Detection of changes related with breast cancer using charge sensors or mass sensors coupled to DNA monolayers

• Grant number: 13/26133-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: April 01, 2014
• End date: May 31, 2017
• Field of knowledge: Engineering - Electrical Engineering - Electrical, Magnetic and Electronic Measurements, Instrumentation
• Principal Investigator: Marcelo Mulato
• Grantee: Marina Ribeiro Batistuti Sawazaki
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Associated research grant: 12/22820-7 - The sensitive label free detection of disease markers using electrochemical immittance, AP.TEM
• Associated scholarship(s): 15/14404-1 - Detection of changes related to breast cancer using charge sensors or mass sensors coupled to DNA monolayers, BE.EP.DR 15/14403-5 - Detection of changes related to breast cancer using charge sensors or mass sensors coupled to DNA monolayers, BE.EP.DR

Abstract

Unidimensional structures of aromatic crystals coupling have as property transporting charge. It has been proposed that the DNA structure might have similar behavior due to its structural similarity with these crystals. Your role as a promising material in electronic devices immediately generated conflicting results, ranging from insulating to superconducting. Barton and his colleagues were crucial to elucidate the mechanisms of transport depending on the size and sequence of the DNA strand. From this understanding was possible to initiate the development of biosensors. The DNA adhered to a transducer forms a self-assembled monolayer. Similarly, the pairing of two complementary sequences allows the construction of sensors with high selectivity and the oxidation of guanine bases also allows the use of electrochemical techniques to the study, characterization of this type of biosensor. Based on the application of SAM in DNA sensors, we propose in this project the development of charge sensor and mass sensor through the field effect transistor with an extended port (also the English extended gate field effect transistor - EGFET) and microbalance quartz crystal. Our focus will be to detect different sequences related to changes bases due to breast cancer.

Scientific publications

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

FERREIRA, DAISY CAMARGO; SAWAZAKI, MARINA RIBEIRO BATISTUTI; BACHOUR JR, BASSAM; MULATO, MARCELO. Electrochemical capacitance-based aptasensor for HER2 detection. BIOMEDICAL MICRODEVICES, v. 27, n. 1, p. 9-pg., 2025-03-01. (13/26133-7, 17/13161-3, 17/24201-6)

BACHOUR JUNIOR, BASSAM; BATISTUTI, MARINA RIBEIRO; PEREIRA, ALINE SANCHES; DE SOUSA RUSSO, ELISA MARIA; MULATO, MARCELO. Electrochemical aptasensor for NS1 detection: Towards a fast dengue biosensor. Talanta, v. 233, OCT 1 2021. (13/26133-7, 17/24201-6)

FERREIRA, DAISY C.; BATISTUTI, MARINA R.; BACHOUR JUNIOR, BASSAM; MULATO, MARCELO. Aptasensor based on screen-printed electrode for breast cancer detection in undiluted human serum. BIOELECTROCHEMISTRY, v. 137, FEB 2021. (17/13161-3, 13/26133-7, 17/24201-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SAWAZAKI, Marina Ribeiro Batistuti. Detecção de alterações relacionadas ao câncer de mama através de sensores de carga ou de massa acoplados a monocamadas de DNA. 2017. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (PCARP/BC) Ribeirão Preto.