【摘 要】
：
Peripheral nerve injury repair requires a certain degree of cooperation between axon regeneration and Wallerian degeneration.Therefore, investigating how axon regeneration and degeneration work together to repair peripheral nerve injury may uncover the mo
【机 构】
：
Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education,Co-innovation Center of Neu
论文部分内容阅读
Peripheral nerve injury repair requires a certain degree of cooperation between axon regeneration and Wallerian degeneration.Therefore, investigating how axon regeneration and degeneration work together to repair peripheral nerve injury may uncover the molecular mechanisms and signal cascades underlying peripheral nerve repair and provide potential strategies for improving the low axon regeneration capacity of the central nervous system. In this study, we applied weighted gene co-expression network analysis to identify differentially expressed genes in proximal and distal sciatic nerve segments from rats with sciatic nerve injury. We identified 31 and 15 co-expression modules from the proximal and distal sciatic nerve segments, respectively. Functional enrichment analysis revealed that the differentially expressed genes in proximal modules promoted regeneration, while the differentially expressed genes in distal modules promoted neurodegeneration. Next, we constructed hub gene networks for selected modules and identified a key hub gene, Kif22, which was up-regulated in both nerve segments. In vitro experiments confirmed that Kif22 knockdown inhibited proliferation and migration of Schwann cells by modulating the activity of the extracellular signal-regulated kinase signaling pathway. Collectively, our findings provide a comparative framework of gene modules that are co-expressed in injured proximal and distal sciatic nerve segments, and identify Kif22 as a potential therapeutic target for promoting peripheral nerve injury repair via Schwann cell proliferation and migration. All animal experiments were approved by the Institutional Animal Ethics Committee of Nantong University, China (approval No. S20210322-008) on March 22, 2021.
其他文献
Previous studies have shown that the ATP-P2X4 receptor signaling pathway mediates the activation of the Nod-like receptor family protein3 (NLRP3) inflammasome. The NLRP3 inflammasome may promote renal interstitial inflammation in diabetic nephropathy. As
Hypoxic preconditioning can protect against cerebral ischemia/reperfusion injury. However, the underlying mechanisms that mediate this effect are not completely clear. In this study, mice were pretreated with continuous, intermittent hypoxic preconditioni
The regulation of adult neural stem cells (NSCs) is critical for lifelong neurogenesis. MicroRNAs (miRNAs) are a type of small, endogenous RNAs that regulate gene expression post-transcriptionally and influence signaling networks responsible for several c
Hydrogen exhibits the potential to treat Alzheimer\'s disease. Stereotactic injection has been previously used as an invasive method of administering active hydrogen, but this method has limitations in clinical practice. In this study, triple transgenic
In previous studies, researchers have used singing to treat respiratory function in patients with spinal cord injury. However, few studies have examined the way in which vocal training affects respiratory neural plasticity in patients with spinal cord inj
The mechanisms of the transplantation of neural stem cells (NSCs) in the treatment of Alzheimer\'s disease remain poorly understood. In this study, NSCs were transplanted into the hippocampal CA1 region of the rTg (tau P301L) 4510 mouse model, a tauopat
After spinal cord injury (SCI), astrocytes gradually migrate to and surround the lesion, depositing chondroitin sulfate proteoglycan-rich extracellular matrix and forming astrocytic scar, which limits the spread of inflammation but hinders axon regenerati
Circular RNAs (circRNAs) are a class of conserved, endogenous non-coding RNAs that are involved in transcriptional and post-transcriptional gene regulation and are highly enriched in the nervous system. They participate in the survival and differentiation
Tobacco smoking is considered to be one of the main risk factors in the development of chronic pain. Long-term chronic exposure to nicotine and other forms of tobacco have been shown to be associated with an increased incidence of pain. Studies have shown
Studies have shown that downregulation of nuclear-enriched autosomal transcript 1 (Neat1) may adversely affect the recovery of nerve function and the increased loss of hippocampal neurons in mice. Whether Neat1 has protective or inhibitory effects on neur