journal article·2026-06-01Open access

3D printed 13-93B3 borate bioactive glass/hydroxypropyl methyl cellulose/gelatin scaffolds with cerium oxide submicrometric particles for potential bone regeneration

Sezgi İyigün, Alper Güven, Caner Aslan, Yasemin İlayda Albayrak, Ahmet Katı, Duygu Ege, Aldo R Boccaccini

Biomedical Materials· Volume 21· Issue 3

Abstract

Abstract In this study, a novel hydroxypropyl methyl cellulose (HPMC)/gelatin composite scaffold was prepared by incorporating 13–93B3 borate bioactive glass (BBG) microparticles and cerium oxide (CeO₂) submicrometric particles as a discrete phase, enabling higher ceria loadings without disrupting the bioactive glass chemistry. Composite hydrogel inks containing 5 wt% BBG microparticles and up to 20 wt% submicrometric CeO 2 particles were successfully extrusion-printed into porous scaffolds with interconnected pore architecture. CeO 2 incorporation preserved printability and mechanical strength while significantly enhancing scaffold deformation ability. Degradation behavior was tunable, with BBG microparticles reducing swelling and CeO 2 submicrometric particles modulating water uptake and pH evolution. BBG microparticles and CeO 2 submicrometric particles synergistically promoted apatite formation following 7 d of SBF incubation. In vitro studies using MC3T3-E1 pre-osteoblasts confirmed high cytocompatibility and Alizarin red study showed enhanced mineralization in CeO 2 -containing scaffolds. Additionally, BBG and CeO 2 incorporated scaffolds exhibited strong antibacterial activity against S. aureus and E. coli . Overall, this multifunctional scaffold platform demonstrates promise for bone tissue engineering applications.
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Research context

OpenAlex topics: Bone Tissue Engineering Materials · Advanced Nanomaterials in Catalysis · Aerogels and thermal insulation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Bogazici University

Marmara University

Şişecam Science Technology and Design Center

Experimental Medicine Research and Application Center Validebag Research Park Istanbul

Bogazici University Center for Targeted Therapy Technologies

Institute of Biomaterials, University of Erlangen-Nuremberg

Funding

TUSEB (the Health Institutes of Türkiye · Bilimsel AraütÜrma Projeleri Birimi, Boğaziçi üniversitesi · Bilimsel Araştırma Projeleri, Boğaziçi üniversitesi

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