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Sugar-free approach to treating Kaposi sarcoma

Date:
October 1, 2012
Source:
Rockefeller University Press
Summary:
A sugar-loving protein drives the growth of Kaposi sarcoma tumors, according to a new study. Interfering with these sugary interactions inhibited growth of Kaposi sarcomas in mice, hinting at the potential for new treatment strategies in humans.
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FULL STORY

A sugar-loving protein drives the growth of Kaposi sarcoma (KS) tumors, according to a study published on October 1st in The Journal of Experimental Medicine. Interfering with these sugary interactions inhibited growth of Kaposi sarcomas in mice, hinting at the potential for new treatment strategies in humans.

KS is a cancer that is associated with infection with a herpes virus called HHV-8 and is prevalent in HIV patients. Effective antiretroviral drugs have decreased the incidence of KS, but the cancer eventually progresses in many patients and treatment options are limited.

A carbohydrate-binding protein called galectin-1 is released by a variety of tumors and promotes their growth and metastasis. A group of researchers at the University of Buenos Aires in Argentina now finds that blocking galectin-1 in mice bearing established Kaposi sarcomas slowed tumor growth in part by suppressing the formation of blood vessels that feed the tumor.

If the same holds true in humans, drugs targeting galectin-1 could provide new treatment options for patients with KS. These drugs might also hold promise for other diseases characterized by aberrant blood vessel growth, including macular degeneration and cardiovascular diseases.


Story Source:

The above post is reprinted from materials provided by Rockefeller University Press. Note: Materials may be edited for content and length.


Journal Reference:

  1. Diego O. Croci, Mariana Salatino, Natalia Rubinstein, Juan P. Cerliani, Lucas E. Cavallin, Howard J. Leung, Jing Ouyang, Juan M. Ilarregui, Marta A. Toscano, Carolina I. Domaica, María C. Croci, Margaret A. Shipp, Enrique A. Mesri, Adriana Albini, and Gabriel A. Rabinovich. Disrupting galectin-1 interactions with N-glycans suppresses hypoxia-driven angiogenesis and tumorigenesis in Kaposi’s sarcoma. J. Exp. Med., 2012 DOI: 10.1084/jem.20111665

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Rockefeller University Press. "Sugar-free approach to treating Kaposi sarcoma." ScienceDaily. ScienceDaily, 1 October 2012. <www.sciencedaily.com/releases/2012/10/121001124750.htm>.
Rockefeller University Press. (2012, October 1). Sugar-free approach to treating Kaposi sarcoma. ScienceDaily. Retrieved August 31, 2015 from www.sciencedaily.com/releases/2012/10/121001124750.htm
Rockefeller University Press. "Sugar-free approach to treating Kaposi sarcoma." ScienceDaily. www.sciencedaily.com/releases/2012/10/121001124750.htm (accessed August 31, 2015).

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