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Khan RIN, Sahu AR, Malla WA, Praharaj MR, Hosamani N, Kumar S, Gupta S, Sharma S, Saxena A, Varshney A, Singh P, Verma V, Kumar P, Singh G, Pandey A, Saxena S, Gandham RK, Tiwari AK. Systems biology under heat stress in Indian cattle. Gene 2021; 805:145908. [PMID: 34411649 DOI: 10.1016/j.gene.2021.145908] [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: 02/13/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 11/26/2022]
Abstract
Transcriptome profiling of Vrindavani and Tharparkar cattle (n = 5 each) revealed that more numbers of genes were dysregulated in Vrindavani than in Tharparkar. A contrast in gene expression was observed with 18.9 % of upregulated genes in Vrindavani downregulated in Tharparkar and 17.8% upregulated genes in Tharparkar downregulated in Vrindavani. Functional annotation of genes differentially expressed in Tharparkar and Vrindavani revealed that the systems biology in Tharparkar is moving towards counteracting the effects due to heat stress. Unlike Vrindavani, Tharparkar is not only endowed with higher expression of the scavengers (UBE2G1, UBE2S, and UBE2H) of misfolded proteins but also with protectors (VCP, Serp1, and CALR) of naïve unfolded proteins. Further, higher expression of the antioxidants in Tharparkar enables it to cope up with higher levels of free radicals generated as a result of heat stress. In this study, we found relevant genes dysregulated in Tharparkar in the direction that can counter heat stress.
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Affiliation(s)
- Raja Ishaq Nabi Khan
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Amit Ranjan Sahu
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Waseem Akram Malla
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Manas Ranjan Praharaj
- Computational Biology and Genomics, National Institute of Animal Biotechnology, Hyderabad, India
| | - Neelima Hosamani
- Computational Biology and Genomics, National Institute of Animal Biotechnology, Hyderabad, India
| | - Shakti Kumar
- Computational Biology and Genomics, National Institute of Animal Biotechnology, Hyderabad, India
| | - Smita Gupta
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Shweta Sharma
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Archana Saxena
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Anshul Varshney
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Pragya Singh
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Vinay Verma
- Division of Physiology and Climatology, Indian Veterinary Research Institute, Bareilly, India
| | - Puneet Kumar
- Division of Physiology and Climatology, Indian Veterinary Research Institute, Bareilly, India
| | - Gyanendra Singh
- Division of Physiology and Climatology, Indian Veterinary Research Institute, Bareilly, India
| | - Aruna Pandey
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Shikha Saxena
- Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Bareilly, India
| | - Ravi Kumar Gandham
- Computational Biology and Genomics, National Institute of Animal Biotechnology, Hyderabad, India.
| | - Ashok Kumar Tiwari
- Division of Biological Standardization, Indian Veterinary Research Institute, Bareilly, India.
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Park JB, Lee JK, Cho ST, Park EY, Riew KD. A biochemical mechanism for resistance of intervertebral discs to metastatic cancer: Fas ligand produced by disc cells induces apoptotic cell death of cancer cells. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2007; 16:1319-24. [PMID: 17684774 PMCID: PMC2200753 DOI: 10.1007/s00586-007-0463-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Accepted: 07/23/2007] [Indexed: 11/24/2022]
Abstract
Metastatic spinal cancer is characterized by the maintenance of normal disc structure until the vertebral body is severely destroyed by cancer cells. Anatomic features of the discs have been thought to be the main factor which confer the discs their resistance to metastatic cancer. However, little is known about the biochemical mechanism to prevent or attenuate the local infiltration of cancer cells into the discs. The purpose of this study was to investigate whether Fas ligand (FasL) produced by disc cells can kill Fas-bearing breast cancer cells by Fas and FasL interaction. Two human breast cancer cells (MCF-7 and MDA-MB-231) were obtained and cultured (1 x 10(6) cells/well), and the expression of Fas was investigated by western blot analysis. Annulus fibrosus cells were isolated and cultured, and the presence of FasL was quantified in the supernatants of three different numbers of annulus fibrosus cells (1x, 2x, and 4 x 10(6) cells/well) by ELISA assay. The MCF-7 and MDA-MB-231 cancer cells were cultured with supernatants of annulus fibrosus cells for 48 h. As controls, MCF-7 and MDA-MB-231 cancer cells