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Li B, Li X, Yang Q, Jiang Y, Zhang Q, Zhang J, Cui W, Xu F. Overexpression of SPP1 is a prognostic indicator of immune infiltration in lung adenocarcinoma. Aging (Albany NY) 2024; 16:2953-2977. [PMID: 38329443 PMCID: PMC10911343 DOI: 10.18632/aging.205526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/03/2024] [Indexed: 02/09/2024]
Abstract
OBJECTIVE The extracellular phosphoprotein, secreted phosphoprotein 1 (SPP1), plays a crucial role in various tumors and regulating the immune system. This study aimed to evaluate its prognostic value and relationship to immune infiltration in lung adenocarcinoma (LUAD). METHODS In the TCGA and GEO datasets, the information on clinic and transcriptome analysis of SPP1 in non-small-cell lung cancer (NSCLC) was examined accordingly. The association of SPP1 expression with overall survival and clinicopathologic characteristics was investigated by univariate and multivariate analysis. CancerSEA database was utilized to investigate the role of SPP1 at the cellular level by single-cell analysis. Additionally, the CIBERSORT algorithm was utilized to assess the correlation among the immune cells that infiltrated. RESULTS NSCLC tissues exhibited a notable rise in SPP1 expression compared with that of normal tissues. Furthermore, the overexpression of SPP1 was substantially associated with clinicopathological features and unfavorable survival outcomes in individuals with LUAD, whereas no such correlation was observed in lung squamous cell carcinoma. Immune cells that infiltrate tumors and their corresponding genes were associated with SPP1 expression levels in LUAD. CONCLUSIONS SPP1 is a reliable indicator for assessing LUAD immune infiltration status and prognosis. With this approach, SPP1 can help earlier LUAD diagnosis and act as a possible immunotherapy target.
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Affiliation(s)
- Binbin Li
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Xue Li
- College of Acupuncture and Massage, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Qingfeng Yang
- Department of Pneumology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Yiyang Jiang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Qianwen Zhang
- College of Acupuncture and Massage, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Jingtao Zhang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Wenqiang Cui
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Fei Xu
- Department of Pneumology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China
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Zeng J, Gao W, Tang Y, Wang Y, Liu X, Yin J, Su X, Zhang M, Kang E, Tian Y, Ni B, He W. Hypoxia-sensitive cells trigger NK cell activation via the KLF4-ASH1L-ICAM-1 axis, contributing to impairment in the rat epididymis. Cell Rep 2023; 42:113442. [PMID: 37952156 DOI: 10.1016/j.celrep.2023.113442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 08/31/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023] Open
Abstract
Male infertility is a global health problem especially prevalent in high-altitude regions. The epididymis is essential for sperm maturation, but the influence of environmental cues on its reshaping remains poorly understood. Here, we use single-cell transcriptomics to track the cellular profiles of epidydimal cells in rats raised under normoxia or extended hypoxia. The results show that hypoxia impairs epididymal function, evident in reduced epithelial cells, compromised blood-epididymis barrier integrity, and increased natural killer cells. Through combined analysis of gene-regulatory networks and cell-cell interaction maps, we identify epididymal hypoxia-sensitive cells that communicate with natural killer (NK) cells via increased intercellular adhesion molecule 1 (ICAM-1) driven by KLF4 recruitment of the histone methyltransferase ASL1L to the Icam1 promoter. Taken together, our study offers a detailed blueprint of epididymal changes during hypoxia and defines a KLF4-ALSH1L-ICAM-1 axis contributing to NK cell activation, yielding a potential treatment targeting hypoxia-induced infertility.
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Affiliation(s)
- Jitao Zeng
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Weiwu Gao
- Institute of Immunology, People's Liberation Army (PLA), and Department of Immunology, College of Basic Medicine, Army Medical University, Chongqing, China
| | - Ying Tang
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Ying Wang
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Xiaona Liu
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Jun Yin
- Department of Pathophysiology, College of High-Altitude Military Medicine, Army Medical University, Chongqing, China
| | - Xingxing Su
- Hepatological Surgery Department, Southwest Hospital, Army Medical University, Chongqing, China
| | - Mengjie Zhang
- Department of Pathophysiology, College of High-Altitude Military Medicine, Army Medical University, Chongqing, China
| | - Enchuan Kang
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Yi Tian
- Institute of Immunology, People's Liberation Army (PLA), and Department of Immunology, College of Basic Medicine, Army Medical University, Chongqing, China
| | - Bing Ni
- Department of Pathophysiology, College of High-Altitude Military Medicine, Army Medical University, Chongqing, China
| | - Wei He
- Reproductive Medical Center, Southwest Hospital, Army Medical University, Chongqing, China.
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