1
|
Miyagawa S, Kawamura T, Ito E, Takeda M, Iseoka H, Yokoyama J, Harada A, Mochizuki-Oda N, Imanishi-Ochi Y, Li J, Sasai M, Kitaoka F, Nomura M, Amano N, Takahashi T, Dohi H, Morii E, Sawa Y. Pre-clinical evaluation of the efficacy and safety of human induced pluripotent stem cell-derived cardiomyocyte patch. Stem Cell Res Ther 2024; 15:73. [PMID: 38475911 DOI: 10.1186/s13287-024-03690-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Cell- or tissue-based regenerative therapy is an attractive approach to treat heart failure. A tissue patch that can safely and effectively repair damaged heart muscle would greatly improve outcomes for patients with heart failure. In this study, we conducted a preclinical proof-of-concept analysis of the efficacy and safety of clinical-grade human induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) patches. METHODS A clinical-grade hiPSC line was established using peripheral blood mononuclear cells from a healthy volunteer that was homozygous for human leukocyte antigens. The hiPSCs were differentiated into cardiomyocytes. The obtained hiPSC-CMs were cultured on temperature-responsive culture dishes for patch fabrication. The cellular characteristics, safety, and efficacy of hiPSCs, hiPSC-CMs, and hiPSC-CM patches were analyzed. RESULTS The hiPSC-CMs expressed cardiomyocyte-specific genes and proteins, and electrophysiological analyses revealed that hiPSC-CMs exhibit similar properties to human primary myocardial cells. In vitro and in vivo safety studies indicated that tumorigenic cells were absent. Moreover, whole-genome and exome sequencing revealed no genomic mutations. General toxicity tests also showed no adverse events posttransplantation. A porcine model of myocardial infarction demonstrated significantly improved cardiac function and angiogenesis in response to cytokine secretion from hiPSC-CM patches. No lethal arrhythmias were observed. CONCLUSIONS hiPSC-CM patches are promising for future translational research and may have clinical application potential for the treatment of heart failure.
Collapse
Affiliation(s)
- Shigeru Miyagawa
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Takuji Kawamura
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Emiko Ito
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Maki Takeda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hiroko Iseoka
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Junya Yokoyama
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Akima Harada
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Noriko Mochizuki-Oda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yukiko Imanishi-Ochi
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Junjun Li
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masao Sasai
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Fumiyo Kitaoka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Masaki Nomura
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Naoki Amano
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Tomoko Takahashi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Department of Environmental Preventive Medicine (Yamada Bee Company, Inc.), Center for Preventive Medical Sciences, Chiba University, Chiba, 263-8522, Japan
| | - Hiromi Dohi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Eiichi Morii
- Department of Histopathology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
2
|
Nakano Y, Hirano KI, Onishi T, Ando H, Amano T. Prevalence of triglyceride deposit cardiomyovasculopathy among patients with acute coronary syndrome. Eur Heart J Acute Cardiovasc Care 2024; 13:293-295. [PMID: 38207089 PMCID: PMC10927025 DOI: 10.1093/ehjacc/zuae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/11/2023] [Accepted: 01/11/2024] [Indexed: 01/13/2024]
Affiliation(s)
- Yusuke Nakano
- Department of Cardiology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan
| | - Ken-ichi Hirano
- Department of Triglyceride Science, Laboratory of Cardiovascular Disease, Novel, Non-invasive, and Nutritional Therapeutics, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Tomohiro Onishi
- Department of Cardiology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan
| | - Hirohiko Ando
- Department of Cardiology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan
| | - Tetsuya Amano
- Department of Cardiology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan
| |
Collapse
|
3
|
Sakai S, Tanaka Y, Tsukamoto Y, Kimura-Ohba S, Hesaka A, Hamase K, Hsieh CL, Kawakami E, Ono H, Yokote K, Yoshino M, Okuzaki D, Matsumura H, Fukushima A, Mita M, Nakane M, Doi M, Isaka Y, Kimura T. d -Alanine Affects the Circadian Clock to Regulate Glucose Metabolism in the Kidney. Kidney360 2024; 5:237-251. [PMID: 38098136 PMCID: PMC10914205 DOI: 10.34067/kid.0000000000000345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/07/2023] [Indexed: 03/01/2024]
Abstract
