Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-14DOI: 10.1007/s13258-024-01491-0
Li Zeng, Jideng Ma, Tiantian Wei, Hao Wang, Guitao Yang, Chongxiang Han, Tao Zhu, Haoming Tian, Min Zhang
{"title":"The effect of canagliflozin on gut microbiota and metabolites in type 2 diabetic mice.","authors":"Li Zeng, Jideng Ma, Tiantian Wei, Hao Wang, Guitao Yang, Chongxiang Han, Tao Zhu, Haoming Tian, Min Zhang","doi":"10.1007/s13258-024-01491-0","DOIUrl":"10.1007/s13258-024-01491-0","url":null,"abstract":"<p><strong>Background: </strong>Sodium glucose cotransporter 2 inhibitor (SGLT2i) represent a new type of hypoglycemic medicine that can cause massive loss of glucose from the urine, which have several benefits of reducing body weight and improving the prognosis of cardiovascular and kidney diseases. Although they are oral medicated hypoglycemic agents, their effects on the gut microbiome and function have been unclear.</p><p><strong>Objective: </strong>In order to describe the effects of canagliflozin on intestinal flora and metabolites, diabetic mice were randomized to receive canagliflozin or isoconcentration carboxymethylcellulose sodium by gavage for 8 weeks. Feces were collected for 16 S rRNA gene and LC-MS/MS analysis and enriched metabolic pathways through Kyoto Encyclopedia of Genes and Genomes (KEGG). Liver, muscle, intestinal, fat were collected for qRT-PCR according to KEGG enriched metabolic pathways.</p><p><strong>Results: </strong>Our results showed that canagliflozin significantly increased GLP-1 level and impacted on the composition of gut microbiota and metabolites. It mainly increased Muribaculum, Ruminococcaceae_UCG_014, Lachnospiraceae-UCG-001, decreased ursodeoxycholic acids (UDCA) and hyodeoxycholic acids (HDCA), and increased fatty acids metabolites in feces.</p><p><strong>Conclusion: </strong>In conclusion, we analyzed the changes of intestinal microbial composition and metabolites in diabetic mice after canagliflozin intervention and found that canagliflozin influenced intestinal fatty acid and bile acid (BA) metabolism. This study will provide reference for subsequent SGLT2i and intestinal related research.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140131217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-14DOI: 10.1007/s13258-024-01507-9
Martin Šimon, Špela Mikec, Santosh S Atanur, Janez Konc, Nicholas M Morton, Simon Horvat, Tanja Kunej
{"title":"Whole genome sequencing of mouse lines divergently selected for fatness (FLI) and leanness (FHI) revealed several genetic variants as candidates for novel obesity genes.","authors":"Martin Šimon, Špela Mikec, Santosh S Atanur, Janez Konc, Nicholas M Morton, Simon Horvat, Tanja Kunej","doi":"10.1007/s13258-024-01507-9","DOIUrl":"10.1007/s13258-024-01507-9","url":null,"abstract":"<p><strong>Background: </strong>Analysing genomes of animal model organisms is widely used for understanding the genetic basis of complex traits and diseases, such as obesity, for which only a few mouse models exist, however, without their lean counterparts.</p><p><strong>Objective: </strong>To analyse genetic differences in the unique mouse models of polygenic obesity (Fat line) and leanness (Lean line) originating from the same base population and established by divergent selection over more than 60 generations.</p><p><strong>Methods: </strong>Genetic variability was analysed using WGS. Variants were identified with GATK and annotated with Ensembl VEP. g.Profiler, WebGestalt, and KEGG were used for GO and pathway enrichment analysis. miRNA seed regions were obtained with miRPathDB 2.0, LncRRIsearch was used to predict targets of identified lncRNAs, and genes influencing adipose tissue amount were searched using the IMPC database.