WO2020206213A1 - Method of inhibiting trem-1 - Google Patents
Method of inhibiting trem-1 Download PDFInfo
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- WO2020206213A1 WO2020206213A1 PCT/US2020/026526 US2020026526W WO2020206213A1 WO 2020206213 A1 WO2020206213 A1 WO 2020206213A1 US 2020026526 W US2020026526 W US 2020026526W WO 2020206213 A1 WO2020206213 A1 WO 2020206213A1
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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
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin
-
- 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
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
Definitions
- Nuclear receptors comprise a superfamily of ligand-dependent transcription factors, including receptors for thyroid hormones, steroid hormones, retinoids, fatty acids, sterols and oxysterols. These receptors display a conserved domain structure with a variable amino-terminal A/B domain, a highly conserved two zinc finger DNA-binding domain (C domain), a hinge (domain D) and a carboxy -terminal ligand-binding domain (LBD; E domain) containing activation function 2 (AF2) critical for co-regulator interactions.
- the LBDs of the nuclear receptors are multifunctional and are predominately a-helical in nature, characteristic of all NRs.
- LBP ligand binding pocket
- SRC2 ligand binding protein
- NCoR corepressors
- SMRT coregulatory proteins
- NRs bind to specific DNA sequences (receptor binding sequences) found throughout the genome including clusters in promoter and enhancer regions of genes under their control.
- Receptor binding sequences (RBSs) that are functional in vivo are referred to as response elements (REs) 2 .
- ROR RAR-related orphan receptor
- RORa ROR-related orphan receptor
- RORy RORy
- RORa is expressed in the liver, skeletal muscle, skin, lungs, adipose tissue, kidney, thymus and brain a m0 re restricted pattern of expression and is limited to the central nervous system and bone 30, 47 .
- RORy is most highly expressed in the thymus, but significant expression is also found in the liver, skeletal muscle, adipose tissue and kidney 48 .
- RORy 2 isoform referred to as RORyt
- RORyt The RORy 2 isoform, referred to as RORyt, is exclusively expressed in a subset of immune cells and has garnered much attention due to its role in differentiation of TH17 cells 3 . Regardless, RORyl and RORyt have identical ligand-binding domains suggesting that most if not all RORy targeting ligands modulate both isoforms.
- RORy The ROR NR1F subfamily has been the target of intense drug discovery efforts given that the RORy2 isoform, referred to as RORy, is exclusively expressed in a subset of immune cells gamering much attention due to its role in differentiation of TH17 cells 3 .
- RORy the RORy2 isoform
- SR2211 administration of the small molecule selective RORy inverse agonist SR2211 was efficient at pharmacological repression of the receptors activity affording a robust therapeutic effect in CIA mice.
- SR2211 is described in U.S. Pat. No. 9,586,928 and has the chemical structure shown below:
- the present invention is based on the discovery that SRI 903 (chemical structure shown in FIG. 1), which is a close chemical analog of SR2211, had nearly identical activity on RORy but has a broadened nuclear receptor (NR) activity profile with modest agonism of LXR and mild repressive or inverse agonism of PPARy; and further that SRI 903 blocks Triggering Receptor Expressed on Myeloid cells 1 (TREM-1).
- SRI 903 chemical structure shown in FIG. 1
- NR nuclear receptor
- the invention is therefore directed to a method of inhibiting TREM-1 in a subject in need thereof comprising administering to said subject an effective amount of a compound having the formula (I):
- Ri is C1-C4 alkyl substituted with OR or C1-C4 fluoroalkyl substituted with OR;
- R2, R4, and Rs are each independently selected from the group consisting of hydrogen, halo, C1-C4 alkyl, and C1-C4 alkoxy;
- R3 is C1-C4 alkyl
- R is hydrogen or C1-C4 alkyl; or a pharmaceutically acceptable salt thereof.
- the compound is SRI 903.
- the subject or patient is suffering from TREM-1 mediated inflammation or chronic inflammation.
- administration of the compound of Formula (I) or SRI 903 preserves the thymus or protects against loss of thymocytes, for example, as compared to the
- RORy selective inverse agonist such as SR2211 and/or as compared to that before or without administration of the compound.
- the present disclosure provides a method for treating a subject suffering from a disease or condition that is related to triggering receptor expressed on myeloid cells-1 (TREM-1), comprising administering to the patient a therapeutically effective amount of the compound SRI 903 or a pharmaceutically acceptable salt thereof:
- the invention is directed to a method of inhibiting TREM-1 in a subject in need thereof comprising administering to said subject an effective amount of a compound that is a RORy inverse agonist and is also an inverse agonist of PPARy and/or an agonist of LXR.
- the compound is a RORy inverse agonist, an inverse agonist of PPARy and an agonist of LXR.
- FIGs. 1A to IE Pan modulator with poly-pharmacology.
- FIG 1A shows the chemical structures of SR1903, SR2211 and GW3965.
- FIG. IB shows the results of Gal4- RORy, Gal4-RORy, Gal4-RORy, Gal4-LXRa, and Gal4-PPARy co-transfection assays in HEK293 cells comparing GW3965 to SRI 903.
- FIG. 1C shows the results of Lanthascreen competition binding assay with DMSO only, rosiglitazone and SRI 903 in 12-point dose- response.
- FIG. IE shows in silico docking of SRI 903 to PPARy, RORy and LXR LBD shows putative protein-ligand interactions driving observed poly pharmacology.
- SRI 903 is represented as orange sticks while PPARy, RORy, and LXR are depicted as blue ribbons respectively. Specific residues driving the interaction labelled and shown as sticks as well.
- FIG. IF are graphs showing RORy target genes ( IL17A and IL17F) expression in EL4 cells. 5mM SR1903 and GW3965 were incubated overnight followed by PMA/ionomycin stimulation for 6 hrs.
- FIGs. 2A-2D LPS signaling was repressed by the poly-pharmacological modulator SRI 903.
- FIG. 2A shows a heat map of log2 fold change in expression of TREM-1 signaling pathway genes in LPS-stimulated RAW264.7 cells treated with SR1903 versus to LPS- stimulation alone.
- FIG. 2B are graphs showing TREM-1 gene expression by q-PCR.
- FIG. 2C is a graph showing TREM1 promoter regulation by LXRP or PPARy or RORy ⁇ SRI 903.
- FIG. 2D shows TREM-1 surface expression after 26 hr stimulation with LPS or 50 hr stimulation. All experiments were performed with 3 biological replicates and the median value of TREM-1 fluorescence was represented by the graph on the bottom.
- FIGs. 3A-3D Comparison with LXR agonist.
- FIG. 3A shows a heat map of log2 fold change in LXR activation in LPS-stimulated RAW264.7 cells treated with SR1903 vs to LPS-stimulation alone.
- FIG. 3B are graphs showing inflammatory cytokines, non inflammatory fatty acid synthesis genes, cholesterol efflux in LPS-stimulated RAW264.7 cells treated with SRI 903.
- FIGs. 3C and 3D show log2 fold change of SENP3 expression in RAW264.7 cells mRNAseq and q-PCR.
- FIGs. 4A-4G Comparison with LXR agonist and SRI 903 on the onset of arthritis in mice with collagen-induced arthritis (CIA) and in vivo efficacy of SRI 903 in a mouse model of metabolic disease (DIO) and chronic inflammation.
- FIG. 4B shows the results of glucose tolerance test (GTT) after i.p. challenge with lg/kg of glucose.
- FIG. 4C shows serum concentrations of glucose, cholesterol, HDL (high density lipoprotein), LDL (low density lipoprotein), TAG (triacylglycerol), and FFA (free fatty acid).
- FIG. 4D shows circulatory insulin and leptin levels after overnight fasting and feeding condition.
- FIG. 4E shows the average difference in weight of SRI 903- or vehicle-treated DIO mouse at study’s end. lost body weight and NMR.
- FIG. 4F is a graph showing leptin sensitivity, as measured by the food intake after leptin administration on day 10, dayl 1, and day 12.
- FIG. 5A-5C PPARy and RORy expression during adipogenesis of OP9 cells.
- FIG. 5A shows mRNA expression of PPARy and RORy in adipogenesis of OP9 cells for 4 days with/without SR1903.
- FIG. 5B shows the formation of lipid droplet of OP9 cells.
- FIG. 5C shows induction of RORy expression by Rosiglitazone and suppression of PPARy expression by SR1903 during OP9 adipogenesis.
- FIGs. 6A and 6B are graphs showing HDX kinetics of representative peptic peptides derived from the PPARy-LBD and LXRa-LBD in complex with SRI 903.
- the top left of FIG. 6A shows differential HDX analysis of SRI 903 showed evidence of direct interaction with decreased deuterium exchange within Helix 3 region of PPARy LBD, a region of the receptor critical for ligand engagement.
- the top right of FIG. 6A shows SRI 903 interaction with LXRa LBD resulted in an increase in deuterium exchange in H2 region of LXRa LBD suggesting that SRI 903 displaces endogenous ligand in the purified protein.
- FIG. 6A are graphs showing HDX kinetics of representative peptic peptides derived from the PPARy-LBD and LXRa-LBD in complex with SRI 903.
- the top left of FIG. 6A shows differential HDX analysis of SRI 903 showed evidence of direct interaction with decreased deuter
- 6B shows differential HDX perturbation view for PPARy LBD in the absence and presence of SRI 903 or rosiglitazone control, and LXRa in the absence and presence of SR1903 or GW3965. Percentages of deuterium differences are color-coded according to the smooth color gradient key displayed at the bottom.
- FIG. 7 NR box peptide recruitment assay.
- a TR-FRET-based interaction assay was used.
- Tb-anti-His antibody (10 nM; Invitrogen) and indicated ligand (luM) were incubated in complete TR-FRET PPAR assay buffer (Invitrogen) containing 10 nM purified His-PPARy2 for 1 hr at room temperature.
- 450nM FITC-labeled peptides p300 sequence:
- ASKHKQLSELLRSGSS (SEQ ID NO: 1) was added and incubated for additional two hours (hrs) at room temperature (in dark).
- the FRET signal was measured by excitation at 340 nm and emission at 520 nm for fluorescein and 490 nm for terbium in Perkin Elmer ViewLux ultra HTS microplate reader.
- the fold change over DMSO was calculated by 520 nm/490 nm ratio. Each sample condition has four replicates. Graphs were plotted in GraphPad Prism as fold change of FRET signal for each compound over DMSO-only control.
- FIG. 8 Pharmacokinetic data for SR1903 in mice. Compound was formulated in 10/10/80 DMSO/Tween80/Water and administered to mice at either 20mg/kg by oral gavage or at 25mg/kg via intraperitoneal injection. Blood was drawn at the indicated times and plasma was generated. Following solid phase extraction, drug levels were quantitated using LC-MSMS.
- FIG. 9 Analysis of CIA mice administered either vehicle, GW3965, T0901317, or SRI 903 (20mg/kg) for 14 days (normal chow diet CIA mice).
- FIG. 9A shows liver weight and total thymocytes number.
- FIG. 9B shows total food intake from vehicle and SRI 903 treated DIO mice for 14 days.
- FIG. 9C shows total food intake from vehicle and SRI 903 treated normal chow mice (8-month old female).
- FIG. 9D shows the results of conditioned taste aversion (CTA) assay with 20mg/kg SR1903 and LiCl (0.15M).
