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Li NZ, Wang ZX, Zhang F, Feng CZ, Chen Y, Liu DJ, Chen SB, Jin Y, Zhang YL, Xie YY, Huang QH, Wang L, Li B, Sun XJ. Threonine dehydrogenase regulates neutrophil homeostasis but not H3K4me3 levels in zebrafish. FEBS J 2024. [PMID: 38652546 DOI: 10.1111/febs.17138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/25/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
l-threonine dehydrogenase (Tdh) is an enzyme that links threonine metabolism to epigenetic modifications and mitochondria biogenesis. In vitro studies show that it is critical for the regulation of trimethylation of histone H3 lysine 4 (H3K4me3) levels and cell fate determination of mouse embryonic stem cells (mESCs). However, whether Tdh regulates a developmental process in vivo and, if it does, whether it also primarily regulates H3K4me3 levels in this process as it does in mESCs, remains elusive. Here, we revealed that, in zebrafish hematopoiesis, tdh is preferentially expressed in neutrophils. Knockout of tdh causes a decrease in neutrophil number and slightly suppresses their acute injury-induced migration, but, unlike the mESCs, the level of H3K4me3 is not evidently reduced in neutrophils sorted from the kidney marrow of adult tdh-null zebrafish. These phenotypes are dependent on the enzymatic activity of Tdh. Importantly, a soluble supplement of nutrients that are able to fuel the acetyl-CoA pool, such as pyruvate, glucose and branched-chain amino acids, is sufficient to rescue the reduction in neutrophils caused by tdh deletion. In summary, our study presents evidence for the functional requirement of Tdh-mediated threonine metabolism in a developmental process in vivo. It also provides an animal model for investigating the nutritional regulation of myelopoiesis and immune response, as well as a useful tool for high-throughput drug/nutrition screening.
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Affiliation(s)
- Ning-Zhe Li
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Zi-Xuan Wang
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Fan Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Chang-Zhou Feng
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
- Department of Clinical Laboratory, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Jiangsu, China
| | - Yi Chen
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Dian-Jia Liu
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Shu-Bei Chen
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Yi Jin
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Yuan-Liang Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Yin-Yin Xie
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Qiu-Hua Huang
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
| | - Lan Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Bing Li
- Department of Biochemistry and Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, China
| | - Xiao-Jian Sun
- Shanghai Institute of Hematology, State Key Laboratory of Omics and Diseases, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, China
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Li K, Nicoli F, Cui C, Wo Y, Liu NF, Feng S, Xi W, Min P, Zhang Y. Vascularized lymph node flaps can survive on venous blood without an arterial inflow: an experimental model describing the dynamics of venous flow using indocyanine green angiography (With video). Burns Trauma 2023; 11:tkad019. [PMID: 37476580 PMCID: PMC10355992 DOI: 10.1093/burnst/tkad019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/28/2023] [Accepted: 03/22/2023] [Indexed: 07/22/2023]
Abstract
Background Several surgeons have described studies of free-tissue transfers using veins instead of arteries. These innovative microsurgical techniques can offer several advantages, such as an easier dissection during flap harvesting, and represent an alternative during an accidental surgical mistake or development of new surgical procedures. The purpose of this study was to describe and explore different constructs of vascularized lymph node transfer (VLNT) only based on venous blood flow in a mouse model, evaluate their blood flow microcirculation through indocyanine green (ICG) angiography and investigate the lymphatic drainage function and the lymph nodes' structures. Methods Five types of venous lymph node flaps (LNF) were created and investigated: Types IA, IB, IC, IIA and IIB were developed by ICG intraoperatively (with videos in the article). Seven weeks later, by applying methylene blue, the recanalization of the lymphatic vessels between the LNF and the recipient site was detected. Lymph nodes were collected at the same time and their structures were analyzed by hematoxylin and eosin staining analysis. Results All of the venous LNFs developed except Type IC. Seven weeks later, methylene blue flowed into Types IA, IB, IIA and IIB from recipient sites. When comparing with arteriovenous lymph node, the medullary sinus was diffusely distributed in venous lymph nodes. The proportion of cells was significantly reduced (p < 0.05). The artery diameters were significantly smaller (p < 0.05). The veins diameters and lymphatic vessels output in Types IA, IB, IIA and IIB were more dilated (p < 0.05). Conclusions This research demonstrated that Type IA, IB, IIA and IIB venous LNFs can retrogradely receive venous blood supply; they can survive, produce a lymphatic recanalization and integrate with the surrounding tissue, despite lymph node structural changes. Our results will improve the understanding of the survival mechanism of venous LNFs and will help researchers to design new studies or lymphatic models and eventually find an alternative procedure for the surgical treatment of lymphedema.
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Affiliation(s)
| | | | | | - Yan Wo
- Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai 200000, P. R. China
| | - Ning Fei Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200000, China
| | - Shaoqing Feng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200000, China
| | - Wenjing Xi
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200000, China
| | - Peiru Min
- Correspondence. Peiru Min, ; Yixin Zhang,
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