1
|
Iwanishi H, Yamanaka O, Sumioka T, Yasuda S, Miyajima M, Saika S. Delayed regression of laser-induced choroidal neovascularization in TNFα-null mice. J Cell Mol Med 2022; 26:5315-5325. [PMID: 36127870 PMCID: PMC9575074 DOI: 10.1111/jcmm.17562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/30/2022] [Accepted: 09/07/2022] [Indexed: 11/28/2022] Open
Abstract
We investigated the effects of lacking TNFα on the development and regression of Argon-laser-induced choroidal neovascularization (CNV) in mice. We lasered ocular fundus for induction of CNV in both wild-type (WT) and TNFα-null (KO) mice. Fluorescence angiography was performed to examine the size of CNV lesions. Gene expression pattern of wound healing-related components was examined. The effects of exogenous TNFα on apoptosis of human retinal microvascular endothelial cells (HRMECs) and on the tube-like structure of the cells were investigated in vitro. The results showed that Argon-laser irradiation-induced CNV was significantly larger in KO mice than WT mice on Day 21, but not at other timepoints. Lacking TNFα increased neutrophil population in the lesion. The distribution of cleaved caspase3-labelled apoptotic cells was more frequently observed in the laser-irradiated tissue in a WT mouse as compared with a KO mouse. Exogenous TNFα induced apoptosis of HRMECs and accelerated regression of tube-like structure of HRMECs in cell culture. Taken together, TNFα gene knockout delays the regression of laser-induced CNV in mice. The mechanism underlying the phenotype might include the augmentation of neutrophil population in the treated tissue and attenuation of vascular endothelial cell apoptosis.
Collapse
Affiliation(s)
- Hiroki Iwanishi
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Osamu Yamanaka
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Takayoshi Sumioka
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Shingo Yasuda
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Masayasu Miyajima
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Shizuya Saika
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| |
Collapse
|
2
|
Chen Y, Gu Y, Xiong X, Zheng Y, Liu X, Wang W, Meng G. Roles of the adaptor protein tumor necrosis factor receptor type 1-associated death domain protein (TRADD) in human diseases. Biomed Pharmacother 2022; 153:113467. [DOI: 10.1016/j.biopha.2022.113467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/02/2022] Open
|
3
|
Zhou Z, Chen H, Li Y, Liu Q, Lu K, Zhu X, Wang Y. Transcriptome and biochemical analyses of rainbow trout (Oncorhynchus mykiss) RTG-2 gonadal cells in response to BDE-47 stress indicates effects on cell proliferation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 245:106108. [PMID: 35189508 DOI: 10.1016/j.aquatox.2022.106108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 02/03/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
2,2',4,4'-Tetrabromodiphenyl ether (BDE-47) is a biotoxin of polybrominated diphenyl ether (PBDEs) frequently detected in the environment. Apoptosis and cell cycle arrest are important toxic phenomena of xenobiotics that inhibit cell proliferation. In this study, we investigated the effects of BDE-47 (5 μM, 10 μM, 20 μM, 40 μM) on cell viability, morphology, cell cycle and apoptosis. BDE-47 significantly decreased cell viability, and morphological alterations were observed. The significant increase in cells at G1 phase indicated the occurrence of G1 phase cell cycle arrest in RTG-2 cells. An acridine orange and ethidium bromide (AO/EB) staining assay was employed and revealed the induction of apoptosis in RTG-2 cells. The results indicated that BDE-47 exposure inhibits cell proliferation. Transcriptome analysis was applied for further evidence. A total of 1300 differentially expressed genes (DEGs) were identified in RTG-2 cells, among which 26 DEGs were associated with the cell cycle and apoptosis. Western blotting and qPCR analyses also showed the expression of cell cycle- and apoptosis-related proteins and genes. Mapping the Kyoto Encyclopedia of Genes and Genomes (KEGG) database, p53, Tumor necrosis factor (TNF), Mitogen-activated protein kinase (MAPK), phosphatidylinositide 3-kinase-AKT (PI3K-AKT), and reaction oxygen species (ROS)-mediated signaling pathways were determined to be the major pathways involved in modulating the cell cycle and apoptosis. Since we demonstrated simultaneous ROS overproduction during BDE-47 exposure in a previous study, we speculated a possible explanation for the observation: BDE-47-induced ROS overproduction was the initiating signal, which activated cell cycle arrest and apoptosis and finally inhibited cell proliferation.
