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Ravi Kiran AV, Kusuma Kumari G, Krishnamurthy PT. ChatGPT in Drug Discovery Process. Adv Pharm Bull 2024; 14:5-6. [PMID: 38585456 PMCID: PMC10997922 DOI: 10.34172/apb.2024.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/14/2023] [Indexed: 04/09/2024] Open
Affiliation(s)
| | | | - Praveen T. Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Ooty, The Nilgiris, Tamil Nadu 643 001, India
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Ravi Kiran AVVV, Kumari GK, Krishnamurthy PT, Johnson AP, Kenchegowda M, Osmani RAM, Abu Lila AS, Moin A, Gangadharappa HV, Rizvi SMD. An Update on Emergent Nano-Therapeutic Strategies against Pediatric Brain Tumors. Brain Sci 2024; 14:185. [PMID: 38391759 PMCID: PMC10886772 DOI: 10.3390/brainsci14020185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 02/24/2024] Open
Abstract
Pediatric brain tumors are the major cause of pediatric cancer mortality. They comprise a diverse group of tumors with different developmental origins, genetic profiles, therapeutic options, and outcomes. Despite many technological advancements, the treatment of pediatric brain cancers has remained a challenge. Treatment options for pediatric brain cancers have been ineffective due to non-specificity, inability to cross the blood-brain barrier, and causing off-target side effects. In recent years, nanotechnological advancements in the medical field have proven to be effective in curing challenging cancers like brain tumors. Moreover, nanoparticles have emerged successfully, particularly in carrying larger payloads, as well as their stability, safety, and efficacy monitoring. In the present review, we will emphasize pediatric brain cancers, barriers to treating these cancers, and novel treatment options.
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Affiliation(s)
- Ammu V V V Ravi Kiran
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty 643001, The Nilgiris, Tamil Nadu, India
| | - G Kusuma Kumari
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty 643001, The Nilgiris, Tamil Nadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty 643001, The Nilgiris, Tamil Nadu, India
| | - Asha P Johnson
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Madhuchandra Kenchegowda
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Riyaz Ali M Osmani
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Amr Selim Abu Lila
- Department of Pharmaceutics, College of Pharmacy, University of Ha'il, Ha'il 81442, Saudi Arabia
| | - Afrasim Moin
- Department of Pharmaceutics, College of Pharmacy, University of Ha'il, Ha'il 81442, Saudi Arabia
| | - H V Gangadharappa
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Syed Mohd Danish Rizvi
- Department of Pharmaceutics, College of Pharmacy, University of Ha'il, Ha'il 81442, Saudi Arabia
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Sai Varshini M, Aishwarya Reddy R, T Krishnamurthy P, Selvaraj D. Rational Design of Dual Inhibitors for Alzheimer's Disease: Insights from Computational Screening of BACE1 and GSK-3β. Curr Comput Aided Drug Des 2023:CAD-EPUB-135583. [PMID: 37921183 DOI: 10.2174/0115734099270256231018072007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is one of the most concerned neurodegenerative disorders across the world characterized by amyloid-beta (Aβ) plaques and neurofibrillary tangles (NFTs), leading to cognitive decline and memory loss. Targeting key pathways involved in AD like Aβ and NFT pathways, are crucial for the development of effective therapeutic strategies. In this study, we aimed to identify and establish promising dual inhibitors targeting BACE1 and GSK-3β, two proteins implicated in Aβ and NFT formation respectively. METHODS We have used molecular docking, ADME property analysis, and MMGBSA calculations for the identification of hit molecules and further evaluation of binding affinity, drug-like properties, and stability against BACE1 and GSK-3β. RESULTS Our results demonstrated strong binding affinities of ZINC000034853956 towards the active sites of both proteins, with favorable interactions involving key residues crucial for inhibitory activity. Additionally, ZINC000034853956 exhibited favorable drug-like properties. MD simulations revealed the stable binding of ZINC000034853956 to both BACE1 and GSK-3β over a 50 ns period, with consistent ligand-protein interactions, such as hydrogen bonding and hydrophobic contacts. These findings highlight the potential of ZINC000034853956 as a promising candidate for AD treatment, acting as a dual inhibitor targeting both BACE1 and GSK-3β. Overall, our study provides valuable insights into the potential of ZINC000034853956 as a dual inhibitor for AD. The strong binding affinity, favorable drug-like properties, and stability observed in MD simulations support its suitability for further optimization and preclinical studies. CONCLUSION Further investigations are warranted to elucidate the precise molecular mechanisms and therapeutic benefits of ZINC000034853956. Our findings offer hope for the development of novel therapeutic interventions targeting crucial pathways involved in AD neurodegeneration.
