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Dhandapani H, Siddiqui A, Karadkar S, Tayalia P. In Vitro 3D Spheroid Model Preserves Tumor Microenvironment of Hot and Cold Breast Cancer Subtypes. Adv Healthc Mater 2023; 12:e2300164. [PMID: 37141121 DOI: 10.1002/adhm.202300164] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/11/2023] [Indexed: 05/05/2023]
Abstract
Dynamic interaction of cancer, immune, and stromal cells with extracellular matrix components modulates and resists the response of standard care therapies. To mimic this, an in vitro 3D spheroid model is designed using liquid overlay method to simulate hot (MDA-MB-231) and cold (MCF-7) breast tumor microenvironment (TME). This study shows increased mesenchymal phenotype, stemness, and suppressive microenvironment in MDA-MB-231-spheroids upon exposure to doxorubicin. Intriguingly, the presence of human dermal fibroblasts enhances cancer-associated fibroblast phenotype in MDA-MB-231-spheroids through increased expression of CXCL12 and FSP-1, leading to higher infiltration of immune cells (THP-1 monocytes). However, a suppressive TME is observed in both subtypes, as seen by upregulation of M2-macrophage-specific CD68 and CD206 markers. Specifically, increased PDL-1 expressing tumor-associated macrophages along with FoxP3 expressing T regulatory cells are found in MDA-MB-231-spheroids when cultured with peripheral blood mononuclear cells. Further, it is found that the addition of 1-methyl-tryptophan, a potent indoleamine-2,3-dioxygenase-1 inhibitor, subsides the suppressive phenotype by decreasing the M2 polarization via downregulation of tryptophan metabolism and IL10 expression, particularly in MCF-7 triculture spheroids. Thus, the in vitro 3D spheroid model of TME can be utilized in therapeutics to validate immunomodulatory drugs for various breast cancer subtypes.
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Affiliation(s)
- Hemavathi Dhandapani
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Armaan Siddiqui
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Shivam Karadkar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Prakriti Tayalia
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
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Sarmah D, Meredith WO, Weber IK, Price MR, Birtwistle MR. Predicting anti-cancer drug combination responses with a temporal cell state network model. PLoS Comput Biol 2023; 19:e1011082. [PMID: 37126527 PMCID: PMC10174488 DOI: 10.1371/journal.pcbi.1011082] [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: 10/18/2022] [Revised: 05/11/2023] [Accepted: 04/06/2023] [Indexed: 05/02/2023] Open
Abstract
Cancer chemotherapy combines multiple drugs, but predicting the effects of drug combinations on cancer cell proliferation remains challenging, even for simple in vitro systems. We hypothesized that by combining knowledge of single drug dose responses and cell state transition network dynamics, we could predict how a population of cancer cells will respond to drug combinations. We tested this hypothesis here using three targeted inhibitors of different cell cycle states in two different cell lines in vitro. We formulated a Markov model to capture temporal cell state transitions between different cell cycle phases, with single drug data constraining how drug doses affect transition rates. This model was able to predict the landscape of all three different pairwise drug combinations across all dose ranges for both cell lines with no additional data. While further application to different cell lines, more drugs, additional cell state networks, and more complex co-culture or in vivo systems remain, this work demonstrates how currently available or attainable information could be sufficient for prediction of drug combination response for single cell lines in vitro.
