Journal of Medical Molecular Biology ›› 2025, Vol. 22 ›› Issue (4): 399-402.doi: 10.3870/j.issn.1672-8009.2025.04.015

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Effect of High-risk Human Papillomavirus L1 and L2 Proteins on Autophagy in Cervical Cancer #br#

  

  1. Department of Obstetrics and Gynecology, the Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
  • Online:2025-07-31 Published:2025-07-18

Abstract: Autophagy is a self-consumption mechanism used by cells to maintain homeostasis inthe body. Some findings suggest that high-risk human papillomavirus (HR-HPV) promotes cervical carcinogenesis by acting on host cell autophagy. HR-HPV can integrate the viral genome into the host DNA, which in turn infects the host cell. HR-HPV L1 and L2 proteins assist viral entry into cells and inhibit the autophagic process by activating the PI3K / AKT / mTOR signalling pathway through interactions with cell-surface receptors on the membrane of the target cell, resulting in the uninterrupted transport of viral particles into the cell. At the end stage of viral infection, HR-HPV L1 and L2 proteins are expressed in the cytoplasm and translocate to the nucleus, assisting viral evasion of immune surveillance by affecting autophagy. Although HPV prophylactic vaccines against HR-HPV L1 and L2 proteins are available, clarifying the specific regulation of autophagy in cervical cancer by HR-HPV L1 and L2 proteins may expand new ideas for cervical cancer prevention and treatment.

Key words:

high-risk human papillomavirus, L1 protein, L2 protein, cervical cancer, autophagy

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