1.Traditional Chinese Medicine Regulation of Wnt/β-catenin Signaling Pathway for Post-stroke Cognitive Impairment Treatment: A Review
Wanyue XU ; Yanjie LI ; Haoyuan LIU ; Bohua WAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):337-345
Post-stroke cognitive impairment (PSCI) is a common and severe complication in stroke patients, significantly affecting their quality of life and social function. Despite increasing research on PSCI in recent years, effective therapeutic methods remain limited. The Wnt/β-catenin signaling pathway has emerged as a critical research focus in neuroscience due to its essential role in neuroprotection, neurorepair, and cognitive recovery. Dysregulation of the Wnt/β-catenin pathway is considered one of the key mechanisms in the onset and progression of PSCI. Traditional Chinese medicine (TCM), with its multi-component, multi-target, and synergistic properties, has shown unique advantages in modulating the Wnt/β-catenin signaling pathway, providing a potential novel approach for PSCI treatment. TCM regulates the Wnt/β-catenin pathway through various mechanisms and exerts effects such as inhibiting cell apoptosis, maintaining blood-brain barrier integrity, reducing neuroinflammation, promoting neuroplasticity, and enhancing neurorepair, thereby improving post-stroke cognitive function. This review summarized the latest research progress on the regulation of the Wnt/β-catenin signaling pathway by TCM in intervening PSCI. It analyzed the mechanisms of action of various TCM components and compound formulas within this pathway, aiming to provide a theoretical basis for innovative strategies for PSCI treatment in the future and offer new research insights and practical guidance for the application of TCM in cerebrovascular diseases.
2.Traditional Chinese Medicine Regulation of Wnt/β-catenin Signaling Pathway for Post-stroke Cognitive Impairment Treatment: A Review
Wanyue XU ; Yanjie LI ; Haoyuan LIU ; Bohua WAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):337-345
Post-stroke cognitive impairment (PSCI) is a common and severe complication in stroke patients, significantly affecting their quality of life and social function. Despite increasing research on PSCI in recent years, effective therapeutic methods remain limited. The Wnt/β-catenin signaling pathway has emerged as a critical research focus in neuroscience due to its essential role in neuroprotection, neurorepair, and cognitive recovery. Dysregulation of the Wnt/β-catenin pathway is considered one of the key mechanisms in the onset and progression of PSCI. Traditional Chinese medicine (TCM), with its multi-component, multi-target, and synergistic properties, has shown unique advantages in modulating the Wnt/β-catenin signaling pathway, providing a potential novel approach for PSCI treatment. TCM regulates the Wnt/β-catenin pathway through various mechanisms and exerts effects such as inhibiting cell apoptosis, maintaining blood-brain barrier integrity, reducing neuroinflammation, promoting neuroplasticity, and enhancing neurorepair, thereby improving post-stroke cognitive function. This review summarized the latest research progress on the regulation of the Wnt/β-catenin signaling pathway by TCM in intervening PSCI. It analyzed the mechanisms of action of various TCM components and compound formulas within this pathway, aiming to provide a theoretical basis for innovative strategies for PSCI treatment in the future and offer new research insights and practical guidance for the application of TCM in cerebrovascular diseases.
