ES2415244T3 - Conjugados de éster de aminoácido alfa-fármaco hidrolizables mediante carboxilesterasa - Google Patents
Conjugados de éster de aminoácido alfa-fármaco hidrolizables mediante carboxilesterasa Download PDFInfo
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- ES2415244T3 ES2415244T3 ES06727008T ES06727008T ES2415244T3 ES 2415244 T3 ES2415244 T3 ES 2415244T3 ES 06727008 T ES06727008 T ES 06727008T ES 06727008 T ES06727008 T ES 06727008T ES 2415244 T3 ES2415244 T3 ES 2415244T3
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- amino acid
- inhibitor
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- conjugate
- ester
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Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Peptides Or Proteins (AREA)
- Medicinal Preparation (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Enzymes And Modification Thereof (AREA)
Abstract
Un conjugado covalente de un éster de alfa-aminoácido y un inhibidor de la actividad de la enzima histona acetilasa intracelular diana para usar en un procedimiento de tratamiento del cuerpo humano o animal mediante terapia, donde el grupo éster del conjugado es hidrolizable por una o más enzimas carboxilesterasas intracelulares en el correspondiente ácido; el nitrógeno del grupo amino del aminoácido éster no está unido directamente a un resto carbonilo o se deja sin sustituir; y el alfa-aminoácido éster está conjugado con el inhibidor en una posición remota de la interfaz de unión entre el inhibidor y la enzima histona desacetilasa, donde la posición de la conjugación es remota cuando el conjugado tiene una potencia en un ensayo de actividad celular al menos tan alta como la del inhibidor no conjugado en el mismo ensayo, donde el ensayo de actividad celular es un ensayo de inhibición de la proliferación celular llevado a cabo en células de cáncer U937.
Description
Además del requisito de que el grupo éster debe ser hidrolizable por una o más enzimas intracelulares, puede ser preferible, para algunas aplicaciones (por ejemplo, para la administración sistémica del conjugado) que sea resistente a la hidrólisis por enzimas de hidrólisis de carboxiléster en plasma, ya que esto asegura que el modulador 35 conjugado sobrevivirá tras la administración sistémica durante un tiempo suficiente como para penetrar en las células como el éster. Simplemente hay que probar cualquier conjugado dado para medir su semivida en plasma como el éster mediante incubación en plasma. No obstante, se ha descubierto que los ésteres derivados de alcoholes secundarios son más estables a las enzimas de hidrólisis de carboxiléster en plasma que los derivados de alcoholes primarios. Además, también se ha descubierto que aunque los ésteres derivados de alcoholes terciarios 40 son generalmente estables a las enzimas de hidrólisis de carboxiléster en plasma, a menudo son también relativamente estables a las carboxilesterasas intracelulares. Teniendo en cuenta estos hallazgos, actualmente se prefiere que R1 en las fórmulas (IA), (IB) and (IC) anteriores sea un grupo éster de la fórmula -(C=O)OR9 en la que R9 es (i) R7R8CH- en la que R7 es (C1-C3)alquilo-(Z1)a-(C1-C3)alquilo- o (C2-C3)alquenilo-(Z1)a-(C1-C3)alquilo opcionalmente sustituido, en la que a es 0 o 1 y Z1 es -O-, -S-, o -NH-, y R8 es hidrógeno o (C1-C3)alquilo, o R7 y R8 45 tomados junto con el carbono al que están unidos forman un anillo C3-C7 cicloalquilo opcionalmente sustituido o un anillo heterocíclico opcionalmente sustituido de 5- o 6 átomos de anclo; o (ii) fenilo o anillo heterocíclico monocíclico opcionalmente sustituido que tiene 5 o 6 átomos del anillo. Dentro de estas clases, R9 puede ser, por ejemplo, metilo, etilo, n- o iso-propilo, n- o sec-butilo, ciclohexilo, alilo, fenilo, bencilo, 2-, 3- o 4-piridilometilo, N-metilopiperidin-4-ilo, tetrahidrofuran-3-ilo o metoxietilo Actualmente se prefiere cuando R9 es ciclopentilo. 50
Ejemplos de cadenas laterales de aminoácidos incluyen 60
Tabla 1 35
- Diana
