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Kersey AL, Cheng DY, Deo KA, Dubell CR, Wang TC, Jaiswal MK, Kim MH, Murali A, Hargett SE, Mallick S, Lele TP, Singh I, Gaharwar AK. Stiffness assisted cell-matrix remodeling trigger 3D mechanotransduction regulatory programs. Biomaterials 2024; 306:122473. [PMID: 38335719 DOI: 10.1016/j.biomaterials.2024.122473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/13/2023] [Accepted: 01/16/2024] [Indexed: 02/12/2024]
Abstract
Engineered matrices provide a valuable platform to understand the impact of biophysical factors on cellular behavior such as migration, proliferation, differentiation, and tissue remodeling, through mechanotransduction. While recent studies have identified some mechanisms of 3D mechanotransduction, there is still a critical knowledge gap in comprehending the interplay between 3D confinement, ECM properties, and cellular behavior. Specifically, the role of matrix stiffness in directing cellular fate in 3D microenvironment, independent of viscoelasticity, microstructure, and ligand density remains poorly understood. To address this gap, we designed a nanoparticle crosslinker to reinforce collagen-based hydrogels without altering their chemical composition, microstructure, viscoelasticity, and density of cell-adhesion ligand and utilized it to understand cellular dynamics. This crosslinking mechanism utilizes nanoparticles as crosslink epicenter, resulting in 10-fold increase in mechanical stiffness, without other changes. Human mesenchymal stem cells (hMSCs) encapsulated in 3D responded to mechanical stiffness by displaying circular morphology on soft hydrogels (5 kPa) and elongated morphology on stiff hydrogels (30 kPa). Stiff hydrogels facilitated the production and remodeling of nascent extracellular matrix (ECM) and activated mechanotransduction cascade. These changes were driven through intracellular PI3AKT signaling, regulation of epigenetic modifiers and activation of YAP/TAZ signaling. Overall, our study introduces a unique biomaterials platform to understand cell-ECM mechanotransduction in 3D for regenerative medicine as well as disease modelling.
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Affiliation(s)
- Anna L Kersey
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Daniel Y Cheng
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Kaivalya A Deo
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Christina R Dubell
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Ting-Ching Wang
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Manish K Jaiswal
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Min Hee Kim
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Aparna Murali
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Sarah E Hargett
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Sumana Mallick
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA; Department of Cell Biology and Genetics, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Tanmay P Lele
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Irtisha Singh
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA; Department of Cell Biology and Genetics, School of Medicine, Texas A&M University, Bryan, TX 77807, USA; Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX 77843, USA.
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA; Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX 77843, USA; Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX 77843, USA; Department of Material Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA.
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2
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Chen T, Chen J, Chen Q, Liang Z, Pan L, Zhao J, She X. Promotion of non-small cell lung cancer tumor growth by FHL2 via inducing angiogenesis and vascular permeability. J Thorac Dis 2024; 16:1424-1437. [PMID: 38505066 PMCID: PMC10944754 DOI: 10.21037/jtd-23-1975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/04/2024] [Indexed: 03/21/2024]
Abstract
Background Antiangiogenetic therapy is one of the effective strategies for non-small cell lung cancer (NSCLC) treatment. Four-and-a-half LIM-domain protein 2 (FHL2) serves as a key function in cell growth and metastasis of multiple cancers, but the role of FHL2 in NSCLC angiogenesis has not been intensely examined. Methods FHL2 expression in NSCLC tissues and cell lines and its correlation with patients prognosis were investigated by using The Cancer Genome Atlas (TCGA) database and quantitative polymerase chain reaction (qPCR). Cell Counting Kit-8 (CCK-8) assay, EdU (5-ethynyl-2'-deoxyuridine) assay, and a xenograft model were used to investigate the effects of FHL2 on NSCLC progression in vitro and in vivo. CCK-8, wound-healing, Transwell invasion, tube formation, and permeability assays were performed to determine the roles of FHL2 in angiogenesis and vascular permeability. Vascular endothelial growth factor A (VEGFA) enzyme-linked immunosorbent assay (ELISA) assay, Western blot analysis, and MK-2206 were used to investigate the specific mechanism mediated by FHL2. Results We demonstrated that FHL2 was significantly upregulated in NSCLC tissues and cell lines and was associated with poor prognosis. FHL2 overexpression enhanced the cell viability of NSCLC cells, as well as the proliferation, migration, invasion, and tube formation of human umbilical vein endothelial cells (HUVECs). In addition, we determined that FHL2 activated the AKT-mTOR signaling pathway in HUVECs by promoting VEGFA secretion from NSCLC cells, thereby inducing angiogenesis and vascular leakiness. We further confirmed that FHL2 also promoted NSCLC tumor growth in vivo. Conclusions Our study revealed the role of FHL2 in NSCLC and the mechanism by which FHL2 promotes NSCLC tumorigenesis, providing novel insights into targeted therapy for NSCLC.
