Cellworks Group Inc.

Saratoga, CA, United States

Cellworks Group Inc.

Saratoga, CA, United States
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The present disclosure relates to a method of treating cancer using a composition comprising Nelfinavir, Metformin, Rosuvastatin, optionally along with a pharmaceutically acceptable excipient. The said composition is used for the treatment of cancer caused due to aberration in PTEN gene, optionally along with aberration in TP53 gene and related genes selected from group comprising PI3K, CDKN2A, MDM2 and MDM4.

Kannaiyan R.,National University of Singapore | Hay H.S.,National University of Singapore | Rajendran P.,National University of Singapore | Li F.,National University of Singapore | And 10 more authors.
British Journal of Pharmacology | Year: 2011

Background and Purpose Activation of pro-inflammatory transcription factors NF-κB and signal transducer and activator of transcription 3 (STAT3) is one of the major contributors to both pathogenesis and chemoresistance in multiple myeloma (MM), which results in high mortality rate. Thus, in the present study, we investigated whether celastrol could suppress the proliferation and induce chemosensitization of MM cells by interfering with NF-κB and STAT3 activation pathways. Experimental Approach The effects of celastrol were investigated using both a virtual predictive tumour cell system and different MM cell lines resistant to doxorubicin, melphalan and bortezomib. Key Results Celastrol inhibited the proliferation of MM cell lines regardless of whether they were sensitive or resistant to bortezomib and other conventional chemotherapeutic drugs. It also synergistically enhanced the apoptotic effects of thalidomide and bortezomib. This correlated with the down-regulation of various proliferative and anti-apoptotic gene products including cyclin D1, Bcl-2, Bcl-xL, survivin, XIAP and Mcl-1. These effects of celastrol were mediated through suppression of constitutively active NF-κB induced by inhibition of IκBα kinase activation; and the phosphorylation of IκBα and of p65. Celastrol also inhibited both the constitutive and IL6-induced activation of STAT3, which induced apoptosis as indicated by an increase in the accumulation of cells in the sub-G1 phase, an increase in the expression of pro-apoptotic proteins and activation of caspase-3. ConclusionS and Implications Thus, based on our experimental findings, we conclude that celastrol may have great potential as a treatment for MM and other haematological malignancies. © 2011 The British Pharmacological Society.

Rajendran P.,National University of Singapore | Ong T.H.,Humphrey Oei Institute | Chen L.,National University of Singapore | Li F.,National University of Singapore | And 12 more authors.
Clinical Cancer Research | Year: 2011

Purpose: Hepatocellular carcinoma (HCC) is the fifth most common malignancy worldwide and the third cause of global cancer mortality. Increasing evidence suggest that STAT3 is a critical mediator of oncogenic signaling in HCC and controls the expression of several genes involved in proliferation, survival, metastasis, and angiogenesis. Thus, the novel agents that can suppress STAT3 activation have potential for both prevention and treatment of HCC. Experimental Design: The effect of butein on STAT3 activation, associated protein kinases, STAT3-regulated gene products, cellular proliferation, and apoptosis was investigated. The in vivo effect of butein on the growth of human HCC xenograft tumors in male athymic nu/nu mice was also examined. Results: We tested an agent, butein, for its ability to suppress STAT3 activation in HCC cells and nude mice model along with prospectively testing the hypothesis of STAT3 inhibition in a virtual predictive functional proteomics tumor pathway technology platform. We found that butein inhibited both constitutive and inducible STAT3 activation in HCC cells. The suppression was mediated through the inhibition of activation of upstream kinases c-Src and Janus-activated kinase 2. Butein inhibited proliferation and significantly potentiated the apoptotic effects of paclitaxel and doxorubicin in HCC cells. When administered intraperitoneally, butein inhibited the growth of human HCC xenograft tumors in male athymic nu/nu mice. Conclusions: Overall, cumulative results from experimental and predictive studies suggest that butein exerts its antiproliferative and proapoptotic effects through suppression of STAT3 signaling in HCC both in vitro and in vivo. ©2010 AACR.

Kim C.,Kyung Hee University | Cho S.K.,Jeju National University | Kapoor S.,Cellworks | Kumar A.,Cellworks | And 6 more authors.
Molecular Carcinogenesis | Year: 2014

Constitutive activation of STAT3 is frequently observed and closely linked with proliferation, survival, invasion, metastasis and angiogenesis in tumor cells. In the present study, we investigated whether β-caryophyllene oxide (CPO), a sesquiterpene isolated primarily from the essential oils of medicinal plants such as guava (Psidium guajava), and oregano (Origanum vulgare L.), can mediate its effect through interference with the STAT3 activation pathway in cancer cells. The effect of CPO on STAT3 activation, associated protein kinases and phosphatase, STAT3-regulated gene products and apoptosis was investigated using both functional proteomics tumor pathway technology platform and different tumor cell lines. We found that CPO suppressed constitutive STAT3 activation in multiple myeloma (MM), breast and prostate cancer cell lines, with a significant dose- and time-dependent effects observed inMMcells. The suppression was mediated through the inhibition of activation of upstream kinases c-Src and JAK1/2. Also, vanadate treatment reversed CPO-induced downregulation of STAT3, suggesting the involvement of a tyrosine phosphatase. Indeed, we found that CPO induced the expression of tyrosine phosphatase SHP-1 that correlated with the down-regulation of constitutive STAT3 activation. Interestingly, deletion of SHP-1 gene by siRNA abolished the ability of CPO to inhibit STAT3 activation. The inhibition of STAT3 activation by CPO inhibited proliferation, induced apoptosis and abrogated the invasive potential of tumor cells. Our results suggest for the first time that CPO is a novel blocker of STAT3 signaling cascade and thus has an enormous potential for the treatment of various cancers harboring constitutively activated STAT3. © 2013 Wiley Periodicals, Inc.

