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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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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.
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Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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HSP27 Promotes Cutaneous Squamous Cell Carcinoma Progression by Inhibiting Ferroptosis.

Yu-Xin Jiang1, Jing Xu2, Zi-Yue Wang3

  • 1Department of Dermatology and Plastic Surgery, Bishan Hospital of Chongqing Medical University, Chongqing, China.

Biofactors (Oxford, England)
|January 3, 2026
PubMed
Summary

Heat shock protein 27 (HSP27) promotes cutaneous squamous cell carcinoma (CSCC) growth by blocking ferroptosis, a cell death pathway. Inhibiting HSP27 enhances ferroptosis, offering a potential new treatment strategy for CSCC.

Keywords:
HSP27cutaneous squamous cell carcinoma (CSCC)ferroptosis

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RNA Interference-based Investigation of the Function of Heat Shock Protein 27 during Corneal Epithelial Wound Healing
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Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Cutaneous squamous cell carcinoma (CSCC) is a common skin cancer.
  • Ferroptosis, an iron-dependent cell death, plays a role in various cancers.
  • Heat shock protein 27 (HSP27), encoded by HSPB1, is implicated in ferroptosis regulation, but its specific role in CSCC is unclear.

Purpose of the Study:

  • To investigate the mechanism and function of HSP27 in regulating ferroptosis in CSCC.
  • To determine if HSP27 can be a therapeutic target for CSCC treatment.

Main Methods:

  • CSCC cell lines were manipulated using lentivirus-mediated HSPB1-shRNA (for downregulation) or overexpressed HSPB1 (for upregulation).
  • In vivo studies utilized xenograft mouse models.
  • Ferroptosis inhibitors (e.g., Ferrostatin-1) and inducers (e.g., Erastin) were employed to validate findings.

Main Results:

  • Downregulation of HSP27 inhibited CSCC cell proliferation, migration, and invasion.
  • Upregulation of HSP27 demonstrated opposite effects on CSCC cell behavior.
  • In vivo, HSP27 downregulation reduced tumor volume and weight.
  • HSP27 was found to inhibit ferroptosis, thereby promoting CSCC growth.
  • Erastin-induced ferroptosis was enhanced by HSP27 downregulation and reversed by Ferrostatin-1.

Conclusions:

  • HSP27 promotes CSCC cell and tumor growth by suppressing ferroptosis.
  • Targeting HSP27 to modulate ferroptosis presents a promising therapeutic strategy for CSCC.