Study on chemical composition and evaluation of anti-cancer effect of stem and leaves of Stephania dielsiana YC Wu - 1


MINISTRY OF EDUCATION AND TRAINING MINISTRY OF HEALTH

INSTITUTE OF MEDICINAL MATERIALS


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TRAN THI THU HIEN


Study on chemical composition and evaluation of anti-cancer effect of stem and leaves of Stephania dielsiana YC Wu - 1

RESEARCH ON CHEMICAL COMPOSITION AND EVALUATION OF ANTI-CANCER EFFECTS OF THE STEMS AND LEAVES OF THE CƯƠM PLANT

( Stephania dielsiana YC Wu)


DOCTORAL THESIS IN PHARMACY


HANOI, 2022

MINISTRY OF EDUCATION AND TRAINING MINISTRY OF HEALTH

INSTITUTE OF MEDICINAL MATERIALS


TRAN THI THU HIEN


RESEARCH ON CHEMICAL COMPOSITION AND EVALUATION OF ANTI-CANCER EFFECTS OF THE STEMS AND LEAVES OF THE CƯƠM PLANT

( Stephania dielsiana YC Wu)


DOCTORAL THESIS IN PHARMACY

MAJORITY: MEDICINAL HERBS - TRADITIONAL PHARMACY CODE: 9720206


Scientific supervisor: 1. Dr. Le Thi Kim Van

2. Associate Professor, Dr. Nguyen Quoc Huy


HANOI, 2022

COMMITMENT


I hereby declare that this is my own research work under the guidance of Dr. Le Thi Kim Van and Associate Professor Dr. Nguyen Quoc Huy. The data and results presented in this thesis are honest and have never been published in any other research work.

Author


Tran Thi Thu Hien

ACKNOWLEDGEMENTS


During the process of researching and completing this thesis, I received a lot of valuable help from teachers, scientists in many fields, colleagues, friends and family.

First of all, I would like to express my respect and deep gratitude to Dr. Le Thi Kim Van and Associate Professor Dr. Nguyen Quoc Huy for their direct guidance and wholehearted instruction throughout my study and scientific research.

I would like to sincerely thank the Board of Directors, Faculties, Departments, teachers and colleagues at the Institute of Medicinal Materials; the Experimental Oncology Research Group, Department of Cell Biology, Faculty of Biology, University of Science, Vietnam National University, Hanoi; Vinmec Stem Cell and Gene Technology Research Institute, Institute of Marine Biochemistry under the Vietnam Academy of Science and Technology for helping and creating favorable conditions to help me throughout the research process.

I would like to express my sincere thanks to Associate Professor Dr. Nguyen Thuong Dong, Associate Professor Dr. Phan Minh Giang, Associate Professor Dr. Hoang Viet Dung, Associate Professor Dr. Bui Thanh Tung, Dr. Bui Huu Tai, Dr. Nguyen Van Tai, Dr. Le Thanh Nghi, Dr. Le Thi Xoan, Dr. Nguyen Thi Ha, Dr. Nguyen Tuan Hiep for their valuable contributions to help me in the process of experimental research and thesis completion.

I would like to sincerely thank the leaders of the Vietnam Academy of Traditional Medicine and my colleagues at the Vietnam Academy of Traditional Medicine, where I work, for their encouragement and favorable conditions for me to complete this thesis.

Finally, I would like to express my deepest gratitude to my beloved family members; thank you to my close friends who have given me their love, encouragement and help over the past time.

This thesis is a part of the research of the Ministry of Health-level science and technology task managed by the Department of Science, Technology and Training - Ministry of Health (according to Decision No. 2721/QD-BYT signed on June 28, 2019 and Contract No. 09/HD-K2DT signed on September 18, 2019).

Thank you very much for all this valuable help!

INDEX


LIST OF ABBREVIATIONS LIST OF TABLES

LIST OF IMAGES

PROBLEM STATEMENT 1

CHAPTER 1. OVERVIEW 3

1.1. OVERVIEW OF PLANTS 3

1.1.1. Classification position 3

1.1.2. Botanical characteristics of the tuber species 3

1.1.3. Distribution of the species of tuber 4

1.2. CHEMICAL COMPOSITION OF THE PLANT CÚDÔM 6

1.2.1. Alkaloid 6

1.2.2. Other groups of compounds 11

1.3. BIOLOGICAL EFFECTS, USES AND TOXICITY OF DOM 13

1.3.1. Biological effects 13

1.3.2. Toxicity of the tuber of the plant 21

1.3.3. Uses 22

1.4. MOLECULAR TARGETS IN CANCER DRUG DEVELOPMENT

................................................................ ................................................................ ................................ 23

1.4.1. Overview of some molecular targets in cancer drug research and development 23

1.4.2. Aurora kinase and its role in cancer 26

CHAPTER 2. RESEARCH SUBJECTS AND METHODS 37

2.1. SUBJECT OF RESEARCH 37

2.1.1. Research materials 37

2.1.2. Some experimental cancer cell lines 37

2.1.3. Chemicals, solvents 38

2.1.4. Research machinery, equipment and tools 39

2.2. RESEARCH LOCATION 40

2.3. RESEARCH CONTENT 41

2.4. RESEARCH METHODS 41

2.4.1. Extraction, isolation and structure determination of some compounds from the stem and leaves of the plant 41

2.4.2. Initial research on the development of isolation methods and quantitative methods to monitor oxostephanin content in medicinal herbs according to harvesting time 44

2.4.3. Evaluation of cytotoxic effects of some isolated compounds and initial study of anticancer mechanism of oxostephanin 48

CHAPTER 3. RESEARCH RESULTS 61

3.1. EXTRACTION, ISOLATION AND STRUCTURAL DETERMINATION OF SOME COMPOUNDS FROM THE STEMS AND LEAVES OF THE PLANT CƯƠM 61

3.1.1. Extraction and isolation of some compounds from the stem and leaves of the plant 61

3.1.2. Determination of chemical structures of isolated compounds 62

3.2. INITIAL RESEARCH ON DEVELOPING ISOLATION METHODS AND QUANTITATIVE METHODS TO MONITOR OXOSTEPHANIN CONTENT IN MEDICINAL HERBS ACCORDING TO HARVESTING TIME 84

3.2.1. Isolation and preliminary evaluation of the purity of oxostephanin 84

3.2.2. Development and validation of a method for quantifying oxostephanin in the stems and leaves of the plant Dom 88

3.2.3. Evaluation of changes in oxostephanin content according to harvesting time. 98

3.3. EVALUATION OF THE CELLULAR TOXIC EFFECTS OF SOME ISOLATED COMPOUNDS AND INITIAL RESEARCH ON THE ANTI-CANCER MECHANISM OF OXOSTEPHANIN 99

3.3.1. Evaluation of cytotoxic effects of some isolated compounds 99

3.3.2. Study on the cytotoxic mechanism of oxostephanin 105

CHAPTER 4. DISCUSSION 123

4.1. ON EXTRACTION, ISOLATION AND STRUCTURAL DETERMINATION OF COMPOUNDS FROM THE STEMS AND LEAVES OF THE PLANT CƯƠM 123

4.2. ON THE INITIAL RESEARCH ON THE DEVELOPMENT OF ISOLATION METHODS AND QUANTITATIVE METHODS TO MONITOR OXOSTEPHANIN CONTENT IN MEDICINAL HERBS ACCORDING TO HARVESTING TIME 130

4.2.1. On the isolation and preliminary assessment of the purity of oxostephanin 130

4.2.2. On the construction and evaluation of quantitative methods 133

4.2.3. On the change in oxostephanin content according to harvesting time 135

4.3. ON THE EVALUATION OF THE CELLULAR TOXIC EFFECTS OF SOME ISOLATED COMPOUNDS AND THE INITIAL RESEARCH ON THE ANTI-CANCER MECHANISM OF OXOSTEPHANIN 138

4.3.1. Cytotoxic effects of some isolated compounds 138

4.3.2. Mechanism of cytotoxic action of oxostephanin 142

4.4. ON NEW CONTRIBUTIONS OF THE THESIS 146

CONCLUSION AND RECOMMENDATIONS 148

LIST OF PUBLISHED ARTICLES REFERENCES

LIST OF ABBREVIATIONS

Abbreviations English Vietnamese

1 H-NMR Proton Nuclear Magnetic Resonance Spectroscopy

13 C-NMR Carbon-13 Nuclear Magnetic

Resonance Spectroscopy

Proton nuclear magnetic resonance spectroscopy

Carbon 13 nuclear magnetic resonance spectroscopy

[α] D Specific rotation angle

AchE Acetycholinesterase

BchE Butyrylcholinesterase

BuOH Butanol

cDNA Complementary Deoxyribonucleic Acide

Deoxyribonucleic acid supplement

CFU Colony‐forming units CFU-EC Colony Units of Endothelial Cells

endothelial cells

CFU-F Colony Units of Fibroblasts

fibroblast

CI Cell Index Cell Index

COSY 1H–1H Correlation Spectroscopy 1 H- 1 H Correlation Spectroscopy DD Solution

Vietnamese Pharmacopoeia

DEPT Distortionless Enhancement by Polarization Transfer

DMEM Dulbecco's Modified Eagle Medium

DMSO Dimethyl sulfoxide (CH₃)₂SO

EBM Eagle's Basal Medium

EDTA Ethylene Diamine Tetraacetic Acide

ESI-MS Electrospray Ionization - Mass Spectrometry

EtOAc Ethyl acetate

DEPT spectrum


Electron spray ionization mass spectrometry

EtOH Ethanol

FBS Fetal Bovine Serum

FGF-2 Fibroblast Growth Factor‐2 Fibroblast Growth Factor

fiber-2

H358 Epithelial Cancer Cell Line

alveolar bronchial

HeLa Human cervical carcinoma Cervical cancer cells

People

HepG2 Human hepatocellular carcinoma hFBs Human dermal fibroblasts

People

HGF Hepatocyte growth factor Hepatocyte growth factor

HMBC Heteronuclear Multiple Bond Connectivity

HPLC High Performance Liquid Chromatography

HR-ESI-MS High-Resolution Electron Spray

Ionization Mass Spectrometry

HSQC Heteronuclear Single Quantum Correlation Spectroscopy

hUVECs Human Umbilical Vein Endothelial Cells

Multiple bond heteronuclear correlation spectrum

High performance liquid chromatography


High resolution electrospray ionization mass spectrometry

Heteronuclear interaction spectrum across a bond

Human umbilical vein endothelial cells

KHV Microscope

Molecular Weight

IC 50 Half-maximal inhibitory concentration

Maximum inhibitory concentration 50%

J Coherence constant (unit is Hz)

LD 50 Median Lethal Dose 50% Lethal Dose

MCF7 Human breast carcinoma Adenocarcinoma cells

multidrug resistant breast

MDA-MB-231 Hormone-independent breast

cancer cell line

MDA Hormone-independent breast cancer

Hormone-independent breast cancer cell lines

Hormone-independent breast cancer

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