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254580

Role of autophagy induced by anthocyanins in protection of DNA damages caused by UVB irradiation in HepG2 cells

Article

Last updated: 28 Dec 2024

Subjects

-

Tags

Zoology and Entomology

Abstract

DNA-protein cross-links (DPCs) and Thymidine dimer (Td) are special types of DNA damages that formed when DNA exposed to many inducers as UV irradiations. Anthocyanins are members of the flavonoid group of phytochemicals found in many plants including Hibiscus sabdariffa. It was reported that anthocyanins protect DNA from UV-induced damages. Here we investigate the role of autophagy induced by anthocyanins in protection of UVB-induced DPCs and Td in HepG2 cells. Cells were treated either with anthocyanins (anth), Rapamycin (Rap) or combination of anth and Bafilomycin A1 (Baf A1) or anth and 3-methyladenine (3Ma) for 24 h and then subjected to 0.36 J/cm2 UVB irradiation. Then DNA extraction for DPCs and Td investigation was carried out or cells were treated with Acridine orange (AO) for examination of autophagy. The results reveled that anth induces autophagy formation as detected by AO pH dependent green to red (G/R) color shifting. To investigate the role of anth-induced autophagy on DPCs and Td formation after UVB exposure, electrophoresis of protein covalently linked to DNA or Td dot plot analysis of DNA were carried out. It was found that anth treated cells have reduced DPCs and Td compared with the anth untreated cells. Treatment of cells with autophagy inhibitors Baf A1 or 3Ma together with anth significantly increased the DPCs and Td formation compared with anth treated cells. Also, Rap treatment alone protects cells from DPCs and Td formation which confirm the role of autophagy in protection of cells from UVB-induced DPCs and Td formation.

DOI

10.21608/aunj.2022.139022.1013

Keywords

Hibiscus Sabdariffa, DNA protein crosslink, thymidine dimer, UV Radiation

Authors

First Name

Abo bakr

Last Name

Abdel shakor

MiddleName

Mohamed

Affiliation

Zoology dept., faculty of science, Assiut univ., Assiut, Egypt

Email

abobakr70@aun.edu.eg

City

Assiut

Orcid

0000-0003-2792-9066

First Name

Alshaimaa

Last Name

Alghriany

MiddleName

Ahmed

Affiliation

Zoology Department, Faculty of Science, Assiut University, Egypt

Email

elshimaa.abdallah@science.aun.edu.eg

City

Assiut

Orcid

0000-0003-0970-3653

First Name

Hanem

Last Name

Abdel twab

MiddleName

Sad

Affiliation

Zoology dept, faculty of science, Assiut univ., Assiut, Egypt

Email

hanem.jahen@science.aun.edu.eg

City

-

Orcid

-

First Name

Eman

Last Name

Ahmed

MiddleName

-

Affiliation

Zoology dept, faculty of science, Assiut Univ., Assiut, Egypt

Email

emanahmed@science.aun.edu.eg

City

Assiut

Orcid

-

Volume

1

Article Issue

1

Related Issue

36161

Issue Date

2022-08-01

Receive Date

2022-05-23

Publish Date

2022-08-01

Page Start

95

Page End

108

Print ISSN

2812-5029

Online ISSN

2812-5037

Link

https://aunj.journals.ekb.eg/article_254580.html

Detail API

https://aunj.journals.ekb.eg/service?article_code=254580

Order

254,580

Type

Novel Research Articles

Type Code

2,242

Publication Type

Journal

Publication Title

Assiut University Journal of Multidisciplinary Scientific Research

Publication Link

https://aunj.journals.ekb.eg/

MainTitle

Role of autophagy induced by anthocyanins in protection of DNA damages caused by UVB irradiation in HepG2 cells

Details

Type

Article

Created At

23 Jan 2023