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KRAS-induced actin-interacting protein: a potent target for obesity, diabetes and cancer
Takahiro Fujimoto1, Senji Shirasawa
1Department of Cell Biology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
Abstract:
KRAS-induced actin-interacting protein (KRAP) was originally identified as one of the genes deregulated in colorectal cancer. KRAP encodes a cytoplasmic protein associated with filamentous-actin (F-actin), and the amino acid sequences are highly conserved among KRAP orthologues from fish to mammalian species. We demonstrated that KRAP-deficient mice show altered whole-body energy metabolism and resistance to diet-induced obesity and diabetes. Although the precise mechanisms underlying the metabolic phenotypes in the KRAP-deficient mice remain unclear, KRAP is considered to be a target for metabolism-related diseases. Furthermore, several groups have reported that KRAP is a cancer-associated gene. Further studies on the molecular functions of KRAP in physiological tissues could provide a better understanding of various diseases, and opportunities for intervention in various human diseases. In this review, we summarize the current understanding of KRAP and the roles that it plays in a variety of diseases.
Insights
KRAS-induced actin-interacting protein (KRAP) deficiency alters energy metabolism, conferring resistance to obesity and diabetes. KRAP is implicated in both cancer and metabolic diseases, suggesting therapeutic potential.
Area of Science:
- Molecular Biology
- Metabolic Research
- Oncology
Background:
- KRAS-induced actin-interacting protein (KRAP) is a conserved cytoplasmic protein linked to filamentous-actin (F-actin).
- KRAP was initially identified as a deregulated gene in colorectal cancer.
- Its orthologues show high sequence conservation across species.
Purpose of the Study:
- To review the current understanding of KRAP's molecular functions.
- To explore KRAP's roles in various physiological processes and diseases.
- To highlight KRAP as a potential target for metabolic and cancer-related diseases.
Main Methods:
- Review of existing literature on KRAP.
- Analysis of studies on KRAP-deficient mouse models.
- Examination of KRAP's association with cancer and metabolic pathways.
Main Results:
- KRAP-deficient mice exhibit altered whole-body energy metabolism.
- These mice display resistance to diet-induced obesity and diabetes.
- KRAP is recognized as a cancer-associated gene.
Conclusions:
- KRAP plays a significant role in energy metabolism and disease pathogenesis.
- Further research into KRAP's functions can offer insights into disease mechanisms.
- KRAP represents a promising therapeutic target for metabolic disorders and cancer.
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