Figure 3. Knockdown of HMGA1 in MDA-MB-231 breast cancer cells impairs tumorigenesis and metastasis in immunodeficient mice.
A) Primary tumor size in immunodeficient mice injected with control or HMGA1-silenced (HMGA1-) MDA-MB-231 breast cancer cells; values shown are means ± SD; n = 10. B) Histological analysis shows extensive metastases in the lungs of mice injected with control cells, and only small metastases or intravascular neoplastic emboli in the lungs of animals injected with HMGA1-silenced cells; two representative mice from each cohort, and two magnifications for each slide are shown. C) Representative lymph node from one mouse injected with control cells; the lymph node is expanded and largely effaced by neoplastic cells.