1
|
Pashirova T, Shaihutdinova Z, Mansurova M, Kazakova R, Shambazova D, Bogdanov A, Tatarinov D, Daudé D, Jacquet P, Chabrière E, Masson P. Enzyme Nanoreactor for In Vivo Detoxification of Organophosphates. ACS Appl Mater Interfaces 2022; 14:19241-19252. [PMID: 35440137 DOI: 10.1021/acsami.2c03210] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A nanoreactor containing an evolved mutant of Saccharolobus solfataricus phosphotriesterase (L72C/Y97F/Y99F/W263V/I280T) as a catalytic bioscavenger was made for detoxification of organophosphates. This nanoreactor intended for treatment of organophosphate poisoning was studied against paraoxon (POX). Nanoreactors were low polydispersity polymersomes containing a high concentration of enzyme (20 μM). The polyethylene glycol-polypropylene sulfide membrane allowed for penetration of POX and exit of hydrolysis products. In vitro simulations under second order conditions showed that 1 μM enzyme inactivates 5 μM POX in less than 10 s. LD50-shift experiments of POX-challenged mice through intraperitoneal (i.p.) and subcutaneous (s.c.) injections showed that intravenous administration of nanoreactors (1.6 nmol enzyme) protected against 7 × LD50 i.p. in prophylaxis and 3.3 × LD50 i.p. in post-exposure treatment. For mice s.c.-challenged, LD50 shifts were more pronounced: 16.6 × LD50 in prophylaxis and 9.8 × LD50 in post-exposure treatment. Rotarod tests showed that transitory impaired neuromuscular functions of challenged mice were restored the day of experiments. No deterioration was observed in the following days and weeks. The high therapeutic index provided by prophylactic administration of enzyme nanoreactors suggests that no other drugs are needed for protection against acute POX toxicity. For post-exposure treatment, co-administration of classical drugs would certainly have beneficial effects against transient incapacitation.
Collapse
Affiliation(s)
- Tatiana Pashirova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str., 8, Kazan 420088, Russian Federation
| | - Zukhra Shaihutdinova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str., 8, Kazan 420088, Russian Federation
- Biochemical Neuropharmacology Laboratory, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420111, Russian Federation
| | - Milana Mansurova
- Biochemical Neuropharmacology Laboratory, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420111, Russian Federation
| | - Renata Kazakova
- Biochemical Neuropharmacology Laboratory, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420111, Russian Federation
| | - Dinara Shambazova
- Biochemical Neuropharmacology Laboratory, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420111, Russian Federation
| | - Andrei Bogdanov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str., 8, Kazan 420088, Russian Federation
| | - Dmitry Tatarinov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str., 8, Kazan 420088, Russian Federation
| | - David Daudé
- Gene&GreenTK, 19-21 Boulevard Jean Moulin, Marseille 13005, France
| | - Pauline Jacquet
- Gene&GreenTK, 19-21 Boulevard Jean Moulin, Marseille 13005, France
| | - Eric Chabrière
- Gene&GreenTK, 19-21 Boulevard Jean Moulin, Marseille 13005, France
- Aix Marseille University, IRD, APHM, MEPHI, IHU-Méditerranée Infection, 19-21 Boulevard Jean Moulin, Marseille 13005, France
| | - Patrick Masson
- Biochemical Neuropharmacology Laboratory, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420111, Russian Federation
| |
Collapse
|