- Referencia de la estructura cristalina Enfermedad diana
- CD45
- Nam y col., J Exp Med 201, 441 (2005) Enfermedad autoinmunitaria
- Lck
- Zhu y col., Structure 7, 651 (1999) Inflamación
- ZAP-70
- Jin y col., J Biol Chem 279, 42818 (2004) Enfermedad autoinmunitaria
- PDE4
- Huai y col., Biochemistry 42, 13220 (2003) Inflamación
- PDE3
- Scapin y col., Biochemistry 43, 6091 (2004) Asma
- IMPDH
- Intchak y col., Cell 85, 921 (1996) Psoriasis
- p38 MAPK
- Wang y col., Structure 6, 1117 (1998) Inflamación
- COX2
- Kiefer y col., J Biol Chem 278, 45763, (2003) Inflamación
- Adenosina quinasa
- Schumacher y col., J Mol Biol 298, 875 (2000) Inflamación
- PLA2
- Chandra y col., Biochemistry B 10914 (2002) Psoriasis
- PLC
- Essen y col., Biochemistry 36, 1704, (1997) Artritis reumatoide
- PLD
- Leiros y col., J Mol Biol 339, 805 (2004) Inflamación
- iNOS
- Rosenfeld y col., Biochemistry 41, 13915 (2002) Inflamación
- LTA4 hidrolasa
- Rudberg y col., J Biol Chem 279, 27376 (2004) Inflamación
- ICE
- Okamato y col., Chem Pharm Bull 47, 11 (1999) Artritis reumatoide
- GSK3β
- Bertrand y col., J Mol Biol 333, 393 (2003) Artritis reumatoide
- PKC
- Xu y col., JBC 279, 50401 (2004) Inflamación
- PARP
- Ruf y col., PNAS (USA) 93, 7481 (1996) Trastornos proliferativos
- MetAP2
- Sheppard et al Bioorg Med Chem Lett 14, 865 (2004) Artritis reumatoide
- Receptor de corticoides
- Bledsoe y col., Cell 110, 93 (2002) Inflamación
- PI3K
- Walker y col., Mol Cell Biol 6, 909 (2000) Trastornos proliferativos
- Raf
- Wan y col., Cell 116, 855 (2004) Trastornos proliferativos
- AKT/PKB
- Yang y col., Nat Struct Biol 9, 940 (2002) Trastornos proliferativos
- HDAC
- Finnin y col., Nature 401, 188 (1999) Trastornos proliferativos
- Diana
- Referencia de la estructura cristalina Enfermedad diana
- c-Abl
- Nagar y col., Cancer Res 62, 4236 (2002) Trastornos proliferativos
- IGF-1R
- Munshi y col., Acta Crystallogr Sect D 59, 1725 (2003) Trastornos proliferativos
- Timidilato Sintetasa
- Stout y col., Structure 6, 839 (1998) Trastornos proliferativos
- Glicinamida Ribonucleótido Formiltransferasa
- Klein y col., J Mol Biol 249, 153 (1995) Trastornos proliferativos
- Nucleósido púrico fosforilasa
- Koelner y col., J Mol Biol 280, 153 (1998) Trastornos proliferativos
- Estrona sulfatasa
- Hernandez-Guzman y col., J Biol Chem 278, 22989 (2003) Trastornos proliferativos
- EGF-RTK
- Stamos y col., J Biol Chem 277, 46265 (2002) Trastornos proliferativos
- Src quinasa
- Lamers y col., J Mol Biol 285, 713 (1999) Trastornos proliferativos
- VEGFR2
- McTigue y col., Structure 7, 319 (19999) Trastornos proliferativos
- Superóxido Dismutasa
- Hough y col., J Mol Biol 287, 579 (1999) Trastornos proliferativos
- Ornitina Descarboxilasa
- Almrud y col., J Mol Biol 295, 7 (2000) Trastornos proliferativos
- Topoisomerasa II
- Classen y col., PNAS (USA) 100, 10629 (2003) Trastornos proliferativos
- Topoisomerasa I
- Staker y col., PNAS (USA), 99, 15387 (2002) Trastornos proliferativos
- Receptor de andrógenos
- Matias y col., J Biol Chem 275, 26164 (2000) Trastornos proliferativos
- JNK
- Heo y col., EMBO J 23, 2185 (2004) Trastornos proliferativos
- Farnesil Transferasa
- Curtin y col., Bioorg Med Chem Lett 13, 1367 (2003) Trastornos proliferativos
- CDK
- Davis y col., Science 291, 134 (2001) Trastornos proliferativos
- Dihidrofolato Reductasa
- Gargaro y col., J Mol Biol 277, 119 (1998) Trastornos proliferativos
- Flt3
- Griffith y col., Mol Cell 13, 169 (2004) Trastornos proliferativos
- Anhidrasa carbónica
- Stams y col., Protein Sci 7, 556 (1998) Trastornos proliferativos
- Timidina Fosforilasa
- Norman y col., Structure 12, 75 (2004) Trastornos proliferativos
- Dihidroporimidina Deshidrogenasa
- Dobritzsch y col., JBC 277, 13155, (2002) Trastornos proliferativos
- Manosidasa α
- Van den Elsen y col., EMBO J 20, 3008 (2001) Trastornos proliferativos
- Peptidil-prolil isomerasa (Pin1)
- Ranganathan y col., Cell 89, 875 (1997) Trastornos proliferativos
- Receptor retinoide X
- Egea y col., EMBO J 19, 2592 (2000) Trastornos proliferativos
