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Ortega MA, Asúnsolo Á, Pekarek L, Alvarez-Mon MA, Delforge A, Sáez MA, Coca S, Sainz F, Mon MÁ, Buján J, García-Honduvilla N. Histopathological study of JNK in venous wall of patients with chronic venous insufficiency related to osteogenesis process. Int J Med Sci 2021; 18:1921-1934. [PMID: 33850461 PMCID: PMC8040408 DOI: 10.7150/ijms.54052] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 02/11/2021] [Indexed: 12/14/2022] Open
Abstract
Chronic venous insufficiency (CVI) is one of the most common vascular pathologies worldwide. One of the risk factors for the development of CVI is aging, which is why it is related to senile changes. The main trigger of the changes that occur in the venous walls in CVI is blood flow reflux, which produces increased hydrostatic pressure, leading to valve incompetence. The cellular response is one of the fundamental processes in vascular diseases, causing the activation of cell signalling pathways such as c-Jun N-terminal kinase (JNK). Metabolic changes and calcifications occur in vascular pathology as a result of pathophysiological processes. The aim of this study was to determine the expression of JNK in venous disease and its relationship with the role played by the molecules involved in the osteogenic processes in venous tissue calcification. This was a cross-sectional study that analyzed the greater saphenous vein wall in 110 patients with (R) and without venous reflux (NR), classified according to age. Histopathological techniques were used and protein expression was analysed using immunohistochemistry techniques for JNK and markers of osteogenesis (RUNX2, osteocalcin (OCN), osteopontin (OPN)). Significantly increased JNK, RUNX2, OCN, OPN and pigment epithelium-derived factor (PEDF) protein expression and the presence of osseous metaplasia and amorphous calcification were observed in younger patients (<50 years) with venous reflux. This study shows for the first time the existence of an osteogenesis process related to the expression of JNK in the venous wall.
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Affiliation(s)
- Miguel A Ortega
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Ramón y Cajal Institute of Healthcare Research (IRYCIS), Madrid, Spain
- Cancer Registry and Pathology Department, Hospital Universitario Principe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Ángel Asúnsolo
- Ramón y Cajal Institute of Healthcare Research (IRYCIS), Madrid, Spain
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Leonel Pekarek
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Miguel A Alvarez-Mon
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | - Arnaud Delforge
- UFR of pharmacy, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Miguel A Sáez
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Pathological Anatomy Service, Central University Hospital of Defence-UAH Madrid, Spain
| | - Santiago Coca
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Cancer Registry and Pathology Department, Hospital Universitario Principe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Felipe Sainz
- Ramón y Cajal Institute of Healthcare Research (IRYCIS), Madrid, Spain
- Angiology and Vascular Surgery Service, Central University Hospital of Defence-UAH Madrid, Spain
| | - Melchor Álvarez- Mon
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Cancer Registry and Pathology Department, Hospital Universitario Principe de Asturias, Alcalá de Henares, Madrid, Spain
- Immune System Diseases-Rheumatology, Oncology Service and Internal Medicine, University Hospital Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Julia Buján
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Cancer Registry and Pathology Department, Hospital Universitario Principe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Natalio García-Honduvilla
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
- Cancer Registry and Pathology Department, Hospital Universitario Principe de Asturias, Alcalá de Henares, Madrid, Spain
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Sripada A, Sirohi K, Michalec L, Guo L, McKay JT, Yadav S, Verma M, Good J, Rollins D, Gorska MM, Alam R. Sprouty2 positively regulates T cell function and airway inflammation through regulation of CSK and LCK kinases. PLoS Biol 2021; 19:e3001063. [PMID: 33684096 PMCID: PMC7971865 DOI: 10.1371/journal.pbio.3001063] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 03/18/2021] [Accepted: 02/12/2021] [Indexed: 11/19/2022] Open
Abstract
The function of Sprouty2 (Spry2) in T cells is unknown. Using 2 different (inducible and T cell-targeted) knockout mouse strains, we found that Spry2 positively regulated extracellular signal-regulated kinase 1/2 (ERK1/2) signaling by modulating the activity of LCK. Spry2-/- CD4+ T cells were unable to activate LCK, proliferate, differentiate into T helper cells, or produce cytokines. Spry2 deficiency abrogated type 2 inflammation and airway hyperreactivity in a murine model of asthma. Spry2 expression was higher in blood and airway CD4+ T cells from patients with asthma, and Spry2 knockdown impaired human T cell proliferation and cytokine production. Spry2 deficiency up-regulated the lipid raft protein caveolin-1, enhanced its interaction with CSK, and increased CSK interaction with LCK, culminating in augmented inhibitory phosphorylation of LCK. Knockdown of CSK or dislodgment of caveolin-1-bound CSK restored ERK1/2 activation in Spry2-/- T cells, suggesting an essential role for Spry2 in LCK activation and T cell function.
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Affiliation(s)
- Anand Sripada
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Kapil Sirohi
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Lidia Michalec
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Lei Guo
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Jerome T McKay
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Sangya Yadav
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - Mukesh Verma
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
| | - James Good
- Division of Pulmonary and Critical Care, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Donald Rollins
- Division of Pulmonary and Critical Care, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Magdalena M Gorska
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Rafeul Alam
- Division of Allergy and Immunology, Department of Medicine, National Jewish Health, Denver, Colorado, United States of America
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
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103
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Ma JQ, Li LS, Li YH, Hu YZ. PLCε1 mediates one-lung ventilation injury by regulating the p38/RhoA/NFκB activation loop. Mol Immunol 2021; 133:135-145. [PMID: 33662817 DOI: 10.1016/j.molimm.2021.02.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 01/28/2021] [Accepted: 02/14/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Phospholipase C epsilon-1 (PLCε1) might be a novel and potential target in treating inflammatory conditions. In the present study, we aimed to clarify whether PLCε1 is involved in lung injury caused by one-lung ventilation (OLV) and to elucidate the potential molecular mechanism of PLCε1-mediated signaling pathway on OLV induced inflammatory response and injury. METHODS Male Sprague-Dawley (SD) rats were divided into wide-type (PLCε1-WT) group and PLCε1-KO group, and were treated with OLV for 0.5 h, 1 h, and 2 h respectively. Observation of lung tissue injury in rats was performed by Hematoxylin and eosin (HE) staining and Wet/dry (W/D) radios. In addition, pulmonary microvascular endothelial cells (PMVECs) transfected with PLCε1-si RNA, were stimulated by lipopolysaccharide (LPS). To explore the possible roles of PLCε1 in the OLV induced inflammatory injury and the involved pathway underlying, the lung tissue and bronchoalveolar lavage fluids (BALF) of OLV rats, as well as the PMVECs were prepared for further analysis. Enzyme-linked immunoassay (ELISA) was used to detect the expression of pro-inflammatory factors. The activities of related pathway proteins (NF-κB, phospho-p38, p38, phospho-ERK1/2, ERK1/2, RhoA and ROCK) were also detected by reverse transcription quantitative polymerase chain reaction (RT-qPCR) and western blot analysis. RESULTS Compared to the PLCε1-WT rats, PLCε1-KOrats exhibited marked alleviation of lung inflammation as shown by great reduction in lung wet/dry weight ratios, decreases in the expressions of pro-inflammatory mediators, and declines in the number of neutrophils and the protein concentration in bronchoalveolar lavage fluid (BALF). Moreover, the increased expressions of RhoA and NF-κB p65 mRNA induced by OLV were significantly inhibited in PLCε1-KO rats. In LPS treated PMVECs, PLCε1-si RNA transfection ones also showed the decrease expression of proinflammatory mediators, reduction in p38 phosphorylation levels and downregulation of RhoA/ROCK signaling activation. Co-cultured with PLCε1-si RNA and BTRB796 (p38 inhibitors) in LPS-stimulated PMVECs resulted in a significant reduction in RhoA and NF-κB activity. In addition, treatment with either ROCK inhibitor (Y-27632) or dominant negative mutant of RhoA (RhoT19 N) significantly reduced the expression of NF-κB in PLCε1-si RNA treated PMVECs. CONCLUSION The results indicated that PLCε1 played an important role in the inflammatory response induced by OLV. Moreover, through promoting p38/RhoA/ROCK activation loop, PLCε1 promoted NF-κB activation and thereby increased the expressions of inflammatory mediators, which induced the PMVECs inflammation and subsequent injury. The results of this study provide a potential therapeutic target for the reduction of inflammatory response in patients with OLV.
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Affiliation(s)
- Jia-Qin Ma
- Experimental Center of Medical Function, Kunming Medical University, No 1168 West Chunrong Rd, Kunming,650500, China
| | - Li-Sha Li
- Department of Anesthesiology, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, No 157 Jinbi Rd, Kunming, 650032, China
| | - Yan-Hua Li
- Department of Anesthesiology, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, No 157 Jinbi Rd, Kunming, 650032, China
| | - Yu-Zhen Hu
- Department of Anesthesiology, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, No 157 Jinbi Rd, Kunming, 650032, China
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Pan YH, Chen J, Sun C, Ma JF, Li X. Effect of Ras-guanine nucleotide release factor 1-mediated H-Ras/ERK signaling pathway on glioma. Brain Res 2021; 1754:147247. [PMID: 33412149 DOI: 10.1016/j.brainres.2020.147247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/29/2020] [Accepted: 12/14/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To investigate the function of Ras-guanine nucleotide release factor 1 (Ras-GRF1) in glioma through mediating H-Ras/ERK signaling pathway. METHODS Ras-GRF1, H-Ras, K-Ras and N-Ras expressions in glioma and normal brain tissues were detected via Immunohistochemistry. Glioma cells (U87 cells, U251 cells and primary human glioma cells) were transfected with Ras-GRF1 siRNA, H-Ras siRNA and/or Ras-GRF1 lentivirus activation particles. Then, the following aspects were evaluated: cell proliferation by MTT assay, clonogenic ability by the plate clone formation experiment, cell migration and invasion by Wound-healing and Transwell assays, and cell apoptosis by Annexin-V-FITC/PI staining. The protein expressions were measured by Western blotting. Subcutaneous and orthotopic mouse models of glioma were conducted to determine the role of Ras-GRF1 in glioma tumorigenesis. RESULTS Ras-GRF1, H-Ras, K-Ras and N-Ras expressions were upregulated in the glioma tissues, which were correlated with the WHO grade of glioma. Besides, Ras-GRF1 expression was positively related to H-Ras expression. Ras-GRF1 siRNA could reduce the expression of H-Ras and p-ERK/ERK in glioma cell. H-Ras siRNA inhibited the proliferation, clone formation, migration and invasion, and enhance the apoptosis of glioma cells, which, however, were reversed by Ras-GRF1 lentivirus activation particles. In vivo experiments also revealed that Ras-GRF1 shRNA reduced the volume and weight of the tumors in the nude mice, with down-regulations of H-Ras and p-ERK/ERK. CONCLUSION Ras-GRF1 was upregulated in glioma tissues and correlated with its malignancy and prognosis. Silencing Ras-GRF1, through mediating H-Ras/ERK pathway, may suppress the growth and metastasis of glioma.
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Affiliation(s)
- Yi-Heng Pan
- Center for Diagnosis and Treatment of Neuro-oncology Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Jing Chen
- Center for Diagnosis and Treatment of Neuro-oncology Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Cui Sun
- Center for Diagnosis and Treatment of Neuro-oncology Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Ji-Fen Ma
- Center for Diagnosis and Treatment of Neuro-oncology Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Xia Li
- Center for Diagnosis and Treatment of Neuro-oncology Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China.
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105
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Han JH, Park HS, Lee DH, Jo JH, Heo KS, Myung CS. Regulation of autophagy by controlling Erk1/2 and mTOR for platelet-derived growth factor-BB-mediated vascular smooth muscle cell phenotype shift. Life Sci 2021; 267:118978. [PMID: 33412209 DOI: 10.1016/j.lfs.2020.118978] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/26/2022]
Abstract
AIMS Vascular smooth muscle cell (VSMC) phenotype shift is involved in the pathophysiology of vascular injury or platelet-derived growth factor (PDGF)-induced abnormal proliferation and migration of VSMCs. We aimed to investigate the underlying mechanism involved in PDGF-mediated signaling pathways and autophagy regulation followed by VSMC phenotype shift. MAIN METHODS The proliferation, migration and apoptosis of cultured rat aortic VSMCs were measured, and cells undergoing phenotype shift and autophagy were examined. Specific inhibitors for target proteins in signaling pathways were applied to clarify their roles in regulating cell functions. KEY FINDINGS PDGF-BB stimulation initiated autophagy activation and synthetic phenotype transition by decreasing α-smooth muscle-actin (SMA), calponin and myosin heavy chain (MHC) and increasing osteopontin (OPN) expression. However, U0126, a potent extracellular signal-regulated kinase 1/2 (Erk1/2) inhibitor, decreased PDGF-BB-induced LC3 expression, while rapamycin, an inhibitor of the mammalian target of rapamycin (mTOR), increased it. Furthermore, U0126 decreased the expresseion of autophagy-related genes (Atgs) such as beclin-1, Atg7, Atg5, and Atg12-Atg5 complex, indicating that Erk1/2 is a regulator of PDGF-BB-induced VSMC autophagy. Regardless of autophagy inhibition by U0126 or activation by rapamycin, the PDGF-BB-induced decrease in SMA, calponin and MHC and increase in OPN expression were inhibited. Furthermore, PDGF-BB-stimulated VSMC proliferation, migration and proliferating cell nuclear antigen (PCNA) expression were inhibited by U0126 and rapamycin. SIGNIFICANCE These findings suggest that PDGF-BB-induced autophagy is strongly regulated by Erk1/2, an mTOR-independent pathway, and any approach for targeting autophagy modulation is a potential therapeutic strategy for addressing abnormal VSMC proliferation and migration.
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Affiliation(s)
- Joo-Hui Han
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea; Institute of Drug Research & Development, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Hyun-Soo Park
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Do-Hyung Lee
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Jun-Hwan Jo
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Kyung-Sun Heo
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea
| | - Chang-Seon Myung
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon 34134, Republic of Korea; Institute of Drug Research & Development, Chungnam National University, Daejeon 34134, Republic of Korea.
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Lee DS, Kim JE. Regional specific activations of ERK1/2 and CDK5 differently regulate astroglial responses to ER stress in the rat hippocampus following status epilepticus. Brain Res 2021; 1753:147262. [PMID: 33422538 DOI: 10.1016/j.brainres.2020.147262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/02/2020] [Accepted: 12/24/2020] [Indexed: 01/04/2023]
Abstract
Endoplasmic reticulum (ER) triggers the regional specific astroglial responses to status epilepticus (SE, a prolonged seizure activity). However, the epiphenomena/downstream effecters for ER stress and the mechanism of ER stress signaling in astroglial apoptosis have not been fully understood. In the present study, tunicamycin-induced ER stress resulted in reactive astrogliosis-like events showing astroglial hypertrophy with the elevated extracellular signal-activated protein kinase 1/2 (ERK1/2) and cyclin-dependent kinase 5 (CDK5) phosphorylations in the CA1 region of the rat hippocampus. However, tunicamycin increased CDK5, but not ERK1/2, phosphorylation in the molecular layer of the dentate gyrus. Roscovitine (a CDK5 inhibitor) suppressed the effect of tunicamycin in the molecular layer of the dentate gyrus and the CA1 region, while U0126 (an ERK1/2 inhibitor) reversed it in the CA1 region. Salubrinal (an ER stress inhibitor) abrogated activations of ERK1/2 and CDK5, and attenuated reactive astrogliosis in the CA1 region and astroglial apoptosis in the molecular layer of the dentate gyrus following status epilepticus (SE, a prolonged seizure activity). These findings indicate that ER stress may induce reactive astrogliosis via ERK1/2-mediated CDK5 activation in the CA1 region. In the molecular layer of the dentate gyrus, however, ER stress may participate in astroglial apoptosis through ERK1/2-independent CDK5 activation following SE.
