Rab3il1, also known as GRAB (guanine nucleotide exchange factor for Rab3A; RAB3A interacting protein (rabin3)-like 1), acts as a guanine nucleotide exchange factor (GEF) for Rab3a, Rab8a, and Rab8b, and is a binding partner for Rab11a and Rab11b [3]. It is involved in multiple intracellular trafficking processes, which are crucial for various cellular functions. These pathways include the regulation of transferrin receptor recycling and iron uptake during erythropoiesis [5], and the control of lysosome exocytosis [6].

In congenital diaphragmatic hernia (CDH) patients, Rab3il1 was among the differentially regulated genes, suggesting its potential involvement in angiogenesis related to CDH etiology [1]. In unstable atherosclerotic plaque research, Rab3il1 was identified as a hub gene, potentially providing new targets for diagnosis and therapy [2]. In hepatocellular carcinoma, Rab3il1 was one of the 9 mRNAs identified as a prognostic indicator, and its inclusion in a genomic-clinicopathologic nomogram improved the prediction of patient mortality [4].

In conclusion, Rab3il1 is a significant gene involved in intracellular trafficking-related functions. Its role in diseases such as CDH, unstable atherosclerotic plaque, and hepatocellular carcinoma, as revealed through various studies, highlights its importance in understanding disease mechanisms. These findings from disease-related research contribute to potentially developing new diagnostic and therapeutic strategies for these conditions.

References:

1. Gürünlüoğlu, Kubilay, Dündar, Muhammed, Unver, Turgay, Demircan, Mehmet, Koc, Ahmet. 2022. Global gene expression profiling in congenital diaphragmatic hernia (CDH) patients. In Functional & integrative genomics, 22, 359-369. doi:10.1007/s10142-022-00837-9. https://pubmed.ncbi.nlm.nih.gov/35260975/

2. Zhang, Rui, Ji, Zhenjun, Yao, Yuyu, Ma, Genshan, Li, Yongjun. 2020. Identification of hub genes in unstable atherosclerotic plaque by conjoint analysis of bioinformatics. In Life sciences, 262, 118517. doi:10.1016/j.lfs.2020.118517. https://pubmed.ncbi.nlm.nih.gov/33011223/

3. Horgan, Conor P, Hanscom, Sara R, McCaffrey, Mary W. 2013. GRAB is a binding partner for the Rab11a and Rab11b GTPases. In Biochemical and biophysical research communications, 441, 214-9. doi:10.1016/j.bbrc.2013.10.043. https://pubmed.ncbi.nlm.nih.gov/24140058/

4. Ni, Fu-Biao, Lin, Zhuo, Fan, Xu-Hui, Wang, Xiao-Dong, Chen, Rui-Cong. 2020. A novel genomic-clinicopathologic nomogram to improve prognosis prediction of hepatocellular carcinoma. In Clinica chimica acta; international journal of clinical chemistry, 504, 88-97. doi:10.1016/j.cca.2020.02.001. https://pubmed.ncbi.nlm.nih.gov/32032609/

5. Chen, Mengying, Zhang, Yuhan, Jiang, Kailun, Shi, Jiahai, Chen, Caiyong. . Grab regulates transferrin receptor recycling and iron uptake in developing erythroblasts. In Blood, 140, 1145-1155. doi:10.1182/blood.2021015189. https://pubmed.ncbi.nlm.nih.gov/35820059/

6. Escrevente, Cristina, Bento-Lopes, Liliana, Ramalho, José S, Barral, Duarte C. 2021. Rab11 is required for lysosome exocytosis through the interaction with Rab3a, Sec15 and GRAB. In Journal of cell science, 134, . doi:10.1242/jcs.246694. https://pubmed.ncbi.nlm.nih.gov/34100549/