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Qian B, Su X, Ye Z, Liu X, Liu M, Zhang H, Wang P, Zhang Z. MoErv14 mediates the intracellular transport of cell membrane receptors to govern the appressorial formation and pathogenicity of Magnaporthe oryzae. PLoS Pathog 2023; 19:e1011251. [PMID: 37011084 PMCID: PMC10101639 DOI: 10.1371/journal.ppat.1011251] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 04/13/2023] [Accepted: 02/28/2023] [Indexed: 04/05/2023] Open
Abstract
Magnaporthe oryzae causes rice blasts posing serious threats to food security worldwide. During infection, M. oryzae utilizes several transmembrane receptor proteins that sense cell surface cues to induce highly specialized infectious structures called appressoria. However, little is known about the mechanisms of intracellular receptor tracking and their function. Here, we described that disrupting the coat protein complex II (COPII) cargo protein MoErv14 severely affects appressorium formation and pathogenicity as the ΔMoerv14 mutant is defective not only in cAMP production but also in the phosphorylation of the mitogen-activated protein kinase (MAPK) MoPmk1. Studies also showed that either externally supplementing cAMP or maintaining MoPmk1 phosphorylation suppresses the observed defects in the ΔMoerv14 strain. Importantly, MoErv14 is found to regulate the transport of MoPth11, a membrane receptor functioning upstream of G-protein/cAMP signaling, and MoWish and MoSho1 function upstream of the Pmk1-MAPK pathway. In summary, our studies elucidate the mechanism by which the COPII protein MoErv14 plays an important function in regulating the transport of receptors involved in the appressorium formation and virulence of the blast fungus.
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Affiliation(s)
- Bin Qian
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Xiaotong Su
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Ziyuan Ye
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Xinyu Liu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Muxing Liu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Haifeng Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Ping Wang
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Zhengguang Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
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Gu H, Peng Y, Chen Y. An Emerging Therapeutic Approach by Targeting Myoferlin (MYOF) for Malignant Tumors. Curr Top Med Chem 2021; 20:1509-1515. [PMID: 32552653 DOI: 10.2174/1568026620666200618123436] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/13/2020] [Accepted: 06/13/2020] [Indexed: 12/31/2022]
Abstract
Myoferlin (MYOF), as a member of the ferlin family, is a type II transmembrane protein with a single transmembrane domain at the carbon terminus. Studies have shown that MYOF is involved in pivotal physiological functions related to numerous cell membranes, such as extracellular secretion, endocytosis cycle, vesicle trafficking, membrane repair, membrane receptor recycling, and secreted protein efflux. Recently, the studies have also revealed that MYOF is overexpressed in a variety of cancers such as colorectal cancer, pancreatic cancer, breast cancer, melanoma, gastric cancer, and non-small-cell lung cancer. High expression of MYOF is associated with the high invasion of tumors and poor clinical prognosis. MYOF medicates the expression, secretion, and distribution of proteins, which were closely related to cancers, as well as the energy utilization of cancer cells, lipid metabolism and other physiological activities by regulating the physiological processes of membrane transport. In this short article, we briefly summarize the latest progress related to MYOF, indicating that small molecule inhibitors targeting the MYOF-C2D domain can selectively inhibit the proliferation and migration of cancer cells, and MYOF may be a promising target for the treatment of malignant tumors.
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Affiliation(s)
- Haijun Gu
- Shanghai Key Laboratory of Regulatory Biology, The Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yangrui Peng
- Shanghai Key Laboratory of Regulatory Biology, The Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yihua Chen
- Shanghai Key Laboratory of Regulatory Biology, The Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
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Sofer A, Schwarzmann G, Futerman AH. The internalization of a short acyl chain analogue of ganglioside GM1 in polarized neurons. J Cell Sci 1996; 109 ( Pt 8):2111-9. [PMID: 8856507 DOI: 10.1242/jcs.109.8.2111] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
In order to study the endocytosis of membrane lipids during the development of neuronal polarity, we examined the internalization of a short acyl chain fluorescent derivative of ganglioside GM1, N-(6-(4-nitrobenz-2-oxa-1,3-diazole-7-yl)-aminohexanoyl)-GM1 (C6-NBD-GM1), in hippocampal neurons cultured at low density. C6-NBD-GM1 was internalized by temperature- and energy-dependent mechanisms, and after short times of incubation, accumulated in endosomes in the axon, cell body and dendrites of neurons maintained for up to 4–5 days in culture. C6-NBD-GM1 was subsequently transported in a retrograde direction to a pool of recycling endosomes in the cell body, with little transport to lysosomes, as indicated by the lack of degradation of C6-NBD-GM1 even after long times, and the re-appearance of intact C6-NBD-GM1 at the cell surface after recycling; similarly, little degradation of C6-NBD-GM1 was detected in N18TG-2 neuroblastoma cells. In hippocampal neurons maintained for longer than 6 days in culture, there was little internalization of C6-NBD-GM1 along the length of axons, but the amount of endocytosis from dendrites was similar to that observed in younger neurons. These results demonstrate that gangliosides turnover rapidly in dendritic membranes at all stages of neuronal development, whereas ganglioside turnover in axons is much less rapid, at least in mature, polarized neurons.
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Affiliation(s)
- A Sofer
- Department of Membrane Research and Biophysics, Weizmann Institute of Science, Rehovot, Israel
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