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Journal of Environmental Pathology, Toxicology and Oncology
Impact-faktor: 1.625 5-jähriger Impact-Faktor: 1.63 SJR: 0.402 SNIP: 0.613 CiteScore™: 2.3

ISSN Druckformat: 0731-8898
ISSN Online: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvironPatholToxicolOncol.2019029460
pages 173-183

Increased Expression of TGF-β and IFN-γ in Peripheral Blood Mononuclear Cells (PBMCs) Cultured in Conditioned Medium (CM) of K562 Cell Culture

A. A. Mohamed Adil
School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, India 600048
Lavanya Vallinayagam
School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, India 600048
K. Chitra
Translational Research Platform for Veterinary Biologicals, Central University Laboratory Building, TANUVAS, Madhavaram Milk Colony, Chennai, Tamil Nadu, India 600051
Shazia Jamal
School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, India 600048
Ashok Kumar Pandurangan
School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, India 600048
Neesar Ahmed
School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, India 600048


In the present study, we investigated the effects of conditioned media (CM) collected from the cancer cell lines (K562, MCF-7, and HeLa) on peripheral blood mononuclear cells (PBMCs) isolated from the healthy human blood. The soluble factors in the CM are probably responsible for the differential mRNA expressions of Foxp3, Helios, Neuropilin- 1 (NRP-1), and glycoprotein A repetitions predominant (GARP), along with IFN-γ and TGF-β in PBMCs cultured with cancer cells CM. The PBMCs cultured with CM of K562 showed increased expression of Foxp3, Helios, NRP-1, GARP, IFN-γ, and TGF-β compared to PBMCs cultured with CM of MCF-7 and HeLa cells. In addition, the intracellular staining on PBMCs cultured with CM from cell lines were also evaluated for CD4, CD25, Foxp3, Helios, and NRP-1 by multicolor flow cytometry. The expression of CD4+CD25+Foxp3+, CD4+Helios+Foxp3+ and CD+NRP-1+Foxp3+ showed retarded cell population compared to control PBMCs. Our data suggest that soluble factors in CM of cancer cells may trigger the immune response in PBMCs resulting in a systematic response. Further research could lead to the identification of specific soluble factors that are involved in trafficking of cells into the immune cascades, which could be a safe and promising strategy for targeting human cancers.


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