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Cloutier G, Seltana A, Fallah S, Beaulieu JF. Integrin α7β1 represses intestinal absorptive cell differentiation. Exp Cell Res 2023; 430:113723. [PMID: 37499931 DOI: 10.1016/j.yexcr.2023.113723] [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: 03/28/2023] [Revised: 07/14/2023] [Accepted: 07/22/2023] [Indexed: 07/29/2023]
Abstract
Intestinal epithelial cell differentiation is a highly controlled and orderly process occurring in the crypt so that cells migrating out to cover the villi are already fully functional. Absorptive cell precursors, which originate from the stem cell population located in the lower third of the crypt, are subject to several cycles of amplification in the transit amplifying (TA) zone, before reaching the terminal differentiation compartment located in the upper third. There is a large body of evidence that absorptive cell differentiation is halted in the TA zone through various epigenetic, transcriptional and intracellular signalling events or mechanisms allowing the transient expansion of this cell population but how these mechanisms are themself regulated remains obscure. One clue can be found in the epithelial cell-matrix microenvironment located all along the crypt-villus axis. Indeed, a previous study from our group revealed that α5-subunit containing laminins such as lamimin-511 and 512 inhibit early stages of differentiation in Caco-2/15 cells. Among potential receptors for laminin 511/512 is the integrin α7β1, which has previously been reported to be expressed in the human intestinal crypts and in early stages of Caco-2/15 cell differentiation. In this study, the effects of knocking down ITGA7 in Caco-2/15 cells were studied using shRNA and CRISPR/Cas9 strategies. Abolition of the α7 integrin subunit resulted in a significant increase in the level of differentiation and polarization markers as well as the morphological features of intestinal cells. Activities of focal adhesion kinase and Src kinase were both reduced in α7-knockdown cells while the three major intestinal pro-differentiation factors CDX2, HNFα1 and HNF4α were overexpressed. Two epigenetic events associated with intestinal differentiation, the reduction of tri-methylated lysine 27 on histone H3 and the increase of acetylation of histone H4 were also observed in α7-knockdown cells. On the other hand, the ablation of α7 had no effect on cell proliferation. In conclusion, these data indicate that integrin α7β1 acts as a major repressor of absorptive cell terminal differentiation in the Caco-2/15 cell model and suggest that the laminin-α7β1 integrin interaction occurring in the transit amplifying zone of the adult intestine is involved in the transient halting of absorptive cell terminal differentiation.
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Affiliation(s)
- Gabriel Cloutier
- Laboratory of Intestinal Physiopathology, Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Amira Seltana
- Laboratory of Intestinal Physiopathology, Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Sepideh Fallah
- Laboratory of Intestinal Physiopathology, Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Jean-François Beaulieu
- Laboratory of Intestinal Physiopathology, Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada.
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Tseng TH, Shao YC, Lee YJ, Lee HJ. 2-(4-Benzyloxy-3-methoxyphenyl)-5-(carbethoxyethylene)-7-methoxy-benzofuran, a Benzofuran Derivative, Suppresses Metastasis Effects in P53-Mutant Hepatocellular Carcinoma Cells. Biomedicines 2023; 11:2027. [PMID: 37509669 PMCID: PMC10377018 DOI: 10.3390/biomedicines11072027] [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: 05/26/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
2-(4-Benzyloxy-3-methoxyphenyl)-5-(carbethoxyethylene)-7-methoxy-benzofuran (BMBF), a benzofuran derivative, is an intermediate found in the process of total synthesis of ailanthoidol. Benzofuran derivatives are a class of compounds that possess various biological and pharmacological activities. The present study explored the anti-metastasis effects of BMBF in hepatocellular carcinoma (HCC). Our preliminary findings indicate that BMBF suppresses the proliferation and changes the morphology of Huh7-an HCC cell line with a mutated p53 gene (Y220C). According to a scratching motility assay, non-cytotoxic concentrations of BMBF significantly inhibited the motility and migration in Huh7 cells. BMBF upregulated the expression of E-cadherin and downregulated the expression of vimentin, Slug, and MMP9, which are associated with epithelial-mesenchymal transition (EMT) and metastasis in Huh7 cells. BMBF decreased the expression of integrin α7, deactivated its downstream signal FAK/AKT, and inhibited p53 protein levels. Cell transfection with p53 siRNA resulted in the prevention of cell invasion because of the reduction in integrin α7, Slug, and MMP-9 in Huh7 cells. BMBF had anti-metastatic effects in PLC/PRF/5-an HCC cell line with R249S, a mutated p53 gene. Our findings indicate that BMBF has anti-metastatic effects in downregulating p53 and mediating the suppression of integrin α7, EMT, and MMP-9 in HCC cells with a mutated p53 gene.
