EP2991643A1 - Prenylflavonoide zur behandlung eines melanoms - Google Patents
Prenylflavonoide zur behandlung eines melanomsInfo
- Publication number
- EP2991643A1 EP2991643A1 EP14713859.8A EP14713859A EP2991643A1 EP 2991643 A1 EP2991643 A1 EP 2991643A1 EP 14713859 A EP14713859 A EP 14713859A EP 2991643 A1 EP2991643 A1 EP 2991643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melanoma
- cells
- pharmaceutical composition
- skin
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
- A61K31/353—3,4-Dihydrobenzopyrans, e.g. chroman, catechin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
- A61K31/404—Indoles, e.g. pindolol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
- A61K31/404—Indoles, e.g. pindolol
- A61K31/4045—Indole-alkylamines; Amides thereof, e.g. serotonin, melatonin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0014—Skin, i.e. galenical aspects of topical compositions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
Definitions
- the malignant melanoma is a highly malignant tumor of the pigment cells, the so-called. Melanocytes. It tends to spread early metastases on lymphoid and bloodstreams and is the most frequently fatal skin disease with a rapidly increasing number of new cases worldwide.
- the melanoma usually develops from a precursor. This cell structure already contains melanoma cells, which are locally limited to the uppermost tissue layer. There is also talk of melanoma in situ.
- One of the precursors of malignant melanoma is called lentigo maligna.
- malignant melanoma In the literature at least five different subtypes of malignant melanoma are distinguished. The most common form is superficial spreading melanoma (SSM). The most aggressive form of malignant melanoma with the most unfavorable prognosis is nodular malignant melanoma (NMM). Other subtypes include lentigo- maligna melanoma (LMM), acrolentiginous melanoma (ALM) and amenalotic melanoma (AMM). Melanomas can metastasize into various organs, but there are no preferred target organs as in other tumors. Often, metastases are found in the liver, skin, lung, skeleton, and brain.
- SSM superficial spreading melanoma
- NMM nodular malignant melanoma
- Other subtypes include lentigo- maligna melanoma (LMM), acrolentiginous melanoma (ALM) and amenalotic
- a skin metastasis which is also referred to as secondary skin cancer or metastatic skin cancer, is understood to mean a lymphogenic or hematogenous sealing of primary skin malignancies or tumors of other organs in the skin.
- Malignant melanoma, breast carcinoma, gastric carcinoma, uterine carcinoma, bronchial carcinoma, rectal carcinoma or renal carcinoma are considered as causative primary tumors after decreasing frequency especially. They can occur anywhere on the body surface, preferably on the abdominal wall, trunk and capillaries.
- melanoma therapy is still the surgical removal of the primary tumor and excision of the metastases. Only premature and complete removal of the primary tumor can lead to healing. In later stages, when the tumor has already metastasized to the skin, lymph nodes and internal organs, the chance of a cure is low.
- alternative therapies are used and tested, which usually provide only a temporary improvement, but usually have no chance of recovery.
- chemotherapy with DTIC or Fotemustin
- vaccine therapy with antigen-presenting cells surgical procedures to reduce tumor mass or radiotherapy.
- Newer therapeutic approaches are based on the blockade of molecular processes in the signal transduction of the cell. For example, combinations of a classical chemotherapeutic agent with b-RAF kinase inhibitors such as sorafenib are used.
- IL-2 interleukin-2
- the surgical removal of the melanoma, its precursors or metastases is not always feasible.
- the procedure is also stressful for the patient, postoperatively painful and time-consuming and logistically complex, especially at long journeys to the clinic or critical general condition of the patient.
- the procedure is associated with scarring and generally carries the risk of wound infections.
- IL-2 intralesional injection of IL-2 also has serious disadvantages. It must be performed experimentally under study conditions for a long period of time three times a week in a skin center. In addition to the high cost and associated costs, this treatment option is often associated with severe, partial systemic side effects. The application itself is painful and carries the risk of skin infections. In addition, IL-2 hypersensitivity is only suitable for skin metastases ⁇ 5mm in diameter and shows only moderate response rates.
