2.SGK1 as a therapeutic target for central nervous system diseases.
Ya-Kang XING ; Wei LUO ; Meng-Yao FAN ; Ya-Wei TAN ; Xiao LI
Acta Physiologica Sinica 2023;75(3):451-464
Serum and glucocorticoid-regulated kinase 1 (SGK1) plays an important role in the physiological processes of hormone release, neuronal excitation and cell proliferation. SGK1 also participates in the pathophysiological processes of inflammation and apoptosis in the central nervous system (CNS). Increasing evidence demonstrates that SGK1 may serve as a target of the intervention of neurodegenerative diseases. In this article, we summarize the recent progress on the role and molecular mechanisms of SGK1 in the regulation of the function of the CNS. We also discuss the potential of newly discovered SGK1 inhibitors in the treatment of CNS diseases.
Humans
;
Cell Proliferation
;
Central Nervous System Diseases/drug therapy*
;
Inflammation
;
Protein Serine-Threonine Kinases/physiology*
3.Effects of intranasal administration of tripterygium glycoside-bearing liposomes on behavioral cognitive impairment of mice induced by central nervous system inflammation.
Min YAN ; Lan ZHANG ; Lu-Lu ZHANG ; Zhen-Qiang ZHANG ; Hua-Hui ZENG ; Xiang-Xiang WU
China Journal of Chinese Materia Medica 2023;48(9):2426-2434
Tripterygium glycosides liposome(TPGL) were prepared by thin film-dispersion method, which were optimized accor-ding to their morphological structures, average particle size and encapsulation rate. The measured particle size was(137.39±2.28) nm, and the encapsulation rate was 88.33%±1.82%. The mouse model of central nervous system inflammation was established by stereotaxic injection of lipopolysaccharide(LPS). TPGL and tripterygium glycosides(TPG) were administered intranasally for 21 days. The effects of intranasal administration of TPG and TPGL on behavioral cognitive impairment of mice due to LPS-induced central ner-vous system inflammation were estimated by animal behavioral tests, hematoxylin-eosin(HE) staining of hippocampus, real-time quantitative polymerase chain reaction(RT-qPCR) and immunofluorescence. Compared with TPG, TPGL caused less damage to the nasal mucosa, olfactory bulb, liver and kidney of mice administered intranasally. The behavioral performance of treated mice was significantly improved in water maze, Y maze and nesting experiment. Neuronal cell damage was reduced, and the expression levels of inflammation and apoptosis related genes [tumor necrosis factor-α(TNF-α), interleukin-1β(IL-1β), BCL2-associated X(Bax), etc.] and glial activation markers [ionized calcium binding adaptor molecule 1(IBA1) and glial fibrillary acidic protein(GFAP)] were decreased. These results indicated that liposome technique combined with nasal delivery alleviated the toxic side effects of TPG, and also significantly ameliorated the cognitive impairment of mice induced by central nervous system inflammation.
Mice
;
Animals
;
Tripterygium
;
Liposomes
;
Glycosides/therapeutic use*
;
Administration, Intranasal
;
Lipopolysaccharides
;
Central Nervous System
;
Cognitive Dysfunction/drug therapy*
;
Inflammation/metabolism*
;
Tumor Necrosis Factor-alpha/metabolism*
;
Cardiac Glycosides
4.Effects of C10orf10 on growth and prognosis of glioma under hypoxia.
Yuanbing CHEN ; Miao TANG ; Hui LI ; Jun HUANG
Journal of Central South University(Medical Sciences) 2023;48(4):499-507
OBJECTIVES:
Glioma is the most common malignant tumor in the central nervous system, and the hypoxic microenvironment is prevalent in solid tumors. This study aims to investigate the up-regulation of genes under the condition of hypoxia and their roles in glioma growth, as well as their impact on glioma prognosis.
METHODS:
The hypoxia-related dataset with glioma was screened in the Gene Expression Omnibus database (GEO), and the differentially expressed genes were analyzed between hypoxia and normoxia through bioinformatics, and chromosome 10 open reading frame 10 (C10orf10) was verified and screened in hypoxia-treated cells through real-time PCR and Western blotting. The Cancer Genome Atlas (TCGA) and the Chinese Glioma Genome Atlas (CGGA) datasets were downloaded to analyze the mRNA expression of C10orf10 in different grades of glioma and its impact on prognosis. The glioma specimens and follow-up data of 68 gliomas who underwent surgical treatment in Xiangya Hospital of Central South University from March 2017 to January 2021 were collected, and real-time PCR was used to detect the mRNA expression of C10orf10 in different grades of glioma, and the Kaplan-Meier method was used to analyze the relationship between the expression C10orf10 and prognosis. The glioma cells, which could interfere the expression of C10orf10, were constructed, and the effect of C10orf10 on the proliferation of glioma cells was evaluated by cell counting kit-8 (CCK-8) and colony formation assays.
RESULTS:
Compared with the condition of normoxia, the expression levels of C10orf10 mRNA and protein were significantly up-regulated in glioma cells under hypoxia (P<0.001), and the mRNA expression level of C10orf10 in glioma tissues was up-regulated with the increase of WHO grade in glioma (P<0.001). Based on Kaplan-Meier survival analysis, the higher the mRNA expression level of C10orf10 was, the shorter the survival time of the patient was (P<0.05). And the expression of C10orf10 mRNA was higher in recurrent gliomas than that in primary gliomas in the CGGA database (P<0.001). Knockdown of C10orf10 could significantly inhibit the growth of glioma cells both under hypoxia and normoxia (both P<0.001).
