Matrix remodeling associated 7 proteins promote cutaneous wound healing through vimentin in coordinating fibroblast functions

Inflammation and Regeneration

Research Article

Wei Liu¹  Jie Yu¹  Ting Wang²  Ying Shen²  Jinling Ning²  Lu Zhao²  Yiqiang Wang³ 

[1] Department of Pathology, The First Affiliated Hospital of Soochow University, Soochow University, 215006, Suzhou, China;National Clinical Research Center for Hematologic Disease, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou Medical College, Soochow University, 215006, Suzhou, China;National Clinical Research Center for Hematologic Disease, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou Medical College, Soochow University, 215006, Suzhou, China;Eye Institute of Xiamen University, Xiamen University, 361104, Xiamen, China;Wisdom Lake Academy of Pharmacy, Xi’an Jiaotong-Liverpool University, 215123, Suzhou, China;

关键词: MXRA7;    Vimentin;    Fibroblast;    ECM;    Wound healing;   

DOI  :  10.1186/s41232-023-00256-8

 received in 2022-05-14, accepted in 2023-01-05,  发布年份 2023

来源: Springer

【 摘 要 】

Wound healing depends largely on the remodeling of the extracellular matrix around and reorganization of tissue-resident cells. Matrix remodeling associated 7 (MXRA7) is a member of the matrix remodeling-associated gene family and is involved in matrix remodeling-associated processes, such as inflammatory neovascularization, liver injury, and autoimmune skin disease. To investigate whether and how MXRA7 participate in cutaneous wound healing, an ear-punching model was utilized in wild-type (WT) and MXRA7-deficient mice, and the dermal fibroblasts from these mice were further studied in vitro. Results showed that the MXRA7 deficiency impaired the wound healing process in mice. Quantitative PCR indicated that lack of MXRA7 impaired the expression of several extracellular matrix genes (e.g., MMP-2) and inhibited signaling pathways (e.g., STAT3) in healing ear tissues. In in vitro culture system, migration, contraction, or proliferation of fibroblasts was impaired upon MXRA7 deficiency. Pull-down and mass spectrum assay revealed that vimentin was among the proteins that bound MXRA7 proteins in cells, and further investigations indicate MXRA7 was an autocrine factor in fibroblasts that involved vimentin in certain ways, such as JNK and STAT3/STAT5 signaling pathways in our study. In conclusion, MXRA7 proteins promote wound healing through vimentin in coordinating fibroblast functions.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

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