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Affiliation(s)
- Duk-Shin Lee
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, Kangwon-Do 24252, South Korea
| | - Ji-Eun Kim
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, Kangwon-Do 24252, South Korea.
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107
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Stone KP, Ghosh S, Kovalik JP, Orgeron M, Wanders D, Sims LC, Gettys TW. The acute transcriptional responses to dietary methionine restriction are triggered by inhibition of ternary complex formation and linked to Erk1/2, mTOR, and ATF4. Sci Rep 2021; 11:3765. [PMID: 33580171 PMCID: PMC7880992 DOI: 10.1038/s41598-021-83380-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/01/2021] [Indexed: 12/20/2022] Open
Abstract
The initial sensing of dietary methionine restriction (MR) occurs in the liver where it activates an integrated stress response (ISR) that quickly reduces methionine utilization. The ISR program is regulated in part by ATF4, but ATF4's prototypical upstream regulator, eIF2α, is not acutely activated by MR. Bioinformatic analysis of RNAseq and metabolomics data from liver samples harvested 3 h and 6 h after initiating MR shows that general translation is inhibited at the level of ternary complex formation by an acute 50% reduction of hepatic methionine that limits formation of initiator methionine tRNA. The resulting ISR is induced by selective expression of ATF4 target genes that mediate adaptation to reduced methionine intake and return hepatic methionine to control levels within 4 days of starting the diet. Complementary in vitro experiments in HepG2 cells after knockdown of ATF4, or inhibition of mTOR or Erk1/2 support the conclusion that the early induction of genes by MR is partially dependent on ATF4 and regulated by both mTOR and Erk1/2. Taken together, these data show that initiation of dietary MR induces an mTOR- and Erk1/2-dependent stress response that is linked to ATF4 by the sharp, initial drop in hepatic methionine and resulting repression of translation pre-initiation.
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Affiliation(s)
- Kirsten P Stone
- Laboratory of Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA
| | - Sujoy Ghosh
- Laboratory of Computational Biology, Pennington Biomedical Research Center, Baton Rouge, LA, USA
- Program in Cardiovascular and Metabolic Disorders and Center for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - Jean Paul Kovalik
- Program in Cardiovascular and Metabolic Disorders and Center for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - Manda Orgeron
- Laboratory of Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA
| | - Desiree Wanders
- Department of Nutrition, Georgia State University, Atlanta, GA, USA
| | - Landon C Sims
- Laboratory of Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA
| | - Thomas W Gettys
- Laboratory of Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.
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108
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Wang L, Ning S. TRIMming Type I Interferon-Mediated Innate Immune Response in Antiviral and Antitumor Defense. Viruses 2021; 13:279. [PMID: 33670221 PMCID: PMC7916971 DOI: 10.3390/v13020279] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 12/17/2022] Open
Abstract
The tripartite motif (TRIM) family comprises at least 80 members in humans, with most having ubiquitin or SUMO E3 ligase activity conferred by their N-terminal RING domain. TRIMs regulate a wide range of processes in ubiquitination- or sumoylation-dependent manners in most cases, and fewer as adaptors. Their roles in the regulation of viral infections, autophagy, cell cycle progression, DNA damage and other stress responses, and carcinogenesis are being increasingly appreciated, and their E3 ligase activities are attractive targets for developing specific immunotherapeutic strategies for immune diseases and cancers. Given their importance in antiviral immune response, viruses have evolved sophisticated immune escape strategies to subvert TRIM-mediated mechanisms. In this review, we focus on their regulation of IFN-I-mediated innate immune response, which plays key roles in antiviral and antitumor defense.
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Affiliation(s)
- Ling Wang
- Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA;
- Center of Excellence for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Shunbin Ning
- Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA;
- Center of Excellence for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
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109
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Ostrowski SM, Fisher DE. The Melanocyte Lineage Factor miR-211 Promotes BRAF V600E Inhibitor Resistance. J Invest Dermatol 2021; 141:250-252. [PMID: 33504438 DOI: 10.1016/j.jid.2020.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 11/15/2022]
Abstract
Resistance to targeted therapy and immunotherapy remains a major obstacle in improving care for patients with advanced melanoma. MicroRNAs play important roles in regulating gene networks involved in disease progression and resistance to therapy in cancers such as melanoma. MicroRNA miR-211 contributes to melanocyte and melanoma biology and has been implicated in targeted therapy resistance. Lee et al. (2020) report a novel mechanism by which miR-211 promotes resistance to BRAFV600E inhibitor therapy via the upregulation of the extracellular signal-regulated kinase 5 signaling pathway.
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Affiliation(s)
- Stephen M Ostrowski
- Department of Dermatology, Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts, USA
| | - David E Fisher
- Department of Dermatology, Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts, USA.
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Kielbik M, Szulc-Kielbik I, Klink M. Impact of Selected Signaling Proteins on SNAIL 1 and SNAIL 2 Expression in Ovarian Cancer Cell Lines in Relation to Cells' Cisplatin Resistance and EMT Markers Level. Int J Mol Sci 2021; 22:ijms22020980. [PMID: 33478150 PMCID: PMC7835952 DOI: 10.3390/ijms22020980] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/08/2021] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
It has been increasingly recognized that SNAIL1 and SNAIL2, as major EMT-inducers, might also be involved in drug resistance of cancer cells. We sought to determine a relation between SNAIL1/2, E-cadherin and N-cadherin expression, as well as ovarian cancer cells’ resistance to cisplatin and EMT markers’ level. Thus, four ovarian cancer cell lines, were used: A2780, A2780cis, SK-OV-3 and OVCAR-3. We assessed the impact of ERK1/2, AKT and STAT3 proteins (chosen by the profiling activity of over 40 signaling proteins) on SNAIL1/2 expression, along with E-cadherin and N-cadherin levels. We showed that expression of SNAIL1 and N-cadherin are the highest in cisplatin-resistant A2780cis and SK-OV-3 cells, while high SNAIL2 and E-cadherin levels were observed in cisplatin-sensitive A2780 cells. The highest E-cadherin level was noticed in OVCAR-3 cells. SNAIL1/2 expression was dependent on ERK1/2 activity in cisplatin-resistant and potentially invasive SK-OV-3 and OVCAR-3 cells. STAT-3 regulates expression of SNAIL1/2 and leads to the so-called “cadherin switch” in cancer cells, independently of their chemoresistance. In conclusion, SNAIL1, but not SNAIL2, seems to be involved in ovarian cancer cells’ cisplatin resistance. STAT3 is a universal factor determining the expression of SNAIL1/2 in ovarian cancer cells regardless of their chemoresitance or invasive capabilities.
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Lai KH, Chen PJ, Chen CC, Yang SH, El-Shazly M, Chang YC, Wu YH, Wu YH, Wang YH, Hsieh HL, Hwang TL. Lophatherum gracile Brongn. attenuates neutrophilic inflammation through inhibition of JNK and calcium. J Ethnopharmacol 2021; 264:113224. [PMID: 32800928 DOI: 10.1016/j.jep.2020.113224] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/05/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lophatherum gracile Brongn. (L. gracile) has been long used in traditional herbal medicine to clinically clear heat, disinhibit dampness, and treat inflammation. However, the effect of L. gracile on the activation of human neutrophils remains unclear. AIM OF THE STUDY The aim of current study is to investigate the anti-inflammatory properties of L. gracile extract (LGE) in N-formyl-methionyl-leucyl-phenylalanine (fMLF)-induced activation of human neutrophils. MATERIALS AND METHODS Superoxide anion generation and elastase release were estimated by spectrophotometry. A series of signaling pathways including mitogen-activated protein kinases (MAPKs) and protein kinase B (Akt), as well as calcium mobilization were studied by Western blot analysis and spectrofluorometry. RESULTS Our experimental results indicated that the nontoxic dosage of LGE does-dependently inhibited the fMLF-induced superoxide anion (O2•-) generation, elastase release, CD11b expression, adhesion, and chemotactic migration in human neutrophils. LGE selectively inhibited the fMLF-induced phosphorylation of JNK but not p38, ERK, or Akt in human neutrophils. LGE also decreased the intracellular Ca2+ levels ([Ca2+]i) in fMLF-activated human neutrophils. However, a specific JNK inhibitor inhibited the fMLF-induced O2•- generation and CD11b expression, but it had no effect on [Ca2+]i in human neutrophils. CONCLUSIONS LGE exhibited anti-inflammatory activities in fMLF-activated human neutrophils. The pharmacological mechanisms of LGE-repressed neutrophilic inflammation were through two independent pathways, JNK signaling and calcium mobilization. Our results suggested that LGE holds the potential to be developed as an anti-inflammatory botanical medicine.
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Affiliation(s)
- Kuei-Hung Lai
- Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan; Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei, 11031, Taiwan.
| | - Po-Jen Chen
- Department of Cosmetic Science, Providence University, Taichung, 43301, Taiwan.
| | - Chih-Chuan Chen
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.
| | - Sien-Hung Yang
- Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, 33305, Taiwan; School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.
| | - Mohamed El-Shazly
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, Cairo, 11566, Egypt; Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11432, Egypt.
| | - Yu-Chia Chang
- Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan.
| | - Yi-Hsuan Wu
- Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan.
| | - Yi-Hsiu Wu
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.
| | - Yi-Hsuan Wang
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.
| | - Hsi-Lung Hsieh
- Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan; Department of Nursing, Division of Basic Medical Sciences, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan; Department of Neurology, Chang Gung Memorial Hospital, Taoyuan, 33305, Taiwan.
| | - Tsong-Long Hwang
- Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan; Graduate Institute of Natural Products, School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, 33302, Taiwan; Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, 33303, Taiwan; Department of Anaesthesiology, Chang Gung Memorial Hospital, Taoyuan, 33305, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
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Su SB, Qin SY, Xian XL, Huang FF, Huang QL, ZhangDi HJ, Jiang HX. Interleukin-22 regulating Kupffer cell polarization through STAT3/Erk/Akt crosstalk pathways to extenuate liver fibrosis. Life Sci 2021; 264:118677. [PMID: 33129875 DOI: 10.1016/j.lfs.2020.118677] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/14/2020] [Accepted: 10/24/2020] [Indexed: 12/19/2022]
Abstract
AIMS Interleukin (IL)-22 activates multiple signaling pathways to exert anti-inflammatory effects, but few studies have examined whether and how IL-22 may shift macrophage polarization between M1 (pro-inflammatory) and M2 (anti-inflammatory) states and thereby influence the progression of hepatic fibrosis. MAIN METHODS Utilized CCl4 to induce liver fibrosis in mice, detected the role of IL-22 in inhibiting liver fibrosis by regulating Kupffer cells (KCs) polarization in vivo and in vitro. U937 cells were used to confirm the mechanism of IL-22 regulating macrophage polarization via the STAT3/Erk/Akt pathways. Human liver specimens were collected to verify the correlation between the levels of IL-22 and KCs during liver fibrogenesis. KEY FINDINGS During CCl4-induced liver fibrosis progression in mice, adding exogenous IL-22 significantly inhibited pro-fibrogenic and macrophage phenotype-altering factors secreted by M1-KCs, and it increased the number of M2-KCs. In co-cultures of hepatic stellate cells and KCs from mice treated with IL-22, a high M2/M1-KCs ratio inhibited collagen production and stellate cell activation. These results suggest that IL-22 can increase the ratio of M2-KCs to M1-KCs and thereby attenuate the progression of liver fibrosis. Mechanistic studies in vitro showed that IL-22 promoted polarization of lipopolysaccharide-treated U937 macrophages from M1 to M2. The cytokine exerted these effects by activating the STAT3 pathway while suppressing Erk1/2 and Akt pathways. Furthermore, immunofluorescent staining in human liver specimens confirmed that IL-22 levels positively correlated with the number of M2-KCs during liver fibrogenesis. SIGNIFICANCE IL-22 regulates the STAT3/Erk/Akt to increase the M2/M1-KCs ratio and thereby slow liver fibrogenesis.
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Affiliation(s)
- Si-Biao Su
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Shan-Yu Qin
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Xiao-Long Xian
- Graduate School of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Fei-Fei Huang
- Graduate School of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Qiu-Lan Huang
- Graduate School of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Han-Jing ZhangDi
- Graduate School of Guangxi Medical University, Nanning 530021, Guangxi Province, China
| | - Hai-Xing Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Province, China.
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Miao Y, Ishfaq M, Liu Y, Wu Z, Wang J, Li R, Qian F, Ding L, Li J. Baicalin attenuates endometritis in a rabbit model induced by infection with Escherichia coli and Staphylococcus aureus via NF-κB and JNK signaling pathways. Domest Anim Endocrinol 2021; 74:106508. [PMID: 32861957 DOI: 10.1016/j.domaniend.2020.106508] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/20/2020] [Accepted: 06/02/2020] [Indexed: 12/12/2022]
Abstract
In this study, a rabbit endometritis model was developed to study cow endometritis. In addition, the protective effects of baicalin (a flavonoid) against endometritis were investigated. Clinical symptoms, differential leukocyte counting, uterine secretion smear microscopy and chemical examination, urine testing, and signs of necropsy showed abnormal changes and inflammatory responses in the uterus of rabbits. Histopathological results revealed visible inflammatory exudates and blood spots between intercellular spaces which confirmed that the rabbit endometritis model was successfully developed. Most importantly, these inflammatory signs were partially attenuated with baicalin treatment. The data revealed that the increased body temperature and leukocyte cells, pus, and the detachment of epithelial cells were alleviated with baicalin administration in a dose-dependent manner. Histopathological tissue changes such as inflammatory cells infiltrates, hyperemia, hemorrhages, and shedding of epithelial cells were partially attenuated with baicalin treatment. In addition, the mRNA expression of inflammation-related genes (iNOS, IL-1β, TNF-α, IL-10, IL-4, and IL-6) was significantly altered in RAW264.7 cells after LPS treatment. Further, the phosphorylated protein expression of JNK, p65, and IκBα were significantly reduced with LPS treatment. Intriguingly, baicalin pretreatment reversed the alteration in mRNA expression of inflammation-related genes and significantly reduced the phosphorylation of JNK, p65, and IκBα. In summary, our results suggest that baicalin has protective effects on bacterial-induced endometritis in rabbits that involve the suppression of NF-κB and JNK signaling pathways and pro-inflammatory cytokines.
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Affiliation(s)
- Y Miao
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - M Ishfaq
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Y Liu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Z Wu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - J Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - R Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - F Qian
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - L Ding
- College of Life Science, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China.
| | - J Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Xiangfang District, Harbin 150030, China.