Collapse
Affiliation(s)
- Zhongyuan Zhou
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China.
| | - Hongmei Chen
- Key Laboratory of Xinjiang Endemic Phytomedicine Resources, Ministry of Education, Pharmacology Department, School of Pharmacy, Shihezi University, Shihezi, 832002, China.
| | - Yuanyuan Li
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China.
| | - Qian Liu
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China.
| | - Keyu Lu
- Department of Geography, University College London, London WC1E 6BT, UK.
| | - Xiaoshan Zhu
- Physiology and Toxicology, Graduate School of Shenzhen, Tsinghua University.
| | - You Wang
- Department of Marine Ecology, College of Marine Life Science, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| |
Collapse
|
4
|
Okada J, Matsumoto S, Yamada E, Saito T, Okada K, Watanabe T, Nakajima Y, Ozawa A, Yamada M, Ohshima K, Okada S. TBC1D8B, a GTPase-activating protein, is a novel apoptosis inducer. Biomed Res 2021; 42:95-102. [PMID: 34092754 DOI: 10.2220/biomedres.42.95] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Overexpressed TBC1D8B, a GTPase-activating protein, significantly reduced cultured HCT116 human colon cancer cell number. We tested N-terminal TBC1D8B, which is identical to wild type TBC1D8B from amino acid positions 1 to 427 and possesses a modified sequence from position 428 to 435 (ECGGLFLL) because of the introduction of a premature stop codon at position 436 to narrow down the minimum requirement element. The N-terminal TBC1D8B contains two GRAM domains but not the TBC domain essential for Rab-GTPase activity. The N-terminal TBC1D8B overexpression significantly reduced the cultured HCT116 cell number. When we tested C-terminal TBC1D8B, containing the portion of TBC1D8B absent in the N-terminal TBC1D8B, the cell number reduction was not observed. The N-terminal TBC1D8B overexpression significantly increased the coronin 1B expression and reduced the phosphorylation of serine 51 in eIF2α, respective markers of apoptosis and cell death/survival. Also, caspase 3 and poly ADP-ribose polymerase increased cleavage in suspended cells overexpressing the N-terminal TBC1D8B. Taken together, it is not the TBC domain for Rab-GTPase activity, but amino acids 1 to 435, including the two GRAM domains, that is enough for TBC1D8B to cause spontaneous apoptosis. TBC1D8B could be a potential anticancer therapeutic molecule.
Collapse
Affiliation(s)
- Junichi Okada
- Department of Medicine, Division of Endocrinology, Albert Einstein College of Medicine
| | - Shunichi Matsumoto
- Department of Medicine, Division of Endocrinology, Albert Einstein College of Medicine
| | - Eijiro Yamada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
| | - Tsugumichi Saito
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
| | | | - Takuya Watanabe
- Department of Endocrinology and Metabolism, Saku Central Hospital Advanced Care Center
| | - Yasuyo Nakajima
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
| | - Atsushi Ozawa
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
| | - Masanobu Yamada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
| | | | | |
Collapse
|
5
|
Xu Z, Zheng M, Liu Y, Zhang L, Zhang X, Bai R. Roles of TNF receptor-associated and Fas-associated death domain proteins in the apoptosis of Eimeria tenella host cells. Vet Parasitol 2021; 290:109351. [PMID: 33476903 DOI: 10.1016/j.vetpar.2021.109351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/30/2020] [Accepted: 01/02/2021] [Indexed: 12/22/2022]
Abstract
The present study aimed to investigate the effects of death receptor adapter proteins, namely, TNF receptor-associated death domain (TRADD) and Fas-associated death domain (FADD) proteins, on Eimeria tenella-induced host cell apoptosis. Gene silencing, culture technique for primary chick embryo cecal epithelial cells, enzyme-linked immunosorbent assay, Hoechst-Annexin V/PI apoptosis staining, fluorescence quantitative PCR, and flow cytometry were used to detect the E. tenella host cell apoptotic rate, RIP1 and FADD protein expression levels, and caspase-8 activity of the TRADD siRNA-treated and FADD siRNA-treated groups. Results showed that the apoptotic rate in the TRADD siRNA group was significantly higher than that in the NC siRNA group at 4 h post-infection with E. tenella (P < 0.05). The RIP1 protein expression level in the TRADD siRNA group was significantly lower than that in the NC siRNA group at 4-24 h (P < 0.05). The FADD expression and apoptotic rates in the TRADD siRNA group were significantly lower than those in the NC siRNA group at 24-120 h (P < 0.05). The caspase-8 activity and apoptotic rates in the FADD siRNA group were significantly lower than those in the NC siRNA group (P < 0.05) at 24-120 h. These findings indicated that E. tenella inhibited the host cell apoptosis through the TRADD-RIP1 pathway at the early developmental stage and promoted host cell apoptosis via the TRADD-FADD-caspase-8 apoptotic pathway at the middle and late developmental stages.
Collapse
Affiliation(s)
- ZhiYong Xu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China; College of Animal Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - MingXue Zheng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China.
| | - Yan Liu
- Army Eighty-Three Army Hospital, Xinxiang, 453000, China
| | - Li Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China
| | - XueSong Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China
| | - Rui Bai
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China
| |
Collapse
|