title: Array-based disease diagnostics using lipid/polydiacetylene vesicles encapsulated in a sol-gel matrix.
abstract: We demonstrate a novel array-based diagnostic platform comprising lipid/polydiacetylene (PDA) vesicles embedded within a transparent silica-gel matrix. The diagnostic scheme is based upon the unique chromatic properties of PDA, which undergoes blue-red transformations induced by interactions with amphiphilic or membrane-active analytes. We show that constructing a gel matrix array hosting PDA vesicles with different lipid compositions and applying to blood plasma obtained from healthy individuals and from patients suffering from disease, respectively, allow distinguishing among the disease conditions through application of a simple machine-learning algorithm, using the colorimetric response of the lipid/PDA/gel matrix as the input. Importantly, the new colorimetric diagnostic approach does not require a priori knowledge on the exact metabolite compositions of the blood plasma, since the concept relies only on identifying statistically significant changes in overall disease-induced chromatic response. The chromatic lipid/PDA/gel array-based "fingerprinting" concept is generic, easy to apply, and could be implemented for varied diagnostic and screening applications.
authors: The Ilse Katz Institute, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.
authors: S
authors: S
authors: Kolusheva
authors: R
authors: R
authors: Yossef
authors: A
authors: A
authors: Kugel
authors: M
authors: M
authors: Katz
authors: R
authors: R
authors: Volinsky
authors: M
authors: M
authors: Welt
authors: U
authors: U
authors: Hadad
authors: V
authors: V
authors: Drory
authors: M
authors: M
authors: Kliger
authors: E
authors: E
authors: Rubin
authors: A
authors: A
authors: Porgador
authors: R
authors: R
authors: Jelinek
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000690:Amyotrophic Lateral Sclerosis / Q000097:blood / Q000175:diagnosis*; D002214:Capsules; D003124:Colorimetry / Q000295:instrumentation*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000097:blood / Q000175:diagnosis*; D008055:Lipids / Q000737:chemistry*; D008297:Male; D008875:Middle Aged; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry*; D058428:Silica Gel / Q000737:chemistry*; D055815:Young Adult
chemical_list: D002214:Capsules; D008055:Lipids; D000078789:Polyacetylene Polymer; D011108:Polymers; D053279:Polyynes; C082361:polydiacetylene; D058428:Silica Gel