TANs mediate obesity-induced tumor progression and aggravated desmoplasia. TANs mediate obesity-induced tumor progression and aggravated desmoplasia. A,

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TANs mediate obesity-induced tumor progression and aggravated desmoplasia. TANs mediate obesity-induced tumor progression and aggravated desmoplasia. A, effect of obesity on immune cell infiltration in PDACs. Obesity promoted infiltration of myeloid CD11b+Gr1+F4/80− cell population in PAN02 tumors in obese mice. Quantification normalized by total viable cells (i) or total CD45 leukocytes (ii; n = 4–6 tumors/group). B, effect of TAN-D on PDAC growth in obese mice. TAN-D from day 1 using anti–Ly6G-specific pharmacologic inhibitory antibody in obese mice significantly reverted the obesity-increased tumor weight in PAN02 and AK4.4 models (n = 4–6 tumors/group). C, preferential accumulation of TANs in areas with activated PSCs. Scale bars, 1 mm (whole tumors) and 100 μm (inset). D, TAN-D decreased activated PSCs in obese PDACs to the level of lean tumors. Representative pictures (i) and quantification of αSMA+Col-I+ double-positive cells (ii; n = 4–6 tumors/group). E, TAN-D reduced AT1 expression, collagen production, and MMP9 expression in PAN02 tumors in obese animals. Representative Western blots (i) and quantification (ii) are shown. F, TAN-D led to increasing in perfusion in PAN02 tumors in obese animals. Percentage of CD31+, lectin+, or double-positive vessel density in the viable area of whole tumors (n = 4–6 tumors/group). Data are shown as mean ± SEM. P values were determined by the Student t test, or one-way ANOVA for C and E. *, P < 0.05; **, P < 0.01; *** P < 0.001. Joao Incio et al. Cancer Discov 2016;6:852-869 ©2016 by American Association for Cancer Research