Lecture Life Science II Cell-Cell/Cell-Matrix Connections PDF

Summary

These lecture notes cover cell-cell and cell-matrix junctions. Topics include cell cycle, cell death, and cancer. The document details different types of cell junctions. It also discusses the roles of cadherins, desmosomes, tight junctions, gap junctions and selectins in cell adhesion.

Full Transcript

02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl...

02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Lecture Contents Cell Cycle Cell Death Cell- Cell and Cell- Matrix Junctions Cancer 46 46 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Introduction 47 1 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 48 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 49 2 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 50 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Cadherins Form a Diverse Family of Adhesion Molecules 51 3 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Cadherin-Dependent Cell–Cell Adhesion Guides the Organization of Developing Tissues 52 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Cadherin-Dependent Cell–Cell Adhesion Guides the Organization of Developing Tissues 53 4 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 54 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl CELL–CELL JUNCTIONS Epithelial–Mesenchymal Transitions Depend on Control of Cadherins Catenins Link Classical Cadherins to the Actin Cytoskeleton 55 5 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Desmosomes Give Epithelia Mechanical Strength 56 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 57 6 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Tight Junctions Form a Seal Between Cells and a Fence Between Plasma Membrane Domains 58 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Tight Junctions Contain Strands of Transmembrane Adhesion Proteins 59 7 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl A Gap-Junction Connexon Is Made of Six Transmembrane Connexin Subunits 60 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Selectins Mediate Transient Cell–Cell Adhesions in the Bloodstream 61 8 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Members of the Immunoglobulin Superfamily Mediate Ca2+- Independent Cell–Cell Adhesion 62 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl The Extracellular Matrix Is Made and Oriented by the Cells Within It 63 9 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Glycosaminoglycan (GAG) Chains Occupy Large Amounts of Space and Form Hydrated Gels Hyaluronan Acts as a Space Filler During Tissue Morphogenesis and Repair 64 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Collagens Are the Major Proteins of the Extracellular Matrix 65 10 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl 66 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl The Basal Lamina Is a Specialized Form of Extracellular Matrix 67 11 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Integrins Are Transmembrane Heterodimers That Link the Extracellular Matrix to the Cytoskeleton 68 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Integrins Are Transmembrane Heterodimers That Link the Extracellular Matrix to the Cytoskeleton 69 12 02.05.23 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Integrin Defects Are Responsible for Many Genetic Diseases 70 Lecture Life Science II Prof. Dr. Melanie Kappelmann- Fenzl Integrins Can Switch Between an Active and an Inactive Conformation 71 13

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