Tnfaip8l1, also known as TIPE1, is a member of the TNFAIP8 gene family. It plays significant roles in various biological processes such as tumorigenesis, autophagy, and mitochondrial regulation [1,3,4]. It may be involved in pathways like "ECM-receptor interaction" based on GO and KEGG analyses [1]. Genetic models help in understanding its functions better.

In a mouse model of diabetic nephropathy, conditional knockout of Tipe1 in renal tubular epithelial cells (RTECs) decreased urine protein creatinine ratio, renal tubular damage, epithelial-mesenchymal transition, and interstitial fibrosis. Tipe1 deficiency also regulated mitochondrial function in RTECs, indicating its role in maintaining mitochondrial homeostasis [2]. In a Parkinson's disease model, OS-induced Tnfaip8l1/Oxi-β increased autophagy by competing with TSC2 to bind FBXW5, thus stabilizing TSC2 and inhibiting mTOR phosphorylation [3].

In conclusion, Tnfaip8l1 is involved in maintaining mitochondrial function and regulating autophagy, which are crucial for normal cellular function. Studies using gene knockout models in diabetes and Parkinson's disease have revealed its potential as a therapeutic target in these disease areas, providing insights into disease mechanisms and possible treatment strategies.

References:

1. Sun, Jinghui, Zhang, Xuezhong, Zhu, Bin, Chen, Yingjun, Wang, Hui. . A pan-cancer analysis of TNFAIP8L1 in human tumors. In Medicine, 102, e36291. doi:10.1097/MD.0000000000036291. https://pubmed.ncbi.nlm.nih.gov/38065896/

2. Liu, Lei, Bai, Fang, Song, Hui, Yang, Xiangdong, Liang, Xiaohong. 2022. Upregulation of TIPE1 in tubular epithelial cell aggravates diabetic nephropathy by disrupting PHB2 mediated mitophagy. In Redox biology, 50, 102260. doi:10.1016/j.redox.2022.102260. https://pubmed.ncbi.nlm.nih.gov/35152003/

3. Ha, Ji-Young, Kim, Ji-Soo, Kang, Young-Hee, Kim, Yoon-Seong, Son, Jin H. 2013. Tnfaip8l1/Oxi-β binds to FBXW5, increasing autophagy through activation of TSC2 in a Parkinson's disease model. In Journal of neurochemistry, , . doi:10.1111/j.1471-4159.2013.12643.x. https://pubmed.ncbi.nlm.nih.gov/24372178/

4. Bordoloi, Devivasha, Banik, Kishore, Shabnam, Bano, Sethi, Gautam, Kunnumakkara, Ajaikumar B. 2018. TIPE Family of Proteins and Its Implications in Different Chronic Diseases. In International journal of molecular sciences, 19, . doi:10.3390/ijms19102974. https://pubmed.ncbi.nlm.nih.gov/30274259/