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Affiliation(s)
- Magham Sai Varshini
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty- 643001, TN, India
| | - Ramakkamma Aishwarya Reddy
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty-643001, TN, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty- 643001, TN, India
| | - Divakar Selvaraj
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty- 643001, TN, India
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Mayuri M, Krishnamurthy PT, Vijayakumar TM. NK1 receptor antagonistic effect of 17-trifluoromethyl phenyl trinor prostaglandin F2α on the growth of human breast cancer cell line. Exp Mol Pathol 2022; 127:104817. [PMID: 35901925 DOI: 10.1016/j.yexmp.2022.104817] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/10/2022] [Accepted: 07/20/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND A growing number of genetic and cancer biology investigations have found that the tachykinin NK1 Receptor plays an important role in cancer cell proliferation and survival. In this study. The present study was designed to evaluate the inhibition of cell growth by 17-trifluoromethyl phenyl trinor prostaglandin F2α with NK1 receptor in breast cancer cell lines. MATERIALS AND METHODS MDB-MB-468 and MCF-7 breast cancer cell lines were used in the experiment were blocked with PGF2a. Cell proliferation and apoptosis were analyzed to evaluate the cytotoxic effect. Cell cycle distribution, Caspase-3 enzyme activity, Bad and Bax protein expression through flow cytometry and molecular docking were carried out to analyze the NK1 receptor activity. RESULTS We found that PGF2a has a high binding affinity towards NK1 Receptor from molecular docking studies. It exerted cytotoxic and antiproliferative effects against MDB-MB-468 and MCF-7 breast cancer cell lines. Our data found that treatment of cells with 17-TPGF2 resulted in cell death and showed that increased expression of Caspase-3, Bad, and Bax protein and further induces G2 cell cycle arrest. CONCLUSION Overall this study investigates the NK1 receptor antagonistic effect of PGF2 against breast cancer cell lines. However, further studies are needed to better characterize the application of NK1 receptor inhibition in clinical cancer treatment and cytotoxicity effect.
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Affiliation(s)
- Mutukuru Mayuri
- Department of Pharmacology, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, (JSS Academy of Higher Education & Research), Ooty, The Nilgiris 643001, Tamil Nadu, India
| | - Thangavel Mahalingam Vijayakumar
- Department of Pharmacy Practice, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India.
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Manandhar S, Pai KSR, Krishnamurthy PT, Kiran AVVVR, Kumari GK. Identification of novel TMPRSS2 inhibitors against SARS-CoV-2 infection: a structure-based virtual screening and molecular dynamics study. Struct Chem 2022; 33:1529-1541. [PMID: 35345416 PMCID: PMC8941836 DOI: 10.1007/s11224-022-01921-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/13/2022] [Indexed: 12/27/2022]
Abstract
The scientific insights gained from the severe acute respiratory syndrome (SARS) and the middle east respiratory syndrome (MERS) outbreaks are helping scientists to fast-track the antiviral drug discovery process against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Coronaviruses, as well as influenza viruses, depend on host type 2 transmembrane serine protease, TMPRSS2, for entry and propagation in the human cell. Recent studies show that SARS-CoV-2 also uses TMPRSS2 for its cell entry. In the present study, a structure-based virtual screening of 52,337, protease ligands downloaded from the Zinc database was carried out against the homology model of TMPRSS2 protein followed by the molecular dynamics-based simulation to identify potential TMPRSS2 hits. The virtual screening has identified 13 hits with a docking score range of -10.447 to -9.863 and glide energy range of -60.737 to -40.479 kcal/mol. The binding mode analysis shows that the hit molecules form H-bond (Asp180, Gly184 & Gly209), Pi-Pi stacking (His41), and salt bridge (Asp180) type of contacts with the active site residues of TMPRSS2. In the MD simulation of ZINC000013444414, ZINC000137976768, and ZINC000143375720 hits show that these molecules form a stable complex with TMPRSS2. The complex equilibrates well with a minimal RMSD and RMSF fluctuation. All three structures, as predicted in Glide XP docking, show a prominent interaction with the Asp180, Gly184, Gly209, and His41. Further, MD simulation also identifies a notable H-bond interaction with Ser181 for all three hits. Among these hits, ZINC000143375720 shows the most stable binding interaction with TMPRSS2. The present study is successful in identifying TMPRSS2 ligands from zinc data base for a possible application in the treatment of COVID-19.