3.Effect of Tongmai Kaiqiao Pills on Mitochondrial Biogenesis of Hippocampal Neurons in Rats with Vascular Cognitive Impairment Based on AMPK/PGC-1α Signaling Pathway
Luyao MA ; Yanjie LI ; Haoyuan LIU ; Yanjie BAI ; Ruoxing XING
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):125-134
ObjectiveTo observe the effects of Tongmai Kaiqiao pills on AMP-activated protein kinase (AMPK)/peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) signaling pathway and mitochondrial biogenesis in hippocampal tissue of rats with vascular cognitive impairment (VCI) and to investigate the potential mechanism of Tongmai Kaiqiao pills in improving cognitive impairment in rats with VCI. MethodsTwelve of 72 male SD rats were selected as the sham operation group, and the remaining rats were modelled using the modified 2VO method. The rats that were successfully modelled were divided into the model group, the high-dose group of Tongmai Kaiqiao pills (27.6 g·kg-1), the low-dose group of Tongmai Kaiqiao pills (13.8 g·kg-1), the combination group (27.6 g·kg-1 Tongmai Kaiqiao pills + 25 mg·kg-1 dorsomorphin), and the donepezil hydrochloride group (0.45 g·kg-1) according to the random number table method. After four weeks of continuous intraperitoneal injection of the corresponding drugs, the Morris water maze test was used to test the learning and memory ability of rats. Hematoxylin-eosin (HE) staining and Nissl staining were used to detect pathological changes in the hippocampus of the rats. The content of mitochondrial adenosine triphosphate (ATP) in the brain hippocampus was detected by colorimetry, and reactive oxygen species (ROS) level was detected in rat mitochondria by MitoSOX Red assay. Mitochondrial DNA copy number was detected by real-time fluorescent quantitative PCR (Real-time PCR). Pathological changes in mitochondria were observed by transmission electron microscopy (TEM), and AMPK, PGC-1α, phosphorylated AMP-activated protein kinase (p-AMPK), nuclear respiratory factor 1 (Nrf1), and mitochondrial transcription factor A (TFAM) protein expression in the hippocampus of the rats were detected by Western blot. ResultsCompared with those in the sham operation group, rats in the model group had a reduced number of platform crossings (P<0.01), significantly prolonged evasion latency (P<0.01), disorganized neuronal arrangement in the hippocampal region, widened gaps, and blurred nucleus membrane and nucleolus boundaries. The emergence of necrotic cells was visible. The color of the nissl bodies was light, and the number was reduced with severe loss. Mitochondria were atrophied, and cristae were lost. Severe damage was observed. The content of ROS was increased, and the level of ATP was decreased. mtDNA copy number decreased significantly (P<0.01), and the protein expression of p-AMPK, PGC-1α, Nrf1, and TFAM decreased (P<0.05, P<0.01). Compared with those in the model group, rats in the high-dose group of Tongmai Kaiqiao pills and donepezil hydrochloride group showed a shorter time to find the platform (P<0.01), increased number of platform crossings (P<0.01), restored mitochondrial morphology and structure of the hippocampal neurons, alleviated neuronal death, increased number of nissl bodies, weaken degree of injury, lower content of ROS, and significantly increased levels of ATP and number of copies of mtDNA (P<0.05, P<0.01). In addition, there was increased protein expression of p-AMPK, PGC-1α, Nrf1, and TFAM (P<0.05, P<0.01). Compared with the model group, the evasion latency was shortened in the low-dose group of Tongmai Kaiqiao pills (P<0.01), and the number of platform crossings was increased, but the difference was not statistically significant. The mitochondria were swollen and deformed, and the cristae became shorter and partially disappeared. The degree of damage did not improve significantly, and the number of nissl bodies was increased but not statistically significant. The ROS content decreased (P<0.01), but there was no significant difference in ATP level and mtDNA copy number. The protein expression of PGC-1α was increased (P<0.05), but there was no significant difference in the protein expression of p-AMPK, Nrf1, and TFAM, and the results were not statistically significant. Compared with the donepezil hydrochloride group, there was no significant change in the results of each assay in the high-dose group of Tongmai Kaiqiao pills, and the difference was not statistically significant. Compared with the high-dose group of Tongmai Kaiqiao pills, rats in the combination group had a significantly lower number of platform crossings (P<0.01), a significantly longer evasion latency (P<0.01), a reduced number of neuronal cells, disorganized tissue structure, swollen and blurred cell outlines, a significant reduction in the number of nissl bodies. Moreover, there was an increase in the content of ROS, a decrease in the level of ATP and the number of mtDNA copies (P<0.01), and a decrease in the expression of p-AMPK, PGC-1α, Nrf1, and TFAM (P<0.05). ConclusionTongmai Kaiqiao pills is able to improve cognitive function in rats by activating the AMPK/PGC-1α signaling pathway, promoting mitochondrial biogenesis, and attenuating pathological damage to neurons in the hippocampal region, thereby demonstrating its therapeutic potential.
