Abstract
Insulin resistance is characterized by molecular defects in the insulin-signaling pathway. Such defects disrupt cellular homeostasis and impede normal biochemical response. The mechanistic obstruction of biomolecules in the pathway leads to a number of health consequences that are grouped into a cluster of illnesses widely known as “metabolic syndrome” which creates abnormal health states of chronic condition like heart disease, diabetes, cancer, and Alzheimer’s disease, a type of dementia also known as “diabetes type 3,” which all have a profound effect and greatly impact the overall health. The interplay of major pathways leading to glucose homeostasis and energy production is explored. Molecular docking is utilized to understand possible intermolecular forces between key molecules in the signaling pathways. Emphasis is placed on the major components of insulin signaling, especially on how individual protein molecules of the pathways are interacting with each other in the signaling cascade. The relationship between the respective diseases and the signaling cascades is explored. Molecular links in the insulin pathway will be explored in detail, in order to correlate major mechanisms that lead to insulin resistance and related pathological conditions.
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Abbreviations
- 4EBP1:
-
Eukaryotic translation initiation factor 4E-binding protein 1
- AD:
-
Alzheimer’s disease
- Akt:
-
Protein kinase B (PKB)
- APP:
-
Amyloid precursor protein
- APS:
-
Adaptor protein with pleckstrin homology
- AS160:
-
TBC1 domain family member 4 (TBC1D4)
- Aβ:
-
Amyloid beta
- BAD:
-
BCL2 associated agonist of cell death
- C3G:
-
Cyanidin 3-glucoside
- CAP:
-
Cbl-associated protein
- Cbl:
-
Cas-Br-M ecotropic retroviral transforming sequence homologue
- CrK:
-
Adapter molecule CrK (proto-oncogene c-Crk)
- elk1:
-
ETS like-1 protein Elk-1
- eNOS:
-
Endothelial NO synthase
- ERK:
-
Extracellular regulated kinase
- ET-1:
-
Endothelin-1
- FFAs:
-
Free fatty acids
- FOXO:
-
Forkhead box O
- GAP:
-
GTPase-activating protein
- GEF:
-
Guanine nucleotide exchange factor
- GLUT4:
-
Glucose transporter type 4 (SLC2A4)
- GRB10:
-
Growth factor receptor-bound protein 10; insulin receptor-binding protein Grb-IR
- Grb2:
-
Growth factor receptor-bound protein 2
- GSK-3:
-
Glycogen synthase kinase 3
- GSK-3β kinase:
-
Glycogen synthase kinase 3 beta
- IDE:
-
Insulin degrading enzyme
- IKK:
-
IκB kinase
- IKK-β:
-
IκB kinase-β (inhibitor of nuclear transcription factor kappa-B kinase subunit beta)
- IR:
-
Insulin receptor
- IRS:
-
Insulin receptor substrate
- JNK:
-
c-jun N-terminal kinases
- L803-mts:
-
Selective peptide inhibitor of glycogen synthase kinase-3 (GSK-3)
- MAPK:
-
Mitogen-activated protein kinase
- MAP2K:
-
Mitogen-activated protein kinase kinase
- MAP3K:
-
Mitogen-activated protein kinase kinase kinase
- MCP-1:
-
Monocyte chemoattractant protein-1
- MEK:
-
MAPK and ERK kinases
- MIP-1:
-
Macrophage inflammatory protein 1
- Mnk:
-
Mitogen-activated protein kinase interacting protein kinase
- mTOR:
-
Mammalian target of rapamycin
- NF-kB:
-
Nuclear factor kappa-light-chain-enhancer of activated B cells
- NFT:
-
Neurofibrillary tangles
- NO:
-
Nitric oxide
- PDK-1:
-
Pyruvate dehydrogenase lipoamide kinase isozyme 1
- PI3K:
-
Phosphoinositide 3-kinase (phosphatidylinositol 3 kinase)
- PIP2:
-
Phosphatidylinositol 4,5-bisphosphate
- PIP3:
-
Phosphatidylinositol-trisphosphate
- PKC:
-
Protein kinase C
- POS:
-
Polycystic ovarian syndrome
- PPAR-y:
-
Thiazolidinedione family of Insulin-sensitizing peroxisome proliferator-activated receptor gamma
- PTEN:
-
Phosphatase and tensin homolog
- PTP1B:
-
Protein-tyrosine phosphatase 1B
- Raf:
-
Raf kinase family member (rapidly accelerated fibrosarcoma); RAF proto-oncogene serine/threonine-protein kinase
- Ras:
-
Ras GTPase
- ROS:
-
Reactive oxygen species
- RSK:
-
Ribosomal S6 kinase
- RTK:
-
Receptor tyrosine kinase
- S6K:
-
Ribosomal protein S6 kinase beta-1
- Shc:
-
Src-homology-2-containing protein
- SHP2:
-
Tyrosyl phosphatase
- SOS:
-
Guanyl nucleotide exchange factor son-of-sevenless
- STZ:
-
Streptozotocin
- T2DM:
-
Type 2 diabetes mellitus
- TC10:
-
Ras homologue gene family, member Q (ARHQ)
- TLR:
-
Toll-like receptor
- TLR4:
-
Toll-like receptor 4
- TNF:
-
Tumor necrosis factor
- TNF-α:
-
Tumor necrosis factor-α
- TSC:
-
Tuberous sclerosis 1
- TZD:
-
Thiazolidinediones
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Sosa, Y.J., Sosa, H.M., Epiter-Smith, V.A., Topaz, G.R., Stieglitz, K.A. (2020). Connecting Pathway Errors in the Insulin Signaling Cascade: The Molecular Link to Inflammation, Obesity, Cancer, and Alzheimer’s Disease. In: La Porta, F., Taft, C. (eds) Emerging Research in Science and Engineering Based on Advanced Experimental and Computational Strategies. Engineering Materials. Springer, Cham. https://doi.org/10.1007/978-3-030-31403-3_9
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