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Affiliation(s)
- Deepraj Sarmah
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
| | - Wesley O. Meredith
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
| | - Ian K. Weber
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- The University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Madison R. Price
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- College of Pharmacy, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Marc R. Birtwistle
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina, United States of America
- Department of Bioengineering, Clemson University, Clemson, South Carolina, United States of America
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Zhu L, Zhang X, Chen Y, Yan D, Han J. Identification of prognostic genes in oral squamous cell carcinoma microenvironment. Cancer Biomark 2022; 34:523-532. [PMID: 35275524 DOI: 10.3233/cbm-210432] [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: 11/15/2022]
Abstract
BACKGROUND Numerous studies reveal the clinical significance of tumor microenvironment (TME) in multiple cancers. The association between TME in oral squamous cell carcinoma (OSCC) and clinical outcomes remains unsolved. OBJECTIVE This study aims to exhibit the TME of OSCC and identified the prognostic marker. METHODS Gene expression profile and clinical data OSCC patients were from the TCGA database. The validated stage data was from the Gene Expression Omnibus (GSE65858). Immune/stromal scores of each patient were calculated by ESTIMATE algorithm. Biological functional prediction was conducted. Prognostic genes identified by survival analysis. Nomogram and Receiver operating characteristic curves were employed to test the predicting power. TIMER database was applied to evaluated the immune infiltrates. RESULTS Lower immune scores were observed in male patients (P= 0.0107) and different primary tumor sites of oral cavity with different stromal scores (P= 0.0328). The Differentially expressed genes (DEGs) were involved in immune related pathways. HGF gene (hepatocyte growth factor) was prognostic related and with a better prognostic performance when combined with clinical features (AUC=TCGA 0.638, AUC=GEO 0.714). HGF was significantly related with B cell, CD4ï¼T cell, CD8+T cell, macrophage, neutrophils, and dendritic cell infiltration. CONCLUSION The current study analyzed the TME and presented immune related prognostic biomarkers for OSCC.
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Affiliation(s)
- Longbiao Zhu
- Department of The Sixth Dental Division, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China.,Department of The Sixth Dental Division, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Xinyu Zhang
- Department of The Sixth Dental Division, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China.,Department of The Sixth Dental Division, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Yan Chen
- Jiangsu Cancer Centre, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Donglin Yan
- Department of The Sixth Dental Division, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Jing Han
- Jiangsu Cancer Centre, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Bao Y, Cui J, Yue Y, Cao S, Li X, Liu L. ERBB3 binding protein 1 promotes the progression of malignant melanoma through activation of the Wnt/ β-catenin signaling pathway. Cancer Cell Int 2022; 22:44. [PMID: 35093077 PMCID: PMC8800265 DOI: 10.1186/s12935-022-02473-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/16/2022] [Indexed: 12/02/2022] Open
Abstract
Background Malignant melanoma (MM) is highly metastatic and has the highest mortality rate in patients with skin cancer. The ERBB3 binding protein 1 (Ebp1) has been linked to the onset and progression of a number of malignancies. However, the role of Ebp1 in MM has not yet been reported. Methods Multiple databases were analyzed for comparing the expression of Ebp1 in normal skin and MM. Ebp1 expression was knocked down in A375 and B16 cells, and the impact of Ebp1 on the cell growth was tested by CCK-8, plate clone colony, and cell cycle assays. Scratch, transwell, and in vivo caudal vein lung metastasis tests were also used to confirm the effects of Ebp1 on melanoma cells migration, invasion, and metastasis. Furthermore, the possible molecular mechanism of Ebp1 was predicted by set enrichment analysis and verified by western blotting. Results Ebp1 expression was substantially higher in MM than it was in normal skin, and Ebp1 was linked to the clinical stage and lymph node metastases of patients with MM. Knockdown of Ebp1 inhibited cell proliferation, migration, and invasion. In vivo experiments further verified that the knockdown of Ebp1 had an obvious inhibitory effect on lung metastasis in nude mice. Knockdown of Ebp1 reduced vimentin, N-cadherin, slug, and snail expression while increasing E-cadherin expression. Furthermore, knockdown of Ebp1 reduced the expression of β-catenin, as well as its downstream targets CyclinD1 and p-GSK3β; however, a Wnt/β-catenin agonist could reverse this effect. Conclusion Ebp1 may promote the proliferation and metastasis of melanoma cells through activation of the Wnt/β-catenin pathway. Graphical Abstract ![]()
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Human leukocyte antigen class II quantification by targeted mass spectrometry in dendritic-like cell lines and monocyte-derived dendritic cells. Sci Rep 2021; 11:1028. [PMID: 33441579 PMCID: PMC7807004 DOI: 10.1038/s41598-020-77024-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 10/26/2020] [Indexed: 11/08/2022] Open
Abstract
The major histocompatibility complex II (HLA-II) facilitates the presentation of antigen-derived peptides to CD4+ T-cells. Antigen presentation is not only affected by peptide processing and intracellular trafficking, but also by mechanisms that govern HLA-II abundance such as gene expression, biosynthesis and degradation. Herein we describe a mass spectrometry (MS) based HLA-II-protein quantification method, applied to dendritic-like cells (KG-1 and MUTZ-3) and human monocyte-derived dendritic cells (DCs). This method monitors the proteotypic peptides VEHWGLDKPLLK, VEHWGLDQPLLK and VEHWGLDEPLLK, mapping to the α-chains HLA-DQA1, -DPA1 and -DRA1/DQA2, respectively. Total HLA-II was detected at 176 and 248 fmol per million unstimulated KG-1 and MUTZ-3 cells, respectively. In contrast, TNF- and LPS-induced MUTZ-3 cells showed a 50- and 200-fold increase, respectively, of total α-chain as measured by MS. HLA-II protein levels in unstimulated DCs varied significantly between donors ranging from ~ 4 to ~ 50 pmol per million DCs. Cell surface HLA-DR levels detected by flow cytometry increased 2- to 3-fold after DC activation with lipopolysaccharide (LPS), in contrast to a decrease or no change in total HLA α-chain as determined by MS. HLA-DRA1 was detected as the predominant variant, representing > 90% of total α-chain, followed by DPA1 and DQA1 at 3-7% and ≤ 1%, respectively.