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Affiliation(s)
- Suman Manandhar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576 104 India
| | - K Sreedhara Ranganath Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576 104 India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Ooty, The Nilgiris, 643 001 Tamil Nadu India
| | - Ammu V V V Ravi Kiran
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Ooty, The Nilgiris, 643 001 Tamil Nadu India
| | - Garikapati Kusuma Kumari
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Ooty, The Nilgiris, 643 001 Tamil Nadu India
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Lakshmanan K, Hemanth K, Krishnamurthy PT, Rajagopal K, Byran G. Design, Synthesis, and In-Vitro Biological Evaluation of PARP-1 Inhibitors Based on a 4-(Benzylideneamino)-N-(Quinolin-8-yl)Benzamide Scaffold. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2033802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kaviarasan Lakshmanan
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Tamil Nadu, India
| | - Kantabathina Hemanth
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Tamil Nadu, India
| | - Praveen T. Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Tamil Nadu, India
| | - Kalirajan Rajagopal
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Tamil Nadu, India
| | - Gowramma Byran
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Tamil Nadu, India
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Kumari M, Krishnamurthy PT, Pinduprolu SKSS, Sola P. DR-5 and DLL-4 mAb Functionalized SLNs of Gamma-Secretase Inhibitors- An Approach for TNBC Treatment. Adv Pharm Bull 2021; 11:618-623. [PMID: 34888208 PMCID: PMC8642801 DOI: 10.34172/apb.2021.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/06/2020] [Accepted: 10/17/2020] [Indexed: 12/16/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is the most aggressive and heterogeneous cancer subtypes. High rates of metastasis, poor prognosis, and drug resistance are the major problems associated with TNBC. The current chemotherapeutics eliminate only the bulk tumor cells (non-BCSCs) and do not affect breast cancer stem cells (BCSCs). The BCSCs which are left behind after chemotherapy is reported to promote recurrence and metastasis of TNBC. Death receptor-5 (DR-5) is exclusively expressed in TNBCs and mediates the extrinsic pathway of apoptosis. DR-5, therefore, can be exploited for targeted drug delivery and to induce apoptosis. Gamma-secretase mediated Notch signaling in BCSCs regulates its proliferation, differentiation, and metastasis. The endogenous ligand, Delta-like ligand 4 (DLL4), is reported to activate this Notch signaling in TNBC. Blocking this signaling pathway using both gamma-secretase inhibitors (GSIs) and DLL4 monoclonal antibody (mAb) may produce synergistic benefits. Further, the GSIs (DAPT, LY-411575, RO4929097, MK0752, etc.) suffer from poor bioavailability and off-target side effects such as diarrhea, suppression of lymphopoiesis, headache, hypertension, fatigue, and ventricular dysfunctions. In this hypothesis, we discuss Solid lipid nanoparticles (SLNs) based drug delivery systems containing GSIs and surface modified with DR-5 and DLL4 monoclonal antibodies (mAb) to effectivity target and treat TNBC. The delivery system is designed to deliver the drug cargo precisely to TNBCs through its DR-5 receptors and hence expected to reduce the off-target side effects of GSIs. Further, DLL4 mAb and GSIs are expected to act synergistically to block the Notch signal mediated BCSCs proliferation, differentiation, and metastasis.
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Affiliation(s)
- Mamta Kumari
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
| | - Sai Kiran S S Pinduprolu
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
| | - Piyongsola Sola
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, India
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Ravi Kiran AVVV, Kusuma Kumari G, Krishnamurthy PT, Khaydarov RR. Tumor microenvironment and nanotherapeutics: intruding the tumor fort. Biomater Sci 2021; 9:7667-7704. [PMID: 34673853 DOI: 10.1039/d1bm01127h] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Over recent years, advancements in nanomedicine have allowed new approaches to diagnose and treat tumors. Nano drug delivery systems exploit the enhanced permeability and retention (EPR) effect and enter the tumor tissue's interstitial space. However, tumor barriers play a crucial role, and cause inefficient EPR or the homing effect. Mounting evidence supports the hypothesis that the components of the tumor microenvironment, such as the extracellular matrix, and cellular and physiological components collectively or cooperatively hinder entry and distribution of drugs, and therefore, limit the theragnostic applications of cancer nanomedicine. This abnormal tumor microenvironment plays a pivotal role in cancer nanomedicine and was recently recognized as a promising target for improving nano-drug delivery and their therapeutic outcomes. Strategies like passive or active targeting, stimuli-triggered nanocarriers, and the modulation of immune components have shown promising results in achieving anticancer efficacy. The present review focuses on the tumor microenvironment and nanoparticle-based strategies (polymeric, inorganic and organic nanoparticles) for intruding the tumor barrier and improving therapeutic effects.
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Affiliation(s)
- Ammu V V V Ravi Kiran
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education and Research), Ooty, Tamil Nadu, 643001, India
| | - Garikapati Kusuma Kumari
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education and Research), Ooty, Tamil Nadu, 643001, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education and Research), Ooty, Tamil Nadu, 643001, India
| | - Renat R Khaydarov
- Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Tashkent, 100047, Uzbekistan.