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Affiliation(s)
- Tsui-Hwa Tseng
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
- Department of Medical Education, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Yi-Chia Shao
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Yean-Jang Lee
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan
| | - Huei-Jane Lee
- Department of Biochemistry, School of Medicine, College of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
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Wu Z, Kong X, Wang Z. Integrin α7 knockdown suppresses cell proliferation, migration, invasion and EMT in hepatocellular carcinoma. Exp Ther Med 2021; 21:309. [PMID: 33717252 PMCID: PMC7885058 DOI: 10.3892/etm.2021.9740] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 09/18/2020] [Indexed: 12/27/2022] Open
Abstract
The present study aimed to investigate the effects of integrin α7 (ITGA7) on regulating hepatocellular carcinoma (HCC) progression and endothelial-mesenchymal transition (EMT). ITGA7 mRNA and protein expression in human normal liver epithelial cells and HCC cell lines were determined by reverse transcription-quantitative PCR (RT-qPCR) and western blotting. ITGA7 small interfering RNA [siRNA; ITGA7-knockdown (KD) group] and nonsense siRNA (control group) were transfected into Huh7 cells and SNU449 cells, respectively. ITGA7 mRNA and protein expression (RT-qPCR and western blotting, respectively), cell proliferation (Cell Counting Kit-8 assay), apoptosis (annexin V/propidium iodide assay), migration (wound scratch assay) and invasion (Transwell assay) were then detetected. E-cadherin, α-smooth muscle actin (α-SMA), vimentin and V-cadherin levels (RT-qPCR and western blotting) were also assessed. ITGA7 mRNA and protein expression levels were increased in Li7, Huh7, SKHEP1 and SNU449 cells compared with THLE-3 cells. Following transfection, ITGA7 mRNA and protein expression was lower in the ITGA7-KD group compared with that in the control group in both Huh7 and SNU449 cells, indicating successful transfection. In the ITGA7-KD group, cell proliferation decreased at 48 and 72 h, cell apoptosis rates increased at 48 h, cell migration rate was reduced at 24 h and cell invasion decreased at 24 h compared with the control group. Additionally, increased E-cadherin but decreased α-SMA, vimentin and V-cadherin mRNA and protein expression levels were observed in the ITGA7-KD group compared with the control group at 24 h. In conclusion, ITGA7 knockdown suppressed HCC progression and inhibited EMT in HCC in vitro, implying that ITGA7 might be a novel treatment target for HCC.
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Affiliation(s)
- Zhiyong Wu
- Department of General Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
| | - Xiaoyu Kong
- Department of General Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
| | - Zhihui Wang
- Department of General Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
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Kobayashi N, Oda T, Takizawa M, Ishizaki T, Tsukamoto N, Yokohama A, Takei H, Saitoh T, Shimizu H, Honma K, Kimura-Masuda K, Kuroda Y, Ishihara R, Murakami Y, Murakami H, Handa H. Integrin α7 and Extracellular Matrix Laminin 211 Interaction Promotes Proliferation of Acute Myeloid Leukemia Cells and Is Associated with Granulocytic Sarcoma. Cancers (Basel) 2020; 12:E363. [PMID: 32033262 PMCID: PMC7072541 DOI: 10.3390/cancers12020363] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/08/2020] [Accepted: 01/21/2020] [Indexed: 12/17/2022] Open
Abstract
Acute myeloid leukemia (AML) with granulocytic sarcoma (GS) is characterized by poor prognosis; however, its underlying mechanism is unclear. Bone marrow samples from 64 AML patients (9 with GS and 55 without GS) together with AML cell lines PL21, THP1, HL60, Kasumi-1, and KG-1 were used to elucidate the pathology of AML with GS. RNA-Seq analyses were performed on samples from seven AML patients with or without GS. Gene set enrichment analyses revealed significantly upregulated candidates on the cell surface of the GS group. Expression of the adhesion integrin α7 (ITGA7) was significantly higher in the GS group, as seen by RT-qPCR (p = 0.00188) and immunohistochemistry of bone marrow formalin-fixed, paraffin-embedded (FFPE) specimens. Flow cytometry revealed enhanced proliferation of PL21 and THP1 cells containing surface ITGA7 in the presence of laminin 211 and stimulated ERK phosphorylation; this effect was abrogated following ITGA7 knockdown or ERK inhibition. Overall, high ITGA7 expression was associated with poor patient survival (p = 0.0477). In summary, ITGA7 is highly expressed in AML with GS, and its ligand (laminin 211) stimulates cell proliferation through ERK signaling. This is the first study demonstrating the role of integrin α7 and extracellular matrix interactions in AML cell proliferation and extramedullary disease development.