were also cultured by themselves for 48 h. Finally, we determined and quantified the apoptosis rates of MCF-7 and MDA-MB-231 cancer cells by Annexin V-FITC and PI and TUNEL at 48 h, respectively. The expression of Fas was identified in MCF-7 and MDA-MB-231 cancer cells. The mean concentrations of FasL in supernatants of annulus fibrosus cells (1x, 2x, and 4 x 10(6) cells/well) were 10.8, 29.6, and 56.4 pg/mL, respectively. After treatment with the supernatant of three different numbers of annulus fibrosus cells, the mean apoptosis rate of MCF-7 cancer cells was increased (2.8%, P < 0.01; 6.7%, P < 0.001; 31.0%, P < 0.001) in a dose-dependent manner of FasL compared to that of control (1.1%). The mean apoptosis rate of MDA-MB-231 cancer cells was also increased (5.7%, P < 0.01; 11.1%, P < 0.001; 25.3%, P < 0.001) in a dose-dependent manner of FasL compared to that of control (2.1%). TUNEL also demonstrated direct evidence of apoptosis of MCF-7 and MDA-MB-231 cancer cells. Our results demonstrate that Fas-bearing cancer cells undergo apoptosis by FasL produced by disc cells, which may be considered as a potential biochemical explanation for the disc's resistance to metastatic cancer.
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Affiliation(s)
- Jong-Beom Park
- Department of Orthopaedic Surgery, The Catholic University of Korea School of Medicine, Uijongbu-si, Kyunggi-do 480-717, South Korea.
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Park JB, Lee JK, Park EY, Riew KD. Fas/FasL interaction of nucleus pulposus and cancer cells with the activation of caspases. INTERNATIONAL ORTHOPAEDICS 2007; 32:835-40. [PMID: 17589843 PMCID: PMC2898961 DOI: 10.1007/s00264-007-0410-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2007] [Revised: 05/17/2007] [Accepted: 05/17/2007] [Indexed: 10/23/2022]
Abstract
Spinal metastatic disease is characterised by the preservation of the intervertebral disc structure, even after severe destruction of the vertebral body by neoplastic tissues. Anatomical features of the discs are thought to be the reason for the disc's resistance to metastatic cancer. However, little is known about the biochemical mechanism to prevent or attenuate the local invasion of cancer cells into the discs. The purpose of this study was to investigate the hypothesis that Fas ligand (FasL) produced by nucleus pulposus cells can kill Fas-expressing cancer cells infiltrating into the discs by the activation of caspases. Fas-expressing MCF-7 breast cancer cells were cultured with (experimental group) and without (control group) supernatant of nucleus pulposus cells containing FasL (50 pg/ml) for 48 h. The apoptosis of MCF-7 breast cancer cells was determined by the TUNEL technique. In addition, the activation of caspase-8, -9 and -3 was investigated by Western blot analysis. After treatment with supernatant of the nucleus pulposus cells containing FasL, the apoptosis of MCF-7 breast cancer cells was significantly increased, along with the activation of caspase-8, -9 and -3 compared with those of the control group. Our results suggest that the Fas/FasL interaction of nucleus pulposus and cancer cells might be a potential mechanism of the disc's resistance to metastatic cancer.
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Affiliation(s)
- Jong-Beom Park
- Department of Orthopaedic Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea School of Medicine, 65-1 Kumho-dong, Uijeongbu-si, Kyunggi-do, 480-717, South Korea.
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Muneta Y, Kikuma R, Uenishi H, Hoshino T, Yoshihara K, Tanaka M, Hamashima N, Mori Y. Molecular cloning, chromosomal location, and biological activity of porcine interleukin-21. J Vet Med Sci 2004; 66:269-75. [PMID: 15107555 DOI: 10.1292/jvms.66.269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A pig interleukin-21 (IL-21) cDNA was successfully cloned and sequenced from porcine peripheral blood lymphocytes (PBL) stimulated with 10 microg/ml concanavalin A (ConA), 10 microg/ml phytohemagglutinin P (PHA), 50 ng/ml phorbol 12-myristate 13-acetate (PMA), and 0.5 microg/ml anti-porcine CD3 antibody for 48 hr. The open reading frame of the porcine IL-21 cDNA is 459 base pairs in length and encodes 152 amino acids. The predicted amino acid sequence of the porcine IL-21 shows 86.2%, 77.7%, and 58.4% identity to the bovine, human, and murine IL-21, respectively. The porcine IL-21 gene was mapped to porcine chromosome 8 (8q22-->q23) by means of fluorescence in situ hybridization and radiation hybrid mapping, where the porcine IL-2 gene had been mapped nearby. The recombinant porcine mature IL-21 expressed by E. coli induced dose-dependent proliferation and IFN-gamma production from a human NK cell line, NK0. The porcine IL-21 identified in this study will be helpful for the enhancement of innate immune responses of pigs.
