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Sun L, Guo S, Xie Y, Yao Y. The characteristics and the multiple functions of integrin β1 in human cancers. J Transl Med 2023; 21:787. [PMID: 37932738 PMCID: PMC10629185 DOI: 10.1186/s12967-023-04696-1] [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: 08/22/2023] [Accepted: 11/02/2023] [Indexed: 11/08/2023] Open
Abstract
Integrins, which consist of two non-covalently linked α and β subunits, play a crucial role in cell-cell adhesion and cell-extracellular matrix (ECM) interactions. Among them, integrin β1 is the most common subunit and has emerged as a key mediator in cancer, influencing various aspects of cancer progression, including cell motility, adhesion, migration, proliferation, differentiation and chemotherapy resistance. However, given the complexity and sometimes contradictory characteristics, targeting integrin β1 for therapeutics has been a challenge. The emerging understanding of the mechanisms regulating by integrin β1 may guide the development of new strategies for anti-cancer therapy. In this review, we summarize the multiple functions of integrin β1 and signaling pathways which underlie the involvement of integrin β1 in several malignant cancers. Our review suggests the possibility of using integrin β1 as a therapeutic target and highlights the need for patient stratification based on expression of different integrin receptors in future clinical studies.
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Affiliation(s)
- Li Sun
- Department of Clinical Laboratory, Kunshan First People's Hospital, Affiliated to Jiangsu University, Kunshan, 215300, People's Republic of China
| | - Shuwei Guo
- Department of Clinical Laboratory, Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, People's Republic of China
| | - Yiping Xie
- Department of Clinical Laboratory, Kunshan First People's Hospital, Affiliated to Jiangsu University, Kunshan, 215300, People's Republic of China
| | - Yongliang Yao
- Department of Clinical Laboratory, Kunshan First People's Hospital, Affiliated to Jiangsu University, Kunshan, 215300, People's Republic of China.
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Oleksiewicz U, Machnik M, Sobocińska J, Molenda S, Olechnowicz A, Florczak A, Smolibowski M, Kaczmarek M. ZNF714 Supports Pro-Oncogenic Features in Lung Cancer Cells. Int J Mol Sci 2023; 24:15530. [PMID: 37958512 PMCID: PMC10649060 DOI: 10.3390/ijms242115530] [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: 09/07/2023] [Revised: 10/10/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023] Open
Abstract
Despite the ongoing progress in diagnosis and treatments, cancer remains a threat to more than one-third of the human population. The emerging data indicate that many Krüppel-associated box zinc finger proteins (KRAB-ZNF) belonging to a large gene family may be involved in carcinogenesis. Our previous study identified Zinc Finger Protein 714 (ZNF714), a KRAB-ZNF gene of unknown function, as being commonly overexpressed in many tumors, pointing to its hypothetical oncogenic role. Here, we harnessed The Cancer Genome Atlas (TCGA)-centered databases and performed functional studies with transcriptomic and methylomic profiling to explore ZNF714 function in cancer. Our pan-cancer analyses confirmed frequent ZNF714 overexpression in multiple tumors, possibly due to regional amplification, promoter hypomethylation, and Nuclear Transcription Factor Y Subunit Beta (NFYB) signaling. We also showed that ZNF714 expression correlates with tumor immunosuppressive features. The in vitro studies indicated that ZNF714 expression positively associates with proliferation, migration, and invasion. The transcriptomic analysis of ZNF714 knocked-down cells demonstrated deregulation of cell adhesion, migration, proliferation, apoptosis, and differentiation. Importantly, we provided evidence that ZNF714 negatively regulates the expression of several known TSGs indirectly via promoter methylation. However, as ZNF714 did not show nuclear localization in our research model, the regulatory mechanisms exerted by ZNF714 require further investigation. In conclusion, our results reveal, for the first time, that ZNF714 may support pro-oncogenic features in lung cancer cells.