- β-Glucuronidasa
- Jain y col., Nat Struct Biol 3, 375 (1996) Trastornos proliferativos
- Glutatión Transferasa
- Oakley y col., J Mol Biol 291, 913 (1999) Trastornos proliferativos
- hsp90
- Jez y col., Chem Biol 10, 361 (2003) Trastornos proliferativos
- IMPDH
- intchak y col., Cell 85, 921 (1996) Trastornos proliferativos
- Fosfolipasa A2
- Chandra y col., Biochemistry 41, 10914 (2002) Trastornos proliferativos
- Fosfolipasa C
- Essen y col., Biochemistry 36, 1704, (1997) Trastornos proliferativos
- Fosfolipasa D
- Leiros y col., J Mol Biol 339, 805 (2004) Trastornos proliferativos
- MetAP2
- Sheppard et al Bioorg Med Chem Lett 14, 865 (2004) Trastornos proliferativos
- PTP-1 B
- Andersen y col., J Biol Chem 275, 7101 (2000) Trastornos proliferativos
- Aurora quinasa
- Fancelli y col., in press Trastornos proliferativos
- PDK-1
- Komander y col., Biochem J 375, 255 (2003) Trastornos proliferativos
- HMGCoA reductasa
- Istvan and Deisenhofer Science 292, 1160 (2001) Aterosclerosis
- Oxidoescualeno ciclasa
- Lenhart y col., Chem Biol 9, 639 (2002) Hipercolesterolemia
- Estimulador de la piruvato deshidrogenasa
- Mattevi y col., Science 255, 1544 (1992) Enfermedad cardiovascular
- Adenilato ciclasa
- Zhang y col., Nature 386, 247 (1997) Enfermedad cardiovascular
- Agonista de PPARγ
- Ebdurp y col., J Med Chem 46, 1306 (2003) Diabetes
- Alcohol deshidrogenasa
- Bahnson y col., PNAS USA 94, 12797 (1997) Intoxicación alcohólica
- Lipasa sensible a hormonas
- Wei y col., Nat Struct Biol 6, 340 (1999) Diabetes resistente a la insulina
- Adenosina quinasa
- Mathews y col., Biochemistry 37, 15607 (1998) Epilepsia
- Aldosa reductasa
- Urzhmsee al.,Structure 5, 601 (1997) Diabetes
- Receptor de la vitamina D3
- Tocchini-Vatentini y col., PNAS USA 98, 5491 (2001) Osteoporosis
- Proteína tirosina fosfatasa
- Andersen y col., J Biol Chem 275, 7101 (2000) Diabetes
- VIH Proteasa
- Louis y col., Biochemistry 37, 2105 (1998) VIH
- Diana
- Referencia de la estructura cristalina Enfermedad diana
- VHC Polimerasa
- Bressanelli y col., PNAS USA 96, 13034 (1999) Hepatitis C
- Neuraminidasa
- Taylor y col., J Med Chem 41, 798 (1998) Influenza
- Transcriptasa inversa
- Das y col., J Mol Biol 264, 1085 (1996) VIH
- Proteasa del CMV
- Khayat y col., Biochemistry 42, 885 (2003) Infección por CMV
- Timidina quinasa
- Champness y col., Proteins 32, 350 (1998) Infecciones por herpes
- Integrasa del VIH
- Molteni y col., Acta Crystallogr Sect D 57, 536 (2001) VIH
- U937 (línea celular monocítica) HCT116 (línea celular no monocítica)
- Compuesto
- CI50 nM enzima1 (ácido) CI50 nM proliferación celular Proporción CI50 Célula/enzima Ácido producido2 ng/ml CI50 nM proliferación celular Proporción CI50 Célula/enzima Ácido producido2 ng/ml
- (2 G=N)
- NA NA
- 2700 (11) 1,9 1,4
- 1033 (25) 0,3 6,6
- 4000 (10) 0,8 1,7
- 1700 (8) 0,013 0,04
- Notas 1 Las cifras entre corchetes hacen referencia a las CI50 de la enzima para el ácido resultante de la escisión de los ésteres 2 La cantidad de ácido producido tras la incubación del éster durante 80 minutos en el ensayo de carboxilesterasa de rotura celular descrito anteriormente.
Los siguientes bloques estructurales se usaron para la síntesis de los moduladores modificados:
- Éster de ácido (S)-2-terc-butoxicarbonilamino-4-hidroxibutírico
- Éster ciclopentílico de (S)-4-bromo-2-terc-butoxicarbonilaminobutírico
- Éster ciclopentílico de (S)-2-amino-4-metil-pentanoico
- Éster ciclopentílico de ácido (S)-amino-fenilacético
- Éster ciclopentílico de ácido (S)-2-terc-butoxicarbonilamino-pentanodioico
- Éster terc-butílico de ácido (S)-2-benciloxicarbonilamino-4-bromo-butírico
- Éster terc-butílico de ácido (S)-2-terc-butoxicarbonilamino-pentanodioico
5
El éster ciclopentílico de ácido (S)-amino-fenilacético se preparó a partir de ácido (S)-amino-fenilacético siguiendo el mismo procedimiento usado para la síntesis de éster ciclopentílico de ácido (S)-amino-4-metilpentanoico. 5
El SAHA se adquirió de BioCat GmbH, Heidelberg, Alemania.