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Hou X, Tang W. Pseudogene PA2G4P4 promotes oncogene PA2G4 expression and nuclear translocation to affect glioblastoma cell viability and apoptosis. Life Sci 2020; 265:118793. [PMID: 33220287 DOI: 10.1016/j.lfs.2020.118793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 10/02/2020] [Accepted: 11/15/2020] [Indexed: 12/21/2022]
Abstract
Dysregulation of pseudogenes is involved in the progression of various types of cancer, including glioblastoma (GBM). Proliferation associated-2G4 (PA2G4) pseudogene 4 (PA2G4P4) has been shown to play an oncogenic role in bladder cancer development. Our study aimed to explore the role and mechanism of PA2G4P4 in GBM progression. PA2G4P4 and PA2G4 expression in GBM tissues was analyzed using the GEPIA database. Cell viability, apoptosis, and activities of caspase-3 and caspase-9 in GBM cells were explored by CCK-8, flow cytometry analysis, and colorimetric activity assay kits, respectively. GEPIA database showed that PA2G4P4 and PA2G4 were both upregulated in GBM tissues. PA2G4P4 expression was also boosted in GBM cells. Knockdown of PA2G4P4 or PA2G4 inhibited cell viability, induced apoptosis, and increased caspase-3 and caspase-9 activities in GBM cells. Data from UALCAN database showed that among top 15 genes correlated with PA2G4P4, PA2G4 had the highest correlation coefficient. Additionally, knockdown of PA2G4P4 inhibited PA2G4 expression and nuclear translocation in GBM cells. Overexpression of PA2G4 abolished the functions of PA2G4P4 knockdown on viability and apoptosis in GBM cells. Summarily, pseudogene PA2G4P4 promotes oncogene PA2G4 expression and nuclear translocation to affect cell viability and apoptosis in GBM cells.
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Affiliation(s)
- Xiaofeng Hou
- Department of Neurosurgery, The First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Wenhai Tang
- Department of Neurosurgery, Shanxian Central Hospital, Heze 274300, China.
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Pisapia L, Terreri S, Barba P, Mastroianni M, Donnini M, Mercadante V, Palmieri A, Verze P, Mirone V, Altieri V, Califano G, Liguori GL, Strazzullo M, Cimmino A, Del Pozzo G. Role of PA2G4P4 pseudogene in bladder cancer tumorigenesis. BIOLOGY 2020; 9:E66. [PMID: 32244410 PMCID: PMC7235711 DOI: 10.3390/biology9040066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Many pseudogenes possess biological activities and play important roles in the pathogenesis of various types of cancer including bladder cancer (BlCa), which still lacks suitable molecular biomarkers. Recently, pseudogenes were found to be significantly enriched in a pan-cancer classification based on the Cancer Genome Atlas gene expression data. Among them, the top-ranking pseudogene was the proliferation-associated 2G4 pseudogene 4 (PA2G4P4). METHODS Genomic and transcript features of PA2G4P4 were determined by GeneBank database analysis followed by 5' RACE experiments. Therefore, we conducted a retrospective molecular study on a cohort of 45 patients of BlCa. PA2G4P4 expression was measured by RT-qPCR, whereas PA2G4P4 transcript distribution was analyzed by in situ hybridization on both normal and cancerous histological sections and compared to the immunolocalization of its parental PA2G4/EBP1 protein. Finally, we tested the effects of PA2G4P4 depletion on proliferation, migration, and death of BlCa cells. RESULTS We showed for the first time PA2G4P4 overexpression in BlCa tissues and in cell lines. PA2G4P4 distribution strictly overlaps PA2G4/EBP1 protein localization. Moreover, we showed that PA2G4P4 knockdown affects both proliferation and migration of BlCa cells, highlighting its potential oncogenic role. CONCLUSIONS PA2G4P4 may play a functional role as an oncogene in BlCa development, suggesting it as a good candidate for future investigation and new clinical applications.
