J 2005

Piezoelectric immunosensor for Francisella tularensis detection using immunoglobulin M in a limiting dilution

POHANKA, Miroslav and Petr SKLÁDAL

Basic information

Original name

Piezoelectric immunosensor for Francisella tularensis detection using immunoglobulin M in a limiting dilution

Name in Czech

Piezoelektrický imunosensor pro detekci Franciselly tularensis použitím imunoglobulinu M v limitním ředění

Authors

POHANKA, Miroslav (203 Czech Republic) and Petr SKLÁDAL (203 Czech Republic, guarantor)

Edition

Analytical Letters, New York, Marcel Dekker, 2005, 0003-2719

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.036

RIV identification code

RIV/00216224:14310/05:00013671

Organization unit

Faculty of Science

UT WoS

000227702200006

Keywords in English

piezoelectric immunosensor; tularemia; biowarfare agent
Změněno: 7/6/2005 16:07, prof. RNDr. Petr Skládal, CSc.

Abstract

V originále

Francisella tularensis is a pathogenic bacterium causing the serious disease tularemia and is potentially considered as a bioweapon agent. The piezoelectric immunosensor for F. tularensis (Ft) assay was developed using the quartz crystal microbalance (QCM) with covalently immobilized Ft antigen. Samples containing the bacterium were preincubated with a highly diluted anti-Ft IgM, and the mixture was injected to the flow cell containing the immunosensor. IgM alone as well as Ft cells alone were not giving any response, and therefore, it is assumed that the sensor responded to the IgM(x)-Ft(y) complex formed during the preincubation step. The effects of pH, time of preincubation, and IgM concentration were tested. This rapid method allowed us to detect 5 (.) 10(6) Ft cells/mL. RSD of measurements was near 1%. The total time of one analysis was 35 min, and one sensor was used for more than 30 times without losing sensitivity.

In Czech

Byl vyvinut piezoelektrický imunosensor pro detekci patogenního mikroorganismu Francisella tularensis, působícího onemocnění tularemii. Analyzovaný vzorek se smíchá s velmi malým množstvím specifického IgM a vytvořený imunokomplex je změřen piezosensorem modifikovaným tularemickým antigenem. Doba stanovení je 35 minut, mez detekce 5x10^6 bakterií.

Links

MSM0021622413, plan (intention)
Name: Proteiny v metabolismu a při interakci organismů s prostředím
Investor: Ministry of Education, Youth and Sports of the CR, Proteins in metabolism and interaction of organisms with the environment