Mutant KRAS triggers functional reprogramming of tumor-associated macrophages in colorectal cancer.
Mutant KRAS triggers functional reprogramming of tumor-associated macrophages in colorectal cancer.
复制标题
突变的 KRAS 触发结直肠癌中肿瘤相关巨噬细胞的功能重编程
DOI:
10.1038/s41392-021-00534-2
复制
发表时间:
2021-04-09
影响因子:
39.3
通讯作者:
Lan P
中科院分区:
文献类型:
--
作者:
Liu H;Liang Z;Zhou C;Zeng Z;Wang F;Hu T;He X;Wu X;Wu X;Lan P
Oncogenic KRAS has been previously identified to act in a cell-intrinsic manner to modulate multiple biological functions of colorectal cancer (CRC). Here, we demonstrate a cell-extrinsic role of KRAS, where KRAS engages with the tumor microenvironment by functional reprogramming of tumor-associated macrophages (TAMs). In human CRC specimens, mutant KRAS positively correlates with the presence of TAMs. Mutationally activated KRAS in tumor cells reprograms macrophages to a TAM-like phenotype via a combination effect of tumor-derived CSF2 and lactate. In turn, KRAS-reprogrammed macrophages were shown to not only promote tumor progression but also induce the resistance of tumor cells to cetuximab therapy. Mechanistically, KRAS drives the production of CSF2 and lactate in tumor cells by stabilizing hypoxia-inducible factor-1α (HIF-1α), a transcription factor that controls the expression of CSF2 and glycolytic genes. Mutant KRAS increased the production of reactive oxygen species, an inhibitor of prolyl hydroxylase activity which decreases HIF-1α hydroxylation, leading to enhanced HIF-1α stabilization. This cell-extrinsic mechanism awards KRAS a critical role in engineering a permissive microenvironment to promote tumor malignancy, and may present new insights on potential therapeutic defense strategies against mutant KRAS tumors.
登录
查看更多内容
影响因子:
12.8
作者:
Hong IS
通讯作者:
Hong IS
影响因子:
16.6
作者:
Chen C;He W;Huang J;Wang B;Li H;Cai Q;Su F;Bi J;Liu H;Zhang B;Jiang N;Zhong G;Zhao Y;Dong W;Lin T
通讯作者:
Lin T
影响因子:
120.1
作者:
Cox, Adrienne D.;Fesik, Stephen W.;Kimmelman, Alec C.;Luo, Ji;Der, Channing J.
通讯作者:
Der, Channing J.
影响因子:
64.8
作者:
Colegio, Oscar R.;Ngoc-Quynh Chu;Szabo, Alison L.;Chu, Thach;Rhebergen, Anne Marie;Jairam, Vikram;Cyrus, Nika;Brokowski, Carolyn E.;Eisenbarth, Stephanie C.;Phillips, Gillian M.;Cline, Gary W.;Phillips, Andrew J.;Medzhitov, Ruslan
通讯作者:
Medzhitov, Ruslan
影响因子:
4
作者:
Gutschalk, Claudia M.;Yanamandra, Archana K.;Linde, Nina;Meides, Alice;Depner, Sofia;Mueller, Margareta M.
通讯作者:
Mueller, Margareta M.