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. 2021 Sep 6;12:744129. doi: 10.3389/fimmu.2021.744129

Table 2.

Activities of pCRP and mCRP with various Cancer models.

Cancer Type CRP Reagent Used Mechanistic Notes References
Melanoma Isolated CRP
  • 72 hr. growth in tissue culture

  • Added with lymphocytes

  • Stopped growth of tumor cells

Fibrosarcoma CRP encapsulated in liposomes
  • Anti-metastatic, especially when injected early in disease course

  • Non-encapsulated CRP was not similary effective

Melanoma Fibrosarcoma Sarcoma CRP encapsulated in liposomes
  • Showed tumoricidal activity

  • Anti-tumor response found in exudate macrophages and involved enhanced oxidate metabolism

Colon Adenocarcinoma CRP encapsulated in liposomes
  • Treatment resulted in fewer and smaller liver metastases

Fibrosarcoma Colon carcinoma CRP encapsulated in liposomes
  • Stimulated peritoneal, exudate cells

  • Required an intact complement system

Mastocytoma
Fibroblast carcinoma CAK-1 (mesothelial & ovarian) carcinomas
Isolated CRP Heat aggregated CRP lost tumoricidal activity
  • CRP added to tissue cultured cells

  • CRP affect did not involve lymphokines

  • CRP-activated macrophages did not affect normal fibroblast

Astrocytoma Renal carcinoma Melanoma Isolate CRP
  • CRP activated peripheral blood mononuclear cells (PBMs) but required incubation on glass–adherent cells for 20-44 hr.

  • Tumoricidal activity involved superoxide anion generation

  • Normal PBMs were similarly activated by CRP but normal fibroblasts and glial cells were not

Fibrosarcoma Peptides derived from CRP in liposomes
  • Identified a peptide with anti-tumor and anti-lung metastatic activity

  • Peptide 174IYLGGPFSPNVL185

  • Stimulated Peripheral blood MAC 1+ (CR3+) cells

  • Required encapsulated in a liposome

Fibrosarcoma CRP encapsulated in liposome
CRP-peptide encapsulated in liposomes
  • Increased IL-1 and TNF secretion from monocytes and alveolar macrophages

  • When IL-2 was co-administered with CRP regeant, reported enhanced

  • Influenced IL-1-β, IL-6 and TNF-α secretion on cultured monocytes

Breast Adenocarcinoma mCRP in LUVETS
CRP in LUVETs
Isolated pCRP
Isolated mCRP
  • mCRP alone or in LUVETS slowed tumor growth, caused necrosis at site of tumor growth and reduced metastasis

  • pCRP alone or in LUVETS was ineffective in slowing tumor growth or preventing metastasis

Lewis Lung Carcinoma CAPAN-2 Pancreatic mCRP Recombinant nCRP
  • Slower tumor growth

  • Cased necrosis at tumor site

  • Anti-cancer effects observed in nude mice