TY  - JOUR
PY  - 2013//
TI  - Dual-color bioluminescent bioreporter for forensic analysis: evidence of androgenic and anti-androgenic activity of illicit drugs
JO  - Analytical and bioanalytical chemistry
A1  - Cevenini, Luca
A1  - Michelini, Elisa
A1  - D'Elia, Marcello
A1  - Guardigli, Massimo
A1  - Roda, Aldo
SP  - 1035
EP  - 1045
VL  - 405
IS  - 2-3
N2  - Bioassays represent promising complementary techniques to conventional analytical approaches used in doping analysis to detect illicit drugs like anabolic-androgenic steroids (AAS). The fact that all AAS share a common mechanism of action via the human androgen receptor (hAR) enables the use of bioassays, relying on the activation of hAR as antidoping screening tools. Previously, we developed a dual-color bioreporter based on yeast cells engineered to express hAR and androgen response elements driving the expression of the bioluminescent (BL) reporter protein Photinus pyralis luciferase. A second reporter protein, the red-emitting luciferase PpyRE8, was introduced in the bioreporter as internal viability control. Here, we report the first forensic application of a straightforward, accurate, and cost-effective bioassay, relying on spectral resolution of the two BL signals, in 96-microwell format. The bioreporter responds to dihydrotestosterone as reference androgen in a concentration-dependent manner from 0.08 to 1,000 nM with intra- and inter-assay variation coefficients of 11.4 % and 13.1 %, respectively. We also demonstrated the suitability of this dual-color bioreporter to assess (anti)-androgenic activity of pure AAS, mixtures of AAS, and other illicit drugs provided by the Scientific Police. Significant anti-androgenic activity was observed in samples labeled as marijuana and hashish, containing Δ(9)-tetrahydrocannabinol as major constituent.<p />  <p>Language: en</p>
LA  - en
SN  - 1618-2642
UR  - http://dx.doi.org/10.1007/s00216-012-6416-6
ID  - ref1
ER  -