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Affiliation(s)
- Urszula Oleksiewicz
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
| | - Marta Machnik
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
| | - Joanna Sobocińska
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
| | - Sara Molenda
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
- Doctoral School, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Anna Olechnowicz
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Doctoral School, Poznan University of Medical Sciences, 60-812 Poznan, Poland
- Department of Histology and Embryology, Poznan University of Medical Sciences, Swiecickiego 6 Street, 60-781 Poznan, Poland
| | - Anna Florczak
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
| | - Mikołaj Smolibowski
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
| | - Mariusz Kaczmarek
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Center, Garbary 15, 61-866 Poznan, Poland
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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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Matsumoto Y, Kage H, Morota M, Zokumasu K, Ando T, Maemura K, Watanabe K, Kawakami M, Hinata M, Ushiku T, Nakajima J, Nagase T. Integrin alpha 2 is associated with tumor progression and postoperative recurrence in non-small cell lung cancer. Jpn J Clin Oncol 2023; 53:63-73. [PMID: 36151049 DOI: 10.1093/jjco/hyac148] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 08/29/2022] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Integrins are transmembrane proteins that mediate cell adhesion to extracellular matrix. Whereas expression of integrin alpha 2 is associated with motility, invasiveness and cellular differentiation in various tumors, the role of integrin alpha 2 in lung cancer has not been studied in detail. The aim of this study was to determine whether and how aberrant integrin alpha 2 expression in non-small cell lung cancer leads to different outcomes. METHODS We measured expression of integrin alpha 2 by quantitative polymerase chain reaction in 100 samples collected from non-small cell lung cancer patients who had undergone surgical resection. We assigned patients to high and low expression groups and analyzed survival. Cellular morphology, adhesion, proliferation, migration and invasion were examined in human lung cancer cell lines. RESULTS Among 100 cases, 41 were female, with a median age of 71 years. High expression of integrin alpha 2 in non-small cell lung cancer was associated with lower recurrence-free survival (P = 0.004). Overexpression of integrin alpha 2 in cell lines had no effect on cell proliferation or invasion but resulted in increased cell size (1416 μm2 versus 470 μm2 in H522 cells, P < 0.001; 1822 μm2 versus 1029 μm2 in H661 cells, P = 0.02), adhesion (P < 0.001 in H522 and H661 cells) and migration (gap area filled was 71% versus 36% in H522 cells, P < 0.001; 57% versus 26% in H661 cells, P = 0.001). These changes were suppressed by E7820, an inhibitor of integrin alpha 2. CONCLUSIONS Integrin alpha 2 may play a significant role in lung cancer adhesion and migration, and may lead to a higher risk of recurrence.
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Affiliation(s)
- Yoko Matsumoto
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Hidenori Kage
- Next-Generation Precision Medicine Development Laboratory, The University of Tokyo, Tokyo, Japan
| | - Mizuki Morota
- Department of Thoracic Surgery, The University of Tokyo, Tokyo, Japan
| | - Koichi Zokumasu
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Takahiro Ando
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Keita Maemura
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
| | - Kousuke Watanabe
- Department of Clinical Laboratory, The University of Tokyo, Tokyo, Japan
| | - Masanori Kawakami
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
| | | | - Tetsuo Ushiku
- Department of Pathology, The University of Tokyo, Tokyo, Japan
| | - Jun Nakajima
- Department of Thoracic Surgery, The University of Tokyo, Tokyo, Japan
| | - Takahide Nagase
- Department of Respiratory Medicine, The University of Tokyo, Tokyo, Japan
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Li C, Liu J, Yang W, Chen C, Wu B. The relationship among integrin alpha 7, CD133 and Nestin as well as their correlation with clinicopathological features and prognosis in astrocytoma patients. Clin Neurol Neurosurg 2022; 217:107198. [DOI: 10.1016/j.clineuro.2022.107198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/07/2022] [Accepted: 03/02/2022] [Indexed: 11/29/2022]
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Yuan N, Wang L, Xi Q, Zou N, Zhang X, Lu X, Zhang Z. ITGA7, CD133, ALDH1 are inter-correlated, and linked with poor differentiation, lymph node metastasis as well as worse survival in surgical cervical cancer. J Obstet Gynaecol Res 2022; 48:1011-1018. [PMID: 35194895 PMCID: PMC9305462 DOI: 10.1111/jog.15163] [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: 10/22/2021] [Revised: 01/12/2022] [Accepted: 01/16/2022] [Indexed: 11/30/2022]
Abstract
AIM Integrin alpha 7 (ITGA7) regulates cancer stemness and metastasis in several malignancies, while its role in cervical cancer is obscure. Therefore, the current study aimed to investigate the correlation among ITGA7, cluster of differentiation 133 (CD133), and aldehyde dehydrogenase isoform 1 (ALDH1), as well as their relation to tumor features and survival in cervical cancer patients. METHODS A total of 133 surgical cervical cancer patients were enrolled. Tumor ITGA7, CD133, and ALDH1 expressions were determined by immunohistochemistry (IHC). Furthermore, the clinicopathological features, disease-free survival (DFS), and overall survival (OS) were collected. RESULTS ITGA7 expression positively related to CD133 expression (p = 0.040) and ALDH1 expression (p < 0.001). Besides, ITGA7 (p = 0.001), CD133 (p = 0.016), and ALDH1 (p = 0.009) high expressions linked with poor tumor differentiation; meanwhile, ITGA7 (p = 0.010) and ALDH1 (p = 0.004) high expressions correlated with more prevalence of lymph node metastasis. However, ITGA7, CD133, or ALDH1 expression was not associated with other clinicopathological features. Inspiringly, it was worth noting that ITGA7 (p = 0.009), CD133 (p = 0.041), and ALDH1 (p = 0.035) high expressions predicted unfavorable DFS; meanwhile, both ITGA7 (p = 0.021) and ALDH1 (p = 0.023) high expressions but not CD133 expression (p = 0.169) forecasted exasperated OS. CONCLUSION ITGA7, CD133, ALDH1 are inter-correlated, and linked with poor differentiation, lymph node metastasis as well as worse survival in surgical cervical cancer.