A un matraz de fondo redondo cargado con la resina de la etapa 1 (4 g, carga 1,14 mmol/g, 4,56 mmol) se añadió THF (16 ml) y MeOH (16 ml). A la reacción se añadió una solución de NaOH (0,91 g, 22,8 mmol, 5 eq) en agua (16 ml). La mezcla de reacción se agitó durante 48 horas. La resina se filtró y se lavó con agua x 2, MeOH x 2, seguido del procedimiento de lavado estándar La resina se secó al vacío. La pureza CLEM se determinó mediante detección 30 ELS, 100 %, m/z 190 [M++H]+.
La capacidad de los compuestos para inhibir la actividad de la P38 MAP quinasa α (enzima humana d elongitud 45 completa que se expresa en E. coli como una proteína marcada con GST en el extremo) se midió usando un ensayo realizado por Upstate (Dundee UK). En un volumen de reacción final de 25 µl, la P38 MAP quinasa α (5-10 mU) se incubó con Tris 25 mM a pH 7,5, EGTA 0,02 mM, 0,33 mg/ ml de la proteína básica de la mielina, acetato de magnesio 10 mM, ATP 90 µM (Km 97 µM) y [γ33P]-ATP (actividad específica aproximada 500 cpm/p mol). La reacción se inició mediante la adición de la mezcla de mgATP. Tras incubar durante 40 minutos TA, la reacción se 50 detuvo mediante la adición de 5 µl de solución de ácido fosfórico al 3 %. Después se colocaron 10 µl de la reacción sobre un filtro P30 y se lavó tres veces durante 5 mnutos en ácido fosfórico 75 mM y una cez con metanol, antes de secar y contar mediante centelleo.
- HDAC
- Inhibición enzimática CI50 nM (HDAC – extracto nuclear de células HeLa) CI50 (nM) proliferación celular Proporción celular/enzima, CI50
- Compuesto modulador no modificado (7) (SAHA)
- (Compuesto modulador modificado (8) (éster ciclopentílico)
- 0,5
- Ácido resultante de la escisión del éster del modulador modificado (compuesto 9)
- Inactivo NA
- (Compuesto modulador modificado (10): (éster de t-butilo)
i. Los compuestos modificados con aminoácido éster (compuestos 8 y 10) y el ácido (compuesto 9), que resultaría de la escisión del motivo éster, tienen CI50 en el ensayo enzimático comparable al valor para el inhibidor no modificado HDAC (SAHA- Compuesto 7), lo que indica que el motivo alfa-aminoácido éster estaba unido a SAHA en un punto donde no se altere la unión a la P38 MAP quinasa .
ii. Aunque los ésteres (compuestos 8 y 19) y el ácido (compuesto 9) tienen actividades comparables al 45 inhibidor no modificado (SAH—puesto 8) sobre el inhibidor no modificado (compuesto 7),m pero una disminución sustancial en la potencia celular en el caso de la esterasa estable a t-butil éster (compuesto 10), lo que indica que cuando más tarde se acumule, el ácido en las células genera mayor potencia celular.
iii. La mayor actividad en el ensayo de proliferación celular del compuesto 8 sobre el homólogo no modifcado ((compuesto 7) (o el derivado de éster no hidrolizable, conpuesto 19, indica que el éster se hidroliza en el ácido 50 parental hidrolizado . El indica que el éster ciclopentílico se hidroliza en el ácido parental en la célula, donde se acumula y ejerce un mayor efecto inhibidor.
- Aurora quinasa
- Inhibición enzimática CI50 nM (Aurora quinasa A)) CI50 (nM) proliferación celular Proporción celular/enzima, CI50
- Compuesto modulador no modificado (11)
- 1,3
- (Compuesto modulador modificado (12) (éster ciclopentílico)
- 3,5 0,0015
- Ácido resultante de la escisión del éster del modulador modificado (compuesto 13)
- >5000 NA
- (Compuesto modulador modificado (14): (éster de t-butilo)
- 0,025
Los resultados anteriores muestran que:
i. el inhibidor modificado con alfa-aminoácido, compuesto 13, que resultaría de la escisión del motivo éster en 5 el compuesto 12, tiene un valor de CI50 en el ensayo enzimático comparable al del inhibidor no modificado de la aurora quinasa (compuesto 11), lo que indica que es posible unir el motivo alfa-aminoácido éster en un punto donde no se altere la unión a la aurora quinasa A.
