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Multimeric Forms of Tyr-Ile-Gly-Ser-Arg (YIGSR) Peptide Enhance the Inhibition of Tumor Growth and Metastasis

Multimeric Forms of Tyr-Ile-Gly-Ser-Arg (YIGSR) Peptide Enhance the Inhibition of Tumor Growth and Metastasis

M Nomizu, K Yamamura, H K Kleinman, Y Yamada

Cancer Res. 1993 Aug 1;53(15):3459-61.

PMID: 8339246

Abstract:

The Tyr-Ile-Gly-Ser-Arg (YIGSR) peptide derived from the laminin B1 chain has been shown to decrease tumor growth and metastasis. Utilizing the multimeric antigen peptide system assembled on a branched lysine core, we synthesized several sizes of multimeric YIGSR, (CH3CO-Tyr-Ile-Gly-Ser-Arg-Gly)16-Lys8-Lys4-Lys2 -Lys-Gly [(Ac-YIGSRG)16 K8K4K2KG] (designated Ac-Y16), (Ac-YIGSRG)8K4K2KG (Ac-Y8), and (Ac-YIGSRG)4K2KG (Ac-Y4), and related peptides, Ac-(YIGSRG)4-NH2 (Ac-Y4L) and Ac-YIGSR-NH2 (Ac-Y1) and evaluated their biological activities in inhibiting tumor growth and metastasis. Coinjection of 0.2 mg/mouse of Ac-Y16 i.v. with B16-F10 mouse melanoma cells inhibited lung colony formation by 97%, whereas 0.2 mg/mouse of Ac-Y1 inhibited by 50%. The larger the peptide (Ac-Y16 > Ac-Y8 > Ac-Y4 > Ac-Y1), the more inhibitory effect there was on lung metastasis. Ac-Y16 also inhibited the growth of s.c.-injected B16-F10 tumors. These data demonstrate that the multimeric YIGSR peptides strongly enhanced the activity of YIGSR in inhibiting tumor growth and metastasis and suggest that these compounds are potentially useful for clinical applications.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP110590642	Tyr-Ile-Gly-Ser-Arg		110590-64-2	Price

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