- CTA conditioned taste aversion
- FIG. 9E shows thymus and liver weights and picture of thymus and lymph node from vehicle treated DIO mice and SRI 903 treated DIO mice.
- FIG. 9F shows the percentage of abT cell subpopulations and gdT cells in thymocytes.
- FIG. 10 Canonical Pathway Analysis of RNA-sequencing data.
- the words“a” and“an” are meant to include one or more unless otherwise specified.
- the term“a cell” encompasses both a single cell and a combination of two or more cells.
- Treating covers the treatment of the disease or condition of interest in a mammal, preferably a human, having the disease or condition of interest, and includes, for example: preventing or delaying the onset of the disease or condition from occurring in a mammal, in particular, when such mammal is predisposed to the condition but has not yet been diagnosed as having it; inhibiting the disease or condition, i.e., arresting its development; relieving the disease or condition, i.e., causing regression of the disease or condition; and/ or stabilizing the disease or condition. Treatment includes ameliorating or lessening the severity of symptoms of the disease or condition, and/or inhibition of further progression or worsening of those symptoms.
- treat can also refer to the amelioration or eradication of a disease or symptoms associated with a disease. In certain embodiments, such terms refer to minimizing the spread or worsening of the disease resulting from the administration of one or more prophylactic or therapeutic agents to a patient with such a disease.
- prevention refers to the prevention of the onset, recurrence, or spread of the disease in a patient resulting from the administration of a prophylactic or therapeutic agent.
- an“effective amount” or a“therapeutically effective amount” of a compound described herein refers to an amount of the compound that is sufficient to achieve a specific effect or result, and/or treats the disease or condition and/or the symptoms therefore, for example, alleviating, in whole or in part, symptoms associated with the disorder or condition, or halts or slows further progression or worsening of those symptoms, or prevents or provides prophylaxis for the disorder or condition.
- an effective amount is an amount sufficient to inhibit TREM-1 and/or inhibit TREM-1 gene expression.
- An effective amount can also be an amount that is sufficient to inhibit RORy and/or PPARy, and/or agonize an LXR.
- an effective amount can also refer to an amount of a compound as described herein or other active ingredient sufficient to provide a therapeutic or prophylactic benefit in the treatment or prevention of a disease or to delay or minimize symptoms associated with a disease.
- a therapeutically effective amount or an effective amount with respect to a compound as described herein means that amount of therapeutic agent alone, or in combination with other therapies, that provides a therapeutic benefit in the treatment or prevention of a disease. Used in connection with a compound as described herein, the term can encompass an amount that improves overall therapy, reduces or avoids symptoms or causes of disease, or enhances the therapeutic efficacy of or is synergistic with another therapeutic agent.
- a therapeutically effective amount or an effective amount also is the minimum amount necessary to modulate or to inhibit TREM-1.
- A“subject” includes an animal, such as a human, cow, horse, sheep, lamb, pig, chicken, turkey, quail, cat, dog, mouse, rat, rabbit or guinea pig.
- the animal is a mammal such as a non-primate and a primate (e.g., monkey and human).
- the subject is a human subject.
- a human subject can also be referred to as a“patient.”
- a patient is a human, such as a human infant, child, adolescent or adult.
- the terms“patient” and“subject” are used interchangeably.
- a“pharmaceutically acceptable salt” is a pharmaceutically acceptable, organic or inorganic acid or base salt of a compound described herein.
- Representative pharmaceutically acceptable salts include, e.g., alkali metal salts, alkali earth salts, ammonium salts, water-soluble and water-insoluble salts, such as the acetate, amsonate (4, 4-diaminostilbene-2, 2-disulfonate), benzenesulfonate, benzonate, bicarbonate, bisulfate, bitartrate, borate, bromide, butyrate, calcium, calcium edetate, camsylate, carbonate, chloride, citrate, clavulariate, dihydrochloride, edetate, edisylate, estolate, esylate, fiunarate, gluceptate, gluconate, glutamate, glycollylarsanilate, hexafluorophosphate, hexylresorcinate, hydrabamine, hydrobromide, hydrochloride, hydroxynaphthoate, iodide, isothionate
- a pharmaceutically acceptable salt can have more than one charged atom in its structure.
- the pharmaceutically acceptable salt can have multiple counterions.
- a pharmaceutically acceptable salt can have one or more charged atoms and/or one or more counterions.
- SR2211 treatment resulted in repression of TH17 cell differentiation, induction of IFNy, reduction of IL-17 and IL-23R expression, and reduced expression of inflammatory cytokines in activated macrophages.
- Lead optimization of SR2211 led to several interesting compounds including SRI 903, a close chemical analog with nearly identical activity on RORy.
- SRI 903 was found to have a broadened NR activity profile with modest agonism of LXR and mild repressive or inverse agonism of PPARy.
- SRI 903 was found to potently block expression of Triggering Receptor Expressed on Myeloid cells 1 (TREM-1).
- TREM-1 is an orphan immunoreceptor expressed on macrophages and neutrophils and is a potent amplifier of pro- inflammatory innate immune responses although its endogenous ligand has yet to be identified 7 .
- TREM-1 expression is upregulated by PPARy
- PPARy PPARy
- Compounds that modulate the activity of LXR and PPARy have been shown to have immunomodulatory activity.
- Agonists of LXR regulate macrophage inflammatory pathways and reduce inflammation in atherosclerotic plaques 10 11 .
- Modulators of PPARy suppress pro- inflammatory cytokine production and drive Ml to M2 polarization of macrophages.
- agonists of PPARy drive adipogenesis antagonists of PPARy have been shown to retain both anti-inflammatory activity and insulin sensitization properties of agonists without promoting fat accumulation 13 .
- the ability of SR1903 to downregulate TREM-1 may be due to its action on these receptors.
- NRs Nuclear receptors
- the activity of NRs can be increased or decreased by administration of exogenous natural or synthetic ligands making them attractive drug targets for treatment of a wide range of diseases 1 .
- pleiotropic effects have limited the clinical utility of several approved NR modulators and ended clinical development of many more. This fact has spurred interest in developing functional selective NR modulators (also referred to as dissociated
- RORy inverse agonists are currently under clinical development for treatment of various autoimmune diseases 38 .
- LXR agonists have been in clinical development for treatment of dyslipidemia and inflammatory diseases 39 .
- PPARy agonists and partial agonists have been approved and have been in clinical development for metabolic disease, inverse agonists of this receptor conceptually hold promise for a wide range of diseases including osteoporosis and cancer 14 .
- results presented herein demonstrate the anti-inflammatory and anti-diabetic properties of SRI 903 in the collagen induced arthritis (CIA) and diet-induced obesity (DIO) mouse models, respectively.
- SRI 903 afforded similar efficacy to that observed for SR2211 in the CIA model in terms of improvement in clinical scores l .
- intrathymic cell number was enriched in SRI 903 treated mice and secondary lymphoid organs such as lymph node and spleen had similar cell number to that of the vehicle-only control mice.
- Treatment of DIO mice with SRI 903 resulted in reduction in fat mass resulting in reduced body weight and improvements in both insulin and leptin sensitivity. While food intake was reduced in the context of DIO, the compound had no impact on food consumption and body weight when administered to lean mice, and SRI 903 had a null effect in a conditioned taste aversion behavioral paradigm.
- polypharmacological modulator SRI 903 unlike selective RORy inverse agonists, preserves the thymus while retaining potent anti-inflammatory effects in animal models of autoimmune disease.
- the present disclosure thus, in an embodiment, shows the polypharmacological modulator SRI 903 preserves the thymus, unlike the selective RORy inverse agonist SR2211 as shown in Chang et al. (2014) 4 .
- the compound SR1903 in various embodiments, retains potent anti-inflammatory effects in animal models of autoimmune disease.
- the present invention is directed to methods of inhibiting TREM-1 in a subject in need thereof comprising administering an effective amount of a compound having Formula (I), such as SR1903, or a pharmaceutically acceptable salt thereof.
- the invention is also directed to a method of treating an inflammatory disease or condition, an autoimmune disease, obesity, and/or a metabolic disease or disorder in a subject in need thereof comprising administering to said subject an effective amount of a compound having Formula (I), such as SR1903, or a pharmaceutical salt thereof.
- the invention is also directed to the treatment of castration resistant prostate cancer.
- the present invention is additionally directed to methods of inhibiting TREM-1 in a subject in need thereof comprising administering an effective amount of a compound that is a RORy inverse agonist, and that is also an inverse agonist of PPARy and/or an agonist of LXR; preferably, the compound is a RORy inverse agonist, an inverse agonist of PPARy and an agonist of LXR.
- the invention is also directed to a method of treating an inflammatory disease, condition, or disorder, an autoimmune disease, obesity, and/or a metabolic disease in a subject in need thereof comprising administering to said subject an effective amount of a compound that is a RORy inverse agonist, and that is also an inverse agonist of PPARy and/or an agonist of LXR; preferably, the compound is a RORy inverse agonist, an inverse agonist of PPARy and an agonist of LXR.
- SRI 903 is described in U.S. Pat. No. 9,586,928 (the contents of which are expressly incorporated by reference herein) as a RORy inverse agonist.
- the chemical name of SRI 903 is 1,1, 1,3,3, 3-hexafluoro-2-(2'-methyl-4'-((4-(pyridin-4-ylmethyl)piperazin-l-yl)metyl)-[l, G- biphenyl]-4-yl)propan-2-ol and the chemical structure is shown above and in FIG. 1A.
- SRI 903 possesses anti-inflammatory and anti diabetic properties in the collagen-induced arthritis (CIA) and diet-induced obesity (DIO) mouse models, respectively. Obesity and rheumatic disease are mechanistically linked via chronic inflammation.
- the orphan receptor, TREM-1 is a potent amplifier of pro- inflammatory and non-infectious immune responses.
- SRI 903 effectively blocks TREM-1 activation.
- SRI 903 is different from close structural analogs (such as certain other compounds described in U.S. Pat. No. 9,586,928) in that it has modest agonist activity on LXR and weak repressive activity (or more specifically, inverse agonism) of PPARy.
- RORy, LXR, and PPARy play essential roles in inflammation and metabolism.
- SRI 903 aided in the maintenance of thymic homeostasis unlike selective RORy inverse agonists.
- SRI 903 was well- tolerated following chronic administration. SRI 903 can thus be used for the treatment of metabolic and inflammatory disease, and/or for treating disease or conditions mediated or related to TREM-1, and/or for inhibiting TREM-1.
- the ability of SR1903 to block lipopolysaccharide (LPS) signaling indicates that the compound can be used to treat innate immune response disorders.
- LPS lipopolysaccharide
- TREM-1 pathway The magnitude of the inflammatory response is amplified by the TREM-1 pathway, which is upregulated on neutrophils and monocytes that infiltrate infected tissues.
- the ability of the polypharmacological modulator SR1903 to block LPS- mediated signaling via blockade of TREM-1 induction suggests a small molecule therapeutic approach to target TREM-1 for the treatment of innate immune response disorders.
- the invention includes a method of inhibiting TREM-1 in a subject in need thereof comprising administering to said subject an effective amount of a compound that has RORy inverse agonist activity, LXR agonist activity, and PPARy inverse agonist activity.
- the compound is SRI 903 or a compound with similar activity.
- the diseases and conditions that are encompassed include those diseases or conditions in which inhibition of TREM-1 is therapeutically useful, and/or where the activity of TREM-1 is detrimental.
