The gene expression of porcine adiponectin and stearoyl coenzyme A desaturase (SCD) was investigated in this study. The partial gene sequences for adiponectin and SCD were amplified by RT-PCR from subcutaneous adipose tissue and cloned by TA cloning techniques. Sequences of these genes were determined and found to be highly homologous to that of other species, suggesting similar function of these genes as in other species. The transcripts of these adipocyte-related genes in pig tissues were measured by Northern analysis. The transcripts for adiponectin and SCD were highly expressed in porcine subcutaneous adipose tissue; the transcripts for SCD were also barely detected in the liver, but the greatest concentrations were in the adipose tissue. In porcine stromalvascular cells (S/V cells) cultured in vitro, transcripts for adiponectin and SCD increased gradually during adipocyte differentiation. The level of adipocyte adiponectin mRNA was associated with late adipocyte differentiation, indicating the gene may not be involved in adipocyte differentiation but has great importance in porcine adipocyte functions. The SCD transcripts were not detectable until 2 d after induction of adipocyte differentiation. It was highly expressed in differentiating porcine adipocytes (2 to 10 d after the induction of adipocyte differentiation), indicating a significant role of SCD in adipocytes.
Objectives : The purpose of this study is to investigate the effects of Chowiseungcheng-tang extracts on the preadipocytes proliferation in 3T3-L1 cell line, lipolysis of adipocytes in rat's epididymal adipocytes and localized fat accumulation of porcine by extraction methods(alcohol and water). Methods : Diminish preadipocytes proliferation and promote lipolysis of adipocytes do primary role to reduce obesity. So, we used 3T3-L1 mouse embryo fibroblasts(preadipocytes) and rat epididymal adipocytes from Sprague-Dawley rats to investigate the effects of Chowiseungcheng-tang extracts on the preadipocytes proliferation, lipolysis of adipocytes. They were treated with 0.01, 0.1, $1.0mg/m{\ell}$ Chowiseungcheng-tang alcohol and water extracts. And for the purpose of investigating the effects of Chowiseungcheng-tang alcohol and water extracts on the localized fat accumulation, we injected 0.1, 1.0, $10.0mg/m{\ell}$ Chowiseungcheng-tang extracts to porcine fat tissues and observed histological changes of them. Results : Following results were obtained from the preadipocytes proliferation and lipolysis of adipocytes and histological investigation of fat tissues. 1. Chowiseungcheng-tang extracts suppressed preadipocytes proliferation on the high dosage(especially $1.0mg/m{\ell}$), and especially alcohol extracts had better effects. 2. The alcohol extracts of Chowiseungcheng-tang decreased the activity of glycerol-3-phosphate dehydrogenase (GPDH) on the concentrations of 0.1, $1.0mg/m{\ell}$. Alcohol extracts had better effects than water extracts. 3. Chowiseungcheng-tang extracts increased lipolysis of adipocytes on the concentrations of 0.1, $1.0mg/m{\ell}$, and especially on the concentration of $1.0mg/m{\ell}$ alcohol extract of Chowiseungcheng-tang had better effect. 4. The water extract of Chowiseungcheng-tang had significant activity to the destruction of porcine fat cell membranes only on the concentration of $10.0mg/m{\ell}$, but alcohol extracts of Chowiseungcheng-tang had it on all concentrations. Conclusions : The alcohol extracts of Chowiseungcheng-tang had much better effects on the preadipoeytes proliferaton, lipolysis of adipocytes and localized fat accumulation than water extracts.