</p><p><strong>Results: </strong>WGS analysis revealed 6.3 million SNPs, 1.3 million were new. Thousands of potentially impactful SNPs were identified, including within 24 genes related to adipose tissue amount. SNP density was highest in pseudogenes and regulatory RNAs. The Lean line carries SNP rs248726381 in the seed region of mmu-miR-3086-3p, which may affect fatty acid metabolism. KEGG analysis showed deleterious missense variants in immune response and diabetes genes, with food perception pathways being most enriched. Gene prioritisation considering SNP GERP scores, variant consequences, and allele comparison with other mouse lines identified seven novel obesity candidate genes: 4930441H08Rik, Aff3, Fam237b, Gm36633, Pced1a, Tecrl, and Zfp536.</p><p><strong>Conclusion: </strong>WGS revealed many genetic differences between the lines that accumulated over the selection period, including variants with potential negative impacts on gene function. Given the increasing availability of mouse strains and genetic polymorphism catalogues, the study is a valuable resource for researchers to study obesity.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11024027/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140131218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-27DOI: 10.1007/s13258-024-01504-y
Hongyan Luo, Lirong Yang, Guoqing Zhang, Xi Bao, Danna Ma, Bo Li, Li Cao, Shilu Cao, Shunyao Liu, Li Bao, Jing E, Yali Zheng
{"title":"Whole transcriptome mapping reveals the lncRNA regulatory network of TFP5 treatment in diabetic nephropathy.","authors":"Hongyan Luo, Lirong Yang, Guoqing Zhang, Xi Bao, Danna Ma, Bo Li, Li Cao, Shilu Cao, Shunyao Liu, Li Bao, Jing E, Yali Zheng","doi":"10.1007/s13258-024-01504-y","DOIUrl":"10.1007/s13258-024-01504-y","url":null,"abstract":"<p><strong>Background: </strong>TFP5 is a Cdk5 inhibitor peptide, which could restore insulin production. However, the role of TFP5 in diabetic nephropathy (DN) is still unclear.</p><p><strong>Objective: </strong>This study aims to characterize the transcriptome profiles of mRNA and lncRNA in TFP5-treated DN mice to mine key lncRNAs associated with TFP5 efficacy.</p><p><strong>Methods: </strong>We evaluated the role of TFP5 in DN pathology and performed RNA sequencing in C57BL/6J control mice, C57BL/6J db/db model mice, and TFP5 treatment C57BL/6J db/db model mice. The differentially expressed lncRNAs (DElncRNAs) and mRNAs (DEmRNAs) were analyzed. WGCNA was used to screen hub-gene of TFP5 in treatment of DN.</p><p><strong>Results: </strong>Our results showed that TFP5 therapy ameliorated renal tubular injury in DN mice. In addition, compared with the control group, the expression profile of lncRNAs in the model group was significantly disordered, while TFP5 alleviated the abnormal expression of lncRNAs. A total of 67 DElncRNAs shared among the three groups, 39 DElncRNAs showed a trend of increasing in the DN group and decreasing after TFP treatment, while the remaining 28 showed the opposite trend. DElncRNAs were enriched in glycosphingolipid biosynthesis signaling pathways, NF-κB signaling pathways, and complement activation signaling pathways. There were 1028 up-regulated and 1117 down-regulated DEmRNAs in the model group compared to control group, and 123 up-regulated and 153 down-regulated DEmRNAs in the TFP5 group compared to the model group. The DEmRNAs were involved in PPAR and MAPK signaling pathway. We confirmed that MSTRG.28304.1 is a key DElncRNA for TFP5 treatment of DN. TFP5 ameliorated DN maybe by inhibiting MSTRG.28304.1 through regulating the insulin resistance and PPAR signaling pathway. The qRT-PCR results confirmed the reliability of the sequencing data through verifying the expression of ENSMUST00000211209, MSTRG.31814.5, MSTRG.28304.1, and MSTRG.45642.14.</p><p><strong>Conclusion: </strong>Overall, the present study provides novel insights into molecular mechanisms of TFP5 treatment in DN.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140305335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-20DOI: 10.1007/s13258-024-01509-7
Chul Hee Choi, Seyoung Mun, Man Hwan Oh