- TREM-1 has, for example, been described as playing a role in inflammatory disorders of both infectious and non-infectious etiology (Roe et al, 2014. Triggering receptor expressed on myeloid cells-1 (TREM-1): a new player in antiviral immunity? Front Microbiol. 5: 627; the contents of which are expressly incorporated by reference herein).
- TREM-1 Triggering receptor expressed on myeloid cells-1 (TREM-1): a new player in antiviral immunity? Front Microbiol. 5: 627; the contents of which are expressly incorporated by reference herein).
- TREM-1 has, for example, been described as playing a role in inflammatory disorders of both infectious and non-infectious etiology (Roe et al, 2014. Triggering receptor expressed on myeloid cells-1 (TREM-1):
- the invention encompasses a method of inhibiting TREM-1 in a subject in need thereof comprising administering to said subject an effective amount of a compound having the formula (I):
- Ri is C1-C4 alkyl substituted with OR or C1-C4 fluoroalkyl substituted with OR;
- R2, R4, and Rs are each independently selected from the group consisting of hydrogen, halo, C1-C4 alkyl, and C1-C4 alkoxy;
- R3 is C1-C4 alkyl
- R is hydrogen or C1-C4 alkyl; or a pharmaceutically acceptable salt thereof.
- the compound has the formula (la):
- Ri is Cl- C4 fluoroalkyl substituted with OH and/or R3 is methyl.
- the compound is SR- 1903, or a pharmaceutically acceptable salt thereof.
- the compound has the Formula (I) and has RORy inverse agonist activity, LXR agonist activity, and PPARy inverse agonist activity.
- the present disclosure also provides in an embodiment a method for treating a subject suffering from a disease or condition that is related to triggering receptor expressed on myeloid cells-1 (TREM-1), comprising administering to the patient a therapeutically effective amount of the compound SRI 903:
- administration of a compound of Formula (I) or SR1903 does not suppress the subject’s immune response and/or preserves the subject’s thymus and/or does not decrease intrathymic cell number.
- Convenient steps for verifying this entail measurements of the subject’s T-cell count before and after administration of the compound of Formula (I) or SR1903.
- T-cell counts are readily established, for instance, by performing a routine blood test on the subject, such as a complete blood count (CBC) well-known to the skilled artisan.
- T-cell counts pre- and post administration are substantially the same, such as within 10% or less of each other. In some embodiments, the T-cell counts are within 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1% or less of each other.
- administration of the compound of Formula (I) or SRI 903 surprisingly protects the subject from thymic involution.
- the compounds described herein can be used in methods of protecting a subject from thymic involution.
- the mass of the subject’s thymus is measured before and after administration of the compound of Formula (I) or SR1903.
- direct measurement of thymic mass in vivo may be impractical.
- Additional indices of thymic involution can be used, such as in a clinical setting. For example, quantitative measurement of overall thymic size can be assessed. Alternatively, or in addition, visual assessment with thymic scores provide a qualitative scoring of thymic involution.
- any of these of indices are established, for example, by routing computed tomography (CT) scans of the subject’s thymus.
- CT computed tomography
- the pre- and post-administration masses, overall sizes, and/or qualitative scores of the thymus are substantially the same, such as within 10% or less of each other.
- the pre- and post-administration indices are within 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1% or less of each other.
- the conditions that can be treated according to the methods described herein include, for example, TREM-1 mediated inflammation and TREM-1 mediated metabolic disorders.
- the TREM-1 mediated inflammation can include, for example, an acute, sub-acute, or chronic inflammatory disorder, systemic inflammation, an innate immune response disorder, or an autoimmune disorder.
- the subject or patient for example, can be suffering from chronic inflammation or a chronic inflammatory disease or disorder, including those of aging, inflammaging, and immunosenescence.
- chronic inflammatory diseases include, but are not limited to, rheumatic diseases, obesity, and/or a metabolic disease or inflammation secondary to metabolic syndrome and/or type II diabetes.
- Non-limiting examples of inflammatory diseases or disorders and/or autoimmune diseases or disorders are inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), irritable bowel syndrome, rheumatoid arthritis (RA), juvenile rheumatoid arthritis, ankylosing spondylitis, juvenile idiopathic arthritis (JIA), gout, Behcet’s disease, psoriasis, psoriatic arthritis, lupus associated arthritis, systemic lupus erythematosus (SLE), lupus nephritis, type I diabetes, Grave's disease, multiple sclerosis (MS), autoimmune myocarditis, vasculitis, Kawasaki disease, coronary artery disease, chronic obstructive pulmonary disease, interstitial lung disease, autoimmune thyroiditis, scleroderma, systemic sclerosis, osteoarthritis, atopic dermatitis, lichen planus, viti
- microangiopathies thrombocytopenia, disseminated intravascular coagulation (DIC), toxic shock syndrome, and autoimmune diseases that are a result of either acute, sub-acute, or chronic inflammation.
- the invention encompasses treatment of inflammatory disease or disorders related to infective and non-infective etiologies.
- the subject is suffering from rheumatoid arthritis, diabetes, obesity, inflammatory bowel disease, endotoxemia, septicemia, sepsis, septic shock, multi organ system failure, systemic inflammatory response syndrome (SIRS), vasculitis, vascular leak, renal failure, respiratory failure (e.g., acute respiratory distress syndrome and/or severe acute respiratory syndrome), hematologic dyscrasias, hemolytic anemias, coagulopathies including excessive clotting and bleeding, thrombotic microangiopathies, thrombocytopenia, and disseminated intravascular coagulation.
- the method is directed to the treatment of septic shock.
- the invention encompasses treatment of systemic inflammation in a patient in need thereof.
- Systemic inflammation encompasses conditions characterized by a release of pro- inflammatory cytokines and an activated innate immune system which can be caused by biological factors, chemical factors, or by genetic factors.
- SIRS is a serious condition related to systemic inflammation, organ dysfunction, and organ failure. SIRS is nonspecific and can be caused by ischemia, inflammation, trauma, infection, or several insults combined. Thus, SIRS can be, but is not always, related to infection.
- the SIRS is cytokine release syndrome (CRS)/cytokine storm syndrome (CSS).
- the invention encompasses the treatment of multi-organ system failure, SIRS, respiratory failure, sepsis, septic shock, and systemic inflammation caused by any inciting factor or condition, including, but not limited, autoimmune response or disease, immune complex, allergen, tumor lysis syndrome, drug or toxin-induced, or physical/thermal stressors (e.g., exercise, cold, heat, trauma, or rhabdomyolysis), as well as those caused by a foreign pathogen or infection.
- the invention is directed to the treatment of ARDS and/or SARS induced by a respiratory infection, including, but not limited to, SARS CoV and SARS CoV-2/COVID-19 infections.
- the SIRS is cytokine release syndrome (CRS)/cytokine storm syndrome (CSS) associated with viral infections, including, but not limited to, SARS CoV and SARS CoV-2/COVID-19 infections.
- the invention additionally encompasses the treatment of multi-system organ failure or organ damage, including, but not limited to, complement-driven anemia, hemodynamic collapse, for example, associated with microangiopathies, ARDS, hemolysis, capillary leak, disseminated intravascular coagulation (DIC), and paroxysmal nocturnal hemoglobinuria (PNH), for example.
- multi-system organ failure or organ damage including, but not limited to, complement-driven anemia, hemodynamic collapse, for example, associated with microangiopathies, ARDS, hemolysis, capillary leak, disseminated intravascular coagulation (DIC), and paroxysmal nocturnal hemoglobinuria (PNH), for example.
- the invention is directed to the treatment of thrombotic microangiopathies, including, for example, those associated with thrombotic thrombocytopenic purpura (TTP), hemolytic uremic syndrome (HUS), atypical hemolytic uremic syndrome (aHUS), posttransplant TMAs or transplant-associated TMAs, and hemolysis, elevated liver function tests, HELLP syndrome (hemolysis, elevated liver enzymes, and low platelets), DIC, drugs, malignancy, scleroderma-associated renal crisis, systemic lupus erythematosus (SLE), and malignant hypertension. Additional complement- driven anemias are described, for example, in Merrill et al. (2016). Complement-driven anemia: more than just paroxysmal nocturnal hemoglobinuria. Hematology Am Soc Hematol Educ Program. 30(1):371.
- the inflammatory bowel disease can, for example, be IBD refractory to anti- TNF treatment, such as refractory Crohn’s disease.
- the subject or patient is suffering from a disease or condition selected from autoimmune disorders, inflammatory diseases, metabolic disorders, sepsis, viral immunity, and castration resistant prostate cancer (CRPC).
- a disease or condition selected from autoimmune disorders, inflammatory diseases, metabolic disorders, sepsis, viral immunity, and castration resistant prostate cancer (CRPC).
- the subject or patient is suffering from an autoimmune disorder.
- autoimmune disorders include, in various embodiments, Hashimoto's thyroiditis, Pernicious anemia, Addison's disease, Type I diabetes, Rheumatoid arthritis, Systemic lupus erythematosus. Dermatomyositis, Sjogren syndrome, Lupus erythematosus, Multiple sclerosis, Myasthenia gravis, Reactive arthritis, Grave's disease, Crohn's disease, and Lupus.
- the subject or patient is suffering from an inflammatory disease or disorder.
- the subject or patient is suffering from a metabolic disorder.
- the disease or disorder is diabetes or obesity.
- Metabolic disorders also include metabolic syndrome and dyslipidemia.
- the subject or patient is suffering from castration resistant prostate cancer (CRPC).
- CRPC castration resistant prostate cancer
- the invention is directed to the treatment of pathogen-associated inflammation or pathogen-associated infection and associated conditions resulting from reactive inflammation.
- the pathogen-associated infection can, for example, be a bacterial, parasitic, fungal, or viral infection.
- the invention is directed to the treatment of virus or viral infection-associated inflammation. Inflammatory responses to certain viral infection can be protective/regulated inflammation or pathogenic/dysregulated inflammation (Channappanavar et al. (2017). Pathogenic human coronavirus infections: causes and consequences of cytokine storm and immunopathology. Semin Immunopathol 39(5): 529-539).
- the compounds of the invention can be used to treat virus-associated pathogenic/dysregulated inflammation.
- TREM-1 Triggering receptor expressed on myeloid cells-1 (TREM-1): a new player in antiviral immunity? Front Microbiol. 5: 627 and Amrun et al, 2020.
- TREM-1 activation is a potential key regulator driving severe pathogenesis of enterovirus A71 infection. Sci Rep 10: 3810; the contents of each of which are expressly incorporated by reference herein.
- Amrun et al. for example, showed that reduced TREM-1 expression mitigates enterovirus A71 (EV-A71)infection.
- the invention is directed to treatment of inflammation associated with viral infection, including acute viral infection.
- viruses include orthomyxoviruses (influenza virus), filoviruses (Ebola and Marburg viruses), flaviviruses (DENV, WNV, and TBEV), alphaviruses (CHIKV), and coronaviruses (highly pathogenic coronaviruses include, for example, severe acute respiratory syndrome CoV (SARS-CoV), Middle East respiratory syndrome CoV (MERS-CoV) and SARS-CoV -2/COVID-19).
