CERS6,也称为Ceramide synthase 6,是一种重要的酶,在鞘脂类生物合成中发挥关键作用。鞘脂类是一类生物活性分子,在多种细胞类型中传递信号并表现出多种物理特性。CERS6通过催化长链脂肪酸与鞘氨醇的缩合反应,生成不同的鞘脂类分子,如鞘氨醇-1-磷酸(S1P)和鞘氨醇。这些鞘脂类分子在细胞信号传导、细胞凋亡、细胞生长和分化等生物学过程中发挥重要作用。
CERS6的表达和功能在多种疾病中发挥重要作用,包括癌症、炎症性疾病和代谢性疾病。例如,在非小细胞肺癌(NSCLC)中,CERS6的表达水平升高与不良预后和淋巴结转移相关[2]。在酒精性肝病(ALD)中,CERS6的表达水平升高与肝脏脂肪变性和胰岛素抵抗相关[3]。此外,CERS6的表达水平还与结直肠癌、宫颈癌和胰腺癌等癌症的发生和发展相关[4,5,6,7]。
除了CERS6本身的功能外,其反义RNA CERS6-AS1在癌症中也发挥着重要作用。CERS6-AS1是一种长非编码RNA(lncRNA),在多种癌症中表达上调,并与不良预后相关[1,4,5,6,7]。CERS6-AS1通过竞争性结合miRNA,如miR-6838-5p、miR-195-5p和miR-16-5p,调控下游基因的表达,从而影响癌症细胞的增殖、侵袭、凋亡和迁移等恶性生物学行为。
综上所述,CERS6和CERS6-AS1在多种疾病中发挥重要作用,包括癌症、炎症性疾病和代谢性疾病。CERS6通过催化鞘脂类生物合成,影响细胞信号传导、细胞凋亡、细胞生长和分化等生物学过程。CERS6-AS1通过竞争性结合miRNA,调控下游基因的表达,从而影响癌症细胞的恶性生物学行为。深入研究CERS6和CERS6-AS1的生物学功能和调控机制,有助于揭示疾病的发生和发展机制,为疾病的治疗和预防提供新的思路和策略。
参考文献:
1. Rastad, Hadith, Samimisedeh, Parham, Alan, Mahin Seifi, Hashemnejad, Maryam, Alan, Mahnaz Seifi. 2022. The role of lncRNA CERS6-AS1 in cancer and its molecular mechanisms: A systematic review and meta-analysis. In Pathology, research and practice, 241, 154245. doi:10.1016/j.prp.2022.154245. https://pubmed.ncbi.nlm.nih.gov/36580796/
2. Suzuki, Motoshi, Cao, Ke, Kato, Seiichi, Tomida, Shuta, Takahashi, Takashi. 2020. CERS6 required for cell migration and metastasis in lung cancer. In Journal of cellular and molecular medicine, 24, 11949-11959. doi:10.1111/jcmm.15817. https://pubmed.ncbi.nlm.nih.gov/32902157/
3. Jeon, Sookyoung, Scorletti, Eleonora, Dempsey, Joseph, Bataller, Ramon, Carr, Rotonya M. 2023. Ceramide synthase 6 (CerS6) is upregulated in alcohol-associated liver disease and exhibits sex-based differences in the regulation of energy homeostasis and lipid droplet accumulation. In Molecular metabolism, 78, 101804. doi:10.1016/j.molmet.2023.101804. https://pubmed.ncbi.nlm.nih.gov/37714377/
4. Yan, Kun, Hu, Chunyan, Liu, Chen, Ma, Shuyun, Li, Long. 2022. LncRNA CERS6-AS1, sponging miR-6838-5p, promotes proliferation and invasion in cervical carcinoma cells by upregulating FOXP2. In Histology and histopathology, 38, 823-835. doi:10.14670/HH-18-555. https://pubmed.ncbi.nlm.nih.gov/36444938/
5. Xiong, Shiyi, Song, Han. . LncRNA CERS6-AS1 Is a Tumor Promoter in Cervical Cancer by Sponging miR-195-5p. In Annals of clinical and laboratory science, 53, 30-41. doi:. https://pubmed.ncbi.nlm.nih.gov/36889776/
6. Yu, Juan, Chen, Xiaoguang, Li, Jing, Wang, Furang. 2023. CERS6 antisense RNA 1 promotes colon cancer via upregulating mitochondrial calcium uniporter. In European journal of clinical investigation, 53, e13951. doi:10.1111/eci.13951. https://pubmed.ncbi.nlm.nih.gov/36628448/
7. Jindal, Udita, Mamgain, Mukesh, Nath, Uttam Kumar, Datta, Dipak, Jain, Neeraj. 2024. Targeting CERS6-AS1/FGFR1 axis as synthetic vulnerability to constrain stromal cells supported proliferation in Mantle cell lymphoma. In Leukemia, 38, 2196-2209. doi:10.1038/s41375-024-02344-1. https://pubmed.ncbi.nlm.nih.gov/39003397/