PGC-1α mediates mitochondrial biogenesis and oxidative phosphorylation in cancer cells to promote metastasis (original) (raw)

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In the version of this Article originally published, the number of patients who were PGC-1α- with detected CTCs in Fig. 8f should have read 'n = 2 (18.2%)'. This error has now been corrected in the online version of the Article.

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Acknowledgements

This study was primarily supported by funds from the Cancer Prevention and Research Institute of Texas and funds from MD Anderson Cancer Center (MDACC). J.T.O’C. was financially supported by the DoD Breast Cancer Research Predoctoral Traineeship Award (W81XWH-09-1-0008). R.K. is supported by NIH Grants CA125550, CA155370, CA151925, DK081576 and DK055001. Mass spectrometry work was partially supported by CA12096405 (J.M.A.) and CA00651646 (J.M.A.). We wish to thank B. Spiegelman and J. Estall (Dana Farber Cancer Institute, Boston, Massachusetts, USA) for providing us with reagents related to PGC-1α. We thank M. Protopopova (MDACC, Houston, Texas) and F. Muller (MDACC, Houston, Texas) for their help with the Seahorse experiments. We thank L. Cantley (BIDMC, Boston, Massachusetts) for his critical reading of the manuscript. We also thank M. Yuan and S. Breitkopf (BIDMC, Boston, Massachusetts) for their help with mass spectrometry experiments, and G. Buruzula and J. LaVecchio at the Joslin Flow Cytometry Core Facility (Joslin Diabetes Center, Boston, Massachusetts) for helping with flow cytometry experiments. For electron microscopy imaging, the High Resolution Electron Microscopy Facility at UTMDACC is supported by the Institutional Core Grant CA16672. We thank R. Langley for help in editing of the manuscript.

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Authors and Affiliations

  1. Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
    Valerie S. LeBleu & Raghu Kalluri
  2. Division of Matrix Biology, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
    Valerie S. LeBleu, Joyce T. O’Connell & Raghu Kalluri
  3. Department of Cell Biology, Paul F. Glenn Laboratories for the Biological Mechanisms of Aging, Harvard Medical School, Boston, Massachusetts 02115, USA
    Karina N. Gonzalez Herrera & Marcia C. Haigis
  4. Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52 D-20246 Hamburg, Germany,
    Harriet Wikman & Klaus Pantel
  5. International Research Center, A. C. Camargo Cancer Center, 01509-010, Sao Paulo, Brazil
    Fernanda Machado de Carvalho, Aline Damascena, Ludmilla Thome Domingos Chinen & Rafael M. Rocha
  6. Division of Signal Transduction, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
    John M. Asara
  7. Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
    John M. Asara

Authors

  1. Valerie S. LeBleu
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  2. Joyce T. O’Connell
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  3. Karina N. Gonzalez Herrera
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  4. Harriet Wikman
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  5. Klaus Pantel
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  6. Marcia C. Haigis
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  7. Fernanda Machado de Carvalho
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  8. Aline Damascena
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  9. Ludmilla Thome Domingos Chinen
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  10. Rafael M. Rocha
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  11. John M. Asara
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  12. Raghu Kalluri
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Contributions

J.T.O’C. performed data analyses and helped with the preparation of figures; K.N.G.H. performed experiments; H.W., K.P. and M.C.H. helped with data analyses; F.M.d.C., L.T.D.C., R.M.R. and J.M.A. performed experiments and analysed data, A.D. performed statistical analyses, V.S.L. performed experiments, analysed the data and contributed to the design of the experiment, writing of the manuscript and preparation of figures, R.K. contributed to the conceptual design of the study and provided advice regarding experiments and writing of the manuscript.

Corresponding author

Correspondence toRaghu Kalluri.

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Integrated supplementary information

Supplementary Figure 2 CCC display increased mitochondria biogenesis associated with PGC-1α expression in multiple models of metastasis.

A. Quantitative PCR analyses of relative expression of indicated genes in CCC and MCC normalized to PCC (arbitrarily set to 1). Expression of ACC, FASN, CK8 in CCC and ACC in MCC was not detected (no bars) (n = 5 RNA samples from 5 mice, unpaired two-tailed Student’s t_-test, see also Fig. 2a). B. PGC-1α expression in PCC (n = 5), CCC (n = 5) and MCC (n = 4) from MMTV-PyMT mice. n = RNA samples from n mice. C. PGC-1α expression (n = 5 RNA samples from 5 mice) and D. mitochondrial DNA (mtDNA) content (n = 3 DNA samples from 3 mice) in PCC, CCC and MCC from MDA-MB-231 orthotopic tumour model. E. PGC-1α expression (n = 5 RNA samples from 5 mice) and F. mitochondrial DNA (mtDNA) content (n = 3 DNA samples from 3 mice) in PCC, CCC and MCC from B16F10 orthotopic tumour model. Data is represented as mean ± s.e.m. Unless otherwise specified, one-way ANOVA was used. ∗_P < 0.05,∗∗P < 0.01,∗∗∗P < 0.001,∗∗∗∗P < 0.0001.