- SARS-CoV severe acute respiratory syndrome CoV
- MERS-CoV Middle East respiratory syndrome CoV
- SARS-CoV SARS-CoV -2/COVID-19
- inflammation associated with hCoVs includes elevated pro-inflammatory cytokine/chemokine responses resulting in acute lung injury (ALI), and acute respiratory distress syndrome (ARDS) (Channappanavar et al. (2017).
- ALI acute lung injury
- ARDS acute respiratory distress syndrome
- Pathogenic human coronavirus infections causes and consequences of cytokine storm and immunopathology).
- the compounds described herein can be used to treat cytokine storm, acute lung injury, and/or ARDS, including those associated viral infection, including, but not limited to, highly pathogenic coronaviruses.
- the literature identifies a risk of thymic alterations and a risk of T-cell lymphoma development as a result of sustained
- the compounds described herein including SRI 903 have been identified as preserving thymic function, for example, as measured by intrathymic cell number compared to the effect of selective RORy inverse agonists such as SR2211.
- the compounds described herein are useful in reducing, delaying, or mitigating age- or obesity-related thymic involution.
- obesity obesity has been described as accelerating thymic aging and/or accelerating thymic involution.
- involution of the thymus and a decrease in the number of naive CD4+ and CD8+ T cells are biomarkers of
- the compounds and methods described herein can be used for the treatment of chronic low-grade inflammation associated with the aging process, or inflammaging. In certain aspects, the compounds and methods described herein are used to enhance an immune response in a subject exhibiting inflammaging or immunosenescence.
- Indicators of immunosenescence are a decrease in the numbers of naive CD4 + and CD8 + T cells, an imbalance in the T cell subsets, a decrease in T cell receptor (TCR) repertoire and signaling, and a decrease in B cell lymphopoiesis and a reduction in antibody production (Salminen et al).
- the compounds can also be used to treat or reduce thymic involution, including for example, obesity- or age-related thymic involution.
- the compounds described herein preserve thymic function, for example, thymic function is preserved as compared to selective RORy inverse agonists.
- a selective RORy inverse agonist can be a compound that is inactive with respect to modulation of a nuclear receptor other than RORy (such as LXR and/or PPARy); or the modulation of the ROR takes place at a concentration ineffective for modulation of a nuclear receptor other than a RORy (such as LXR and/or PPARy).
- a selective RORy inverse agonist can be inactive with respect to modulation of another nuclear receptor, such as LXRC or LXRB, or the modulation of a ROR can be selective at some concentration with respect to modulation of another nuclear receptor, such as an LXR or PPARy, providing an effect free of side effects resulting from modulation of a non-target nuclear receptor.
- An example of a selective RORy inverse agonist is SR2211.
- the selective RORy inverse agonist is one that does not inhibit TREM-1.
- preservation of thymic function and/or lack of suppression of an immune response can be determined by measuring a subject’s T-cell count before and after administration of the compound as described herein.
- the effect on thymic function is measured, for example by measuring T-cell count, is compared with that of a selective RORy inverse agonist.
- the invention is directed to a method of treating obesity and/or a metabolic disease or disorder comprising administering an effective amount of a compound of Formula (I), such as SRI 903, wherein thymic function is preserved, for example, as measured by intrathymic cell number.
- a compound of Formula (I) such as SRI 903
- intrathymic cell number was enriched in SRI 903 -treated mice and secondary lymphoid organs such as lymph node and spleen had similar cell number to that of the vehicle-only control mice.
- intrathymic cell number is compared to that before administration of the compound of Formula (I) (such as SR1903) and/or the effect of selective RORy inverse agonists such as SR2211.
- the invention is directed to a method of reducing obesity- related thymic involution comprising administering to a subject in need thereof an effective amount of a compound of Formula (I), such as SRI 903.
- a compound of Formula (I) such as SRI 903.
- modulators of RORy including inverse agonists, are described in U.S. Pat. No. 9,586,928.
- Compounds that can be used to inhibit TREM-1 as described herein include compounds that have RORy inverse agonist activity, LXR agonist activity, and PPARy inverse agonist activity and can, for example, be selected from the compounds described in U.S. Pat. No. 9,586,928.
- An example of such a compound is SR1903. It is within ordinary skill to evaluate a compound, such as those described herein or in U.S. Pat. No.
- 9,586,926, for effectiveness in modulation of RORy including for example, inverse agonism of RORy in various cellular and biochemical assays using the procedures, for example, in U.S. Pat. No. 9,586,926 or described in the scientific literature. It is also within ordinary skill to evaluate a compound, such as those described herein or in U.S. Pat. No. 9,586,926, for effectiveness in modulation of the nuclear receptors LXRa and LXR in various cellular and biochemical assays using the procedures described in U.S. Pat. No. 9,586,926 or described in the scientific literature. It is additionally within the purview of the skilled person to evaluate a compound, such as those described herein or in U.S. Pat. No.
- An“analog” of a chemical structure refers to a chemical structure that preserves substantial similarity with the parent structure, although it may not be readily derived synthetically from the parent structure.
- a related chemical structure that is readily derived synthetically from a parent chemical structure is referred to as a“derivative.”
- the terms“stable compound” and“stable structure” are meant to indicate a compound that is sufficiently robust to survive isolation to a useful degree of purity from a reaction mixture, and formulation into an efficacious therapeutic agent. Only stable compounds are contemplated herein.
- A“small molecule” refers to an organic compound, including an organometallic compound, of a molecular weight less than about 2 kDa, that is not a polynucleotide, a polypeptide, a polysaccharide, or a synthetic polymer composed of a plurality of repeating units.
- any of the groups described herein, which contain one or more substituents it is understood that such groups do not contain any substitution or substitution patterns which are sterically impractical and/or synthetically non-feasible.
- the compounds of this disclosed subject matter include all stereochemical isomers arising from the substitution of these compounds.
- an“alkyl” group When a group, e.g., an“alkyl” group, is referred to without any limitation on the number of atoms in the group, it is understood that the claim is definite and limited with respect the size of the alkyl group, both by definition; i.e., the size (the number of carbon atoms) possessed by a group such as an alkyl group is a finite number, less than the total number of carbon atoms in the universe and bounded by the understanding of the person of ordinary skill as to the size of the group as being reasonable for a molecular entity; and by functionality, i.e., the size of the group such as the alkyl group is bounded by the functional properties the group bestows on a molecule containing the group such as solubility in aqueous or organic liquid media. Therefore, a claim reciting an“alkyl” or other chemical group or moiety is definite and bounded, as the number of atoms in the group cannot be infinite.
- an isotopic form of one or more atoms in a molecule that is different from the naturally occurring isotopic distribution of the atom in nature is referred to as an “isotopically labeled form” of the molecule.
- All isotopic forms of atoms are included as options in the composition of any molecule, unless a specific isotopic form of an atom is indicated.
- any hydrogen atom or set thereof in a molecule can be any of the isotopic forms of hydrogen, i.e., protium (1H), deuterium (2H), or tritium (3H) in any combination.
- any carbon atom or set thereof in a molecule can be any of the isotopic form of carbons, such as 11C, 12C, or 14C, or any nitrogen atom or set thereof in a molecule can be any of the isotopic forms of nitrogen, such as 13N, 14N, or 15N.
- a molecule can include any combination of isotopic forms in the component atoms making up the molecule, the isotopic form of every atom forming the molecule being independently selected. In a multi-molecular sample of a compound, not every individual molecule necessarily has the same isotopic composition.
- a sample of a compound can include molecules containing various different isotopic compositions, such as in a tritium or 14C radiolabeled sample where only some fraction of the set of molecules making up the macroscopic sample contains a radioactive atom. It is also understood that many elements that are not artificially isotopically enriched themselves are mixtures of naturally occurring isotopic forms, such as 14N and 15N, 32S and 34S, and so forth. A molecule as recited herein is defined as including isotopic forms of all its constituent elements at each position in the molecule. As is well known in the art, isotopically labeled compounds can be prepared by the usual methods of chemical synthesis, except substituting an isotopically labeled precursor molecule.
- the isotopes can be obtained by any method known in the art, such as generation by neutron absorption of a precursor nuclide in a nuclear reactor, by cyclotron reactions, or by isotopic separation such as by mass spectrometry.
- the isotopic forms are incorporated into precursors as required for use in any particular synthetic route.
- 14C and 3H can be prepared using neutrons generated in a nuclear reactor. Following nuclear transformation, 14C and 3H are incorporated into precursor molecules, followed by further elaboration as needed.
- Alkyl groups include straight chain and branched alkyl groups and cycloalkyl groups having from 1 to about 20 carbon atoms, and typically from 1 to 12 carbons or, in some embodiments, from 1 to 8 carbon atoms.
- straight chain alkyl groups include those with from 1 to 8 carbon atoms such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n- hexyl, n-heptyl, and n-octyl groups.
- branched alkyl groups include, but are not limited to, isopropyl, iso-butyl, sec-butyl, t-butyl, neopentyl, isopentyl, and 2,2- dimethylpropyl groups.
- Representative substituted alkyl groups can be substituted one or more times with any of the groups listed above, for example, amino, hydroxy, cyano, carboxy, nitro, thio, alkoxy, and halogen groups.
- alkoxy refers to an oxygen atom connected to an alkyl group, including a cycloalkyl group, as are defined above.
- linear alkoxy groups include but are not limited to methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, and the like.
- branched alkoxy include but are not limited to isopropoxy, sec-butoxy, tert-butoxy, isopentyloxy, isohexyloxy, and the like.
- cyclic alkoxy include but are not limited to cyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy, and the like.
- An alkoxy group can include one to about 12-20 carbon atoms bonded to the oxygen atom, and can further include double or triple bonds, and can also include heteroatoms.
- an allyloxy group is an alkoxy group within the meaning herein.
- a methoxy ethoxy group is also an alkoxy group within the meaning herein, as is a methylenedioxy group in a context where two adjacent atoms of a structures are substituted therewith.
- the terms“halo” or“halogen” or“halide” by themselves or as part of another substituent mean, unless otherwise stated, a fluorine, chlorine, bromine, or iodine atom, preferably, fluorine, chlorine, or bromine.
- A“haloalkyl” group includes mono-halo alkyl groups, poly-halo alkyl groups wherein all halo atoms can be the same or different, and per-halo alkyl groups, wherein all hydrogen atoms are replaced by halogen atoms, such as fluoro.
- haloalkyl include trifluoromethyl, 1,1-dichloroethyl, 1,2-dichloroethyl, l,3-dibromo-3,3-difluoropropyl, perfluorobutyl, and the like.
- the group— C(OH)(CF3)2 is a hydroxy-substituted haloalkyl (i.e., fluoroalkyl) group within the meaning herein.
- a fluoroalkyl group can be fully or partially fluorinated.
- A“haloalkoxy” group includes mono-halo alkoxy groups, poly -halo alkoxy groups wherein all halo atoms can be the same or different, and per-halo alkoxy groups, wherein all hydrogen atoms are replaced by halogen atoms, such as fluoro.
- haloalkoxy include trifluoromethoxy, 1,1-dichloroethoxy, 1,2-dichloroethoxy, l,3-dibromo-3,3- difluoropropoxy, perfluorobutoxy, and the like.
- a fluoroalkoxy group can be fully or partially fluorinated.
- A“hydroxyhaloalkyl” as the term is used herein refers to an alkyl group bearing at least one hydroxy group and at least one halo group.
- a 1-hydroxy-l- trifluoromethyl-2,2,2-trifluoroethyl group is a hydroxyhaloalkyl group within the meaning herein.
