1
|
Raykhel I, Ronkainen VP, Myllyharju J, Manninen A. HIF2α-dependent Dock4/Rac1-signaling regulates formation of adherens junctions and cell polarity in normoxia. Sci Rep 2024; 14:12153. [PMID: 38802496 PMCID: PMC11130225 DOI: 10.1038/s41598-024-62955-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 05/23/2024] [Indexed: 05/29/2024] Open
Abstract
Hypoxia-inducible factors (HIF) 1 and 2 regulate similar but distinct sets of target genes. Although HIFs are best known for their roles in mediating the hypoxia response accumulating evidence suggests that under certain conditions HIFs, particularly HIF2, may function also under normoxic conditions. Here we report that HIF2α functions under normoxic conditions in kidney epithelial cells to regulate formation of adherens junctions. HIF2α expression was required to induce Dock4/Rac1/Pak1-signaling mediating stability and compaction of E-cadherin at nascent adherens junctions. Impaired adherens junction formation in HIF2α- or Dock4-deficient cells led to aberrant cyst morphogenesis in 3D kidney epithelial cell cultures. Taken together, we show that HIF2α functions in normoxia to regulate epithelial morphogenesis.
Collapse
Affiliation(s)
- I Raykhel
- Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
- Extracellular Matrix and Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - V-P Ronkainen
- Extracellular Matrix and Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - J Myllyharju
- Extracellular Matrix and Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland.
| | - A Manninen
- Disease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland.
| |
Collapse
|
2
|
Lu LF, Li ZC, Zhang C, Chen DD, Han KJ, Zhou XY, Wang XL, Li XY, Zhou L, Li S. Zebrafish TMEM47 is an effective blocker of IFN production during RNA and DNA virus infection. J Virol 2023; 97:e0143423. [PMID: 37882518 PMCID: PMC10688382 DOI: 10.1128/jvi.01434-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 09/25/2023] [Indexed: 10/27/2023] Open
Abstract
IMPORTANCE Mitochondrial antiviral signaling protein (MAVS) and stimulator of interferon (IFN) genes (STING) are key adaptor proteins required for innate immune responses to RNA and DNA virus infection. Here, we show that zebrafish transmembrane protein 47 (TMEM47) plays a critical role in regulating MAVS- and STING-triggered IFN production in a negative feedback manner. TMEM47 interacted with MAVS and STING for autophagic degradation, and ATG5 was essential for this process. These findings suggest the inhibitory function of TMEM47 on MAVS- and STING-mediated signaling responses during RNA and DNA virus infection.
Collapse
Affiliation(s)
- Long-Feng Lu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhuo-Cong Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Can Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Dan-Dan Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Ke-Jia Han
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Xiao-Yu Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xue-Li Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Xi-Yin Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Hubei Hongshan Laboratory, the Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
| | - Li Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Hubei Hongshan Laboratory, the Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
| | - Shun Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
3
|
Guo M, Shen D, Su Y, Xu J, Zhao S, Zhang W, Wang Y, Jiang W, Wang J, Geng X, Ding X, Xu X. Syndecan-1 shedding destroys epithelial adherens junctions through STAT3 after renal ischemia/reperfusion injury. iScience 2023; 26:108211. [PMID: 37942007 PMCID: PMC10628745 DOI: 10.1016/j.isci.2023.108211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/22/2023] [Accepted: 10/11/2023] [Indexed: 11/10/2023] Open
Abstract
Adherens junctions between tubular epithelial cells are disrupted in renal ischemia/reperfusion (I/R) injury. Syndecan-1 (SDC-1) is involved in maintaining cell morphology. We aimed to study the role of SDC-1 shedding induced by renal I/R in the destruction of intracellular adherens junctions. We found that SDC-1 shedding was increased while the expression of E-cadherin was decreased. This observation was accompanied by the activation of STAT3 in the kidneys. Inhibiting the shedding of SDC-1 induced by I/R could alleviate this effect. Mild renal I/R could induce more severe renal injury, lower E-cadherin expression, damaged cell junctions, and activated STAT3 in knockout mice with the tubule-specific deletion of SDC-1 mice. The results in vitro were consistent with those in vivo. Inhibiting the shedding of SDC-1 could alleviate the decreased expression of E-cadherin and damage of cell adherens junctions through inhibiting the activation of STAT3 during ischemic acute kidney injury.