4.Jiawei Chunze Decoction treats urinary retention after spinal cord injury in rats based on the regulation of endoplasmic reticulum stress apoptosis
Bochao ZHU ; Yanjie LI ; Hewei QIN ; Nannan ZHAO ; Haoyuan LIU ; Zhenhua XU ; Yupu WANG
Chinese Journal of Tissue Engineering Research 2025;29(2):371-378
BACKGROUND:Preliminary clinical observations found that Jiawei Chunze Decoction is an effective formula for clinical treatment of urinary retention after spinal cord injury.Animal experiments have found that the phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt)signaling pathway is closely related to the degree of bladder dysfunction. OBJECTIVE:To further investigate the effects of Jiawei Chunze Decoction on bladder function and PI3K/Akt signaling pathway in rats with urinary retention. METHODS:Sixty female Sprague-Dawley rats were randomly divided into sham operation group,model group,Jiawei Chunze Decoction low-dose group,Jiawei Chunze Decoction high-dose group and agonist group.In the sham operation group,the spinal cord was exposed but not transected.In the other groups,the modified Hassan Shaker spinal cord transection method was used to prepare the model of sacral medullary injury.At 24 hours after modeling,the sham operation group and model group were intragastrically given equal volume of normal saline,Jiawei Chunze Decoction low-dose and high-dose groups were given Jiawei Chunze Decoction granules containing 14.4 and 28.8 g/kg,respectively,via intragastric administration for 4 weeks,and the agonist group was treated with an intraperitoneal injection of PI3K/Akt signaling pathway agonist 740Y-P at a dose of 0.02 mg/kg.After 4 weeks of treatment,the maximum bladder capacity,leakage point pressure and bladder compliance of rats in each group were detected by urine flow dynamics.The minimum bladder contraction tension and frequency of rats in each group were detected by detrusor pull test.The pathological changes of the rat bladder in each group were observed by hematoxylin-eosin staining.The concentrations of GRP78,CHOP and Caspase-12 in serum were detected by ELISA,and the mRNA and protein expressions of PI3K,Akt,GRP78,CHOP and Caspase-12 in bladder tissues were detected by RT-PCR and western blot,respectively. RESULTS AND CONCLUSION:Compared with the sham operation group,the maximum bladder volume,bladder compliance and minimum systolic tension of rats in the model group were increased(P<0.05),and the leakage point pressure and bladder contraction frequency were decreased(P<0.05);serum GRP78,CHOP,and Caspase-12 levels were also increased(P<0.05).The arrangement of bladder epithelial cells in the model group was disordered,and there was monocyte infiltration between cells,tissue edema,and detrusor tract atrophy.The mRNA and protein expressions of PI3K and Akt in bladder tissues were significantly decreased in the model group compared with the sham operation group,while those of GRP78,CHOP and Caspase-12 were increased(P<0.05).Compared with the model group,the maximum bladder volume,bladder compliance and minimum systolic tension of rats were decreased in the Jiawei Chunze Decoction low-dose,high-dose and agonist groups after 4 weeks of intervention(P<0.05),while the leakage point pressure and bladder contraction frequency were increased(P<0.05);serum GRP78,CHOP,Caspase-12 levels were decreased(P<0.05).The bladder epithelial cells in the three intervention groups were distributed evenly,arranged neatly,with less inflammatory cell infiltration and fuller detrusor muscle bundle.Compared with the model group,the mRNA and protein expressions of PI3K and Akt were increased in the three intervention groups,while those of GRP78,CHOP and Caspase-12 were decreased(P<0.05).The Jiawei Chunze Decoction high-dose group was better than the Jiawei Chunze Decoction low-dose group and shared the similar results with the agonist group.To conclude,Jiawei Chunze Decoction can improve the bladder function of rats with urinary retention after spinal cord injury,and the mechanism may be related to reducing the occurrence of endoplasmic reticulum stress in bladder tissue through the PI3K/Akt signaling pathway,and then alleviating apoptosis.