Key Points d -Alanine affects the circadian clock to regulate gluconeogenesis in the kidney. d -Alanine itself has a clear intrinsic circadian rhythm, which is regulated by urinary excretion, and acts on the circadian rhythm. d -Alanine is a signal activator for circadian rhythm and gluconeogenesis through circadian transcriptional network. Background The aberrant glucose circadian rhythm is associated with the pathogenesis of diabetes. Similar to glucose metabolism in the kidney and liver, d -alanine, a rare enantiomer of alanine, shows circadian alteration, although the effect of d- alanine on glucose metabolism has not been explored. Here, we show that d- alanine acts on the circadian clock and affects glucose metabolism in the kidney. Methods The blood and urinary levels of d -alanine in mice were measured using two-dimensional high-performance liquid chromatography system. Metabolic effects of d -alanine were analyzed in mice and in primary culture of kidney proximal tubular cells from mice. Behavioral and gene expression analyses of circadian rhythm were performed using mice bred under constant darkness. Results d- Alanine levels in blood exhibited a clear intrinsic circadian rhythm. Since this rhythm was regulated by the kidney through urinary excretion, we examined the effect of d -alanine on the kidney. In the kidney, d -alanine induced the expressions of genes involved in gluconeogenesis and circadian rhythm. Treatment of d- alanine mediated glucose production in mice. Ex vivo glucose production assay demonstrated that the treatment of d -alanine induced glucose production in primary culture of kidney proximal tubular cells, where d -amino acids are known to be reabsorbed, but not in that of liver cells. Gluconeogenetic effect of d -alanine has an intraday variation, and this effect was in part mediated through circadian transcriptional network. Under constant darkness, treatment of d- alanine normalized the circadian cycle of behavior and kidney gene expressions. Conclusions d- Alanine induces gluconeogenesis in the kidney and adjusts the period of the circadian clock. Normalization of circadian cycle by d -alanine may provide the therapeutic options for life style–related diseases and shift workers.
Collapse
Affiliation(s)
- Shinsuke Sakai
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Youichi Tanaka
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yusuke Tsukamoto
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Shihoko Kimura-Ohba
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Atsushi Hesaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Kenji Hamase
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Chin-Ling Hsieh
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiryo Kawakami
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- Department of Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
- Advanced Data Science (ADSP), RIKEN Information R&D and Strategy Headquarters, Yokohama, Kanagawa, Japan
- Institute for Advanced Academic Research (IAAR), Chiba University, Chiba, Japan
| | - Hiraku Ono
- Department of Endocrinology, Hematology and Gerontorogy, Graduate School of Medicine, Chiba University,Chiba, Japan
| | - Kotaro Yokote
- Department of Endocrinology, Hematology and Gerontorogy, Graduate School of Medicine, Chiba University,Chiba, Japan
| | - Mitsuaki Yoshino
- Laboratory of Rare Disease Information and Resource library, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Disease, Osaka University, Suita, Osaka, Japan
| | - Hiroyo Matsumura
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Atsuko Fukushima
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | | | | | - Masao Doi
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tomonori Kimura
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| |
Collapse
|
4
|
Ngwe Tun MM, Nwe KM, Balingit JC, Takamatsu Y, Inoue S, Pandey BD, Urano T, Kohara M, Tsukiyama-Kohara K, Morita K. A Novel, Comprehensive A129 Mouse Model for Investigating Dengue Vaccines and Evaluating Pathogenesis. Vaccines (Basel) 2023; 11:1857. [PMID: 38140260 PMCID: PMC10748371 DOI: 10.3390/vaccines11121857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/01/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
In search of a mouse model for use in evaluating dengue vaccines, we assessed A129 mice that lacked IFN-α/β receptors, rendering them susceptible to dengue virus (DENV) infection. To our knowledge, no reports have evaluated dengue vaccine efficiency using A129 mice. A129 mice were given a single intraperitoneal (IP) or subcutaneous (SC) injection of the vaccine, Dengvaxia. After 14 days of immunization via the IP or SC injection of Dengvaxia, the A129 mice exhibited notably elevated levels of anti-DENV immunoglobulin G and neutralizing antibodies (NAb) targeting all four DENV serotypes, with DENV-4 displaying the highest NAb levels. After challenge with DENV-2, Dengvaxia and mock-immunized mice survived, while only the mock group exhibited signs of morbidity. Viral genome levels in the serum and tissues (excluding the brain) were considerably lower in the immunized mice compared to those in the mock group. The SC administration of Dengvaxia resulted in lower viremia levels than IP administration did. Therefore, given that A129 mice manifest dengue-related morbidity, including viremia in the serum and other tissues, these mice represent a valuable model for investigating novel dengue vaccines and antiviral drugs and for exploring dengue pathogenesis.
