Effects of various glutamine concentrations on gene expression and steviol glycosides accumulation in Stevia rebaudiana Bertoni

Esmaeili, Fatemeh; Ghaheri, Matin; Kahrizi, Danial; Mansouri, Majdi; Safavi, Seyed Mehdi; Ghorbani, Tayebeh; Muhammadi, Sarre; Rahmanian, Elham; Vaziri, Siavash

doi:10.14715/cmb/2018.64.2.1

Cited by 40 publications

(26 citation statements)

References 16 publications

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“…In relation to non-genetic factors, the most optimal condition should be determined. (26)(27)(28)(29)(30). MicroRNAs play an important role in this regard (31).…”

Section: Discussionmentioning

confidence: 99%

Effects of ethyl acetate extract of peony (Paeonia suffruticosa) seed coat on the proliferation and apoptosis of oral squamous carcinoma cells through miR-424-3p/STAT3/Survivin pathway

Ren

2020

Cell Mol Biol (Noisy-le-grand)

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Oral squamous cell carcinoma is one of the most common high malignant tumors. This experiment aimed to investigate whether ethyl acetate extract of peony (Paeonia suffruticosa) seed coat could affect the proliferation and apoptosis of oral squamous carcinoma cells by regulating the miR-424-3p/STAT3/ Survivin pathway. For this purpose, oral squamous cell carcinoma cell CAL27 was cultured in vitro, and cells were treated with ethyl acetate extract of peony seed coat at different concentrations. MTT was used to detect cell proliferation. Flow cytometry was used to detect apoptosis. qRT-PCR was used to detect the expression level of miR-424-3p. The miR-424-3p mimics and anti-miR-424-3p were transfected into CAL27 cells respectively, and the cell proliferation and apoptosis were detected by the above method. Western blot method was used to detect the expression of PCNA, Bcl-2, Bax, p-STAT3 and Survivin protein. Results showed that ethyl acetate extract of peony seed coat could reduce cell proliferation rate and the protein levels of PCNA, Bcl-2, p-STAT3, Survivin and the expression level of miR-424-3p (P<0.05), increase apoptosis rate and the protein level of Bax (P<0.05). After transfection with anti-miR-424-3p, the cell proliferation rate, the protein levels of PCNA and Bcl-2 were significantly reduced (P<0.05), the apoptosis rate and the protein level of Bax were significantly increased (P<0.05), while the effect of miR-424-3p mimics was the opposite. Transfection of miR-424-3p mimics could significantly reduce the regulatory effect of ethyl acetate extract of peony seed coat on CAL27 cell proliferation, apoptosis and STAT3/Survivin pathway. It concluded that ethyl acetate extract of peony seed coat could inhibit the activation of the STAT3/Survivin signaling pathway by down-regulating the expression of miR-424-3p, thereby inhibiting the proliferation of oral squamous carcinoma cells and inducing apoptosis.

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“…In relation to non-genetic factors, the most optimal condition should be determined. (26)(27)(28)(29)(30). MicroRNAs play an important role in this regard (31).…”

Section: Discussionmentioning

confidence: 99%

Effects of ethyl acetate extract of peony (Paeonia suffruticosa) seed coat on the proliferation and apoptosis of oral squamous carcinoma cells through miR-424-3p/STAT3/Survivin pathway

Ren

2020

Cell Mol Biol (Noisy-le-grand)

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“…Stevia rebaudiana, an important perennial herb, accumulates high concentrations of steviol glycosides [35, 36]. Stevioside and rebaudioside-A, the two most abundant compounds found in leaf extract of this plant, have been used for many years in traditional treatment of diabetes by stimulating insulin secretion.…”