Collapse
Affiliation(s)
- Man Guo
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Daoqi Shen
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Yiqi Su
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jiarui Xu
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Shuan Zhao
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Weidong Zhang
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Yaqiong Wang
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Wuhua Jiang
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jialin Wang
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Xuemei Geng
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Xiaoqiang Ding
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Xialian Xu
- Division of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Medical Center of Kidney Disease, Shanghai, China
- Shanghai Institute of Kidney and Dialysis, Shanghai, China
- Key Laboratory of Kidney and Blood Purification, Shanghai, China
- Hemodialysis quality control center of Shanghai, Shanghai, China
| |
Collapse
|
4
|
Van Doren VE, Smith SA, Hu YJ, Tharp G, Bosinger S, Ackerley CG, Murray PM, Amara RR, Amancha PK, Arthur RA, Johnston HR, Kelley CF. HIV, asymptomatic STI, and the rectal mucosal immune environment among young men who have sex with men. PLoS Pathog 2023; 19:e1011219. [PMID: 37253061 PMCID: PMC10256205 DOI: 10.1371/journal.ppat.1011219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/09/2023] [Accepted: 05/10/2023] [Indexed: 06/01/2023] Open
Abstract
Young men who have sex with men (YMSM) are disproportionately affected by HIV and bacterial sexually transmitted infections (STI) including gonorrhea, chlamydia, and syphilis; yet research into the immunologic effects of these infections is typically pursued in siloes. Here, we employed a syndemic approach to understand potential interactions of these infections on the rectal mucosal immune environment among YMSM. We enrolled YMSM aged 18-29 years with and without HIV and/or asymptomatic bacterial STI and collected blood, rectal secretions, and rectal tissue biopsies. YMSM with HIV were on suppressive antiretroviral therapy (ART) with preserved blood CD4 cell counts. We defined 7 innate and 19 adaptive immune cell subsets by flow cytometry, the rectal mucosal transcriptome by RNAseq, and the rectal mucosal microbiome by 16S rRNA sequencing and examined the effects of HIV and STI and their interactions. We measured tissue HIV RNA viral loads among YMSM with HIV and HIV replication in rectal explant challenge experiments among YMSM without HIV. HIV, but not asymptomatic STI, was associated with profound alterations in the cellular composition of the rectal mucosa. We did not detect a difference in the microbiome composition associated with HIV, but asymptomatic bacterial STI was associated with a higher probability of presence of potentially pathogenic taxa. When examining the rectal mucosal transcriptome, there was evidence of statistical interaction; asymptomatic bacterial STI was associated with upregulation of numerous inflammatory genes and enrichment for immune response pathways among YMSM with HIV, but not YMSM without HIV. Asymptomatic bacterial STI was not associated with differences in tissue HIV RNA viral loads or in HIV replication in explant challenge experiments. Our results suggest that asymptomatic bacterial STI may contribute to inflammation particularly among YMSM with HIV, and that future research should examine potential harms and interventions to reduce the health impact of these syndemic infections.