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Affiliation(s)
- Laura Pisapia
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Sara Terreri
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
- B Cell Pathophysiology Unit, IRCCS Bambino Gesù Children’s Hospital, 00146 Rome, Italy
| | - Pasquale Barba
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Marianna Mastroianni
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Maria Donnini
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Vincenzo Mercadante
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Alessandro Palmieri
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (A.P.); (V.M.); (G.C.)
| | - Paolo Verze
- Department of Medicine and Surgery “Scuola medica Salernitana” University of Salerno, 84084 Salerno, Italy; (P.V.); (V.A.)
| | - Vincenzo Mirone
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (A.P.); (V.M.); (G.C.)
| | - Vincenzo Altieri
- Department of Medicine and Surgery “Scuola medica Salernitana” University of Salerno, 84084 Salerno, Italy; (P.V.); (V.A.)
| | - Gianluigi Califano
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (A.P.); (V.M.); (G.C.)
| | - Giovanna Lucia Liguori
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Maria Strazzullo
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Amelia Cimmino
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
| | - Giovanna Del Pozzo
- Institute of Genetics and Biophysics, CNR, 80131 Naples, Italy; (L.P.); (S.T.); (P.B.); (M.M.); (M.D.); (V.M.); (A.C.)
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Lokdarshi A, Papdi C, Pettkó-Szandtner A, Dorokhov S, Scheres B, Magyar Z, von Arnim AG, Bögre L, Horváth BM. ErbB-3 BINDING PROTEIN 1 Regulates Translation and Counteracts RETINOBLASTOMA RELATED to Maintain the Root Meristem. PLANT PHYSIOLOGY 2020; 182:919-932. [PMID: 31818906 PMCID: PMC6997692 DOI: 10.1104/pp.19.00805] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/22/2019] [Indexed: 05/09/2023]
Abstract
The ErbB-3 BINDING PROTEIN 1 (EBP1) drives growth, but the mechanism of how it acts in plants is little understood. Here, we show that EBP1 expression and protein abundance in Arabidopsis (Arabidopsis thaliana) are predominantly confined to meristematic cells and are induced by sucrose and partially dependent on TARGET OF RAPAMYCIN (TOR) kinase activity. Consistent with being downstream of TOR, silencing of EBP1 restrains, while overexpression promotes, root growth, mostly under sucrose-limiting conditions. Inducible overexpression of RETINOBLASTOMA RELATED (RBR), a sugar-dependent transcriptional repressor of cell proliferation, depletes meristematic activity and causes precocious differentiation, which is attenuated by EBP1. To understand the molecular mechanism, we searched for EBP1- and RBR-interacting proteins by affinity purification and mass spectrometry. In line with the double-stranded RNA-binding activity of EBP1 in human (Homo sapiens) cells, the overwhelming majority of EBP1 interactors are part of ribonucleoprotein complexes regulating many aspects of protein synthesis, including ribosome biogenesis and mRNA translation. We confirmed that EBP1 associates with ribosomes and that EBP1 silencing hinders ribosomal RNA processing. We revealed that RBR also interacts with a set of EBP1-associated nucleolar proteins as well as factors that function in protein translation. This suggests EBP1 and RBR act antagonistically on common processes that determine the capacity for translation to tune meristematic activity in relation to available resources.
