|
1
|
Zhang M, Jiang S, Zhang W, Xiong Y, Jin S, Wang J, Qiao H, Fu H. Functional Study of the Role of the Methyl Farnesoate Epoxidase Gene in the Ovarian Development of Macrobrachium nipponense. Int J Mol Sci 2024; 25:7318. [PMID: 39000423 PMCID: PMC11242038 DOI: 10.3390/ijms25137318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/24/2024] [Accepted: 07/02/2024] [Indexed: 07/16/2024] Open
Abstract
Methyl farnesoate epoxidase (MFE) is a gene encoding an enzyme related to the last step of juvenile hormone biosynthesis. Mn-MFE cDNA has a total length of 1695 bp and an open reading frame (ORF) length of 1482 bp, encoding 493 amino acids. Sequence analysis showed that its amino acid sequence has a PPGP hinge, an FGCG structural domain, and other structural domains specific to the P450 family of enzymes. Mn-MFE was most highly expressed in the hepatopancreas, followed by the ovary and gill, weakly expressed in heart and muscle tissue, and barely expressed in the eyestalk and cranial ganglion. Mn-MFE expression remained stable during the larval period, during which it mainly played a critical role in gonadal differentiation. Expression in the ovary was positively correlated and expression in the hepatopancreas was negatively correlated with ovarian development. In situ hybridization (ISH) showed that the signal was expressed in the oocyte, nucleus, cell membrane and follicular cells, and the intensity of expression was strongest at stage O-IV. The knockdown of Mn-MFE resulted in a significantly lower gonadosomatic index and percentage of ovaries past stage O-III compared to the control group. However, no differences were found in the cumulative frequency of molting between the experimental and control groups. Moreover, the analysis of ovarian tissue sections at the end of the experiment showed differences between groups in development speed but not in subcellular structure. These results demonstrate that Mn-MFE promotes the ovarian development of Macrobrachium nipponense adults but has no effect on molting.
Collapse
Affiliation(s)
- Mengying Zhang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; (M.Z.); (S.J.); (J.W.)
| | - Sufei Jiang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; (M.Z.); (S.J.); (J.W.)
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| | - Wenyi Zhang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| | - Yiwei Xiong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| | - Shubo Jin
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| | - Jisheng Wang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; (M.Z.); (S.J.); (J.W.)
| | - Hui Qiao
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; (M.Z.); (S.J.); (J.W.)
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| | - Hongtuo Fu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; (M.Z.); (S.J.); (J.W.)
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (W.Z.); (Y.X.); (S.J.)
| |
Collapse
|
|
2
|
Zhu T, Zhou Q, Yang Z, Zhang Y, Luo J, Zhang X, Shen Y, Jiao L, Tocher DR, Jin M. Dietary cholesterol promotes growth and ecdysone signalling pathway by modulating cholesterol transport in swimming crabs (Portunus trituberculatus). ANIMAL NUTRITION 2022; 10:249-260. [PMID: 35785252 PMCID: PMC9234081 DOI: 10.1016/j.aninu.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/12/2022] [Accepted: 05/09/2022] [Indexed: 11/29/2022]
Abstract
Cholesterol, as an indispensable nutrient, regulates molting and growth in crustacean. As crustaceans are unable to biosynthesize cholesterol de novo, it is central to understand how dietary cholesterol affects molting in crustaceans. An 8-week feeding trial was conducted to evaluate the effects of dietary cholesterol level (0.12%, 0.43%, 0.79%, 1.00%, 1.30% and 2.50%) on growth, cholesterol metabolism and expression of genes related to lipid and ecdysone metabolism in female swimming crabs (Portunus trituberculatus). A total of 192 crabs (1.41 ± 0.05 g) were randomly distributed into 192 aquaria. Each treatment had 4 replicates with each replicate containing 8 crabs. Crabs fed the 1.00% cholesterol diet showed best growth performance, and thus based on percent weight gain, the optimal dietary cholesterol requirement was calculated at 1.01%. Tissue cholesterol concentrations were positively correlated with dietary cholesterol level. The contents of functional fatty acids in hepatopancreas significantly increased as dietary cholesterol increased from 0.12% to 2.50% (P < 0.05). The expression levels of genes related to lipogenesis pathway, lipid catabolism and fatty acid oxidation were significantly down-regulated with increased dietary cholesterol level (P < 0.05). The highest expression levels of cholesterol transport genes, low-density lipoprotein receptor (ldlr) and low-density lipoprotein receptor-related protein 2 (lrp2) occurred in crabs fed the 1.30% cholesterol diet. Moreover, hormones related to molting such as crustacean hyperglycemic hormone (CHH), methyl farnesoate (MF), molt-inhibiting hormone (MIH), and ecdysone in hemolymph were significantly influenced by dietary cholesterol level (P < 0.05). The highest expression levels of ecdysone receptor (ecr) and chitinase 1 (chi1) in eyestalk and hepatopancreas were found in crabs fed the diet containing 1.00% cholesterol (P < 0.05). In conclusion, the optimal dietary level was beneficial to functional fatty acid accumulation, regulated lipid metabolism, promoted the ecdysone signalling pathway by improving the cholesterol transport, and improved the molting rate and growth of swimming crabs.
Collapse
Affiliation(s)
- Tingting Zhu
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Qicun Zhou
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
- Corresponding authors.
| | - Zheng Yang
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Yingying Zhang
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Jiaxiang Luo
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Xiangsheng Zhang
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Yuedong Shen
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Lefei Jiao
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
| | - Douglas R. Tocher
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, 515063 Shantou, China
| | - Min Jin
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, 315211 Ningbo, China
- Corresponding authors.
| |
Collapse
|
|
3
|
Chen T, Diao Y, Xu R, Sheng N, Liu F, Xie Q, Su S, Ma K, Li X. Cloning and expression analysis of juvenile hormone epoxide hydrolase-like ( EsJHEH-like) from Eriocheir sinensis, and its potential roles in methyl farnesoate metabolism. INVERTEBR REPROD DEV 2022. [DOI: 10.1080/07924259.2021.2019843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Tiantian Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yingzhu Diao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Ruihan Xu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Na Sheng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Fan Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Qiming Xie
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Shiping Su
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Keyi Ma
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Xilei Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| |
Collapse
|