Volume 46, Issue 12 e14487
ORIGINAL ARTICLE

Validation of antioxidant, antiproliferative, and in vitro anti-rheumatoid arthritis activities of epigallo-catechin-rich bioactive fraction from Camellia sinensis var. assamica, Assam variety white tea, and its comparative evaluation with green tea fraction

Sanchaita Misra

Sanchaita Misra

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

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Abu Md Ashif Ikbal

Abu Md Ashif Ikbal

Department of Pharmaceutical Sciences, Drug Discovery Research Laboratory, Assam University, Silchar, India

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Dipanjan Bhattacharjee

Dipanjan Bhattacharjee

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

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Minakshi Hore

Minakshi Hore

Department of Pharmaceutical Sciences, Drug Discovery Research Laboratory, Assam University, Silchar, India

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Snehasis Mishra

Snehasis Mishra

Indian Institute of Chemical Biology, Kolkata, India

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Sankha Karmakar

Sankha Karmakar

Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, India

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Alakendu Ghosh

Alakendu Ghosh

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

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Ravurushanmuk Srinivas

Ravurushanmuk Srinivas

Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, India

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Abhik Das

Abhik Das

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

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Shivankar Agarwal

Shivankar Agarwal

ICMR-National Institute of Traditional Medicine, Belagavi, India

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Krishna Das Saha

Krishna Das Saha

Indian Institute of Chemical Biology, Kolkata, India

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Prashant Bhardwaj

Prashant Bhardwaj

ICMR-Virus Unit (Presently ICMR-National Institute of Cholera & Enteric Diseases), Kolkata, India

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Ishvarlal Bhudarbhai Ubhadia

Ishvarlal Bhudarbhai Ubhadia

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

Rosekandi Tea Estate, Grant Pt I, Assam, India

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Parasar Ghosh

Parasar Ghosh

Department of Clinical immunology and Rheumatology, Institute of Post-Graduate Medical Education & Research, Kolkata, India

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Sirshendu De

Sirshendu De

Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, India

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Onkar Nath Tiwari

Corresponding Author

Onkar Nath Tiwari

Department of Computer Science and Engineering, National Institute of Technology, Agartala, India

Correspondence

Onkar Nath Tiwari, Division of Microbiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.

Email: [email protected]

Debprasad Chattopadhyay, NSHM Knowledge Campus, 124, 60, Basanta Lal Saha Rd, Tara Park, Kolkata 700053, India.

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Partha Palit, Department of Pharmaceutical Sciences, Assam University, Silchar, Assam 788011, India.

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Debprasad Chattopadhyay

Corresponding Author

Debprasad Chattopadhyay

ICMR-National Institute of Traditional Medicine, Belagavi, India

Centre for Conservation and Utilisation of Blue Green Algae (CCUBGA), Division of Microbiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India

NSHM Knowledge Campus, Kolkata, India

Correspondence

Onkar Nath Tiwari, Division of Microbiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.

Email: [email protected]

Debprasad Chattopadhyay, NSHM Knowledge Campus, 124, 60, Basanta Lal Saha Rd, Tara Park, Kolkata 700053, India.

Email: [email protected]

Partha Palit, Department of Pharmaceutical Sciences, Assam University, Silchar, Assam 788011, India.

Email: [email protected]

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Partha Palit

Corresponding Author

Partha Palit

Department of Pharmaceutical Sciences, Drug Discovery Research Laboratory, Assam University, Silchar, India

Correspondence

Onkar Nath Tiwari, Division of Microbiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.

Email: [email protected]

Debprasad Chattopadhyay, NSHM Knowledge Campus, 124, 60, Basanta Lal Saha Rd, Tara Park, Kolkata 700053, India.

Email: [email protected]

Partha Palit, Department of Pharmaceutical Sciences, Assam University, Silchar, Assam 788011, India.

Email: [email protected]

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First published: 30 October 2022
Citations: 14

Sanchaita Misra and Abu Md Ashif Ikbal equally contributed in this manuscript.

Abstract

The epigallocatechin-rich polyphenolic fraction of Assam variety white tea, traditionally used for the management of diverse inflammatory ailments and health drink, was investigated through eco-friendly green aqueous extraction, TLC, and HPLC characterization, phytochemical screening, in vitro DPPH assay, anti-proteinase, MTT assay on synovial fibroblast and colon cancer cells, apoptotic FACS analysis, cytokine ELISA, p-STAT3 western blotting, and in silico docking analysis. HPLC-TLC standardized white tea fraction (WT-F) rendered higher extractive-yield (21%, w/w), than green tea fraction(GT-F) (12%, w/w). WT-F containing flavonoids and non-hydrolysable polyphenols showed better antioxidant activity, rather than equivalent GT-F. WT-F demonstrated remarkable anti-rheumatoid-arthritis activity via killing of synovial fibroblast cells (66.1%), downregulation of TNF-α (93.33%), IL-6 (87.97%), and p-STAT3 inhibition (77.75%). Furthermore, WT-F demonstrated better anti-proliferative activity against colon cancer cells (HCT-116). Collectively, our study revealed that the white tea fraction has boundless potential as anti-rheumatoid arthritis and anti-proliferative agent coupled with apoptotic, antioxidant anti-proteinase, and anti-inflammatory properties.

Practical applications

Our eco-friendly extracted bioactive aqueous fraction of white tea, characterized by TLC-HPLC study and phytochemical screening have demonstrated remarkable anti-rheumatoid arthritis property and anti-proliferative action on colon cancer cells including potential anti-oxidant, anti-inflammatory, and anti-proteinase efficacy. The test WT-F sample has shown impressive safety on normal mammalian cells. WT-F has demonstrated better efficacy against rheumatoid arthritis and cancer model compared to equivalent green tea fraction. Traditionally, it is extensively used for boosting immunity, and energy, with cosmetic, and agricultural applications by the native inhabitants. So, the aqueous fraction of WT is suggested to be used as a prophylactic nutraceutical supplement and or therapeutic agent in commercial polyherbal formulation to attenuate and management of auto-inflammatory rheumatoid arthritis and carcinogenesis of colon. It is additionally suggested to establish in vivo rheumatoid arthritis animal and clinical study to validate their pharmacokinetic stability and dose optimization coupled with anti-inflammatory, cytotoxicity, and anti-oxidant property.

CONFLICT OF INTEREST

The authors have no conflict of interest to declare. No authors have been paid for this work.

DATA AVAILABILITY STATEMENT

Data available on request due to privacy/ethical restrictions.

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