Drug discovery in Japan : investigating the sources of innovation

書誌事項

Drug discovery in Japan : investigating the sources of innovation

Sadao Nagaoka, editor

Springer, 2019

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注記

Includes bibliographical references and index

内容説明・目次

内容説明

This book analyzes the drug-discovery process in Japan, based on detailed case studies of 12 groups of 15 innovative drugs. It covers the first statin in the world up to the recent major breakthrough in cancer therapy, the recent immune checkpoint inhibitor, the scientific discovery for which a 2018 Nobel Prize in Physiology or Medicine was awarded to Prof. Tasuku Honjo, Kyoto University. The book shows the pervasive high uncertainty in drug discovery: frequent occurrences of unexpected difficulties, discontinuations, serendipities, and good luck, significantly because drug discovery starts when the underlying science is incomplete. Thus, there exist dynamic interactions between scientific progress and drug discovery. High uncertainty also makes the value of an entrepreneurial scientist high. Such scientists fill the knowledge gaps by absorbing external scientific progress and by relentless pursuit of possibilities through their own research, often including unauthorized research, to overcome crises. Further, high uncertainty and its resolution significantly characterize the evolution of competition in the drug industry. The patent system promotes innovation under high uncertainty not only by enhancing appropriability of R&D investment but also by facilitating the combination of knowledge and capabilities among different firms through disclosure. Understanding such a process significantly benefits the creation of innovation management and policy practices.