CONCLUSIONS
The expression level of C10orf10 can promote the proliferation and prognosis of glioma, which is expected to become a prognostic marker and therapeutic target for glioma.
Humans
;
Central Nervous System
;
Glioma/genetics*
;
Hypoxia
;
Neoplasm Recurrence, Local
;
Prognosis
;
Tumor Microenvironment
5.Research progress in role of exosomes exosomes in mental disorders.
Jialing WU ; Shansi LI ; Yi ZHANG
Journal of Central South University(Medical Sciences) 2023;48(5):771-781
Exosomes are a class of extracellular vesicles with a structure of lipid bilayer-membrane. In the central nervous system (CNS), exosomes can be secreted from both neurons and glial cells. Exosomes released into the extracellular matrix can freely cross the blood-brain barrier and function as crucial carriers of cellular communication and substance exchange in the CNS. Exosomes play a key role in the pathological process of mental disorders such as schizophrenia, depression, and bipolar disorder, and they have the potential to be used as a targeted carrier of antipsychotic medications. Exosomes are likely to become a new tool in the future to aid in the early prevention, accurate diagnosis, and effective treatment for people with mental disorders.
Humans
;
Exosomes/physiology*
;
Extracellular Vesicles/physiology*
;
Central Nervous System
;
Mental Disorders
;
Blood-Brain Barrier
7.Advances in basic research on choline and central nervous system development and related disorders.
Zheng Long XIA ; Xu Ying TAN ; Yan Yan SONG
Chinese Journal of Preventive Medicine 2023;57(5):793-800
Choline is an essential nutrient that plays an integral role in all stages of the life cycle, with increasing interest in the relationship between choline and neurodevelopment. Choline is a major component in the synthesis of phospholipids, phosphatidylcholine and sphingolipids, and is an essential nutrient for methyl metabolism, acetylcholine synthesis and cell signaling. Choline plays an important role in neurogenesis and neural migration during fetal development, potentially influencing the development and prognosis of neurological disorders, but its mechanism of action is not yet clear. This article reviews the source and metabolism of choline, the effects and mechanism of choline on neurodevelopment and central nervous system related disorders.
Humans
;
Choline/metabolism*
;
Phosphatidylcholines/metabolism*
;
Central Nervous System/metabolism*
10.Value of chromosomal microarray analysis for the diagnosis of fetuses with anomalies of central nervous system.
Peixuan CAO ; Xiangyu ZHU ; Leilei GU ; Wei LIU ; Jie LI
Chinese Journal of Medical Genetics 2023;40(2):181-185
OBJECTIVE:
To assess the value of chromosomal microarray analysis (CMA) for the diagnosis of fetuses with anomalies of the central nervous system (CNS) and summarize the outcome of the pregnancies and follow-up.
METHODS:
A total of 636 fetuses from June 2014 to December 2020 who were referred to the Prenatal Diagnosis Center of Nanjing Drum Tower Hospital due to abnormal CNS prompted by ultrasound were selected as the research subjects. Based on the ultrasound findings, the fetuses were divided into ventricular dilatation group (n = 441), choroid plexus cyst group (n = 41), enlarged posterior fossa group (n = 42), holoprosencephaly group (n = 15), corpus callosum hypoplasia group (n = 22), and other anomaly group (n = 75). Meanwhile, they were also divided into isolated (n = 504) and non-isolated (n = 132) groups based on the presence of additional abnormalities. Prenatal samples (amniotic fluid/chorionic villi/umbilical cord blood) or abortus tissue were collected for the extraction of genomic DNA and CMA assay. Outcome of the pregnancies and postnatal follow-up were summarized and subjected to statistical analysis.
RESULTS:
In total 636 fetuses with CNS anomalies (including 89 abortus tissues) were included, and 547 cases were followed up. The overall detection rate of CMA was 11.48% (73/636). The detection rates for the holoprosencephaly group, ACC group, choroid plexus cyst group, enlarged posterior fossa group, ventricular dilatation group and other anomaly group were 80% (12/15), 31.82% (7/22), 19.51% (8/41), 14.29% (6/42), 7.48% (33/441) and 9.33% (7/75), respectively. Compared with the isolated CNS anomaly group, the detection rate for the non-isolated CNS anomaly group was significantly higher (6.35% vs. 31.06%) (32/504 vs. 41/132) (χ² = 62.867, P < 0.001). Follow up showed that, for 52 fetuses with abnormal CMA results, 51 couples have opted induced labor, whilst 1 was delivered at full term with normal growth and development. Of the 434 fetuses with normal CMA results, 377 were delivered at full term (6 had developmental delay), and 57 couples had opted induced labor. The rate of adverse pregnancy outcome for non-isolated CNS abnormal fetuses was significantly higher than that of isolated CNS abnormal fetuses (26.56% vs. 10.54%) (17/64 vs. 39/370) (χ² = 12.463, P < 0.001).
CONCLUSION
Fetuses with CNS anomaly should be tested with CMA to determine the genetic cause. Most fetuses with negative CMA result have a good prognosis, but there is still a possibility for a abnormal neurological phenotype. Fetuses with CNS abnormalities in conjunct with other structural abnormalities are at increased risk for adverse pregnancy outcomes.
Female
;
Pregnancy
;
Humans
;
Holoprosencephaly
;
Prenatal Diagnosis/methods*
;
Central Nervous System
;
Fetus/abnormalities*
;
Nervous System Malformations/genetics*
;
Microarray Analysis
;
Central Nervous System Diseases
;
Cysts
;
Chromosome Aberrations
;
Ultrasonography, Prenatal/methods*

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