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Peuster M, Fink C, Reckers J, Beerbaum P, von Schnakenburg C. Assessment of subacute inflammatory and proliferative response to coronary stenting in a porcine model by local gene expression studies and histomorphometry. Biomaterials 2004; 25:957-63. [PMID: 14615159 DOI: 10.1016/s0142-9612(03)00613-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of the study was to analyse inflammatory and proliferative response early after coronary stenting by angiography, histomorphometry and local gene expression analysis using quantitative rt-PCR. Therefore, eight German domestic pigs underwent stenting of the left coronary artery. Selective coronary angiography was performed after 14 days. Explanted coronary arteries were examined histomorphometrically after methacrylate-embedding. Snap-frozen samples were examined for local gene expression of TGF-beta, TNF-alpha, GM-CSF, VEGF, PDGF and Fas Ligand (FasL) by real-time quantitative rt-PCR normalized to the housekeeping gene GAPDH and compared to unstented coronary arteries. All stented coronaries were patent with only little neointima formation. The median vessel diameter was 2.55 mm (range 2.43-2.68 mm). Histopathology revealed little inflammatory response limited to the tissue surrounding the stent struts; luminal area ranged from 84% to 91%. Compared to unstented control arteries, no significant differences in local gene expression were detected for VEGF, PDGF, TGF-beta, TNF-alpha and GM-CSF. Expression of FasL was upregulated as little as 1.7-fold (p=0.01). We conclude that, in native coronary arteries, no significant upregulation of investigated genes regulating vascular remodelling, inflammation or fibrogenesis was demonstrated 14 days after stenting. Whether upregulation of FasL as a marker gene of apoptosis is transient and biological significant requires further investigation.
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Affiliation(s)
- Matthias Peuster
- Clinic for Congenital Heart Defects, Herz-und Diabeteszentrum Bad Oyenhausen, GeorgStr 11, Bad Oeynhausen 32545, Germany.
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Muneta Y, Kikuma R, Yoshihara K, Mori Y. Cloning, expression, and tissue distribution of bovine interleukin-21. Vet Immunol Immunopathol 2003; 95:73-80. [PMID: 12969638 DOI: 10.1016/s0165-2427(03)00106-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bovine interleukin-21 (IL-21) cDNA was cloned and sequenced from bovine peripheral blood lymphocytes (PBLs) stimulated with 10 microg/ml concanavalin A (ConA), 10 microg/ml phytohemagglutinin (PHA), and 50 ng/ml phorbol 12-myristate 13-acetate (PMA) for 48 h. The open reading frame of the bovine IL-21 cDNA is 459 bp in length and encodes 152 amino acids. The predicted amino acid sequence is 78.2 and 58.5% homologous to the human and murine IL-21 amino acid sequences, respectively. Recombinant bovine IL-21 was expressed by a baculovirus expression system. The bovine IL-21 was processed to the mature form in insect cells and secreted to the supernatant confirmed by N-terminal amino acid sequencing. The recombinant bovine mature IL-21 induced the proliferation of human IL-2-dependent cells, ILT-MAT. The mRNA expression for bovine IL-21 was observed in the spleen, but not in the brain, heart, lung, liver, and kidney. The bovine IL-21 identified in this study may provide new methods for the enhancement of innate immunity in cows.
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Affiliation(s)
- Yoshihiro Muneta
- National Institute of Animal Health, 3-1-5 Kannondai Tsukuba, Ibaraki 305-0856, Japan.
