Heat shock proteins (HSPs) as chaperones for oncogenesis

Heat shock proteins (HSPs) are a conserved family of molecular chaperones that play a fundamental role in maintaining cellular homeostasis by facilitating protein folding, preventing aggregation, and mediating proteostasis under stress conditions. In cancer, HSPs are frequently overexpressed, contributing to tumor initiation, progression, metastasis, and therapeutic resistance. Their ability to stabilize oncoproteins, regulate apoptosis, and modulate immune responses makes them key players in tumorigenesis and promising therapeutic targets. This article comprehensively explores the classification and functional diversity of HSPs, highlighting their interactions with oncogenic pathways such as PI3K/AKT, MAPK, and p53. We discuss the dysregulation of prominent HSP families, including HSP27, HSP40, HSP60, HSP70, HSP90, and HSP110 across various cancer types, emphasizing their roles in promoting malignancy and modulating treatment responses. The chapter further elucidates how HSPs facilitate metabolic reprogramming in cancer cells, primarily through their interactions with key metabolic regulators, such as HIF-1α, c-Myc, and AKT, thereby sustaining the Warburg effect and promoting tumor cell survival. We examine their potential applications in precision oncology, including the development of HSP inhibitors, immunotherapies, and personalized treatment strategies. Additionally, we discuss novel therapeutic approaches, including chaperone-mediated autophagy modulation, HSP-based vaccines, and the integration of nanoparticle-mediated drug delivery systems. While HSP-targeted therapies offer significant promise, challenges such as drug resistance, toxicity, and compensatory upregulation of other chaperones remain formidable obstacles. Future research should focus on refining therapeutic selectivity, optimizing combination regimens, and utilizing advanced technologies, such as CRISPR-based gene editing and nanotechnology, to enhance treatment efficacy.