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Affiliation(s)
- Ansul Lokdarshi
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996
| | - Csaba Papdi
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Aladár Pettkó-Szandtner
- Laboratory of Proteomics Research, Biological Research Centre, POB 521, H-6701 Szeged, Hungary
| | - Stefan Dorokhov
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Ben Scheres
- Department of Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Zoltán Magyar
- Institute of Plant Biology, Biological Research Centre, POB 521, H-6701 Szeged, Hungary
| | - Albrecht G von Arnim
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996
- UT-ORNL Graduate School of Genome Science and Technology, Knoxville, Tennessee 37996
| | - László Bögre
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Beatrix M Horváth
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
- Department of Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
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Zhu Y, An X, Zhang X, Qiao Y, Zheng T, Li X. STING: a master regulator in the cancer-immunity cycle. Mol Cancer 2019; 18:152. [PMID: 31679519 PMCID: PMC6827255 DOI: 10.1186/s12943-019-1087-y] [Citation(s) in RCA: 217] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 10/10/2019] [Indexed: 02/21/2023] Open
Abstract
The aberrant appearance of DNA in the cytoplasm triggers the activation of cGAS-cGAMP-STING signaling and induces the production of type I interferons, which play critical roles in activating both innate and adaptive immune responses. Recently, numerous studies have shown that the activation of STING and the stimulation of type I IFN production are critical for the anticancer immune response. However, emerging evidence suggests that STING also regulates anticancer immunity in a type I IFN-independent manner. For instance, STING has been shown to induce cell death and facilitate the release of cancer cell antigens. Moreover, STING activation has been demonstrated to enhance cancer antigen presentation, contribute to the priming and activation of T cells, facilitate the trafficking and infiltration of T cells into tumors and promote the recognition and killing of cancer cells by T cells. In this review, we focus on STING and the cancer immune response, with particular attention to the roles of STING activation in the cancer-immunity cycle. Additionally, the negative effects of STING activation on the cancer immune response and non-immune roles of STING in cancer have also been discussed.
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Affiliation(s)
- Yuanyuan Zhu
- Department of Pathology, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, 150081, China
| | - Xiang An
- Department of Pathology, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, 150081, China
| | - Xiao Zhang
- Department of Pathology, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, 150081, China
| | - Yu Qiao
- Department of Histology and Embryology, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, 150081, China
| | - Tongsen Zheng
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, No.150 Haping Road, Nangang District, Harbin, 150081, China.
| | - Xiaobo Li
- Department of Pathology, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, 150081, China.
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Han EH, Singh P, Lee IK, Urrutia R, Chi YI. ErbB3-binding protein 1 (EBP1) represses HNF4α-mediated transcription and insulin secretion in pancreatic β-cells. J Biol Chem 2019; 294:13983-13994. [PMID: 31362984 DOI: 10.1074/jbc.ra119.009558] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/18/2019] [Indexed: 12/13/2022] Open
Abstract
HNF4α (hepatocyte nuclear factor 4α) is one of the master regulators of pancreatic β-cell development and function, and mutations in the HNF4α gene are well-known monogenic causes of diabetes. As a member of the nuclear receptor family, HNF4α exerts its gene regulatory function through various molecular interactions; however, there is a paucity of knowledge of the different functional complexes in which HNF4α participates. Here, to find HNF4α-binding proteins in pancreatic β-cells, we used yeast two-hybrid screening, a mammalian two-hybrid assay, and glutathione S-transferase pulldown approaches, which identified EBP1 (ErbB3-binding protein 1) as a factor that binds HNF4α in a LXXLL motif-mediated manner. In the β-cells, EBP1 suppressed the expression of HNF4α target genes that are implicated in insulin secretion, which is impaired in HNF4α mutation-driven diabetes. The crystal structure of the HNF4α ligand-binding domain in complex with a peptide harboring the EBP1 LXXLL motif at 3.15Å resolution hinted at the molecular basis of the repression. The details of the structure suggested that EBP1's LXXLL motif competes with HNF4α coactivators for the same binding pocket and thereby prevents recruitment of additional transcriptional coactivators. These findings provide further evidence that EBP1 plays multiple cellular roles and is involved in nuclear receptor-mediated gene regulation. Selective disruption of the HNF4α-EBP1 interaction or tissue-specific EBP1 inactivation can enhance HNF4α activities and thereby improve insulin secretion in β-cells, potentially representing a new strategy for managing diabetes and related metabolic disorders.