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Noor SI, Hoffmann M, Rinis N, Bartels MF, Winterhalter PR, Hoelscher C, Hennig R, Himmelreich N, Thiel C, Ruppert T, Rapp E, Strahl S. Glycosyltransferase POMGNT1 deficiency strengthens N-cadherin-mediated cell-cell adhesion. J Biol Chem 2021; 296:100433. [PMID: 33610554 PMCID: PMC7994789 DOI: 10.1016/j.jbc.2021.100433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/08/2021] [Accepted: 02/16/2021] [Indexed: 12/12/2022] Open
Abstract
Defects in protein O-mannosylation lead to severe congenital muscular dystrophies collectively known as α-dystroglycanopathy. A hallmark of these diseases is the loss of the O-mannose-bound matriglycan on α-dystroglycan, which reduces cell adhesion to the extracellular matrix. Mutations in protein O-mannose β1,2-N-acetylglucosaminyltransferase 1 (POMGNT1), which is crucial for the elongation of O-mannosyl glycans, have mainly been associated with muscle-eye-brain (MEB) disease. In addition to defects in cell-extracellular matrix adhesion, aberrant cell-cell adhesion has occasionally been observed in response to defects in POMGNT1. However, specific molecular consequences of POMGNT1 deficiency on cell-cell adhesion are largely unknown. We used POMGNT1 knockout HEK293T cells and fibroblasts from an MEB patient to gain deeper insight into the molecular changes in POMGNT1 deficiency. Biochemical and molecular biological techniques combined with proteomics, glycoproteomics, and glycomics revealed that a lack of POMGNT1 activity strengthens cell-cell adhesion. We demonstrate that the altered intrinsic adhesion properties are due to an increased abundance of N-cadherin (N-Cdh). In addition, site-specific changes in the N-glycan structures in the extracellular domain of N-Cdh were detected, which positively impact on homotypic interactions. Moreover, in POMGNT1-deficient cells, ERK1/2 and p38 signaling pathways are activated and transcriptional changes that are comparable with the epithelial-mesenchymal transition (EMT) are triggered, defining a possible molecular mechanism underlying the observed phenotype. Our study indicates that changes in cadherin-mediated cell-cell adhesion and other EMT-related processes may contribute to the complex clinical symptoms of MEB or α-dystroglycanopathy in general and suggests that the impact of changes in O-mannosylation on N-glycosylation has been underestimated.
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Affiliation(s)
- Sina Ibne Noor
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany
| | - Marcus Hoffmann
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Natalie Rinis
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany
| | - Markus F Bartels
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany
| | - Patrick R Winterhalter
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany
| | - Christina Hoelscher
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany
| | - René Hennig
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany; glyXera GmbH, Magdeburg, Germany
| | - Nastassja Himmelreich
- Center for Child and Adolescent Medicine, Department Pediatrics I, University of Heidelberg, Heidelberg, Germany
| | - Christian Thiel
- Center for Child and Adolescent Medicine, Department Pediatrics I, University of Heidelberg, Heidelberg, Germany
| | - Thomas Ruppert
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Erdmann Rapp
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany; glyXera GmbH, Magdeburg, Germany
| | - Sabine Strahl
- Centre for Organismal Studies (COS), Glycobiology, Heidelberg University, Heidelberg, Germany.
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Choi W, Yang AX, Sieve A, Kuo SH, Mudalagiriyappa S, Vieson M, Maddox CW, Nanjappa SG, Lau GW. Pulmonary Mycosis Drives Forkhead Box Protein A2 Degradation and Mucus Hypersecretion through Activation of the Spleen Tyrosine Kinase-Epidermal Growth Factor Receptor-AKT/Extracellular Signal-Regulated Kinase 1/2 Signaling. Am J Pathol 2021; 191:108-130. [PMID: 33069717 PMCID: PMC7786105 DOI: 10.1016/j.ajpath.2020.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 09/08/2020] [Accepted: 09/23/2020] [Indexed: 10/23/2022]
Abstract
Pulmonary mycoses are difficult to treat and detrimental to patients. Fungal infections modulate the lung immune response, induce goblet cell hyperplasia and metaplasia, and mucus hypersecretion in the airways. Excessive mucus clogs small airways and reduces pulmonary function by decreasing oxygen exchange, leading to respiratory distress. The forkhead box protein A2 (FOXA2) is a transcription factor that regulates mucus homeostasis in the airways. However, little is known whether pulmonary mycosis modulates FOXA2 function. Herein, we investigated whether Blastomyces dermatitidis and Histoplasma capsulatum-infected canine and feline lungs and airway epithelial cells could serve as higher animal models to examine the relationships between fungal pneumonia and FOXA2-regulated airway mucus homeostasis. The results indicate that fungal infection down-regulated FOXA2 expression in airway epithelial cells, with concomitant overexpression of mucin 5AC (MUC5AC) and mucin 5B (MUC5B) mucins. Mechanistic studies reveal that B. dermatitidis infection, as well as β-glucan exposure, activated the Dectin-1-SYK-epidermal growth factor receptor-AKT/extracellular signal-regulated kinase 1/2 signaling pathway that inhibits the expression of FOXA2, resulting in overexpression of MUC5AC and MUC5B in canine airway cells. Further understanding of the role of FOXA2 in mucus hypersecretion may lead to novel therapeutics against excessive mucus in both human and veterinary patients with pulmonary mycosis.
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Affiliation(s)
- Woosuk Choi
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Alina X Yang
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Aaron Sieve
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Shanny H Kuo
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Srinivasu Mudalagiriyappa
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Miranda Vieson
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois; Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Carol W Maddox
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois; Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Som G Nanjappa
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Gee W Lau
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois.
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Zhang HJ, Cui ZH, Liu M, Min TQ, Xiao X, Wang ZQ, Tao YX. Pharmacological characterization of three chicken melanocortin-3 receptor mutants. Domest Anim Endocrinol 2021; 74:106507. [PMID: 32841887 DOI: 10.1016/j.domaniend.2020.106507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/01/2020] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
The melanocortin-3 receptor (MC3R) is a G protein-coupled receptor and potentially important in production traits. Three naturally occurring mutations (M54L, G104S, and L151R) in chicken MC3R (cMC3R) were reported previously to be associated with production traits. Here, we inserted the full-length cMC3R coding sequence into pcDNA3.1(+) and generated the 3 mutations by site-directed mutagenesis. The total and cell surface expression of the receptors was measured by flow cytometry. We analyzed the pharmacological characteristics, including binding and cyclic adenosine monophosphate (cAMP) and mitogen-activated protein kinase (MAPK) signaling, using 6 ligands ([Nle4, D-Phe7]-α-melanocyte stimulating hormone (MSH), α-, β-, γ-, and D-Trp8-γ-MSHs, and agouti-related peptide). All mutants had similar total and cell surface expression as the wild-type (WT) cMC3R. M54L had similar pharmacological properties as the WT cMC3R. G104S did not exhibit any specific binding but had minimal response to α-, β-, γ-, and D-Trp8-γ-MSH, although it generated 24% WT response when stimulated by NDP-MSH. Although L151R had normal binding, the responses to agonists were reduced to approximately 25% of that of the WT. In MAPK signaling, all 3 mutants showed significantly increased agonist-stimulated phosphorylation of extracellular signal-regulated protein kinases 1/2, indicating the existence of biased signaling at G104S and L151R. In summary, our studies demonstrated that although all 3 mutations are significantly associated with production traits, only G104S and L151R had severe defects in receptor pharmacology. How M54L might cause production trait differences remains to be investigated.
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Affiliation(s)
- H-J Zhang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China; Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Z-H Cui
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China
| | - M Liu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China
| | - T-Q Min
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China
| | - X Xiao
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China
| | - Z-Q Wang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China.
| | - Y-X Tao
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA.
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Um Y, Eo HJ, Kim HJ, Kim K, Jeon KS, Jeong JB. Wild simulated ginseng activates mouse macrophage, RAW264.7 cells through TRL2/4-dependent activation of MAPK, NF-κB and PI3K/AKT pathways. J Ethnopharmacol 2020; 263:113218. [PMID: 32755650 DOI: 10.1016/j.jep.2020.113218] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/21/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ginseng (Panax ginseng Meyer) is a very well-known traditional herbal medicine that has long been used to enhance the body's immunity. Because it is a type of ginseng, it is believed that wild simulated ginseng (WSG) also has immune-enhancing activity. However, study on the immune-enhancing activity of WSG is quite insufficient compared to ginseng. AIM OF THE STUDY In this study, we evaluated immune-enhancing activity of WSG through macrophage activation to provide a scientific basis for the immune enhancing activity of WSG. MATERIALS AND METHODS The effect of WSG on viability of RAW264.7 cells was evaluated by MTT assay. The NO level was measured by Griess reagent. The expression levels of mRNA or protein in WSG-treated RAW264.7 cells were analyzed by RT-PCR and Western blot, respectively. RESULTS WSG increased the production of immunomodulators such as NO, iNOS, COX-2, IL-1β, IL-6 and TNF-α and activated phagocytosis in mouse macrophages RAW264.7 cells. Inhibition of TLR2 and TLR4 reduced the production of immunomodulators induced by WSG. WSG activated MAPK, NF-κB and PI3K/AKT signaling pathways, and inhibition of such signaling activation blocked WSG-mediated production of immunomodulators. In addition, activation of MAPK, NF-κB and PI3K/AKT signaling pathways by WSG was reversed by TLR2 or TLR4 inhibition. CONCLUSION Based on the results of this study, WSG is thought to activate macrophages through the production of immunomodulators and phagocytosis activation through TLR2/4-dependent MAPK, NF-κB and PI3K/AKT signaling pathways. Therefore, it is thought that WSG have the potential to be used as an agent for enhancing immunity.
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Affiliation(s)
- Yurry Um
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju, 36040, Republic of Korea.
| | - Hyun Ji Eo
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju, 36040, Republic of Korea.
| | - Hyun Jun Kim
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju, 36040, Republic of Korea.
| | - Kiyoon Kim
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju, 36040, Republic of Korea.
| | - Kwon Seok Jeon
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju, 36040, Republic of Korea.
| | - Jin Boo Jeong
- Department of Medicinal Plant Resources, Andong National University, Andong, 36729, Republic of Korea.
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Zhang W, Man R, Yu X, Yang H, Yang Q, Li J. Hydroxytyrosol enhances cisplatin-induced ototoxicity: Possible relation to the alteration in the activity of JNK and AIF pathways. Eur J Pharmacol 2020; 887:173338. [PMID: 32781170 DOI: 10.1016/j.ejphar.2020.173338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 10/23/2022]
Abstract
Hydroxytyrosol (HT), a polyphenol widely contained as an ester in olive fruits and olive leaves, exhibits a broad spectrum of effectiveness. The present study was designed to investigate the effect of HT alone as well as in the combination with cisplatin on the House Ear Institute-Organ of Corti 1 cells (HEI-OC1) and C57BL/6 cochlear hair cells in vitro. The cell viability was measured by cell counting kit-8 (CCK8) assay. The levels of reactive oxygen species were evaluated by Dichloro-dihydro-fluorescein diacetate (DCFH-DA) staining. The expression of phosphorylated Jun N-terminal kinase (p-JNK) and cleaved-caspase 3 was assessed by Western blotting. The apoptosis was detected by terminal deoxynucleotidyl transferase (TdT) dUTP Nick-End Labeling (TUNEL) staining. The distribution of apoptosis inducing factor (AIF) was determined by immunofluorescent staining. HT alleviated the levels of reactive oxygen species in both untreated state and after cisplatin stimulus. However, HT at concentration of 100 μM decreased the cell viability of HEI-OC1 from 100 ± 17.38% in control group to 50.17 ± 1.89% and increased the expression of p-JNK and c-caspase 3 from 0.62 ± 0.10, 0.20 ± 0.050 in the control group to 1.24 ± 0.18, 0.85 ± 0.18 in the group treated with 30 μM cisplatin, as well as to 1.64 ± 0.14, 1.44 ± 0.12 in the group with 30 μM cisplatin +100 μM HT, respectively. Meanwhile, HT triggered AIF transferring to nuclei and, also, led to cochlear HCs arranging disorderly and missing. Moreover, HT elevated the expression of p-JNK and c-caspase 3 from 1.00 ± 0.27, 1.00 ± 0.26 in the control group to 2.23 ± 0.24, 22.87 ± 3.80 in the group with 30 μM cisplatin, and to 2.75 ± 0.23, 31.56 ± 3.86 in the group with 30 μM cisplatin+100 μM HT correspondingly. Taken together, data from this work reveal that HT itself possesses toxic effect on HCs mainly thorough AIF-dependent apoptosis, while, it aggravates the ototoxicity-caused by cisplatin via both JNK and AIF pathways related apoptosis. Findings from this work offer clear evidence that that HT might not be recommended to utilize for preventing cisplatin-induced ototoxicity.
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Affiliation(s)
- Weiwei Zhang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, PR China; Department of Otorhinolaryngology Head and Neck Surgery, Tengzhou Central People's Hospital, Tengzhou, Shandong, PR China
| | - Rongjun Man
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, PR China; Department of Otolaryngology Head and Neck Surgery, Zibo Central Hospital, Zibo, Shandong, PR China
| | - Xiaoyu Yu
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, PR China
| | - Huiming Yang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, PR China
| | - Qianqian Yang
- Department of Pathology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, PR China
| | - Jianfeng Li
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, PR China; Institute of Eye and ENT, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250021, China.
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Lv Y, Wang X, Li X, Xu G, Bai Y, Wu J, Piao Y, Shi Y, Xiang R, Wang L. Nucleotide de novo synthesis increases breast cancer stemness and metastasis via cGMP-PKG-MAPK signaling pathway. PLoS Biol 2020; 18:e3000872. [PMID: 33186350 PMCID: PMC7688141 DOI: 10.1371/journal.pbio.3000872] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 11/25/2020] [Accepted: 09/24/2020] [Indexed: 02/04/2023] Open
Abstract
Metabolic reprogramming to fulfill the biosynthetic and bioenergetic demands of cancer cells has aroused great interest in recent years. However, metabolic reprogramming for cancer metastasis has not been well elucidated. Here, we screened a subpopulation of breast cancer cells with highly metastatic capacity to the lung in mice and investigated the metabolic alternations by analyzing the metabolome and the transcriptome, which were confirmed in breast cancer cells, mouse models, and patients' tissues. The effects and the mechanisms of nucleotide de novo synthesis in cancer metastasis were further evaluated in vitro and in vivo. In our study, we report an increased nucleotide de novo synthesis as a key metabolic hallmark in metastatic breast cancer cells and revealed that enforced nucleotide de novo synthesis was enough to drive the metastasis of breast cancer cells. An increased key metabolite of de novo synthesis, guanosine-5'-triphosphate (GTP), is able to generate more cyclic guanosine monophosphate (cGMP) to activate cGMP-dependent protein kinases PKG and downstream MAPK pathway, resulting in the increased tumor cell stemness and metastasis. Blocking de novo synthesis by silencing phosphoribosylpyrophosphate synthetase 2 (PRPS2) can effectively decrease the stemness of breast cancer cells and reduce the lung metastasis. More interestingly, in breast cancer patients, the level of plasma uric acid (UA), a downstream metabolite of purine, is tightly correlated with patient's survival. Our study uncovered that increased de novo synthesis is a metabolic hallmark of metastatic breast cancer cells and its metabolites can regulate the signaling pathway to promote the stemness and metastasis of breast cancer.