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Kaviarasan L, Eldhose E, Krishnamurthy PT, Rajagopal K, Mohammed M, Prudviraj P, Byran G. 1,3,4-Thiadiazolo (3,2-Α) Pyrimidine-6-Carbonitrile Scaffold as PARP1 Inhibitors. Anticancer Agents Med Chem 2021; 21:2050-2065. [PMID: 33327923 DOI: 10.2174/1871520621666201216095018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND 1,3,4-thiadiazolo pyrimidine is a lead molecule that is versatile for a wide variety of biological activities and in continuation of our interest in establishing some novel heterocyclic compounds for antitumor activity. OBJECTIVE The objective of the study was to synthesize a series of 5-amino-7-(substituted aldehyde)-2[(naphthalene- 2-yloxy)methyl] -[1,3,4]thiadiazolo-[3,2-α]-pyrimidine-6- carbonitrile derivatives and evaluate their possible in vitro and in vivo anticancer activity. METHODS Herein, we report the synthetic scheme, which was followed for the preparation of a series of title compounds B1- B9 outlined in scheme 1. The intermediate 5-[(naphthalen-2- yloxy)methyl]-1,3,4-thiadiazolo- 2-amine was prepared by heating 2-naphthoxyacetic acid and thiosemicarbazide in the presence of phosphoryl chloride at a temperature of 65-75°C. The obtained compound reacted with malononitrile and an appropriate amount of aromatic and heteroaromatic aldehydes in refluxing ethanol yielded 5-amino-7-(substituted aldehyde)-2[(naphthalene-2-yloxy)methyl] -[1,3,4]thiadiazolo-[3,2-α]-pyrimidine-6- carbonitrile derivatives (B1 - B9). The purity of the synthesized compounds was ensured by various spectral analyses. RESULTS In in silico molecular docking studies, compounds B3 and B9 show binding affinity like known PARP1 inhibitor olaparib. The cellular evaluation indicates that the anticancer profile of compounds B1, B3, and B9 is significant when compared to the standard drug (olaparib) against MDA-MB-232 cell line and compounds B3, B6, and B7 are the most active against MCF-7 cell lines. The most active compound B3 was subjected to acute oral toxicity studies by OECD 423 guidelines and in vivo anti-cancer studies were carried out using DMBA induced model. CONCLUSION The in silico docking study of the newly synthesized compounds was performed; the results showed good binding mode in the active site of PARP1 enzyme. In silico ADME properties of synthesized compounds were also studied and showed good drug-like properties.
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Affiliation(s)
- Lakshmanan Kaviarasan
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty- 643001, The Nilgiris, Tamil Nadu, India
| | - Elizabeth Eldhose
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty- 643001, The Nilgiris, Tamil Nadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty-643001, The Nilgiris, Tamil Nadu, India
| | - Kalirajan Rajagopal
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty- 643001, The Nilgiris, Tamil Nadu, India
| | - Manal Mohammed
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty-643001, The Nilgiris, Tamil Nadu, India
| | - Pulla Prudviraj
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty- 643001, The Nilgiris, Tamil Nadu, India
| | - Gowramma Byran
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty- 643001, The Nilgiris, Tamil Nadu, India
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Kumari GK, Kiran AVVVR, Krishnamurthy PT. Preliminary evaluation on the beneficial effects of pioglitazone in the treatment of endometrial cancer. Med Oncol 2021; 38:71. [PMID: 34008039 DOI: 10.1007/s12032-021-01521-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
Endometrial cancer (EMC) is one of the complicated gynecological cancers, affecting more than three million women worldwide. Anticancer strategies such as chemotherapy, radiation, and surgery are found to be ineffective and are associated with patient incompliances. The aim of the present study is to repurpose non-oncological drug, i.e., Pioglitazone, a peroxisome proliferator-activated receptor gamma (PPAR-γ) agonist, in the treatment of endometrial cancer. The study groups consist of 50 female Swiss albino mice, out of which 40 had endometrial cancer induced with N-ethyl-N-nitrosourea (ENU) and estradiol hexadrobenzoate (EHB). The other groups received saline, EHB, paclitaxel, and different test doses of pioglitazones. Different preliminary parameters such as weekly body weight, mean survival time, percentage increase in life span, and uterine tissue weight were analyzed along with histopathological analysis. We observed a significant change in weekly body weight, improvement in percentage life span, and partial restoration of uterine tissue weight to normal compared to a standard drug, paclitaxel. In the present preliminary evaluation, we have identified that pioglitazone exhibited a significant dose-dependent anticancer activity against ENU- and EHB-induced endometrial cancer, compared to the standard paclitaxel.
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Affiliation(s)
- Garikapati Kusuma Kumari
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty, Tamil Nadu, 643001, India
| | - Ammu V V V Ravi Kiran
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty, Tamil Nadu, 643001, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rocklands, Ooty, Tamil Nadu, 643001, India.
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SS Pindiprolu SK, Krishnamurthy PT, Ghanta VR, Chintamaneni PK. Phenyl boronic acid-modified lipid nanocarriers of niclosamide for targeting triple-negative breast cancer. Nanomedicine (Lond) 2020; 15:1551-1565. [DOI: 10.2217/nnm-2020-0003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: To study the active targeting efficacy of phenylboronic acid-modified niclosamide solid lipid nanoparticles (PBA-Niclo-SLN) in triple-negative breast cancer (TNBC). Materials & methods: PBA-Niclo-SLNs were formulated by an emulsification-solvent evaporation method using PBA-associated stearylamine (PBSA) as lipid. The drug uptake and the anticancer propensity of PBA-Niclo-SLN were studied in TNBC (MDA-MB231) cells and tumor-bearing mice. Results: PBA-Niclo-SLN formulation resulted in greater antitumor efficacy by inducing G0/G1 cell cycle arrest and apoptosis. Besides, PBA-Niclo-SLN effectively inhibited STAT3, CD44+/CD24- TNBC stem cell subpopulation, epithelial–mesenchymal transition markers. Besides, PBA-Niclo-SLN selectively accumulated at the tumor site with more significant tumor regression and improved the survivability in TNBC tumor-bearing mice. Conclusion: PBA-Niclo-SLN formulation would be an effective strategy to eradicate TNBC cells (breast cancer stem cells and nonbreast cancer stem cells) efficiently.