Brogden K.A.,University of Iowa | Johnson G.K.,University of Iowa | Vincent S.D.,University of Iowa | Abbasi T.,Cellworks Group Inc. | And 2 more authors.
Expert Review of Anti-Infective Therapy | Year: 2013

Acute and chronic inflammation commonly occurs throughout the oral cavity. The most common causes are physical damage and microbial infections, and less frequently immune reactions and malignant changes. All of these processes result in the induction of antimicrobial peptides, chemokines and cytokines that lead to cellular infiltrates, a vascular response, tissue destruction and cellular proliferation. A fascinating concept developing in the current literature suggests that antimicrobial peptides modulate the production of chemokines, cytokines and other cellular mediators and that this may have a larger ramification as an underlying mechanism mediating inflammation. Here, we propose that the ability of antimicrobial peptides to induce chemokines and anti-inflammatory or proinflammatory cytokines plays an important role in the early events of oral inflammation and may be a target for the prevention or treatment of oral inflammatory conditions. © 2013 Informa UK Ltd.

Vali S.,Cellworks Group Inc. | Vali S.,Cellworks | Pallavi R.,Indian Institute of Science | Kapoor S.,Cellworks Group Inc. | And 2 more authors.
Systems and Synthetic Biology | Year: 2010

Hsp90 is an ATP-dependent molecular chaperone that regulates key signaling proteins and thereby impacts cell growth and development. Chaperone cycle of Hsp90 is regulated by ATP binding and hydrolysis through its intrinsic ATPase activities, which is in turn modulated by interaction with its co-chaperones. Hsp90 ATPase activity varies in different organisms and is known to be increased in tumor cells. In this study we have quantitatively analyzed the impact of increasing Hsp90 ATPase activity on the activities of its clients through a virtual prototyping technology, which comprises a dynamic model of Hsp90 interaction with clients involved in proliferation pathways. Our studies highlight the importance of increased ATPase activity of Hsp90 in cancer cells as the key modulator for increased proliferation and survival. A tenfold increase in ATPase activity of Hsp90 often seen in cancer cells increases the levels of active client proteins such as Akt-1, Raf-1 and Cyclin D1 amongst others to about 12-, 8- and 186-folds respectively. Additionally we studied the effect of a competitive inhibitor of Hsp90 activity on the reduction in the client protein levels. Virtual prototyping experiments corroborate with findings that the drug has almost 10- to 100-fold higher affinity as indicated by a lower IC50 value (30-100 nM) in tumor cells with higher ATPase activity. The results also indicate a 15- to 25-fold higher efficacy of the inhibitor in reducing client levels in tumor cells. This analysis provides mechanistic insights into the links between increased Hsp90 ATPase activity, tumor phenotype and the hypersensitivity of tumor Hsp90 to inhibition by ATP analogs. © 2009 The Author(s).

The present disclosure describes a composition and a kit having a plurality of compounds for use in the treatment of inflammatory joint diseases and chronic inflammatory connective tissue diseases, such as Rheumatoid Arthritis (RA). The disclosure also relates to a process of obtaining the composition and the method of treating diseases by administration of the compositions.

Roy K.R.,University of Hyderabad | Reddy G.V.,University of Hyderabad | Maitreyi L.,Cellworks Group Inc. | Agarwal S.,University of Hyderabad | And 3 more authors.
Cancer Chemotherapy and Pharmacology | Year: 2010

The role of COX-2 in the regulation of the expression of MDR1, a P-glycoprotein involved in hepatocellular carcinoma cell line, HepG2, was studied in the present investigation. Celecoxib, a selective inhibitor of COX-2, at 25 μM concentration increased the accumulation of doxorubicin in HepG2 cells and enhanced the sensitivity of the cells to doxorubicin by tenfold. The induction of MDR1 expression by PGE2 and its downregulation by celecoxib or by COX-2 knockdown suggests that the enhanced sensitivity of HepG2 cells to doxorubicin by celecoxib is mediated by the downregulation of MDR1 expression, through COX-2-dependent mechanism. Further studies revealed the involvement of AP-1 in the celecoxib-induced downregulation of MDR1 expression. These experimental studies correlated well with in silico predictions and further suggested the inactivation of the signal transduction pathways involving ERK, JNK and p38. The present study thus demonstrates the usefulness of COX-2 intervention in overcoming the drug resistance in HepG2 cells. © 2009 Springer-Verlag.

Cellworks Group Inc. | Date: 2014-03-25

The present disclosure relates to a pharmaceutical composition and a kit to treat cancer. The disclosure provides a combination of compounds for use in the treatment of cancer. The disclosure further provides a process of preparing the composition and a method of treating a cancer associated with a RAS mutation or a RAS mutation along with any other mutation.

Cellworks Group Inc. | Date: 2013-11-08

The present disclosure relates to a system for obtaining a therapeutic solution for treatment of a disease or a disorder. The present disclosure also relates to a method of drug discovery and designing therapeutic solutions for various medical conditions, through the said system, comprising database, digital drug library and a processor.

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