5 research outputs found
ΠΡΠΎΠ½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ Π² ΠΎΠΏΡΡ ΠΎΠ»Π΅Π²ΡΠ΅ ΠΊΠ»Π΅ΡΠΊΠΈ ΡΠΎΡΠΎ-ΡΠ΅Π½ΡΠΈΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΎΡΠ° Ρ Π»ΠΎΡΠΈΠ½Π° Π΅6 Π² ΡΠΎΡΡΠ°Π²Π΅ ΡΠΎΡΡΠΎΠ»ΠΈΠΏΠΈΠ΄Π½ΡΡ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΠΏΡΠΈ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΈΠΈ Ρ Π³Π΅ΠΊΡΠ°ΠΏΠ΅ΠΏΡΠΈΠ΄ΠΎΠΌ, ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠΌ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΠΎΡΡΡ NGR
The possibility of increased internalization of the photosensitizer chlorin e6 in tumor cells was investigatedusing soy phosphatidylcholine nanoparticles 20-30 nm with or without attached peptide containing Asn-Gly-Arg (NGR) motif was studied. This amino acid sequence exhibits affinity to aminopeptidase N (CD13), wich is overexpressed in a number of tumor cells and vessels. Nanoparticles with chlorin e6 were prepared with added of distearoylphosphatidylcholine (DSPE) conjugated through PEG with a hexapeptide containing the NGR sequence, and then were incubated with tumor cells ΠΠ΅ΡG2 and MCF-7. Chlorin e6 accumulation in Π‘D13-negative cells (MCF-7) did not depend on the presence of peptide NGR in nanoparticles. However, for ΠΠ΅ΡG2 cells a twofold increase of chlorine e6 internalization was observed as compared with the same particles without NGR. Differences in the response of these two cell lines, differed in expression of aminopeptidase N (APN), suggest the possibility of this protein using for targeted delivery. The prospectivity of usage of phospholipids nanoparticles conjugated with targeting peptide for photodynamic therapy is discussed, taking into account possible variation of APN expression, inherent for many solid tumors.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΠΏΡΠΎΠ½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ Π² ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΠ΅ ΠΊΠ»Π΅ΡΠΊΠΈ ΡΠΎΡΠΎΡΠ΅Π½ΡΠΈΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΎΡΠ° Ρ
Π»ΠΎΡΠΈΠ½Π° Π΅6 ΠΏΡΡΡΠΌ Π²ΠΊΠ»ΡΡΠ΅Π½ΠΈΡ Π΅Π³ΠΎ Π² Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΡ Ρ ΡΠ°Π·ΠΌΠ΅ΡΠΎΠΌ 20-40 Π½ΠΌ ΠΈΠ· ΡΠΎΠ΅Π²ΠΎΠ³ΠΎ ΡΠΎΡΡΠ°ΡΠΈΠ΄ΠΈΠ»Ρ
ΠΎΠ»ΠΈΠ½Π° Ρ Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΏΠ΅ΠΏΡΠΈΠ΄Π°, ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠ΅Π³ΠΎ ΠΌΠΎΡΠΈΠ² Asn-Gly-Arg (NGR), Π°ΡΡΠΈΠ½Π½ΡΠΉ ΠΊ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΡΡΡΡΠ΅ΠΌΡΡΡ Π½Π° ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΡΡΠ΄Π° ΠΎΠΏΡΡ