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Affiliation(s)
- Sai Kiran SS Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, 643001, Tamil Nadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, 643001, Tamil Nadu, India
| | - Venkata Rao Ghanta
- Synthetic Organic Chemistry Division, GVK Biosciences Private Limited, IDA Nacharam, Hyderabad, 500076, Telangana, India
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, 643001, Tamil Nadu, India
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Garikapati KK, Ammu VVVRK, Krishnamurthy PT, Chintamaneni PK, Pindiprolu SKSS. Possible role of Thiazolidinedione in the management of Type-II Endometrial Cancer. Med Hypotheses 2019; 126:78-81. [PMID: 31010504 DOI: 10.1016/j.mehy.2019.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/19/2019] [Accepted: 03/21/2019] [Indexed: 10/27/2022]
Abstract
Type-II Endometrial Cancer (EMC) is one of the most common types of gynaecological cancer affecting more than 2.7 million people worldwide. Clinical evidence shows that adipokines levels are abnormally altered in Type-II EMC and reported to be one of the major responsible factor for uncontrolled proliferation and metastasis in Type-II EMC. Reversing the altered adipokine levels, therefore, help to control Type-II EMC proliferation and metastasis. In the present hypothesis we focus on the possible role of Thiazolidinediones in favourably altering the adipokine levels to benefit in the management of Type-II EMC.
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Affiliation(s)
- Kusuma Kumari Garikapati
- Department of Pharmacology, JSS College of Pharmacy (a Constituent College of JSS Academy of Higher Education and Research), Udhagamandalam, Tamil Nadu 643001, India
| | - V V V Ravi Kiran Ammu
- Department of Pharmacology, JSS College of Pharmacy (a Constituent College of JSS Academy of Higher Education and Research), Udhagamandalam, Tamil Nadu 643001, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (a Constituent College of JSS Academy of Higher Education and Research), Udhagamandalam, Tamil Nadu 643001, India.
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy (a Constituent College of JSS Academy of Higher Education and Research), Udhagamandalam, Tamil Nadu 643001, India
| | - Sai Kiran S S Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy (a Constituent College of JSS Academy of Higher Education and Research), Udhagamandalam, Tamil Nadu 643001, India
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13
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Ravi Kiran Ammu VVV, Garikapati KK, Krishnamurthy PT, Chintamaneni PK, Pindiprolu SKSS. Possible role of PPAR-γ and COX-2 receptor modulators in the treatment of Non-Small Cell lung carcinoma. Med Hypotheses 2019; 124:98-100. [PMID: 30798928 DOI: 10.1016/j.mehy.2019.02.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/03/2019] [Indexed: 12/12/2022]
Abstract
Non-Small Cell lung cancer (NSCLC) accounts for 85% of total lung cancers worldwide, affecting more than 1.5 million people every year. Recent studies reported that lung adenocarcinoma express Peroxisome Proliferator Activated Receptor-γ (PPAR-γ) which is believed to be inactivated due to cytoplasmic accumulation or somatic 'loss of function' of the gene. PPAR-γ reported to play an important role in cell proliferation, cell differentiation and apoptosis via inhibition of NF-kβ pathway. Adenocarcinoma also overexpress cyclooxygenase-2 (COX-2), which is reported to promote angiogenesis and metastasis via TX-A2 production. Therefore, we hypothesize that activation of PPAR-γ (through PPAR-γ agonists) and inhibition of COX-2 (through COX-2 inhibitors) will have beneficial effects in the treatment of NSCLC.
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Affiliation(s)
- V V V Ravi Kiran Ammu
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Rocklands, Udhagamandalam, Tamil Nadu 643 001, India
| | - Kusuma Kumari Garikapati
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Rocklands, Udhagamandalam, Tamil Nadu 643 001, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Rocklands, Udhagamandalam, Tamil Nadu 643 001, India.
