1. Li, F.; Simon, M.C. Cancer Cells Don’t Live Alone: Metabolic Communication within Tumor Microenvironments. Dev. Cell 2020, 54, 183–195. DOI: 10.1016/j.devcel.2020.06.018
2. Hanahan, D.; Weinberg, R.A. Hallmarks of Cancer: The next Generation. Cell 2011, 144, 646–674. DOI: 10.1016/j.cell.2011.02.013
3. Pavlova, N.N.; Thompson, C.B. The Emerging Hallmarks of Cancer Metabolism. Cell Metab. 2016, 23, 27–47. DOI: 10.1016/j.cmet.2015.12.006
4. Kordes, M.; Larsson, L.; Engstrand, L.; Löhr, J.-M. Pancreatic Cancer Cachexia: Three Dimensions of a Complex Syndrome. Br. J. Cancer 2021, 124, 1623–1636. DOI: 10.1038/s41416-021-01301-4
5. Morita-Tanaka, S.; Yamada, T.; Takayama, K. The Landscape of Cancer Cachexia in Advanced Non-Small Cell Lung Cancer: A Narrative Review. Transl. Lung Cancer Res. 2023, 12, 168–180. DOI: 10.21037/tlcr-22-561
6. Naser, F.J.; Jackstadt, M.M.; Fowle-Grider, R.; Spalding, J.L.; Cho, K.; Stancliffe, E.; Doonan, S.R.; Kramer, E.T.; Yao, L.; Krasnick, B.; et al. Isotope Tracing in Adult Zebrafish Reveals Alanine Cycling between Melanoma and Liver. Cell Metab. 2021, 33, 1493-1504.e5. DOI: 10.1016/j.cmet.2021.04.014
7. Mayers, J.R.; Wu, C.; Clish, C.B.; Kraft, P.; Torrence, M.E.; Fiske, B.P.; Yuan, C.; Bao, Y.; Townsend, M.K.; Tworoger, S.S.; et al. Elevation of Circulating Branched-Chain Amino Acids Is an Early Event in Human Pancreatic Adenocarcinoma Development. Nat. Med. 2014, 20, 1193–1198. DOI: 10.1038/nm.3686
8. Mann, G.; Mora, S.; Madu, G.; Adegoke, O.A.J. Branched-Chain Amino Acids: Catabolism in Skeletal Muscle and Implications for Muscle and Whole-Body Metabolism. Front. Physiol. 2021, 12, Art. No: 702826. DOI: 10.3389/fphys.2021.702826
9. Lynch, C.J.; Adams, S.H. Branched-Chain Amino Acids in Metabolic Signalling and Insulin Resistance. Nat. Rev. Endocrinol. 2014, 10, 723–736. DOI: 10.1038/nrendo.2014.171
10. Kurmi, K.; Haigis, M.C. Nitrogen Metabolism in Cancer and Immunity. Trends Cell Biol. 2020, 30, 408–424. DOI: 10.1016/j.tcb.2020.02.005
11. Nicklin, P.; Bergman, P.; Zhang, B.; Triantafellow, E.; Wang, H.; Nyfeler, B.; Yang, H.; Hild, M.; Kung, C.; Wilson, C.; et al. Bidirectional Transport of Amino Acids Regulates MTOR and Autophagy. Cell 2009, 136, 521–534. DOI: 10.1016/j.cell.2008.11.044
12. Harris, R.A.; Joshi, M.; Jeoung, N.H.; Obayashi, M. Overview of the Molecular and Biochemical Basis of Branched-Chain Amino Acid Catabolism. J. Nutr. 2005, 135, 1527S-1530S. DOI: 10.1093/jn/135.6.1527S
13. Sivanand, S.; Vander Heiden, M.G. Emerging Roles for Branched-Chain Amino Acid Metabolism in Cancer. Cancer Cell 2020, 37, 147–156. DOI: 10.1016/j.ccell.2019.12.011
