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Yang T, Geng F, Tang X, Yu Z, Liu Y, Song B, Tang Z, Wang B, Ye B, Yu D, Zhang S. UV radiation-induced peptides in frog skin confer protection against cutaneous photodamage through suppressing MAPK signaling. MedComm (Beijing) 2024; 5:e625. [PMID: 38919335 PMCID: PMC11196897 DOI: 10.1002/mco2.625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 05/25/2024] [Accepted: 05/27/2024] [Indexed: 06/27/2024] Open
Abstract
Overexposure to ultraviolet light (UV) has become a major dermatological problem since the intensity of ultraviolet radiation is increasing. As an adaption to outside environments, amphibians gained an excellent peptide-based defense system in their naked skin from secular evolution. Here, we first determined the adaptation and resistance of the dark-spotted frogs (Pelophylax nigromaculatus) to constant ultraviolet B (UVB) exposure. Subsequently, peptidomics of frog skin identified a series of novel peptides in response to UVB. These UV-induced frog skin peptides (UIFSPs) conferred significant protection against UVB-induced death and senescence in skin cells. Moreover, the protective effects of UIFSPs were boosted by coupling with the transcription trans-activating (TAT) protein transduction domain. In vivo, TAT-conjugated UIFSPs mitigated skin photodamage and accelerated wound healing. Transcriptomic profiling revealed that multiple pathways were modulated by TAT-conjugated UIFSPs, including small GTPase/Ras signaling and MAPK signaling. Importantly, pharmacological activation of MAPK kinases counteracted UIFSP-induced decrease in cell death after UVB exposure. Taken together, our findings provide evidence for the potential preventive and therapeutic significance of UIFSPs in UV-induced skin damage by antagonizing MAPK signaling pathways. In addition, these results suggest a practicable alternative in which potential therapeutic agents can be mined from organisms with a fascinating ability to adapt.
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Affiliation(s)
- Tingyi Yang
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Fenghao Geng
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Xiaoyou Tang
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
- Medical College of Tibet University, Tibet UniversityLhasaChina
| | - Zuxiang Yu
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Yulan Liu
- The Second Affiliated Hospital of Chengdu Medical CollegeChina National Nuclear Corporation 416 HospitalChengduChina
| | - Bin Song
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Zhihui Tang
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Baoning Wang
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
| | - Bengui Ye
- Medical College of Tibet University, Tibet UniversityLhasaChina
| | - Daojiang Yu
- The Second Affiliated Hospital of Chengdu Medical CollegeChina National Nuclear Corporation 416 HospitalChengduChina
| | - Shuyu Zhang
- Laboratory of Radiation MedicineWest China School of Basic Medical Sciences & Forensic MedicineSichuan UniversityChengduChina
- Medical College of Tibet University, Tibet UniversityLhasaChina
- The Second Affiliated Hospital of Chengdu Medical CollegeChina National Nuclear Corporation 416 HospitalChengduChina
- NHC Key Laboratory of Nuclear Technology Medical Transformation (Mianyang Central Hospital)MianyangChina
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Lin Y, Xia P, Cao F, Zhang C, Yang Y, Jiang H, Lin H, Liu H, Liu R, Liu X, Cai J. Protective effects of activated vitamin D receptor on radiation-induced intestinal injury. J Cell Mol Med 2022; 27:246-258. [PMID: 36579449 PMCID: PMC9843524 DOI: 10.1111/jcmm.17645] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 12/30/2022] Open
Abstract
Radiation-induced intestinal injury (RIII) is a common complication after radiation therapy in patients with pelvic, abdominal, or retroperitoneal tumours. Recently, in the model of DSS (Dextran Sulfate Sodium Salt) -induced intestinal inflammatory injury, it has been found in the study that transgenic mice expressing hVDR in IEC (Intestinal Epithelial Cell) manifest highly anti-injury properties in colitis, suggesting that activated VDR in the epithelial cells of intestine may inhibit colitis by protecting the mucosal epithelial barrier. In this study, we investigated the effect of the expression and regulation of VDR on the protection of RIII, and the radiosensitivity in vitro experiments, and explored the initial mechanism of VDR in regulating radiosensitivity of IEC. As a result, we found that the expression of VDR in intestinal tissues and cells in mice can be induced by ionizing radiation. VDR agonists are able to prolong the average survival time of mice after radiation and reduce the radiation-induced intestinal injury. For lack of vitamin D, the radiosensitivity of intestinal epithelial cells in mice increased, which can be reduced by VDR activation. Ensuing VDR activation, the radiation-induced intestinal stem cells damage is decreased, and the regeneration and differentiation of intestinal stem cells is promoted as well. Finally, on the basis of sequencing analysis, we validated and found that VDR may target the HIF/PDK1 pathway to mitigate RIII. We concluded that agonism or upregulation of VDR expression attenuates radiation-induced intestinal damage in mice and promotes the repair of epithelial damage in intestinal stem cells.
