1
|
Nishioka S, Miyata K, Inoue Y, Aoyama K, Yoshioka Y, Miura N, Yamane M, Honda H, Takagi T. Deciphering mechanisms of UV filter (benzophenone-3)- and high temperature-induced adverse effects in the coral Acropora tenuis, using ecotoxicogenomics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024:176018. [PMID: 39278489 DOI: 10.1016/j.scitotenv.2024.176018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 08/16/2024] [Accepted: 09/02/2024] [Indexed: 09/18/2024]
Abstract
Coral reefs are at risk of bleaching due to various environmental and anthropogenic stressors such as global warming and chemical pollutants. However, there is little understanding of stressor-specific mechanisms that cause coral bleaching. Therefore, conducting accurate ecotoxicological risk assessments and deciphering modes of action of potentially deleterious ultraviolet (UV) filters (sunscreen compounds) are crucial issues. In this study, we evaluated the toxicity and bleaching effect of benzophenone-3 (BP-3), which is widely used in sunscreen products, on the reef-building coral Acropora tenuis. Furthermore, to understand differences in UV filter- and temperature-induced adverse effects, a comparative ecotoxicogenomic approach using RNA-seq was integrated into a toxicity test to clarify differences in gene expression changes induced by BP-3 and heat stress (31 °C). The lethal concentration 50 % (LC50) was calculated as 3.9 mg/L, indicating that the aquatic environmental risk on corals posed by BP-3 was low based on the risk assessment in this study. Differentially expressed genes related to oxidative stress and extracellular matrix organization were involved in coral responses to both BP-3 and heat stress, but their patterns differed. Whereas immune and heat-shock responses were activated in response to heat stress, activation of a drug metabolism pathway and several signal transduction pathways were identified in BP-3 treatment groups. Our study enhances understanding of stress responses in corals induced by UV filters and thermal stress. Using potential gene markers identified in this study for eco-epidemiological surveys of stressed corals, we urgently need to develop effective countermeasures.
Collapse
Affiliation(s)
- Sakiko Nishioka
- R&D Safety Science Research, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi, Japan
| | - Kaede Miyata
- R&D Safety Science Research, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi, Japan
| | - Yasuaki Inoue
- R&D Safety Science Research, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi, Japan
| | - Kako Aoyama
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan; Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Yuki Yoshioka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Natsuko Miura
- Graduate School of Agriculture, Osaka Metropolitan University, Sakai, Osaka, Japan
| | - Masayuki Yamane
- R&D Safety Science Research, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi, Japan
| | - Hiroshi Honda
- R&D Safety Science Research, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi, Japan.
| | - Toshiyuki Takagi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan.
| |
Collapse
|
2
|
Tvaroška I. Glycosylation Modulates the Structure and Functions of Collagen: A Review. Molecules 2024; 29:1417. [PMID: 38611696 PMCID: PMC11012932 DOI: 10.3390/molecules29071417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
Collagens are fundamental constituents of the extracellular matrix and are the most abundant proteins in mammals. Collagens belong to the family of fibrous or fiber-forming proteins that self-assemble into fibrils that define their mechanical properties and biological functions. Up to now, 28 members of the collagen superfamily have been recognized. Collagen biosynthesis occurs in the endoplasmic reticulum, where specific post-translational modification-glycosylation-is also carried out. The glycosylation of collagens is very specific and adds β-d-galactopyranose and β-d-Glcp-(1→2)-d-Galp disaccharide through β-O-linkage to hydroxylysine. Several glycosyltransferases, namely COLGALT1, COLGALT2, LH3, and PGGHG glucosidase, were associated the with glycosylation of collagens, and recently, the crystal structure of LH3 has been solved. Although not fully understood, it is clear that the glycosylation of collagens influences collagen secretion and the alignment of collagen fibrils. A growing body of evidence also associates the glycosylation of collagen with its functions and various human diseases. Recent progress in understanding collagen glycosylation allows for the exploitation of its therapeutic potential and the discovery of new agents. This review will discuss the relevant contributions to understanding the glycosylation of collagens. Then, glycosyltransferases involved in collagen glycosylation, their structure, and catalytic mechanism will be surveyed. Furthermore, the involvement of glycosylation in collagen functions and collagen glycosylation-related diseases will be discussed.
