Journal: Acta pharmaceutica Sinica. B
Article Title: CCL9/CCR1 axis-driven chemotactic nanovesicles for attenuating metastasis of SMAD4-deficient colorectal cancer by trapping TGF- β .
doi: 10.1016/j.apsb.2024.05.009
Figure Lengend Snippet: Figure 5 C/T-NVs attenuate liver metastasis of SMAD4-deficient CRC. (A) MC38-Luc cells were injected into the spleens of C57BL/6 mice. Mice received 5E11 count of indicated NVs and HBSS vehicle (i.v.), respectively. In vivo bioluminescence images of MC38-Luc metastases in indicated groups at indicated time point and (B) quantification of liver photon flux of each mouse, n Z 4. (C) MC38 cells were injected into the spleens of C57BL/6 mice. Mice received 5E11 count of indicated NVs and HBSS vehicle (i.v.), respectively. Mice were reared for 14 days and sacrificed for analysis of liver metastasis, n Z 4. (D) Quantification of the liver weight, n Z 4. (E) Overall survival time of mice in indicated groups, n Z 12. (F) Quantification of CCL9 concentration in tumors with indicated NVs treatment, n Z 3. (G) FACS analysis and quantification of the percent of MDSCs in CD11bþ, (H) G-MDSCs in MDSCs in metastatic tumors, respectively, n Z 3. (I) Representative FACS plots of G and H. (J) Quantification of TGF-b1 concentration in tumors with indicated NVs treatment, n Z 3. (K) FACS analysis and quantification of the percent of CD3þ in live cells in liver metastasis, n Z 3. (L) Immunohistochemistry staining for TGF-b1 and CD3 of liver metastasis. Inset shows invasion front of liver metastasis. Scale bar Z 100 mm, scale bar for zoom out Z 30 mm. (M) FACS analysis and quantification of the percent of CD69þ and (N) granzyme B (GzmBþ) in CD8þ cells in liver metastasis, respectively, n Z 3. Data are presented as mean SD of at least two independent experiments. Ordinary one-way ANOVA with a Tukey’s multiple comparisons test (D, F, G, H, J, K, M, N) was used for statistical analysis with calculated P values shown.
Article Snippet: Primary antibodies: SMAD4 (Santa Cruz, Cat# sc-7966), CCR1 (Abclonal, Cat# A18341), CCL9 (Santa Cruz, Cat# sc-74228), p-SMAD2 (Absin, Cat# abs155124) and TGF-b1 (Abclonal, Cat# A16640).
Techniques: Injection, In Vivo, Concentration Assay, Immunohistochemistry, Staining