Banca de QUALIFICAÇÃO: ANDERSON FELIPE JÁCOME DE FRANÇA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ANDERSON FELIPE JÁCOME DE FRANÇA
DATA : 27/07/2018
HORA: 10:00
LOCAL: Sala de Reuniões do Centro de Biociências
TÍTULO:

GLOBULIN PROTEIN OF SEEDS OF Lachesodendron viridiforum: AN

ALTERNATIVE FOR COMBATING MICROBIAL AGENTS AND TUMOR CELLS

PALAVRAS-CHAVES:

Lachesiodendron viridiflorum, proteins, peptides, multifunctional,

promiscuous.

PÁGINAS: 72
GRANDE ÁREA: Ciências Biológicas
ÁREA: Bioquímica
RESUMO:

Plant seeds are reservoirs of molecules with great potential for elaboration of bioproducts and for this reason a special attention has been directed in the search of bioactive proteins with antimetabolic action and pharmacological properties. Some seeds present proteins and peptides that alone play multiple roles, such as interactions with membranes of bacteria causing disruption, fungicidal and antitumor activity, in the recruitment of macrophages and neutrophils an action defined as immunomodulation and hemolytic activity. A prospection of proteins with multifunctional activity was carried out in four final strata of the Fabaceae family: Senna spectabilis (Cássia-do-nordeste), Anadenanthera colubrina (Angico), Adenanthera pavonina (Carolina) e Lachesiodendron viridiflorum (Jurema-Juquiri). A protein was found in L. viridiflorum, called LvP. When analyzed by SDS-PAGE, it had a molecular mass of approximately 17 kDa, with high hemolytic activity and cytotoxic activity against mononuclear cells. It did not present toxic activity to 3T3 cell line. However, when confronted with the HeLa, Hep G2, HT29, B16, A-375 and A2058 tumor lines, a high inhibition rate of cell viability was observed at low contractions. The same was observed for fungi Candida albicans, C. tropicalis, C. dubliniensis, C. glabrata e C. parapilosis. However, when tested against pathogenic bacteria Staphylococcus aureus, Escherichia coli and Methicillin-resistant Staphylococcus aureus - MRSA, no bactericidal activity was detected at the concentrations tested. When LvP was associated with the reference antibiotics, and tested again against bacteria, it was able to reduce the antibiotic MIC up to one dilution for all three species, thus characterizing a synergistic activity of LvP. Based on the data obtained, the isolated LvP corresponds to a multifunctional protein structure, and its anti-tumor, antimicrobial, fungicide and bactericidal properties, need to be better investigated so that its biotechnological potential is explored.

MEMBROS DA BANCA:
Presidente - 2195251 - HUGO ALEXANDRE DE OLIVEIRA ROCHA
Externo ao Programa - 2832746 - MONIQUE GABRIELA DAS CHAGAS FAUSTINO ALVES
Externo à Instituição - TICIANA MARIA LUCIO DE AMORIM - UFPI