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New Advances to Overcome Resistance in Tumor Therapy

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Oncology".

Deadline for manuscript submissions: 20 January 2025 | Viewed by 2763

Special Issue Editor

Special Issue Information

Dear Colleagues,

The incidence rate for various cancer types, including gastric cancer, colorectal cancer, lung cancer, ovary cancer, and breast cancer is the leading cause of death worldwide. The tumor therapeutic strategy has reduced mortality and recurrence; however, acquired resistance is still unclear. Multifaced mechanisms such as drug resistance, radioresitance, hypoxia, and growth factor deprivation are associated with a number of genes and signaling pathways that process the proliferation and cell death of cells. Reasons for resistance include autophagy, ER stress, DNA damage, endocytosis, oxidants, epithelial mesenchyme, epigenetic modification, pathway activation, cancer-related fibroblasts, extracellular matrix (ECM), exosomes, inflammatory immune cells, and so on. To overcome diverse chemoresistance, the relationship between the cell signaling pathway and resistant cancer models is important in studying the mechanism for tumor survival and cell death. Novel or famous antitumor reagents against various resistant cancer models represent a new, advanced strategy to overcome resistance on cancer therapy, but the underlying mechanisms are not fully clarified. This Special Issue of IJMS, “New Advances to Overcome Resistance in Tumor Therapy” will focus on new advanced therapeutic strategies to overcome chemoresistance in various resistant cancer models. Moreover, we will suggest progress in the understanding of various resistance cancer types and focus on therapeutic approaches to develop new treatments to overcome chemoresistance.

Dr. Tae Woo Kim
Guest Editor

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Keywords

  • radiation
  • hypoxia
  • growth factor deprivation
  • apoptosis
  • autophagy
  • epigenetics
  • cell death
  • cell survival
  • resistance

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Published Papers (1 paper)

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Research

15 pages, 1643 KiB  
Article
Targeting ER Stress with Saikosaponin A to Overcome Resistance under Radiation in Gastric Cancer Cells
by Tae Woo Kim
Int. J. Mol. Sci. 2023, 24(6), 5661; https://doi.org/10.3390/ijms24065661 - 16 Mar 2023
Cited by 7 | Viewed by 2323
Abstract
Saikosaponin A is a triterpene saponin and a potentially bioactive compound derived from Bupleurum falcatum L. However, the molecular mechanisms and effects of saikosaponin A in gastric cancer remain unknown. In the present study, I evaluated the effects of saikosaponin A on cell [...] Read more.
Saikosaponin A is a triterpene saponin and a potentially bioactive compound derived from Bupleurum falcatum L. However, the molecular mechanisms and effects of saikosaponin A in gastric cancer remain unknown. In the present study, I evaluated the effects of saikosaponin A on cell death and endoplasmic reticulum stress via calcium and reactive oxygen species release. Targeting reactive oxygen species with diphenyleneiodonium and N-acetylcysteine inhibited cell death and protein kinase RNA-like ER kinase signaling pathway by down-regulating Nox4 and inducing glucose-regulated protein 78 exosomes. Furthermore, saikosaponin A caused a synergistic inhibitory effect of the epithelial mesenchymal transition phenomenon, indicating the reversible phenotype modulation by epithelial cells under radiation exposure in radiation-resistant gastric cancer cells. These results suggest that saikosaponin A-mediated calcium and reactive oxygen species-induced endoplasmic reticulum stress overcome radio-resistance and induce cell death under radiation in gastric cancer cells. Therefore, saikosaponin A in combination with radiation may be a potential strategy for gastric cancer therapy. Full article
(This article belongs to the Special Issue New Advances to Overcome Resistance in Tumor Therapy)
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