Prostate cancer is one of the most common malignant tumors in in men worldwide, and the therapeutic effect is not ideal at present. Long non-coding non RNAs (LncRNAs) as the focus of cancer research, previous studies have demonstrated that SPRY4-IT1 is overexpressed in several cancers, which indicates poor prognosis and promotes tumor progress. However, the mechanism of SPRY4-IT1 in prostate cancer remains unknown. Our previous studies indicated that SPRY4-IT1 was overexpressed in prostate cancer tissues and cell lines, and SPRY4-IT1 knockdown inhibited the invasion and migration of prostate cancer cells and promoted anoikis. Preliminary studies have shown that SPRY4-IT1 can directly bind to E-cadherin protein and negatively regulate its expression. This study will further explore the the effect and mechanism of LncRNA SPRY4-IT1 on the metastasis of prostate cancer through EMT-anoikis resistance pathway by directly targeting E-cadherin. The work will elucidate the LncRNA-protein directly interaction role of SPRY4-IT1 in promoting tumor metastasis, and provide a LncRNA-directed therapeutic in prostate cancer.
前列腺癌为男性泌尿系最为常见的恶性肿瘤之一,目前治疗效果不理想。长链非编码RNA(long non-coding RNA,LncRNA)为肿瘤研究热点,既往研究表明SPRY4-IT1在多种肿瘤中高表达,其上调预示着较差的临床预后和更快的肿瘤进展,但其在前列腺癌中的作用机制并未见报道。我们前期研究发现,SPRY4-IT1在前列腺肿瘤组织及细胞系中高表达,下调SPRY4-I T1抑制前列腺癌细胞的侵袭迁移并促进其失巢凋亡。初步研究显示:SPRY4-IT1可与E-cadherin蛋白直接结合,并反向调控其表达水平。本研究拟进一步探索SPRY4-IT1直接结合于E-cadherin蛋白对下游EMT-失巢凋亡耐受通路的调控作用及具体机制。本项目的成功实施,将从LncRNA -蛋白直接作用新的角度阐明SPRY4-IT1促进肿瘤转移的作用机制,并为前列腺癌的治疗提供了一种基于LncRNA导向的治疗靶点。
前列腺癌为男性泌尿系统最为常见的恶性肿瘤之一,目前治疗效果并不理想。长链非编码RNA(long non-coding RNA,LncRNA)为肿瘤研究热点,既往研究表明SPRY4-IT1在多种肿瘤中高表达,其上调预示着较差的临床预后和更快的肿瘤进展,但其在前列腺癌中的作用机制并未见报道。我们的研究发现,SPRY4-IT1在前列腺肿瘤组织及细胞系中高表达,并且其高表达与不良的临床预后相关。信号通路研究发现下调SPRY4-IT1在体外及体内试验中抑制前列腺癌细胞的侵袭迁移并促进其失巢凋亡。进一步的机制研究表明:SPRY4-IT1可与E-cadherin蛋白直接结合,并反向调控其表达水平,从而进一步激活其下游EMT-失巢凋亡耐受通路,促进前列腺癌的局部进展及远处转移。本项目的成功实施,将从LncRNA-蛋白直接作用新的角度阐明SPRY4-IT1促进肿瘤转移的作用机制,并为前列腺癌的治疗提供了一种基于LncRNA导向的治疗靶点。
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数据更新时间:2023-05-31
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