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Streckfuss-Bömeke, K.

Publications and source records attributed to Streckfuss-Bömeke, K..

2 recordsLinked to original sources

A novel single-cell RNA-sequencing platform and its applicability connecting genotype to phenotype in ageing-disease

Advances in single cell multi-omics analysis such as the ability of a genotype to show phenotypic diversity lead to a comprehensive understanding of cellular events in human diseases. The cardinal feature to access this information is the technology used for single-cell isolation, barcoding, and sequencing. While numerous platforms have been reported for single-cell RNA-sequencing, technical enhancements are needed in terms of highly purified single cell selection, cell documentation or limitations in cell sizing and chemistry. In this study, we present a novel high-throughput platform using a full-length RNA-sequencing approach that offers substantial technical improvements of all parameters. We applied this platform to dermal fibroblasts derived from six patients with different segmental progeria syndromes and defined phenotype-associated pathway signatures and variant-associated expression modifiers. These results validate the applicability of our platform to highlight genotype-expression relationships for molecular phenotyping in ageing disorders.

genomics↗

Doxorubicin induces cardiotoxicity in a pluripotent stem cell model of aggressive B cell lymphoma cancer patients

Cancer therapies have been shown to induce cardiovascular complications. The aims of this study were to establish an in vitro induced pluripotent stem cell model (iPSC) of anthracycline-induced cardiotoxicity (ACT) from patients with an aggressive form of cancer. ACT-iPSC-CM generated from individuals with CD20+ B-cell lymphoma cancer who had received high doses of DOX and suffered cardiac dysfunction were observed to be persistently more susceptible to DOX toxicity compared to control-iPSC-CM. ACT-iPSC-CM exhibited increased DOX-dependent disorganized myofilament structure and cell death, as well as higher reactive oxygen species (ROS) compared to controls. Importantly, analysis of engineered heart muscle (EHM) from ACT-iPSC-CM showed an impaired DOX-dependent mechanical functionality. Transcriptome profiles of EHM are in line with a disturbed adjustment to DOX-dependent alteration of Ca2+ homeostasis in ACT-iPSC-CM. Furthermore, genetic variants in different cardiac key regulators were uncovered. In conclusion, we developed the first human iPSC-CM and EHM model of DOX-induced cardiac dysfunction in patients with B-cell lymphoma. Our results suggest that DOX-related stress resulted in decreased contractile activity and finally in heart failure in ACT patients. Brief summaryDevelopment of the first human iPSC-CM model of DOX-induced cardiac dysfunction in patients with aggressive B cell lymphoma and high-dose DOX treatment.

cell biology↗