- (Cx-Cy)perfluoroalkyl wherein x ⁇ y, means an alkyl group with a minimum of x carbon atoms and a maximum of y carbon atoms, wherein all hydrogen atoms are replaced by fluorine atoms.
- Preferred is— (Ci-C6)perfluoroalkyl, more preferred is— (Ci- C3)perfluoroalkyl, most preferred is— CF3.
- a perfluoroalkyl group encompasses a fully fluorinated fluoroalkyl group.
- (Cx-Cy)perfluoroalkylene wherein x ⁇ y, means an alkyl group with a minimum of x carbon atoms and a maximum of y carbon atoms, wherein all hydrogen atoms are replaced by fluorine atoms.
- x ⁇ y means an alkyl group with a minimum of x carbon atoms and a maximum of y carbon atoms, wherein all hydrogen atoms are replaced by fluorine atoms.
- Preferred is— (Ci-C6)perfluoroalkylene, more preferred is— (Ci-C3)perfluoroalkylene, most preferred is— CF2— .
- A“salt” as is well known in the art includes an organic compound such as a carboxylic acid, a sulfonic acid, or an amine, in ionic form, in combination with a counterion.
- acids in their anionic form can form salts with cations such as metal cations, for example sodium, potassium, and the like; with ammonium salts such as NEE + or the cations of various amines, including tetraalkyl ammonium salts such as tetramethylammonium, or other cations such as trimethylsulfonium, and the like.
- A“pharmaceutically acceptable” or “pharmacologically acceptable” salt is a salt formed from an ion that has been approved for human consumption and is generally non-toxic, such as a chloride salt or a sodium salt.
- a “zwitterion” is an internal salt such as can be formed in a molecule that has at least two ionizable groups, one forming an anion and the other a cation, which serve to balance each other. For example, amino acids such as glycine can exist in a zwitterionic form.
- a “zwitterion” is a salt within the meaning herein.
- the compounds of the present invention may take the form of salts.
- the term“salts” embraces addition salts of free acids or free bases which are compounds of the invention.
- Salts can be“pharmaceutically-acceptable salts.”
- pharmaceutically-acceptable salt refers to salts which possess toxicity profiles within a range that affords utility in pharmaceutical applications. Pharmaceutically unacceptable salts may nonetheless possess properties such as high crystallinity, which have utility in the practice of the present invention, such as for example utility in process of synthesis, purification or formulation of compounds of the invention.
- Suitable pharmaceutically-acceptable acid addition salts may be prepared from an inorganic acid or from an organic acid.
- inorganic acids include hydrochloric, hydrobromic, hydriodic, nitric, carbonic, sulfuric, and phosphoric acids.
- Appropriate organic acids may be selected from aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic, carboxylic and sulfonic classes of organic acids, examples of which include formic, acetic, propionic, succinic, glycolic, gluconic, lactic, malic, tartaric, citric, ascorbic, glucuronic, maleic, fumaric, pyruvic, aspartic, glutamic, benzoic, anthranilic, 4-hydroxybenzoic, phenylacetic, mandelic, embonic (pamoic), methanesulfonic, ethanesulfonic,
- benzenesulfonic pantothenic, trifluoromethanesulfonic, 2-hydroxyethanesulfonic, p- toluenesulfonic, sulfanilic, cyclohexylaminosulfonic, stearic, alginic, b-hydroxybutyric, salicylic, galactaric and galacturonic acid.
- pharmaceutically unacceptable acid addition salts include, for example, perchlorates and tetrafluoroborates.
- Suitable pharmaceutically acceptable base addition salts of compounds of the invention include, for example, metallic salts including alkali metal, alkaline earth metal and transition metal salts such as, for example, calcium, magnesium, potassium, sodium and zinc salts.
- Pharmaceutically acceptable base addition salts also include organic salts made from basic amines such as, for example, N,N'-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, ethylenediamine, meglumine (N-methylglucamine) and procaine.
- Examples of pharmaceutically unacceptable base addition salts include lithium salts and cyanate salts.
- salts may be useful, for example as intermediates in the synthesis of Formula (I) compounds, for example in their purification by recrystallization. All of these salts may be prepared by conventional means from the corresponding compound according to Formula (I) by reacting, for example, the appropriate acid or base with the compound according to Formula (I).
- pharmaceutically acceptable salts refers to nontoxic inorganic or organic acid and/or base addition salts, see, for example, Lit et al, Salt Selection for Basic Drugs (1986), IntJ. Pharm., 33, 201-217, incorporated by reference herein. Lists of many suitable salts are also found in Remington's Pharmaceutical Sciences, 17th ed., Mack Publishing Company, Easton, Pa., (1985), 1418, and the disclosure of which is incorporated herein by reference.
- the invention includes pharmaceutically acceptable salts of the compound of Formula (I).
- hydrates, solvates, prodrugs, and metabolites are encompassed.
- A“hydrate” is a compound that exists in a composition with water molecules.
- the composition can include water in stoichiometric quantities, such as a monohydrate or a dihydrate, or can include water in random amounts.
- a“hydrate” refers to a solid form, i.e., a compound in water solution, while it may be hydrated, is not a hydrate as the term is used herein.
- A“solvate” is a similar composition except that a solvent other that water replaces the water.
- a solvent other that water replaces the water.
- methanol or ethanol can form an“alcoholate”, which can again be stoichiometric or non-stoichiometric.
- a“solvate” refers to a solid form, i.e., a compound in solution in a solvent, while it may be solvated, is not a solvate as the term is used herein.
- A“prodrug” as is well known in the art is a substance that can be administered to a patient where the substance is converted in vivo by the action of biochemical agents within the patient's body, such as enzymes, to the active pharmaceutical ingredient.
- prodrugs include esters of carboxylic acid groups, which can be hydrolyzed by endogenous esterases as are found in the bloodstream of humans and other mammals. Conventional procedures for the selection and preparation of suitable prodrug derivatives are described, for example, in“Design of Prodrugs”, ed. H. Bundgaard, Elsevier, 1985.
- the term“prodrug” refers to any pharmaceutically acceptable form of compound of the invention which, upon administration to a patient, provides a compound of the invention.
- prodrugs refer to a compound that is metabolized, for example hydrolyzed or oxidized, in the host to form a compound of the invention.
- Typical examples of prodrugs include compounds that have biologically labile protecting groups on a functional moiety of the active compound.
- Prodrugs include compounds that can be oxidized, reduced, animated, deaminated, hydroxylated, dehydroxylated, hydrolyzed, dehydrolyzed, alkylated, dealkylated, acylated, deacylated, phosphorylated, dephosphorylated to produce the active compound.
- the term“metabolite” refers to any compound produced in vivo or in vitro from the parent drug of the invention, or any of its prodrugs that are converted biologically to a parent drug of the invention and then to a further biotransformation product of the parent drug.
- the present invention further embraces the use of isolated compounds of the invention.
- isolated compound refers to a preparation of a compound of the invention, or a mixture of compounds the invention, wherein the isolated compound has been separated from the reagents used, and/or byproducts formed, in the synthesis of the compound or compounds.“Isolated” does not mean that the preparation is technically pure (homogeneous), but it is sufficiently pure to compound in a form in which it can be used therapeutically.
- an“isolated compound” refers to a preparation of a compound of the invention or a mixture of compounds of the invention, which contains the named compound or mixture of compounds of the invention in an amount of at least 10 percent by weight of the total weight.
- the preparation contains the named compound or mixture of compounds in an amount of at least 50 percent by weight of the total weight; more preferably at least 80 percent by weight of the total weight; and most preferably at least 90 percent, at least 95 percent or at least 98 percent by weight of the total weight of the preparation.
- the compounds described herein and intermediates may be isolated from their reaction mixtures and purified by standard techniques such as filtration, liquid-liquid extraction, solid phase extraction, distillation, recrystallization or chromatography, including flash column chromatography, or HPLC.
- a compound of the formula (I) or a salt thereof may exhibit the phenomenon of tautomerism whereby two chemical compounds that are capable of facile interconversion by exchanging a hydrogen atom between two atoms, to either of which it forms a covalent bond. Since the tautomeric compounds exist in mobile equilibrium with each other they may be regarded as different isomeric forms of the same compound. It is to be understood that the formulae drawings within this specification can represent only one of the possible tautomeric forms. However, it is also to be understood that the invention encompasses any tautomeric form and is not to be limited merely to any one tautomeric form utilized within the formulae drawings.
- Such tautomerism can also occur with substituted pyrazoles such as 3-methyl, 5- methyl, or 3,5-dimethylpyrazoles, and the like.
- Another example of tautomerism is amido- imido (lactam-lactim when cyclic) tautomerism, such as is seen in heterocyclic compounds bearing a ring oxygen atom adjacent to a ring nitrogen atom.
- tautomerism is an example of tautomerism. Accordingly, a structure depicted herein as one tautomer is intended to also include the other tautomer.
- the isomers resulting from the presence of a chiral center comprise a pair of non- superimposable isomers that are called“enantiomers.”
- Single enantiomers of a pure compound are optically active, i.e., they are capable of rotating the plane of plane polarized light.
- Single enantiomers are designated according to the Cahn-Ingold-Prelog system.
- the priority of substituents is ranked based on atomic weights, a higher atomic weight, as determined by the systematic procedure, having a higher priority ranking. Once the priority ranking of the four groups is determined, the molecule is oriented so that the lowest ranking group is pointed away from the viewer.
- the molecule is designated as having an (R) absolute configuration
- the molecule is designated as having an (S) absolute configuration.
- the Cahn-Ingold-Prelog ranking is A>B>C>D. The lowest ranking atom, D is oriented away from the viewer.
- the solid wedge indicates that the atom bonded thereby projects toward the viewer out of the plane of the paper, and a dashed wedge indicates that the atom bonded thereby projects away from the viewer out of the plan of the paper, i.e., the plane“of the paper” being defined by atoms A, C, and the chiral carbon atom for the (R) configuration shown below.
- a carbon atom bearing the A-D atoms as shown above is known as a“chiral” carbon atom, and the position of such a carbon atom in a molecule is termed a“chiral center.”
- Compounds of the invention may contain more than one chiral center, and the configuration at each chiral center is described in the same fashion.
- the present invention is meant to encompass diastereomers as well as their racemic and resolved, diastereomerically and enantiomerically pure forms and salts thereof.
- Diastereomeric pairs may be resolved by known separation techniques including normal and reverse phase chromatography, and crystallization.
- isolated optical isomer means a compound which has been substantially purified from the corresponding optical isomer(s) of the same formula.
- the isolated isomer is at least about 80%, more preferably at least 90% pure, even more preferably at least 98% pure, most preferably at least about 99% pure, by weight.
- Isolated optical isomers may be purified from racemic mixtures by well-known chiral separation techniques. According to one such method, a racemic mixture of a compound of the invention, or a chiral intermediate thereof, is separated into 99% wt. % pure optical isomers by HPLC using a suitable chiral column, such as a member of the series of
- compositions of the compounds of the invention are provided, alone or in combination with another medicament.
- compounds of the invention include stereoisomers, tautomers, solvates, prodrugs, metabolites, pharmaceutically acceptable salts and mixtures thereof.
- Compositions containing a compound of the invention can be prepared by conventional techniques, e.g. as described in Remington: The Science and Practice of Pharmacy, 19th Ed., 1995, incorporated by reference herein.
