Vol 6-3 Original Research Article

An Acute Inflammation with Special Expression of CD11 & CD4 Produces Abscopal Effect by Intratumoral Injection Chemotherapy Drug with Hapten in Animal Model

Baofa Yu, MD1,2,3,4*, Qiang Fu, MS3, Yan Han, MS3, Jian Zhang3, Dong Chen,MD3

1Immuno Oncology Systems, Inc., San Diego, CA 92122, USA

2TaiMei Baofa Cancer hospital, Dongping, Shandong Province, China, 271500

3Jinan Baofa Cancer hospital, Jinan, Shandong Province, China,250000

4Beijing Baofa Cancer Hospital, Beijing, China

Aim: To study the immunity reaction in tumor by intratumoral injection with a drug PYM and DNP, where it produces abscopal effect by the expression of immunological genes of tumor on home side (left side) while it brings a similar expression of same genes in tumor on opposite side (right side) of mice.

Method: Prepare each tumor on left side of 6 mice and injected intratumoral with a PYM+DNP and PYM control on day 1 and 7. Two day later of day 1, one of groups mice were inoculated with 0.2ml of H22 cells (105/ml) again on the right underarms as opposite side for controls. On day15, the tumor on bilateral sides were excised for qPCR measurement.

Result: It showed that inflammation with the expression of the CoL1a1, CD4, IL12aÂ, TGFb1Â, Elastin, Elastin, Cox2, CD11b/c, CD8, TNFa in different groups; The inflammation in both side of tumor but these is not only a increasing expression of Collal, CD4, IL12aÂ, TGFb1Â, Elastin, NFKB, Cox2, CD11c, CD8 and TNFa in tumor on home side of mice treated with PYM+DNP but also a similar an increasing expression of same genes in tumor on opposite side of mice which not treated at all. In the control group, it showed that inflammation without an expression of all factors related above immunity genes in both tumor on home treated with PYM only and opposite side of mice which not treated at all.

Conclusion: It indicated that PYM and hapten of DNP can induce an inflammation with stimulation of immunity reaction with the expression of the CoL1a1, CD4, IL12aÂ, TGFb1Â, Elastin, Elastin, Cox2, CD11b/c, CD8, TNFaÂ, which resulted in an abscopale effect. PYM can induce an inflammation but without expression of immuno genes, therefore, hapten is playing an important role with PYM in the special immunity reaction.

DOI: 10.29245/2578-3009/2022/3.1236 View / Download Pdf