Genetic variants in the mTOR pathway with renal cancer risk and subtypes in East Indian population

Subhajit Malakar1, Srilagna Chatterjee2, Madhusudhan Das2

  • 1Department of Urology, IPGME&R and SSKM Hospital, Kolkata, West Bengal, India.

Urologia
|January 11, 2024
PubMed
Abstract

Insights

Genetic variants in the MTOR and AKT1 genes are linked to clear cell Renal Cell Carcinoma (RCC). This finding may lead to personalized treatments and targeted screening for kidney cancer.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Renal Cell Carcinoma (RCC) is a significant malignancy with a male predominance.
  • The phosphoinositide-3-kinase-protein kinase B/Akt (PI3K/Akt) and mTOR pathways are crucial in cell growth and RCC pathogenesis.

Purpose of the Study:

  • To investigate the association between genetic polymorphisms in key pathway genes and clear cell RCC.
  • To identify potential genetic markers for RCC risk and therapeutic targeting.

Main Methods:

  • A prospective observational study design was employed.
  • DNA isolation and sequencing were performed on tissue samples.
  • Polymorphism analysis was conducted on the MTOR, AKT1, and PIK3CA genes.

Main Results:

  • An intronic variant in the MTOR gene (rs3737611) was significantly associated with clear cell RCC.
  • A specific variant in the AKT1 gene (rs2498797) also showed a significant association with clear cell RCC.
  • No significant association was found for PIK3CA gene variants.

Conclusions:

  • Genetic variations in MTOR and AKT1 are implicated in the pathogenesis of clear cell RCC.
  • These findings could inform the development of personalized treatment strategies and targeted therapies.
  • Identifying at-risk individuals for enhanced screening or preventative measures is a potential application.

Related Concept Videos

mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.8K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
3.6K
The Ras Gene02:38

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
6.2K
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.1K
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
7.4K
Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
8.9K