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Affiliation(s)
- Yajing Lv
- School of Medicine, Nankai University, Tianjin, China
| | | | - Xiaoyu Li
- School of Medicine, Nankai University, Tianjin, China
| | - Guangwei Xu
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yuting Bai
- School of Medicine, Nankai University, Tianjin, China
| | - Jiayi Wu
- School of Medicine, Nankai University, Tianjin, China
| | - Yongjun Piao
- School of Medicine, Nankai University, Tianjin, China
| | - Yi Shi
- School of Medicine, Nankai University, Tianjin, China
- * E-mail: (LW); (RX); (YS)
| | - Rong Xiang
- School of Medicine, Nankai University, Tianjin, China
- The International Collaborative Laboratory for Biological Medicine of the Ministry of Education, Nankai University School of Medicine, Tianjin, China
- * E-mail: (LW); (RX); (YS)
| | - Longlong Wang
- School of Medicine, Nankai University, Tianjin, China
- * E-mail: (LW); (RX); (YS)
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Tanner MA, Thomas TP, Maitz CA, Grisanti LA. β2-Adrenergic Receptors Increase Cardiac Fibroblast Proliferation Through the Gαs/ERK1/2-Dependent Secretion of Interleukin-6. Int J Mol Sci 2020; 21:ijms21228507. [PMID: 33198112 PMCID: PMC7697911 DOI: 10.3390/ijms21228507] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Fibroblasts are an important resident cell population in the heart involved in maintaining homeostasis and structure during normal conditions. They are also crucial in disease states for sensing signals and initiating the appropriate repair responses to maintain the structural integrity of the heart. This sentinel role of cardiac fibroblasts occurs, in part, through their ability to secrete cytokines. β-adrenergic receptors (βAR) are also critical regulators of cardiac function in the normal and diseased state and a major therapeutic target clinically. βAR are known to influence cytokine secretion in various cell types and they have been shown to be involved in cytokine production in the heart, but their role in regulating cytokine production in cardiac fibroblasts is not well understood. Thus, we hypothesized that βAR activation on cardiac fibroblasts modulates cytokine production to influence fibroblast function. Using primary fibroblast cultures from neonatal rats and adult mice, increased interleukin (IL)-6 expression and secretion occurred following β2AR activation. The use of pharmacological inhibitors and genetic manipulations showed that IL-6 elevations occurred through the Gαs-mediated activation of ERK1/2 and resulted in increased fibroblast proliferation. In vivo, a lack of β2AR resulted in increased infarct size following myocardial infarction and impaired wound closure in a murine dermal wound healing assay. These findings identify an important role for β2AR in regulating fibroblast proliferation through Gαs/ERK1/2-dependent alterations in IL-6 and may lead to the development of improved heart failure therapies through targeting fibrotic function of β2AR.
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Affiliation(s)
- Miles A. Tanner
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Toby P. Thomas
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
| | - Charles A. Maitz
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA;
| | - Laurel A. Grisanti
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA; (M.A.T.); (T.P.T.)
- Correspondence: ; Tel.: +573-884-8852
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Zubair H, Lim IK, Safi SZ, Rehman F, Imran M. Akt Downregulates B-Cell Translocation Gene-2 Expression Via Erk1/2 Inhibition for Proliferation of Cancer Cells. Ann Clin Lab Sci 2020; 50:711-716. [PMID: 33334784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
B-cell translocation gene 2 (Btg2) is a tumor suppressor gene that is implicated in many biological processes. Akt is a serine/threonine kinase which was originally discovered as an oncogene. The prognostic value of Akt activation in some types of cancers and its effect on tumor suppressor genes remains to be fully elucidated. In the current research we have investigated the Akt-mediated downregulation of Btg2 that increased cells proliferation and cells survival. Human leukemia HL-60, THP-1 and colon cancer DLD-1 cells were used in this study. Inhibition of Akt with LY294002 significantly increased Btg2 mRNA expression while activation of Akt with insulin decreased Btg2 expression. Contrary to this, treatment of cells with U0126, a MAPK kinase inhibitor, significantly abrogated Btg2 expression. Moreover, LY294002 treatment increased Erk1/2 activation, decreased cells proliferation and cells viability while activation of Akt by insulin led to an increase in cells survival and cells division. Exogenous expression of Btg2 decreased cells proliferation both in the presence and absence of insulin and arrested cells at G1 phase. Akt negatively regulates Btg2 via Erk1/2 inhibition that lead to an increase in cells survival and cells proliferation. This elucidates a new mechanism for Btg2 regulation and Akt mediated tumorgenicity.
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Affiliation(s)
- Hina Zubair
- Biochemistry Section, Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan
| | - In Kyoung Lim
- Department of Biochemistry and Molecular Biology, Division of Molecular Medicine, Ajou University School of Medicine and Graduate School, Suwon, Korea
| | - Sher Zaman Safi
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Fozia Rehman
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Muhammad Imran
- Biochemistry Section, Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan
- Department of Biochemistry and Molecular Biology, Division of Molecular Medicine, Ajou University School of Medicine and Graduate School, Suwon, Korea
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Wang J, Zhang W, Ma B, Zhang H, Fan Z, Li M, Li X. A novel biscoumarin derivative dephosphorylates ERK and alleviates apoptosis induced by mitochondrial oxidative damage in ischemic stroke mice. Life Sci 2020; 264:118499. [PMID: 33141045 DOI: 10.1016/j.lfs.2020.118499] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 11/17/2022]
Abstract
AIM We previously reported the protective effects of biscoumarin derivatives against oxidative stress, but effects of the derivative on mitochondrial oxidative damage induced apoptosis in ischemic stroke remains unknown. METHODS Primary neurons were subjected to oxygen and glucose deprivation (OGD) for the in vitro simulation of ischemic stroke, and an ischemic stroke model was established in mice by operation of middle cerebral artery occlusion (MCAO). RESULTS The results indicated that the nontoxic concentration range of biscoumarin derivative Comp. B in neurons was from 0 to 30 μg/ml and the optimal protective concentration was 20 μg/ml. Treatment with Comp. B increased the cell survival rate and alleviated mitochondrial oxidative damage and apoptosis in OGD-treated neurons. Comp. B reduced the ratio of Bax/Bcl-2, inhibited the phosphorylation of ERK, and thus alleviated apoptosis in OGD-treated neurons. Further research demonstrated that the dephosphorylation effect on ERK of Comp. B is a key factor in alleviating apoptosis in neurons induced by OGD injury. Furthermore, Comp. B reduced the infarct volume, improved neurobehavioural score, and alleviated morphological changes and brain apoptosis in MCAO mice. CONCLUSION The novel biscoumarin derivative Comp. B alleviates mitochondrial oxidative damage and apoptosis in ischemic stroke mice. These findings might provide new insights that will aid in elucidating the effect of biscoumarin derivative against cerebral ischemic reperfusion injury and support the new development of Comp. B as a potential treatment for ischemic stroke.
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Affiliation(s)
- Jun Wang
- Department of Digestive Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wentong Zhang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Bo Ma
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China
| | - Hongchen Zhang
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhaoyang Fan
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China
| | - Mingkai Li
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China.
| | - Xia Li
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
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Li Z, Oh H, Cung M, Marquez SJ, Sun J, Hammad H, Janssens S, Pouliot P, Lambrecht BN, Yang YS, Shim JH, Greenblatt MB. TAOK3 is a MAP3K contributing to osteoblast differentiation and skeletal mineralization. Biochem Biophys Res Commun 2020; 531:497-502. [PMID: 32807497 PMCID: PMC7494564 DOI: 10.1016/j.bbrc.2020.07.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 07/12/2020] [Indexed: 11/18/2022]
Abstract
Current anabolic drugs to treat osteoporosis and other disorders of low bone mass all have important limitations in terms of toxicity, contraindications, or poor efficacy in certain contexts. Addressing these limitations will require a better understanding of the molecular pathways, such as the mitogen activated protein kinase (MAPK) pathways, that govern osteoblast differentiation and, thereby, skeletal mineralization. Whereas MAP3Ks functioning in the extracellular signal-regulated kinases (ERK) and p38 pathways have been identified in osteoblasts, MAP3Ks mediating proximal activation of the c-Jun N-terminal kinase (JNK) pathway have yet to be identified. Here, we demonstrate that thousand-and-one kinase 3 (TAOK3, MAP3K18) functions as an upstream activator of the JNK pathway in osteoblasts both in vitro and in vivo. Taok3-deficient osteoblasts displayed defective JNK pathway activation and a marked decrease in osteoblast differentiation markers and defective mineralization, which was also confirmed using TAOK3 deficient osteoblasts derived from human MSCs. Additionally, reduced expression of Taok3 in a murine model resulted in osteopenia that phenocopies aspects of the Jnk1-associated skeletal phenotype such as occipital hypomineralization. Thus, in vitro and in vivo evidence supports TAOK3 as a proximal activator of the JNK pathway in osteoblasts that plays a critical role in skeletal mineralization.
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Affiliation(s)
- Zan Li
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA; Department of Sports Medicine & Research Center of Sports Medicine, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China
| | - Hwanhee Oh
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Michelle Cung
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Sofia Jenia Marquez
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Jun Sun
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Hamida Hammad
- VIB Inflammation Research Center, Department of Respiratory Medicine, Ghent University, Ghent, Belgium; Department of Pulmonary Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Sophie Janssens
- VIB Inflammation Research Center, Department of Respiratory Medicine, Ghent University, Ghent, Belgium; Department of Pulmonary Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Philippe Pouliot
- VIB Inflammation Research Center, Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Bart N Lambrecht
- VIB Inflammation Research Center, Department of Respiratory Medicine, Ghent University, Ghent, Belgium; Department of Pulmonary Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Yeon-Suk Yang
- Division of Rheumatology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA01605, USA
| | - Jae-Hyuck Shim
- Division of Rheumatology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA01605, USA.
| | - Matthew B Greenblatt
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10065, USA.
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Yang DP, Huang WY, Chen G, Chen SW, Yang J, He RQ, Huang SN, Gan TQ, Ma J, Yang LJ, Song JH, Mo JX, Tang ZQ, Li CB, Zhou HF, Kong JL. Clinical significance of transcription factor RUNX2 in lung adenocarcinoma and its latent transcriptional regulating mechanism. Comput Biol Chem 2020; 89:107383. [PMID: 33032037 DOI: 10.1016/j.compbiolchem.2020.107383] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/21/2020] [Accepted: 09/20/2020] [Indexed: 02/06/2023]
Abstract
RUNX family transcription factor 2 (RUNX2) overexpression has been found in various human malignancies. However, the expression levels of RUNX2 mRNA and protein in lung adenocarcinoma (LUAD) were not investigated. This study aims to thoroughly analysis the expression level and potential mechanisms of RUNX2 mRNA in LUAD. We applied in-house immunohistochemistry, high-throughput RNA-sequencing, and gene microarrays to comprehensively investigate the expression level of RUNX2 in LUAD. A pool standard mean difference (SMD) and summary receiver operating characteristic curves (SROC) were calculated to assess the integrated expression value of RUNX2 in LUAD. The hazard ratios (HRs) were integrated to evaluate the overall prognostic effect of RUNX2 on the LUAD patients. The differentially expressed genes (DEGs) of LUAD, the potential target genes of RUNX2, and its co-expressed genes were overlapped to obtain a set of specific genes for GO and KEGG enrichment analyses. RUNX2 overexpression in LUAD was validated using a large number of cases (2 418 LUAD and 1 574 non-tumor lung samples). The pooled SMD was 0.85 (95 % CI: 0.64-1.05) and the area under the curve (AUC) of the SROC was 0.86 (95 %CI: 0.83-0.89). The integrated HR was 1.20 [1.04-1.38], indicating that increased expression of RUNX2 was an independent risk factor for the poor survival of the LUAD patients. RUNX2 and its transcriptionally regulates potential target genes may promote cell proliferation and drug resistance of LUAD by modulating the cell cycle and MAPK signaling pathways. RUNX2 can provide new research directions for targeted drug therapy and drug resistance for LUAD treatment.
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Affiliation(s)
- Da-Ping Yang
- Department of Pathology, Guigang People's Hospital of Guangxi/The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, Guangxi 537100, PR China.
| | - Wan-Ying Huang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Shang-Wei Chen
- Department of Cardio-Thoracic Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Jie Yang
- Department of Pharmacology, School of Pharmacy, Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Rong-Quan He
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Su-Ning Huang
- Department of Radiotherapy, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Ting-Qing Gan
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, PR China.
| | - Jie Ma
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Lin-Jie Yang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Jian-Hua Song
- Department of Pathology, Guigang People's Hospital of Guangxi/The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, Guangxi 537100, PR China.
| | - Jun-Xian Mo
- Department of Cardio-Thoracic Surgery, The Seventh Affiliated Hospital of Guangxi Medical University / Wuzhou Gongren Hospital, Wuzhou, Guangxi 543000, PR China.
| | - Zhong-Qing Tang
- Department of Cardio-Thoracic Surgery, The Seventh Affiliated Hospital of Guangxi Medical University / Wuzhou Gongren Hospital, Wuzhou, Guangxi 543000, PR China.
| | - Chang-Bo Li
- Department of Cardio-Thoracic Surgery, The Seventh Affiliated Hospital of Guangxi Medical University / Wuzhou Gongren Hospital, Wuzhou, Guangxi 543000, PR China.
| | - Hua-Fu Zhou
- Department of Cardio-Thoracic Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
| | - Jin-Liang Kong
- Ward of Pulmonary and Critical Care Medicine, Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, PR China.
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Liu Y, Qin P, Wu R, Du L, Li F. ERas regulates cell proliferation and epithelial-mesenchymal transition by affecting Erk/Akt signaling pathway in pancreatic cancer. Hum Cell 2020; 33:1186-1196. [PMID: 32700262 PMCID: PMC7505876 DOI: 10.1007/s13577-020-00401-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer is the fourth most common lethal malignancy with an overall 5-year survival rate of less than 5%. ERas, a novel Ras family member, was first identified in murine embryonic stem cells and is upregulated in various cancers. However, the expression and potential role of ERas in pancreatic cancer have not been investigated. In this study, we found that ERas mRNA and protein were upregulated in pancreatic cancer tissues and cells compared with controls. Knockdown of ERas in pancreatic cancer cells by siRNA significantly decreased cell proliferation, colony formation, migration, and invasion and promoted cell apoptosis in vitro. Epithelial-mesenchymal transition (EMT) is closely related to tumor progression. We observed a significant decrease in N-cadherin expression in pancreatic cancer cells in response to ERas gene silencing by immunofluorescence assay and western blot. Furthermore, tumor growth and EMT were inhibited in xenografts derived from pancreatic cancer cells with ERas downregulation. We further investigated the regulatory mechanisms of ERas in pancreatic cancer and found that ERas may activate the Erk/Akt signaling pathway. Moreover, Erk inhibitor decreased pancreatic cancer cells proliferation and colony formation activities. Our data suggest that targeting ERas and its relevant signaling pathways might represent a novel therapeutic approach for the treatment of pancreatic cancer.