Collapse
Affiliation(s)
- Mya Myat Ngwe Tun
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan; (J.C.B.); (Y.T.)
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan;
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo 690-8504, Japan;
| | - Khine Mya Nwe
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan;
| | - Jean Claude Balingit
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan; (J.C.B.); (Y.T.)
| | - Yuki Takamatsu
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan; (J.C.B.); (Y.T.)
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan;
| | - Shingo Inoue
- Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan;
| | - Basu Dev Pandey
- Dejima Infectious Diseases Research Alliance, Nagasaki University, Nagasaki 852-8523, Japan;
| | - Takeshi Urano
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo 690-8504, Japan;
| | - Michinori Kohara
- Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-0057, Japan;
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan;
| | - Kouichi Morita
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan; (J.C.B.); (Y.T.)
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan;
- Dejima Infectious Diseases Research Alliance, Nagasaki University, Nagasaki 852-8523, Japan;
| |
Collapse
|
5
|
Nabeshima T, Ngwe Tun MM, Thuy NTT, Hang NLK, Mai LTQ, Hasebe F, Takamatsu Y. An outbreak of a novel lineage of dengue virus 2 in Vietnam in 2022. J Med Virol 2023; 95:e29255. [PMID: 38009688 DOI: 10.1002/jmv.29255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
In 2022, a large dengue outbreak was reported in Vietnam, where dengue was endemic. A total of 1889 acute-phase serum samples were collected from patients with suspected dengue at Vung Tau General Hospital, the core hospital in Vung Tau Province, southern Vietnam. Among the 1889 samples analyzed for laboratory confirmation of dengue virus (DENV) infection, 339 positive cases were identified, of which 130 were primary infections and 209 were secondary infections. DENV-2 was the dominant serotype in both primary and secondary infection groups. Phylogenetic analysis based on sequences of the envelope protein-coding region revealed the emergence of a new DENV-2 lineage during this outbreak.
Collapse
Affiliation(s)
- Takeshi Nabeshima
- Department of Virology, Institute of Tropical Medicine, Nagasaki University (ITM-NU), Nagasaki, Japan
- Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Mya Myat Ngwe Tun
- Department of Virology, Institute of Tropical Medicine, Nagasaki University (ITM-NU), Nagasaki, Japan
- DEJIMA Infectious Disease Research Alliance, Nagasaki University, Nagasaki, Japan
| | - Nguyen Thi Thu Thuy
- Department of Virology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Nguyen Le Khanh Hang
- Department of Virology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Le Thi Quynh Mai
- Department of Virology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Futoshi Hasebe
- Vietnam Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Yuki Takamatsu
- Department of Virology, Institute of Tropical Medicine, Nagasaki University (ITM-NU), Nagasaki, Japan
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| |
Collapse
|
6
|
Luvai EAC, Kyaw AK, Sabin NS, Yu F, Hmone SW, Thant KZ, Inoue S, Morita K, Ngwe Tun MM. Evidence of Chikungunya virus seroprevalence in Myanmar among dengue-suspected patients and healthy volunteers in 2013, 2015, and 2018. PLoS Negl Trop Dis 2021; 15:e0009961. [PMID: 34851949 PMCID: PMC8635363 DOI: 10.1371/journal.pntd.0009961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 11/01/2021] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Chikungunya virus (CHIKV) is a mosquito-borne virus known to cause acute febrile illness associated with debilitating polyarthritis. In 2019, several institutions in Myanmar reported a CHIKV outbreak. There are no official reports of CHIKV cases between 2011 and 2018. Therefore, this study sought to determine the seroprevalence of CHIKV infection before the 2019 outbreak. METHODS A total of 1,544 serum samples were collected from healthy volunteers and patients with febrile illnesses in Yangon, Mandalay, and the Myeik district in 2013, 2015, and 2018. Participants ranged from one month to 65 years of age. Antibody screening was performed with in-house anti-CHIKV IgG and IgM ELISA. A neutralization assay was used as a confirmatory test. RESULTS The seroprevalence of anti-CHIKV IgM and anti-CHIKV IgG was 8.9% and 28.6%, respectively, with an overall seropositivity rate of 34.5%. A focus reduction neutralization assay confirmed 32.5% seroprevalence of CHIKV in the study population. Age, health status, and region were significantly associated with neutralizing antibodies (NAbs) and CHIKV seropositivity (p < 0.05), while gender was not (p = 0.9). Seroprevalence in 2013, 2015, and 2018 was 32.1%, 28.8%, and 37.3%, respectively. Of the clinical symptoms observed in participants with fevers, arthralgia was mainly noted in CHIKV-seropositive patients. CONCLUSION The findings in this study reveal the circulation of CHIKV in Myanmar's Mandalay, Yangon, and Myeik regions before the 2019 CHIKV outbreak. As no treatment or vaccine for CHIKV exists, the virus must be monitored through systematic surveillance in Myanmar.
