ArticleNeural regeneration research2022
Krüppel-like factor 7 attenuates hippocampal neuronal injury after traumatic brain injury.
Article in Neural regeneration research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 29 citations in OpenAlex.
- STAT3 Signaling in Spinal Cord Injury: Neurochemical Mechanisms Linking Neuroinflammation, Mitochondrial Stress, and Glial Remodeling.Neurochemical research · 2026Review
- Peritoneal MSCs-derived exosomes suppress CCL24 synthesis through miR-320d delivery contributing to the improvement of peritoneal dialysis-associated fibrosis.Scientific reports · 2026Article
- APOE4 drives maladaptive heterogeneity and immunometabolic responses of astrocytes.Journal of neuroinflammation · 2026Article
- Oxiracetam ameliorates neurological function after traumatic brain injury through competing endogenous RNA regulatory network.Psychopharmacology · 2025Article
- KLF7 Blocks MKNK2/HIF-1 Pathway-Mediated M1 Microglia Polarization to Ameliorate Ischemic Stroke-Induced Neurological Injury.Brain and behavior · 2025Article
- LncRNA-GPHN Regulates Epilepsy by Inhibiting Apoptosis via the miR-320/YWHAH Axis in an Immature Rat Model of Status Epilepticus.Journal of cellular and molecular medicine · 2025Article
- Distribution and functional significance of KLF15 in mouse cerebellum.Molecular brain · 2025Article
- KLF7 promotes colon adenocarcinoma progression through the PDGFB signaling pathway.International journal of biological sciences · 2024Article
- Ocular and neural genes jointly regulate the visuospatial working memory in ADHD children.Behavioral and brain functions : BBF · 2023Article
- Prospects for Nerve Regeneration and Gene Therapy in the Treatment of Traumatic Brain Injury.Journal of molecular neuroscience : MN · 2023Review
- Molecular function of Krüppel-like factor 7 in biology.Acta biochimica et biophysica Sinica · 2023Review
- Genetic deletion of Krüppel-like factor 11 aggravates traumatic brain injury.Journal of neuroinflammation · 2022Article
- Exosomal lncRNA MIAT enriched in M2 macrophages contributes to electroacupuncture-driven peripheral nerve regeneration through targeting MiR-130a-3p/KLF7.Frontiers in neurologyArticle
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Authors and funding
9 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Our previous study has shown that the transcription factor Krüppel-like factor 7 (KLF7) promotes peripheral nerve regeneration and motor function recovery after spinal cord injury. KLF7 also participates in traumatic brain injury, but its regulatory mechanisms remain poorly understood. In the present study, an HT22 cell model of traumatic brain injury was established by stretch injury and oxygen-glucose deprivation. These cells were then transfected with an adeno-associated virus carrying KLF7 (AAV-KLF7). The results revealed that, after stretch injury and oxygen-glucose deprivation, KLF7 greatly reduced apoptosis, activated caspase-3 and lactate dehydrogenase, downregulated the expression of the apoptotic markers B-cell lymphoma 2 (Bcl-2)-associated X protein (Bax) and cleaved caspase-3, and increased the expression of βIII-tubulin and the antiapoptotic marker Bcl-2. Furthermore, KLF7 overexpression upregulated Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3) phosphorylation in HT22 cells treated by stretch injury and oxygen-glucose deprivation. Immunoprecipitation assays revealed that KLF7 directly participated in the phosphorylation of STAT3. In addition, treatment with AG490, a selective inhibitor of JAK2/STAT3, weakened the protective effects of KLF7. A mouse controlled cortical impact model of traumatic brain injury was then established. At 30 minutes before modeling, AAV-KLF7 was injected into the ipsilateral lateral ventricle. The protein and mRNA levels of KLF7 in the hippocampus were increased at 1 day after injury and recovered to normal levels at 3 days after injury. KLF7 reduced ipsilateral hippocampal atrophy, decreased the injured cortex volume, downregulated Bax and cleaved caspase-3 expression, and increased the number of 5-bromo-2'-deoxyuridine-positive neurons and Bcl-2 protein expression. Moreover, KLF7 transfection greatly enhanced the phosphorylation of JAK2 and STAT3 in the ipsilateral hippocampus. These results suggest that KLF7 may protect hippocampal neurons after traumatic brain injury through activation of the JAK2/STAT3 signaling pathway. The study was approved by the Institutional Review Board of Mudanjiang Medical University, China (approval No. mdjyxy-2018-0012) on March 6, 2018.
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