- PN prenylnarogenin
- the pharmaceutical composition of the invention may have a pharmaceutically acceptable formulation.
- Pharmaceutically acceptable formulations are well known in the art. For example, reference is made to the paper by Kibbe A. (2000), Handbook of Pharmaceutical Excipients, 3rd Ed., American Pharmaceutical Association and Pharmaceutical Press.
- the pharmaceutical composition of the invention may further contain additives. These include any compound or composition which is advantageous for use in the invention, including salts, binders, solvents, dispersants and other substances commonly used in the formulation of pharmaceuticals.
- the pharmaceutical composition comprises 6-prenylnaringenin (6-PN) and / or 8-prenylnaringenin (8-PN).
- 6-PN and 8-PN are so-called prenylflavonoids. These are found in low concentrations, for example in hops and in beer.
- Flavonoids are derived from 2-phenylchrom-4-one. 6-PN and 8-PN are isomers. The difference lies in the position of the five carbonyl group. 6-PN and 8-PN are products of a cyclization reaction of a common precursor molecule, desmethylxanthohumol, a polyphenol based on the structure of 1, 3-diphenyl-2-propene-1-one. Both molecules exist as enantiomers (R, S).
- 8-PN has a strong binding affinity for estrogen receptors of rat uterus and has been identified as a potent phytoestrogen due to a characteristic spacing of the hydroxyl groups that mimic beta-estradiol; see. Milligan et al. (1999), Identification of potent phytoestrogens in hops (Humulus lupulus L.) and beer, J. Clin. Endocrinol. Metab. 84, 2249-2252.
- flavonoids In addition to the antioxidant properties, some flavonoids also show anticancer properties; see. Hodek et al. (2002) Flavonoids-potent and versatile biologically active compounds interacting with cytochromes p. 450, Chem. Biol. Interact. 139, 1 - 21; Son et al. (2007) Pomiferin, histone deacetylase inhibitor isolated from fruits of Maculea pomifera, Bioorg. Med. Chem. Lett, Vol. 17 (17), 4753-4755; Cariae et al. (2001) Artelastocarpine and carpelastofuran, two new flavones, and cytotoxicities of prenyl flavonoids from Artocarpus elasticus against three cancer cell lines, Planta. Med.
- 8-PN inhibits angiogenesis induced by basic fibroblast growth factor and vascular endothelial growth factor in a three-dimensional collagen gel in vitro and in chorioallantoic membrane assays in vivo; see. Pepper et al. (2004), 8-prenylnaringenin, A novel phytoestogen, inhibits angiogenesis in vitro and in vivo, J. Cell Physiol. 199, 98-107.
- 8-PN mimics the effects of 17 ⁇ -estradiol on breast cancer cells MCF-7; see. Rong et al. (2001), 8-prenylnaringenin, the phytoestrogen in hops and beer, upregulates the function of the e-cadherin / catenin complex in human mammary carcinoma cells, Eur. J. Cell Biol. 80, 5, 580-585.
- 8-PN also induces apoptosis in MCF7 cells and in a leukemia burden resistant to a variety of drugs; see. Brunei et al. (2007), 8-prenylnaringenin, inhibits estrogen receptor-mediated cell growth and induce apoptosis in MCF-7 breast cancer cells, J. Steroid. Biochem. Mol. Biol. 107, 140-148, and Diller et al. (2007), Ability of prenylflavanones present in hops to induce apoptosis in a human Burkitt lymphoma cell line, Planta Med. 73, 755-761.
- 6-PN and 8-PN show antiproliferative effects on the human prostate cancer cell lines PC-3 and DU 145 in vitro; Delmulle et al. (2006), Antiproliferative properties of prenylated flavonoids from hops (Humulus lupulus L.) in human prostate cancer cell lines, Phytomedicine 13, 732-734. This occurs in the absence of caspase-3 activation and typical apoptotic morphological features; Delmulle et al. (2008), Treatment of PC-3 and DU 145 prostate cancer cells by prenylflavonoids from hop (Humulus lupulus L.) induces a caspase-independent form of cell death, Phytother. Res. 22, 197-203.