- the compositions can appear in conventional forms, for example capsules, tablets, aerosols, solutions, suspensions or topical applications.
- compositions include a compound of the invention and a pharmaceutically acceptable excipient which can be a carrier or a diluent.
- the active compound will usually be mixed with a carrier, or diluted by a carrier, or enclosed within a carrier which can be in the form of an ampoule, capsule, sachet, paper, or other container.
- the active compound when mixed with a carrier, or when the carrier serves as a diluent, it can be solid, semi-solid, or liquid material that acts as a vehicle, excipient, or medium for the active compound.
- the active compound can be adsorbed on a granular solid carrier, for example contained in a sachet.
- suitable carriers are water, salt solutions, alcohols, polyethylene glycols, polyhydroxyethoxylated castor oil, peanut oil, olive oil, gelatin, lactose, terra alba, sucrose, dextrin, magnesium carbonate, sugar, cyclodextrin, amylose, magnesium stearate, talc, gelatin, agar, pectin, acacia, stearic acid or lower alkyl ethers of cellulose, silicic acid, fatty acids, fatty acid amines, fatty acid monoglycerides and diglycerides, pentaerythritol fatty acid esters, polyoxyethylene, hydroxymethylcellulose and
- the carrier or diluent can include any sustained release material known in the art, such as glyceryl monostearate or glyceryl distearate, alone or mixed with a wax.
- the formulations can be mixed with auxiliary agents which do not deleteriously react with the active compounds.
- auxiliary agents which do not deleteriously react with the active compounds.
- Such additives can include wetting agents, emulsifying and suspending agents, salt for influencing osmotic pressure, buffers and/or coloring substances preserving agents, sweetening agents or flavoring agents.
- the compositions can also be sterilized if desired.
- the invention provides a dosage form adapted for administration to a patient afflicted with a condition described herein, wherein the dosage form comprises a capsule, a tablet, a liquid or dispersed oral formulation, or a formulation adapted for parenteral administration.
- the route of administration can be any route which effectively transports the active compound of the invention to the appropriate or desired site of action, such as oral, nasal, pulmonary, buccal, subdermal, intradermal, transdermal or parenteral, e.g., rectal, depot, subcutaneous, intravenous, intraurethral, intramuscular, intranasal, ophthalmic solution or an ointment, the oral route being preferred.
- the preparation can be tabletted, placed in a hard gelatin capsule in powder or pellet form or it can be in the form of a troche or lozenge. If a liquid carrier is used, the preparation can be in the form of a syrup, emulsion, soft gelatin capsule or sterile injectable liquid such as an aqueous or non-aqueous liquid suspension or solution.
- the initial therapeutically effective amount of SR1903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof that is administered is in the range of about 0.01 to about 200 mg/kg or about 0.1 to about 20 mg/kg of patient body weight per day, with the typical initial range being about 0.3 to about 15 mg/kg/day.
- Oral unit dosage forms such as tablets and capsules, may contain from about 0.1 mg to about 1000 mg of SRI 903 or a compound of Formula (I), or a pharmaceutically acceptable salt thereof. In another embodiment, such dosage forms contain from about 50 mg to about 500 mg of SRI 903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof.
- such dosage forms contain from about 25 mg to about 200 mg SR1903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof. In still another embodiment, such dosage forms contain from about 10 mg to about 100 mg of SRI 903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof. In a further embodiment, such dosage forms contain from about 5 mg to about 50 mg of SRI 903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof. In any of the foregoing embodiments the dosage form can be administered once a day or twice per day, for example.
- compositions of the present disclosure can be administered orally, topically, parenterally, by inhalation or spray or rectally in dosage unit formulations.
- parenteral as used herein includes subcutaneous injections, intravenous, intramuscular, intrastemal injection or infusion techniques.
- Suitable oral compositions as described herein include without limitation tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsion, hard or soft capsules, syrups or elixirs.
- pharmaceutical compositions suitable for single unit dosages that comprise SRI 903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier.
- compositions of the present disclosure that are suitable for oral use may be prepared according to any method known to the art for the manufacture of pharmaceutical compositions.
- liquid formulations of the compounds of the present disclosure contain one or more agents selected from the group consisting of sweetening agents, flavoring agents, coloring agents and preserving agents in order to provide pharmaceutically palatable preparations of SR1903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof.
- excipients include without limitation inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, com starch, or alginic acid; binding agents, for example starch, gelatin or acacia, and lubricating agents, for example magnesium stearate, stearic acid or talc.
- the tablets may be uncoated or they may be coated by known coating techniques to delay disintegration and absorption in the gastrointestinal tract and thereby to provide a sustained therapeutic action over a desired time period.
- a time delay material such as glyceryl monostearate or glyceryl distearate may be employed.
- Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil.
- an inert solid diluent for example, calcium carbonate, calcium phosphate or kaolin
- water or an oil medium for example peanut oil, liquid paraffin or olive oil.
- SR1903 for aqueous suspensions, SR1903, or a compound of Formula (I), or a
- pharmaceutically acceptable salt thereof is admixed with excipients suitable for maintaining a stable suspension.
- excipients suitable for maintaining a stable suspension include without limitation are sodium carboxymethylcellulose, methylcellulose, hydropropylmethylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia.
- Oral suspensions can also contain dispersing or wetting agents, such as naturally- occurring phosphatide, for example, lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example, heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol such as polyoxyethylene sorbitol monooleate, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbitan monooleate.
- dispersing or wetting agents such as naturally- occurring phosphatide, for example, lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example, heptadecaethyleneoxycetanol,
- the aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl p-hydroxybenzoate, one or more coloring agents, one or more flavoring agents, and one or more sweetening agents, such as sucrose or saccharin.
- preservatives for example ethyl, or n-propyl p-hydroxybenzoate
- coloring agents for example ethyl, or n-propyl p-hydroxybenzoate
- flavoring agents for example ethyl, or n-propyl p-hydroxybenzoate
- sweetening agents such as sucrose or saccharin.
- Oily suspensions may be formulated by suspending SRI 903 or a pharmaceutically acceptable salt thereof in a vegetable oil, for example arachis oil, olive oil, sesame oil or coconut oil, or in a mineral oil such as liquid paraffin.
- the oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol.
- Sweetening agents such as those set forth above, and flavoring agents may be added to provide palatable oral preparations. These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
- Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide SRI 903 or a pharmaceutically acceptable salt thereof in admixture with a dispersing or wetting agent, suspending agent and one or more
- preservatives Suitable dispersing or wetting agents and suspending agents are exemplified by those already mentioned above. Additional excipients, for example sweetening, flavoring and coloring agents, may also be present.
- compositions of the present disclosure may also be in the form of oil- in-water emulsions.
- the oily phase may be a vegetable oil, for example olive oil or arachis oil, or a mineral oil, for example liquid paraffin or mixtures of these.
- Suitable emulsifying agents may be naturally-occurring gums, for example gum acacia or gum tragacanth, naturally-occurring phosphatides, for example soy bean, lecithin, and esters or partial esters derived from fatty acids and hexitol, anhydrides, for example sorbitan monoleate, and condensation reaction products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monoleate.
- the emulsions may also contain sweetening and flavoring agents.
- Syrups and elixirs may be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. Such formulations may also contain a demulcent, a preservative, and flavoring and coloring agents.
- the pharmaceutical compositions may be in the form of a sterile injectable, an aqueous suspension or an oleaginous suspension. This suspension may be formulated according to the known art using those suitable dispersing or wetting agents and suspending agents which have been mentioned above.
- the sterile injectable preparation may also be sterile injectable solution or suspension in a non-toxic parentally acceptable diluent or solvent, for example as a solution in 1,3-butanediol.
- Suitable vehicles and solvents that may be employed are water, Ringer’s solution and isotonic sodium chloride solution.
- sterile, fixed oils are conventionally employed as a solvent or suspending medium.
- any bland fixed oil may be employed including synthetic mono-or diglycerides.
- fatty acids such as oleic acid find use in the preparation of injectables.
- the compound SRI 903, or a compound of Formula (I), or a pharmaceutically acceptable salt thereof may also be administered in the form of suppositories for rectal administration.
- These compositions can be prepared by mixing the compound with a suitable non-irritating excipient which is solid at ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum to release the compound.
- exemplary excipients include cocoa butter and polyethylene glycols.
- compositions for parenteral administrations are administered in a sterile medium.
- the parenteral formulation can either be a suspension or a solution containing dissolved compound.
- Adjuvants such as local anesthetics, preservatives and buffering agents can also be added to parenteral compositions.
- Injectable dosage forms generally include aqueous suspensions or oil suspensions which can be prepared using a suitable dispersant or wetting agent and a suspending agent Injectable forms can be in solution phase or in the form of a suspension, which is prepared with a solvent or diluent.
- Acceptable solvents or vehicles include sterilized water, Ringer's solution, or an isotonic aqueous saline solution.
- sterile oils can be employed as solvents or suspending agents.
- the oil or fatty acid is non-volatile, including natural or synthetic oils, fatty acids, mono-, di- or tri-glycerides.
- the formulation can also be a powder suitable for reconstitution with an appropriate solution as described above. Examples of these include, but are not limited to, freeze dried, rotary dried or spray dried powders, amorphous powders, granules, precipitates, or particulates.
- the formulations can optionally contain stabilizers, pH modifiers, surfactants, bioavailability modifiers and combinations of these.
- the compounds can be formulated for parenteral administration by injection such as by bolus injection or continuous infusion.
- a unit dosage form for injection can be in ampoules or in multi-dose containers.
- the formulations of the invention can be designed to provide quick, sustained, or delayed release of the active ingredient after administration to the patient by employing procedures well known in the art. Thus, the formulations can also be formulated for controlled release or for slow release.
- compositions contemplated by the present invention can include, for example, micelles or liposomes, or some other encapsulated form, or can be administered in an extended release form to provide a prolonged storage and/or delivery effect. Therefore, the formulations can be compressed into pellets or cylinders and implanted intramuscularly or subcutaneously as depot injections. Such implants can employ known inert materials such as silicones and biodegradable polymers, e.g., poly lacti de-poly glycolide. Examples of other biodegradable polymers include poly(orthoesters) and poly(anhydrides).
- the preparation can contain a compound of the invention, dissolved or suspended in a liquid carrier, preferably an aqueous carrier, for aerosol application.
- a liquid carrier preferably an aqueous carrier
- the carrier can contain additives such as solubilizing agents, e.g., propylene glycol, surfactants, absorption enhancers such as lecithin (phosphatidylcholine) or cyclodextrin, or preservatives such as parabens.
- injectable solutions for parenteral application, particularly suitable are injectable solutions or
- the compounds of the invention can be administered to a mammal, especially a human in need of such treatment, prevention, elimination, alleviation or amelioration of a malcondition, disease, disorder, or condition.
- mammals include also animals, both domestic animals, e.g. household pets, farm animals, and non-domestic animals such as wildlife.
- the compounds of the invention are effective over a wide dosage range.
- dosages from about 0.05 to about 5000 mg, preferably from about 1 to about 2000 mg, and more preferably between about 2 and about 2000 mg per day can be used.
- a typical dosage is about 10 mg to about 1000 mg per day.
- the compounds of the invention are dispensed in unit dosage form including from about 0.05 mg to about 1000 mg of active ingredient together with a pharmaceutically acceptable carrier per unit dosage.
