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Han S, Zhu T, Ding S, Wen J, Lin Z, Lu G, Zhang Y, Xiao W, Ding Y, Jia X, Chen H, Gong W. Early growth response genes 2 and 3 induced by AP-1 and NF-κB modulate TGF-β1 transcription in NK1.1 - CD4 + NKG2D + T cells. Cell Signal 2020; 76:109800. [PMID: 33011290 DOI: 10.1016/j.cellsig.2020.109800] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/24/2020] [Accepted: 09/28/2020] [Indexed: 02/06/2023]
Abstract
NK1.1- CD4+ NKG2D+ T cells are a subpopulation of regulatory T cells that downregulate the functions of CD4+ T, CD8+ T, natural killer (NK) cells, and macrophages through TGF-β1 production. Early growth response genes 2 (Egr2) and 3 (Egr3) maintain immune homeostasis by modulating T lymphocyte development, inhibiting effector T cell function, and promoting the induction of regulatory T cells. Whether Egr2 and Egr3 directly regulate TGF-β1 transcription in NK1.1- CD4+ NKG2D+ T cells remains elusive. The expression levels of Egr2 and Egr3 were higher in NK1.1- CD4+ NKG2D+ T cells than in NK1.1- CD4+ NKG2D- T cells. Egr2 and Egr3 expression were remarkably increased after stimulating NK1.1- CD4+ NKG2D+ T cells with sRAE or α-CD3/sRAE. The ectopic expression of Egr2 or Egr3 resulted in the enhancement of TGF-β1 expression, while knockdown of Egr2 or Egr3 led to the decreased expression of TGF-β1 in NK1.1- CD4+ NKG2D+ T cells. Egr2 and Egr3 directly bound with the TGF-β1 promoter as demonstrated by the electrophoretic mobility shift assay and dual-luciferase gene reporter assay. Furthermore, the Egr2 and Egr3 expression of NK1.1- CD4+ NKG2D+ T cells could be induced by the AP-1 and NF-κB transcriptional factors, but had no involvement with the activation of NF-AT and STAT3. In conclusion, Egr2 and Egr3 induced by AP-1 and NF-κB directly initiate TGF-β1 transcription in NK1.1- CD4+ NKG2D+ T cells. This study indicates that manipulating Egr2 and Egr3 expression would potentiate or alleviate the regulatory function of NK1.1- CD4+ NKG2D+ T cells and this strategy could be used in the therapy for patients with autoimmune diseases or tumor.
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Affiliation(s)
- Sen Han
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China; Vaccine and Immunotherapy Center, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Tao Zhu
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China
| | - Shizhen Ding
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China
| | - Jianqiang Wen
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China
| | - Zhijie Lin
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China
| | - Guotao Lu
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China; Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou 225000, PR China
| | - Yu Zhang
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Disease, Yangzhou University, Yangzhou 225000, PR China
| | - Weiming Xiao
- Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Disease, Yangzhou University, Yangzhou 225000, PR China
| | - Yanbing Ding
- Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Disease, Yangzhou University, Yangzhou 225000, PR China
| | - Xiaoqin Jia
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Disease, Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou 225000, PR China
| | - Huabiao Chen
- Vaccine and Immunotherapy Center, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Weijuan Gong
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou 225000, PR China; Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Disease, Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou University, Yangzhou 225000, PR China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225000, PR China.
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Porter W, Snowden E, Hahn F, Ferguson M, Tong F, Dillmore WS, Blaesius R. High accuracy gene expression profiling of sorted cell subpopulations from breast cancer PDX model tissue. PLoS One 2020; 15:e0238594. [PMID: 32911489 PMCID: PMC7482927 DOI: 10.1371/journal.pone.0238594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/19/2020] [Indexed: 01/01/2023] Open
Abstract
Intratumor Heterogeneity (ITH) is a functionally important property of tumor tissue and may be involved in drug resistance mechanisms. Although descriptions of ITH can be traced back to very early reports about cancer tissue, mechanistic investigations are still limited by the precision of analysis methods and access to relevant tissue sources. PDX models have provided a reproducible source of tissue with at least a partial representation of naturally occurring ITH. We investigated the properties of phenotypically distinct cell populations by Fluorescence activated cell sorting (FACS) tissue derived cells from multiple tumors from a triple negative breast cancer patient derived xenograft (PDX) model. We subsequently subjected each population to in depth gene expression analysis. Our findings suggest that process related gene expression changes (caused by tissue dissociation and FACS sorting) are restricted to Immediate Early Genes (IEGs). This allowed us to discover highly reproducible gene expression profiles of distinct cellular compartments identifiable by cell surface markers in this particular tumor model. Within the context of data from a previously published model our work suggests that gene expression profiles associated with hypoxia, stemness and drug resistance may reside in tumor subpopulations predictably growing in PDX models. This approach provides a novel opportunity for prospective mechanistic studies of ITH.
