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Zhang N, Jiang Y, Sun YJ, Jiang JC, Tong YJ. Breeding of a thermostable xylanase-producing strain of Myceliophthora thermophila by atmospheric room temperature plasma (ARTP) mutagenesis. Front Bioeng Biotechnol 2023; 10:1095323. [PMID: 36686237 PMCID: PMC9849395 DOI: 10.3389/fbioe.2022.1095323] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023] Open
Abstract
Introduction: Hemicellulose is an important component in lignocellulose materials, which is second only to cellulose, accounting for 15%-35% of the dry weight of plants. In the current situation of energy shortage, making full use of lignocellulose materials to produce fuel ethanol has become an important way to solve the energy problem. Xylanase plays a crucial role in the utilization of hemicellulose. It is a necessary means to reduce the cost of hemicellulose utilization by improving the activity of xylanase. Moreover, most naturally xylanases are mesophilic enzymes, which limits their industrial application. Methods:In this study, Myceliophthora thermophila was used to produce xylanases and a thermostable mutant M 2103 was obtained by atmospheric room temperature plasma (ARTP) mutagenesis. The research work started with exploring the effects of ARTP mutagenesis on the antioxidase system [superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), polyphenol oxidase (PPO), and antioxidant capacity (AOC)] of M. thermophile, and found that superoxide dismutase activity increased by 221.13%, and polyphenol oxidase activity increased by 486.04% as compared with the original strain when the implantation time was 300 s. So as to determine the conditions for subsequent mutagenesis. Results and Discussion:For the mutant M 2103, the reaction temperature for xylanase production remained stable in the range of 70°C-85°C. Its optimum temperature was 75°C, which was 15°C higher than that of the original strain. And its xylanase activity increased by 21.71% as compared with the original strain. M 2103 displayed a significantly higher relative xylanase activity than the original strain in the acidic (pH 4.0-7.0) range, and the xylanase activity was relatively stable in the pH range of 6.0-8.5. These results provide an alternative biocatalyst for the production of xylooligosaccharide, and a potential usage of ARTP in the mutagenesis of thermostable mutant.
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Affiliation(s)
- Ning Zhang
- Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, National Forestry and Grassland Administration, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, Jiangsu, China,Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Yue Jiang
- Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, National Forestry and Grassland Administration, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, Jiangsu, China,Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Yun-Juan Sun
- Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, National Forestry and Grassland Administration, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, Jiangsu, China,Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China,*Correspondence: Yun-Juan Sun, ; Jian-Chun Jiang,
| | - Jian-Chun Jiang
- Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, National Forestry and Grassland Administration, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, Jiangsu, China,Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China,*Correspondence: Yun-Juan Sun, ; Jian-Chun Jiang,
| | - Ya-Juan Tong
- Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, National Forestry and Grassland Administration, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, Jiangsu, China,Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
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Yu X, Chen X, Liu W, Jiang M, Wang Z, Tao J. Proteomics Analysis of the Spinal Dorsal Horn in Diabetic Painful Neuropathy Rats With Electroacupuncture Treatment. Front Endocrinol (Lausanne) 2021; 12:608183. [PMID: 34177794 PMCID: PMC8224168 DOI: 10.3389/fendo.2021.608183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 04/12/2021] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Clinical evidence demonstrates that electro-acupuncture (EA) of the Zu sanli (ST36) and Shen shu (BL23) acupoints is effective in relieving diabetic painful neuropathy (DPN); however, the underlying molecular mechanism requires further investigation, including the protein molecules associated with EA's effects on DPN. METHODS Sprague-Dawley adult male rats (n =36) were randomly assigned into control, DPN, and EA groups (n=12 each). After four weeks of EA treatment, response to mechanical pain and fasting blood glucose were analyzed. A tandem mass tag (TMT) labeling approach coupled with liquid chromatography with tandem mass spectrometry was used to identify potential biomarkers in the spinal dorsal horn. Further, proteomics analysis was used to quantify differentially expressed proteins (DEPs), and gene ontology, KEGG pathways, cluster, and string protein network interaction analyses conducted to explore the main protein targets of EA. RESULTS Compared with the DPN model group, the mechanical pain threshold was significantly increased, while the fasting blood glucose levels were clearly decreased in EA group rats. Proteomics analysis was used to quantify 5393 proteins, and DEPs were chosen for further analyses, based on a threshold of 1.2-fold difference in expression level (P < 0.05) compared with control groups. Relative to the control group, 169 down-regulated and 474 up-regulated proteins were identified in the DPN group, while 107 and 328 proteins were up- and down-regulated in the EA treatment group compared with the DPN group. Bioinformatics analysis suggested that levels of proteins involved in oxidative stress injury regulation were dramatically altered during the EA effects on DPN. CONCLUSIONS Our results provide the valuable protein biomarkers, which facilitates unique mechanistic insights into the DPN pathogenesis and EA analgesic, antioxidant stress and hypoglycemic effect.
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Affiliation(s)
- Xiangmei Yu
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiaomei Chen
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Weiting Liu
- College of Acupuncture and Moxibustion, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Menghong Jiang
- College of Acupuncture and Moxibustion, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Zhifu Wang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- *Correspondence: Zhifu Wang, ; Jing Tao,
| | - Jing Tao
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- *Correspondence: Zhifu Wang, ; Jing Tao,
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Li Y, Gao Y, Gong Y, Guo Y, Wang L, Liu Q, Chen F, Zhang T. Treatment with Tang-luo-ning altered the microRNA expression profile in rats with diabetic peripheral neuropathy. Bioengineered 2020; 11:841-851. [PMID: 32718271 PMCID: PMC8291862 DOI: 10.1080/21655979.2020.1797282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Tang-luo-ning (TLN) is a traditional Chinese herbal recipe that has been used to treat diabetic peripheral neuropathy (DPN); nevertheless, the underlying mechanism remains unclear. This study was aimed to investigate the microRNA (miRNA) expression profile in diabetic rats treated with TLN, and the target genes were predicted. Male Sprague-Dawley rats were randomly divided into control, diabetes, and TLN-treated diabetes groups. Diabetes was induced with streptozotocin, and TLN (5 g/kg/day) was orally given for eight weeks. Then, the sciatic nerves were harvested for miRNA microarray analyses. The differentially expressed miRNAs and their target genes were analyzed. Compared with the control rats, 24 miRNAs were significantly upregulated, and 59 were downregulated in the sciatic nerves of the diabetic rats by more than two folds (all P < 0.05). In TLN-treated diabetes rats, 26 miRNAs were upregulated, and 14 were downregulated compared with diabetic rats without TLN treatment (all P < 0.05). DPN-induced alterations of the miRNA profile were reversed by the TLN treatment. A total of 1402 target genes were screened. In GO analysis, genes in localization, cytoplasm, and protein binding processes were enriched, and the most significantly enriched pathways included the neurotrophin, Fc epsilon RI, and Wnt signaling pathways. Further analyses revealed that DVL1 and NTF3 genes were involved in these pathways. Our findings indicate that TLN may affect the Wnt and neurotrophin pathways by acting on DVL1 and NTF3 genes.
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Affiliation(s)
- Yixiao Li
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Yanbin Gao
- School of Traditional Chinese Medicine, Capital Medical University , Beijing, China
| | - Yanbing Gong
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Yuxin Guo
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Liying Wang
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Qin Liu
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Feng Chen
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
| | - Taojing Zhang
- Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine , Beijing, China
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