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dc.contributor.authorKryeziu, Kushtrim
dc.contributor.authorMoosavi, Seyed Hossein
dc.contributor.authorBergsland, Christian Holst
dc.contributor.authorGuren, Marianne
dc.contributor.authorEide, Peter Andreas Wold
dc.contributor.authorTotland, Max
dc.contributor.authorLassen, Kristoffer
dc.contributor.authorAbildgaard, Andreas
dc.contributor.authorNesbakken, Arild
dc.contributor.authorSveen, Anita
dc.contributor.authorLothe, Ragnhild Adelheid
dc.date.accessioned2021-12-23T08:07:47Z
dc.date.available2021-12-23T08:07:47Z
dc.date.issued2021-09-08
dc.description.abstractTumor heterogeneity is a primary cause of treatment failure. However, changes in drug sensitivity over time are not well mapped in cancer. Patient-derived organoids (PDOs) may predict clinical drug responses ex vivo and ofer an opportunity to evaluate novel treatment strategies in a personalized fashion. Here we have evaluated spatio-temporal functional and molecular dynamics of fve PDO models established after hepatic re-resections and neoadjuvant combination chemotherapies in a patient with microsatellite stable and KRAS mutated metastatic rectal cancer. Histopathological diferentiation phenotypes of the PDOs corresponded with the liver metastases, and ex vivo drug sensitivities generally refected clinical responses and selection pressure, assessed in comparison to a reference data set of PDOs from metastatic colorectal cancers. PDOs from the initial versus the two recurrent metastatic settings showed heterogeneous cell morphologies, protein marker expression, and drug sensitivities. Exploratory analyses of a drug screen library of 33 investigational anticancer agents showed the strongest ex vivo sensitivity to the SMAC mimetic LCL161 in PDOs of recurrent disease compared to those of the initial metastasis. Functional analyses confrmed target inhibition and apoptosis induction in the LCL161 sensitive PDOs from the recurrent metastases. Gene expression analyses indicated an association between LCL161 sensitivity and tumor necrosis factor alpha signaling and RIPK1 gene expression. In conclusion, LCL161 was identifed as a possible experimental therapy of a metastatic rectal cancer that relapsed after hepatic resection and standard systemic treatment.en_US
dc.identifier.citationKryeziu, Moosavi, Bergsland, Guren, Eide, Totland MZ, Lassen, Abildgaard, Nesbakken, Sveen, Lothe. Increased sensitivity to SMAC mimetic LCL161 identified by longitudinal ex vivo pharmacogenomics of recurrent, KRAS mutated rectal cancer liver metastases. Journal of Translational Medicine. 2021;19:384:1-11en_US
dc.identifier.cristinIDFRIDAID 1936610
dc.identifier.doi10.1186/s12967-021-03062-3
dc.identifier.issn1479-5876
dc.identifier.urihttps://hdl.handle.net/10037/23490
dc.language.isoengen_US
dc.publisherBMCen_US
dc.relation.journalJournal of Translational Medicine
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRIMEDBIO/250993/Norway/Modeling tumor heterogeneity in colorectal cancer management//en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRIMEDBIO/287899/Norway/Catching-up with metastatic colorectal cancer heterogeneity//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Medical disciplines: 700::Clinical medical disciplines: 750en_US
dc.subjectVDP::Medisinske Fag: 700::Klinisk medisinske fag: 750en_US
dc.titleIncreased sensitivity to SMAC mimetic LCL161 identified by longitudinal ex vivo pharmacogenomics of recurrent, KRAS mutated rectal cancer liver metastasesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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