Collapse
Affiliation(s)
- Elizabeth Ajema Chebichi Luvai
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- Department of Biomedical Sciences and Technology, School of Health and Biomedical Sciences, The Technical University of Kenya, Nairobi, Kenya
| | - Aung Kyaw Kyaw
- Department of Medical Research, Ministry of Health and Sports, Yangon, Myanmar
| | - Nundu Sabiti Sabin
- Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Fuxun Yu
- Guizhou Provincial People’s Hospital, Guiyang City, Guizhou Province, China
| | - Saw Wut Hmone
- Department of Pathology, University of Medicine-1, Lanmadaw township, Yangon, Myanmar
| | - Kyaw Zin Thant
- Department of Medical Research, Ministry of Health and Sports, Yangon, Myanmar
| | - Shingo Inoue
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Program for Nurturing Global Leaders in Tropical and Emerging Communicable Diseases, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Mya Myat Ngwe Tun
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| |
Collapse
|
7
|
Ghilarov D, Inaba-Inoue S, Stepien P, Qu F, Michalczyk E, Pakosz Z, Nomura N, Ogasawara S, Walker GC, Rebuffat S, Iwata S, Heddle JG, Beis K. Molecular mechanism of SbmA, a promiscuous transporter exploited by antimicrobial peptides. Sci Adv 2021; 7:eabj5363. [PMID: 34516884 PMCID: PMC8442886 DOI: 10.1126/sciadv.abj5363] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/16/2021] [Indexed: 05/12/2023]
Abstract
Antibiotic metabolites and antimicrobial peptides mediate competition between bacterial species. Many of them hijack inner and outer membrane proteins to enter cells. Sensitivity of enteric bacteria to multiple peptide antibiotics is controlled by the single inner membrane protein SbmA. To establish the molecular mechanism of peptide transport by SbmA and related BacA, we determined their cryo–electron microscopy structures at 3.2 and 6 Å local resolution, respectively. The structures show a previously unknown fold, defining a new class of secondary transporters named SbmA-like peptide transporters. The core domain includes conserved glutamates, which provide a pathway for proton translocation, powering transport. The structures show an outward-open conformation with a large cavity that can accommodate diverse substrates. We propose a molecular mechanism for antibacterial peptide uptake paving the way for creation of narrow-targeted therapeutics.
Collapse
Affiliation(s)
- Dmitry Ghilarov
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Satomi Inaba-Inoue
- Department of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, UK
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1, Kouto, Sayo, Hyogo 679-5198, Japan
| | - Piotr Stepien
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Feng Qu
- Department of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, UK
| | | | - Zuzanna Pakosz
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
- Postgraduate School of Molecular Medicine, Warsaw, Poland
| | - Norimichi Nomura
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Satoshi Ogasawara
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Graham Charles Walker
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sylvie Rebuffat
- Molecules of Communication and Adaptation of Microorganisms Laboratory (MCAM, UMR 7245 CNRS-MNHN), Muséum National d’Histoire Naturelle, Sorbonne Universités, Centre National de la Recherche Scientifique, CP 54, 57 rue Cuvier, Paris 75005, France
| | - So Iwata
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
- Research Acceleration Program, Membrane Protein Crystallography Project, Japan Science and Technology Agency, Kyoto, Japan
| | | | - Konstantinos Beis
- Department of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, UK
| |
Collapse
|