cyclo(tyr-phe)

Cyclo(Tyr-Phe) is a naturally occurring cyclic dipeptide (or diketopiperazine) formed from the amino acids Tyrosine (Tyr) and Phenylalanine. Cyclo(Tyr-Phe) is additionally applicable in biochemical and molecular research for studying cyclic dipeptide formation mechanisms and for investigating peptide-derived small molecule interactions in cellular signaling systems.

Bisnafide is a Naphthalimide Analogue that acts as DNA intercalator and topo II inhibitor. It is also an antiangiogenic agent. Antiangiogenic agents can normalize tumor vessels and promote the delivery of cytotoxic agents to tumor sites.

DOTA-LM3 TFA is a somatostatin receptor (SSTR) antagonist with the molecular structure p-Cl-Phe-cyclo(D-Cys-Tyr-D-4-amino-Phe(carbamoyl)-Lys-Thr-Cys)D-Tyr-NH2, used for in vivo tumor tracing via isotopic labeling, such as 177Lu-DOTA-LM3 TFA and 68Ga-DOTA-LM3 TFA. The 68Ga-labeled compound shows favorable biodistribution, high tumor uptake, good tumor retention, and minimal safety concerns, while the 177Lu-labeled variant targets DOTATOC-negative liver metastases, including pancreatic NET and extensive tumor thrombosis [1] [2].

DOTA-LM3 is a somatostatin receptor (SSTR) antagonist, with LM3 denoting the peptide sequence p-Cl-Phe-cyclo(D-Cys-Tyr-D-4-amino-Phe(carbamoyl)-Lys-Thr-Cys)D-Tyr-NH2. It is utilized in the isotopic labeling of tumors for in vivo tracing, notably with 177Lu-DOTA-LM3 and 68Ga-DOTA-LM3. The derivative 68Ga-DOTA-LM3 exhibits promising biodistribution, high tumor uptake, efficient tumor retention, and minimal safety concerns, while 177Lu-DOTA-LM3 is applied in research on DOTATOC-negative liver metastases including pancreatic NET and extensive tumor thrombosis [1] [2].