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Background: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease caused by the loss of motor neurons, and development of effective medicines is urgently required. Induced pluripotent stem cell (iPSC)-based drug repurposing identified the Src/c-Abl inhibitor bosutinib, which is approved for the treatment of chronic myelogenous leukemia (CML), as a candidate for the molecular targeted therapy of ALS. Methods: An open-label, multicentre, dose-escalation phase 1 study using a 3 + 3 design was conducted in 4 hospitals in Japan to evaluate the safety and tolerability of bosutinib in patients with ALS. Furthermore, the exploratory efficacy was evaluated using Revised ALS Functional Rating Scale (ALSFRS-R), predictive biomarkers including plasma neurofilament light chain (NFL) were explored, and single-cell RNA sequencing of iPSC-derived motor neurons was conducted. Patients, whose total ALSFRS-R scores decreased by 1-3 points during the 12-week, received escalating doses starting from 100 mg quaque die (QD) up to 400 mg QD based on dose-limiting toxicity (DLT) occurrence, and all participants who received one dose of the study drug were included in the primary analysis. This trial is registered with ClinicalTrials.gov, NCT04744532, as Induced pluripotent stem cell-based Drug Repurposing for Amyotrophic Lateral Sclerosis Medicine (iDReAM) study. Findings: Between March 29, 2019 and May 7, 2021, 20 patients were enrolled, 13 of whom received bosutinib treatment and 12 were included in the safety and efficacy analyses. No DLTs were observed up to 300 mg QD, but DLTs were observed in 3/3 patients of the 400 mg QD cohort. In all patients receiving 100 mg-400 mg, the prevalent adverse events (AEs) were gastrointestinal AEs in 12 patients (92.3%), liver function related AEs in 7 patients (53.8%), and rash in 3 patients (23.1%). The safety profile was consistent with that known for CML treatment, and ALS-specific AEs were not observed. A subset of patients (5/9 patients) was found to respond well to bosutinib treatment over the 12-week treatment period. It was found that the treatment-responsive patients could be distinguished by their lower levels of plasma NFL. Furthermore, single-cell RNA sequencing of iPSC-derived motor neurons revealed the pathogenesis related molecular signature in patients with ALS showing responsiveness to bosutinib. Interpretation: This is the first trial of a Src/c-Abl inhibitor, bosutinib, for patients with ALS. The safety and tolerability of bosutinib up to 300 mg, not 400 mg, in ALS were described, and responsiveness of patients on motor function was observed. Since this was an open-label trial within a short period with a limited number of patients, further clinical trials will be required. Funding: AMED and iPS Cell Research Fund.
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Continuing medicinal chemistry studies to identify spiropiperidine-derived NPY Y5 receptor antagonists are described. Aryl urea derivatives of a variety of spiropiperidines were tested for their NPY Y5 receptor binding affinities. Of the spiropiperidines so far examined, spiro[3-oxoisobenzofurane-1(3H),4'-piperidine] was a useful scaffold for producing orally active NPY Y5 receptor antagonists. Oral administration of 5c significantly inhibited the Y5 agonist-induced food intake in rats with a minimum effective dose of 3mg/kg. In addition, this compound was efficacious in decreasing body weight in diet-induced obese mice.
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Fármacos Antiobesidade/química , Piperidinas/química , Receptores de Neuropeptídeo Y/antagonistas & inibidores , Compostos de Espiro/química , Ureia/análogos & derivados , Administração Oral , Animais , Fármacos Antiobesidade/síntese química , Fármacos Antiobesidade/farmacologia , Ingestão de Alimentos , Humanos , Camundongos , Piperidinas/síntese química , Piperidinas/farmacologia , Ratos , Receptores de Neuropeptídeo Y/metabolismo , Compostos de Espiro/síntese química , Compostos de Espiro/farmacologia , Ureia/síntese química , Ureia/farmacologia , Redução de PesoRESUMO
Spiroindoline urea derivatives, designed to act as NPY Y5 receptor antagonists, were synthesized and their structure-activity relationships were investigated. Of these derivatives, compound 3a showed good Y5 binding affinity with favorable pharmacokinetic properties. Compound 3a significantly inhibited bPP Y5 agonist-induced food intake in rats, and suppressed body weight gain in DIO mice.
