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Song X, Gan Q, Zhang X, Zhang J. Synthesis and Biological Evaluation of Novel 99mTc-Labeled Palbociclib Derivatives Targeting Cyclin-Dependent Kinase 4/6 (CDK4/6) as Potential Cancer Imaging Agents. Mol Pharm 2019; 16:4213-4222. [PMID: 31424939 DOI: 10.1021/acs.molpharmaceut.9b00540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cancer results from cell proliferation that exceeds normal growth control. There are various specific proteins that control and regulate the cell cycle, such as cyclin-dependent kinases (CDKs), cyclins, and retinoblastoma protein (pRb). The aberration of the cyclin D-CDK4/6-INK4-pRb pathway occurs frequently in cancers; thus, CDK4/6 is an attractive target for the development of radiopharmaceuticals for tumor imaging. In this study, we chose palbociclib, which was approved by the FDA for treating ER+/HER2- advanced breast cancer as the target vector and the isonitrile group, which can coordinate strongly with the [99mTc(CO)3]+ core as the bifunctional chelator, to develop four novel 99mTc-labeled radiotracers for tumor imaging. The ligands (L2, L3, L4, and L5) were synthesized by reacting palbociclib with isocyanide-containing active esters and then radiolabeling with a [99mTc(CO)3]+ core to produce radiotracers (99mTc-L2, 99mTc-L3, 99mTc-L4, and 99mTc-L5) with high radiochemical purity (>95%) and good stability in vitro. The structures of the 99mTc complexes were identified by preparation and characterization of the corresponding stable rhenium complexes. Partition coefficient results indicated that these complexes were lipophilic. A kinase inhibition assay demonstrated the high affinity of the stable Re complexes for CDK4. A cell study showed that all four complexes had substantial uptake by MCF-7 cells and could be significantly inhibited by palbociclib and nonradiolabeled ligand, indicating a CDK4/6-specific uptake mechanism. Biodistribution studies in nude mice bearing MCF-7 tumors showed that the complexes had obvious accumulation in tumors at 2 h postinjection. 99mTc-L2 exhibited the highest tumor uptake and tumor/blood ratio, whereas 99mTc-L4 showed the highest tumor/muscle ratio. The micro-SPECT/CT study showed that complex 99mTc-L4 had visible uptake at the tumor site, and the accumulation was clearly reduced in the image after pretreatment with palbociclib, further indicating CDK4/6 specificity. All the results showed that the 99mTc-labeled complexes in this work have the potential for tumor imaging.
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Affiliation(s)
- Xiaoqing Song
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China
| | - Qianqian Gan
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China
| | - Xuran Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China
| | - Junbo Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China
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Jackisch C. Overcoming endocrine resistance in neoadjuvant endocrine therapy for early breast cancer. Lancet Oncol 2019; 20:1185-1187. [PMID: 31402322 DOI: 10.1016/s1470-2045(19)30500-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Christian Jackisch
- Sana Hospital Offenbach, Department of Obsterics and Gynecology and Breast Cancer Center, Offenbach, D-63069 Germany.
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Juric D, Janku F, Rodón J, Burris HA, Mayer IA, Schuler M, Seggewiss-Bernhardt R, Gil-Martin M, Middleton MR, Baselga J, Bootle D, Demanse D, Blumenstein L, Schumacher K, Huang A, Quadt C, Rugo HS. Alpelisib Plus Fulvestrant in PIK3CA-Altered and PIK3CA-Wild-Type Estrogen Receptor-Positive Advanced Breast Cancer: A Phase 1b Clinical Trial. JAMA Oncol 2019; 5:e184475. [PMID: 30543347 DOI: 10.1001/jamaoncol.2018.4475] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Importance The phosphatidylinositol 3-kinase (PI3K) pathway is frequently activated in patients with estrogen receptor-positive (ER+), endocrine therapy-resistant breast cancers. Objective To assess the maximum tolerated dose (MTD), safety, and activity of alpelisib, an oral, PI3Kα-specific inhibitor, plus fulvestrant in patients with ER+ advanced breast cancer (ABC). Design, Setting, and Participants An open-label, single-arm, phase 1b study of alpelisib plus fulvestrant was conducted at 10 centers in 5 countries. Participants were 87 postmenopausal women with PIK3CA-altered or PIK3CA-wild-type ER+ ABC, whose cancer progressed during or after antiestrogen therapy. The study began enrolling patients October 5, 2010, and the data cutoff was March 22, 2017. Interventions Escalating doses of alpelisib were administered once daily, starting at 300 mg, plus fixed-dose fulvestrant, 500 mg, in the dose-escalation phase; alpelisib at the recommended phase 2 dose plus fulvestrant in the dose-expansion phase. Main Outcomes and Measures The primary end point was determination of the MTD of once-daily alpelisib plus fulvestrant. Secondary end points included safety and preliminary activity. Results From October 5, 2010, to March 22, 2017, 87 women (median age: 58 years [range, 37-79 years]; median of 5 prior lines of antineoplastic therapy) received escalating once-daily doses of alpelisib (300 mg, n = 9; 350 mg, n = 8; 400 mg, n = 70) plus fixed-dose fulvestrant (500 mg). During dose escalation, dose-limiting toxic effects were reported in 1 patient (alpelisib, 400 mg): diarrhea (grade 2), vomiting, fatigue, and decreased appetite (all grade 3). The MTD of alpelisib when combined