Supplementary Figure 3 PGC-1α knockdown is associated with decreased mitochondria number and impairs invasion and migration of cancer cells in a complex I dependent manner.

A–B. Transmission electron microscopy images of MDAMB231 shScrbl and shPGC-1α cells (A) and B16F10 shScrbl and shPG1α, (B) white arrowheads and ‘M’ identify mitochondria. Scale bar upper panel: 2 μm, insert and lower panel: 500 nm. C–D. Quantification of the number of mitochondria per cell in MDAMB231 (shScrbl, n = 3 cells; shPGC-1α, n = 4 cells) (C) and B16F10 (shScrbl, n = 4 cells; shPGC-1α, n = 3 cells), unpaired two-tailed Student’s t_-test. Scale bar upper panel: 2 μm, insert and lower panel: 500 nm. E. Hematoxylin stained 4T1 cells following invasion, and light microscopy imaging of migrated cells in scratch assay migration, quantitation of invasion assay (n = 3 wells/group) and migration assay (n = 3 wells/group). Scale bar, 50 μm. One-way ANOVA. Ad. PGC-1α: adenoviral induction of PGC-1α expression. Data is represented as mean ± s.e.m.∗_P < 0.05,∗∗P < 0.01,∗∗∗P < 0.001.

Supplementary Figure 4 Knockdown of PGC-1α in B16F10 cells suppresses their mitochondria function and invasive properties.

A. Relative PGC-1α expression in B16F10shPGC-1α cells, normalized to B16F10shScrbl cells (n = 3 RNA samples/cell line, unpaired two-tailed Student’s t_-test). B. Western blot for PGC-1α in B16F10shPGC-1α and B16F10shScrbl cells. See also Supplementary Fig. 9. C. Relative mitochondrial DNA (mtDNA) content (n = 3 DNA samples/cell line, unpaired two-tailed Student’s t_-test) and D. mitochondrial protein content (n = 2 lysates/cell line) relative to total cell protein content in B16F10shPGC-1α normalized to B16F10shScrbl cells. E. Intracellular ATP levels in B16F10shPGC-1α normalized to B16F10shScrbl cells (n = 3 lysates/cell line, unpaired two-tailed Student’s t_-test). F. Oxygen consumption rate (OCR) in B16F10shPGC-1α normalized to B16F10shScrbl cells (n = 4 wells/cell line). G. Hematoxylin stained B16F10 cells following invasion (scale bar, 50 μm), and H. quantitation of invasion assay (n = 6 wells/group, one-way ANOVA). Ad. PGC-1α: adenoviral induction of PGC-1α expression. I. Light microscopy imaging (scale bar, 50 μm) of migrated cells in scratch assay and J. quantitation of migration assay (n = 5 wells/group, one-way ANOVA). K. Type I collagen gel area reflecting gel contraction by indicated cells (n = 4 wells/group, unpaired two-tailed Student’s t_-test). Data is represented as mean ± s.e.m.∗_P < 0.05,∗∗_P < 0.01,∗∗∗_P < 0.001,∗∗∗∗_P < 0.0001.

Supplementary Figure 5 Knockdown of PGC-1α in MDA-MB-231 cells suppresses their mitochondria function and invasive properties.

A. Relative PGC-1α expression in MDA-MB-231shPGC-1α cells, normalized to MDA-MB-231shScrbl cells (n = 3 RNA samples/cell line, unpaired two-tailed Student’s t_-test). B. Western blot for PGC-1α in MDA-MB-231shPGC-1α and MDA-MB-231shScrbl cells. See also Supplementary Fig. 9. C. Relative mitochondrial DNA (mtDNA) (n = 3 DNA samples/cell line, unpaired two-tailed Student’s t_-test) and D. mitochondrial protein content relative to total cell protein content (n = 2 lysates/cell line) in MDA-MB-231shPGC-1α normalized to MDA-MB-231shScrbl cells. E. Intracellular ATP levels in MDA-MB-231shPGC-1α normalized to MDA-MB-231shScrbl cells (n = 3 lysates/cell line, unpaired two-tailed Student’s t_-test). F. Oxygen consumption rate (OCR) in MDA-MB-231shPGC-1α (n = 3 wells) normalized to MDA-MB-231shScrbl cells (n = 4 wells). G. Hematoxylin stained MDA-MB-231 cells following invasion (scale bar, 50 μm), and H. quantitation of invasion assay (n = 4 wells/group, one-way ANOVA). Ad. PGC-1α: adenoviral induction of PGC-1α expression. I. Light microscopy imaging (scale bar, 50 μm) of migrated cells in scratch assay and J. quantitation of migration assay (n = 3 wells/group, one-way ANOVA). K. Type I collagen gel area reflecting gel contraction by indicated cells (n = 4 wells/group, unpaired two-tailed Student’s t_-test). Data is represented as mean ± s.e.m.∗_P < 0.05,∗∗_P < 0.01,∗∗∗_P < 0.001,∗∗∗∗_P < 0.0001. NS, not significant.

