MASUI Sho

写真a

Affiliation

Faculty of Pharmacy, Department of Pharmacy Division of Integrative Clinical Pharmacology (Shiba-Kyoritsu)

Position

Research Associate/Assistant Professor/Instructor
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Academic Degrees 【 Display / hide 】

  • 博士（薬学）, Kyoto University, Coursework, 2023.03

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Licenses and Qualifications 【 Display / hide 】

  • 薬剤師, 2019.04

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Papers 【 Display / hide 】

  • Low serum concentrations of bevacizumab and nivolumab owing to excessive urinary loss in patients with proteinuria: a case series.

    Masuda T, Funakoshi T, Horimatsu T, Yamamoto S, Matsubara T, Masui S, Nakagawa S, Ikemi Y, Yanagita M, Muto M, Terada T, Yonezawa A

    Cancer chemotherapy and pharmacology 94 ( 4 ) 615 - 622 2024.03

    ISSN  0344-5704

  • Comparison of safety and effectiveness between etanercept biosimilar LBEC0101 and reference in patients with rheumatoid arthritis in real-world data using the KURAMA cohort.

    Kawakami T, Masui S, Onishi A, Onizawa H, Fujii T, Murakami K, Murata K, Tanaka M, Shimada T, Nakagawa S, Matsuda S, Morinobu A, Terada T, Yonezawa A

    Modern rheumatology 34 ( 6 ) 1135 - 1141 2024.03

    ISSN  1439-7595

  • Clinical characteristics of cryopyrin-associated periodic syndrome and long-term real-world efficacy and tolerability of canakinumab in Japan: results of a nationwide survey

    Takayuki Miyamoto, Kazushi Izawa, Sho Masui, Atsue Yamazaki, Yuichi Yamasaki, Tadashi Matsubayashi, Mayuka Shiraki, Hidenori Ohnishi, Junko Yasumura, Kawabe Tomohiro, Takako Miyamae, Tomoyo Matsubara, Naoya Arakawa, Takashi Ishige, Takumi Takizawa, Asami Shimbo, Masaki Shimizu, Naoki Kimura, Yuichi Maeda, Yuta Maruyama, Tomonari Shigemura, Junichi Furuta, Satoshi Sato, Hiroshi Tanaka, Miharu Izumikawa, Masahiro Yamamura, Toshio Hasegawa, Hiroshi Kaneko, Yasuo Nakagishi, Naoko Nakano, Yasunori Iida, Tamaki Nakamura, Hiroyuki Wakiguchi, Takayuki Hoshina, Toshinao Kawai, Kosaku Murakami, Shuji Akizuki, Akio Morinobu, Koichiro Ohmura, Katsuhide Eguchi, Motoshi Sonoda, Masataka Ishimura, Kenji Furuno, Momoko Kashiwado, Masaaki Mori, Kimito Kawahata, Koremasa Hayama, Kumiko Shimoyama, Natsuko Sasaki, Taisuke Ito, Hiroaki Umebayashi, Tae Omori, Seiko Nakamichi, Tomotsune Dohmoto, Yasuyuki Hasegawa, Hisashi Kawashima, Shojiro Watanabe, Yuichiro Taguchi, Haruna Nakaseko, Naomi Iwata, Hiroki Kohno, Taiki Ando, Yasuhiko Ito, Yuko Kataoka, Takako Saeki, Utako Kaneko, Ayako Murase, Seira Hattori, Tomo Nozawa, Kenichi Nishimura, Reiji Nakano, Misa Watanabe, Masato Yashiro, Tomonori Nakamura, Toshihiko Komai, Kentaro Kato, Yoshitaka Honda, Eitaro Hiejima, Atsushi Yonezawa, Kazuhisa Bessho, Satoshi Okada, Osamu Ohara, Junko Takita, Takahiro Yasumi, Ryuta Nishikomori; Japan CAPS working group

    Arthritis Rheumatol  2024.01

    Research paper (scientific journal), Joint Work, Accepted

  • Serum Concentrations of Infliximab and IL-6 for Predicting One-Year Discontinuation of Infliximab Treatment Owing to Secondary Non-response in Patients with Rheumatoid Arthritis.

    Masui S, Yonezawa A, Nakamura M, Onishi A, Hashimoto M, Onizawa H, Fujii T, Murakami K, Murata K, Tanaka M, Yokoyama K, Iwamoto N, Shimada T, Itohara K, Hira D, Nakagawa S, Imai S, Nakagawa T, Hayakari M, Matsuda S, Morinobu A, Terada T, Matsubara K

    Biological & pharmaceutical bulletin (Biological and Pharmaceutical Bulletin)  46 ( 8 ) 1112 - 1119 2023

    Research paper (scientific journal), Joint Work, Lead author, Accepted,  ISSN  0918-6158