Zhang, Guo Hua;Lu, Jian Xiong;Chen, Yan;Dai, Hong Wei;ZhaXi, YingPai;Zhao, Yong Qing;Qiao, Zi Lin;Feng, Ruo Fei;Wang, Ya Ling;Ma, Zhong Ren
Molecules and Cells
/
v.39
no.11
/
pp.797-806
/
2016
Lipogenesis is under the concerted action of ChREBP, SREBP-1c and other transcription factors in response to glucose and insulin. The isolated porcine preadipocytes were differentiated into mature adipocytes to investigate the roles and interrelation of these transcription factors in the context of glucose- and insulin-induced lipogenesis in pigs. In ChREBP-silenced adipocytes, glucose-induced lipogenesis decreased by ~70%, however insulin-induced lipogenesis was unaffected. Moreover, insulin had no effect on ChREBP expression of unperturbed adipocytes irrespective of glucose concentration, suggesting ChREBP mediate glucose-induced lipogenesis. Insulin stimulated SREBP-1c expression and when SREBP-1c activation was blocked, and the insulin-induced lipogenesis decreased by ~55%, suggesting SREBP-1c is a key transcription factor mediating insulin-induced lipogenesis. $LXR{\alpha}$ activation promoted lipogenesis and lipogenic genes expression. In ChREBP-silenced or SREBP-1c activation blocked adipocytes, $LXR{\alpha}$ activation facilitated lipogenesis and SREBP-1c expression, but had no effect on ChREBP expression. Therefore, $LXR{\alpha}$ might mediate lipogenesis via SREBP-1c rather than ChREBP. When ChREBP expression was silenced and SREBP-1c activation blocked simultaneously, glucose and insulin were still able to stimulated lipogenesis and lipogenic genes expression, and $LXR{\alpha}$ activation enhanced these effects, suggesting $LXR{\alpha}$ mediated directly glucose- and insulin-induced lipogenesis. In summary, glucose and insulin stimulated lipogenesis through both dissimilar and identical regulation pathway in porcine adipocytes.
Objectives : This study was carried out to investigate the effects of Ephedrae Herba pharmacopuncture (EHP) on the adipogenesis in 3T3-L1 cells, lipolysis in rat epididymal adipocytes and histological changes in porcine adipose tissue. Methods : Inhibition of preadipocyte differentiation and/or stimulation of lipolysis play important roles in reducing obesity. 3T3-L1 preadipocytes were differentiated with adipogenic reagents by incubating for 3 days in the absence or presence of EHP ranging from 0.01 to 1.0 $mg/m{\ell}$. The effect of EHP on adipogenesis was examined by measuring glycerol-3-phosphate dehydrogenase (GPDH) activity and by oil red O staining. Mature adipocytes from rat epididymal fat pad were incubated with EHP ranging from 0.01 to 1.0 $mg/m{\ell}$ for 3 days. The effect of EHP on lipolysis was examined by measuring free glycerol released. Fat tissue from porcine skin was injected with EHP ranging from 0.1 to 10.0 $mg/m{\ell}$ to examine the effect of EHP on histological changes under light microscopy. Results : The following results were obtained from present study on adipogenesis of preadipocytes, lipolysis of adipocytes and histological changes in fat tissue. Proliferation of preadipocytes was significantly inhibited by EHP at the concentration of 1.0 $mg/m{\ell}$. Lipolysis of adipocytes was increased by EHP at the concentration of 0.1, 1.0 $mg/m{\ell}$. Porcine fat tissues were widely injured by EHP at the concentration of 10.0 $mg/m{\ell}$. Conclusions : From the above results, EHP efficiently induces inhibition of preadipocytes proliferation, lipolysis of adipocytes and histologic injury in fat tissues. Therefore, EHP may be useful to treat localized obesity.
Objectives The purpose of this study is to investigate the effects of Crataegi Fructus Pharmacopuncture(CFP) on the adipogenesis in 3T3-L1 cells, lipolysis in rat epididymal adipocytes and histological changes in porcine adipose tissue. Methods Inhibiton of preadipocyte differentiation and/or stimulation of lipolysis play important roles in reducing obesity. 3T3-L1 preadipocytes were differentiated with adipogenic reagents by incubating for 3days in the absence or presence of CFP ranging from 0.01 to 1mg/mL. The effect of CFP on adipogenesis was examined by measuring GPDH activity and by Oil Red O staining. Mature adipocytes from rat epididymal fat pad was incubated with CFP ranging from 0.01 to 1mg/mL for 3 hrs. The effect of CFP on lipolysis was examined by measuring free glycerol released. Fat tissue from pig skin was injected with CFP ranging from 0.1 to 10mg/mL to examine the effect of CFP on histological changes under light microscopy. Results The following results were obtained from present study on adipogenesis of preadipocytes, lipolysis of adipocytes and histological changes in fat tissue. 1. Crataegi Fructus Pharmacopuncture inhibited adipogenic differentiation at the concentration of 1.0mg/mL. 2. Crataegi Fructus Pharmacopuncture decreased the activity of glycerol-3-phosphate dehydrogenase(GPDH) at the concentration of 0.1mg/mL. 3. Crataegi Fructus Pharmacopuncture ok. lipolysis at the concentration of 0.1mg/ml. 4. Crataegi Fructus Pharmacopuncture ranging 0.1 to 10mg/mL failed to exert lysis of cell membrane in porcine fat tissue. Conclusions These results suggest that Crataegi Fructus Pharmacopuncture at relatively high concentration inhibited adipogenesis and increased lipolysis of adipocytes. However, Crataegi Fructus Pharmacopuncture didn't exert any effect on lysis of cell membrane in fat tissue.