{"title":"Identification and characterization of Acinetobacter nosocomialis BfmRS, two-component regulatory system, essential for biofilm development.","authors":"Chul Hee Choi, Seyoung Mun, Man Hwan Oh","doi":"10.1007/s13258-024-01509-7","DOIUrl":"10.1007/s13258-024-01509-7","url":null,"abstract":"<p><strong>Background: </strong>Biofilm development by bacteria is considered to be an essential stage in the bacterial infection. Acinetobacter nosocomialis is an important nosocomial pathogen causing a variety of human infections. However, characteristics and specific determinants of biofilm development have been poorly characterized in A. nosocomialis.</p><p><strong>Objective: </strong>The aim of this study was to investigate the factors involved in the biofilm development by A. nosocomialis.</p><p><strong>Methods: </strong>Library of random transposon mutants was constructed using the Tn5 mutagenesis. The mutant strains, in which the ability of biofilm formation was significantly impaired, were screened by gentian violet staining. The roles of BfmR and BfmS were determined by constructing a bfmR and bfmS deletion mutant and analyzing the effects of bfmR and bfmS mutation on the biofilm development and motility of A. nosocomialis.</p><p><strong>Results: </strong>We identified a biofilm-defective mutant in which a transposon insertion inactivated an open reading frame encoding the BfmR in a two-component regulatory system consisting of BfmR and BfmS. The bfmR mutant revealed a significant reduction in biofilm formation and motility compared to wild-type strain. Deficiency in the biofilm formation and motility of the bfmR mutant was restored by single copy bfmR complementation. In contrast, the bfmS mutant had no effect on biofilm formation.</p><p><strong>Conclusion: </strong>A. nosocomialis has a two-component regulatory system, BfmRS. BfmR is a response regulator required for the initial attachment and maturation of biofilm during the biofilm development as well as the bacterial growth. BfmR could be a potential drug target for A. nosocomialis infection.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140174234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-02-16DOI: 10.1007/s13258-024-01502-0
Cüneyd Yavaş, Mustafa Doğan, Recep Eröz, Kübra Türegün
{"title":"A rare TNNT1 gene variant causing creatine kinase elevation in nemaline myopathy: c.271_273del (p.Lys91del).","authors":"Cüneyd Yavaş, Mustafa Doğan, Recep Eröz, Kübra Türegün","doi":"10.1007/s13258-024-01502-0","DOIUrl":"10.1007/s13258-024-01502-0","url":null,"abstract":"<p><strong>Background: </strong>Nemaline Myopathy (NM) is a rare genetic disorder that affects muscle function and is characterized by the presence of nemaline rods in muscle fibers. These rods are abnormal structures that interfere with muscle contraction and can cause muscle weakness, respiratory distress, and other complications. NM is caused by variants in several genes, including TNNT1, which encodes the protein troponin T1. NM is inherited in an autosomal recessive pattern. The prevalence of heterozygous TNNT1 variants has been reported to be 1/152,000, indicating that the disease is relatively rare.</p><p><strong>Objective: </strong>Investigation of TNNT1 gene variants that may cause cretin kinase elevation.</p><p><strong>Methods: </strong>Detailed family histories and clinical data were recorded. Whole exome sequencing was performed and family segregation was done by Sanger sequencing.</p><p><strong>Results: </strong>In this study, we report a 5-year-old girl with a novel variant recessive congenital TNNT1 myopathy. The patient had a novel homozygous (c.271_273del) deletion in the TNNT1 gene that is associated with creatine kinase elevation, which is a marker of muscle damage.</p><p><strong>Conclusion: </strong>This case expands the phenotypic spectrum of TNNT1 myopathy and highlights the importance of genetic testing and counseling for families affected by this rare disorder. In this study provides valuable insights into the genetic basis of NM and highlights the importance of early diagnosis and management for patients with this rare disorder. Further research is needed to better understand the pathophysiology of TNNT1 myopathy and to develop effective treatments for this debilitating condition.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139740804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-12DOI: 10.1007/s13258-024-01508-8