目次

Foreword Acknowledgement Chapter 1: Introduction 1.1 Objectives 1.2 Drugs discussed in the case studies References Chapter 2: Compactin The discovery of statin, "penicillin" for cholesterol Abstract 2.1 Introduction 2.2 Timeline of the discovery and development of compactin 2.3 Statin discovery program 2.4 Novelty of the Endo's discovery program 2.5 Collaboration with academia Box 2.1 Academic-industrial collaboration to understand the mechanism of action of statin 2.6 Crises and discontinuations 2.6.1 First crisis: failure in rats 2.6.2 Second crisis: suspected hepatotoxicity 2.6.3 Third crisis: discontinuation of clinical development 2.7 Science sources that supported the discovery of compactin 2.8 Responses to discontinuation of the clinical trial 2.9 "Invisible" discovery competition 2.10 Compactin is the basis for all statins 2.11 Statin sales 2.12 Conclusion References Chapter 3: Pravastatin (Pravachol, Mevalotin) "Blockbuster" statin discovered from the metabolites of compactin Abstract 3.1 Introduction 3.2 Characteristics of pravastatin 3.3 Timeline of R&D for pravastatin 3.4 Discovery of pravastatin: from the metabolites of compactin 3.5 Pre-clinical studies using WHHL rabbits 3.6 Development of a two-step fermentation production process 3.7 Five yeas from initiating clinical trials to the approval for human use 3.10 Global large-scale and long-term clinical studies 3.12 Clinical development through collaboration between industry and academia 3.11 Toward a blockbuster drug 3.12 Partnership with Bristol-Myers Squibb Box 3.1 Statin development competition: Sankyo vs Merck 3.13 Conclusion References Chapter 4: Rosuvastatin(Crestor) "Super statin" which became a global block buster despite its late entry Abstract 4.1 Introduction 4.2 Timeline of rosuvastatin synthesis and development 4.3 Discontinuation of the Clinical Trial by Shionogi 4.4 AstraZeneca resumed clinical trials 4.5 Sources of discovery: fluvastatin as the lead compound 4.6 Crestor sales: Peak sales exceed 7.1 billion USD 4.7 Rosuvastatin vs atorvastatin 4.8 Properties of commercially available statins 4.9 Economic value of follow-on innovation Box 4.1 Contribution of follow-on drugs to innovation 4.10 AstraZeneca's resumption of the suspended project 4.11 Conclusion References Chapter 5: Leuprorelin (Leuplin, Lupron, Viadur) A prostate cancer drug with dual innovations in mechanism of action and drug delivery system Abstract 5.1 Introduction 5.2 R&D timeline of Leuplin 5.3 Leuprorelin mechanism of action 5.4 Academia provides the "seed" 5.5 Challenges and luck in the synthesis of derivatives 5.6 The start of microencapsulation 5.7 Discovery of downregulation and a change in the target disease 5.8 Commercialization challenges 5.9 Scientific theory behind Leuplin: Application of Nobel Prize-winning compounds 5.10 DDS: Optimizing drug therapy 5.11 Scientific foundation of Takeda Pharmaceutical 5.12 Scientific contributions to Leuplin R&D 5.13 Market success of Leuplin 5.14 R&D competition 5.15 Competition after the launch 5.16 Conclusion References Chapter 6: Oflaxacin and levofloxacin (Tarivid/Cravit) Best-in class antimicrobial agents Abstract 6.1 Introduction 6.2 Mechanism of action of fluoroquinolones 6.3 Ofloxacin R&D 6.4 Efficient mass production of ofloxacin 6.5 Ofloxacin clinical research 6.6 Levofloxacin R&D process 6.7 Increased competition for ofloxacin and the discovery of levofloxacin 6.8 Development of the mass production process of levofloxacin 6.9 Levofloxacin clinical development Box 6.1 Optical activity and drug discovery 6.10 Technological advances since sulfa-based antimicrobials 6.11 Ofloxacin and levofloxacin R&D team 6.12 Scientific contributions to the development of ofloxacin and levofloxacin 6.13 Sales of levofloxacin: approximately 300 billion yen at peak 6.14 Fluoroquinolone development competition 6.15 Levofloxacin gains half the fluoroquinolone market share 6.16 Conclusion References Chapter 7: Tamsulosin (Harnal, Flomax, OMNIC) Breakthrough drug that drastically changed the treatment of prostatic hyperplasia Abstract 7.1 Introduction 7.2 Tamsulosin R&D timeline 7.3 Development history of tamsulosin 7.5 Basic Research: Amosulalol R&D and the creation of tamsulosin 7.6 Application to prostatic hyperplasia 7.7 Clinical trial program: Overcoming side effects with extended-release formulations 7.8 Scientific contributions to the development of tamsulosin 7.9 Yamanouchi's R&D structure 7.10 Scientific contributions to tamsulosin's basic research 7.11 Scientific contributions to tamsulosin's clinical research 7.12 Sales of tamsulosin 7.13 Competition with other companies: First 1-blocker to treat prostate hypertrophy 7.14 Conclusion References Chapter 8: Pranlukast (Onon) An anti-asthmatic drug realized by intensive investment in the arachidonic acid cascade Abstract 8.1 Introduction 8.2 Timeline from discovery to launch 8.3 Prostaglandins (PGs) and the arachidonic acid cascade 8.4 History of prostaglandin research 8.5 Discovery and development of PG drugs by Ono Pharmaceutical 8.6 Discovery of leukotrienes 8.7 Ono Pharmaceutical started development of LT antagonists 8.8 Technology transfer from Corey's laboratory and clinical development challenges 8.9 Concentrating on PG research 8.10 High efficacy for bronchial asthma 8.11 Onon earned one-quarter of Ono Pharmaceutical's sales 8.12 LT antagonist development competition 8.13 Exploring global expansion 8.14 Conclusion References Chapter 9: Tacrolimus (Prograf) An immunosuppressant of global standards Abstract 9.1 Introduction 9.2 Transplant immunology 9.3 Timeline of tacrolimus development 9.4 The history of organ transplantation is the history of immunosuppression 9.5 Natural products drug discovery in Fujisawa Pharmaceutical 9.6 Discovery research started at the newly established research laboratory 9.7 Scientific contributions to exploratory research 9.8 The world authority in liver transplantation led clinical trials 9.9 Tacrolimus is more effective than cyclosporine 9.10 Contributing