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Volume 40 Issue 3
Mar.  2024
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Article Navigation >  CHINESE JOURNAL OF BURNS AND WOUNDS  > 2024  >  40(3): 240-248
Cao T,Hao T,Xiao D,et al.Effect and mechanism of human adipose-derived stem cell exosomes on diabetic peripheral neuropathy[J].Chin J Burns Wounds,2024,40(3):240-248.DOI: 10.3760/cma.j.cn501225-20231207-00230.
Citation: Cao T,Hao T,Xiao D,et al.Effect and mechanism of human adipose-derived stem cell exosomes on diabetic peripheral neuropathy[J].Chin J Burns Wounds,2024,40(3):240-248.DOI: 10.3760/cma.j.cn501225-20231207-00230.
shu

Effect and mechanism of human adipose-derived stem cell exosomes on diabetic peripheral neuropathy

doi: 10.3760/cma.j.cn501225-20231207-00230
  • 1.

    Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China

  • 2.

    College of Life Sciences, Shaanxi Normal University, Xi'an 710032, China

  • 3.

    Department of Emergency, PLA 63600 Army Hospital, Jiuquan 712750, China

  • 4.

    Department of Wound Repair, Center for Wound Repair and Regenerative Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China

Funds:

General Program of National Natural Science Foundation of China 82272269

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    Abstract
  •   Objective   To investigate the changes of artemin protein expression in diabetic peripheral neuropathy (DPN) and to explore the regulatory effect of human adipose-derived stem cell (ADSC) exosomes on the change of artemin protein expression.   Methods   This research was a prospective observational clinical research combined with experimental research. Thirteen DPN patients (9 males and 4 females, aged 32 to 68 years) who were admitted to the First Affiliated Hospital of Air Force Medical University (hereinafter referred to as our hospital) from May 2022 to October 2023 and met the inclusion criteria were selected as DPN group, and 5 non-diabetes patients (4 males and 1 female, aged 29 to 61 years) who were admitted to our hospital in the same period of time and met the inclusion criteria were selected as control group. The toe nerve or sural nerve tissue in the abandoned tissue after debridement or amputation of patients in the two groups was collected. The pathological changes of nerve tissue were observed after hematoxylin-eosin staining; the protein expressions of S100β and artemin in nerve tissue were observed after immunofluorescence staining, and the artemin protein expression was quantified; the protein and mRNA expressions of artemin were detected by Western blotting and real-time fluorescent quantitative reverse transcription polymerase chain reaction, respectively (the sample number in DPN group and control group was 13 and 5, respectively). Twelve male C57BL/6 mice aged 3 to 5 days were collected to isolate Schwann cells, and the cells were divided into conventional culture group cultured routinely, high glucose alone group (cultured with high concentration of glucose solution only), and high glucose+exosome group (cultured with high concentration of glucose solution and extracted human ADSC exosomes). After 24 hours of culture, the cell proliferation activity was detected by cell counting kit 8 ( n=6). After 48 hours of culture, the protein expression of artemin was detected by Western blotting ( n=3).   Results   Compared with those in control group, the neural supporting cells decreased and the inflammatory cells increased in the nerve tissue of patients in DPN group, showing typical manifestations of nerve injury. Immunofluorescence staining showed that compared with those in control group, the nuclei was more, and the protein expression of S100β was lower in nerve tissue of patients in DPN group. The protein expression of artemin in nerve tissue of patients in DPN group was 71±31, which was significantly lower than 1 729±62 in control group ( t=76.92, P<0.05). Western blotting detection showed that the protein expression of artemin in nerve tissue of patients in DPN group was 0.74±0.08, which was significantly lower than 0.97±0.06 in control group ( t=5.49, P<0.05). The artemin mRNA expression in nerve tissue of patients in DPN group was significantly lower than that in control group ( t=7.65, P<0.05). After 24 hours of culture, compared with that in conventional culture group, the proliferation activities of Schwann cells in high glucose alone group and high glucose+exosome group were significantly decreased ( P<0.05); compared with that in high glucose alone group, the proliferation activity of Schwann cells in high glucose+exosome group was significantly increased ( P<0.05). After 48 hours of culture, compared with those in conventional culture group, the protein expressions of artemin of Schwann cells in high glucose alone group and high glucose+exosome group were significantly decreased ( P<0.05); compared with that in high glucose alone group, the protein expression of artemin of Schwann cells in high glucose+exosome group was significantly increased ( P<0.05).   Conclusions   The protein expression of artemin in nerve tissue of DPN patients is lower than that in normal nerve tissue, which may be related to the reduction of proliferation activity of Schwann cells by high glucose. Human ADSC exosomes may improve the proliferation activity of Schwann cells by increasing artemin protein expression, thereby delaying the progression of DPN.

     

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