ii. Aunque el ácido (compuesto 13) tiene una actividad inhibidora enzimática comparable a la del inhibidor no modificado (compuesto 11) y el éster (compuesto 12) es un inhibidor más débil, existe un incremento 10 significativo de la potencia celular del compuesto 12 sobre la del inhibidor no modificado (compuesto 11). El éster-t-butílico (compuesto 14) menos fácilmente escindido tiene una actividad enzimática comprable a la del éster ciclopentílico escindible (compuesto 12), ero es unas 20 veces menos activo en el ensayo celular.
iii. La mayor actividad en el ensayo de proliferación celular del compuesto 12 sobre el homólogo no modificado (compuesto 11) y el éster t-butílico menos fácilmente escindido (compuesto 14) indica que el éster ciclopentílico 15 se hidroliza en el ácido parental en la célula, donde se acumula y ejerce un mayor efecto inhibidor.
- P38 MAP quinasa
- Inhibición enzimática CI50 nM (P38 MAP quinasa) Inhibiciσn de la producciσn de TNFα en sangre entera humana, CI50 nM Proporción WB/enzima, CI50
- Compuesto modulador no modificado (15)
- (Compuesto modulador modificado (16) (éster ciclopentílico)
- 0,8
- Ácido resultante de la escisión del éster del modulador modificado (compuesto 17)
- No analizado NA
- (Compuesto modulador modificado (18): (éster de t-butilo)
Los resultados anteriores muestran que: 20
i. el inhibidor modificado con alfa-aminoácido éster, compuesto 16, y el ácido, compuesto 17, que resultaría de la escisión del motivo éster en el compuesto 16, tienen un valor de CI50 en el ensayo enzimático comparable al valor para el inhibidor no modificado de la P38 MAP quinasa (compuesto 15), lo que indica que es posible unir el motivo alfa-aminoácido éster en un punto donde no se altere la unión a la P38 MAP quinasa . 25
ii. el ácido, compuesto 17, tiene una actividad comparable contra la enzima a la del inhibidor no modificado (compuesto 15) y al éster t-butílico (compuesto 18). No obstante, existe un incremento significativo de la capacidad del éster ciclopentílico (compuesto 16) para inhibir la producción del TNF dentro de las células monocíticas presentes en la sangre entera en comparación con el inhibidor no modificado (compuesto 15) y el éster t-butílico menos fácilmente escindido (compuesto 18). 30
iii. la mayor actividad en el ensayo de sangre entera para el compuesto 16 sobre el homólogo no modificado, compuesto 15, y el éster t-butílico menos fácilmente escindido compuesto 18 indica que el éster ciclopentílico se hidroliza en el ácido parental en la célula, donde se acumula y ejerce un mayor efecto inhibidor.
- DHFR
- Inhibición enzimática CI50 nM (DHFR) CI50 (nM) proliferación celular (células U937) Proporción celular/enzima, CI50
- Compuesto modulador no modificado (2 G=N):
- (Compuesto modulador modificado (6) (éster ciclopentílico)
- 0,013
- Ácido resultante de la escisión del éster del modulador modificado (compuesto 19)
- No analizado No aplicable
Los resultados anteriores muestran que:
i. el inhibidor modificado con alfa-aminoácido, compuesto 19, que resultaría de la escisión del motivo éster en el compuesto 6, tiene un valor de CI50 en el ensayo enzimático comparable al del inhibidor no modificado de la 5 DHFR (compuesto 2 (G=N)), lo que indica que es posible unir el motico alfa-aminoácido éster en un punto donde no se altere la unión a la DHFR.
ii. aunque el ácido (compuesto 19) tiene una actividad inhibidora enzimática comparable a la del inhibidor no modificado (compuesto 2 (G=N)), el éster (compuesto 6) es significativamente más potente en la inhibición de la proliferació celular que el inhibidor no modifcado (compuesto 2 (G=N)). 10
iii. la mayor actividad en el ensayo de proliferación celular del compuesto 6 sobre el homólogo no modifcado ((compuesto 2 (G=N)) indica que el éster ciclopentílico se hidroliza en el ácido parental en la célula, donde se acumula y ejerce un mayor efecto inhibidor.
