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International Journal of Bioprinting Redefined collagen inks in cartilage printing

of Plant Physiology and Genetics, Bulgarian Academy of 2. Sagi I, Afratis NA. Collagen. Vol 1944. In: Sagi I, Afratis NA,
Sciences, for her assistance with SDS-PAGE analysis. eds. New York, NY: Springer; 2019.
doi: 10.1007/978-1-4939-9095-5
Funding 3. Osidak EO, Kozhukhov VI, Osidak MS, Domogatsky SP.
This work was supported by the Bulgarian National Collagen as bioink for bioprinting: a comprehensive review.
Int J Bioprint. 2024;6(3):270.
Innovation Fund (grant number: 13IF-02-9/07.12.2022).
doi: 10.18063/ijb.v6i3.270
Conflict of interest 4. Li Z, Ruan C, Niu X. Collagen-based bioinks for regenerative
medicine: fabrication, application and prospective. Med Nov
The authors declared the following potential conflicts Technol Devices. 2023;17(37):100211.
of interest concerning the research, authorship, and/or doi: 10.1016/j.medntd.2023.100211
publication of this article: M.R. is the majority owner and 5. Stepanovska J, Supova M, Hanzalek K, Broz A, Matejka R.
Managing Director of MatriChem, Ltd., which markets the Collagen bioinks for bioprinting: a systematic review of
collagen used in this study. A.V., H.P., and A.G. are MatriChem hydrogel properties, bioprinting parameters, protocols,
employees. No conflicts of interest concerning the research, and bioprinted structure characteristics. Biomedicines.
authorship, and/or publications exist for all other authors. 2021;9(9):1137.
doi: 10.3390/biomedicines9091137
Author contributions 6. Marques CF, Diogo GS, Pina S, Oliveira JM, Silva TH, Reis
Conceptualization: Murad Redzheb, Yordan Sbirkov, RL. Collagen-based bioinks for hard tissue engineering
Victoria Sarafian applications: a comprehensive review. J Mater Sci Mater
Formal analysis: Murad Redzheb, Yordan Sbirkov Med. 2019;30(3):32.
doi: 10.1007/s10856-019-6234-x
Funding Acquisition: Murad Redzheb, Yordan Sbirkov,
Victoria Sarafian 7. Li Y, Asadi A, Monroe MR, Douglas EP. pH effects on
Investigation: Murad Redzheb, Yordan Sbirkov, Atanas collagen fibrillogenesis in vitro: electrostatic interactions and
Valev, Vasil Dzharov, Hristi Petrova, Tatyana phosphate binding. Mater Sci Eng C. 2009;29(5):1643-1649.
doi: 10.1016/j.msec.2009.01.001
Damyanova, Ani Georgieva
Project Administration: Murad Redzheb, Yordan Sbirkov, 8. Rezabeigi E, Griffanti G, Nazhat SN. Effect of fibrillization
Victoria Sarafian ph on gelation viscoelasticity and properties of biofabricated
Writing – Original Draft: Murad Redzheb, Yordan Sbirkov dense collagen matrices via gel aspiration-ejection. Int J Mol
Writing – Review & Editing: Murad Redzheb, Yordan Sci. 2023;24(4):3889.
doi: 10.3390/ijms24043889
Sbirkov, Victoria Sarafian
9. Kalbitzer L, Pompe T. Fibril growth kinetics link buffer
Ethics approval and consent to participate conditions and topology of 3D collagen I networks. Acta
Biomater. 2018;67:206-214.
Not applicable. doi: 10.1016/j.actbio.2017.11.051

Consent for publication 10. Li Y, Douglas EP. Effects of various salts on structural
polymorphism of reconstituted type I collagen fibrils.
Not applicable. Colloids Surf B Biointerfaces. 2013;112:42-50.
doi: 10.1016/j.colsurfb.2013.07.037
Availability of data 11. Achilli M, Mantovani D. Tailoring mechanical properties of
collagen-based scaffolds for vascular tissue engineering: the
Sequencing data is available on the Gene Expression effects of pH, temperature and ionic strength on gelation.
Ombinus (GEO) under accession number GSE271638. Polymers (Basel). 2010;2(4):664-680.
(https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc= doi: 10.3390/polym2040664
GSE271638).
12. Stamov DR, Stock E, Franz CM, Jähnke T, Haschke
References H. Imaging collagen type I fibrillogenesis with high
spatiotemporal resolution. Ultramicroscopy. 2015;149:86-94.
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Cosgriff-Hernandez E. Biomedical applications of additive 13. Gobeaux F, Mosser G, Anglo A, et al. Fibrillogenesis in
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Volume 10 Issue 6 (2024) 513 doi: 10.36922/ijb.4566