5.Traditional Chinese medicine monomer in treatment of neuroinflammation after spinal cord injury:effects of nuclear transcription factor kappa B signaling pathway
Zhenhua XU ; Yanjie LI ; Hewei QIN ; Haoyuan LIU ; Bochao ZHU ; Yupu WANG
Chinese Journal of Tissue Engineering Research 2025;29(3):590-598
BACKGROUND:Targeted therapy based on nuclear transcription factor kappa B signaling pathway to explore neuroinflammation is increasingly worth exploring,and the advantages of Chinese medicine such as many targets,wide range,rich mechanisms,and few side effects have great potential in the treatment of various diseases. OBJECTIVE:Based on the nuclear transcription factor kappa B signaling pathway,this paper systematically expounded and summarized the research progress of kaempferol,safflower yellow,baicalin,and triptolide in the treatment of neuroinflammation after spinal cord injury. METHODS:Search terms"spinal cord injury,inflammation,anti-inflammatory,traditional Chinese medicine monomer,monomeric compound,NF-κB signaling pathway,flavonoids,glycosides,phenols,esters,alkaloids"were searched in CNKI and PubMed databases.Totally 67 articles were finally included. RESULTS AND CONCLUSION:(1)The role of nuclear transcription factor kappa B signaling pathway in the nervous system is complex and diverse,which can regulate neutrophils,microglia,astrocytes,and macrophages,and mediate the occurrence and development of inflammation after injury.(2)The effects of traditional Chinese medicine monomers such as baicalin on the degradation of nuclear transcription factor kappa B inhibitory protein,the inhibition of phosphorylation process by safflowerin on nuclear transcription factor kappa B signaling pathway,and the inhibition of kaempferol on nuclear transcription factor kappa B signaling pathway p65 nuclear translocation can reduce the impact of inflammatory response on the body,thereby promoting the recovery of neurological function.(3)The nuclear transcription factor kappa B signaling pathway can promote inflammation and immune cell migration and activation in the early stage of injury,and can promote the repair of injury site and the occurrence of fibrosis in the middle and late stages of injury.Appropriate activation of the nuclear transcription factor kappa B signaling pathway can promote the release of inflammatory factors,improve the antioxidant capacity of cells,and promote the activation of immune cells,but the over-activated nuclear transcription factor kappa B signaling pathway can easily lead to the occurrence and continuation of chronic inflammation and the inhibition of apoptosis.(4)Future research can further explore how to accurately regulate the activation level of nuclear transcription factor kappa B signaling pathway,how to achieve precise intervention for nervous system inflammation and injury,and can also focus on the preparation of traditional Chinese medicine monomers and the mechanism of action of traditional Chinese medicine monomers on signaling pathways,in order to provide more effective treatment strategies for the rehabilitation and functional recovery of neurological diseases.
6.Effect of Modified Chunzetang on Bladder Fibrosis and Detrusor Function in Rats with Neurogenic Bladder Urinary Retention Induced by Spinal Cord Injury via Regulating NF-κB/TGF-β1 Signaling Pathway
Zhenhua XU ; Yanjie LI ; Yafeng REN ; Haoyuan LIU ; Bochao ZHU ; Juan LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):95-103
ObjectiveTo investigate the therapeutic effect and mechanism of modified Chunzetang on bladder fibrosis and detrusor function in rats with neurogenic bladder urinary retention induced by spinal cord injury. MethodsIn this study, an improved Hassan Shaker spinal cord transection method was used to establish a model of neurogenic bladder urinary retention induced by spinal cord injury, and rats with a spinal cord injury behavior score of 0 were selected for follow-up experiments. The selected rats were randomly divided into a model group (normal saline gavage), low-dose traditional Chinese medicine (TCM) group (gavage of 14.4 g·kg-1 modified Chunzetang), high-dose TCM group (gavage of 28.8 g·kg-1 modified