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Affiliation(s)
- Yang Liu
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080, China
| | - Peng Qin
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Rong Wu
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080, China
| | - Lianfang Du
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080, China.
| | - Fan Li
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080, China.
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Deng S, Sherchan P, Jin P, Huang L, Travis Z, Zhang JH, Gong Y, Tang J. Recombinant CCL17 Enhances Hematoma Resolution and Activation of CCR4/ERK/Nrf2/CD163 Signaling Pathway After Intracerebral Hemorrhage in Mice. Neurotherapeutics 2020; 17:1940-1953. [PMID: 32783091 PMCID: PMC7851239 DOI: 10.1007/s13311-020-00908-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hematoma is a crucial factor leading to poor prognosis after intracerebral hemorrhage (ICH). Promoting microglial phagocytosis to enhance hematoma resolution may be an important therapeutic target for recovery after ICH. C-C chemokine receptor 4 (CCR4) is important for regulating immune balance in the central nervous system. However, whether CCR4 activation can attenuate hematoma after ICH remains unknown. We aimed to evaluate whether CCL17 (a specific ligand of CCR4) treatment can promote hematoma resolution through CCR4/ERK/Nrf2/CD163 pathway after ICH. A total of 261 adult male CD1 mice were used. Mice were subjected to intrastriatal injection of autologous blood to induce ICH and randomly assigned to receive recombinant CCL17 (rCCL17) or vehicle which was administered intranasally at 1 h after ICH. To elucidate the underlying mechanism, C021, a selective inhibitor of CCR4 and ML385 and a selective inhibitor of Nrf2 were administered 1 h prior to ICH induction. Clustered regularly interspaced short palindromic repeats (CRISPR) knockout for CD163 was administered by intracerebroventricular injection at 48 h before ICH. Brain edema, short- and long-term neurobehavior evaluation, hematoma volume, hemoglobin content, western blot, and immunofluorescence staining were performed. Endogenous CCL17, CCR4, and CD163 expression increased and peaked at 72 h after ICH. CCR4 was expressed by microglia. CCR4 activation with rCCL17 significantly improved neurobehavioral scores and reduced hematoma volume and brain edema compared with vehicle. Moreover, rCCL17 treatment significantly promoted phosphorylation of ERK1/2, increased the expression Nrf2, and upregulated CD163 expression after ICH. The protective effects of rCCL17 were abolished by administration of C021, ML385, and CD163 CRISPR knockout. This study demonstrated that CCR4 activation with rCCL17 promoted hematoma resolution by increasing CD163 expression and CCR4/ERK/Nrf2 pathway activation after ICH, thereby reducing brain edema and improving neurological function. Overall, our study suggests that CCR4 activation may be a potential therapeutic strategy to attenuate hematoma in early brain injury after ICH.
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Affiliation(s)
- Shuixiang Deng
- Department of Critical Care Medicine, HuaShan Hospital, Fudan University, 12 Middle WuLuMuQi, Shanghai, 200040, China
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - Peng Jin
- Department of Critical Care Medicine, HuaShan Hospital, Fudan University, 12 Middle WuLuMuQi, Shanghai, 200040, China
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - Lei Huang
- Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - Zachary Travis
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
- Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
- Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA
| | - Ye Gong
- Department of Critical Care Medicine, HuaShan Hospital, Fudan University, 12 Middle WuLuMuQi, Shanghai, 200040, China.
| | - Jiping Tang
- Department of Physiology and Pharmacology, Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, California, 92350, USA.
- Department of Physiology and Pharmacology, Loma Linda University, Risley Hall, Room 219, 11041 Campus Street, Loma Linda, California, 92354, USA.
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Liegnell R, Apró W, Danielsson S, Ekblom B, van Hall G, Holmberg HC, Moberg M. Elevated plasma lactate levels via exogenous lactate infusion do not alter resistance exercise-induced signaling or protein synthesis in human skeletal muscle. Am J Physiol Endocrinol Metab 2020; 319:E792-E804. [PMID: 32830552 DOI: 10.1152/ajpendo.00291.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lactate has been implicated as a potential signaling molecule. In myotubes, lactate incubation increases mechanistic target of rapamycin complex 1 (mTORC1)- and ERK-signaling and induces hypertrophy, indicating that lactate could be a mediator of muscle adaptations to resistance exercise. However, the potential signaling properties of lactate, at rest or with exercise, have not been explored in human tissue. In a crossover design study, 8 men and 8 women performed one-legged resistance exercise while receiving venous infusion of saline or sodium lactate. Blood was sampled repeatedly, and muscle biopsies were collected at rest and at 0, 90, and 180 min and 24 h after exercise. The primary outcomes examined were intracellular signaling, fractional protein synthesis rate (FSR), and blood/muscle levels of lactate and pH. Postexercise blood lactate concentrations were 130% higher in the Lactate trial (3.0 vs. 7.0 mmol/L, P < 0.001), whereas muscle levels were only marginally higher (27 vs. 32 mmol/kg dry wt, P = 0.003) compared with the Saline trial. Postexercise blood pH was higher in the Lactate trial (7.34 vs. 7.44, P < 0.001), with no differences in intramuscular pH. Exercise increased the phosphorylation of mTORS2448 (∼40%), S6K1T389 (∼3-fold), and p44T202/T204 (∼80%) during recovery, without any differences between trials. FSR over the 24-h recovery period did not differ between the Saline (0.067%/h) and Lactate (0.062%/h) trials. This study does not support the hypothesis that blood lactate levels can modulate anabolic signaling in contracted human muscle. Further in vivo research investigating the impact of exercised versus rested muscle and the role of intramuscular lactate is needed to elucidate its potential signaling properties.
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Affiliation(s)
- Rasmus Liegnell
- Department of Physiology, Nutrition and Biomechaniscs, Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - William Apró
- Department of Physiology, Nutrition and Biomechaniscs, Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Sebastian Danielsson
- Department of Physiology, Nutrition and Biomechaniscs, Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Björn Ekblom
- Department of Physiology, Nutrition and Biomechaniscs, Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Gerrit van Hall
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Clinical Metabolomics Core Facility, Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Hans-Christer Holmberg
- Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden
- Department of Physiology and Pharmacology, Biomedicum C5, Karolinska Institute, Stockholm, Sweden
| | - Marcus Moberg
- Department of Physiology, Nutrition and Biomechaniscs, Swedish School of Sport and Health Sciences, Stockholm, Sweden
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128
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Alasiri G, Jiramongkol Y, Trakansuebkul S, Ke HL, Mahmud Z, Intuyod K, Lam EWF. Reciprocal regulation between GCN2 (eIF2AK4) and PERK (eIF2AK3) through the JNK-FOXO3 axis to modulate cancer drug resistance and clonal survival. Mol Cell Endocrinol 2020; 515:110932. [PMID: 32615282 PMCID: PMC7493713 DOI: 10.1016/j.mce.2020.110932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/06/2023]
Abstract
Pharmaceutical inhibitors of the endoplasmic reticulum (ER)-stress modulator PERK (eIF2AK3) have demonstrated anticancer activities in combination therapies, but their effectiveness as a single agent is limited, suggesting the existence of possible compensatory cellular responses. To explore the potential mechanisms involved, we performed time-course drug treatment experiments on the parental MCF-7 and drug resistant MCF-7EpiR and MCF-7TaxR breast cancer cells and identified GCN2 (eIF2AK4) as a molecule that can potentially cooperate with PERK to regulate FOXO3 via JNK and AKT to modulate drug response. Consistently, GCN2 knockdown severely impaired the clonal survival of parental and resistant MCF-7 cells and sensitised them to epirubicin and paclitaxel treatment. Western blot, RT-qPCR and ChIP analyses also confirmed that GCN2 inactivation causes an induction of JNK and thereby FOXO3 activity, culminating in an increase in PERK activity and expression at the transcription level. Conversely, PERK-inactivation using GSK2606414-induces an induction in GCN2 expression and activity also associated with JNK. In agreement, we also showed that the perk-/- MEFs, expressing elevated levels of P-JNK, JNK, GCN2 and reduced levels of P-AKT and P-FOXO3, have lower clonogenicity and are more sensitive to epirubicin compared to wild-type MEFs. Similarly, gcn2-/- MEFs expressing augmented levels of P-JNK, JNK, P-PERK, PERK and lower levels of P-AKT and P-FOXO3 also had lower clonogenicity and were more sensitive to epirubicin and PERK-inhibition. In addition, JNK1/2 deletion in MEFs resulted in reduced levels of GCN2, FOXO3, PERK, P-PERK expression as well as FOXO3 activity and enhanced clonal survival and resistance to PERK-inhibition. Together these results demonstrate that GCN2 cooperates with PERK through the JNK-FOXO3 axis in a reciprocal negative feedback loop to mediate cancer chemotherapeutic drug response and clonal survival, advocating the potential of targeting GCN2 as a therapeutic strategy for treating cancer and for overcoming drug resistance.
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Affiliation(s)
- Glowi Alasiri
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Yannasittha Jiramongkol
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Sasanan Trakansuebkul
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Hui-Ling Ke
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Zimam Mahmud
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Kitti Intuyod
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK.
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129
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Chauhan NR, Kumar R, Gupta A, Meena RC, Nanda S, Mishra KP, Singh SB. Heat stress induced oxidative damage and perturbation in BDNF/ERK1/2/CREB axis in hippocampus impairs spatial memory. Behav Brain Res 2020; 396:112895. [PMID: 32890597 DOI: 10.1016/j.bbr.2020.112895] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/26/2020] [Accepted: 08/29/2020] [Indexed: 11/19/2022]
Abstract
Heat exposure is an environmental stress that causes diverse heat related pathophysiological changes under extreme conditions. The brain including hippocampal region which is associated with learning and memory is significantly affected by heat stress resulting in memory impairment. However, the effect of heat on the spatial memory remains unclear. The present study aimed to explore the effect of heat stress on hippocampus and spatial memory in rats. Rat model of acute heat stress was used which was divided into two groups, viz. moderate heat stress (MHS) and severe heat stress (SHS). Redox parameters evaluation revealed that MHS and SHS exposure markedly increase the production of malondialdehyde (MDA), oxidised glutathione (GSSG), reactive oxidative species (ROS), protein oxidation level and decrease the reduced glutathione (GSH) levels in the hippocampal tissue. Furthermore, Cresyl Violet (CV) staining of hippocampal region showed higher pyknosis in rats exposed to SHS. Pronounced increase of caspase3 expression and Fluoro Jade-C (FJ-C) positive cells were observed in SHS resulting in neuronal injury and apoptosis in CA3 region of hippocampus culminating in spatial memory deficit. Our data also suggest that heat stress induces phospho Extracellular signal-regulated kinases (pERK)1/2 activation induced by Brain-derived neurotrophic factor (BDNF) leading to further activation of phospho cAMP-response element binding protein (pCREB) under MHS. However, during SHS, BDNF and pCREB expression were completely dysregulated and not sufficient to rescue cognitive decline in rats. In conclusion, SHS induces pathological alterations that include oxidative damage and apoptosis of hippocampal neurons, disturbing BDNF/ERK1/2/CREB axis that may affect spatial memory.
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Affiliation(s)
- Nishant Ranjan Chauhan
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Rahul Kumar
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Avinash Gupta
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Ramesh Chand Meena
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Sarita Nanda
- Department of Biochemistry, Daulat Ram College, University of Delhi North Campus, Delhi 110007, India
| | - Kamla Prasad Mishra
- Scientist E, Defence Research and Development Organisation (DRDO), DRDO Bhawan, Rajaji Marg, Delhi 110011, India
| | - Shashi Bala Singh
- Distinguished Scientist and Director General (Life Sciences), Defence Research and Development Organisation (DRDO), DRDO Bhawan, Rajaji Marg, Delhi 110011, India.
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130
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Dinesh P, Kalaiselvan S, Sujitha S, Rasool M. MicroRNA-532-3p Regulates Pro-Inflammatory Human THP-1 Macrophages by Targeting ASK1/p38 MAPK Pathway. Inflammation 2020; 44:229-242. [PMID: 32876895 DOI: 10.1007/s10753-020-01325-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 08/09/2020] [Accepted: 08/18/2020] [Indexed: 01/14/2023]
Abstract
Inflammation is a complex biological process which alters the normal physiological function of the immune system resulting in an abnormal microenvironment that leads to several clinical complications. The process of inflammation is mediated through various intracellular signaling factors inside the cells. Apoptosis signal-regulating kinase 1 (ASK1) is an inflammation-derived kinase that controls the activation of other family of kinases such as p38 mitogen-activated protein kinases (p38 MAPKs), which mediates various the inflammatory processes. In this study, we cultured THP-1 macrophage cells to undergo inflammatory proliferation with LPS (1 μg/ml) and TNFα (10 ng/ml) stimulation. Initial in silico analysis was utilized to predict novel microRNAs (miRNAs) that target ASK1 signaling and its expression levels in LPS and TNFα stimulated THP-1 cells were estimated. Among the miRNAs, miR-532-3p showcased the highest binding affinity towards ASK1 kinase. We witnessed that transient transfection of miR-532-3p diminished the levels of ASK1 and downstream phosphorylation/translocation of p38 MAPK. Furthermore, direct targeting of ASK1 resulted in regulation of uncontrolled release of cytokines (TNFα, IL-6, and IL-23) and chemokines (GM-CSF and MIP-2α). Overall, we suggest that miR-532-3p attenuates the pro-inflammatory nature of macrophages by targeting ASK1/p38 MAPK signaling pathway and can be used as a molecular intervention for treating inflammatory diseases.
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Affiliation(s)
- Palani Dinesh
- SMV 240, Immunopathology Lab, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632 014, India
| | - Sowmiya Kalaiselvan
- SMV 240, Immunopathology Lab, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632 014, India
| | - Sali Sujitha
- SMV 240, Immunopathology Lab, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632 014, India
| | - Mahaboobkhan Rasool
- SMV 240, Immunopathology Lab, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632 014, India.