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Affiliation(s)
- Eun Hee Han
- Section of Structural Biology, Hormel Institute, University of Minnesota, Austin, Minnesota 55912.,Drug & Disease Target Group, Division of Life Science, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Puja Singh
- Section of Structural Biology, Hormel Institute, University of Minnesota, Austin, Minnesota 55912
| | - In-Kyu Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Republic of Korea
| | - Raul Urrutia
- Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Division of Research, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
| | - Young-In Chi
- Section of Structural Biology, Hormel Institute, University of Minnesota, Austin, Minnesota 55912 .,Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Division of Research, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
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Ntini E, Louloupi A, Liz J, Muino JM, Marsico A, Ørom UAV. Long ncRNA A-ROD activates its target gene DKK1 at its release from chromatin. Nat Commun 2018; 9:1636. [PMID: 29691407 PMCID: PMC5915440 DOI: 10.1038/s41467-018-04100-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 04/04/2018] [Indexed: 12/20/2022] Open
Abstract
Long ncRNAs are often enriched in the nucleus and at chromatin, but whether their dissociation from chromatin is important for their role in transcription regulation is unclear. Here, we group long ncRNAs using epigenetic marks, expression and strength of chromosomal interactions; we find that long ncRNAs transcribed from loci engaged in strong long-range chromosomal interactions are less abundant at chromatin, suggesting the release from chromatin as a crucial functional aspect of long ncRNAs in transcription regulation of their target genes. To gain mechanistic insight into this, we functionally validate the long ncRNA A-ROD, which enhances DKK1 transcription via its nascent spliced released form. Our data provide evidence that the regulatory interaction requires dissociation of A-ROD from chromatin, with target specificity ensured within the pre-established chromosomal proximity. We propose that the post-transcriptional release of a subset of long ncRNAs from the chromatin-associated template plays an important role in their function as transcription regulators.
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Affiliation(s)
- Evgenia Ntini
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany.
| | - Annita Louloupi
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany.,Free University Berlin, 14195, Berlin, Germany
| | - Julia Liz
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany
| | | | - Annalisa Marsico
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany.,Free University Berlin, 14195, Berlin, Germany
| | - Ulf Andersson Vang Ørom
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany. .,Institute for Molecular Biology and Genetics, Aarhus University, 8000, Aarhus, Denmark.
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Yu M, Wang H, Liu Z, Lu Y, Yu D, Li D, Du W. Ebp1 regulates myogenic differentiation of myoblast cells via SMAD2/3 signaling pathway. Dev Growth Differ 2017; 59:540-551. [PMID: 28707296 DOI: 10.1111/dgd.12380] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/25/2022]
Abstract
Regulation of skeletal muscle development requires many of the regulatory networks that are fundamental to developmental myogenesis. ErbB3 binding protein-1 (Ebp1) is involved in the control of myoblasts development in chicken. However, the expression and biological functions of Ebp1 in the progress of myogenesis are unclear. This study focused on determining the effect of Ebp1 on myogenic proliferation and differentiation using a primary myoblasts culture model. Ebp1 was found to upregulate in proliferating myoblasts and decrease at the early stage of myogenic differentiation. The level of endogenous Ebp1 increased from E9 to E20 chicken leg muscles. Knockdown of Ebp1 had no effect on myoblasts proliferation. However, myogenic differentiation into multinucleated myotubes was significantly reduced. The mRNA and protein expression of MRFs was decreased when Ebp1 was knocked down. Downregulation of Ebp1, accompanied by elevated levels of pSMAD2/3, suggests that Ebp1 is involved in regulating myogenic differentiation via SMAD2/3 inhibition. The phosphorylation of SMAD2/3 was activated and the expression of MYOD and MYOG was reduced in Ebp1 knockdown myoblasts, but addition of LY2109761 (an inhibitor specified to SMAD2/3) blocked these effects. Collectively, these results indicate that Ebp1 promotes myoblast differentiation by inhibition of SMAD2/3 signaling pathway during chicken myogenesis. These data provide new insights into the biological role of Ebp1 in embryonic chicken skeletal muscle development.
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Affiliation(s)
- Minli Yu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Huan Wang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Zhen Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Yinglin Lu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Debing Yu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Dongfeng Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
| | - Wenxing Du
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China
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