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Palmer EM, Baum LG, van Seventer GA. Small intestinal submucosa induces loss of mitochondrial integrity and caspase-dependent apoptosis in human T cells. TISSUE ENGINEERING 2003; 9:307-14. [PMID: 12740093 DOI: 10.1089/107632703764664774] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Porcine small intestinal submucosa (SIS) is a cell-free biomaterial used in humans for wound healing and as scaffold material for constructive remodeling of damaged or missing tissue. We have previously shown that SIS contains a factor that suppresses human helper T cell subset differentiation and expansion by inducing programmed cell death. Our aims here were to identify in detail the processes involved in SIS-induced T cell apoptosis and to perform the first characterization of the apoptosis-inducing factor present in SIS. In in vitro experiments, we utilized human T cell lines, Jurkat and CEM, to identify the processes involved in SIS-induced T cell apoptosis. Two types of sterile SIS material were used: hydrated sheets and rehydrated clinical-grade sheets. We found that SIS-mediated apoptosis as detected by induction of membrane annexin V staining involved the loss of mitochondrial membrane potential and was dependent on caspase activation. We eliminated transforming growth factor beta (TGF-beta), Fas ligand (FasL), and galectin family members as factors in SIS-mediated T cell apoptosis. We further established that processes required to prepare SIS for clinical use, freeze-drying, and gas sterilization destroyed the apoptosis-inducing factor. SIS contains a factor that induces loss of mitochondrial integrity and caspase-dependent apoptosis in human T cells. This factor is destroyed by freeze-drying and gas sterilization and is not TGF-beta, FasL, or a galectin family member. Normal T cell homeostasis in gut-associated tissues may be regulated in part by this unknown factor.
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Affiliation(s)
- E M Palmer
- Department of Environmental Health, Boston University School of Public Health, Boston, Massachusetts 02118, USA
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Tsuyuki S, Kono M, Bloom ET. Cloning and potential utility of porcine Fas ligand: overexpression in porcine endothelial cells protects them from attack by human cytolytic cells. Xenotransplantation 2002; 9:410-21. [PMID: 12371937 DOI: 10.1034/j.1399-3089.2002.01114.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Endothelial cells (EC) are primary targets of the recipient's immune response to transplanted organs and constitutively express Fas (CD95) ligand (FasL) on their surface. We investigated the role of porcine FasL in the generation of the human anti-pig response in vitro. Porcine aortic endothelial cells (PAEC) lysed a Fas+ human T-cell line, Jurkat. Anti-human Fas monoclonal antibody (mAb) specifically inhibited this killing in a dose-dependent manner, suggesting that porcine FasL recognizes and binds human Fas to induce apoptosis of human Fas+ cells. We next cloned porcine FasL, identifying an open reading frame of 849 base pairs predicting a protein of 282 amino acids. The predicted amino acid sequence was 85, 76, and 75% homologous to the predicted amino acid sequences of human, mouse, and rat, respectively, and found that PAEC expressed both FasL mRNA and protein. Transient transfection was used to increase or induce porcine FasL expression in PAEC or COS-7 cells. Transfection of PAEC with a plasmid encoding porcine FasL increased their ability to induce apoptosis in Jurkat cells, fresh human T cells activated with IL-2 and anti-CD3, and fresh IL-2-activated human (natural killer) NK cells. Moreover, porcine Fas L-transfected COS-7 cells induced significant apoptosis in Jurkat cells compared with that induced by mock-transfected COS-7 cells. Finally, the overexpression of porcine FasL in PAEC reduced their susceptibility as target cells to lysis by activated human NK or T cells. These findings suggest that porcine FasL overexpression in EC of vascularized xenografts may provide protection from cellular xenograft rejection.
