PIMREG（也称为FAM64A）是一个与细胞周期调控相关的基因，属于PIM（Proviral Integration site for Moloney murine leukemia virus）激酶调控基因家族。该基因编码的蛋白质主要参与细胞增殖和分裂过程，尤其在G1/S期转换中发挥重要作用。PIMREG的表达水平在多种癌症中异常升高，如乳腺癌、肺癌和结直肠癌，表明它可能与肿瘤发生和发展密切相关。PIMREG蛋白通过与细胞周期蛋白依赖性激酶（CDK）复合物相互作用，促进细胞周期进程，其过表达可能导致细胞增殖失控，进而促进肿瘤形成。相反，降低PIMREG表达可能抑制肿瘤细胞生长，使其成为潜在的癌症治疗靶点。PIMREG的突变可能影响其与CDK复合物的结合能力，导致细胞周期调控紊乱，进而引发基因组不稳定性和癌症风险增加。此外，PIMREG在免疫系统中也有一定作用，可能参与T细胞活化和增殖过程。PIMREG属于FAM64基因家族，该家族成员通常含有保守的蛋白结构域，参与细胞周期调控和转录调控。家族成员在功能上具有相似性，主要通过与细胞周期相关蛋白相互作用来影响细胞增殖和分化。PIMREG的异常表达不仅影响自身功能，还可能干扰其他细胞周期调控基因（如CDKN1A和CCND1）的表达，进一步加剧细胞周期失调。研究表明，PIMREG的高表达与患者预后不良相关，可能作为癌症诊断和预后的生物标志物。未来研究可探索针对PIMREG的靶向治疗策略，以抑制其在癌症中的促增殖作用。

PIMREG, also known as FAM64A, is a gene encoding a protein that functions as a critical regulator of cell cycle progression, particularly at the G1/S transition, and is a member of the FAM64 gene family, which is characterized by conserved protein domains involved in modulating cell proliferation and transcriptional regulation. The PIMREG protein exerts its effects by interacting with cyclin-dependent kinase (CDK) complexes, thereby facilitating the advancement of the cell cycle; however, its dysregulated overexpression, frequently observed in malignancies such as breast, lung, and colorectal cancers, can drive uncontrolled cellular proliferation and contribute to tumorigenesis. Beyond direct interaction with CDKs, PIMREG influences the broader cell cycle regulatory network by altering the expression of key genes such as CDKN1A and CCND1, which can exacerbate cell cycle disorders and genomic instability, particularly when mutations impair its binding capabilities. Although primarily associated with cancer pathogenesis, PIMREG also plays a role in the immune system, potentially contributing to T-cell activation and proliferation. Given that high expression levels of PIMREG are correlated with poor patient prognosis, it holds significant potential as a biomarker for cancer diagnosis and prognostication, while its role as a promoter of proliferation makes it an attractive target for future therapeutic strategies aimed at inhibiting tumor growth.

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