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Affiliation(s)
- Tengfei Chen
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Jun Chen
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - Qiuyun Chen
- Department of Clinical Nursing, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
| | - Zhipan Liang
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Liuying Pan
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Jun Zhao
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Suzhou, China
| | - Xiaowei She
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
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Shakhpazyan N, Mikhaleva L, Bedzhanyan A, Gioeva Z, Sadykhov N, Mikhalev A, Atiakshin D, Buchwalow I, Tiemann M, Orekhov A. Cellular and Molecular Mechanisms of the Tumor Stroma in Colorectal Cancer: Insights into Disease Progression and Therapeutic Targets. Biomedicines 2023; 11:2361. [PMID: 37760801 PMCID: PMC10525158 DOI: 10.3390/biomedicines11092361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/31/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
Colorectal cancer (CRC) is a major health burden worldwide and is the third most common type of cancer. The early detection and diagnosis of CRC is critical to improve patient outcomes. This review explores the intricate interplay between the tumor microenvironment, stromal interactions, and the progression and metastasis of colorectal cancer. The review begins by assessing the gut microbiome's influence on CRC development, emphasizing its association with gut-associated lymphoid tissue (GALT). The role of the Wnt signaling pathway in CRC tumor stroma is scrutinized, elucidating its impact on disease progression. Tumor budding, its effect on tumor stroma, and the implications for patient prognosis are investigated. The review also identifies conserved oncogenic signatures (COS) within CRC stroma and explores their potential as therapeutic targets. Lastly, the seed and soil hypothesis is employed to contextualize metastasis, accentuating the significance of both tumor cells and the surrounding stroma in metastatic propensity. This review highlights the intricate interdependence between CRC cells and their microenvironment, providing valuable insights into prospective therapeutic approaches targeting tumor-stroma interactions.
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Affiliation(s)
- Nikolay Shakhpazyan
- Avtsyn Research Institute of Human Morphology, Petrovsky National Research Center of Surgery, 119435 Moscow, Russia; (N.S.); (L.M.); (Z.G.); (N.S.); (A.O.)
| | - Liudmila Mikhaleva
- Avtsyn Research Institute of Human Morphology, Petrovsky National Research Center of Surgery, 119435 Moscow, Russia; (N.S.); (L.M.); (Z.G.); (N.S.); (A.O.)
| | - Arkady Bedzhanyan
- Department of Abdominal Surgery and Oncology II (Coloproctology and Uro-Gynecology), Petrovsky National Research Center of Surgery, 119435 Moscow, Russia;
| | - Zarina Gioeva
- Avtsyn Research Institute of Human Morphology, Petrovsky National Research Center of Surgery, 119435 Moscow, Russia; (N.S.); (L.M.); (Z.G.); (N.S.); (A.O.)
| | - Nikolay Sadykhov
- Avtsyn Research Institute of Human Morphology, Petrovsky National Research Center of Surgery, 119435 Moscow, Russia; (N.S.); (L.M.); (Z.G.); (N.S.); (A.O.)
| | - Alexander Mikhalev
- Department of Hospital Surgery No. 2, Pirogov Russian National Research Medical University, 117997 Moscow, Russia;
| | - Dmitri Atiakshin
- Research and Educational Resource Center for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia;
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, 394036 Voronezh, Russia
| | - Igor Buchwalow
- Research and Educational Resource Center for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, Peoples’ Friendship University of Russia, 117198 Moscow, Russia;
- Institute for Hematopathology, 22547 Hamburg, Germany;
| | | | - Alexander Orekhov
- Avtsyn Research Institute of Human Morphology, Petrovsky National Research Center of Surgery, 119435 Moscow, Russia; (N.S.); (L.M.); (Z.G.); (N.S.); (A.O.)
