Abstract
Background
Colorectal cancer (CRC) is a malignant tumor of the gastrointestinal tract with high morbidity and mortality. There is growing evidence that GRK2 plays a key role in the development and progression of several human cancers. However, the role and potential mechanisms of GRK2 in colon cancer (COAD) are unclear.
Methods
The expression data of GRK2 was downloaded from The Cancer Genome Atlas database (TCGA). Variation in GRK2 was explored based on the cBioPortal database. The TIMER and TISCH2 databases were used to analyse the relationship between GRK2 expression and tumor immune microenvironment (TME). A log-rank test was used to compare the prognosis of high and low expression of GRK2 groups. Detecting the effect of GRK2 on cell cycle and apoptosis induced by 5-Fluorouracil (5-FU) through the flow cytometry and detection of apoptosis-related molecules by Western blot.
Results
We demonstrated that GRK2 has a potential oncogenic role. GRK2 expression was upregulated in COAD, which predicted poorer overall survival in COAD patients. The cellular assays showed that GRK2 plays a role in the growth and proliferation of colon cancer cells, also the expression of GRK2 have relationship with the sensitivity of 5-FU and cell cycle progression.
Conclusions
Our results suggest that high GRK2 expression is closely associated with the development of tumor and affects the 5-FU sensitivity.
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Data availability
The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding authors. All the data contained in the article are true and reliable. The original data of RNA-seq has been uploaded to NCBI’s SRA database, which can be queried according to the number PRJNA904417.
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Funding
This work was supported by the Fundamental Research Funds for the Basic Ability Improvement Project for Young and Middle-Aged Teachers in Guangxi Colleges and Universities (Grant No. 2022KY0532), Youjiang Medical University for Nationalities Scientific Research Project (Grant No. yy2020ky039), and the Scientific Research and Technology Development Plan of Baise (Grant No. 20212347).Guangxi Natural Science Foundation (2023GXNSFAA140064).
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Meng Gao and Xinyi Liang conceived and designed the study. Mingyou Dong searched for data and wrote programming code. Meng Gao was involved in the writing of the manuscript. Yutong Wu collected pictures and graphs as well as edited them. Mengqi Fan was responsible for the collection and assembly of data, data analysis. Runlei Du provided help in revising the manuscript. All authors listed have made a substantial, direct, and intellectual contribution to the work and approved it for publication.
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Gao, M., Liang, X., Fan, M. et al. Exploring the potential biological function of GRK2 in colorectal cancer. Funct Integr Genomics 24, 51 (2024). https://doi.org/10.1007/s10142-024-01322-1
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DOI: https://doi.org/10.1007/s10142-024-01322-1