- dosage forms suitable for oral, nasal, pulmonal or transdermal administration include from about 125 g to about 1250 mg, preferably from about 250 g to about 500 mg, and more preferably from about 2.5 mg to about 250 mg, of the compounds admixed with a pharmaceutically acceptable carrier or diluent.
- Dosage forms can be administered daily, or more than once a day, such as twice or thrice daily. Alternatively, dosage forms can be administered less frequently than daily, such as every other day, or weekly, if found to be advisable by a prescribing physician.
- SRI 903 is considerably more potent on RORy than the well characterized LXR agonist GW3965 (IC50 43mM) with an IC50 value of ⁇ 100nM in a cell-based promoter-reporter Gal4 assay format, and both compounds lack activity on RORa and ROR in the same assay format. Also as shown in FIG. IB, further evaluation demonstrated that SRI 903 possessed comparable LXR agonist activity to that for GW3965 with EC50 values of 689nM and 154nM, respectively.
- SRI 903 is an inverse agonist of PPARy.
- Further analysis of SRI 903 in a lanthascreen based competitive binding assay demonstrated that SRI 903 had modest binding affinity for PPARy (FIG. 1C) with an IC50 value of 209 nM.
- Analysis of SRI 903 in a Gal4 assay format for PPARy activation demonstrated that while the compound binds the receptor, the compound lacks the ability to activate it, indicating that it likely functions as an antagonist or inverse agonist (FIG. IB).
- the compound’s profile in this assay was similar to that observed with treatment of well characterized PPARy antagonists and inverse agonists 13 14 .
- SRI 903 forms a 3.0 A hydrogen bond with the backbone oxygen of Gly258 as well as hydrophobic interactions with residues of the ligand binding pocket including Arg288, Leu330, and Ile341 (FIG. IE, left bottom panel).
- the combination of a single hydrogen bond and several hydrophobic interactions is consistent with the ligand binding modes exhibited by SR10171 and SRI 1023, suggesting some conservation in this class of non-activating ligands of PPARy.
- the pyridine group of SRI 903 is predicted to make a H-bond to R367, and the biaryl ring system makes hydrophobic contacts with H3 and the b-sheet region (FIG. IE, middle bottom panel).
- the binding mode of SRI 903 revealed a putative mechanism of LXR agonism that is shared with the LXR agonist T0901317 (FIG. IE, right panels) 19 .
- the carbinol group of SR1903 provides a H-bond to H435 stabilizing the Histidine-Tryptophan switch that stabilizes H12 and AF2 20 .
- the methyl group induces a twist in the biaryl ring system preventing them from being co-planer. This is predicted to lead to additional hydrophobic contacts within the pocket formed by H3, H5 and HI 1 leading to activation of LXR.
- the nuclear receptors LXR and RORy play key roles in modulating signaling pathways in immune cells.
- Macrophages which are specialized differentiated mononuclear phagocytic cells, perform key roles in antimicrobial defense, autoimmunity, and
- inflammatory diseases 21 Previously, it has been shown that the expression of RORy is induced in innate immune cells upon infection 22 and in cultured RAW264.7 cells stimulated with LPS 1 , whereas LXRs are regulators of cholesterol homeostasis and negatively regulate TLR signaling in macrophages 23 .
- expression profiling by RNA sequencing was performed on LPS-stimulated RAW264.7 cells treated with IOmM compound compared to cells treated with DMSO-only. As shown in FIG. 2A and FIG.
- LPS stimulation robustly increased the expression of triggering receptor expressed on myeloid cells 1 (TREM1) signaling, a protein that amplifies macrophage inflammatory responses triggered by infection 24 while SRI 903 treatment significantly suppressed its expression.
- TREM1 myeloid cells 1
- TREM1 gene expression is regulated by LXR, PPARy or RORy
- 3kb murine TREM1 promoter region into pGL3 basic reporter vector.
- This TREM1 -promoter reporter (luciferase) was co-transfected into cells with PPARy, RORy, or LXRp each followed by treatment with SRI 903 or DMSO.
- SRI 903 or DMSO SRI 903 or DMSO.
- TREMl promoter activity was induced ⁇ 4 fold by co-expression with RORy compared with the mock vector co-transfection group, and this activity was attenuated by -50% with SRI 903 treatment.
- SRI 903 in one embodiment, is capable of blocking activation of macrophages, a property that is useful in treatment of innate inflammatory disorders.
- LPS-stimulated RAW264.7 cells were treated with SR1903 or GW3965, or DMSO alone for 26 and 50 hr and following treatment, cells were subjected to FACS analysis to detect TREMl protein levels. As shown in FIG. 2D there was a slight difference in the level of TREMl cell surface expression at 26 hr between compound treatment and DMSO only. However, following 50 hr incubation, there was a significant difference between treatments with robust increase in TREMl protein levels for LPS-only treated cells. While both compounds impacted cell surface expression of TREMl, GW3965 only modestly dampened the LPS-induced increase, yet SRI 903 completely blocked the LPS effect.
- RNA sequencing data was inspected to confirm that SRI 903 activates endogenous LXR target genes in LPS-stimulated RAW264.7 cells.
- treatment of macrophages with SRI 903 increased the expression of several LXR target genes including ABCG1 and SCD, proteins involved in cholesterol efflux from macrophages.
- the expression of IL6 and IL33, cytokines repressed by LXR activation were robustly dampened with SRI 903 treatment (FIG. 3A).
- RNA sequencing analysis revealed that treatment of LPS-stimulated RAW cells with SRI 903 differentially modulated the expression of various SENP (SUMO specific protease) isoforms (FIG. 3C). Modulation of SENP3 was confirmed by qPCR in similarly treated cells (FIG. 3D). SENP isoforms regulate the SUMOylation status of a wide range of proteins including NRs 28 29 . Via their hydrolase activity, SENPs cleave the pro form of SUMO at its C-terminus to expose two glycine residues which is critical for SUMO to then be conjugated to substrate proteins.
- SENP SUMO specific protease
- SENPs Using their isopeptidase activity, SENPs also catalyze de conjugation of SUMO from modified proteins. This activity is crucial for recycling of SUMO from substrate proteins.
- Treatment of LPS stimulated RAW cells increased the expression of SENP3 while the expression of SENP2 and SENP6 was repressed.
- SRI 903 possesses similar anti-inflammatory efficacy to that previously observed with SR2211, SRI 903 was evaluated in the collagen-induced arthritis mouse model 30 .
- CIA mice were also treated with GW3965, a selective LXR agonist and the polypharmacologic modulator T0901317, a modestly potent RORy inverse agonist with potent LXR agonist activity 31 .
- DBA/1J mice were injected with chicken type II collagen on day 1 and then each animal received a boost injection of collagen on Day 21.
- mice treated with SRI 903 had enhanced thymocyte differentiation and survival compared to mice treated with either the selective LXR agonist GW3965 or the dual LXR agonist/RORy inverse agonist T0901317 (FIG. 9A).
- This result was unexpected given that it has been shown previously that either repression of RORy or agonism of LXR or PPARy causes T cell apoptosis.
- SRI 903 treatment improved both fasting and fed insulin levels. While compound treatment did not alter fasting leptin levels, the hormone was statistically reduced when measured in freely feeding mice as compared to vehicle treated animals.
- SRI 903 had no effect on mice treated with compound when evaluated in a conditioned taste aversion paradigm 34 (FIG. 9D).
- DIO mice treated with SRI 903 were subjected to a leptin sensitivity test. Leptin resistance in DIO mice was reduced by SRI 903 treatment as shown in FIG. 4F. Consistent with this observation Socs3 (suppressor of cytokine signaling-3) expression was repressed in the hypothalamus of DIO mice following SRI 903 treatment (FIG. 4G). Hypothalamic Socs3 has been shown to be a negative regulator of leptin receptor signaling 35 .
- mice In mice, the involution of thymus is detectable within one year of age 36 and the rate of involution is accelerated in obesity 37 .
- SRI 903 treated DIO mice were protected from obesity related thymic involution as indicated by an increase in thymus weight and preservation of thymocytes (FIG. 9E).
- FIG. 9F comparison of T cells from SRI 903 treated and vehicle treated DIO mice demonstrated the compound had no effect on differentiation of ab TCR + CD4 + and ab TCR + CD8 + cells; whereas there was an increase in ld T cell differentiation.
- RORy inverse agonists are currently under clinical development for treatment of various autoimmune diseases 38 .
- LXR agonists have been in clinical development for treatment of dyslipidemia and inflammatory diseases 39 .
- PPARy agonists and partial agonists have been approved and have been in clinical development for metabolic disease, inverse agonists of this receptor conceptually hold promise for a wide range of diseases including osteoporosis and cancer 14 .
- the present disclosure relates to methods and uses of the polypharmacological modulator SRI 903 which functions as a potent RORy inverse agonist with modest agonist activity on LXR and mild repression (inverse agonism) of PPARy in a range of biophysical and cellular models.
- SRI 903 Treatment of macrophages with SRI 903 resulted in nearly complete blockade of activation of TREM-1 expression and cell surface protein whereas treatment with the selective LRX agonist GW3965 only had modest impact on TREM-1 expression and little effect on cell surface protein levels. Because excessive inflammation can lead to tissue and organ damage, these data position SRI 903 a useful therapeutic for innate immune disorders.
- Nuclear receptors function as ligand-modulated transcription factors controlling gene expression programs involved in numerous biological processes. The activity of NRs can be increased or decreased by administration of exogenous natural or synthetic ligands making them attractive drug targets for treatment of a wide range of diseases 1 . However, pleiotropic effects have limited the clinical utility of several approved NR modulators and ended clinical development of many more.
- RORy inverse agonists are currently under clinical development for treatment of various autoimmune diseases 38 .
- LXR agonists have been in clinical development for treatment of dyslipidemia and inflammatory diseases 39 .
- PPARy agonists and partial agonists have been approved and have been in clinical development for metabolic disease, inverse agonists of this receptor conceptually hold promise for a wide range of diseases including osteoporosis and cancer 14 .
- the present disclosure relates to methods and uses of the polypharmacological modulator SRI 903 which functions as a potent RORy inverse agonist with modest agonist activity on LXR and mild repression (inverse agonism) of PPARy in a range of biophysical and cellular models.
- SRI 903 Treatment of macrophages with SRI 903 resulted in nearly complete blockade of activation of TREM-1 expression and cell surface protein whereas treatment with the selective LRX agonist GW3965 only had modest impact on TREM-1 expression and little effect on cell surface protein levels. Because excessive inflammation can lead to tissue and organ damage, these data position SRI 903 a useful therapeutic for innate immune disorders, for example.
- Step 1 4'-(l,l,l,3,3,3-hexafluoro-2-hydroxypropan-2-yl)-2-methyl-[l,r-biphenyl]-4- carbaldehyde
- Step 2 l,l,l,3,3,3-hexafluoro-2-(2'-methyl-4'-((4-(pyridin-4-ylmethyl)piperazin-l- yl)methy 1)- [1,1 '-biphenyl] -4-yl)propan-2-ol
- HEK293T cells and EL4 cells were maintained in DMEM and RAW264.7 cells (American Type Culture Collection) were maintained in RPMI-1640 with 10% heat inactivated FBS and antibiotics (penicillin, streptomycin; Invitrogen).