ΠΎΠ»Π΅ΠΉ ΠΈ ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΡ
ΡΠΎΡΡΠ΄ΠΎΠ² Π±Π΅Π»ΠΊΡ Π°ΠΌΠΈΠ½ΠΎΠΏΠ΅ΠΏΡΠΈΠ΄Π°Π·Π΅ N (APN, CD13). Π₯Π»ΠΎΡΠΈΠ½ Π΅6 Π²ΡΡΡΠ°ΠΈΠ²Π°Π»ΠΈ Π² Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΡ, ΠΏΡΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½Π½ΡΠ΅ Ρ Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ Π΄ΠΈΡΡΠ΅Π°ΡΠΎΠΈΠ»ΡΠΎΡΡΠ°ΡΠΈΠ΄ΠΈΠ»ΡΡΠ°Π½ΠΎΠ»Π°ΠΌΠΈΠ½Π° (DSPE), ΠΊΠΎΠ½ΡΡΠ³ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π· ΠΠΠ Ρ Π³Π΅ΠΊΡΠ°ΠΏΠ΅ΠΏΡΠΈΠ΄ΠΎΠΌ, Π²ΠΊΠ»ΡΡΠ°ΡΡΠΈΠΌ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΠΎΡΡΡ NGR. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΡ ΠΈΠ½ΠΊΡΠ±ΠΈΡΠΎΠ²Π°Π»ΠΈ Ρ ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΠΌΠΈ ΠΊΠ»Π΅ΡΠΊΠ°ΠΌΠΈ ΠΠ΅ΡG2 ΠΈ MCF-7. ΠΠ»Ρ Π‘D13-ΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ MCF-7 Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΠ΅ Ρ
Π»ΠΎΡΠΈΠ½Π° Π΅6 Π½Π΅ Π·Π°Π²ΠΈΡΠ΅Π»ΠΎ ΠΎΡ ΠΏΡΠΈΡΡΡΡΡΠ²ΠΈΡ ΠΏΠ΅ΠΏΡΠΈΠ΄Π° Π² Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΠ°Ρ
, Π² ΡΠΎ Π²ΡΠ΅ΠΌΡ ΠΊΠ°ΠΊ Π΄Π»Ρ ΠΊΠ»Π΅ΡΠΎΠΊ ΠΠ΅ΡG2 Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΎΡΡ Π΄Π²ΡΠΊΡΠ°ΡΠ½ΠΎΠ΅ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΠ΅ ΠΈΠ½ΡΠ΅ΡΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ Ρ
Π»ΠΎΡΠΈΠ½Π° Π΅6 ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΈΠ½ΠΊΡΠ±Π°ΡΠΈΠ΅ΠΉ Ρ ΡΠ°ΠΊΠΈΠΌΠΈ ΠΆΠ΅ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΠ°ΠΌΠΈ Π±Π΅Π· NGR. Π Π°Π·Π»ΠΈΡΠΈΡ ΠΎΡΠ²Π΅ΡΠ° ΡΡΠΈΡ
Π΄Π²ΡΡ
ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΡ
Π»ΠΈΠ½ΠΈΠΉ, ΠΎΡΠ»ΠΈΡΠ°ΡΡΠΈΡ
ΡΡ ΠΏΠΎ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ APN, ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π°ΡΡ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΡΡΠΎΠ³ΠΎ Π±Π΅Π»ΠΊΠ° Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠΈΡΠ΅Π½ΠΈ Π΄Π»Ρ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΠΉ Π΄ΠΎΡΡΠ°Π²ΠΊΠΈ. ΠΠ±ΡΡΠΆΠ΄Π°Π΅ΡΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠΎΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ ΡΠΎΡΡΠΎΠ»ΠΈΠΏΠΈΠ΄Π½ΡΡ
Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Ρ ΠΏΡΠΈΡΠΎΠ΅Π΄ΠΈΠ½ΡΠ½Π½ΡΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠΌ NGR Π°Π΄ΡΠ΅ΡΠ½ΡΠΌ ΠΏΠ΅ΠΏΡΠΈΠ΄ΠΎΠΌ Ρ ΡΡΡΡΠΎΠΌ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΡ
