Bone damage is a common consequence of trauma, whether caused by traffic accidents, osteoporosis, or sports injuries, and often leads to significant limitations in daily life. Rapid and complete regeneration of such injuries is therefore of great importance. In some cases, treatment poses particular challenges due to complications related to impaired blood supply, systemic conditions, or the advanced age of patients. Surgical interventions and tissue transplantation are often required to achieve successful healing.

The research group led by Regina Brunauer, with clinical guidance from Thomas Nau, is developing new treatment strategies that not only support but actively induce structural bone regeneration. Their goal is to functionalize implants in ways that stimulate the endogenous regenerative capacity of bone tissue. To this end, the team is developing both biological implant surfaces with enhanced functionality and tissue substitute materials, while also seeking to apply insights from the field of regeneration biology, including on the complete regrowth of amputated fingertips (in mammals) and limbs (in salamanders).

Their research focuses include:

  • Novel osteosynthesis and bone substitute materials that combine scaffolds, microstructuring, growth factors, stem cells, and pre-vascularization approaches

  • New stimulation techniques for patients with impaired natural regenerative potential

  • Investigations into mouse digit tip regeneration to explore strategies for structural bone regrowth after complex fractures or amputations

All approaches are evaluated for both efficacy and ethical viability, with a strong emphasis (developed in close collaboration with clinicians) on strategies that support clinical translation into real-world patient care.

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Projects

CeraSilk: Combining ceramic 3D printing and functionalized silk for innovative bone implants
Wiener Wirtschaftsagentur
2025-2028 

PhotoBone: Applicability of photobiomodulation (PBM) on bone regeneration
FFG Industrienahe Dissertation
2025-2028  

INKplant: Ink-based hybrid multimaterial fabrication of next generation implants
Horizon 2020 NMBP
2019 – 2024 

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Selected Publications

Wolff SM, Yu L, Yan M, Brunauer R, Rodriguez M, Garcia DI, Jain A, Kusuma DR, Sherman KM, Dahlstrom CB, Gaddy D, Suva LJ, Dawson LA (2025). Altered digit tip blastema differentiation and bone regeneration in skeletally mature Ts65Dn Down syndrome mice. Bone. 2025 Dec;201:117648. 

Sherman KM, Silveira CJ, Yan M, Yu L, Leon A, Klages K, White LG, Smith HM, Wolff SM, Falck A, Muneoka K, Brunauer R, Gaddy D, Suva LJ, Dawson LA (2025). Male Down syndrome Ts65Dn mice have impaired bone regeneration. Bone. 2025 Mar;192:117374. 
(free PDF)

Frank JK, Kampleitner C, Heimel P, Leinfellner G, Hanetseder D, Sperger S, Frischer A, Schädl B, Tangl S, Lindner C, Gamauf J, Grillari-Voglauer R, O’Brien FJ, Pultar M, Redl H, Hackl M, Grillari J, Marolt Presen D (2025). Circulating miRNAs are associated with successful bone regeneration. Front Bioeng Biotechnol. 2025 Mar 28;13:1527493. 
(free PDF)

Smirnova YD, Hanetseder D, Derigo L, Gasser AS, Vaglio-Garro A, Sperger S, Brunauer R, Korneeva OS, Duvigneau JC, Marolt Presen D, Kozlov AV (2025). Osteosarcoma Cells and Undifferentiated Human Mesenchymal Stromal Cells Are More Susceptible to Ferroptosis than Differentiated Human Mesenchymal Stromal Cells. Antioxidants (Basel). 2025 Feb 6;14(2):189. 
(free PDF)

Marolt Presen D, Goeschl V, Hanetseder D, Ogrin L, Stetco AL, Tansek A, Pozenel L, Bruszel B, Mitulovic G, Oesterreicher J, Zipperle J, Schaedl B, Holnthoner W, Grillari J, Redl H (2024). Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium. Stem Cell Res Ther. 2024 Nov 17;15(1):434.
(free PDF)

Kieler M, Prammer LS, Heller G, Hofmann M, Sperger S, Hanetseder D, Niederreiter B, Komljenovic A, Klavins K, Köcher T, Brunner JS, Stanic I, Oberbichler L, Korosec A, Vogel A, Kerndl M, Hromadová D, Musiejovsky L, Hajto A, Dobrijevic A, Piwonka T, Haschemi A, Miller A, Georgel P, Marolt Presen D, Grillari J, Hayer S, Auger JP, Krönke G, Sharif O, Aletaha D, Schabbauer G, Blüml S (2024). Itaconate is a metabolic regulator of bone formation in homeostasis and arthritis. Ann Rheum Dis. 2024 Oct 21;83(11):1465-1479. 
(free PDF)

Kainz M, Perak S, Stubauer G, Kopp S, Kauscheder S, Hemetzberger J, Martínez Cendrero A, Díaz Lantada A, Tupe D, Major Z, Hanetseder D, Hruschka V, Wolbank S, Marolt Presen D, Mühlberger M, Guillén E (2024). Additive and Lithographic Manufacturing of Biomedical Scaffold Structures Using a Versatile Thiol-Ene Photocurable Resin. Polymers (Basel). 2024 Feb 28;16(5):655. 
(free PDF)

Hanetseder D, Levstek T, Teuschl-Woller AH, Frank JK, Schaedl B, Redl H, Marolt Presen D (2023). Engineering of extracellular matrix from human iPSC-mesenchymal progenitors to enhance osteogenic capacity of human bone marrow stromal cells independent of their age. Front Bioeng Biotechnol. 2023 Aug 2;11:1214019. 
(free PDF)

Dolan CP, Yang TJ, Zimmel K, Imholt F, Qureshi O, Falck A, Gregory J, Mayes M, Ritchie K, Koester H, Daniel B, Yan M, Yu L, Suva LJ, Gaddy D, Dawson LA, Muneoka K, Brunauer R (2022). Epimorphic regeneration of the mouse digit tip is finite. Stem Cell Res Ther. 2022 Feb 7;13(1):62. 
(free PDF)

Brunauer R, Xia IG, Asrar SN, Dawson LA, Dolan CP, Muneoka K (2021). Aging Delays Epimorphic Regeneration in Mice. J Gerontol A Biol Sci Med Sci. 2021 Sep 13;76(10):1726-1733. 

Zimmermann A, Hercher D, Regner B, Frischer A, Sperger S, Redl H, Hacobian A (2020). Evaluation of BMP-2 Minicircle DNA for Enhanced Bone Engineering and Regeneration. Curr Gene Ther. 2020;20(1):55-63. 

Raftery RM, Mencía-Castaño I, Sperger S, Chen G, Cavanagh B, Feichtinger GA, Redl H, Hacobian A, O’Brien FJ (2018). Delivery of the improved BMP-2-Advanced plasmid DNA within a gene-activated scaffold accelerates mesenchymal stem cell osteogenesis and critical size defect repair. J Control Release. 2018 Aug 10;283:20-31.