ReviewThe metabolic basis of kidney cancer
Section snippets
An introduction to kidney cancer
It is now known that kidney cancer is not a single uniform disease; it is in fact a number of different and specific types of cancers that can occur within the kidney. Each of these different types of kidney cancer can be characterized by differing histologies, different clinical courses, differing responses to a number of varied therapies and association with alterations to different tumor suppressor genes or oncogenes. Currently there are at least twelve different genes associated with the
Hereditary kidney cancer
Much of what we know about the genetic basis of kidney cancer was learned from the study of inherited forms of kidney cancer. There are a number of familial forms of kidney cancer, including von Hippel–Lindau (VHL), Hereditary Papillary Renal Carcinoma (HPRC), Birt–Hogg–Dubé (BHD), Hereditary Leiomyomatosis Renal Cell Carcinoma (HLRCC), Succinate Dehydrogenase Renal Cell Carcinoma (SDH-RCC), Tuberous Sclerosis (TS), and Cowden's Disease (Fig. 1) [1], [2]. All these syndromes are associated with
Von Hippel–Lindau (VHL): clear cell kidney cancer
Von Hippel–Lindau (VHL) is a hereditary kidney cancer syndrome in which affected individuals are at risk for the development of tumors in a number of organs, including the kidneys [3]. It represents a well studied form of inherited cancer risk syndrome, which has additionally provided invaluable insight into the study of non-familial, sporadic kidney cancer.
Hereditary papillary renal carcinoma (HPRC): type 1 papillary kidney cancer
Hereditary papillary renal carcinoma (HPRC) is an autosomal dominant hereditary cancer syndrome in which affected individuals are at risk for the development of bilateral, multifocal type 1 papillary kidney cancer (Fig. 3) [33], [34]. It is estimated that patients affected with HPRC are at risk for the development of up to 1100 tumors per kidney throughout their lifetime [35].
Clinical management, like in patients with VHL-associated kidney tumors, involves active surveillance until the largest
Birt–Hogg–Dubé (BHD): chromophobe kidney cancer
Birt–Hogg–Dubé is an autosomal dominant, hereditary cancer syndrome in which affected individuals are at risk for the development of cutaneous fibrofolliculomas [41], pulmonary cysts [42] and kidney cancer [43]. BHD-associated kidney cancers can be multifocal, bilateral and they can metastasize. Patients affected with BHD are at risk for the development of chromophobe, hybrid oncocytic, and clear cell kidney cancer and oncocytoma (Fig. 4) [44]. Like VHL and HPRC, BHD-associated kidney cancers
MiT transcription factor associated kidney cancer
The MiT family of transcription factors includes TFE3, TFEB, MITF, and TFEC, a family of transcription factors that share a highly homologous basic-helix-loop-helix-leucine zipper DNA binding and dimerization domain. These proteins can produce both hetero- and homodimers and bind identical DNA response elements, suggesting that they may have common downstream targets and a degree of functional redundancy. In tumors, these genes are mainly over expressed due to somatic translocations that create
Tuberous sclerosis complex: regulation of the mTOR pathway
The tuberous sclerosis complex (TSC) is an autosomal dominant disorder in which affected individuals are at risk for the development of manifestations involving multiple organs, including cutaneous angiofribroma, pulmonary lymphangiomyomatosis and renal tumors [68]. Although angiomyolipoma is the most common type of renal tumor found in TSC patients, other types of tumors have been identified, including clear cell kidney cancer [69].
Cowden syndrome: PTEN and the regulation of the mTOR pathway
Cowden syndrome is an autosomal dominant disorder that results from germline mutation of the PTEN gene, in which affected individuals are at risk for manifestations in a number of organs, including tumors of the breast, thyroid, endometrium and kidney [73], [74], [75]. The protein product of the PTEN gene, PTEN, is a phosphatase that catalyzes the conversion of PIP3 (phosphatidylinositol 3,4,5 triphosphate) to PIP2 (phosphatidylinositol 4,5 biphosphate). In response to growth factor receptor
Tricarboxylic acid mutation kidney cancers: exemplifying the Warburg effect
In the 1920s Otto Warburg proposed that a basic characteristic of cancer would be that it is characterized by aerobic glycolysis [77], [78]. Subsequently, this has been shown to be true to a greater and lesser extent in nearly all general cancer types, including kidney cancer. There are two types of inherited kidney cancer that are unique examples of the Warburg effect in cancer driven by specific gene mutation; fumarate hydratase-deficient kidney cancer and succinate dehydrogenase deficient
Conclusion – kidney cancer is a metabolic disease
Kidney cancer is fundamentally a metabolic disease. The known genes for kidney cancer, VHL, MET, FLCN, MITF, TFE3, TFEB, TSC1, TSC2, PTEN, FH, SDHB and SDHD are involved in the cell's ability to sense oxygen, iron, nutrients, and, particularly in the TCA cycle enzymes, energy (Fig. 7). Although significant progress has been made targeting, we still have a long way to go. Most patients treated with the approved drugs targeting the VHL gene pathway, such as sunitinib, sorafenib, bevacuzimab,
Acknowledgements
This research was supported by the Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research.
The authors thanks Georgia Shaw for the outstanding editorial and graphics support.
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2023, Penn Clinical Manual of Urology, Third EditionHypoxia-inducible factor pathway genes predict survival in metastatic clear cell renal cell carcinoma
2022, Urologic Oncology: Seminars and Original InvestigationsCitation Excerpt :Non-canonical HIF regulation involves oxygen-independent mechanisms. These mechanisms ultimately increase HRGs by suppressing PHD [4] or altering HIF stability [5] Examples of these mechanisms include the Warburg effect and deficiency in enzymes like succinate dehydrogenase and fumarate hydratase that result in accumulation of metabolites that inhibit PHD. RACK1 (receptor of activated protein C kinase) and HSP90 (heat shock protein 90) are other examples of proteins that bind and modulate HIF1α stability [6].
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