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Therapeutic Potential of Autophagy Modulation in Cholangiocarcinoma
1Ability Pharmaceuticals, SL, Cerdanyola del Vallés, 08290 Barcelona, Spain.
Abstract:
Autophagy is a multistep catabolic process through which misfolded, aggregated or mutated proteins and damaged organelles are internalized in membrane vesicles called autophagosomes and ultimately fused to lysosomes for degradation of sequestered components. The multistep nature of the process offers multiple regulation points prone to be deregulated and cause different human diseases but also offers multiple targetable points for designing therapeutic strategies. Cancer cells have evolved to use autophagy as an adaptive mechanism to survive under extremely stressful conditions within the tumor microenvironment, but also to increase invasiveness and resistance to anticancer drugs such as chemotherapy. This review collects clinical evidence of autophagy deregulation during cholangiocarcinogenesis together with preclinical reports evaluating compounds that modulate autophagy to induce cholangiocarcinoma (CCA) cell death. Altogether, experimental data suggest an impairment of autophagy during initial steps of CCA development and increased expression of autophagy markers on established tumors and in invasive phenotypes. Preclinical efficacy of autophagy modulators promoting CCA cell death, reducing invasiveness capacity and resensitizing CCA cells to chemotherapy open novel therapeutic avenues to design more specific and efficient strategies to treat this aggressive cancer.
Insights
Autophagy, a cellular process, is deregulated in cholangiocarcinoma (CCA). Modulating autophagy shows promise for treating this aggressive cancer by inducing cell death and overcoming drug resistance.
Area of Science:
- Cell Biology
- Oncology
- Biochemistry
Background:
- Autophagy is a fundamental catabolic process for cellular homeostasis, involving the degradation of damaged components via autophagosomes and lysosomes.
- Dysregulation of autophagy is implicated in various human diseases, presenting therapeutic targets.
- Cancer cells, including cholangiocarcinoma (CCA), exploit autophagy for survival, invasiveness, and resistance to chemotherapy.
Purpose of the Study:
- To review clinical and preclinical evidence on autophagy deregulation in cholangiocarcinogenesis.
- To evaluate the therapeutic potential of autophagy modulators in treating cholangiocarcinoma.
Main Methods:
- Collection and synthesis of clinical data on autophagy alterations in CCA development.
- Analysis of preclinical studies investigating compounds that modulate autophagy for CCA treatment.
Main Results:
- Autophagy appears impaired in early CCA stages but upregulated in established tumors and invasive phenotypes.
- Preclinical studies demonstrate that autophagy modulators can induce CCA cell death.
- Modulating autophagy shows potential in reducing CCA invasiveness and resensitizing cells to chemotherapy.
Conclusions:
- Autophagy plays a complex role in cholangiocarcinoma progression, with distinct roles in early and late stages.
- Targeting autophagy presents a promising therapeutic strategy for cholangiocarcinoma, potentially improving treatment efficacy and overcoming resistance.
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