ABSTRACT
Objective To study the potential therapeutic effect of potassium antimonyl tartrate (PAT) on human colon cancer in transplanted tumor nude mice models. MethodsSixty transplanted animal models were constructed with colon cancer cell line SW480 injected in nude mice. Nude mice were then random divided into 4 groups ( n = 15) :Normal saline group, 5-Fu group and different dose of PAT groups [ (20 mg/( Kg · d) ,40 mg/( Kg · d) ]. The volume of mass was measured every 3 days. After final-administration for 24 hours, immunohistochemical staining was used to detect the expression of PCNA in colon cancer cells. ResultsAfter the use of PAT, the growth of mass slowed down. PCNA levels [ (63. 63 ±8. 88)％ ,(59. 13 ±6. 15)％ ,(33. 38 ± 12. 76)％ ] in SW480 cells was reduced by PAT( P <0. 05, P <0. 01 ). ConclusionPAT potentially inhibited the growth of colon cell lines and induced apoptosis of SW480 colon cancer cells.
ABSTRACT
Objective To investigate the mechanism of Thapsigargin in the proliferation of SW480 and provide experimental basis for development of anti-signaling therapy for patients with colon cancer by detection of intracellular calcium concentration in Thapsigargininduced human colon cell line SW480,.Methods Level of[Ca2+]was measured by fluorescence measurement with fura-2/AM,a fluorescent index of calcium.The suppression rate of SW480 cells was calculated by MTY assay.Results Thapsigargin promoted the levels of [Ca2+]from(133.26±5.17,197.46±4.62)to(436.63±5.21,766.41±3.12),and increased the suppression rate from(10.67±5.28)to(31.46±7.21).When W7 Was combined used with Thapsigargin,no significant changes were found in the levels of[Ca2+]and increment of the suppression rate.Condusion Thapsigargin might promote the proliferation of SW480 cells and lead to apoptosis.but the signaling pathway still remain to he studied.