14. Xu, Y.; Yu, W.; Yang, T.; Zhang, M.; Liang, C.; Cai, X.; Shao, Q. Overexpression of BCAT1 Is a Prognostic Marker in Gastric Cancer. Hum. Pathol. 2018, 75, 41–46. DOI: 10.1016/j.humpath.2018.02.003
15. Shu, X.; Zhan, P.-P.; Sun, L.-X.; Yu, L.; Liu, J.; Sun, L.-C.; Yang, Z.-H.; Ran, Y.-L.; Sun, Y.-M. BCAT1 Activates PI3K/AKT/MTOR Pathway and Contributes to the Angiogenesis and Tumorigenicity of Gastric Cancer. Front. Cell Dev. Biol. 2021, 9, Art. No: 659260. DOI: 10.3389/fcell.2021.659260
16. Tönjes, M.; Barbus, S.; Park, Y.J.; Wang, W.; Schlotter, M.; Lindroth, A.M.; Pleier, S. V; Bai, A.H.C.; Karra, D.; Piro, R.M.; et al. BCAT1 Promotes Cell Proliferation through Amino Acid Catabolism in Gliomas Carrying Wild-Type IDH1. Nat. Med. 2013, 19, 901–908. DOI: 10.1038/nm.3217
17. Li, J.-T.; Li, K.-Y.; Su, Y.; Shen, Y.; Lei, M.-Z.; Zhang, F.; Yin, M.; Chen, Z.-J.; Wen, W.-Y.; Hu, W.-G.; et al. Diet High in Branched-Chain Amino Acid Promotes PDAC Development by USP1-Mediated BCAT2 Stabilization. Natl. Sci. Rev. 2022, 9, Art. No: nwab212. DOI: 10.1093/nsr/nwab212
18. Li, J.-T.; Yin, M.; Wang, D.; Wang, J.; Lei, M.-Z.; Zhang, Y.; Liu, Y.; Zhang, L.; Zou, S.-W.; Hu, L.-P.; et al. BCAT2-Mediated BCAA Catabolism Is Critical for Development of Pancreatic Ductal Adenocarcinoma. Nat. Cell Biol. 2020, 22, 167–174. DOI: 10.1038/s41556-019-0455-6
19. Zhang, L.; Han, J. Branched-Chain Amino Acid Transaminase 1 (BCAT1) Promotes the Growth of Breast Cancer Cells through Improving MTOR-Mediated Mitochondrial Biogenesis and Function. Biochem. Biophys. Res. Commun. 2017, 486, 224–231. DOI: 10.1016/j.bbrc.2017.02.101
20. Hattori, A.; Tsunoda, M.; Konuma, T.; Kobayashi, M.; Nagy, T.; Glushka, J.; Tayyari, F.; McSkimming, D.; Kannan, N.; Tojo, A.; et al. Cancer Progression by Reprogrammed BCAA Metabolism in Myeloid Leukaemia. Nature 2017, 545, 500–504. DOI: 10.1038/nature22314
21. Neinast, M.; Murashige, D.; Arany, Z. Branched Chain Amino Acids. Annu. Rev. Physiol. 2019, 81, 139–164. DOI: 10.1146/annurev-physiol-020518-114455
22. Hagenfeldt, L.; Eriksson, S.; Wahren, J. Influence of Leucine on Arterial Concentrations and Regional Exchange of Amino Acids in Healthy Subjects. Clin. Sci. (Lond). 1980, 59, 173–181. DOI: 10.1042/cs0590173
23. Eriksson, S.; Hagenfeldt, L.; Wahren, J. A Comparison of the Effects of Intravenous Infusion of Individual Branched-Chain Amino Acids on Blood Amino Acid Levels in Man. Clin. Sci. (Lond). 1981, 60, 95–100. DOI: 10.1042/cs0600095
24. Peng, H.; Wang, Y.; Luo, W. Multifaceted Role of Branched-Chain Amino Acid Metabolism in Cancer. Oncogene 2020, 39, 6747–6756. DOI: 10.1038/s41388-020-01480-z