Collapse
Affiliation(s)
- Igor Tvaroška
- Institute of Chemistry, Slovak Academy of Sciences, 845 38 Bratislava, Slovakia
| |
Collapse
|
3
|
He X, Fang J, Gong M, Zhang J, Xie R, Zhao D, Gu Y, Ma L, Pang X, Cui Y. Identification of immune-associated signatures and potential therapeutic targets for pulmonary arterial hypertension. J Cell Mol Med 2023; 27:3864-3877. [PMID: 37753829 PMCID: PMC10718157 DOI: 10.1111/jcmm.17962] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 08/09/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) comprises a heterogeneous group of diseases with diverse aetiologies. It is characterized by increased pulmonary arterial pressure and right ventricular (RV) failure without specific drugs for treatment. Emerging evidence suggests that inflammation and autoimmune disorders are common features across all PAH phenotypes. This provides a novel idea to explore the characteristics of immunological disorders in PAH and identify immune-related genes or biomarkers for specific anti-remodelling regimens. In this study, we integrated three gene expression profiles and performed Gene Ontology (GO) and KEGG pathway analysis. CIBERSORT was utilized to estimate the abundance of tissue-infiltrating immune cells in PAH. The PPI network and machine learning were constructed to identify immune-related hub genes and then evaluate the relationship between hub genes and differential immune cells using ImmucellAI. Additionally, we implemented molecular docking to screen potential small-molecule compounds based on the obtained genes. Our findings demonstrated the density and distribution of infiltrating CD4 T cells in PAH and identified four immune-related genes (ROCK2, ATHL1, HSP90AA1 and ACTR2) as potential targets. We also listed 20 promising molecules, including TDI01953, pemetrexed acid and radotinib, for PAH treatment. These results provide a promising avenue for further research into immunological disorders in PAH and potential novel therapeutic targets.
Collapse
Affiliation(s)
- Xu He
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| | - Jiansong Fang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Mingli Gong
- Department of PharmacyPeking University First HospitalBeijingChina
- School of PharmacyXu Zhou Medical UniversityXuzhouChina
| | - Juqi Zhang
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| | - Ran Xie
- Department of PharmacyPeking University First HospitalBeijingChina
| | - Dai Zhao
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yanlun Gu
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| | - Lingyue Ma
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| | - Xiaocong Pang
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| | - Yimin Cui
- Department of PharmacyPeking University First HospitalBeijingChina
- Institute of Clinical PharmacologyPeking University First HospitalBeijingChina
| |
Collapse
|
4
|
Mattoteia D, Chiapparino A, Fumagalli M, De Marco M, De Giorgi F, Negro L, Pinnola A, Faravelli S, Roscioli T, Scietti L, Forneris F. Identification of Regulatory Molecular "Hot Spots" for LH/PLOD Collagen Glycosyltransferase Activity. Int J Mol Sci 2023; 24:11213. [PMID: 37446392 DOI: 10.3390/ijms241311213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/22/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
Hydroxylysine glycosylations are post-translational modifications (PTMs) essential for the maturation and homeostasis of fibrillar and non-fibrillar collagen molecules. The multifunctional collagen lysyl hydroxylase 3 (LH3/PLOD3) and the collagen galactosyltransferase GLT25D1 are the human enzymes that have been identified as being responsible for the glycosylation of collagen lysines, although a precise description of the contribution of each enzyme to these essential PTMs has not yet been provided in the literature. LH3/PLOD3 is thought to be capable of performing two chemically distinct collagen glycosyltransferase reactions using the same catalytic site: an inverting beta-1,O-galactosylation of hydroxylysines (Gal-T) and a retaining alpha-1,2-glucosylation of galactosyl hydroxylysines (Glc-T). In this work, we have combined indirect luminescence-based assays with direct mass spectrometry-based assays and molecular structure studies to demonstrate that LH3/PLOD3 only has Glc-T activity and that GLT25D1 only has Gal-T activity. Structure-guided mutagenesis confirmed that the Glc-T activity is defined by key residues in the first-shell environment of the glycosyltransferase catalytic site as well as by long-range contributions from residues within the same glycosyltransferase (GT) domain. By solving the molecular structures and characterizing the interactions and solving the molecular structures of human LH3/PLOD3 in complex with different UDP-sugar analogs, we show how these studies could provide insights for LH3/PLOD3 glycosyltransferase inhibitor development. Collectively, our data provide new tools for the direct investigation of collagen hydroxylysine PTMs and a comprehensive overview of the complex network of shapes, charges, and interactions that enable LH3/PLOD3 glycosyltransferase activities, expanding the molecular framework and facilitating an improved understanding and manipulation of glycosyltransferase functions in biomedical applications.