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Fármacos Antiobesidade/química , Fármacos Antiobesidade/farmacologia , Indóis/química , Indóis/farmacologia , Receptores de Neuropeptídeo Y/antagonistas & inibidores , Receptores de Neuropeptídeo Y/metabolismo , Animais , Fármacos Antiobesidade/síntese química , Fármacos Antiobesidade/farmacocinética , Disponibilidade Biológica , Peso Corporal/efeitos dos fármacos , Ingestão de Alimentos/efeitos dos fármacos , Indóis/síntese química , Indóis/farmacocinética , Camundongos , Camundongos Endogâmicos C57BL , Estrutura Molecular , Ligação Proteica , Ratos , Ratos Sprague-Dawley , Receptores de Neuropeptídeo Y/agonistas , Compostos de Espiro/síntese química , Compostos de Espiro/química , Compostos de Espiro/farmacocinética , Compostos de Espiro/farmacologia , Relação Estrutura-AtividadeRESUMO
INTRODUCTION: Amyotrophic lateral sclerosis (ALS) is a progressive and severe neurodegenerative disease caused by motor neuron death. There have as yet been no fundamental curative medicines, and the development of a medicine for ALS is urgently required. Induced pluripotent stem cell (iPSC)-based drug repurposing identified an Src/c-Abl inhibitor, bosutinib, as a candidate molecular targeted therapy for ALS. The objectives of this study are to evaluate the safety and tolerability of bosutinib for the treatment of patients with ALS and to explore the efficacy of bosutinib on ALS. This study is the first clinical trial of administered bosutinib for patients with ALS. METHODS AND ANALYSIS: An open-label, multicentre phase I dose escalation study has been designed. The study consists of a 12-week observation period, a 1-week transitional period, a 12-week study treatment period and a 4-week follow-up period. After completion of the transitional period, subjects whose total ALS Functional Rating Scale-Revised (ALSFRS-R) score decreased by 1-3 points during the 12-week observation period receive bosutinib for 12 weeks. Three to six patients with ALS are enrolled in each of the four bosutinib dose levels (100, 200, 300 or 400 mg/day) to evaluate the safety and tolerability under a 3+3 dose escalation study design. Dose escalation and maximum tolerated dose are determined by the safety assessment committee comprising oncologists/haematologists and neurologists based on the incidence of dose-limiting toxicity in the first 4 weeks of the treatment at each dose level. A recommended phase II dose is determined by the safety assessment committee on completion of the 12-week study treatment in all subjects at all dose levels. The efficacy of bosutinib is also evaluated exploratorily using ALS clinical scores and biomarkers. ETHICS AND DISSEMINATION: This study received full ethical approval from the institutional review board of each participating site. The findings of the study will be disseminated in peer-reviewed journals and at scientific conferences. TRIAL REGISTRATION NUMBER: UMIN000036295; Pre-results, JMA-IIA00419; Pre-results.
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Esclerose Lateral Amiotrófica/tratamento farmacológico , Compostos de Anilina/administração & dosagem , Nitrilas/administração & dosagem , Inibidores de Proteínas Quinases/administração & dosagem , Quinolinas/administração & dosagem , Adulto , Ensaios Clínicos Fase I como Assunto , Reposicionamento de Medicamentos/métodos , Feminino , Humanos , Masculino , Terapia de Alvo Molecular/métodos , Neurônios Motores/efeitos dos fármacos , Células-Tronco Pluripotentes/efeitos dos fármacosRESUMO
Preclinical studies suggest that ALK-1 signaling mediates a complementary angiogenesis pathway activated upon development of resistance to vascular endothelial growth factor (VEGF)-targeted therapies. Inhibition of ALK-1 signaling may lead to disruption of tumor angiogenesis and growth. We report findings from a multicenter, open-label, phase I study of the fully human anti-ALK-1 mAb PF-03446962 conducted in Japan and South Korea, in Asian patients with advanced solid tumors. The dose escalation Part 1 of the study was based on a standard 3 + 3 design (n = 16). In Part 2, patients were treated with PF-03446962 at 7 and 10 mg/kg (10/cohort), including patients with disease progression following prior VEGF receptor (R)-targeted therapy. Primary objectives were determination of the maximum tolerated dose (MTD) and recommended phase II dose (RP2D). Secondary objectives included safety, pharmacokinetics, pharmacodynamics, and antitumor activity of PF-03446962. No dose-limiting toxicity (DLT) was noted in the 12 DLT-evaluable patients. Treatment was well tolerated. The MTD for biweekly intravenous administration was estimated to be 10 mg/kg and the RP2D 7 mg/kg. Treatment-related grades 1-3 thrombocytopenia was experienced by 27.8% patients. The most frequent nonhematologic treatment-related AEs were grades 1-2 pyrexia and epistaxis. Four patients (3/4 with hepatocellular carcinoma) developed telangiectasia suggesting vascular targeting and in vivo ALK-1 inhibition by PF-03446962. Stable disease for 12 weeks or more was observed in 25.7% of patients and in 44.4% of those with hepatocellular carcinoma. ALK-1 inhibition by PF-03446962 may represent a novel antiangiogenic strategy for patients with advanced solid malignancies complementary to current treatment with VEGF(R)-targeted inhibitors or chemotherapy.