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Rocklands, Udhagamandalam, Tamil Nadu 643 001, India
| | - Sai Kiran S S Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research), Rocklands, Udhagamandalam, Tamil Nadu 643 001, India
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14
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Ghanta VR, Madala N, Pasula A, Pindiprolu SKSS, Battula KS, Krishnamurthy PT, Raman B. Novel dermacozine-1-carboxamides as promising anticancer agents with tubulin polymerization inhibitory activity. RSC Adv 2019; 9:18670-18677. [PMID: 35515253 PMCID: PMC9064817 DOI: 10.1039/c9ra02416f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/27/2019] [Indexed: 11/21/2022] Open
Abstract
In the present study, novel dermacozine-1-carboxamides (8a–8n) were synthesized and screened for their in vitro cytotoxic activity against three different cancer cell lines: MCF-7 (breast cancer), A-549 (lung cancer) and DU145 (prostate cancer). All the compounds showed more efficiency against the DU145 cell line than against the MCF-7 and A-549 cell lines. Furthermore, 8a (CTC50: 7.02 μM) and 8l (CTC50: 6.32 μM) have been found to be more effective against the DU145 cells as they arrest the cell cycle at the G2/M phase by interfering with tubulin polymerization; these results indicate that these compounds act as potential anti-cancer agents by inhibiting tubulin polymerization. In the present study, novel dermacozine-1-carboxamides (8a–8n) were synthesized and screened for their in vitro cytotoxic activity against three different cancer cell lines: MCF-7 (breast cancer), A-549 (lung cancer) and DU145 (prostate cancer).![]()
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Affiliation(s)
- Venkata Rao Ghanta
- GVK Biosciences Private Limited
- Medicinal Chemistry Division
- Hyderabad
- India
- Department of Chemistry
| | - Nagaraju Madala
- GVK Biosciences Private Limited
- Medicinal Chemistry Division
- Hyderabad
- India
- Department of Chemistry
| | - Aparna Pasula
- Department of Chemistry
- Jawaharlal Nehru Technological University
- Hyderabad
- India
| | | | | | - Praveen T. Krishnamurthy
- Department of Pharmacology
- JSS College of Pharmacy
- JSS Academy of Higher Education & Research
- India
| | - Balamurali Raman
- GVK Biosciences Private Limited
- Medicinal Chemistry Division
- Hyderabad
- India
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15
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Lakkappa N, Krishnamurthy PT, M D P, Hammock BD, Hwang SH. Soluble epoxide hydrolase inhibitor, APAU, protects dopaminergic neurons against rotenone induced neurotoxicity: Implications for Parkinson's disease. Neurotoxicology 2018; 70:135-145. [PMID: 30472438 DOI: 10.1016/j.neuro.2018.11.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 01/20/2023]
Abstract
Epoxyeicosatrienoic acids (EETs), metabolites of arachidonic acid, play a crucial role in cytoprotection by attenuating oxidative stress, inflammation and apoptosis. EETs are rapidly metabolised in vivo by the soluble epoxide hydrolase (sEH). Increasing the half life of EETs by inhibiting the sEH enzyme is a novel strategy for neuroprotection. In the present study, sEH inhibitors APAU was screened in silico and further evaluated for their antiparkinson activity against rotenone (ROT) induced neurodegeneration in N27 dopaminergic cell line and Drosophila melanogaster model of Parkinson disease (PD). In the in vitro study cell viability (MTT and LDH release assay), oxidative stress parameters (total intracellular ROS, hydroperoxides, protein oxidation, lipid peroxidation, superoxide dismutase, catalase, glutathione peroxidise, glutathione reductase, glutathione, total antioxidant status, mitochondrial complex-1activity and mitochondrial membrane potential), inflammatory markers (IL-6, COX-1 and COX-2), and apoptotic markers (JNK, phospho-JNK, c-jun, phospho-c-jun, pro and active caspase-3) were assessed to study the neuroprotective effects. In vivo activity of APAU was assessed in Drosophila melanogaster by measuring survival rate, negative geotaxis, oxidative stress parameters (total intracellular ROS, hydroperoxides, glutathione levels) were measured. Dopamine and its metabolites were estimated by LC-MS/MS analysis. In the in silico study the molecule, APAU showed good binding interaction at the active site of sEH (PDB: 1VJ5). In the in vitro study, APAU significantly attenuated ROT induced changes in oxidative, pro-inflammatory and apoptotic parameters. In the in vivo study, APAU significantly attenuates ROT induced changes in survival rate, negative geotaxis, oxidative stress, dopamine and its metabolites levels (p < 0.05). Our study, therefore, concludes that the molecule APAU, has significant neuroprotection benefits against rotenone induced Parkinsonism.