- PI 3-quinasa
- Inhibición enzimática CI50 nM (PI3-quinasa) Inhibición de la producción de TNFα en sangre entera humana, CI50 nM Proporción WB/enzima, CI50
- Compuesto modulador no modificado (20)
- (Compuesto modulador modificado (21) (éster ciclopentílico)
- 0,15
- Ácido resultante de la escisión del éster del modulador modificado (22)
- No analizado No aplicable
- Compuesto modulador modificado (23) (éster-t-butílico)
- 0,75
Los resultados anteriores muestran que:
i. el inhibidor modificado con alfa-aminoácido éster, compuesto 21, y el ácido, compuesto 22, que resultaría de la escisión del motivo éster en el compuesto 21, tiene un valor de CI50 en el ensayo enzimático dentro de 20 un factor de 10 del valor para el inhibidor no modificado de la PI3 quinasa (compuesto 20), lo lo que indica que es posible unir el motivo alfa-aminoácido éster en un punto donde no se altere la unión a la PI3 quinasa.
ii. aunque el ácido, compuesto 22, tiene una actividad comparable con la del inhibidor no modificado (compuesto 20) y el éster (compuesto 21), hay un incremento significativo de la potencia del éster para inhibir 25 la producción de TNF en células monocíticas presentes en sangre entera en comparación con el inhibidor no modificado (Compuesto 20) y el éster t-butílico menos fácilmente escindido (compuesto 23).
iii. la mayor actividad en el ensayo de sangre entera para el compuesto 21 sobre el homólogo no modificado, compuesto 20, y el éster t-butílico menos fácilmente escindido compuesto 23 indica que el éster ciclopentílico 30 se hidroliza en el ácido parental en la célula, donde se acumula y ejerce un mayor efecto inhibidor.
- HDAC
- U937 (línea celular monocítica) HCT116 (línea celular no monocítica)
- Compuesto
- CI50 (nM) proliferación celular Ácido producido1 ng/ml CI50 (nM) proliferación celular Ácido producido1 ng/ml
- Compuesto modulador no modificado (7)
- No aplicable No aplicable
- (Compuesto modulador modificado (24):
- 2 La cantidad de ácido producido tras la incubación del compuesto modificado (compuesto 24) durante 80 minutos en el ensayo de carboxilesterasa de rotura celular descrito anteriormente.
Los resultados anteriores muestran que:
i. el compuesto no modificado (compuesto (7) no muestra selectividad entre una línea celular monocítica y no monocítica, mientras que esto se puede conseguir uniendo un motivo éster adecuado, como en el compuesto 24. 10
ii. esta selectividad se correlaciona con la mejora de la escisión del éster en ácido por la línea celular monocítica.
iii. la mejor actividad celular solo se be en la línea celular en la que se produce ácido, lo que indica que esta 15 mejora en la potencia celular se debe a la acumulación del ácido.
- Aurora quinasa A
- U937 (línea celular monocítica) HCT116 (línea celular no monocítica)
- Compuesto
- CI50 (nM) proliferación celular Ácido producido1 ng/ml CI50 (nM) proliferación celular Ácido producido1 ng/ml
- Compuesto modulador no modificado (10)
- NA NA
- (Compuesto modulador modificado (25):
- 2 La cantidad de ácido producido tras la incubación del compuesto (25) durante 80 minutos en el ensayo de carboxilesterasa de rotura celular descrito anteriormente.
Los resultados anteriores muestran que: 20
i. El compuesto no modificado (compuesto (10) no muestra selectividad entre una línea celular monocítica y no monocítica, mientras que esto se consigue uniendo un motivo éster adecuado, como en el compuesto 25.
ii. esta selectividad se correlaciona con la mejora de la escisión del éster en ácido por la línea celular 25 monocítica.
iii. La mejor actividad celular solo se be en la línea celular en la que se produce ácido, lo que indica que esta mejora en la potencia celular se debe a la acumulación del ácido.
- DHFR
- U937 (línea celular monocítica) HCT116 (línea celular no monocítica)
- Compuesto
- CI50 (nM) proliferación celular Ácido producido1 ng/ml CI50 (nM) proliferación celular Ácido producido1 ng/ml
- Compuesto modulador no modificado (2 G=N):
- No aplicable NA
- (Compuesto modulador modificado (5):
- 2 La cantidad de ácido producido tras la incubación del compuesto (5) durante 80 minutos en el ensayo de carboxilesterasa de rotura celular descrito anteriormente.
Los resultados anteriores muestran que:
i. el compuesto no modificado (compuesto 2 G = N) no muestra selectividad entre una línea celular monocítica y no monocítica, mientras que esto se consigue uniendo un motivo éster adecuado, como en el compuesto 5. 5
ii. esta selectividad se correlaciona con la mejora de la escisión del éster en ácido por la línea celular monocítica.
iii. La mejor actividad celular solo se be en la línea celular en la que se produce ácido, lo que indica que esta 10 mejora en la potencia celular se debe a la acumulación del ácido.