Collapse
Affiliation(s)
- Daiana Mattoteia
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Antonella Chiapparino
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Marco Fumagalli
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Matteo De Marco
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Francesca De Giorgi
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Lisa Negro
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Alberta Pinnola
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Silvia Faravelli
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Tony Roscioli
- NSW Health Pathology Randwick Genomics Laboratory, Prince of Wales Hospital, Sydney, NSW 2031, Australia
- Neuroscience Research Australia (NeuRA), Prince of Wales Clinical School, University of New South Wales, Sydney, NSW 2052, Australia
| | - Luigi Scietti
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
| | - Federico Forneris
- The Armenise-Harvard Laboratory of Structural Biology, Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9A, 27100 Pavia, Italy
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo, 27100 Pavia, Italy
| |
Collapse
|
5
|
Shi H, Ruan L, Chen Z, Liao Y, Wu W, Liu L, Xu X. Sulfur, sterol and trehalose metabolism in the deep-sea hydrocarbon seep tubeworm Lamellibrachia luymesi. BMC Genomics 2023; 24:175. [PMID: 37020304 PMCID: PMC10077716 DOI: 10.1186/s12864-023-09267-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 03/20/2023] [Indexed: 04/07/2023] Open
Abstract
BACKGROUND Lamellibrachia luymesi dominates cold sulfide-hydrocarbon seeps and is known for its ability to consume bacteria for energy. The symbiotic relationship between tubeworms and bacteria with particular adaptations to chemosynthetic environments has received attention. However, metabolic studies have primarily focused on the mechanisms and pathways of the bacterial symbionts, while studies on the animal hosts are limited. RESULTS Here, we sequenced the transcriptome of L. luymesi and generated a transcriptomic database containing 79,464 transcript sequences. Based on GO and KEGG annotations, we identified transcripts related to sulfur metabolism, sterol biosynthesis, trehalose synthesis, and hydrolysis. Our in-depth analysis identified sulfation pathways in L. luymesi, and sulfate activation might be an important detoxification pathway for promoting sulfur cycling, reducing byproducts of sulfide metabolism, and converting sulfur compounds to sulfur-containing organics, which are essential for symbiotic survival. Moreover, sulfide can serve directly as a sulfur source for cysteine synthesis in L. luymesi. The existence of two pathways for cysteine synthesis might ensure its participation in the formation of proteins, heavy metal detoxification, and the sulfide-binding function of haemoglobin. Furthermore, our data suggested that cold-seep tubeworm is capable of de novo sterol biosynthesis, as well as incorporation and transformation of cycloartenol and lanosterol into unconventional sterols, and the critical enzyme involved in this process might have properties similar to those in the enzymes from plants or fungi. Finally, trehalose synthesis in L. luymesi occurs via the trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP) pathways. The TPP gene has not been identified, whereas the TPS gene encodes a protein harbouring conserved TPS/OtsA and TPP/OtsB domains. The presence of multiple trehalases that catalyse trehalose hydrolysis could indicate the different roles of trehalase in cold-seep tubeworms. CONCLUSIONS We elucidated several molecular pathways of sulfate activation, cysteine and cholesterol synthesis, and trehalose metabolism. Contrary to the previous analysis, two pathways for cysteine synthesis and the cycloartenol-C-24-methyltransferase gene were identified in animals for the first time. The present study provides new insights into particular adaptations to chemosynthetic environments in L. luymesi and can serve as the basis for future molecular studies on host-symbiont interactions and biological evolution.
Collapse
Affiliation(s)
- Hong Shi
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China.
| | - Lingwei Ruan
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China.
- College of Marine Biology, Xiamen ocean vocational college, 361100, Xiamen, People's Republic of China.
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China.
| | - Zimeng Chen
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China
| | - Yifei Liao
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China
- School of Advanced Manufacturing, Fuzhou University, Fuzhou, 362200, People's Republic of China
| | - Wenhao Wu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, People's Republic of China
| | - Linmin Liu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China
| | - Xun Xu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources of Ministry of Natural Resources, Third Institute of Oceanography, Ministry of Natural Resources, Fujian Key Laboratory of Marine Genetic Resources, No. 178 Daxue Road, Xiamen, Fujian, 361005, People's Republic of China
| |
Collapse
|
6
|
Glycoside hydrolases active on microbial exopolysaccharide α-glucans: structures and function. Essays Biochem 2023; 67:505-520. [PMID: 36876882 DOI: 10.1042/ebc20220219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 03/07/2023]
Abstract
Glucose is the most abundant monosaccharide in nature and is an important energy source for living organisms. Glucose exists primarily as oligomers or polymers and organisms break it down and consume it. Starch is an important plant-derived α-glucan in the human diet. The enzymes that degrade this α-glucan have been well studied as they are ubiquitous throughout nature. Some bacteria and fungi produce α-glucans with different glucosidic linkages compared with that of starch, and their structures are quite complex and not fully understood. Compared with enzymes that degrade the α-(1→4) and α-(1→6) linkages in starch, biochemical and structural studies of the enzymes that catabolize α-glucans from these microorganisms are limited. This review focuses on glycoside hydrolases that act on microbial exopolysaccharide α-glucans containing α-(1→6), α-(1→3), and α-(1→2) linkages. Recently acquired information regarding microbial genomes has contributed to the discovery of enzymes with new substrate specificities compared with that of previously studied enzymes. The discovery of new microbial α-glucan-hydrolyzing enzymes suggests previously unknown carbohydrate utilization pathways and reveals strategies for microorganisms to obtain energy from external sources. In addition, structural analysis of α-glucan degrading enzymes has revealed their substrate recognition mechanisms and expanded their potential use as tools for understanding complex carbohydrate structures. In this review, the author summarizes the recent progress in the structural biology of microbial α-glucan degrading enzymes, touching on previous studies of microbial α-glucan degrading enzymes.
