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Elevated expression of sepiapterin reductase, regulator of G protein signaling 1, hypothetical protein CXorf58 homolog, and zinc finger and BTB domain–containing protein 21 isoform X2 is associated with progression of hepatocellular carcinoma

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Abstract

Hepatocellular carcinoma (HCC) is one of the most common cancers associated with high mortality rate. Understanding of events leading to HCC pathophysiology is essential for its better management. We earlier reported development of a novel rodent model by administrating chemical carcinogens, DEN, and 2-AAF for study of HCC at very early stage. 2D-Electrophoresis analysis of total serum proteins identified several differentially expressed proteins in animals undergoing tumorigenesis. MALDI-TOF-MS/MS analyses were performed to characterize the differentially expressed proteins. Further real-time PCR analyses were taken place to quantify the transcript expression for the identified proteins at HCC initiation and tumor stages. Considering protein-protein interactions among the experimentally identified proteins and their interacting neighbors, a protein network has been analyzed that provided further insight into molecular events taking place during HCC development. Histological changes confirmed HCC initiation and hepatotumorigenesis at 1 and 4 months post carcinogen treatment, respectively. Four differentially expressed proteins were identified which were further characterized as regulator of G protein signaling 1 (RGS1), sepiapterin reductase (SPR), similar to zinc finger and BTB domain–containing protein 21 isoform X2 (ZNF295), and a hypothetical protein CXorf58 homolog. Quantification of transcripts for these proteins revealed elevation in their expression both at initiation and tumorigenesis stages. The study deciphers the regulatory role of these proteins during HCC progression.

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Funding

The work was supported by a MRP grant from the University Grant Commission (UGC) to S. K. Jain [Grant # 40-155/2011 (SR)]. M. R. is grateful to ICCR, Govt. of India, for their financial support [Grant # 2-261/2013-14/ISD-II].

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All authors have contributed equally and approved the final manuscript.

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Correspondence to Swatantra Kumar Jain.

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Experiments were conducted following the guidelines of the “Committee for the Purpose of Control and Supervision of Experiments on Animals” (approval number granted by the ethics committee of Jamia Hamdard University is 908/CPCSEA), Government of India. The study was performed in accordance with the ethical standards.

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The authors declare that they have no conflict of interest.

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Ranjpour, M., Wajid, S. & Jain, S.K. Elevated expression of sepiapterin reductase, regulator of G protein signaling 1, hypothetical protein CXorf58 homolog, and zinc finger and BTB domain–containing protein 21 isoform X2 is associated with progression of hepatocellular carcinoma. Protoplasma 258, 1133–1143 (2021). https://doi.org/10.1007/s00709-021-01632-2

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  • DOI: https://doi.org/10.1007/s00709-021-01632-2

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