In addition, miR-NC transfected HBMSCs decreased the expression levels of IGF1R in tumor tissues compared with that in PBS group (p < 0.05), and miR-99b-5p mimics transfected HBMSCs further reduced the expression levels of IGF1R compared with miR-NC transfected HBMSCs (p < 0.05, Figure 6e). Here, IGF1R is linked to neoplasm.