Fatty Acid Binding Protein 5 (FABP5) Promotes Aggressiveness of Gastric Cancer Through Modulation of Tumor Immunity.

IF 3.2 4区 医学 Q2 GASTROENTEROLOGY & HEPATOLOGY
Mei-Qing Qiu, Hui-Jun Wang, Ya-Fei Ju, Li Sun, Zhen Liu, Tao Wang, Shi-Feng Kan, Zhen Yang, Ya-Yun Cui, You-Qiang Ke, Hong-Min He, Shu Zhang
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Abstract

Purpose: Gastric cancer (GC) is the second most lethal cancer globally and is associated with poor prognosis. Fatty acid-binding proteins (FABPs) can regulate biological properties of carcinoma cells. FABP5 is overexpressed in many types of cancers; however, the role and mechanisms of action of FABP5 in GC remain unclear. In this study, we aimed to evaluate the clinical and biological functions of FABP5 in GC.

Materials and methods: We assessed FABP5 expression using immunohistochemical analysis in 79 patients with GC and evaluated its biological functions following in vitro and in vivo ectopic expression. FABP5 targets relevant to GC progression were determined using RNA sequencing (RNA-seq).

Results: Elevated FABP5 expression was closely associated with poor outcomes, and ectopic expression of FABP5 promoted proliferation, invasion, migration, and carcinogenicity of GC cells, thus suggesting its potential tumor-promoting role in GC. Additionally, RNA-seq analysis indicated that FABP5 activates immune-related pathways, including cytokine-cytokine receptor interaction pathways, interleukin-17 signaling, and tumor necrosis factor signaling, suggesting an important rationale for the possible development of therapies that combine FABP5-targeted drugs with immunotherapeutics.

Conclusions: These findings highlight the biological mechanisms and clinical implications of FABP5 in GC and suggest its potential as an adverse prognostic factor and/or therapeutic target.

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脂肪酸结合蛋白5 (FABP5)通过调节肿瘤免疫促进胃癌侵袭性。
目的:胃癌(GC)是全球第二大致死率最高的癌症,且预后较差。脂肪酸结合蛋白(Fatty acid binding protein, FABPs)能够调控癌细胞的生物学特性。FABP5在许多类型的癌症中过表达;然而,FABP5在胃癌中的作用和作用机制尚不清楚。在本研究中,我们旨在评估FABP5在胃癌中的临床和生物学功能。材料和方法:我们利用免疫组织化学方法对79例胃癌患者FABP5的表达进行了评估,并对其体外和体内异位表达后的生物学功能进行了评估。使用RNA测序(RNA-seq)确定与GC进展相关的FABP5靶点。结果:FABP5表达升高与胃癌预后不良密切相关,其异位表达促进胃癌细胞的增殖、侵袭、迁移和致癌性,提示其在胃癌中可能具有促瘤作用。此外,RNA-seq分析表明,FABP5激活免疫相关途径,包括细胞因子-细胞因子受体相互作用途径、白细胞介素-17信号传导和肿瘤坏死因子信号传导,这为将FABP5靶向药物与免疫疗法联合开发治疗方法提供了重要的理论依据。结论:这些发现突出了FABP5在胃癌中的生物学机制和临床意义,并提示其可能作为不良预后因素和/或治疗靶点。
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来源期刊
Journal of Gastric Cancer
Journal of Gastric Cancer Biochemistry, Genetics and Molecular Biology-Cancer Research
CiteScore
4.30
自引率
12.00%
发文量
36
期刊介绍: The Journal of Gastric Cancer (J Gastric Cancer) is an international peer-reviewed journal. Each issue carries high quality clinical and translational researches on gastric neoplasms. Editorial Board of J Gastric Cancer publishes original articles on pathophysiology, molecular oncology, diagnosis, treatment, and prevention of gastric cancer as well as articles on dietary control and improving the quality of life for gastric cancer patients. J Gastric Cancer includes case reports, review articles, how I do it articles, editorials, and letters to the editor.
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