Supplementary Figure 6 Changes in metabolites associated with PGC-1α suppression.

Heat map rendering of the metabolites measured by targeted metabolomics analyses in the indicated metabolism pathways of 4T1sh PGC-1α normalized to 4T1shScrbl cells (arbitrarily set to 0).

Supplementary Figure 7 PGC-1α suppression minimally impact glycolysis but impairs metastasis.

A. Percent 13C labelled metabolites derived from labelled glucose fed to 4T1shPGC-1α and 4T1shScrbl cells. Metabolites are clustered with respect to the listed metabolic pathways they are associated with n = 3 wells/cell line. PPP, pentose phosphate pathway; Polysac., polysaccharides; AA (amino acids) and FA (fatty acids) synthesis. Statistics source data can be found in Supplementary Table 6. B. Relative PGC-1α expression in two clones of 4T1shPGC-1α normalized to 4T1shScrbl cells (shScrbl: n = 3, shPGC-1α clone 1: n = 3, shPGC-1α clone 2: n = 4 RNA samples/cell line, unpaired two-tailed Student’s t_-test). C. Tumour volume measured over time and D. Tumour weight at experimental endpoint (shScrbl, n = 6 mice; shPGC-1α clone 1, n = 7 mice; shPGC-1α clone 1 n = 5 mice). E. Number of surface lung nodules in 4T1 orthotopic tumour model (shScrbl, n = 6 mice; shPGC-1α clone 1, n = 7 mice; shPGC-1α clone 1 n = 5 mice, one-way ANOVA). Data is represented as mean ± s.e.m.∗∗∗_P < 0.001,∗∗∗∗P < 0.0001.

Supplementary Figure 8 Knockdown of PGC-1α in MDA-MB-231 and B16F10 cells impairs metastasis.

A. MDA-MB-231shScrbl and MDA-MB-231shPGC-1α cells were implanted in the mammary fat pad of nude mice. Tumour volume measured over time. B. Tumour weight at experimental endpoint. C. Number of CCC colonies formed. D. Percent of GFP+ cancer cells per 200 μl blood collected at experimental endpoint. E. Representative images of H&E stained lung sections and quantitation of per cent metastatic lung surface area relative to total lung surface area. Metastatic lung nodules are encircled. Scale bar, 50 μm. F. Number of lung surface nodules. For A–F: MDA-MB-231shScrbl, n = 5 mice; MDA-MB-231shPGC-1α, n = 5 mice, unpaired two-tailed Student’s _t_-test. G. Representative images of H&E stained lung sections of mice with i.v. injection of indicated cells and per cent metastatic surface area relative to total lung surface area. Lung nodules are encircled. Scale bar, 50 μm. H. Number of lung surface nodules following i.v. injection of indicated cells. For G–H: MDA-MB-231shScrbl, n = 5 mice; MDA-MB-231shPGC-1α, n = 5 mice, unpaired two-tailed Student’s t_-test. I. B16F10shScrbl and B16F10shPGC-1α cells were implanted subcutaneously in C57Bl/6 mice. Tumour volume measured over time. J. Tumour weight at experimental endpoint. K. Number of CCC colonies formed. L. Percent of GFP+ cancer cells per 200 μl blood collected at experimental endpoint. M. Representative images of H&E stained lung sections and quantitation of per cent metastatic lung surface area relative to total lung surface area. Metastatic lung nodules are encircled. Scale bar, 50 μm. N. Number of lung surface nodules. For I–N: B16F10shScrbl, n = 5 mice; B16F10shPGC-1α: n = 5 mice, unpaired two-tailed Student’s t_-test. O. Representative images of H&E stained lung sections of mice with i.v. injection of indicated cells and per cent metastatic surface area relative to total lung surface area. Lung nodules are encircled. Scale bar, 50 μm. P. Number of lung surface nodules following i.v. injection of indicated cells. For O–P: B16F10shScrbl, n = 5 mice; B16F10shPGC-1α: n = 5 mice, unpaired two-tailed Student’s t_-test. Data is represented as mean ± s.e.m.∗_P < 0.05,∗∗_P < 0.01,∗∗∗∗_P < 0.0001.

Supplementary Figure 9 Uncropped western blots.

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LeBleu, V., O’Connell, J., Gonzalez Herrera, K. et al. PGC-1α mediates mitochondrial biogenesis and oxidative phosphorylation in cancer cells to promote metastasis.Nat Cell Biol 16, 992–1003 (2014). https://doi.org/10.1038/ncb3039

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