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia
- Institute for Atherosclerosis Research, 121096 Moscow, Russia
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Sun RX, Zhu HJ, Zhang YR, Wang JN, Wang Y, Cao QC, Ji JD, Jiang C, Yuan ST, Chen X, Liu QH. ALKBH5 causes retinal pigment epithelium anomalies and choroidal neovascularization in age-related macular degeneration via the AKT/mTOR pathway. Cell Rep 2023; 42:112779. [PMID: 37436898 DOI: 10.1016/j.celrep.2023.112779] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 05/24/2023] [Accepted: 06/25/2023] [Indexed: 07/14/2023] Open
Abstract
Retinal pigment epithelium (RPE) dysfunction and choroidal neovascularization (CNV) are predominant features of age-related macular degeneration (AMD), with an unclear mechanism. Herein, we show that RNA demethylase α-ketoglutarate-dependent dioxygenase alkB homolog 5 (ALKBH5) is up-regulated in AMD. In RPE cells, ALKBH5 overexpression associates with depolarization, oxidative stress, disturbed autophagy, irregular lipid homeostasis, and elevated VEGF-A secretion, which subsequently promotes proliferation, migration, and tube formation of vascular endothelial cells. Consistently, ALKBH5 overexpression in mice RPE correlates with various pathological phenotypes, including visual impairments, RPE anomalies, choroidal neovascularization (CNV), and interrupted retinal homeostasis. Mechanistically, ALKBH5 regulates retinal features through its demethylation activity. It targets PIK3C2B and regulates the AKT/mTOR signaling pathway with YTHDF2 as the N6-methyladenosine reader. IOX1, an ALKBH5 inhibitor, suppresses hypoxia-induced RPE dysfunction and CNV progression. Collectively, we demonstrate that ALKBH5 induces RPE dysfunction and CNV progression in AMD via PIK3C2B-mediated activation of the AKT/mTOR pathway. Pharmacological inhibitors of ALKBH5, like IOX1, are promising therapeutic options for AMD.
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Affiliation(s)
- Ru-Xu Sun
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Hong-Jing Zhu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Ye-Ran Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Jia-Nan Wang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Ying Wang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Qiu-Chen Cao
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Jiang-Dong Ji
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Chao Jiang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China
| | - Song-Tao Yuan
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Xue Chen
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Qing-Huai Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
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Liu X, Mao Z, Yuan M, Li L, Tan Y, Qu Z, Chen M, Yu F. Glomerular mTORC1 activation was associated with podocytes to endothelial cells communication in lupus nephritis. Lupus Sci Med 2023; 10:10/1/e000896. [PMID: 37147021 PMCID: PMC10163597 DOI: 10.1136/lupus-2023-000896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023]
Abstract
OBJECTIVE This study was initiated to evaluate the mammalian target of the rapamycin (mTOR) signalling pathway involved in renal endothelial-podocyte crosstalk in patients with lupus nephritis (LN). METHODS We compared the kidney protein expression patterns of 10 patients with LN with severe endothelial-podocyte injury and 3 patients with non-severe endothelial-podocyte injury on formalin-fixed paraffin-embedded kidney tissues using label-free liquid chromatography-mass spectrometry for quantitative proteomics analysis. Podocyte injury was graded by foot process width (FPW). The severe group was referred to patients with both glomerular endocapillary hypercellularity and FPW >1240 nm. The non-severe group included patients with normal endothelial capillaries and FPW in the range of 619~1240 nm. Gene Ontology (GO) enrichment analyses were performed based on the protein intensity levels of differentially expressed proteins in each patient. An enriched mTOR pathway was selected, and the activation of mTOR complexes in renal biopsied specimens was further verified in 176 patients with LN. RESULTS Compared with those of the non-severe group, 230 proteins were upregulated and 54 proteins were downregulated in the severe group. Furthermore, GO enrichment analysis showed enrichment in the 'positive regulation of mTOR signalling' pathway. The glomerular activation of mTOR complex 1 (mTORC1) was significantly increased in the severe group compared with the non-severe group (p=0.034), and mTORC1 was located in podocytes and glomerular endothelial cells. Glomerular activation of mTORC1 was positively correlated with endocapillary hypercellularity (r=0.289, p<0.001) and significantly increased in patients with both endocapillary hypercellularity and FPW >1240 nm (p<0.001). CONCLUSIONS Glomerular mTORC1 was highly activated in patients with both glomerular endocapillary hypercellularity and podocyte injury, which might be involved in podocytes to endothelial cells communication in lupus nephritis.