Chunzetang), positive drug group [intraperitoneal injection of 0.05 g·kg-1 nuclear transcription factor-κB (NF-κB) inhibitor pyrrolidine dithiocarbamate (PDTC)], and combination group (intraperitoneal injection of 0.05 g·kg-1 PDTC + gavage of 28.8 g·kg-1 modified Chunzetang). The rats in these groups were administrated with corresponding drugs once a day for four weeks. The BL-420s biofunction acquisition system was used in the experiment to calculate the urodynamic indexes, and the isolated bladder was quickly weighed. The detrusor traction experiment was used to record the minimum bladder contraction tension and frequency in each group. The pathological morphology and tissue fibrosis of detrusor in each group observed by Hematoxycin-eosin (HE) staining and Masson staining were compared. The expression level of α-smooth muscle actin (α-SMA) was detected by immunohistochemistry. Western blot was used to detect the protein expression of NF-κB p65, nuclear transcription factor-κB suppressor protein α (IκBα), transforming growth factor-β1 (TGF-β1), type Ⅰ collagen (ColⅠ), and type Ⅲ collagen (ColⅢ) in bladder tissue of rats in each group. Enzyme-linked immunosorbent assay (ELISA) was used to detect the changes in serum levels of IL-6, IL-1β, and TNF-α. ResultsCompared with that in the sham operation group, the pressure at the urinary leakage point in the model group decreased (P<0.01), and the bladder mass, bladder contractile tension, maximum bladder capacity, and bladder compliance increased (P<0.05,P<0.01). HE staining showed that the arrangement of bladder epithelial cells was disordered, and the pathological manifestations such as mucosa and myometria neutrophil infiltration were obvious. The lamina propria structure was destroyed, and the muscle fiber arrangement was disordered. The interstitial widening and tissue edema were obvious. Masson staining showed that the bladder wall of the model group had more collagen fiber deposition, and the degree of detrusor fibrosis was more severe. The content of detrusor in the visual field was reduced. At the same time, the protein expressions of NF-κB p65, TGF-β1, IκBα, ColⅠ, and ColⅢ in bladder tissue of rats in the model group were significantly increased (P<0.01), and the serum levels of IL-6, IL-1β, and TNF-α were significantly increased (P<0.05). Compared with that in the model group, the pressure at the urinary leakage point in the modified Chunzetang and positive drug groups was increased (P<0.05), and the wet bladder weight, minimum bladder contractile tension, maximum bladder capacity, and bladder compliance were restored (P<0.05, P<0.01). HE and Masson showed that the bladder epithelial cells were relatively neatly arranged, and the structure of the bladder lamina propria was relatively stable. The detrusor bundles were arranged in an orderly manner, and the interstitium was narrow. The degree of tissue edema was relatively low, and the degree of bladder detrusor fibrosis in the modified Chunzetang and positive drug groups was reduced, while the degree of bladder detrusor fibrosis in the positive drug group and combination groups was not obvious. The results of Western blot showed that the expression of NF-κB p65, IκBα, TGF-β1, ColⅠ, and ColⅢ in bladder tissue, as well as the serum levels of IL-6, IL-1β, and TNF-α in modified Chunzetang and positive drug groups were significantly lower, and the expression of bladder tissue-related proteins and the serum levels of IL-6, IL-1β, and TNF-α in the TCM groups decreased significantly with the increase in dose (P<0.05). The results of immunohistochemistry suggested that modified Chunzetang could fully affect the expression of α-SMA in bladder tissue. ConclusionModified Chunzetang can inhibit collagen deposition in bladder tissue of rats with urinary retention induced by spinal cord injury, delay the occurrence and development of bladder fibrosis, and protect the normal contractile function of bladder detrusor, and its mechanism may be related to inhibiting the NF-κB/TGF-β1 signaling pathway, reducing the production of NF-κB p65, IκBα, TGF-β1, ColⅠ, ColⅢ, and other related proteins, and protecting the muscle strength of detrusor.
