细胞视黄酸结合蛋白 2(CRABP2),受 HPV E6/E7 上调,导致整合素β1/FAK/ERK 信号通路异常激活,并加重宫颈癌的恶性表型。
Cellular Retinoic Acid Binding Protein 2 (CRABP2), Up-regulated by HPV E6/E7, Leads to Aberrant Activation of the Integrin β1/FAK/ERK Signaling Pathway and Aggravates the Malignant Phenotypes of Cervical Cancer.
机构信息
School of Medical Technology, Taizhou Polytechnic College, Taizhou, Jiangsu, 225300, China.
Harbin Medical University, Immunity and Infection, Pathogenic Biology Key Laboratory, Heilongjiang, 150081, China.
出版信息
Biochem Genet. 2024 Aug;62(4):2686-2701. doi: 10.1007/s10528-023-10568-6. Epub 2023 Nov 24.
The ectopic expression of cellular retinoic acid binding protein 2 (CRABP2) is associated with various tumorigenesis. However, the effects of CRABP2 on the progression of cervical cancer are still unclear. The current study aimed to investigate the role of CRABP2 in the malignant phenotypes of cervical cancer cells. CRABP2 was artificially regulated in CaSki, SiHa, and C-33A cells. CCK-8 assay and flow cytometry were used to assess the cell proliferation and apoptosis abilities, respectively. Wound healing assay and transwell assay were employed to measure the cell migration and invasion abilities, respectively. The results showed that CRABP2 was highly expressed in cervical carcinoma tissues and cell lines, and its high expression was associated with poor overall survival. Knockdown of CRABP2 promoted the cell apoptosis and inhibited cell proliferation, migration, and invasion in cervical carcinoma cells, whereas CRABP2 overexpression exhibited the opposite results. Mechanically, CRABP2 silencing suppressed the Integrin β1/FAK/ERK signaling via HuR. Treatment with siITGB1 or a FAK inhibitor PF-562271 or an ERK inhibitor FR180204 reversed the promoting effects of CRABP2 on cell proliferation, migration, and invasion. Moreover, the overexpression of CRABP2 reverted the HPV16 E6/E7 knockdown-induced inhibition of cell proliferation, migration, and invasion in cervical cancer cells. These results suggested that HPV16 E6/E7 promoted the malignant phenotypes of cervical cancer by upregulating the expression of CRABP2. In conclusion, CRABP2, upregulated by HPV E6/E7, promoted the progression of cervical cancer through activating the Integrin β1/FAK/ERK signaling pathway via HuR.
细胞视黄酸结合蛋白 2(CRABP2)的异位表达与多种肿瘤发生有关。然而,CRABP2 对宫颈癌进展的影响尚不清楚。本研究旨在探讨 CRABP2 在宫颈癌细胞恶性表型中的作用。在 CaSki、SiHa 和 C-33A 细胞中人工调节 CRABP2。CCK-8 assay 和流式细胞术分别用于评估细胞增殖和凋亡能力。伤口愈合 assay 和 Transwell assay 分别用于测量细胞迁移和侵袭能力。结果表明,CRABP2 在宫颈癌组织和细胞系中高表达,其高表达与总生存期不良相关。CRABP2 敲低促进宫颈癌细胞凋亡,抑制细胞增殖、迁移和侵袭,而 CRABP2 过表达则表现出相反的结果。机制上,CRABP2 沉默通过 HuR 抑制整合素β1/FAK/ERK 信号通路。用 siITGB1 或 FAK 抑制剂 PF-562271 或 ERK 抑制剂 FR180204 处理可逆转 CRABP2 对细胞增殖、迁移和侵袭的促进作用。此外,CRABP2 的过表达逆转了 HPV16 E6/E7 敲低对宫颈癌细胞增殖、迁移和侵袭的抑制作用。这些结果表明,HPV16 E6/E7 通过上调 CRABP2 的表达促进宫颈癌的恶性表型。总之,HPV E6/E7 上调的 CRABP2 通过 HuR 激活整合素β1/FAK/ERK 信号通路促进宫颈癌的进展。