with fulvestrant was 400 mg once daily, and the recommended phase 2 dose was 300 mg once daily. Overall, the most frequent grade 3/4 adverse events with alpelisib, 400 mg, once daily (≥10% of patients), regardless of causality, were hyperglycemia (19 [22%]) and maculopapular rash (11 [13%]); 9 patients permanently discontinued therapy owing to adverse events. Median progression-free survival at the MTD was 5.4 months (95% CI, 4.6-9.0 months). Median progression-free survival with alpelisib, 300 to 400 mg, once daily plus fulvestrant was longer in patients with PIK3CA-altered tumors (9.1 months; 95% CI, 6.6-14.6 months) vs wild-type tumors (4.7 months; 95% CI, 1.9-5.6 months). Overall response rate in the PIK3CA-altered group was 29% (95% CI, 17%-43%), with no objective tumor responses in the wild-type group. Conclusions and Relevance Alpelisib plus fulvestrant has a manageable safety profile in patients with ER+ ABC, and data suggest that this combination may have greater clinical activity in PIK3CA-altered vs wild-type tumors. Trial Registration ClinicalTrials.gov identifier: NCT01219699.
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Affiliation(s)
- Dejan Juric
- Massachusetts General Hospital Cancer Center, Department of Medicine, Harvard Medical School, Boston
| | - Filip Janku
- Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston
| | - Jordi Rodón
- Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston.,at the time of the study, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Howard A Burris
- Department of Oncology, Sarah Cannon Research Institute, Tennessee Oncology Professional Limited Liability Corporation, Nashville
| | - Ingrid A Mayer
- Department of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Martin Schuler
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, German Cancer Consortium, Germany
| | - Ruth Seggewiss-Bernhardt
- Comprehensive Cancer Center Mainfranken, University Hospital Würzburg, Würzburg, Germany.,Department of Hematology/Oncology, SozialStiftung Bamberg, Bamberg, Germany
| | - Marta Gil-Martin
- Department of Medical Oncology, Catalan Institute of Oncology-Bellvitge Biomedical Research Institute, Barcelona, Spain
| | - Mark R Middleton
- Department of Oncology, Churchill Hospital Cancer Centre, Oxford, United Kingdom
| | - José Baselga
- At the time of the study, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York.,Medical Oncology Department, Vall d'Hebron Institute of Oncology, Cellex Center, Barcelona, Spain
| | - Douglas Bootle
- Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
| | - David Demanse
- Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
| | - Lars Blumenstein
- Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
| | - Karl Schumacher
- Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
| | - Alan Huang
- At the time of the study, Novartis Oncology Translational Research, Novartis Institutes for BioMedical Research, Cambridge, Massachusetts.,Tango Therapeutics, Cambridge, Massachusetts
| | - Cornelia Quadt
- Translational Clinical Oncology, Novartis Pharma AG, Basel, Switzerland
| | - Hope S Rugo
- Department of Medicine, University of California at San Francisco, Helen Diller Family Comprehensive Cancer Center, San Francisco
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Di Leo A, O'Shaughnessy J, Sledge GW, Martin M, Lin Y, Frenzel M, Hardebeck MC, Smith IC, Llombart-Cussac A, Goetz MP, Johnston S. Prognostic characteristics in hormone receptor-positive advanced breast cancer and characterization of abemaciclib efficacy. NPJ Breast Cancer. 2018;4:41. [PMID: 30588487 PMCID: PMC6299082 DOI: 10.1038/s41523-018-0094-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 11/13/2018] [Indexed: 12/13/2022] Open
Abstract
CDK4 & 6 inhibitors have enhanced the effectiveness of endocrine therapy (ET) in patients with advanced breast cancer (ABC). This paper presents exploratory analyses examining patient and disease characteristics that may inform in whom and when abemaciclib should be initiated. MONARCH 2 and 3 enrolled women with HR+, HER2- ABC. In MONARCH 2, patients whose disease had progressed while receiving ET were administered fulvestrant+abemaciclib/placebo. In MONARCH 3, patients received a nonsteroidal aromatase inhibitor+abemaciclib/placebo as initial therapy for advanced disease. A combined analysis of the two studies was performed to determine significant prognostic factors. Efficacy results (PFS and ORR in patients with measurable disease) were examined for patient subgroups corresponding to each significant prognostic factor. Analysis of clinical factors confirmed the following to have prognostic value: bone-only disease, liver metastases, tumor grade, progesterone receptor status, performance status, treatment-free interval (TFI) from the end of adjuvant ET, and time from diagnosis to recurrence. Prognosis was poorer in patients with liver metastases, progesterone receptor-negative tumors, high grade tumors, or short TFI (<36 months). Benefit (PFS hazard ratio, ORR increase) from abemaciclib was observed in all patient subgroups. Patients with indicators of poor prognosis had the largest benefit from the addition of abemaciclib. However, in MONARCH 3, for patients with certain good prognostic factors (TFI ≥ 36 months, bone-only disease) ET achieved a median PFS of >20 months. These analyses identified prognostic factors and demonstrated that patients with poor prognostic factors derived the largest benefit from the addition of abemaciclib.
