2023
Multifocal heterotopic ossification in a man with germline variants of LIM Mineralization Protein‐1 (LMP‐1)
Sangadala S, Shore E, Xu M, Bergwitz C, Lozano‐Calderon S, Lin A, Boden S, Kaplan F. Multifocal heterotopic ossification in a man with germline variants of LIM Mineralization Protein‐1 (LMP‐1). American Journal Of Medical Genetics Part A 2023, 191: 2164-2174. PMID: 37218523, DOI: 10.1002/ajmg.a.63304.Peer-Reviewed Original ResearchConceptsLIM mineralization protein-1Bone morphogenetic protein (BMP) pathwayGermline variantsBone morphogenetic proteinRecombinant BMP-2LMP-1Gene-disease relationshipsC2C12 cellsGenetic analysisIntracellular proteinsWT proteinHeterotopic ossificationProtein pathwayOsteoblast markersWT cellsBMP-2Protein 1Coding variantsGene-diseaseProtein levelsControl cellsPathogenic variantsLMP-1 variantsCo-transfectionMC3T3 cells
2020
Slc20a1/Pit1 and Slc20a2/Pit2 are essential for normal skeletal myofiber function and survival
Chande S, Caballero D, Ho BB, Fetene J, Serna J, Pesta D, Nasiri A, Jurczak M, Chavkin NW, Hernando N, Giachelli CM, Wagner CA, Zeiss C, Shulman GI, Bergwitz C. Slc20a1/Pit1 and Slc20a2/Pit2 are essential for normal skeletal myofiber function and survival. Scientific Reports 2020, 10: 3069. PMID: 32080237, PMCID: PMC7033257, DOI: 10.1038/s41598-020-59430-4.Peer-Reviewed Original ResearchConceptsHyp miceMuscle functionSkeletal muscleMyofiber functionNormal body weightSkeletal muscle atrophyGene dose-dependent reductionConditional knockout miceReduced oxygen consumption rateStimulation of AMP kinaseKnockout miceHypophosphatemic disordersMuscle atrophyERK1/2 activationGrip strengthConditional deletionHormonal changesLow bloodBody weightC2C12 myoblastsMiceFurther evaluationBlood phosphateDependent reductionAMP kinase
2013
Genetic Determinants of Phosphate Response in Drosophila
Bergwitz C, Wee MJ, Sinha S, Huang J, DeRobertis C, Mensah LB, Cohen J, Friedman A, Kulkarni M, Hu Y, Vinayagam A, Schnall-Levin M, Berger B, Perkins LA, Mohr SE, Perrimon N. Genetic Determinants of Phosphate Response in Drosophila. PLOS ONE 2013, 8: e56753. PMID: 23520455, PMCID: PMC3592877, DOI: 10.1371/journal.pone.0056753.Peer-Reviewed Original ResearchConceptsLarval developmentGenome-wide RNAi screenDrosophila larval developmentGenetic determinantsImportant cellular processesNovel genetic determinantsAdult life spanLife spanExtracellular phosphate levelsD-rafRNAi-mediated inhibitionRNAi screenDrosophila melanogasterPhosphate responseCellular processesResponse to phosphateAdult fliesCandidate genesLive fliesMAPK activationAvailability of phosphateCellular responsesHigh phosphate mediumMalpighian tubulesReduced life span
2002
Cyclic-adenosine 3′,5′-monophosphate-stimulated c-fos gene transcription involves distinct calcium pathways in single β-cells
Schöfl C, Waring M, Bergwitz C, Arseniev L, von zur Mühlen A, Brabant G. Cyclic-adenosine 3′,5′-monophosphate-stimulated c-fos gene transcription involves distinct calcium pathways in single β-cells. Molecular And Cellular Endocrinology 2002, 186: 121-131. PMID: 11850128, DOI: 10.1016/s0303-7207(01)00609-8.Peer-Reviewed Original ResearchConceptsSerum response elementCa(2+)-influxC-fos gene transcriptionC-fos promoterCAMP response elementC-fosBeta-cellsModes of Ca(2+) entryGene transcriptionCa(2+) entryCa(2+C-fos mRNA expressionCa(2+) signalingForskolin-induced riseCa(2+)-free mediumForskolin-induced increaseCytosolic free calciumActivation of c-fos transcriptionCa(2+)-dependent pathwaysSingle B cellsCa(2+)-mediated mechanismsBeta-cell activityC-fos promoter activityC-fos transcriptionEffect of cAMP
2001
Wnts differentially regulate colony growth and differentiation of chondrogenic rat calvaria cells
Bergwitz C, Wendlandt T, Kispert A, Brabant G. Wnts differentially regulate colony growth and differentiation of chondrogenic rat calvaria cells. Biochimica Et Biophysica Acta 2001, 1538: 129-140. PMID: 11336784, DOI: 10.1016/s0167-4889(00)00123-3.Peer-Reviewed Original ResearchConceptsChondrogenic cell lineReporter gene expressionWnt effectsGene expressionCell linesWnt-7aChondrogenic differentiationWnt-5aGreen fluorescence proteinProtein kinase C.Protein kinase CFrizzled-related proteinsCollagen type II promoterLimb patterningSignal transductionEmbryonic developmentRat calvaria cellsWnt familyType II promoterNIH3T3 cellsReporter systemCartilage-specific proteoglycansFluorescence proteinCartilage differentiationKinase C.
2000
A versatile chondrogenic rat calvaria cell line R-tTA-24 that permits tetracycline-regulated gene expression
Bergwitz C, Wendlandt T, Pötter E, Glomb I, Gras K, von zur Mühlen A, Brabant G. A versatile chondrogenic rat calvaria cell line R-tTA-24 that permits tetracycline-regulated gene expression. Histochemistry And Cell Biology 2000, 113: 145-150. PMID: 10766267, DOI: 10.1007/s004180050017.Peer-Reviewed Original ResearchConceptsTetracycline-regulated gene expressionGene expressionTetracycline-regulated gene expression systemStable transfectionChondrogenic differentiationGene expression systemGene of interestBasis of phenotypeTetracycline transactivatorGenetic manipulationHygromycin selectionExpression systemCartilage-specific proteoglycansNeomycin selectionFlexible genetic manipulationLuciferase activityType II expressionCell linesAlcian blue stainingDifferentiationCollagen type II expressionTransfectionExpressionBlue stainingGenes
1991
Specific, high-affinity binding sites for angiotensin II on Mycoplasma hyorhinis
Bergwitz C, Madoff S, Abou-Samra A, Ju¨ppner H. Specific, high-affinity binding sites for angiotensin II on Mycoplasma hyorhinis. Biochemical And Biophysical Research Communications 1991, 179: 1391-1399. PMID: 1718269, DOI: 10.1016/0006-291x(91)91727-t.Peer-Reviewed Original ResearchConceptsAngiotensin II receptorsAngiotensin IIII receptorsHigh-affinity binding sitesAngiotensin II bindingOpossum kidney cellsCGP 42112ADuP 753Angiotensin IIIStrains of Mycoplasma hyorhinisAngiotensin IHuman angiotensin IIM. hominisHigh affinityKidney cellsBinding sitesII bindingMycoplasma hyorhinisSpecific bindingReceptorsStrains of M. hominisAntagonist DuP 753Fold decreaseSensitive to bacitracin