The animal studies were approved by the Medical Ethics Committee of Hunan Cancer Hospital (KYJJ-2020-049). Four-week-old BALB/C nude mice purchased from Hunan SJA Laboratory Animal Co., Ltd., were used to establish a xenograft model. SMMC-7721 cells (3 × 106 cells/100 μL per mouse) transfected with miR-10b-5p mimics or NC mimics (GenePharma, China) were subcutaneously injected into the axillae of the anterior left limb of the mice.36 (link) The tumor volumes were measured twice per week. Thirty-five days later, the mice were sacrificed, and tumors were harvested for weighing, imaging, and further detection.