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Affiliation(s)
- Na Yuan
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Lei Wang
- Department of Severe Care Unit, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Qiang Xi
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Niandong Zou
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Xianyu Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Xiurong Lu
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
| | - Zhilin Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China
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Expression and Prognostic Analysis of Integrins in Gastric Cancer. JOURNAL OF ONCOLOGY 2020; 2020:8862228. [PMID: 33335550 PMCID: PMC7722456 DOI: 10.1155/2020/8862228] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/28/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022]
Abstract
Background Integrins are involved in the biological process of a variety of cancers, but their importance in the diagnosis and prognosis of gastric cancer (GC) is still unclear. Therefore, this study aimed at exploring the significance of ITG gene expression in GC to evaluate its diagnosis and prognosis. Methods GEPIA data were used to evaluate the mRNA expression of ITG genes in GC patients. The prognostic value of these genes was assessed by analyzing their mRNA expression using the Kaplan–Meier curve. The biological function of ITG genes was evaluated by GC tissue sequencing combined with GSEA bioinformatics. Based on the sequencing data, ITGA5 with the largest expression difference was selected for verification, and RT-PCR was used to verify its mRNA expression level in 40 pairs of GC and normal tissues. Results ITG (A2, A3, A4, A5, A6, A11, AE, AL, AM, AV, AX, B1, B2, B4, B5, B6, and B8) was highly expressed in GC tissues, while ITGA8 was low, compared with their expression in normal tissues. RNA-seq data shows that ITG (A2, A5, A11, AV, and B1) expression was associated with poor prognosis and overall survival. In addition, combined with the results of GC tissue mRNA sequencing, it was further found that the differentially expressed genes in the ITGs genes. ITGA5 was highly expressed in GC tissues compared with its expression in normal tissues, as evaluated by qRT–PCR (P < 0.001) and ROC (P < 0.001, AUC (95% CI) = 0.747 (0.641–0.851)), and confirmed that ITGA5 expression was a potential diagnostic marker for GC. Bioinformatics analysis revealed that the signaling pathway involved in ITGA5 was mainly enriched in focal adhesion, ECM-receptor interaction, and PI3K-AKT and was mainly involved in biological processes such as cell adhesion, extracellular matrix, and cell migration. Conclusion This study suggested that ITGs were associated with the diagnosis and prognosis of GC and discovered the prognostic value and biological role of ITGA5 in GC. Thus, ITGA5 might be used as a potential diagnostic marker for GC.
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Chai Z, Yang Y, Gu Z, Cai X, Ye W, Kong L, Qiu X, Ying L, Wang Z, Wang L. Recombinant Viral Capsid Protein L2 (rVL2) of HPV 16 Suppresses Cell Proliferation and Glucose Metabolism via ITGB7/C/EBPβ Signaling Pathway in Cervical Cancer Cell Lines. Onco Targets Ther 2019; 12:10415-10425. [PMID: 31819523 PMCID: PMC6890187 DOI: 10.2147/ott.s228631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 11/11/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose Capsid protein L2 is the minor capsid protein of human papillomavirus 16 (HPV16). Although L2-based vaccines were developed, the therapeutic effect of recombinant viral capsid protein L2 (rVL2) was still to be illustrated. Methods We used glucose uptake and lactate production assay to verify the inhibitory effect of rVL2 on the glucose metabolism in cervical cancer cells. Secondly, we performed gene-chip assay, RT-PCR, and Western blot to determine the role of ITGB7/C/EBPβ signaling pathway in rVL2-mediated glucose metabolism in vitro. Finally, we used an animal model to verify the function of rVL2 in cervical cancer. Results We found that rVL2 reduced glucose uptake and lactate production levels in cervical cancer cells, which caused the inhibition of cell proliferation. rVL2 decreased the expression levels of key metabolic enzymes, including GLUT1, LDHA, and ALDOA, to affect cell metabolism in cervical cancer cells by inhibiting ITGB7/C/EBPβ signaling pathway in vitro and in vivo. Conclusion These results demonstrated the vital role of rVL2 in the glycolysis-induced cell growth and proliferation via suppressing ITGB7/C/EBPβ signaling axis.
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Affiliation(s)
- Zhihong Chai
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Yufei Yang
- Department of Obstetrics and Gynecology, Xihua Hospital Affiliated to Shanghai Jiaotong University School Medicine, Shanghai 200092, People's Republic of China.,Department of Gynecological Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, People's Republic of China
| | - ZhongYi Gu
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai 201102, People's Republic of China
| | - Xianli Cai
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Wenwei Ye
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Lin Kong
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Xiaoxiao Qiu
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Lingxiao Ying
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
| | - Ziliang Wang
- Department of Obstetrics and Gynecology, Xihua Hospital Affiliated to Shanghai Jiaotong University School Medicine, Shanghai 200092, People's Republic of China.,Department of Gynecological Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, People's Republic of China
| | - Linyou Wang
- Department of Gynecology and Department of Radiology, Taizhou Municipal Hospital Affiliated to Taizhou University School of Medicine, Taizhou 318000, People's Republic of China
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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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