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Keup C, Mach P, Aktas B, Tewes M, Kolberg HC, Hauch S, Sprenger-Haussels M, Kimmig R, Kasimir-Bauer S. RNA Profiles of Circulating Tumor Cells and Extracellular Vesicles for Therapy Stratification of Metastatic Breast Cancer Patients. Clin Chem 2018; 64:1054-1062. [DOI: 10.1373/clinchem.2017.283531] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 04/27/2018] [Indexed: 12/16/2022]
Abstract
Abstract
BACKGROUND
Liquid biopsies are discussed to provide surrogate markers for therapy stratification and monitoring. We compared messenger RNA (mRNA) profiles of circulating tumor cells (CTCs) and extracellular vesicles (EVs) in patients with metastatic breast cancer (MBC) to estimate their utility in therapy management.
METHODS
Blood was collected from 35 hormone receptor-positive/HER2-negative patients with MBC at the time of disease progression and at 2 consecutive staging time points. CTCs were isolated from 5 mL of blood by positive immunomagnetic selection, and EVs from 4 mL of plasma by a membrane affinity-based procedure. mRNA was reverse transcribed, preamplified, and analyzed for 18 genes by multimarker quantitative polymerase chain reaction (qPCR) assays. RNA profiles were normalized to healthy donor controls (n = 20), and results were correlated with therapy outcome.
RESULTS
There were great differences in mRNA profiles of EVs and CTCs, with only 5% (21/403) of positive signals identical in both fractions. Transcripts involved in the PI3K signaling pathway were frequently overexpressed in CTCs, and AURKA, PARP1, and SRC signals appeared more often in EVs. Of all patients, 40% and 34% showed ERBB2 and ERBB3 signals, respectively, in CTCs, which was significantly associated with disease progression (P = 0.007). Whereas MTOR signals in CTCs significantly correlated with response (P = 0.046), signals in EVs indicated therapy failure (P = 0.011). The presence of AURKA signals in EVs seemed to be a marker for the indication of unsuccessful treatment of bone metastasis.
CONCLUSIONS
These results emphasize the potential of CTCs and EVs for therapy monitoring and the need for critical evaluation of the implementation of any liquid biopsy in clinical practice.
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Affiliation(s)
- Corinna Keup
- Department of Gynecology and Obstetrics, University Hospital of Essen, Germany
| | - Pawel Mach
- Department of Gynecology and Obstetrics, University Hospital of Essen, Germany
| | - Bahriye Aktas
- Department of Gynecology and Obstetrics, University Hospital of Essen, Germany
- Department of Gynecology, University Hospital of Leipzig, Germany
| | - Mitra Tewes
- Department of Internal Medicine (Cancer Research), University Hospital of Essen, Germany
| | | | | | | | - Rainer Kimmig
- Department of Gynecology and Obstetrics, University Hospital of Essen, Germany
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Steenbruggen TG, van Ramshorst MS, Kok M, Linn SC, Smorenburg CH, Sonke GS. Neoadjuvant Therapy for Breast Cancer: Established Concepts and Emerging Strategies. Drugs 2018; 77:1313-1336. [PMID: 28616845 DOI: 10.1007/s40265-017-0774-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In the last decade, the systemic treatment approach for patients with early breast cancer has partly shifted from adjuvant treatment to neoadjuvant treatment. Systemic treatment administration started as a 'one size fits all' approach but is currently customized according to each breast cancer subtype. Systemic treatment in a neoadjuvant setting is at least as effective as in an adjuvant setting and has several additional advantages. First, it enables response monitoring and provides prognostic information; second, it downstages the tumor, allowing for less extensive surgery, improved cosmetic outcomes, and reduced postoperative complications such as lymphedema; and third, it enables early development of new treatment strategies by using pathological complete remission as a surrogate outcome of event-free and overall survival. In this review we give an overview of the current standard of neoadjuvant systemic treatment strategies for the three main subtypes of breast cancer: hormone receptor-positive, triple-negative, and human epidermal growth factor receptor 2-positive. Additionally, we summarize drugs that are under investigation for use in the neoadjuvant setting.
