Bioactivity and bactericidal action of 3D printed PLA-TCP scaffolds modified with SiO2, ZnO and CeO2 applied for bone tissue engineering

• Grant number: 21/11538-8
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: May 01, 2022
• End date: April 30, 2023
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Luiz Antonio Pessan
• Grantee: Samarah Vargas Harb
• Supervisor: Sudipta Seal
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Institution abroad: University of Central Florida (UCF), United States
• Associated to the scholarship: 18/26060-3 - Bioactive and bactericidal scaffolds for bone regeneration via 3D printing, BP.PD

Abstract

Using additive manufacturing, we have produced scaffolds that mimic the natural extracellular matrix of bone (architecture, biochemistry and mechanical properties) and act as temporary molds to guide the regeneration of bone. A composite matrix composed of poly(lactic acid) (PLA)-tricalcium ²-phosphate (TCP) (90-10 wt%) have been modified with 1, 5 and 10 wt% of SiO2, ZnO and CeO2 to enhance the material's bioactivity, to promote the differentiation of stem cells towards osteoblasts and to impart bactericidal property. Filaments were prepared in the melted state using a twin-screw extruder and used to print scaffolds by fused filament fabrication (FFF). Both filaments and scaffolds have been characterized in the Department of Materials Engineering (DEMa-UFSCar), in relation to their structural, thermal, rheological and mechanical behavior, as presented in the past reports. Some initial biological assays have been performed in the Department of Physiological Sciences-UFSCar. During the internship at the University of Central Florida (UCF), the biological characterization with cell and bacteria will be deeper investigated by an extensive number of techniques available at Professor Sudipta Seal' laboratory, as programmed in the initial research project. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

HARB, SAMARAH V.; KOLANTHAI, ELAYARAJA; BACKES, EDUARDO H.; BEATRICE, CESAR A. G.; PINTO, LEONARDO A.; NUNES, ANA CAROLINA C.; SELISTRE-DE-ARAUJO, HELOISA S.; COSTA, LIDIANE C.; SEAL, SUDIPTA; PESSAN, LUIZ ANTONIO. Effect of Silicon Dioxide and Magnesium Oxide on the Printability, Degradability, Mechanical Strength and Bioactivity of 3D Printed Poly (Lactic Acid)-Tricalcium Phosphate Composite Scaffolds. TISSUE ENGINEERING AND REGENERATIVE MEDICINE, v. 21, n. 2, p. 20-pg., 2023-10-19. (18/26060-3, 17/09609-9, 19/27415-2, 17/11366-7, 21/11538-8)

BRAZ, ALVARO G.; HARB, SAMARAH, V; TRENTIN, ANDRESSA; KOLANTHAI, ELAYARAJA; NURMELA, ASTA; PULCINELLI, SANDRA H.; PAKARINEN, JANNE; SEAL, SUDIPTA; SANTILLI, CELSO, V. Exploring lignin potential on polyurethane-silica hybrid coatings tribological, anticorrosive and bactericidal properties. Progress in Organic Coatings, v. 198, p. 13-pg., 2024-10-29. (21/11538-8, 23/09958-4, 23/01616-7, 18/26060-3)

MAREGA, FELIPPE MIGLIATO; KLOK, LARISSA ALINE; STEFFEN, TERESA TROMM; CUNHA, DANIEL A. L. V.; HARB, SAMARAH V.; KOLANTHAI, ELAYARAJA; SEAL, SUDIPTA; BECKER, DANIELA; PESSAN, LUIZ ANTONIO; COSTA, LIDIANE CRISTINA. Development of surface-treated poly(lactic acid)/zinc oxide biocomposites for 3D printing in bone tissue engineering. Journal of Applied Polymer Science, v. 141, n. 38, p. 16-pg., 2024-07-08. (18/26060-3, 17/09609-9, 19/27415-2, 17/11366-7, 21/11538-8, 22/03157-7)

PINTO, LEONARDO ALVES; BACKES, EDUARDO HENRIQUE; HARB, SAMARAH VARGAS; PINTO, GABRIEL MATHEUS; DA CUNHA, DANIEL APARECIDO LOPES VIEIRA; ANDRADE, RICARDO JORGE ESPANHOL; FECHINE, GUILHERMINO JOSE MACEDO; SELISTRE-DE-ARAUJO, HELOISA SOBREIRO; COSTA, LIDIANE CRISTINA; PESSAN, LUIZ ANTONIO. Shape memory thermoplastic polyurethane/polycaprolactone blend and composite with hydroxyapatite for biomedical application. Journal of Materials Research, v. 39, n. 1, p. 17-pg., 2023-10-25. (21/11538-8, 18/26060-3, 20/11496-0)