- 6-PN and 8-PN are potent inhibitors of histone deacetylases (HDACs) of classes I, II and IV and induce hyperacetylation of the histone protein H3.
- HDACs histone deacetylases
- the inventors were able to demonstrate this using the example of various tumor cell lines, in particular using the two melanoma cell lines SK-MEL-28 and BLM. Further, the inventors have been able to show on a variety of tumor cell lines that 6-PN and 8-PN show strong apoptosis-independent antiproliferative properties in vitro and low toxicity in vivo. In human epidermal skin reconstructs, both PNs show greatly inhibited cell proliferation and tumor cell invasion.
- HDACs histone deacetylases
- the inventors were able to observe the induction of autophagy in tumor cells after treatment with 6-PN and 8-PN.
- 6-PN and 8-PN are potent phytotherapeutic epigenetic agents for melanoma prevention, melanoma therapy, treatment and prophylaxis of cutaneous and mucosal metastases of any primary tumor.
- the pharmaceutical composition for topical application further preferably for topical application to the skin is formed.
- Recurrence can thus be counteracted, which is only partially or not the case in surgical removal as well as IL2 injection.
- the topical application also enables effective melanoma prophylaxis, the treatment of melanoma precursors or after excision of a primary melanoma the reduction of the risk of primary melanoma formation or a melanoma recurrence.
- the active compounds 6-PN and / or 8-PN may also be encapsulated, for example in liposomes.
- the composition according to the invention may be in the form of a single preparation in which 6-PN and / or 8-PN is / are provided as sole active agent (s). According to a development, however, the pharmaceutical composition has another against melanoma and / or melanoma precursors and / or skin and / or
- This measure can make synergistic effects available that arise through the interaction of 6-PN and / or 8-PN and the other active ingredient. Also, this can simplify the application by the patient, who may need to apply only the pharmaceutical composition of the invention instead of two preparations.
- the further active ingredient is preferably a necrosin inhibitor.
- necrosis inhibitor is IM-54.
- Another object of the present invention relates to the use of prenylnaringenin, preferably 6- and / or 8-prenylnaringenin, as an epigenetically active drug substance, more preferably for the prophylaxis and / or treatment of a melanoma and / or a melanoma precursor and / or a Skin and / or mucosal metastasis of any primary tumor.
- Another object of the present invention relates to the use of prenylnaringenin, preferably 6- and / or 8-prenylnaringenin, as histone deacetylase inhibitor (HDACi).
- HDACi histone deacetylase inhibitor
- Another object of the present invention relates to a method for the prophylaxis and / or treatment of a melanoma and / or a melanoma precursor and / or a skin and / or mucosal metastasis of any primary tumor in a living being, preferably a human having the following steps (1) providing the pharmaceutical composition according to the invention, and (2) applying the pharmaceutical composition to the skin of the animal, preferably the melanoma and / or the melanoma precursor and / or the skin and / or mucosal metastasis.
- FIG. 2 A docking analysis in silico with 6-PN and 8-PN illustrates the inhibitory potential for human-derived class I and II HDACs.
- A Results of docking analysis in silico of 6-PN and 8-PN with crystal structures of HDAC2 (Class I) and HDAC4 (class II). The analysis shows the predicted binding mode of 6-PN and 8-PN in the HDAC binding pocket. Both molecules are predicted to interact with the zinc ion as well as the other residues of the catalytic center. Docking analyzes of 6-PN and 8-PN in the individual HDAC binding pockets were performed using GOLD (version 4.1 .2) and MOE (version 2009.10).
- C Specific Fluometric Profiling Assay Using Class I, II and IV Recombinant Human HDACs. Specific inhibition values were generated for treatment with 100 ⁇ M 6-PN and 8-PN. TSA was used as a reference inhibitor (HDAC1, 2, 3, 6, 10, 1 1: 10 nM, HDAC4, 8, 9: 1 ⁇ , HDAC5, 7:10 ⁇ ). The inhibition values for each HDAC were obtained by a double-set experiment. Shown are the mean ⁇ S.A.