7.Comparison of efficacy and influential factors between tislelizumab and sintilimab in the treatment of advanced NSCLC
Yan PAN ; Shengxi YANG ; Jiaxin LIU ; Haoyuan QIAN ; Wenlian TU
China Pharmacy 2025;36(24):3096-3101
OBJECTIVE To compare the efficacy and safety of chemotherapy combined with tislelizumab or sintilimab in patients with advanced non-small cell lung cancer (NSCLC), and to analyze the influential factors of prognostic. METHODS A retrospective study was conducted on 163 patients with advanced NSCLC who received chemotherapy combined with tislelizumab or sintilimab at the First People’s Hospital of Yunnan Province from September 1, 2021 to November 30, 2024. Among them, there were 90 patients in the tislelizumab group and 73 patients in the sintilimab group. The objective response rate (ORR), disease control rate (DCR), progression free survival (PFS), and overall survival (OS) of two groups were observed, and the occurrence of adverse drug reactions in patients was evaluated. Kaplan-Meier method was used to plot PFS and OS survival curves, Log-rank test was applied for univariate analysis, and Cox regression model was used to evaluate the independent prognostic factors of PFS and OS. RESULTS The median PFS of patients in the tislelizumab group and the sintilimab group were 14.14 months (95%CI of 10.95-17.33) and 10.95 months (95%CI of 8.75-13.15), respectively. The median OS was 25.89 months (95%CI of 22.67-29.11) and 24.25 months (95%CI of 19.34-29.16), with ORR of 45.56% and 49.32%, DCR of 94.44% and 90.41%, and the incidence of adverse drug reactions of 84.44% and 79.45%, respectively, the differences were not statistically significant (P>0.05). Age ≥60 years (HR=1.542, 95%CI of 1.044-2.278, P=0.029) and systemic immune inflammatory nutritional index (SIINI)> 116.58 (HR=1.541, 95%CI of 1.058-2.245, P=0.024) were risk factors for PFS in NSCLC patients receiving immune checkpoint inhibitor therapy; the use of antibiotics may affect the overall survival of patients (P=0.001). CONCLUSIONS The efficacy and safety of chemotherapy combined with tislelizumab or sintilimab for advanced NSCLC are comparable; age≥60 years and SIINI >116.58 are risk factors for PFS in NSCLC patients, and the use of antibiotics may affect the patients’ OS.
8.Role and mechanism of long non-coding RNA HSFAS in hypertrophic scar analyzed using RNA pull-down combined mass spectrometry
Tongtong XIA ; Fang MA ; Haoyuan SUN ; Honglin LIU ; Zhenghao ZHANG ; Jiaqi YANG ; Huiping ZHANG ; Kai WU ; Jiangyong SHEN ; Yideng JIANG ; Guizhong LI
Chinese Journal of Tissue Engineering Research 2025;29(12):2492-2499
BACKGROUND:Previous studies found that the proliferative scar-specific long non-coding RNA lncRNA HSFAS is a novel biomarker that can be used in the diagnosis of hypertrophic scar,but how it functions in hypertrophic scar is not clear. OBJECTIVE:To investigate the role and mechanism of lncRNA HSFAS in hypertrophic scar.METHODS:Fresh scar tissue and surrounding normal skin tissue samples from three patients with hypertrophic scar were collected,and tissue immunofluorescence was used to detect the expression of lncRNA HSFAS in frozen sections of two skin tissues. Primary fibroblasts were isolated from proliferative scarred skin tissue and normal skin tissue and cultured by enzyme digestion method. Quantitative real-time PCR was used to detect the mRNA expression of lncRNA HSFAS in cells. The proteins bound to lncRNA HSFAS were detected by RNA pull-down combined mass spectrometry. GO and KEGG were used to analyze the main functions and pathways of lncRNA HSFAS involved in hypertrophic scar progression. The targeted binding of lncRNA HSFAS to proteins was determined by catRAPID and RPISeq website analysis. RESULTS AND CONCLUSION:Compared with normal skin tissue and fibroblasts from normal skin tissue,the expression of lncRNA HSFAS in human hypertrophic scar tissue and primary fibroblasts from hypertrophic scar tissue was significantly increased (P<0.05). There were 510 proteins clearly bound to lncRNA HSFAS by RNA pull-down combined mass spectrometry. The results of GO and KEGG analyses showed that these proteins were mainly involved in RNA splicing and processing,chromosome synthesis and separation,and cell cycle. Among them,the proteins involved in RNA splicing and processing included scaffold attachment factor B2 and DICER1,and the binding fraction with lncRNA HSFAS was higher. The results of bioinformatics analysis showed that lncRNA HSFAS was bound to scaffold attachment factor B2 and DICER1 proteins. To conclude,lncRNA HSFAS may affect gene expression by interacting with scaffold attachment factor B2 and DICER1 proteins to regulate RNA splicing and processing modification,thus promoting the occurrence and development of hypertrophic scar.