Π²Π°ΡΠΈΠ°ΡΠΈΠΉ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ APN, ΡΠ²ΠΎΠΉΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΠΌΠ½ΠΎΠ³ΠΈΠΌ ΡΓ³Π»ΠΈΠ΄Π½ΡΠΌ ΠΎΠΏΡΡ
ΠΎΠ»ΡΠΌ
ΠΠΎΠ½ΡΡΠ³Π°ΡΡ ΠΏΠΈΡΠΎΡΠ΅ΠΎΡΠΎΡΠ±ΠΈΠ΄Π° Π° Ρ 17-Π·Π°ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΌΠΈ ΡΡΠ΅ΡΠΎΠΈΠ΄Π½ΡΠΌΠΈ Π°Π½Π΄ΡΠΎΠ³Π΅Π½Π°ΠΌΠΈ. Π‘ΠΈΠ½ΡΠ΅Π·, ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅, Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ Ρ Π½Π΅ΠΊΠΎΡΠΎΡΡΠΌΠΈ Π»ΠΈΠ½ΠΈΡΠΌΠΈ ΡΠ°ΠΊΠΎΠ²ΡΡ ΠΊΠ»Π΅ΡΠΎΠΊ
Five new bifunctional conjugates of pyropheophorbide a with 17-substituted testosterone, dihydrotestosterone and epitestosterone differing in the length of linker (1 β 5) and two new complex conjugates 6 and 7 (containing three functional units: pyropheophorbide a, 17Ξ±-substituted testosterone, and lipophylic hexadecyl chain, connected with L-lysine joining block) were synthesized. Mutual influence of steroidal and macrocyclic fragments in conjugates (1 β 7) was established by analysis of 1H NMR spectra and molecular models of conjugates. Studies of interaction of conjugates 1 β 5 with prostate carcinoma cells revealed that their uptake and internalization were dependent on the structure of conjugates, particularly on the stereochemical configuration of 17-hydroxyl group in steroidal moiety, and the length of linker connecting pyropheophorbide a with steroid fragments. Conjugates 1 β 5 significantly decreased the growth and proliferation of LNCaP and PC-3 cells. The highest anti-proliferative activity demonstrated by epitestosterone derivative 3, comprising short linker. Irradiation of labeled cells with light (Ξ» = 660 nm) was significantly increased cytotoxicity. Trifunctional conjugates 6 and 7 easily formed mixed micells with phosphatidyl choline and pluronic F68; these mixed micelles efficiently internalized by human hepatocarcinoma Hep G2 cells. The binding of conjugates 6 and 7 in the form of mixed micelles to Hep G2 cells depended on the conjugate structure, rather than on the method of solubilization.ΠΡΠ»ΠΈ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Ρ ΠΏΡΡΡ Π½ΠΎΠ²ΡΡ
Π±ΠΈΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² ΠΏΠΈΡΠΎΡΠ΅ΠΎΡΠΎΡΠ±ΠΈΠ΄Π° Π° Ρ 17-Π·Π°ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΌΠΈ ΡΠ΅ΡΡΠΎΡΡΠ΅ΡΠΎΠ½ΠΎΠΌ, Π΄ΠΈΠ³ΠΈΠ΄ΡΠΎΡΠ΅ΡΡΠΎΡΡΠ΅ΡΠΎΠ½ΠΎΠΌ ΠΈ ΡΠΏΠΈΡΠ΅ΡΡΠΎΡΡΠ΅ΡΠΎΠ½ΠΎΠΌ, ΡΠ°Π·Π»ΠΈΡΠ°ΡΡΠΈΡ
