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Evaluation of the Therapeutic Potential of a HER3-Binding Affibody Construct TAM-HER3 in Comparison with a Monoclonal Antibody, Seribantumab
Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Theranostics.ORCID-id: 0000-0001-6120-2683
KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Prot Sci, SE-10691 Stockholm, Sweden.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Theranostics.
KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Prot Sci, SE-10691 Stockholm, Sweden.
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2018 (Engelska)Ingår i: Molecular Pharmaceutics, ISSN 1543-8384, E-ISSN 1543-8392, Vol. 15, nr 8, s. 3394-3403Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Human epidermal growth factor receptor type 3 (HER3) is recognized to be involved in resistance to HER targeting therapies. A number of HER3-targeting monoclonal antibodies are under clinical investigation as potential cancer therapeutics. Smaller high-affinity scaffold proteins are attractive non-Fc containing alternatives to antibodies. A previous study indicated that anti-HER3 affibody molecules could delay the growth of xenografted HER3-positive tumors. Here, we designed a second-generation HER3-targeting construct (TAM-HER3), containing two HER3-specific affibody molecules bridged by an albumin-binding domain (ABD) for extension of blood circulation. Receptor blocking activity was demonstrated in vitro. In mice bearing BxPC-3 xenografts, the therapeutic efficacy of TAM-HER3 was compared to the HER3-specific monoclonal antibody seribantumab (MM-121). TAM-HER3 inhibited heregulin-induced phosphorylation in a panel of HER3-expressing cancer cells and was found to be equally as potent as seribantumab in terms of therapeutic efficacy in vivo and with a similar safety profile. Median survival times were 60 days for TAM-HER3, 54 days for seribantumab, and 41 days for the control group. No pathological changes were observed in cytopathological examination. The multimeric HER3-binding affibody molecule in fusion to ABD seems promising for further evaluation as candidate therapeutics for treatment of HER3-overexpressing tumors.

Ort, förlag, år, upplaga, sidor
AMER CHEMICAL SOC , 2018. Vol. 15, nr 8, s. 3394-3403
Nyckelord [en]
affibody molecule, HER3, targeting therapy, preclinical
Nationell ämneskategori
Biokemi och molekylärbiologi
Identifikatorer
URN: urn:nbn:se:uu:diva-362844DOI: 10.1021/acs.molpharmaceut.8b00393ISI: 000441476800049PubMedID: 29995421OAI: oai:DiVA.org:uu-362844DiVA, id: diva2:1255528
Forskningsfinansiär
Vetenskapsrådet, 621-2012-5236Vetenskapsrådet, 2015-02509Vetenskapsrådet, 2015-02353VINNOVA, 2016-04060Cancerfonden, CAN2016-463Cancerfonden, CAN2014-474Cancerfonden, CAN 2017/425Cancerfonden, CAN2015/350Tillgänglig från: 2018-10-12 Skapad: 2018-10-12 Senast uppdaterad: 2018-10-12Bibliografiskt granskad

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Orlova, AnnaRinne, Sara S.Rosestedt, MariaAtterby, ChristinaFrejd, Fredrik Y.Tolmachev, Vladimir

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Orlova, AnnaRinne, Sara S.Rosestedt, MariaAtterby, ChristinaFrejd, Fredrik Y.Tolmachev, Vladimir
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Science for Life Laboratory, SciLifeLabTheranosticsMedicinsk strålningsvetenskap
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