Collapse
|
7
|
Feng NN, Du XY, Zhang YS, Jiao ZK, Wu XH, Yang BM. Overweight/obesity-related transcriptomic signature as a correlate of clinical outcome, immune microenvironment, and treatment response in hepatocellular carcinoma. Front Endocrinol (Lausanne) 2022; 13:1061091. [PMID: 36714595 PMCID: PMC9877416 DOI: 10.3389/fendo.2022.1061091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/13/2022] [Indexed: 01/14/2023] Open
Abstract
BACKGROUNDS The pandemic of overweight and obesity (quantified by body mass index (BMI) ≥ 25) has rapidly raised the patient number of non-alcoholic fatty hepatocellular carcinoma (HCC), and several clinical trials have shown that BMI is associated with the prognosis of HCC. However, whether overweight/obesity is an independent prognostic factor is arguable, and the role of overweight/obesity-related metabolisms in the progression of HCC is scarcely known. MATERIALS AND METHODS In the present study, clinical information, mRNA expression profile, and genomic data were downloaded from The Cancer Genome Atlas (TCGA) as a training cohort (TCGA-HCC) for the identification of overweight/obesity-related transcriptome. Machine learning and the Cox regression analysis were conducted for the construction of the overweight/obesity-associated gene (OAG) signature. The Kaplan-Meier curve, receiver operating characteristic (ROC) curve, and the Cox regression analysis were performed to assess the prognostic value of the OAG signature, which was further validated in two independent retrospective cohorts from the International Cancer Genome Consortium (ICGC) and Gene Expression Omnibus (GEO). Subsequently, functional enrichment, genomic profiling, and tumor microenvironment (TME) evaluation were utilized to characterize biological activities associated with the OAG signature. GSE109211 and GSE104580 were retrieved to evaluate the underlying response of sorafenib and transcatheter arterial chemoembolization (TACE) treatment, respectively. The Genomics of Drug Sensitivity in Cancer (GDSC) database was employed for the evaluation of chemotherapeutic response. RESULTS Overweight/obesity-associated transcriptome was mainly involved in metabolic processes and noticeably and markedly correlated with prognosis and TME of HCC. Afterward, a novel established OAG signature (including 17 genes, namely, GAGE2D, PDE6A, GABRR1, DCAF8L1, DPYSL4, SLC6A3, MMP3, RIBC2, KCNH2, HTRA3, PDX1, ATHL1, PRTG, SHC4, C21orf29, SMIM32, and C1orf133) divided patients into high and low OAG score groups with distinct prognosis (median overall survival (OS): 24.87 vs. 83.51 months, p < 0.0001), and the values of area under ROC curve (AUC) in predicting 1-, 2-, 3-, and 4-year OS were 0.81, 0.80, 0.83, and 0.85, respectively. Moreover, the OAG score was independent of clinical features and also exhibited a good ability for prognosis prediction in the ICGC-LIHC-JP cohort and GSE54236 dataset. Expectedly, the OAG score was also highly correlated with metabolic processes, especially oxidative-related signaling pathways. Furthermore, abundant enrichment of chemokines, receptors, MHC molecules, and other immunomodulators as well as PD-L1/PD-1 expression among patients with high OAG scores indicated that they might have better responses to immunotherapy. However, probably exclusion of T cells from infiltrating tumors resulting in lower infiltration of effective T cells would restrict immunotherapeutic effects. In addition, the OAG score was significantly associated with the response of sorafenib and TACE treatment. CONCLUSIONS Overall, this study comprehensively disclosed the relationship between BMI-guided transcriptome and HCC. Moreover, the OAG signature had the potential clinical applications in the future to promote clinical management and precision medicine of HCC.
