Spatially targeting of tumor-associated macrophages and cancer cells for suppression of spontaneously metastatic tumor was written by Zhou, Minglu;Xie, Dandan;Zhou, Zhou;Li, Lian;Huang, Yuan. And the article was included in Nano Research in 2022.Safety of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one The following contents are mentioned in the article:
The interaction between cancer cells and M2 tumor-associated macrophages (M2-TAMs) facilitates tumor growth and metastasis. However, cancer cells and M2-TAMs have different spatial distribution patterns, which requires distinct drug delivery strategies. Herein, based on different tumor-penetrating ability of nanocarriers, we developed a combinatory strategy that consists of a TAMs-targeting liposome (alanine-alanine-asparagine (AAN)-Lip-regorafenib (Rego)) and a cancer cells-targeting copolymer (internalizing RGD modified with N-(2-hydroxypropyl) methacrylamide-doxorubicin (iRGD-HD)). Our study confirmed AAN-Lip-Rego accumulated at perivascular sites where M2-TAM is located, while iRGD-HD penetrated into deep site of tumor to enter cancer cells. Thereafter, we found iRGD-HD induced cancer cells undergoing immunogenic cell death to enhance tumor infiltration of CD8+ T cells. Meanwhile, AAN-Lip-Rego efficiently repolarized TAMs from M2 into M1 to alleviate tumor immunosuppression, thus reviving CD8+ T cells. Moreover, the repolarization of TAMs led to dramatic downregulation of prometastatic factors expressed on cancer cells. As a result, such combinatory approach elicited robust antitumor immune responses and generated considerable anti-tumor and anti-metastasis efficacy to markedly inhibit primary tumor and spontaneous lung metastasis. This study involved multiple reactions and reactants, such as 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0Safety of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one).
3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0) belongs to thiazole derivatives. Thiazoles frequently appear in peptide studies. Thiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis. The nitrogen in thiazole is sp2 hybridized and the lone pair of electrons localized on the nitrogen is less reactive due to increased aromatic character and decreased basicity. It is protonated and alkylated/acylated at nitrogen forming hydrochloride and quaternary thiazolium salt.Safety of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica