<p>Natural killer/T-cell lymphoma (NKTCL) is a malignancy with a poor prognosis. The Smoothened (Smo) protein is implicated in NKTCL growth. This study employed lentiviral vector-mediated <i>Smo</i> RNA interference (LV-<i>Smo</i>-RNAi) to silence the <i>Smo</i> gene in the human NKTCL cell line SNT8. Fluorescence microscopy, qRT-PCR, and Western blot verified the reduction of <i>Smo</i> mRNA and protein levels. The CCK-8 assay showed that <i>Smo</i> silencing inhibited cell proliferation. Flow cytometry with annexin V-PE/7-AAD double staining indicated an increased apoptosis rate. Moreover, the expression of GLI family zinc finger 1 (Gli1) and programmed death-ligand 1 (PD-L1) was downregulated. In vivo, xenotransplantation experiments demonstrated that <i>Smo</i> silencing led to slower tumor growth with reduced tumor volume and weight. Overall, <i>Smo</i> gene silencing holds great potential as a novel molecular-targeted therapy approach for NKTCL by effectively suppressing cell proliferation and promoting apoptosis.</p>

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Smo gene silencing: a promising strategy for natural killer/t-cell lymphoma treatment via modulating proliferation and apoptosis

  • Shengquan Liu,
  • Shaoxiong Wang,
  • Yahong Xu,
  • Yuanling Huang,
  • Pengliang Xin,
  • Yan Zheng,
  • Yishen Wu,
  • Yanling Yang,
  • Xiongpeng Zhu,
  • Chuntuan Li

摘要

Natural killer/T-cell lymphoma (NKTCL) is a malignancy with a poor prognosis. The Smoothened (Smo) protein is implicated in NKTCL growth. This study employed lentiviral vector-mediated Smo RNA interference (LV-Smo-RNAi) to silence the Smo gene in the human NKTCL cell line SNT8. Fluorescence microscopy, qRT-PCR, and Western blot verified the reduction of Smo mRNA and protein levels. The CCK-8 assay showed that Smo silencing inhibited cell proliferation. Flow cytometry with annexin V-PE/7-AAD double staining indicated an increased apoptosis rate. Moreover, the expression of GLI family zinc finger 1 (Gli1) and programmed death-ligand 1 (PD-L1) was downregulated. In vivo, xenotransplantation experiments demonstrated that Smo silencing led to slower tumor growth with reduced tumor volume and weight. Overall, Smo gene silencing holds great potential as a novel molecular-targeted therapy approach for NKTCL by effectively suppressing cell proliferation and promoting apoptosis.