Collapse
Affiliation(s)
- Ning-Ning Feng
- Department of Hepatobiliary Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xi-Yue Du
- Department of Radiotherapy, Hengshui People’s Hospital, Hengshui, Hebei, China
| | - Yue-Shan Zhang
- Department of Hepatobiliary Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Zhi-Kai Jiao
- Department of Hepatobiliary Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiao-Hui Wu
- Department of Hepatobiliary Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Bao-Ming Yang
- Department of Hepatobiliary Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- *Correspondence: Bao-Ming Yang, ;
| |
Collapse
|
8
|
Nakamura S, Nihira T, Kurata R, Nakai H, Funane K, Park EY, Miyazaki T. Structure of a bacterial α-1,2-glucosidase defines mechanisms of hydrolysis and substrate specificity in GH65 family hydrolases. J Biol Chem 2021; 297:101366. [PMID: 34728215 PMCID: PMC8626586 DOI: 10.1016/j.jbc.2021.101366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/02/2022] Open
Abstract
Glycoside hydrolase family 65 (GH65) comprises glycoside hydrolases (GHs) and glycoside phosphorylases (GPs) that act on α-glucosidic linkages in oligosaccharides. All previously reported bacterial GH65 enzymes are GPs, whereas all eukaryotic GH65 enzymes known are GHs. In addition, to date, no crystal structure of a GH65 GH has yet been reported. In this study, we use biochemical experiments and X-ray crystallography to examine the function and structure of a GH65 enzyme from Flavobacterium johnsoniae (FjGH65A) that shows low amino acid sequence homology to reported GH65 enzymes. We found that FjGH65A does not exhibit phosphorolytic activity, but it does hydrolyze kojibiose (α-1,2-glucobiose) and oligosaccharides containing a kojibiosyl moiety without requiring inorganic phosphate. In addition, stereochemical analysis demonstrated that FjGH65A catalyzes this hydrolytic reaction via an anomer-inverting mechanism. The three-dimensional structures of FjGH65A in native form and in complex with glucose were determined at resolutions of 1.54 and 1.40 Å resolutions, respectively. The overall structure of FjGH65A resembled those of other GH65 GPs, and the general acid catalyst Glu472 was conserved. However, the amino acid sequence forming the phosphate-binding site typical of GH65 GPs was not conserved in FjGH65A. Moreover, FjGH65A had the general base catalyst Glu616 instead, which is required to activate a nucleophilic water molecule. These results indicate that FjGH65A is an α-1,2-glucosidase and is the first bacterial GH found in the GH65 family.
Collapse
Affiliation(s)
- Shuntaro Nakamura
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | | | - Rikuya Kurata
- Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Hiroyuki Nakai
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | - Kazumi Funane
- Faculty of Life and Environmental Sciences, University of Yamanashi, Kofu, Yamanashi, Japan
| | - Enoch Y Park
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan; Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan; Research Institute of Green Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Takatsugu Miyazaki
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan; Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan; Research Institute of Green Science and Technology, Shizuoka University, Shizuoka, Japan.
| |
Collapse
|
9
|
Discovery of a Kojibiose Hydrolase by Analysis of Specificity-Determining Correlated Positions in Glycoside Hydrolase Family 65. Molecules 2021; 26:molecules26206321. [PMID: 34684901 PMCID: PMC8537180 DOI: 10.3390/molecules26206321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/25/2022] Open
Abstract
The Glycoside Hydrolase Family 65 (GH65) is an enzyme family of inverting α-glucoside phosphorylases and hydrolases that currently contains 10 characterized enzyme specificities. However, its sequence diversity has never been studied in detail. Here, an in-silico analysis of correlated mutations was performed, revealing specificity-determining positions that facilitate annotation of the family’s phylogenetic tree. By searching these positions for amino acid motifs that do not match those found in previously characterized enzymes from GH65, several clades that may harbor new functions could be identified. Three enzymes from across these regions were expressed in E. coli and their substrate profile was mapped. One of those enzymes, originating from the bacterium Mucilaginibacter mallensis, was found to hydrolyze kojibiose and α-1,2-oligoglucans with high specificity. We propose kojibiose glucohydrolase as the systematic name and kojibiose hydrolase or kojibiase as the short name for this new enzyme. This work illustrates a convenient strategy for mapping the natural diversity of enzyme families and smartly mining the ever-growing number of available sequences in the quest for novel specificities.
Collapse
|
10
|
Wuitchik DM, Almanzar A, Benson BE, Brennan S, Chavez JD, Liesegang MB, Reavis JL, Reyes CL, Schniedewind MK, Trumble IF, Davies SW. Title: Characterizing environmental stress responses of aposymbiotic Astrangia poculata to divergent thermal challenges. Mol Ecol 2021; 30:5064-5079. [PMID: 34379848 DOI: 10.1111/mec.16108] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 07/13/2021] [Accepted: 07/28/2021] [Indexed: 11/29/2022]
Abstract
Anthropogenic climate change threatens corals globally and both high and low temperatures are known to induce coral bleaching. However, coral stress responses across wide thermal breadths remain understudied. Disentangling the role of symbiosis on the stress response in obligately symbiotic corals is challenging because this response is inherently coupled with nutritional stress. Here, we leverage aposymbiotic colonies of the facultatively symbiotic coral, Astrangia poculata, which lives naturally with and without its algal symbionts, to examine how broad thermal challenges influence coral hosts in the absence of symbiosis. A. poculata were collected from their northern range limit and thermally challenged in two independent 16-day common garden experiments (heat and cold challenge) and behavioral responses to food stimuli and genome-wide gene expression profiling (TagSeq) were performed. Both thermal challenges elicited significant reductions in polyp extension. However, there were five times as many differentially expressed genes (DEGs) under cold challenge compared to heat challenge. Despite an overall stronger response to cold challenge, there was significant overlap in DEGs between thermal challenges. We contrasted these responses to a previously identified module of genes associated with the environmental stress response (ESR) in tropical reef-building corals. Cold challenged corals exhibited a pattern consistent with more severe stressors while the heat challenge response was consistent with lower intensity stressors. Given that these responses were observed in aposymbiotic colonies, many genes previously implicated in ESRs in tropical symbiotic species may represent the coral host's stress response in or out of symbiosis.