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Affiliation(s)
- Xiaotian Liu
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhaomin Mao
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Mo Yuan
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Linlin Li
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Ying Tan
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhen Qu
- Department of Nephrology, Peking University International Hospital, Beijing, China
| | - Min Chen
- Renal Division, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of lmmune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Feng Yu
- Department of Nephrology, Peking University International Hospital, Beijing, China
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Zhang M, Li L, Li S, Liu Z, Zhang N, Sun B, Wang Z, Jia D, Liu M, Wang Q. Development of Clioquinol Platinum(IV) Conjugates as Autophagy-Targeted Antimetastatic Agents. J Med Chem 2023; 66:3393-3410. [PMID: 36891739 DOI: 10.1021/acs.jmedchem.2c01895] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
A series of autophagy-targeted antimetastatic clioquinol (CLQ) platinum(IV) conjugates were designed and prepared by incorporating an autophagy activator CLQ into the platinum(IV) system. Complex 5 with the cisplatin core bearing dual CLQ ligands with potent antitumor properties was screened out as a candidate. More importantly, it displayed potent antimetastatic properties both in vitro and in vivo as expected. Mechanism investigation manifested that complex 5 induced serious DNA damage to increase γ-H2AX and P53 expression and caused mitochondria-mediated apoptosis through the Bcl-2/Bax/caspase3 pathway. Then, it promoted prodeath autophagy by suppressing PI3K/AKT/mTOR signaling and activating the HIF-1α/Beclin1 pathway. The T-cell immunity was elevated by restraining the PD-L1 expression and subsequently increasing CD3+ and CD8+ T cells. Ultimately, metastasis of tumor cells was suppressed by the synergistic effects of DNA damage, autophagy promotion, and immune activation aroused by CLQ platinum(IV) complexes. Key proteins VEGFA, MMP-9, and CD34 tightly associated with angiogenesis and metastasis were downregulated.
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Affiliation(s)
- Ming Zhang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Linming Li
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Suying Li
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Zhifang Liu
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Ning Zhang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Bin Sun
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Zhengping Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China.,Liaocheng High-Tech Biotechnology Co., Ltd, Liaocheng 252059, P. R. China
| | - Dianlong Jia
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Min Liu
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
| | - Qingpeng Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, P. R. China
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Candesartan protects against unilateral peripheral limb ischemia in type-2 diabetic rats: Possible contribution of PI3K-Akt-eNOS-VEGF angiogenic signaling pathway. Int Immunopharmacol 2023; 116:109817. [PMID: 36773570 DOI: 10.1016/j.intimp.2023.109817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/27/2023] [Accepted: 01/28/2023] [Indexed: 02/11/2023]
Abstract
Type-2 diabetes (T2DM) is known to be highly associated with increased risk for vascular complications including peripheral arterial diseases (PAD). Critical limb ischemia (CLI) is the most advanced stage of PAD. Current therapeutic options for diabetic patients experiencing vascular complications are limited to surgical revascularization with no effective pharmacotherapy available for clinical settings. This study is dedicated to evaluate the angiogenic potential of candesartan an angiotensin-II receptor blocker in an experimental model of vascular complications associating T2DM. T2DM was induced in rats through feeding with high fat diet for 6 weeks, followed by injection with streptozotocin (STZ, 30 mg/kg; i.p). After establishment of T2DM, unilateral CLI was induced through the ligation and excision of superficial femoral artery. Candesartan treatment (10 or 30 mg/kg; orally) was initiated one day post CLI and thereafter once daily for up to 14 days. T2DM rats that underwent CLI demonstrated impaired angiogenic signaling, increased inflammation and apoptosis in gastrocnemius muscle (GC). Candesartan reversed ischemic insult in T2DM rats subjected to unilateral CLI and induced reparative angiogenesis that was evident by increase in p-PI3K/PI3K, p-Akt/Akt, p-eNOS/eNOS, p-VEGFR2/VEGFR2 ratios, and VEGF levels. Candesartan treatment also increased levels of HO-1; while decreased caspase-3 apoptotic marker and levels of inflammatory markers; NF-κB and TNF-α, all of which were accompanied by preserved histological manifestations of GC muscles. Candesartan was able to combat limb ischemia under diabetic conditions which could pave the way for its therapeutic utility for diabetic patients experiencing vascular complications in clinical setting.