Collapse
Affiliation(s)
- Vanessa E. Van Doren
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - S. Abigail Smith
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Yi-Juan Hu
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Gregory Tharp
- Emory National Primate Research Center, Emory University, Atlanta, Georgia, United States of America
| | - Steven Bosinger
- Emory National Primate Research Center, Emory University, Atlanta, Georgia, United States of America
- Department of Microbiology and Immunology, Emory University, Atlanta, Georgia, United States of America
| | - Cassie G. Ackerley
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Phillip M. Murray
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Rama R. Amara
- Emory National Primate Research Center, Emory University, Atlanta, Georgia, United States of America
- Department of Microbiology and Immunology, Emory University, Atlanta, Georgia, United States of America
| | - Praveen K. Amancha
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Robert A. Arthur
- Emory Integrated Computational Core, Emory University, Atlanta, Georgia, United States of America
| | - H. Richard Johnston
- Emory Integrated Computational Core, Emory University, Atlanta, Georgia, United States of America
| | - Colleen F. Kelley
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Grady Health System, Atlanta, Georgia, United States of America
| |
Collapse
|
5
|
Naturale VF, Pickett MA, Feldman JL. Context matters: Lessons in epithelial polarity from the Caenorhabditis elegans intestine and other tissues. Curr Top Dev Biol 2023; 154:37-71. [PMID: 37100523 DOI: 10.1016/bs.ctdb.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Epithelia are tissues with diverse morphologies and functions across metazoans, ranging from vast cell sheets encasing internal organs to internal tubes facilitating nutrient uptake, all of which require establishment of apical-basolateral polarity axes. While all epithelia tend to polarize the same components, how these components are deployed to drive polarization is largely context-dependent and likely shaped by tissue-specific differences in development and ultimate functions of polarizing primordia. The nematode Caenorhabditis elegans (C. elegans) offers exceptional imaging and genetic tools and possesses unique epithelia with well-described origins and roles, making it an excellent model to investigate polarity mechanisms. In this review, we highlight the interplay between epithelial polarization, development, and function by describing symmetry breaking and polarity establishment in a particularly well-characterized epithelium, the C. elegans intestine. We compare intestinal polarization to polarity programs in two other C. elegans epithelia, the pharynx and epidermis, correlating divergent mechanisms with tissue-specific differences in geometry, embryonic environment, and function. Together, we emphasize the importance of investigating polarization mechanisms against the backdrop of tissue-specific contexts, while also underscoring the benefits of cross-tissue comparisons of polarity.
Collapse
Affiliation(s)
- Victor F Naturale
- Department of Biology, Stanford University, Stanford, CA, United States
| | - Melissa A Pickett
- Department of Biology, Stanford University, Stanford, CA, United States; Department of Biological Sciences, San José State University, San José, CA, United States
| | - Jessica L Feldman
- Department of Biology, Stanford University, Stanford, CA, United States.
| |
Collapse
|
6
|
Hecker M, Fitzner B, Putscher E, Schwartz M, Winkelmann A, Meister S, Dudesek A, Koczan D, Lorenz P, Boxberger N, Zettl UK. Implication of genetic variants in primary microRNA processing sites in the risk of multiple sclerosis. EBioMedicine 2022; 80:104052. [PMID: 35561450 PMCID: PMC9111935 DOI: 10.1016/j.ebiom.2022.104052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 12/01/2022] Open
Abstract
Background Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system with a well-established genetic contribution to susceptibility. Over 200 genetic regions have been linked to the inherited risk of developing MS, but the disease-causing variants and their functional effects at the molecular level are still largely unresolved. We hypothesised that MS-associated single-nucleotide polymorphisms (SNPs) affect the recognition and enzymatic cleavage of primary microRNAs (pri-miRNAs). Methods Our study focused on 11 pri-miRNAs (9 primate-specific) that are encoded in genetic risk loci for MS. The levels of mature miRNAs and potential isoforms (isomiRs) produced from those pri-miRNAs were measured in B cells obtained from the peripheral blood of 63 MS patients and 28 healthy controls. We tested for associations between SNP genotypes and miRNA expression in cis using quantitative trait locus (cis-miR-eQTL) analyses. Genetic effects on miRNA stem-loop processing efficiency were verified using luciferase reporter assays. Potential direct miRNA target genes were identified by transcriptome profiling and computational binding site assessment. Findings Mature miRNAs and isomiRs from hsa-mir-26a-2, hsa-mir-199a-1, hsa-mir-4304, hsa-mir-4423, hsa-mir-4464 and hsa-mir-4492 could be detected in all B-cell samples. When MS patient subgroups were compared with healthy controls, a significant differential expression was observed for miRNAs from the 5’ and 3’ strands of hsa-mir-26a-2 and hsa-mir-199a-1. The cis-miR-eQTL analyses and reporter assays pointed to a slightly more efficient Drosha-mediated processing of hsa-mir-199a-1 when the MS risk allele T of SNP rs1005039 is present. On the other hand, the MS risk allele A of SNP rs817478, which substitutes the first C in a CNNC sequence motif, was found to cause a markedly lower efficiency in the processing of hsa-mir-4423. Overexpression of hsa-mir-199a-1 inhibited the expression of 60 protein-coding genes, including IRAK2, MIF, TNFRSF12A and TRAF1. The only target gene identified for hsa-mir-4423 was TMEM47. Interpretation We found that MS-associated SNPs in sequence determinants of pri-miRNA processing can affect the expression of mature miRNAs. Our findings complement the existing literature on the dysregulation of miRNAs in MS. Further studies on the maturation and function of miRNAs in different cell types and tissues may help to gain a more detailed functional understanding of the genetic basis of MS. Funding This study was funded by the Rostock University Medical Center (FORUN program, grant: 889002), Sanofi Genzyme (grant: GZ-2016-11560) and Merck Serono GmbH (Darmstadt, Germany, an affiliate of Merck KGaA, CrossRef Funder ID: 10.13039/100009945, grant: 4501860307). NB was supported by the Stiftung der Deutschen Wirtschaft (sdw) and the FAZIT foundation. EP was supported by the Landesgraduiertenförderung Mecklenburg-Vorpommern.