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Affiliation(s)
- Yuhan Lin
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Penglin Xia
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Fangyu Cao
- Incubation Base for Undergraduates' Innovative Practice in Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Cheng Zhang
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Yajie Yang
- Incubation Base for Undergraduates' Innovative Practice in Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Haitao Jiang
- Department of Oral and maxillofacial Trauma and Orthognathic SurgeryStomatological Hospital of Zunyi Medical UniversityZunyiChina
| | - Haishan Lin
- Cancer Centre, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Hu Liu
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Ruling Liu
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Xiaodong Liu
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Jianming Cai
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina,Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
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Suo K, Chen S, Li X, Liu X, Yi J, Zhu J, Lu L, Hao L, Kang Q, Lu J. Radioprotective effect of radiation-induced Lactococcus lactis cell-free extract against 60Coγ injury in mice. J Dairy Sci 2021; 104:9532-9542. [PMID: 34218913 DOI: 10.3168/jds.2021-20291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/07/2021] [Indexed: 01/27/2023]
Abstract
Ionizing radiation (IR) is widely used in the diagnosis and treatment of various cancers. However, IR can cause damage to human health by producing reactive oxygen species. Lactococcus lactis is a type of microorganism that is beneficial to human health and has a strong antioxidant capacity. In this study, the protective effect of normal and IR-induced L. lactis IL1403 cell-free extracts (CFE and IR-CFE, respectively) against oxidative damage in vitro and the radioprotective effect of IR-CFE in vivo was evaluated using 60Coγ-induced oxidative damage model in mice. Results showed that IR-CFE exhibited a stronger oxidative damage-protective effect than CFE for L. lactis IL1403 under H2O2 in vitro. Moreover, IR-CFE also showed strong radioprotective effect on hepatocyte cells (AML-12) under radiation condition, and the effect was better than that of CFE. Animal experiment indicated that IR-CFE could reduce the IR-induced damage to the hematopoietic system by increasing the number of white blood cells and red blood cells in peripheral blood of irradiated mice. It was also observed that IR-CFE could markedly alleviate the 60Coγ-induced oxidative stress via increasing the activities of superoxide dismutase and glutathione peroxidase, enhancing the levels of glutathione, and decreasing the contents of malondialdehyde in serum, liver, and spleen. In addition, IR-CFE also could reduce the activities of alanine transaminase and aspartate aminotransferase in serum, thereby reducing radiation damage to the liver. These results suggested that IR-CFE could be considered as potential candidates for natural radioprotective agents. This study provides a theoretical basis for improving the application of lactic acid bacteria.
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Affiliation(s)
- Keke Suo
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Sisi Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xue Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xin Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Juanjuan Yi
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jiaqing Zhu
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Laizheng Lu
- Zhengzhou Mindtek Biological Technology Co. Ltd., Zhengzhou, Henan 450001, China
| | - Limin Hao
- Institute of Quartermaster Engineering and Technology, Academy of Military Sciences PLA China, Beijing 100010, China.
| | - Qiaozhen Kang
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jike Lu
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China.
