What could be the molecular mechanisms of aspirin as anti-cancer agent?

Daily aspirin intake has been recently shown to be beneficial to treat cancers and lower the risk of cancers development. Nevertheless, aspirin can also cause hemorrhages and, in some specific clinical cases, should not be recommended. The molecular mechanisms involved in anti-cancer action of this compound are not elucided and it will be great to associate effects of aspirin with other potential anti-cancer effects of AINS and anti-coagulants (e.g. Heparin) to consider aspirin really as the promising anti-cancer drug of its category. Further, establishment of new formulations for aspirin to lower adverse effects of thic compound will be an important step