Abstract
Triple-negative breast cancer presents a global health concern due to its prevalence and treatment challenges. The heterogeneity of tumor subtypes and the lack of therapeutic targets contribute to treatment failure, compounded by adverse effects and resistance to conventional treatments. Consequently, there is an urgent need for innovative therapeutic strategies. This study aims to develop a green-synthesized compound by conjugating Tectona grandis and Lactobacillus plantarum with PAMAM dendrimers, evaluating its efficacy against TNBC. The potent bioactive compounds identified, 1-naphthalenecarboxylicacid, -(3-furanyl) ethyl] decahydro-1,4a-didimethyl-6-methylene from T. grandis and 3-phenyl-1,2,4-benzotriazine from L. plantarum, were analyzed through GC-MS. Their interaction with the autophagy gene ATG5 was examined using the PyRX program, demonstrating potential for drug design. Characterization of the synthesized compounds was conducted through UV-Vis spectroscopy, TEM, DLS, Zeta Potential, and FTIR analysis, confirming the formation of negatively charged, polydispersed, multi-branched (5.71–7.54 nm) with an absorption peak at 351 nm nanoparticles (PDTgNP) and positively charged, monodispersed, multi-branched (11–17 nm), absorption peak at 258 nm nanoparticles (PDLpNP). The antitumor efficacy of PDTgNP and PDLpNP was evaluated through MTT assay, scratch assay, DAPI, and double-staining techniques on the MDA-MB-231 cell line, demonstrating dose-dependent cytotoxicity with IC50 values of 43.9 μg/ml and 54.90 µg/ml, respectively, along with its enhanced autophagic and apoptotic efficacy. Additionally, PDTgNP and PDLpNP downregulated LC3 while upregulating ATG3, ATG5, and ATG12 in MDA-MB-231 cells, indicating potential action of autophagy. Therefore, this green synthesis method holds promise as an effective approach, potentially yielding novel promising anticancer agents for the treatment of TNBC.
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Data Availability
Data sharing is not applicable to this article as no datasets were generated or analyzed during the current study.
Abbreviations
- TNBC:
-
Triple-negative breast cancer
- PAMAM:
-
Poly amido amine
- T. grandis :
-
Tectona grandis
- L. plantarum :
-
Lactobacillus plantarum
- MRS broth:
-
De Man–Rogosa–Sharpe broth
- PDTgNP:
-
PAMAM dendrimer decorated T. grandis nanoparticles
- PDLpNP:
-
PAMAM dendrimer decorated L. plantarum nanoparticles
- EPR:
-
Enhanced permeability and retention
- METgF:
-
Methanolic extract of T. grandis flower
- GC-MS:
-
Gas chromatography-mass spectrum
- AMU:
-
Atomic mass units
- EI:
-
Electron impact
- TEM:
-
Transmission electron microscopy
- DLS:
-
Dynamic light scattering
- FTIR:
-
Fourier transform infrared spectrometer
- DPPH:
-
2,2-Diphenyl-1-picrylhydrazyl
- RT-PCR:
-
Real-Time PCR
- PDB:
-
Protein data bank
- AO:
-
Acridine Orange
- EtBr:
-
Ethidium Bromide
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Acknowledgements
All co-authors would like to express our sincere gratitude towards Dr. K. M. Saradhadevi, Assistant Professor, Department of Biochemistry, for her constant moral support and guidance throughout this research work and the Government of Tamil Nadu for providing financial support through the Tamil Nadu State Council for Science and Technology (TNSCST) (Letter No. TNSCST/STP/MS-02/2019-20/3722; Dated: 29.03.2021), Directorate of Technical Education Campus, Chennai, 600025.
Funding
This work was supported by the Tamil Nadu State Council for Science and Technology (TNSCST) (Letter No. TNSCST/STP/MS-02/2019-20/3722; Dated: 29.03.2021), Directorate of Technical Education Campus, Chennai, 600025. Dr. K. M. Saradhadevi has received research support from TNSCST.
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Saradhadevi Muthukrishnan: corresponding and first author makes a sustainable contribution to the intellectual input and conceptual designing of the whole paper.
Gayathiri Gunasangkaran, Anjali K. Ravi, Sobiya Ramaraju Amirthalakshmi, and Durganjali Gandhi: drafting the article, formal analysis, methodology, and submitting the final version of the article.
Vijaya Anand Arumugam: makes a sustainable contribution to the intellectual input and design of the whole paper.
Velayuthaprabhu Shanmugam, Kunnathur Murugesan Sakthivel, Marie Arockianathan Pushpam, Ashokkumar Kaliyaperumal, Gurusaravanan Packiaraj, and Arun Muthukrishnan: co-authors who might assist the corresponding author and first author in writing the article and validate the article.
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Muthukrishnan, S., Gunasangkaran, G., Ravi, A.K. et al. Molecular Mechanism of Novel PAMAM Dendrimer Decorated Tectona grandis and Lactobacillus plantarum Nanoparticles on Autophagy-Induced Apoptosis in TNBC Cells. BioNanoSci. (2024). https://doi.org/10.1007/s12668-024-01532-8
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DOI: https://doi.org/10.1007/s12668-024-01532-8