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Affiliation(s)
- Navya Lakkappa
- Department of Pharmacology, JSS College of Pharmacy, Ooty, India
| | | | - Pandareesh M D
- Department of Neurochemistry, National Institute of Mental Health & Neuro Sciences, Bangalore, India
| | - Bruce D Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Research Center, University of California, Davis, United States
| | - Sung Hee Hwang
- Department of Entomology and Nematology, and Comprehensive Cancer Research Center, University of California, Davis, United States
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16
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Pindiprolu SKSS, Chintamaneni PK, Krishnamurthy PT, Ratna Sree Ganapathineedi K. Formulation-optimization of solid lipid nanocarrier system of STAT3 inhibitor to improve its activity in triple negative breast cancer cells. Drug Dev Ind Pharm 2018; 45:304-313. [DOI: 10.1080/03639045.2018.1539496] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sai Kiran S. S. Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy, Ooty (Constituent College), JSS Academy of Higher Education and Research, Mysuru, India
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy, Ooty (Constituent College), JSS Academy of Higher Education and Research, Mysuru, India
| | - Praveen T. Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, Ooty (Constituent College), JSS Academy of Higher Education and Research, Mysuru, India
| | - Kinnera Ratna Sree Ganapathineedi
- Department of Pharmacology, JSS College of Pharmacy, Ooty (Constituent College), JSS Academy of Higher Education and Research, Mysuru, India
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17
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Pindiprolu SKSS, Krishnamurthy PT, Chintamaneni PK. Pharmacological targets of breast cancer stem cells: a review. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:463-479. [PMID: 29476201 DOI: 10.1007/s00210-018-1479-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 02/13/2018] [Indexed: 02/07/2023]
Abstract
Breast cancers contain small population of tumor-initiating cells called breast cancer stem cells (BCSCs), which are spared even after chemotherapy. Recently, BCSCs are implicated to be a cause of metastasis, tumor relapse, and therapy resistance in breast cancer. BCSCs have unique molecular mechanisms, which can be targeted to eliminate them. These include surface biomarkers, proteins involved in self-renewal pathways, drug efflux transporters, apoptotic/antiapoptotic proteins, autophagy, metabolism, and microenvironment regulation. The complex molecular mechanisms behind the survival of BCSCs and pharmacological targets for elimination of BCSCs are described in this review.
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Affiliation(s)
- Sai Kiran S S Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy (Jagadguru Sri Shivarathreeshwara University), Rocklands, Udhagamandalam, Tamil Nadu, 643001, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (Jagadguru Sri Shivarathreeshwara University), Rocklands, Udhagamandalam, Tamil Nadu, 643001, India.
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy (Jagadguru Sri Shivarathreeshwara University), Rocklands, Udhagamandalam, Tamil Nadu, 643001, India
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18
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Thondawada M, Wadhwani AD, S. Palanisamy D, Rathore HS, Gupta RC, Chintamaneni PK, Samanta MK, Dubala A, Varma S, Krishnamurthy PT, Gowthamarajan K. An effective treatment approach of DPP-IV inhibitor encapsulated polymeric nanoparticles conjugated with anti-CD-4 mAb for type 1 diabetes. Drug Dev Ind Pharm 2018; 44:1120-1129. [DOI: 10.1080/03639045.2018.1438460] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mahesh Thondawada
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Ashish Devidas Wadhwani
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Dhanabal S. Palanisamy
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | | | - Ramesh C. Gupta
- Department of Biotechnology, Nagaland University, Dimapur, India
| | - Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Malay K. Samanta
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Anil Dubala
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Sameer Varma
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Praveen T. Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
| | - Kuppusamy Gowthamarajan
- Department of Pharmaceutics, JSS College of Pharmacy (Off campus, Jagadguru Sri Shivarathreeswara University, Mysuru), Ootacamund, India
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Pindiprolu SKSS, Krishnamurthy PT, Chintamaneni PK, Karri VVSR. Nanocarrier based approaches for targeting breast cancer stem cells. Artif Cells Nanomed Biotechnol 2017; 46:885-898. [PMID: 28826237 DOI: 10.1080/21691401.2017.1366337] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Breast cancer stem cells (BCSCs) are heterogeneous subpopulation of tumour initiating cells within breast tumours. They are spared even after chemotherapy and responsible for tumour relapse. Targeting BCSCs is, therefore, necessary to achieve radical cure in breast cancer. Despite the availability of agents targeting BCSCs, their clinical application is limited due to their off-target effects and bioavailability issues. Nanotechnology based drug carriers (nanocarriers) offer various advantages to deliver anti-BCSCs agents specifically to their target sites by overcoming their bioavailability issues. In this review, we describe various strategies for targeting BCSCs using nanocarriers.
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Affiliation(s)
- Sai Kiran S S Pindiprolu
- a Department of Pharmacology , JSS College of Pharmacy (A Constituent College of Jagadguru Sri Shivarathreeshwara University) , Ootacamund , Tamil Nadu , India
| | - Praveen T Krishnamurthy
- a Department of Pharmacology , JSS College of Pharmacy (A Constituent College of Jagadguru Sri Shivarathreeshwara University) , Ootacamund , Tamil Nadu , India
| | - Pavan Kumar Chintamaneni
- a Department of Pharmacology , JSS College of Pharmacy (A Constituent College of Jagadguru Sri Shivarathreeshwara University) , Ootacamund , Tamil Nadu , India
| | - Veera Venkata Satyanarayana Reddy Karri
- b Department of Pharmaceutics , JSS College of Pharmacy (A Constituent College of Jagadguru Sri Shivarathreeshwara University) , Ootacamund , Tamil Nadu , India
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20
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Chintamaneni PK, Krishnamurthy PT, Rao PV, Pindiprolu SS. Surface modified nano-lipid drug conjugates of positive allosteric modulators of M1 muscarinic acetylcholine receptor for the treatment of Alzheimer’s disease. Med Hypotheses 2017; 101:17-22. [DOI: 10.1016/j.mehy.2017.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 10/31/2016] [Accepted: 01/02/2017] [Indexed: 12/24/2022]
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Lakkappa N, Krishnamurthy PT, Hammock BD, Velmurugan D, Bharath MMS. Possible role of Epoxyeicosatrienoic acid in prevention of oxidative stress mediated neuroinflammation in Parkinson disorders. Med Hypotheses 2016; 93:161-5. [PMID: 27372879 DOI: 10.1016/j.mehy.2016.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/24/2016] [Accepted: 06/04/2016] [Indexed: 11/19/2022]
Abstract
Parkinson's disease (PD) is a multifactorial neurodegenerative disease involving oxidative stress, neuroinflammation and apoptosis. Epoxyeicosatrienoic acids (EETs) are arachidonic acid metabolites and they play a role in cytoprotection by modulating various cell signaling pathways. This cytoprotective role of EETs are well established in cerebral stroke, cardiac failure, and hypertension, and it is due to their ability to attenuate oxidative stress, endoplasmic reticulum stress, inflammation, caspase activation and apoptosis. The actions of EETs in brain closely parallel the effects which is observed in the peripheral tissues. Since many of these effects could potentially contribute to neuroprotection, EETs are, therefore, one of the potential therapeutic candidates in PD. Therefore, by increasing the half life of endogenous EETs in vivo via inhibition of sEH, its metabolizing enzyme can, therefore, constitutes an important therapeutic strategy in PD.
