2021
Cell cycle regulation of ER membrane biogenesis protects against chromosome missegregation
Merta H, Carrasquillo Rodríguez JW, Anjur-Dietrich MI, Vitale T, Granade ME, Harris TE, Needleman DJ, Bahmanyar S. Cell cycle regulation of ER membrane biogenesis protects against chromosome missegregation. Developmental Cell 2021, 56: 3364-3379.e10. PMID: 34852214, PMCID: PMC8692360, DOI: 10.1016/j.devcel.2021.11.009.Peer-Reviewed Original ResearchConceptsChromosome missegregationEndoplasmic reticulumLipin-1Accurate chromosome segregationER membrane biogenesisCell cycle regulationPhosphatidic acid phosphatase lipin-1Chromosome segregationMembrane biogenesisER membraneChromosome movementMitotic fidelityCycle regulationER sizeMitosis resultsMitotic cytoplasmFormation of micronucleiMitotic cellsMitotic errorsMissegregationER reorganizationHuman cellsBiophysical propertiesCancer cellsLipid metabolism
2020
Lipid and protein dynamics that shape nuclear envelope identity
Bahmanyar S, Schlieker C. Lipid and protein dynamics that shape nuclear envelope identity. Molecular Biology Of The Cell 2020, 31: 1315-1323. PMID: 32530796, PMCID: PMC7353140, DOI: 10.1091/mbc.e18-10-0636.Peer-Reviewed Original ResearchConceptsNuclear envelopeEndoplasmic reticulumMembrane fusionNuclear pore complex biogenesisUnique protein compositionBulk endoplasmic reticulumDe novo lipid synthesisNPC biogenesisComplex biogenesisNovo lipid synthesisLipid asymmetryProtein dynamicsProtein compositionElusive mechanismLipid synthesisLipid bilayersBiogenesisPermeability barrierFunctional specializationMajor threatLipid metabolismUnique compositionMitosisReticulumCompartmentalizationRegulated lipid synthesis and LEM2/CHMP7 jointly control nuclear envelope closure
Penfield L, Shankar R, Szentgyörgyi E, Laffitte A, Mauro MS, Audhya A, Müller-Reichert T, Bahmanyar S. Regulated lipid synthesis and LEM2/CHMP7 jointly control nuclear envelope closure. Journal Of Cell Biology 2020, 219: e201908179. PMID: 32271860, PMCID: PMC7199858, DOI: 10.1083/jcb.201908179.Peer-Reviewed Original ResearchConceptsER membraneNuclear permeability barrierESCRT-III componentsC. elegans oocytesMeiotic spindle microtubulesDe novo glycerolipid synthesisPermeability barrierGlycerolipid synthesisESCRT componentsESCRT-IIIProtein phosphataseCytoplasmic membraneSpindle microtubulesNE permeabilityMeiotic spindleLipid synthesis