Collapse
|
7
|
Curcumin and Ethanol Effects in Trembler-J Schwann Cell Culture. Biomolecules 2022; 12:biom12040515. [PMID: 35454103 PMCID: PMC9025918 DOI: 10.3390/biom12040515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 02/04/2023] Open
Abstract
Charcot-Marie-Tooth (CMT) syndrome is the most common progressive human motor and sensory peripheral neuropathy. CMT type 1E is a demyelinating neuropathy affecting Schwann cells due to peripheral-myelin-protein-22 (PMP22) mutations, modelized by Trembler-J mice. Curcumin, a natural polyphenol compound obtained from turmeric (Curcuma longa), exhibits dose- and time-varying antitumor, antioxidant and neuroprotective properties, however, the neurotherapeutic actions of curcumin remain elusive. Here, we propose curcumin as a possible natural treatment capable of enhancing cellular detoxification mechanisms, resulting in an improvement of the neurodegenerative Trembler-J phenotype. Using a refined method for obtaining enriched Schwann cell cultures, we evaluated the neurotherapeutic action of low dose curcumin treatment on the PMP22 expression, and on the chaperones and autophagy/mammalian target of rapamycin (mTOR) pathways in Trembler-J and wild-type genotypes. In wild-type Schwann cells, the action of curcumin resulted in strong stimulation of the chaperone and macroautophagy pathway, whereas the modulation of ribophagy showed a mild effect. However, despite the promising neuroprotective effects for the treatment of neurological diseases, we demonstrate that the action of curcumin in Trembler-J Schwann cells could be impaired due to the irreversible impact of ethanol used as a common curcumin vehicle necessary for administration. These results contribute to expanding our still limited understanding of PMP22 biology in neurobiology and expose the intrinsic lability of the neurodegenerative Trembler-J genotype. Furthermore, they unravel interesting physiological mechanisms of cellular resilience relevant to the pharmacological treatment of the neurodegenerative Tremble J phenotype with curcumin and ethanol. We conclude that the analysis of the effects of the vehicle itself is an essential and inescapable step to comprehensibly assess the effects and full potential of curcumin treatment for therapeutic purposes.
Collapse
|
8
|
Li T, Wang T, Yan L, Ma C. Identification of potential novel biomarkers for abdominal aortic aneurysm based on comprehensive analysis of circRNA-miRNA-mRNA networks. Exp Ther Med 2021; 22:1468. [PMID: 34737808 PMCID: PMC8561771 DOI: 10.3892/etm.2021.10903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/08/2021] [Indexed: 01/10/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a life-threatening disorder and, therefore, investigation into its underlying mechanisms in light of the competing endogenous RNAs (ceRNAs) hypothesis has gradually increased. However, there is still lacking systematic analysis on AAA-associated circular RNA (circRNA)-microRNA (miRNA/miR)-messenger RNA (mRNA) interaction networks based on bioinformatics methods. The present study attempted to identify novel molecular biomarkers for AAA by profiling circRNA-miRNA-mRNA networks using three public microarray datasets (GSE7084, GSE57691 and GSE144431). A total of 135 differentially expressed genes (DEGs) and 142 differentially expressed circRNAs were detected using the limma R package with the statistical threshold of P<0.05 and |log2fold change (FC)| >1.5. In addition, 12 circRNA-miRNA-mRNA axes were identified to construct upregulated and downregulated ceRNA networks using Cytoscape. Based on molecular complex detection algorithm, (hsa_circ_0057691/0092108/0006845/0082182)- miR-330-5p-calponin 1 (CNN1) and (hsa_circ_0061482/0011450/0008351/0004121)-miR-326-CD8a molecule (CD8A) were recognized as the center axes in ceRNA networks. Reverse transcription-quantitative PCR results verified the significant downregulation of CNN1 and upregulation of CD8A in human AAA tissues (P<0.05). In addition, four upregulated circRNA/mRNA axes, and five downregulated circRNA/mRNA axes were revealed to have possible biological functions in the pathogenesis of AAA using the Cytoscape software. Receiver operating characteristic analysis demonstrated the accuracy of these nine DEGs involved in these axes for AAA diagnosis with area under the curves >0.80. The present study revealed novel circRNA-miRNA-mRNA networks associated with AAA, especially for CNN1 and CD8A axes with the potential function of ‘focal adhesion’ and ‘immune response’, respectively. Overall, the present findings may provide evidence to explore the implicated ceRNAs in the molecular mechanisms and as novel biomarkers for AAA.
