The proposed effort combines air sampling devices and highly-integrated protein microarrays to permit estimation of multiple protein allergen exposures in a time efficient manner. Portable air sampling devices that fit inside the nostrils and have been used in Australian and European asthma studies will be used for collection of samples in an ongoing study of inner-city New York homes of children (n=200) with increased risk for developing allergy and asthma. Highly multiplexed protein microarrays, allowing parallel assessment of many allergens, integrated onto active complementary metal-oxide-semiconductor (CMOS) substrates will be employed. The use of CMOS allows highly integrated and sensitive devices to be developed because of the immediate proximity of the detector to the sensing electronics. As the commodity technology for microelectronics, such active substrates can be produced at very low cost. An established fluorescence based sensor substrate will be employed for initial studies, augmented by simple microfluidic delivery. Biosensor technology development will include efforts toward real-time measurement capabilities including more complex microfluidic delivery (including pressure activated valves), real-time fluorescence sensing through lifetime-sensitive FRET, and CMOS-integrated mass-based biosensors. The same principles for assessment of allergens in air can be applied to assessment of bacterial and fungal pathogens and their constitutive toxins. These studies have far-reaching implications for acute and chronic measures of public health.

Agency
National Institute of Health (NIH)
Institute
National Institute of Environmental Health Sciences (NIEHS)
Type
Research Project--Cooperative Agreements (U01)
Project #
5U01ES016074-03
Application #
7630565
Study Section
Special Emphasis Panel (ZES1-RAM-D (U1))
Program Officer
Balshaw, David M
Project Start
2007-08-15
Project End
2011-05-31
Budget Start
2009-06-01
Budget End
2011-05-31
Support Year
3
Fiscal Year
2009
Total Cost
$382,838
Indirect Cost
Name
Columbia University (N.Y.)
Department
Public Health & Prev Medicine
Type
Schools of Public Health
DUNS #
621889815
City
New York
State
NY
Country
United States
Zip Code
10032
Johnston, M L; Kymissis, I; Shepard, K L (2009) AN ARRAY OF MONOLITHIC FBAR-CMOS OSCILLATORS FOR MASS-SENSING APPLICATIONS. Dig Tech Papers 2009:1626-1629
Schwartz, David Eric; Gong, Ping; Shepard, Kenneth L (2008) Time-resolved Forster-resonance-energy-transfer DNA assay on an active CMOS microarray. Biosens Bioelectron 24:383-90