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Influence of Molecular Design on the Targeting Properties of ABD-Fused Mono- and Bi-Valent Anti-HER3 Affibody Therapeutic Constructs
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Medicinsk strålningsvetenskap. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi.
KTH Royal Inst Technol, Dept Prot Sci, Sch Engn Sci Chem Biotechnol & Hlth, S-10691 Stockholm, Sweden.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Theranostics.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Medicinsk strålningsvetenskap.ORCID-id: 0000-0002-4778-3909
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2018 (engelsk)Inngår i: CELLS, ISSN 2073-4409, Vol. 7, nr 10, artikkel-id 164Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Overexpression of human epidermal growth factor receptor type 3 (HER3) is associated with tumour cell resistance to HER-targeted therapies. Monoclonal antibodies (mAbs) targeting HER3 are currently being investigated for treatment of various types of cancers. Cumulative evidence suggests that affibody molecules may be appropriate alternatives to mAbs. We previously reported a fusion construct (3A3) containing two HER3-targeting affibody molecules flanking an engineered albumin-binding domain (ABD 035) included for the extension of half-life in circulation. The 3A3 fusion protein (19.7 kDa) was shown to delay tumour growth in mice bearing HER3-expressing xenografts and was equipotent to the mAb seribantumab. Here, we have designed and explored a series of novel formats of anti-HER3 affibody molecules fused to the ABD in different orientations. All constructs inhibited heregulin-induced phosphorylation in HER3-expressing BxPC-3 and DU-145 cell lines. Biodistribution studies demonstrated extended the half-life of all ABD-fused constructs, although at different levels. The capacity of our ABD-fused proteins to accumulate in HER3-expressing tumours was demonstrated in nude mice bearing BxPC-3 xenografts. Formats where the ABD was located on the C-terminus of affibody binding domains (3A, 33A, and 3A3) provided the best tumour targeting properties in vivo. Further development of these promising candidates for treatment of HER3-overexpressing tumours is therefore justified.

sted, utgiver, år, opplag, sider
2018. Vol. 7, nr 10, artikkel-id 164
Emneord [en]
HER3, affibody, molecular design, therapy
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-369758DOI: 10.3390/cells7100164ISI: 000448818800022PubMedID: 30314301OAI: oai:DiVA.org:uu-369758DiVA, id: diva2:1271581
Forskningsfinansiär
VINNOVA, 2016-04060Swedish Research Council, 2015-02353Swedish Research Council, 621-2012-5236Swedish Research Council, 2015-02509
Merknad

The first two authors contributed equally to this work.

Tilgjengelig fra: 2018-12-17 Laget: 2018-12-17 Sist oppdatert: 2018-12-17bibliografisk kontrollert

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