Biotechnological potential and phenotypic and molecular characterization of Salmonella enterica mutants

• Grant number: 17/10051-2
• Support Opportunities: Regular Research Grants
• Duration: October 01, 2017 - May 31, 2020
• Field of knowledge: Biological Sciences - Microbiology - Applied Microbiology
• Principal Investigator: Marcelo Brocchi
• Grantee: Marcelo Brocchi
• Host Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Previous results from our group indicated that null-mutants of Salmonella enterica for genes encoding Naps (Nucleoid-associated proteins) are attenuated and able to induce protection in the murine model. Data also indicated that some strains presented antitumor properties. Altogether, those results indicate an important biological role of NAPs in S. enterica. Therefore, the general objective of this project is to further investigate the biological roles of some NAPs in S. enterica and also to explore the biotechnological potential attenuated Salmonella strains as vaccines. The specific objectives are: (1) Elucidate the biological role of the NAP YbaB in S. enterica Typhimurium by phenotypic, gene expression and transcriptome analyses; (2) Characterize a strain of S. enterica Typhimurium DstpA regarding the attenuation of virulence in the murine model and a possible role of this Nap in biofilm formation; (3) Characterize the IHF (Integration-host factor) mutants of S. enterica Typhimurium regarding colonization and immunogenicity in avian; (4) Characterize the IHF (Integration-host factor) mutants of S. enterica Typhimurium regarding antitumoral activity in the murine model; (5) Construction of a recombinant attenuated S. enterica strain (RASV) carrying a DNA vaccine for ZIKV virus. This Project in intended to be conducted in collaboration with groups abroad. (AU)

Scientific publications

(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)

PARDINI GONTIJO, MARCO TULIO; PEREIRA VIDIGAL, PEDRO MARCUS; SOTO LOPEZ, MARYORIS ELISA; BROCCHI, MARCELO. Bacteriophages that infect Gram-negative bacteria as source of signal-arrest-release motif lysins. Research in Microbiology, v. 172, n. 2, MAR 2021. (17/10051-2, 20/01535-9)

THAKUR, ABHIMANYU; PARRA, DIANA CAROLINA; MOTALLEBNEJAD, PEDRAM; BROCCHI, MARCELO; CHEN, HUANHUAN JOYCE. xosomes: Small vesicles with big roles in cancer, vaccine development, and therapeutic. IOACTIVE MATERIAL, v. 10, p. 281-294, APR 2022. (17/10051-2)

PARDINI GONTIJO, MARCO TULIO; JORGE, GENESY PEREZ; BROCCHI, MARCELO. Current Status of Endolysin-Based Treatments against Gram-Negative Bacteria. ANTIBIOTICS-BASEL, v. 10, n. 10, OCT 2021. (20/01535-9, 17/10051-2)