Collapse
Affiliation(s)
- D M Wuitchik
- Department of Biology, Boston University, Boston, MA, USA
| | - A Almanzar
- Department of Biology, Boston University, Boston, MA, USA
| | - B E Benson
- Department of Biology, Boston University, Boston, MA, USA
| | - S Brennan
- Department of Biology, Boston University, Boston, MA, USA
| | - J D Chavez
- Department of Biology, Boston University, Boston, MA, USA
| | - M B Liesegang
- Department of Biology, Boston University, Boston, MA, USA.,Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, USA
| | - J L Reavis
- Department of Biology, Boston University, Boston, MA, USA
| | - C L Reyes
- Department of Biology, Boston University, Boston, MA, USA
| | | | - I F Trumble
- Department of Biology, Boston University, Boston, MA, USA
| | - S W Davies
- Department of Biology, Boston University, Boston, MA, USA
| |
Collapse
|
11
|
Guo HF, Bota-Rabassedas N, Terajima M, Leticia Rodriguez B, Gibbons DL, Chen Y, Banerjee P, Tsai CL, Tan X, Liu X, Yu J, Tokmina-Roszyk M, Stawikowska R, Fields GB, Miller MD, Wang X, Lee J, Dalby KN, Creighton CJ, Phillips GN, Tainer JA, Yamauchi M, Kurie JM. A collagen glucosyltransferase drives lung adenocarcinoma progression in mice. Commun Biol 2021; 4:482. [PMID: 33875777 PMCID: PMC8055892 DOI: 10.1038/s42003-021-01982-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 03/08/2021] [Indexed: 02/07/2023] Open
Abstract
Cancer cells are a major source of enzymes that modify collagen to create a stiff, fibrotic tumor stroma. High collagen lysyl hydroxylase 2 (LH2) expression promotes metastasis and is correlated with shorter survival in lung adenocarcinoma (LUAD) and other tumor types. LH2 hydroxylates lysine (Lys) residues on fibrillar collagen's amino- and carboxy-terminal telopeptides to create stable collagen cross-links. Here, we show that electrostatic interactions between the LH domain active site and collagen determine the unique telopeptidyl lysyl hydroxylase (tLH) activity of LH2. However, CRISPR/Cas-9-mediated inactivation of tLH activity does not fully recapitulate the inhibitory effect of LH2 knock out on LUAD growth and metastasis in mice, suggesting that LH2 drives LUAD progression, in part, through a tLH-independent mechanism. Protein homology modeling and biochemical studies identify an LH2 isoform (LH2b) that has previously undetected collagen galactosylhydroxylysyl glucosyltransferase (GGT) activity determined by a loop that enhances UDP-glucose-binding in the GLT active site and is encoded by alternatively spliced exon 13 A. CRISPR/Cas-9-mediated deletion of exon 13 A sharply reduces the growth and metastasis of LH2b-expressing LUADs in mice. These findings identify a previously unrecognized collagen GGT activity that drives LUAD progression.
