1. Circadian Rhythm Disruption Promotes Lung Tumorigenesis
Thales Papagiannakopoulos, Matthew R. Bauer, Shawn M. Davidson, Megan Heimann, Lakshmipriya Subbaraj, Arjun Bhutkar, Jordan Bartlebaugh, Matthew G. Vander Heiden, Tyler Jacks 
Cell Metabolism 
Volume 24, Issue 2, Pages (August 2016)
DOI: /j.cmet
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2. Cell Metabolism 2016 24, 324-331DOI: (10.1016/j.cmet.2016.07.001)
Copyright © 2016 Elsevier Inc. Terms and Conditions

3. Figure 1
Physiologic and Genetic Disruption of Circadian Rhythms Accelerates Lung Tumorigenesis
(A and B) Representative double-plotted actograms of KP mice subjected to (A) regular LD12:12 (left) and (B) an 8-hr phase advance by jet lag (right) are shown.
(C) Schematic shows the timeline of the experiment to assess the effects of jet lag on lung tumorigenesis.
(D and E) Histological assessments of (D) lung tumor burden and (E) grade in KP mice placed in normal LD12:12 (n = 6) or jet lag conditions at initiation (n = 7) or tumor progression (n = 7) are shown.
(F) Kaplan-Meier survival analysis for KP animals placed in LD12:12 (n = 15) or jet lag initiation (n = 13) or progression (n = 13) conditions is shown.
(G and H) Histological analyses of (G) lung tumor burden and (H) grade in KP mice with WT (Per2+/+) (n = 12) or germline mutant (Per2m/m) Per2 (n = 12) are shown.
(I) Kaplan-Meier survival analysis for KP animals with WT (Per2+/+) (n = 10) or mutant (Per2m/m) Per2 (n = 5) is shown.
(J) Surface tumor number in KrasLA2/+ WT (+/+) animals (n = 12), systemic loss of Per2 (Per2m/m) (n = 6), and Bmal1 loss (Bmal1−/−) (n = 8) are shown.
(K) Kaplan-Meier survival analysis for KrasLA2/+ animals with WT (+/+) (n = 50), Per2m/m (n = 31), and Bmal1−/− (n = 7). All error bars denote SEM (∗p < 0.05, ∗∗p < 0.01, and ∗∗∗p < 0.001; n.s., not significant). To obtain p values, a log-rank (Mantel-Cox) test was performed for Kaplan-Meier survival and two-sided Student's t test was performed for histological analyses of tumor burden, grade, and number.
Cell Metabolism  , DOI: ( /j.cmet )
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4. Figure 2
Cell-Autonomous Loss of Circadian Genes Enhances Transformation and Tumorigenesis
(A) Graph shows histological assessment of lung tumor burden in K animals with tumor-specific loss of Bmal1 (Bmal1Δ/Δ) (n = 17) compared to WT controls (Bmal1+/+) (n = 14).
(B and C) Immunohistochemical staining for Bmal1 in (B) Bmal1+/+ and (C) Bmal1Δ/Δ K tumors. Insets represent high-magnification images. Scale bar, 0.1 mm.
(D) Western blot (WB) and Surveyor analysis of Per2 protein and the Per2 locus, respectively, in KP cell lines where Per2 was targeted by three different short-guide RNAs (sgRNAs) using the CRISPR/Cas9 system are shown.
(E–G) Representative of three independent replicate low-density clonogenicity assays in Ctrl (E), sgPer2.1- (F), and sgPer2.3- (G) targeted KP cells is shown.
(H) Tumor volume measurements of subcutaneous transplanted CRISPR/Cas9-targeted KP murine lung cancer cells are shown.
(I) Flow cytometry measurements of EdU incorporation in KP MEFs with WT (+/+) or mutant (Per2m/m) Per2 are shown.
(J) Colony numbers from low-density clonogenicity assays in WT (+/+) or mutant (Per2m/m) Per2 KP cells are shown.
(K) Colony numbers from 3D agar assays of WT (+/+) or mutant (Per2m/m) Per2 KP cells. All experiments in (E)–(K) represent data from three independent experimental replicates from three independent MEF lines. All error bars denote SEM (∗p < 0.05 and ∗∗p < 0.01, obtained from two-sided Student’s t test).
Cell Metabolism  , DOI: ( /j.cmet )
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5. Figure 3
Enhanced Proliferation and Increased Levels of c-Myc in Circadian Mutant Tumors
(A and B) Immunohistochemical analysis shows BrdU incorporation in tumors from (A) K animals with WT (+/+) (n = 24), mutant Per2 (Per2m/m) (n = 16), and Bmal1 mutant (Bmal1Δ/Δ) (n = 16) tumors and (B) KP animals with WT (+/+) (n = 10) and mutant Per2 (Per2m/m) (n = 10).
(C and D) Immunohistochemical staining shows c-Myc (C) K animals with WT (+/+) (n = 6), mutant Per2 (Per2m/m) (n = 6), and Bmal1 mutant (Bmal1Δ/Δ) (n = 6) tumors and (D) KP animals with WT (+/+) (n = 10) and mutant Per2 (Per2m/m) (n = 10).
(E–I) Representative c-Myc immunohistochemical images show K (E) WT (+/+), (F) Per2 mutant (Per2m/m), and (G) Bmal1 mutant (Bmal1Δ/Δ) and KP (H) WT (+/+) and (I) Per2 mutant (Per2m/m). All error bars denote SEM (∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001, and ∗∗∗∗p < , obtained from two-sided Student’s t test). Scale bars, 0.1 mm. n, individual tumors.
Cell Metabolism  , DOI: ( /j.cmet )
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6. Figure 4
Altered Glucose and Glutamine Metabolism in Circadian Mutant Cells
(A–C) Measurements (milligrams per liter per million cells per hour) of (A) glucose consumption, (B) lactate excretion, and (C) glutamine consumption in KP WT (Per2+/+) or mutant (Per2m/m) cells are shown.
(D) Percentage M4 carbon labeling enrichment in TCA cycle intermediates in KP WT (Per2+/+) or mutant (Per2m/m) cells. Error bars denote SD (∗p < 0.05, ∗∗p < 0.01, and ∗∗∗∗p < , obtained from two-sided Student’s t test).
Cell Metabolism  , DOI: ( /j.cmet )
Copyright © 2016 Elsevier Inc. Terms and Conditions