- Fig. 3 Docking analysis in silico with 6-PN and 8-PN for HDAC2, HDAC4,
- HDAC7 and HDAC8 Results of docking analysis in silico of 6-PN and 8-PN with crystal structures of HDAC8 (class I) and HDAC 7 (class II). The analysis shows the predicted binding mode of 6-PN and 8-PN in the different HDAC binding pockets. Both molecules are predicted to interact with the zinc ion and other catalytic site residues.
- B Representation of a 2D Ligand plots of 6-PN and 8-PN together with interacting amino acids (circles) of the corresponding binding pocket. Shown are hydrophobic, polar, acidic and basic radicals. Halo-like slices around the amino acids are calculated based on the reduction in solvent exposure by the ligand.
- the same protein loading was confirmed by staining with vinculin (bottom rows).
- Fig. 5 Real-time cell monitoring of melanoma cells BLM and SK-MEL-28 treated with 6-PN and 8-PN.
- BML and SK-MEL-28 cells were treated 24 hours after plating with varying concentrations of 6-PN and 8-PN (20 ⁇ , 50 ⁇ and 100 ⁇ ) over a period of 104 hours.
- Cellular impedance was measured over the entire observation period using the xCELLIGENCE TM SP system and displayed by cell index (Cl). All Cl values were normalized just prior to treatment. Normalized Cl values are shown every four hours.
- 0.1% Triton X-100 was used to induce cell death. Shown are the mean ⁇ SD of three independent experiments, each performed in triplicate (B, C).
- the MUH proliferation assay with BLM and SK-MEL-28 melanoma cells treated with 6-PN and 8-PN (0.1 ⁇ to 100 ⁇ ), TSA and SAHA (both at 100 ⁇ ), with and without addition of the necrosis inhibitor IM-54 (5 ⁇ ) showed a concentration-dependent reduction in cell proliferation> 90% in both cell lines by the PNs, which is partially inhibited by IM-54. Shown are the mean ⁇ SD; the experiments were performed in quadruplicate.
- D The MUH proliferation assay was repeated under the same conditions on human fibroblasts (FF868) and melanocytes (HEM1).
- FIG. 7 100 ⁇ 6-PN and 100 ⁇ 8-PN do not induce cleaved caspase-3 in the melanoma cells SK-MEL-28.
- a band for caspase-3 25 kDa
- no additional band for cleaved caspase-3 expected size 17 kDa
- FIG. 8 6-PN and 8-PN lowers the expression of pS6p via the downregulation of pERK / pP90.
- Western blot analysis of the melanoma SK-MEL-28 cells 1 hour, 2 hours, 4 hours, 12 hours and 24 hours after treatment with 100 ⁇ M 6-PN or 8-PN.
- 6-PN and 8-PN indu- characterized down-regulation of pS6p accompanied by a decrease of pERK and pP90, respectively.
- 6-PN and 8-PN induced a time-dependent decrease in p70s6 kinase.
- Figure 10 100 ⁇ 6-PN and 100 ⁇ 8-PN do not induce apoptosis in SK-MEL-28 melanoma cells.
- A Cell cycle FACS analyzes of Pl-stained melanoma cells BLM and SK-MEL-28. 100 ⁇ 8-PN induced a G2 arrest in both cells.
- B FACS analyzes of BLM and SK-MEL-28 melanoma cells treated with 100 ⁇ 6-PN or 8-PN and stained for annexin V / PI; Staurosporine was used as a control for apoptosis induction and DMSO as a vehicle control. Treatment with PN did not increase the number of annexin V-positive (apoptotic) cells.
- FIG. 1 6-PN and 8-PN reduce the proliferation and invasion of BLM and LOXIMVI melanoma cells in human epidermal skin constructs and induce low embryotoxicity.
- BLM melanoma cells and keratocytes were plated on the surface of a collagen matrix which was provided with fibroblasts. After 16 days, a keratinizing stratified epithelium with a rudimentary corium forms. Untreated MIB1-positive (proliferating) control BLM cells form an a large tumor in the epidermal part of the reconstruct and invade the corium (upper row). For the untreated BLM cells, 103 ⁇ 15 MI B-positive and 39 ⁇ 13 invasive cells were counted per high power field (40X magnification).
