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https://doi.org/10.26512/2016....
Doctoral thesis . 2021 . Peer-reviewed
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Estudos estruturais e de interação de novos inibidores e ativadores da tirosinase

Authors: Pires, Diego Arantes Teixeira;

Estudos estruturais e de interação de novos inibidores e ativadores da tirosinase

Abstract

Tese (doutorado)—Universidade de Brasília, Instituto de Química, Programa de Pós-Graduação em Tecnologias Química e Biológica, 2016. ; A tirosinase é uma enzima oxidase que contém cobre no sítio ativo e pode ser encontrada em plantas, fungos e animais. Em animais, a tirosinase está diretamente envolvida na biossíntese da melanina, sendo que a produção anormal deste pigmento pode levar a uma série de problemas dermatológicos, como hiperpigmentação, hipopigmentação, age spot, melasma, câncer de pele, dentre outros. Por esses motivos, a busca por novos inibidores e ativadores dessa enzima é de grande interesse para a medicina, indústria alimentícia e também para a agricultura. Nesse sentido, estudar o modo de interação de novos inibidores e ativadores com a tirosinase é de fundamental importância para o planejamento de novas drogas mais eficientes. Esse estudo de interação ligante-enzima é feito principalmente por Ressonância Magnética Nuclear (RMN), envolvendo análises de variações de deslocamento químico, tempos de relaxação, coeficientes de difusão e técnicas como STD e INPHARMA, além de Química Computacional. Neste trabalho, novos compostos foram sintetizados e suas caracterizações feitas por infravermelho, espectrometria de massa e RMN. Após testes biológicos, alguns desses compostos foram selecionados para estudos de interação com a tirosinase por RMN, bem como por cálculos mecânico-quânticos e de docking molecular. Os resultados alcançados permitem vislumbrar os modos de interação de ligantes com essa enzima, dando um passo fundamental para o desenho racional de novos fármacos. ; Tyrosinase is an oxidase enzyme that contains copper in the active site and it can be found in plants, fungi and animals. In animals, tyrosinase is directly involved in the biosynthesis of melanin. Abnormal production of this pigment can lead to many dermatologic problems, such as hyperpigmentation, hypopigmentation, age spot, melasma, skin cancer, among others. For this reason, there is a special interest in finding new inhibitors ...

Country
Brazil
Related Organizations
Keywords

Melanina, Ressonância magnética nuclear, Tirosinase

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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bronze
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