Claims (14)
- REIVINDICACIONES1. Un conjugado covalente de un éster de alfa-aminoácido y un inhibidor de la actividad de la enzima histona acetilasa intracelular diana para usar en un procedimiento de tratamiento del cuerpo humano o animal mediante terapia, donde 5el grupo éster del conjugado es hidrolizable por una o más enzimas carboxilesterasas intracelulares en el correspondiente ácido;el nitrógeno del grupo amino del aminoácido éster no está unido directamente a un resto carbonilo o se deja sin sustituir; y 10el alfa-aminoácido éster está conjugado con el inhibidor en una posición remota de la interfaz de unión entre el inhibidor y la enzima histona desacetilasa, donde la posición de la conjugación es remota cuando el conjugado tiene una potencia en un ensayo de actividad celular al menos tan alta como la del inhibidor no conjugado en el mismo ensayo, donde el ensayo de actividad celular es un ensayo de inhibición de la proliferación celular llevado a cabo en células de cáncer U937. 15
- 2. Un conjugado covalente de un éster de alfa-aminoácido y un inhibidor de la actividad de la enzima histona acetilasa intracelular diana para usar en un procedimiento de tratamiento del cuerpo humano o animal mediante terapia, dondeel grupo éster del conjugado es hidrolizable por una o más enzimas carboxilesterasas intracelulares en el correspondiente ácido;el nitrógeno del grupo amino del aminoácido éster no está unido directamente a un resto carbonilo o se deja sin sustituir; yel alfa-aminoácido éster está conjugado con el inhibidor de un modo tal que el modo de unión del inhibidor 25 conjugado y dicho correspondiente ácido a la enzima histona desacetilasa es el mismo que el del inhibidor no conjugado, donde el modo de unión es el mismo cuando el conjugado tiene una potencia en un ensayo de actividad celular al menos tan alta como la del inhibidor no conjugado en el mismo ensayo, donde el ensayo de actividad celular es un ensayo de inhibición de la proliferación celular llevado a cabo en células de cáncer U937.
- 3. Un conjugado covalente para usar de acuerdo con la reivindicación 1 o la reivindicación 2, donde el conjugado es para usar en el tratamiento de un trastorno proliferativo.
- 4. Un conjugado para usar de acuerdo con la reivindicación 1 o la reivindicación 2, donde el alfa-aminoácido éster conjugado covalentemente no es el elemento en C-terminal de un motivo dipeptídico del inhibidor conjugado. 35
- 5. Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones precedentes, donde el inhibidor es uno que se une no covalentemente a la enzima histona desacetilasa.
- 6. Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones precedentes, donde el alfa-aminoácido 40 éster está unido covalentemente al inhibidor a través de un radical enlazador.
- 7. Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones precedentes, donde el alfa-aminoácido éster está conjugado al inhibidor mediante el grupo amino del aminoácido éster.
- 8. Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones 1 a 7, donde el alfa-aminoácido éster está conjugado al inhibidor mediante el carbono alfa del aminoácido éster.
- 9. Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones precedentes, donde el éster es hidrolizable por las células que contienen una o más de las enzimas carboxilesterasa intracelulares hCE-1, hCE-2 y 50 hCE-3 en el correspondiente alfa-aminoácido.10, Un conjugado para usar de acuerdo con cualquiera de las reivindicaciones 1 a 7, donde el éster es hidrolizable por las células que contienen la enzimas carboxilesterasa intracelular hCE-1, en el correspondiente alfa-aminoácido y no por las células que contienen hCE-2 o hCE-3. 55
- 11. Un conjugado para usar de acuerdo con la reivindicación 10, donde el nitrógeno del grupo amino del aminoácido éster está sustituido pero no directamente unido a un grupo cabronilo.
- 12. Una composición farmacéutica para usar en un procedimiento de tratamiento del cuerpo animal o humano 60 mediante terapia, comprendiendo la composición un conjugado como se reivindica en cualquiera de las reivindicaciones a 1 a 11 y un vehículo farmacéuticamente aceptable de la misma.
- 13. Una composición farmacéutica para usar de acuerdo con la reivindicación 12, que está adaptada para administración tópica y en la que el conjugado (a) cuando el alfa-aminoácido éster está unido al inhibidor mediante 65 su grupo amino, el carbono adyacente al carbono alfa del alfa-aminoácido éster está monosustituido o (b) cuanto elalfa-aminoácido éster está unido al inhibidor a través de un átomo de carbono del aminoácido, el átomo adyacente al átomo de carbono del aminoácido está sustituido.
- 14. Un procedimiento in vitro para incrementar o prolongar de forma selectiva la potencia intracelular y/o e tiempo de residencia de un inhibidor de la actividad de la enzima intracelular diana histona desacetilasa y&o los monocitos 5 relacionados con otros tipos de células , que comprende tratar una población mixta de células con un conjugad del inhibidor de acuerdo con la reivindicación 11.