Collapse
Affiliation(s)
- Hou-Fu Guo
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Neus Bota-Rabassedas
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Masahiko Terajima
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - B Leticia Rodriguez
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Don L Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yulong Chen
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Priyam Banerjee
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chi-Lin Tsai
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaochao Tan
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xin Liu
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jiang Yu
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Michal Tokmina-Roszyk
- Institute for Human Health & Disease Intervention (I-HEALTH) and Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, FL, USA
| | - Roma Stawikowska
- Institute for Human Health & Disease Intervention (I-HEALTH) and Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, FL, USA
| | - Gregg B Fields
- Institute for Human Health & Disease Intervention (I-HEALTH) and Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, FL, USA
| | | | - Xiaoyan Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Juhoon Lee
- Division of Medicinal Chemistry, Targeted Therapeutic Drug Discovery and Development Program, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Kevin N Dalby
- Division of Medicinal Chemistry, Targeted Therapeutic Drug Discovery and Development Program, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Chad J Creighton
- Department of Medicine, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, USA
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - George N Phillips
- Department of Biosciences, Rice University, Houston, TX, USA
- Department of Chemistry, Rice University, Houston, TX, USA
| | - John A Tainer
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mitsuo Yamauchi
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jonathan M Kurie
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
12
|
Collagen hydroxylysine glycosylation: non-conventional substrates for atypical glycosyltransferase enzymes. Biochem Soc Trans 2021; 49:855-866. [PMID: 33704379 DOI: 10.1042/bst20200767] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/11/2021] [Accepted: 02/15/2021] [Indexed: 12/22/2022]
Abstract
Collagen is a major constituent of the extracellular matrix (ECM) that confers fundamental mechanical properties to tissues. To allow proper folding in triple-helices and organization in quaternary super-structures, collagen molecules require essential post-translational modifications (PTMs), including hydroxylation of proline and lysine residues, and subsequent attachment of glycan moieties (galactose and glucose) to specific hydroxylysine residues on procollagen alpha chains. The resulting galactosyl-hydroxylysine (Gal-Hyl) and less abundant glucosyl-galactosyl-hydroxylysine (Glc-Gal-Hyl) are amongst the simplest glycosylation patterns found in nature and are essential for collagen and ECM homeostasis. These collagen PTMs depend on the activity of specialized glycosyltransferase enzymes. Although their biochemical reactions have been widely studied, several key biological questions about the possible functions of these essential PTMs are still missing. In addition, the lack of three-dimensional structures of collagen glycosyltransferase enzymes hinders our understanding of the catalytic mechanisms producing this modification, as well as the impact of genetic mutations causing severe connective tissue pathologies. In this mini-review, we summarize the current knowledge on the biochemical features of the enzymes involved in the production of collagen glycosylations and the current state-of-the-art methods for the identification and characterization of this important PTM.
Collapse
|
13
|
Use of osteoblast-derived matrix to assess the influence of collagen modifications on cancer cells. Matrix Biol Plus 2021; 8:100047. [PMID: 33543040 PMCID: PMC7852199 DOI: 10.1016/j.mbplus.2020.100047] [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: 07/03/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 01/19/2023] Open
Abstract
Collagenous stromal accumulations predict a worse clinical outcome in a variety of malignancies. Better tools are needed to elucidate the way in which collagen influences cancer cells. Here, we report a method to generate collagenous matrices that are deficient in key post-translational modifications and evaluate cancer cell behaviors on those matrices. We utilized genetic and biochemical approaches to inhibit lysine hydroxylation and glucosylation on collagen produced by MC-3T3-E1 murine osteoblasts (MC cells). Seeded onto MC cell-derived matrix surface, multicellular aggregates containing lung adenocarcinoma cells alone or in combination with cancer-associated fibroblasts dissociated with temporal and spatial patterns that were influenced by collagen modifications. These findings demonstrate the feasibility of generating defined collagen matrices that are suitable for cell culture studies. Feasibility of culturing multicellular aggregates on matrices with defined collagen modifications. Collagen modifications influence cancer cell behavior. This methodology is a useful tool for cancer researchers.
Collapse
Key Words
- Co-culture models
- Collagen
- Collagen cross-links
- DHLNL, Dehydro-dihydroxylysinonorleucine/its ketoamine
- ER, Endoplasmic Reticulum
- G, Galactosyl group
- GG, Glucosylgalactosyl group
- HLCCs, Hydroxylysine aldehyde-derived collagen cross-links
- HLNL, Dehydro-hydroxylysinonorleucine/its ketoamine
- Hyl, Hydroxylysine
- Hylald, Aldehide Hydroxylysine
- Hyp, Hydroxyproline
- LCC, Lysine aldehyde–derived cross-links
- LH, Lysyl hydroxylases
- LOX, Lysyl oxidases
- Lung cancer
- Lys, Lysine
- Lysald, Aldehide Lysine
- Lysyl hydroxylases
- Metastasis
- PGGHG, Glucosylgalactosylhydroxylysine glucosidase
- PTMs, Post-translational modifications