9.Role and mechanism of long non-coding RNA HSFAS in hypertrophic scar analyzed using RNA pull-down combined mass spectrometry
Tongtong XIA ; Fang MA ; Haoyuan SUN ; Honglin LIU ; Zhenghao ZHANG ; Jiaqi YANG ; Huiping ZHANG ; Kai WU ; Jiangyong SHEN ; Yideng JIANG ; Guizhong LI
Chinese Journal of Tissue Engineering Research 2025;29(12):2492-2499
BACKGROUND:Previous studies found that the proliferative scar-specific long non-coding RNA lncRNA HSFAS is a novel biomarker that can be used in the diagnosis of hypertrophic scar,but how it functions in hypertrophic scar is not clear. OBJECTIVE:To investigate the role and mechanism of lncRNA HSFAS in hypertrophic scar.METHODS:Fresh scar tissue and surrounding normal skin tissue samples from three patients with hypertrophic scar were collected,and tissue immunofluorescence was used to detect the expression of lncRNA HSFAS in frozen sections of two skin tissues. Primary fibroblasts were isolated from proliferative scarred skin tissue and normal skin tissue and cultured by enzyme digestion method. Quantitative real-time PCR was used to detect the mRNA expression of lncRNA HSFAS in cells. The proteins bound to lncRNA HSFAS were detected by RNA pull-down combined mass spectrometry. GO and KEGG were used to analyze the main functions and pathways of lncRNA HSFAS involved in hypertrophic scar progression. The targeted binding of lncRNA HSFAS to proteins was determined by catRAPID and RPISeq website analysis. RESULTS AND CONCLUSION:Compared with normal skin tissue and fibroblasts from normal skin tissue,the expression of lncRNA HSFAS in human hypertrophic scar tissue and primary fibroblasts from hypertrophic scar tissue was significantly increased (P<0.05). There were 510 proteins clearly bound to lncRNA HSFAS by RNA pull-down combined mass spectrometry. The results of GO and KEGG analyses showed that these proteins were mainly involved in RNA splicing and processing,chromosome synthesis and separation,and cell cycle. Among them,the proteins involved in RNA splicing and processing included scaffold attachment factor B2 and DICER1,and the binding fraction with lncRNA HSFAS was higher. The results of bioinformatics analysis showed that lncRNA HSFAS was bound to scaffold attachment factor B2 and DICER1 proteins. To conclude,lncRNA HSFAS may affect gene expression by interacting with scaffold attachment factor B2 and DICER1 proteins to regulate RNA splicing and processing modification,thus promoting the occurrence and development of hypertrophic scar.
10.Protease inhibitor DUBs-IN-1 suppresses proliferation of Marek's disease virus in chicken cells
Xin AI ; Jiacui XU ; Jialiang XIE ; Haoyuan MA ; Kai YU ; Mingcheng LIU ; Xinyue WANG ; Junyan LIN ; Xu GAO
Chinese Journal of Veterinary Science 2024;44(8):1622-1628
Vaccination is a main measure for protecting chickens against Marek's disease,while it is not able to suppress the infection,proliferation,transmission,and virulence enhancement on Marek's disease virus.Inhibiting the proliferation of Marek's disease virus in chicken is therefore an im-portant option for enhancing defense effectiveness.In this study,a compound,DUBs-IN-1,was found to inhibit the activity of MDV049,a protease encoded by Marek's disease virus,via screening a protease inhibitor library using MDV049 as target and ubiquitin probe.Molecular docking re-vealed that DUBs-IN-1 can interact with the residues which formed the catalytic pocket of MDV049,blocking the interaction between Ub substrate and the catalytic center of MDV049,then suppress the activity of MDV049 with competitive inhibition.Using the CPE model,it was found that DUBs-IN-1 at the concentration of 0.35 and 0.70 μmol/L significantly inhibited the CPE in-duced by Marek's disease virus in CEF cells.Quantitative analysis revealed that DUBs-IN-1 inhibi-ted the proliferation of Marek's disease virus in CEF cells(P<0.01).Furthermore,it was found that the administration of 80 and 150 pg/(kg·d)of DUBs-IN-1 in chicken infected by Marek's disease virus significantly inhibited the proliferation of MDV in T cells(P<0.01).In summary,this study demonstrated that the compound DUBs-IN-1 is able to inhibit the proliferation of Marek's disease virus in chicken cells,laying a theoretical and practical foundation for further de-velopment of the drugs against Marek's disease virus.

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