1
|
Zhao G, He Y, Chen Y, Jiang Y, Li C, Xiong T, Han S, He Y, Gao J, Su Y, Wang J, Wang C. Application of a derivative of human defensin 5 to treat ionizing radiation-induced enterogenic infection. J Radiat Res 2024; 65:194-204. [PMID: 38264835 PMCID: PMC10959430 DOI: 10.1093/jrr/rrad104] [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: 09/25/2023] [Revised: 11/28/2023] [Accepted: 12/17/2023] [Indexed: 01/25/2024]
Abstract
Enterogenic infection is a common complication for patients with radiation injury and requires efficient therapeutics in the clinic. Herein, we evaluated the promising drug candidate T7E21RHD5, which is a peptide derived from intestinal Paneth cell-secreted human defensin 5. Oral administration of this peptide alleviated the diarrhea symptoms of mice that received total abdominal irradiation (TAI, γ-ray, 12 Gy) and improved survival. Pathologic analysis revealed that T7E21RHD5 elicited an obvious mitigation of ionizing radiation (IR)-induced epithelial damage and ameliorated the reduction in the levels of claudin, zonula occluden 1 and occludin, three tight junction proteins in the ileum. Additionally, T7E21RHD5 regulated the gut microbiota in TAI mice by remodeling β diversity, manifested as a reversal of the inverted proportion of Bacteroidota to Firmicutes caused by IR. T7E21RHD5 treatment also decreased the abundance of pathogenic Escherichia-Shigella but significantly increased the levels of Alloprevotella and Prevotellaceae_NK3B31, two short-chain fatty acid-producing bacterial genera in the gut. Accordingly, the translocation of enterobacteria and lipopolysaccharide to the blood, as well as the infectious inflammatory responses in the intestine after TAI, was all suppressed by T7E21RHD5 administration. Hence, this versatile antimicrobial peptide possesses promising application prospects in the treatment of IR-induced enterogenic infection.
Collapse
Affiliation(s)
- Gaomei Zhao
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Yingjuan He
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Yin Chen
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Yiyi Jiang
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Chenwenya Li
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Tainong Xiong
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Songling Han
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Yongwu He
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Jining Gao
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Yongping Su
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Junping Wang
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| | - Cheng Wang
- State Key Laboratory of Trauma and Chemical Poisoning, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Institute of Combined Injury of PLA, Third Military Medical University, Gaotanyan Street No. 30, Shapingba District, Chongqing 400038, China
| |
Collapse
|
2
|
Dahiya A, Agrawala PK, Dutta A. Mitigative and anti-inflammatory effects of Trichostatin A against radiation-induced gastrointestinal toxicity and gut microbiota alteration in mice. Int J Radiat Biol 2023; 99:1865-1878. [PMID: 37531370 DOI: 10.1080/09553002.2023.2242929] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 06/07/2023] [Accepted: 07/18/2023] [Indexed: 08/04/2023]
Abstract
PURPOSE Radiation-induced gastrointestinal injury (RIGI) is a serious side effect of abdominal and pelvic radiotherapy, which often limits the treatment of gastrointestinal and gynaecological cancers. RIGI is also observed during accidental radiological or nuclear scenarios with no approved agents available till date to prevent or mitigate RIGI in humans. Trichostatin A (TSA), an epigenetic modulator, has been currently in clinical trials for cancer treatment and is also well known for its antibiotic and antifungal properties. METHODS In this study, partial body (abdominal) irradiation mice model was used to investigate the mitigative effect of TSA against gastrointestinal toxicity caused by gamma radiation. Mice were checked for alterations in mean body weight, diarrheal incidence, disease activity index and survival against 15 Gy radiation. Structural abnormalities in intestine and changes in microbiota composition were studied by histopathology and 16S rRNA sequencing of fecal samples respectively. Immunoblotting and biochemical assays were performed to check protein nitrosylation, expression of inflammatory mediators, infiltration of inflammatory cells and changes in pro-inflammatory cytokine. RESULTS TSA administration to C57Bl/6 mice improved radiation induced mean body weight loss, maintained better health score, reduced disease activity index and promoted survival. The 16S rRNA sequencing of fecal DNA demonstrated that TSA influenced the fecal microbiota dynamics with significant alterations in the Firmicutes/Bacteriodetes ratio. TSA effectively mitigated intestinal injury, down-regulated NF-κB, Cox-2, iNOS expression, inhibited PGE2 and protein nitrosylation levels in irradiated intestine. The upregulation of NLRP3-inflammasome complex and infiltrations of inflammatory cells in the inflamed intestine were also prevented by TSA. Subsequently, the myeloperoxidase activity in intestine alongwith serum IL-18 levels was found reduced. CONCLUSION These findings provide evidence that TSA inhibits inflammatory mediators, alleviates gut dysbiosis, and promotes structural restoration of the irradiated intestine. TSA, therefore, can be considered as a potential agent for mitigation of RIGI in humans.
Collapse
Affiliation(s)
- Akshu Dahiya
- CBRN Division, Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), India
| | - Paban K Agrawala
- CBRN Division, Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), India
| | - Ajaswrata Dutta
- CBRN Division, Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), India
| |
Collapse
|
3
|
Fernandes A, Oliveira A, Soares R, Barata P. The Effects of Ionizing Radiation on Gut Microbiota, a Systematic Review. Nutrients 2021; 13:3025. [PMID: 34578902 PMCID: PMC8465723 DOI: 10.3390/nu13093025] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/20/2021] [Accepted: 08/26/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The human gut microbiota is defined as the microorganisms that collectively inhabit the intestinal tract. Its composition is relatively stable; however, an imbalance can be precipitated by various factors and is known to be associated with various diseases. Humans are daily exposed to ionizing radiation from ambient and medical procedures, and gastrointestinal side effects are not rare. METHODS A systematic search of PubMed, EMBASE, and Cochrane Library databases was conducted. Primary outcomes were changes in composition, richness, and diversity of the gut microbiota after ionizing radiation exposure. Standard methodological procedures expected by Cochrane were used. RESULTS A total of 2929 nonduplicated records were identified, and based on the inclusion criteria, 11 studies were considered. Studies were heterogeneous, with differences in population and outcomes. Overall, we found evidence for an association between ionizing radiation exposure and dysbiosis: reduction in microbiota diversity and richness, increase in pathogenic bacteria abundance (Proteobacteria and Fusobacteria), and decrease in beneficial bacteria (Faecalibacterium and Bifidobacterium). CONCLUSIONS This review highlights the importance of considering the influence of ionizing radiation exposure on gut microbiota, especially when considering the side effects of abdominal and pelvic radiotherapy. Better knowledge of these effects, with larger population studies, is needed.
Collapse
Affiliation(s)
- Ana Fernandes
- Department of Nuclear Medicine, Centro Hospitalar Universitário de São João, E.P.E., 4200-319 Porto, Portugal;
| | - Ana Oliveira
- Department of Nuclear Medicine, Centro Hospitalar Universitário de São João, E.P.E., 4200-319 Porto, Portugal;
| | - Raquel Soares
- Department of Biomedicine, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
| | - Pedro Barata
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
- Department of Pharmaceutical Science, Faculdade de Ciências da Saúde da Universidade Fernando Pessoa, 4249-004 Porto, Portugal
- Department of Pathology, Centro Hospitalar Universitário do Porto, 4099-001 Porto, Portugal
| |
Collapse
|