Xiu Feng, Shengnan He, Ying Chen, Liang Zhang
{"title":"Deubiquitinase BRCC3 promotes the migration, invasion and EMT progression of colon adenocarcinoma by stabilizing MET expression.","authors":"Xiu Feng, Shengnan He, Ying Chen, Liang Zhang","doi":"10.1007/s13258-024-01508-8","DOIUrl":"10.1007/s13258-024-01508-8","url":null,"abstract":"<p><strong>Background: </strong>Breast cancer type 1 susceptibility protein/breast cancer type 2 susceptibility protein-containing complex subunit 3 (BRCC3), a deubiquitinase (DUBs), is overexpressed in various cancers. However, the underlying biological roles of BRCC3 in adenocarcinoma colon (COAD) have yet to be decrypted.</p><p><strong>Objective: </strong>In this work, we explored the potential biological function of BRCC3 in the natural process of COAD cells.</p><p><strong>Methods: </strong>The expression levels of BRCC3 in COAD tissues and cell lines were investigated via quantitative real time polymerase chain reaction and western blotting analyses. Meanwhile, short hairpin RNAs targeting BRCC3 (sh-BRCC3) or mesenchymal-epithelial transition factor (MET) (sh-MET) were used to investigate the biological function, including proliferation, apoptosis, migration, invasion, and epithelial-mesenchymal transition (EMT) progression in COAD cells. Furthermore, the expression levels of EMT-related biomarkers were detected with western blotting analysis. Furthermore, we also performed Co-IP assay to identify the correlation between BRCC3 and MET.</p><p><strong>Results: </strong>BRCC3 expression was increased in COAD tissues and cell lines. ShRNA-mediated downmodulation of BRCC3 in COAD cell lines induced EMT progression. BRCC3 knockdown resulted in decreased migration as well as invasion and increased apoptosis of SW480 and Lovo cells. Besides, MET was regulated by BRCC3 and involved in the migration, invasion, and EMT in SW480 and Lovo cells. Finally, we uncovered that the overexpressed MET reversed the effects of BRCC3 knockdown in COAD cell development.</p><p><strong>Conclusions: </strong>BRCC3 acted as a critical factor in the development of COAD by deubiquitinating and stabilizing MET, which might provide an emerging biomarker for the therapeutic and diagnosis strategy of COAD.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01DOI: 10.1007/s13258-024-01517-7
Yang Yu, ShiYing Li, Jialin Sun, Yu Wang, LiangZhen Xie, Ying Guo, Jia Li, FengJuan Han
{"title":"Overexpression of TRIM44 mediates the NF-κB pathway to promote the progression of ovarian cancer","authors":"Yang Yu, ShiYing Li, Jialin Sun, Yu Wang, LiangZhen Xie, Ying Guo, Jia Li, FengJuan Han","doi":"10.1007/s13258-024-01517-7","DOIUrl":"https://doi.org/10.1007/s13258-024-01517-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background</h3><p>Ovarian cancer (OC) is the second most commonly seen cancer in the US, and patients with OC are commonly diagnosed in the advanced stage. Research into the molecular mechanisms and potential therapeutic targets of OC is becoming increasingly urgent. In our study, we worked to discover the role of TRIM44 in OC development.</p><h3 data-test=\"abstract-sub-heading\">Objective</h3><p>This study explored whether the overexpression of TRIM44 mediates the NF-kB pathway to promote the progression of OC.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>A TRIM44 overexpression model was constructed in SKOV3 cells, and the proliferation ability of the cells was detected using the CCK-8 assay. The migration healing ability of cells was detected using cell scratch assay. Cell migration and invasion were detected using Transwell nesting. TUNEL was applied to detect apoptosis, and ELISA and western blot were used to detect the expression of NF-κB signaling pathway proteins. The pathological changes of the tumor tissues were observed using HE staining in a mouse ovarian cancer xenograft model. Immunofluorescence double staining, RT-PCR, and western blot were used to determine the expression of relevant factors in tumour tissues.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>TRIM44 overexpression promoted the proliferation, migration, and invasion of SKOV3 cells in vitro and inhibited apoptosis while enhancing the growth of tumours in vivo. TRIM44 regulated the NF-κB signaling pathway.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>TRIM44 overexpression can regulate the NF-κB signaling pathway to promote the progression of OC, and TRIM44 may be a potential therapeutic target for OC.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-01-05DOI: 10.1007/s13258-023-01485-4