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Affiliation(s)
- Nobuhiko Kobayashi
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
| | - Tsukasa Oda
- Laboratory of Molecular Genetics, The Institute for Molecular and Cellular Regulation, Gunma University, Maebashi 371-8510, Japan;
| | - Makiko Takizawa
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
| | - Takuma Ishizaki
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
| | | | - Akihiko Yokohama
- Blood Transfusion Service, Gunma University Hospital, Maebashi 371-8510, Japan;
| | - Hisashi Takei
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
| | - Takayuki Saitoh
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Hiroaki Shimizu
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
| | - Kazuki Honma
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Kei Kimura-Masuda
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Yuko Kuroda
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Rei Ishihara
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Yuki Murakami
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Hirokazu Murakami
- Graduate school of Health Science, Gunma University, Maebashi 371-8510, Japan; (T.S.); (K.H.); (K.K.-M.); (Y.K.); (R.I.); (Y.M.); (H.M.)
| | - Hiroshi Handa
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan; (N.K.); (M.T.); (T.I.); (H.T.); (H.S.)
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Parkin A, Man J, Timpson P, Pajic M. Targeting the complexity of Src signalling in the tumour microenvironment of pancreatic cancer: from mechanism to therapy. FEBS J 2019; 286:3510-3539. [PMID: 31330086 PMCID: PMC6771888 DOI: 10.1111/febs.15011] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 05/26/2019] [Accepted: 07/19/2019] [Indexed: 02/06/2023]
Abstract
Pancreatic cancer, a disease with extremely poor prognosis, has been notoriously resistant to virtually all forms of treatment. The dynamic crosstalk that occurs between tumour cells and the surrounding stroma, frequently mediated by intricate Src/FAK signalling, is increasingly recognised as a key player in pancreatic tumourigenesis, disease progression and therapeutic resistance. These important cues are fundamental for defining the invasive potential of pancreatic tumours, and several components of the Src and downstream effector signalling have been proposed as potent anticancer therapeutic targets. Consequently, numerous agents that block this complex network are being extensively investigated as potential antiinvasive and antimetastatic therapeutic agents for this disease. In this review, we will discuss the latest evidence of Src signalling in PDAC progression, fibrotic response and resistance to therapy. We will examine future opportunities for the development and implementation of more effective combination regimens, targeting key components of the oncogenic Src signalling axis, and in the context of a precision medicine-guided approach.
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Affiliation(s)
- Ashleigh Parkin
- The Kinghorn Cancer CentreThe Garvan Institute of Medical ResearchSydneyAustralia
| | - Jennifer Man
- The Kinghorn Cancer CentreThe Garvan Institute of Medical ResearchSydneyAustralia
| | - Paul Timpson
- The Kinghorn Cancer CentreThe Garvan Institute of Medical ResearchSydneyAustralia
- Faculty of MedicineSt Vincent's Clinical SchoolUniversity of NSWSydneyAustralia
| | - Marina Pajic
- The Kinghorn Cancer CentreThe Garvan Institute of Medical ResearchSydneyAustralia
- Faculty of MedicineSt Vincent's Clinical SchoolUniversity of NSWSydneyAustralia
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Xia D, Chen B, Yang X. Correlation of integrin alpha 7 with clinicopathological characteristics and survival profiles, as well as its regulatory role in cell proliferation, apoptosis, and stemness in non-small-cell lung cancer. J Clin Lab Anal 2019; 33:e22973. [PMID: 31418948 PMCID: PMC6805269 DOI: 10.1002/jcla.22973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/17/2019] [Accepted: 06/20/2019] [Indexed: 12/18/2022] Open
Abstract
Background The present study aimed to evaluate the correlation of integrin alpha 7 (ITGA7) with patients' clinicopathological characteristics and survival profiles, as well as its influence on cell proliferation, apoptosis, and stemness in non–small‐cell lung cancer (NSCLC). Methods A total of 397 NSCLC patients underwent surgical resection were included, and ITGA7 was measured in tumor tissues and adjacent tissues by immunohistochemistry. patients' clinical data were extracted from database, and follow‐up records were reviewed. In cellular experiments, expression of ITGA7 was measured in NSCLC cell lines and normal human lung epithelial cell line by RT‐qPCR. The influence of ITGA7 on cell activity was assessed by transfecting overexpression plasmids and knockdown plasmids of ITGA7 into A549 cells. Results Integrin alpha 7 was upregulated in tumor tissues compared with the adjacent tissues of NSCLC patients. Patients with ITGA7 high expression presented poorer pathological differentiation, larger tumor size, and more advanced TNM stage compared with patients with ITGA7 low expression. For survival profiles, both disease‐free survival and overall survival were shorter in ITGA7 high expression patients compared with ITGA7 low expression patients. In cellular experiments, ITGA7 was upregulated in NCI‐H1650, A549, HCC‐827, and NCI‐H1299 cells compared with normal human lung epithelial cells BEAS‐2B. In addition, ITGA7 promoted cell proliferation, inhibited cell apoptosis, and facilitated cell stemness in A549 cells. Conclusion Integrin alpha 7 correlates with poor clinicopathological characteristics and survival profiles, and it promotes cell proliferation, stemness but suppresses cell apoptosis in NSCLC.