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Affiliation(s)
- Tessa G Steenbruggen
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Mette S van Ramshorst
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Marleen Kok
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Sabine C Linn
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Carolien H Smorenburg
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Gabe S Sonke
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands.
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Giannone G, Milani A, Ghisoni E, Genta S, Mittica G, Montemurro F, Valabrega G. Oral etoposide in heavily pre-treated metastatic breast cancer: A retrospective series. Breast 2018; 38:160-4. [DOI: 10.1016/j.breast.2018.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/20/2017] [Accepted: 01/24/2018] [Indexed: 01/13/2023] Open
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Montor WR, Salas AROSE, Melo FHMD. Receptor tyrosine kinases and downstream pathways as druggable targets for cancer treatment: the current arsenal of inhibitors. Mol Cancer 2018; 17:55. [PMID: 29455659 PMCID: PMC5817866 DOI: 10.1186/s12943-018-0792-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/01/2018] [Indexed: 12/23/2022] Open
Abstract
Searching for targets that allow pharmacological inhibition of cell proliferation in over-proliferative states, such as cancer, leads us to finely understand the complex mechanisms orchestrating the perfect control of mitosis number, frequency and pace as well as the molecular arrangements that induce cells to enter functional quiescence and brings them back to cycling in specific conditions. Although the mechanisms regulating cell proliferation have been described several years ago, never before has so much light been shed over this machinery as during the last decade when therapy targets have been explored and molecules, either synthetic or in the form of antibodies with the potential of becoming cancer drugs were produced and adjusted for specific binding and function. Proteins containing tyrosine kinase domains, either membrane receptors or cytoplasmic molecules, plus the ones activated by those in downstream pathways, having tyrosine kinase domains or not, such as RAS which is a GTPase and serine/threonine kinases such as RAF, play crucial role in conducting proliferation information from cell surroundings to the nucleus where gene expression takes place. Tyrosine kinases phosphorylate tyrosine residues in an activating mode and are found in important growth factor receptors, such as for ligands from families collectively known as VEGF, PDGF and EGF, to name a few and in intracellular downstream molecules. They all play important roles in normal physiology and are commonly found mutated or overexpressed in neoplastic states. Our objective here is to present such kinases as druggable targets for cancer therapy, highlighting the ones for which the pharmacological arsenal is available, discussing specificity, resistance mechanisms and treatment alternatives in cases of resistance, plus listing potential targets that have not been successfully worked yet.
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Affiliation(s)
- Wagner Ricardo Montor
- Departamento de Ciências Fisiológicas, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil
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Hirata Y, Sasaki T, Kanki H, Choong CJ, Nishiyama K, Kubo G, Hotei A, Taniguchi M, Mochizuki H, Uesato S. New 5-Aryl-Substituted 2-Aminobenzamide-Type HDAC Inhibitors with a Diketopiperazine Group and Their Ameliorating Effects on Ischemia-Induced Neuronal Cell Death. Sci Rep 2018; 8:1400. [PMID: 29362442 PMCID: PMC5780423 DOI: 10.1038/s41598-018-19664-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 01/05/2018] [Indexed: 01/05/2023] Open
Abstract
We previously synthesized new 5-thienyl-substituted 2-aminobenzamide-type HDAC1, 2 inhibitors with the (4-ethyl-2,3-dioxopiperazine-1-carboxamido) methyl group. K-560 (1a) protected against neuronal cell death in a Parkinson’s disease model by up-regulating the expression of XIAP. This finding prompted us to design new K-560-related compounds. We examined the structure activity relationship (SAR) for the neuronal protective effects of newly synthesized and known K-560 derivatives after cerebral ischemia. Among them, K-856 (8), containing the (4-methyl-2,5-dioxopiperazin-1-yl) methyl group, exhibited a promising neuronal survival activity. The SAR study strongly suggested that the attachment of a monocyclic 2,3- or 2,5-diketopiperazine group to the 2-amino-5-aryl (but not 2-nitro-5-aryl) scaffold is necessary for K-560-related compounds to exert a potent neuroprotective effect.
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Affiliation(s)
- Yoshiyuki Hirata
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan.,Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan.
| | - Hideaki Kanki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Chi-Jing Choong
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Kumiko Nishiyama
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Genki Kubo
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan
| | - Ayana Hotei
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan
| | - Masahiko Taniguchi
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shinichi Uesato
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, 564-8680, Japan. .,Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan.
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