Open AccessTargeting aurora kinases limits tumour growth through DNA damage‐mediated senescence and blockade of NF‐κB impairs this drug‐induced senescence
Author(s) -
Liu Yan,
Hawkins Oriana E.,
Su Yingjun,
Vilgelm Anna E.,
Sobolik Tammy,
Thu YeeMon,
Kantrow Sara,
Splittgerber Ryan C.,
Short Sarah,
Amiri Katayoun I.,
Ecsedy Jeffery A.,
Sosman Jeffery A.,
Kelley Mark C.,
Richmond Ann
Publication year - 2013
Publication title -
embo molecular medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.923
H-Index - 107
eISSN - 1757-4684
pISSN - 1757-4676
DOI - 10.1002/emmm.201201378
Subject(s) - senescence , cancer research , dna damage , biology , kinase , melanoma , nf κb , microbiology and biotechnology , immunology , signal transduction , genetics , dna
Oncogene‐induced senescence can provide a protective mechanism against tumour progression. However, production of cytokines and growth factors by senescent cells may contribute to tumour development. Thus, it is unclear whether induction of senescence represents a viable therapeutic approach. Here, using a mouse model with orthotopic implantation of metastatic melanoma tumours taken from 19 patients, we observed that targeting aurora kinases with MLN8054/MLN8237 impaired mitosis, induced senescence and markedly blocked proliferation in patient tumour implants. Importantly, when a subset of tumour‐bearing mice were monitored for tumour progression after pausing MLN8054 treatment, 50% of the tumours did not progress over a 12‐month period. Mechanistic analyses revealed that inhibition of aurora kinases induced polyploidy and the ATM/Chk2 DNA damage response, which mediated senescence and a NF‐κB‐related, senescence‐associated secretory phenotype (SASP). Blockade of IKKβ/NF‐κB led to reversal of MLN8237‐induced senescence and SASP. Results demonstrate that removal of senescent tumour cells by infiltrating myeloid cells is crucial for inhibition of tumour re‐growth. Altogether, these data demonstrate that induction of senescence, coupled with immune surveillance, can limit melanoma growth.