Abstract

Sentrin specific-protease 1 (SENP1) is a protein involved in deSUMOylation that is almost overexpressed in cancer. SENP1 has a determinative role in the activation of transcription programs in the innate immune responses and the development B of and C lymphocytes. We found, SENP1 possibly plays a critical role in immune infiltration and acts as an expression marker in PAAD, ESCA, and THYM. CD4+ T cells, CD8+ T cells, and macrophages were more key-related immune cells, indicating that SENP1 might be introduced as a potential target for cancer immunotherapy. We further showed that dysregulation of SENP1 is powerfully associated with decreased patient survival and clinical stage. Total SENP1 protein also increases in cancer. SENP1 is also controlled by transcription factors (TFs) CREB1, KDM5A, REST, and YY1 that regulates apoptosis, cell cycle, cell proliferation, invasion, tumorigenesis, and metastasis. These TFs were in a positive correlation with SENP1. MiR-138–5p, miR-129-1-3p, and miR-129-2-3p also inhibit tumorigenesis through targeting of SENP1. The SENP1 expression level positively correlated with the expression levels of UBN1, SP3, SAP130, NUP98, NUP153 in 32 tumor types. SENP1 and correlated and binding genes: SAP130, NUP98, and NUP153 activated cell cycle. Consistent with this finding, drug analysis was indicated SENP1 is sensitive to cell cycle, apoptosis, and RTK signaling regulators. In the end, SENP1 and its expression-correlated and functional binding genes were enriched in cell cycle, apoptosis, cellular response to DNA damage stimulus. We found that the cell cycle is the main way for tumorigenesis by SENP1. SENP1 attenuates the effect of inhibitory drugs on the cell cycle. We also introduced effective FDA-Approved drugs that can inhibit SENP1. Therefore in the treatments in which these drugs are used, SENP1 inhibition is a suitable approach. This study supplies a wide analysis of the SENP1 across The Cancer Genome Atlas (CGA) cancer types. These results suggest the potential roles of SENP1 as a biomarker for cancer. Since these drugs and the drugs that cause to resistance are applied to cancer treatment, then these two class drugs can use to inhibition of SENP1.

Highlights

  • There are seven sentrin specific-protease (SENP) isoforms that operate with SUMO 1–3 (SENP one to three and 5–8)

  • SENP1 was upregulated in pancreatic ductal adenocarcinoma (PAAD) tissues compared with adjacent normal tissues

  • DeSUMOylation of HIF1-α by SENP1 under conditions of hypoxia is needed for the stabilization of HIF1-α and the expression of HIF1-α target genes

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Summary

Introduction

There are seven sentrin specific-protease (SENP) isoforms that operate with SUMO 1–3 (SENP one to three and 5–8). SENP1 (NM_001267594.2 for mRNA or NP_001254523.1 for protein) contains the C-terminal domain that shows catalytic activity and the N-terminal domain that regulates cell localization and substrate specificity. SENP1 enhances the transcriptional activity of AR, eases c-Jun dependent transcription, and induces expression of the cell cycle regulator (Cyclin D1) (Bawa-Khalfe and Yeh, 2010). The overall dynamics of SUMOylation/deSUMOylation may be changed by cell growth, cell cycle conditions, and disease state and SENP proteins might have an important role in cancer growth and be an appropriate target for cancer treatment and therapy. Prostate cancer cell growth could be induced, because HIF1α activation and stabilization by SENP1 results in promoted Cyclin D1 and VEGF levels, angiogenesis, and cell growth (Cheng et al, 2006). Increased expression of SENP1 has been reported in thyroid adenomas (Jacques et al, 2005). These studies suggest SENP1 has a main role in carcinogenesis

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