Collapse
Affiliation(s)
- Tan Li
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Tianlong Wang
- The First Clinical College of China Medical University, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Lirong Yan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| |
Collapse
|
9
|
Ng KTP, Yeung OWH, Liu J, Li CX, Liu H, Liu XB, Qi X, Ma YY, Lam YF, Lau MY, Qiu WQ, Shiu HC, Lai MK, Lo CM, Man K. Clinical significance and functional role of transmembrane protein 47 (TMEM47) in chemoresistance of hepatocellular carcinoma. Int J Oncol 2020; 57:956-966. [PMID: 32945373 PMCID: PMC7473756 DOI: 10.3892/ijo.2020.5104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Chemoresistance is the main cause of chemotherapy failure in patients with hepatocellular carcinoma (HCC). The gene encoding transmembrane protein 47 (TMEM47) was previously identified to be significantly upregulated in HCC cell lines with acquired chemoresistance. The aim of the present study was to characterize the clinical significance and function of TMEM47 in HCC chemoresistance. The results demonstrated that the TMEM47 expression levels in the tumors of patients not responding to cisplatin-based transarterial chemoembolization (TACE) treatment was significantly higher compared with those in patients who responded to TACE treatment. Moreover, analyses from clinical samples and HCC cell lines indicated that TMEM47 expression may be upregulated in HCC in response to cisplatin treatment. Furthermore, the TMEM47 mRNA expression levels were positively correlated with the degree of cisplatin resistance of HCC cells. Overexpression of TMEM47 in HCC cells significantly promoted cisplatin resistance. The present study also demonstrated that targeted inhibition of TMEM47 could significantly reduce cisplatin resistance of cisplatin-resistant HCC cells via enhancing caspase-mediated apoptosis. In addition, targeted inhibition of TMEM47 enhanced the sensitivity of cisplatin-resistant cells to cisplatin via suppressing cisplatin-induced activation of the genes involved in drug efflux and metabolism. The present study also validated that TMEM47 expression was significantly correlated with multi-drug resistance-associated protein 1 in patients with HCC who received TACE treatment. In conclusion, the findings of the present study demonstrated that TMEM47 may be a useful biomarker for predicting the response to chemotherapy and a potential therapeutic target for overcoming HCC chemoresistance.