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Affiliation(s)
- Shigeru Tsuyuki
- Laboratory of Immunology and Virology, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892, USA
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Muneta Y, Uenishi H, Yamamoto R, Yoshihara K, Yasue H, Awata T, Mori Y. Cloning, expression analyses, and chromosomal location of porcine interleukin-18 receptor alpha chain (IL-18Ralpha). J Interferon Cytokine Res 2002; 22:995-1002. [PMID: 12396721 DOI: 10.1089/10799900260286704] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We cloned and sequenced a cDNA that contains the coding sequence of the porcine interleukin-18 receptor alpha chain (PoIL-18Ralpha). Based on the conserved nucleotide sequences between human (HuIL-18Ralpha) and murine IL-18Ralpha (MuIL-18Ralpha), we performed reverse transcription-polymerase chain reaction (RT-PCR) with total RNA prepared from porcine peripheral blood lymphocytes (PBLs) stimulated with PoIL-12 to clone the cDNA of PoIL-18Ralpha. The open reading frame (ORF) of the PoIL-18Ralpha cDNA is 1620 base pairs (bp) in length and encodes 539 amino acids. The predicted amino acid sequence showed 68.2% and 50.2% identity to the human and murine amino acid sequences, respectively. Stimulation with concanavalin A (ConA) and IL-12, but not with IL-4, was shown to upregulate the expression of IL-18Ralpha mRNA in pig PBLs by RT-PCR analysis. Flow cytometric analysis also demonstrated that IL-18Ralpha was constitutively expressed on PoPBLs, and this expression was augmented by ConA stimulation. Furthermore, the PoIL-18Ralpha gene was mapped by fluorescence in situ hybridization (FISH) to porcine chromosome 3 (3q13-q14), near the location at which the IL-1beta gene had already been mapped. The present results will be helpful for understanding PoIL-18 and interferon gamma (IFN-gamma)-mediated T helper 1 (Th1) cell development.
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Affiliation(s)
- Yoshihiro Muneta
- Department of Immunology, National Institute of Animal Health, Tsukuba 305-0856, Japan.
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Motegi-Ishiyama Y, Nakajima Y, Hoka S, Takagaki Y. Porcine Fas-ligand gene: genomic sequence analysis and comparison with human gene. Mol Immunol 2002; 38:581-6. [PMID: 11792426 DOI: 10.1016/s0161-5890(01)00098-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thymic Fas-ligand (FasL) cDNA and hepatic FasL genomic sequences were obtained from a 2-month-old LW pig. From these nucleotide sequences, amino acid sequence was deduced and compared with FasL sequences obtained from various animals. This comparison reveals that porcine FasL is closer to that of human, macaca and cat, and differs more from mouse and rat. The extracelluar domains of porcine and human FasL proteins appear to be functionally compatible. The complete genomic DNA sequence of porcine FasL was also compared with its human counterpart. Exons showed 80-89% nucleotide homology between pig and human, while introns showed 64-69% nucleotide homology. Sequence comparison by Harr plot analysis revealed many stretches within introns having identical sequences, suggesting that the sites may have unidentified common functions. One potential extra exon between exons 2 and 3 was located within porcine intron 2. This potential exon has no counterpart in human FasL intron 2. Whether or not this extra exon can be expressed and could cause additional immunological responses remains to be investigated. For future xenotransplantation, it is important to compare porcine and human genomic sequences, and to investigate their system compatibilities.
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Affiliation(s)
- Yukari Motegi-Ishiyama
- Department of Anesthesiology, School of Medicine, Kitasato University, 1-15-1 Kitasato, Sagamihara-shi 228-8555, Japan
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Muneta Y, Shimoji Y, Mori Y. Porcine caspase-3: its cloning and activity during apoptosis of PK15 cells induced by porcine Fas ligand. J Interferon Cytokine Res 2001; 21:409-15. [PMID: 11440638 DOI: 10.1089/107999001750277880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We cloned and sequenced cDNA that contained the coding sequence of porcine caspase-3. The open reading frame (ORF) of porcine caspase-3 cDNA was 834 base pairs (bp) in length and encoded 277 amino acids. The predicted amino acid sequence was 88.4%, 86.6%, and 87.7% homologous to the predicted human, murine, and rat amino acid sequences, respectively. The activity of caspase-3 in porcine renal tubular cell line PK15 after recombinant porcine Fas ligand (FasL) stimulation was examined. The enzymatic activity of caspase-3, but not that of caspase-1, was significantly increased after FasL treatment. Western blot analysis also showed that the processing of caspase-3 from proenzyme to mature subunits occurred after FasL treatment. The inhibition of caspase-3 by its specific inhibitor partially prevented the apoptotic cell death of PK15 cells caused by FasL. The porcine caspase-3 cDNA isolated in this study will be useful for the study of apoptotic cell death in pigs and will lead to the discovery of therapeutic uses of caspases and their inhibitors in the prevention of viral and bacterial diseases and tissue injury associated with xenotransplantation and allotransplantation.
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Affiliation(s)
- Y Muneta
- Institute of Animal Health, Tsukuba, Ibaraki, 305-0856, Japan.
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