25. Ericksen, R.E.; Lim, S.L.; McDonnell, E.; Shuen, W.H.; Vadiveloo, M.; White, P.J.; Ding, Z.; Kwok, R.; Lee, P.; Radda, G.K.; et al. Loss of BCAA Catabolism during Carcinogenesis Enhances MTORC1 Activity and Promotes Tumor Development and Progression. Cell Metab. 2019, 29, 1151-1165.e6. DOI: 10.1016/j.cmet.2018.12.020
26. Saxton, R.A.; Sabatini, D.M. MTOR Signaling in Growth, Metabolism, and Disease. Cell 2017, 168, 960–976. DOI: 10.1016/j.cell.2017.02.004
27. Wolfson, R.L.; Chantranupong, L.; Saxton, R.A.; Shen, K.; Scaria, S.M.; Cantor, J.R.; Sabatini, D.M. Sestrin2 Is a Leucine Sensor for the MTORC1 Pathway. Science 2016, 351, 43–48. DOI: 10.1126/science.aab2674
28. Nie, C.; He, T.; Zhang, W.; Zhang, G.; Ma, X. Branched Chain Amino Acids: Beyond Nutrition Metabolism. Int. J. Mol. Sci. 2018, 19(4), Art. No: 954. DOI: 10.3390/ijms19040954
29. Bidgood, C.L.; Philp, L.K.; Rockstroh, A.; Lehman, M.; Nelson, C.C.; Sadowski, M.C.; Gunter, J.H. Targeting Valine Catabolism to Inhibit Metabolic Reprogramming in Prostate Cancer. Cell Death Dis. 2024, 15, Art. No: 513. DOI: 10.1038/s41419-024-06893-2
30. Katagiri, R.; Goto, A.; Nakagawa, T.; Nishiumi, S.; Kobayashi, T.; Hidaka, A.; Budhathoki, S.; Yamaji, T.; Sawada, N.; Shimazu, T.; et al. Increased Levels of Branched-Chain Amino Acid Associated With Increased Risk of Pancreatic Cancer in a Prospective Case-Control Study of a Large Cohort. Gastroenterology 2018, 155, 1474-1482.e1. DOI: 10.1053/J.GASTRO.2018.07.033
31. Mohamed, A.; Deng, X.; Khuri, F.R.; Owonikoko, T.K. Altered Glutamine Metabolism and Therapeutic Opportunities for Lung Cancer. Clin. Lung Cancer 2014, 15, 7–15. DOI: 10.1016/j.cllc.2013.09.001
32. Yuneva, M.O.; Fan, T.W.M.; Allen, T.D.; Higashi, R.M.; Ferraris, D. V; Tsukamoto, T.; Matés, J.M.; Alonso, F.J.; Wang, C.; Seo, Y.; et al. The Metabolic Profile of Tumors Depends on Both the Responsible Genetic Lesion and Tissue Type. Cell Metab. 2012, 15, 157–170. DOI: 10.1016/j.cmet.2011.12.015
33. Vander Heiden, M.G.; Cantley, L.C.; Thompson, C.B. Understanding the Warburg Effect: The Metabolic Requirements of Cell Proliferation. Science 2009, 324, 1029–1033. DOI: 10.1126/science.1160809
34. Liberti, M. V; Locasale, J.W. The Warburg Effect: How Does It Benefit Cancer Cells? Trends Biochem. Sci. 2016, 41, 211–218. DOI: 10.1016/j.tibs.2015.12.001
35. Kamphorst, J.J.; Nofal, M.; Commisso, C.; Hackett, S.R.; Lu, W.; Grabocka, E.; Vander Heiden, M.G.; Miller, G.; Drebin, J.A.; Bar-Sagi, D.; et al. Human Pancreatic Cancer Tumors Are Nutrient Poor and Tumor Cells Actively Scavenge Extracellular Protein. Cancer Res. 2015, 75, 544–553. DOI: 10.1158/0008-5472.CAN-14-2211