- the inventors have tested a total of 19 different tumor cell lines including five melanoma cell lines, two liver cancer cell lines, three breast cancer cell lines, three colon cancer cell lines, two prostate cancer cell lines, two lung cancer cell lines and two renal cancer cell lines:
- the metastatic melanoma cell lines SK-MEL-28, LOXIMVI and BLM, the colon cancer cells HT29 and the breast cancer cells MCF7 are described below. These were cultured in RPMI 1640 medium supplemented with 10% fetal bovine serum (FBS), 1% penicillin and 1% streptomycin. All cell cultures were maintained at 37 ° C in an atmosphere of 95% air and 5% C0 2 at 100% humidity. Docking analyzes in silico
- HDACi activity was performed by the HDAC assay kit as described by the manufacturer (Active Motif, La Hulpe, Belgium) using 6-PN and 8-PN at increasing concentrations (5 ⁇ , 10 ⁇ , 20 ⁇ , 50 ⁇ and 100 ⁇ ).
- the human HDAC profiling assay was performed on the basis of the Fluor de Z.ys TM technology from Scottish Biomedical, Glasgow, United Kingdom. The percent inhibition values of 100 ⁇ 6-PN and 100 ⁇ 8-PN against the human HDAC enzymes HDAC1, HDAC2, HDAC3, HDAC4, HDAC5, HDAC6, HDAC7, HDAC8, HDAC9, HDAC10 and HDAC1 1 were determined. All assays were performed in 1% DMSO (final concentration). immunoblotting
- the cells were plated out in triplicate in 96-well plates at a density of 2500 cells per well in 50 ⁇ M medium (5 x 10 4 cells per milliliter). After 24 hours, the medium was replaced with one containing 6-PN, 8-PN (dissolved in DMSO), TSA (dissolved in EtOH) or SAHA (dissolved in DMSO) at the concentrations to be tested with or without addition of the necrosis inhibitor. tor IM-54 at 5 ⁇ (Calbiochem, Darmstadt, Germany). Cells treated with culture medium, with or without DMSO, served as controls. The assay was started after a 24 hour incubation.
- the human melanoma cell lines BLM and SK-MEL-28 (2.5 x 10 3 cell well) were plated in 96-well plates. The cells were treated after 24 hours with various concentrations of 6-PN or 8-PN (20 ⁇ , 50 ⁇ and 100 ⁇ ) and by electrical impedance measurements at 15-minute intervals for a total of 104 hours and using the xCELLigencer® SP Systems (Roche Applied Science) monitors. The cell index values were determined using the RTCA software
- the apoptosis induction test was carried out with the human proteomic profiler apoptosis antibody array kit (R & D Systems, Wiesbaden, Germany) as described by the manufacturer after treatment of the melanoma cells SK-MEL-28 with 100 ⁇ 6-PN or 100 ⁇ 8-PN for 4 hours.
- Organ-specific epidermal skin reconstructions were carried out with the human proteomic profiler apoptosis antibody array kit (R & D Systems, Wiesbaden, Germany) as described by the manufacturer after treatment of the melanoma cells SK-MEL-28 with 100 ⁇ 6-PN or 100 ⁇ 8-PN for 4 hours.
- Fertilized eggs from Leghorn chickens (Gallus gallus domesticus) were incubated at 38 ° C in a temperature-controlled, humidified breeder.
- the eggs were prepared after approximately 48 to 52 hours of incubation (corresponding to stages 12 to 13), which corresponds to approximately 6 human gestational weeks.
- a small hole was made in the lateral side of the eggs and 2 ml of egg whites were removed from the lower blastoderm with a cannula.
- the egg was prepared for fenestration using a hacksaw to generate a rectangular breaking point on the shell around the previously marked point (about 15 x 25 mm in size).
- the previously defined "window” was opened by removing the egg shell with curved tweezers.
- the embryo is already visible on top of the blastoderm.
- HDAC2 and HDAC8 members were initially screened in s / 7 / co docking analyzes with human HDAC class I HDAC4 and HDAC7 (Figs. 2, 3).