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Affiliation(s)
- Warren Porter
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - Eileen Snowden
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - Friedrich Hahn
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - Mitchell Ferguson
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - Frances Tong
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - W. Shannon Dillmore
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
| | - Rainer Blaesius
- BD Technologies and Innovation, Research Triangle Park, NC, United States of America
- * E-mail:
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Housley SN, Nardelli P, Powers RK, Rich MM, Cope TC. Chronic defects in intraspinal mechanisms of spike encoding by spinal motoneurons following chemotherapy. Exp Neurol 2020; 331:113354. [PMID: 32511953 PMCID: PMC7937189 DOI: 10.1016/j.expneurol.2020.113354] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/11/2020] [Accepted: 05/04/2020] [Indexed: 11/22/2022]
Abstract
Chemotherapy-induced sensorimotor disabilities, including gait and balance disorders, as well as physical fatigue often persist for months and sometimes years into disease free survival from cancer. While associated with impaired sensory function, chronic sensorimotor disorders might also depend on chemotherapy-induced defects in other neuron types. In this report, we extend consideration to motoneurons, which, if chronically impaired, would necessarily degrade movement behavior. The present study was undertaken to determine whether motoneurons qualify as candidate contributors to chronic sensorimotor disability independently from sensory impairment. We tested this possibility in vivo from rats 5 weeks following human-scaled treatment with one of the platinum-based compounds, oxaliplatin, widely used in chemotherapy for a variety of cancers. Action potential firing of spinal motoneurons responding to different fixed levels of electrode-current injection was measured in order to assess the neurons' intrinsic capacity for stimulus encoding. The encoding of stimulus duration and intensity corroborated in untreated control rats was severely degraded in oxaliplatin treated rats, in which motoneurons invariably exhibited erratic firing that was unsustained, unpredictable from one stimulus trial to the next, and unresponsive to changes in current strength. Direct measurements of interspike oscillations in membrane voltage combined with computer modeling pointed to aberrations in subthreshold conductances as a plausible contributor to impaired firing behavior. These findings authenticate impaired spike encoding as a candidate contributor to, in the case of motoneurons, deficits in mobility and fatigue. Aberrant firing also becomes a deficit worthy of testing in other CNS neurons as a potential contributor to perceptual and cognitive disorders induced by chemotherapy in patients.
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Affiliation(s)
- Stephen N Housley
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30318, USA
| | - Paul Nardelli
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30318, USA
| | - Randal K Powers
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Mark M Rich
- Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, OH 45435, USA
| | - Timothy C Cope
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30318, USA; Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30318, USA.
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Moruno-Manchon JF, Uzor NE, Kesler SR, Wefel JS, Townley DM, Nagaraja AS, Pradeep S, Mangala LS, Sood AK, Tsvetkov AS. Peroxisomes contribute to oxidative stress in neurons during doxorubicin-based chemotherapy. Mol Cell Neurosci 2017; 86:65-71. [PMID: 29180229 DOI: 10.1016/j.mcn.2017.11.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 12/14/2022] Open
Abstract
Doxorubicin, a commonly used anti-neoplastic agent, causes severe neurotoxicity. Doxorubicin promotes thinning of the brain cortex and accelerates brain aging, leading to cognitive impairment. Oxidative stress induced by doxorubicin contributes to cellular damage. In addition to mitochondria, peroxisomes also generate reactive oxygen species (ROS) and promote cell senescence. Here, we investigated if doxorubicin affects peroxisomal homeostasis in neurons. We demonstrate that the number of peroxisomes is increased in doxorubicin-treated neurons and in the brains of mice which underwent doxorubicin-based chemotherapy. Pexophagy, the specific autophagy of peroxisomes, is downregulated in neurons, and peroxisomes produce more ROS. 2-hydroxypropyl-β-cyclodextrin (HPβCD), an activator of the transcription factor TFEB, which regulates expression of genes involved in autophagy and lysosome function, mitigates damage of pexophagy and decreases ROS production induced by doxorubicin. We conclude that peroxisome-associated oxidative stress induced by doxorubicin may contribute to neurotoxicity, cognitive dysfunction, and accelerated brain aging in cancer patients and survivors. Peroxisomes might be a valuable new target for mitigating neuronal damage caused by chemotherapy drugs and for slowing down brain aging in general.
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Affiliation(s)
- Jose F Moruno-Manchon
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States
| | - Ndidi-Ese Uzor
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, United States
| | - Shelli R Kesler
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jeffrey S Wefel
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Debra M Townley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Archana Sidalaghatta Nagaraja
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Sunila Pradeep
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Andrey S Tsvetkov
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, United States.
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