Mesenchymal stem/progenitor cells (MPCs) were isolated from porcine umbilical cord blood (UCB) and their morphology, proliferation, cell cycle status, cell-surface antigen profile and expression of hematopoietic cytokines were characterized. Their capacity to differentiate in vitro into osteocytes, adipocytes and chondrocytes was also evaluated. Primary cultures of adherent porcine MPCs (pMPCs) exhibited a typical fibroblast-like morphology with significant renewal capacity and proliferative ability. Subsequent robust cell growth was indicated by the high percentage of quiescent (G0/G1) cells. The cells expressed the mesenchymal surface markers, CD29, CD49b and CD105, but not the hematopoietic markers, CD45 and CD133 and synthesized hematopoietic cytokines. Over 21 days of induction, the cells differentiated into osteocytes adipocytes and chondrocytes. The expression of lineage specific genes was gradually upregulated during osteogenesis, adipogenesis and chondrogenesis. We conclude that porcine umbilical cord blood contains a population of MPCs capable of self-renewal and of differentiating in vitro into three classical mesenchymal lineages.
Kim, Min-Ki;Lee, Si-Hyeong;Shin, Jo-Young;Kim, Kang-San;Cho, Nam-Guen;Rhim, Tae-Jin;Kwon, Ki-Rok
Journal of Pharmacopuncture
/
v.10
no.3
/
pp.5-19
/
2007
Objectives The purpose of this study was to investigate the effects of Bee Venom and Sweet Bee Venom to the primary cultured preadipocyte, adipocytes, and localized fat tissue. Methods Decreased preadipocyte proliferation and decreased lipogenesis are mechanisms to reduce obesity. So, preadipocytes and adipocytes were performed on cell cultures using Sprague-Dawley Rats and treated with 0.01-1mg/ml Bee Venom and Sweet Bee Venom. And porcine skin including fat tissue after treated Bee Venom and Sweet Bee Venom according to the dosage dependent variation are investigated the histologic changes after injection of these Pharmacopuncture. Result Following results were obtained from the preadipocyte proliferation and lipolysis of adipocyte and histologic investigation of fat tissue. 1. Bee Venom and Sweet Bee Venom showed the effect of decreased preadipocyte proliferation depend on concentration. 2. Bee Venom and Sweet Bee Venom showed the effect of decreased the activity of glycerol-3-phosphate dehydrogenase(GPDH) significantly. 3. Bee Venom was not showed the effect of lipolysis, but Sweet Bee Venom was increased in low dosage and decreased in high dosage. 4. Investigated the histologic changes in porcine fat tissue after treated Bee Venom and Sweet Bee Venom, we knew that these Pharmacopuncture was activated nonspecific lysis of cell membranes depend on concentration. Conclusion These results suggest that Bee Venom and Sweet Bee Venom efficiently induces decreased proliferation of preadipocyte and lipolysis in adipose tissue.
