEndometrium: ARoleinEndometrialReceptivityand EmbryoImplantation? 141 CHRISTOS COUTIFARJS,AKINYINKA OMIGBODUN, PIOTR ZIOLKIEWICZ, AND JOHN HOYER PartV. TrophoblastFactors 13. TheRabbitasaModelforImplantation: InVivoandInVitroStudies 151 LORENH. HOFFMAN,D. RACHEL BREINAN, AND GARETHL. BLAEUER 14. RegulationofTrophoblastEndocrineFunction: ThePlacentaDoesItsOwnThingTranscriptionally...161 JEROMEF. STRAUSSIII ANDLEE-CHUANKAo Contents XI 15. TranscriptionFactorsRegulatingtheDifferentiation oftheTrophoblastCellLineage 167 IANC. SCOTTANDJAMESC.