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131
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Lu Y, Liu Y, Oeck S, Zhang GJ, Schramm A, Glazer PM. Hypoxia Induces Resistance to EGFR Inhibitors in Lung Cancer Cells via Upregulation of FGFR1 and the MAPK Pathway. Cancer Res 2020; 80:4655-4667. [PMID: 32873635 DOI: 10.1158/0008-5472.can-20-1192] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/22/2020] [Accepted: 08/26/2020] [Indexed: 12/11/2022]
Abstract
Development of resistance remains the key obstacle to the clinical efficacy of EGFR tyrosine kinase inhibitors (TKI). Hypoxia is a key microenvironmental stress in solid tumors associated with acquired resistance to conventional therapy. Consistent with our previous studies, we show here that long-term, moderate hypoxia promotes resistance to the EGFR TKI osimertinib (AZD9291) in the non-small cell lung cancer (NSCLC) cell line H1975, which harbors two EGFR mutations including T790M. Hypoxia-induced resistance was associated with development of epithelial-mesenchymal transition (EMT) coordinated by increased expression of ZEB-1, an EMT activator. Hypoxia induced increased fibroblast growth factor receptor 1 (FGFR1) expression in NSCLC cell lines H1975, HCC827, and YLR086, and knockdown of FGFR1 attenuated hypoxia-induced EGFR TKI resistance in each line. Upregulated expression of FGFR1 by hypoxia was mediated through the MAPK pathway and attenuated induction of the proapoptotic factor BIM. Consistent with this, inhibition of FGFR1 function by the selective small-molecule inhibitor BGJ398 enhanced EGFR TKI sensitivity and promoted upregulation of BIM levels. Furthermore, inhibition of MEK activity by trametinib showed similar effects. In tumor xenografts in mice, treatment with either BGJ398 or trametinib enhanced response to AZD9291 and improved survival. These results suggest that hypoxia is a driving force for acquired resistance to EGFR TKIs through increased expression of FGFR1. The combination of EGFR TKI and FGFR1 or MEK inhibitors may offer an attractive therapeutic strategy for NSCLC. SIGNIFICANCE: Hypoxia-induced resistance to EGFR TKI is driven by overexpression of FGFR1 to sustain ERK signaling, where a subsequent combination of EGFR TKI with FGFR1 inhibitors or MEK inhibitors reverses this resistance. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/21/4655/F1.large.jpg.
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Affiliation(s)
- Yuhong Lu
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
| | - Yanfeng Liu
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
| | - Sebastian Oeck
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
- Department of Medical Oncology, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Gary J Zhang
- Department of Biology, Tufts University, Medford, Massachusetts
| | - Alexander Schramm
- Department of Medical Oncology, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Peter M Glazer
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut.
- Department of Genetics, Yale University School of Medicine. New Haven, Connecticut
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132
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Iwamoto M, Nakamura Y, Takemura M, Hisaoka-Nakashima K, Morioka N. TLR4-TAK1-p38 MAPK pathway and HDAC6 regulate the expression of sigma-1 receptors in rat primary cultured microglia. J Pharmacol Sci 2020; 144:23-29. [PMID: 32653342 DOI: 10.1016/j.jphs.2020.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 06/05/2020] [Accepted: 06/22/2020] [Indexed: 01/02/2023] Open
Abstract
Microglia maintain brain homeostasis as the main immune cells in the central nervous system. Activation of sigma-1 receptor (Sig1R) plays neuroprotective and anti-inflammatory roles in microglia. Recent studies showed that Sig1R expression level has been reduced in the brain of the patients with neurodegenerative diseases including Alzheimer's disease. However, the mechanisms underlying the down regulation of the Sig1R has not been clear. Treatment of rat primary cultured microglia with the inflammogen lipopolysaccharide (LPS) significantly decreased the expression of Sig1R mRNA in a concentration and time-dependent manner. The effects of LPS were blocked by pretreatment with TAK-242, a toll-like receptor 4 (TLR4) antagonist. Furthermore, inhibitors of transforming growth factor beta-activated kinase 1 (TAK1), p38 mitogen-activated protein kinase (MAPK) and histone deacetylase 6 (HDAC6) restored the LPS-induced downregulation of Sig1R. Thus, the current findings demonstrate that TLR4 activation leads to the downregulation of the Sig1R expression via TLR4-TAK1-p38 MAPK pathway and the inhibition of HDAC6 can increase Sig1R expression in microglia. The current findings suggest that downregulation of Sig1R may contribute to neuroinflammation-induced microglial dysfunction, regulation of microglial Sig1R may be novel therapeutic drug candidates for neurodegenerative and neuroinflammatory diseases.
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Affiliation(s)
- Momoka Iwamoto
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Japan
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Japan.
| | - Masatoshi Takemura
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Japan
| | - Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Japan
| | - Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Japan.
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133
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Zhu L, Yi X, Ma C, Luo C, Kong L, Lin X, Gao X, Yuan Z, Wen L, Li R, Wu J, Yi J. Betulinic Acid Attenuates Oxidative Stress in the Thymus Induced by Acute Exposure to T-2 Toxin via Regulation of the MAPK/Nrf2 Signaling Pathway. Toxins (Basel) 2020; 12:toxins12090540. [PMID: 32842569 PMCID: PMC7551141 DOI: 10.3390/toxins12090540] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 12/17/2022] Open
Abstract
T-2 toxin, the most toxic of the trichothecenes, is widely found in grains and feeds, and its intake poses serious risks to the health of humans and animals. An important cytotoxicity mechanism of T-2 toxin is the production of excess free radicals, which in turn leads to oxidative stress. Betulinic acid (BA) has many biological activities, including antioxidant activity, which is a plant-derived pentacyclic triterpenoid. The protective effects and mechanisms of BA in blocking oxidative stress caused by acute exposure to T-2 toxin in the thymus of mice was studied. BA pretreatment reduced ROS production, decreased the MDA content, and increased the content of IgG in serum and the levels of SOD and GSH in the thymus. BA pretreatment also reduced the degree of congestion observed in histopathological tissue sections of the thymus induced by T-2 toxin. Besides, BA downregulated the phosphorylation of the p38, JNK, and ERK proteins, while it upregulated the expression of the Nrf2 and HO-1 proteins in thymus tissues. The results indicated that BA could protect the thymus against the oxidative damage challenged by T-2 toxin by activating Nrf2 and suppressing the MAPK signaling pathway.
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Affiliation(s)
- Lijuan Zhu
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Xianglian Yi
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Chaoyang Ma
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Chenxi Luo
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Li Kong
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Xing Lin
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Xinyu Gao
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
| | - Zhihang Yuan
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
- Hunan Engineering Research Center of Livestock and Poultry Health Care, Changsha 410128, China
| | - Lixin Wen
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
- Hunan Engineering Research Center of Livestock and Poultry Health Care, Changsha 410128, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
| | - Rongfang Li
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
- Hunan Engineering Research Center of Livestock and Poultry Health Care, Changsha 410128, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
| | - Jing Wu
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
- Hunan Engineering Research Center of Livestock and Poultry Health Care, Changsha 410128, China
- Correspondence: (J.W.); (J.Y.)
| | - Jine Yi
- Colleges of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (X.Y.); (C.M.); (C.L.); (L.K.); (X.L.); (X.G.); (Z.Y.); (L.W.); (R.L.)
- Hunan Engineering Research Center of Livestock and Poultry Health Care, Changsha 410128, China
- Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
- Correspondence: (J.W.); (J.Y.)
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Abstract
Cancer is characterized as a complex disease caused by coordinated alterations of multiple signaling pathways. The Ras/RAF/MEK/ERK (MAPK) signaling is one of the best-defined pathways in cancer biology, and its hyperactivation is responsible for over 40% human cancer cases. To drive carcinogenesis, this signaling promotes cellular overgrowth by turning on proliferative genes, and simultaneously enables cells to overcome metabolic stress by inhibiting AMPK signaling, a key singular node of cellular metabolism. Recent studies have shown that AMPK signaling can also reversibly regulate hyperactive MAPK signaling in cancer cells by phosphorylating its key components, RAF/KSR family kinases, which affects not only carcinogenesis but also the outcomes of targeted cancer therapies against the MAPK signaling. In this review, we will summarize the current proceedings of how MAPK-AMPK signalings interplay with each other in cancer biology, as well as its implications in clinic cancer treatment with MAPK inhibition and AMPK modulators, and discuss the exploitation of combinatory therapies targeting both MAPK and AMPK as a novel therapeutic intervention.
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Affiliation(s)
- Jimin Yuan
- Department of Urology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China.
- Geriatric Department, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, 518020, Guangdong, China.
| | - Xiaoduo Dong
- Shenzhen People's Hospital, 1017 Dongmen North Road, Shenzhen, 518020, China
| | - Jiajun Yap
- Cancer and Stem Cell Program, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
| | - Jiancheng Hu
- Cancer and Stem Cell Program, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore.
- Division of Cellular and Molecular Research, National Cancer Centre Singapore, 11 Hospital Drive, Singapore, 169610, Singapore.
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135
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Gordon SM, Nishiguchi MA, Chase JM, Mani S, Mainigi MA, Behrens EM. IFNs Drive Development of Novel IL-15-Responsive Macrophages. J Immunol 2020; 205:1113-1124. [PMID: 32690654 PMCID: PMC7415599 DOI: 10.4049/jimmunol.2000184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/08/2020] [Indexed: 11/19/2022]
Abstract
Disruption in homeostasis of IL-15 is linked to poor maternal and fetal outcomes during pregnancy. The only cells described to respond to IL-15 at the early maternal-fetal interface have been NK cells. We now show a novel population of macrophages, evident in several organs but enriched in the uterus of mice and humans, expressing the β-chain of the IL-15R complex (CD122) and responding to IL-15. CD122+ macrophages (CD122+Macs) are morphologic, phenotypic, and transcriptomic macrophages that can derive from bone marrow monocytes. CD122+Macs develop in the uterus and placenta with kinetics that mirror IFN activity at the maternal-fetal interface. M-CSF permits macrophages to express CD122, and IFNs are sufficient to drive expression of CD122 on macrophages. Neither type I nor type II IFNs are required to generate CD122+Macs, however. In response to IL-15, CD122+Macs activate the ERK signaling cascade and enhance production of proinflammatory cytokines after stimulation with the TLR9 agonist CpG. Finally, we provide evidence of human cells that phenocopy murine CD122+Macs in secretory phase endometrium during the implantation window and in first-trimester uterine decidua. Our data support a model wherein IFNs local to the maternal-fetal interface direct novel IL-15-responsive macrophages with the potential to mediate IL-15 signals critical for optimal outcomes of pregnancy.
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Affiliation(s)
- Scott M Gordon
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA 19104
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Mailyn A Nishiguchi
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Julie M Chase
- Division of Rheumatology, Children's Hospital of Philadelphia, Philadelphia, PA 19104; and
| | - Sneha Mani
- Center for Research on Reproduction and Women's Health, University of Pennsylvania, Philadelphia, PA 19104
| | - Monica A Mainigi
- Center for Research on Reproduction and Women's Health, University of Pennsylvania, Philadelphia, PA 19104
| | - Edward M Behrens
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104;
- Division of Rheumatology, Children's Hospital of Philadelphia, Philadelphia, PA 19104; and
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Dasgupta P, Kulkarni P, Bhat NS, Majid S, Shiina M, Shahryari V, Yamamura S, Tanaka Y, Gupta RK, Dahiya R, Hashimoto Y. Activation of the Erk/MAPK signaling pathway is a driver for cadmium induced prostate cancer. Toxicol Appl Pharmacol 2020; 401:115102. [PMID: 32512071 PMCID: PMC7425797 DOI: 10.1016/j.taap.2020.115102] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Cadmium (Cd) is reported to be associated with carcinogenesis. The molecular mechanisms associated with Cd-induced prostate cancer (PCa) remain elusive. MATERIALS AND METHODS RWPE1, PWR1E and DU 145 cells were used. RT2 Profiler Array, real-time-quantitative-PCR, immunofluorescence, cell cycle, apoptosis, proliferation and colony formation assays along with Gene Set Enrichment Analysis (GSEA) were performed. RESULT Chronic Cd exposure of non-malignant RWPE1 and PWR1E cells promoted cell survival, proliferation and colony formation with inhibition of apoptosis. Even a two-week Cd exposure of PCa cell line (DU 145) significantly increased the proliferation and decreased apoptosis. RT2 profiler array of 84 genes involved in the Erk/MAPK pathway revealed induction of gene expression in Cd-RWPE1 cells compared to RWPE1. This was confirmed by individual TaqMan gene expression analysis in both Cd-RWPE1 and Cd-PWR1E cell lines. GSEA showed an enrichment of the Erk/MAPK pathway along with other pathways such as KEGG-ERBB, KEGG-Cell Cycle, KEGG-VEGF, KEGG-Pathways in cancer and KEGG-prostate cancer pathway. We randomly selected upregulated genes from Erk/MAPK pathway and performed profile analysis in a PCa data set from the TCGA/GDC data base. We observed upregulation of these genes in PCa compared to normal samples. An increase in phosphorylation of the Erk1/2 and Mek1/2 was observed in Cd-RWPE1 and Cd-PWR1E cells compared to parental cells, confirming that Cd-exposure induces activation of the Erk/MAPK pathway. CONCLUSION This study demonstrates that Erk/MAPK signaling is a major pathway involved in Cd-induced malignant transformation of normal prostate cells. Understanding these dominant oncogenic pathways may help develop optimal therapeutic strategies for PCa.
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Affiliation(s)
- Pritha Dasgupta
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Priyanka Kulkarni
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Nadeem S Bhat
- Department of Surgery, Miller School of Medicine, University of Miami, 4150 Clement Street, Miami, FL 94121, USA
| | - Shahana Majid
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Marisa Shiina
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Varahram Shahryari
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Soichiro Yamamura
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Yuichiro Tanaka
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Ravi Kumar Gupta
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA
| | - Rajvir Dahiya
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA.
| | - Yutaka Hashimoto
- Department of Urology, VA Medical Center and University of California San Francisco, School of Medicine, 4150 Clement Street, San Francisco, CA 94121, USA.
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Lynch CJ, Bernad R, Calvo I, Serrano M. Manipulating the Mediator complex to induce naïve pluripotency. Exp Cell Res 2020; 395:112215. [PMID: 32771524 PMCID: PMC7584500 DOI: 10.1016/j.yexcr.2020.112215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/08/2020] [Accepted: 08/01/2020] [Indexed: 12/26/2022]
Abstract
Human naïve pluripotent stem cells (PSCs) represent an optimal homogenous starting point for molecular interventions and differentiation strategies. This is in contrast to the standard primed PSCs which fluctuate in identity and are transcriptionally heterogeneous. However, despite many efforts, the maintenance and expansion of human naïve PSCs remains a challenge. Here, we discuss our recent strategy for the stabilization of human PSC in the naïve state based on the use of a single chemical inhibitor of the related kinases CDK8 and CDK19. These kinases phosphorylate and negatively regulate the multiprotein Mediator complex, which is critical for enhancer-driven recruitment of RNA Pol II. The net effect of CDK8/19 inhibition is a global stimulation of enhancers, which in turn reinforces transcriptional programs including those related to cellular identity. In the case of pluripotent cells, the presence of CDK8/19i efficiently stabilizes the naïve state. Importantly, in contrast to previous chemical methods to induced the naïve state based on the inhibition of the FGF-MEK-ERK pathway, CDK8/19i-naïve human PSCs are chromosomally stable and retain developmental potential after long-term expansion. We suggest this could be related to the fact that CDK8/19 inhibition does not induce DNA demethylation. These principles may apply to other fate decisions.
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Affiliation(s)
- Cian J Lynch
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.
| | - Raquel Bernad
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Isabel Calvo
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, 08010, Spain.