Section: Introductionmentioning

confidence: 99%

Co-expression of anti-miR319g and miRStv_11 lead to enhanced steviol glycosides content in Stevia rebaudiana

et al. 2019

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Background miRNAs are major regulators of gene expression and have proven their role in understanding the genetic regulation of biosynthetic pathways. Stevioside and rebaudioside-A, the two most abundant and sweetest compounds found in leaf extract of Stevia rebaudiana , have been used for many years in treatment of diabetes. It has been found that the crude extract is more potent than the purified extract. Stevioside, being accumulated in higher concentration, imparts licorice like aftertaste. Thus, in order to make the sweetener more potent and palatable, there is a need to increase the intrinsic concentration of steviol glycosides and to alter the ratio of rebaudioside-A to stevioside. Doing so would significantly increase the quality of the sweeteners, and the potential to be used on a wider scale. To do so, in previous report, miRNAs associated with genes of steviol glycosides biosynthetic pathway were identified in S. rebaudiana. In continuation to that in this study, the two miRNAs (miR319g and miRStv_11) targeting key genes of steviol glycosides biosynthetic pathway were modulated and their impact was evaluated on steviol glycosides contents. Results The over-expression results showed that miRStv_11 induced, while miR319g had repressive action on its target genes. The knock-down constructs for miR319g and miRStv_11 were then prepared and it was demonstrated that the expression of anti-miR319g produced inhibitory effect on its target miRNA, resulting in enhanced expression of its target genes. On the other hand, anti-miRStv_11 resulted in down-regulation of miRStv_11 and its target gene. Further miRStv_11 and anti-miR319gwere co-expressed which resulted in significant increase in stevioside (24.5%) and rebaudioside-A (51%) contents. Conclusion In conclusion, the role of miR319g and miRStv_11 was successfully validated in steviol gycosides biosynthetic pathway gene regulation and their effect on steviol gycosides contents. In this study, we found the positively correlated miRNA-mRNA interaction network in plants, where miRStv_11 enhanced the expression of KAH gene. miRNAs knock-down was also successfully achieved using antisense precursors. Overall, this study thus reveals more complex nature and fundamental importance of miRNAs in biosynthetic pathway related gene networks and hence, these miRNAs can be successfully employed to enhance the ratio of rebaudioside-A to stevioside, thus enhancing the sweetening indices of this plant and making it more palatable. Electronic supplementary material The online version of this article (10.1186/s12870-019-1871-2) contains supplementary material, which is available to authorized users.

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“…In genetics, gene expression is one of the most important and essential issues that assistance a genotype to appear as a phenotype. The genetic code stored in the DNA strands is interpreted by gene expression, and the characteristics and expression of the gene will cause a phenotype in the organism (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33). In this research, we investigated on the MiR-381-3p/RAB2A axis activates cell proliferation and inhibits cell apoptosis in bladder cancer.…”

Section: Discussionmentioning

confidence: 99%

MiR-381-3p/RAB2A axis activates cell proliferation and inhibits cell apoptosis in bladder cancer

Sun

Hu²,

Wang

et al. 2020

Cell Mol Biol (Noisy-le-grand)

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Acting as a really common cancer in the world, bladder cancer has taken many people's life away. MiRNAs and mRNA have been reported can regulate the expression of cancers. In this study, the role of RAB2A and miR-381-3p was fully studied in bladder cancer. qRT-PCR assay probe the expression of RAB2A and miR-381-3p in bladder cancer cells. Meanwhile, colony formation assay, EdU assay, flow cytometry analysis, JC-1 assay and western blot assay were implemented to detect the progression of bladder cancer cells. Silenced RAB2A could reduce the cell proliferation of bladder cancer, and activate the apoptosis.Meanwhile, miR-381-3p could bind to RAB2A in bladder cancer cells and overexpressed miR-381-3p could inhibit the progression of bladder cancer cells. MiR-381-3p/RAB2A axis activates cell proliferation and inhibits cell apoptosis in bladder cancer.

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Effects of various glutamine concentrations on gene expression and steviol glycosides accumulation in Stevia rebaudiana Bertoni

Cited by 40 publications

References 16 publications

Effects of ethyl acetate extract of peony (Paeonia suffruticosa) seed coat on the proliferation and apoptosis of oral squamous carcinoma cells through miR-424-3p/STAT3/Survivin pathway

Effects of ethyl acetate extract of peony (Paeonia suffruticosa) seed coat on the proliferation and apoptosis of oral squamous carcinoma cells through miR-424-3p/STAT3/Survivin pathway

Co-expression of anti-miR319g and miRStv_11 lead to enhanced steviol glycosides content in Stevia rebaudiana

MiR-381-3p/RAB2A axis activates cell proliferation and inhibits cell apoptosis in bladder cancer

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