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Noureldeen AFH, Aziz SW, Shouman SA, Mohamed MM, Attia YM, Ramadan RM, Elhady MM. Molecular Design, Spectroscopic, DFT, Pharmacological, and Molecular Docking Studies of Novel Ruthenium(III)-Schiff Base Complex: An Inhibitor of Progression in HepG2 Cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192013624. [PMID: 36294202 PMCID: PMC9603487 DOI: 10.3390/ijerph192013624] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/28/2022] [Accepted: 10/04/2022] [Indexed: 05/03/2023]
Abstract
A novel ruthenium(III)-pyrimidine Schiff base was synthesized and characterized using different analytical and spectroscopic techniques. Molecular geometries of the ligand and ruthenium complex were investigated using the DFT-B3LYP level of theory. The quantum global reactivity descriptors were also calculated. Various biological and molecular docking studies of the complex are reported to explore its potential application as a therapeutic drug. Cytotoxicity of the complex was screened against cancer colorectal (HCT116), breast (MCF-7 and T47D), and hepatocellular (HepG2) cell lines as well as a human normal cell line (HSF). The complex effectively inhibited the tested cancer cells with variable degree with higher activity towards HepG2 (IC50 values were 29 μM for HepG2, 38.5 μM for T47D, 39.7 μM for HCT, and 46.7 μM for MCF-7 cells). The complex induced apoptosis and cell cycle arrest in the S phase of HepG2 cells. The complex significantly induced the expression of H2AX and caspase 3 and caspase 7 gene and the protein level of caspase 3, as well as inhibited VEGF-A and mTOR/AKT, SND1, and NF-kB gene expression. The molecular docking studies supported the increased total apoptosis of treated HepG2 cells due to strong interaction of the complex with DNA. Additionally, the possible binding interaction of the complex with caspase 3 could be responsible for the elevated activity of caspase 3-treated cells. The score values for the two receptors were -3.25 and -3.91 kcal/mol.
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Affiliation(s)
- Amani F. H. Noureldeen
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
- Correspondence: (A.F.H.N.); (R.M.R.)
| | - Safa W. Aziz
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
- Department of Laboratory and Clinical Sciences, College of Pharmacy, University of Babylon, Babylon 51002, Iraq
| | - Samia A. Shouman
- Cancer Biology Department, National Cancer Institute, Cairo University, Cairo 12613, Egypt
| | - Magdy M. Mohamed
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Yasmin M. Attia
- Cancer Biology Department, National Cancer Institute, Cairo University, Cairo 12613, Egypt
| | - Ramadan M. Ramadan
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
- Correspondence: (A.F.H.N.); (R.M.R.)
| | - Mostafa M. Elhady
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
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Liu W, Chen Y, Song X, Xue Y, Zhang Y. ZD6474 attenuates TGF-β1-induced fibrosis in human Tenon fibroblasts and inhibits neovascularization via AKT-mTOR signaling pathway. Int Ophthalmol 2022; 43:1523-1536. [PMID: 36227401 PMCID: PMC10149462 DOI: 10.1007/s10792-022-02548-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 10/06/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE To investigate the anti-fibrotic effect of ZD6474 (a novel inhibitor of VEGF and EGF) in TGF-β1 stimulated human Tenon's capsule fibroblasts (HTFs) and the anti-angiogenetic role in HUVECs, compared to that of mitomycin C (MMC). METHODS The effects of ZD6474 on cell proliferation or migration in TGF-β1-stimulated HTFs and HUVECs were determined, using CCK8 or wound healing assay, respectively. The typical markers of fibrosis in TGF-β1-stimuated HTFs were detected, vimentin by immunofluorescence, α-SMA and snail by western blot. Tube formation was applied to validate the anti-angiogenesis effect in HUVECs following ZD6474 treatment. Furthermore, phosphorylated AKT and mTOR (p-AKT and p-mTOR) were evaluated, compared to the standardized total AKT and mTOR, using western blot. RESULTS There was almost no decreased cell viability in HTFs following ZD6474 (≤ 1 μM/mL) treatment, but MMC (> 50 μg/mL) significantly impaired cell viability. ZD6474 significantly inhibited TGF-β1-stimulated proliferation and migration in HTFs, compared to control group (**P < 0.01). ZD6474 also significantly attenuated the TGF-β1-stimulated expression of vimentin, α-SMA and snail in HTFs. Tube formation was notably interrupted in HUVECs following ZD6474 treatment (**P < 0.01). P-AKT and p-mTOR were significantly decreased in response to ZD6474 treatment in TGF-β1- induced HTFs and HUVECs. CONCLUSIONS ZD6474 exerts anti-proliferation and anti-fibrotic effects in TGF-β1-stimulated HTFs perhaps via regulating AKT-mTOR signaling pathway. ZD6474 also inhibited proliferation, migration and tube formation in HUVECs via the same signaling pathway. We concluded that ZD6474 may be potentially a novel agent in preventing bleb dysfunction following glaucoma filtration surgery (GFS).