- Pro, Proline
- hLys, Helical domain Lysine
- tLys, Telopeptidyl Lysine
Collapse
|
14
|
Ramesh P, Nagarajan V, Khanchandani V, Desai VK, Niranjan V. Proteomic variations of esophageal squamous cell carcinoma revealed by combining RNA-seq proteogenomics and G-PTM search strategy. Heliyon 2020; 6:e04813. [PMID: 32913912 PMCID: PMC7472856 DOI: 10.1016/j.heliyon.2020.e04813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/10/2020] [Accepted: 08/25/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Cancer that arises from epithelial cells of the esophagus is called esophagus squamous cell carcinoma (ESCC) and is mostly observed in developing nations. Evaluation of cancer genomes and its regulation into proteins plays a predominant role in understanding the cancer progressions. Mass-spectrometry-based proteomics is a consequential tool to estimate proteomic variation and posttranslational modifications (PTMs) from standard protein databases. Post-translational modifications play a crucial role in protein folding and PTMs can be accounted for as a biological signal to interpret the structural changes and transition order of proteins. Functional validation of cancer-related mutations can explain the effects of mutations on genes and the identification of Oncogenes and tumor suppressor genes. Therefore, we present a study on protein variations to interpret the structural changes and transition order of proteins in ESCC carcinogenesis. METHODOLOGY We are using a bottom-up proteomics approach with Galaxy-P framework and RNA sequence data analysis to generate the sample-specific databases containing details of RNA splicing and variant peptides. Once the database generated with information on variable modification, only the curated PTMs at specific positions are considered to perform spectral matching. Proteogenomics mapping was performed to identify protein variations in ESCC. RESULTS RNA-sequence proteogenomics with G-PTM (Global Post-Translational Modification) searching strategy has revealed proteomic events including several peptides that contain single amino acid variations, novel splice junction peptides and posttranslationally modified peptides. Proteogenomic mapping exhibited the splice junction peptides mapped predominantly for Malic enzyme exon type (ME-3) and MCM7 protein-coding genes that promote cancer progression, found to be exhibited in ESCC samples. Approximately 25 ± types of PTM modifications were recorded, and Protein Phosphorylation was largely noted. CONCLUSION ESCC cancer prognosis at the molecular level enables a better understanding of cancer carcinogenesis and protein modifications can be used as potential biomarkers.
Collapse
Affiliation(s)
- Pooja Ramesh
- Department of Biotechnology, RV College of Engineering, Bangalore, Karnataka, India
| | | | - Vartika Khanchandani
- Department of Biotechnology, RV College of Engineering, Bangalore, Karnataka, India
| | - Vasanth Kumar Desai
- Department of Biotechnology, RV College of Engineering, Bangalore, Karnataka, India
| | - Vidya Niranjan
- Department of Biotechnology, RV College of Engineering, Bangalore, Karnataka, India
| |
Collapse
|
15
|
Target prediction and validation of microRNAs expressed from FSHR and aromatase genes in human ovarian granulosa cells. Sci Rep 2020; 10:2300. [PMID: 32042028 PMCID: PMC7010774 DOI: 10.1038/s41598-020-59186-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/08/2020] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) are known post-transcriptional regulators of various biological processes including ovarian follicle development. We have previously identified miRNAs from human pre-ovulatory ovarian granulosa cells that are expressed from the intronic regions of two key genes in normal follicular development: FSH receptor (FSHR) and CYP19A1, the latter encoding the aromatase enzyme. The present study aims to identify the target genes regulated by these miRNAs: hsa-miR-548ba and hsa-miR-7973, respectively. The miRNAs of interest were transfected into KGN cell line and the gene expression changes were analyzed by Affymetrix microarray. Potential miRNA-regulated genes were further filtered by bioinformatic target prediction algorithms and validated for direct miRNA:mRNA binding by luciferase reporter assay. LIFR, PTEN, NEO1 and SP110 were confirmed as targets for hsa-miR-548ba. Hsa-miR-7973 target genes ADAM19, PXDN and FMNL3 also passed all verification steps. Additionally, the expression pattern of the miRNAs was studied in human primary cumulus granulosa cell culture in relation to the expression of their host genes and FSH stimulation. Based on our findings we propose the involvement of hsa-miR-548ba in the regulation of follicle growth and activation via LIFR and PTEN. Hsa-miR-7973 may be implicated in the modulation of extracellular matrix and cell-cell interactions by regulating the expression of its identified targets.
Collapse
|
16
|
Fu Y, Gao K, Tao E, Li R, Yi Z. Aberrantly Expressed Long Non‐Coding RNAs In CD8
+
T Cells Response to Active Tuberculosis. J Cell Biochem 2017; 118:4275-4284. [DOI: 10.1002/jcb.26078] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 04/18/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Yurong Fu
- Department of Medical Microbiology of Clinical Medicine CollegeWeifang Medical UniversityShandong Weifang261053China
- School infirmary of Weifang Medical UniversityShandong Weifang261053China
| | - Kunshan Gao
- Department of Laboratory MedicineKey Laboratory of Clinical Laboratory Diagnostics in Universities of ShandongWeifang Medical UniversityShandong Weifang261053China
| | - Enxue Tao
- School infirmary of Weifang Medical UniversityShandong Weifang261053China
| | - Ruifang Li
- Department of Medical Microbiology of Clinical Medicine CollegeWeifang Medical UniversityShandong Weifang261053China
| | - Zhengjun Yi
- Department of Laboratory MedicineKey Laboratory of Clinical Laboratory Diagnostics in Universities of ShandongWeifang Medical UniversityShandong Weifang261053China
| |
Collapse
|