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Wu D, Wu F, Lin R, Meng Y, Wei W, Sun Q, Jia L. Impairment of learning and memory induced by perinatal exposure to BPA is associated with ERα-mediated alterations of synaptic plasticity and PKC/ERK/CREB signaling pathway in offspring rats. Brain Res Bull 2020; 161:43-54. [PMID: 32380187 DOI: 10.1016/j.brainresbull.2020.04.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/17/2020] [Accepted: 04/27/2020] [Indexed: 12/18/2022]
Abstract
The effect of bisphenol A (BPA) on learning and memory has attracted much attention recently, but its underlying mechanism remains unclear. We aimed to investigate whether the impairment of learning and memory induced by perinatal exposure to BPA was associated with the hippocampal estrogen receptor α (ERα)-mediated synaptic plasticity and PKC/ERK/CREB signaling pathway in different sex offspring rats. Pregnant Sprague-Dawley rats were treated with BPA (1 and 10 μg/mL) through drinking water from gestational day (GD) 6 to postnatal day (PND) 21. After weaning, offspring drank BPA-free water until PND 56. Morris water maze, placement and object recognition, and step-down passive avoidance task were performed. The serum estradiol (E2) levels, histopathology of hippocampus, and the expression of learning and memory related proteins were measured. The results showed that spatial and recognition memory were impaired in BPA-exposed female and male offspring, but the impaired passive avoidance memory presented only in males, not in females. The serum E2 levels were increased in BPA-exposed females and males. BPA altered the morphology and quantity of hippocampal neurons. The levels of ERα, NMDA receptor subunit 2B (NR2B), p-NR2B, AMPA receptor 1 (GluA1), p-GluA1, PSD-95, synapsin I, PKC, p-ERK and p-CREB protein expression were decreased in BPA exposed females and males, and there were interactions of sex × BPA exposure in ERα, p-NR2B and p-ERK levels. These findings suggested that perinatal exposure to BPA has sex-specific effects on learning and memory, which is associated with ERα-mediated impairment of synaptic plasticity and down-regulation of PKC/ERK/CREB signaling pathway.
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Affiliation(s)
- Dan Wu
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Fengjuan Wu
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Ren Lin
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Yuan Meng
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Wei Wei
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Qi Sun
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Lihong Jia
- Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang 110122, China.
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Nakano R, Nakayama T, Sugiya H. Biological Properties of JNK3 and Its Function in Neurons, Astrocytes, Pancreatic β-Cells and Cardiovascular Cells. Cells 2020; 9:cells9081802. [PMID: 32751228 PMCID: PMC7464089 DOI: 10.3390/cells9081802] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/15/2020] [Accepted: 07/27/2020] [Indexed: 12/28/2022] Open
Abstract
JNK is a protein kinase, which induces transactivation of c-jun. The three isoforms of JNK, JNK1, JNK2, and JNK3, are encoded by three distinct genes. JNK1 and JNK2 are expressed ubiquitously throughout the body. By contrast, the expression of JNK3 is limited and observed mainly in the brain, heart, and testes. Concerning the biological properties of JNKs, the contribution of upstream regulators and scaffold proteins plays an important role in the activation of JNKs. Since JNK signaling has been described as a form of stress-response signaling, the contribution of JNK3 to pathophysiological events, such as stress response or cell death including apoptosis, has been well studied. However, JNK3 also regulates the physiological functions of neurons and non-neuronal cells, such as development, regeneration, and differentiation/reprogramming. In this review, we shed light on the physiological functions of JNK3. In addition, we summarize recent advances in the knowledge regarding interactions between JNK3 and cellular reprogramming.
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Affiliation(s)
- Rei Nakano
- Laboratory for Cellular Function Conversion Technology, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
- Laboratory of Veterinary Radiology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa 252-0880, Japan; (T.N.); (H.S.)
- Correspondence:
| | - Tomohiro Nakayama
- Laboratory of Veterinary Radiology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa 252-0880, Japan; (T.N.); (H.S.)
| | - Hiroshi Sugiya
- Laboratory of Veterinary Radiology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa 252-0880, Japan; (T.N.); (H.S.)
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Goodwani S, Fernandez C, Acton PJ, Buggia-Prevot V, McReynolds ML, Ma J, Hu CH, Hamby ME, Jiang Y, Le K, Soth MJ, Jones P, Ray WJ. Dual Leucine Zipper Kinase Is Constitutively Active in the Adult Mouse Brain and Has Both Stress-Induced and Homeostatic Functions. Int J Mol Sci 2020; 21:ijms21144849. [PMID: 32659913 PMCID: PMC7402291 DOI: 10.3390/ijms21144849] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 01/15/2023] Open
Abstract
Dual leucine zipper kinase (DLK, Map3k12) is an axonal protein that governs the balance between degeneration and regeneration through its downstream effectors c-jun N-terminal kinase (JNK) and phosphorylated c-jun (p-c-Jun). In peripheral nerves DLK is generally inactive until induced by injury, after which it transmits signals to the nucleus via retrograde transport. Here we report that in contrast to this mode of regulation, in the uninjured adult mouse cerebellum, DLK constitutively drives nuclear p-c-Jun in cerebellar granule neurons, whereas in the forebrain, DLK is similarly expressed and active, but nuclear p-c-Jun is undetectable. When neurodegeneration results from mutant human tau in the rTg4510 mouse model, p-c-Jun then accumulates in neuronal nuclei in a DLK-dependent manner, and the extent of p-c-Jun correlates with markers of synaptic loss and gliosis. This regional difference in DLK-dependent nuclear p-c-Jun accumulation could relate to differing levels of JNK scaffolding proteins, as the cerebellum preferentially expresses JNK-interacting protein-1 (JIP-1), whereas the forebrain contains more JIP-3 and plenty of SH3 (POSH). To characterize the functional differences between constitutive- versus injury-induced DLK signaling, RNA sequencing was performed after DLK inhibition in the cerebellum and in the non-transgenic and rTg4510 forebrain. In all contexts, DLK inhibition reduced a core set of transcripts that are associated with the JNK pathway. Non-transgenic forebrain showed almost no other transcriptional changes in response to DLK inhibition, whereas the rTg4510 forebrain and the cerebellum exhibited distinct differentially expressed gene signatures. In the cerebellum, but not the rTg4510 forebrain, pathway analysis indicated that DLK regulates insulin growth factor-1 (IGF1) signaling through the transcriptional induction of IGF1 binding protein-5 (IGFBP5), which was confirmed and found to be functionally relevant by measuring signaling through the IGF1 receptor. Together these data illuminate the complex multi-functional nature of DLK signaling in the central nervous system (CNS) and demonstrate its role in homeostasis as well as tau-mediated neurodegeneration.
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Affiliation(s)
- Sunil Goodwani
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Celia Fernandez
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Paul J. Acton
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Virginie Buggia-Prevot
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Morgan L. McReynolds
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Jiacheng Ma
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Cheng Hui Hu
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Mary E. Hamby
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
| | - Yongying Jiang
- Institute for Applied Cancer Science, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (Y.J.); (K.L.); (M.J.S.); (P.J.)
| | - Kang Le
- Institute for Applied Cancer Science, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (Y.J.); (K.L.); (M.J.S.); (P.J.)
| | - Michael J. Soth
- Institute for Applied Cancer Science, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (Y.J.); (K.L.); (M.J.S.); (P.J.)
| | - Philip Jones
- Institute for Applied Cancer Science, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (Y.J.); (K.L.); (M.J.S.); (P.J.)
| | - William J. Ray
- The Neurodegeneration Consortium, Therapeutics Discovery Division, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA; (S.G.); (C.F.); (P.J.A.); (V.B.-P.); (M.L.M.); (J.M.); (C.H.H.); (M.E.H.)
- Correspondence: ; Tel.: +1-713-794-4558
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Yan J, Zuo G, Sherchan P, Huang L, Ocak U, Xu W, Travis ZD, Wang W, Zhang JH, Tang J. CCR1 Activation Promotes Neuroinflammation Through CCR1/TPR1/ERK1/2 Signaling Pathway After Intracerebral Hemorrhage in Mice. Neurotherapeutics 2020; 17:1170-1183. [PMID: 31898284 PMCID: PMC7609528 DOI: 10.1007/s13311-019-00821-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The activation of C-C chemokine receptor type 1 (CCR1) has been shown to be pro-inflammatory in several animal models of neurological diseases. The objective of this study was to investigate the activation of CCR1 on neuroinflammation in a mouse model of intracerebral hemorrhage (ICH) and the mechanism of CCR1/tetratricopeptide repeat 1 (TPR1)/extracellular signal-regulated kinase 1/2 (ERK1/2) signaling pathway in CCR1-mediated neuroinflammation. Adult male CD1 mice (n = 210) were used in the study. The selective CCR1 antagonist Met-RANTES was administered intranasally at 1 h after autologous blood injection. To elucidate potential mechanism, a specific ERK1/2 activator (ceramide C6) was administered prior to Met-RANTES treatment; CCR1 activator (recombinant CCL5, rCCL5) and TPR1 CRISPR were administered in naïve mouse. Neurobehavioral assessments, brain water content, immunofluorescence staining, and western blot were performed. The endogenous expressions of CCR1, CCL5, TPR1, and p-ERK1/2 were increased in the brain after ICH. CCR1 were expressed on microglia, neurons, and astrocytes. The inhibition of CCR1 with Met-RANTES improved neurologic function, decreased brain edema, and suppressed microglia/macrophage activations and neutrophil infiltration after ICH. Met-RANTES treatment decreased expressions of CCR1, TPR1, p-ERK, TNF-α, and IL-1β, which was reversed by ceramide C6. The brain CCR1 activation by rCCL5 injection in naïve mouse resulted in neurological deficits and increased expressions of CCR1, TPR1, p-ERK, TNF-α, and IL-1β. These detrimental effects of rCCL5 were reversed by TPR1 knockdown using TPR1 CRISPR. Our study demonstrated that CCR1 activation promoted neuroinflammation through CCR1/TPR1/ERK1/2 signaling pathway after ICH in mice. CCR1 inhibition with Met-RANTES attenuated neuroinflammation, thereby reducing brain edema and improving neurobehavioral functions. Targeting CCR1 activation may provide a promising therapeutic approach in the management of ICH patients.
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Affiliation(s)
- Jun Yan
- Department of Neurosurgery, Guangxi Medical University Cancer Hospital, Nanning, 530021, Guangxi, China
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
| | - Gang Zuo
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
- Department of Neurosurgery, The Affiliated Taicang Hospital, Soochow University, Taicang, Suzhou, 215400, Jiangsu, China
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
- Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
| | - Umut Ocak
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
| | - Weilin Xu
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
| | - Zachary D Travis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
- Department of Earth and Biological Sciences, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Wenna Wang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA
- Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
- Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, 11041 Campus Street, Loma Linda, CA, 92354, USA.
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Jurewicz E, Miazga K, Fabczak H, Sławińska U, Filipek A. CacyBP/SIP in the rat spinal cord in norm and after transection - Influence on the phosphorylation state of ERK1/2 and p38 kinases. Neurochem Int 2020; 138:104757. [PMID: 32544715 DOI: 10.1016/j.neuint.2020.104757] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 01/10/2023]
Abstract
INTRODUCTION CacyBP/SIP is a multifunctional protein present in various mammalian tissues, among them in brain. Recently, it has been shown that CacyBP/SIP exhibits phosphatase activity towards ERK1/2 and p38 kinases. OBJECTIVES The aim of our study was to analyze the localization and level of CacyBP/SIP and its substrates, phosphorylated ERK1/2 (p-ERK1/2) and phosphorylated p38 (p-p38) kinases, in an intact and transected rat spinal cord. METHODS To achieve our goals we have performed Western blot/densitometric analysis and double immunofluorescence staining using rat spinal cord tissue, intact and after total transection at different time points. RESULTS We have observed a decrease in the level of CacyBP/SIP and an increase in the level of p-ERK1/2 and of p-p38 in fragments of the spinal cord excised 1 and 3 months after transection. Moreover, immunofluorescence staining has shown that CacyBP/SIP, p-ERK1/2 or p-p38 co-localized with a neuronal marker, NeuN, and with an oligodendrocyte marker, Olig2. CONCLUSION The inverse correlation between CacyBP/SIP and p-ERK1/2 or p-p38 levels suggests that CacyBP/SIP may dephosphorylate p-ERK1/2 and p-p38 kinases and be involved in neural plasticity following spinal cord injury.
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Affiliation(s)
- Ewelina Jurewicz
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Str., 02-093, Warsaw, Poland
| | - Krzysztof Miazga
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Str., 02-093, Warsaw, Poland
| | - Hanna Fabczak
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Str., 02-093, Warsaw, Poland
| | - Urszula Sławińska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Str., 02-093, Warsaw, Poland
| | - Anna Filipek
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Str., 02-093, Warsaw, Poland.
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Heo YJ, Choi SE, Lee N, Jeon JY, Han SJ, Kim DJ, Kang Y, Lee KW, Kim HJ. CCL20 induced by visfatin in macrophages via the NF-κB and MKK3/6-p38 signaling pathways contributes to hepatic stellate cell activation. Mol Biol Rep 2020; 47:4285-4293. [PMID: 32418112 PMCID: PMC7295719 DOI: 10.1007/s11033-020-05510-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/08/2020] [Indexed: 12/16/2022]
Abstract
Chemokines interact with hepatic resident cells during inflammation and fibrosis. CC chemokine ligand (CCL) 20 has been reported to be important in inflammation and fibrosis in the liver. We hypothesized that visfatin, an adipocytokine, could play a role in hepatic fibrosis via CCL20. We investigated the effect of visfatin on CCL20 in THP-1 human promonocytic cells and examined the molecular mechanisms involved. Following treatment of THP-1 cells with visfatin, CCL20 expression and secretion were assessed. We assessed the intracellular signaling molecules IKK/NF-κB, JAK2/STAT3, MAPKs, and MKK3/6 by western blotting. We treated THP-1 cells with visfatin and signaling inhibitors, and examined CCL20 mRNA and protein levels. To investigate the effect of visfatin-induced CCL20 expression in hepatic stellate cells (HSCs), LX-2 cells were co-cultured with the culture supernatant of THP-1 cells with or without anti-CCL20 neutralizing antibodies, and fibrosis markers were examined by RT-PCR and immunoblotting. In THP-1 cells, visfatin increased the CCL20 mRNA and protein levels. visfatin increased the activities of the NF-κB, p38, and MLK3/6 signaling pathways but not those of the JAK2/STAT3 and ERK pathways. Visfatin treatment together with an NF-κB, p38, or MLK3 inhibitor reduced the mRNA and protein levels of CCL20. The visfatin-induced CCL20 increased the expression of fibrosis markers and CCR6 in HSCs. Following neutralization of CCL20, the levels of fibrosis markers and CCR6 were decreased. Visfatin increases the expression of CCL20 via the NF-κB and MKK3/6-p38 signaling pathways in macrophages, and visfatin-induced CCL20 expression promotes the fibrosis markers in HSCs.
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Affiliation(s)
- Yu Jung Heo
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, Republic of Korea
| | - Sung-E Choi
- Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Nami Lee
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Ja Young Jeon
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Seung Jin Han
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Dae Jung Kim
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Yup Kang
- Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Kwan Woo Lee
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Hae Jin Kim
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, 206, World cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea.