Sohee Cho, Eunsoon Shin, Yoon Gi Park, Seung Ho Choi, Eun Kyung Choe, Jung Ho Bae, Jong-Eun Lee, Soong Deok Lee
{"title":"A novel approach of kinship determination based on the physical length of genetically shared regions of chromosomes.","authors":"Sohee Cho, Eunsoon Shin, Yoon Gi Park, Seung Ho Choi, Eun Kyung Choe, Jung Ho Bae, Jong-Eun Lee, Soong Deok Lee","doi":"10.1007/s13258-023-01485-4","DOIUrl":"10.1007/s13258-023-01485-4","url":null,"abstract":"<p><strong>Background: </strong>Determination of genetic relatedness between individuals plays a crucial role in resolving numerous civil cases involving familial relationships and in forensic investigation concerning missing persons. Short tandem repeats (STRs), known for their high degree of DNA polymorphism, have traditionally been the primary choice of DNA markers in genetic testing, but their application for kinships testing is limited to cases involving close kinship. SNPs have emerged as promising supplementary markers for kinship determination. Nevertheless, the challenging remains in discriminating between third-degree or more distant relatives, such as first cousins, using SNPs.</p><p><strong>Objective: </strong>To investigate a kinship analysis method for distant degree of familial relationships using high-density SNP data.</p><p><strong>Methods: </strong>A high-density SNP data from 337 individuals of Korean families using Affymetrix Axiom KORV1.0-96 Array was obtained for this study. SNPs were aligned by chromosomal positions, and identity-by-state (IBS) was determined, and then shared regions as consecutive SNPs with IBS of 1 or 2 were investigated. The physical lengths of these IBS segments were measured and summed them to create an Index, as a measure of kinship.</p><p><strong>Results: </strong>The kinship was determined by the physical length of shared chromosomal regions that are distinguished by each kinship. Using this method, the relationship was able be distinguished up to the fourth degree of kinship, and non-relatives were clearly distinguished from true relatives. We also found a potential for this approach to be used universally, regardless of microarray platforms for SNP genotyping and populations.</p><p><strong>Conclusion: </strong>This method has a potential to determine the different degree of kinship between individuals and to distinguish non-relatives from true relatives, which can be of great help for practical applications in kinship determination.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11024047/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139097720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genes & genomicsPub Date : 2024-05-01Epub Date: 2024-03-09DOI: 10.1007/s13258-024-01506-w
Younwoo Nam, Jiyeon Na, Shi-Xun Ma, Haeun Park, Hyeonwoo Park, Eunmin Lee, Hyerynn Kim, Sang-Min Jang, Han Seok Ko, Sangjune Kim
{"title":"DJ-1 protects cell death from a mitochondrial oxidative stress due to GBA1 deficiency.","authors":"Younwoo Nam, Jiyeon Na, Shi-Xun Ma, Haeun Park, Hyeonwoo Park, Eunmin Lee, Hyerynn Kim, Sang-Min Jang, Han Seok Ko, Sangjune Kim","doi":"10.1007/s13258-024-01506-w","DOIUrl":"10.1007/s13258-024-01506-w","url":null,"abstract":"<p><strong>Background: </strong>GBA1 mutations are the most common genetic risk factor for development of Parkinson's disease (PD). The loss of catalytic activity in GBA1, as well as the reduction of the GBA1 protein in certain cellular compartment, may increase disease progression. However, the mechanisms underlying cellular dysfunction caused by GBA1 deficiency are still mostly unknown.