Inhibitory effects of gallic acid in colon cancer cells

Colorectal cancer is a malignant tumor arising from the inner wall of the large intestine, which is the third most common type of cancer. American Cancer Society estimates about 93,090 new cases and 49,700 deaths due to colorectal cancer in the United States since 2015. Diet is thought to have a maj...

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Main Author: Subramanian, Aruna Priyadharshni
Format: Thesis
Language:English
Published: 2016
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Online Access:http://eprints.utm.my/id/eprint/78485/1/ArunaPriyadharshniSubramanianMFBME2016.pdf
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spelling my-utm-ep.784852018-08-26T11:56:31Z Inhibitory effects of gallic acid in colon cancer cells 2016-02 Subramanian, Aruna Priyadharshni QH301 Biology Colorectal cancer is a malignant tumor arising from the inner wall of the large intestine, which is the third most common type of cancer. American Cancer Society estimates about 93,090 new cases and 49,700 deaths due to colorectal cancer in the United States since 2015. Diet is thought to have a major role in the etiology of colorectal cancer. Scientists explore the phenolic phytochemicals found in various food substances for colorectal cancer treatment and prevention. In this research, a dietderived phenolic compound Gallic Acid (GA) was explored for its antiproliferative action against the colon cancer cell line HCT-15. MTT assay results illustrated that GA has an inhibitory effect on HCT-15 with IC50 value of 740 μmol/L. A timedependent inhibition of colony formation was evident with GA treatment as the maximum number of colonies formed was about 110 after 48 h. Cell cycle arrest was evident from the accumulation of GA treated HCT-15 cells at sub-G1 phase (0.98±1.03 vs 58.01±2.05) with increasing exposure time. Flow cytometric analysis of GA treated HCT-15 cells depicted various events associated with apoptosis like lipid layer breakage and reduction in mitochondrial membrane potential apart from an increase in the generation of ROS, which were in a time dependent manner. SEM and photomicrograph images of the GA-treated cells displayed membrane blebbing and cell shrinking characteristics of apoptosis. Further, the Yo-Pro-1 staining of GA treated cells confirmed apoptosis in a time dependent manner. These results propel the role of GA as a putative agent in colon cancer treatment. However, further experiments in preclinical and clinical settings are required to promote GA as a likely candidate for chemotherapy of colon cancer. 2016-02 Thesis http://eprints.utm.my/id/eprint/78485/ http://eprints.utm.my/id/eprint/78485/1/ArunaPriyadharshniSubramanianMFBME2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:110543 phd doctoral Universiti Teknologi Malaysia, Faculty of Biosciences and Medical Engineering Faculty of Biosciences and Medical Engineering
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic QH301 Biology
spellingShingle QH301 Biology
Subramanian, Aruna Priyadharshni
Inhibitory effects of gallic acid in colon cancer cells
description Colorectal cancer is a malignant tumor arising from the inner wall of the large intestine, which is the third most common type of cancer. American Cancer Society estimates about 93,090 new cases and 49,700 deaths due to colorectal cancer in the United States since 2015. Diet is thought to have a major role in the etiology of colorectal cancer. Scientists explore the phenolic phytochemicals found in various food substances for colorectal cancer treatment and prevention. In this research, a dietderived phenolic compound Gallic Acid (GA) was explored for its antiproliferative action against the colon cancer cell line HCT-15. MTT assay results illustrated that GA has an inhibitory effect on HCT-15 with IC50 value of 740 μmol/L. A timedependent inhibition of colony formation was evident with GA treatment as the maximum number of colonies formed was about 110 after 48 h. Cell cycle arrest was evident from the accumulation of GA treated HCT-15 cells at sub-G1 phase (0.98±1.03 vs 58.01±2.05) with increasing exposure time. Flow cytometric analysis of GA treated HCT-15 cells depicted various events associated with apoptosis like lipid layer breakage and reduction in mitochondrial membrane potential apart from an increase in the generation of ROS, which were in a time dependent manner. SEM and photomicrograph images of the GA-treated cells displayed membrane blebbing and cell shrinking characteristics of apoptosis. Further, the Yo-Pro-1 staining of GA treated cells confirmed apoptosis in a time dependent manner. These results propel the role of GA as a putative agent in colon cancer treatment. However, further experiments in preclinical and clinical settings are required to promote GA as a likely candidate for chemotherapy of colon cancer.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Subramanian, Aruna Priyadharshni
author_facet Subramanian, Aruna Priyadharshni
author_sort Subramanian, Aruna Priyadharshni
title Inhibitory effects of gallic acid in colon cancer cells
title_short Inhibitory effects of gallic acid in colon cancer cells
title_full Inhibitory effects of gallic acid in colon cancer cells
title_fullStr Inhibitory effects of gallic acid in colon cancer cells
title_full_unstemmed Inhibitory effects of gallic acid in colon cancer cells
title_sort inhibitory effects of gallic acid in colon cancer cells
granting_institution Universiti Teknologi Malaysia, Faculty of Biosciences and Medical Engineering
granting_department Faculty of Biosciences and Medical Engineering
publishDate 2016
url http://eprints.utm.my/id/eprint/78485/1/ArunaPriyadharshniSubramanianMFBME2016.pdf
_version_ 1747817996309495808