Collapse
Affiliation(s)
- Kevin Tak-Pan Ng
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Oscar Wai-Ho Yeung
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Jiang Liu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Chang Xian Li
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Hui Liu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Xiao Bing Liu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Xiang Qi
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Yuen Yuen Ma
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Yin Fan Lam
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Matthew Yh Lau
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Wen Qi Qiu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Hoi Chung Shiu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Man Kit Lai
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Chung Mau Lo
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Kwan Man
- Department of Surgery, The University of Hong Kong Shenzhen Hospital and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| |
Collapse
|
10
|
He C, Zhang Y, Jiang H, Niu X, Qi R, Gao X. Identification of differentially expressed methylated genes in melanoma versus nevi using bioinformatics methods. PeerJ 2020; 8:e9273. [PMID: 32547879 PMCID: PMC7275674 DOI: 10.7717/peerj.9273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 05/11/2020] [Indexed: 12/15/2022] Open
Abstract
Background Melanoma is a highly invasive malignant skin tumor. While melanoma may share some similarities with that of melanocytic nevi, there also exist a number of distinct differences between these conditions. An analysis of these differences may provide a means to more effectively evaluate the etiology and pathogenesis of melanoma. In particular, differences in aberrant methylation expression may prove to represent a critical distinction. Methods Data from gene expression datasets (GSE3189 and GSE46517) and gene methylation datasets (GSE86355 and GSE120878) were downloaded from the GEO database. GEO2R was used to obtain differentially expressed genes (DEGs) and differentially methylation genes (DMGs). Function and pathway enrichment of selected genes were performed using the DAVID database. A protein-protein interaction (PPI) network was constructed by STRING while its visualization was achieved with use of cytoscape. Primary melanoma samples from TCGA were used to identify significant survival genes. Results There was a total of 199 genes in the hypermethylation-low expression group, while 136 genes in the hypomethylation-high expression group were identified. The former were enriched in the biological processes of transcription regulation, RNA metabolism and regulation of cell proliferation. The later were highly involved in cell cycle regulation. 13 genes were screened out after survival analysis and included: ISG20, DTL, TRPV2, PLOD3, KIF3C, DLGAP4, PI4K2A, WIPI1, SHANK2, SLC16A10, GSTA4O, LFML2A and TMEM47. Conclusion These findings reveal some of the methylated differentially expressed genes and pathways that exist between melonoma and melanocytic nevi. Moreover, we have identified some critical genes that may help to improve the diagnosis and treatment of melanoma.
Collapse
Affiliation(s)
- Congcong He
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, Shenyang, Liaoning, China
| | - Yujing Zhang
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, Shenyang, Liaoning, China
| | - Hanghang Jiang
- Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xueli Niu
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, Shenyang, Liaoning, China
| | - Ruiqun Qi
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, Shenyang, Liaoning, China
| | - Xinghua Gao
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, Shenyang, Liaoning, China
| |
Collapse
|
11
|
Wu Z, Blessing NA, Simske JS, Bruggeman LA. Fyn-binding protein ADAP supports actin organization in podocytes. Physiol Rep 2018; 5. [PMID: 29192064 PMCID: PMC5727265 DOI: 10.14814/phy2.13483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 09/29/2017] [Indexed: 01/19/2023] Open
Abstract
The renal podocyte is central to the filtration function of the kidney that is dependent on maintaining both highly organized, branched cell structures forming foot processes, and a unique cell-cell junction, the slit diaphragm. Our recent studies investigating the developmental formation of the slit diaphragm identified a novel claudin family tetraspannin, TM4SF10, which is a binding partner for ADAP (also known as Fyn binding protein Fyb). To investigate the role of ADAP in podocyte function in relation to Fyn and TM4SF10, we examined ADAP knockout (KO) mice and podocytes. ADAP KO mice developed glomerular pathology that began as hyalinosis and progressed to glomerulosclerosis, with aged male animals developing low levels of albuminuria. Podocyte cell lines established from the KO mice had slower attachment kinetics compared to wild-type cells, although this did not affect the total number of attached cells nor the ability to form focal contacts. After attachment, the ADAP KO cells did not attain typical podocyte morphology, lacking the elaborate cell protrusions typical of wild-type podocytes, with the actin cytoskeleton forming circumferential stress fibers. The absence of ADAP did not alter Fyn levels nor were there differences between KO and wild-type podocytes in the reduction of Fyn activating phosphorylation events with puromycin aminonucleoside treatment. In the setting of endogenous TM4SF10 overexpression, the absence of ADAP altered the formation of cell-cell contacts containing TM4SF10. These studies suggest ADAP does not alter Fyn activity in podocytes, but appears to mediate downstream effects of Fyn controlled by TM4SF10 involving actin cytoskeleton organization.
Collapse
Affiliation(s)
- Zhenzhen Wu
- Department of Medicine and Rammelkamp Center for Education and Research, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Natalya A Blessing
- Department of Medicine and Rammelkamp Center for Education and Research, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Jeffrey S Simske
- Department of Medicine and Rammelkamp Center for Education and Research, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Leslie A Bruggeman
- Department of Medicine and Rammelkamp Center for Education and Research, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| |
Collapse
|