</p><p><strong>Objective: </strong>In this study, we focus on the genetic interaction between GBA1 deficiency and PD-causing genes, such as DJ-1, in mitochondrial dysfunction.</p><p><strong>Methods: </strong>GBA1 knockout (KO) SH-SY5Y cells were used to assess DJ-1 functions against oxidative stress in vitro. The levels of cellular reactive oxygen species were monitored with MitoSOX reagent. The expression of the PARK7 gene was analyzed using the quantitative real-time PCR (qRT-PCR). To understand the mechanism underlying DJ-1 upregulation in GBA1 KO cells, we assess ROS levels, antioxidant protein, and cell viability in GBA1 KO cells with treatment of ROS inhibitor N-acetyl-cysteine or miglustat, which is an inhibitor of glucosylceramide synthase. Dopaminergic degeneration was assessed from Gba1 L444P heterozygous mice mated with Park7 knockout mice.</p><p><strong>Results: </strong>We find that DJ-1 is significantly upregulated in GBA1 KO cells. Elevated levels of DJ-1 are attributed to the transcriptional expression of PARK7 mRNA, but not the inhibition of DJ-1 protein degradation. Because DJ-1 expression is highly linked to oxidative stress, we observe cellular reactive oxygen species (ROS) in GBA1 KO cells. Moreover, several antioxidant gene expressions and protein levels are increased in GBA1 KO cells. To this end, GBA1 KO cells are more susceptible to H<sub>2</sub>O<sub>2</sub>-induced cell death. Importantly, there is a significant reduction in dopaminergic neurons in the midbrain from Gba1 L444P heterozygous mice mated with Park7 knockout mice, followed by mild motor dysfunction.</p><p><strong>Conclusion: </strong>Taken together, our results suggest that DJ-1 upregulation due to GBA1 deficiency has a protective role against oxidative stress. It may be supposed that mutations or malfunctions in the DJ-1 protein may have disadvantages in the survival of dopaminergic neurons in the brains of patients harboring GBA1 mutations.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140068329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Genome constitution and evolution of Elymus atratus (Poaceae: Triticeae) inferred from cytogenetic and phylogenetic analysis.","authors":"Lu Tan, Dan-Dan Wu, Chang-Bing Zhang, Yi-Ran Cheng, Li-Na Sha, Xing Fan, Hou-Yang Kang, Yi Wang, Hai-Qin Zhang, Marcial Escudero, Yong-Hong Zhou","doi":"10.1007/s13258-024-01496-9","DOIUrl":"10.1007/s13258-024-01496-9","url":null,"abstract":"<p><strong>Background: </strong>Elymus atratus (Nevski) Hand.-Mazz. is perennial hexaploid wheatgrass. It was assigned to the genus Elymus L. sensu stricto based on morphological characters. Its genome constitution has not been disentangled yet.</p><p><strong>Objective: </strong>To identify the genome constitution and origin of E. atratus.</p><p><strong>Methods: </strong>In this study, genomic in situ hybridization and fluorescence in situ hybridization, and phylogenetic analysis based on the Acc1, DMC1 and matK sequences were performed.</p><p><strong>Results: </strong>Genomic in situ hybridization and fluorescence in situ hybridization results reveal that E. atratus 2n = 6x = 42 is composed of 14 St genome chromosomes, 14 H genome chromosomes, and 14 Y genome chromosomes including two H-Y type translocation chromosomes, suggesting that the genome formula of E. atratus is StStYYHH. The phylogenetic analysis based on Acc1 and DMC1 sequences not only shows that the Y genome originated in a separate diploid, but also suggests that Pseudoroegneria (St), Hordeum (H), and a diploid species with Y genome were the potential donors of E. atratus. Data from chloroplast DNA showed that the maternal donor of E. atratus contains the St genome.</p><p><strong>Conclusion: </strong>Elymus atratus is an allohexaploid species with StYH genome, which may have originated through the hybridization between an allotetraploid Roegneria (StY) species as the maternal donor and a diploid Hordeum (H) species as the paternal donor.</p>","PeriodicalId":12675,"journal":{"name":"Genes & genomics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140305334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}