- 15. Un procedimiento para identificar un conjugado covalente de un éster de alfa-aminoácido de un inhibidor dado de la actividad de la enzima histona acetilasa intracelular diana, teniendo dicho conjugado una potencia celular mayor o 10 prolongada en relación con el inhibidor dado, donde el procedimiento comprende:(i) identificar una posición o posiciones sobre un inhibidor dado de la actividad de la enzima histona desacetilasa intracelular o sobre una pluralidad de inhibidores dados de la actividad de la enzima histona desacetilasa intracelular que comparten el mismo modo de unión para la enzima histona desacetilasa diana, estando dicha 15 posición o posiciones remotas con respecto a la interfaz d eunión entre el o los inhibidores y la enzima histona desacetilasa diana.(ii) modificar covalentemente el o los inhibidores mediante unión de un radical alfa aminoácido éster o una serie de diferentes radicales alfa aminoácido éster en una o más posiciones identificadas en (i).(iii) analizar el o los inhibidores conjugados con alfa-aminoácido preparados en la (ii) para determinar su 20 actividad contra la enzima histona desacetilasa diana; y(iv) A partir de los datos adquiridos en (iii), seleccionar una o más de las versiones de conjugado alfa aminoácido éster candidatos del o los inhibidores dados que producen modulación de la actividad de la histona desacetilasa dentro de las células, se convierte en y se acumula como el correspondiente ácido carboxílico dentro de las células y que muestran un incremento o prolongación de la potencia celular. 25
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0509226 | 2005-05-05 | ||
| GB0509226A GB0509226D0 (en) | 2005-05-05 | 2005-05-05 | Enzyme and receptor modulation |
| US68054205P | 2005-05-13 | 2005-05-13 | |
| US680542P | 2005-05-13 | ||
| PCT/GB2006/001635 WO2006117567A2 (en) | 2005-05-05 | 2006-05-04 | Alpha aminoacid ester-drug conjugates hydrolysable by carboxylesterase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2415244T3 true ES2415244T3 (es) | 2013-07-24 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES06727008T Active ES2415244T3 (es) | 2005-05-05 | 2006-05-04 | Conjugados de éster de aminoácido alfa-fármaco hidrolizables mediante carboxilesterasa |
| ES08075300.7T Active ES2577433T3 (es) | 2005-05-05 | 2006-05-04 | Conjugados éster de alfa aminoácido-fármaco hidrolizables por la carboxilesterasa |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES08075300.7T Active ES2577433T3 (es) | 2005-05-05 | 2006-05-04 | Conjugados éster de alfa aminoácido-fármaco hidrolizables por la carboxilesterasa |
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| Country | Link |
|---|---|
| CN (1) | CN101171039B (es) |
| CA (1) | CA2836827C (es) |
| DK (1) | DK1877098T3 (es) |
| ES (2) | ES2415244T3 (es) |
| GB (1) | GB0509226D0 (es) |
| NZ (1) | NZ561710A (es) |
| PT (1) | PT1877098E (es) |
| SG (1) | SG2014007512A (es) |
| SI (1) | SI1877098T1 (es) |
| ZA (1) | ZA200708283B (es) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR200201052T2 (tr) * | 1999-09-08 | 2003-01-21 | Sloan-Kettering Institute For Cancer Research | Yeni hücre farklılaştırıcı ajanlar sınıfı ve hıstone deacetylase inhibitörleri, ve burada kullanım yöntemleri |
| WO2005037272A1 (en) * | 2003-10-22 | 2005-04-28 | Arpida A/S | Benzimidazole derivatives and use thereof as peptide deformylase inhibitors |
-
2005
- 2005-05-05 GB GB0509226A patent/GB0509226D0/en not_active Ceased
-
2006
- 2006-05-04 CA CA2836827A patent/CA2836827C/en active Active
- 2006-05-04 NZ NZ561710A patent/NZ561710A/en not_active IP Right Cessation
- 2006-05-04 SI SI200631620T patent/SI1877098T1/sl unknown
- 2006-05-04 ES ES06727008T patent/ES2415244T3/es active Active
- 2006-05-04 PT PT06727008T patent/PT1877098E/pt unknown
- 2006-05-04 ES ES08075300.7T patent/ES2577433T3/es active Active
- 2006-05-04 SG SG2014007512A patent/SG2014007512A/en unknown
- 2006-05-04 CN CN200680014981.9A patent/CN101171039B/zh not_active Expired - Fee Related
- 2006-05-04 DK DK06727008.2T patent/DK1877098T3/da active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101171039B (zh) | 2013-01-23 |
| GB0509226D0 (en) | 2005-06-15 |
| CN101171039A (zh) | 2008-04-30 |
| DK1877098T3 (da) | 2013-07-08 |
| ES2577433T3 (es) | 2016-07-14 |
| ZA200708283B (en) | 2008-10-29 |
| PT1877098E (pt) | 2013-07-31 |
| SI1877098T1 (sl) | 2013-08-30 |
| NZ561710A (en) | 2010-08-27 |
| SG2014007512A (en) | 2014-03-28 |
| CA2836827A1 (en) | 2006-11-09 |
| CA2836827C (en) | 2016-05-03 |
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