ΡΡ Π΄Π»ΠΈΠ½ΠΎΠΉ Π»ΠΈΠ½ΠΊΠ΅ΡΠ° (1β5), ΠΈ Π΄Π²Π° Π½ΠΎΠ²ΡΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΡ
ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠ° 6 ΠΈ 7 (ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠ΅ ΡΡΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠ΅ Π³ΡΡΠΏΠΏΡ: ΠΏΠΈΡΠΎΡΠ΅ΠΎΡΠΎΡΠ±ΠΈΠ΄ Π°, 17Ξ±-Π·Π°ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΉ ΡΠ΅ΡΡΠΎΡΡΠ΅ΡΠΎΠ½ ΠΈ Π»ΠΈΠΏΠΎΡΠΈΠ»ΡΠ½Π°Ρ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΠ½Π°Ρ ΡΠ΅ΠΏΡ, ΡΠ²ΡΠ·Π°Π½Π½ΡΠ΅ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠΎΠ±ΠΎΠΉ L-Π»ΠΈΠ·ΠΈΠ½ΠΎΠ²ΡΠΌ Π±Π»ΠΎΠΊΠΎΠΌ). ΠΠ½Π°Π»ΠΈΠ·ΠΎΠΌ ΡΠΏΠ΅ΠΊΡΡΠΎΠ² 1H Π―ΠΠ ΠΈ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΡ
ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² 1β7 ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ Π²Π·Π°ΠΈΠΌΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΡΠ΅ΡΠΎΠΈΠ΄Π½ΠΎΠ³ΠΎ ΠΈ ΠΌΠ°ΠΊΡΠΎΡΠΈΠΊΠ»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠ². ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² 1β5 Ρ ΠΊΡΠ»ΡΡΡΡΠ°ΠΌΠΈ ΠΊΠ»Π΅ΡΠΎΠΊ ΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌΡ ΠΏΡΠ΅Π΄ΡΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ, ΡΡΠΎ ΠΈΡ
ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ ΠΈ ΠΈΠ½ΡΠ΅ΡΠ½Π°Π»ΠΈΠ·Π°ΡΠΈΡ Π·Π°Π²ΠΈΡΡΡ ΠΎΡ ΡΡΡΡΠΊΡΡΡΡ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠ°, Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ, ΠΎΡ ΡΡΠ΅ΡΠ΅ΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠΎΠ½ΡΠΈΠ³ΡΡΠ°ΡΠΈΠΈ 17-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΠ»ΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΡ Π² ΡΡΠ΅ΡΠΎΠΈΠ΄Π½ΠΎΠΉ ΡΠ°ΡΡΠΈ ΠΈ Π΄Π»ΠΈΠ½Ρ Π»ΠΈΠ½ΠΊΠ΅ΡΠ°, ΡΠΎΠ΅Π΄ΠΈΠ½ΡΡΡΠ΅Π³ΠΎ ΠΏΠΈΡΠΎΡΠ΅ΠΎΡΠΎΡΠ±ΠΈΠ΄ Π° ΡΠΎ ΡΡΠ΅ΡΠΎΠΈΠ΄Π½ΡΠΌ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠΌ. ΠΠΎΠ½ΡΡΠ³Π°ΡΡ 1β5 Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠ½ΠΈΠΆΠ°Π»ΠΈ ΡΠΎΡΡ ΠΈ ΠΏΡΠΎΠ»ΠΈΡΠ΅ΡΠ°ΡΠΈΡ ΠΊΠ»Π΅ΡΠΎΠΊ LNCaP ΠΈ PC-3 ΠΏΡΠΈ 96-ΡΠ°ΡΠΎΠ²ΠΎΠΉ ΠΈΠ½ΠΊΡΠ±Π°ΡΠΈΠΈ; Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΎΠΉ Π°Π½ΡΠΈΠΏΡΠΎΠ»ΠΈΡΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΎΠ±Π»Π°Π΄Π°Π»ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΠΎΠ΅ ΡΠΏΠΈΡΠ΅ΡΡΠΎΡΡΠ΅ΡΠΎΠ½Π° Ρ ΠΊΠΎΡΠΎΡΠΊΠΈΠΌ Π»ΠΈΠ½ΠΊΠ΅ΡΠΎΠΌ 3. ΠΠ±Π»ΡΡΠ΅Π½ΠΈΠ΅ ΠΎΠ±ΡΠ°Π±ΠΎΡΠ°Π½Π½ΡΡ
ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠ°ΠΌΠΈ ΠΊΠ»Π΅ΡΠΎΠΊ ΡΠ²Π΅ΡΠΎΠΌ (Ξ» = 660 Π½ΠΌ) Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΏΠΎΠ²ΡΡΠ°Π»ΠΎ ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΡ. Π’ΡΠΈΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠ΅ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΡ 6 ΠΈ 7 Π»Π΅Π³ΠΊΠΎ ΠΎΠ±ΡΠ°Π·ΠΎΠ²ΡΠ²Π°Π»ΠΈ ΡΠΌΠ΅ΡΠ°Π½Π½ΡΠ΅ ΠΌΠΈΡΠ΅Π»Π»Ρ Ρ ΡΠΎΡΡΠ°ΡΠΈΠ΄ΠΈΠ»Ρ
ΠΎΠ»ΠΈΠ½ΠΎΠΌ ΠΈ ΠΏΠ»ΡΡΠΎΠ½ΠΈΠΊΠΎΠΌ F68; Π΄Π°Π½Π½ΡΠ΅ ΡΠΌΠ΅ΡΠ°Π½Π½ΡΠ΅ ΠΌΠΈΡΠ΅Π»Π»Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎ ΠΈΠ½ΡΠ΅ΡΠ½Π°Π»ΠΈΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΊΠ»Π΅ΡΠΊΠ°ΠΌΠΈ Π³Π΅ΠΏΠ°ΡΠΎΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌΡ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Hep G2. Π‘Π²ΡΠ·ΡΠ²Π°Π½ΠΈΠ΅ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠΎΠ² 6 ΠΈ 7 Π² Π²ΠΈΠ΄Π΅ ΡΠΌΠ΅ΡΠ°Π½Π½ΡΡ
ΠΌΠΈΡΠ΅Π»Π» Ρ ΠΊΠ»Π΅ΡΠΊΠ°ΠΌΠΈ Hep G2 Π·Π°Π²ΠΈΡΠ΅Π»ΠΎ ΠΎΡ ΡΡΡΡΠΊΡΡΡΡ ΠΊΠΎΠ½ΡΡΠ³Π°ΡΠ° ΠΈ Π½Π΅ Π·Π°Π²ΠΈΡΠ΅Π»ΠΎ ΠΎΡ ΡΠΏΠΎΡΠΎΠ±Π° Π΅Π³ΠΎ ΡΠΎΠ»ΡΠ±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ
New steroidal oxazolines, benzoxazoles and benzimidazoles related to abiraterone and galeterone
Seven new oxazoline, benzoxazole and benzimidazole derivatives were synthesized from 3Ξ²-acetoxyandrosta-5,16-dien-17-carboxylic, 3Ξ²-acetoxyandrost-5-en-17Ξ²-carboxylic and 3Ξ²-acetoxypregn-5-en-21-oic acids. Docking to active site of human 17Ξ±-hydroxylase/17,20-lyase revealed that all oxazolines, as well as benzoxazoles and benzimidazoles comprising Ξ16 could form stable complexes with enzyme, in which steroid moiety is positioned similarly to that of abiraterone and galeterone, and nitrogen atom coordinates heme iron, while 16,17-saturated benzoxazoles and benzimidazoles could only bind in a position where heterocycle is located nearly parallel to heme plane. Modeling of the interaction of new benzoxazole and benzimidazole derivatives with androgen receptor revealed the destabilization of helix 12, constituting activation function 2 (AF2) site, by mentioned compounds, similar to one induced by known antagonist galeterone. The synthesized compounds inhibited growth of prostate carcinoma LNCaP and PC-3 cells at 96 h incubation; the potency of 2β²-(3Ξ²-hydroxyandrosta-5,16-dien-17-yl)-4β²,5β²-dihydro-1β²,3β²-oxazole and 2β²-(3Ξ²-hydroxyandrosta-5,16-dien-17-yl)-benzimidazole was superior and could inspire further investigations of these compounds as potential anti-cancer agents. Β© 2019 Elsevier Inc