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Huang Y, Cuan X, Zhu W, Yang X, Zhao Y, Sheng J, Zi C, Wang X. An EGCG Derivative in Combination with Nimotuzumab for the Treatment of Wild-Type EGFR NSCLC. Int J Mol Sci 2023; 24:14012. [PMID: 37762316 PMCID: PMC10531337 DOI: 10.3390/ijms241814012] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Inhibiting the tyrosine kinase activity of epidermal growth factor receptor (EGFR) using small-molecule tyrosine kinase inhibitors (TKIs) or monoclonal antibodies is often ineffective in treating cancers harboring wild-type EGFR. Given the fact that EGFR possesses a kinase-independent pro-survival function, more effective inhibition of EGFR-mediated signals is therefore necessary. In this study, we investigated the effects of using a combination of low-dose nimotuzumab and theasinensin A to evaluate whether the inhibitory effect of nimotuzumab on NCI-H441 cancer cells was enhanced. Here, theasinensin A, a novel epigallocatechin-3-gallate (EGCG) derivative, was identified and its potent anticancer activity against wild-type EGFR NSCLC was demonstrated in vitro; the anticancer activity was induced through degradation of EGFR. Mechanistic studies further revealed that theasinensin A bound directly to the EGFR extracellular domain, which decreased interaction with its ligand EGF in combination with nimotuzumab. Theasinensin A significantly promoted EGFR degradation and repressed downstream survival pathways in combination with nimotuzumab. Meanwhile, treatment with theasinensin A and nimotuzumab prevented xenograft growth, whereas the single agents had limited effect. Thus, the combination therapy of theasinensin A with nimotuzumab is a powerful candidate for treatment of wild-type EGFR cancers.
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Affiliation(s)
- Yanping Huang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Science, Yunnan Agricultural University, Kunming 650201, China
| | - Xiangdan Cuan
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Weiwei Zhu
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Xingying Yang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Yunli Zhao
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
| | - Jun Sheng
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming 650201, China
| | - Chengting Zi
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Science, Yunnan Agricultural University, Kunming 650201, China
| | - Xuanjun Wang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; (Y.H.); (X.C.); (W.Z.); (X.Y.); (Y.Z.); (J.S.)
- College of Science, Yunnan Agricultural University, Kunming 650201, China
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Cuan X, Yang X, Zhu W, Zhao Y, Luo R, Huang Y, Wang X, Sheng J. Antitumor effects of erlotinib in combination with berberine in A431 cells. BMC Pharmacol Toxicol 2023; 24:29. [PMID: 37170144 PMCID: PMC10173514 DOI: 10.1186/s40360-023-00661-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 03/07/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND First-generation epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), such as erlotinib, have been shown to target tumors with L858R (exon 21) and exon 19 deletions, resulting in significant clinical benefits. However, acquired resistance often occurs due to EGFR mutations. Therefore, novel therapeutic strategies for treatment of patients with EGFR-positive tumors are needed. Berberine (BBR) is an active alkaloid extracted from pharmaceutical plants such as Coptis chinensis. Berberine has been shown to significantly inhibit EGFR activity and mediate anticancer effects in multiple preclinical studies. We investigated whether combining BBR with erlotinib could augment erlotinib-induced cell growth inhibition of EGFR-positive cells in a mouse xenograft model. METHODS We examined the antitumor activities and potential mechanisms of erlotinib in combination with berberine in vitro and in vivo using the MTT assay, immunoblotting, flow cytometry, and tumor xenograft models. RESULTS In vitro studies with A431 cells showed that synergistic cell growth inhibition by the combination of BBR and erlotinib was associated with significantly greater inhibition of pEGFR and pAKT, and inhibition of cyclin D and Bcl-2 expression compared to that observed in response to BBR or erlotinib alone. The efficacy of the combination treatment was also investigated in nude mice. Consistent with the in vitro results, BBR plus erlotinib significantly reduced tumor growth. CONCLUSION Our data supported use of BBR in combination with erlotinib as a novel strategy for treatment of patients with EGFR positive tumors.
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Affiliation(s)
- Xiangdan Cuan
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Xingying Yang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Weiwei Zhu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Yue Zhao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Rui Luo
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Yanping Huang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, No. 452, Fengyuan Road, Panlong District, Kunming, 650201, China.
- College of Science, Yunnan Agricultural University, Kunming, 650201, China.
| | - Xuanjun Wang
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, No. 452, Fengyuan Road, Panlong District, Kunming, 650201, China.
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, 650201, China.
- Yunnan Research Institute of Plateau Characteristic Agricultural and Industry, Kunming, 650201, China.
| | - Jun Sheng
- Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, No. 452, Fengyuan Road, Panlong District, Kunming, 650201, China.
- College of Science, Yunnan Agricultural University, Kunming, 650201, China.
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, 650201, China.
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Liu T, Ding S, Yin D, Cuan X, Xie C, Xu H, Wang X, Sheng J. Pu-erh Tea Extract Ameliorates Ovariectomy-Induced Osteoporosis in Rats and Suppresses Osteoclastogenesis In Vitro. Front Pharmacol 2017; 8:324. [PMID: 28620304 PMCID: PMC5450042 DOI: 10.3389/fphar.2017.00324] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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: 03/18/2017] [Accepted: 05/15/2017] [Indexed: 01/19/2023] Open
Abstract
Background and Objective: Tea drinking is associated with positive effects on bone health and may protect against osteoporosis, especially in elderly women. Pu-erh tea has many beneficial effects on human health; however, whether Pu-erh tea has anti-osteoporotic potential remains unclear. Thus, we investigated the effects of Pu-erh tea extract (PTE) on ovariectomy-induced osteoporosis in rats and on osteoclastogenesis in vitro. Methods: Female Wistar rats were divided into six groups: the sham, model, and Xian-Ling-Gu-Bao capsule (XLGB) groups, and the low-, medium-, and high-dose PTE groups. Ovariectomized (OVX) rats were used as an animal model of osteoporosis. The animals were intragastrically administered distilled water, XLGB, or different concentrations of PTE for 13 weeks. Body weight, blood biochemical indicators, relative organ coefficients, femoral bone mineral density (BMD), bone biomechanical properties, and bone microarchitecture were examined and analyzed. Additionally, the in vitro effects of PTE on osteoclastic activities were investigated using the RAW 264.7 cell line as an osteoclast differentiation model. The effects of PTE on osteoclast differentiation and the expression of osteoclast-specific genes and proteins were determined. Results: PTE reduced OVX-induced body weight gain after 6 weeks of treatment, and the high-dose exerted a significant effect. High-dose PTE significantly ameliorated OVX-induced estradiol (E2) deficiency. PTE treatment maintained calcium and phosphorus homeostasis and improved other blood biochemical parameters to various degrees. In addition, PTE treatment improved organ coefficients of the femur, uterus, and vagina and improved femoral BMD and bone biomechanical properties. PTE treatment strikingly ameliorated bone microarchitecture. Moreover, in the in vitro studies, osteoclast differentiation using the differentiation cell model was significantly inhibited by PTE without cytotoxic effects. Additionally, PTE efficaciously suppressed the expression of key osteoclast-specific genes and proteins. Conclusion: PTE can ameliorate ovariectomy-induced osteoporosis in rats and suppress osteoclastogenesis in vitro.
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Affiliation(s)
- Titi Liu
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Shihua Ding
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Dan Yin
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Xiangdan Cuan
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Chuanqi Xie
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Huanhuan Xu
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Xuanjun Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Longrun Pu-erh Tea, Yunnan Agricultural UniversityKunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanKunming, China
| | - Jun Sheng
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanKunming, China
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