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Anticorpos Monoclonais/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias/tratamento farmacológico , Neoplasias/patologia , Inibidores de Proteínas Quinases/uso terapêutico , Receptores de Activinas Tipo II/antagonistas & inibidores , Adulto , Idoso , Anticorpos Monoclonais/administração & dosagem , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais/farmacocinética , Anticorpos Monoclonais Humanizados , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Antineoplásicos/farmacocinética , Povo Asiático , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias/diagnóstico por imagem , Neoplasias/metabolismo , Inibidores de Proteínas Quinases/administração & dosagem , Inibidores de Proteínas Quinases/efeitos adversos , Inibidores de Proteínas Quinases/farmacocinética , Retratamento , Resultado do TratamentoRESUMO
BACKGROUND: ADAM22 is a member of the ADAM gene family, but the fact that it is expressed only in the nervous systems makes it unique. ADAM22's sequence similarity to other ADAMs suggests it to be an integrin binder and thus to have a role in cell-cell or cell-matrix interactions. To elucidate the physiological functions of ADAM22, we employed gene targeting to generate ADAM22 knockout mice. RESULTS: ADAM22-deficient mice were produced in a good accordance with the Mendelian ratio and appeared normal at birth. After one week, severe ataxia was observed, and all homozygotes died before weaning, probably due to convulsions. No major histological abnormalities were detected in the cerebral cortex or cerebellum of the homozygous mutants; however, marked hypomyelination of the peripheral nerves was observed. CONCLUSION: The results of our study demonstrate that ADAM22 is closely involved in the correct functioning of the nervous system. Further analysis of ADAM22 will provide clues to understanding the mechanisms of human diseases such as epileptic seizures and peripheral neuropathy.
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Proteínas ADAM/deficiência , Proteínas ADAM/fisiologia , Ataxia/metabolismo , Fibras Nervosas Mielinizadas/metabolismo , Proteínas do Tecido Nervoso/deficiência , Proteínas do Tecido Nervoso/fisiologia , Doenças do Sistema Nervoso Periférico/metabolismo , Proteínas ADAM/genética , Animais , Ataxia/genética , Ataxia/patologia , Células Cultivadas , Feminino , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Fibras Nervosas Mielinizadas/patologia , Proteínas do Tecido Nervoso/genética , Nervos Periféricos/metabolismo , Nervos Periféricos/patologia , Doenças do Sistema Nervoso Periférico/genética , Doenças do Sistema Nervoso Periférico/patologiaRESUMO
The early diagnosis of mesothelioma, an aggressive malignant tumor, is considered to be important for prognosis. X-ray is commonly used for the assessment of a mass in a population exhibiting a risk factor. However, there are currently no available studies indicating that such an assessment may be used to achieve early diagnosis and improve the patient's outcome. We previously reported that N-ERC/mesothelin may be a useful blood tumor marker for mesothelioma. In order to investigate whether this tumor marker is useful for early diagnosis in a mass examination, in 2007 we initiated a 5-year large-scale screening of construction workers with a risk of asbestos exposure in Japan. Blood samples were collected annually and N-ERC/mesothelin levels were determined. Based on the results of those findings, along with medical history and related data, we screened the participants to identify a high-risk population. As a result, 62 subjects were identified among ~40,000 participants as the high-risk population. Two of these 62 participants subsequently developed mesothelioma, although the remaining participants have not yet developed mesothelioma. In conclusion, N-ERC/mesothelin may be useful as a blood tumor marker in the early diagnosis of mesothelioma in a mass examination. A future prospective study to confirm the findings of this research screening is currently under planning.