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Affiliation(s)
- Navya Lakkappa
- Department of Pharmacology, JSS College of Pharmacy (A Constituent College of JSS University, Mysore), Ootacamund, Tamilnadu, India
| | - Praveen T Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (A Constituent College of JSS University, Mysore), Ootacamund, Tamilnadu, India.
| | - Bruce D Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Research Center, University of California, Davis, CA, USA
| | - D Velmurugan
- Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai, India
| | - M M Srinivas Bharath
- Department of Neurochemistry, National Institute of Mental Health & Neuro Sciences, Bangalore, India
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22
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Krishnamurthy PT, Vardarajalu A, Wadhwani A, Patel V. Identification and characterization of a potent anticancer fraction from the leaf extracts of Moringa oleifera L. Indian J Exp Biol 2015; 53:98-103. [PMID: 25757240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Anticancer potential of Moringa oleifera L. extracts have been well established. However, there are no reports on the isolated molecules/fractions from these extracts which are responsible for the anticancer/cytotoxic activity. Thus, in the present study, we explored the same. The n-hexane, chloroform, ethyl acetate, methanol extracts of the M. oleifera leaves and 15 fractions (F1 to F15) of ethyl acetate extract were evaluated for their in vitro and in vivo anticancer activity using Hep-2 cell lines and Dalton's lymphoma ascites model in mice, respectively. Among the tested samples, the F1 fraction showed potential cytotoxic effect in Hep-2 cell lines with a CTC50 value of 12.5 ± 0.5 μg/ml. In vivo studies with the doses 5 and 10 mg/kg, p.o. demonstrated significant reduction in body weight and increased the mean survival time compared to the control group. These results were also comparable to the standard, 5-Fluorouracil, treated animals. We have also successfully isolated and characterized the anticancer fraction, F1 from the leaves of M. oleifera L.
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Shrestha A, Krishnamurthy PT, Thomas P, Hammock BD, Hwang SH. Soluble epoxide hydrolase inhibitor, t-TUCB, protects against myocardial ischaemic injury in rats. ACTA ACUST UNITED AC 2014; 66:1251-8. [PMID: 24697323 DOI: 10.1111/jphp.12251] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/02/2014] [Indexed: 01/07/2023]
Abstract
OBJECTIVES To determine the protective role of a soluble epoxide hydrolase(sEH) inhibitor, trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido] cyclohexyloxy} benzoic acid (t-TUCB), in isoproterenol (ISO)-induced myocardial ischaemic injury in vivo. METHODS Cardioprotective activity of t-TUCB was studied against ISO-induced myocardial ischaemic injury in male Wistar rats. Cardioprotection was assessed by measuring elecrocardiographic (EKG), serum lactate dehydrogenase (LDH) and creatine kinase (CK-MB) levels, cardiac calcium and antioxidant levels, and also by measuring infarct size in the cardiac tissue. KEY FINDINGS Pretreatment with t-TUCB at 3, 10 and 30 mg/kg orally for a period of 14 days significantly prevented the changes in EKG parameters (QTc interval prolongation, ST height depression, pathological Q waves formation and T-wave inversion), serum cardiac biomarkers (CK-MB and LDH), relative heart weight, myocardial calcium levels, infarct size and the oxidative status in the cardiac tissue (lipid peroxidation, catalase and superoxide dismutase levels) when compared with the untreated control animals (P < 0.05). CONCLUSION The sEH inhibitor t-TUCB significantly prevents ISO-induced myocardial ischaemic injury in rats. This study provides a preliminary confirmation of the efficacy of t-TUCB by oral administration in rats.
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Affiliation(s)
- Ayush Shrestha
- Department of Pharmacology, JSS College of Pharmacy (A constituent college of JSS University, Mysore), Ootacamund, Tamilnadu, India
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