{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Conserved Anti‐Apoptotic Protein 1 (CAAP1), encoded by C9orf82, has emerged as a multifaceted regulator of cell death and survival. In gastric cancer cells, CAAP1 is targeted by miR‑5100 and regulated by MKL1, thereby shifting the balance between apoptosis and autophagy—miR‑5100 enhances apoptosis while MKL1 promotes autophagy through CAAP1 modulation."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " Genomic screening in progenitor B‐cell acute lymphoblastic leukemia further identified recurrent alterations in CAAP1 alongside other genes governing differentiation and the CDKN2A tumor‐suppressor pathway."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n Functional studies in lung and breast carcinoma cells have demonstrated that CAAP1 acts as an anti‐apoptotic factor by modulating a caspase‑10–dependent mitochondrial amplification loop involving caspases‑3 and ‑9."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": " Moreover, in models of hypoxic–ischemic injury and ischemic stress, CAAP1 emerges as a target within competing endogenous RNA networks—its expression is regulated by miR‑196 sponged by the long noncoding RNA Snhg3"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": "as well as by miR‑184‑5p in brain endothelial cells."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n Additional in silico analyses have implicated CAAP1 as a target of miR‑371b‑5p in apoptotic pathways"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": ", and investigations in liver cancer cells indicate that CAAP1 contributes to the regulation of proliferation, apoptosis, migration, and invasion."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": " In contrast, a CRISPR/Cas9‐mediated knockout study in mice found that loss of CAAP1 did not significantly affect double‐strand break repair processes or alter sensitivity to DNA damage–induced apoptosis"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "8"}]}, {"type": "t", "text": ", thereby questioning its direct role in these mechanisms. \n "}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n Collectively, these studies underscore the context‐dependent functions of CAAP1 as a conserved anti‐apoptotic protein whose regulation by microRNAs and long noncoding RNAs modulates cellular responses in cancer, hypoxic–ischemic injury, and other stress responses.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Hui-Min Zhang, Hui Li, Gen-Xin Wang, et al. 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