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Hatakawa Y, Nakamura R, Akizawa T, Konishi M, Matsuda A, Oe T, Saito M, Ito F. SKGQA, a Peptide Derived from the ANA/BTG3 Protein, Cleaves Amyloid-β with Proteolytic Activity. Biomolecules 2024; 14:586. [PMID: 38785993 PMCID: PMC11118129 DOI: 10.3390/biom14050586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/02/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Despite the extensive research conducted on Alzheimer's disease (AD) over the years, no effective drug for AD treatment has been found. Therefore, the development of new drugs for the treatment of AD is of the utmost importance. We recently reported the proteolytic activities of JAL-TA9 (YKGSGFRMI) and ANA-TA9 (SKGQAYRMA), synthetic peptides of nine amino acids each, derived from the Box A region of Tob1 and ANA/BTG3 proteins, respectively. Furthermore, two components of ANA-TA9, ANA-YA4 (YRMI) at the C-terminus end and ANA-SA5 (SKGQA) at the N-terminus end of ANA-TA9, exhibited proteolytic activity against amyloid-β (Aβ) fragment peptides. In this study, we identified the active center of ANA-SA5 using AEBSF, a serine protease inhibitor, and a peptide in which the Ser residue of ANA-SA5 was replaced with Leu. In addition, we demonstrate the proteolytic activity of ANA-SA5 against the soluble form Aβ42 (a-Aβ42) and solid insoluble form s-Aβ42. Furthermore, ANA-SA5 was not cytotoxic to A549 cells. These results indicate that ANA-SA5 is a promising Catalytide and a potential candidate for the development of new peptide drugs targeting Aβ42 for AD treatment.
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Affiliation(s)
- Yusuke Hatakawa
- Department of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Miyagi, Japan; (Y.H.); (T.O.)
| | - Rina Nakamura
- O-Force Co., Ltd., 3454 Irino Kuroshio-cho, Hata-gun 789-1931, Kochi, Japan or (R.N.); or (T.A.)
- Department of Pharmacology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku 783-8505, Kochi, Japan;
| | - Toshifumi Akizawa
- O-Force Co., Ltd., 3454 Irino Kuroshio-cho, Hata-gun 789-1931, Kochi, Japan or (R.N.); or (T.A.)
- Department of Pharmacology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku 783-8505, Kochi, Japan;
| | - Motomi Konishi
- Department of Integrative Pharmacy, Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata 573-0101, Osaka, Japan;
| | - Akira Matsuda
- Laboratory of Medicinal and Biochemical Analysis, Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshinkai, Kure 737-0112, Hiroshima, Japan;
| | - Tomoyuki Oe
- Department of Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Miyagi, Japan; (Y.H.); (T.O.)
| | - Motoaki Saito
- Department of Pharmacology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku 783-8505, Kochi, Japan;
| | - Fumiaki Ito
- O-Force Co., Ltd., 3454 Irino Kuroshio-cho, Hata-gun 789-1931, Kochi, Japan or (R.N.); or (T.A.)
- The Institute of Prophylactic Pharmacology, 1-58, Rinku-oraikita, Izumisano 598-8531, Osaka, Japan
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Tanaka A, Kiriyama A, Sano A, Changung C, Katsumi H, Yamamoto A, Furubayashi T. Left-Right Difference in Brain Pharmacokinetics Following Nasal Administration Via One-Site Nostrils. J Pharm Sci 2024:S0022-3549(24)00174-6. [PMID: 38734208 DOI: 10.1016/j.xphs.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024]
Abstract
The olfactory and trigeminal pathways are direct delivery pathways between the nose and brain. To determine the effect of direct delivery on drug distribution in the brain, two model drugs with different physical properties, antipyrine (ANP), with high membrane permeability, and ranitidine (RNT), with low membrane permeability, were selected. For ANP, direct delivery from the nose to the brain was observed only in the olfactory bulb beside the nasal cavity, with a direct transport percentage (DTP) of approximately 45 %, whereas in the frontal and occipital brains, the contribution from the systemic circulation to the brain was observed as the primary route of brain distribution. No significant variations were observed in the pharmacokinetics of ANP in the left and right brain, whereas RNT was distributed in all brain regions with a DTP of > 95 %. The closer the brain region is to the nasal cavity, the higher the DTP. Furthermore, the left brain, the same nostril site (left nostril) of administration, had a larger level of drug delivery than the right brain. These findings imply that the influence of the administered nostril site differs based on the physicochemical properties and amount of the drug.
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Affiliation(s)
- Akiko Tanaka
- Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University, Motoyamakita-machi 4-19-1, Higashinada, Kobe 658-8558, Japan.
| | - Akiko Kiriyama
- Department of Pharmacokinetics, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kodo, Kyotanabe, Kyoto 610-0395, Japan
| | - Ayaka Sano
- Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University, Motoyamakita-machi 4-19-1, Higashinada, Kobe 658-8558, Japan
| | - Cho Changung
- Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University, Motoyamakita-machi 4-19-1, Higashinada, Kobe 658-8558, Japan
| | - Hidemasa Katsumi
- Department of Biopharmaceutics, Kyoto Pharmaceutical University, Yamashina, Kyoto 607-8414, Japan
| | - Akira Yamamoto
- Department of Biopharmaceutics, Kyoto Pharmaceutical University, Yamashina, Kyoto 607-8414, Japan
| | - Tomoyuki Furubayashi
- Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University, Motoyamakita-machi 4-19-1, Higashinada, Kobe 658-8558, Japan
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Zhao Z, Zhang Z, Zhang H, Liang Z. Small Peptides in the Detection of Mycotoxins and Their Potential Applications in Mycotoxin Removal. Toxins (Basel) 2022; 14:toxins14110795. [PMID: 36422969 PMCID: PMC9698726 DOI: 10.3390/toxins14110795] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 10/29/2022] [Accepted: 11/08/2022] [Indexed: 11/19/2022] Open
Abstract
Mycotoxins pose significant risks to humans and livestock. In addition, contaminated food- and feedstuffs can only be discarded, leading to increased economic losses and potential ecological pollution. Mycotoxin removal and real-time toxin level monitoring are effective approaches to solve this problem. As a hot research hotspot, small peptides derived from phage display peptide libraries, combinatorial peptide libraries, and rational design approaches can act as coating antigens, competitive antigens, and anti-immune complexes in immunoassays for the detection of mycotoxins. Furthermore, as a potential approach to mycotoxin degradation, small peptides can mimic the natural enzyme catalytic site to construct artificial enzymes containing oxidoreductases, hydrolase, and lyase activities. In summary, with the advantages of mature synthesis protocols, diverse structures, and excellent biocompatibility, also sharing their chemical structure with natural proteins, small peptides are widely used for mycotoxin detection and artificial enzyme construction, which have promising applications in mycotoxin degradation. This paper mainly reviews the advances of small peptides in the detection of mycotoxins, the construction of peptide-based artificial enzymes, and their potential applications in mycotoxin control.
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Affiliation(s)
- Zitong Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhenzhen Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Haoxiang Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhihong Liang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- The Supervision, Inspection and Testing Center of Genetically Modified Organisms, Ministry of Agriculture, Beijing 100083, China
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Correspondence: ; Tel.: +86-010-62737055
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Kumar M, Dogra R, Mandal UK. Nanomaterial-based delivery of vaccine through nasal route: Opportunities, challenges, advantages, and limitations. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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