to the creation of chemical biology 9.11 Annual sales exceed 2 billion dollars 9.12 R&D competition and the first-mover advantage 9.13 Conclusion References Chapter 10: Pioglitazone (Actos, Glustin) A drug that transformed diabetes therapy Abstract 10.1 Introduction 10.2 Pioglitazone mechanism of action 10.3 Timeline of the development of pioglitazone 10.4 Discovery of lead compounds through animal models 10.5 Balancing potency and side effects 10.6 Clinical development 10.7 Diabetes treatment before pioglitazone 10.8 Insulin mechanism of action 10.9 Scientific basis for research and development 10.10 Market success 10.11 World's largest market share of insulin sensitizers 10.12 Conclusion References Chapter 11: Donepezil (Aricept) The world's first drug for Alzheimer's disease 236 Abstract 11.1 Introduction 11.2 Mechanism of action of donepezil 11.3 Timeline of donepezil R&D 11.4 Science basis for R&D 11.5 Exploratory research of tacrine derivatives 11.6 Lead compound derivation and project discontinuation 11.7 "Yami Research," project restart, and derivation of donepezil 11.8 Clinical trials 11.9 Science basis of donepezil: The acetylcholine hypothesis 11.10 Development of tacrine based on the choline hypothesis 11.11 Donepezil R&D team members 11.12 Interactions between science and donepezil 11.13 Sales of Aricept: Over 300 billion yen sold worldwide annually 11.14 Entries and Failures of Other Companies in R&D of Anti-Alzheimer Drugs 11.15 Competition in the anti-Alzheimer's drug market Box 11.1 Innovations in diagnosing Alzheimer's disease by Magnetic Resonance Imaging 11.16 Conclusion References Chapter 12: Candesartan (Blopress, Atacand) Antihypertensive drug with a new mechanism of action Abstract 12.1 Introduction 12.2 Mechanism of action 12.3 Timeline of the candesartan R&D process 12.4 Start as diuretic research 12.5 A new synthesis method and serendipitous findings 12.6 Drug lacked efficacy in the clinical trial 12.7 The discovery of losartan 12.8 Resumption of Takeda's ARB research and the discovery of candesartan 12.9 The Scientific basis of candesartan 12.10 Drug development era 12.11 Contributions of scientific knowledge 12.12 Impact of candesartan 12.13 Global competition for ARB R&D 12.14 Over $20 billion markets worldwide 12.15 Conclusion References Chapter 13: Tocilizumab (Actemra,Ro-actemra) First antibody drug developed in Japan 283 Abstract 13.1 Introduction 13.2 Time line of the R&D process of tocilizumab 13.3 The mechanism of action: Inhibition of IL-6 signaling 13.4 Scientific basis for exploratory research Box 13.1 The discovery of IL-6. 13.5 Joint research with Osaka University 13.6 Humanized antibodies 13.7 Efficacy and safety of tocilizumab were confirmed. 13.8 Mass production of tocilizumab 13.9 Tocilizumab for multiple myeloma 13.10 Return to autoimmune diseases as the disease target 13.11 Drug prices determined by the cost calculation method 13.12 Scientific sources of tocilizumab 13.13 Tocilizumab development through successful academic-industrial alliances Box 13.2 Contribution of drug discovery to science: The role of IL-6 revealed by tocilizumab. 13.14 Tocilizumab sales - exceeded two billion USD 13.15 Competition among antibody drugs 13.16 Comparison with R&D process of Remicade (infliximab) 13.17 Conclusion References Chapter 14: Nivolumab (Opdivo) Science-based antibody drug, which opened a new category of cancer treatments Abstract 14.1 Introduction 14.2 Overview of nivolumab R&D 14.3 Mechanisms of action and characteristics of nivolumab 14.4 Timeline from the start of basic research to the market launch 14.5 Background to discovery research 14.6 Discovery and isolation of PD-1 and generation of PD-1 knockout mice 14.7 International collaboration to discover the ligands of PD-1 14.8 Pursuing the applicability of anti-PD-1 antibodies as cancer therapeutic agents 14.9 Application for method-of-use patents and creation of nivolumab through collaboration with Medarex 14.10 Conducting Phase I clinical studies 14.11 Late-stage clinical studies and approval 14.12 Scientific basis for the discovery of nivolumab 14.13 Use of public research grants, KAKEN, and other grants 14.14 Sales of Opdivo 14.15 Major immune checkpoint inhibitors and combination therapy Box 14.1 Exploiting frontier science for drug development: a comparison with ipilimumab (Yervoy) nivolumab 14.15 Conclusion References Chapter 15: Sources of innovation of drug discovery in Japan and its implications Abstract A. Knowledge sources 15.1 Knowledge sources inspiring discovery projects 15.2 Transfer of knowledge through direct collaboration among researchers 15.3 Research tools and the discovery of the new use of a compound 15.4 Survey evidence on knowledge sources for drug inventions B. Dynamic relationship between drug discovery and scientific progress 15.5 Status of science when the discovery research begins 15.6 Survey evidence on incomplete science when drug discovery begins 15.7 Dynamic relationship between drug discovery and scientific progress C. Coping with uncertainty 15.8 Unexpected difficulties 15.9 Overcoming unexpected difficulties 15.10 Capturing serendipity and unexpected luck D. Uniqueness and competition in discovery research 15.11 Uniqueness of discovery research 15.12 Emergence of within-mechanism competition and knowledge spillover E. Implications on management and policy 15.13 Absorptive capability and incomplete science 15.14 Encouraging Individual initiative and long-term perspective 15.15 Global clinical development capabilities 15.16 Patent system that encouraged challenges to uncertainty 15.17 Science and R&D infrastructure in Japan 15.18 Regulations that facilitate drug innovations References

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詳細情報

  • NII書誌ID(NCID)
    BB29628495
  • ISBN
    • 9789811389054
  • 出版国コード
    si
  • タイトル言語コード
    eng
  • 本文言語コード
    eng
  • 出版地
    Singapore
  • ページ数/冊数
    xv, 333 p.
  • 大きさ
    24 cm
  • 分類
  • 件名
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