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Pradhan R, Ngo PA, Martínez-Sánchez LDC, Neurath MF, López-Posadas R. Rho GTPases as Key Molecular Players within Intestinal Mucosa and GI Diseases. Cells 2021; 10:cells10010066. [PMID: 33406731 PMCID: PMC7823293 DOI: 10.3390/cells10010066] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023] Open
Abstract
Rho proteins operate as key regulators of the cytoskeleton, cell morphology and trafficking. Acting as molecular switches, the function of Rho GTPases is determined by guanosine triphosphate (GTP)/guanosine diphosphate (GDP) exchange and their lipidation via prenylation, allowing their binding to cellular membranes and the interaction with downstream effector proteins in close proximity to the membrane. A plethora of in vitro studies demonstrate the indispensable function of Rho proteins for cytoskeleton dynamics within different cell types. However, only in the last decades we have got access to genetically modified mouse models to decipher the intricate regulation between members of the Rho family within specific cell types in the complex in vivo situation. Translationally, alterations of the expression and/or function of Rho GTPases have been associated with several pathological conditions, such as inflammation and cancer. In the context of the GI tract, the continuous crosstalk between the host and the intestinal microbiota requires a tight regulation of the complex interaction between cellular components within the intestinal tissue. Recent studies demonstrate that Rho GTPases play important roles for the maintenance of tissue homeostasis in the gut. We will summarize the current knowledge on Rho protein function within individual cell types in the intestinal mucosa in vivo, with special focus on intestinal epithelial cells and T cells.
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Wang C, Wang J, Liu X, Han Z, Aimin Jiang, Wei Z, Yang Z. Cl-amidine attenuates lipopolysaccharide-induced mouse mastitis by inhibiting NF-κB, MAPK, NLRP3 signaling pathway and neutrophils extracellular traps release. Microb Pathog 2020; 149:104530. [PMID: 32980473 DOI: 10.1016/j.micpath.2020.104530] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 01/14/2023]
Abstract
Cl-amidine, a peptidylarginine deiminase inhibitor, has been shown to ameliorate the disease course and clinical manifestation in variety of disease models. Due to the beneficial effects of Cl-amidine, it has been becoming the hottest compound for the study in inflammatory diseases. However, the anti-inflammatory activity of Cl-amidine in lipopolysaccharide (LPS)-induced mouse mastitis remains unclear. In this study, we investigated the effects of Cl-amidine on LPS-induced mastitis mouse model. The mouse mastitis model was established by injection of LPS through the canals of the mammary gland. Cl-amidine was administered intraperitoneally 1 h before LPS treatment. The results showed that Cl-amidine significantly attenuated the damage of the mammary gland, which suppressed the activity of myeloperoxidase (MPO). The real-time PCR results indicated that Cl-amidine inhibited the production of TNF-α, IL-1β and IL-6 in LPS-induced mouse mastitis. Moreover, the western blot results indicated that Cl-amidine decreased the phosphorylation of IκB, p65, p38, ERK and the expression of NLRP3 in LPS-induced mouse mastitis. Furthermore, the neutrophils extracellular traps (NETs) were determined by Quant-iT picogreen dsDNA assay kit®, which suggested that Cl-amidine significantly inhibited the NETs in mouse serum. This study demonstrated that Cl-amidine decreased the pathological injury in LPS-induced mouse mastitis by inhibiting NF-κB, MAPK, NLRP3 signaling pathway and NETs release, which provides a potential candidate for the treatment of mastitis.
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Affiliation(s)
- Chaoqun Wang
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China; Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin province, PR China
| | - Jingjing Wang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin province, PR China
| | - Xiao Liu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin province, PR China
| | - Zhen Han
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin province, PR China
| | - Aimin Jiang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin province, PR China
| | - Zhengkai Wei
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Zhengtao Yang
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China.
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