Characterization of intercellular junctions in the preimplantation mouse embryo by freeze-fracture and thin-section electron microscopy☆

Terry Magnuson; Anthony Demsey; Christopher W. Stackpole

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Characterization of intercellular junctions in the preimplantation mouse embryo by freeze-fracture and thin-section electron microscopy☆

机译：冷冻断裂和薄层电子显微镜表征植入前小鼠胚胎中的细胞间连接☆

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Intercellularjunctionformationinpreimplantationmouseembryoswasinvestigatedwiththin-sectionandfreeze-fractureelectronmicroscopy.Atthefour-cellstage,regionsofclosemembraneappositionwithfocalpointsofmembranecontactandoccasionalunderlyingcytoplasmicdensitieswereobservedbetweenblastomeresofthin-sectionedembryos.Correspondingintramembranespecializationswerenot,however,observedinfreeze-fracturedembryos.Atthe8-to16-cellstage,smallgapandmaculaoccludensjunctionsandcomplexesofthesejunctionswereobservedatalllevelsbetweenblastomeresoffreeze-fracturedembryos.Asdevelopmentprogressedfromtheearlytomid8-to16-cellstage,thesizeoftheoccludens/gapjunctioncomplexesincreased,formingfasciaoccludens/gapjunctioncomplexes.Atthemorulastage,gapjunctionsandoccludens/gapjunctioncomplexeswereobservedonbothpresumptivetrophoblastandinnercell-masscells.Zonulaoccludensjunctionswerefirstobservedatthemorulastageonpresumptivetrophoblastcellsoffreeze-fracturedembryos.Thenumberofembryospossessingzonulaoccludensjunctionsincreasedatthemidcomparedtotheearlymorulastage.Attheblastocyststage,junctionalcomplexesconsistingofzonulaoccludens,maculaadherens,andgapjunctionswereobservedbetweentrophoblastcellsoffreeze-fracturedandthin-sectionedembryos.Isolatedgapandoccludensjunctions,adherensjunctions,andoccludens/gapjunctioncomplexeswereobservedontrophoblastandinnercell-masscells.

机译：Intercellularjunctionformationinpreimplantationmouseembryoswasinvestigatedwiththin-sectionandfreeze-fractureelectronmicroscopy.Atthefour-cellstage，regionsofclosemembraneappositionwithfocalpointsofmembranecontactandoccasionalunderlyingcytoplasmicdensitieswereobservedbetweenblastomeresofthin-sectionedembryos.Correspondingintramembranespecializationswerenot然而，observedinfreeze-fracturedembryos.Atthe8-至16-cellstage，smallgapandmaculaoccludensjunctionsandcomplexesofthesejunctionswereobservedatalllevelsbetweenblastomeresoffreeze-fracturedembryos.Asdevelopmentprogressedfromtheearlytomid8-至16-cellstage，thesizeoftheoccludens / gapjunctioncomplexesincreased，formingfasciaoccludens / gapjunctioncomplexes.Atthemorulastage，gapjunctionsandoccludens /间隙连接复合体在推定的滋养层细胞和内细胞质细胞上都被观察到。与胚mid早期相比，在胚泡阶段，观察到了由滋养层和结节形胚细胞组成的结合体。

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《Developmental biology》 |1977年第2期|共页
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Terry Magnuson; Anthony Demsey; Christopher W. Stackpole;
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1. Gap junctions on hippocampal mossy fiber axons demonstrated by thin-section electron microscopy and freeze-fracture replica immunogold labeling [J] . Farid Hamzei-Sichani, Naomi Kamasawa, William G. M. Janssen, Proceedings of the National Academy of Sciences of the United States of America . 2007,第30期

机译：薄层电子显微镜和冷冻断裂复制免疫金标记显示海马苔藓纤维轴突上的缝隙连接
2. FREEZE-FRACTURE REPLICA ELECTRON MICROSCOPY COMBINED WITH SDS DIGESTION FOR CYTOCHEMICAL LABELING OF INTEGRAL MEMBRANE PROTEINS - APPLICATION TO THE IMMUNOGOLD LABELING OF INTERCELLULAR JUNCTIONAL COMPLEXES [J] . Fujimoto K. Journal of Cell Science . 1995,第Pta11期

机译：冷冻-断裂复刻电子显微镜结合SDS消化进行细胞膜蛋白质标记的化学标记-在细胞间功能复合物的免疫金标记中的应用
3. Gap junction intercellular communication mediates the competitive cell proliferation disadvantage of irradiated mouse preimplantation embryos in aggregation chimeras. [J] . Vance MM, Wiley LM Radiation Research: Official Organ of the Radiation Research Society . 1999,第5期

机译：间隙连接细胞间通讯介导聚集嵌合体中辐照的小鼠植入前胚胎的竞争性细胞增殖劣势。
4. Effects of culture medium and volume on preimplantation development of mouse embryos [C] . Yu-Hsiang Chung, Yi-Hsing Hsiao, Chia-Hsien Hsu, IEEE International Conference on Nanotechnology . 2015

机译：培养基和体积对小鼠胚胎植入前发育的影响
5. CONTROL OF COMPACTION AND JUNCTIONAL COMMUNICATION IN PREIMPLANTATION MOUSE EMBRYOS. [D] . MCLACHLIN, JEANNE RUTH. 1984

机译：植入前小鼠胚胎的压实和法定通讯的控制。
6. Gap junctions on hippocampal mossy fiber axons demonstrated by thin-section electron microscopy and freeze–fracture replica immunogold labeling [O] . Farid Hamzei-Sichani, Naomi Kamasawa, William G. M. Janssen, 2007

机译：薄层电子显微镜和冷冻断裂复制品免疫金标记显示海马苔藓纤维轴突上的间隙连接
7. Expression of intercellular junctions during preimplantation development of the human embryo [O] . Kate Hardy, Anne Warner, Robert M.L. Winston, 1996

机译：人体胚胎预催化发育期间细胞外结的表达

Characterization of intercellular junctions in the preimplantation mouse embryo by freeze-fracture and thin-section electron microscopy☆

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