- OP9 cells (American Type Culture collection) were maintained in Alpha minimum essential medium (MEM-alpha) with 20% heat inactivated FBS. Twenty- four hours post-confluence, the OP9 cells were differentiated with IBMX (0.5nM), dexamethasone (ImM), Insulin (10pg/mL) for 48 hrs.
- Reporter gene assays Twenty-four hours before transfection, HEK293T cells were plated in 96-well plates at a density of 15 c 10 3 cells per well. UAS: luciferase reporter and Gal4- RORa, Gal4-RORb, Gal4-RORy, Gal4-LXRa, or Gal4 PPARy DNA co-transfections were performed using X-tremeGENE 9 (Roche). Twenty-four hours after transfection, the cells were treated with vehicle or compound. Twenty -four hours after treatment, the luciferase activity was measured using the Dual-Glo luciferase assay system (Promega). Results were analyzed using GraphPad Prism software.
- TREM1 promoter cloning and reporter assay TREMl promoter region (79555-76200 Mus musculus BAC clone CH25-69K1 from chromosome 17, Sequence ID: AC241601.3) was PCR amplified from genomic DNA (pancreatic tissue) and sub-cloned into pGL3-Basic vector with Kpnl/Xhol restriction sites. The 3,356bp region of mTREMl promoter was verified by DNA sequencing. Each LXR , PPARy, and RORy full length plasmid was co- transfected with TREMl/pGL3 using X-tremeGENE 9 into HEK293T cells. After 48hrs, luciferase activity was measured using BriteLite plus assay system (PerkinElmer).
- PPARy competitive-binding assay (Invitrogen) was performed according to the manufacturer’s protocol A mixture of 5 nM glutathione S-transferase fused with the PPARy ligand-binding domain (GST-PPARy-LBD), 5 nM Tb-GST-antibody, 5 nM
- Fluormone Pan-PPAR Green and serial dilutions of compound beginning at 10 mM downwards was added to wells of black 384-well low-volume plates (Greiner) to a total volume of 18 m ⁇ . All dilutions were made in Time-resolved (TR)-fluorescence resonance energy transfer (FRET) PPAR assay buffer. DMSO at 2% final concentration was used as a no-ligand control. Experiments were performed in triplicate and incubated for 2 h in the dark before analysis in Perkin Elmer ViewLux ultra HTS microplate reader. The FRET signal was measured by excitation at 340 nm and emission at 520 nm for fluorescein and 490 nm for terbium.
- TR Time-resolved
- FRET fluorescence resonance energy transfer
- the fold change over DMSO was calculated by 520 nm/490 nm ratio. Graphs were plotted in GraphPad Prism as fold change of FRET signal for each compound over DMSO- only control and effector concentration for half-maximum response calculated.
- Tb-anti-His antibody (lOnM; Invitrogen) and indicated ligand (luM) were incubated in complete TR-FRET PPAR assay buffer (Invitrogen) containing lOnM purified His-PPARy2 for 1 hr at room temperature.
- 450nM FITC-labeled peptides p300 (sequence: ASKHKQLSELLRSGSS was added and incubated for additional two hrs at room temperature (in dark).
- the FRET signal was measured by excitation at 340 nm and emission at 520 nm for fluorescein and 490 nm for terbium in Perkin Elmer ViewLux ultra HTS microplate reader.
- the fold change over DMSO was calculated by 520 nm/490 nm ratio. Each sample condition has four replicates.
- RNA extraction protocol for RNA seq was derived from Qiagen Kit-74106. Total RNA was quantified using the Qubit 2.0 Fluorometer (Invitrogen, Carlsbad, CA) and run on the Agilent 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA) for quality assessment. RNA samples of good quality with RNA Integrity Number (RIN) > 8.0 were further processed. A RNase-free working environment was maintained and RNase-free tips, Eppendorf tubes and plates were utilized for the subsequent steps.
- RNA was selectively isolated from total RNA (300ng input) using poly-T oligos attached to magnetic beads and converted to sequence-ready libraries using the TruSeq stranded mRNA sample prep protocol (Cat. #: RS-122-2101, Illumina, San Diego, CA).
- the final libraries were validated on the bioanalyzer DNA chips and qPCR quantified using primers that recognize the illumina adaptors.
- the libraries were then pooled at equimolar ratios, quantified using qPCR and loaded onto the NextSeq 500 flow cell at 1.8pM final concentration. They were sequenced using the high-output, paired-end, 75-bp chemistry.
- mice All mice were maintained in a specific pathogen-free environment in accordance with institutional protocol. All procedures were reviewed and approved by The Scripps Research Institute animal care and use committee. Male DIO mice, 22 weeks of age, were purchased from Jackson laboratories and fed a high fat diet (60% kCal % fat, Research Diets) for the duration of the study. Female DBA/1J mice were purchased from Taconic. CIA was induced in 8 weeks as previously described 40 .
- Peptide Identification Peptides were identified using tandem MS (MS/MS) experiments performed with a QExactive (ThermoFisher, San Jose, CA) over a 70 min gradient. Product ion spectra were acquired in a data-dependent mode and the five most abundant ions were selected for the product ion analysis per scan event. The MS/MS *.raw data files were converted to *.mgf files and then submitted to MASCOT (version 2.3 Matrix Science, London, UK) for peptide identification. The maximum number of missed cleavages was set at 4 with the mass tolerance for precursor ions +/- 0.6 Da and for fragment ions +/- 8ppm. Oxidation to methionine was selected for variable modification.
- Pepsin was used for digestion and no specific enzyme was selected in the MASCOT during the search. Peptides included in the peptide set used for HDX detection had a MASCOT score of 20 or greater.
- the MS/MS MASCOT search was also performed against a decoy (reverse) sequence and false positives were ruled out if they did not pass a 1% false discovery rate.
- the MS/MS spectra of all the peptide ions from the MASCOT search were further manually inspected and only the unique charged ions with the highest MASCOT score were included in HDX peptide set.
- HDX analysis 10 mM of the apo protein (LXRa LBD and PPARy LBD) was mixed with 1 : 10 molar excess of ligand and incubated for 2 hours at 4°C for complex formation before subjecting them to HDX analysis.
- 5 pi of either the apo or the liganded protein complex were mixed with 20 m ⁇ of DrO-containing HDX buffer (50mM HEPES pH 7.5,1 M NaCl, 3 mM DTT) and incubated at 4°C for Os, 10s, 30s, 60s, 900s or 3,600s.
- the bound peptides were then gradient-eluted (5-50% CH3CN v/v and 0.3% v/v formic acid) across a 1.0 mm x 50 mm Cie separation column (Hypersil Gold, Thermo Fisher, Grand Island, NY) for 6 min. Sample handling and peptide separation were conducted at 4°C. The eluted peptides were then subjected to electrospray ionization directly coupled to a high resolution Orbitrap mass spectrometer (QExactive or Exactive, ThermoFisher, San Jose, CA). Each HDX experiment was carried out in triplicate with a single preparation of each protein-ligand complex.
- the intensity weighted mean m/z centroid value of each peptide envelope was calculated and subsequently converted into a percentage of deuterium incorporation. This is accomplished by determining the observed averages of the undeuterated and fully deuterated spectra using the conventional formula described elsewhere 42 . In the absence of a fully deuterated control, 100% deuterium incorporation was calculated theoretically, and corrections for back-exchange were made on the basis of an estimated 70% deuterium recovery and accounting for 80% final deuterium concentration in the sample (1:5 dilution in D2O HDX buffer). Statistical significance for the differential HDX data is determined by an unpaired t-test for each time point, a procedure that is integrated into the HDX Workbench software 43 .
- the model for SRI 903 was generated using PRODRG 44 .
- the ICM Pro suite Molsoft was used to dock SR1903 into the PPARy LBD structure.
- PDB 6C5Q with ligands and waters removed was used as the starting model for docking 15 .
- the receptor was prepared for docking by protonation and energy minimization by means of the ICM force field and distance dependent dielectric potential.
- PocketFinder within ICM was used to define the ligand binding pocket and was consistent with previously published X-ray structures. Default settings within the ICM docking module were used with a rectangular box centered at the LBP. The top ranked docked result was chosen due to its similarity to previously solved crystal structures of SR10171 and SRI 1023.
- RAW264.7 cells (American Type Culture Collection) were pre-incubated with 5mM 1903 for 18h then stimulated with lpg/mL LPS (Escherichia coli 0127:B8, Sigma-Aldrich (St. Louis, MO)) for 6h. RAW264.7 cells were stained with APC conjugated anti- TREM-1 antibody
- Leptin sensitivity assay Mice from 18 to 24 weeks of age were individually caged. Murine leptin (Sigma) (1.5 ug/g body weight) were injected intraperitoneally twice daily (7:00 am and 7:00pm) for 3 days. Body weight and food intake were measured daily.
- Glucose tolerance test Male mice were used because they are more hormonally stable. For a glucose tolerance test, 24 weeks old mice fed on a HFD were fasted overnight and glucose was administered intraperitoneally (1.5 mg/kg body weight). Glucose levels were measured in blood withdrawn from the tail.
- ELISA enzyme-linked immunosorbent assay
- benzenesulfoamide T0901317 [N-(2,2,2-trifluoroethyl)-N-[4-[2,2,2-trifluoro-l-hydroxy-l- (trifluoromethyl)ethy 1] phenyl] -benzenesulfonamide] is a novel retinoic acid receptor- related orphan receptor-alpha/gamma inverse agonist. Mol Pharmacol 77, 228-236.
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US20080247955A1 (en) * | 2007-01-16 | 2008-10-09 | Jun Kuai | Inflammation treatment, detection and monitoring via TREM-1 |
WO2017007712A1 (en) * | 2015-07-04 | 2017-01-12 | Emory University | Use of trem-1 inhibitors for treatment, elimination and eradication of hiv-1 infection |
US9586928B2 (en) * | 2011-05-16 | 2017-03-07 | The Scripps Research Institute | Modulators of the nuclear hormone receptor ROR |
US20180085348A1 (en) * | 2015-03-12 | 2018-03-29 | The Regents Of The University Of California | Methods for treating cancer with rorgamma inhibitors |
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US20080247955A1 (en) * | 2007-01-16 | 2008-10-09 | Jun Kuai | Inflammation treatment, detection and monitoring via TREM-1 |
US9586928B2 (en) * | 2011-05-16 | 2017-03-07 | The Scripps Research Institute | Modulators of the nuclear hormone receptor ROR |
US20180085348A1 (en) * | 2015-03-12 | 2018-03-29 | The Regents Of The University Of California | Methods for treating cancer with rorgamma inhibitors |
WO2017007712A1 (en) * | 2015-07-04 | 2017-01-12 | Emory University | Use of trem-1 inhibitors for treatment, elimination and eradication of hiv-1 infection |
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Title |
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MI RA CHANG, ANTHONY CIESLA, TIMOTHY S. STRUTZENBERG, SCOTT J. NOVICK, YUANJUN HE, RUBEN D. GARCIA-ORDONEZ, REBECCA L. FRKIC, JOHN: "Unique Polypharmacology Nuclear Receptor Modulator Blocks Inflammatory Signaling Pathways", ACS CHEMICAL BIOLOGY., vol. 13, no. 5, 5 April 2019 (2019-04-05), pages 1051 - 1062, XP055745177, ISSN: 1554-8929, DOI: 10.1021/acschembio.9b00236 * |
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