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Affiliation(s)
- Wenting Liu
- Department of Ophthalmology, Huadong Hospital, Fudan University, No. 221 East Yan'an Road, Shanghai, 200031, China
| | - Yaying Chen
- Department of Ophthalmology, Tongren Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Xiangyuan Song
- Department of Ophthalmology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Yiwen Xue
- Undergraduate School, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yuyan Zhang
- Department of Ophthalmology, Huadong Hospital, Fudan University, No. 221 East Yan'an Road, Shanghai, 200031, China.
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Wen X, Li S, Zhang Y, Zhu L, Xi X, Zhang S, Li Y. Recombinant human klotho protects against hydrogen peroxide-mediated injury in human retinal pigment epithelial cells via the PI3K/Akt-Nrf2/HO-1 signaling pathway. Bioengineered 2022; 13:11767-11781. [PMID: 35543385 PMCID: PMC9275962 DOI: 10.1080/21655979.2022.2071023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Globally, age-related macular degeneration (AMD) is a common irreversible ophthalmopathy. Oxidative stress of retinal pigment epithelial cells is involved in AMD occurrence and development. Klotho is an anti-aging protein with antioxidant properties. We investigated the protective properties of Klotho on hydrogen peroxide (H2O2)-induced injury of retinal pigment epithelial cells (ARPE-19 cells) and its associated pathomechanisms. We found that Klotho pretreatment for 24 h could up-regulate Bcl-2 levels, decrease the cleaved-caspase-3 and Bax levels, inhibit H2O2-induced ARPE-19 cell apoptosis, and promote cell proliferation. Klotho pretreatment inhibited the H2O2-mediated elevations of reactive oxygen species (ROS) in ARPE-19 cells. It enhanced antioxidant activities of the cells and restored the glutathione peroxidase (GPX), superoxide dismutase (SOD2), catalase (CAT), as well as malondialdehyde (MDA) levels to close to the normal level. N-acetylcysteine (NAC), a reactive oxygen scavenger, could reverse the harmful effects of H2O2 on proliferation, apoptosis, and oxidative stress of ARPE-19 cells. Further, Klotho pretreatment enhanced Akt phosphorylation and expression as well as nuclear translocation of Nrf2 in H2O2-treated ARPE-19 cells. This indicates that Klotho protects cells from oxidative stress by activating phosphatidylinositol 3 kinase (PI3K)/protein kinase B (Akt)-nuclear factor E2-related factor 2 (Nrf2)/heme oxygenase 1 (HO-1) signaling pathway. Klotho is, therefore, a potential preventive or treatment option for AMD.
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Affiliation(s)
- Xuewei Wen
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Song Li
- Department of Sport Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yanfei Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Liang Zhu
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xiaoting Xi
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Shuyuan Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yan Li
- Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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11
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mTOR Signaling Components in Tumor Mechanobiology. Int J Mol Sci 2022; 23:ijms23031825. [PMID: 35163745 PMCID: PMC8837098 DOI: 10.3390/ijms23031825] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 11/17/2022] Open
Abstract
Mechanistic target of rapamycin (mTOR) is a central signaling hub that integrates networks of nutrient availability, cellular metabolism, and autophagy in eukaryotic cells. mTOR kinase, along with its upstream regulators and downstream substrates, is upregulated in most human malignancies. At the same time, mechanical forces from the tumor microenvironment and mechanotransduction promote cancer cells’ proliferation, motility, and invasion. mTOR signaling pathway has been recently found on the crossroads of mechanoresponsive-induced signaling cascades to regulate cell growth, invasion, and metastasis in cancer cells. In this review, we examine the emerging association of mTOR signaling components with certain protein tools of tumor mechanobiology. Thereby, we highlight novel mechanisms of mechanotransduction, which regulate tumor progression and invasion, as well as mechanisms related to the therapeutic efficacy of antitumor drugs.
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