Objectives : The purpose of this study is to investigate the effects of Spirodelae Herba pharmacopuncture(SHP) on the adipogenesis in 3T3 cells, lipolysis in rat epididymal adipocytes and histological changes in porcine adipose tissue. Methods : Inhibition of preadipocyte differentiation and/or stimulation of lipolysis play important roles in reducing obesity. 3T3 preadipocytes were differentiated with adipogenic reagents by incubating for 3 days in the absence or presence of SHP ranging from 0.01 to $1.0mg/m{\ell}$. The effect of SHP on adipogenesis was examined by measuring glycerol-3-phosphate dehydrogenase(GPDH) activity and by Oil Red O staining. Mature adipocytes from rat epididymal fat pad was incubated with SHP ranging from 0.01 to $1.0mg/m{\ell}$ for 3 days. The effect of SHP on lipolysis was examined by measuring free glycerol released. Fat tissue from porcine skin was injected with SHP ranging from 0.1 to $10.0mg/m{\ell}$ to examine the effect of SHP onhistological changes under light microscopy. Results : Following results were obtained from the preadipocyte proliferation and lipolysis adipocyte and histologic investigation of fat tissue 1. SHP showed the effect of decreased preadipocyte proliferation on the high dosage($1mg/m{\ell}$). 2. SHP showed the effect of decreased the activity of glycerol-3-phosphate dehydrogenase (GPDH) on the high dosage($1mg/m{\ell}$). 3. Investigated the changes in lipolysis of differentiated adipocyte after treated SHP, we knew that these pharmacopuncture showed increasing the effect of lipolysis in all concentration significantly. 4. Investigated the histological changes in porcine fat tissue after treated SHP, we knew that these pharmacopuncture showed significant activity to the lysis of extensive cell membranes on high dosage($10.0mg/m{\ell}$). Conclusions : These results suggest that SHP efficiently induces diminishing proliferation of preadipocyte and lipolysis in adipose tissue.
Objective : The purpose of this study is to investigate the effects of Bangpungtongsung-san extracts on the preadipocytes proliferation, of 3T3-L1 cell line. lipolysis of adipocytes in rat's epididymis and localized fat accumulation of porcine by extraction methods(alcohol and water). Methods : Diminish 3T3-L1 proliferation and lipogenesis do primary role to reduce obesity. So, 3T3-L1 preadipocyte and adipocytes were performed on cell cultures, and using Sprague-Dawley rats for the lipogenesis, and treated with 0.01-$1mg/m{\ell}$ Bangpungtongsung-san Extracts depend on concentrations. Porcine skin including fat tissue after treated Bangpungtongsung-san Extracts by means of the dosage dependent variation are investigated the histologic changes after injection of these extracts. Results : Following results were obtained from the 3T3-L1 preadipocyte proliferation and lipolysis of adipocyte in rats and histologic investigation of fat tissue. 1. Bangpungtongsung-san extracts were showed the effect of decreased preadipocyte proliferation on the high dosage($1.0mg/m{\ell}$). 2. Bangpungtongsung-san extracts were showed the effect of decreased the activity of glycerol-3-phosphate dehydrogenase(GPDH) on the high dosage($1.0mg/m{\ell}$) and Specially, alcohol extract of Bangpungtongsung-san was clear as time goes by high concentration. 3. Bangpungtongsung-san extracts were showed tries to compare the effect of lipolysis, alcohol extract of Bangpungtongsung-san on the high dosage($1.0mg/m{\ell}$) was observed the effect is higher than water extract. 4. Investigated the histological changes in porcine fat tissue after treated Bangpungtongsung-san extracts, we knew that water extract of Bangpungtongsung-san was showed the effect of lipolysis on the high dosage($10.0mg/m{\ell}$) and alcohol extract of Bangpungtongsung-san was showed significant activity to the lysis of cell membranes in all concentration. Conclusion : These results suggest that Bangpungtongsung-san efficiently induces diminish proliferation of preadipocyte and lipolysis in adipose tissue.
The present was undertaken to establish a model for the control of adipocytes differentiation by using antibody from egg yolk. The emulsion of membrane protein of 3T3L-1 cell membrane protein with the complete Freund's adjuvant was firstly immunized in layer. Second and third boosting were undertaken with two weeks intervals by injection of the emulsion of the same antigen with the incomplete Freund's adjuvant. After 4 week of the first immunization, eggs were collected and antibody (IgY) was purified from egg yolk. The purity of IgY was 60-98% determined by single radial immunodiffusion (SRID) methods. Titer value of the antibody showed high reactiviy for the preadipocytes membrane protein measured by ELISA. When the IgY was added in the test media containing either 2.5% porcine serum or 10% FBS(control), the differentiation of 3T3L-1 cells and Glycerol-3-phosphate dehydrogenase(GPDH) activities was significantly decreased compared to the control cells(p〈0.05). When mice were subcutaneously injected with IgY raised against membrane protein of 3T3L-1 cells for 3 weeks, adipose tissue mass around ovary was tended to be decreased in female mice compared to those of control mice. It is suggested that a potential for manipulating of lipid accumulation through decrease in 3T3L-1 cell differentiation and fat accumulation in female mice by IgY treatment.
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