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Affiliation(s)
- Dongping Xia
- Department of Respiratory, The Central Hospital of WuHan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Beibei Chen
- Department of Respiratory, The Central Hospital of WuHan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xun Yang
- Department of Respiratory, The Central Hospital of WuHan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Engl T, Rutz J, Maxeiner S, Fanguen S, Juengel E, Koschade S, Roos F, Khoder W, Tsaur I, Blaheta RA. Acquired resistance to temsirolimus is associated with integrin α7 driven chemotactic activity of renal cell carcinoma in vitro. Oncotarget 2018; 9:18747-18759. [PMID: 29721158 PMCID: PMC5922352 DOI: 10.18632/oncotarget.24650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 02/27/2018] [Indexed: 11/25/2022] Open
Abstract
The mechanistic target of the rapamycin (mTOR) inhibitor, temsirolimus, has significantly improved the outcome of patients with renal cell carcinoma (RCC). However, development of temsirolimus-resistance limits its effect and metastatic progression subsequently recurs. Since integrin α7 (ITGA7) is speculated to promote metastasis, this investigation was designed to investigate whether temsirolimus-resistance is associated with altered ITGA7 expression in RCC cell lines and modified tumor cell adhesion and invasion. Caki-1, KTCTL-26, and A498 RCC cell lines were driven to temsirolimus-resistance by exposing them to temsirolimus over a period of 12 months. Subsequently, adhesion to human umbilical vein endothelial cells, to immobilized fibronectin, or collagen was investigated. Chemotaxis was evaluated with a modified Boyden chamber assay and ITGA7 expression by flow cytometry and western blotting. Chemotaxis significantly decreased in temsirolimus-sensitive cell lines upon exposure to low-dosed temsirolimus, but increased in temsirolimus-resistant tumor cells upon reexposure to the same temsirolimus dose. The increase in chemotaxis was accompanied by elevated ITGA7 at the cell surface membrane with simultaneous reduction of intracellular ITGA7. ITGA7 knock-down significantly diminished motility of temsirolimous-sensitive cells but elevated chemotactic activity of temsirolimus-resistant Caki-1 and KTCTL-26 cells. Therefore, ITGA7 appears closely linked to adhesion and migration regulation in RCC cells. It is postulated that temsirolimus-resistance is associated with translocation of ITGA7 from inside the cell to the outer surface. This switch forces RCC migration forward. Whether ITGA7 can serve as an important target in combatting RCC requires further investigation.
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Affiliation(s)
- Tobias Engl
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Jochen Rutz
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | | | - Sorel Fanguen
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Eva Juengel
- Department of Urology, Goethe-University, Frankfurt am Main, Germany.,Current address: Department of Urology and Pediatric Urology, University Medical Center Mainz, Mainz, Germany
| | - Sebastian Koschade
- Department of Medicine II, Hematology and Oncology, Goethe-University, Frankfurt am Main, Germany
| | - Frederik Roos
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Wael Khoder
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Igor Tsaur
- Department of Urology, Goethe-University, Frankfurt am Main, Germany.,Current address: Department of Urology and Pediatric Urology, University Medical Center Mainz, Mainz, Germany
| | - Roman A Blaheta
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
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Carrasco-Garcia E, Auzmendi-Iriarte J, Matheu A. Integrin α7: a novel promising target in glioblastoma stem cells. Stem Cell Investig 2018; 5:2. [PMID: 29430458 DOI: 10.21037/sci.2017.12.05] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/26/2017] [Indexed: 01/09/2023]
Affiliation(s)
- Estefania Carrasco-Garcia
- Cellular Oncology group, Biodonostia Health Research Institute, San Sebastian, Spain.,CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Madrid, Spain
| | | | - Ander Matheu
- Cellular Oncology group, Biodonostia Health Research Institute, San Sebastian, Spain.,CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Madrid, Spain.,IKERBASQUE, Basque Foundation, Bilbao, Spain
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