- Important features for a HDACi are the structural ability to fit into the binding pocket of the HDAC enzymes and the capacity to interact with key residues such as the zinc ion in the catalytic site. According to the predicted docking analysis interactions, both 6-PN and 8-PN theoretically both requirements regarding HDAC2, HDAC4 (Fig. 2A) or HDAC7 and HDAC8, respectively (Fig. 3).
- 6-PN and 8-PN yielded higher gold scores than TSA or SAHA for HDAC4, HDAC7, and HDAC8, and gold scores comparable to (6-PN) or lower (8-PN) than TSA or SAHA for HDAC2 with those mentioned above restrictions.
- Table 2 Gold scores for 6-PN and 8-PN. Calculated GoldScores for 6-PN and 8-PN based on the corresponding docking analysis with HDAC2, 4, 7 and 8. The docking and following analyzes were performed using GOLD (version 4.1.2).
- 6-PN and 8-PN appear to have inhibitory activity against class I and II HDAC enzymes compared to standard HDACi such as TSA and SAHA.
- standard HDACi such as TSA and SAHA.
- v / ' iro-screening confirms the suspected pan-HDACi activity of 6-PN and 8-PN.
- 6-PN and 8-PN were screened in a HDACi assay.
- 6-PN and 8-PN showed dose-dependent HDAC inhibitory activity (Fig. 2B).
- Even low concentrations of 6-PN (5 ⁇ ) and 8-PN (10 ⁇ ) showed inhibitory effects, and 100 ⁇ resulted in an inhibition rate> 50% (FIG. 2B).
- the human me- palpation melanoma cell lines BLM and SK-MEL-28 were treated once with increasing concentrations of 6-PN or 8-PN (20 ⁇ , 50 ⁇ and 100 ⁇ ) and monitored continuously for a total of 104 hours using a real-time cell monitor assay ( Fig. 5A).
- the cell impedance, represented as the cell index (Ci) was measured, reflecting changes in cellular status.
- Ci the cell index
- the normalized CI of BLM and SK-MEL-28 cells treated with 6-PN and 8-PN decreased over time compared to the control for each concentration tested.
- an incubation with 60 ⁇ and 100 ⁇ 6-PN and 8-PN showed an increased and rapid change in the measured Ci.
- hyperacetylation of histone H3 after treatment with the PNs corresponded to a delayed decrease in Ci.
- PNs also affect the proliferation of benign cells.
- human fibroblasts (FF) and foreskineal melanocytes (HEM1) were treated with the same concentrations of 6-PN and 8-PN, and proliferation was assayed using the proliferation assay described above.
- Fibroblast proliferation was scarcely affected by PN treatment ( Figure 5D), whereas proliferation of melanocytes decreased significantly at higher concentrations of PNs ( Figure 5E).
- TSA and SAHA no reduced proliferation of fibroblasts or melanocytes could be detected.
- 6-PN and 8-PN effectively reduce cell proliferation in all cancer cells tested (see Table 1); in particular, melanoma cells were highly accessible for treatment with the two prenylflavonoids.
- IM-54 was able to partially block PN-induced cell death in BLM and SK-MEL-28 cells, suggesting that the antiproliferative and cytotoxic cascade initiated by PN may necrosis in some of the melanoma cells induced.
- S6P could be phosphorylated by another mechanism.
- activated ERK can phosphorylate the p90 ribosomal S6 kinase (pP90).
- pP90 also phosphorylates S6P (in addition to the P70S6 kinase). Since pP70S6 kinase was not present in the cells used (SK-MEL-28 and BLM), it was hypothesized that phosphorylation of S6P occurs via the pERK / pP90 signaling pathway, independent of P70S6 signaling.
- FACS analysis showed induction of G2 arrest in BLM and SK-MEL-28 cells 48 hours after treatment with 100 ⁇ 8-PN compared to DMSO-treated control cells (BLM: 99.6% vs. 30.4%) %; SK-MEL-28: 49.8% vs. 20.1% of the cells in the G2 phase); the sub-G1 fraction (apoptotic cells) was unaffected by 8-PN ( Figure 10A).