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AIM: This phase I study evaluated sunitinib plus modified FOLFOX6 (mFOLFOX6: 5-fluorouracil, leucovorin and oxaliplatin) in Japanese patients with treatment-naïve metastatic colorectal cancer. PATIENTS AND METHODS: Sunitinib was administered orally (37.5 mg/day, 4 weeks on, 2 weeks off [Schedule 4/2; arm A] or 50 mg/day, 2 weeks on, 2 weeks off [Schedule 2/2; arm B]) with mFOLFOX6. RESULTS: In arms A/B, respectively (n=6 each): median relative dose intensity was 50.4%/89.1% for sunitinib and 39.2-69.8%/73.0-80.5% for mFOLFOX6 components. Most adverse events were grade 1/2. The most frequent grade 3/4 adverse events were neutropenia, thrombocytopenia, and leukopenia. No significant drug-drug interactions were detected. Four patients had objective responses in each arm. CONCLUSION: Sunitinib plus mFOLFOX6 had acceptable tolerability, with the Schedule 2/2 combination being generally more manageable than the Schedule 4/2. Based on two global trials and the present study, sunitinib on Schedule 2/2 combined with chemotherapy may be considered, if further first-line trials are planned.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Fluoruracila/uso terapêutico , Leucovorina/uso terapêutico , Compostos Organoplatínicos/uso terapêutico , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Feminino , Humanos , Indóis/administração & dosagem , Japão , Masculino , Pessoa de Meia-Idade , Oxaliplatina , Pirróis/administração & dosagem , SunitinibeRESUMO
(9S)-9-(2-Hydroxy-4,4-dimethyl-6-oxo-1-cyclohexen-1-yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1-one ((S)-1) was identified as a selective and orally active neuropeptide Y Y5 receptor antagonist. The structure-activity relationship for this structural class was investigated and showed that limited substitution on the phenyl ring was tolerated and that modification of the 4,4-dimethyl group of the cyclohexenone and the 3,3-dimethyl group of the xanthenone parts slightly improved potency. The plasma concentration-time profile after oral administration of (S)-1 in Sprague-Dawley (SD) rats showed significant in vivo racemization of (S)-1 and that (S)-1 is cleared much more quickly than (R)-1. The duration of (S)-1 in SD rats after oral administration of (RS)-1 racemate was twice as long as that following oral administration of (S)-1. The C max values of (S)-1 after administration of (S)-1 and (RS)-1 were comparable, and the brain to plasma ratio for (S)-1 was 0.34 in SD rats. In our acute D-Trp (34)NPY-induced food intake model, both (S)-1 and (RS)-1 showed potent and dose-dependent efficacy. Therefore, the use of (RS)-1 is suitable for studies that require sustained plasma exposure of (S)-1.
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Cicloexanonas/administração & dosagem , Cicloexanonas/química , Receptores de Neuropeptídeo Y/antagonistas & inibidores , Receptores de Neuropeptídeo Y/metabolismo , Xantenos/administração & dosagem , Xantenos/química , Administração Oral , Ração Animal , Animais , Barreira Hematoencefálica/metabolismo , Linhagem Celular , Cicloexanonas/síntese química , Cicloexanonas/metabolismo , Humanos , Estrutura Molecular , Ratos , Ratos Sprague-Dawley , Relação Estrutura-Atividade , Xantenos/síntese química , Xantenos/metabolismoRESUMO
A series of phenylpiperazine derivatives were synthesized and evaluated for their neuropeptide Y (NPY) Y5 receptor antagonistic activities. The benzindane portion of 2 was replaced by 1-phenylpiperazine, resulting in novel urea derivative 3f. Subsequent optimization of the phenylpiperazine template by substitution of the phenyl moiety resulted in a series of (2-methanesulfonamidephenyl)piperazine derivatives that showed potent binding affinity and antagonistic activity for the Y5 receptor.
