J 2023

New findings on the action of hypericin in hypoxic cancer cells with a focus on the modulation of side population cells

BUĽKOVÁ, Viktória, Jana VARGOVÁ, Marián BABINČÁK, Rastislav JENDŽELOVSKÝ, Zbyněk ZDRÁHAL et. al.

Basic information

Original name

New findings on the action of hypericin in hypoxic cancer cells with a focus on the modulation of side population cells

Authors

BUĽKOVÁ, Viktória (703 Slovakia), Jana VARGOVÁ (703 Slovakia), Marián BABINČÁK (703 Slovakia), Rastislav JENDŽELOVSKÝ (703 Slovakia), Zbyněk ZDRÁHAL (203 Czech Republic, guarantor, belonging to the institution), Pavel ROUDNICKÝ (203 Czech Republic, belonging to the institution), Ján KOŠUTH and Peter FEDOROČKO

Edition

Biomedicine and Pharmacotherapy, Elsevier, 2023, 0753-3322

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30104 Pharmacology and pharmacy

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 7.500 in 2022

RIV identification code

RIV/00216224:14740/23:00131566

Organization unit

Central European Institute of Technology

UT WoS

000998460000001

Keywords in English

Hypericin; Hypoxia; Breast cancer resistance protein; Side population; ECM reorganization; Proteomics

Tags

Tags

International impact, Reviewed
Změněno: 9/10/2024 13:27, Ing. Martina Blahová

Abstract

V originále

The presence of key hypoxia regulators, namely, hypoxia-inducible factor (HIF)-1 alpha or HIF-2 alpha, in tumors is associated with poor patient prognosis. Hypoxia massively activates several genes, including the one encoding the BCRP transporter that proffers multidrug resistance to cancer cells through the xenobiotic efflux and is a determinant of the side population (SP) associated with cancer stem-like phenotypes. As natural medicine comes to the fore, it is instinctive to look for natural agents possessing powerful features against cancer resistance. Hypericin, a pleiotropic agent found in Hypericum plants, is a good example as it is a BCRP substrate and po-tential inhibitor, and an SP and HIF modulator. Here, we showed that hypericin efficiently accumulated in hypoxic cancer cells, degraded HIF-1/2 alpha, and decreased BCRP efflux together with hypoxia, thus diminishing the SP population. On the contrary, this seemingly favorable result was accompanied by the stimulated migration of this minor population that preserved the SP phenotype. Because hypoxia unexpectedly decreased the BCRP level and SP fraction, we compared the SP and non-SP proteomes and their changes under hypoxia in the A549 cell line. We identified differences among protein groups connected to the epithelial-mesenchymal transition, although major changes were related to hypoxia, as the upregulation of many proteins, including serpin E1, PLOD2 and LOXL2, that ultimately contribute to the initiation of the metastatic cascade was detected. Alto-gether, this study helps in clarifying the innate and hypoxia-triggered resistance of cancer cells and highlights the ambivalent role of natural agents in the biology of these cells.

Links

823839, interní kód MU
Name: European Proteomics Infrastructure Consortium providing Access (Acronym: EPIC-XS)
Investor: European Union, RI Research Infrastructures (Excellent Science)
90242, large research infrastructures
Name: CIISB III