    　View Summary

    Secondary non-response to infliximab (IFX) occurs in some patients with rheumatoid arthritis (RA). Although therapeutic drug monitoring (TDM) is a useful tool to optimize IFX therapy, it is unclear whether it can help to identify the risk of secondary non-response. This study aimed to explore the utility of serum levels of IFX or other biomarkers to predict IFX discontinuation owing to secondary non-response. A single-center, retrospective study was conducted using the Kyoto University Rheumatoid Arthritis Management Alliance cohort database between 2011 and 2020. Serum IFX levels were measured using liquid chromatography-tandem mass spectrometry. An electrochemiluminescence assay was used to quantify serum levels of tumor necrosis factor-α and interleukin-6 and detect anti-drug antibodies. Eighty-four out of 310 patients were eligible for this study. The cutoff levels of biomarkers were determined by receiver operating characteristic analysis. IFX persistence was similar between groups stratified using IFX levels, tumor necrosis factor-α levels, interleukin-6 levels, and anti-drug antibodies positivity. The group with lower IFX and higher interleukin-6 levels had the worst therapy persistence (p=0.017) and the most frequent disease worsening (90.0%, p<0.001). Evaluating both interleukin-6 and IFX levels, not just IFX alone, enabled us to identify patients at risk of discontinuing IFX treatment. These findings support the utility of measuring IFX and interleukin-6 levels for successful maintenance therapy for RA.

  • N-terminus of Etanercept is Proteolytically Processed by Dipeptidyl Peptidase-4.

    Masui S, Yonezawa A, Yokoyama K, Iwamoto N, Shimada T, Onishi A, Onizawa H, Fujii T, Murakami K, Murata K, Tanaka M, Nakagawa S, Hira D, Itohara K, Imai S, Nakagawa T, Hayakari M, Matsuda S, Morinobu A, Terada T, Matsubara K

    Pharmaceutical research (Pharmaceutical Research)  39 ( 10 ) 2541 - 2554 2022.10

    Research paper (scientific journal), Joint Work, Lead author, Accepted,  ISSN  0724-8741

    　View Summary

    Purpose: Biologics are structurally heterogeneous and can undergo biotransformation in the body. Etanercept (ETN) is a fusion protein composed of a soluble tumor necrosis factor (TNF) receptor and the Fc portion of human immunoglobulin G1. The N-terminus of ETN has a putative sequence cleaved by dipeptidyl peptidase-4 (DPP-4). The purpose of this study was to investigate the biotransformation of ETN in humans and mice and evaluate its effects on functional properties. Methods: An analytical method using liquid chromatography-mass spectrometry (LC–MS/MS) was established. The N-terminal heterogeneity of ETN was assessed in the serum of patients with rheumatoid arthritis or mice receiving ETN. The in vitro N-terminal truncation was explored using recombinant DPP-4. The binding affinity to TNF-α or TNF-β was investigated using an in-house enzyme-linked immunosorbent assay. Results: In the formulations, about 90% of ETN had an intact N-terminus, while the N-terminal truncated form was most abundant in the serum of the patients with rheumatoid arthritis and mice. Recombinant human DPP-4 cleaved two amino acids from the N-terminus of ETN in vitro. Sitagliptin, a DPP-4 inhibitor, inhibited N-terminal truncation both in vivo and in vitro. However, N-terminal truncation did not affect the binding ability to TNF-α or TNF-β and the pharmacokinetics of ETN. ETN biosimilars exhibited similar characteristics to the reference product in vivo and in vitro. Conclusions: ETN undergoes N-terminal truncation in the body, and DPP-4 cleaves exogenous ETN via N-terminal proteolysis. The application of an MS-based assay will detect novel biotransformation of therapeutic proteins.

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Presentations 【 Display / hide 】

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • Exploring the effect of Biotransformation on the Infliximab PK/PD profile

    2024.04
    -
    2027.03

    若手研究, Principal investigator

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Awards 【 Display / hide 】

  • 2024年度 Postdoctoral Award

    2024.06, 一般社団法人 日本医療薬学会, リアルワールドデータ解析に基づく抗TNF-α抗体医薬品の適正使用に関する研究

    Type of Award： Award from Japanese society, conference, symposium, etc.

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Courses Taught 【 Display / hide 】

  • STUDY OF MAJOR FIELD(INTEGRATIVE CLINICAL PHARMACOLOGY)

    2025

  • SEMINAR(INTEGRATIVE CLINICAL PHARMACOLOGY)

    2025

  • RESEARCH FOR BACHELOR'S THESIS 1

    2025

  • PRE-CLINICAL TRAINING FOR HOSPITAL & COMMUNITY PHARMACY

    2025

  • PHARMACEUTICAL-ENGLISH SEMINAR

    2025

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Memberships in Academic Societies 【 Display / hide 】

  • 日本抗体学会, 

    2022.10
    -
    Present

  • 日本臨床疫学会, 

    2019.09
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    Present

  • 日本薬学会, 

    2018.09
    -
    Present

  • 日本医療薬学会, 

    2017.06
    -
    Present
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