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144
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Ciftci E, Karacay R, Caglayan A, Altunay S, Ates N, Altintas MO, Doeppner TR, Yulug B, Kilic E. Neuroprotective effect of lithium in cold- induced traumatic brain injury in mice. Behav Brain Res 2020; 392:112719. [PMID: 32479849 DOI: 10.1016/j.bbr.2020.112719] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/20/2020] [Accepted: 05/18/2020] [Indexed: 11/17/2022]
Abstract
Apart from its well-established therapeutic activity on bipolar disorder and depression, lithium exerts neuroprotective activity upon neurodegenerative disorders, such as traumatic brain injury (TBI). However, the cellular signaling mechanisms mediating lithium's neuroprotective activity and long-term dose- and time-dependent effects on close and remote proximity are largely unknown. Herein, we tested prophylactic and acute effects of lithium (2 mmol/kg) after cold- induced TBI. In both conditions, treatments with lithium resulted in reduced infarct volume and apoptosis. Its acute treatment resulted in the increase of Akt, ERK-1/2 and GSK-3 α/β phosphoylations. Interestingly, its prophylactic treatment instead resulted in decreased phosphorylations of Akt, ERK-1/2, p38, JNK-1 moderately and GSK-3 α/β significantly. Then, we tested subacute (35-day follow-up) role of low (0.2 mmol/kg) and high dose (2 mmol/kg) lithium and revealed that high dose lithium group was the most mobile so the least depressed in the tail suspension test. Anxiety level was assessed by light-dark test, all groups' anxiety levels were decreased with time, but lithium had no effect on anxiety like behavior. When subacute effects of injury and drug treatment were evaluated on the defined brain regions, infarct volume was decreased in the high dose lithium group significantly. In contrast to other brain regions, hippocampal atrophies were observed in both lithium treatment groups, which were significant in the low dose lithium group in both hemispheres, which was associated with the reduced cell proliferation and neurogenesis. Our data demonstrate that lithium treatment protects neurons from TBI. However, long term particularly low-dose lithium causes hippocampal atrophy and decreased neurogenesis.
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Affiliation(s)
- Elvan Ciftci
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey
| | - Reyda Karacay
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey
| | - Aysun Caglayan
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey
| | - Serdar Altunay
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey
| | - Nilay Ates
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Pharmacology, Istanbul, Turkey
| | - Mehmet O Altintas
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey
| | - Thorsten R Doeppner
- University of Göttingen Medical School, Dept. of Neurology, Göttingen, Germany
| | - Burak Yulug
- Alanya Alaaddin Keykubat University, Faculty of Medicine, Dept. of Neurology, Antalya, Turkey
| | - Ertugrul Kilic
- Istanbul Medipol University, Regenerative and Restorative Medical Research Center, Istanbul, Turkey; Istanbul Medipol University, Faculty of Medicine, Dept. of Physiology, Istanbul, Turkey.
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145
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Sun T, Luo L, Tian QQ, Wang WJ, Liu QQ, Yang L, Zhang K, Zhang W, Zhao MG, Yang Q. Anxiolytic Effects of 8-O-Acetyl Shanzhiside Methylester on Acute and Chronic Anxiety via Inflammatory Response Inhibition and Excitatory/Inhibitory Transmission Imbalance. Neurotox Res 2020; 38:979-991. [PMID: 32367473 PMCID: PMC7591445 DOI: 10.1007/s12640-020-00203-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/24/2020] [Accepted: 04/07/2020] [Indexed: 02/06/2023]
Abstract
Anxiety leads to a global decline in quality of life and increase in social burden. However, treatments are limited, because the molecular mechanisms underlying complex emotional disorders are poorly understood. We explored the anxiolytic effects of 8-O-acetyl shanzhiside methylester (8-OaS), an active component in Lamiophlomis rotata (L. rotata; Benth.) or Kudo, a traditional herb that has been shown to be effective in the clinical treatment of chronic pain syndromes in China. Two mouse anxiety models were used: forced swimming stress (FSS)–induced anxiety and complete Freund’s adjuvant (CFA)–induced chronic inflammatory pain. All animal behaviors were analyzed on the elevated plus maze and in the open-field test. 8-OaS significantly ameliorated anxiety-like behaviors in both anxiety models and inhibited the translation enhancement of GluN2A, GluN2B, and PSD95. Moreover, a reduction in GABA receptors disrupted the excitatory/inhibitory (E/I) balance in the basolateral amygdala (BLA), indicated by increased excitatory and decreased inhibitory presynaptic release. 8-OaS also blocked microglia activation and reduced the phosphorylation of p38, c-Jun N-terminal kinase (JNK), NF-κB p65, and tumor necrosis factor alpha (TNF-α) in the BLA of anxiety mice. 8-OaS exhibits obvious anxiolytic effects by regulating the excitatory/inhibitory (E/I) synaptic transmission and attenuating inflammatory responses in the BLA.
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Affiliation(s)
- Ting Sun
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China
| | - Li Luo
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China
| | - Qin-Qin Tian
- Department of Chemistry, School of Pharmacy, the Fourth Military Medical University, Xi'an, 710032, China
| | - Wen-Ju Wang
- Student Brigade, the Fourth Military Medical University, Xi'an, 710032, China
| | - Qing-Qing Liu
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China
| | - Le Yang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China
| | - Kun Zhang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China
| | - Wei Zhang
- Department of Pharmacy, Xijing Hospital, the Fourth Military Medical University, Xi'an, 710032, China
| | - Ming-Gao Zhao
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China.
| | - Qi Yang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, the Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, People's Republic of China.
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146
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Ni Y, Zhang H, Li Z, Li Z. Connective tissue growth factor (CCN2) inhibits TNF-α-induced apoptosis by enhancing autophagy through the Akt and Erk pathways in osteoblasts. Pharmazie 2020; 75:213-217. [PMID: 32393432 DOI: 10.1691/ph.2020.0336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Connective tissue growth factor (CTGF/CCN2) is a secreted protein modulating various biological processes, such as proliferation, differentiation, and survival. Tumor necrosis factor-α (TNF-α), known as a proinflammatory factor, negatively regulates osteoblast differentiation and survival. However, the potential mechanisms of CCN2 in TNF-α-induced osteoblast apoptosis are not fully understood. In the present study, we found that CCN2 was expressed in osteoblasts and downregulated after treatment with TNF-α. Overexpression of CCN2 attenuated TNF-α-induced osteoblast apoptosis. Autophagy, a pro-survival biological behavior, was triggered by TNF-α stimulation, and CCN2 overexpression enhanced this process. Inhibition of autophagy by chloroquine (CQ) affected the anti-apoptotic effect of CCN2. Moreover, the phosphorylation levels of Akt and Erk were upregulated in CCN2-over expressed cells, and LY294002 and U1026 (which inhibited the Akt and Erk signaling pathways, respectively) reversed the effect of CCN2 on autophagy and cell survival enhancement. Our data suggest that CCN2 might be a positive regulator of osteoblast survival in TNF-α stimulation by enhancing autophagy through the Akt and Erk signaling pathways.
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Affiliation(s)
- Yifeng Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China
| | - Hao Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China
| | - Zhi Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China;,
| | - Zubing Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China;,
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147
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Chen M, Cecon E, Karamitri A, Gao W, Gerbier R, Ahmad R, Jockers R. Melatonin MT 1 and MT 2 receptor ERK signaling is differentially dependent on G i/o and G q/11 proteins. J Pineal Res 2020; 68:e12641. [PMID: 32080899 DOI: 10.1111/jpi.12641] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 12/14/2022]
Abstract
G protein-coupled receptors (GPCRs) transmit extracellular signals into cells by activating G protein- and β-arrestin-dependent pathways. Extracellular signal-regulated kinases (ERKs) play a central role in integrating these different linear inputs coming from a variety of GPCRs to regulate cellular functions. Here, we investigated human melatonin MT1 and MT2 receptors signaling through the ERK1/2 cascade by employing different biochemical techniques together with pharmacological inhibitors and siRNA molecules. We show that ERK1/2 activation by both receptors is exclusively G protein-dependent, without any participation of β-arrestin1/2 in HEK293 cells. ERK1/2 activation by MT1 is only mediated though Gi/o proteins, while MT2 is dependent on the cooperative activation of Gi/o and Gq/11 proteins. In the absence of Gq/11 proteins, however, MT2 -induced ERK1/2 activation switches to a β-arrestin1/2-dependent mode. The signaling cascade downstream of G proteins is the same for both receptors and involves activation of the PI3K/PKCζ/c-Raf/MEK/ERK cascade. The differential G protein dependency of MT1 - and MT2 -mediated ERK activation was confirmed at the level of EGR1 and FOS gene expression, two ERK1/2 target genes. Gi/o /Gq/11 cooperativity was also observed in Neuroscreen-1 cells expressing endogenous MT2 , whereas in the mouse retina, where MT2 is engaged into MT1 /MT2 heterodimers, ERK1/2 signaling is exclusively Gi/o -dependent. Collectively, our data reveal differential signaling modes of MT1 and MT2 in terms of ERK1/2 activation, with an unexpected Gi/o /Gq/11 cooperativity exclusively for MT2 . The plasticity of ERK activation by MT2 is highlighted by the switch to a β-arrestin1/2-dependent mode in the absence of Gq/11 proteins and by the switch to a Gi/o mode when engaged into MT1 /MT2 heterodimers, revealing a new mechanism underlying tissue-specific responses to melatonin.
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Affiliation(s)
- Min Chen
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
| | - Erika Cecon
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
| | | | - Wenwen Gao
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
| | - Romain Gerbier
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
| | - Raise Ahmad
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
| | - Ralf Jockers
- Institut Cochin, CNRS, INSERM, Université de Paris, Paris, France
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148
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Kim D, Kwon S. Vibrational stress affects extracellular signal-regulated kinases activation and cytoskeleton structure in human keratinocytes. PLoS One 2020; 15:e0231174. [PMID: 32267880 PMCID: PMC7141684 DOI: 10.1371/journal.pone.0231174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 03/17/2020] [Indexed: 01/22/2023] Open
Abstract
As the outermost organ, the skin can be damaged following injuries such as wounds and bacterial or viral infections, and such damage should be rapidly restored to defend the body against physical, chemical, and microbial assaults. However, the wound healing process can be delayed or prolonged by health conditions, including diabetes mellitus, venous stasis disease, ischemia, and even stress. In this study, we developed a vibrational cell culture model and investigated the effects of mechanical vibrations on human keratinocytes. The HaCaT cells were exposed to vibrations at a frequency of 45 Hz with accelerations of 0.8g for 2 h per day. The applied mechanical vibration did not affect cell viability or cell proliferation. Cell migratory activity did increase following exposure to vibration, but the change was not statistically significant. The results of immunostaining (F-actin), western blot (ERK1/2), and RT-qPCR (FGF-2, PDGF-B, HB-EGF, TGF-β1, EGFR, and KGFR) analyses demonstrated that the applied vibration resulted in rearrangement of the cytoskeleton, leading to activation of ERK1/2, one of the MAPK signaling pathways, and upregulation of the gene expression levels of HB-EGF and EGFR. The results suggest that mechanical vibration may have wound healing potential and could be used as a mechanical energy-based treatment for enhancing wound healing efficiency.
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Affiliation(s)
- Dongjoo Kim
- Department of Biological Engineering, Inha University, Incheon, Korea
- Biology and Medical Device Evaluation Team, Korea Testing & Research Institute, Gwacheon, Korea
| | - Soonjo Kwon
- Department of Biological Engineering, Inha University, Incheon, Korea
- * E-mail:
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149
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Suh MG, Bae GY, Jo K, Kim JM, Hong KB, Suh HJ. Photoprotective Effect of Dietary Galacto-Oligosaccharide (GOS) in Hairless Mice via Regulation of the MAPK Signaling Pathway. Molecules 2020; 25:E1679. [PMID: 32268567 PMCID: PMC7180589 DOI: 10.3390/molecules25071679] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/24/2022] Open
Abstract
This study investigated the suppression of photoaging by galacto-oligosaccharide (GOS) ingestion following exposure to ultraviolet (UV) radiation. To investigate its photoprotective effects, GOS along with collagen tripeptide (CTP) as a positive control was orally administered to hairless mice under UVB exposure for 8 weeks. The water holding capacity, transepidermal water loss (TEWL), and wrinkle parameters were measured. Additionally, quantitative reverse-transcription polymerase chain reaction and Western blotting were used to determine mRNA expression and protein levels, respectively. The GOS or CTP orally-administered group showed a decreased water holding capacity and increased TEWL compared to those of the control group, which was exposed to UVB (CON) only. In addition, the wrinkle area and mean wrinkle length in the GOS and CTP groups significantly decreased. Skin aging-related genes, matrix metalloproteinase, had significantly different expression levels in the CTP and GOS groups. Additionally, the tissue inhibitor of metalloproteinases and collagen type I gene expression in the CTP and GOS groups significantly increased. Oral administration of GOS and CTP significantly lowered the tissue cytokine (interleukin-6 and -12, and tumor necrosis factor-α) levels. There was a significant difference in UVB-induced phosphorylation of JNK, p38, and ERK between the GOS group and the CON group. Our findings indicate that GOS intake can suppress skin damage caused by UV light and has a UV photoprotective effect.
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Affiliation(s)
- Min Geun Suh
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Korea; (M.G.S.); (G.Y.B.)
| | - Gi Yeon Bae
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Korea; (M.G.S.); (G.Y.B.)
| | - Kyungae Jo
- BK21Plus, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Jin Man Kim
- Department of Food Marketing and Safety, Konkuk University, Seoul 05029, Korea;
| | - Ki-Bae Hong
- BK21Plus, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Hyung Joo Suh
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Korea; (M.G.S.); (G.Y.B.)
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150
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Pennuto M, Pandey UB, Polanco MJ. Insulin-like growth factor 1 signaling in motor neuron and polyglutamine diseases: From molecular pathogenesis to therapeutic perspectives. Front Neuroendocrinol 2020; 57:100821. [PMID: 32006533 DOI: 10.1016/j.yfrne.2020.100821] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 11/19/2022]
Abstract
The pleiotropic peptide insulin-like growth factor 1 (IGF-I) regulates human body homeostasis and cell growth. IGF-I activates two major signaling pathways, namely phosphoinositide-3-kinase (PI3K)/protein kinase B (PKB/Akt) and Ras/extracellular signal-regulated kinase (ERK), which contribute to brain development, metabolism and function as well as to neuronal maintenance and survival. In this review, we discuss the general and tissue-specific effects of the IGF-I pathways. In addition, we present a comprehensive overview examining the role of IGF-I in neurodegenerative diseases, such as spinal and muscular atrophy, amyotrophic lateral sclerosis, and polyglutamine diseases. In each disease, we analyze the disturbances of the IGF-I pathway, the modification of the disease protein by IGF-I signaling, and the therapeutic strategies based on the use of IGF-I developed to date. Lastly, we highlight present and future considerations in the use of IGF-I for the treatment of these disorders.
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Affiliation(s)
- Maria Pennuto
- Department of Biomedical Sciences (DBS), University of Padova, 35131 Padova, Italy; Veneto Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy; Padova Neuroscience Center (PNC), 35131 Padova, Italy; Myology Center (CIR-Myo), 35131 Padova, Italy.
| | - Udai Bhan Pandey
- Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA 15261, USA; Division of Child Neurology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA; Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - María José Polanco
- Department of Pharmaceutic and Health Science, University San Pablo CEU, Campus Montepríncipe, 28925 Alcorcón, Madrid, Spain.
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