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Piperazinas/química , Receptores de Neuropeptídeo Y/antagonistas & inibidores , Humanos , Estrutura Molecular , Piperazinas/síntese química , Receptores de Neuropeptídeo Y/metabolismo , Relação Estrutura-AtividadeRESUMO
Bolus-administered intracerebroventricular (ICV) relaxin-3 has been reported to increase feeding. In this study, to examine the role of relaxin-3 signaling in energy homeostasis, we studied the effects of chronically administered ICV relaxin-3 on body weight gain and locomotor activity in rats. Two groups of animals received vehicle or relaxin-3 at 600 pmol/head/day, delivered with Alzet osmotic minipumps. In animals receiving relaxin-3, food consumption and weight gain were statistically significantly higher than those in the vehicle group during the 14-day infusion. During the light phase on days 2 and 7 and the dark phase on days 3 and 8, there was no difference in locomotor activity between the two groups. Plasma concentrations of leptin and insulin in rats chronically injected with relaxin-3 were significantly higher than in the vehicle-injected controls. These results indicate that relaxin-3 up-regulates food intake, leading to an increase of body weight and that relaxin-3 antagonists might be candidate antiobesity agents.
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Peso Corporal/efeitos dos fármacos , Relaxina/análogos & derivados , Animais , Peso Corporal/fisiologia , Ingestão de Alimentos/efeitos dos fármacos , Ingestão de Alimentos/fisiologia , Humanos , Injeções Intraventriculares , Insulina/sangue , Leptina/sangue , Masculino , Atividade Motora/efeitos dos fármacos , Proteínas do Tecido Nervoso/antagonistas & inibidores , Proteínas do Tecido Nervoso/fisiologia , Obesidade/tratamento farmacológico , Obesidade/etiologia , Obesidade/fisiopatologia , Ratos , Ratos Wistar , Proteínas Recombinantes/administração & dosagem , Relaxina/administração & dosagem , Relaxina/antagonistas & inibidores , Relaxina/fisiologia , Transdução de Sinais/efeitos dos fármacosRESUMO
PURPOSE: Multidrug resistance-associated protein 3 (MRP3) was initially cloned as a hepatic transporter induced under cholestatic/ hyperbilirubinemic conditions. In the present study, transport property of human MRP3 (hMRP3) was compared with that of rat MRP3 (rMRP3). METHODS: Adenosine 5' triphosphate (ATP)-dependent uptake of several organic anions into the membrane vesicles isolated from the Sf9 cells expressing hMRP3 and rMRP3 was measured by rapid filtration technique. RESULTS: ATP-dependent uptake of glucuronide conjugates, glutathione conjugates. and [3H]methotrexate (MTX) was stimulated by infection of cDNAs for hMRP3 and rMRP3. The mean (+/- SE) Km values for the uptake of 17beta estradiol 17beta-D-glucuronide ([3H]E(2)17 betaG) by hMRP3 and rMRP3 were 42.9 +/- 4.3 microM and 33.4 +/- 2.2 microM, respectively. Although the Ki values of glucuronides on the uptake of E217betaG were similar in humans and rats, hMRP3 exhibited higher Ki values toward MTX. In addition, although glycocholate and taurolithocholate 3-sulfate (TLC-S) were transported by both hMRP3 and rMRP3, taurocholate was only transported to a significant degree by rMRP3. Moreover, the inhibitory effect of taurocholate and glycocholate on the transport of E(2)17beta3G was much more potent in rMRP3 compared to hMRP3. CONCLUSION: Collectively, the substrate specificity of hMRP3 resembles that of rMRP3 although differences were observed, particularly in bile acid transport.
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Subfamília B de Transportador de Cassetes de Ligação de ATP/fisiologia , Transportadores de Cassetes de Ligação de ATP/fisiologia , Trifosfato de Adenosina/metabolismo , Animais , Baculoviridae/genética , Transporte Biológico , Linhagem Celular , Membrana Celular/metabolismo , Vetores Genéticos , Glucuronídeos/metabolismo , Glutationa/metabolismo , Humanos , Metotrexato/metabolismo , Ratos , Especificidade por SubstratoRESUMO
A series of substituted 4-alkoxy-2-aminopyridines 2, which were formally derived from neuropeptide Y1 antagonist 1 by replacing the morpholino portion with alkoxy groups, were synthesized and evaluated as neuropeptide Y Y1 receptor antagonists. Primary structure-activity relationships and identification of potent 4-alkoxy derivatives are described.