- the LOXIMVI cells (aligned along the dermal-epidermal border and in prominent tumor cell nests in the dermal part of the aggregates) were 100% MIB1 positive ( Figure 11 B).
- the treatments with 6-PN and 8-PN each resulted in the completely inhibited cell proliferation of the LOXIMVI cells: only nests of dead LOXIMVI cells could be detected in the dermal part of the skin reconstructs (FIG. 11B).
- PN prenylflavonoid or prenylnaringenin
- 6- and / or 8-prenylnaringenin 6-PN, 8-PN
- PN prenylflavonoid or prenylnaringenin
- 6-PN, 8-PN 6- and / or 8-prenylnaringenin
- a melanoma and / or a melanoma precursor and / or a skin and / or mucosal metastasis are suitable.
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DE102013104342.9A DE102013104342A1 (de) | 2013-04-29 | 2013-04-29 | Pharmazeutische Zusammensetzung |
PCT/EP2014/056464 WO2014177335A1 (de) | 2013-04-29 | 2014-03-31 | Prenylflavonoide zur behandlung eines melanoms |
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EP2991643A1 true EP2991643A1 (de) | 2016-03-09 |
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EP (1) | EP2991643A1 (de) |
DE (1) | DE102013104342A1 (de) |
WO (1) | WO2014177335A1 (de) |
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DE102013017165A1 (de) | 2013-10-16 | 2015-04-16 | Eberhard Karls Universität Tübingen Medizinische Fakultät | Zusammensetzung zur Immunmodulation |
WO2020051216A1 (en) * | 2018-09-05 | 2020-03-12 | Lupin Inc. | Deuterated secnidazole for use in the treatment of bacterial vaginosis and methods and uses thereof |
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US7736677B2 (en) * | 2001-06-20 | 2010-06-15 | Metaproteomics, Llc | Xanthohumol and tetrahydro-isoalpha acid based protein kinase modulation cancer treatment |
EP1360959A1 (de) * | 2002-05-10 | 2003-11-12 | Schering Aktiengesellschaft | Verwendung von 8-Prenylflavanonen zur Antiangiogenese-Therapie und zur fibrinolytischen Therapie |
US20090209654A1 (en) * | 2005-07-29 | 2009-08-20 | Eric Kuhrts | Prenylflavonoid Formulations |
EP1928248A4 (de) * | 2005-08-09 | 2009-09-16 | Metaproteomics Llp | Proteinkinase-modulation durch hopfen- und akazien-produkte |
EP2392325A1 (de) * | 2010-06-04 | 2011-12-07 | Universitätsklinikum Münster | Neue Verbindungen zur Prävention und/oder Behandlung von Osteoarthrose |
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2013
- 2013-04-29 DE DE102013104342.9A patent/DE102013104342A1/de not_active Withdrawn
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2014
- 2014-03-31 WO PCT/EP2014/056464 patent/WO2014177335A1/de active Application Filing
- 2014-03-31 EP EP14713859.8A patent/EP2991643A1/de not_active Withdrawn
-
2015
- 2015-10-28 US US14/925,859 patent/US20160067211A1/en not_active Abandoned
Non-Patent Citations (3)
Title |
---|
L. DELMULLE ET AL: "Treatment of PC-3 and DU145 prostate cancer cells by prenylflavonoids from hop (Humulus lupulus L.) induces a caspase-independent form of cell death", PHYTOTHERAPY RESEARCH., vol. 22, no. 2, 1 January 2008 (2008-01-01), GB, pages 197 - 203, XP055332213, ISSN: 0951-418X, DOI: 10.1002/ptr.2286 * |
See also references of WO2014177335A1 * |
SEEMA NOOR ET AL: "6- and 8-prenylnaringenin, novel natural histone deacetylase inhibitors found in hops, exert antitumor activity on melanoma cells", EXPERIMENTAL DERMATOLOGY, vol. 22, no. 3, 12 March 2013 (2013-03-12), pages e38 * |
Also Published As
Publication number | Publication date |
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US20160067211A1 (en) | 2016-03-10 |
DE102013104342A1 (de) | 2014-10-30 |
WO2014177335A1 (de) | 2014-11-06 |
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